Search Results — 2000 specimen records retrieved (1601 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)
 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC330627  Acer glabrum var. glabrum H. F. Copeland 1929-6-11 s.n. Butte Jonesville, near Butte Creek 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
  CHSC103953  Acer macrophyllum Lowell Ahart 2010-5-23 16732 Butte On the west side of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 455 Comment
  SEINET7893982  Acer macrophyllum R. T. Short 1961-4-11 s.n. Butte On US 40 alternate, 15 miles E of Oroville. (Hwy 70) 549 Comment
  UC203618  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canyon of Chico Creek Comment
  UC870109  Acer negundo var. arizonicum Lewis S. Rose 1937-6-10 37378 Butte 7 mi w Honcut (along the banks of the Feather River); banks of Feather River, w of Honcut 22 Comment
  CHSC65773  Acer negundo var. californicum Vernon H. Oswald 1996-4-10 7350 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 edge of a branch of Angel Slough at the SW corner of Tract 2, Sanctuary 1. 32 Comment
  CAS-BOT-BC21703  Achillea millefolium H. F. Copeland 1920-8-29 148 Butte Jonesville 1219 Comment
  RSA299172  Achnatherum lemmonii var. lemmonii J. T. Howell 1962-6-16 37566 Butte Magalia 732 Comment
  CAS-BOT-BC210738  Achnatherum nelsonii M. S. Taylor 1982-5-2 4395 Butte N side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  CHSC92276  Achnatherum stillmanii L. P. Janeway; B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly-facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  CHSC31120  Achyrachaena mollis Roberta A. Boer 1980-4-25 17 Butte Ca. 1/4 mi n of Humboldt Rd. and 1.5 mi e of the jct of Hwy 32 and Hwy 99, ca. 2.0 mi e of Chico. 131 Comment
  CHSC78250  Acmispon americanus var. americanus Lowell Ahart 2000-6-27 8525 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line,about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS122006  Acmispon argophyllus var. fremontii Lowell Ahart 2014-5-13 19460 Butte Below the high water line of Lake Oroville, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. Comment
  CAS-BOT-BC204851  Acmispon argophyllus var. fremontii Lowell Ahart 1983-6-26 4162 Butte Along Bean Creek Road, about 2 miles south of LIttle Bald Rock, about 19 miles north-east of Oroville 800 Comment
  CHSC33115  Acmispon brachycarpus M. S. Taylor 1981-5-14 3734 Butte N side of Feather River Hwy 70 at Plumas NF boundary sign, ca. 2 mi ne of Jarbo Gap. 609 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  JEPS120601  Acmispon nevadensis Lowell Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC112732  Acmispon nevadensis var. nevadensis Lowell Ahart 2013-11-17 19269 Butte Steep hillside, about 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 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
  JEPS119989  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of Bloody Pin Trail, about 1/2 way between Guardian Trail and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CHSC39124  Aconogonon phytolaccifolium R. A. Schlising 1983-7-24 4341 Butte E of Stirling City, at creek in Breakneck Canyon. 1417 Comment
  CHSC28878  Adiantum capillus-veneris M. S. Taylor 1979-5-4 1983 Butte Millsap Bar campground, ca. 9 mi ne of jct of Millsap Bar Rd with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC39801  Adiantum capillus-veneris Ruby Gist 1935-3-1 Butte Fern Banks. 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
  SEINET11716733  Adiantum jordanii B. K. Madsen 1970-1 22 Butte S side of Chico Canyon Rd, ca 300 yards S of Municipal Golf Course bdg across Big Chico Creek, Chico Comment
  CHSC111138  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte Along the poor dirt road, 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. 298 Comment
  CHSC31739  Aegilops triuncialis L. Ahart 1976-5-2 1089 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC107098  Aesculus californica M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  RSA409472  Agastache urticifolia M. B. Dunkle 1945-8-7 9337 Butte Paradise Lake, Klamath Nat l. Forest, Marble Mts. (San Joaquin Co.?) Comment
  CHSC50541  Agoseris aurantiaca Vernon Oswald 1990-7-3 4344 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC79442  Agoseris retrorsa G. F. Hrusa 1997-5-1 13715 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 780 Comment
  UC1562347  Agrimonia gryposepala Vernon Oswald and Lowell Ahart 1990-7-31 4423 Butte ca 4 mi n Concow (meadow at headwaters of Concow Creek); Concow Creek 1097 Comment
  SEINET10970336  Agrimonia gryposepala Vernon H. Oswald, Lowell Ahart 1990-7-31 Oswald 4423 Butte Meadow at the headwaters of Concow Creek, ca 4 miles north of Concow. From a single localized colony near the bank of the creek traversing the meadow. 1095 Comment
  JEPS114990  Agrostis avenacea Lowell Ahart 2008-5-21 14779 Butte below the high water line of Lake Oroville, on the N and S side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 246 Comment
  UC1562427  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte e Enterprise Boat Launch Area (about 1/8 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 259 Comment
  CAS-BOT-BC127515  Agrostis capillaris Lowell Ahart 1988-9-4 6179 Butte On the bottom and sides of Big Kimshew Creek, about 1 air mile northeast of Jones Meadow. 1920 Comment
  CHSC96953  Agrostis exarata Lowell Ahart 2007-7-8 14269 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CAS-BOT-BC139718  Agrostis gigantea Lowell Ahart 1981-8-15 3045 Butte Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  POM183177  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  UC573807  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadow Paynes Creek Quad. 1341 Comment
  UCD53330  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  JEPS87680  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte about 3 1/2 air mi n Oroville (s. edge of Cottonwood Rd, on e. side of overpass over Highway 70) 60 Comment
  CHSC105518  Agrostis variabilis Lowell Ahart 2010-9-28 17257 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  SEINET10790429  Agrostis variabilis A. Arthur Heller 1914-8-7 Heller 11660 Butte Summit end of Jonesville on a north slope where snow lies until midsummer. Collected in Yellowstone Park. 2134 Comment
  SEINET10936190  Ailanthus altissima Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4208 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC111391  Aira caryophyllea Lowell Ahart 2012-5-2 17978 Butte On the south side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC30712  Aira caryophyllea M. S. Taylor 1980-5-27 2704 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 Comment
  CHSC38782  Aira caryophyllea Vernon Oswald 1983-3-6 123 Butte Upper Bidwell Park, Chico, on the north rim 2.7 mi e of the power lines. 341 Comment
  CAS-BOT-BC138412  Aira caryophyllea var. capillaris Lowell Ahart 1980-4-13 2079 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC30549  Aira elegans J. D. Jokerst; M. S. Taylor, L. Ahart 1980-4-7 559 Butte NE of the jct of Upper Rocky Honcut Cr and Swedes Flat Rd (10 mi SE of Oroville). Comment
  SEINET9753572 Image available Alisma lanceolatum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC38759  Alisma triviale Vernon Oswald 1983-6-29 793 Butte Upper Bidwell Park, Chico, ca. 300 ft w of Day Camp. In a swampy oxbow of Chico Creek. 91 Comment
  CAS-BOT-BC131914  Allium Lowell Ahart 1978-5-16 s.n. Butte North Honcut Creek Comment
  CDA14089  Allium amplectens G. F. Hrusa, T. D. Wilfred 1997-7-3 13974 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  UC3060  Allium amplectens Mrs. Bruce May 1898 1898 Butte Little Chico Butte Comment
  CAS-BOT-BC460375  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1898 Butte Fields near Chico Comment
  CAS-BOT-BC460737  Allium amplectens Lowell Ahart 1980-6-19 2384 Butte Along Swedes Flat Road, near Bangor. Comment
  CAS-BOT-BC460739  Allium amplectens A. A. Heller 1914-4-16 11299 Butte In a field near the Plant Introduction Garden, Cico-Centerville road, 2 miles from Chico. Comment
  SEINET12053364  Allium amplectens Unknown 5 s.n. Butte Chico Comment
  UC600451  Allium campanulatum H. F. Copeland 1930-7-19 Butte Jonesville 1524 Comment
  JEPS27141  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit Table Mt. 304 Comment
  HSC32624  Allium cratericola Dave Knorr 1974-4-20 142 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  SEINET3884402  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3373 Butte Top of Table Mountain just w. of Cherokee Rd., 6.4 mi s. of Hwy. #70 n. of Oroville.; 0 Comment
  UCD138462  Allium cratericola C. D. Snider 1975-4-20 25 Butte Table Mountain: 7 mi. S of Hwy 70, Cherokee Road 5 mi S of Cherokee. 0.5 mi NW of road. 381 Comment
  JEPS122447  Allium hyalinum L. P. Janeway 2015-3-9 11635 Butte Sacramento Valley. Just north of the Thermalito Forebay, North Picnic Area. Quad: Oroville 7.5' Comment
  CDA14201  Allium membranaceum G. F. Hrusa 1997-5-29 13803 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  SEINET12052476  Allium membranaceum F. W. Hoffman 1952-1 4071 G.N. 950 Butte Ponderosa Road, 0.5 mi from Magalia-Mosquito Creek Road & 0.6 mi above West Branch of Feather River Comment
  CHSC88084  Allium peninsulare var. peninsulare R. D. Fischer 2004-4-2 168 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down 10 Mile House Road on road edge. 381 Comment
  CAS-BOT-BC132075  Allium peninsulare var. peninsulare Lowell Ahart 1980-5-25 2317 Butte Along Swedes Flat Road, near Bangor Comment
  CHSC49481  Allium validum Vernon Oswald; Lowell Ahart 1987-7-1 3046 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  JEPS104414  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the n side of Ponderosa Reservoir, ca 1 1/2 mi (air) e of the Ponderosa Dam. 331 Comment
  UC879964  Allophyllum integrifolium A. A. Heller 1917-7-26 12844 Butte Butte Meadows 1402 Comment
  CDA5624  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC42853  Alopecurus geniculatus Lowell Ahart 1987-5-6 5547 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC31727  Alopecurus saccatus L. Ahart 1980-5-10 2236 Butte Ca. 2.5 mi n and 1/8 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  SACT000318  Alopecurus saccatus Annette Waters 1958-4-19 Butte in area which has recently been submerged and is now drying out, still wet. At edge of road in rocky alluvial soil. En route from Oroville to Chico, 2.6 miles southeast of junction with highway 99E Comment
  CHSC36550  Amaranthus albus L. Ahart 1982-7-10 3671 Butte About 1/4 e of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC42941  Amaranthus albus Lowell Ahart 1987-7-17 5835 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  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
  CHSC102397  Amaranthus deflexus Lowell Ahart 2009-7-3 15983 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10478807  Amaranthus graecizans Mary Susan Taylor 1977-8-16 Taylor 1442 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC112628  Amaranthus palmeri Lowell Ahart 2013-10-16 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about one mile east of Biggs. 30 Comment
  JEPS95988  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte northwest of Parrott Landing; Chico, east side of the Sacramento River; large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC116013  Ambrosia psilostachya Lowell Ahart 2015-10-9 20539 Butte West edge of Highway 32, about 100 yards south of Ten Mile House road, about 10 miles northeast of Chico. 464 Comment
  CAS-BOT-BC142950  Amelanchier utahensis H. F. Copeland 1929-6-10 1208 Butte Jonesville 1524 Comment
  SEINET10452827  Ammannia auriculata Mary Susan Taylor 1978-7-22 Taylor 1851 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  RSA6525  Ammannia coccinea Jens Clausen 1932-9-16 658 Butte 20 miles south of Chico, between Richvale & Nelson Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  CHSC111158  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte On both sides of a small drainage, 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. 269 Comment
  CHSC33136  Amsinckia intermedia J. D. Jokerst 1980-4-17 592 Butte Top of North Table Mt at its northern most tip. 472 Comment
  UC614660  Amsinckia intermedia L. Constance, J. L. Morrison 1938-4-30 2178 Butte 8 mi n Chico (between Big and Little Chico Creeks); Sierra Nevada foothills 609 Comment
  CHSC87444  Amsinckia lycopsoides R. D. Fischer 2004-3-29 78 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along old Hwy 32 road on bluffs above Humboldt Trail at park property fence line. 441 Comment
  CHSC31550  Amsinckia menziesii L. Ahart 1980-5-12 2246 Butte On dredger piles along North Honcut Creek, ca. 1 mi n and 2.5 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38270  Amsinckia menziesii Vernon Oswald 1983-4-20 353 Butte Upper Bidwell Park, Chico, beside equestrian trail on the n side of Upper Park Rd. ca. 300 ft e of its junction with Wildwood Ave. 85 Comment
  CAS-BOT-BC26968  Amsinckia verna Amos Arthur Heller 1914-4-21 11310 Butte Chico Comment
  CHSC3249  Anagallis arvensis Virginia Hagaman 1966-3-21 81 Butte 2 miles from Cherokee on Clark Road at edge of road. Comment
  CHSC3312  Anagallis arvensis M. Gregg 1966-3-21 52 Butte On Pentz Rd. approx. 1 mile east of Clark Rd. At a pond at the foot of the hill. Comment
  UCD159566  Anaphalis margaritacea D. S. Park 2011-6-24 303 Butte Wetlands off Larkin Rd. 46 Comment
  CHSC8165  Andropogon glomeratus var. scabriglumis Dave Isle 1969-5-17 480 Butte Just off the N. side of the Upper Bidwell Park road about 40 yards E. of the Bear Hole turn-off. 59 Comment
  CHSC102295  Andropogon virginicus var. virginicus Lowell Ahart 2009-10-7 16409 Butte Just underwater when the Thermalito Afterbay is full, Larking Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 136 Comment
  CHSC44163  Anemone occidentalis V. Oswald; L. Ahart 1988-7-29 3644 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC79636  Angelica breweri G. F. Hrusa; T. D. Wilfred 1996-7-9 13184 Butte On 22N89 approx. 0.3 m. from intersection of Hwy 162. Plumas National Forest. [Lat./Long. on label is '39 45 N; 121 18 W']. 1200 Comment
  CHSC21146  Anthemis cotula M. S. Taylor 1975-10-3 939 Butte On sandbar in Sacramento River, ca. 5 mi W of Chico. 36 Comment
  RSA769680  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte North side of gravel road, Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC43141  Antirrhinum leptaleum R. Banchero; R. Schlising 1980-9-6 331 Butte 0.7 mi ne of the jct of Lumpkin and Forbestown Rd. 493 Comment
  CHSC35695  Aphyllon purpureum J. D. Jokerst 1982-4-19 1531 Butte Top of North Table Mt, S of and adjacent to the second E-W oriented drainage N of Cherokee Rd at the mesa's E edge. 365 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC45021  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 227 Butte Ca. 3.3 air miles NE of Stirling City. 1417 Comment
  UC398917  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville 1550 Comment
  LA210043  Arabis glabra var. glabra E. B. Copeland; 1929-7-29 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC167245  Aralia californica Lowell Ahart 1983-7-24 4214 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC28418  Aralia californica M. S. Taylor 1979-10-5 2227 Butte Along stream entering Paradise Lake on se side, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC93516  Arbutus menziesii L. P. Janeway; B. Castro, Ana Castro Instone 2006-4-23 8559 Butte Northern Sierra Nevada Foothills. North Table Mountain; near head of Campbell Creek and Beatson Hollow, about 150 m south of Phantom Falls. On steep west-facing slope between the top tablelands and the bottom of the Hollow. 375 Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CAS-BOT-BC407722  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  CHSC45038  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte Host trees were on both sides of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 air miles south-west of Bald Mountain. 1005 Comment
  SEINET10492818  Arceuthobium americanum Mary Susan Taylor 1976-5-3 Taylor 1104 Butte On Big Bald Rock, ca. 1/4 mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Oroville; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  CHSC43230  Arceuthobium campylopodum Lowell Ahart 1987-9-29 5907 Butte Along the dirt road that ends at Sugar Pine Point, about 1/2 mile south of Lumpkin Ridge Road, about 1 mile southeast of Camp 18, about 7 miles north-east of Feather Falls. 1280 Comment
  CAS-BOT-BC27257  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Comment
  CAS-BOT-BC24438  Arctostaphylos manzanita J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1682 Butte Top of North Table Mtn. at its nw. corner. Center of w. edge section 32. Comment
  SD60317  Arctostaphylos 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
  SEINET10449247  Arctostaphylos manzanita Mary Susan Taylor 1974-5-20 Taylor 255 A Butte Chico. Comment
  UCD52097  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51105 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52158  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51104 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52240  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51562 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38867  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte At Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC38869  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1975-6-15 51113 Butte Paradise, Skyway and Montana Drive 609 Comment
  OBI69253  Arctostaphylos manzanita subsp. manzanita Kari Fisher, Bill Fisher 2000-11-11 57 Butte Bidwell Park, along Chico Creek, close to golf course. 84 Comment
  CHSC23443  Arctostaphylos manzanita subsp. roofii K. R. Stern 1974-6-30 5774 Butte Ca. 13 mi NE of Stirling City. 1950 Comment
  CAS-BOT-BC38866  Arctostaphylos manzanita subsp. wieslanderi M. S. Taylor; E. J. Pierce 1981-1-29 3374 Butte Cohasset Ridge, ca. 1 mi. s o Cohasset. Comment
  POM77541  Arctostaphylos mewukka C. C. Bruce 1897-01 1792 Butte Foothills Comment
  JEPS117428  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville 741 Comment
  JEPS119541  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-1-12 17735 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  RSA795329  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 742 Comment
  CHSC34803  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-21 3780 Butte E side of rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi NE of Magalia. 1188 Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 air mi W of Elks Retreat. 1310 Comment
  UC481530  Arctostaphylos nevadensis H. F. Copeland 1931-6-11 Butte above Kirby Meadows; Jonesville Comment
  CAS-BOT-BC46720  Arctostaphylos patula M. S. Taylor 1974-3-3 71 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway to Paradise. 76 Comment
  SEINET10973498  Arctostaphylos patula Mary Susan Taylor 1980-5-8 Taylor 2602 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SEINET11987209  Arctostaphylos truei W. Knight, Knight, I. 1981-1 4109 Butte 27 mi N of Chico, Hwy 32 1067 Comment
  HSC72757  Arctostaphylos viscida M. S. Taylor, Timothy B. Devine, M Merryman 1981-2-11 3376 Butte E side of Lumpkin Rd., ca. 300 ft. N of Macabes Creek, ca. 2 mi. N of jct. of Lumpkin Rd. and Hwy. 162, ca. 13 mi. NE of Oroville 457 Comment
  CAS-BOT-BC48290  Arctostaphylos viscida subsp. viscida John Thomas Howell 1955-6-15 30489 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CHSC109106  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC95990  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 46 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  CHSC28805  Aristida oligantha J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 407 Butte Top of north Table Mt, 300 m NW. of the intersection of Cherokee Rd. Comment
  JEPS98523  Aristida oligantha Lowell Ahart 2000-9-17 8692 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC37505  Aristida ternipes var. hamulosa J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1679 Butte Top of Table Mt. top of the bench that is ca 200 meters north of Phantom Falls (Wedge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  CHSC49508  Aristida ternipes var. hamulosa Vernon Oswald 1985-6-10 1826 Butte Hwy 32 3.1 mi e of Hwy 99. 164 Comment
  UC143064  Aristolochia californica Dr. E. B. Copeland 1903-4-10 3044 Butte Chico Comment
  UC650550  Aristolochia californica Mrs. C. C. Bruce March 1897 1794 Butte Little Chico Comment
  UC1564791  Arnica chamissonis V. Oswald and L. Ahart 1989-7-27 3822 Butte 3.3 mi se, Humbug Rd at Butte Creek House Jonesville; Butte Creek 1767 Comment
  CHSC43188  Arnica dealbata Robert Banchero 1981-8-4 641 Butte Ca 1.7 mi n of Scotts-John Rd and Jonesville Rd jct. Meadow. 1828 Comment
  UC832875  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte summit above Jonesville 2133 Comment
  CHSC31588  Artemisia douglasiana L. Ahart 1977-9-20 1583 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS110297  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SEINET10474107  Artemisia douglasiana Lowell Ahart 1990-10-3 Ahart 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CAS-BOT-BC400632  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SEINET10475949  Asarum hartwegii Mary Susan Taylor 1980-3-8 Taylor 2372 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10580359  Asclepias cordifolia Edwin B. Copel 1929-7-13 Copeland s.n. 1929 Butte Jonesville 1606 Comment
  JEPS118287  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  SBBG128023  Asclepias fascicularis L. Ahart 2011-8-17 17629 Butte ca. 100 yards W of the table at the old homestead and SW of Ten Mi House Rd, upper Bidwell Park, ca. 0.75 mi (air) SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 239 Comment
  SEINET10923199  Asclepias fascicularis R. Carter 1966-7-6 Carter 464 Butte 7 mi E of Oroville on NE corner of intersection of Miners Ranch Road and Mr. Ida Road 244 Comment
  CHSC28669  Asclepias speciosa S. Posner 1972-10-12 Butte Upper Bidwell Park, North bank Chico Creek. Vicinity of Archery Range. Chico. Comment
  HSC96985  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico, along Yahi Trail above Brown's Hole 213 Comment
  CAS-BOT-BC65908  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  UCD111116  Aspidotis densa Christopher Mallek 2008-1 HW3- 23 Butte Magalia. 756 Comment
  SEINET11716730  Aspidotis densa M. S. Taylor 1980-1 2373 A Butte ca 100 ft SW of Pulga bridge over Hwy 70, ca 28 mi NE of Oroville 488 Comment
  SEINET10475264  Aster alpigenus subsp. andersonii Mary Susan Taylor 1978-6-24 Taylor 1667 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET10474124  Aster foliaceus var. parryi Mary Susan Taylor 1975-8-31 Taylor 884 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  SEINET10841188  Astragalus gambelianus Lowell Ahart 1985-5-10 Ahart 4962 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. Comment
  UC625529  Astragalus pauperculus Frank W. Gould 1938-4-23 316 Butte two mi n Chico; n of Chico 60 Comment
  CHSC27997  Asyneuma prenanthoides M. S. Taylor 1978-7-18 1673 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC61635  Asyneuma prenanthoides Lowell Ahart 1993-9-13 7235 Butte On the sides of a dry wash near Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CAS-BOT-BC68690  Athyrium filix-femina var. californicum Lowell Ahart 1983-9-21 4461 Butte 3 miles north of the Sly Creek Dam, north of the Strawberry Valley, along a small stream which is called French Creek 900 Comment
  SEINET11718751  Athyrium filix-femina var. californicum Unknown 1985-1 5149 Butte E of dirt road to Forbestown Res., ca 2.5 mi NE of Forbestown 869 Comment
  CHSC11797  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CHSC4115  Athysanus pusillus R. Carter 1966-3-13 297 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd. in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  CHSC90603  Athysanus pusillus Susan E. Bigbee 1984-3-13 38 Butte Population ca. 50 yds s of Butte Creek and ca. 320 yds w of Covered Bridge, 6.2 mi ese of Chico. 120 Comment
  UC1586519  Atriplex argentea var. mohavensis Lowell Ahart 1991-9-6 6712 Butte about 10 mi se Gridley (on n side of Rutherford Road, about .12 mi w of Pennington Road, w of Parking Area, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area 30 Comment
  UC1586520  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte about 10 mi sw Gridley (s side Rutherford Road, about 1/8 mi w of Pennington Road, s of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 mi sw of Gridley); Gray Lodge Waterfowl Management Area, sw of Gridley 30 Comment
  CHSC34024  Atriplex lentiformis L. Ahart 1981-7-26 3008 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking areas, ca. 1/2 mi ne of the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC45553  Atriplex serenana Lowell Ahart 1977-7-24 1493 Butte On the Gray Lodge Waterfowl Management Area, about 12 miles southwest of Gridley. 30 Comment
  CHSC108796  Aucuba japonica Lowell Ahart 2012-4-6 17807 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CAS-BOT-BC146176  Avena barbata Lowell Ahart 1989-5-23 6233 Butte Near a new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC117592  Avena fatua L. P. Janeway 2016-6-2 12106 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC92513  Avena fatua Lowell Ahart 2005-12-11 12515 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  UC1101613  Azolla microphylla Herbert L. Mason and Verne Grant 1946-8-14 13018 Butte canal near big pond on Sacramento Outing Club Butte Sink Comment
  JEPS119628  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-6-14 18194 Butte About 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  UC600734  Balsamorhiza sagittata H. F. Copeland 1932-6-29 Butte Jonesville 2000 Comment
  SEINET11935024  Bassia hyssopifolia Unknown 1981-1 3222 Butte N side of rd near entrance to Graylodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  CHSC20535  Berberis Pamela Caldwell 1971-10-8 Butte W side of Library. CSUC campus. Comment
  CHSC20533  Berberis aquifolium Pamela Cladwell 1971-10-8 Butte CSUC campus. W side of Library. Comment
  CHSC33716  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-8 3513 Butte W side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of its jct with Hwy 70 at Jarbo Gap. 914 Comment
  SEINET10536480  Berberis dictyota Mary Susan Taylor 1976-4-27 Taylor 1093 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC112541  Bergia texana B. Castro 2012-9-2 1984 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 600 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 57 Comment
  UC1562366  Bergia texana Lowell Ahart 1990-8-15 6578 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. Comment
  CHSC39129  Bistorta bistortoides R. A. Schlising; R. Banchero 1980-6-6 3652 Butte N of Lake Oroville, Bald Rock Road, 1.5 miles s of jct with Oroville-Quincy Highway at Brush Creek. 929 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
  CHSC101976  Blennosperma nanum John Copeland 1980-1-19 4 Butte Bordering vernal pool ca. 50 ft SE of locked gate, 5 mile E of Meridian Rd., 1.5 miles N of Why 99N, ca. 5 miles N of Chico. Comment
  RSA726250  Blennosperma nanum var. nanum R. R. Halse 2002-3-27 6160 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  CAS-BOT-BC100690  Blennosperma nanum var. nanum A. A. Heller 1914-2-16 11180 Butte Hills twelve miles from Chico on the Chico - Oroville Road Comment
  SEINET3149564  Boisduvalia densiflora L. S. Rose 1939-6-11 39276 Butte 6 mi. E of Honcut 137 Comment
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC46318  Bolboschoenus fluviatilis Vernon Oswald 1989-5-15 3767 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In a marshy depression near Butte Creek. 18 Comment
  CHSC66455  Bolboschoenus glaucus Vernon H. Oswald 1996-6-10 7757 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  UC955481  Botrychium multifidum Miss Margaret Hyatt Sep 1914 Butte Jonesville Comment
  CHSC105801  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  POM142188  Boykinia major Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC43742  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  SEINET10448437  Brassica geniculata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4689 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  CDA31946  Brassica napus L. Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Comment
  CHSC37451  Brassica nigra L. Ahart 1982-5-29 3449 Butte In a field, n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  CHSC109615  Briza minor Lowell Ahart 2012-5-17 18082 Butte On the north edge of Big Chico Creek, southeast of Table 21, south of the paved park road, northeast of the Deer Pen, Lower Bidwell Park, Chico. 73 Comment
  SEINET10514397  Briza minor A. Arthur Heller 1913-5-25 Heller 10762 Butte Near Pents. 152 Comment
  SEINET10514411  Briza minor Lowell Ahart 1971-4-13 Ahart 72 Butte Ca. 1/2 typical size. Among grass and on disturbed areas. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  SEINET10472609  Brodiaea californica Lowell Ahart 1983-6-15 Ahart 4053 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  CAS-BOT-BC482214  Brodiaea californica subsp. californica W. I. Follett; E. B. Follett 1963-5-19 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  UCD77145  Brodiaea coronaria Robert E. Preston 2003-5-11 2134 Butte Chico, Upper Bidwell Park, ca. 0.2 mi NE of jct Wildwood Ave. and Upper Park Rd 83 Comment
  SEINET10932597  Brodiaea coronaria Mrs. R. M. Austin Austin 27 A Butte Iron Canyon Comment
  CHSC2075  Brodiaea elegans M. Roberson 1956-5-28 Butte Near Paradise, along Skyway. 426 Comment
  SEINET3884962  Brodiaea hyacinthina var. greenei D. W. McNeal 1989-4-18 3372 Butte On Table Mtn., just w. of Cherokee Rd., 6.4 mi. s. of the jct. of Hwy #70 n. of Oroville.; 0 Comment
  POM169625  Brodiaea minor A. A. Heller, H. E. Brown 1902-5-10 5524 Butte Berry Canyon (Near Clear Creek). Comment
  UC203644  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte about 5 mi sw Pentz Comment
  CAS-BOT-BC484505  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  UC501524  Brodiaea minor Frank W. Peirson 1926-6-21 6767 Butte Humboldt Road Butte Meadows Comment
  UC1075908  Brodiaea nana E. K. Balls and L. W. Lenz 1955-5-13 20483 Butte 10.8 mi n Oroville (on road to Paradise) 121 Comment
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CAS-BOT-BC148837  Bromus carinatus var. marginatus Lowell Ahart 1984-6-10 4706 Butte Along the edge of the dirt road, about 2 miles southwest of the Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC6175  Bromus catharticus J. Wheeler 1968-4-21 330 Butte N side of Bidwell Mansion, Chico. 59 Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  CHSC26444  Bromus diandrus P. Moyer 1972-4-9 165 Butte CSUC Campus. North bank of Chico Ck., w of Warner St. Bridge. 60 Comment
  CHSC31416  Bromus diandrus L. Orme 1980-3-15 5 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of field. 55 Comment
  CHSC4369  Bromus diandrus M. Hillier 1966-5-30 Butte By creek at s end of Park Ave., Chico. Comment
  UCD58519  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  SEINET11683503  Bromus hordeaceus Unknown 1974-1 42 Butte ca 50 ft from intersection of East Ave. & Mariposa Ave. on NE side of Mariposa Ave., Chico 61 Comment
  CHSC97036  Bromus inermis subsp. inermis L. P. Janeway 2007-7-16 9118 Butte Northern High Sierra Nevada. Plumas National Forest; south of Road 21N25 in the southeastern corner of Watson Ridge, 0.7 km north of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1125 Comment
  CHSC117543  Bromus japonicus Lowell Ahart; John Dittes 2016-7-13 21144 Butte Scattered along the west edge of the pond, 100 yards south of County Road A02, 5.3 miles (air) east of Biebedr, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC96861  Bromus japonicus Lowell Ahart 2007-6-3 13976 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS113794  Bromus laevipes Lowell Ahart 2007-6-3 13969 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  CAS-BOT-BC162364  Bromus madritensis John Thomas Howell 1961-9-22 36782 Butte Sierra Nevada. Jarbo Gap, Feather River Highway. Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC1131196  Bromus madritensis subsp. rubens C. G. Albertus 1933-5-29 9 Butte 1 1/2 mi n of Wick Comment
  CHSC61533  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte On the east side of the dirt road, about 1 mile west of Lost Creek Reservoir. 1188 Comment
  UCR266717  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC161964  Bromus rubens Lowell Ahart 1987-5-6 5553 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC49523  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1987-8-5 3183 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  CHSC35748  Bromus tectorum R. E. Preston 1982-5-18 283 Butte Roadside. Forbestown Diversion Dam. 548 Comment
  CHSC42861  Bromus tectorum Lowell Ahart 1987-5-6 5552 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD59867  Bromus tectorum L. Ahart 1982-6-4 3531 Butte 1.5 miles E of Camp 18, ca. 0.8 mi. E of Feather Falls. 1000 Comment
  SEINET10843220  Bromus villosus A. Arthur Heller 1914-4-11 Heller 11280 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC185535  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC60865  Bromus vulgaris Vernon H. Oswald; Lowell Ahart 1993-6-22 5562 Butte Long Ravine W of Stirling City, along the road in the ravine just N of the Diversion Dam for Hendricks Canal. 960 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
  CHSC46457  Calandrinia ciliata V. Oswald; L. Ahart 1989-6-27 3835 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In a large meadow along Butte Creek. 1767 Comment
  SEINET10939584  Callitriche heterophylla subsp. bolanderi Mary Susan Taylor 1984-4-6 Taylor 5403 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  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
  CAS-BOT-BC80354  Calocedrus decurrens John Thomas Howell 1962-6-15 37433 Butte Magalia 731 Comment
  CHSC29786  Calocedrus decurrens M. S. Taylor 1980-5-27 2698 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC90238  Calocedrus decurrens Eric M. Haney 1989-4-23 15 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  SEINET10531070  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  UC203864  Calochortus albus A. A. Heller 1914-5-8 11375 Butte above Clear Creek (on the Paradise road) Comment
  UCD80423  Calochortus luteus CNPS SN Foothill Team 2005-5-4 SNFN 0201 a Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  CAS-BOT-BC491853  Calochortus luteus E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC24782  Calochortus monophyllus D. E. Hale 1976-4-10 15 Butte On n side of Vilas Rd, ca. 25 m e of Vilas Rd - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  POM109674  Calochortus monophyllus Mrs. R. M. Austin 1883-05 14 Butte Little Chico Creek Comment
  SEINET12046806  Calochortus monophyllus Unknown 1978-1 34 Butte ca 100 ft from S side of Butte Creek, ca 7 mi E of Chico at Covered Bridge 518 Comment
  UC600461  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville 1524 Comment
  CAS-BOT-BC493083  Calochortus nudus Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC111124  Calochortus superbus Lowell Ahart 2012-5-12 18035 Butte On the west side of South Rim Trail, north of Bloody Pin Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7 3/8 miles (air) northeast of Chico. 236 Comment
  JEPS116094  Calochortus superbus Lowell Ahart 2009-5-15 15680 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  CHSC51252  Calycadenia ciliosa Lowell Ahart; Mary Sue Taylor 1990-8-28 6595 Butte On the south side of Highway 32, about 3 miles east of Chico. 182 Comment
  RSA300139  Calycadenia hispida L. Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut 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
  CHSC37503  Calycadenia oppositifolia J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1678 Butte Table Mountain. Ca. 150 meters due north of Phantom Falls (W edge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  CHSC44061  Calycadenia oppositifolia L. P. Janeway 1988-5-29 2701 Butte Low in cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 243 Comment
  CHSC75901  Calycadenia oppositifolia G. F. Hrusa; T. D. Wilfred 1997-7-3 13989 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 725 Comment
  UC1876183  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  UC1876185  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  UCD129783  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  UCD129785  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mile west of Paradise. South side of Chico-Paradise Hwy. Comment
  CAS-BOT-BC270887  Calycadenia spicata L. P. Janeway; B. Castro; R. A. Schlising 1992-5-17 4188 Butte Unnamed canyon on the SE side of Neal Road opposite the upper part of the Butte County Land Fill, ca. 1.5 miles NE of Highway 99 76 Comment
  CHSC27559  Calycadenia truncata Robert A. Schlising 1977-10-9 3207 Butte NE of Chico on Cohasset Road, 3.0 mi NE of jct road to Richardson Springs and 3.3 mi NE crossing of Mud Creek. Comment
  JEPS115867  Calycadenia truncata Lowell Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  UC1953745  Calycadenia truncata R. L. Carr 1986-10-3 2266 Butte NE of Oroville, Olive Hwy (162, Oroville-Quincy Road), 3.6 mi NE of Forbestown Rd, ca. 0.5 mi N of Bidwell Bar Bridge Comment
  CAS-BOT-BC275418  Calycadenia truncata var. truncata Lewis S. Rose 1939-6-7 39250 Butte N Fork of Feather River, 3 miles S of Pulga 609 Comment
  CAS-BOT-BC90924  Calycanthus occidentalis A. A. Heller 1915-5-17 11874 Butte Canon [Canyon] of Chico Creek 5 miles east of Chico. Comment
  CHSC9702  Calyptridium monospermum Nancy Mosman 1971-7-3 61 Butte In meadow along Hwy 32 ca. 0.3 mi n of Butte Meadow Ranger Station. 1371 Comment
  JEPS121940  Calyptridium monospermum Lowell Ahart 2014-7-7 19604 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  HSC103793  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road, ~ 0.5 km. SW of Anderson Mill site, and ~5.9 air km. NNE of Cohasset. 1128 Comment
  HSC103795  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km. N of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. 847 Comment
  HSC103802  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road, 3.1 km. NNE of Schott Road. 860 Comment
  CHSC82490  Calystegia occidentalis subsp. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9734 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC34978  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1974-6-5 3138 Butte 9.9 mi NE of Chico along Hwy 32. 512 Comment
  CHSC46226  Camassia quamash subsp. quamash Pauleen Broyles 1987-6-26 1061 Butte Ca 2.0 km s. of Inskip on w. side of Skyway. 1400 Comment
  CHSC101274  Capsella bursa-pastoris Lowell Ahart 2009-4-3 15526 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC112203  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC113235  Capsella bursa-pastoris Lowell Ahart 2014-4-26 19418 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC19927  Capsella bursa-pastoris M. S. Taylor 1975-3-3 399 Butte Ca. 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 60 Comment
  JEPS103413  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  CAS-BOT-BC37884  Cardamine oligosperma Lowell Ahart 1983-3-24 3910 Butte Sutter Buttes. East bank of Woodleaf Creek above road, about 0.375 mile southwest of the Forbestown Reservoir. 450 Comment
  CHSC10645  Cardamine oligosperma Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4152  Cardamine oligosperma R. Carter 1966-4-2 322 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC47382  Cardamine oligosperma Lowell Ahart 1973-3-14 175 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC61208  Cardamine oligosperma Vernon H. Oswald; Lowell Ahart 1993-3-24 5246 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  SEINET10448554  Cardamine oligosperma Mary Susan Taylor 1975-4-26 Taylor 521 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET11991665  Cardamine oligosperma M. C. Earley 1982-1 12 Butte ca 11 mi ESE of Chico 112 Comment
  CAS-BOT-BC18210  Carex Lowell Ahart 1988-4-15 5960 Butte In the lawn, Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET260322  Carex Lowell Ahart 1988-4-15 5960 Butte P. Ahart Ranch ca 1.5 mi N and 1 mi E of Honcut ca 12 mi S of Oroville 37 Comment
  CHSC59008  Carex abrupta Lowell Ahart 1992-7-26 6849 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 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
  JEPS121932  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS121933  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  NY25690  Carex amplifolia H. M. Hall 1914-7-25 9782 Butte Jonesville 1554.5 Comment
  UC600700  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville 1524 Comment
  POM183139  Carex aurea H. F. Copeland 1929-6-11 1243 Butte Jonesville. 1524 Comment
  OBI69227  Carex barbarae Kari Fisher 2000-11-10 45 Butte Chico State Campus, along Big Chico Crk 79 Comment
  SEINET7551515 Image available Carex barbarae Unknown 2004-8-7 8242 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; about 12 m north of Big Chico Creek and about 7 m higher; between Upper Park Road and Yahi Trail; between Day Camp and the Power Lines. Richardson Springs 7.5' quad. 93 Comment
  SEINET10653008  Carex barbarae Lewis S. Rose 1939-6-5 Rose 39199 Butte Honcut. 30 Comment
  CHSC102594  Carex bolanderi L. P. Janeway; B. Castro 2009-7-4 9835 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary of North Fork Feather River). 823 Comment
  CHSC103133  Carex bolanderi Lowell Ahart 2009-5-30 15790 Butte Along a small stream about 20 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC52264  Carex bolanderi L. P. Janeway 1988-6-14 2764 Butte NW side of canyon of West Branch Butte Creek; 1.1 mi E of Hwy 32 along road to Ewalt Camp. 944 Comment
  CHSC52269  Carex bolanderi L. P. Janeway 1987-5-20 2086 Butte Canyon of North Fork Feather River; seep along Hwy 70, 0.3 mi N of Arch Rock Tunnel. 472 Comment
  CAS-BOT-BC19414  Carex bolanderi L. P. Janeway 1987-6-20 2258 Butte North Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge. 975 Comment
  CHSC107569  Carex cyrtostachya Lowell Ahart 2011-8-19 17635 Butte On the south side of a good forest road, on the east side of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1252 Comment
  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
  CHSC82908  Carex cyrtostachya L. P. Janeway; B. Castro 2002-7-28 7689 Butte Northern High Sierra Nevada. Northwest side of Lumpkin Ridge Road 1.1 km southwest of junction with the road to Cascade; upper west branch of Know-Nothing Creek; 2.1 km south of top of Quartz Hill. 1231 Comment
  JEPS94721  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte about 3/4 mi nw of Lost Creek Dam (about 1/2 mi nw of the Lost Creek Reservoir, on n side of the dirt road) 1021 Comment
  UCR246351  Carex cyrtostachya Peter F. Zika, Barbara L. Wilson, L. Ahart, L. P. Janeway 2011-8-5 25715 Butte Northern Sierra Nevada Highlands (n SNH), Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage 1075 Comment
  UC1108994  Carex echinata subsp. echinata H. F. Copeland 1932-7-17 Butte vicinity Jonesville; Lassen National Forest 1500 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
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  UCD140310  Carex feta L. P. Janeway 1987-6-13 2187 Butte at the Crain Mill site, 1.6 miles north on Ponderosa Way (Rim Road) from Jarbo Gap. 883 Comment
  CHSC44292  Carex fracta Vernon Oswald 1988-6-20 3408 Butte East of Humboldt Rd. 1.4 mi ne of Lomo. Along the edge of the W. Branch of Butte Creek at the bottom of a ravine. 1292 Comment
  JEPS121929  Carex fracta Lowell Ahart 2014-7-16 19678 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS87706  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte about 2 1/2 mi n and 2 3/4 mi e Honcut (on the w side of North Honcut Creek, about 12 mi se of Oroville); North Honcut Creek 54 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  RSA754885  Carex gracilior L. Ahart 2009-6-18 15911 Butte 60 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  SEINET10855729  Carex gracilior Lowell Ahart 1982-5-28 Ahart 3441 Butte On dry rocky soil and under oak trees near North Honcut Creek, n of Peter Ahart Ranch, 3 mi ne of Honcut. Foothill Woodland. 50 Comment
  UC1609014  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte on n side of ridge about 1 mi e Snow Mountain 2072 Comment
  SEINET4286005 Image available Carex integra L. Janeway, Gog, L 2008-1 3184 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  JEPS116639  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Oroville Sacramento Valley (south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum.) 44 Comment
  SEINET10713179  Carex laeviculmis A. Arthur Heller 1913-6-7 Heller 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC88156  Carex lemmonii Lowell Ahart 2004-7-23 11296 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  SEINET7899367 Image available Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville Comment
  SEINET12649605 Image available Carex mesochorea Lowell Ahart 2010-1 16579 Butte 64 Comment
  CHSC9145  Carex multicaulis R. J. Swift 1970-4-21 85 Butte Alongside of Skyway ca. 1.5 miles N.E. of Magalia. 670 Comment
  SEINET7568447 Image available Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Kimshew Point 7.5' quad. Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  CAS-BOT-BC119743  Carex nebrascensis L. P. Janeway 1987-7-4 2411 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC88941  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8244 Butte High Cascade Range. Meadow along southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC52249  Carex nudata L. P. Janeway 1988-4-10 2613 Butte Along Little Chico Creek ca 1/2 mi east of Bruce Road. 85 Comment
  CDA2572  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC48557  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3137 Butte The ridge SE from Snow Mtn. N edge of ridgetop. 2103 Comment
  CAS-BOT-BC117985  Carex rossii L. P. Janeway; Robert A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2996 Butte Kimshew Point quad. At Crane Valley (upper Big Kimshew Cr). 1569 Comment
  SEINET10709381  Carex rossii Lawrence P. Janeway 1988-7-30 Janeway 3137 Butte T25N, R5E, Jonesville quad (15') NW 1/4 of sec. The ridge SE from Snow Mtn. N edge of ridgetop red fir forest and pine-mat manzanita chaparral. 2103 Comment
  CHSC44946  Carex simulata L. P. Janeway 1988-7-29 3125 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC52871  Carex straminiformis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3138 Butte Ridge SE from Snow Mtn. Along N-facing ridgetop. 2103 Comment
  CAS-BOT-BC116737  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CHSC45071  Carex subfusca Vernon Oswald 1987-5-12 2391 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. On the edge of Butte Creek. 80 Comment
  SEINET8574039 Image available Carex subfusca L. Janeway, Castro, B 2009-1 9836 Butte Comment
  UCD141168  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-22 3075 Butte just above the High Lakes Road 3.4 miles west of the pass. 1905 Comment
  SEINET11635243  Carex texensis L. P. Janeway 1989-1 3270 Butte Campus of California State University, Chico, N side of Big Chico Cr opposite Holt Hall 58 Comment
  UC203660  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows 1219 Comment
  CAS-BOT-BC115067  Carex vesicaria L. P. Janeway 1988-7-29 3132 Butte Meadow near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC52359  Carex vesicaria L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2512 Butte Southernmost pond on the slopes on south side of Coon Hollow. On rocky bed of nearby vernal pool. 1767 Comment
  JEPS121792  Carex xerophila L. P. Janeway 2006-5-14 8595 Butte Northern High Sierra Nevada. Magalia Serpentine; east side of Coutolenc Road, between that road and the first bend in the road down to the Magalia 73 Dam. Comment
  CAS-BOT-BC249117  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC78101  Castilleja affinis subsp. affinis Caleb E. Casey 1999-4-9 Butte South rim trail. Upper Bidwell Park one half mile before Bear hole. 106 Comment
  JEPS81862  Castilleja affinis subsp. affinis L. R. Heckard with J. C. Hickman and R. C. Bacigalupi 1982-5-11 5849 Butte about 10 mi e Oroville (along Olive Highway, 0.3 mi w of Forbestown Road) Comment
  CAS-BOT-BC249595  Castilleja applegatei subsp. pinetorum Clarence R. Quick 1952-7-1 52 -131 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC115315  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20051 Butte On the south side of the road to the Forbestown Reservoir, about 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 669 Comment
  CHSC34079  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  POM319349  Castilleja applegatei subsp. pinetorum Patricia Wilder 1971-6-23 5184 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  SD4822  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 Butte Jonesville 1750 Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  SEINET10549340  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-4-5 Taylor 3484 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
  CAS-BOT-BC255469  Castilleja applegatei var. pinetorum John Thomas Howell 1955-6-14 30445 Butte Magalia, Sierra Nevada 731 Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  HSC32626  Castilleja attenuata Linda M. Barker 1974-4-20 155 Butte Table Mtn., Central Valley 305 Comment
  RSA0058982  Castilleja attenuata Lowell A. Ahart 2012-4-17 17875 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  SBBG128864  Castilleja attenuata G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 Butte Cox Lane, 1.3 mi W of its intersection with La Loma Way, ca. 10.3 mi ENE (82 deg ) of Gridley 91 Comment
  CHSC3454  Castilleja exserta Judy Potter 1966-3-28 Butte South of Chico where Butte Creek crosses US 99. Comment
  JEPS80632  Castilleja lacera M. S. Taylor 1980-5-15 2624 Butte ca 0.25 mi e Cohasset Rd. (ca 9 mi ne of Chico); Cohasset Ridge 396 Comment
  CAS-BOT-BC241128  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  UC885346  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  SEINET7072993  Castilleja rubicundula subsp. lithospermoides A. G. Vestal 1963-5-30 s.n. Butte About 15 miles east of Forbestown on the Forebestown Road. UTM Zone 10, 650845mE, 4376263mN. Coordinate datum: NAD27). Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 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
  CHSC58960  Castilleja tenuis Lowell Ahart 1992-7-29 6883 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC195581  Catapodium rigidum Lowell Ahart 1976-7-4 s.n. Butte North Honcut Creek about 2 miles ne. of Honcut Comment
  CAS-BOT-BC56923  Ceanothus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada. 5 mi. below Magalia on Oroville Road 609 Comment
  RSA129723  Ceanothus cordulatus P. L. Johannsen 1936-7-17 934 Butte 2.5 miles SSE of Butte Meadow, Pymes Creek. 1555 Comment
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC3277  Ceanothus integerrimus M. L. Hillier 1966-5-9 Butte In small open field along rd. side 6.8 miles n.e. of the Skyway on Humbug rd. Comment
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  RSA21540  Ceanothus integerrimus Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  UC80025  Ceanothus integerrimus R. M. Austin April 1896 127 Butte Chico Creek Comment
  CHSC45726  Ceanothus integerrimus var. californicus Richard Steward 1988-4-25 9 Butte Ca. 6 mi n, 1.8 mi nw of Paradise. 640 Comment
  CAS-BOT-BC50713  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1980-9-10 2645 Butte Sierra Nevada - 7 miles east of Milsap Bar 1200 Comment
  RSA301112  Ceanothus integerrimus var. macrothyrsus D. C. Michener 1982-7-28 4138 Butte Foothill woodland on volcanic soils on both sides of 32, 8.3 miles NE of jct with 99 near Chico. Comment
  CHSC86136  Ceanothus parvifolius John Dittes 2002-6-29 624 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 slope above FS access road. 1255 Comment
  CAS-BOT-BC51999  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  SEINET10493651  Ceanothus prostratus Mary Susan Taylor 1976-4-4 Taylor 1057 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  UC79907  Ceanothus velutinus Mrs. R. M. Austin July, 1896 757 Butte Colby Comment
  RSA0035337  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18022 Butte On the north side of Big Chico Creek, south of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC282002  Centaurea calcitrapa J. D. Jokerst 1985-6-17 2746 Butte Along the intermittent creek draining Box Hall Flat, between Lake Oroville and Potters Ravine 518 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
  CAS-BOT-BC277028  Centaurea maculosa T. C. Fuller 1971-8-18 19925 Butte North side of overlook parking lot, Oroville Dam, 7 mi. east of Oroville 289 Comment
  JEPS98599  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  UCD130097  Centaurea solstitialis G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CHSC50401  Centaurea stoebe subsp. micranthos Vernon Oswald 1990-6-27 4335 Butte Hwy 149 at Gold Run Creek, between Oroville Y on Hwy 99 and Wicks Corner on Hwy 70. Edge of road. 71 Comment
  CHSC20488  Centaurium tenuiflorum M. S. Taylor 1975-6-25 793 Butte Ca. 100 ft w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  JEPS114730  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  RSA715892  Cerastium glomeratum L. Ahart 2005-4-14 11715 -A Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC46613  Ceratophyllum demersum Vernon Oswald 1989-8-1 3910 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In Little Dry Creek at the bridge ca. 1 mi n of Gridley-Colusa Hwy. 18 Comment
  CAS-BOT-BC179535  Cercis occidentalis Ahart Lowell 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UC15107  Cercis occidentalis unknown 380 Butte Chico Comment
  UC478465  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 692 Butte Jonesville Comment
  CHSC87207  Chamaemelum fuscatum Lowell Ahart 2004-4-10 10732 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  CDA42979  Chamaesyce maculata L. Ahart 2013-11-29 19290 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. Comment
  CHSC102511  Chamaesyce maculata Lowell Ahart 2009-8-13 16272 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  JEPS113492  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  CHSC37373  Chamaesyce ocellata R. A. Schlising 1981-9-20 4196 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
  UC869161  Chamaesyce ocellata A. A. Heller 1916-9-5 12645 Butte 8 mi n Oroville (in hills) Comment
  CDA35251  Chamaesyce ocellata T. C. Fuller 1962-6-11 8948 Butte Northwest corner of Pentz Rd. and Hwy 99E to Biggs, 9.4 miles southeast of Chico. 0 Comment
  CHSC102401  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC69450  Cheilanthes gracillima H. W. Hallins 1914-7-1 9806 Butte Jonesville. 1737 Comment
  CHSC60940  Cheilanthes gracillima Lowell Ahart 1993-6-26 7039 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC113945  Chenopodium album Lowell Ahart 2014-8-13 19698 Butte About 10 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  JEPS108955  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 2006-9-11 13281 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC42961  Chenopodium berlandieri Lowell Ahart 1987-7-3 5761 Butte On the gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CDA7111  Chenopodium botrys L. Ahart 2006-10-8 13438 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
  CHSC117324  Chenopodium pratericola B. Castro; Melinda Carlson 2007-10-25 1682 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek adjacent to surrounding riparian forest. Arroyo Chico land grant area. 36 Comment
  CAS-BOT-BC451486  Chimaphila umbellata Kate E. Conger 1907-1-1 18 Butte Brush Creek Comment
  CHSC82642  Chondrilla juncea Lowell Ahart 2002-7-18 9875 Butte On the west edge of Lumpkin Road, about 1/8 mile south of the Enterprise Bridge across Lake Oroville, about 11 1/2 miles (air) northeast of Oroville. Comment
  CHSC99754  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  CHSC103750  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-16 16705 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 381 Comment
  CHSC27930  Chorizanthe polygonoides var. polygonoides M. S. Taylor; J. T. Howell 1975-4-26 510 Butte Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  CHSC94048  Chorizanthe polygonoides var. polygonoides R. D. Fischer 2005-5-18 722 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. 426 Comment
  CHSC97362  Chorizanthe polygonoides var. polygonoides Paul Maslin 2005-5-1 58 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  UC370341  Chorizanthe pungens var. pungens C. C. Parry 1883-1 Butte Chico Comment
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  UC478533  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  CHSC39935  Cicendia quadrangularis M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5398 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS115351  Cichorium intybus Lowell Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC184835  Cinna latifolia Vernon Oswald; Lowell Ahart 1987-8-5 3192 Butte Scotts John Creek 1.3 mile north of the road connecting Humboldt and Humbug roads. 1813 Comment
  JEPS71174  Cinna latifolia A. L. Hormay 1929-7-20 Butte (10 mi se) Butte Meadows; se <of> Butte Meadows Comment
  SEINET5507043 Image available Cirsium andersonii H. F. Copeland 1924-8-11 n.s. Butte Jonesville 1524 Comment
  CHSC94463  Cirsium douglasii var. breweri Lowell Ahart 2006-8-15 13188 Butte East part of a large meadow with bogs, 15 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CAS-BOT-BC288041  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  CHSC111407  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte On the north side of the paved park road, about 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC51362  Citrullus colocynthis var. lanatus Vernon Oswald; Lowell Ahart 1990-10-11 4458 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. 259 Comment
  RSA0059982  Clarkia arcuata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  SEINET12193694  Clarkia arcuata T. A. Barrett 1976-1 10 Butte 13.7 km E of Chico, N side of the Skyway 500 Comment
  RSA337386  Clarkia biloba subsp. brandegeeae L. Ahart 1984-6-8 4658 Butte Along Ponderosa Way, 1/8 mile W of Ponderosa Dam, 2 miles NW ofForbestown 370 Comment
  JEPS115984  Clarkia gracilis subsp. albicaulis Lowell Ahart 2009-6-3 15823 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  RSA699539  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-4-17 170 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on edge of 10 Mile House Road at roads closest point to Big Chico Creek. 216 Comment
  CAS-BOT-BC27107  Clarkia mildrediae Amos Arthur Heller 1938-7-2 15153 Butte On the Feather River Highway, 2 mi W of Arch Rock Tunnel. Comment
  CDA13339  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada; Approx. 0.5 m. on USFS 22N89. Immed. S of Rogers Cow Camp on Hwy 162. 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
  LA206073  Clarkia mildrediae subsp. mildrediae Harlan Lewis; M. Lewis, Frank C. Vasek 1950-6-30 760 Butte Hwy 24, 2.0 mi S of Arch Rock on Feather River Comment
  JEPS102944  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. Burned area 655 Comment
  CHSC81384  Clarkia purpurea Samantha Hillaire 2001-5-16 303 Butte Vicinity of Ponderosa Way, about 0.3 mi southeast of Big Chico Creek; UTM 10 611784E 4415729N. On a steep roadcut of a little-used dirt road, on a SW exposure. 353 Comment
  RSA31284  Clarkia purpurea subsp. quadrivulnera H. C. Cantelow 1940-5-10 s.n. Butte 8.5 miles SW of Oroville, Highway 24 Comment
  SEINET10906911  Clarkia purpurea subsp. quadrivulnera Heidi H. Schmidt 1993-6-15 Schmidt 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  SEINET10939936  Clarkia purpurea subsp. quadrivulnera Mary Susan Taylor 1978-5-7 Taylor 1612 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC172381  Clarkia purpurea subsp. viminea Lowell Ahart 1984-5-28 4650 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  RSA448333  Clarkia rhomboidea L. Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  SEINET10939937  Clarkia rhomboidea Mary Susan Taylor 1978-6-24 Taylor 1642 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  UCD104980  Clarkia rhomboidea L. Ahart 1983-6-26 4118 Butte About 15 miles NE of Oroville, about 2 miles SE of intersection of the Oroville/Quincy Highway and Ponderosa Way. 500 Comment
  SEINET10689282  Clarkia stellata Robert A. Schlising 1980-5-26 Schlising 3601 Butte Several miles sw village of Cohasset, along fireroad in chaparral e of Cohasset Road, T23N, R2E, sec 8; elevation ca 1350 feet; on shaded banks, among Quercus dumosa, Ceanothus integerrimus, Arctostaphylos viscida, A. mewukka, Rhus trilobata, Heteromeles arbutifolia. 405 Comment
  CAS-BOT-BC165439  Clarkia unguiculata L. P. Janeway 1991-6-1 3986 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  CAS-BOT-BC165444  Clarkia unguiculata Lowell Ahart 1983-6-30 4170 Butte Along old Highway 40, near the rest area, and near where the road runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  CHSC1117  Clarkia xantiana J. Wakeman 1963-5-18 Butte In College Greenhouse. 57 Comment
  SFV14448  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville. South bank of Jones Creek. 0.4 km east of the Jonesville Hotel. 1550 Comment
  CHSC34703  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-8 2608 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  RSA325089  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-5 3493 Butte Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi. s of Big Bend Rds., ca. 5 s of Jarbo Gap on Hwy 70, n of Oroville. 305 Comment
  RSA718341  Claytonia perfoliata L. Ahart 2006-5-8 12596 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  CAS-BOT-BC439753  Claytonia perfoliata Lowell Ahart 1981-4-9 2756 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC19934  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1975-3-10 380 Butte Abundant on s side of Butte Creek, ca. 30 ft s of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC30356  Claytonia perfoliata subsp. perfoliata J. D. Jokerst 1979-3-5 1139 Butte Top of North Table Mt., 300 m NW of the intersection of Cherokee Rd and the E edge of section 17. Comment
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CHSC38630  Claytonia perfoliata subsp. perfoliata Vernon Oswald 1983-2-19 87 Butte Upper Bidwell Park, Chico, beside the North Rim Trail 1.4 mi e of the power lines. 353 Comment
  CAS-BOT-BC440033  Claytonia perfoliata subsp. perfoliata A. A. Heller 1920-4-10 13361 Butte New high school grounds at Chico Comment
  SEINET10830266  Claytonia rubra Mary Susan Taylor 1981-4-27 Taylor 3557 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC32135  Claytonia rubra subsp. rubra L. Ahart 1977-3-28 1228 Butte Near North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC116963  Clematis lasiantha Matthew Forster 2013-5-1 Butte Hwy 32 off 14 Mile House Rd. 472 Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  CHSC84381  Clematis lasiantha Vernon Oswald 1983-4-1 251 Butte Upper Bidwell Park, Chico beside the South Rim Trail ca. 1000 ft w of the power lines. 134 Comment
  CHSC84640  Clematis lasiantha Matt Quinn 2001-4-4 8 Butte On mid-slope of north facing slope of Honey Run Creek. Approximately 1/2 mile upstream of confluence with Little Butte Creek, 200 feet upslope from creek. 198 Comment
  SEINET10536025  Clematis lasiantha Mary Susan Taylor 1975-4-25 Taylor 491 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  SEINET194862  Cogswellia marginata A. A. Heller 1941-4-16 16065 Butte Along US highway 99E 4 miles north of Biggs. Comment
  CHSC90180  Collinsia heterophylla M. K. Hancharick 1989-4-18 17 Butte End of Centennial Ave., vic. gate at s end of Fern Banks, se corner Bidwell Park, s bank of Big Chico Creek. 88 Comment
  UC103389  Collinsia heterophylla Mrs. R. M. Austin Apr 1896 125 Butte Little Chico Creek Comment
  CHSC43756  Collinsia parviflora Vernon Oswald; Lowell Ahart 1987-6-10 2982 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Hunbug Rd. 1874 Comment
  SEINET10548309  Collinsia sparsiflora var. bruceae Lowell Ahart 1984-4-3 Ahart 4537 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC46087  Collinsia sparsiflora var. collina Lowell Ahart 1989-3-25 6198 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 miles north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  JEPS94771  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC726287  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville; Feather River Highway Comment
  CHSC28010  Collomia heterophylla M. S. Taylor 1978-7-21 1803 Butte On both sides of Quincy-Oroville Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CAS-BOT-BC180251  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  CAS-BOT-BC180256  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 4983 Butte E along the dirt road, about 1/2 mile NE of Concow Res. 650 Comment
  CHSC42577  Conium maculatum Vernon Oswald 1983-6-28 781 Butte Along roadways at Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  CAS-BOT-BC286060  Conyza canadensis John Thomas Howell 1961-9-22 36732 Butte Bank of Feather River, Oroville 53 Comment
  CHSC33797  Corallorhiza maculata M. S. Taylor; L. Hanson, H. Phillips 1981-5-27 3804 Butte W side of Paradise lake, ca. half way between Butte Creek entrance to the north and dam to the south, ca. 50 ft up from lake edge, ca. 3 air mi n of Magalia. 792 Comment
  RSA0084710  Cordylanthus pilosus subsp. hansenii L. Ahart 2009-6-30 15973 Butte E side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC51013  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  UC1562384  Cordylanthus tenuis subsp. tenuis Lowell Ahart 1990-8-15 6589 Butte about 1/2 mi nw Enterprise Bridge across Lake Oroville (on e side of Enterprise Boat Launch parking area) 335 Comment
  CHSC31655  Cornus sericea subsp. occidentalis L. Ahart 1977-5-20 1386 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  POM77766  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Lomo Comment
  SD1899  Corydalis caseana E. B. Copeland 1929-7-3 Butte Comment
  CAS-BOT-BC401855  Corydalis caseana subsp. caseana Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC84025  Cotula coronopifolia Lowell Ahart 2003-6-23 10310 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
  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
  CHSC33256  Crassula aquatica R. A. Schlising 1980-3-23 3524 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC100971  Crassula connata L. P. Janeway 2008-3-18 9238 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  UCD80239  Crassula connata CNPS SN Foothill Team 2005-4-14 SNFN 0034 c Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  JEPS107416  Crassula tillaea Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11662 Butte Big Chico Creek Ecological Reserve. 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
  JEPS120955  Crassula tillaea Lowell Ahart 2013-4-20 18559 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC113528  Crypsis schoenoides Lowell Ahart 2014-9-23 19874 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  POM266636  Crypsis vaginiflora J. C. Roos 1939-7-3 1521 Butte a few miles southeast of Chico Comment
  CHSC40752  Cryptantha affinis Lowell Ahart 1985-6-17 5067 Butte Lumpkin Ridge, 30 yards south of the dirt road, 1-/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC46748  Cryptantha affinis Lowell Ahart 1984-6-10 4708 Butte On the road cutbank, about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown. 640 Comment
  CHSC60965  Cryptantha affinis Lowell Ahart 1993-6-26 7018 Butte On the east side of the dirt road, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC97409  Cryptantha affinis Robert Fischer 2006-6-17 1028 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1493 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
  UC1594584  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 Comment
  UCR64631  Cryptantha affinis H. F. Copeland 1930-7-20 1386 Butte Jonesville 1524 Comment
  SEINET10497259  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4724 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
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  SBBG63701  Cryptantha glomeriflora M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  SEINET10497601  Cryptantha hendersonii Mary Susan Taylor 1982-5-2 Taylor 4397 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  CHSC29969  Cryptantha torreyana R. A. Schlising; S. Azevedo 1980-6-13 3704 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 on Garland Road, near jct with Doe Mill Rd and Ponderosa Way. 902 Comment
  CHSC35069  Cryptantha torreyana R. A. Schlising 1981-7-14 4149 Butte NE part of county, near Humbug Summit, at Willow Creek and Meadow. 1950 Comment
  CHSC45268  Cucurbita foetidissima Vernon Oswald 1984-8-20 1652 Butte Midway Rd. at Butte Creek s of Durham. 45 Comment
  RSA17598  Cupressus macnabiana C. B. Wolf, E. R. Johnson 1934-10-5 6160 Butte Magalia, Sierra Foothills 701 Comment
  SEINET10531478  Cupressus macnabiana Lowell Ahart 1985-6-30 Ahart 5094 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET11739306  Cupressus macnabiana Unknown 1979-1 8 Butte 0.5 mi N of Magalia on coutelenc, 100 ft. E of Skyway 732 Comment
  CHSC55055  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  CHSC47406  Cuscuta howelliana Lowell Ahart 1980-6-15 2373 Butte About 2-1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC45555  Cycloloma atriplicifolium Lowell Ahart 1981-9-26 3201 Butte Growing on a sandbar along the Sacramento River, about 6 miles west of Chico. 36 Comment
  CHSC30992  Cymopterus terebinthinus var. californicus M. S. Taylor; R. Schlising 1980-7-6 3073 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  SEINET11688676  Cynodon dactylon Unknown 1982-1 428 Butte behind President's Mansion, California State University, Chico Comment
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  CDA35770  Cynosurus echinatus J. R. Keck Jr. 1981-5-13 PDR# 237677 Butte Oroville. 0 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
  JEPS113689  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC45125  Cyperus difformis Vernon Oswald 1987-8-13 3214 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Gravel bar along the river. 48 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  JEPS120155  Cyperus difformis Lowell Ahart 2012-10-20 18504 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA127041  Cyperus difformis H. S. Yates 1936-8-14 6123 Butte 10 miles S. of Durham 30 Comment
  CHSC37531  Cyperus eragrostis M. S. Taylor; L. Ahart 1982-10-11 5157 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  CHSC68380  Cyperus eragrostis L. P. Janeway 1987-5-7 2024 Butte Table Mountain Road where it is right at the base of the railroad fill and overlooking Thermalito Forebay. 91 Comment
  CHSC68383  Cyperus eragrostis L. P. Janeway 1988-6-19 2826 Butte Seepy area along Honey Run Road 0.9 mi southwest of The Skyway. 411 Comment
  JEPS120838  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  JEPS64096  Cyperus eragrostis W. L. Jepson 1939-8-17 19462 Butte Feather R. near Oroville; Feather R. 45 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
  CHSC116125  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  SEINET10938647  Cyperus erythrorhizos Mary Susan Taylor Taylor 836 Butte Bidwell Park, Chico. Comment
  CDA42942  Cyperus flavescens L. Ahart 2012-10-2 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS120025  Cyperus flavescens Lowell Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA42934  Cyperus iria L. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  JEPS98392  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte S end of the large dredge pond, on the W side of the Feather River between Palm Avenue and Vance Avenue Oroville Wildlife Area 28 Comment
  SEINET3478064  Cyperus niger Unknown 2000-6-17 8482 Butte Paradise, Paradise, about 2 miles south, about 0.25 miles northeast of Kunkle reservoir, east of the Pentz Magalia Road 540 Comment
  CHSC113534  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  UC478548  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CHSC28803  Cyperus strigosus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-7-6 405 Butte Top of North Table Bt, 300 m NW. of intersection of Cherokee Rd and the eastern edge of section 17. Comment
  CHSC68417  Cyperus strigosus L. P. Janeway 1986-10-19 1932 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CAS-BOT-BC133764  Cypripedium fasciculatum Lowell Ahart 1982-9-13 3809 Butte Field redacted by CAS, contact the data manager for more information 1100 Comment
  CHSC26840  Cystopteris fragilis M. S. Taylor 1978-6-24 1659 Butte On n side of Scotts John Rd, ca. 3 mi e of ets jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC57332  Cystopteris fragilis Robert C. Hill 1990-4-10 6 Butte At intersection of McCabe Creek, Lumpkin Road, 1 mi s of South Fork Feather River, 13 mi e of Oroville. 396 Comment
  SEINET3166413  Cystopteris fragilis P. J. Alexander 2009-5-27 1051 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, +-200 yards south of the bridge over Frey Creek, 3.3 miles SE of Bald Rock Dome, 17.8 miles ENE of Oroville, Plumas National Forest. 613 Comment
  UCD60505  Danthonia californica var. americana August L. Hormay 1929-6-22 s.n. Butte Butte Meadows. Comment
  POM92210  Darmera peltata C. C. Bruce 1898-1 2410 Butte [no additional locality data provided] Comment
  LA212402  Daucus pusillus Jim R. Shevock; 1972-5-19 1768 Butte N. of Lake Orvoville, Hwy. 70. 91 Comment
  RSA126003  Delphinium gracilentum E. K. Balls 1957-5-23 22529 Butte 3 miles SE from turn off Hwy 32 to De Sabla. 671 Comment
  CHSC117610  Delphinium hansenii subsp. hansenii L. P. Janeway 2016-5-5 11941 Butte Cascade Range Foothills. Along Humboldt Road 2.3 road-km northeast of Bruce Road; Chico 152 Comment
  JEPS104212  Delphinium hansenii subsp. hansenii Lowell Ahart 2003-5-27 10225 Butte On the e side of the dirt road, at Parking Area P, Upper Bidwell Park, ca 5 mi e of Manzanita Avenue, Chico. 228 Comment
  SEINET12099564  Delphinium nudicaule Unknown n d s.n. Butte Chico Comment
  CAS-BOT-BC8026  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville 1550 Comment
  CHSC51903  Delphinium patens subsp. patens Richard Steward 1988-4-2 2 Butte Ca 6 mi N, 0.4 mi NW of Paradise. 701 Comment
  CHSC56778  Delphinium patens subsp. patens J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte South side of Olive Hwy 0.4 mi southwest of its junction with Forbestown Road; ca 6.0 air mi east of Oroville. Comment
  CHSC59804  Delphinium patens subsp. patens Diana Licky 1981-5-5 Butte Concow area. Comment
  CAS-BOT-BC121618  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4252 Butte E of Bidwell Bar Bridge Comment
  CHSC76957  Delphinium variegatum Margie Collins 1894-5-1 Butte Chico. Comment
  CAS-BOT-BC16981  Delphinium variegatum subsp. variegatum A. A. Heller 1902-5-13 5520 Butte Near Clear Creek Comment
  CHSC2828  Delphinium variegatum subsp. variegatum David Prall 1965-3-28 15 Butte In fields e of Meridian Road, ca. 8 mi ne of Hwy 99E, n of Chico. 60 Comment
  CHSC77438  Delphinium variegatum subsp. variegatum Tim Stofer 1997-4-13 12 Butte At the shooting range 100 yards from the head of the South Rim Trail off South Park Dr. in Upper Bidwell Park. 76 Comment
  CHSC112900  Deschampsia danthonioides B. Castro; Robin Carter 2011-4-29 1877 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  HSC41096  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 1973-4-14 6052 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  POM365021  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte near Lomo at road forking to Chico Creek. Comment
  UCD62955  Deschampsia danthonioides L. Ahart 1977-4-29 1339 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC201740  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CHSC112202  Descurainia sophia Lowell Ahart 2013-4-20 18558 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
  CHSC97132  Dianthus armeria subsp. armeria Lowell Ahart 2007-7-2 14247 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 Comment
  JEPS113493  Dianthus armeria subsp. armeria Lowell Ahart 2007-7-2 14247 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville 680 Comment
  CHSC76942  Dicentra formosa Margie Collins 1894-5-1 Butte Chico. Comment
Read comments Jul 7 2010
  UC1362270  Dicentra formosa D. Parkinson 1964-4-1 Butte vicinity Monk's Store (Cohasset Stage); Cohasset Stage Comment
  POM148827  Dicentra formosa subsp. formosa Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  CAS-BOT-BC402392  Dicentra formosa subsp. formosa E. K. Balls; L. W. Lenz 1955-5-13 20687 Butte Magalia Reservoir, n. of Magalia 731 Comment
  CHSC19653  Dicentra formosa subsp. oregana K. R. Stern 1966-4-1 Butte Chico. Comment
  CHSC19655  Dicentra peregrina K. R. Stern 1966-5-14 Butte Chico. Comment
  UCD111668  Dichelostemma capitatum Christopher Mallek 2008-1 HW1- 12 Butte Magalia. 756 Comment
  CAS-BOT-BC500055  Dichelostemma capitatum Ahart; Jokerst 1985-3-24 4864 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
  SEINET12046807  Dichelostemma capitatum J. T. Nicol 1978-1 9 Butte ca 3.7 mi ESE of Ono on Platina Rd 290 Comment
  CHSC28905  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-3-1 2332 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC30700  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-5-27 2712 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  CAS-BOT-BC501088  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  CAS-BOT-BC502520  Dichelostemma volubile Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  HSC104001  Digitaria ischaemum L. Ahart 2012-10-20 18494 Butte Chico, Lower Bidwell Park, west of Cedar Grove, ~50 yds. W of Table 4 on the south side of Big Chico Creek 69 Comment
  SBBG128789  Digitaria ischaemum L. Ahart 2012-10-20 18494 Butte soil and gravel bar on the S side of Big Chico Crk, ca. 50 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  CHSC94764  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS110377  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CAS-BOT-BC151922  Diplacus douglasii Clare B. Hardham 1978-4-17 21556 Butte Lava - Lobb Mountain Comment
  CAS-BOT-BC150501  Diplacus grandiflorus John Thomas Howell 1951-6-26 27509 Butte Feather River Canyon 198 Comment
  CAS-BOT-BC150506  Diplacus grandiflorus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dam Power Station on Feather River, along U. S. Highway Alternate 40 Comment
  CAS-BOT-BC153219  Diplacus kelloggii A. A. Heller; H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek) Comment
  CHSC3464  Diplacus kelloggii Roger Jaegel 1996-3-28 82 Butte Located on the top of table mountain three miles south of Cherokee. Comment
  CHSC3885  Diplacus kelloggii Susan Carrauthers 1966-3-28 82 Butte Table mountain ca. 6 mi. N. of city of Oroville. Comment
  CHSC44671  Diplacus kelloggii R. Banchero 1980-4-26 135 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd, 0.4 mi SW of the town of Cohasset. 426 Comment
  CHSC44747  Diplacus kelloggii R. Banchero 1980-4-7 94 Butte Along Swedes Flat Rd ca 2.6 mi E of its jct with the Bangor Hwy, Ca 0.8 mi W of the jct of the Hurleton-Swedes Flats Rd and Swede Flat rd. 373 Comment
  CHSC44752  Diplacus kelloggii R. Banchero 1980-3-23 77 Butte Along Crown Point Rd, 0.6 mi from its jct with Hwy 32. 539 Comment
  CHSC44789  Diplacus kelloggii R. Banchero 1980-6-19 256 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  SEINET14453096  Diplacus longiflorus Richard J. Shaw 1982-1 3043 Butte Highway 70, Feather River Canyon, 1/2 mile east of Pulga Dam; ca. 2000 ft. Comment
  CAS-BOT-BC154174  Diplacus tricolor Peter H. Raven 1963-5-8 18360 Butte On State Highway 32, 5 miles west of Chico Comment
  CAS-BOT-BC154164  Diplacus tricolor Lowell Ahart 1973-4-6 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SEINET10465020  Dipsacus fullonum Mary Susan Taylor 1982-10-11 Taylor 5164 Butte T20N R2E sw sec 33. Along the Midway near a slough just n of Nelson-Shippee Rd, ca. 0.7 mi s of Nelson. Comment
  CDA34546  Dittrichia graveolens L. Ahart 2007-10-3 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. Comment
  RSA769811  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico 61 Comment
  CHSC10822  Dodecatheon clevelandii subsp. patulum Lowell Ahart 1968-3-11 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1393  Dodecatheon clevelandii subsp. patulum J. Baynes 1929-4-1 Butte Salmon Hole on Chico Creek. 152 Comment
  UC175531  Dodecatheon hendersonii A. A. Heller 1913-3-9 10686 Butte two mi n Oroville; n of Oroville Comment
  UCD118957  Dodecatheon hendersonii R. J. Radzavage 1979-4-18 9 Butte E side of Table Mountain Rd. Approx. 3 mi. s of Cherokee. 320 Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC31401  Downingia bella Paula J. Minton 1980-4-14 1 Butte 1 mi e of Chico, ca. 120 ft on n side of the Skyway. 70 Comment
  CHSC55483  Downingia bella L. P. Janeway 1991-5-2 3926 Butte 1 mi east of Palermo-Honcut Hwy and ca 2 1/2 mi north of Honcut. 38 Comment
  CHSC21743  Downingia bicornuta Robert A. Schlising 1963-5-4 2552 t Butte 0.3 mi S of Jct 99E and Pentz Rd. 91 Comment
  POM57731  Downingia bicornuta E. B. Copeland 1903-5-30 3284 Butte Chico. Comment
  CHSC109728  Downingia bicornuta var. bicornuta B. Castro 2006-5-25 1532 Butte Sacramento Valley. Ca 8 mi SE of Chico, ca 0.5 mi E of Hwy 99 0.4 mi NE of its jcn with Durham-Pentz Rd. By pond next to E-W ranch road along transmission lines through flt grasslands with intermittent stream (unnamed tributary to Hamlin Ck). 56 Comment
  CHSC75262  Downingia insignis Lowell Ahart 1999-5-21 8074 Butte On the sides and bottom of a drain ditch in a pasture field, on the east side of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS123830  Downingia insignis Lowell Ahart 2015-4-24 20058 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10458518  Downingia ornatissima Mary Susan Taylor 1978-5-7 Taylor 1609 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SBBG69654  Downingia pulchella M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  CAS-BOT-BC41348  Draba verna Lowell Ahart 1983-5-7 3967 Butte Honcut. Peter Ahart Ranch. About 1.5 miles north and 2.125 miles esat of Honcut. 50 Comment
  SEINET10448471  Draba verna Lowell Ahart 1983-5-7 Ahart 3967 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC44483  Draba verna var. aestivalis Lowell Ahart 1988-3-27 5931 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS116036  Draba verna var. aestivalis Lowell Ahart, John Dittes 2009-3-20 15503 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CHSC41318  Drosera rotundifolia S. C. Morey 1983-7-23 595 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. ... Field redacted by CHSC, contact the data manager for more information 1414 Comment
  UCD123983  Drosera rotundifolia Barry Rice 2011-7-6 BR 110705 Butte no exact location. 1460 Comment
  CHSC110346  Drymocallis glandulosa var. reflexa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  UC600378  Drymocallis hansenii E. B. Copeland 1929-7-25 Butte Jonesville 1550 Comment
  CAS-BOT-BC157792  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  UCD80274  Dryopteris CNPS SN Foothill Team 2005-3-30 SNFN 0070 b Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  CAS-BOT-BC70854  Dryopteris arguta Lowell Ahart 1983-7-24 4207 Butte Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CHSC101827  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS104145  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 490 Comment
  CHSC30036  Dudleya cymosa L. Ahart 1980-5-25 2319 Butte About 1 mile e of the Bangor-Oroville Hwy, along Swedes Flat Rd, near Bangor. 320 Comment
  CHSC36120  Dudleya cymosa K. Bridwell 1978-5-25 114 Butte Along n side of Skyway Rd, ca. 3 mi sw of Paradise. 609 Comment
  CHSC4511  Dudleya cymosa C. Glascock 1965-5-15 417 Butte 15 Miles House area, 10.4 mi. ne of Chico city limits. Ca. 8 yds downihill from road. Comment
  CAS-BOT-BC428074  Dudleya cymosa subsp. cymosa Herbert Copeland 1920-5-1 s.n. Butte Jonesville Comment
  CHSC31541  Dysphania ambrosioides L. Ahart 1978-7-23 1790 Butte Along the rd to our home. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC75996  Dysphania botrys Lowell Ahart; Vernon H. Oswald 1999-8-13 8178 Butte Disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southwest of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC94592  Dysphania pumilio Lowell Ahart 2006-9-11 13283 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC34191  Echinochloa colona L. Ahart 1981-9-19 3178 Butte Along edge of road just a few ft north of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC112604  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC97687  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CDA2012  Echinochloa crus-galli var. crus-galli G. D. Barbe, T. C. Fuller 1977-9-2 2337 Butte Rice Experiment Station, Biggs. 0 Comment
  SEINET3928604  Echinochloa muricata Lowell Ahart 1984-9-17 4792 Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles S of Oroville.; 0 50 Comment
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  SEINET239723 Image available Echinochloa oryzicola E. Dean, E. Healy 2001-8-20 854 Butte Biggs UC Field Station Comment
  UCD61176  Echinochloa oryzoides E. Dean; with J. Ditomaso and E. Healy 2001-8-20 853 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  CHSC78979  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station; field on south side of Hwy 162 between the railroad and Riceton Rd. 30 Comment
  UCD150364  Elatine ambigua William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd., rice field. Comment
  CHSC84023  Elatine rubella Lowell Ahart 2003-6-19 10292 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  CAS-BOT-BC113636  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  JEPS98305  Eleocharis acicularis Lowell Ahart 2000-10-2 8699 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC980097  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2678 Butte Biggs Rice Experiment Station Comment
  CHSC11930  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC31926  Eleocharis bella J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 842 Butte N of and adjacent to Humboldt Rd, 0.1 mi W of its junction with Skyway, community of Butte Meadows. 1341 Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS98468  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte 2 mi SE of Ordbend (N 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
  CHSC36358  Eleocharis bolanderi J. D. Jokerst; R. A. Schlising 1982-6-4 1592 Butte Along the edges of Concow Cr. at its headwaters just S. of Flea Valley. 1097 Comment
  UCD49589  Eleocharis engelmannii E. Dean; J. DiTomaso and E. Healy 2001-8-20 863 Butte Biggs UC Field Station. North of town Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads of buildings. Along east-west running dirt road. 30 Comment
  CHSC45175  Eleocharis macrostachya Lowell Ahart 1979-6-2 1913 Butte Bottom of a large wash in one of the farmed fields, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  CHSC62514  Eleocharis macrostachya B. Castro 1987-5-21 116 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E of Altatina Drive. 454 Comment
  CHSC68430  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1916 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  CHSC78924  Eleocharis macrostachya Lowell Ahart 2000-10-2 8702 Butte On the east side of the Sacramento River, northeast 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
  CDA38946  Eleocharis macrostachya G. D. Barbe, T. C. Fuller 1982-6-14 3678 Butte Black Bart Road, 1.25 miles west of Forbestown Road. Comment
  SEINET10466798  Eleocharis macrostachya Mary Susan Taylor 1978-9-8 Taylor 1878 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  JEPS98699  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC116302  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC78197  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte In bog like areas, seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia road, about 2 miles south of Paradise. 548 Comment
  JEPS98378  Eleocharis parishii Lowell Ahart 2000-10-2 8701 Butte 2 mi SE of Ordbend (W side 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
  SEINET11263892  Eleocharis pauciflora Lowell Ahart 2000-5-10 8333 Butte Peter Ahart Ranch, about 1 3/4 miles N and 1 1/4 miles E of Honcut, about 12 air miles SE of Oroville.; 0 37 Comment
  SEINET7587006 Image available Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte On the north side of Bean Creek Road, about 1.4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1067 Comment
  CHSC76303  Eleocharis radicans Lowell Ahart 1999-9-21 8276 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC78568  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  JEPS98520  Eleocharis suksdorfiana Lowell Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City. 1310 Comment
  POM319562  Elymus Patricia Wilder 1971-6-23 5285 Butte Magalia: north of Paradise; Coutelenc Road, just north of junction with Skyway Road, along railroad track. West slope of Sierra Nevada Mt. Range 732 Comment
  CHSC33137  Elymus caput-medusae J. D. Jokerst 1980-5-28 801 Butte Top of North Table Mt, S of Cherokee Rd. Comment
  CHSC75434  Elymus caput-medusae Jennifer Slater 1997-4-20 30 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC99759  Elymus elymoides subsp. californicus Lowell Ahart 2008-6-13 14822 Butte Bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  UC600747  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  SEINET10507698  Elymus glaucus Mary Susan Taylor 1980-5-27 Taylor 2722 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  JEPS94566  Elymus stebbinsii Lowell Ahart 1997-7-11 7744 Butte road cut on n side of dirt road se Cold Creek (about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City) 1219 Comment
  CHSC61535  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1993-6-26 7025 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CAS-BOT-BC409192  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC32668  Enemion occidentale M. S. Taylor 1981-3-24 3448 Butte S side of Hwy 70, ca. 100 ft w of Poe Dam, ca. 1/2 e of Pulga. Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  SEINET10453001  Epilobium brachycarpum Lowell Ahart 1985-10-12 Ahart 5201 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  JEPS104320  Epilobium campestre Lowell Ahart 2003-6-23 10313 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC69047  Epilobium canum subsp. latifolium Lowell Ahart 1997-8-1 7775 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC34015  Epilobium ciliatum subsp. ciliatum L. Ahart 1981-7-26 3003 Butte On sides of large ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl HQ, ca. 12 mi sw of Gridley. 35 Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  SEINET6637246 Image available Epilobium ciliatum subsp. ciliatum H. F. Copeland 1927-1 413 Butte Jonesville 1524 Comment
  CHSC30900  Epilobium densiflorum M. S. Taylor 1980-8-30 3320 Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 mi e of Oregon City, ca. 5.5 mi n of Oroville. 365 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
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC46579  Epilobium hornemannii subsp. hornemannii V . Oswald; L. Ahart 1989-7-21 3877 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  CHSC109228  Epilobium minutum Robert Fischer 2012-6-17 1060 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  CHSC70334  Epilobium minutum R. A. Schlising 1983-6-9 4419 Butte N part of county, along Humboldt Road, 1.9 mi NE of junction with Hwy 32 at Lomo. Carpenter Ridge. 1356 Comment
  CHSC70339  Epilobium minutum R. A. Schlising 1980-6-14 3709 Butte NE of Oroville at Little Bald Rock. 1051 Comment
  SEINET194313  Epilobium minutum A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  POM46486  Epilobium minutum C. C. Bruce 1897-06 s.n. Butte Butte Creek Comment
  RSA0045628  Epilobium torreyi Lowell A. Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 122 Comment
  RSA795698  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 0.75 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 air miles north of Oroville. 299 Comment
  CHSC6589  Epipactis gigantea R. Carter 1966-6-26 459 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC8750  Epipactis gigantea S. Chulasmai 1961-4-30 38 Butte Heloepine Spring (Upper Bidwell Park). Comment
  CHSC88066  Epipactis gigantea R. D. Fischer 2004-6-12 152 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  CHSC42750  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44621  Equisetum arvense Vernon Oswald 1984-4-16 1154 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  CAS-BOT-BC33516  Equisetum laevigatum Edwin Bingham Copeland 1930-6-24 403 Butte Jonesville 1500 Comment
  RSA0118769  Equisetum laevigatum Lowell A. Ahart 2013-4-20 18551 Butte In Wilson Creek, about 100 yards southwest of the oak trees, about 0.5 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3.75 miles (air) northeast of Honcot. 50 Comment
  SBBG126096  Eragrostis curvula L. Ahart 2012-6-2 18126 Butte S side of Hwy 70, ca 0.5 SW of Pentz Magalia Hwy 162 Comment
  CHSC51036  Eragrostis hypnoides Lowell Ahart 1990-7-4 6543 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC284080  Eragrostis pectinacea var. pectinacea Lowell Ahart 1977-7-10 1493 Butte 3 miles northeast of Honcut 50 Comment
  CHSC42142  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-11-24 4811 Butte Along the edge of Middle Honcut, Road, about 3/4 mile east of Highway 70, about 12 miles south of Oroville. 32 Comment
  UC754020  Eremocarpus setiger H. F. Copeland 1937-7-30 1604 Butte near Oroville (arid roadside) Comment
  CAS-BOT-BC131514  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC20959  Ericameria nauseosa var. speciosa M. S. Taylor 1975-9-19 920 Butte Ca. 1/2 mi n of Magalia. 609 Comment
  CHSC45661  Erigeron bonariensis Vernon Oswald 1987-6-12 2991 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 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
  UC426986  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 491 Butte above Jonesville 548 Comment
  CHSC34037  Erigeron inornatus var. inornatus L. Ahart 1981-7-7 2913 Butte A little e of the bridge across Rocky Honcut Creek, Swedes Flat Rd, ca. 7 mi s of Bangor. 350 Comment
  SEINET10839186  Erigeron inornatus var. viscidulus Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4206 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CAS-BOT-BC295772  Erigeron petrophilus var. sierrensis Lowell Ahart 1981-7-7 2932 Butte Ca. 0.5 mi. W of the Forbestown Res., NE of Forbestown 750 Comment
  JEPS119900  Erigeron philadelphicus var. philadelphicus Lowell Ahart 2012-5-25 18114 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CHSC37500  Erigeron sumatrensis J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1677 Butte Top of North Table Mt. north of Cherokee Rd. Adjacent of basalt outcrop. 381 Comment
  CHSC27256  Eriobotrya japonica P. Moyer 1971-2-1 79 Butte CSUC Campus. S bank Chico Ck., at base of sycamore tree, w of L.S.-Ed. Psych. Bridge. 60 Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  UC1594552  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte About 2 air mi north of Oroville (on north side of dirt road on north side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UCR190686  Eriodictyon californicum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  JEPS123966  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte About 300 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. Comment
  CHSC29787  Eriogonum lobbii M. S. Taylor; R. S. Schlising, J. D. Jokerst 1980-6-14 2872 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC46695  Eriogonum lobbii R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4642 Butte N part of county, on Snow Mountain ridge; in open area of decomposing andisitic outcrops. 2072 Comment
  CHSC34669  Eriogonum luteolum var. luteolum M. S. Taylor 1981-7-10 4060 Butte N side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39559  Eriogonum luteolum var. luteolum Lowell Ahart 1983-7-24 4205 Butte Found at the Forbestown Res., about 5 miles northeast of Forbestown. 450 Comment
  CHSC76063  Eriogonum luteolum var. luteolum G. F. Hrusa; T. D. Wilfred 1996-7-8 13104 Butte Serpentine outcrop at corner of Skyway Rd. and Rd. to Paradise Lake, at N boundary of Magalia. 580 Comment
  UC1594721  Eriogonum marifolium Lowell Ahart 1992-7-29 6892 Butte about 1 mi e, about 1/2 mi nw of Lotts Lake Carr mine 1828 Comment
  SEINET4854949  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC269853  Eriogonum nudum var. pubiflorum A. A. Heller 1913-9-16 11141 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC39136  Eriogonum nudum var. pubiflorum R. A. Schlising; K. Tarp 1982-7-24 4340 Butte E of Stirling City, at Creek in Breakneck Canyon. 1417 Comment
  CHSC39137  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-8-31 4383 Butte N part of county, S of Butte Meadows along Humboldt Road; at immediate roadside. 1402 Comment
  CHSC50416  Eriogonum nudum var. pubiflorum Vernon Oswald; Lowell Ahart 1990-6-27 4337 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). On an open roadcut. 1109 Comment
  UC600501  Eriogonum nudum var. pubiflorum H. F. Copeland 1927-9-2 949 Butte Jonesville Comment
  CHSC23373  Eriogonum roseum Lowell Ahart 1975-9-4 981 Butte Growing along Ponderosa Way, two miles southwest of Feather Falls. Ca 1 1/2 mi NW of the Ponderosa Dam. 396 Comment
  CHSC59563  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  CHSC69454  Eriogonum umbellatum var. ahartii Lowell Ahart 1997-9-6 7893 Butte On the west side of Concow Road, about 2 miles northeast of Concow Reservoir. 701 Comment
  SEINET11932639  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-1 4280 Butte N side of Feather River Hwy 70 at Pulga bridge, on large outcrop, ca 20 mi NE of Oroville 488 Comment
  UC177591  Eriogonum ursinum H. M. Hall 1914-7-27 9787 Butte e Jonesville (Big Summit, Humboldt Road); Big Summit 2042 Comment
  UC912723  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte summit above Jonesville 2133 Comment
  RSA0048238  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Feathr River Cyn., Hwy. 70. 1066 Comment
  CHSC39091  Eriogonum ursinum var. ursinum R. A. Schlising 1980-7-28 3935 Butte N part of county, E of Jonesville on road to Scotts John Creek. Comment
  UCD101514  Eriogonum vimineum Lowell Ahart 1972-6-21 120 Butte Peter Ahart Ranch, about 2.25 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC30289  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1980-5-27 2723 Butte North side of Oroville-Quincy Hwy ca. 2 mi s of Lake Madrone. 609 Comment
  CHSC30728  Eriophyllum lanatum var. grandiflorum 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
  CHSC4710  Eriophyllum lanatum var. grandiflorum R. Carter 1966-7-10 470 Butte Found Feather R. Canyon 4.4 mi. W of Butte Co. line along W side of Hwy. 70. 609 Comment
  CHSC77707  Eriophyllum lanatum var. grandiflorum Anna Pinsky 1997-4-24 11 Butte Upper Bidwell Park, Salmon Hole, 100-200 ft. above Big Chico Creek. Near parking area, off main road into park. Comment
  POM358061  Eriophyllum lanatum var. grandiflorum D. McClain 1969-4-24 89 Butte 10 yards south of Cohasset Road, 5 miles west of Cohasset 488 Comment
  CHSC101281  Erodium brachycarpum Lowell Ahart 2009-4-3 15527 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS119787  Erodium brachycarpum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17998 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS94666  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CHSC38696  Erythranthe bicolor Vernon Oswald 1983-5-8 447 Butte Upper Bidwell Park, Chico, on the w bank of the Diversion Channel between Lindo Channel and Wildwood Ave. 83 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
  SEINET13694419 Image available Erythranthe bicolor Lincoln Constance 1941-1 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET8245391  Erythranthe bicolor A. A. Heller 1914-5-17 11338 Butte none. 732 Comment
  CHSC1760  Erythranthe cardinalis V. Holt 1932-10-28 Butte Near Richardson Springs. 152 Comment
  CAS-BOT-BC151492  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, Ca 2.5 mi e of the jct of Zink Rd and Bald Rock Rd. 975 Comment
  CHSC40889  Erythranthe filicifolia Lowell Ahart 1985-5-22 5027 Butte Along Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CHSC40884  Erythranthe glaucescens Lowell Ahart 1985-5-15 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC44784  Erythranthe glaucescens R. Banchero 1980-3-16 67 Butte Along Neal Rd 5.4 mi NE of its jct with Hwy 99, Ca 2.8 mi SW of the town of Paradise. 274 Comment
  SEINET14046240 Image available Erythranthe guttata Helena Barden 1941-1 Butte Road from Pines General Store, Yankee Hill, to Highway #24 Comment
  CAS-BOT-BC151462  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  CHSC48999  Erythranthe microphylla Vernon Oswald 1984-3-26 1111 Butte Hamilton-Nord-Cana Hwy, 0.5 mi n of Bennett Rd. 48 Comment
  CHSC11896  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  CHSC44766  Erythranthe primuloides R. Banchero 1980-6-26 274 Butte Banchero Meadows, 1.1 mi S of Inskip along the Skyway, 4.5 mi N of Stirling City. 1426 Comment
  CHSC43962  Erythranthe pulsiferae Vernon Oswald 1988-5-30 3347 Butte Humbug Rd. 1.0 mi s of Nimshew. 627 Comment
  POM219479  Erythranthe pulsiferae E. B. Copeland 1931-7-6 687 Butte Jonesville. 1500 Comment
  CAS-BOT-BC504524  Erythronium multiscapideum C. C., Mrs. Bruce 1898-5-1 2011 Butte Butte Creek Comment
  SEINET10469549  Erythronium multiscapideum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 A Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  SEINET10528914  Erythronium multiscapideum A. Arthur Heller 1939-4-8 Heller 15368 Butte Rather plentiful on a serpentine outcrop about 4 miles east of Magalia on the Coutoleno road. Transition Life Zone. Comment
  SEINET10839630  Erythronium multiscapideum Lowell Ahart 1983-4-14 Ahart 3934 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC40050  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Among lava rocks at the Salmon Hole on Chico Creek east of Chico. Comment
  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
  HSC23330  Eschscholzia californica L. Walk 1971-4-9 3 Butte S bank of stream, .5 mi. SE of Keefer Rd., 1.5 mi. E of Hwy. 99, Chico 30 Comment
  POM125703  Eschscholzia californica var. crocea C. C. Bruce 1897-05 2022 Butte Near Chico. Comment
  HSC67920  Eschscholzia lobbii J. P. Smith 1973-3-22 5918 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC34712  Eucephalus breweri M. S. Taylor; Lowell Ahart 1981-8-16 4212 Butte N side of rd 25N04, ca. 0.5 mi E of its jct with 52513, ca. 1 mi NE of Jones Meadow, ca. 6 mi NE of Stirling City. 1889 Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  CHSC44278  Euonymus occidentalis var. occidentalis V. Oswald; W. Dempsey, D. Perske 1988-6-15 3386 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Near the bottom of a canyon slope along the W. Branch of Mud Creek. 853 Comment
  CAS-BOT-BC202427  Euphorbia ocellata A. A. Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, east of Chico Comment
  JEPS122258  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UC1557929  Eurybia radulina J. Semple, S. Heard 1986-8-14 8418 Butte between Stirling City and Butte Meadows (ne of Chico) just ne of Inskip Comment
  CHSC28422  Euthamia occidentalis M. S. Taylor 1979-10-2 2215 Butte On sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC27262  Fatsia japonica P. Moyer 1971-10-30 52 Butte CSUC Campus. Front of 'A' Bldg. 60 Comment
  CHSC93854  Festuca Lowell Ahart 2006-5-19 12635 Butte Road gutter, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  CHSC112787  Festuca bromoides Lowell Ahart 2013-5-18 18700 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC49699  Festuca californica Vernon Oswald 1987-4-14 2325 Butte Butte Creek Trail ca. 0.4 mi s of the trailhead located near the bridge over Butte Creek nne of De Sabla. 609 Comment
  CAS-BOT-BC278802  Festuca occidentalis Clarence R. Quick 1963-7-16 63 51 b Butte Section Corner Meadow east of Pulga. Feather River canyon 1463 Comment
  CHSC76331  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 770 Comment
  CHSC12004  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC62942  Frangula californica subsp. tomentella Vesta Holt 1932-6-1 s.n. Butte Near Chico. Comment
  CHSC104008  Fraxinus caroliniana Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16742 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
  CHSC23678  Fraxinus dipetala M. S. Taylor 1976-4-27 1088 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  CAS-BOT-BC212962  Fremontodendron californicum Frances Brown 1935-5-1 s.n. Butte Near Durham. 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
  SEINET10469561  Fritillaria atropurpurea Mary Susan Taylor 1978-1 Butte Comment
  CHSC3193  Fritillaria eastwoodiae Dona Kingsford 1966-3-23 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  JEPS108824  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  SEINET10500617  Galium aparine Mary Susan Taylor 1974-5-3 Taylor 213 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  UC1143083  Galium bolanderi J. E. Sowder 1933-8-15 130 Butte 1 1/2 mi w mouth of Flea Valley Creek (on point of ridge); Bidwell Bar Quadrangle Comment
  UC397359  Galium bolanderi Mrs. R. M. Austin May 1886 671 Butte Little Chico Canyon Comment
  CHSC29769  Galium divaricatum M. S. Taylor 1980-5-24 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM68694  Galium nuttallii var. tenue C. C. Bruce 1897-05 1934 Butte Little Chico. Comment
  SEINET10500638  Galium parisiense Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4061 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
  CHSC51912  Galium porrigens var. tenue Sally A. Carter 1988-4-24 Butte South side of Little Chico Cr, ca 8.8 mi ESE of Chico, ca 50 ft W of Honey Run Rd. Comment
  SEINET10500751  Galium trifidum subsp. subbiflorum Mary Susan Taylor 1975-9-12 Taylor 906 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CHSC30778  Galium triflorum M. S. Taylor 1978-7-19 1740 Butte Cherry Hill Campground on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC39346  Gamochaeta argyrinea Lowell Ahart 1983-6-26 4152 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. The sign gives Big Bridge Road instead of Ponderosa Way. 575 Comment
  CHSC42391  Gamochaeta argyrinea Lowell Ahart 1987-6-9 5738 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC30362  Gastridium phleoides J. D. Jokerst 1980-4-17 590 Butte Top of North Table Mt, N edge of Mt. 472 Comment
  CHSC78003  Gastridium phleoides Lowell Ahart 2000-5-13 8340 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC278703  Gastridium ventricosum Lowell Ahart 1983-6-21 4063 Butte Along Bloomer Hill Road, ca. 1/8 mi. W of the Oroville Quincy Highway, 1.25 mi. S of the Berry Creek School, NE of Oroville 400 Comment
  CHSC37443  Gayophytum diffusum subsp. parviflorum R. A. Schlising; R. Banchero, R. Preston 1981-7-14 4144 Butte About 0.3 mi s of Humbug Summit in ne part of county. 1981 Comment
  CHSC37445  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-7-11 3884 Butte E side of county ne of Berry Creek and Brush Creek at south end of Walker Plains. 1536 Comment
  CHSC46456  Gayophytum humile V. Oswald; L. Ahart 1989-6-27 3818 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 1981 Comment
  CHSC103656  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest 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 southeast of Oroville. 38 Comment
  CHSC34812  Genista monspessulana M. S. Taylor 1981-5-5 3613 Butte W side of spur rd, ca. 1/2 mi n of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi n of Feather Falls. 853 Comment
  CHSC43043  Gentianopsis simplex L. P. Janeway 1987-7-5 2447 Butte 1.0 mi SW of Jones Mdw along the Concow Rd, then 0.4 mi E on a spur rd. Meadow. 1798 Comment
  SD3714  Gentianopsis simplex E. B. Copeland 1930-8-2 Butte Jonesville 1500 Comment
  SEINET10454851  Gentianopsis simplex Mary Susan Taylor 1977-8-17 Taylor 1495 Butte Scattered in Montane Meadow on S side of Humbug Rd, ca. 1 mi N of Snag Lake. 1829 Comment
  CHSC38453  Geranium carolinianum Vernon Oswald 1983-4-20 352 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.8 mi e of the power lines. 182 Comment
  CHSC31734  Geranium dissectum L. Ahart 1975-4-6 742 Butte On the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 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
  CHSC38455  Geranium molle Vernon Oswald 1983-3-31 233 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  CHSC26851  Geum macrophyllum M. S. Taylor; M. Hayes 1978-6-24 1639 Butte On Ernies Island, at jct with Old Humboldt Rd and Butte Creek, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC64211  Geum macrophyllum S. C. Morey 1983-8-3 697 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC41372  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-6-12 3693 Butte 0.25 mi S of Tehama County line on Highway 32 near Lomo. 1121 Comment
  SEINET10496744  Gilia capitata subsp. mediomontana Mary Susan Taylor 1981-5-21 Taylor 3772 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC1242  Gilia capitata subsp. pedemontana Edna Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC82402  Gilia capitata subsp. pedemontana Lowell Ahart 2002-5-7 9626 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
  CHSC93488  Gilia capitata subsp. pedemontana Lowell Ahart 2006-5-8 12607 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC52104  Gilia tricolor Carol A. Bordin 1983-4-11 11 Butte Ca. 0.5 mi e of Hwy 99 on Durham Pentz Rd, n of Falager Ct, n Durham Pentz Rd, ca. 4 mi e of Durham. 54 Comment
  CHSC100984  Gilia tricolor subsp. tricolor L. P. Janeway 2008-4-2 9245 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 178 Comment
  CHSC78135  Githopsis pulchella subsp. campestris Lowell Ahart 2000-5-31 8422 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  JEPS115036  Glinus lotoides Lowell Ahart 2007-10-31 14512 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  SEINET10475071  Gnaphalium luteoalbum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3425 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  SEINET10904836  Gnaphalium luteoalbum Mary Susan Taylor 1977-10-10 Taylor 1529 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CHSC116285  Gnaphalium palustre Lowell Ahart 2015-10-26 20601 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  JEPS121903  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC117593  Gnaphalium stramineum B. Castro; Tom Bouillon 2008-7-10 1761 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. Growing on flat bench between W levee and the creek within recently planted, irrigated riparian restoration area. 57 Comment
  UC600633  Goodyera oblongifolia unknown 1924-8-10 857 Butte Jonesville Comment
  CHSC4573  Grindelia hirsutula var. davyi C. Glascock 1965-5-18 431 Butte SW corner of Nelson and 4th Ave., Thermalito. Comment
  RSA496348  Hackelia californica Elaine Joyal, D. Mehlman 1988-7-3 1308 Butte Butte-Tehama Cos. line: Lassen National Forest, e side of Humboldt summit. 2100 Comment
  JEPS120073  Hedera helix Lowell Ahart 2012-10-20 18489 Butte On the north side of the paved park road and south of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SD241752  Hedypnois cretica Lowell Ahart 2003-5-15 10179 Butte Damp soil of dredge piles, no the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SEINET3450915  Hedypnois cretica Unknown 2003-5-15 10179 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  JEPS126530  Hedypnois rhagadioloides Lowell Ahart 2016-5-25 20875 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC309402  Helenium puberulum John Thomas Howell 1959-9-20 34710 Butte Feather River Highway at West Branch bridge Comment
  UC217228  Helianthella californica subsp. nevadensis H. M. Hall 1917-5-13 10300 Butte Honeymoon Grade 396 Comment
  CHSC43614  Helianthus annuus Vernon Oswald 1987-7-23 3150 Butte W side of Hwy 99, 0.7 mi se of the Butte-Tehama county line. Along edge of roadside ditch. 60 Comment
  UCD146601  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte above Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  CHSC35086  Heliotropium europaeum R. A. Schlising 1981-9-26 4207 Butte W of Chico at Sacramento River, in Bidwell River State Park. Comment
  SEINET10467403  Hemicarpha micrantha var. minor Lowell Ahart 1985-11-7 Ahart 5233 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
  CHSC92613  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  UC1609075  Hemizonella minima Lowell Ahart 1993-6-26 7021 Butte about 1 mi w Lost Creek Reservoir (e side of dirt road); Mooreville Ridge 1188 Comment
  CAS-BOT-BC314994  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  SEINET10971133  Hemizonia luzulifolia subsp. rudis Mary Susan Taylor 1977-8-16 Taylor 1435 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CHSC36119  Hesperevax caulescens Mary Banchero 1979-4-18 17 Butte Northernmost Butte County, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. 56 Comment
  SD64391  Hesperocyparis macnabiana Darley F. Howe 1966-9-1 Butte Magalia 580 Comment
  JEPS32279  Hesperolinon californicum Mrs. R. M. Austin April, 1896 194 Butte plains near Chico Comment
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  JEPS88408  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8084 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (in the nw corner of Tract 9.1, Sanctuary I, (a unit managed for watergrass)); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  RSA285912  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. Comment
  UCD13377  Heteranthera rotundifolia Sue Nichol 1996-7-1 s.n. Butte Biggs Rice station; near Hwy 162. North of Butte city. Comment
  CAS-BOT-BC143633  Heteromeles arbutifolia A. A. Heller 1913-12-5 11149 Butte In the canyon of Big Chico Creek east of Chico 91 Comment
  CHSC1551  Heteromeles arbutifolia R. M. Staley 1952-7-4 Butte Paradise. 548 Comment
  POM91572  Heteromeles arbutifolia C. C. Bruce 1897-06 1795 Butte [No location information provided.] Comment
  CHSC35318  Heterotheca grandiflora M. S. Taylor; K. Tharp 1982-4-8 4293 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC83120  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 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
  CHSC83119  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 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
  CHSC2421  Heuchera micrantha var. erubescens R. Carter 1965-6-1 222 Butte Found on top of Big Bald Rock, growing below granite shelf about 75 yds. E of Exact top of rock, ca. 20 mi. E of Oroville. 1005 Comment
  UCD116345  Hibiscus lasiocarpos var. occidentalis G. L. Webster; G. L. Stebbins 1967-8-27 7531 Butte Rancho Llano Seco, near end of west arm of Eddy Lake. Comment
  SBBG28522  Hieracium albiflorum E. B. Copeland 1930-7-16 Butte Jonesville 1600 Comment
  CHSC31650  Hirschfeldia incana L. Ahart 1976-4-4 1151 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43670  Hoita macrostachya Vernon Oswald 1983-6-14 685 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. 207 Comment
  SEINET13710942  Hoita macrostachya Lowell William Ahart, Lowell William Ahart 2003-1 10420 Butte About 4 Air Mi. SW of Forbestown (39 Deg 29'53.2"N, 121 Deg 20'22.7"W) 2350 Ft. 716 Comment
  CHSC34029  Hoita orbicularis L. Ahart 1981-7-7 2922 Butte In a small springy area ca. 1/2 mi w of the Oroville-Forbestown Rd on the Black Bart Rd, w of Forbestown. 700 Comment
  JEPS46114  Hoita orbicularis Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  CHSC8213  Holcus lanatus B. Hamilton 1969-4-15 4 Butte Found near irrigation ditch on corner of Ord Ferry and Butte-City-Chico Rd. Comment
  RSA0112643  Holocarpha virgata subsp. virgata Lowell Ahart 2013-9-5 19022 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  SEINET10483353  Holodiscus boursieri Lowell Ahart 1985-6-16 Ahart 5044 Butte About 1/4 mile south-west of the Forbestown Resevoir, about 4 miles north-east of Forbestown. Comment
  CHSC40330  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
  CHSC92536  Holodiscus discolor L. P. Janeway; M. Brown, S. Mackey Hillaire, L. Hanson 2005-4-25 8370 Butte Northern High Sierra Nevada. Plumas National Forest; north end of Rocky Ridge, southwest side of Rim Road (Ponderosa Way) 1.4 road km southeast of junction with Concow Road. 1036 Comment
  UC1594546  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  CAS-BOT-BC285089  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2121 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31385  Hordeum murinum subsp. leporinum J. D. Jokerst 1979-4-13 1193 Butte Top of North Table Mt., ca 200 meters N of the intersection of Cherokee Rd and the E edge of the mountain. 396 Comment
  SEINET11910948  Horkelia californica subsp. dissita L. Ahart, Ahart, P. 1984-1 4647 Butte About 1mi. NE of the West Branch Bridge, ca 2mi. S of Old Yankee Hill, ca 16mi. NE of Oroville 450 Comment
  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
  CAS-BOT-BC143358  Horkelia tridentata Lowell Ahart 1982-5-8 3413 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  UC481567  Horkelia tridentata subsp. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  SEINET5327434  Hosackia incana R. McKee, H. L. Westover 1918-6-5 s.n. Butte Paradise Comment
  SEINET5327465  Hosackia oblongifolia var. oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CDA15322  Hydrocotyle umbellata D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  UCD119493  Hydrophyllum occidentale M. S. Taylor 1980-5-4 1997 A Butte Along Millsap Bar Rd., ca. 4 mi ne of its jct with Brush Creek Rd, ca 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC400833  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC29844  Hypericum anagalloides K. R. Stern 1979-5-23 6612 Butte Ca. 5 mi. SW of Paradise. 182 Comment
  CHSC25260  Hypericum concinnum M. S. Taylor 1977-6-26 1385 Butte S side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 548 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
  CHSC48479  Hypericum concinnum Vernon Oswald 1984-6-14 1290 Butte Ponderosa Way between Cohasset and Chico Creek. Growing on the edge of the road in chaparral. Comment
  CAS-BOT-BC410225  Hypericum concinnum A. A. Heller 1928-5-27 I 4560 Butte In an adandoned field near the sawmill along the Neal road at Paradise Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CAS-BOT-BC311404  Hypochaeris radicata Lowell Ahart 1987-10-16 5913 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CHSC44160  Ipomopsis aggregata subsp. formosissima V. Oswald; L. Ahart 1988-7-29 3654 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  UC176159  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte near Stirling 1074 Comment
  CHSC2205  Iris macrosiphon M. Roberson 1956-4-7 Butte SN of Paradise along Skyway. 426 Comment
  CHSC28828  Isoetes howellii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 420 Butte Top of North Table Mountain, ca 1.0 mi n of Cherokee Rd. Comment
  RSA0118713  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CAS-BOT-BC69948  Isoetes howellii Lowell Ahart 1974-5-30 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC101663  Isoetes nuttallii Lowell Ahart 2009-4-26 15642 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS106164  Isoetes orcuttii Lowell Ahart 2004-4-4 10726 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  CAS-BOT-BC112447  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Peter Ahart Ranch, ca/ 1 1/2 mi N and 1 1/4 mi. E of Honcut. 39 Comment
  CHSC3365  Juglans californica var. hindsii M. Gregg 1966-4-11 90 Butte On the Nature Trail in Bidwell Park, Chico. Just off of E. 8th St. Comment
  CHSC93635  Juglans californica var. hindsii Paul Kirk 2001-10-19 12 Butte City of Chico, private property on SE corner of Henshaw and Nord. Closest to the street corner. 51 Comment
  CHSC109602  Juglans hindsii Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwwell Park, Chico. 76 Comment
  CHSC93633  Juglans nigra Paul Kirk 2001-5-25 5 Butte City of Chico, parking lot on south side of the Senator Theater at 517 Main St. 30 Comment
  SEINET10472534  Juncus Mary Susan Taylor 1980-5-27 Taylor 2688 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
  SEINET10971326  Juncus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4204 a Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC28664  Juncus balticus subsp. ater J. D. Jokerst 1979-11-4 401 Butte At creek edge in meadow. 100 mets. SE. of intersection Butte Cr. and Humbug Rd. (at Butte Creek House). 1767 Comment
  RSA325941  Juncus balticus subsp. ater L. Ahart 1984-5-6 4586 Butte Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 miles N and 3 miles E of Honcut; ca. 12 miles S of Oroville. 50 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
  SEINET10872253  Juncus bufonius Mary Susan Taylor 1982-4-28 Taylor 4366 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC113167  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC28831  Juncus bufonius var. bufonius J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 423 Butte Top of North Table Mt, ca 1.0 mi n of jct of east edge of Mt and Cherokee Rd. 381 Comment
  CHSC61516  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte Large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC61517  Juncus bufonius var. bufonius Lowell Ahart 1993-6-20 6992 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC96961  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14076 Butte Seeps, about 40 yards north of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC99321  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 Butte Along a small drainage, 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. 223 Comment
  JEPS114373  Juncus bufonius var. bufonius Lowell Ahart 2008-5-2 14707 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 238 Comment
  CHSC103694  Juncus capitatus Lowell Ahart 2010-5-14 16654 Butte In 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
  CHSC49608  Juncus cyperoides Vernon Oswald 1985-6-15 1837 Butte Black Bart Rd., 0.7 mi sw of Forbestown Rd. 662 Comment
  RSA0118712  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  JEPS98525  Juncus diffusissimus Lowell Ahart 2000-7-18 8596 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
  JEPS98694  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte 2 mi S of Paradise (1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 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
  SBBG128059  Juncus effusus subsp. effusus L. Ahart 2011-8-19 17636 Butte ca. 30 yards E of Know-nothing Crk, in low area on the N side of Lumpkin Ridge Rd, ca. 0.5 mi SW of the intersection of Lumpkin Ridge Rd, County Rd and rd to Cascade, ca. 5 mi NE of Feather Falls 1225 Comment
  CHSC31433  Juncus ensifolius L. Ahart 1980-9-10 2619 Butte Near the edges of seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC99488  Juncus ensifolius Lowell Ahart 2008-7-23 15142 Butte 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
  JEPS113872  Juncus ensifolius Lowell Ahart 2007-7-15 14303 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
  UCD141535  Juncus ensifolius Robert E. Preston 1982-7-16 337 A Butte Crane Valley. 1584 Comment
  CHSC28792  Juncus howellii J. D. Jokerst; M. S. Taylor 1979-7-21 304 Butte Humboldt Summit, Humboldt Road, N.E. corner of Butte Co. Comment
  CHSC96955  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
  CAS-BOT-BC110138  Juncus leiospermus var. leiospermus Lowell Ahart 1979-4-30 1854 Butte 7 miles north of Oroville. On the top of Table Mountain. 400 Comment
  JEPS122224  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19390 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC1438371  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1702 Butte ca 7 mi n Oroville (on top of Table Mountain); Table Mountain 400 Comment
  UC600803  Juncus mexicanus H. F. Copeland 1930-7-28 Butte by Humbug Road Jonesville 1828 Comment
  CHSC31927  Juncus nevadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 846 Butte Chico Meadows, 1.1 mi N of Humboldt Rd adjacent to Scout Rd., community of Butte Meadows. 1341 Comment
  CHSC59023  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte On the bottom of a snow lake, on the south side of Coon Hollow, about 2 (air) miles northeast of Philbrook Reservoir. 1737 Comment
  POM196141  Juncus nevadensis E. B. Copeland 1929-7-29 s.n. Butte Near Butte Creek House, above Jonesville. 1750 Comment
  UC600810  Juncus nevadensis H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 Comment
  CHSC105686  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC57157  Juncus orthophyllus L. P. Janeway 1987-6-27 2340 Butte Canyon of Little Kimshew Creek; along road 0.9 mi north of the Concow Road. 1508 Comment
  CHSC71201  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 Butte Center of a seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC78340  Juncus orthophyllus Lowell Ahart 2000-6-29 8536 Butte East side of Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC49623  Juncus oxymeris Vernon Oswald 1987-5-18 2910 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  JEPS96003  Juncus oxymeris Vernon H. Oswald and Lowell Ahart 1996-5-27 7659 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (s side of levee road at sw corner of Tract 3.4, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC49625  Juncus parryi Vernon Oswald 1983-8-17 1004 Butte Pacific Crest Trail ca. 1000 ft e of Humboldt Summit. 2011 Comment
  CHSC50383  Juncus patens Vernon Oswald; Lowell Ahart 1990-5-26 4256 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  CHSC54194  Juncus patens Vernon H. Oswald; Lowell Ahart 1991-5-31 4638 Butte Dan Beebe Trail, Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool and on the north side of Oroville Dam Blvd East, between the 4 and 5 mile posts (ca. 4.5 miles). Along a drainage crossing the trail. 85 Comment
  CHSC39682  Juncus tenuis Lowell Ahart 1983-6-21 4103 Butte Found along the edge of Bloomer Hill Road, about 3 miles northwest of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  CHSC51284  Juncus tenuis Lowell Ahart 1990-10-3 6621 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC96750  Juncus trilocularis Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  CHSC98997  Juncus trilocularis Lowell Ahart 2008-5-30 14792 A Butte Dry to damp bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CHSC97252  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale. 29 Comment
  RSA727521  Juncus usitatus L. Ahart 2007-7-31 14401 Butte On the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 Comment
  JEPS113744  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte S side of a drainage ditch, N side of Evans Reimer Road, about 1 1/4 mi E of Pennington Road, about 4 3/4 mi (air) SW of Gridley 22 Comment
  SBBG128190  Juncus usitatus L. Ahart 2009-7-4 15999 Butte side of a large shallow pond, on the W side of the gravel rd, ca. 100 yards S of parking lot 3, Gray Lodge Waterfowl Management Area, ca. 6 mi (air) SW of Gridley 21 Comment
  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
  CHSC11817  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  CHSC27996  Kelloggia galioides M. S. Taylor 1978-7-18 1678 Butte On W side of Hwy 32, ca. 1/4 mi N of Forest Ranch. 718 Comment
  RSA4161  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  UC889317  Kelloggia galioides A. A. Heller 1917-7-29 12870 Butte summit above Jonesville 2133 Comment
  CHSC109754  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC65176  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CDA2213  Koeleria gerardi Sterling O. Mattoon 1971-4-27 Butte 6.9 miles east of Chico. 0 Comment
  CHSC36416  Koeleria phleoides Donald M. Burk 1982-4-24 115 Butte Along top of canyon on N. side of Neal Rd., ca. 0.6 mi. W. of Elliot Spring House. 243 Comment
  UC204878  Koeleria phleoides A. A. Heller 1914-5-19 11417 Butte Comment
  CHSC4662  Kumlienia hystricula R. Carter 1966-4-11 340 Butte Found ca. 1/4 mi. E of Bidwell Bar along S side of R.R. tracks; on cliff. 152 Comment
  UC600742  Kyhosia bolanderi H. F. Copeland 1930-7-25 1322 Butte below cabin Jonesville Comment
  UCD141220  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Road, Oroville. Comment
  CHSC37528  Lactuca saligna M. S. Taylor; L. Ahart 1982-10-11 5151 Butte Graylodge Wildlife Refuge, near check-in station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC84400  Lactuca saligna Lowell Ahart 2003-8-6 10476 Butte In the road gutter on the east side of Encina Grande Road, just south of a small branch of Canyon Creek, about 1 mile west of Oroville Quincy Highway, about 2 1/2 miles (air) southwest of Berry Creek. 632 Comment
  CAS-BOT-BC341295  Lagophylla glandulosa J. D. Jokerst; M. S. Taylor 1979-10-13 0397 Butte Jordan Hill Rd. (Ponderosa Way), 2.25 mi E. of North Fork of Feather River 853 Comment
  CHSC42274  Lamium amplexicaule L. P. Janeway 1987-4-14 2004 Butte Oroville, Thermalito Forebay North Picnic Area. 70 Comment
  CHSC748  Lamium amplexicaule M. Roberson 1956-4-2 Butte SW of Paradise along Skyway. 426 Comment
  JEPS103412  Lamium amplexicaule Lowell Ahart 2002-3-2 9414 Butte On the W edge of the Midway, ca 1 mile N of Richvale. 30 Comment
  CHSC113441  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC8117  Lasthenia californica J. G. Moore 1969-4-13 74 Butte Pentz Rd., 200 yds. e of Hwy. 99, on s side of road. 60 Comment
  POM29967  Lasthenia californica C. C. Bruce 1897-12 2071 Butte [Unspecified] Comment
  UC472261  Lasthenia californica subsp. californica Francis Ramaley 1917-5-6 11213 Butte near Chico Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC33352  Lasthenia fremontii R. M. Winchell 1980-4-23 4 Butte N of Chico. Between Singer Creek and Cana-Pina Road. Comment
  CHSC46948  Lasthenia fremontii Lowell Ahart 1978-5-1 1694 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC35629  Lasthenia platycarpha R. E. Preston 1982-3-22 196 B Butte Ca. 50 ft e of Hwy 149, ca. 3/4 mi e of Hwy 99, ca. 10.5 mi nw of Oroville. 60 Comment
  JEPS98328  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CHSC44203  Lathyrus sphaericus Vernon Oswald 1988-5-27 3343 Butte 5782 Kibler Rd, Paradise. 585 Comment
  CAS-BOT-BC213286  Lathyrus sulphureus Lowell Ahart 1983-5-28 4025 Butte Along the trail to the over-look at Feather Falls, 3 1/2 miles north of Feather Falls 600 Comment
  CHSC90505  Lathyrus sulphureus J. Marr 1988-4-20 3 Butte Ca. 25 ft. n side of Honeyrun Rd., Paradise. 9 mi ese of Chico. 243 Comment
  CAS-BOT-BC321781  Layia fremontii Lowell Ahart 1980-4-21 2104 Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC90986  Layia fremontii Lowell Ahart 2005-5-11 11801 Butte Margins of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  UC304001  Layia fremontii H. E. Brown 1897-4-15 184 Butte Clear Creek 53 Comment
  CAS-BOT-BC321757  Layia fremontii N. Wynne; M. Peckham; J. Bamesberger 1914-3-28 54 Butte Table Mountain, Cherokkee Rd., approx. 2 miles E of Hwy 70. Comment
  CAS-BOT-BC321759  Layia fremontii Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 3 Butte At intersections of Hwys 149 & 99 just N of Oroville, 50' E of offramp 54 Comment
  SFV4007  Layia platyglossa M. L. Vincent 1961-3-29 39 Butte Sacramento Valley Oroville-Chico Road, 1 mile east of Chico. 60 Comment
  JEPS120767  Lemna minuta Lowell Ahart 2013-9-20 19063 Butte About 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about 1 mile southeast of the Rice Experiment Station. Comment
  CHSC26760  Leontodon saxatilis subsp. longirostris M. S. Taylor; M. Hayes 1977-8-16 1444 Butte Along Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC71305  Lepechinia calycina Vernon H. Oswald 1998-6-24 9237 Butte West side of Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  JEPS63255  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 miles Southwest of Forest Ranch. 548 Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. 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
  SEINET10448587  Lepidium nitidum Mary Susan Taylor 1973-1 Taylor 58 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UCSB64000  Lepidium nitidum Fillinger, Jennifer 1991-4-2 Butte North Table Mountain; 6 mi. N of Oroville; W of Table Mountain-Cherokee Rd.; 40 yds. W of N Table Mt. gate 243 Comment
  CHSC33262  Lepidium pinnatifidum R. E. Preston 1981-6-19 95 Butte At roadside, 300 m w of Headquarters, Gray Lodge State Wildlife Area, ca. 13.5 km ssw of Gridley. 20 Comment
  CHSC82413  Lepidium strictum Lowell Ahart 2002-5-7 9615 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
  JEPS98448  Leptochloa fascicularis Lowell Ahart 2000-5-18 8372 Butte 4 1/2 air miles SW of Oroville (on bottom of the Clay Pit, about 1/8 mi W of Oroville Airport and Larkin Road) 36 Comment
  CAS-BOT-BC273947  Leptochloa fusca subsp. fascicularis Lowell Ahart 1986-11-9 5456 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
  CAS-BOT-BC273949  Leptochloa fusca subsp. fascicularis Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC273955  Leptochloa fusca subsp. fascicularis Herbert L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC110334  Leptochloa fusca subsp. fascicularis B. Castro 2011-10-19 1915 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek ca 0.6 mi downstream (W) of its crossing under the Cohasset Hwy bridge and ca 500 ft E of its confluence with Sheep's Hollow. Depression in low flat floodplain on N side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC51289  Leptochloa fusca subsp. fascicularis Lowell Ahart 1990-9-30 6607 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC84008  Leptochloa fusca subsp. fascicularis Lowell Ahart 2003-6-22 10298 Butte On the south side of Richvale Highway, about 50 yards east of railroad, Richvale. 32 Comment
  CHSC31826  Leptosiphon bicolor L. Ahart 1974-4-11 367 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC28978  Leptosiphon bolanderi R. A. Schlising 1980-3-17 3514 Butte E of Chico and SW of Paradise, along Skyway, on cliffs above Butte Creek. 213 Comment
  CHSC1279  Leptosiphon ciliatus V. Holt 1935-5-1 Butte Butte Creek canyon. 106 Comment
  CHSC2429  Leptosiphon ciliatus R. Carter 1965-6-21 251 Butte Found on Oroville-Quincy Rd. at Merrimac, 5.5 mi. N of Mountain House, E 10' from road and S 15' from creek. 1176 Comment
  CHSC2384  Leptosiphon filipes R. Carter 1965-3-23 172 Butte Found ca. 20' inside gate to Richardson Springs just off Cohasset Rd. 20' N of road. 167 Comment
  POM219474  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. 1500 Comment
  RSA754883  Lessingia nemaclada L. Ahart 2009-6-30 15965 Butte About 150 yards N of a small drainage, along the Guardian Rock Trail, about 150 yards SW of Pine Trail, about 1/2 air mile SW of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles NE of Chico. 399 Comment
  CAS-BOT-BC342062  Lessingia virgata Lowell Ahart 1981-9-27 3211 Butte North-east of Palermo 80 Comment
  CDA43061  Ligustrum sinense L. P. Janeway, B. Castro 2010-6-4 9993 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. Comment
  CHSC43045  Lilium washingtonianum subsp. washingtonianum L. P. Janeway 1987-6-20 2264 Butte SE-facing road cutbank above Rock Cr, 0.5 mi from Lumpkin Ridge Rd on rd to Mooreville Ridge. 1219 Comment
  CAS-BOT-BC133045  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  SJSU967  Limnanthes alba A. Retan 1948-5-1 Butte 10 mi W of Oroville Comment
  POM181724  Limnanthes alba H. F. Copeland 1923-4-12 618 Butte near Biggs Comment
  UC971834  Limnanthes alba subsp. alba Charles T. Mason Jr. 1949-4-23 1252 Butte 7 mi s Oroville (in ditch along e side of State Hwy 24) Comment
  UCD85026  Limnanthes alba subsp. versicolor Dena Grossenbacher; Joel Smith 2009-5-9 985 Butte 1/8 mile south of Lumpkin Ridge Road 1.5 miles east of Camp 18. National Forest. 1289 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
  SEINET12183346  Limnanthes douglasii Unknown 1978-1 4 Butte Table Mtn. ca 6 mi S on Cherokee Rd. from Hwy 70, W side of road, ca 5.5 mi n of Oroville; Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  RSA712987  Limnanthes douglasii subsp. nivea L. Ahart 2006-4-28 12542 Butte South part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  CHSC1009  Limnanthes douglasii subsp. rosea A. Goekler 1929-3-11 Butte Hooker Oak road. 60 Comment
  CHSC23531  Limnanthes douglasii subsp. rosea M. S. Taylor 1976-3-23 1030 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99 junc, ca. 11 mi n of Chico. 60 Comment
  HSC43353  Limnanthes douglasii subsp. rosea Maralyn O'Meara 1974-4-20 265 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  CHSC67543  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-16 3048 Butte Type Locality: W and adjacent to Hwy 99, S and adjacent to Gold Run Creek. Comment
  CHSC67545  Limnanthes floccosa subsp. californica James D. Jokerst 1988-3-15 3043 Butte Church site population N of Humboldt Rd., W of Bruce Rd., S of Hwy. 32. Comment
  HSC93612  Limnanthes floccosa subsp. californica James D. Jokerst 1980-3-27 520 Butte E of Cohasset Hwy. on S side of Richardson Springs Rd. 98 Comment
  CHSC67560  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3045 Butte Ca. 150 m W of Cohasset Rd. ca. 1/6 mi S of junction with Keefer Rd. Comment
  CHSC50688  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  UC1562434  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte dirt road about 1/2 mi e of Larkin Road about 1 mi s Oroville Airport 45 Comment
  CHSC38596  Linanthus dichotomus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 274 Comment
  CHSC47039  Linanthus dichotomus R. A. Schlising; J. D. Jokerst 1985-4-8 4462 Butte N of Hwy 70 crossing of Lake Oroville and SW of village of Yankee Hill. Comment
  UC907829  Linanthus parviflorus P. B. Kennedy 1929-5-4 Butte between Chico and Paradise (halfway up Hunnicut road) Comment
  CHSC92457  Linaria dalmatica subsp. dalmatica Lowell Ahart 2005-11-12 12484 Butte Flat area on the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CHSC51015  Lindernia dubia var. anagallidea Lowell Ahart 1990-7-4 6541 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC96950  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS124342  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CDA41688  Lindernia dubia var. anagallidea T. C. Fuller 1976-8-1 20164 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  SEINET10936269  Linum lewisii Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5226 Butte T20N R5E se sec 18. Along Foreman Creek Rd leading to Foreman Creek Boat-In Camp on Lake Oroville, off Hwy 162, ne of Oroville. Comment
  CHSC55621  Lipocarpha L. P. Janeway; C. A. Janeway 1986-10-4 1902 A Butte Gravel bar along Butte Creek ca 2 1/2 mi east of Skyway. 45 Comment
  JEPS95950  Lipocarpha aristulata Lowell Ahart 1999-8-13 8146 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
  SEINET10467512  Lipocarpha micrantha Lowell Ahart 1983-9-17 Ahart 4430 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  UC1135274  Lithocarpus densiflorus C. G. Albertus 1933-7-25 51 Butte 1 mi n Powellton; Chico Quad. 1097 Comment
  CAS-BOT-BC36588  Lithocarpus densiflorus var. echinoides A. A. Heller 1913-6-7 10798 Butte Near Stirling 1074 Comment
  CHSC30731  Lithocarpus densiflorus var. echinoides M. S. Taylor 1980-5-27 2642 Butte On trail from parking lot to Big Bald Rck, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC42953  Lithocarpus densiflorus var. echinoides Lowell Ahart 1987-7-8 5811 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC96229  Lithophragma bolanderi R. Fischer 2006-4-21 987 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at bottom of 10 Mile House Road, ca. 250 ft s of gated park property line.. 228 Comment
  CAS-BOT-BC435491  Lithophragma glabrum Lowell Ahart 1988-3-28 5950 Butte About 1/10 mile S of Lumpkin Ridge Road, about 1 1/2 miles E of Camp 18, about 8 miles E of Feather Falls 1280 Comment
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CHSC1655  Lithophragma parviflorum var. trifoliatum B. Hetherington 1935-3-27 Butte Foothills. Comment
  CHSC51107  Lithophragma parviflorum var. trifoliatum Gerald A. Winter 1989-4-15 12 Butte Ca. 100 yds w of Cherokee Road on Table Mountain, ca. 5 mi ne of Oroville. 396 Comment
  CAS-BOT-BC428447  Lithophragma trifoliatum A. A. Heller 1929-4-12 14830 Butte Slope south side of the Richardson Springs road near the second crossing of Mud Creek. Comment
  CHSC39659  Lithospermum californicum Lowell Ahart 1983-6-21 4090 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  UCR190828  Lithospermum californicum Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  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
  JEPS107767  Logfia gallica Lowell Ahart 2005-5-7 11787 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  JEPS115659  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road 440 Comment
  CHSC82719  Lolium multiflorum Tara Morgan 2002-4-23 46 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  CHSC29370  Lomatium caruifolium var. denticulatum Robert Schlising 1979-4-21 3371 Butte Richvale vernal pools, 1/4 mi s of jct Hwy 162 (e to Oroville ) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  RSA795765  Lomatium macrocarpum L. Ahart 2012-4-20 17897 Butte West side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 miles west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CDA38463  Lomatium marginatum T. C. Fuller 1962-5-17 8710 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC33347  Lomatium utriculatum Laurel L. Huey 1980-4-21 4 Butte Ca. 80 m se of Butte Creek at Covered Bridge. 125 Comment
  UC195445  Lomatium utriculatum A. A. Heller 1914-4-3 11259 Butte 8 mi. n. Oroville Comment
  CAS-BOT-BC240447  Lonicera hispidula H. F. Copeland 1939-7-8 s.n. Butte Humboldt Road in foothills 12 mi. east of Chico Comment
  CAS-BOT-BC240449  Lonicera hispidula Mrs. J. H. Morrison 1932-6-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC240686  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10465144  Lonicera interrupta Lowell Ahart 1985-6-17 Ahart 5065 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC200  Lonicera involucrata var. involucrata E. Walker 1932-4-19 Butte Concow reservoir. Comment
  SEINET10874139  Lotus argophyllus var. fremontii Lowell Ahart 1984-6-8 Ahart 4667 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  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
  SEINET5736944 Image available Lotus nevadensis Lowell Ahart 1985-1 5039 Butte Lake Oroville, at the Enterprise Launch Area and about 0.75 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  SEINET11268222  Lotus oblongifolius Vernon H. Oswald, Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd.; 0 1396 Comment
  SEINET10452002  Lotus purshianus Mary Susan Taylor 1979-8-4 Taylor 2171 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
  SEINET3563127 Image available Lotus purshianus Lowell Ahart 1981-8-11 3025 Butte North Honcut Creek, 1 mile N; 3 miles E of Honcut 50 Comment
  RSA769807  Lotus purshianus var. purshianus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  SEINET10452017  Lotus stipularis Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4646 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10452369  Lotus subpinnatus Mary Susan Taylor 1978-4-14 Taylor 1557 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
  CHSC11366  Ludwigia palustris Lowell Ahart 1969-9-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115647  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC198303  Lupinus Charles Piper Smith 1949-4-21 49118 Butte Cherokee Comment
  CHSC49842  Lupinus affinis Vernon Oswald 1990-4-4 4147 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. From a small group of plants near the edge of the cement launching ramp, slightly below the high-water line of the lake. 271 Comment
  SJSU10702  Lupinus albicaulis F. S. Gereb 1968-5-4 93 Butte 5 mi E of Chico Comment
  CHSC34686  Lupinus albifrons M. S. Taylor 1981-5-5 3605 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC901  Lupinus albifrons R. Carter 1964-3-23 64 Butte 5 mi. E of Chico Rd. on Cherokee Rd. on rocky bank on E side of road. 60 Comment
  CHSC93080  Lupinus albifrons var. albifrons L. P. Janeway; B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1051 Comment
  UC864953  Lupinus albifrons var. albifrons A. A. Heller 1938-4-23 15050 Butte between the Las Plumas Road and the summit on Highway #24, 20 mi e Oroville; e of Oroville 762 Comment
  CAS-BOT-BC196252  Lupinus albifrons var. eminens A. A. Heller; H. E. Brown 1902-5-8 5501 Butte Berry Canyon (Near Clear Creek) Comment
  JEPS119696  Lupinus bicolor Lowell Ahart 2012-5-2 17952 Butte West of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC865499  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 mi below Centerville (in Sierra foothills); Sierra foothills, below Centerville Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  UC725984  Lupinus latifolius var. columbianus A. A. Heller 1919-6-7 13224 Butte Snow Mountain 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
  CHSC90512  Lupinus microcarpus var. densiflorus J. Marr 1988-3-18 4 Butte 50 ft on n side of Pentz Magalia Hwy, 1/4 mi nw of Hwy 70, 12 mi n of Oroville. 228 Comment
  CHSC75366  Lupinus microcarpus var. microcarpus Jennifer Slater 1997-4-12 17 Butte Upland area at the Wirlitzer addition of the Vina Plains Preserve, approx. one mile west of Hwy 99. 67 Comment
  CHSC34687  Lupinus nanus M. S. Taylor 1981-4-14 3528 Butte NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi n of Oroville. 137 Comment
  CHSC90373  Lupinus nanus Paula J. Minton 1980-4-13 1 Butte Butte College, about 11 mi southeast of Chico, 1 mi north of Pentz Road and 1 mi west of Clark Road. 175 Comment
  CHSC90375  Lupinus nanus 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
  SEINET8057003  Lupinus nanus M. J. Williams 1967-4-22 s.n. Butte Table Mt., Cherokee Road near Oroville 610 Comment
  UC726774  Lupinus nanus A. A. Heller 1938-4-23 15046 Butte along the Feather River Highway near the bridge over the <Feather> River e Oroville; along the Feather River Highway nr bridge over river Comment
  SEINET10490164  Lupinus nanus subsp. menkerae Welgan 1979-4-15 WELGAN 11 Butte Pink corolla with a purplish banner; normally a corolla of blue and white. Scattered population, ca 6 mi n of oroville, .5 mi w of cherokee mtn rd. Open Field in foothill woodland. Soil a silty loam overlying rocks. 366 Comment
  CHSC3829  Lupinus nanus var. vallicola R. L. Adams 1964-4-12 72 Butte Junction Hwy. 32 and River Rd. on S. side 32. Comment
  POM193372  Lupinus polyphyllus subsp. superbus E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  JEPS108777  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west 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-BC329253  Lupinus stiversii Lowell Ahart 1982-6-15 3547 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls. 1000 Comment
  CHSC105797  Luzula cascadensis Lowell Ahart 2010-9-28 17260 Butte West edge of a 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC32365  Luzula macrantha J. D. Jokerst 1980-4-7 563 Butte E. of jct. of Upper Rocky Honcut Cr., and Swedes Flat Rd., (E of the town of Rackerby) SE of Oroville 10 mi. Comment
  JEPS119866  Luzula subsessilis Lowell Ahart 2012-5-12 18028 Butte About 400 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  SEINET10905122  Luzula subsessilis Mary Susan Taylor 1976-4-24 Taylor 1076 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  JEPS115184  Lychnis coronaria Lowell Ahart 2009-6-19 15935 Butte Along trail, onn the east side of Big Chico Creek, about 50 yards west ofTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC110328  Lycopus americanus B. Castro; Margie Graham 2006-8-25 1605 Butte Sacramento Valley. Ca 1.9 mi W of Highway 99 and 1 mi E of Richvale, immediately N of Richvale Hwy in Cherokee Canal. On E side of canal abt 120 ft in from toe of E levee. 32 Comment
  JEPS88581  Lycopus americanus Vernon H. Oswald and Lowell Ahart 1996-7-22 8079 Butte edge of farm rd. crossing branch of Angel Slough w. Refuge H.Q.'s (s.e. corner of Tract 1-Sanctuary 1, U.S. Fish & Wildlife Service parcel betw 7 Mile Lane & Sacramento R.); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC102795  Lythrum hyssopifolia Lowell Ahart 2009-6-30 15960 Butte West of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC27933  Lythrum hyssopifolia M. S. Taylor 1975-6-25 794 Butte Richardson Springs on Mud Creek, ca. 3 mi ne of Cohasset Hwy, ca. 6 mi n of Chico, ca. mi ne ne of the Hotel at Richardson Springs. 91 Comment
  CHSC28472  Lythrum hyssopifolia R. A. Schlising 1979-5-30 3428 Butte Richvale vernal pools. 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CDA18880  Lythrum salicaria Riley, Villegas 2000-5-24 PDR 1170754 Butte Vicinity of Wyman Ravine, on the westside and eastside of Lincoln Blvd. 0 Comment
  CHSC112696  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte Edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  CAS-BOT-BC342706  Madia elegans A. A. Heller; H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10871971  Madia exigua Lowell Ahart 1985-5-15 Ahart 4986 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC101764  Madia gracilis Lowell Ahart 2009-5-23 15722 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC97015  Madia gracilis L. P. Janeway 2007-7-9 9109 Butte Northern High Sierra Nevada. Plumas National Forest; near Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  POM219437  Madia gracilis subsp. gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  UC179652  Madia sativa subsp. dissitiflora A. A. Heller 1914-8-6 11643 Butte Chico meadows 1219 Comment
  CHSC32363  Madia subspicata J. D. Jokerst; M. S. Taylor, R. A. Schlising, D. Ikeda 1980-5-18 722 Butte Top of Cohasset Ridge along the S edge above Mud Cr. Comment
  CHSC67640  Madia subspicata James D. Jokerst 1980-5-28 806 Butte Ca. 0.25 mi SW of junction of Lower Wyandotte Rd. and Foothill Blvd. SE of Oroville. Comment
  SEINET10475284  Malacothrix floccifera Mary Susan Taylor 1980-7-6 Taylor 3067 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  CHSC80019  Malva nicaeensis L. P. Janeway; B. Castro 1999-6-4 6454 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  CHSC66080  Malva parviflora Vernon H. Oswald 1996-5-23 7637 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 7.3 and Tract 10.2, Sanctuary I. 33 Comment
  SEINET10448088  Marah fabacea Mary Susan Taylor 1973-1 Taylor 51 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10498135  Marrubium vulgare Mary Susan Taylor 1975-2-16 Taylor 386 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  CHSC11367  Marsilea vestita Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31380  Matricaria discoidea J. D. Jokerst 1979-4-20 1208 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd, and the E edge of mt. 396 Comment
  SEINET10452580  Medicago hispida Mary Susan Taylor 1975-4-25 Taylor 504 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CDA42859  Medicago lupulina L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-1 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC31876  Medicago polymorpha L. Ahart 1976-5-2 1086 Butte North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35693  Medicago polymorpha J. D. Jokerst 1982-4-19 1532 Butte Top of North Table Mountain, ca 1/4 mi N of Cherokee Rd at the mesa's E edge. Comment
  CHSC38517  Medicago polymorpha Vernon Oswald 1983-4-4 261 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.0 mi e of the power lines. 335 Comment
  CHSC42527  Medicago polymorpha Lowell Ahart 1987-4-30 5493 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  UC171941  Medicago sativa P. L. Ricker 1912-5-9 3920 Butte Chico Comment
  CHSC61371  Melica aristata Lowell Ahart 1993-7-22 7075 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  CAS-BOT-BC269381  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CAS-BOT-BC269382  Melica californica A. A. Heller 1915-4-20 11860 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CAS-BOT-BC269386  Melica californica Clarence R. Quick 1964-7-9 64 -64 Butte North of Jarbo Gap Comment
  CHSC67412  Melica californica James D. Jokerst; R. A. Schlising 1985-4-8 2218 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  JEPS113256  Melica californica Lowell Ahart 2007-5-29 13924 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northea 598 Comment
  SD122518  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CHSC30544  Melica torreyana J. D. Jokerst 1980-3-23 490 Butte Along edges of old Cherokee Flume. 0.5 mi W of S end of Bridge on Hwy 70 over W Branch of Feather River. 10 mi N of Oroville. Comment
  POM27431  Melilotus albus C. C. Bruce 1897-04 1850 Butte Butte Creek Comment
  CHSC80643  Melilotus officinalis Lowell Ahart 2001-6-1 8747 Butte On the south side of Biggs-Princeton Road, about 1/2 mile east of Butte Creek, about 8 miles west of Biggs. 21 Comment
  SEINET13710343  Melissa officinalis Lowell William Ahart, Lowell William Ahart 2002-1 9931 Butte 2 Mi. N Town of Feather Falls (39 Deg 36'44.9'N, 121 Deg 15'59.8"W) 2433 Ft. 742 Comment
  CHSC102616  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
  RSA755347  Mentha arvensis L. Ahart 2009-7-9 16009 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC51266  Mentha canadensis Lowell Ahart 1990-10-3 6622 Butte Growing on the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek bridge across Lake Oroville. 259 Comment
  CHSC66441  Mentha pulegium Vernon Oswald; Lowell Ahart 1996-6-10 7756 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, Sactuary I. 33 Comment
  CHSC43296  Mentha spicata Lowell Ahart 1987-8-30 5868 Butte Along the north fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS87131  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  CHSC102979  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico. 68 Comment
  SEINET10480639  Mentzelia laevicaulis Mary Susan Taylor 1975-10-3 Taylor 946 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
  RSA4124  Mertensia ciliata var. stomatechoides E. B. Copeland 1930-6-23 450 Butte Jonesville. 1500 Comment
  CAS-BOT-BC428757  Micranthes californica Lowell Ahart 1980-3-26 2054 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CAS-BOT-BC428759  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2042 Butte Little Chico Comment
  CHSC65437  Micranthes californica Vernon Oswald 1983-3-16 190 Butte Upper Bidwell Park, Chico, near the South Rim Trail ca. 1000 ft w of the power lines. 134 Comment
  CHSC48908  Micranthes odontoloma Vernon Oswald 1987-7-29 3165 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the se/S6. 1752 Comment
  CAS-BOT-BC429204  Micranthes oregana F. N. Bassett 1923-6-21 s.n. Butte Jonesville via Butte Meadows Comment
  SEINET10971130  Micropus californicus Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4852 Butte Serpentine Point, west of Yankee Hill. Comment
  CAS-BOT-BC348464  Micropus californicus var. californicus Lowell Ahart 1985-5-15 4994 Butte West of a small stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC33366  Micropus californicus var. californicus Steven Azevedo 1980-4-16 18 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC1291  Microsteris gracilis J. Gulick 1929-4-21 Butte Chico Creek Canyon. 152 Comment
  SEINET7073609  Mimulus aurantiacus A. G. Vestal 1955-5-20 s.n. Butte About 5.6 miles south of Magalia on the Pentz Road [Pentz - Magalia Highway]. UTM Zone 10, 6223320mE, 4398975mN. Coordinate datum: NAD27. Comment
  HSC72762  Mimulus aurantiacus var. grandiflorus M. S. Taylor 1981-4-8 3481 Butte E side of Dark Canyon Rd., 2.2 mi. S of jct. with Big Bend Rds., 3 mi. S of Jarbo Gap on Hwy. 70 427 Comment
  RSA339151  Mimulus aurantiacus var. grandiflorus Margaret J. Williams, W. Roderick 1984-5-25 84- 24 -1 Butte Feather River Canyon, Hwy 70, near arch Rock Tunnel Comment
  JEPS117290  Mimulus breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  JEPS121953  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  UCD122531  Mimulus constrictus P. Thompson 1996-4-26 39 Butte Hwy 70. Belden. Along the south entrance to the Pacific Crest Trail. 1000 Comment
Read comments Feb 25 2013
  POM43822  Mimulus douglasii C. C. Bruce 1897-01 2100 Butte Chico. Comment
  CHSC43856  Mimulus glaucescens L. P. Janeway 1988-2-21 2586 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  SEINET12334054  Mimulus glaucescens Unknown 1974-1 20 Butte Cohasset Rd, N ca 7.5 mi from Chico Muni. Airport & 7.5 mi from Cohasset 305 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte 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 Comment
  SBBG28945  Mimulus guttatus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  RSA60037  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  SEINET8246545  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Sierra Nevada at Chico Meadows. 1219 Comment
  CHSC33113  Mimulus moschatus M. S. Taylor 1981-5-15 3747 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70; near shady creek area. 1158 Comment
  POM193322  Mimulus primuloides var. pilosellus E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  UC600648  Mimulus tilingii H. F. Copeland 1932-8-22 Butte spring on ridge se head of Butte Creek; Jonesville 2100 Comment
  POM5144  Mimulus torreyi Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  RSA4111  Mimulus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  SEINET10570286  Mimulus torreyi Mary Susan Taylor 1979-10-5 Taylor 2235 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  UC196165  Mimulus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville rd 8 mi from Chico Comment
  JEPS110438  Minuartia californica Lowell Ahart 2006-4-27 12540 Butte Side of a bank, about 100 yards south of the fence and tower, pasture fields, about 4/5 mile north and 1 3/4 miles east of Honcut 49 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
  CHSC93501  Minuartia cismontana Lowell Ahart 2006-5-8 12591 Butte About 200 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 347 Comment
  JEPS110247  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 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
  CAS-BOT-BC388610  Minuartia douglasii John Thomas Howell 1978-4-17 52838 Butte Table Mountain 381 Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40638  Mollugo verticillata Lowell Ahart 1985-10-12 5204 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC51002  Mollugo verticillata Lowell Ahart 1990-7-4 6538 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC80020  Mollugo verticillata L. P. Janeway; B. Castro 1999-6-4 6451 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  JEPS115056  Mollugo verticillata Lowell Ahart 2007-11-3 14569 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
  JEPS42874  Mollugo verticillata W. L. Jepson 1939-8-17 19459 Butte near Oroville (Feather River); Feather River 45 Comment
  POM68686  Mollugo verticillata C. C. Bruce 1897-06 1933 Butte [No location information on label.] Comment
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 Comment
  CHSC93083  Monardella sheltonii L. P. Janeway 1994-6-23 4672 Butte Northern Sierra Nevada Foothills. Pinkston Canyon Road about 400 ft east of Concow Road. 563 Comment
  JEPS108795  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CHSC54877  Monochoria vaginalis Vernon H. Oswald; Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  RSA755352  Montia fontana L. P. Janeway 2008-3-18 9237 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC50417  Montia fontana subsp. amporitana Vernon Oswald; Lowell Ahart 1990-6-20 4301 Butte High Lakes Rd ca. 0.5 mi south-southwest of Carr Mine, east of Philbrook Reservoir. Common among Veratrum on a moist meadow just south of the road. 1828 Comment
  CAS-BOT-BC445134  Montia parvifolia Mrs. C. C. Bruce 1897-6-1 1117 Butte Forest Ranch Comment
  RSA129344  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow. 1341 Comment
  UCD86725  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 miles SSE of Butte Meadow. 1493 Comment
  CHSC110396  Muhlenbergia mexicana Lowell Ahart 2012-9-28 18471 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC94531  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, 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
  UC1563261  Muhlenbergia mexicana unknown 1990-10-21 6635 Butte about 1/2 mi w Gold Flat (about 1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  SEINET10596286  Muhlenbergia minutissima Edwin B. Copel 1929-7-29 Copeland 341 Butte Above Jonesville. Ephemeral on gravelly back of pond, as water of pond retreats during summer. Comment
  CAS-BOT-BC274931  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CHSC21042  Muhlenbergia rigens M. S. Taylor 1975-10-4 963 Butte On s side of Kunkle Reservoir, ca. 200 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CDA32552  Muhlenbergia rigens M. J. Stewart 1976-9-21 Butte Railroad right-of-way between West Liberty St. and Locust Rd., Gridley. 0 Comment
  CHSC10543  Myosurus minimus Lowell Ahart 1971-4-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10536214  Myosurus minimus Mary Susan Taylor 1974-4-24 Taylor 187 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC33701  Myosurus sessilis L. Ahart 1981-4-6 2747 Butte SE of Gray Lodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  CHSC37394  Myriophyllum spicatum R. A. Schlising 1980-8-31 3978 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC49673  Najas gracillima Vernon Oswald 1988-7-22 3613 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC49675  Najas guadalupensis V. Oswald 1988-6-8 3360 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  CHSC88162  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1689 Comment
  JEPS102936  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
  POM95650  Nasturtium officinale C. C. Bruce 1898-05 2460 Butte Springer. Comment
  UC196281  Navarretia divaricata A. A. Heller 1914-6-22 11499 Butte edge of forest about Chico Meadows Chico Meadows 1219 Comment
  CAS-BOT-BC230290  Navarretia eriocephala A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon (near Clear Creek) Comment
  SBBG128187  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Guardian Rock Trail, ca. 0.25 mi (air) SW of the intersection of Ten Mi House Rd and Hwy 32, Upper Bidwell Park, ca. 10 mi NE of Chico 398 Comment
  SEINET179620  Navarretia filicaulis H. F. Copeland 1932-6-24 unknown Butte Near Hog Springs, about 5 miles north of Chico Comment
  JEPS107886  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville 91 Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 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
  JEPS126592  Navarretia heterandra Lowell Ahart 2016-5-24 20846 Butte About 200 yards west of Loma Rica Road, 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
  UC762162  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico Comment
  RSA716151  Navarretia intertexta L. Ahart 2005-7-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC82415  Navarretia intertexta subsp. intertexta Lowell Ahart 2002-5-7 9627 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
  JEPS115708  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15754 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on east side of Ten Mile House Road, just northeast of Guardians Trail 381 Comment
  CAS-BOT-BC230333  Navarretia leucocephala Robert F. Holland 1976-4-13 274 Butte W side of State Highway 99, 1 mile N of junction with State Highway 162, E of Richvale Comment
  SEINET14151956  Navarretia leucocephala subsp. leucocephala B. Ertter, J. Strachan 1980-5-5 3256 Butte North of house; Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville. 30 Comment
  CHSC52109  Navarretia nigelliformis R. A. Schlising 1979-6-3 3431 Butte Richvale vernal pools, 1/4 mi s jct Hwy 99 and 162 to Oroville, across from Thermalito Afterbay. Comment
  CHSC45358  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-4-18 3274 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CAS-BOT-BC233625  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  CHSC105275  Navarretia pubescens Lowell Ahart 2010-6-20 16834 Butte About 3/8 miles north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 55 Comment
  CHSC28132  Navarretia pubescens J. D. Jokerst 1979-4-28 208 Butte Ca 200 yds nw of Rock Crk. (intersection of Rock Crk. Rd. and Cohasset Hwy.). 106 Comment
  CHSC69482  Navarretia pubescens James D. Jokerst 1992-5-19 3366 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On a terrace at powerlines on S side of Sheep Hollow. 97 Comment
  RSA717288  Navarretia pubescens L. Ahart 2005-5-28 11819 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC48656  Navarretia viscidula Vernon Oswald 1985-5-28 1786 Butte Oroville-Quincy Hwy slightly n of Simmons Rd. Beside the road. 304 Comment
  UC196279  Navarretia viscidula A. A. Heller 1914-5-22 11427 Butte about 5 mi n Chico (on the Richardson Springs road) Comment
  CHSC68661  Nemacladus capillaris Lowell Ahart 1997-5-29 7741 Butte About 100 yards south of the dirt road and basalt quarry, south of Lumpkin ridge Road, about 1 and 1/4 miles east of Camp 18, east of Feather Falls. 1280 Comment
  RSA0006287  Nemacladus montanus E. Brooks s.n. Butte Enterprise. Comment
  CHSC24148  Nemophila heterophylla B. Bunge 1976-4-12 11 Butte Ca. 25 yd. n of Butte Creek and 25 yd. w of Covered Bridge; ca. 8 mi. e of Chico. 106 Comment
  CHSC31114  Nemophila heterophylla Leslie Steidl 1980-4-3 13 Butte Ca. .5 mi nw of Lumpkin Rd. on Island Bar Hill Rd., and 3 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  UC107251  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  UC126923  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte near Oroville (in the foothills of the Sierra Nevada); foothills Sierra Nevada, nar Oroville 150 Comment
  CHSC50550  Nemophila parviflora var. austiniae Vernon Oswald 1990-7-3 4345 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CHSC31688  Nemophila pedunculata L. Ahart 1973-3-7 163 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38461  Nemophila pedunculata Vernon Oswald 1983-1-30 54 Butte Upper Bidwell Park, Chico, along the North Rim Trail at the head of the ravine at the Rifle Range. 188 Comment
  CHSC39933  Nemophila pedunculata M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5400 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS107913  Nemophila pedunculata Lowell Ahart, P. Maslin, S. Green, J. Guardino, J. Dittes 2005-2-6 11554 Butte Butte Creek Ecological Reserve. About 50 yards east of Chico Canyon Road, about 1/2 mile west of Highway 32, about 8 miles northeast of Chico 242 Comment
  UC726912  Nemophila pedunculata A. A. Heller 1929-3-14 14810 Butte near Hooker Oak; near Hooker Oak Comment
  CHSC113399  Nemophila spatulata Lowell Ahart 2014-7-4 19555 Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. 1341 Comment
  CHSC32130  Nicotiana acuminata var. multiflora L. Ahart 1978-7-15 1783 Butte Near the garden; Peter Ahart Ranch, Honcut. 50 Comment
  CHSC61338  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte At Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  SEINET10865524  Nicotiana bigelovii Mary Susan Taylor 1975-7-4 Taylor 832 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  CHSC105957  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  SBBG25316  Notholithocarpus densiflorus var. densiflorus F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  CHSC95360  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8889 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 Comment
  CHSC2840  Odontostomum hartwegii David Prall 1965-4-25 27 Butte N side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  SBBG57427  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi N of Chico on the Richardson Springs rd Comment
  UC672088  Odontostomum hartwegii Herbert L. Mason 1927-5-10 3710 Butte n.e. of Oroville (Table Mt., summit of plateau); Table Mt. Comment
  UC725394  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte slope near Chico airport (in elevated region above alluvial valley proper) Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  RSA401999B  Orthocarpus erianthus J. Doty 1969-4-1 619 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  SEINET10549699  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-18 Taylor 2533 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC30703  Osmorhiza chilensis M. S. Taylor 1980-5-27 2650 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  UC1594566  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  CHSC20516  Oxalis rubra M. S. Taylor 1975-6-25 808 Butte In lawns, 1456 Arcadian, Chico. 60 Comment
  CHSC25438  Oxypolis occidentalis Marc Hayes; Warner 1977-9-11 74 Butte Ca. 10 m n of Humboldt Rd., exactly 6.9 mi from the junction of Humboldlt Rd. and Hwy 32 (towards Butte Meadows). 1219 Comment
  CAS-BOT-BC316885  Packera eurycephala var. lewisrosei John Thomas Howell 1978-4-18 52847 Butte Magalia 731 Comment
  CAS-BOT-BC316890  Packera eurycephala var. lewisrosei Lewis Samuel Rose 1954-5-31 54085 Butte Feather River Canyon, near Pulga 396 Comment
  CHSC78363  Panicum acuminatum var. acuminatum Lowell Ahart 2000-6-27 8514 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC4359  Panicum capillare R. L. Smith 1966-5-28 7 Butte US Plant Introduction Station 5 mi sw of Chico. Comment
  POM181470  Panicum capillare H. F. Copeland 1923-8-9 848 Butte Near Chico Comment
  CDA13828  Panicum dichotomiflorum G. F. Hrusa, T. D. Wilfred 1996-9-5 13556 Butte Butte Basin; Occasional on wet, open bank of Butte Creek immed. below Western Canal District Dam. Comment
  CHSC41981  Panicum dichotomiflorum Lowell Ahart 1986-11-14 5462 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  UC1153811  Panicum dichotomiflorum subsp. dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  CHSC45108  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  CHSC90964  Parentucellia viscosa L. P. Janeway 2005-5-9 8384 Butte Northern Sierra Nevada Foothills. Northwest side of Hwy 70 0.6 km southwest of Pentz Road. 207 Comment
  JEPS98570  Parentucellia viscosa Lowell Ahart 2000-6-6 8456 A Butte 5 mi(air)E of;in a meadow on 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 Oroville Dam 304 Comment
  CAS-BOT-BC259621  Paspalum dilatatum John Thomas Howell 1959-9-20 34668 Butte Eastern outskirts of Oroville 60 Comment
  UC88561  Paspalum distichum Vernon H. Oswald and Lowell Ahart 1996-6-10 7759 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (near the center of the w side of Tract 7.1, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CAS-BOT-BC202817  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 5 miles north-east of Oroville 609 Comment
  CAS-BOT-BC202819  Paxistima myrsinites Lowell Ahart 1982-9-13 3827 Butte Along the edge of the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC108988  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 361 Comment
  CHSC40767  Pectocarya pusilla Ahart; Jokerst 1985-5-10 4960 Butte In the road gutter, along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC96237  Pectocarya pusilla R. Fischer 2006-4-10 992 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep rocky, spring covered, hillside overlooking Big Chico Creek. 518 Comment
  UC177581  Pedicularis attollens H. M. Hall 1914-7-22 9771 Butte near Jonesville (on Willow Creek); Willow Creek 1554 Comment
  UCR133597  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  CHSC9267  Pedicularis densiflora D. C. Burns 2002-3-20 103 Butte Ca. .4 mi e of the intersection of Cohasset rd. and Vilas rd., growing 10 yds, n side of Vilas rd. 381 Comment
  SEINET10549178  Pedicularis densiflora Mary Susan Taylor 1981-3-16 Taylor 3402 Butte T21N R6E sw sec 18. Brush Creek quad. S side of logging rd, ca. 50 yds n of its jct with 21N31Y, ca. 0.5 mi sw of Bald Rock Rd, ca. 1.5 mi ssw of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC10709  Pellaea andromedifolia Lowell Ahart 1966-2-25 Butte Near Enterprise. 213 Comment
  CHSC39816  Pellaea andromedifolia Ruby Gist 1935-3-1 Butte Chico. Comment
  CAS-BOT-BC67600  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, 500 Comment
  CHSC33896  Pellaea mucronata M. S. Taylor 1981-5-15 3733 Butte N side of Feather River Hwy 70, at Plumas NF boundary, ca. 2 mi ne of Jarbo Gap. 609 Comment
  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
  RSA780086  Penstemon breviflorus subsp. breviflorus C. C. Bruce 1897-06 2010 Butte Big Chico Comment
  CHSC37271  Penstemon deustus var. suffrutescens L. Ahart 1982-6-15 3583 Butte Ca. 1.5 mi e of Camp 18, ca. 18 mi e of Feather Falls. 1000 Comment
  HSC66346  Penstemon gracilentus M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3209 Butte Humboldt Peak, on E side 2155 Comment
  SBBG27142  Penstemon laetus D. D. Keck 1930-7-25 981 Butte 4 mi W of Forbestown 762 Comment
  NY604513  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  UC1063502  Penstemon laetus var. leptosepalus P. L. Johannsen 1936-7-16 917 Butte 1 3/4 mi ese Butte Mdws; Lassen National Forest, Paynes Creek Quad. Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  CAS-BOT-BC245637  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte About 0.5 mi. S of Bald Mountain, ca. 4.5 mi. NE of Stirling City, Sierra Nevada 1615 Comment
  JEPS109969  Penstemon personatus Dean W. Taylor 2006-7-13 19565 Butte Bald Mountain; along Concow Road (Forest Road 25N02) ca. 1 mile north of the summit fire lookout, at logging road junction with ''T'' line 1737 Comment
  SEINET10548096  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 A Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  SD4595  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville, on gravel bars by Butte Creek 1500 Comment
  CHSC23460  Pentagramma triangularis J. R. Lee 1974-4-15 1 Butte Found on n side of Upper Bidwell Park road w of Salmon hole and 4.3 mi from the Chico Municipal golf Course. 121 Comment
  CHSC30015  Pentagramma triangularis subsp. semipallida L. Ahart 1980-5-11 2243 Butte About 1/4 mi s of Kunkle Reservoir, ca. 3 mi se of Paradise. 500 Comment
  CHSC32116  Pentagramma triangularis subsp. semipallida L. Ahart 1976-7-7 1171 Butte Along edge of rd to Little North Fork of the Feather River, ca. 2 mi s of Junction House. 1219 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC106574  Pentagramma triangularis subsp. triangularis C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC38617  Persicaria hydropiper Vernon Oswald 1983-8-19 1012 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft upstream from the flood-control gates. 79 Comment
  UCD150369  Persicaria hydropiperoides William Anderson 1963-9-27 s.n. Butte Sanborn Slough. Tule Goose Gun Club. 17 Comment
  CAS-BOT-BC418948  Persicaria lapathifolia Ira L. Wiggins 1928-9-9 3332 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SBBG128022  Persicaria lapathifolia L. Ahart 2011-8-17 17628 Butte ca. 10 yards N of the trail, N of the crossing and on the E side of Big Chico Crk, ca. 50 yards W of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 203 Comment
  CHSC31170  Persicaria maculosa M. S. Taylor 1978-9-8 1883 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CAS-BOT-BC419177  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte Hills 8 miles north of Oroville. Along Dry Creek about 5 miles south of Pentz Comment
  CAS-BOT-BC419179  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte Hills 8 miles north of Oroville Comment
  UCD99569  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte 8 miles north of Oroville Comment
  UCD99744  Persicaria maculosa J. M. Tucker 1953-8-28 2683 Butte Biggs Rice Experiment Station. Comment
  CDA42947  Persicaria punctata L. Ahart 2012-10-28 18523 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
  CHSC94786  Persicaria punctata Lowell Ahart 2006-10-8 13428 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC109071  Petrorhagia dubia Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17907 Butte On the north side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  HSC43129  Petrorhagia dubia Maralyn O'Meara 1974-4-20 282 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  SEINET10932244  Petrorhagia velutina Mary Susan Taylor 1982-5-2 Taylor 4382 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 Comment
  CHSC69213  Phacelia egena J. D. Jokerst 1984-5-19 2022 Butte Along edge of road cut for Pulga Road within 100 feet of its junction with Highway 70 in the canyon of the North Fork of the Feather River. Comment
  UC1047036  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 341 Butte Feather River Hwy about 12 mi ne Oroville (base of roadcuts) 152 Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  CHSC93982  Phacelia mutabilis R. D. Fischer 2004-6-20 769 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, YPF at north end of Camp Lassen. 1371 Comment
  UC426939  Phacelia mutabilis E. B. Copeland 1930-7-13 446 Butte Jonesville 1550 Comment
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville Comment
  UC600781  Phacelia mutabilis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  CHSC34792  Phacelia procera M. S. Taylor; L. Ahart 1981-8-16 4207 Butte N side of 25N04, near upper Big Kinshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  UC392196  Phacelia procera E. B. Copeland 1929-7-29 Butte above Jonesville (by creek); Butte Creek 1700 Comment
  CHSC48474  Phacelia purpusii Vernon Oswald 1983-6-22 733 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. 1158 Comment
  SD4079  Phacelia racemosa E. B. Copeland 11-13 Jul 1931 Butte Jonesville, on bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  SEINET10660064  Phalaris aquatica Unknown 1966-5-25 Anonymous s.n. Butte 7 mi. E of Oroville, ca. 100 yds off Wyandotte La Porte Rd. on Feathervale on E side of road. Dry soil Comment
  UC1594547  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  CHSC46276  Phalaris minor Vernon Oswald 1989-5-1 3752 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), at the n gate on Biggs-Afton Hwy just e of Butte Creek. Roadside. 18 Comment
  CHSC58291  Phalaris paradoxa Lowell Ahart 1992-5-23 6776 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC37631  Philadelphus lewisii T. B. Devine 1979-10-5 598 Butte Feather River Canyon, 3/4 mi S of Arch Rock Tunnel, S of Hwy 70 adjacent to PG and E rest stop, along Bear Ranch Creek. 548 Comment
  SEINET10482893  Philadelphus lewisii subsp. californicus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4080 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
  CHSC28564  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi w of Lake Madrone. 997 Comment
  CHSC87951  Phleum pratense Lowell Ahart 2004-6-22 11124 Butte On the north side of Hupp Coutolenc Road, about 1/2 mile north of Paradise Lake, about 1/2 mile northeast of De Sabla Reservoir, about 4 miles (air) southwest of Stirling City. 821 Comment
  SEINET10934986  Phleum pratense Mary Susan Taylor 1982-6-24 Taylor 4728 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  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
  CHSC31435  Phoradendron libocedri L. Ahart 1980-9-10 2622 Butte Along Bean Creek Rd, ca. 1 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC33801  Phoradendron libocedri M. S. Taylor 1981-4-8 3509 Butte On serpentine, N side of spur rd, ca. 1/3 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  JEPS98508  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC141118  Phoradendron serotinum subsp. macrophyllum G. P. Rixford 1914-10-1 s.n. Butte Bidwell Park, Chico Comment
  JEPS104307  Phoradendron villosum Lowell Ahart 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, ca 200 yd e of Parking Area O, Upper Bidwell Park, ca 4 1/2 mi e of Manzanita Avenue, Chico. 182 Comment
  CHSC49448  Phyla nodiflora var. nodiflora Vernon Oswald 1987-7-30 3172 Butte Rancho Arroyo Chico. Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  UCR133596  Physalis lancifolia H. F. Copeland 1923-8-13 809 Butte Nelson, Railroad Right of Way 37 Comment
  CAS-BOT-BC140562  Physocarpus capitatus Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  CHSC102824  Phytolacca americana Lowell Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS115126  Phytolacca americana Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  SEINET10449366  Pieris japonica Mary Susan Taylor 1975-5-6 Taylor 554 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
  CAS-BOT-BC76938  Pilularia americana Lowell Ahart 1980-4-19 2092 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS98331  Pilularia americana Lowell Ahart 2000-5-21 8378 Butte 10 air miles NW of: slickens from the Cherokee mine, E side of Clark Road (Hwy 191), about 200 yds S of Dry Creek Oroville; ; <coords cont.: NW 1/4> 60 Comment
  UC1609400  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte ca. 2 mi w Biggs (on n side of Biggs Princeton Rd.) 30 Comment
  SEINET10530358  Pilularia americana Mary Susan Taylor 1979-5-6 Taylor 2002 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  LA6139  Pinus contorta subsp. murrayana E. B. Copeland; 1929-7-15 334 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CHSC27190  Pinus mugo P. Moyer 1971-10-24 45 Butte Front lawn Admin. Bldg. On CSUC campus. 60 Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  NY62730  Pinus sabiniana Anonymous 1925-7-22 s.n. Butte Chico 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
  CAS-BOT-BC254382  Piptatherum micranthum Lowell Ahart 1984-6-10 4690 Butte Along the edge of a new subdivision road about 1 mile SE of Hurleton, 1/12 mile E of the Oak Grove Cemetary, about 10 miles E of Oroville 500 Comment
  CHSC40292  Piptatherum miliaceum Ahart; Jokerst 1985-5-10 4965 Butte About 1/4 mile west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC100465  Pistacia atlantica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15424 Butte On the southeast side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS120072  Pistacia atlantica Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC102375  Pistacia vera L. P. Janeway 2009-10-13 9950 Butte Upper Bidwell Park, Chico; south side of Big Chico Creek, along South Rim Trail/Annie Bidwell Trail 155 m east-northeast of its start at the east end of Centennial Ave. and Chico Canyon Road. 87 Comment
  CHSC21379  Pittosporum tobira M. S. Taylor 1975-6-22 784 1/2 Butte Hedge on s side of Holt Hall, California State Univeristy, Chico, ornamental. Comment
  SEINET10529830  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2316 A Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 Comment
  SEINET10529833  Pityrogramma triangularis Mary Susan Taylor 1980-7-6 Taylor 3079 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET10529947  Pityrogramma triangularis var. pallida Mary Susan Taylor Taylor 984 Butte Bidwell Park, Chico. Comment
  UC725374  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte near Chico airpost 91 Comment
  UC78127  Plagiobothrys austiniae Mrs. R. M. Austin 1896-1 Butte Comment
  UCD120768  Plagiobothrys austiniae Robert E. Preston 1990-3-11 594 Butte Chico, N end of Cactus Ave. 76 Comment
  CHSC38275  Plagiobothrys fulvus Vernon Oswald 1983-3-14 180 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. Beside the jeep trail. 320 Comment
  HSC100811  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte ~0.25 mi. S of the parking area, North Table Mountain, 4.5 (air) mi. NE of Oroville. 372 Comment
  UC480695  Plagiobothrys fulvus H. F. Copeland 1929-5-4 1128 Butte in fields near Chico Comment
  SEINET12320808  Plagiobothrys fulvus Unknown 1974-1 15 Butte adjacent to Fern Bank area, upper Bidwell Park Comment
  POM197245  Plagiobothrys fulvus var. campestris H. F. Copeland 1929-4-5 1128 Butte Near Chico. 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
  CHSC35064  Plagiobothrys glyptocarpus R. A. Schlising 1981-4-11 4020 Butte Chico, between Hwy 32 and Humboldt Road. 76 Comment
  CHSC43392  Plagiobothrys glyptocarpus Lowell Ahart 1979-5-7 1856 Butte Near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  SEINET10837185  Plagiobothrys glyptocarpus Mary Susan Taylor 1984-4-6 Taylor 5408 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS108838  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS117189  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16773 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  CHSC28992  Plagiobothrys greenei J. D. Jokerst 1980-3-27 522 Butte N of Chico Muni Airport, E of Cohasset Hwy. 97 Comment
  CHSC46781  Plagiobothrys greenei Lowell Ahart 1980-5-4 2175 Butte On the bottom of a small vernal pool and along small swales in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  JEPS103587  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  SBBG28845  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte W of Wick's Corner N of Oroville Comment
Read comments Sep 22 2013
  JEPS119703  Plagiobothrys nothofulvus Lowell Ahart 2012-5-2 17973 Butte West of the Government Pole Line, Upper Bidwell Park, about 3/4 mile east of Chico. Comment
  CHSC46768  Plagiobothrys shastensis Lowell Ahart 1979-5-20 1877 Butte Along the edge of a large wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC196291  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  CHSC54380  Plagiobothrys stipitatus var. micranthus M. Bailey 1991-4-19 565 Butte At margin of seasonal drainage ca 200 ft e of Williams Road and ca 1/4 mi n of Pentz Road; near Wallis Ponds. 85 Comment
  CHSC75256  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1999-5-21 8075 Butte On the sides an bottom of a drain ditch in a pasture field, on the east side of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC87206  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10730 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  OBI20602  Plagiobothrys stipitatus var. micranthus Carl B. Wolf 1937-5-14 8674 Butte Sacramento Valley, 5 mi NW of Chico on Hamilton City Rd 46 Comment
  RSA768983  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte West side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 air miles northeast of Chico 396 Comment
  JEPS117202  Plagiobothrys stipitatus var. stipitatus Lowell Ahart 2010-5-22 16709 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 385 Comment
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 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
  CHSC113212  Plantago coronopus Lowell Ahart 2014-4-15 19357 Butte Below the high water line of Lake Oroville, about 20 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 282 Comment
  CHSC96224  Plantago coronopus R. Fischer 2006-5-20 975 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found in a vernal drainage along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  SEINET6990023  Plantago coronopus W. P. Vestal, A. G. Vestal 1963-5-9 s.n. Butte About 11 miles southeast of Chico, at lower west-facing slope of lava mesas, close to hills. Comment
  CHSC118550  Plantago elongata Lowell Ahart 2017-2-27 21384 Butte Along a poor road, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  SEINET3449642  Plantago elongata Unknown 2003-3-31 10027 Butte Oroville, Oroville, about 5 air miles southwest, about 1.25 miles south of the Oroville Airport, about 300 yards west of Larkin Road, north side of the access road to the boat ramp at the Thermalito Afterbay 40 Comment
  CHSC75389  Plantago erecta Jennifer Slater 1997-4-12 15 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  SEINET8205338  Plantago erecta Theresa Costa 1982-4-15 11 Butte 7 mi. W of Oroville; 20 ft N table Mtn. Rd., parallel to Hwy 70. Comment
  CHSC34246  Plantago lanceolata M. S. Taylor 1981-8-15 4180 Butte Weed lot on n side of the Skyway, Inskip. 1463 Comment
  UC102803  Plantago lanceolata Mrs. R. M. Austin May 1896 290 Butte Little Chico Creek Comment
  UCD124510  Plantago major L. E. Hazeltine 1916-6-5 s.n. Butte Chico. Comment
  CHSC19939  Plectritis ciliosa M. S. Taylor 1975-3-10 415 Butte On bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  CDA12066  Plectritis macrocera G. F. Hrusa, J. Hart 1989-4-15 5919 Butte Table Mountain; Coal Canyon, North Table Mountain. Comment
  CHSC1993  Plectritis macrocera M. Robbie 1930-3-18 Butte Richardson Springs road. 137 Comment
  CHSC38754  Plectritis macrocera Vernon Oswald 1983-3-5 115 Butte Upper Bidwell Park, on the north rim at a level w of Horseshoe Lake. 128 Comment
  CAS-BOT-BC458152  Pleuricospora fimbriolata C. C., Mrs. Bruce 1898-1-1 1217 Butte Colby place Comment
  CHSC41309  Poa S. C. Morey 1983-7-22 545 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
Read comments Mar 7 2011
  CAS-BOT-BC244400  Poa annua Lowell Ahart 1987-5-6 5559 Butte Along the N Fork of the Feather RIver, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  SEINET10593443  Poa annua Lowell Ahart 1973-2-21 Ahart 154 Butte Dry soil, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  SEINET10901937  Poa annua Lowell Ahart 1983-3-28 Ahart 3908 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  CHSC78365  Poa compressa Lowell Ahart 2000-6-29 8540 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET10921189  Poa compressa Lowell Ahart 1988-6-29 Ahart 6090 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone, Butte County, California. Common. Yellow Pine Forest. 622 Comment
  SEINET10655771  Poa epilis Vernon H. Oswald, Lowell Ahart 1990-7-19 Oswald 4371 Butte Slope on the south side of Philbrook Creek, ca. 3 miles east of Philbrook Reservoir, ca. 0.8 mile west of the Plumas County line. T25N R5E SW/S16. Red Fir Forest. 1966 Comment
  CHSC71216  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC236368  Poa secunda subsp. secunda M. S. Taylor; J. D. Jokerst; R. S. Schlising 1980-6-14 2877 Butte Little Bald Rock. Ca. 4 miles E of Lake Madrone 1016 Comment
  CHSC36541  Poa secunda subsp. secunda L. Ahart 1982-6-4 3552 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS110239  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
  CHSC96855  Poa sierrae Lowell Ahart 2007-5-22 13914 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  SEINET10887957  Poa tenerrima Lowell Ahart 2010-5-14 Ahart 16662 Butte T22N, R2E, northeast 1/4 Section 10. Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  UCD92073  Poa tenerrima William Anderson 1965-4-24 s.n. Butte Table Mountain. Comment
  CHSC2376  Pogogyne douglasii R. Carter 1965-5-13 197 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CHSC48493  Pogogyne douglasii Vernon Oswald 1986-4-28 1983 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  UC196319  Pogogyne douglasii A. A. Heller 1914-5-13 11390 Butte Comment
  UC762123  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 mi. SW of Oroville Comment
  HSC32603  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  RSA0022179  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  CHSC100480  Polanisia dodecandra subsp. trachysperma Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15437 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CDA25322  Polanisia dodecandra subsp. trachysperma Sterling O. Mattoon 1971-9-1 Butte Lindo Channel Creek, Cohasset Road, 0.25 mile east of Esplanade. 0 Comment
  CDA40270  Polemonium occidentale T. C. Fuller 1962-7-12 9205 Butte 0.2 mile east of Jonesville. 0 Comment
  CHSC23869  Polycarpon tetraphyllum Lowell Ahart 1976-7-27 1147 Butte North Honcut Creek below the Peter Ahart Ranch. 45 Comment
  SEINET10866374  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 Ahart 5041 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CHSC32101  Polygala cornuta L. Ahart 1974-8-3 583 Butte At Merry Mountain Village. 914 Comment
  NY406770  Polygala cornuta A. A. Heller 1914-7-24 11624 Butte Forest Ranch 731.5 Comment
  CHSC88089  Polygala cornuta var. cornuta R. D. Fischer 2004-4-17 174 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek w. of 10 Mile House Road where rd. and creek are closest. 198 Comment
  CHSC89834  Polygala cornuta var. cornuta L. P. Janeway; B. Castro 2004-6-13 8134 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  CHSC28569  Polygonum aviculare M. S. Taylor; J. D. Jokerst 1979-11-11 2281 Butte Scattered on edge of ricefield. Ca. 6 mi s of Chico, on w side of Goospeed-Watt Rd. 33 Comment
  SEINET10479334  Polygonum aviculare Mary Susan Taylor 1980-10-6 Taylor 3359 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  CAS-BOT-BC109130  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte Near Hog Springs, 6 miles east of Chico. Between Chico and Forest Ranch, 8 miles from Chico. Comment
  CHSC59121  Polygonum bidwelliae L. P. Janeway; B. Castro 1992-5-16 4186 Butte Unnamed canyon on southeast side of Neal Road opposite the entrance to the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. Bottom of slope on west side of dry creek. 68 Comment
  UC1136130  Polygonum bidwelliae J. E. Sowder 1933-6-2 79 Butte about 3 mi n Clear Creek; Chico Quadrangle 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
  CAS-BOT-BC414365  Polygonum californicum Lowell Ahart 1979-6-9 s.n. Butte 2 mi se of Paradise 500 Comment
  CHSC38616  Polygonum californicum Vernon Oswald 1983-6-18 713 Butte Upper Bidwell Park, Chico, ca. 50 ft s of Parking Area C at Horseshoe Lake. 100 Comment
  SEINET10479643  Polygonum davisiae Mary Susan Taylor 1979-7-21 Taylor 2157 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC58945  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  UC203866  Polygonum douglasii subsp. douglasii A. A. Heller 1914-7-23 11603 Butte woods about Chico Meadows 1219 Comment
  CDA2788  Polygonum hydropiper L. Ahart, Vernon Oswald 1999-10-3 8293 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC11917  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville. On shaded gravel bars by Butte Creek. 1500 Comment
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM220087  Polygonum phytolaccifolium H. F. Copeland 1928-8-29 440 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  CAS-BOT-BC419895  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  JEPS88548  Polygonum punctatum Vernon H. Oswald and Lowell Ahart 1996-7-22 8077 Butte U.S. Fish and Wildlife Service parcel between 7-Mile Lane and Sacramento River (edge of farm road crossing a branch of Angel Slough w of Refuge HQ at se corner of Tract 1...); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  SEINET10530407  Polypodium californicum Mary Susan Taylor 1973-1 Taylor 54 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10530412  Polypodium californicum Mary Susan Taylor 1980-4-6 Taylor 2430 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC33346  Polypodium calirhiza Steve Alvarez 1980-3-24 13 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway. 270 Comment
  UC122771  Polypodium calirhiza Mrs. R. M. Austin 1883-4-1 313 Butte bluffs - Little Chico Creek Little Chico Creek Comment
  CDA2355  Polypogon maritimus L. Ahart 1998-7-1 8028 Butte 20 yards south of an east west fence, at a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10530121  Polystichum imbricans Mary Susan Taylor 1980-3-8 Taylor 2368 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10834136  Polystichum imbricans Mary Susan Taylor 1980-10-6 Taylor 3355 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  SEINET259926 Image available Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 Butte 18 mi NE of Oroville. Macabes Cr. Canyon ca. 100 ft. E. of Lumpkin Rd. 396 Comment
  UC1609405  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-8-8 7151 Butte ca. 1 3/4 mi nw Sly Creek Dam (ca. 1 1/2 mi nw of Lewis Flat, e side Pinkard Creek) 1097 Comment
  UC600570  Polystichum imbricans subsp. imbricans E. B. Copeland 1931-6-10 Butte ridge w of North Willow Creek Jonesville 1650 Comment
  CHSC44151  Polystichum lemmonii V. Oswald; L. Ahart 1988-7-29 3655 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CAS-BOT-BC76651  Polystichum munitum Javier Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks. 609 Comment
  SEINET6409502  Polystichum munitum J. Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks 610 Comment
  CHSC6621  Populus M. MacArthur 1968-6-12 303 Butte SE yard of Building U, Chico State College Campus. 60 Comment
  SEINET10501689  Potamogeton crispus Mary Susan Taylor 1982-5-22 Taylor 4496 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
  CHSC65474  Potamogeton filiformis Vernon Oswald 1987-5-25 2927 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. In a pond along a channel. 79 Comment
  CAS-BOT-BC453812  Potamogeton nodosus Herbert L. Mason 1945-7-10 12640 Butte Sanford slough, Butte Sink, southwest corner of Butte County. Comment
  RSA4416  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CHSC44165  Potentilla bruceae V. Oswald; L. Ahart 1988-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  UC1562389  Potentilla drummondii subsp. bruceae Vernon Oswald 1990-7-3 4342 Butte ca 0.75 mi s Humbug Summit (ca 4.75 mi e of Jonesville, headwaters of the East Branch Willow Creek); e branch Willow Creek, s of Humbug Summit, e of Jonesville 1950 Comment
  CHSC32133  Potentilla glandulosa L. Ahart 1977-5-22 1391 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC108956  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17853 Butte Just east of the Deer Pen, near Table 10, Lower Bidwell Park, Chico. 65 Comment
  CHSC26698  Prunus emarginata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1474 Butte On s side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  UC481515  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville 1524 Comment
  CHSC97356  Prunus virginiana var. demissa Paul Maslin 2005-5-5 51 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106100198E 4411262N. 268 Comment
  CHSC30422  Pseudobahia heermannii J. D. Jokerst; L. Ahart, M. Taylor 1980-4-7 553 Butte NE corner of the jct of Swedes Flat Rd and Rocky Honcut Cr, (10 mi SE of Oroville). Comment
  CHSC49599  Pseudobahia heermannii Vernon H. Oswald 1990-1-31 4133 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. Just above high-water level of the lake, just east of the end of the road. 274 Comment
  CHSC26751  Pseudognaphalium luteoalbum M. S. Taylor; M. Hayes 1977-8-16 1448 Butte In flower bed near maintenance buildings, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC39347  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC97728  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  SEINET10530926  Pseudotsuga menziesii Mary Susan Taylor 1980-5-27 Taylor 2656 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
  CHSC25471  Pseudotsuga menziesii var. menziesii Marc Hayes; Warner 1977-9-11 66 Butte Along Hwy 32 above Forest Ranch, exactly 21.4 mi from Hwy 99 overpass in Chico. 701 Comment
  CHSC11830  Psilocarphus oregonus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  CHSC39427  Psilocarphus tenellus var. tenellus Lowell Ahart 1983-8-16 4304 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows. 1600 Comment
  POM278389  Ptelea angustifolia R. M. Austin s.n. Butte Richardson's Springs. Sierra Nevada Mtn Range. Feather River. Comment
  CAS-BOT-BC72551  Pteridium aquilinum A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch Comment
  CHSC39367  Pteridium aquilinum var. pubescens L. Ahart; P. Ahart 1983-9-21 4463 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  UC1609073  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 Reservoir 1188 Comment
  CHSC82436  Pterostegia drymarioides Lowell Ahart 2002-5-6 9607 Butte Bulldozed road, on top of the face of the exposed sand mine, east of the very beginning of Schirmer Ravine, about 200 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 243 Comment
  SEINET10959744  Puccinellia simplex Lowell Ahart 1982-4-29 Ahart 3396 Butte Normal size. On white alkali bare soil near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common only in the bare alkali areas; uncommon in this area. 35 Comment
  SEINET10452826  Punica granatum Mary Susan Taylor Taylor 779 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC48495  Pycnanthemum californicum Vernon Oswald 1986-7-7 2184 Butte Millsap Bar Rd. 3.2 mi e of Bald Rd. near Brush Creek. 914 Comment
  JEPS98312  Pyrola aphylla Lowell Ahart 2000-7-11 8573 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls 1219 Comment
  CHSC110840  Pyrola aphylla David Isle; Ana Mendez 1989-7-3 f 2009 Butte Mendocino Natl. Forest-North Coast Ranges Briscoe Creek Watershed. N sslope of Noel Slprings Ridge, 0.9 mi NW (up) Clover Creek Rd 20N41 from 20N71/20N41. N of cull deck. 1292 Comment
  UC600605  Pyrola asarifolia E. B. Copeland Jul 1929 Butte Jonesville 487 Comment
  SD3521  Pyrola asarifolia subsp. asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville, shady places near streams 1500 Comment
  UC177571  Pyrola picta H. M. Hall 1914-7-23 9778 Butte near Jonesville 1737 Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  CHSC97778  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  UCR231084  Quercus chrysolepis Anna M. Hurlbutt 2009-8-12 016 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  CAS-BOT-BC79603  Quercus durata Lowell Ahart 1985-6-30 5093 Butte S of road to the Forbestwon Res. 200 yards S of the road to the Forbestown Res., 100 yards S of the Forbestown Ditch, 899 Comment
  SEINET10477879  Quercus durata Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3479 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  UC1135634  Quercus garryana var. breweri C. G. Albertus 1933-7-1 39 Butte sw slope Promontory Pk.; Chico Quad. 1005 Comment
  CHSC20501  Quercus kelloggii M. S. Taylor 1975-6-30 826 Butte Abundant along Cohasset Hwy, ca. 1 mi s of Cohasset, ca. 17 mi ne of Chico. 853 Comment
  CHSC77341  Quercus lobata L. P. Janeway 2000-3-29 6648 Butte Sacramento Valley. At edge of River Road 0.5 mi south of Hwy 32; near Pine Creek. Along fenceline between road and orchard. 43 Comment
  CHSC29048  Ranunculus bonariensis var. trisepalus R. A. Schlising 1980-4-14 3565 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; in ditch at s end of area. Comment
  SEINET10535963  Ranunculus californicus Mary Susan Taylor 1973-1 Taylor 47 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET7083219  Ranunculus canus L. Ahart 2003-5-28 10228 Butte Edges of a large vernal pool 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence west of Cherokee Road, North Table Mountain. About 7 miles north of Oroville. 39? deg. 35' 3.5" North Latitude; 121? deg. 35' 7.3" West Longitude. EX MWI. Comment
  CHSC51111  Ranunculus canus var. canus Ginger S. Gough 1989-4-8 22 Butte In gulley, ca. 140 m ne of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  UC827668  Ranunculus canus var. canus A. A. Heller 1914-5-13 11393 Butte in a field near Nelson (type was collected in this region by Hartweg) Comment
  CHSC52821  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 37 Butte N part of county at s end of Crane Valley; in meadow. 1584 Comment
  CHSC10560  Ranunculus hebecarpus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC101166  Ranunculus muricatus Lowell Ahart 2009-5-15 15698 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC31383  Ranunculus muricatus J. D. Jokerst 1979-4-20 1205 Butte Along the banks of a creek. Top of North Table Mt., ca. 200 met. N of Cherokee Rd. at the E edge of the mountain. 403 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  CDA14071  Ranunculus occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-1 13718 Butte Sierra Nevada; NE side of upper end of Paradise Lake above Magalia. Comment
  CDA15363  Ranunculus occidentalis G. F. Hrusa 1997-5-29 13802 Butte Sierra Nevada; Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  UC478516  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  SEINET10535980  Ranunculus occidentalis var. eisenii Mary Susan Taylor 1978-7-21 Taylor 1829 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  SEINET194909  Ranunculus occidentalis var. eisenii A. A. Heller 1919-5-18 13181 Butte Mosquito Creek between Appleton and Coutolenc 610 Comment
  CHSC46848  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 249 Butte S part of county, ca. 1.5 mi s of Hurleton. Comment
  RSA268507  Ranunculus occidentalis var. ultramontanus J. H. Morrison 1929-06 s.n. Butte Oroville - Quincy, Sierra Nevada. 1829 Comment
  SEINET10535983  Ranunculus occidentalis var. ultramontanus Mary Susan Taylor 1978-7-18 Taylor 1723 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
  CHSC53704  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1981-8-4 71 Butte Ca. 1 mi e of Butte Creek House in n part of county. In meadow. 1853 Comment
  JEPS95761  Ranunculus pusillus Lowell Ahart 1995-5-26 7573 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) Comment
  RSA256670  Raphanus sativus J. L. Hobson 1974-4-20 19 Butte 300 yrds along Pentz Road from the intersection of Clark and Pentz Roads. Comment
  CAS-BOT-BC59880  Rhamnus ilicifolia Paul Leskinen 1972-9-9 1420 Butte Highway 155 e. of Glenville. 914 Comment
  UC870831  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi below Centerville (in the Sierra foothills); Sierra Comment
  POM219424  Rhamnus rubra E. B. Copeland 1931-7-28 657 Butte Jonesville. 1650 Comment
  CHSC93882  Rhamnus tomentella subsp. tomentella L. P. Janeway 2006-5-28 8640 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  CHSC6018  Rhaphiolepis indica M. MacArthur 1968-6-19 273 Butte SW entrance to EP bld., Chico State College. 60 Comment
  CHSC37628  Rhus aromatica T. B. Devine 1979-8-12 593 Butte Forest Ranch Road, ca. 3 mi N of Forest Ranch, ca. 1/2 mi Nw of Hwy 32. Comment
  CHSC51992  Rhus aromatica L. P. Janeway 1988-4-10 2617 Butte Butte Cyn; grassy slope below Centerville Rd (Humbug Rd) 1.0 mi NE of Honey Run Rd. 115 Comment
  SD131005  Rhynchospora capitellata Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  SEINET3913006  Rhynchospora capitellata Vernon Oswald, Lowell Ahart 1990-7-31 4424 Butte Yellow Pine Forest: Flea Valley bordering Concow Road, about 4 miles north of Concow.; 0 1128 Comment
  POM219022  Ribes cereum Copeland 1931-6-11 645 Butte Kirby s Meadow, Jonesville. 1800 Comment
  SBBG28486  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow 1800 Comment
  LA205437  Ribes inerme var. inerme E. B. Copeland; 1931-5-9 sn Butte Jonesville 1500.0 Comment
  UC600616  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  RSA0024711  Ribes roezlii Carl B. Wolf 1941-7-23 11055 Butte Northern Sierra Nevada. On Chico - Lake Almanor Road (Calif. Highway 32), approx. 5 miles North of Forest Ranch. 915 Comment
  RSA0024577  Ribes roezlii var. cruentum A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico. Comment
  CAS-BOT-BC198955  Ribes roezlii var. roezlii Carl B. Wolf 1941-7-23 11055 Butte Northern Sierra Nevada, on Chico-Lake Almanor Rd., Calif. Highway #32, approx. 5 mi. N Forest Ranch 914 Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  JEPS108155  Romulea rosea var. australis Rod Lacey 2005-3-28 Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. Ruderal Valley Grassland 54 Comment
  CHSC65775  Rorippa curvisiliqua var. occidentalis Vernon H. Oswald 1996-4-10 7352 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 10.1 and Tract 10.2 (seasonal marshes), Sanctuary 1. 32 Comment
  CHSC36688  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-16 342 Butte Near small stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  SEINET10483877  Rosa Mary Susan Taylor 1979-10-12 Taylor 2240 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC65429  Rosa bridgesii Vernon Oswald 1984-5-28 1211 Butte Cohasset Rd., 1.3 mi n of the end of the pavement. 1005 Comment
  JEPS115697  Rosa californica Lowell Ahart 2009-6-19 15942 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CHSC93959  Rosa pisocarpa R. D. Fischer 2004-6-20 756 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
  CHSC29764  Rosa pisocarpa subsp. ahartii M. S. Taylor 1980-5-24 2747 Butte Peter Ahart Ranch, along Rocky Honcut Creek, Honcut. 50 Comment
  CHSC90308  Rosa rubiginosa L. P. Janeway 1994-9-29 4758 Butte Northern High Sierra Nevada. Northeast side of Quartz Hill; overlooking Quartz Creek and Fall River Campground. 1310 Comment
  JEPS95941  Rotala ramosior Lowell Ahart 1999-8-13 8170 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
  RSA0112567  Rotala ramosior Lowell A. Ahart 2013-9-20 19059 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 31 Comment
  SEINET13711421  Rotala ramosior Lowell William Ahart, Lowell William Ahart 1999-1 8170 Butte 12 Air Mi. SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CDA42869  Rubus armeniacus L. Ahart 2012-5-14 18055 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC48870  Rubus glaucifolius Vernon Oswald 1985-6-10 1827 Butte 0.2 mi w of Hwy 32 on a spur road located 0.1 mi s of Forest Ranch Forest Fire Station. 1042 Comment
  CHSC28912  Rubus laciniatus M. S. Taylor 1980-2-17 2362 Butte Along a dirt road by creek, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC46044  Rubus parviflorus L. P. Janeway 1987-5-28 2117 Butte Along rd from Coyote Gap 1.3 mi towards Big Bar Mtn. 1249 Comment
  CHSC44231  Rubus pensilvanicus Vernon Oswald 1988-6-30 3541 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. 1146 Comment
  SEINET10483603  Rubus procerus Mary Susan Taylor 1975-5-24 Taylor 771 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CHSC38148  Rubus ursinus J. D. Jokerst 1983-5-12 1760 Butte Table Mountain. Slope of the first creek canyon north of Cherokee Rd. where it intersects the east edge of the mesa. Comment
  CHSC4724  Rumex acetosella R. Carter 1966-4-21 358 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing along roadside on E side Old Cherokee Rd., 6.5 mi. from Chico Rd. 274 Comment
  JEPS119634  Rumex conglomeratus Lowell Ahart 2012-6-14 18184 Butte On the north side of Big Chico Creek, near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC116717  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-5-24 20859 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) notheast of Honcut. 44 Comment
  JEPS119591  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CHSC65018  Salix jepsonii V. Oswald; L. Ahart 1988-10-6 3708 Butte Last Chance Creek where it crosses the road between Inskip and Jones Meadow. 1560 Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  UC474239  Salix lasiolepis H. F. Copeland 1923-3-16 Butte Butte Creek Canyon; near mouth Comment
  SBBG29070  Salix lemmonii E. B. Copeland 1931-8-1 Butte Jonesville 1700 Comment
  POM219072  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville. Near the head of N Willow Creek. 1550 Comment
  CHSC60851  Salix lucida subsp. lasiandra Vernon H. Oswald; Lowell Ahart 1993-6-22 5561 Butte In Long Ravine W of Stirling City, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  LA208870  Salix melanopsis E. B. Copeland; 1931-6-10 sn Butte by Butte Creek; Jonesville 1500.0 Comment
  JEPS116659  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Chico Chico (north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road); Sacramento Valley 63 Comment
  CHSC110041  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. 90 Comment
  CHSC20058  Salvia sonomensis M. S. Taylor 1975-4-25 493 Butte Along dirt road, ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC52198  Salvia sonomensis L. P. Janeway 1988-5-19 2670 Butte Along Cohasset Rd near the Anderson Mill site; near the county line. 1133 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
  UCR190831  Salvia sonomensis 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
  CAS-BOT-BC238613  Sambucus nigra subsp. caerulea Lowell Ahart 1980-5-12 2254 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS98675  Sanguisorba annua Lowell Ahart 2000-6-29 8544 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET12121437  Sanicula bipinnata R. S. Mitzel 1982-1 3 Butte ca 50 yds S of Horseshoe Lake in Upper Bidwell Park, 3 mi NE of Chico 61 Comment
  SEINET3450850  Sanicula tuberosa Unknown 2003-4-15 10101 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 1.25 miles northwest of the iron gate and fence, northwest of Cherokee Road, steep slopes of Beatson Hollow 280 Comment
Read comments May 5 2015
  CAS-BOT-BC436863  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC4657  Saxifraga californica R. Carter 1966-3-3 292 Butte Found along N side Oregon Gulch Rd. ca. 3 mi. NE of southern intersection with Old Cherokee Rd., ca. 4 mi. NE of Oroville; road bank. 213 Comment
  SEINET12215661  Saxifraga californica Unknown 1977-1 77 Butte in Beaston Hollow, ca 2.4 km W of Cherokee Rd, 4.8 km E of Hwy 70, 7.6 km NE of Oroville 5 Comment
  UC591531  Saxifraga oregana H. F. Copeland 1935-6-25 Butte Jonesville 1500 Comment
  CHSC66168  Schoenoplectus acutus var. occidentalis Vernon H. Oswald 1996-5-27 7656 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a drainage on the bed of seasonal marsh at the SW corner of Tract 2, Sanc-tuary II. 33 Comment
  UCD49963  Schoenoplectus mucronatus Carl M. Wick 1983-6-1 s.n. Butte CA. Butte Co. 2 1/2 mis. n. of the Richvale Hwy, on Erickson Rd. Comment
  CAS-BOT-BC111832  Schoenoplectus tabernaemontani John Thomas Howell 1961-9-22 36724 Butte Bank of Feather River, Oroville. 53 Comment
  CHSC45123  Schoenoplectus tabernaemontani Vernon Oswald 1988-8-15 3689 Butte South side of a small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  CHSC56800  Scirpus congdonii L. P. Janeway 1986-9-1 1831 Butte Near wet meadow and willows at east end of Philbrook Reservoir. 1691 Comment
  SD449  Scirpus congdonii E. B. Copeland 1929-2-19 Butte In sunny bog surrounded by Pinus murrayana, Jonesville. Comment
  UC1542874  Scirpus diffusus E. B. Copeland June 1931 Butte Jonesville Comment
  CHSC57210  Scirpus microcarpus L. P. Janeway; R. A. Schlising 1988-7-16 3002 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  CHSC46442  Scribneria bolanderi Lowell Ahart 1989-5-23 6263 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  SEINET10968193  Scribneria bolanderi Mary Susan Taylor 1980-5-15 Taylor 2633 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC2485  Scrophularia californica subsp. floribunda W. Fitzwater 1958-4-19 Butte Chico canyon, Chico area. 350 Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 Comment
  CHSC27917  Scutellaria californica M. S. Taylor 1978-7-19 1729 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC44140  Scutellaria siphocampyloides Vernon Oswald 1988-8-3 3660 Butte North side of Humboldt Rd. ca. 0.1 mi w of its intersection with Scout Rd. in Butte Meadows. 1325 Comment
  CHSC9541  Scutellaria siphocampyloides D. Joley 1968-7-8 88 Butte Found growing at Butte Meadows on hwy. 32. Comment
  CHSC57224  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Rd. on the north side of Thermalito Diversion Pool about one-quarter mile east of the old bridge site. 76 Comment
  CAS-BOT-BC59130  Sedum spathulifolium Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16313 Butte SE slope near PG&E Reservoir, Feather River Canyon. Comment
  SBBG17106  Sedum spathulifolium M. Vincent 1962-4-18 211 Butte near Feather River at Hells Town Comment
  CAS-BOT-BC62116  Selaginella hansenii Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC62117  Selaginella hansenii Lowell Ahart 1961-3-3 s.n. Butte Salmon Hole, Chico 91 Comment
  CAS-BOT-BC62119  Selaginella hansenii John Thomas Howell 1962-6-16 37617 Butte Nelson Bar 213 Comment
  HSC78630  Selaginella hansenii L. P. Janeway 1984-9-29 1177 Butte At top of Feather Falls on Fall River (a tributary to Middle Fork of Feather River), 'Feather Falls Scenic Area 579 Comment
  SEINET10470982  Selaginella hansenii Collins, 1978-4-21 Collins 14 Butte 6 miles n of Oroville, 1 mile w of Cherokee Rd. 1000 feet. 305 Comment
  CHSC65799  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River. 441 Comment
  SEINET10530446  Selaginella wallacei Mary Susan Taylor 1979-9-28 Taylor 2193 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET10839468  Selaginella wallacei Lawrence P. Janeway 1984-10-7 Janeway 1178 Butte Brush Creek quad T21N R6E SE 1/4 of sec. 30, 3200 feet. 975 Comment
  CHSC47077  Senecio aronicoides R. A. Schlising; S. Morey, D. Ikeda 1988-5-8 4538 Butte S of Cohasset, along Cohasset Road. 426 Comment
  CHSC86439  Senecio eurycephalus var. lewisrosei Jenny Marr 1994-6-13 81 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on serpentine outcrop belonging to LNF. Site approx. 0.3 miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CHSC4652  Senecio integerrimus var. major R. Carter 1966-4-26 364 Butte Found ca. 10 mi. NE of Oroville along E side of USFS road 21N40 to Bloomer Mt., in woods 15 yds. off road 2 mi. W from intersection with Oroville-Quincy Rd. 762 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
  CAS-BOT-BC341182  Senecio lugens E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  SEINET10938098  Senecio vulgaris Mary Susan Taylor 1981-5-1 Taylor 3580 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
  UCD135859  Senecio vulgaris M. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Rd, on Clark Road. Comment
  UC2026877  Sequoiadendron giganteum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18009 Butte Southeast of the horse path, on the south side of the paved park road, south of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
Read comments Jul 25 2018
  CHSC46981  Setaria parviflora Vernon H. Oswald 1989-9-19 4012 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in s Chico. Along Comanche Creek. 68 Comment
  RSA0060809  Setaria pumila Lowell A. Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  UCD92745  Setaria pumila E. Wilson 1935-9-1 s.n. Butte Biggs Rice Station. Comment
  CHSC49573  Setaria sphacelata Vernon Oswald 1988-6-8 3357 Butte Hamilton Rd. bordering the south side of Thermalito Afterbay, ca. 0.2 mi e of Hwy 99. In a ditch along the road. 32 Comment
  CHSC101264  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  SD111906  Sherardia arvensis Barbara Ertter, Jeff Strachan 1980-5-5 3261 Butte Peter Ahart Ranch ca 1I(c) mi northeast of Honcut between Oroville and Marysville, pasture north of house, wet clay bank of ditch 29 Comment
  SEINET10500674  Sherardia arvensis Mary Susan Taylor 1980-5-15 Taylor 2628 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC75384  Sidalcea diploscypha Jennifer Slater 1997-4-27 36 Butte Upland the Wurlitzer addition of the Vina Plains Preserve, west of the Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC1755048  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  UC1124956  Sidalcea glaucescens P. L. Johannsen 1936-7-21 958 Butte 1 1/2 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC11102  Sidalcea hartwegii Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  CHSC42236  Sidalcea hartwegii Steve Holloway 1986-4-18 25 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  RSA21305  Sidalcea hartwegii Carl B. Wolf 1937-5-13 8650 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SBBG71494  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Little Chico Crk Comment
  UC725939  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte near the covered bridge on Butte Creek e Chico; near the covered bridge on Butte Creek e of Chico Comment
  UCD116736  Sidalcea hartwegii Bess Fuller 1962-5-8 s.n. Butte at the spring 0.5 mile west of 5330 Harrison Road, Paradise. Comment
  CHSC88953  Sidalcea hirsuta Christine Hantelman 2000-4-27 81 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  JEPS115622  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  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
  JEPS115810  Silene californica Lowell Ahart 2009-4-26 15624 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  CHSC118500  Silene laciniata subsp. californica L. P. Janeway 2016-5-9 11955 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  SD1632  Silene lemmonii E. B. Copeland 1929-7-15 Butte Jonesville. Comment
  CAS-BOT-BC181357  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  UC600620  Silene occidentalis subsp. longistipitata H. F. Copeland 1924-8-11 880 Butte Jonesville Comment
  SEINET10537666  Silene occidentalis subsp. occidentalis Mary Susan Taylor 1982-8-16 Taylor 5000 Butte T24N R4E se/sw sec 1. Pulga NW quad. Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600 ft. 1707 Comment
  CHSC115421  Silybum marianum Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail near golf course. 89 Comment
  JEPS115623  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC44521  Sisyrinchium bellum Lowell Ahart 1988-4-30 5971 Butte Near a small stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  RSA26487  Smilax californica C. Dudley 1940-06 s.n. Butte Near Magolia. Comment
  SEINET10931472  Solanum americanum Mary Susan Taylor 1979-9-28 Taylor 2195 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC101306  Solanum parishii Lowell Ahart 2009-4-22 15595 Butte East side of Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SEINET7274373 Image available Solanum parishii S. Jones 29 Butte ca. 0.25 mi E of jct of Stilson Canyn Rd. and Bruce Rd.; Butte County Comment
  SEINET10829502  Solanum umbelliferum Lowell Ahart 1987-5-9 Ahart 5599 Butte Along Pulga Road, about 0.5 mile SW of Bardees Bar along the North Fork of the Feather River about 3 miles SW of Pulga. 366 Comment
  SEINET10475256  Solidago canadensis subsp. elongata Mary Susan Taylor 1982-8-16 Taylor 4988 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  SEINET10475257  Solidago canadensis subsp. elongata Mary Susan Taylor 1980-7-6 Taylor 3072 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
  CHSC30892  Solidago elongata M. S. Taylor 1980-9-12 3330 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station. 975 Comment
  CHSC47667  Soliva sessilis Lowell Ahart 1979-5-11 1871 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC103987  Sonchus oleraceus Lowell Ahart 2010-5-14 16671 Butte On the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 260 Comment
  CHSC111368  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. 79 Comment
  JEPS117702  Sonchus oleraceus Lowell Ahart 2010-5-14 16671 Butte On the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 260 Comment
  JEPS118037  Sonchus oleraceus Lowell Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  POM181473  Sonchus oleraceus H. F. Copeland 863 Butte Nelson. Comment
  CAS-BOT-BC158895  Sorbus scopulina Lowell Ahart 1983-8-16 792 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows 1450 Comment
  CAS-BOT-BC236540  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte On S side of Crauch Road, ca. 300 ft. W of its jct. with Lone Pine Ave., ca. 4 mi. S of Chico 30 Comment
  CHSC110981  Sorghum halepense Lowell Ahart 2012-7-5 18281 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved park road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  SEINET10507640  Sorghum halepense Mary Susan Taylor 1979-9-28 Taylor 2203 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC389944  Spergula arvensis Lowell Ahart 1985-5-31 5031 Butte 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
  CHSC45561  Spergula arvensis subsp. arvensis Lowell Ahart 1977-5-22 1394 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS117229  Spergularia bocconi Lowell Ahart 2010-5-7 16610 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
  CHSC94600  Spergularia rubra Lowell Ahart 2006-9-11 13280 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC390598  Spergularia rubra Lowell Ahart 1984-6-10 4707 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CAS-BOT-BC390601  Spergularia rubra Lowell Ahart 1983-8-16 4309 Butte Near Bull Hill Road, about 3 1/2 miles south of Butte Meadows 1600 Comment
  CHSC28903  Sphenosciadium capitellatum M. S. Taylor 1978-7-18 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi W of Cherry Hill Campground. 1524 Comment
  SD3477  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CHSC109084  Spiraea Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 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
  CHSC11996  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville. At 'the Summit. 2100 Comment
  CAS-BOT-BC149642  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  CHSC48919  Spiraea douglasii Vernon Oswald 1987-7-16 3125 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) ne of Inskip. Along the stream. 1341 Comment
  CHSC69052  Spiraea douglasii Lowell Ahart 1997-8-1 7785 Butte Near some streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  POM196150  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville. 1500 Comment
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  CHSC64056  Spiranthes romanzoffiana S. C. Morey 1983-9-17 751 Butte On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
Read comments Sep 6 2011
  JEPS110395  Spiranthes stellata Lowell Ahart 2006-8-15 13183 Butte Near the center of a large open meadow with bogs, about 70 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
  CHSC46322  Sporobolus cryptandrus Vernon Oswald 1989-6-8 3802 Butte Hwy 70, ca. 0.5 mi n of Truex Rd, n of the Hwy 70 bridge over the North Fork of the Feather River. On the verge of this section of highway. 408 Comment
  CHSC101830  Stachys ajugoides var. rigida Lowell Ahart 2009-5-23 15760 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC65424  Stachys ajugoides var. rigida Vernon Oswald 1983-8-17 980 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the jct. of Colby, Willow, and Butte Creeks. Growing on the edge of Colby Creek. 1493 Comment
  CHSC42788  Stachys pycnantha L. P. Janeway; Patty Costello 1987-9-5 2575 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC60609  Stachys pycnantha L. P. Janeway 1992-6-13 4235 Butte Along Piute Drive, ca 1/4 mi east of Dark Canyon Road and ca 1/2 mi south of Parkhill and Big Bend Road. 594 Comment
  POM181715  Stachys rigida subsp. quercetorum H. F. Copeland 1923-4-6 213 Butte Nelson. Comment
  CHSC52077  Stachys stricta B. Castro 1987-7-24 187 Butte Between curve in Table Mtn Blvd and the W. Pacific RR line. 103 Comment
  UC1594589  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  UC1609008  Stellaria crispa Lowell Ahart 1993-9-13 7231 Butte about 1 mi se Butte Meadows (banks of Bolt Creek); Bolt Creek 1325 Comment
  POM161690  Stellaria longipes E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  SEINET10537516  Stellaria longipes Mary Susan Taylor 1978-6-24 Taylor 1655 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  UC478520  Stellaria longipes var. longipes E. B. Copeland 1931-6 638 Butte Joneville Jonesville 1500 Comment
  CHSC113349  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC231  Stellaria media M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC90631  Stellaria media Lowell Ahart 2005-4-2 11689 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC60963  Stephanomeria lactucina Lowell Ahart 1993-6-26 7027 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC61633  Stephanomeria lactucina Lowell Ahart 1993-9-8 7173 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  UC392186  Stephanomeria lactucina E. B. Copeland July 1929 Butte Jonesville Comment
  POM193087  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  CHSC61299  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
  SEINET10474965  Stephanomeria paniculata Lowell Ahart 1991-8-25 Ahart 6704 Butte On the north side of the dirt road, Forest Road 23N60 (Jordan Creek-Marble Creek Road) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. Yellow Pine Forest. T22N R6E NW/S24. 1097 Comment
  HSC73016  Stipa stillmanii M. S. Taylor, L. Ahart 1981-8-15 4179 Butte Both sides of the Skyway, 1.8mi. S of Inskip 1250 Comment
  OBI22289  Stipa stillmanii Robert F. Hoover 1965-10-16 9722 Butte Forest Ranch Comment
  CHSC4162  Streptanthus diversifolius R. Carter 1966-4-21 349 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. 274 Comment
  CHSC51106  Streptanthus diversifolius Ginger S. Gough 1989-4-8 19 Butte Ca. 91 m e of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  HSC35736  Streptanthus diversifolius Dave Knorr 1974-4-20 136 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  CHSC102019  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte Northern High Sierra Nevada. 1.6 air mi north of Jarbo Gap; 0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest clearing under powerlilnes, about 1/3 of the way down the steepest part of the slope. 853 Comment
  CHSC78133  Streptanthus polygaloides Lowell Ahart 2000-5-31 8419 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC86434  Streptanthus polygaloides Jenny Marr 1994-6-13 89 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC87517  Streptanthus tortuosus W. P. Vestal; A. G. Vestal 1947-4-30 s.n. Butte Table Mountain, northeast of Oroville. Comment
  UC956623  Streptanthus tortuosus Freed W. Hoffman 1949-5-14 2779 Butte crest of mt Table Mountain (on road to Oroville) 335 Comment
  SEINET10448530  Streptanthus tortuosus var. pallidus Mary Susan Taylor 1973-1 Taylor 13 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  CHSC93859  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-6-9 12647 Butte Cutbank, on the west 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
  RSA304177  Styrax redivivus James R. Shevock 1972-5-19 1783 Butte S of Storie. Feather River Cyn. 610 Comment
  UC961210  Swertia albicaulis var. nitida Marion Ownbey and Gerald B. Ownbey 1946-6-25 2944 Butte Comment
  CHSC48022  Symphoricarpos albus var. laevigatus Vernon Oswald 1987-5-7 2380 Butte Butte Creek Reserve on the N side of Butte Creek E of the Skyway. 74 Comment
  SEINET10784830  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5-16 Ahart 13889 Butte T22N, R4E, southwest 1/4 Section 21. On dry dark soil, on the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. Foothill Woodland. Comment
  UC426974  Symphoricarpos mollis var. acutus E. B. Copeland 1930-7-7 479 Butte Jonesville 1600 Comment
  CAS-BOT-BC99224  Symphyotrichum ascendens A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  JEPS108935  Symphyotrichum bracteolatum Lowell Ahart 2006-9-9 13246 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  CHSC41881  Symphyotrichum chilense Lowell Ahart 1986-11-9 5433 Butte Along the east edge of the Oroville Quincy Highway, near the Berry Creek School, about 16 miles northeast of Oroville. 518 Comment
  CAS-BOT-BC98088  Symphyotrichum spathulatum A. A. Heller 1914-8-7 11651 Butte Butte Meadows 1219 Comment
  JEPS115044  Symphyotrichum spathulatum Lowell Ahart 2007-10-30 14507 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-BC98328  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Gray Lodge, SW of Gridley - sides of a deep ditch, about 100 meters north of the Check-in-Station, Gray Lodge, 35 Comment
  JEPS116044  Taeniatherum caput-medusae Lowell Ahart 2009-4-17 15551 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC45776  Tanacetum parthenium Vernon Oswald 1985-8-1 1917 Butte P-Line between Stirling City and Five Corners, 0.4 mi s of the bridge over W. Branch Feather R. Near a stream. 804 Comment
  CHSC97013  Tanacetum parthenium L. P. Janeway 2007-6-19 9066 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 2.1 road km south of Ponderosa Dam; 1.2 air km south-southwest of Ponderosa Dam and South Fork Feather River. 396 Comment
  CHSC32736  Tauschia kelloggii M. S. Taylor 1981-4-8 3517 Butte Between Ponderosa Way (Rim Rd) and Concow Rd, ca. 1/10 mi s of their jct; ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 2 mi n of Lake Concow. 975 Comment
  CHSC25350  Tellima grandiflora Mark P. Hayes 1977-4-22 14 Butte Ca. .5 km sw of Heinz Crk., along small creek, ca. 200 m from its confluence and North