Search Results — 2000 specimen records retrieved (1592 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC117394  Acer circinatum Steve Edwards 1992-5-17 Butte Vilas Road, 0.9 miles from its junction with Cohasset Road. Comment
  CAS-BOT-BC330629  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 s.n. (distributed as UCBerkeley's 423 ) Butte Jonesville, near Butte Creek 2100 Comment
  UC1602363  Acer glabrum var. glabrum R. M. A. May 1896 473 Butte summit Humboldt Road between Chico and Prattville; between Chico and Prattville Comment
  UC426916  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 423 Butte Jonesville Jonesville (on shady side of high ridge) 2100 Comment
  UC109199  Acer negundo var. californicum Mrs. R. M. Austin May 1883 262 Butte w Chico (Sacramento River); , w of Chico Comment
  CHSC3356  Acer truncatum Robert L. Smith 1966-4-6 57 Butte U. S. Plant Introduction Station 5 miles SE of Chico, Calif. Comment
  CHSC250  Achillea millefolium M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC44271  Achillea millefolium Vernon Oswald 1988-6-14 3380 Butte Jordan Hill Rd. 1.5 mi (odometer) n of Griffin Gulch. 755 Comment
  UCD128453  Achillea millefolium J. Travis Rubke 1977-4-25 120 Butte around 13 km east of Chico, north of skyway. 600 Comment
  CHSC49582  Achnatherum lemmonii Vernon Oswald 1985-6-3 1800 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn. Lookout. 1066 Comment
  CHSC57164  Achnatherum lemmonii J. D. Jokerst 1980-4-18 Butte Edge of Nimshew Road, 1.0 mi south of town of Nimshew. Comment
  CAS-BOT-BC216462  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC216463  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  UC600788  Achnatherum occidentale subsp. californicum H. F. Copeland 1932-8-17 Butte at the summit Jonesville 2000 Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  UC1499974  Achnatherum stillmanii Lowell Ahart 1983-8-16 4302 Butte 3 mi s near Bull Hill Road Butte Meadows 1600 Comment
  CHSC111347  Achyrachaena mollis Lowell Ahart 2012-5-2 17951 Butte On damp dark clay soil, 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  UCR187085  Achyrachaena mollis Anna M. Hurlbutt, C. R. Weeks 2007-4-26 007 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
  CHSC113096  Acmispon americanus var. americanus Lowell Ahart 2013-11-18 19282 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
  CHSC30682  Acmispon americanus var. americanus M. S. Taylor 1978-7-18 1689 Butte N side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1325 Comment
  CHSC33636  Acmispon americanus var. americanus M. Merryman 1979-9-2 26 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 951 Comment
  CHSC872  Acmispon americanus var. americanus D. Crummett 1937-5-27 Butte Paradise Road. 396 Comment
  CHSC49839  Acmispon brachycarpus Vernon H. Oswald 1990-4-2 4140 Butte East side of Feather River in Oroville, Montgomery St access. Near the river directly w of Montgomery St. 42 Comment
  CHSC875  Acmispon brachycarpus A. Koopman 1929-3-28 Butte Hill by Country Club. 60 Comment
  CHSC85742  Acmispon nevadensis var. nevadensis G. F. Hrusa; T. D. Wilfred 1996-7-9 13165 Butte Sierra Nevada-Plumas National Forest. On USFS 22N80 overlooking drainages of Marble Creek and Jordan ck to N. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1300 Comment
  CHSC45234  Aconitum columbianum var. columbianum Kirsten Tarp 1981-7-28 52 Butte Coon Hollow, ca. 29 air miles ne of Chico. 1731 Comment
  CHSC45537  Aconitum columbianum var. columbianum Kirsten Tarp 1982-7-12 195 Butte N part of county, e of Butte Creek House. In meadow. 1926 Comment
  CHSC55251  Aconogonon phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte Along the edges of Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  CHSC36077  Actaea rubra R. A. Schlising 1982-6-10 4292 Butte N of Paradise and Magalia at old Powellton site; forest along Kanaka Creek. 1097 Comment
  UC600485  Actaea rubra E. B. Copeland June, 1930 Butte near Butte Creek Jonesville 1550 Comment
  CHSC9263  Adiantum jordanii D. C. Burns 1971-4-9 129 Butte Abundant ca. 1 mi e of the intersection of Manzanita Ave. and Centennial Ave. (lower Big Chico Creek Canyon, called the fern banks). 82 Comment
  POM120405  Adiantum jordanii C. C. Bruce 1897-06 1863 Butte Butte Creek Comment
  SEINET10529854  Adiantum jordanii Mary Susan Taylor 1973-1 Taylor 55 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET11716466  Adiantum jordanii D. E. Nay 1975-1 26 Butte ca 150 m SSW of Covered Bridge, 6.4 mi ESE of 99E/Skyway Jct., Chico 130 Comment
  CHSC114935  Aegilops triuncialis D. B. Joley 1972-5-24 Butte Hwy 32, ca. 2 miles south of Forest Ranch, ca. 12 miles north of Chico. 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
  UCD51548  Aegilops triuncialis M. S. Taylor 1980-5-24 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA0089112  Aegilops triuncialis D. B. Joley 1972-5-24 s.n. Butte Hwy 32, ca. 2 miles south of Forest Ranch, ca. 12 miles north of Chico. Comment
  CHSC52342  Aesculus californica Pauleen Broyles 1987-5-21 1055 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Scattered along banks of Singer and Pine Creeks. Comment
  CHSC81522  Aesculus californica Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. About 200 yards from Chico Creek. 91 Comment
  CAS-BOT-BC29614  Agoseris grandiflora var. grandiflora Helen M. Edwards 1917-6-16 s.n. Butte De Sabla Comment
  CAS-BOT-BC22965  Agoseris heterophylla Lowell Ahart 1980-5-4 2209 Butte Near Hurleton 600 Comment
  RSA699526  Agoseris retrorsa R. D. Fischer 2004-4-13 0132 Butte Chico. Sierra Nevada Foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Located on ridge top, between Hwy 32 and Big Chico Creek canyon, near beginning of Bloody Pin Trail. 427 Comment
  UCD146247  Agoseris retrorsa Daniel S. Park; D. Potter 2010-4-10 16 Butte Table Mt. Downhill trail across from waterfall. Growing on slope. 314 Comment
  JEPS127630  Agrostis capillaris B. Castro with Melinda Carlson 2007-10-25 1681 Butte Confluence of Big Chico Creek and Sacramento River. W of River Road and N of the creek within surrounding disturbed riparian forest. Comment
  CHSC42907  Agrostis exarata Lowell Ahart 1987-7-3 5765 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1594714  Agrostis exarata Lowell Ahart 1992-8-2 6907 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  UCD53000  Agrostis idahoensis August L. Hormay 1929-8-19 s.n. Butte Philbrook, near Graham Mine. Comment
  UC203844  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows 1219 Comment
  UC815077  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows 1280 Comment
  CHSC45103  Agrostis stolonifera Lowell Ahart 1988-9-4 6178 Butte Near Big Kimshew Creek, about 1 air miles north-east of Jones Meadow. 1920 Comment
  CHSC49499  Agrostis viridis Vernon Oswald 1987-5-18 2914 Butte Butte Creek Reserve on the s side of Butte Creed n of the Skyway. 80 Comment
  CHSC38721  Ailanthus altissima Vernon Oswald 1983-5-22 528 Butte Upper Bidwell Park, Chico, along the edge of the parking area at the Horse Arena. 79 Comment
  CHSC28673  Aira caryophyllea M. S. Taylor 1976-3-30 1043 Butte Ca. 1/2 mi w of Cherokee Rd, ca. 2 mi ne of Oroville on Table Mountain. 373 Comment
  UC1130794  Aira caryophyllea J. E. Sowder 1933-6-20 86 Butte 1 1/4 mi n Yankee Hill; Chico Quadrangle 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
  CHSC2047  Alisma triviale D. Bower 1953-7-9 Butte 3B Llano Seco. 30 Comment
  CHSC30978  Allium amplectens B. Hollingsworth 1980-4-25 20 Butte Ca. 11 mi nw of Chico, 3.5 mi w of Hwy 99, 0.25 mi n of Cana Hwy, 0.625 mi e of Pine Creek. 45 Comment
  HSC39466  Allium amplectens J. P. Smith, J. O. Sawyer 1973-4-14 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  UCD138475  Allium amplectens L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UCSC000150  Allium amplectens Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CAS-BOT-BC465437  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CAS-BOT-BC465440  Allium campanulatum E. B. Copeland 1937-5-30 s.n. Butte Jonesville Comment
  JEPS122448  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5' 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
  CHSC28049  Allium jepsonii J. D. Jokerst 1978-6-22 151 Butte T22N, R4E, sect. 17. [no other locality information given] Comment
  CHSC86446  Allium jepsonii Jenny Marr 1993-7-1 99 Butte Northern Sierra Nevada, between Concow and Pulga, on a serpentine rockoutcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CAS-BOT-BC472971  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CHSC102181  Allium peninsulare George W. Hartwell 2009-4-22 Butte Concow Road, approx. 3-4 miles above Concow Reservoir on serpentine ridge burned by wildfire in summer 2008. 860 Comment
  UC600454  Allium platycaule H. F. Copeland 1932-7-16 Butte slightly w summit; Jonesville Comment
  CAS-BOT-BC474067  Allium platycaule Lowell Ahart 1987-5-22 5675 Butte North of Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC84890  Allium sanbornii var. sanbornii R. D. Fischer; Jenny Marr 2003-8-3 1 Butte Sierra Nevada foothills, Big Chico Creek Ecological Reserve. On the east side flood plain of Big Chico Creek at southern end of reserve, approx. 300 ft north of Bidwell Park boundary. 243 Comment
  JEPS117692  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte On the west side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville 741 Comment
  CHSC33657  Allium validum R. Schlising; R. Banchero, J. Fuller, M. Merryman 1981-7-19 4154 Butte E of Stirling City, on S side of Bald Mt. 1691 Comment
  CHSC43700  Allophyllum divaricatum Vernon Oswald 1986-5-6 1995 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. On a slope along the road. 457 Comment
  CHSC98807  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 217 Comment
  JEPS103532  Alopecurus carolinianus Lowell Ahart 2002-4-15 9494 Butte Just above the water on the E side of a canal, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC46605  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  RSA500432  Alopecurus pratensis Vernon H. Oswald 1989-7-18 3867 Butte Meadow at Butte Creek House, ca. 3.3. mi (air) se of Jonesville. 1768 Comment
  CHSC6637  Amaranthus M. MacArthur 1968-6-16 339 Butte NE end of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC66429  Amaranthus blitoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7751 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 E side of Fish Camp, Riparian Sanctuary. 28 Comment
  SEINET10478812  Amaranthus blitoides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5159 Butte T17N R1E s/nw sec 15. Pennington quad. Graylodge Wildlife Refuge, on n side of loop rd w of HQ, ca. 12 mi sw of Gridley. 60 ft. 18 Comment
  JEPS128595  Amaranthus deflexus Lowell Ahart 2017-8-1 21652 Butte Park west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CHSC85744  Amaranthus hybridus T. Gantenbein 1999-8-11 1198787 Butte Along rice field levee, Richvale. Comment
  CHSC85142  Amaranthus rudis John Dittes 2003-10-8 847 Butte Undesignated section of Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CDA3289  Amaranthus rudis L. Ahart 1981-9-26 3205 Butte ca. 6 miles west of Chico. 0 Comment
  SEINET10904067  Amelanchier pallida Mary Susan Taylor 1981-5-13 Taylor 3698 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC48841  Amelanchier utahensis Vernon Oswald; Lowell Ahart 1987-8-5 3193 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug roads. 1813 Comment
  JEPS119625  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  UC763141  Amsinckia eastwoodiae R. F. Hoover 1938-4-24 3247 Butte 3 mi n Chico Comment
  CHSC21278  Amsinckia intermedia M. S. Taylor 1974-2-19 39 Butte In fields above and slightly n of Salmon Hole ca. 300 yds e of Upper Bidwell Park Road and ca. 4 mi n of Chico Municipal Golf Course building. 182 Comment
  JEPS108850  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  SEINET10969123  Amsinckia intermedia Mary Susan Taylor 1981-4-14 Taylor 3527 Butte T21N R3E se/ne sec 36, Cherokee quad. Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 450 ft. 137 Comment
  CHSC37418  Amsinckia menziesii Nancy A. Stevens 1971-4-23 19 Butte Found ca 30 ft. s of Highway 32 and ca 2.5 mi w of Forest Ranch 701 Comment
  CHSC37421  Amsinckia menziesii B. Castro 1982-4-21 18 Butte On banks of Singer Creek, ca.1 mi w of Hwy 99 off Haille Rd, ca. 12 mi n of Chico. 60 Comment
  JEPS95957  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico: T21N R2E SE1/4 NW1/4 Sect. 5, 230 ft, agricultural area. Localized weed growing in the NE corner of the intersection of farm roads directly S of the headquarters building. 70 Comment
  UCD56083  Andropogon virginicus Alva W. Mitchell 1957-9-25 s.n. Butte Butte County. Comment
  CAS-BOT-BC137800  Andropogon virginicus var. virginicus John Thomas Howell 1959-9-20 34669 Butte Sierra Nevada. Eastern outskirst of Oroville. Lower foothills. 60 Comment
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  CHSC97535  Andropogon virginicus var. virginicus L. P. Janeway 2007-8-6 9154 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. 776 Comment
  CHSC36074  Anemone oregana R. A. Schlising; Jokerst, Preston 1982-5-19 4248 Butte E part of county E of Feather Falls. Roadside. 1066 Comment
  CHSC42565  Angelica californica Vernon Oswald 1985-7-15 1902 Butte Ponderosa way (Rim Rd.) 3.1 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  JEPS108991  Anthemis cotula Lowell Ahart 2006-10-8 13427 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC42265  Antirrhinum vexillo-calyculatum subsp. intermedium David M. Thompson 1983-7-5 365 Butte Hwy 70, 0.3 miles NE of NE end of bridge at intersection of Pulga Road and Hwy 70. 487 Comment
  CHSC51921  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1988-6-25 2854 Butte Above Clark Rd (hwy 191) 4.8 mi N of Durham-Pentz Rd. 350 Comment
  HSC92438  Antirrhinum vexillocalyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte 0.5 mi. W of the Forbestown Reservoir, along edge of dirt road, NE of Forbestown 701 Comment
  CHSC26514  Aphanes occidentalis D. B. Dewey 1975-4-7 22 Butte Minute! Along Mud Creek, ca 2 mi downstream from Richardson Springs resort. 106 Comment
  CHSC28753  Aphanes occidentalis J. D. Jokerst 1979-3-18 172 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico, top of ridge. 365 Comment
  JEPS107436  Aphanes occidentalis Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11660 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  CAS-BOT-BC454511  Aphanes occidentalis Lowell Ahart 1983-4-7 3968 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/8 miles east hof Honcut 50 Comment
  CHSC40404  Aphyllon epigalium subsp. epigalium Ahart; Jokerst 1985-5-10 4961 Butte On the high bank on the south side of the dirt road, 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC115363  Aphyllon purpureum Lowell Ahart 2015-3-14 19955 Butte On steep basalt slope, on the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 302 Comment
  CHSC27919  Aquilegia formosa var. truncata M. S. Taylor 1978-7-18 1718 Butte On top of Humboldt Peak at Humboldt Summit, on Butte Co and Tehama Co line. 2158 Comment
  CHSC45021  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 227 Butte Ca. 3.3 air miles NE of Stirling City. 1417 Comment
  POM99580  Aquilegia formosa var. truncata R. M. Austin, J. Bruce 1898-05 2423 Butte [Unspecified] Comment
  CHSC3359  Arbutus unedo Robert L. Smith 1966-3-1 22 Butte 5 miles SE of Chico. Comment
  CHSC44905  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte Along the north side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  UCD101990  Arceuthobium campylopodum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC410081  Arceuthobium occidentale John Thomas Howell 1962-6-15 37436 Butte near Magalia 731 Comment
  RSA632988  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27468 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632998  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27476 Butte Cohasset. 630 Comment
  CAS-BOT-BC38864  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte At the Ten Mile House east of Chico in the digger pine and oak belt. Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  CHSC21280  Arctostaphylos manzanita subsp. manzanita M. S. Taylor 1974-4-22 255 Butte Ca. 50 ft E to Cohasset Hwy, ca. 2 mi N of Cohasset. 762 Comment
  CHSC41220  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1985-7-18 2515 Butte Canyon of Rock Cr. between creek and Cohasset Hwy, NW of Cohasset on lower canyon slope. Comment
  UC1303076  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte e Chico; Ten Mile House Comment
  UC412700  Arctostaphylos manzanita subsp. manzanita W. P. Taylor 1912-5-27 Butte 4 mi N Oroville, Chambers Ravine Comment
  UC726568  Arctostaphylos mewukka A. A. Heller 1940-2-24 15506 Butte a half mi w Ten Mile House (e of Chico) Comment
  CHSC109062  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail, about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 397 Comment
  CAS-BOT-BC38565  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CAS-BOT-BC45570  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte Above Jonesville. 2050 Comment
  CHSC25465  Arctostaphylos nevadensis Hayes; Warner 1977-9-11 89 Butte Near top of Humboldt Peak, on Butte-Tehama County line. 2151 Comment
  UC478485  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte ridge e the Summit; Jonesville 640 Comment
  CAS-BOT-BC46715  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  SEINET10449251  Arctostaphylos patula Mary Susan Taylor 1981-5-13 Taylor 3701 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  RSA584780  Arctostaphylos truei J. T. Howell 1976-7-14 51817 Butte Just northeast of Pulga Bridge. 418 Comment
  UCD51943  Arctostaphylos truei John Thomas Howell 1976-4-2 51569 Butte Transition Life Zone, Paradise, Butte County. 609 Comment
  CHSC52398  Arctostaphylos viscida Neil Metcalf 1981-4-10 15 Butte Chico: E 2nd St and Hobart. 30 Comment
  UCD52620  Arctostaphylos viscida B. F. Smith 1971-7-20 95 Butte 3.2 miles north of Magalia, Butte County, California. 792 Comment
  CAS-BOT-BC47389  Arctostaphylos viscida subsp. viscida Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6302 Butte Paradise at Berkshire Way and Bille Road just off The Skyway. Next to a bike trail. 274 Comment
  CHSC28900  Arctostaphylos viscida subsp. viscida M. S. Taylor; J. Jokerst 1980-2-23 2313 Butte East side of Sawmill Rd, ca. 1/2 mi S of Pearson Rd, Paradise. 609 Comment
  SEINET10537446  Arenaria Mary Susan Taylor 1981-5-21 Taylor 3793 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  JEPS94890  Aristida oligantha Lowell Ahart 1998-9-11 8057 Butte about 7 air mi n Oroville (about 1/4 mi w of the cattle chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain 388 Comment
  UCD56450  Aristida oligantha L. Ahart 1977-7-14 1464 Butte Honcut, Peter Ahart Ranch. 50 Comment
  CHSC78059  Aristolochia californica Caleb E. Casey 1999-2-4 Butte Upper Bidwell Park, bluffs on south side over Bear Hole. 365 Comment
  UCD170558  Aristolochia californica D. O. Burge 2017-8-25 2286 Butte Butte Creek. 220 Comment
  CHSC44894  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte About 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC93962  Arnica discoidea R. D. Fischer 2004-6-20 758 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants scattered in open YPF at the south end of camp and west of pond. 1371 Comment
  CAS-BOT-BC90286  Artemisia douglasiana E. B. Copeland 1930-7-27 484 Butte Jonesville 1550 Comment
  CAS-BOT-BC90281  Artemisia douglasiana Lowell Ahart 1977-9-20 1237 Butte Peter Ahart Ranch, Honcut, on the banks of North Honcut Creek 50 Comment
  CAS-BOT-BC400637  Asarum hartwegii A. A. Heller 1913-6-7 10825 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  JEPS108902  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CAS-BOT-BC400640  Asarum hartwegii Clarence R. Quick 1962-6-16 62 -36 Butte SW of road junction of Big Bend-Red Mountain road Comment
  SEINET10475948  Asarum hartwegii Mary Susan Taylor 1980-9-12 Taylor 3334 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  JEPS102321  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte 7 1/2 mi W of Biggs (S side of Biggs - Princeton road, about 1 mi E of Butte Creek) 21 Comment
  JEPS115193  Asclepias speciosa Lowell Ahart 2009-6-19 15944 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
  CHSC32144  Aspidotis californica L. Ahart 1975-4-1 734 Butte Along Ponderosa Way, near Feather Falls. 365 Comment
  CHSC4050  Aspidotis californica J. W. Cherry 1967-3-23 Butte Along Big Chico Creek, directly south of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  CHSC86073  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. Along the Yahi Trail above Brown's Hole. 213 Comment
  SEINET3166412  Aspidotis californica P. J. Alexander 2009-5-27 1050 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, 0.9 (linear) miles SE of the waterfall, 1.7 miles NW of the top of Swain Hill, 17.9 miles ENE of Oroville, Plumas National Forest. 588 Comment
  HSC66084  Aspidotis carlotta-halliae M. S. Taylor 1979-3-19 1927 Butte In the vicinity of Pulga bridge over Feather River on Hwy. 70, 25 mi. NE of Oroville 488 Comment
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Mar 28 2013
  POM196124  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  RSA189461  Aspidotis densa L. S. Rose 1967-5-8 67076 Butte 1 mile south of Pulga, North Fork, Feather River 427 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
  CHSC90942  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  JEPS115812  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  POM16001  Astragalus gambelianus A. A. Heller 1902-5-8 8055 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC178460  Astragalus gambelianus Lowell Ahart 1981-4-9 2751 Butte Near North Honcut Creek on the Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  SEINET945442  Astragalus pauperculus Frank W. Gould 1938-1 316 Butte 2 miles north of Chico in rocky (volcanic) pastureland. Comment
  CHSC30780  Asyneuma prenanthoides M. S. Taylor 1980-9-12 3336 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the Hwy on a dirt road. 975 Comment
  CHSC42895  Asyneuma prenanthoides L. P. Janeway 1984-7-15 924 Butte Just W of Rogers Cow Camp. 1249 Comment
  POM196122  Athyrium filix-femina subsp. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CAS-BOT-BC68689  Athyrium filix-femina var. californicum Lowell Ahart 1982-9-13 3811 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Vly 1100 Comment
  CHSC39357  Athyrium filix-femina var. cyclosorum L. Ahart; P. Ahart 1983-9-21 4461 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  SEINET10841517  Athysanus pusillus Mary Susan Taylor 1973-1 Taylor 43 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD114230  Athysanus pusillus L. Ahart 1973-3-7 159 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47669  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte On the east side of Highway 70, near Garden Drive off ramp, Thermalito. 73 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  JEPS90629  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CDA23332  Atriplex triangularis L. Ahart 2006-10-8 13431 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. Comment
  RSA768984  Avena barbata L. Ahart 2010-5-23 16727 Butte Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 0.25 air miles west of Highway 32, about 9 air miles northeast of Chico 413 Comment
  SEINET10507661  Avena barbata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4856 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC39420  Avena fatua J. D. Jokerst 1984-4-7 1968 Butte Along the edge of Cherokee Rd. Top of North Table Mountain at the mesa's east edge. Comment
  CAS-BOT-BC98008  Baccharis pilularis Lowell Ahart 1981-11-6 3225 Butte Gray Lodge, south-west of Gridley 35 Comment
  CHSC97721  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  CAS-BOT-BC27831  Balsamorhiza macrolepis H. E. Brown 1897-4-15 208 Butte Near Clear Crerek 53 Comment
  CAS-BOT-BC16576  Barbarea orthoceras H. F. Copeland 1920-7-11 57 Butte Scotch John Meadows. 1828 Comment
  CHSC3610  Bellis perennis R. Jaegel 1966-2-15 9 Butte Collected on the front lawn of Chico State College Library; Chico. Comment
  SEINET10536479  Berberis dictyota Mary Susan Taylor 1979-10-13 Taylor 2247 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CAS-BOT-BC169392  Betula W. R. Dudley 1899-8-1 s.n. Butte Upper Sacramento River Comment
  CDA10506  Bidens frondosa L. Ahart 2006-9-11 13274 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
  HSC103997  Bidens frondosa L. Ahart 2013-11-17 19259 Butte About 5/8 mi. SW of the Enterprise Bridge across Lake Oroville, below the high water line of Lake Oroville, along the sides of McCabe Creek 245 Comment
  RSA724879  Bidens frondosa L. Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  SBBG128778  Bidens frondosa L. Ahart 2013-11-17 19259 Butte sides of McCabe Crk, below the high water line of Lake Oroville, ca. 5/8 mi SW of Enterprise Bridge across Lake Oroville 245 Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC64206  Bistorta bistortoides S. C. Morey 1983-8-1 659 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC93964  Bistorta bistortoides R. D. Fischer 2004-6-20 759 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected from wet portion of Chico Meadows north of pond. 1371 Comment
  CHSC94060  Bistorta bistortoides R. D. Fischer 2004-6-20 783 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants growing on the moist soil of the eastern side of Chico Meadows. 1371 Comment
  UCD146244  Blennosperma nanum Daniel S. Park; D. Potter, S. M. Still, J. J. Petersen 2010-4-10 13 Butte Table Mt. 371 Comment
  RSA0036032  Blennosperma nanum var. nanum Lowell A. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 Comment
  LA204403  Boechera platysperma E. B. Copeland; 1931-6-19 643 Butte Jonesville 1550.0 Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CHSC43059  Boykinia major L. P. Janeway 1987-6-19 2235 Butte Along Sly Creek; 2.1 mi from the Challenge-La Porte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC48890  Boykinia major Vernon Oswald 1985-7-21 1910 Butte Near the bridge over the W. Branch of the Feather R., ca. 1 air mi ne of Inskeep. 1341 Comment
  CHSC43743  Boykinia occidentalis Vernon Oswald 1985-6-17 1839 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CHSC103158  Brachypodium distachyon Lowell Ahart 2009-6-3 15821 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  HSC102687  Brachypodium distachyon J. P. Smith 2013-5-5 13701 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  JEPS98558  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte 5 air miles SW of Oroville (Thermalito Afterbay, N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC88979  Briza maxima Christine Hantelman 2000-4-27 83 Butte Around vernal pools on preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  CHSC90998  Briza minor Lowell Ahart 2005-4-14 11710 A Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  RSA181720  Briza minor H. F. Copeland 1923-4-12 90 Butte near Biggs Comment
  CHSC27330  Brodiaea californica T. B. Devine 1977-5-22 380 Butte Meridian Roadside 2.5 mi n of Hwy 99. 67 Comment
  UCD139106  Brodiaea californica Robert E. Preston 2003-5-11 2132 a Butte ca. 5.25 mile east of Durham, along Pentz Road, 0.65 mile east of Hwy 99. 74 Comment
  SEINET10899500  Brodiaea californica Mrs. R. M. Austin Austin 45 Butte Iron Canyon Comment
  CAS-BOT-BC483078  Brodiaea elegans subsp. elegans Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  UCD147860  Brodiaea minor Robert E. Preston 2005-5-9 2340 b Butte Chico, SW of jct Humboldt Rd and Bruce Rd. 81 Comment
  CAS-BOT-BC484555  Brodiaea minor Lowell Ahart 1984-6-10 4686 Butte Along the edge of Hurletojn Swedes Flat Road, about 2 miles south of Forbestown Road, about 12 miles south-east of Oroville, California 450 Comment
  CAS-BOT-BC484559  Brodiaea minor John Thomas Howell 1962-6-15 37456 Butte Magalia 731 Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  CHSC37710  Brodiaea sierrae M. S. Taylor 1982-6-24 4749 Butte W side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70. 670 Comment
  CHSC90988  Brodiaea sierrae Lowell Ahart 2005-5-11 11805 Butte Pasture field, south of Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  JEPS120851  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown Comment
  JEPS26741  Brodiaea sierrae P. C. Hutchison 1961-6-9 2091 Butte on Hwy US Alt. 40 7 mi s Jarbos Gap; canyon of the north fork of the Feather River canyon Comment
  RSA712796  Brodiaea sierrae L. P. Janeway 2005-6-26 8428 Butte South-facing slope 0.4 km. south of top of Batchelor Point, 0.6 km. east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  SEINET10830989  Bromus Mary Susan Taylor 1978-7-21 Taylor 1807 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 miles N of Lake Madrone, ca. 19 miles NE of Oroville; Yellow Pine Forest. Comment
  CHSC35753  Bromus carinatus R. E. Preston 1982-6-2 294 Butte On the bank of Miocene Canal, ca. 1/4 mi s of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 292 Comment
  CHSC3921  Bromus diandrus H. E. Lindahl 1967-3-20 19 Butte 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. 60 Comment
  CHSC104810  Bromus hordeaceus Lowell Ahart 2010-6-12 16797 Butte Along the south side of a small stream, 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
  CHSC109606  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC75424  Bromus hordeaceus Jennifer Slater 1997-4-6 11 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC93794  Bromus laevipes Lowell Ahart 2006-5-19 12631 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CHSC95228  Bromus laevipes L. P. Janeway 2006-8-6 8829 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  UC1609056  Bromus laevipes Lowell Ahart 1993-4-16 6967 Butte about 3 1/2 air mi sw of Forbestown (sw of intersection of Black Bart Road and Forbestown Road) 609 Comment
  UCD58918  Bromus laevipes P. B. Kennedy 1914-5-1 4753 Butte Grade to Paradise. Comment
  SEINET11688365  Bromus laevipes Unknown 1985-1 4987 Butte E of dirt road, ca 1.5 mi NE of Concow Reservoir, NE of Oroville 732 Comment
  SEINET10520326  Bromus macrostachys Lowell Ahart 1987-5-6 Ahart 5550 Butte On dry disturbed soil along the road at the Poe Power House along the North Fork of the Feather River about 2 miles southeast of Jarbo Gap. 283 Comment
  UC203669  Bromus madritensis subsp. rubens A. A. Heller 1914-4-11 11279 Butte 8 mi n of Oroville Comment
  CDA35634  Bromus madritensis subsp. rubens J. R. Keck Jr. 1981-5-13 PDR# 237679 Butte Oroville. 0 Comment
  SEINET10507668  Bromus mollis Mary Susan Taylor 1980-5-27 Taylor 2643 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
  CHSC42904  Bromus orcuttianus Lowell Ahart 1987-7-8 5796 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CAS-BOT-BC161615  Bromus sterilis Lowell Ahart 1979-5-29 s.n. Butte 2.5 miles southeast of Paradise. About 0.25 mile north of Kunkle Pass. 500 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
  CHSC44437  Bulbostylis capillaris Lowell Ahart 1988-6-29 6093 Butte Near Bean Creek Road, about 1/2 mi SE of Little Bald Rock. 975 Comment
  JEPS98571  Bulbostylis capillaris Lowell Ahart 2000-6-6 8455 Butte 5 mi(air)E of Oroville Dam (in tire ruts, bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC49525  Calamagrostis canadensis Vernon Oswald; Lowell Ahart 1987-7-1 3059 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the edge of the creek. 1813 Comment
  RSA325177  Callitriche heterophylla M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-6 5403 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC51361  Callitriche heterophylla var. bolanderi V. Oswald; L. Ahart, L. Hanson 1990-8-14 4439 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.75 mile west of the north end of Sly Creek Reservoir. In a pool. 1219 Comment
  RSA726778  Callitriche heterophylla var. bolanderi L. Ahart 2007-4-16 13672 Butte About 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 63 Comment
  CHSC31832  Callitriche marginata L. Ahart 1974-4-29 447 Butte In rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38283  Callitriche marginata Vernon Oswald 1983-4-6 285 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure located ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. In vernal pond. 85 Comment
  CHSC113110  Callitriche palustris Lowell Ahart 2013-10-26 19215 Butte In shallow water of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC50826  Callitriche verna Vernon Oswald 1990-7-23 4380 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. In a pool in the main meadow along the north branch of Butte Creek. 1780 Comment
  CHSC111406  Calocedrus decurrens Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18267 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
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Aug 28 2018
  CHSC2223  Calochortus albus N. Maxwell 1929-4-24 Butte Centerville Road. 152 Comment
  CHSC44979  Calochortus albus Elizabeth L. Knight 1988-4-16 9 Butte Ca. 3.5 m n of Oroville on Table Mountain and 0.5 m s of Shirmer Ravine, 15 ft w of Cherokee Road. 152 Comment
  CHSC4675  Calochortus albus R. Carter 1966-4-30 385 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CAS-BOT-BC487517  Calochortus albus C. C., Mrs. Bruce 1897-5-1 s.n. Butte Foothills Comment
  SEINET10469592  Calochortus leichtlinii Mary Susan Taylor 1980-8-2 Taylor 3208 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET7067138  Calochortus luteus A. G. Vestal 1947-4-30 s.n. Butte Road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626369mE, 4388455mN. Comment
  CAS-BOT-BC491858  Calochortus luteus H. C. Cantelow 1940-5-10 s.n. Butte 10miles east of Oroville, Bidwell Bar Bridge Comment
  POM215697  Calochortus luteus D. D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor. Comment
  SBBG57700  Calochortus luteus M. M. Miles -Jun-1886 Butte Butte County [no specific locality] 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
  CHSC77453  Calochortus tolmiei Laura Bogni 1997-4-5 12 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CAS-BOT-BC175755  Caltha leptosepala H. F. Copeland 1929-6-10 1239 Butte Jonesville 1524 Comment
  RSA337395  Calycadenia multiglandulosa subsp. bicolor L. Ahart, Peter Ahart 1984-6-10 4687 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  CAS-BOT-BC106097  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CHSC30687  Calycadenia oppositifolia M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2294 Butte Magalia serpentine area rd to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC86592  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-7-11 7897 Butte Northern High Sierra Nevada. Above northeast edge of North Fork Feather River arm of Lake Oroville, 1200 m north of mouth of French Creek. 305 Comment
  RSA788204  Calycadenia oppositifolia R. L. Carr 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave, 100 yds NW of rd. 244 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
  UCD129783  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  SEINET10473679  Calycadenia oppositifolia Mary Susan Taylor 1980-5-31 Taylor 2753 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC270735  Calycadenia pauciflora Bruce G. Baldwin; Gerald D. Carr 1988-6-9 711 Butte Wurlitzer Ranch, 1 mile N of Broyles Road Comment
  UCD135719  Calycadenia pauciflora Bruce G. Baldwin; Gerald D. Carr 1988-6-9 711 Butte Wurlitzer Ranch, 1 mile north of Broyles Road. Comment
  JEPS120033  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  CHSC45647  Calycadenia truncata Vernon Oswald 1985-6-24 1860 Butte East side of Paradise Lake S of Mosquito Creek. 780 Comment
  UC89045  Calycadenia truncata H. E. Brown Nov 15 1896-Nov 30 1896 121 Butte near Clear Creek 53 Comment
  SD50979  Calycadenia truncata Darley F. Howe 1960-9-20 2981 Butte 8 miles from Oroville, north fork of Feather River Canyon. 149 Comment
  UCD129875  Calycadenia truncata Gerald D. Carr 1971-6-15 562 Butte 0.4 miles west of east boundary of Upper Bidwell Park, SE of Chico. 171 Comment
  SEINET10535838  Calycanthus occidentalis Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5509 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC33652  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3167 Butte N of Magalia and NE of De Sabla, just NE of junction of Skyway and Humbug/Humboldt Roads. 853 Comment
  CHSC33654  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-9-5 3155 Butte Along Skyway near De Sabla, 0.4 mi S of junction with Humbug Road leading to Nimshew. Comment
  CHSC37362  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3683 Butte Along Highway 32, 7.5 miles S of Tehama/Butte County line. Comment
  CHSC92549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8373 Butte Northern High Sierra Nevada. Plumas National Forest; on Saw-mill Peak, 350 m east of the Lookout Tower; 2.2 km east of Magalia. 991 Comment
  UC1794960  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19866 Butte Between Paradise and Magalia; besides Skyway 650 Comment
  CHSC68904  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte South side of the dirt road, southeast of cCold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City 1219 Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  POM32729  Camissonia graciliflora Kate Conger 1905-1 s.n. Butte Brush Creek Comment
  SEINET10972407  Campanula prenanthoides Howell 1976-7-14 Howell 51818 Butte SIERRA NEVADA, JUST NE OF PULGA BRIDGE, SHADED, GRANITE-LIKE ROCK 1370 Comment
  CHSC61304  Campanula scouleri Lowell Ahart 1993-7-23 7110 Butte On the sides of a small 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 northeast of Feather Falls. 1036 Comment
  CHSC26512  Capsella bursa-pastoris P. Moyer 1972-3-4 109 Butte CSUC Campus. 1st and 2nd on Ivy, w side. 60 Comment
  POM196110  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC29224  Cardamine oligosperma M. S. Taylor; J. D. Jokerst 1980-3-28 2406 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CHSC39070  Cardamine oligosperma R. A. Schlising 1983-3-20 4393 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. Comment
  SFV10373  Cardamine oligosperma M. L. Vincent 1964-4-8 509 Butte Sierra Nevada PG&E powerplant, Feather River Canyon. 2 miles northeast of new bridge. 475 Comment
  UCSB63620  Cardamine oligosperma Seaman, Cynthia 1980-3-21 Butte Berry Creek Quadrangle, T21N R4E ne 1/4 mi. off Big Bend Rd. on old dirt road, ca. 4 mi. off Hwy. 70, ca. 25 mi. e of Chico 365 Comment
  CHSC70789  Cardamine pachystigma B. Castro 1995-5-18 568 Butte Ca 2 air mi N of Feather Falls, toward western end of Watson Ridge, on S side of USFS Rd 21N25. 15-20 ft S of road edge. 1094 Comment
  CHSC96367  Cardamine pachystigma George Hartwell 2007-2-19 Butte Northern Sierra Nevada Foothills. Dark Canyon Road. 294 Comment
  JEPS105650  Cardamine pachystigma L. P. Janeway, Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River 341 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CHSC43926  Carduus pycnocephalus Vernon Oswald 1988-5-5 3296 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the highway near Dry Creek. 53 Comment
  JEPS119892  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 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
  JEPS120951  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2013-4-20 18548 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC106600  Carex L. P. Janeway 2011-4-13 10229 Butte Sacramento Valley. Oroville; Centennial Plaza on top of the levee on the south side of Feather River between the north ends of Lincoln Street and Oak Street. 57 Comment
  CHSC48551  Carex L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3090 Butte Scotts John Cr 2.3 mi N of the Butte Cr Rd. 1889 Comment
  CHSC52745  Carex L. P. Janeway 1988-7-29 3134 Butte Near West Branch Feather River at crossing of road into Coon Hollow. 1615 Comment
  CHSC113937  Carex abrupta Lowell Ahart 2014-8-13 19707 Butte 20 yards east of the east edge of a large wet meadow (some bog), about 130 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  SEINET11063328 Image available Carex abrupta L. Janeway, Gog, L 2008-1 3201 A,B Butte Scott's John Creek, Intersection with Rd. 26N27 Comment
  CHSC68907  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte Edges of a small stream from springs, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CAS-BOT-BC17901  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  SEINET10828994  Carex aquatilis var. altior H. E. Brown 1896-11-15 Brown s.n. Butte Near Clear Creek, Butte County. Comment
  UC600700  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville 1524 Comment
  CHSC42822  Carex aurea L. P. Janeway 1987-6-20 2273 Butte Near Fall River, 3.0 mi north of the Feather Falls-Lumpkin Ridge Rd along the rd to Fall River and Cascade. 1013 Comment
  RSA4411  Carex aurea E. B. Copeland 1930-6-23 s.n. Butte Jonesville. 1500 Comment
  CHSC86862  Carex barbarae L. P. Janeway; Gavin Blosser 2003-4-23 7766 Butte Northern Sierra Nevada Foothills. South side of South Fork Feather River arm of Lake Oroville; between Stringtown Road and the lake; 1.9 km east of Stringtown Mountain. 305 Comment
  CAS-BOT-BC19199  Carex barbarae L. P. Janeway 1988-6-25 2853 Butte Along small creek below Hwy 191 (Clark Road), 3.0 miles north of Durham-Pentz Road. 176 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
  SEINET7552591 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11403 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  SEINET10706541  Carex bolanderi Lawrence P. Janeway 1987-6-8 Janeway 2156 Butte T22N, R6E, Brush Creek Quad, NW 1/4 of sec 19. Along French Creek ca 1/2 mile north of Bush Creek and near bridge of road to Coyote Gap. In sand and rocks (granitic) adjacent to the creek; shady. 640 Comment
  CHSC44105  Carex cusickii L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2510 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC115466  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-3 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CHSC95030  Carex cyrtostachya L. P. Janeway 2006-8-6 8826 Butte Northern High Sierra Nevada. Near road along west side of Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CAS-BOT-BC34951  Carex densa Lowell Ahart 1980-5-12 2249 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC47130  Carex densa Vernon Oswald 1983-4-6 294 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. 198 Comment
  SEINET7556729 Image available Carex densa Lowell Ahart 1987-5-10 5610 Butte Banks of Wyandotte Creek, 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
  CAS-BOT-BC422333  Carex divulsa subsp. divulsa P. F. Zika; L. Janeway 2012-5-17 25873 Butte Near Camelia Way bridge, N bank of Big Chico Creek, Chico, Sacramento Valley (ScV), Ahart's station 60 Comment
  CHSC97410  Carex echinata subsp. echinata Robert Fischer 2006-6-17 1029 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1524 Comment
  CHSC53709  Carex feta L. P. Janeway 1987-5-20 2077 Butte Soggy drainage along Hwy 70 2.1 mi NE of Pulga bridge, near Heinz Creek. 457 Comment
  JEPS114981  Carex feta Lowell Ahart 2008-6-13 14818 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  SEINET12649387 Image available Carex flacca L. P. Janeway 2009-1 9795 Butte 59 Comment
  CHSC104784  Carex fracta L. P. Janeway 2010-6-19 10027 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  POM213963  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  SEINET7468095 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
  CHSC45256  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising 1988-7-1 2931 Butte Mdw between the pair of lakes at the SE-most headwaters of Butte Cr. 1965 Comment
  CAS-BOT-BC146661  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown 838 Comment
  CHSC42827  Carex hirtissima L. P. Janeway 1987-6-8 2180 Butte 3.0 mi S of Big Bar Mtn via rd. 1021 Comment
  SEINET11191798  Carex hoodii Unknown 1999-7-17 6506 Butte Butte County Comment
  SEINET4286141 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 A Butte Just east of Philbrook Resevoir. Comment
  CHSC113469  Carex integra Lowell Ahart 2014-7-10 19617 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS110201  Carex integra Lowell Ahart 2006-7-16 12990 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC94042  Carex inversa Peter F. Zika 2010-5-16 24826 Butte Robinson Street near Lincoln Street, Oroville, Ahart's station, Sacramento Valley (ScV) 50 Comment
  CHSC44931  Carex laeviculmis Lowell Ahart 1988-7-31 6154 Butte Road gutter, north of a small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  RSA122447  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  UC1563264  Carex laeviculmis Lowell Ahart and Vernon Oswald 1990-8-14 6576 a Butte ca. 0.75 mi w of n end Sly Creek Reservoir (along a small branch of French Creek, on the n side of Forest Rd. 21N16); French Creek 1219 Comment
  CHSC106510  Carex lemmonii Peter F. Zika 2009-6-17 24520 Butte Cascade Range Highlands (CaRH). Below Concow Road 11.5 road miles above (N of) Route 70, at Dixie Road. 1210 Comment
  RSA0058976  Carex leptopoda Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-7 18176 Butte On the north edge of Big Chico Creek, near Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC83295  Carex luzulina L. P. Janeway; B. Castro 2002-7-7 7607 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC110450  Carex multicaulis L. P. Janeway 2013-5-16 11102 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +/- overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  CHSC36893  Carex multicaulis L. Ahart 1982-6-4 3537 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC44696  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3141 Butte SW-facing slope above Coon Hollow; near dirt rd 1.2 mi W of its high point near the county line. 1950 Comment
  CAS-BOT-BC119566  Carex nudata Lowell Ahart 1980-5-12 2250 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1609337  Carex nudata Lowell Ahart 1993-4-8 6932 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CHSC94253  Carex pachystachya Lowell Ahart 2006-7-16 12980 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC112105  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. 64 Comment
  CHSC46996  Carex praegracilis Vernon Oswald 1988-4-26 3281 Butte Gray Lodge Waterfowl Management Area, just s of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CHSC48560  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3078 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CAS-BOT-BC117984  Carex rossii L. P. Janeway; Robert A. Schlising; B. Castro 1988-7-23 3088 Butte Jonesville quad. Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  CHSC89738  Carex specifica L. P. Janeway; Robert F. C. Naczi 2004-7-24 8183 Butte High Cascade Range. Near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. 1737 Comment
  CAS-BOT-BC116737  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CHSC11933  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. In woods by Jones Creek. 1500 Comment
  CHSC36883  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1658 A Butte Coon Hollow along the edges of forest service road 26N74 ca 1/2 mi W of the West Branch Feather River. N of Philbrook Resv. Comment
  SEINET10946215  Carex subfusca Lawrence P. Janeway 1988-6-16 Janeway 2798 Butte T25N, R3E, Butt Meadows quad (15') SE1/4 of sec. 12. SE-facing slope above Butte Cr; along rd in W side of canyon, 3.7 mi S of Humboldt Rd. 1295 Comment
  RSA769160  Carex texensis P. F. Zika 2010-6-22 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, south of Mansion Ave., Chico. 60 Comment
  CHSC105823  Carex utriculata Lowell Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC33772  Carex vernacula J. D. Jokerst; L. Ahart, M. S. Taylor, H. Wurlitzer 1981-7-31 1040 Butte Top of Humboldt Peak ca 50 meters N of summit, northern-most portion of Butte County. Comment
  UC1594543  Carex vesicaria Lowell Ahart 1992-7-21 6806 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow) 1737 Comment
  CHSC99390  Carex whitneyi Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10532 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. Upslope from creek. 1740 Comment
  CHSC67389  Castilleja affinis James D. Jokerst; R. A. Schlising 1985-4-8 2225 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  SEINET10549323  Castilleja affinis Lowell Ahart 1985-5-10 Ahart 4947 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UCR133594  Castilleja applegatei H. F. Copeland 1927-9-2 952 Butte Jonesville 1524 Comment
  UC885465  Castilleja applegatei subsp. pinetorum A. A. Heller 1917-7-26 12737 Butte Butte Meadows 1280 Comment
  SEINET10964360  Castilleja applegatei var. fragilis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4074 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  JEPS124207  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-11 20030 Butte About 1 1/2 miles northeast of Honcut, about 1/2 miles east of Parlemo Honcut Highway, about 12 miles (air) south of Oroville. Comment
  UC1609089  Castilleja campestris subsp. campestris Lowell Ahart 1993-5-17 6950 Butte about 1.5 mi n and 3 mi e Honcut (on the w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  CHSC4917  Castilleja exserta R. L. Adams 1964-3-24 56 Butte Open field NE of Chico. Manzanita Ave. E. of Manzanita School, Chico. Comment
  CAS-BOT-BC241124  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  CHSC114976  Castilleja pruinosa Lowell Ahart 2015-4-13 20035 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  CHSC11071  Castilleja subinclusa Lowell Ahart 1968-3-14 Butte Swede's Flat Road, near Honcut Creek. 304 Comment
  CHSC43514  Castilleja subinclusa Lowell Ahart 1976-4-15 1077 Butte Along the edge of Swedes Flat Road, near the bridge across Rocky Honcut Creek, north-east of Bangor. 457 Comment
  CHSC115407  Catalpa bignonioides M. Rogers 2013-5-20 Butte City of Chico residence on Pennisue Way. 60 Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  CHSC1501  Ceanothus cuneatus L. Stone 1930-3-9 Butte Near Richardson Springs. 152 Comment
  CHSC51074  Ceanothus cuneatus Pauline Broyles 1988-2-25 1097 Butte The Nature Conservancy Vina Plains Preserve. On e. side of Singer Creek in n.e. portion of Wurlitzer Addition. Atop the bank of the creek. Comment
  CAS-BOT-BC47958  Ceanothus integerrimus Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC101156  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  SJSU5725  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather R Canyon, Pulga 487 Comment
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  UCSB63612  Ceanothus integerrimus McBride, Marjorie 1986-4-13 Butte 10.7 mi n of Chico, E side of Hwy 32. Paradise West Quadrangle, 7.5'. W center Sect. 25. T23N, R2E. 536 Comment
  CAS-BOT-BC51728  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope fo the Sierra near Forest Ranch 822 Comment
  CHSC42493  Ceanothus lemmonii Lowell Ahart 1987-5-11 5619 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CAS-BOT-BC52010  Ceanothus prostratus John Thomas Howell 1978-4-18 52850 Butte De Sabla 853 Comment
  CHSC32744  Ceanothus prostratus M. S. Taylor; L. Hanson, J. Horner 1981-4-16 3542 Butte N side of 21N31Y, ca. 1/4 mi. w of Bald Rock Rd, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  SD2952  Ceanothus prostratus E. B. Copeland 1930-7-7 Butte Jonesville 1600 Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  UC1071460  Ceanothus velutinus C. G. Albertus 1933-7-25 49 Butte just s Thompson's; Chico Quadrangle Comment
  CHSC3024  Celtis australis Carl Pejsa 1958-4-19 22 Butte Bidwell Park Forestry Station. Comment
  CHSC61294  Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte On the west side of La Porte Road, about 2 miles south-west of Clipper Mills. 1066 Comment
  CDA34188  Centaurea maculosa Ed Finley 2010-6-2 PDR# 1303791 Butte Paradise; Horning Ranch, Edgewood Lane. 0 Comment
  CHSC32681  Centaurea melitensis M. S. Taylor 1981-3-24 3447 Butte S side of Hwy 70, in turn out just e of Poe Dam, ca. 1 mi e of Pulga, in turn out. 487 Comment
  CHSC44892  Centaurea melitensis Lowell Ahart 1988-7-24 6129 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CAS-BOT-BC272091  Centaurea melitensis Lowell Ahart 1988-7-24 6129 Butte In logged over area, about 1/20 mile north-east of the intersection of Ponderosa Way adn Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  OBI69158  Centaurea solstitialis Kari Fisher 2000-10-7 11 Butte Lindo Channel, 100 ft from E. First St 82 Comment
  SEINET10473683  Centaurea solstitialis Mary Susan Taylor Taylor 776 Butte Weedy or cultivated plants of Chico. 61 Comment
  JEPS88573  Centaurium muehlenbergii Vernon H. Oswald and Lowell Ahart 1996-6-10 7758 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit; US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, NE corner of Tract 7.2, Sanctuary 1 33 Comment
  JEPS127004  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte About 200 yards west of Loma Rica, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC288526  Centromadia fitchii David D. Keck 1932-7-2 1613 Butte 6 miles NE of Oroville, on road to Quincy 250 Comment
  SFV3982  Centromadia pungens M. L. Vincent 1960-9-8 53 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  JEPS106000  Centunculus minimus Lowell Ahart 2004-4-4 10716 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC48251  Cerastium fontanum subsp. vulgare Vernon Oswald 1984-5-16 1187 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek at Five Mile Recreation Area. In lawn. 82 Comment
  CHSC103669  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC61307  Cerastium glomeratum Lowell Ahart 1993-7-23 7096 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CAS-BOT-BC388258  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  JEPS43470  Cercis occidentalis Joan O. Danielson 1966-4-6 37 Butte steep slope 800 ft above Nelson's Bar 609 Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  CAS-BOT-BC136998  Cercocarpus betuloides var. betuloides A. A. Heller 1915-4-12 11808 Butte Near Cohasset Comment
  CHSC78096  Cercocarpus betuloides var. betuloides Caleb E. Casey 1999-4-9 Butte South rim trail near Bear Hole, Upper Bidwell Park. Trail one half mile before Bear hole. 121 Comment
  CHSC104005  Chamaecyparis lawsoniana Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16741 Butte On the south side of the path, about 30 yards south of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
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Jul 25 2018
  CAS-BOT-BC279775  Chamaemelum fuscatum Lowell Ahart 1989-3-20 6193 Butte 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
  CHSC83079  Chamaesyce maculata Lowell Ahart 2002-10-17 9994 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS120594  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 2.5 air miles northeast of Hurleton. Comment
  JEPS13271  Chamaesyce ocellata Rimo Bacigalupi with G. T. Robbins 1955-7-15 5300 Butte 3.5 mi s Chico (0.5 mi s of the Hooker Oak) 80 Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  JEPS115728  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CDA34143  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart, J. Dittes, J Guardino 2009-9-13 16404 -A Butte Peter Ahart Ranch, about 2 miles north and 0.25 miles east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC40901  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-11-7 5230 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  RSA754845  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  SEINET10529873  Cheilanthes cooperae Mary Susan Taylor 1980-4-16 Taylor 2484 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
  JEPS124194  Cheilanthes gracillima Lowell Ahart 2015-10-9 20547 Butte About 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir Dam. Comment
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10479003  Chenopodium album Mary Susan Taylor 1980-7-6 Taylor 3062 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET10871671  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1977-8-16 Taylor 1445 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CDA3122  Chenopodium multifidum D. G. Kelch 2006-8-2 6 .349 Butte Butte Creek, north of Durham-Dayton Highway. Comment
  CHSC34047  Chenopodium murale L. Ahart 1981-7-26 3002 Butte On sides of large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC11807  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville. 1550 Comment
  CHSC44073  Chimaphila umbellata L. P. Janeway 1987-6-8 2160 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of rd to Coyote Gap. 640 Comment
  CDA20065  Chondrilla juncea E. Finley 2002-10-2 PDR 1035510 Butte Northern California; Lumpkin Rd near Enterprise Bridge. 0 Comment
  SEINET10970722  Chorizanthe polygonoides Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5392 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  JEPS117238  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-16 16705 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 381 Comment
  RSA768994  Chorizanthe polygonoides var. polygonoides L. Ahart 2010-5-16 16705 Butte Open pasture field about 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 381 Comment
  POM219008  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville. 1650 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
  UCR7827  Cichorium intybus Wm. Horn Jr. 1964-6-28 640628- 01 Butte California Div. of Forestry Station; along road 1083 Comment
  POM219646  Circaea alpina subsp. pacifica H. F. Copeland 1928-8-21 428 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  UC398936  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville 1500 Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CDA21649  Cirsium douglasii var. breweri L. Ahart 2006-8-15 13188 Butte 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. Comment
  CAS-BOT-BC288042  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  CHSC37273  Cirsium vulgare L. Ahart 1982-8-10 3739 Butte Around rice field, Peter Ahart Ranch, ca. 2 1/2 mi n and 1/2 mi e of Honcut. 50 Comment
  UC1586571  Citrullus colocynthis var. lanatus Vernon H. Oswald and Lowell Ahart 1990-10-11 4458 Butte about 4 mi s of Jarbo Gap (Dark Canyon arm of Lake Oroville); Lake Oroville 259 Comment
  SEINET10865742  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-B Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  SEINET12191961  Clarkia arcuata Unknown 1978-1 12 Butte ca 300 ft. W side of Cherokee Rd, ca 5 mi S from intersection of Hwy 70 and Cherokee Rd 137 Comment
  SD122548  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, ca. 1/8 mile West of Ponderosa Dam, ca. 2 miles North West of Forbestown. 370 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
  CHSC30014  Clarkia concinna subsp. concinna L. Ahart 1980-5-25 2341 Butte Near the edge of Ponderosa Way, ca. 2 mi s of the Ponderosa Dam, near Forbestown. 600 Comment
  CHSC3329  Clarkia concinna subsp. concinna Robert L. Smith 1966-5-17 4 Butte Honey Run Rd., 3 miles W of Paradise. Comment
  CHSC1103  Clarkia gracilis subsp. albicaulis R. Carter 1964-6-15 125 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC39036  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1983-7-22 4429 Butte E part of county, SE of Brush Creek on Milsap Bar Road, at crossing of Indian Creek; roadside. 853 Comment
  CAS-BOT-BC163276  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River 1100 Comment
  CHSC43217  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1987-6-26 2302 Butte 0.4 mi E of Granite Ridge along road to Lynch and Logue Meadows. Roadcut. 1249 Comment
  CHSC71159  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4681 Butte Granite Ridge; along Concow Road 0.1-0.2 mi north of junction; east side of ridge top, above Camp Creek. 1310 Comment
  CAS-BOT-BC163357  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek 786 Comment
  UC1730253  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte Swayne Hill, S end, along Road 23N28 0.8 mi W of Road 22N34 731 Comment
  CHSC10819  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA31284  Clarkia purpurea subsp. quadrivulnera H. C. Cantelow 1940-5-10 s.n. Butte 8.5 miles SW of Oroville, Highway 24 Comment
  SD122549  Clarkia purpurea subsp. viminea Lowell & Peter Ahart 1984-5-28 4650 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road ca. 2 miles East of Old Yankee Hill, ca. 16 miles NE of Oroville. 449 Comment
  CHSC70746  Clarkia rhomboidea L. P. Janeway 1993-6-10 4383 Butte Southwest side of Watson Ridge about 1.5 mi east of Bald Rock Dome. 822 Comment
  SEINET10453167  Clarkia rhomboidea Mary Susan Taylor 1981-5-21 Taylor 3790 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  POM196082  Claytonia palustris H. F. Copeland 1929-6-9 s.n. Butte Jonesville. 1524 Comment
  CAS-BOT-BC439425  Claytonia parviflora subsp. parviflora Lowell Ahart 1988-3-27 5937 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC439429  Claytonia parviflora subsp. parviflora A. A. Heller 1919-4-12 13100 Butte Cherokee Mine Comment
  CHSC38628  Claytonia parviflora subsp. parviflora Vernon Oswald 1983-2-19 88 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. at Parking Area T (3.3 mi e of the power lines). Growing on the shaded side of a rock culvert. 219 Comment
  CHSC64126  Claytonia perfoliata Michael Deal 1992-4-19 1 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  CHSC112352  Claytonia perfoliata subsp. perfoliata L. P. Janeway 3024-04-09 11223 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 22N12Xwhere it crosses Peavine Creek just below the confluence of Coon Creek; French Creek Basin. 762 Comment
  CHSC39068  Claytonia perfoliata subsp. perfoliata R. A. Schlising 1983-3-20 4395 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99, and across from Thermalito Afterbay. On hilltop near scattered trees. Comment
  SEINET195015  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte Chico CA Comment
  SEINET10572739  Claytonia rubra Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4743 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC33589  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-28 3564 Butte N side of rd 23N28.2 in loop of rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70, ca 23 air mi nw of Oroville. 929 Comment
  CHSC36361  Claytonia rubra subsp. rubra J. D. Jokerst 1982-5-19 1575 Butte Abundant in open rocky areas on top of Lumkin Ridge. North of Lumpkin Ridge Rd. 1280 Comment
  CHSC56075  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-19 2841 Butte 3.4 mi north of Stirling City towards Inskip; along logging road 0.2 mi west of and parallel to Skyway. 1219 Comment
  CHSC28506  Clematis ligusticifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2250 Butte By bridge over creek, Jordan Hill Rd (Ponderosa Way on some maps), ca. .8 mi n of its jct with Concow Rd., ca. 5 mi e of Paradise. 426 Comment
  CHSC42810  Clintonia uniflora L. P. Janeway 1987-6-13 2221 Butte Along Concow Rd just SW of rd to Five Corners and Stirling City. 1188 Comment
  POM42868  Collinsia heterophylla C. C. Bruce 1897-04 1846 Butte Little Chico. Comment
  RSA408294  Collinsia heterophylla Michael A. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  POM252814  Collinsia sparsiflora var. bruceae A. A. Heller 1938-4-23 15053 Butte On Highway #24 near the summit above the junction with the Yankee Hill road. 610 Comment
  POM43045B  Collinsia sparsiflora var. bruceae C. C. Bruce 1897-03 2062 Butte [No location information provided.] Comment
  POM252812  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte On the Feather River Highway 23 miles from Oroville. Comment
  SBBG29160  Collomia tinctoria E. B. Copeland 1931-6-29 Butte Jonesville 1500 Comment
  UC600657  Collomia tinctoria H. F. Copeland 1937-9-4 954 Butte Jonesville Comment
  UCD118256  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. Along Butte Creek. 1500 Comment
  CHSC45309  Comandra umbellata subsp. californica Vernon Oswald 1985-4-28 1723 Butte Upper Bidwell Park, Chico, along Yahi Trail where it first parallels Chico Creek e of Parking Area R. 158 Comment
  CAS-BOT-BC285919  Conyza bonariensis Lowell Ahart 1982-9-9 3771 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC237925  Cordylanthus Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS104641  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, ca 1/2 mi n of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 320 Comment
  POM31834  Coreopsis stillmanii C. C. Bruce 1897-05 1987 Butte Iron Canyon. Comment
  POM253233  Cornus californica A. A. Heller 1938-7-20 15282 Butte Snag Lake east of Chaparral on the Humbug Road. 1524 Comment
  CHSC27211  Cornus florida var. rubra P. Moyer 1972-5-1 224 Butte CSUC Campus. N side Chico Creek, e side entrance Gus Magnolis Bridge. 60 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
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  UC177586  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek Sierra Nevada Mts., Butte Creek 1500 Comment
  SD52101  Corylus cornuta var. californica Frank Stephens Jun 1894 9694 Butte Mountain Home Comment
  CHSC54345  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC29005  Cotula coronopifolia M. S. Taylor 1980-4-4 2463 Butte SW corner of jct of Melody Lane and Palermo-Honcut Hwy, ca. 12 mi s of Oroville. 38 Comment
  CHSC113357  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC31652  Crassula aquatica L. Ahart 1974-5-22 456 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31889  Crassula aquatica L. Ahart 1975-5-11 753 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS122204  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC40608  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, West of Yankee Hill. 550 Comment
  JEPS122139  Crassula connata Lowell Ahart 2014-5-2 19425 Butte About one mile northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC29227  Crassula tillaea M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2444 Butte Ca. 500 yds n of Swedes Flat Rd, ca. 50 ft w of Rocky Honcut Creek, ca. 2 mi e of Oroville-bangor Hwy, ca. 10 mi s of Oroville. 365 Comment
  CHSC31654  Crassula tillaea L. Ahart 1973-3-16 176 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS103517  Crassula tillaea Lowell Ahart 2002-4-10 9479 Butte Along the edge of the gravel roads, E of Parking Lot 10, Gray Lodge State Wildlife Management Area, ca 4 miles (air) SW of Gridley. 22 Comment
  JEPS119698  Crassula tillaea Lowell Ahart 2012-5-2 17980 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. Comment
  CAS-BOT-BC290528  Crepis capillaris Lowell Ahart 1988-6-29 6092 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  UCR51795  Crepis occidentalis subsp. pumila H. F. Copeland 1931-11-6 1532 Butte Jonesville, near Butte Creek Meadows. 1829 Comment
  CAS-BOT-BC376468  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte W side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap 853 Comment
  SEINET5327042  Crotalaria retusa R. McKee 1914-9-1 s.n. Butte U.S. Plant Introduction Garden, Chico, CA Comment
  CHSC91472  Croton setiger Lowell Ahart 2005-7-13 12153 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC116731  Crucianella angustifolia Lowell Ahart 2016-5-25 20877 Butte On north side of the water ditch, about 200 yards south of La Porte Road, about1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS115618  Crucianella angustifolia Lowell Ahart 2009-5-15 15706 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SEINET10500612  Crucianella angustifolia Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4037 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
  CHSC38801  Crypsis schoenoides Vernon Oswald 1983-7-21 888 Butte Upper Bidwell Park, Chico, in Lindo Channel neqar the flood-control gates. 79 Comment
  CHSC58889  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte Along a small wash, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC61302  Cryptantha affinis Lowell Ahart 1993-7-31 7140 Butte On the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC96816  Cryptantha affinis Lowell Ahart 2007-5-29 13926 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 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. 636 Comment
  RSA774125  Cryptantha affinis L. Ahart 2010-9-21 17228 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC58256  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  SEINET10497604  Cryptantha hendersonii Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4180 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC44897  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  UC1563267  Cucumis melo Lowell Ahart 1990-5-10 6629 Butte about 1/4 mi south west of Enterprise Bridge across Lake Oroville (McCabe Creek); , McCabe Creek 228 Comment
  CAS-BOT-BC85560  Cupressus macnabiana Henry Klopfer 1926-5-1 s.n. Butte Between Paradise and Magalia. Comment
  CHSC40346  Cupressus macnabiana Lowell Ahart 1985-5-15 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles north-east of Jarbo Gap. 731 Comment
  NY16718  Cupressus macnabiana C. B. Wolf 1934-10-5 6161 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
  SEINET10531460  Cupressus macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Wolf 2122 Butte Sierra Neveda Foothills, at Magalia. Upper sonoran:- Digger Pines. Sun. Bright green serpentine. 700 Comment
  UC1191664  Cuscuta californica Herbert L. Mason and Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge Butte Sink Comment
  SEINET10496606  Cuscuta californica Lowell Ahart 1985-6-17 Ahart 5066 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC11910  Cuscuta californica var. papillosa E. B. Copeland 1931-7-17 675 Butte Jonesville. 1650 Comment
  UC1594627  Cuscuta campestris Lowell Ahart 1992-5-23 6772 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road) 30 Comment
  JEPS110300  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC61292  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CHSC32142  Cynoglossum grande L. Ahart 1975-4-1 731 Butte Trail head to Feather Falls near Feather Falls community. 487 Comment
  CHSC109631  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  JEPS116093  Cynosurus echinatus Lowell Ahart 2009-5-15 15674 Butte 80 yards east 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 271 Comment
  SEINET10872741  Cyperus aristatus Lowell Ahart 1985-11-7 Ahart 5232 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  JEPS110275  Cyperus bipartitus Lowell Ahart 2006-9-28 13378 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  CHSC85757  Cyperus difformis G. F. Hrusa; T. D. Wilfred 1996-9-5 13564 Butte Butte Basin. In rice fields adjacent to Durnel Road north of Nelson Rd. [Lat./Long. on label is '39 degrees 34' N; 121 degrees 39' W']. 33 Comment
  SEINET13709788  Cyperus difformis Lowell William Ahart, Lowell William Ahart 2002-1 9930 Butte E Side Cherokee Rd., 1 Mi. N of Oroville (39 Deg 31'49.5"N, 121 Deg 33'15"W) 427 Ft. 130 Comment
  UC1100549  Cyperus difformis Herbert L. Mason and Verne Grant 1946-8-14 13024 Butte canal near big pond on Sacramento Outing Club; Butte Sink Comment
  UCD141013  Cyperus difformis E. M. Johnston 1915-1 W- 132 J Butte Biggs. Comment
  CHSC28616  Cyperus eragrostis M. S. Taylor 1979-10-3 2223 Butte In Butte Creek Canyon, ca 1/4 mi upstream from bridge corssing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  UC1100538  Cyperus eragrostis Herbert L. Mason and Verne Grant 1945-7-10 12634 Butte n. of Marysville (marshes along Butte Creek, Butte Sink); Butte Sink, Grey Lodge Game Refuge Comment
  CHSC100231  Cyperus erythrorhizos John Dittes 2003-10-8 848 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
  SEINET3450848  Cyperus erythrorhizos Unknown 2003-6-30 10334 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  UC1100468  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13023 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  HSC102790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte Chico, Lower Bidwell Park, west of Cedar Grove, ~100 yds. west of Table 4, on the south side of Big Chico Creek 69 Comment
  RSA724967  Cyperus flavescens L. Ahart 2006-10-8 13429 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Hwy 70, about 0.5 mile north of the Cresta Power House. 610 Comment
  UCD169601  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS98262  Cyperus fuscus Lowell Ahart 2000-7-23 8603 Butte 12 air mi SW of Chico (near a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ordbend) 32 Comment
  SEINET176617  Cyperus inflexus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  UCR257984  Cyperus iria Whitney Brim-Deforest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs, in rice field located just on the north side of West Hamilton Road, c. 1.74 miles west of Hwy 99 30 Comment
  CHSC68401  Cyperus niger L. P. Janeway 1988-6-19 2825 Butte Seepy area along Honey Run Road 0.9 mi southwest of The Skyway. 411 Comment
  JEPS115055  Cyperus niger Lowell Ahart 2007-11-3 14554 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  SBBG50539  Cyperus niger J. T. Howell 1959-9-20 Butte eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  CAS-BOT-BC114022  Cyperus rotundus Ernest Bevan; Lorene Bevan 1974-11-24 s.n. Butte Near Honcut 36 Comment
  CAS-BOT-BC114201  Cyperus strigosus Lowell Ahart 1987-9-24 5901 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC116137  Cyperus strigosus Lowell Ahart 2015-11-7 20632 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  RSA725029  Cyperus strigosus L. Ahart 2006-9-11 13299 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  RSA755341  Cyperus strigosus L. Ahart 2009-8-13 16276 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. 69 Comment
  UC600566  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte gulch draining into Butte Creek meadows Jonesville 1800 Comment
  CHSC42902  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CAS-BOT-BC445502  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte 3 miles west of Chico Comment
  CAS-BOT-BC445503  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley, 5 mi. NW. of Chico on Hamilton City Road. 45 Comment
  CAS-BOT-BC189897  Danthonia californica H. F. Copeland 1931-6-11 1558 Butte Jonesville. Butte Creek Meadows. 1828 Comment
  CDA34740  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte 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. Comment
  HSC100744  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte N side of a poor dirt road, 1 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1900 Comment
  CAS-BOT-BC420351  Darmera peltata A. A. Heller 1916-4-13 12317 Butte Stilson canyon E of Chico Comment
  CAS-BOT-BC173264  Delphinium M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico 457 Comment
  POM253331  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte 2.5 miles from Oroville on the Feather River Hwy. Comment
  CHSC44423  Delphinium hansenii subsp. hansenii Lowell Ahart 1988-6-29 6086 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  JEPS117187  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16760 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico 188 Comment
  CHSC51109  Delphinium nudicaule Ginger S. Gough 1989-4-8 18 Butte Ca. 9 m ese of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  CHSC57139  Delphinium nudicaule J. B. Locey 1975-5-6 19 Butte Ca. 50 yds e of Humbug Road, ca. 1 mi n of Centerville. 182 Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CHSC56772  Delphinium patens M. S. Taylor 1981-5-5 3608 Butte W side of spur rd, ca. 1.5 mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 mi n of Feather Falls. 792 Comment
  CAS-BOT-BC121609  Delphinium patens subsp. patens Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham 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
  CHSC56774  Delphinium patens subsp. patens M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC56777  Delphinium patens subsp. patens J. D. Jokerst 1981-4-2 1167 Butte Table Mountain; south of Cherokee Road where it intersects the east edge of the section, on east side of the mountain. 396 Comment
  RSA400119  Delphinium uliginosum M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC52508  Delphinium variegatum Patricia Collins 1981-4-22 11 Butte Field near the bank of Singer Creek, ca. 21 km nw of Chico. Intersection of Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  UCD96741  Delphinium variegatum J. P. Smith; J. O. Sawyer 1973-4-14 6058 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico. Comment
  SBBG17313  Delphinium variegatum subsp. variegatum M. Vincent 1962-4-15 189 Butte Skyway, 4 mi W of Paradise on the bluff overlooking Butte Crk Cyn Comment
  CAS-BOT-BC82871  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Near Magalia. Comment
  CAS-BOT-BC82876  Dendromecon rigida Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CHSC10711  Dendromecon rigida Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  SEINET10448607  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-4-16 Taylor 3540 Butte T21N R6E nw sec 18, Brush Creek quad. On 21N31Y, W of Bald Rock Rd, ca. 1 mi SE of Brush Creek on Oroville-Quincy Hwy; on Galen Ridge. Yellow Pine Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC194308  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 1988-9-4 6180 Butte Big Kimshew Creek, the creek crosses a large meadow, about 1 air miles north-east of Jones Meadow 1920 Comment
  CAS-BOT-BC194311  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 605 Butte Jonesville, border of the Lily Pond, a permanent pool. 1750 Comment
  CDA31662  Deschampsia danthonioides P. B. Kennedy 1914-5-1 Butte Chico 0 Comment
  CAS-BOT-BC201739  Deschampsia elongata Lowell Ahart 1984-6-10 4700 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC112523  Deschampsia elongata B. Castro 2012-10-18 1990 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  UC1594695  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte ca. 2 (air) mi. n.e. of Philbrook Reservoir (s. side of Coon Hollow) 1737 Comment
  SEINET10508567  Deschampsia elongata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4184 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  UC1126524  Dicentra formosa P. L. Johannsen 1936-6-17 931 Butte 0.5 mi s Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1341 Comment
  CHSC19658  Dicentra spectabilis K. R. Stern 1965-7-23 2195 Butte Chico. Comment
  CHSC44307  Dicentra uniflora Lowell Ahart 1988-3-28 5955 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC2096  Dichelostemma capitatum subsp. capitatum E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC96620  Dichelostemma capitatum subsp. capitatum L. P. Janeway; B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  JEPS113335  Dichelostemma capitatum subsp. capitatum L. P. Janeway and B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  RSA21181  Dichelostemma multiflorum Carl B. Wolf 1937-6-12 8781 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  CAS-BOT-BC501087  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  CAS-BOT-BC501097  Dichelostemma multiflorum John Thomas Howell 1955-6-14 30435 Butte Magalia, Sierra Nevada 731 Comment
  SEINET10472710  Dichelostemma multiflorum Mary Susan Taylor 1981-4-5 Taylor 3488 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10533980  Dichelostemma multiflorum A. Arthur Heller 1915-5-28 Heller 11902 Butte Plentiful near Cohasset in red clay in open places in the chaparral, which here is mainly Quercus oerstediana, with Adenostoma and Toxicodendron. Near the upper limit of the digger pine in the Sierra foothills. Comment
  SEINET12044751  Dichelostemma multiflorum J. H. Morrison 1932-1 s.n. Butte Durham Comment
  SEINET12053818  Dichelostemma multiflorum Unknown 1936-1 13250 Butte along Mud Creek near Chico Comment
  CHSC44434  Dichelostemma volubile Lowell Ahart 1988-5-30 6017 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  CAS-BOT-BC502524  Dichelostemma volubile H. E. Brown 1897-4-15 210 Butte Near Clear Creek Comment
  SEINET12046112  Dichelostemma volubile Unknown 1978-1 29 Butte on N side of Honey Run Rd, ca 5.5 mi E of Chico 76 Comment
  CHSC31657  Dichondra donelliana L. Ahart 1975-5-3 747 Butte Near North Honcut Creek. On Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33903  Digitalis purpurea M. S. Taylor 1981-5-15 3742 Butte Both sides of rd 22N92 between its jct with 23N00.1 and West Branch French Creek, ca 1.5 air mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 883 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
  SEINET10548430  Digitalis purpurea Mary Susan Taylor 1981-5-15 Taylor 3742 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  CAS-BOT-BC208984  Digitaria ischaemum John Thomas Howell 1959-9-20 34642 Butte Eastern outskirts of Oroville - Sierra Nevada 60 Comment
  JEPS110335  Digitaria sanguinalis Lowell Ahart 2006-10-8 13433 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
  UCD64122  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  CHSC47496  Diplacus douglasii Lowell Ahart 1973-3-14 173 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC62786  Diplacus grandiflorus L. P. Janeway 1993-6-3 4368 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). On road cutbank. 731 Comment
  CHSC103691  Diplacus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 304 Comment
  CHSC90152  Diplacus kelloggii Terril Wolt 1970-3-4 2 Butte Found on north side of Concow Creek where it empties into Lake Oroville, 16 mi north of Oroville. Comment
  CHSC63666  Diplacus layneae B. Castro; R. Zebell 1989-4-8 315 Butte Ca 3 mi S of Brush Creek, ca 0.3 mi E of Bald Rock Rd in decomposed granite, along New Bean Creek Rd ca 0.3 mi N of Little Bald Rock. 1005 Comment
  CHSC25293  Diplacus torreyi M. S. Taylor 1977-7-15 1416 Butte On s side of Humbug Rd, ca. 3 mi s of Paradise. 579 Comment
  SEINET223339  Diplacus tricolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-1 3312 Butte Peter Ahart Ranch, ca 2-1/2 mi N-NE of Honcut between Marysville & Oroville 30 Comment
  CHSC45269  Dipsacus fullonum Vernon Oswald 1987-7-21 3142 Butte Between the Midway and the Southern Pacific RR, 0.6 mi s of Nelson. 36 Comment
  CHSC45523  Dipsacus fullonum Lowell Ahart 1988-10-28 6191 Butte On the north side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  CAS-BOT-BC136234  Dodecatheon alpinum H. F. Copeland 1920-8-12 120 Butte Jonesville Meadow 1219 Comment
  CHSC31856  Dodecatheon clevelandii subsp. patulum L. Ahart 1974-2-15 302 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC31869  Dopatrium junceum L. Ahart 1974-7-20 555 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS102537  Dopatrium junceum Vernon H. Oswald 1998-10-22 9675 Butte Rice field at the northeast corner of Hamilton and Riceton roads, Rice Experiment Station northwest of Biggs. 30 Comment
  JEPS120766  Dopatrium junceum Lowell Ahart 2013-9-20 19058 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC51077  Downingia bacigalupii Pauleen Broyles 1987-7-19 1082 Butte Ca 7.2 km (air) NE of Inskip. 1750 Comment
  CHSC112932  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2012-5-23 1922 Butte Sacramento Valley. Ca 1.6 air mi E of Hwy 99 and1 mi N of Hwy 162E off NE edge of Thermallito Afterbay, 0.5 mi WNW old 'Oroville Jen' on maps, now jcn of Tres Vias and Wilbur Roads. Elevation 139-144 ft. 43 Comment
  POM257240  Downingia ornatissima H. L. Mason 1927-5-9 3708 Butte Sacramento Valley, 15 miles W of Oroville. Comment
  UCD115560  Draba verna R. N. Bowman 1977-3-30 1352 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  JEPS104415  Draperia systyla Lowell Ahart 2003-7-12 10376 Butte Near a small stream, on the west side of Milsap Bar Road, ca 2 1/2 miles (air) east of the Brush Creek Work Center, ca 17 miles (air) northeast of Oroville. 1036 Comment
  RSA0011688  Drosera rotundifolia H. F. Copeland 594 Butte Jonesville. 1524 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC23541  Dysphania botrys M. S. Taylor 1975-10-29 968 Butte Along Butte Creek, ca. 250 yds s of Humbug Rd and ca. 2 mi e of junc of the Skyway and Humbug Rd, ca. 8 mi e of Chico, Comment
  CHSC94843  Dysphania botrys Lowell Ahart 2006-10-8 13438 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC27245  Echinochloa crus-galli P. Moyer 1972-6-5 216 Butte CSUC Campus. E of L.S. Bridge, s bank of Chico Ck. Comment
  SBBG126093  Echinochloa crus-galli L. Ahart 2011-10-29 17727 Butte S side of Biggs Princeton Rd, ca 500 yards W of Riceton Hwy, ca 1 mi NW of Biggs 27 Comment
  UC203668  Echinochloa crus-galli A. A. Heller 1914-5-19 11418 Butte 8 mi n Oroville Comment
  SEINET10566996  Echinochloa crus-galli var. zelayensis Lowell Ahart 1977-8-14 Ahart 1549 Butte Flora of Ahart Ranch, On damp soil in a slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  CHSC25340  Echinodorus berteroi M. P. Hayes 1977-8-13 33 Butte Butte College Campus, in northern-most pond between the branches of Clear Creek. 88 Comment
  CHSC28743  Eclipta prostrata R. A. Schlising 1979-10-14 3511 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  SBBG120012  Elaeagnus angustifolia L. Ahart 2006-8-29 13239 Butte ca. 100 yards N of the Headquarters, Gray Lodge Wildlife Area 20 Comment
  CHSC111506  Elatine Lowell Ahart 2014-4-17 19379 Butte On dry black clay soil, bottom of a rice field, about 20 yards north of Faris Road, about 400 yards west of the grain bins, east of the deep ditch, about 2 1/4 miles southwest of Biggs. Agricultural. 24 Comment
  CHSC115335  Elatine Lowell Ahart 2015-4-24 20069 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC117440  Eleocharis acicularis Lowell Ahart 2016-5-24 20868 Butte On the bottom of a large drainage, about 100 yards norfth of the ditch, 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
  JEPS113683  Eleocharis acicularis Lowell Ahart 2007-7-27 14394 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  CAS-BOT-BC113451  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Ca 1/2 mi N of Kinkle Res., ca. 2 mi S of Paradise. 600 Comment
  SEINET7585843 Image available Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC46300  Eleocharis coloradoensis Vernon Oswald 1989-5-23 3781 Butte Gray Lodge Wildlife Area, in the field se of the intersection of Rutherford Rd and the road to Parking Areas 12 and 13. 19 Comment
  CHSC31668  Eleocharis engelmannii L. Ahart 1979-6-2 1911 Butte On the bottom of a large wash in one of the farmed fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC68435  Eleocharis macrostachya L. P. Janeway 1987-5-7 2017 Butte Bottom of Dead Horse Slough draining the California Park lake, just west of California Road and about 300 ft north of Hwy 32. 74 Comment
  JEPS98264  Eleocharis macrostachya Lowell Ahart 2000-10-2 8702 Butte 2 mi SE of Ordbend (near the river and S of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CAS-BOT-BC112788  Eleocharis macrostachya Forman Taylor McLean 1921-9-26 s.n. Butte Weed in rice field, Nelson Comment
  CHSC33150  Eleocharis montevidensis L. Ahart 1978-7-15 1786 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS120890  Eleocharis montevidensis Lowell Ahart 2013-7-6 18837 Butte E side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile N and 2.75 miles E of Honcut, about 13 air miles SE of Oroville. Comment
  SEINET9084724  Eleocharis obtusa var. obtusa L. Ahart 2000-9-4 8685 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  CHSC97340  Eleocharis pachycarpa L. P. Janeway 2007-8-6 9148 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. Carpeting the floor of the pond where water level has dropped, ground still saturated but not standing water. 776 Comment
  CHSC31940  Eleocharis parishii J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-5-18 719 Butte Top of Cohasset Ridge, S facing slope above Mud Cr. 243 Comment
  JEPS115999  Eleocharis parishii Lowell Ahart 2009-6-19 15923 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
  CHSC96094  Eleocharis quadrangulata L. P. Janeway 2006-7-19 8816 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  RSA500437  Eleocharis quadrangulata Vernon H. Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the W side of Cana Pine Creek Road just S of the Tehama Co. line. 55 Comment
  CHSC31670  Eleocharis quinqueflora L. Ahart 1973-5-24 229 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  RSA365441  Eleocharis quinqueflora H. F. Copeland 1929-6-10 1246 Butte Jonesville. 1524 Comment
  JEPS98469  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte 3 1/3 air miles SW of Oroville (SE of a large pond 100 yds S of Feather River, W of break in levee, 1/2 air mile W of Pacific Heights Road); Oroville Wildlife Area 42 Comment
  CDA38982  Eleocharis radicans L. Ahart 2000-9-2 8680 -A Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  CHSC21241  Eleocharis rostellata M. S. Taylor 1975-7-10 837 Butte Ca. 20 ft n of Big Chico Creek, ca. 5 mi e of Golf Course, Upper Bidwell Park, Chico. 121 Comment
  CHSC38909  Eleocharis rostellata Vernon Oswald 1983-6-20 721 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. Growing on the southern-most seep of Upper Park Rd. 128 Comment
  CHSC84278  Eleocharis rostellata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10224 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  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
  CHSC45318  Eleusine indica Vernon Oswald 1988-8-30 3695 Butte California State University, Chico, along Mansion Ave. 59 Comment
  CHSC21138  Elodea canadensis M. S. Taylor 1975-10-4 959 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC31636  Elodea canadensis L. Ahart 1977-11-22 1610 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113280  Elymus caput-medusae Lowell Ahart; John Dittes 2014-5-16 19491 Butte Small drainage on the north side of the poor dirt road, about 200 yards southwest of the lone oak tree, about 1/2 mile east of the end of Lyon Cattle Road, about 3 miles (air) northeast of Los Molinos. 99 Comment
  UCD61801  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC203428  Elymus glaucus subsp. glaucus John Thomas Howell 1961-9-22 36736 Butte Bank of Feather River, Oroville 53 Comment
  CHSC12627  Enemion occidentale M. S. Taylor 1974-3-16 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Comment
  CHSC31009  Epilobium brachycarpum M. S. Taylor 1978-9-8 1894 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CHSC33246  Epilobium brachycarpum Mary Banchero; R. Schlising 1979-9-2 Butte 6 mi NE Forest Ranch on Hwy 32; roadside fill. Comment
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  CDA42894  Epilobium campestre L. Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC105262  Epilobium campestre Lowell Ahart 2010-6-20 16826 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
  CHSC117347  Epilobium campestre B. Castro 2013-12-13 2002 Butte Sacramento Valley. Richvale vernal pools, 500 to 1000 ft W of Hwy 99 directly across from Thermalito Afterbay and just less than 1 mi S of Richvale Hwy. Bottoms of vernal pools south of east-west ditch near S end of property. 33 Comment
  CAS-BOT-BC166846  Epilobium canum subsp. latifolium M. S. Taylor 1982-8-16 5017 Butte S side of jct of Big Kimshew Creek and Bald Mt - Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City 1432 Comment
  CHSC12078  Epilobium canum subsp. latifolium R. N. Bowman 1971-6-11 57 Butte Found on cliffs overlooking Big Chico Creek, Fern Banks, Bidwell Park, Chico. 64 Comment
  CHSC46679  Epilobium canum subsp. latifolium V. Oswald; L. Ahart 1989-8-15 3946 Butte Outcrop between High Lakes Rd and Carr Mine, ca. 2 mi (air) e of Philbrook Reservoir. 1920 Comment
  UC1564743  Epilobium canum subsp. latifolium V. Oswald and L. Ahart 1989-8-15 3946 Butte ca 2 air mi e Philbrook Reservoir (outcrop between High Lakes Rd and Carr Mine) 1920 Comment
  SBBG127998  Epilobium ciliatum subsp. ciliatum L. Ahart 2009-7-9 16003 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  CHSC28386  Epilobium densiflorum J. D. Jokerst 1979-10-12 378 Butte 50 met. E. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Bidwell Park Rd. 213 Comment
  JEPS104196  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  JEPS104290  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the n side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  CHSC26743  Epilobium glaberrimum subsp. glaberrimum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1468 Butte In meadows along Julie's Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  CHSC46578  Epilobium hornemannii subsp. hornemannii Vernon H. Oswald 1989-7-15 3859 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Ditch in the sw corner of the meadow. 1767 Comment
  CHSC92586  Epilobium minutum L. P. Janeway 2005-5-29 8400 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  SBBG32323  Epilobium minutum L. S. Rose 1963-6-2 Butte 2 mi S of Pulga, N Fork of Feather River 579 Comment
  CHSC109667  Epilobium pallidum Lowell Ahart 2012-6-28 18124 -A Butte Near seeps, about halfway between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC109597  Epilobium torreyi Lowell Ahart 2012-5-31 5 /31/2012 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  SFV2  Equisetum arvense M. L. Vincent 1962-4-15 180 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  CAS-BOT-BC57997  Equisetum arvense Saichi Kawahara 1968-5-4 360 Butte Colusa-Hamilton City Road, 1 mi. n. of Princeton Ferry, w. bank of Sacramento River. 30 Comment
  CHSC21043  Equisetum hyemale subsp. affine M. S. Taylor 1975-10-4 965 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC3300  Equisetum hyemale subsp. affine M. L. Hillier 1966-4-23 Butte Above Butte Meadows. Comment
  CHSC38235  Equisetum hyemale subsp. affine Vernon Oswald 1983-6-7 640 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 800 ft e of the footbridge at the golf course. 91 Comment
  CHSC101148  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 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 Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC97293  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  SEINET10555215  Eragrostis hypnoides Lowell Ahart 1995-8-19 Ahart 7614 Butte Normal size plants on dry sandy soil, east side of North Honcut Creek, Peter Ranch about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. 37 Comment
  CAS-BOT-BC292432  Eragrostis pectinacea Lowell Ahart 1984-8-19 4790 Butte About 5 miles SW of Oroville.Area where gravel is removed, N of the state burrow area, W of Pacific Heights Road. 40 Comment
  CDA42964  Eragrostis pectinacea var. pectinacea L. Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  HSC97053  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  JEPS110298  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-9-11 13338 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC25501  Eragrostis pilosa var. pilosa L. Ahart 1977-8-14 1552 Butte On the sides of a slough. Peter Ahart Ranch, Honcut. 50 Comment
  UCD65667  Eragrostis pilosa var. pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Comment
  UCD65674  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC35049  Eremogone cliftonii R. Schlising; R. Banchero 1981-6-29 4125 Butte NE part of county, 0.8 mi SW of Ramsey Bar on Little Kimshew Creek. Roadside. 1463 Comment
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Jul 8 2014
  CHSC91477  Eremogone cliftonii L. P. Janeway 2005-6-26 8436 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
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Jul 8 2014
  CHSC76338  Eremogone congesta var. congesta L. P. Janeway; B. Castro 1999-8-1 6511 Butte Between Philbrook Lake Road and High Lakes Road, 0.15 mi east of their junction. 1682 Comment
  CHSC26700  Ericameria bloomeri M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1492 Butte On both sides of Scott Johns Rd, ca. 2 mi s of its jct with Old Humboldt Rd, se of Jonesville. 1981 Comment
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  CHSC38340  Erigeron canadensis Vernon Oswald 1983-9-10 1038 Butte Upper Bidwell Park, Chico, about 300 ft w of Day Camp. 91 Comment
  UC725636  Erigeron foliosus var. hartwegii A. A. Heller 1942-6-5 16499 Butte about half way between the junction of the Middle Fork and the West Branch (on the Feather River Highway) Comment
  CAS-BOT-BC300686  Erigeron glacialis var. glacialis V. Oswald; L. Ahart 1988-7-26 3622 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  LA203585  Erigeron inornatus E. B. Copeland; 1930-8-6 490 Butte Jonesville 1550.0 Comment
  SEINET10971237  Erigeron inornatus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4245 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC48149  Erigeron inornatus var. inornatus Vernon Oswald; Lowell Ahart 1987-7-1 3050 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the west side of Scotts John Creek. 1828 Comment
  SEINET10474628  Erigeron lassenianus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 a Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  CHSC34042  Erigeron petrophilus var. sierrensis L. Ahart 1981-7-7 2932 Butte On a large hillside s of the rd, ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC72437  Erigeron petrophilus var. sierrensis L. P. Janeway 1996-8-20 5071 Butte Coyote Gap; along spur Road 23N72Y 300 ft southwest of the Gap. 1280 Comment
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Aug 22 2008
  CHSC113812  Erigeron philadelphicus Lowell Ahart 2013-4-20 18554 Butte On the west side of Wilson Creek, about 1/4 mile southwest of the barn, about 1/4 mile west of the Honcut Cemetery, about 3 miles (air) northeast of Honcut. 42 Comment
  CHSC56750  Erigeron philadelphicus J. D. Jokerst 1980-4-10 Butte Butte Creek canyon; Humbug Road 0.2 mi northeast of its junction with Honey Run Road. Comment
  JEPS120723  Eriochloa acuminata var. acuminata Lowell Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  LA205650  Eriodictyon californicum A. A. Heller; 1915-4-20 sn Butte 7 mi. below Centerville in the Sierra foothills 76 Comment
  CHSC38611  Eriogonum luteolum var. luteolum Vernon Oswald 1983-8-2 947 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  SEINET10904472  Eriogonum luteolum var. luteolum Mary Susan Taylor 1981-7-10 Taylor 4060 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC11924  Eriogonum marifolium var. marifolium E. B. Copeland 1930-7-12 410 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC261716  Eriogonum nudum var. oblongifolium Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC52111  Eriogonum nudum var. pubiflorum Steven Triano 1988-9-18 255 Butte Dry, rocky roadside along Hwy. 32 ca 7.2 mi e of its jct. with Hwy. 99. 463 Comment
  CHSC31772  Eriogonum roseum Lowell Ahart 1974-9-30 639 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  UC1562280  Eriogonum roseum Lowell Ahart 1990-8-15 2923 Butte about 1/2 mi nw Enterprise Bridge (below the high water line of Lake Oroville, e of the Enterprise Boat Launch Area); Lake Oroville 274 Comment
  UC1594624  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below the high water line of Lake Oroville, about 3/4 mi sw of Rocky Point); Lake Oroville 243 Comment
  CAS-BOT-BC253051  Eriogonum roseum Lowell Ahart 1989-7-4 6366 Butte On and around graves in the Cementery about 1/2 mile south of Oregon Gulch Road about 1 mile west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  OBI69159  Eriogonum roseum Kari Fisher 2000-10-7 9 Butte Lindo Channel, 100 ft from E First St 82 Comment
  CHSC11922  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville. Ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC34044  Eriogonum umbellatum var. ahartii L. Ahart 1981-7-7 2929 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC41366  Eriogonum umbellatum var. ahartii R. A. Schlising 1981-7-11 4136 Butte NE part of county, serpentine outcrop along Coyote Gap Road, ca. 0.5 mi S of Coyote Gap. 1219 Comment
  CHSC51893  Eriogonum umbellatum var. ahartii L. P. Janeway 1988-7-2 2966 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  CHSC92286  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8516 Butte Northern High Sierra Nevada. Plumas National Forest; open serpentine slope/knob 0.5 km south of the Paradise Lake dam; east side of Little Butte Creek. 756 Comment
  RSA0114874  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; Magalia Serpentine (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  CHSC37367  Eriogonum umbellatum var. nevadense R. A. Schlising 1982-8-1 4365 Butte E of Stirling City at white basalt Table Mountain; N end of Table Mt. 1859 Comment
  POM193385  Eriogonum ursinum E. B. Copeland 1930-7-6 s.n. Butte Jonesville. 2050 Comment
  CHSC12920  Eriogonum vimineum K. R. Stern 1974-6-30 5777 Butte At roadside, 2.5 mi s of intersection of Hwy 32 and Butte Meadows turnoff, ca. 30 mi n of Chico. Comment
  CHSC45482  Eriogonum vimineum Lowell Ahart 1981-8-11 3026 Butte Growing on dry gravel bars along North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC262341  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte Along Feather River about 1 mi. west of Oroville 45 Comment
  CHSC45950  Eriogonum wrightii var. trachygonum Lowell Ahart 1974-9-7 626 Butte On a gravel bar along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CDA4964  Eriophyllum lanatum var. achilleoides T. C. Fuller 1958-7-7 1909 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 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-BC308152  Eriophyllum lanatum var. grandiflorum A. A. Heller 1912-5-23 10748 Butte Table Mountain Olive Ranch north of Oroville Comment
  CAS-BOT-BC308153  Eriophyllum lanatum var. grandiflorum A. A. Heller; H. E. Brown 1902-5-7 5483 Butte Berry Canyon near Clear Creek Comment
  CHSC77708  Eriophyllum lanatum var. grandiflorum Tim Stofer 1997-4-16 17 Butte This plant was located all along the trail 50 ft. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  POM193095  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  UC1224621  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte along road to Cohasset n of Chico Comment
  UC201314  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 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
  UC867334  Erodium botrys A. A. Heller 1915-3-24 11777 Butte 5 mi s Pentz (near Dry Creek) 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
  SEINET10495115  Erodium moschatum Mary Susan Taylor 1973-1 Taylor 52 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCD18878  Eryngium castrense Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 186 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072. Comment
  CHSC23159  Erysimum capitatum var. capitatum Carol C. Getzinger 1964-5-2 65 Butte Route 32, 10.9 miles north from junction with Highway 99 in Chico. 609 Comment
  CHSC25361  Erysimum capitatum var. capitatum Marc P. Hayes 1977-4-22 5 Butte Ca. .8 km sw of Pulga, 110 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 490 Comment
  CHSC29285  Erythranthe arvensis R. A. Schlising 1980-4-14 3563 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC42224  Erythranthe bicolor S. C. Henderson 1986-4-15 1 Butte Ca. 50 m s of Butte Creek and 0.1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC44825  Erythranthe bicolor R. Banchero 1980-4-26 138 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, ca 1.4 mi E of the Hwy. 609 Comment
  CHSC1759  Erythranthe cardinalis R. M. Staley 1953-7-13 Butte Butte Creek. Comment
  CHSC78396  Erythranthe cardinalis Lowell Ahart 2000-7-18 8599 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC49002  Erythranthe filicifolia Vernon Oswald 1986-4-26 1981 Butte Along the Western Pacific RR between Pulga and Poe Dam. 438 Comment
  CAS-BOT-BC153864  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  SEINET8405463  Erythranthe glaucescens A. A. Heller 1926-4-26 13932 Butte near the Neale grade about 5 miles from Paradise; Upper Sonoran Life Zone. Comment
  CHSC98995  Erythranthe guttata Lowell Ahart 2008-5-21 14774 Butte Damp to 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
  CHSC42716  Erythranthe microphylla Lowell Ahart 1987-6-9 5735 Butte On a sand bar on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
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Jun 25 2013
  CHSC90170  Erythranthe microphylla Jose Romero 1983-4-20 2 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  CHSC49007  Erythranthe primuloides Vernon Oswald 1983-7-6 823 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  CHSC2265  Erythronium multiscapideum M. Roberson 1956-3-19 Butte SW of Paradise along Skyway. 426 Comment
  CHSC32640  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3462 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC32742  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-10 3526 Butte S side of Private rd, ca. 1/8 mi e of its jct with Ponderosa Way (Rim Rd), ca. 4 mi n of Jarbo Gap on Hwy 70, ca. 19 air mi n of Oroville. 914 Comment
  JEPS117217  Eschscholzia caespitosa Lowell Ahart 2010-5-16 16696 Butte Basalt cliffs about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CAS-BOT-BC402968  Eschscholzia californica A. A. Heller 1914-4-3 s.n. Butte Hills 8 miles north of Oroville Comment
  CHSC112099  Eschscholzia californica Lowell Ahart 2012-6-21 18220 Butte On the south side of Big Chico Creek, about 5 yards east of the Freewy, Lower Bidwell Park, Chico. 62 Comment
  CHSC31777  Eschscholzia californica L. Ahart 1975-5-12 777 Butte Peter Ahart Ranch, Honcut. On dredger pils along North Honcut Creek. 45 Comment
  CHSC11364  Eschscholzia lobbii Lowell Ahart 1971-4-13 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC85512  Eschscholzia lobbii Mrs. R. M. Austin Apr. 1899 93 Butte near Chico Comment
  CAS-BOT-BC419508  Eschscholzia lobbii Lowell Ahart 1980-4-30 2129 Butte Along Swedes Flat Road, near Bangor 320 Comment
  RSA144838  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  JEPS95142  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Hocut Creek) 60 Comment
  CHSC31589  Euthamia occidentalis L. Ahart 1977-9-20 1571 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC37364  Euthamia occidentalis R. A. Schlising 1981-9-20 4198 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. In ditch. Comment
  CHSC106593  Festuca elmeri B. Castro; L. P. Janeway 2001-3-17 1267 Butte Along USFS Rd 23N28, about halfway between Coyote Gap and Big Bar Mtn. 1249 Comment
  CHSC49548  Festuca occidentalis Vernon Oswald 1983-6-22 730 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  UC1609518  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10822121  Festuca subulata Lowell Ahart 2008-6-2 Ahart 14807 Butte T19N, R6E, southwest 1/4 Section 4. On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 671 Comment
  UCD80548  Festuca subuliflora CNPS SN Foothill Team 2006-6-6 Survey Butte BLM, Parcel NE of Paradise. Comment
  SEINET10475088  Filago gallica Mary Susan Taylor 1980-5-27 Taylor 2681 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC1562343  Floerkea proserpinacoides Vernon Oswald and Lowell Ahart 1990-7-5 4352 Butte 4 mi e of Jonesville (Headwaters of Willow Creek, 0.7 (odometer) w of Humbug Road, along a logging road just s of Cold Springs near Humbug Summit); Headwaters of Willow Creek 1950 Comment
  CHSC98910  Foeniculum vulgare L. P. Janeway 2007-12-11 9222 Butte Northern Sierra Nevada Foothills. Southeast side Feather River between Table Mountain Blvd and Fish Barrier Dam. 52 Comment
  CHSC12117  Fragaria vesca M. F. Smith 1972-4-22 6 Butte On Madrone Meadows Road two (2) miles from turn off at Lumpkin Road 1/2 mile west of Feather Falls Community. 914 Comment
  CHSC1545  Fragaria vesca R. Carter 1964-6-12 115 Butte About 3/4 mi. W of Forbstown on Forbstown Rd. on N side of road. 914 Comment
  SEINET10483092  Fragaria virginiana var. platypetala Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4190 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CHSC1531  Frangula rubra subsp. obtusissima A. Koopman 1929-5-15 Butte Cohasset canyon. Comment
  CHSC109574  Frasera albicaulis var. nitida L. P. Janeway 2012-6-7 10863 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
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 Comment
  CAS-BOT-BC223474  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  JEPS108969  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 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
  JEPS120065  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS119568  Fritillaria affinis Lowell Ahart 2012-2-22 17747 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC88649  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 296 Butte Plumas National Forest. On Woodleaf Road. 853 Comment
  SEINET10469654  Fritillaria eastwoodiae Mary Susan Taylor 1979-3-20 Taylor 1947 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC124014  Fritillaria eximia Mrs. J. H. Morrison 1932-3-1 s.n. Butte On the Pence grade, east of Paradise Comment
  SEINET10500609  Galium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5523 Butte Along Rim Road (Ponderosa Way) N. of Jarbo Gap off Hwy 70, ca. 23 air mi NE of Oroville. Comment
  CHSC1613  Galium aparine E. Crouch 1929-4-18 Butte Bidwell Park. 76 Comment
  CHSC61007  Galium aparine Lowell Ahart 1993-6-20 6988 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  POM196048  Galium bolanderi H. F. Copeland 1928-8-18 1135 Butte Neighborhood of Jonesville. 1524 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
  CHSC86597  Galium divaricatum L. P. Janeway 2003-5-7 7779 A Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  JEPS98587  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  UC1523186  Galium porrigens var. tenue M. S. Taylor and L. Hanson 1981-3-16 3406 Butte e side Truex Rd ca 1/2 mi s jct. with Hwy 70 (ca 7 mi n of Oroville); Cherokee Quad. 304 Comment
  CHSC30896  Galium sparsiflorum subsp. glabrius M. S. Taylor 1980-9-12 3332 Butte W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk W of the hwy on dirt road. 975 Comment
  POM367830  Galium trifidum H. F. Copeland 1930-07 1393 Butte Jonesville. Comment
  POM193333  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville. 1500 Comment
  UC392192  Galium triflorum E. B. Copeland July 1929 Butte Jonesville 1550 Comment
  JEPS98564  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte 5 air miles SW of Oroville (margin of the Thermalito Afterbay, W side of the access road to the boat ramp, W side of Larkin Road) 42 Comment
  CHSC6607  Gardenia jasminoides M. MacArthur 1968-6-17 294 Butte SE yard of Building U on the Chico State College Campus. 60 Comment
  CHSC23138  Garrya fremontii M. S. Taylor 1976-2-25 1005 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CDA2175  Gastridium phleoides L. Ahart 2003-6-2 10295 Butte Peter Ahart Ranch, about 12 miles SE of Oroville; about 1 1/2 miles N and 2 miles E of Honcut. Comment
  SEINET10935022  Gastridium phleoides Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4063 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
  UCD103639  Gayophytum diffusum subsp. parviflorum Cameron Blake; Jane Turner 1962-6-18 SK and F 998 Butte Mono Hot Springs. 1981 Comment
  CHSC36709  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32, on roadside fill. Comment
  UC600544  Gayophytum humile H. F. Copeland 1932-7-24 Butte Butte Creek Canyon Jonesville (w wall, near headwaters) Comment
  JEPS121941  Gayophytum racemosum Lowell Ahart 2014-7-7 19602 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 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
  CHSC101670  Geranium carolinianum Lowell Ahart 2009-4-26 15649 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC109068  Geranium carolinianum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17905 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC26604  Geranium molle T. S. Byler 1976-4-20 7 Butte Ca. 100 yds. S of Skyway 5.0 mi. E of California Highway 99-Skyway junction. 228 Comment
  CHSC7096  Geranium molle R. Lewis 1969-4-2 19 Butte At end of paved road. Bidwell park. On shaded s facing slope. 70 Comment
  SBBG128083  Geranium purpureum L. Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, ca. 1 mi SW of the Ponderosa Dam, ca. 2.25 mi NW of Forbestown 670 Comment
  RSA550616  Gilia capitata subsp. mediomontana C. R. Quick 1951-6-6 51 -90 Butte N of Soda Springs on Big Chico Creek Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC4012  Gilia capitata subsp. pedemontana D. B. Joley 1967-4-21 26 Butte Ca. 5 feet from Humbug Rd. and ca. 2.2 miles e of Skyway and Humbug Rd. corner, Chico. 60 Comment
  UC879807  Gilia capitata subsp. pedemontana Ira W. Clokey 13384 a Butte near Chico (at the Hooker Oak); near Chico, at the Hooker Oak Comment
  CHSC38593  Gilia tricolor Vernon Oswald 1983-3-9 145 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 213 Comment
  HSC23409  Gilia tricolor Marsha Caunt 1971-3-20 1 Butte .5 mi. NE of Diversion Dam on N cliff overlooking Big Chico Creek, Salmon Hole 76 Comment
  UC1537502  Gilia tricolor subsp. diffusa Gordon H. True Jr. 1936-3-27 384 Butte near West Butte (canyon on n side of Marysville Buttes); n side Marysville Buttes, near West Butte 76 Comment
  CHSC94051  Githopsis pulchella subsp. campestris R. D. Fischer 2005-5-18 725 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail, canyon facing. 426 Comment
  CHSC101128  Githopsis specularioides Lowell Ahart 2009-4-22 15572 Butte On the 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
  CHSC40402  Githopsis specularioides Lowell Ahart 1985-4-21 4881 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC67356  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2217 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  JEPS122144  Githopsis specularioides Lowell Ahart 2014-5-2 19434 Butte Along the trail north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10464755  Githopsis specularioides Lowell Ahart 1985-4-21 Ahart 4881 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  SEINET12331825  Githopsis specularioides Unknown 1985-1 4967 Butte W of Lunt Road, about 0.5 mi N of the Intersection of LuntRoad and Highway 70, N of Yankee Hill, 503 Comment
  UC1563258  Glinus lotoides unknown 1990-10-5 6631 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
  CAS-BOT-BC302474  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CHSC69038  Gnaphalium palustre Lowell Ahart 1997-8-1 7798 Butte Along the edge of the dirt road and north of the camps along Little Kimshew Creek, about 1/4 mile north of the County Road, east of Bald Mountain, about 8 miles (air) northeast of Stirling City. 1219 Comment
  JEPS87529  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  UC478463  Gnaphalium palustre E. B. Copeland 1931-7-18 694 Butte in places along Butte Creek; Jonesville Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  SEINET10473780  Grindelia camporum Mary Susan Taylor 1975-6-30 Taylor 811 Butte E side of Cohasset Hwy, ca. 2 mi N of Chico; Valley Grassland. 244 Comment
  CHSC46860  Grindelia camporum var. camporum Vernon Oswald 1989-9-6 3980 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Between the ranch road and Little Dry Creek, ca. 0.4 mi n of Gridley-Colusa Hwy. 18 Comment
  UC1586558  Guillenia lasiophylla Lowell Ahart 1991-5-8 6650 Butte about 1.5 mi n and 2.25 mi e Honcut (about 12 mi se of Oroville, Peter Ahart Ranch) 60 Comment
  RSA4125  Hackelia californica E. B. Copeland 1930-6-29 449 Butte Jonesville. 1550 Comment
  CHSC91450  Hainardia cylindrica Lowell Ahart 2005-6-12 12129 Butte Pasture field, on the north side of Evans Reimer Road, about one mile east of Pennington Road, about 4 miles (air) southwest of Gridley. 18 Comment
  UCD20439  Hamamelis mollis John Gross 1982-12-27 HN 144 Butte Butte County, at Lake Oroville, beside Berry Creek. Comment
  CHSC100808  Hastingsia alba R. A. Schlising 1980-7-8 3864 Butte Several miles NE of Butte Meadows, just north of Butte Creek and west of Cherry Hill Campground. 1402 Comment
  CHSC86858  Hedera helix L. P. Janeway; Gavin Blosser 2003-9-3 7972 Butte Northern High Sierra Nevada. Along southwest edge of Ponderosa Reservoir 185 m south of Ponderosa Dam (South Fork Feather River). Around disintegrating structure. 299 Comment
  CHSC30790  Hedypnois cretica M. S. Taylor; L. Ahart 1979-5-6 2005 Butte Peter Ahart Ranch, Honcut. 15 Comment
  CHSC31599  Hedypnois cretica L. Ahart 1975-5-12 756 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA516592  Hedypnois cretica R. C. Bacigalupi, G. Thomas Robbins, Francia Chisaki 1956-4-19 5603 Butte Roadside at bridgehead across N Fork of Feather River, Nelson Bar road. 198 Comment
  SEINET10487247  Hedysarum boreale Mary Susan Taylor 1981-5-22 Taylor 3799 Butte Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, about 5 air mi E of Magalia. 1006 Comment
  SEINET10508799  Heleochloa schoenoides Mary Susan Taylor 1978-9-8 Taylor 1882 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC95076  Helianthella californica var. nevadensis L. P. Janeway 2006-6-25 8700 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC47656  Helianthus bolanderi Lowell Ahart 1989-9-17 6387 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC35086  Heliotropium europaeum R. A. Schlising 1981-9-26 4207 Butte W of Chico at Sacramento River, in Bidwell River State Park. Comment
  SEINET10902879  Heliotropium europaeum Mary Susan Taylor 1974-10-11 Taylor 329 A Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 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
  CHSC61297  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte About 2 1/2 miles north-east of Bald Mountain, about 6 1/2 (air) miles north-east of Stirling City. 1584 Comment
  UC1609221  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  CAS-BOT-BC314992  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi. W of 23N15 ca. 1.5 mi. S of its jct. with Four Trees Road, ca. 2 air mi. W of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CAS-BOT-BC309787  Hemizonia congesta subsp. luzulifolia Lowell Ahart 1982-9-9 3768 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC310158  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville 76 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC115298  Hesperocyparis macnabiana Lowell Ahart 2015-4-30 20117 Butte On dry bare serpentine soil, about 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Chaparral. 890 Comment
  HSC98211  Hesperocyparis macnabiana M. S. Taylor, J. D. Jokerst 1980-2-23 2317 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  CHSC78153  Hesperolinon californicum Lowell Ahart 2000-5-17 8368 Butte Near the southeast margin of the Thermalito Afterbay, west of the poor dirt road, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. 42 Comment
  SEINET10493820  Hesperolinon micranthum Lowell Ahart 1983-8-16 Ahart 4286 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  UC1100978  Heteranthera dubia Herbert L. Mason and Verne Grant 1946-8-14 13041 Butte Butte Sink Comment
  CDA13833  Heteranthera limosa G. F. Hrusa, T. D. Wilfred 1996-9-5 13561 Butte Butte Basin; White's Drain at E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  SEINET10460723  Heterocodon rariflorum Mary Susan Taylor, James D. Jokerst 1980-4-27 Taylor 2548 Butte About 1 mile south of Nimshew, about 0.25 mile east of Nimshew road. T23N R3E NE 1/4 Sec. 27 Paradise Quad. 610 Comment
  SEINET12331810  Heterocodon rariflorum L. Ahart, Ahart, P. 1984-1 4727 Butte About 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE 1500 Comment
  CAS-BOT-BC143637  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  SEINET5733943 Image available Heteromeles arbutifolia Lowell Ahart 1985-1 5092 Butte Ca. 2.5 mi. NE of Forbestown. 200 yds. S of the dirt road to the Forbestown Res. Yellow Pine Forest.; Forbestown 899 Comment
  JEPS108135  Heterotheca grandiflora Lowell Ahart 2005-11-20 12491 Butte W side of the Poe Power house, E of the North Fork of the Feather River 275 Comment
  CHSC38040  Hirschfeldia incana R. E. Preston 1982-12-4 370 Butte At roadside; n side of Ord Ferry Rd at jct with Seven Mile Lane, ca. 7.8 mi ssw of Chico. 36 Comment
  CAS-BOT-BC55332  Hirschfeldia incana Lowell Ahart 1984-6-10 4689 Butte Along the edge of a new subdivision road about 1 mile southeast of Hurleton, 1/12 mile east of the Oak Grove Cemetery. 500 Comment
  JEPS46114  Hoita orbicularis Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  CAS-BOT-BC280712  Holcus lanatus John Thomas Howell; Gordon H. True 1967-6-11 42562 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  CAS-BOT-BC280713  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC111726  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. Uncommon. Riparian Woodland. 62 Comment
  CHSC34145  Holcus lanatus L. Ahart 1981-9-15 3156 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC42401  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  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
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  SEINET10506845  Hordeum Mary Susan Taylor 1981-5-1 Taylor 3582 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
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  CHSC36109  Hordeum marinum subsp. gussoneanum K. Bridwell 1978-5-25 109 Butte Ca. 300 yds s of Pentz Rd, ca. 3 mi e of intersection with Hwy 99, ca. 12 mi se of Chico. 76 Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  SEINET11911372  Horkelia fusca subsp. parviflora L. Ahart, Ahart, P. 1984-1 4753 Butte By the road, about 1 1/2 mi SE of Bald Mnt, 1/4 mi E of Oak Point, about 5 mi NE of Stirling City 1500 Comment
  CHSC46590  Horkelia fusca subsp. tenella Vernon H. Oswald 1989-7-4 3838 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Edge of meadow. 1767 Comment
  CAS-BOT-BC143974  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 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
  UC398920  Horkelia tridentata subsp. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  JEPS124020  Horkelia tridentata var. tridentata Lowell Ahart 2015-6-16 20239 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CAS-BOT-BC536256  Horkelia tridentata var. tridentata A. A. Heller 1913-6-7 10793 Butte Near Stirling 1036 Comment
  CHSC64086  Hosackia crassifolia B. Castro; R. A. Schlising, L. P. Janeway 1988-7-30 285 Butte On SW-facing slope above Coon Hollow, along sides of dirt road (USFS Rd 26N74) ca. 1.6 mi NE of the creek. 1813 Comment
  CHSC38501  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1983-6-14 683 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on the edge of Chico Creek. 201 Comment
  LA47950  Hosackia oblongifolia var. oblongifolia E. B. Copeland; 1930-7-11 420 Butte Jonesville 1500.0 Comment
  CHSC46290  Hosackia stipularis var. ottleyi Vernon Oswald 1989-5-11 3765 Butte Santos Rd (from Hwy 32) on Doe Mill Ridge. 487 Comment
  CHSC28820  Hypericum anagalloides J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 412 Butte Top of North Table Mt, 100 m NW. of the intersection of Cherokee Rd and east edge of section 17. 396 Comment
  CHSC45899  Hypericum anagalloides Lowell Ahart 1974-6-24 501 Butte Peter Ahart Ranch, on the bottom of a small wash, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS121905  Hypericum anagalloides Lowell Ahart 2014-7-16 19679 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SD3069  Hypericum anagalloides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  SEINET10905163  Hypericum anagalloides Mary Susan Taylor 1975-10-4 Taylor 955 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
  CHSC4615  Hypericum concinnum R. Carter 1966-6-15 428 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd.; growing on bank above road in rather dry soil. 883 Comment
  CHSC62749  Hypericum concinnum B. Castro 1993-7-13 477 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along both sides of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  RSA458217  Hypericum concinnum M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  JEPS107575  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  CAS-BOT-BC312925  Hypochaeris glabra E. B. Copeland 1899-4-4 s.n. Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CAS-BOT-BC312929  Hypochaeris glabra Lowell Ahart 1980-4-28 2108 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10473838  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3569 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CAS-BOT-BC133554  Iris hartwegii Mrs. H. C. Cantelow 1940-5-10 s.n. Butte About 2 mi. W. of Brush Creek Ranger Station Comment
  CHSC93187  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top. 1158 Comment
  CHSC29031  Iris macrosiphon J. D. Jokerst 1980-3-28 526 Butte E of the northern most portion of North Table Mt. 365 Comment
  SEINET10469751  Iris macrosiphon Mary Susan Taylor 1978-5-6 Taylor 1577 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10971618  Iris macrosiphon Lowell Ahart 1985-3-22 Ahart 4848 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. Comment
  CHSC87550  Iris pseudacorus R. D. Fischer 2004-3-29 73 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  CAS-BOT-BC69903  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 mi. n. and 1/4 mi. e. of Honcut. 50 Comment
  CAS-BOT-BC61871  Isoetes nuttallii Lowell Ahart 1982-6-15 3563 Butte About 8 miles east of Feather Falls, about 1 1/2 miles east of Camp 18 1000 Comment
  CHSC21053  Isoetes nuttallii M. S. Taylor 1975-4-26 516 Butte On the se side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC29222  Isoetes nuttallii M. S. Taylor 1980-3-28 2404 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave, ca. 1 1/4 mi e of Hwy 99. 76 Comment
  CHSC30017  Isoetes nuttallii L. Ahart 1980-5-17 2271 Butte 1/8 mi se of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC40399  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC86594  Isoetes nuttallii L. P. Janeway 2003-5-7 7774 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  SEINET3449664  Isoetes nuttallii Unknown 2003-4-15 10094 Butte Oroville, Oroville, about 7 air miles north, northwest of Cherokee Road, North Table Mountain, south edge of Beatson Hollow, about 1.25 miles northwest of the iron gate and fence, about 80-100 ? southwest of the section corner pipe, about 1/8 miles southwest of the tall Digger Pine 290 Comment
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Sep 19 2014
  UC1586564  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1991-6-5 4641 Butte ca 1.5 air mi nw Platte Mt Lookout (between Forest Ranch and Lomo, dirt rd to Minnie-Ha-Ha Mine on Big Chico Creek on w side of Hwy 32) 853 Comment
  CAS-BOT-BC112388  Isolepis carinata Lowell Ahart 1983-6-12 4048 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, 425 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  UC1609032  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte about 6 (air) mi ne Feather Falls (w of the bridge across Fall River); Fall River, ne of Feather Falls 1036 Comment
  CHSC30020  Juncus L. Ahart 1980-6-1 2365 Butte On a seep ca. 120 m e of Kunkle Reservoir, ca. 2 mi se of Paradise. 550 Comment
  SEINET10472533  Juncus Mary Susan Taylor 1980-5-27 Taylor 2671 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC1594712  Juncus acuminatus Lowell Ahart 1992-7-23 6827 Butte about 2 mi w of Oroville Dam (near Longs Bar Monument, on n side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC96092  Juncus articulatus L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8823 A Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  CHSC7194  Juncus balticus M. I. Moore 1969-4-26 16 Butte Upper Bidwell Park, ca. 1000 yds. nw of Salmon Hole - Big Chico Creek. 106 Comment
  CHSC102179  Juncus balticus var. balticus Lowell Ahart 2009-8-12 16291 Butte On dry to damp dark soil, meadow, along small drainages, on the east side of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC50695  Juncus bufonius var. bufonius Lowell Ahart 1990-5-25 6484 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC97381  Juncus bufonius var. bufonius Paul Maslin 2006-1-1 35 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Growing on disturbed soil at edge of Chico Canyon Road. UTM: 10609754E 4410048N. 246 Comment
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  UC1609069  Juncus bufonius var. bufonius Lowell Ahart 1993-6-20 6992 Butte about 1 air mi nw of the Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); Jackass Flat, Mooreville Ridge 1158 Comment
  CHSC90947  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC47542  Juncus capitatus Lowell Ahart 1980-5-13 2264 Butte An open pasture field, 1/2 mile south-west of Kunkle Reservoir, west of the Pentz Magalia Highway, about 3 miles south of Paradise. 457 Comment
  CHSC6706  Juncus capitatus Marilyn Lee 1968-4-19 128 Butte West side of Cherokee Road ca 2 miles S. of Cherokee, 100 yards S.E. of cemetary, Table Mt. Comment
  CHSC28396  Juncus drummondii J. D. Jokerst 1979-7-21 302 Butte In damp, rocky draw. North side of Humboldt Peak. 2103 Comment
  JEPS114881  Juncus effusus subsp. effusus Lowell Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  CHSC30436  Juncus effusus subsp. pacificus L. Ahart 1980-7-29 2506 Butte Along edges of road in gutters. Lower Forbestown Rd (Ponderosa Way) ca 1/4 mi N of intersection with Robinson Mill Rd, W of Forbestown. 750 Comment
  CHSC39675  Juncus effusus subsp. pacificus Lowell Ahart 1983-6-21 4099 Butte Found along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  JEPS113832  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  RSA726658  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14301 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  RSA726664  Juncus effusus subsp. pacificus L. Ahart 2007-7-2 14248 Butte 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville. 166 Comment
  JEPS114775  Juncus ensifolius Lowell Ahart 2008-7-23 15142 Butte on the N side of the South Fork of the Feather River, about 10 yds W of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mi W of the Ponderosa Dam 258 Comment
  SEINET3450941  Juncus ensifolius Unknown 2003-6-30 10336 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  CHSC69059  Juncus howellii Lowell Ahart 1997-8-1 7761 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS113855  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 762 Comment
  RSA726662  Juncus howellii L. Ahart 2007-6-12 14079 Butte North edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  JEPS127086  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
  JEPS118349  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills 1266 Comment
  CAS-BOT-BC312663  Juncus leiospermus Lowell Ahart 1978-5-1 1692 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
  JEPS117322  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16685 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC105517  Juncus mertensianus Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC50380  Juncus mexicanus Vernon Oswald 1990-6-6 4285 Butte East terminus of Dean Rd, Paradise, in the canyon of the West Branch of the Feather River at Upper Miocene Canal. Bordering the parking area at the canal. 472 Comment
  POM219308  Juncus mexicanus H. F. Copeland 1931-6-11 1514 Butte Jonesville, Butte Creek Meadows 1829 Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC113402  Juncus orthophyllus Lowell Ahart 2014-7-2 19543 Butte On the north side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC57158  Juncus orthophyllus L. P. Janeway 1988-6-14 2778 B Butte Ewalt Camp; near meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  JEPS114979  Juncus oxymeris Lowell Ahart 2008-6-13 14817 Butte E side of a small meadow, bottom of an old gold mined area, about 150 yds W of the cemetary, about 150 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 311 Comment
  UC600813  Juncus parryi H. F. Copeland 1930-7-12 Butte above Butte Creek House; Jonesville Comment
  RSA755380  Juncus patens L. Ahart 2009-7-9 16004 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  CHSC105532  Juncus tenuis Lowell Ahart 2010-9-21 17225 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  JEPS113275  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  RSA0080124  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte About 1/4 mile east of Little Bald Rock, about 2 miles (air) northeast of Oroville. 1009 Comment
  CHSC113274  Juncus trilocularis Lowell Ahart 2014-5-21 19531 Butte Along a small drainage and the poor road, about 100 yards west from Ponderosa Way, about 1/4 mile northwest of the Ponderosa Dam. 271 Comment
  CHSC96965  Juncus trilocularis Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  HSC101162  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Hwy, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill 830 Comment
  JEPS113747  Juncus usitatus Lowell Ahart 2007-7-11 14291 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  JEPS113760  Juncus usitatus Lowell Ahart 2007-8-19 14493 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 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
  SEINET194312  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Near rd above a mi from jct w/ Oroville Rd 137 Comment
  CAS-BOT-BC235675  Keckiella breviflora var. glabrisepala James L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609 Comment
  CAS-BOT-BC235679  Keckiella breviflora var. glabrisepala Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CHSC115275  Keckiella breviflora var. glabrisepala Lowell Ahart 2015-5-5 20143 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. Raparian Woodland (destroyed). 39 Comment
  CHSC46515  Keckiella breviflora var. glabrisepala Lowell Ahart 1989-5-31 6329 Butte Along Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC1857  Keckiella corymbosa M. Underhill 1952-7-18 Butte Indian Marker for Richardson Springs. 243 Comment
  CAS-BOT-BC237822  Keckiella lemmonii Carl B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 7/10 mi. NW. of Magalia at NW. side of Magalia Reservoir 731 Comment
  CHSC37067  Keckiella lemmonii L. Ahart 1982-9-29 3841 Butte Along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi ne of Strawberry Valley. 1200 Comment
  UCR133592  Kelloggia galioides H. F. Copeland 1930-7-21 1327 Butte Jonesville 1524 Comment
  CHSC1484  Kumlienia hystricula J. Koopman 1929-3-5 Butte Centerville road. 114 Comment
  CHSC94351  Kyhosia bolanderi Lowell Ahart 2006-7-25 13064 Butte West of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC179501  Kyhosia bolanderi A. A. Heller 1914-8-7 11653 Butte meadows Butte 1219 Comment
  JEPS115280  Lactuca saligna Lowell Ahart 2008-11-4 15400 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
  CAS-BOT-BC340530  Lactuca serriola Lowell Ahart 1983-9-19 4457 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CHSC102823  Lagophylla glandulosa Lowell Ahart 2009-7-9 16002 Butte On the east side and in the center of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC84326  Lagophylla glandulosa Lowell Ahart 2003-8-3 10465 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  JEPS19943  Lagophylla glandulosa R. F. Hoover 1936-5-21 1169 Butte 7 mi n Chico Comment
  CHSC11371  Lamium amplexicaule Lowell Ahart 1962-3-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC19941  Lamium amplexicaule M. S. Taylor 1975-3-25 425 Butte Abundant in weed field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC3481  Lamium amplexicaule Roger Jaegel 1966-3-14 57 Butte Located four miles west of Chico in a young orchard along the bank of the Sacramento River near the Highway 32 bridge. Comment
  CHSC101984  Lasthenia fremontii Linda Osborne 1980-4-10 3 Butte Chico. Ca. 100 m SE of Notre Dame Blvd., 200 m NE of Skyway. Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC46949  Lasthenia fremontii Lowell Ahart 1983-5-12 3974 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  UC472213  Lasthenia fremontii Francis Ramaley 1917-5-6 11216 Butte near Chico Comment
  CAS-BOT-BC354119  Lasthenia fremontii A. A. Heller; H. E. Brown 1902-5-2 5441 Butte Near Butte City. Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  JEPS98423  Lathyrus angulatus Lowell Ahart 2000-5-13 8351 Butte 5 air miles SW of Oroville (near 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
  CHSC63248  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte On the bottom of a swale, north of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  CHSC23679  Lathyrus nevadensis M. S. Taylor 1976-4-27 1091 Butte On n side of Villas Rd, ca. 1/2 mi e of junc of Villas Rd and Cohasset Hwy, Cohasset. 762 Comment
  UC217238  Lathyrus nevadensis var. nevadensis H. M. Hall 1917-5-11 10293 Butte Keefer Mill, on Honey Run grade Keefer Ridge 731 Comment
  CHSC31837  Lathyrus sulphureus L. Ahart 1977-4-16 1308 Butte Peter Ahart Ranch, Honcut. Along the banks and sides of North Honcut Creek. 50 Comment
  SEINET10452337  Lathyrus sulphureus Lowell Ahart 1983-5-28 Ahart 4025 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UCD106543  Lathyrus vestitus var. ochropetalus R. R. Kehlor 1951-4-14 26 Butte 6 1/4 miles east of Oroville on Mt. Ida Road. Comment
  CHSC10618  Layia fremontii Lowell Ahart 1970-4-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM284970  Layia fremontii Lyman Benson 1935-3-27 6369 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
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May 24 2013
  CHSC110402  Leersia oryzoides Lowell Ahart 2012-9-28 18459 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC11985  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville. In swamp. 1550 Comment
  CHSC44373  Leontodon saxatilis subsp. longirostris Lowell Ahart 1988-6-23 6064 Butte Meadow, north of Forbestown Road, about 1 1/2 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  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
  CHSC20877  Lepechinia calycina Robert A. Schlising 1963-6-7 2613 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC750  Lepechinia calycina M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  UCSC010731  Lepechinia calycina Brett Hall, Annee Hall 1991-1 BH 115 .91 Butte Between Chico and Forest Ranch Comment
  CAS-BOT-BC89873  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  SEINET11991676  Lepidium nitidum Unknown 1984-1 9 Butte ca 12 mi NNW of Chico, ca 4 mi N of jct of Meridian Rd & Hwy 99, along W side of Meridian Rd 61 Comment
  CAS-BOT-BC13065  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-9 5601 Butte Along Pulga Road, about 2 miles southwest of Bardees Bar along the North Fork of the Feather River. 365 Comment
  JEPS94959  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte 1.5 mi n Bridge across West Branch of Lake Oroville (w side Hwy 70, just n of Rich Gulch Rd) 396 Comment
  CAS-BOT-BC273949  Leptochloa fusca subsp. fascicularis Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC273950  Leptochloa fusca subsp. fascicularis Herbert L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC83005  Leptochloa fusca subsp. fascicularis Lowell Ahart 2002-9-7 9929 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC29379  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3686 Butte 4.6 mi s of Butte/Tehama County line on Hwy 32; roadside. Comment
  CHSC81285  Leptosiphon filipes J. Trizzino 2001-4-22 39 Butte South side of Humboldt Road, ca. 0.5 mi east of intersection with Bruce Road. 112 Comment
  JEPS13267  Lessingia nana Rimo Bacigalupi with G. T. Robbins 1955-7-15 5304 Butte about 4 mi above the Hooker Oak (just above Big Chico Creek); just above Big Chico Creek 121 Comment
  CHSC102843  Lessingia nemaclada Lowell Ahart 2009-6-30 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC20969  Lessingia nemaclada M. S. Taylor 1975-9-19 917 Butte Ca. 1/2 mi n of Magalia. 609 Comment
  CHSC38121  Lessingia nemaclada R. L. Ondricek-Fallscheer 1982-10-30 160 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  CHSC62430  Lessingia nemaclada L. P. Janeway 1993-9-3 4580 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  JEPS120560  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  SEINET10839206  Lessingia nemaclada Mary Susan Taylor 1979-8-4 Taylor 2171 A Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  RSA169409  Lessingia virgata John T. Howell 1959-9-19 34612 Butte 5 miles west of Oroville 46 Comment
  CHSC45654  Leucanthemum vulgare Vernon Oswald 1987-6-12 2992 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  POM196087  Leucophysalis nana H. F. Copeland 1929-6-9 1228 Butte Jonesville. 1524 Comment
  POM253222  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte Treeless summit of Table Mtn. Comment
  RSA767487  Lilaea scilloides Lowell Ahart 2010-6-9 16789 Butte Bottom of 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 5.5 air miles northeast of Oroville. 399 Comment
  CAS-BOT-BC130566  Lilium humboldtii A. A. Heller 1928-6-20 14627 Butte Paradise, east of the Sawmill on the Neal road Comment
  POM109709  Lilium humboldtii subsp. humboldtii C. C. Bruce 1897-06 s.n. Butte [no locality information provided] Comment
  UC600463  Lilium kelleyanum E. B. Copeland Jul 1929 Butte Butte Creek; Jonesville 1550 Comment
Read comments
Dec 13 2006
  CAS-BOT-BC509481  Lilium kelleyanum Clarence R. Quick 1952-7-1 52 -110 Butte Mill Creek Road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  CHSC46241  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-26 1085 Butte Ca 7.5 km (air) ese of Jonesville (where Humboldt Road crosses Jones Creek). Ca. 0.45 km e of meadow where Humbug Summit Road crosses Willow Creek. 1890 Comment
  UC1334270  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer and Ira L. Wiggins 1940-7-6 10 Butte about 0.5 mi w Chaparral 1554 Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  SEINET6670254  Limnanthes alba M. Plotkin 1997-3-21 12 b Butte Northeast of Chico Municipal Airport, south of dirt road diverging east from Hicks Road where Hicks Road makes a sharpturn west, 100 feet east of airport fence 91 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
  CHSC88571  Limnanthes alba subsp. alba T. W. Henrich 2004-4-15 Butte In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  JEPS106505  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte Chico. Meghdadi Property in SE Chico; about 0.5 km N of Doe Mill Road, about 0.5 km E of S end of Potter Road, and 0.25 km W of old stone fence. Comment
  CHSC42483  Limnanthes alba subsp. versicolor Lowell Ahart 1987-5-12 5632 a Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC52406  Limnanthes douglasii Jose Romero 1983-4-20 17 Butte Oroville Wildlife Area. Jct. of Larkin and Timothy Rds., 4 mi SW of Oroville. 45 Comment
  CHSC3534  Limnanthes douglasii subsp. nivea John Francis 1966-3-28 85 Butte Table Mt., beside creek. Comment
  CHSC12114  Limnanthes douglasii subsp. rosea M. F. Smith 1972-3-7 3 Butte On Skyway about 500 ft. east of Notre Dame Ave. 60 Comment
  CAS-BOT-BC45930  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 miles north of Oroville Comment
  UC971798  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1254 Butte Table Mt. Oroville (summit) Comment
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  CHSC3960  Linanthus dichotomus E. P. Parreno 1967-3-30 28 Butte Upper Bidwell Park Road near the Mun. Golf Course. Comment
  JEPS118329  Linanthus filipes Lowell Ahart 2011-4-28 17332 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
  UC726827  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte about 2 mi w Arch Rock Tunnel (on Feather River Highway) Comment
  UC907831  Linanthus filipes P. B. Kennedy 1929-5-4 Butte between Paradise to Chico at summit Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  UC885983  Linaria vulgaris A. A. Heller 1915-8-20 12201 Butte 8 mi n of Oroville Comment
  CHSC117420  Lindernia dubia var. anagallidea Lowell Ahart 2016-5-30 20883 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC42116  Lindernia dubia var. anagallidea Lowell Ahart 1986-11-9 5444 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC65208  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 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
  CDA13285  Linnaea borealis var. longiflora G. F. Hrusa, T. D. Wilfred 1996-7-9 13133 Butte Plumas National Forest; along Jordan Ck, at top of waterfall above confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp Comment
  SEINET13711404  Lipocarpha aristulata Lowell William Ahart, Lowell William Ahart 1999-1 8146 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  UC1562290  Lipocarpha micrantha Lowell Ahart 1990-7-4 6547 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (along McCabe Creek); , McCabe Creek 243 Comment
  UC128928  Listera convallarioides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC398906  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville 1500 Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  UC1135265  Lithocarpus densiflorus P. L. Johannsen 1936-7-29 974 Butte Haw Creek; Paynes Creek Quad. 1158 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
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 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 andRoad 19N19. 701 Comment
  CAS-BOT-BC432271  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CAS-BOT-BC438122  Lithophragma parviflorum Gladys Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CHSC3951  Lithophragma parviflorum Kathy Sommarstrom 1967-4-8 18 Butte Found 6.8 mi on Cherokee Rd, Table Mtn., 300 yds from road to the left. 335 Comment
  CHSC114946  Lithophragma parviflorum var. trifoliatum 2015-3-14 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 302 Comment
  SEINET10497329  Lithospermum californicum Mary Susan Taylor 1980-4-18 Taylor 2507 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
  CHSC33670  Lolium multiflorum L. Ahart 1981-5-24 2834 Butte Wash in one of the pasture fields on Peter Ahart Ranch, 2 mi e of Honcut. 50 Comment
  CAS-BOT-BC269075  Lolium perenne John Thomas Howell; Gordon H. True 1967-6-11 42557 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  CAS-BOT-BC269079  Lolium perenne Lowell Ahart 1980-5-10 2231 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC32603  Lomatium caruifolium var. denticulatum Don Kroessig 1979-4-15 1 Butte SE of Chico at the intersection of the Skyway and Bruce Road. 76 Comment
  UC726873  Lomatium caruifolium var. denticulatum A. A. Heller 1941-4-14 16065 Butte 4 mi. n. Biggs (along U.S. Hwy. 99E) Comment
  CHSC116706  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  POM132576  Lomatium dasycarpum subsp. tomentosum A. A. Heller, H. E. Brown 1902-5-14 5552 Butte Berry Canyon (near Clear Creek) 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
  CHSC60646  Lomatium dissectum var. multifidum Vernon H. Oswald 1993-4-12 5257 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. P 341 Comment
  UC1532355  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  RSA713002  Lomatium marginatum L. Ahart 2006-5-8 12606 Butte North of Phantom Falls ,about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles north of Oroville 384 Comment
  CHSC109524  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC98573  Lomatium marginatum var. marginatum L. P. Janeway; B. Castro 2007-5-6 8970 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
  JEPS48315  Lomatium marginatum var. marginatum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2695 Butte w side Pulga Bridge (North Fork of Feather River); North Fork of Feather River 472 Comment
  CHSC1963  Lomatium utriculatum E. Canfield 1904-4-7 Butte Hooker Oak field. 76 Comment
  SEINET10454538  Lomatium utriculatum Lowell Ahart 1985-5-15 Ahart 4976 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SEINET12121441  Lomatium utriculatum A. R. Shepard 1981-1 1 Butte ca 3.5 mi WSW of Paradise & 1000 ft E of Butte Creek 122 Comment
  RSA30430  Lonicera conjugialis A. A. Heller 1915-6-27 11046 Butte Jonesville; Sierra Nevada. 1677 Comment
  CAS-BOT-BC240683  Lonicera interrupta Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut. Near Honcut Creek 50 Comment
  SFV11725  Lonicera interrupta M. L. Vincent 1967-7-1 728 Butte Sierra Nevada Paradise. Corner De Mille Road and Harrison Road. 515 Comment
  SEINET10451957  Lotus argophyllus var. fremontii Mary Susan Taylor 1981-5-7 Taylor 3628 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  RSA712786  Lotus grandiflorus var. macranthus L. P. Janeway 1994-5-26 4653 Butte Northern High Sierra Nevada. East end of Watson Ridge, along Road 21N92 about 0.4 mi south of Road 21N24. 1227 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
  UC1609037  Lotus nevadensis Lowell Ahart 1993-7-31 7135 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  SEINET10451997  Lotus nevadensis Mary Susan Taylor 1981-5-15 Taylor 3748 Butte T22N R5E nw/ne sec 28, Berry Creek quad. Edge of landing at short spur off Chino Ridge Rd (22N28), near Last Chance Creek, ca. 4 air mi due E of Jarbo Gap on Feather River Hwy 70. Granitic soils; 2800 ft. 853 Comment
  CDA31938  Lotus nevadensis var. nevadensis L. 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. Comment
  SEINET12165110  Lotus scoparius L. Ahart, Ahart, P. 1984-1 4691 Butte ca 1miSE of Hurleton, 1/12miE of Oak Grove Cemetary, ca 10miE of Oroville 500 Comment
  RSA0118717  Ludwigia decurrens Evan Padgett 2014-9-12 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  UC726545  Lupinus A. A. Heller 1942-6-5 16497 Butte about halfway between the junction Middle Fork and West Branch of the Feather River Highway; halfway bet jct of Middle Fork and West Branch Feather River Comment
  CHSC113654  Lupinus albicaulis var. albicaulis L. P. Janeway 2014-5-29 11277 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  CHSC12112  Lupinus albifrons M. F. Smith 1972-4-30 1 Butte Abudant on Lumpkin Rd. directly across from Gold Flake Tavern, two (2) miles above Enterprise Bridge. 762 Comment
  SEINET12161685  Lupinus albifrons Unknown 1978-1 40 Butte W side of Pentz magaila hwy ca 100 ft from Pentz rd, ca 7.6 mi off hwy 99, ca 9miSE of Chico 122 Comment
  SEINET12164082  Lupinus albifrons Unknown 1984-1 5 Butte Oroville. ca 50 yds W of State Hwy. 70 .4miS of junc w/ Oroville Dam Blvd 46 Comment
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  CHSC90490  Lupinus bicolor Andrew D. Lane 1984-4-22 9 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  CDA27403  Lupinus bicolor A. C. Browne 1951-3-28 Butte Bidwell Bar. 0 Comment
  SEINET10484912  Lupinus bicolor subsp. microphyllus Rumore 1982-4-17 RUMORE 7 Butte Large population, ca 0.5 mi s of hwy 32 at intersection of forest ave. And 20 th street, se chico. Grassy foothill. Soil a rocky sand. 61 Comment
  CHSC3186  Lupinus bicolor var. tridentatus Dona Kingsford 1966-3-30 Butte Table Mountain, NE of Chico. Comment
  HSC38055  Lupinus densiflorus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2463 Butte Beside SR 191 just N of its junction with SR 70 Comment
  POM23581  Lupinus densiflorus var. densiflorus C. C. Bruce 1897-05 2033 Butte Butte Creek. Comment
  RSA31782  Lupinus densiflorus var. densiflorus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  SEINET10452081  Lupinus formosus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4076 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  SEINET10490348  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte T22n r5e ne1/4 sec 22. Pulga sw quad. Chino ridge, ca 1.2 mi. N of 22n31, ca 3 Air mi. Se of pulga. 853 Comment
  SEINET10485451  Lupinus latifolius Mary Susan Taylor 1982-8-16 Taylor 5002 Butte T24n, r4e, se1/4sw1/4, sec 1. Pulga nw quad. Corolla blue. At loop in rd Above discovery creek, ca 1 mi. N of bald mt., Ca 4 mi. Ne of sterling city. Open to sun, dry. With digitalis purpurea, ribes roezlii, gnaphalium thermale. 1585 Comment
  SEINET10452088  Lupinus latifolius var. columbianus Heidi H. Schmidt 1993-6-15 Schmidt 860 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  UC1564806  Lupinus lepidus var. sellulus V. Oswald and L. Ahart 1989-7-12 3847 Butte ca 3 mi air se Philbrook Reservoir (road between Jones Meadow and Lotts Lake) 1901 Comment
  UC726687  Lupinus microcarpus var. densiflorus A. A. Heller 1942-4-26 16437 Butte s of the Oregon City Road junction Table Mountain (Table Mountain) Comment
  CDA27536  Lupinus microcarpus var. microcarpus T. C. Fuller 1958-4-15 5005 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  SEINET8057003  Lupinus nanus M. J. Williams 1967-4-22 s.n. Butte Table Mt., Cherokee Road near Oroville 610 Comment
  RSA424768  Lupinus nanus var. apricus Aaron Liston, M. Blumler 1987-4-24 658 -6 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CAS-BOT-BC8229  Lupinus pennellianus Amos Arthur Heller 1940-6-5 15705 Butte Along the Feather River Higway between Arch Rock Tunnel and Pulga Comment
  CHSC25003  Lupinus polyphyllus var. burkei E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  CHSC30694  Lupinus stiversii M. S. Taylor 1980-5-27 2670 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC30741  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 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
  SFV11553  Lupinus succulentus M. L. Vincent 1964-4-9 546 Butte Sierra Nevada Humbug Road. 1 mile west of covered bridge. Comment
  RSA43304  Lupinus vallicola subsp. vallicola W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  CHSC52711  Luzula cascadensis L. P. Janeway 1988-7-29 3104 Butte Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). North-facing bank above the creek. 1325 Comment
  UCD142129  Luzula comosa M. Vincent 1964-4-11 566 Butte Cherokee Road, beside the Campbell ranch 1 mile from Cherokee (Oroville Rd.). Comment
  CHSC113961  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte Disturbed dry meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) wast of Philbrook Reservoir. 1664 Comment
  SBBG128104  Luzula comosa var. comosa L. Ahart 2010-9-28 17260 Butte W edge of a 10 acre meadow, ca. 50 yards E of the poor dirt rd, ca. 20 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  CHSC34819  Lychnis coronaria M. S. Taylor 1981-5-21 3785 Butte In Mayaro, ca. 2 mi ne of Pulga on Hwy 70. 487 Comment
  CHSC109786  Lycopus americanus Lowell Ahart 2012-10-20 18511 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC78386  Lythrum salicaria Lowell Ahart 2000-7-18 8598 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  NY366307  Lythrum salicaria L. Ahart 1984-8-19 4782 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles southwest of Oroville 40 Comment
  CDA5123  Lythrum salicaria L. L. Heinrichs 1965-7-5 Butte Pacific Heights Road & State Highway 70 (old Highway 40 Alt.) to Marysville, 2.5 miles south of Oroville. 0 Comment
  CHSC84026  Lythrum tribracteatum Lowell Ahart 2003-6-23 10311 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS98931  Madia citriodora Bruce G. Baldwin, Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, S side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342707  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC36529  Madia elegans L. Ahart 1982-6-4 3543 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 304 Comment
  CHSC380  Madia elegans subsp. densifolia M. Underhill; V. Holt 1929-4-21 Butte Comment
  SEINET10474802  Madia elegans subsp. densifolia Mary Susan Taylor 1979-8-4 Taylor 2172 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC50543  Madia elegans subsp. elegans Vernon Oswald 1990-7-10 4360 Butte Feather Falls Trail between the 0.5 and 1.0 mile posts, ca. 2 miles north of the town of Feather Falls. Along the trail. 609 Comment
  CAS-BOT-BC344318  Madia exigua Lowell Ahart 1987-5-9 5592 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CHSC164  Madia exigua M. Roberson 1956-6-4 Butte SW Paradise, along Skyway. 426 Comment
  CHSC39519  Madia exigua Lowell Ahart 1983-6-12 4050 Butte Along the edge of the road, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  JEPS108733  Madia gracilis Lowell Ahart 2006-6-9 12649 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  UC600743  Madia gracilis E. B. Copeland 1930-7-24 186 Butte Jonesville 1500 Comment
  CAS-BOT-BC342956  Madia gracilis Clarence R. Quick 1952-9-7 52 -317 Butte Fire trail just south of Coyote Gap (east of Pulga) Comment
  SEINET10965685  Magnolia grandiflora Mary Susan Taylor 1974-5-20 Taylor 253 Butte Chico. Comment
  CAS-BOT-BC510728  Maianthemum racemosum subsp. amplexicaule A. A. Heller 1915-6-11 11968 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC510731  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville, at the Summit 640 Comment
  CDA13327  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13173 Butte Sierra Nevada; S end of 22N89. Approx. 0.5 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC34711  Malacothrix floccifera M. S. Taylor 1979-8-4 2183 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CHSC383  Malacothrix floccifera J. Turner 1930-5-1 Butte Cherokee road. 396 Comment
  CHSC39354  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte Along the dirt road, about 1 mile east of Milsap Bar, about 25 miles north-east of Oroville. 750 Comment
  POM362394  Malacothrix floccifera L. Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown 370 Comment
  CHSC66079  Malva nicaeensis Vernon H. Oswald 1996-5-22 7626 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  JEPS119992  Malva nicaeensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17909 Butte Near the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC574  Marah fabacea var. agrestis M. Roberson 1956-4-2 Butte SW of Paradise, along Skyway 426 Comment
  RSA0028781  Marah watsonii K. M. Stocking 28 Butte 0.9 mile down from Paradise on short cut to Chico. [W of Paradise] 457 Comment
  CHSC11367  Marsilea vestita Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC24653  Marsilea vestita D. Hattem 1976-4-10 3 Butte Ca. 4.2 mi nw of Chico, ca. 250 m n of Hwy 32. 91 Comment
  RSA724939  Marsilea vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley 23 Comment
  SEINET10530355  Marsilea vestita Mary Susan Taylor 1975-10-4 Taylor 958 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
  HSC95531  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte 100 yards E of Parking lot 10, Gray Lodge State Wildlife Management Area, about 4 mi. SW of Gridley 23 Comment
  JEPS103253  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte Gridley; ; <coords cont.> SE 1/4 Sect 17; 100 yds SW of Parking Lot 10, Gray Lodge State Wildlife Management Area, 4 mi SW of Gridley 22 Comment
  CHSC38381  Matricaria discoidea Vernon Oswald 1983-3-14 176 Butte Upper Bidwell Park, Chico, on the north rim 2400 ft e of the power lines. Beside the North Rim Jeep Trail. 274 Comment
  CHSC58021  Matricaria occidentalis Vernon H. Oswald; Wes Dempsey 1992-5-20 4943 Butte South-east corner of Llano Seco. In a field bordering a marsh. 30 Comment
  SEINET12089314  Meconella californica Unknown 1978-1 5 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug and Honey Run Rds, 6.4 mi ESE of 146 Comment
  POM24523  Medicago polymorpha var. brevispina C. C. Bruce 1897-05 1847 Butte [No location information provided.] Comment
  SEINET10902002  Melica Mary Susan Taylor 1978-5-6 Taylor 1586 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC269378  Melica californica Copeland 1903-5-2 3254 Butte Chico Comment
  CHSC38829  Melica californica Vernon Oswald 1983-3-31 230 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. between Devil's Kitchen and Parking Area R (Yahi Trail to Brown's Hole) about 2.2 mi e of the power lines. 231 Comment
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile 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. 599 Comment
  CHSC50390  Melica geyeri Vernon Oswald 1990-6-1 4272 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CHSC93792  Melica harfordii Lowell Ahart 2006-5-19 12638 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CHSC6148  Melica torreyana E. Parreno 1968-4-28 80 Butte W end of Covered Bridge, Chico. Comment
  CHSC86105  Melica torreyana L. P. Janeway; John Hunt 2003-4-22 7765 Butte Northern Sierra Nevada Foothills. Peninsula on west side of Lake Oroville at Goat Ranch Campground; 2.9 km west of Bloomer Hill. 287 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CHSC753  Melissa officinalis V. Holt; M. Underhill 1952-7-21 Butte 304 Comment
  JEPS115357  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte Along streams, 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
  RSA4233  Mentzelia dispersa E. B. Copeland 1929-7-19 s.n. Butte Jonesville. Along Butte Creek. 473 Comment
  CHSC1021  Mentzelia laevicaulis R. M. Staley 1952-7-16 Butte Along Skyway. 365 Comment
  SEINET10497356  Mertensia ciliata var. stomatechoides Mary Susan Taylor 1978-7-19 Taylor 1755 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC1673  Micranthes californica R. Carter 1964-3-28 70 Butte 8 mi. E of Oroville at 6110 Woodleaf St. Rt. ca. 10 yds. W of entrance to driveway. 121 Comment
  CAS-BOT-BC428994  Micranthes fragosa A. A. Heller 1940-3-8 15507 Butte Just above the Spring House on the Neal Road to Paradise Comment
  CHSC81305  Micranthes integrifolia J. Trizzino 2001-2-22 5 Butte North side of Humboldt Road, ca 0.5 mi east of intersection with Bruce Road. 112 Comment
  CAS-BOT-BC429201  Micranthes oregana H. F. Copeland 1920-8-12 131 Butte Jonesville 1219 Comment
  CHSC25283  Micranthes oregana M. S. Taylor 1977-7-15 1406 Butte In ne corner of Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  SBBG28784  Micranthes oregana E. B. Copeland 1929-7-20 Butte Jonesville 1550 Comment
  UCD73010  Micropus californicus Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  UCSB63614  Micropus californicus var. californicus Cooley, Patrick 1990-4-7 Butte Humbolt Rd. ca. 2 mi. e of Chico, Butte Co.; Chico Quadrangle, 7.5', SW 1/4 of NE 1/4 of SW 1/4 Sect. 21, T22N, R2E 152 Comment
  CAS-BOT-BC348696  Microseris acuminata Lowell Ahart 1978-5-1 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC48186  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3294 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence. 54 Comment
  UC179687  Microseris douglasii subsp. douglasii A. A. Heller 1914-4-14 11291 Butte hills 8 mi n Oroville Comment
  HSC32597  Mimulus angustatus Steven Lagos 1974-4-20 15 Butte 2 mi. S of Cherokee Comment
  RSA435494  Mimulus aurantiacus var. grandiflorus Francis W. Pennell, A. A. Beetle 1940-6-5 25677 Butte route 24 Stony bank, red clay, along Featerh Rvier above Oroville, 10-12 mi. above 183 Comment
  SFV3372  Mimulus bicolor B. Fuller 1962-5-8 Butte Sierra Nevada Paradise. 0.5 miles west of 5330 Harrison Road. At the spring. 480 Comment
  RSA29027  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET10570207  Mimulus breweri Mary Susan Taylor 1978-7-19 Taylor 1775 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  POM252817  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico. 244 Comment
  UCD89425  Mimulus filicifolius Jason Sexton 2010-5-22 1 Butte East of Oroville, Big Bald Rock area. 932 Comment
  POM5060  Mimulus glaucescens A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  CHSC118883  Mimulus guttatus Christopher T. Ivey 2017-5-27 387 Butte Centerville Road, about 1.5 km NE of Honeyrun bridge, large wet meadow N side of road, growing among Typha latifolia, Rubus cf. armeniacus. 119 Comment
  SEINET12318321  Mimulus guttatus R. T. Retuta 1978-1 5 Butte ca 0.5 mi SE of Cherokee Rd, ca 5 mi of Oroville, North Table Mountain Comment
  UCSB63617  Mimulus guttatus Mallen, Pamela 1987-4-10 Butte on Table Mt. ca. 100 yds w of Cherokee Ed.,6.3 mi ne of Table Mt Blvd, Oroville; Cherokee Quadrangle, 15 min. T20N R2E 426 Comment
  UCD122734  Mimulus kelloggii M. Vincent 1961-3-26 20 Butte Near Feather River bridge, Nelson Bar Road, two miles east of Spence Road. 457 Comment
  CHSC44686  Mimulus moschatus R. Banchero 1980-6-12 207 Butte Along Hwy 32 ca 3.9 mi S of tis jct with Humboldt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  POM193322  Mimulus primuloides var. pilosellus E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  RSA589915  Mimulus tilingii Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7226 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  POM5144  Mimulus torreyi Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  UC103708  Mimulus torreyi D. Cleveland 1882-7-14 Butte Sutton House Comment
  UC196165  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville rd 8 mi from Chico Comment
  CHSC208  Minuartia californica P. Delaplane 1965-3-10 39 Butte In back yard of 817 Rio Chico Way, Chico. 30 Comment
  CHSC38293  Minuartia californica Vernon Oswald 1983-2-20 91 Butte Upper Bidwell Park, Chico, on the north rim at the level of the w end of Horseshoe L. 128 Comment
  CHSC4465  Minuartia californica C. Glascock 1965-3-23 347 Butte Ca. 1 mi. S of Us99E on Haille Rd., ca. 11 mi. NW of Chico. Near Butte-Tehama Co. line. Comment
  CHSC83916  Minuartia californica Lowell Ahart 2003-4-10 10054 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  RSA715728  Minuartia californica L. P. Janeway 2005-3-1 8341 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  UCD80210  Minuartia californica CNPS SN Foothill Team 2005-4-5 SNFN 0096 b Butte CDFG North Table Mountain Wildlife Area. Plot is located on top of Table Mountain between the north fork and south fork of the northernmost canyon of Table Mountain. 370 Comment
  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
  JEPS117232  Minuartia cismontana Lowell Ahart 2010-5-16 16704 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 373 Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  UC600613  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CHSC47449  Mollugo verticillata Lowell Ahart 1984-8-19 4787 Butte Growing on sand in an area where gravel is removed, north of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  SEINET10537427  Mollugo verticillata Mary Susan Taylor 1980-7-6 Taylor 3052 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  SEINET6646074 Image available Mollugo verticillata Willis H. Wheeler 1945-1 Butte Chico; U.S. Plant Introduction Garden Comment
  RSA500423  Monardella lanceolata var. lanceolata Vernon H. Oswald 1989-6-8 3801 Butte Truex Rd just n of the Hwy 70 bridge over the North Fork of the Feather River 335 Comment
  UC196294  Monardella odoratissima subsp. glauca A. A. Heller 1914-7-23 11604 Butte Edge of the forest about Chico Meadows 1219 Comment
  UCR246738  Monochoria vaginalis T. C. Fuller, J. R. Keck 1976-10-4 20166 Butte Rice Experiment Station, 3 mi north of Biggs 31 Comment
  POM101957  Montia clara C. C. Bruce 1897-06 2013 Butte Fields Comment
  SEINET10572657  Montia diffusa Mary Susan Taylor 1981-5-5 Taylor 3615 Butte T20N R6E se/se sec 11 Forbestown quad. Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi S of Feather Falls trailhead, ca. 0.5 air mi N of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  CAS-BOT-BC444886  Montia fontana Lowell Ahart 1990-4-15 6462 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  CHSC106876  Montia fontana subsp. amporitana Lowell Ahart 2011-4-28 17330 Butte In meadow east of the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC39928  Montia fontana subsp. chondrosperma M. S. Taylor; V. Oswald 1984-4-4 5384 Butte S side of Humbug Rd, ca. 6 mi NE of Honey Run Covered Bridge, ca. 10 air mi NE of Chico. 371 Comment
  CHSC93971  Montia fontana subsp. chondrosperma R. D. Fischer 2004-6-20 750 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off meadow, east side of camp and Chico Meadows. 1371 Comment
  JEPS116117  Montia parvifolia Lowell Ahart 2009-5-15 15718 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
  POM101998  Montia parvifolia C. C. Bruce 1898-05 1777 Butte [Unspecified] Comment
  CAS-BOT-BC260533  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  POM196084  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  UC1563262  Muhlenbergia mexicana unknown 1990-9-30 6610 Butte 1/8 mi ne Canyon Creek Bridge across Lake Oroville (creek bottom below high water line of lake); East Fork of Canyon Creek 243 Comment
  CHSC46343  Myosotis discolor Lowell Ahart 1989-5-28 6274 Butte Along a small stream, south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC78126  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CHSC36072  Myosotis verna R. A. Schlising; D. Burk, A. Dawson 1982-6-2 4285 Butte N of Oroville and n of Concow Reservoir just s of Flea Valley at headwaters of Concow Creek. Meadow. 1036 Comment
  UC1101487  Myriophyllum hippuroides Herbert L. Mason and Verne Grant 1946-8-14 13014 Butte Canal near big pond on Sacramento Outing Club, Butte Sink. Comment
  UCD150342  Myriophyllum sibiricum William Anderson 1964-8-22 s.n. Butte Biggs. Comment
  JEPS122197  Myriophyllum spicatum Lowell Ahart 2014-4-16 19372 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  UC1100017  Najas graminea Verne Grant and Herbert L. Mason 1946-8-15 13047 Butte Greylodge Game Refuge, near caretaker's house Greylodge Game Refuge. Comment
  UC1100014  Najas guadalupensis Herbert L. Mason, Verne Grant 1946-8-15 13053 Butte Butte Sink, Greylodge Game Refuge, Irrigation Ditch #833, near caretaker's house Butte Sink; , Greylodge Game Refuge, Irrigation Ditch #833 Comment
  CHSC27228  Nandina domestica P. Moyer 1971-11-7 56 Butte CSUC campus. Front of Admin. Bldg., w side of door entrance. 60 Comment
  CHSC82616  Narthecium californicum L. P. Janeway; B. Castro 2002-7-7 7606 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CAS-BOT-BC60371  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  RSA755315  Nasturtium officinale L. Ahart 2009-6-3 15819 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  SFV1503  Nasturtium officinale M. L. Vincent 1962-4-18 210 Butte Butte Creek Canyon near Humbug Road. 1 mile east of old covered bridge. Comment
  CHSC105179  Navarretia capillaris B. Castro; L. P. Janeway 1999-8-1 1021 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  CHSC61002  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC30951  Navarretia filicaulis L. Ahart 1980-7-4 2454 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS107911  Navarretia filicaulis Lowell Ahart 2005-7-12 12135 Butte Road cut bank, on the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  SBBG58255  Navarretia filicaulis E. B. Copeland 1932-6-24 Butte near Hog Springs, ca. 5 mi N of Chico on the Humbolt Rd Comment
  JEPS104308  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  RSA715675  Navarretia heterandra L. Ahart 2005-5-28 11815 Butte Along the ungrazed south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  UC70271  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico ((= near Cana)) 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
  CHSC30684  Navarretia intertexta M. S. Taylor; L. Ahart, R. Schlising 1980-5-31 2757 Butte Kunkle Reservoir, e side, e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  UC392180  Navarretia intertexta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  UC856827  Navarretia intertexta A. A. Heller 1914-5-11 11386 Butte 8 mi n Oroville Comment
  JEPS107909  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-7-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  CHSC20676  Navarretia leucocephala M. S. Taylor 1975-4-29 539 Butte In vernal ponds, ca. 500 yds s of Pentz Rd, ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC2375  Navarretia leucocephala R. Carter 1965-5-13 196 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CAS-BOT-BC233624  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon, near Clear Creek Comment
  SD122564  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi from junction of Lunt Rd. and Nelson-Bar Rd. Comment
  CHSC23851  Navarretia viscidula K. R. Stern 1974-7-2 5779 Butte 1.6 mi e of intersection between Richardson Springs Road and Cohasset Highway. Roadside area. 121 Comment
  JEPS18533  Nemacladus capillaris Rimo Bacigalupi with Howard Whisler 1957-7-26 6042 Butte 3.1 mi s and below Nimshew (along Humbug Road) 365 Comment
  CHSC31177  Nemophila heterophylla M. S. Taylor 1979-5-4 1994 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC33375  Nemophila heterophylla Steven Azevedo 1980-4-16 13 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC52344  Nemophila heterophylla J. D. Jokerst 1985-4-23 2263 Butte Top of North Table Mountain. N of Cherokee Rd., E edge of Beatson Hollow at the second drainage N of road. 365 Comment
  CHSC2522  Nemophila menziesii W. Fitzwater 1958-4-19 Butte Chico Canyon, Chico area. 365 Comment
  CHSC109122  Nemophila pedunculata Lowell Ahart 2012-3-23 17789 Butte On and around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC51050  Nemophila pedunculata Pauleen Broyles 1987-2-22 996 Butte The Nature Conservancy Vina Plains Preserve. E of Sheep Camp Ditch in 'safe' pasture, on a rise. Comment
  CDA953  Nerium oleander D. G. Kelch 2006-8-2 6 .352 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CAS-BOT-BC231530  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC75975  Nicotiana quadrivalvis Lowell Ahart; Vernon H. Oswald 1999-8-13 8136 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC29104  Odontostomum hartwegii M. S. Taylor 1980-4-27 2568 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  CHSC40407  Odontostomum hartwegii Lowell Ahart 1985-5-15 4980 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  SEINET12166457  Onobrychis viciifolia M. S. Taylor 1982-1 4734 Butte T23N R5E sw1/4 sw1/4 Sec 29. Pulga SW quad. end of Spur rd along Flea Valley Ridge, see comments 1067 Comment
  RSA0076586  Orobanche fasciculata Lonnie Bookbinder 1967-4-15 7 Butte Southeast of Paradise. 914 Comment
  RSA0081021  Orobanche fasciculata C. C. Bruce 1897-06 1912 Butte Unspecified. Comment
  UC1609416  Orthilia secunda Lowell Ahart 1993-7-29 7130 Butte about 1/8 mile south west of the Snow Mine, about 2 1/2 miles east of Bald Mountain, about 6 1/2 miles north-east of Stirling City 1463 Comment
  CHSC2167  Oryza sativa D. Bower 1953-9-8 Butte 4A Llano Seco. 30 Comment
  UCD23268  Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station. Comment
  CHSC93967  Osmorhiza chilensis R. D. Fischer 2004-6-20 746 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a wooded side road, east side of camp and Chico Meadows. 1371 Comment
  CHSC47852  Oxalis bowiei Vernon H. Oswald 1989-11-10 4027 Butte Table Mtn Blvd, 0.7 mi nw of Garden Drive, Thermalito. Along the edge of road at the bottom of railroad right of way. 91 Comment
  CHSC11039  Oxalis corniculata Lowell Ahart 1969-5-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  RSA690970  Oxalis laxa L. Ahart 2003-4-30 10119 Butte About 100 yards south of the Feather River on the west side of the dirt road in the Oroville Wildlife Area about 5.5 miles(air) southwest of Oroville. 40 Comment
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Dec 18 2015
  CAS-BOT-BC316886  Packera eurycephala var. lewisrosei John Thomas Howell 1967-6-22 42619 Butte Magalia 701 Comment
  CHSC48196  Packera eurycephala var. lewisrosei Vernon Oswald 1984-5-21 1198 Butte Magalia Serpentine. 707 Comment
  JEPS32708  Packera eurycephala var. lewisrosei Lewis S. Rose 1963-6-2 63067 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  CHSC39336  Panicum acuminatum Lowell Ahart 1983-6-26 4138 Butte Along the edges of the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  HSC92450  Parentucellia viscosa L. Ahart 1976-5-25 1128 Butte S side of Cox Lane, 1/10 mi. W of Palermo Honcut Hwy., 4 mi. N of Honcut, 10 mi. S of Oroville 34 Comment
  UC177006  Parvisedum pumilum Dr. E. B. Copeland 1903-5-2 3019 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  UC830990  Parvisedum pumilum A. A. Heller 1914-4-27 11329 Butte along Chico-Oroville Road on the lava plains 6 mi from Chico; Chico-Oroville Road Comment
  CDA25372  Parvisedum pumilum L. Heinricks 1967-5-1 Butte Highway 99 where it crosses the red hills south of Butte Creek, southeast of Chico. 0 Comment
  CHSC66463  Paspalum dilatatum Vernon H. Oswald; Lowell Ahart 1996-6-10 7747 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 bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  JEPS116010  Paspalum dilatatum Lowell Ahart 2009-7-3 15993 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  UCD88712  Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. Comment
  CHSC6031  Passiflora caerulea M. MacArthur 1968-6-18 220 Butte Ca. 20 ft SE Big Chico Creek on fence by headhouse entrance, Chico State College Campus. 60 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  UCR133597  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  POM15713  Pedicularis aurantiaca Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC90157  Pedicularis densiflora Patricia Causey 1979-4-20 17 Butte About 1 mi southeast of Forest Ranch; west base of Doe Mill Ridge, 5 ft east of Doe Mill Road. 731 Comment
  SFV3421  Pedicularis densiflora M. L. Vincent 1961-3-20 9 Butte Paradise. Harrison and Stearns Roads. 535 Comment
  JEPS113225  Pellaea andromedifolia Lowell Ahart 2007-5-29 13941 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeas 636 Comment
  CHSC46280  Pellaea brachyptera Vernon Oswald 1989-5-28 3786 Butte Logging road paralleling the w side of Butte Creek, 3.2 mi s of Humboldt Rd (near Butte Meadows). 1292 Comment
  SD135666  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CAS-BOT-BC67552  Pellaea mucronata Lowell Ahart 1979-4-6 s.n. Butte 3 mi. nw of Bangor, along the west side of North Honcut Creek. 100 Comment
  CHSC29102  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1980-4-27 2547 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  HSC66085  Pellaea mucronata M. S. Taylor 1980-3-19 2391 Butte Macabes Cr. Canyon 100 ft. E of Lumpkin Rd. 2.5 mi. N of jct. with Forbestown rd. 18 mi. NE of Oroville 396 Comment
  JEPS87422  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 Comment
  UC1605504  Pellaea mucronata var. mucronata T. A. Ranker and P. G. Trapp 1994-6-17 1623 Butte s of Paradise (Pence Rd, along pipeline below Kunkel Reservoir); Cherokee Quadrangle 7.5 min topo. map 395 Comment
  NY571127  Penstemon azureus var. angustissimus A. A. Heller 1915-4-20 11854 Butte Chico-Centerville road, 3 miles from Chico at the lower limit of the digger pine belt Comment
  UC885814  Penstemon azureus var. azureus A. A. Heller 1938-5-28 15117 Butte 25 mi from Oroville (on the Feather River Highway); Feather River Highway, 25 mi from Oroville Comment
  POM193324  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  CHSC91461  Penstemon heterophyllus var. heterophyllus Lowell Ahart 2005-7-12 12138 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 733 Comment
  CHSC31448  Penstemon laetus var. leptosepalus L. Ahart 1980-9-10 2641 Butte Along the edge of the rd, ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC61592  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch. Comment
  JEPS106173  Penstemon laetus var. leptosepalus Lowell Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  SD60167  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  SEINET10931299  Penstemon neotericus Mary Susan Taylor 1978-7-18 Taylor 1690 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  JEPS94326  Penstemon personatus Lowell Ahart 1997-8-1 7803 Butte about 6 air mi ne of Stirling City (about 1 1/2 mi se of Bald Mountain, on the n side of the County Road, sw of Keyser Creek) 1432 Comment
  SEINET5329274 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1554 Comment
  RSA4460  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 689 Butte Jonesville. By Butte Creek. 1500 Comment
  CHSC32691  Pentagramma triangularis M. S. Taylor 1981-3-18 3416 B Butte S side of Hwy 70 near Pulga bridge. 487 Comment
  JEPS116132  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-17 15555 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  CHSC117763  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC40218  Perideridia bacigalupii Lowell Ahart 1985-6-30 5090 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  SEINET10454544  Perideridia bacigalupii Lowell Ahart 1985-8-15 Ahart 5163 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  SEINET12121867  Perideridia bacigalupii Unknown 1985-1 5163 Butte 50 yards S of road to Forbestown Res, about 2.5 mi NE of Forbestown 884 Comment
  UC1390030  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-18 5994 Butte 6 mi e Oroville Comment
  CHSC114079  Perideridia parishii Jennifer Buck; Danielle Roach 2009-8-27 WBCCC 02 A Butte Headwaters West Branch Crow Creek, 1 mile south of Mumbo Basin, The Eddys; UTM Zone 10N, 540746E, 4558975 1883 Comment
  SEINET10454555  Perideridia parishii subsp. latifolia Mary Susan Taylor 1978-7-19 Taylor 1788 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  CDA42946  Persicaria hydropiper L. Ahart 2012-10-28 18522 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC37071  Persicaria hydropiper L. Ahart 1982-10-6 3846 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edge of North Honcut Creek. 50 Comment
  CHSC110315  Persicaria lapathifolia B. Castro 2006-8-10 1599 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western cnal siphon in Cherokee Canal. On E side of canal at dirt road crossing the canal. 35 Comment
  JEPS119936  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC419171  Persicaria maculosa Lowell Ahart 1982-10-6 3845 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC101313  Petrorhagia dubia Lowell Ahart 2009-4-22 15573 Butte West side of Guardians Trail, south side of the drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS115837  Petrorhagia dubia Lowell Ahart 2009-4-22 15573 Butte West side of Guardians Trail, south side of the drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET10935989  Phacelia cicutaria Lowell Ahart 1984-4-4 Ahart 4541 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. Foothill Woodland; 50 m. 50 Comment
  UC671701  Phacelia heterophylla subsp. virgata Lincoln Constance 1941-5-28 2829 Butte Magalia Sierra Nevada foothills, South Branch of Feather River 518 Comment
  SEINET10935994  Phacelia imbricata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4117 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
  CHSC36081  Phacelia mutabilis R. A. Schlising 1981-8-4 4188 Butte Top (n end) of Scotts John Road, 3.1 mi n of its jct with main road to Jonesville. Comment
  RSA4128  Phacelia mutabilis E. B. Copeland 1930-7-13 s.n. Butte Jonesville. 1550 Comment
  CHSC38465  Phacelia ramosissima var. ramosissima Vernon Oswald 1983-6-13 670 Butte Upper Bidwell Park, Chico., ca. 200 ft s of the footbridge at the Golf Course. 91 Comment
  UC196274  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte Canyon of Big Chico Creek 76 Comment
  CHSC48476  Phacelia tanacetifolia Vernon Oswald 1985-4-15 1710 Butte Upper Bidwell Park, Chico, on the north rim ca. 1 mi e of the power lines. 320 Comment
  CHSC56832  Phalaris aquatica J. Lund 1980-4-28 Butte Corner of Pentz Road and Pentz-Magalia Hwy, ca 15 mi south of Chico and 5 mi east of Hwy 99. 91 Comment
  CHSC71215  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte Edge of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 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
  CHSC2174  Phalaris paradoxa H. Silberman; D. Isaac 1949-5-19 Butte Grey Lodge State Game Refuge. 24 Comment
  SEINET10661955  Phalaris paradoxa Lowell Ahart 2005-5-28 Ahart 11828 Butte T21N, R3E, southwest 1/4 Section 25. On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham 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
  UCD22550  Philadelphus lewisii James I. Mallory 1970-5-26 373 Butte Little Butte Creek Canyon south of Irish Town. 426 Comment
  CHSC33856  Phleum pratense J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 849 Butte N of and adjacent to Scout Rd 1.1 mi W of its jct with Humboldt Rd in Chico Meadows. 1341 Comment
  SEINET11688461  Phleum pratense Unknown 1985-1 5156 Butte Forbestown Res., ca 50 yds S of Generator, ca 4.5 mi NE of Forbestown 351 Comment
  CHSC27708  Phlox diffusa Robert A. Schlising; Marc P. Hayes 1978-6-24 3289 Butte Extreme NE Butte County, at summit of Humbolt Peak. 2160 Comment
  POM282388  Phlox diffusa subsp. diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  SEINET7073628  Phlox speciosa A. G. Vestal 1955-5-21 s.n. Butte About 15.3 miles east of Oroville on the Forbestown Road. UTM Zone 10, 645084mE, 4373885mN. Coordinate datum: NAD27. Comment
  CHSC35096  Phlox speciosa subsp. occidentalis Robert A. Schlising; Coleta Lawler 1981-4-12 4025 Butte E of Oroville. 365 Comment
  CHSC4667  Phlox speciosa subsp. occidentalis R. Carter 1966-4-11 337 Butte Found ca. 1 mi. E of Bidwell Bar along S side of R.R. tracks, 300 yds W of R.R. bridge over S Fork. 152 Comment
  POM225865  Phlox speciosa subsp. occidentalis J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  POM299255  Phlox speciosa subsp. occidentalis C. R. Quick 1941-6-8 41 -14 Butte Big Bar Mt. Meadow Comment
  HSC38024  Phoradendron bolleanum Thomas W. Nelson, Jane Nelson 1976-5-10 2488 Butte Just E of Magalia Comment
  UCR7829  Phoradendron densum Wm. Horn Jr. 1964-7-6 640706- 3 Butte Northern Sierra Nevada Mtns., 0.5 mi north of Magalia Train Station 716 Comment
  UC465870  Phoradendron libocedri Kate E. Conger Dec. 1906 Butte Brush Creek Comment
  HSC72947  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte 100 ft. E of Pentz-Magalia Hwy., 1 mi. S of Kunkle Reservoir, 3 mi. S of Paradise 412 Comment
  CHSC31425  Phoradendron villosum L. Ahart 1980-9-10 2624 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC58961  Phyla nodiflora var. rosea Lowell Ahart 1992-7-23 6832 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  SEINET10546999  Phyla nodiflora var. rosea Mary Susan Taylor 1982-5-22 Taylor 4495 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  NY43557  Physocarpus capitatus S. Bianco 1995-10-28 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  POM90682  Physocarpus capitatus C. C. Bruce 1898-05 1812 Butte Butte Creek. Comment
  UCR188556  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CHSC32747  Pinus attenuata M. S. Taylor; L. Hanson 1981-4-16 3548 Butte Both sides of rd 21N80, ca. 1 mi nw of its jct with Zink Rd, ca. 1.5 air mi nw of Big Bald Rock, ca. 2 air mi e of Lake Madrone. 883 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  CHSC10728  Pinus sabiniana Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC86582  Piperia elongata L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7847 Butte Northern High Sierra Nevada. Along southeast edge of North Fork Feather River arm of Lake Oroville, between mouth of Berry Creek and mouth of French Creek. 280 Comment
  SEINET3449387  Piperia elongata Unknown 2003-6-30 10323 Butte Forbestown, Forbestown, about 2 miles air northwest, southeast side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  CHSC65819  Piperia michaelii Tim Devine; Wes Dempsey 1995-5-6 Butte Just east of Altantina Drive and about 0.3 mi east of Hwy 32 between Ten-mile House and Fourteen-mile House. 560 Comment
  CHSC61525  Piperia transversa Lowell Ahart 1993-6-16 6961 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air Miles south-west of Forbestown. 609 Comment
  CHSC78349  Piperia transversa Lowell Ahart 2000-7-11 8570 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC84186  Piperia transversa Lowell Ahart 2003-6-30 10328 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  CDA38821  Pistacia chinensis L. Ahart 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
  SEINET10529964  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-3-8 Taylor 2374 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10899934  Pityrogramma triangularis var. semipallida Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5514 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  SEINET10932937  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-4-5 Taylor 3497 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  UC196295  Plagiobothrys canescens A. A. Heller 1914-3-26 11226 Butte canyon of Big Chico Creek Big Chico Creek 76 Comment
  CHSC35066  Plagiobothrys fulvus var. campestris R. A. Schlising 1981-4-6 4013 Butte S of Oroville along Hwy 170; S of Baggatt Road, grassland along highway. Comment
  SEINET10497368  Plagiobothrys fulvus var. campestris Mary Susan Taylor 1978-4-14 Taylor 1568 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CAS-BOT-BC228258  Plagiobothrys hispidulus H. F. Copeland 1938-7-4 s.n. Butte Jonesville Comment
  JEPS121921  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC46766  Plagiobothrys scriptus Lowell Ahart 1977-4-9 1276 Butte Along the edges of a small swale, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET516433  Plagiobothrys scriptus Lowell Ahart 1977-1 1275 Butte Normal size plant, growing on damp to dry gravelly red soil along the edge of small swales, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC112245  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-4-20 18562 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC90480  Plagiobothrys stipitatus var. micranthus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11665 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  SEINET10499839  Plantago bigelovii Lowell Ahart 1984-4-24 Ahart 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  UC1594610  Plantago elongata Lowell Ahart 1992-3-28 6740 Butte e side Oroville Dam (on the s side of the spillway of Oroville Dam) 274 Comment
  UCD169330  Plantago elongata Lowell Ahart 2004-4-14 10741 Butte About 1 3/4 miles west of Honcut, about 1/8 mile west of the Railroad, about 100 yards west of Wyandotte Creek, in the road gutter and on the lower edge of the south side of Lower Honcut Road. 27 Comment
  CHSC24895  Plantago erecta T. A. Barrett 1976-4-15 20 Butte 2.7 km e of Chico off the Skyway. 30 Comment
  CHSC52098  Plantago erecta R. J. Goedl 1979-4-16 19 Butte Ca. 3.5 mi e of Highway 99, 20 ft s of Skyway, e of Chico. 213 Comment
  SEINET10499850  Plantago erecta Mary Susan Taylor 1980-4-6 Taylor 2450 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC38583  Plantago lanceolata Vernon Oswald 1983-5-4 428 Butte Upper Bidwell Park, Chico, beside trail on the n side of Chico Creek beneath the power lines. 91 Comment
  POM146159  Plantago lanceolata E. E. Stanford 1927-5-21 386 Butte 4 miles SE of Avery 1220 Comment
  CDA31972  Plantago major L. Ahart 2009-7-3 15990 Butte About 60 yards west of Cedar Grove parking area, Lower Bidwell Park, Chico. Comment
  HSC92461  Plantago major L. Ahart 1981-9-27 3213 Butte 1/8 mi. NE of intersection Lower Wyandotte Rd. and Upper Palermo Rd., 4 mi. NE of Palermo 73 Comment
  JEPS95936  Plantago major Lowell Ahart 1999-8-13 8173 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
  RSA81735  Plantago truncata subsp. firma Roxana S. Ferris 1952-5-16 12481 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  CDA42769  Plantago virginica L. Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  HSC95425  Plantago virginica L. Ahart 2000-5-13 8348 Butte Margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Rd., 1.25 mi. S of Oroville Airport, 5 air mi. SW of Oroville 43 Comment
  CHSC86131  Platanthera leucostachys John Dittes 2002-6-29 626 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  POM161666  Platanthera leucostachys E. B. Copeland 1929-07 s.n. Butte Jonesville. 1500 Comment
  RSA0106540  Platanus racemosa C. C. Bruce 1897-05 1824 Butte Little Chico. Comment
  CHSC39417  Platystemon californicus J. D. Jokerst. 1984-4-7 1966 Butte Table Mountain. Ca 100 meters south of the creek that flows into the south fork of Coal Creek Cayon. Comment
  CHSC40046  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte On the road to golf links near Chico. In the Quercus lobata belt Comment
  CHSC41359  Platystemon californicus R. A. Schlising; N. A. Prouty 1982-4-9 4227 Butte S of Paradise off Pentz-Magalia Highway and SE of Lime Saddle Powerhouse. Comment
  CHSC76953  Platystemon californicus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC31899  Plectritis ciliosa L. Ahart 1974-4-11 377 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33761  Plectritis ciliosa R. A. Schlising 1980-4-3 3543 Butte E of Chico and SW of Paradise along Skyway. Comment
  SEINET10872920  Plectritis congesta subsp. brachystemon Mary Susan Taylor 1980-3-1 Taylor 2335 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  JEPS124177  Plectritis macrocera Lowell Ahart 2015-3-14 19950 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC131905  Plectritis macrocera Mrs. R. M. Austin July 1896 824 Butte Colby Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  CHSC51377  Poa compressa Vernon Oswald 1990-9-11 4447 Butte Pond located ca. 1 mile south of Brush Creek. On a path on the south side of the pond. 990 Comment
  CHSC59055  Poa compressa Lowell Ahart 1992-8-2 6897 Butte Along Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  SEINET10507579  Poa compressa Lowell Ahart 1983-9-17 Ahart 4438 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC54311  Poa howellii Vernon H. Oswald; Lowell Ahart 1991-6-5 4643 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek on the west side of Hwy 32, ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. Roadside banks. 670 Comment
  CHSC61548  Poa palustris Lowell Ahart 1993-7-6 7053 A Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC56834  Poa pratensis J. Lund 1980-4-8 Butte Chico; on the east side of Arcadian ca 100 ft north of Sacramento Avenue. 76 Comment
  CAS-BOT-BC255235  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville 2000 Comment
  CHSC93505  Poa secunda subsp. secunda Lowell Ahart 2006-5-10 12615 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  JEPS115961  Poa secunda subsp. secunda Lowell Ahart 2009-4-22 15599 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
  CHSC110469  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  JEPS120577  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. Comment
  CHSC25040  Pogogyne zizyphoroides P. E. Reese 1972-4-29 10 Butte Found ca. 50 ft. from Hwy. 99 at intersection with Boyles Rd. n of Chico. 60 Comment
  CHSC67521  Pogogyne zizyphoroides James D. Jokerst; Chuck Ricard 1993-4-12 3949 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 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
  CDA25320  Polanisia dodecandra subsp. trachysperma L. Ahart 2002-9-27 9938 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CDA40270  Polemonium occidentale T. C. Fuller 1962-7-12 9205 Butte 0.2 mile east of Jonesville. 0 Comment
  CHSC45569  Polycarpon tetraphyllum John T. Howell 1974-5-3 50334 Butte Sidewalk east of Wells Fargo Bank, at the Shell Gas Station, in Gridley. 30 Comment
  CDA13254  Polygala cornuta G. F. Hrusa, T. D. Wilfred 1996-7-8 13102 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET5845272  Polygala cornuta M. J. Williams, W. Roderick 1984-5-25 84- 22 -6 Butte Near Skyline Road, between Magalia and Paradise 640 Comment
  JEPS104287  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  RSA697050  Polygonum amphibium var. emersum L. Ahart 2003-6-16 10287 Butte W side of Wickman Road, 1 mile S of Richvale West Road, 1.5 miles air SW of Richvale. 29 Comment
  CHSC46878  Polygonum aviculare Vernon Oswald 1989-9-6 3991 Butte Between the Midway and the railroad at Butte Creek, ca. 1.5 mi sse of Durham. Rancho Esquon. Common weed on hard-packed soil of a parking area on the north edge of the creek. 30 Comment
  CAS-BOT-BC109136  Polygonum bidwelliae Lowell Ahart 1979-5-29 s.n. Butte 2.5 mile southeast of Paradise. Near Kunkle Creek. 500 Comment
  UCD99860  Polygonum bidwelliae M. Vincent 1963-6-5 382 Butte Pentz road 5 miles south of Paradise. Roadside. Comment
  SEINET10937590  Polygonum bidwelliae Mary Susan Taylor 1980-5-31 Taylor 2769 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
  RSA4213  Polygonum bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  UC1561016  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte road to Butte Meadows 3.2 mi ne Highway 32 1341 Comment
  SEINET10838776  Polygonum californicum Mary Susan Taylor 1980-5-31 Taylor 2771 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
  CAS-BOT-BC414422  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville 1500 Comment
  CAS-BOT-BC414423  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville 1500 Comment
  UC1594717  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte e intersection about 1/2 mile north of Flea Valley (about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  UC203866  Polygonum douglasii subsp. douglasii A. A. Heller 1914-7-23 11603 Butte woods about Chico Meadows 1219 Comment
  JEPS113314  Polygonum douglasii subsp. spergulariiforme L. P. Janeway 2006-6-25 8694 Butte Northern High Sierra Nevada. West side of Coutolenc Road about 150 m north of Skyway; at Magalia Serpentine. Comment
  SEINET10937571  Polygonum hydropiper Lowell Ahart 1985-11-7 Ahart 5234 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  JEPS96004  Polygonum lapathifolium Vernon H. Oswald and Lowell Ahart 1996-5-27 7665 Butte U.S. Fish and Wildlife Service Parcel between 7 Mile Lane and Sacramento River (seasonal marsh on s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UC1101161  Polygonum lapathifolium Herbert L. Mason and Verne Grant 1946-8-14 13028 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CHSC61004  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC2834  Polypodium calirhiza David Prall 1965-4-16 22 Butte NW side of Humbug road 0.3 miles east of junction with Sunhill Dr. 198 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  CHSC90136  Polypodium calirhiza Jack Judkins 1983-4-16 5 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  RSA715711  Polypodium calirhiza L. Ahart 2005-1-20 11472 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  SEINET10530416  Polypodium glycyrrhiza Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3469 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CAS-BOT-BC233054  Polypogon interruptus Lowell Ahart 1982-5-28 3442 Butte E of Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 miles N and 3 miles E of Honcut 50 Comment
  CDA31992  Polypogon interruptus L. Ahart 2008-5-12 14741 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
  SEINET10508323  Polypogon interruptus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4110 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  JEPS88273  Polypogon maritimus Vernon H. Oswald and Lowell Ahart 1996-5-27 7662 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & the Sacramento R. Sacramento R. Nat'l Wildlife Refuge (s. side of levee rd. at s.w. corner of Tract 3.4, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  CHSC47632  Polypogon monspeliensis Lowell Ahart 1982-7-18 3681 Butte Along the sides and bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC47634  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte In the gutter along Lower Forbestown Road or Ponderosa Way, about 1/4 mile north of the intersection of Forbestown Road and Robinson Mill Road. 701 Comment
  CHSC82408  Polypogon monspeliensis Lowell Ahart 2002-5-7 9635 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
  CHSC28408  Polystichum imbricans subsp. curtum M. S. Taylor 1979-9-28 2202 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  POM120956  Polystichum imbricans subsp. curtum C. C. Bruce 1897-05 1865 Butte Forest- Ranch. Comment
  CHSC87877  Polystichum imbricans subsp. imbricans Lowell Ahart 2004-6-22 11117 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  JEPS110225  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House 609 Comment
  SEINET10530133  Polystichum scopulinum Mary Susan Taylor 1980-8-2 Taylor 3214 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CAS-BOT-BC102495  Populus fremontii Lowell Ahart 1980-3-13 2042 Butte 2 1/2 miles north and 3 miles east of Honcut Comment
  POM107428  Populus fremontii subsp. fremontii C. C. Bruce 1897-05 1791 Butte Little Chico. Comment
  SD61  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville, 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
  CHSC105538  Potentilla flabellifolia Lowell Ahart 2010-9-28 17252 Butte On wet humus, south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC45740  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-19 2224 Butte Along Sly Cr at crossing of rd to SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. Cyn bottom near the cr. 1097 Comment
  CHSC38645  Potentilla glandulosa subsp. glandulosa Vernon Oswald 1983-5-11 472 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  UC481573  Potentilla gracilis var. fastigiata H. F. Copeland 1931-6-11 Butte Jonesville Butte Creek Meadows, Jonesville 1828 Comment
  HSC46104  Proboscidea louisianica J. P. Smith, J. O. Sawyer 1975-7-1 8152 Butte 5 mi. W of Dayton on the Ord Ferry Rd. Comment
  CHSC66305  Proboscidea louisianica subsp. louisianica Vernon H. Oswald 1996-6-20 7834 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing on the edge of a marshy drainage on the dry bed of seasonal marsh at the NW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC31761  Proboscidea lutea L. Ahart 1973-7-19 262 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD125325  Prunella vulgaris L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC79522  Prunella vulgaris var. lanceolata G. F. Hrusa; T. D. Wilfred 1996-7-9 13117 Butte Northern California. Plumas National Forest. On Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  CHSC110110  Prunus cerasifera L. P. Janeway 2012-5-2 10815 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CHSC6045  Prunus persica M. MacArthur 1968-6-19 229 Butte Ca. 10 ft. SE of Big Chico Creek near PSA bridge, Chico State College. 60 Comment
  HSC60315  Prunus subcordata J. P. Smith, J. O. Sawyer 1973-4-14 6059 Butte Cohasset Comment
  CHSC88073  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CAS-BOT-BC357236  Pseudognaphalium microcephalum A. A. Heller 1916-9-23 12659 Butte Sierra foothills near Forest Ranch Comment
  CHSC58903  Pseudostellaria jamesiana Lowell Ahart 1992-7-21 6815 Butte Under large fir trees, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC361740  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  SEINET10475179  Psilocarphus oregonus Lowell Ahart 1983-6-6 Ahart 4033 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC113508  Psilocarphus tenellus Lowell Ahart 2014-7-10 19625 -A. Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10452195  Psoralea macrostachya Lowell Ahart 1985-6-30 Ahart 5080 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CAS-BOT-BC72550  Pteridium aquilinum T. P. Spira 1974-4-28 7 Butte along Contolene Rd, ca. 2 mi e of Paradise 609 Comment
  SEINET9625344 Image available Pteridium aquilinum var. pubescens H. F. Copeland 1932-8-18 s.n. Butte Vicinity of Jonesville, Lassen National Forest. Comment
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CHSC60976  Pterospora andromedea Lowell Ahart 1993-6-26 7026 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek's Reservoir. 1188 Comment
  CHSC31774  Pterostegia drymarioides L. Ahart 1974-3-18 322 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47637  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Near the dirt road, about 3/4 mile west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley. 30 Comment
  CHSC70803  Pycnanthemum californicum B. Castro; H. Durio, L. Gehrung 1995-7-24 591 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC115352  Pyracantha koidzumii Lowell Ahart 2015-1-27 19929 Butte On the northwest side of Larkin Road, about 200 yards south of Larkin Road Boat Launch Area, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 35 Comment
  CHSC94920  Pyracantha koidzumii L. P. Janeway 2006-10-4 8904 Butte Sacramento Valley. Oroville Wildlife Area; 180 m east of Feather River, on west bank of narrow slough; 1.4 km south-southeast of the Thermalito Afterbay outlet. 32 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
  UC195370  Pyrola picta A. A. Heller 1914-7-23 11597 Butte Chico Meadows 1219 Comment
  JEPS98316  Pyrus communis Lowell Ahart 2000-5-17 8360 Butte 7 1/2 air miles W of Oroville (S margin of Thermalito Afterbay, N side of the poor dirt road, about 1/10 mi N of the Richvale Hwy, 1/2 mi E of Hwy 99) 42 Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  CAS-BOT-BC86636  Quercus douglasii Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10970839  Quercus kelloggii Mary Susan Taylor 1981-5-21 Taylor 3763 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
  LA205379  Quercus vacciniifolia E. B. Copeland; 1931-8-14 626 Butte Jonesville 1500.0 Comment
  RSA795770  Rafinesquia californica L. Ahart 2012-4-30 17928 Butte About 10 yards west of South Rim Trail, about 5/8 miles west of Highway 32, about 8 3/4 air miles northeast of Chico, south part of Upper Bidwell Park. 261 Comment
  CHSC11062  Ranunculus arvensis Lowell Ahart 1969-5-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  CDA3502  Ranunculus arvensis Sterling O. Mattoon 1971-4-24 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  CHSC51072  Ranunculus canus Pauleen Broyles 1988-2-25 1095 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. On e. side of Singer Creek in n.e. corner of Wurlitzer Addition. Along creek. Comment
  JEPS117511  Ranunculus canus Lowell Ahart 2010-5-22 16725 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 408 Comment
  CHSC84251  Ranunculus canus var. canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CHSC29233  Ranunculus muricatus M. S. Taylor 1980-4-1 2416 Butte Drainage, between Notre Dam Blvd and Hwy 99, and the Skyway and Humboldt Rd, just e of Chico. 70 Comment
  JEPS84920  Ranunculus muricatus Barbara Ertter with Lowell Ahart 1986-4-13 5888 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  SD129647  Ranunculus muricatus Barbara Ertter, Lowell Ahart 1986-4-13 5888 Butte ca 2 airmiles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch, mostly sheep pasture 29 Comment
  SEINET12088566  Ranunculus occidentalis Unknown 1966-1 320 Butte ca 7 mi E Oroville at 6120 Woodleaf St. Rt., 300 yds off Feathervale, behind house 244 Comment
  CHSC41517  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-5 325 Butte Ca. 1.0 mi sw of Jonesville on Humboldt Rd. at Colby Creek. Near stream in meadow. 1487 Comment
  CHSC41520  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-12 352 Butte N part of county, e of Philbrook Reservoir. 1889 Comment
  RSA4437  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  HSC93187  Ranunculus pusillus L. Ahart 1995-5-26 7573 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC58269  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC46851  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  CHSC93958  Ranunculus uncinatus var. uncinatus R. D. Fischer 2004-6-20 754 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  CHSC111394  Raphanus raphanistrum Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18013 Butte On disturbed soil, on the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UC203587  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 mi n of Oroville Comment
  UC870862  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-17 11882 Butte 5 mi e Chico; Canyon of Chico Creek Comment
  CHSC100418  Rhododendron occidentale L. P. Janeway; Heather Koeth 2008-11-17 9610 Butte Northern High Sierra Nevada. On the flats on the southwest side of Fall River at Nelsons Crossing (across from the mouth of Kenebeck Creek). 43 Comment
  UCD117982  Rhododendron occidentale Javier Penalosa 1962-6-18 2457 Butte Near confluence of French and Peavine creeks. 609 Comment
  SEINET10449291  Rhododendron occidentale Mary Susan Taylor 1980-5-27 Taylor 2735 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  CHSC45181  Rhynchospora capitellata Lowell Ahart 1980-7-20 2481 Butte In a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  JEPS98373  Rhynchospora capitellata Lowell Ahart 2000-7-11 8572 Butte 4 air mi N[?]E of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  SEINET177607 Image available Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  UC79695  Ribes nevadense T. S. Brandegee 1892-6-29 Butte Jonesville Comment
  UC436295  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UCD102477  Ribes roezlii M. Vincent 1964-4-10 559 Butte Hwy. 32. 10 miles NE of Chico. Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  SBBG128612  Robinia pseudoacacia L. Ahart, L. Hanson, S. Bazell, J. Guardino 2012-5-10 18002 Butte E side of the horse path, ca. 20 yards N of paved park rd, SW part of old walnut orchard, S of Vallombrosa Avenue, ca. 0.25 mi W of Peterson Drive, Lower Bidwell Park, Chico 76 Comment
  UC1563271  Rorippa curvisiliqua Lowell Ahart 1990-10-21 6641 Butte about 1/2 mi w Gold Flat (below the high water line of Lake Oroville, about 1 mi n Nelson Bar Road); w of Gold Flat, Lake Oroville 213 Comment
  CDA25120  Rorippa curvisiliqua T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  CHSC113193  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  SEINET10907260  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-21 Ahart 4878 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  CHSC113450  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS124147  Rorippa curvisiliqua var. orientalis Lowell Ahart 2015-11-7 20630 Butte About 1/8 mile southwest of the parking area at the end of Old Highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  CHSC109085  Rosa banksiae Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17869 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  CHSC43212  Rosa bridgesii L. P. Janeway 1987-6-19 2240 Butte Side ravine south from Sly Cr; 1.6 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC82396  Rosa californica Lowell Ahart 2002-5-15 9661 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  POM140209  Rosa californica A. A. Heller, H. E. Brown 1902-5-14 5546 Butte Berry Canyon (near Clear Creek) Comment
  SEINET8723569 Image available Rosa californica H. S. Reed July 10 297 Butte Sacramento river five miles northwest of Chico, altitude ca. 190 feet, Butte County. 58 Comment
  CHSC50112  Rosa canina Vernon Oswald 1990-5-8 4191 Butte Junction of Aquas Frias Rd and Afton Rd, west of Biggs. In an area of rice fields. 21 Comment
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Jun 19 2009
  CHSC43214  Rosa gymnocarpa L. P. Janeway 1987-5-28 2115 Butte Along spur road from Coyote Gap to the F.S. Station. 1325 Comment
  SEINET10483517  Rosa gymnocarpa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4464 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC102517  Rosa pisocarpa Lowell Ahart 2009-5-30 15800 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS115699  Rosa pisocarpa Lowell Ahart 2009-11-19 16542 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC87540  Rosa pisocarpa subsp. ahartii R. D. Fischer 2004-5-2 136 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at the end of 10 Mile House Road, near gated property boundary. In meadow, close to a drainage. East side of road, east side of Big Chico Creek. 228 Comment
  CAS-BOT-BC148253  Rosa woodsii var. ultramontana A. A. Heller 1928-7-10 14654 Butte Wet meadows at Butte Meadow in the yellow pine belt. Comment
  CHSC76419  Rotala ramosior Lowell Ahart 1999-10-28 8305 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC29107  Rubus laciniatus M. S. Taylor; J. D. Jokerst 1980-4-27 2556 Butte Along Middle Butte Creek off of Little Butte Creek, ca. 1 1/2 mi se of Ninshew. 609 Comment
  CHSC30715  Rubus laciniatus M. S. Taylor 1980-5-27 2649 A Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC37064  Rubus laciniatus L. Ahart 1982-9-29 3834 Butte Along the edge of rd and near Pinkard Creek, ca. 0.1 mi n of Lost Creek Reservoir Dam, ca. 2.1 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC147201  Rubus parviflorus Helen M. Edwards 1911-6-1 s.n. Butte De Sabla Comment
  CHSC30697  Rubus parviflorus M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  UC481513  Rubus parviflorus H. F. Copeland 1930-8-26 1328 Butte above hotel (Jonesville); Jonesville Comment
  CHSC50341  Rubus pensilvanicus Vernon Oswald 1990-5-14 4212 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  CHSC64049  Rumex acetosella S. C. Morey 1983-8-4 711 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS95968  Rumex acetosella Lowell Ahart 1999-6-12 8090 Butte large reservoir north of Beatson Hollow; North Table Mountain; about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 295 Comment
  CAS-BOT-BC422137  Rumex californicus Lowell Ahart 1982-9-13 3816 Butte Along the edge of Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC103146  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  UCD150347  Rumex persicarioides Harry A. George 1971-7-17 s.n. Butte Gray Lodge Wildlife Management Area, Field 14. Comment
  CDA42867  Rumex pulcher L. Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  SEINET10537601  Sagina apetala Mary Susan Taylor 1982-4-28 Taylor 4365 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  SEINET10537649  Sagina apetala var. barbata Mary Susan Taylor 1978-4-14 Taylor 1563 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC31546  Sagina decumbens subsp. occidentalis L. Ahart 1978-3-19 1615 Butte In pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS114725  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-8 14710 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  UC935757  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13030 Butte Butte Sink; near big pond on Sacramento Outing Club Comment
  JEPS88387  Sagittaria longiloba Vernon H. Oswald and Lowell Ahart 1996-7-22 8087 Butte on the e side of Tract 7.3, Sanctuary I in a roadside ditch s Refuge Headquarters (U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CAS-BOT-BC129902  Salix bonplandiana A. A. Heller 1914-3-21 11222 Butte Hills, 8 miles north of Oroville, below the Quercus Doutlasii belt. Comment
  CAS-BOT-BC129903  Salix bonplandiana A. A. Heller 1913-4-4 10694 Butte Levee at Oroville Comment
  SD928  Salix eastwoodiae E. B. Copeland 1931-6-11 Butte Jonesville; Kirby's Meadow 1750 Comment
  UCD110826  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow. 1750 Comment
  UC1506098  Salix exigua var. hindsiana Robert T. Clausen 1963-3-21 63013 Butte w of sewage disposal ponds Chico; Sacramento Valley, Sacramento R. drainage 110 Comment
  CHSC108966  Salix gooddingii Lowell Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/4 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  JEPS119585  Salix gooddingii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17866 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  JEPS119845  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southeast of intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  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
  CHSC108807  Salix laevigata Lowell Ahart 2012-4-9 17848 Butte Near a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  UC456789  Salix laevigata E. B. Copeland 1931-5-8 Butte 5-mile dam Chico Comment
  CAS-BOT-BC129581  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  UC456788  Salix melanopsis E. B. Copeland 1931-5-8 Butte Sandy Gulch Chico; Hooker Oak Ford, Sandy Gulch Comment
  CHSC8617  Salvia sonomensis L. V. Ritter 1969-5-2 311 Butte Ca. 2 mi. w of Cohasset; ca 10 yds. s of Cohasset highway. Comment
  SEINET10465315  Sambucus caerulea Mary Susan Taylor 1976-4-27 Taylor 1083 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  CHSC31750  Sambucus mexicana S. Posner 1972-9-21 Butte 50 yds. west of nord, 600 yds. south of Sacramento Ave, Chico. Comment
  CHSC92566  Sanicula bipinnata L. P. Janeway 2005-3-10 8356 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10939821  Sanicula bipinnata Mary Susan Taylor 1981-5-5 Taylor 3618 Butte T20N R6E ne sec 11. Forbestown quad. E side of spur rd off 21N35Y, ca. 0.5 mi SE of Feather Falls trailhead, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  CHSC4020  Sanicula bipinnatifida E. P. Parreno 1967-4-3 Butte Tabletop Mountain. Comment
  UC217478  Sanicula bipinnatifida H. M. Hall 1917-5-13 10301 Butte Paradise Comment
  UC875445  Sanicula bipinnatifida Lewis S. Rose 1937-6-10 37367 Butte Forbestown 838 Comment
  SEINET12120600  Sanicula bipinnatifida K. E. Warwick 1978-1 9 Butte ca 5 m S of Pentz Rd at intersection of Pentz Rd & Magalia-Pentz Hwy, ca 18 km N of Oroville Comment
  UCD127926  Sanicula bipinnatifida L. Ahart 1978-4-13 1633 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10840962  Sanicula crassicaulis Mary Susan Taylor, K. Tharp 1983-4-8 Taylor 4287 Butte T19N R4E se/ne sec 1. Oroville Dam quad. Immediate vicinity of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 1200 ft. 366 Comment
  RSA4483  Sanicula graveolens E. B. Copeland 1931-6-22 666 Butte Jonesville. On ridge east of the Summit 2100 Comment
  SEINET13945231 Image available Sanicula menziesii A. A. Heller 1915-1 11896 Butte Ridge above Enterprise in the Sierra Nevada, elevation about 2000 feet,on a north slope 610 Comment
  CHSC1985  Sanicula tuberosa A. Goekler 1929-4-21 Butte Paradise. 609 Comment
  SEINET10454587  Sanicula tuberosa Mary Susan Taylor 1981-3-16 Taylor 3414 A Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  SEINET10973486  Sarcodes sanguinea Mary Susan Taylor 1978-7-19 Taylor 1756 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC70840  Saxifraga californica Vernon Oswald 1998-3-16 8890 Butte North end of Upper Bidwell Park along lower Jeep Trail paralleling the east side Big Chico Creek north of the old homestead. 243 Comment
  SEINET12216574  Saxifraga californica G. H. Snodgrass 1981-1 PT- 16 Butte ca 8 mi E of Chico, S side of Butte Creek Canyon above Covered Bridge on Humbug Rd 244 Comment
  CDA25444  Saxifraga oregana T. C. Fuller 1962-7-12 9206 Butte 0.2 mile east of Jonesville. 0 Comment
  CHSC37094  Sceptridium multifidum L. Ahart 1982-9-13 3817 Butte Along mined edge of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC3358  Schinus dependens Robert L. Smith 1966-3-4 39 Butte U.S. Plant Introduction Station 5 miles SE of Chico. Comment
  CAS-BOT-BC111372  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-14 13031 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Comment
  RSA500434  Schoenoplectus subterminalis Vernon H. Oswald, L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd. 1.4 miles W of its jct with Coon Hollow Rd, 1.2 airmiles N of Philbrook Reservoir. 1753 Comment
  CAS-BOT-BC111832  Schoenoplectus tabernaemontani John Thomas Howell 1961-9-22 36724 Butte Bank of Feather River, Oroville. 53 Comment
  CAS-BOT-BC111833  Schoenoplectus tabernaemontani Lowell Ahart 1987-9-24 5898 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  RSA518696  Scrophularia californica subsp. floribunda L. Ahart 1990-10-21 6634 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 0.5 mile west of Gold Flat. 244 Comment
  CHSC42833  Scutellaria californica L. P. Janeway 1987-6-5 2146 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at the rd along French Cr. 640 Comment
  SEINET10836980  Scutellaria californica Mary Susan Taylor 1978-7-19 Taylor 1729 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UC1174820  Scutellaria californica E. K. Balls 1960-7-7 24170 Butte Banda Creek, Hwy 40 Banda Creek 579 Comment
  CHSC112466  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC31903  Scutellaria siphocampyloides L. Ahart 1977-5-20 1387 Butte Peter Ahart Ranch, Honcut. On banks of North Honcut Creek. 50 Comment
  UC1713641  Scutellaria siphocampyloides Mrs. C. C. Bruce May 1897 1835 Butte Big Chico Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CAS-BOT-BC415014  Sedella pumila John Thomas Howell 1976-4-1 51535 Butte Table Mountain, 4 to 5 miles N of Oroville 304 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
  UCSB63722  Sedella pumila Webster, Steven 1986-4-6 Butte Ca. 4.5 mi. E of Chico; Chico Quadrangle, SW1/4, NE1/4, Sect. 22, T22N, R2E, MDM 167 Comment
  CHSC109544  Sedum spathulifolium L. P. Janeway 2012-5-29 10830 Butte Northern High Sierra Nevada. Along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south-southwest of Ponderosa Reservoir dam. 482 Comment
  RSA0081476  Sedum spathulifolium I. L. Wiggins, Dorothy Wiggins 1961-6-10 16313 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  CAS-BOT-BC62123  Selaginella hansenii M. S. Taylor; K. Tharp 1983-3-12 5237 Butte Chico quad, along small rd off Stillson Canyon Rd (leading to Mannion Property), ca. 3 mi sse of Chico 152 Comment
  CHSC109128  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On a bank, on the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  SEINET10471204  Selaginella wallacei Lawrence P. Janeway 1984-9-29 Janeway 1176 Butte Brush Creek Quad, T21N R6E NW 1/4 of sec. 35, 1850 feet. Near Feather Falls overlook on Fall River (a tributary to Middle Fork Feather River). "Feather Falls Scenic Area". On N-facing rock faces (granite), partially shaded, with mosses. 565 Comment
  SEINET10932886  Selaginella wallacei Mary Susan Taylor 1980-9-27 Taylor 3345 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC84749  Senecio eurycephalus var. lewisrosei L. P. Janeway; John Hunt 2003-6-20 7855 Butte Northern Sierra Nevada Foothills. Above northwest edge of West Branch Feather River arm of Lake Oroville, 1015 m north of Lime Saddle. Serpentine. 305 Comment
  RSA201477  Senecio eurycephalus var. lewisrosei J. T. Howell 1962-6-16 s.n. Butte Magalia 732 Comment
  CAS-BOT-BC363991  Senecio integerrimus var. major Clarence R. Quick 1954-6-19 54 -03 Butte Big Bar Mt. ridge east of Pulga Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  CHSC101142  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC364546  Senecio vulgaris Lowell Ahart 1985-3-24 4867 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
  CHSC37371  Setaria gracilis R. A. Schlising 1981-9-20 4202 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC243564  Setaria parviflora John Thomas Howell 1959-9-20 34678 Butte Lower foothills, eastern outskirts of Oroville, Sierra Nevada 60 Comment
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  CHSC66102  Setaria sphacelata Vernon H. Oswald 1996-5-23 7630 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NE corner of Tract 7.2. Sanctuary I. 33 Comment
  CAS-BOT-BC240191  Setaria viridis John Thomas Howell 1959-9-20 34679 Butte Eastern outskirts of Oroville 60 Comment
  JEPS115349  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET10869786  Sherardia arvensis Mary Susan Taylor 1976-3-30 Taylor 1040 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  CHSC34955  Sidalcea asprella J. D. Jokerst; R. A. Schlising 1979-5-18 3408 Butte North of Oroville and Table Mt., 1.75 miles S of Cherokee Historical Site on Cherokee Road. Comment
  SEINET10937539  Sidalcea calycosa Mary Susan Taylor 1975-10-4 Taylor 956 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
  HSC46141  Sidalcea calycosa subsp. calycosa J. P. Smith, J. O. Sawyer 1973-4-14 6053 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  JEPS118038  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte On damp brown to black clay soil, about 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2 1/2 north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 65 Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  CHSC1060  Sidalcea glaucescens V. Holt 1935-8-1 Butte De Sabla. 762 Comment
  UCD116652  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville. 1550 Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  CHSC59328  Sidalcea hartwegii J. L. Guardino 1992-4-18 14 Butte Grassy area 20 ft s of ephemeral stream. Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  CHSC95211  Sidalcea hartwegii R. D. Fischer 2004-4-25 807 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected off ridge top along Hwy 32 and the beginning of the Bloodypin Trail. 335 Comment
  POM253295  Sidalcea hartwegii A. A. Heller 1938-4-17 15040 Butte Stony slope back of the Salmon Hole Chico creek east of Chico Comment
  SEINET10480002  Sidalcea hartwegii Mary Susan Taylor 1974-4-30 Taylor 200 Butte Along Cohasset Road, NE of Chico. Comment
  UC108886  Sidalcea hartwegii Mrs. R. M. Austin June 1883 Butte near Chico; near Chico Comment
  RSA739637  Sidalcea malviflora subsp. celata B. Castro, David Toren 2005-7-21 1520 Butte 9 air miles NE of Paradise, 2.5 miles NE of Flea Mtn, at the crossing of Lockerman Creek by USFS road 24N13. 951 Comment
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Aug 6 2019
  UCD116832  Sidalcea oregana subsp. spicata H. F. Copeland 1930-7-24 s.n. Butte Jonesville. Comment
  CAS-BOT-BC213191  Sidalcea robusta Mrs. J. H. Morrison 1934-5-8 s.n. Butte Durham Comment
  UC725680  Sidalcea robusta A. A. Heller 1940-4-28 15564 Butte opposite the Golf Links e Chico (ridge above Chico Creek); above Chico Creek, e of Chico Comment
  CAS-BOT-BC384466  Silene antirrhina Lowell Ahart 1985-5-31 5032 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
  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
  SEINET10537492  Silene antirrhina Lowell Ahart 1985-5-31 Ahart 5032 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC55053  Silene bernardina Lowell Ahart 1991-9-19 6729 Butte Near where the two branches of Wildcat Creek come together, about 2 miles north-west of Four Trees, about 2 miles north-east of Coyote Gap. 1219 Comment
  UC1609334  Silene bernardina Lowell Ahart 1993-7-29 7113 Butte about 2 mi e Bald Mountain (about 6 air mi ne of Stirling City); e of Bald Mountain, ne of Stirling City 1524 Comment
  SEINET10537657  Silene californica Mary Susan Taylor 1981-4-5 Taylor 3495 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC58899  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC38303  Silene gallica Vernon Oswald 1983-3-26 205 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC81483  Silene laciniata subsp. californica Julie Rose 2000-4-25 90 Butte 6.8 miles on Hwy 32 East to Green Gate. About a quarter mile down the trail. 365 Comment
  CHSC65098  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  CHSC90830  Sisymbrium altissimum Lowell Ahart 2005-5-2 11754 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC546  Sisymbrium officinale E. Canfield 1904-5-10 Butte Hooker Oak Field. 76 Comment
  RSA769596  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  SEINET10874424  Sisymbrium officinale Mary Susan Taylor 1974-4-28 Taylor 211 B Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  SEINET4171045  Sisyrinchium bellum A. A. Heller 1938-7-20 Butte Snag Lake, 7 mi. E of Chaparral. 2134 Comment
  CHSC116307  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte On the bottom of Grizzly Creek, flowrs into Dark Canyone about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, aobut 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  JEPS110130  Solanum americanum Lowell Ahart 2006-9-28 13377 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS121889  Solanum americanum Lowell Ahart 2014-11-17 19911 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, about 11 miles (air) northeast of Oroville. Comment
  SEINET10546504  Solanum nodiflorum Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5225 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CHSC42429  Solanum parishii Lowell Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC93797  Solanum parishii Lowell Ahart 2006-5-19 12633 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  NY821123  Solanum parishii Mrs. C. C. Bruce 05 1898 1872 Butte Little Chico Comment
  CDA35762  Solanum rostratum J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330072 Butte Chico; Rancho Llano Seco. 0 Comment
  CHSC30664  Solidago elongata M. S. Taylor 1978-7-21 1832 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte County-Plumas County line. 1341 Comment
  CHSC13804  Solidago velutina subsp. californica K. R. Stern 1972-9-19 3782 Butte Margins of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  SEINET10474959  Soliva pterosperma Mary Susan Taylor 1979-5-6 Taylor 2006 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC38391  Sonchus oleraceus Vernon Oswald 1983-5-21 512 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC13807  Sorghum halepense J. G. Moore 1969-5-7 40 Butte Salem St. between 7th and 8th Sts. on e side of road. 60 Comment
  CHSC43806  Sparganium emersum subsp. emersum Vernon Oswald; Lowell Ahart 1987-7-1 3073 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. In the largest lake. 1935 Comment
  SEINET3450876  Spergula arvensis subsp. arvensis Unknown 2003-6-23 10307 Butte Oroville, Oroville, about 12 miles southeast, about 2 miles north and 2 miles east of Honcut, about 0.5 miles east of the Palermo Honcut highway, Peter Ahart Ranch 30 Comment
  CHSC90650  Spergularia rubra Lowell Ahart 2005-4-2 11688 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  JEPS121989  Sphenosciadium capitellatum Lowell Ahart 2014-7-13 19648 Butte North part of meadow, about 100 yards southeast of Philbrook Road, about 1 air mile west of Philbrook Reservoir. Comment
  SEINET10454595  Sphenosciadium capitellatum Mary Susan Taylor 1978-7-18 Taylor 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC6001  Spiraea M. MacArthur 1968-6-19 256 Butte SE side of Auditorium bld., Chico State College campus. 60 Comment
  CHSC11995  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesvile. 1500 Comment
  SEINET264180  Spiraea douglasii R. J. Becraft 1929-7-21 Butte Philbrook Creek 1829 Comment
  SEINET10470128  Spiranthes porrifolia Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4045 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
  SEINET10905342  Spiranthes romanzoffiana Mary Susan Taylor 1977-1 Butte Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  UC196365  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  POM63408  Stachys rigida subsp. quercetorum A. A. Heller, H. E. Brown 1902-5-9 12251 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC52208  Stachys stricta L. P. Janeway 1988-6-29 2900 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi S of the Skyway, 2.9 mi E of the Butte Cr bridge. 170 Comment
  CHSC61638  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte On banks of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609332  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  CHSC65336  Stellaria obtusa Lowell Ahart 1995-10-3 7675 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC96617  Stellaria pallida Lowell Ahart 2007-3-12 13591 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley. 21 Comment
  UC1609323  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam 1158 Comment
  UC1586423  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald and Lowell Ahart 1990-10-11 4463 Butte about 4 mi s Jarbo Gap (spur road off Dark Canyon Rd, leading to the opening between railroad tunnels No 7 & 8) 335 Comment
  JEPS121971  Stipa stillmanii Lowell Ahart 2014-7-7 19567 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  CHSC7047  Streptanthus diversifolius Darron Cook 1969-4-22 66 Butte W. side road top Table Mtn. ca. 7 mi n of Oroville. Comment
  HSC35736  Streptanthus diversifolius Dave Knorr 1974-4-20 136 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  UCSB63727  Streptanthus diversifolius Ramsey, Ellen 1986-4-1 Butte N end of Table Mountain ca. 400 yds. W of Table Mountain Cherokee Road ca. 6 mi. N of Oroville 243 Comment
  CAS-BOT-BC87425  Streptanthus polygaloides Lewis S. Rose 1939-6-7 39248 Butte North Fork of Feather River, 3 miles south of Pulga. 609 Comment
  CHSC33177  Streptanthus polygaloides R. E. Preston; L. E. Preston 1981-5-25 70 Butte Ca. 320 m n of the jct of the Skyway and Coutelenc Rd., Magalia. 700 Comment
  CHSC48353  Streptanthus tortuosus Vernon Oswald 1985-5-28 1783 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. 1011 Comment
  UC1594720  Streptanthus tortuosus Lowell Ahart 1992-7-29 6872 Butte slopes about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  HSC96692  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte N High Sierra Nevada, 0.6 km E of Concow Rd., 1.1 km NE of Rag Dump, 3.8 mi. N of Flea Mtn. 1248 Comment
  CHSC64153  Streptopus amplexifolius var. americanus Hal Durio 1994-7-7 Butte Plumas Nat. Forest. Old placer mining location. Flat along Pinkard Ck., 1 1/4 mile north of Lost Ck. Res., 1 mile west of Sly Ck. Reservoir. East of USFS Road 22N24. 1097 Comment
  UCD150344  Stuckenia pectinata William Anderson 1964-7-24 s.n. Butte Colusa Highway and Pennington Rd. Comment
  SEINET10475187  Stylocline filaginea Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4854 Butte Serpentine Point, west of Yankee Hill. Comment
  RSA304177  Styrax redivivus James R. Shevock 1972-5-19 1783 Butte S of Storie. Feather River Cyn. 610 Comment
  SEINET11933193  Suaeda nigra Unknown 1983-1 4452 Butte ca 0.12 mi S of the Graylodge Wildlife Refuge HQ, ca 12 mi SW of Gridley 35 Comment
  JEPS7824  Swertia albicaulis var. nitida Rimo Bacigalupi with Richard Hauke and Georgie Bacigalupi 1954-7-15 4720 Butte 0.3 mi e Nimshew (along Nimshew road, 1.1 mi below its junction with main Magalia-Tirling road) 792 Comment
  SEINET10872936  Symphoricarpos acutus Lowell Ahart, L. Hanson 1985-5-20 Ahart 5026 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CHSC51350  Symphyotrichum bracteolatum Vernon H. Oswald 1990-9-4 4446 Butte Near the end of Feather Falls Trail at Fall River, just upstream from the falls. 585 Comment
  CHSC103114  Symphyotrichum chilense Lowell Ahart 2009-8-23 16294 Butte Near small drainages, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS119919  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC600726  Symphyotrichum foliaceum H. F. Copeland 1932-8-16 Butte Butte Creek (woods by) Jonesville 1500 Comment
  CHSC116005  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20550 Butte East side of Philbrook Road, about 100 yards east of the bridge across the West Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. 1510 Comment
  CAS-BOT-BC221935  Taeniatherum caput-medusae John Thomas Howell 1967-6-22 42628 Butte Magalia 701 Comment
  CAS-BOT-BC221939  Taeniatherum caput-medusae Lowell Ahart 1977-6-2 1504 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico Comment
  CHSC109620  Taraxacum officinale Lowell Ahart 2012-5-14 18047 Butte Along the edges of the paved road, a little west of Table 9, east of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC30990  Tauschia hartwegii M. S. Taylor 1980-6-14 2885 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC3159  Tauschia hartwegii Dona Kingsford 1966-3-31 Butte Location: .5 mi from 4th. Street entrance of 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
  UC1609369  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  CHSC46149  Tetrapteron graciliflorum Lowell Ahart 1976-4-11 1059 Butte Along a wash, Peter Ahart Ranch, about 1 1/4 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC110032  Thuja Lowell Ahart; Josephine Guardino, Tyron Chang 2012-10-12 18478 Butte Just east of the sign Orient Street and E 1st Street, on the south side of Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC88199  Thysanocarpus curvipes A. A. Heller; H. E. Brown 1902-5-12 5528 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC88203  Thysanocarpus curvipes A. A. Heller 1915-4-20 11855 Butte Chico-Centers road 3 miles from Chico. Comment
  CHSC31174  Thysanocarpus curvipes M. S. Taylor 1980-4-16 2486 Butte Lake Oroville State Recreation Area, ca. 0.5 mi s of Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC42005  Thysanocarpus curvipes Lowell Ahart 1975-3-27 728 Butte Along Swedes Flat Road, about 1/8 mile east of the bridge across Rocky Honcut Creek, north-east of Bangor. 304 Comment
  CAS-BOT-BC88219  Thysanocarpus curvipes Lowell Ahart 1981-3-29 2711 Butte Along Ponderosa Way, Ponderosa Dam. 350 Comment
  CAS-BOT-BC67297  Thysanocarpus radians A. A. Heller 1916-3-18 12281 Butte 8 miles north of Oroville. 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
  SEINET3449123  Thysanocarpus radians Unknown 2003-3-24 10023 Butte Feather Falls, Feather Falls, about 5 air miles northeast, about 3 miles north of Lumpkin Ridge Road, on the north side of Fall River, west of the bridge across Fall River 40 Comment
  SEINET10479950  Tilia americana Mary Susan Taylor 1975-5-6 Taylor 553 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  UC203645  Tofieldia occidentalis subsp. occidentalis A. A. Heller 1914-8-7 11654 Butte Butte Meadows 1219 Comment
  JEPS119801  Torilis arvensis Lowell Ahart 2012-5-20 18091 Butte On the east side of the Humboldt Trail, northeast of the Disc Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CHSC111980  Torilis arvensis subsp. purpurea Lowell Ahart 2012-6-2 18130 Butte Along the sides of Truex Rd., W of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. NW of West Branch Bridge across Lake Oroville. 286 Comment