Search Results — 2000 specimen records retrieved (1622 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC20540  Abelia schumannii Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CHSC1769  Abronia latifolia R. Morford 1931-4-30 Butte Salmon Hole, Chico Creek. 152 Comment
  UC1171590  Acer circinatum R. Bacigalupi 1934-9-2 2326 Butte along Chico-Butte Meadows Road 10 mi sw Butte Meadows (Canyon of W Fork of Campbell Creek); Lassen National Forest, Chico Quad., W Fork Campbell Cr Comment
  SEINET10453992  Acer macrophyllum Mary Susan Taylor 1975-9-19 Taylor 915 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  SEINET7893958  Acer macrophyllum M. J. Williams 1967-4-15 s.n. Butte Feather River Highway. 671 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
  CHSC27267  Acer negundo var. californicum P. Moyer 1972-4-9 160 Butte CSUC campus. S bank Chico Ck., w of Warner St. Bridge 60 Comment
  CHSC99656  Acer negundo var. californicum H. Koeth 2007-4-12 Butte Chico State Campus, south of Holt Hall in riparian zone. 57 Comment
  CHSC43582  Acer saccharinum Vernon Oswald 1987-5-4 2370 Butte Bidwell River State Park ca. 30 ft. n of Big Chico Creek. 36 Comment
  CHSC104816  Achillea millefolium Lowell Ahart 2010-6-12 16792 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico. 349 Comment
  SEINET10937968  Achillea millefolium Mary Susan Taylor 1978-5-6 Taylor 1587 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10904839  Achillea millefolium var. lanulosa Lowell Ahart 1985-5-15 Ahart 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  SEINET10663560  Achnatherum occidentale Lowell Ahart, Vernon H. Oswald 1999-7-26 Ahart 8123 Butte T18N, R12E, southwest 1/4 Section 34. On a ridge about 75 yards west of Grouse Ridge Road (Road 14) and about 1/2 mile southwest of the Lookout, about 5.5 miles northeast of Bowman Lake Road (Road 18), about 4.5 miels (air) south of Bowman Lake. 2134 Comment
  CAS-BOT-BC216466  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  CHSC31213  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC49587  Achnatherum stillmanii Vernon Oswald 1984-6-19 1304 Butte Hwy 32, 9.3 mi n of Forest Ranch. 1036 Comment
  CHSC95045  Achnatherum stillmanii L. P. Janeway 2006-7-9 8807 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  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
  CHSC4132  Achyrachaena mollis R. Carter 1966-4-21 355 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 15 yds. Off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. 274 Comment
  UCD150367  Achyrachaena mollis Harry A. George 1967-4-24 s.n. Butte Shippe Rd. Comment
  SEINET11842159  Achyrachaena mollis E. J. Baker 1984-1 20 Butte E. side of Hwy 99, 1 yd S of intersection with Broyles Rd, ca 12 mi N of Chico 58 Comment
  CHSC40913  Acmispon argophyllus var. fremontii Lowell Ahart 1977-4-28 1324 Butte About 1 mile north-east of the Ponderosa Dam, north of Forbestown. 457 Comment
  CHSC28156  Acmispon brachycarpus R. J. Goedl 1979-4-14 10 Butte Ca. 6 mi n of Oroville 0.5 mi w of Cherokee Mountain Road. 365 Comment
  CHSC78146  Acmispon brachycarpus Lowell Ahart 2000-5-31 8424 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
  CHSC86139  Acmispon grandiflorus var. macranthus John Dittes 2002-6-29 627 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
  CHSC33584  Acmispon parviflorus M. S. Taylor 1981-5-5 3597 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. Comment
  JEPS119582  Acmispon strigosus Lowell Ahart 2012-4-17 17879 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
  CHSC33695  Acmispon wrangelianus L. Ahart 1981-4-9 2750 Butte On bare area near North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC11816  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CHSC24871  Adiantum aleuticum T. L. Reynolds 1976-4-23 59 Butte Small population, ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC44611  Adiantum aleuticum Vernon Oswald 1985-7-15 1900 Butte Near Cresta Tunnel below the falls on Bear Ranch Creek via the dirt road opposite Cresta Rest Area on Hwy 70. 463 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
  CHSC23472  Adiantum jordanii T. D. Brumley 1974-5-2 4 Butte On s side of Chico creek ca. 400 yds s of Municipal Golf Course building, Chico. 152 Comment
  CHSC28879  Adiantum jordanii M. S. Taylor 1980-3-1 2340 Butte Looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC47  Adiantum jordanii V. Holt 1934-4-1 Butte Fern Banks along Chico Creek. 60 Comment
  CAS-BOT-BC202591  Aesculus californica Lowell Ahart 1983-6-26 4112 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC4455  Aesculus californica C. Glascock 1965-3-17 290 Butte Ca. 50 ft. downstream from E end of covered bridge on the Honey Run Rd., near Chico. Comment
  CHSC109559  Agoseris grandiflora var. leptophylla L. P. Janeway 2012-8-1 10916 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  CHSC25052  Agoseris heterophylla var. cryptopleura G. N. Steger 1972-4-15 Butte Along top of N Table Mt., 4 mi S of Cherokee on Cherokee rd and 100-200 yds W of Cherokee rd. 396 Comment
Read comments
Jan 19 2011
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  CHSC115189  Agoseris retrorsa Lowell Ahart 2015-4-27 20090 Butte On the northside of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) of Oroville. 304 Comment
  CHSC78218  Agrostis elliottiana Lowell Ahart 2000-5-16 8358 Butte On the margins of the Thermalito Afterbay, on the south and north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS98367  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte 13 air miles NE of Oroville (N side of Bean Creek Road, about 1/4 mi SE of Little Bald Rock, 1 1/4 mi NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CAS-BOT-BC127337  Agrostis exarata Lowell Ahart 1977-7-8 1522 Butte Peter Ahart Ranch, Honcut. On the edge of North Honcut Creek. 50 Comment
  CAS-BOT-BC127371  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek. 50 Comment
  CDA13312  Agrostis exarata G. F. Hrusa, T. D. Wilfred 1996-7-9 13158 Butte Sierra Nevada; Shaded banks on E side of bridge over Marble Creek along USFS N60. Occasional, perennial. 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
  JEPS113180  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  CHSC43171  Agrostis idahoensis Robert Banchero 1981-7-18 601 Butte Ca 0.3 mi e of jct Jonesville Rd and Scotts-John Rd. 1749 Comment
  JEPS108887  Agrostis microphylla Lowell Ahart 2006-4-28 12549 Butte Open flat pasture, south of the old dirt road, about 1/4 mile southeast of the reservoir, about 2 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 316 Comment
  UC600600  Agrostis scabra E. B. Copeland Jul 1929 Butte woods across Jones creek Jonesville 1550 Comment
  CHSC31731  Agrostis stolonifera L. Ahart 1977-7-19 1480 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC6029  Ailanthus altissima M. MacArthur 1968-6-18 227 Butte Ca. 10 ft. from Big Chico creek (SE) opposite LS bld., Chico State College campus. 60 Comment
  SEINET10507044  Aira caryophyllea Mary Susan Taylor 1980-5-27 Taylor 2691 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
  CHSC78219  Aira elegans Lowell Ahart 2000-5-17 8363 Butte On the south margin of the Thermalito Afterbay, on the north side of the poor dirt road, about 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  SEINET10839999  Alisma triviale Mary Susan Taylor 1975-10-3 Taylor 922 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC30981  Allium amplectens M. S. Taylor 1980-5-24 2744 Butte Peter Ahart Ranch, Honcut, along Rocky Honcut Creek. 50 Comment
  CHSC36907  Allium amplectens R. A. Schlising 1980-7-25 3920 Butte N part of county near Lomo, 1.9 m ne of jct Hwy. 32 with Humboldt Road. Carpenter Ridge. Comment
  CHSC2065  Allium cratericola V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  CHSC3533  Allium cratericola John Francis 1966-3-28 89 Butte Table Mt. Comment
  CAS-BOT-BC135817  Allium jepsonii B. Castro 1993-8-3 491 Butte Ca 1 mi S of Big Bar Mtn., 0.5 mi SE of Hungry Hunt Peak, on USFS rd 22N83 ca 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  CAS-BOT-BC472966  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  CHSC46418  Allium peninsulare Lowell Ahart 1989-5-10 6210 Butte About 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  UC600454  Allium platycaule H. F. Copeland 1932-7-16 Butte slightly w summit; Jonesville Comment
  SEINET10471994  Allium sanbornii var. jepsonii Mary Susan Taylor 1982-6-24 Taylor 4750 Butte T22N R4E se sec 23. Berry Creek quad. On serpentine rdcut, w side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70; ne of Oroville. 2200 ft. 670 Comment
  CAS-BOT-BC132115  Allium sanbornii var. sanbornii Lowell Ahart 1980-7-29 2501 Butte Along the edge of Forbestown Road Comment
  CHSC39056  Allium sanbornii var. sanbornii R. A. Schlising 1983-8-6 4432 Butte NE of Oroville and S of Brush Creek; E of Little Bald Rock. 1030 Comment
  CHSC43700  Allophyllum divaricatum Vernon Oswald 1986-5-6 1995 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. On a slope along the road. 457 Comment
  UC600663  Allophyllum integrifolium E. B. Copeland 1931-6-29 Butte along Butte Creek Jonesville; , Butte Creek 1500 Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  CHSC43172  Alopecurus aequalis Robert Banchero 1981-8-6 636 Butte Ca 3 air mi se of Jonesvill. 1853 Comment
  CHSC27056  Alopecurus carolinianus Lowell Ahart 1978-4-21 1660 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35649  Alopecurus carolinianus R. E. Preston 1982-4-7 233 Butte On banks of irrigation ditch which crosses Biggs-Princeton Hwy ca. 2.4 mi w of Biggs. 24 Comment
  JEPS114590  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 217 Comment
  SEINET10511013  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil of floor of rice field, Peter Ahart Ranch, ca. 2 mi. NE of Honcut. Very common; 50 m. Comment
  CHSC30543  Alopecurus saccatus J. D. Jokerst 1980-3-20 484 Butte E of Chico, 0.3 mi E of El Monte Ave, between Hwy 32 and Humboldt Rd. Comment
  SEINET3450788  Alopecurus saccatus Unknown 2003-5-28 10235 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  CHSC117422  Amaranthus albus Lowell Ahart 2016-5-30 20892 Butte North of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  SEINET10478740  Amaranthus albus Mary Susan Taylor 1978-9-8 Taylor 1888 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 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
  CHSC50638  Amaranthus deflexus Lowell Ahart 1990-5-28 6499 Butte About 2 1/2 miles north-east of East Gridley, along the edges of Palm Avenue, about 1/12 mile east of Larkin Road. 30 Comment
  CHSC80575  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the 'Deer Pen', Chico. 60 Comment
  CHSC89437  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  CHSC42946  Amaranthus powellii Lowell Ahart 1987-7-3 5756 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC50639  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte Along the edges of Palm Avenue, about 1 /12 mile east of Larkin Raod, about 21/2 miles north-east of East Gridley. 30 Comment
  CHSC85442  Amaranthus retroflexus R. D. Fischer 2003-10-25 13 Butte Chico. Located in northeast corner of town on the west side of Ceanothus Ave, cross street Brenni. Along drainage channel. 70 Comment
  CDA3283  Amaranthus rudis L. Ahart 1999-9-21 8267 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
  CDA34620  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. Comment
  UCR66526  Amelanchier alnifolia H. F. Copeland 1929-6-10 1208 Butte Northern Sierra Nevada Mtns., Jonesville 1524 Comment
  CHSC60585  Amelanchier utahensis Vernon H. Oswald; Lowell Ahart 1993-4-19 5285 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Between creek and the lookout. 774 Comment
  CDA36704  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. Comment
  CHSC38544  Ammannia coccinea Vernon Oswald 1983-7-8 838 Butte Upper Bidwell Park, Chico, near Upper Park Rd. in the depression draining Horseshoe Lake. 97 Comment
  JEPS104288  Ammannia coccinea Lowell Ahart 2003-6-23 10300 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  RSA0106528  Ammannia coccinea Lowell Ahart 2014-9-23 19867 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. 89 Comment
  SBBG119944  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yards E of Honcut, ca. 12 mi S of Oroville 30 Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  UC726941  Amsinckia A. A. Heller 1941-4-19 16068 Butte n side of Sandy Gulch (Richardson Springs Road; at places about Chico); Chico Comment
  CHSC4024  Amsinckia eastwoodiae Sadie Gaultieri 1967-3-16 Butte Collected on Hiway between Chico and Redding on Sycamore Ranch on S. side of Hiway. Comment
  CHSC3627  Amsinckia intermedia John Francis 1966-2-28 45 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  CHSC37417  Amsinckia intermedia Theresa Costa 1982-4-14 5 Butte Oroville. 20 ft w Hwy 162; oak savanah. Comment
  SEINET10969123  Amsinckia intermedia Mary Susan Taylor 1981-4-14 Taylor 3527 Butte T21N R3E se/ne sec 36, Cherokee quad. Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 450 ft. 137 Comment
  JEPS87496  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  CHSC37421  Amsinckia menziesii B. Castro 1982-4-21 18 Butte On banks of Singer Creek, ca.1 mi w of Hwy 99 off Haille Rd, ca. 12 mi n of Chico. 60 Comment
  CHSC44475  Amsinckia menziesii var. menziesii Lowell Ahart 1988-5-13 5999 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC137800  Andropogon virginicus var. virginicus John Thomas Howell 1959-9-20 34669 Butte Sierra Nevada. Eastern outskirst of Oroville. Lower foothills. 60 Comment
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  CDA13338  Angelica breweri G. F. Hrusa, T. D. Wilfred 1996-7-9 13184 Butte Sierra Nevada; on USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Sheet 1 of 2 Comment
  CHSC1961  Angelica californica R. M. Staley 1952-7-16 Butte Honey Run. 121 Comment
  CHSC98662  Antirrhinum cornutum B. Castro; L. P. Janeway 2005-8-3 1511 Butte Ca 20 air mi NNE of Oroville and 1.2 mi S of Flea Mtn, along Concow Rd ca 0.1 mi N of its jcn with Rim Rd. Along narrow path under power lines just W of Concow Rd, in small openings. 1002 Comment
  CHSC25337  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-12 30 Butte 100 m from the intersection of Highway 70 and Pulga Raod. 426 Comment
  CHSC63721  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte Along the south side of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  CHSC42125  Aphyllon purpureum Lowell Ahart 1980-5-29 2359 Butte On rock slides along the road south of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  CHSC104  Apocynum androsaemifolium 1954-5-30 Butte Kimshew Falls near Rag Dump 5, out from Stirling. 1097 Comment
  RSA253211  Apocynum androsaemifolium subsp. pumilum A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  UCD121510  Apocynum cannabinum L. Ahart 1977-6-13 1414 Butte Peter Ahart Ranch, Honcut. North Honcut Creek. 50 Comment
  SEINET10873858  Apocynum pumilum Mary Susan Taylor 1975-6-30 Taylor 812 Butte Ca. 500 yds E of Cohasset Hwy, behind Greenwood Store, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC392115  Aquilegia formosa H. F. Copeland 1920-8-29 149 Butte Jonesville 1219 Comment
  UC398917  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville 1550 Comment
  RSA0126438  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville. 1550 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
  CHSC102006  Arceuthobium abietinum L. P. Janeway; David Toren 2009-9-15 9953 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Wildcat Creek and Bear Ranch Creek, 3.6 air km north of Road 23N31. 1419 Comment
  POM180839  Arceuthobium abietinum Unspecified 1928-8-14 759 Butte Neighborhood of Jonesville. Near Butte Creek, above Jonesville. 1524 Comment
  CHSC43229  Arceuthobium campylopodum Lowell Ahart 1987-9-18 5886 Butte About 1 mile southwest of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  CHSC44407  Arceuthobium campylopodum Lowell Ahart 1988-6-29 6106 Butte At the intersection of Bean Creek Ranch Road and the road to the Andy Smith Ranch, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  NY9760  Arctostaphylos A. A. Heller 1928-1-17 14473 Butte About a mi below the Ten Mile House E of Chico, in red clay in the Upper Sonoran life zone. Comment
  CAS-BOT-BC27258  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Neal Road near the junctin of the first road E of the Bille Road, old sawmill site. East of Paradise. Comment
  RSA633005  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27462 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633008  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27455 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633009  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27465 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38872  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-19 15500 Butte Neal Road 3 miles west of paradise near the upper limit of the Upper sonoran Life Zone. Comment
  CHSC30353  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1979-2-12 1130 Butte Table Mt. Abundant at the W edge of North Table Mt. N of Cherokee Rd. Comment
  SBBG28822  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Humboldt Grade, about 12 mi from Chico Comment
  UC412700  Arctostaphylos manzanita subsp. manzanita W. P. Taylor 1912-5-27 Butte 4 mi N Oroville, Chambers Ravine Comment
  CAS-BOT-BC24251  Arctostaphylos mewukka Lowell Ahart 1985-2-17 4840 Butte Near Kunkle Res., about 2 mi. s. of Paradise. 550 Comment
  CHSC21242  Arctostaphylos mewukka M. S. Taylor 1975-9-12 910 Butte Ca. 24 mi NE of Chico, ca. 500 yds W of Hwy 32. 1066 Comment
  UC1094001  Arctostaphylos mewukka Lewis S. Rose 1955-6-15 55103 Butte 6 mi se Paradise (on Pentz Rd) 426 Comment
  UC725911  Arctostaphylos mewukka A. A. Heller 1942-3-22 16408 Butte two mi above Cohassett School House Comment
  CHSC44639  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-8-15 2146 Butte First ridgeline east of and paralleling Camp Cr. in the canyon of the North Fork Feather River. Comment
  CAS-BOT-BC45526  Arctostaphylos nevadensis H. F. Copeland 1920-7-8 40 Butte Divide between Tehama, Butte, and Plumas Counties. 1828 Comment
  LA42210  Arctostaphylos nevadensis E. B. Copeland; 1931-6-22 672 a Butte Jonesville, on ridge E of the Summit 2100.0 Comment
  RSA4476  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  CAS-BOT-BC46716  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC46721  Arctostaphylos patula M. S. Taylor 1976-8-24 1074 Butte Scattered on Big Bald Rock, ca. 1/4 mi. w. of Bald Rock rd., ca. 3 mi. e. of Lake madrone, ca. 13 mi. ne. of Oroville. 997 Comment
  CHSC588  Arctostaphylos patula subsp. patula L. Stone 1930-4-6 Butte Between Butte Meadows and Jonesville. 1280 Comment
  CHSC52398  Arctostaphylos viscida Neil Metcalf 1981-4-10 15 Butte Chico: E 2nd St and Hobart. 30 Comment
  UCD52197  Arctostaphylos viscida Joseph M. DiTomaso 1976-5-23 459 Butte California, Butte County: Lake Oroville, peninsula on south side. 274 Comment
  CAS-BOT-BC47368  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC48293  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51106 Butte Billie Road at Cliff Drive, Paradise 609 Comment
  CHSC108865  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC41391  Arenaria kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  CAS-BOT-BC137551  Aristida oligantha Lowell Ahart 1976-12-29 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CHSC108045  Aristida oligantha L. P. Janeway 2011-10-12 10772 Butte Cascade Range Foothills/Sacramento Valley. Upper Bidwell Park, Chico; 1.0 km southwest of Horseshe Lake, along Upper Park Road at the road to Five Mile Recreation Area, north side of Big Chico Creek. 91 Comment
  CAS-BOT-BC146314  Aristida ternipes var. gentilis Lowell Ahart 1983-8-16 4277 Butte Sierra Nevada. One mile east of Chico, on Highway 32. 100 Comment
  CAS-BOT-BC400432  Aristolochia californica John Thomas Howell 1967-6-22 42644 Butte 3 miles ne. of Pulga Bridge - Canyon of the Feather River North Fork Comment
  CHSC107079  Aristolochia californica V. Lockie 2010-3-2 Butte Found in the Fernwall area above Big Chico Creek, Upper Bidwell Park. 89 Comment
  UC687398  Aristolochia californica unknown 1896-2 151 Butte Butte Creek Canyon Comment
  CAS-BOT-BC295833  Arnica dealbata E. B. Copeland 1929-7-18 s.n. Butte Jonesville 1550 Comment
  CAS-BOT-BC82410  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC44894  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte About 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC93962  Arnica discoidea R. D. Fischer 2004-6-20 758 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants scattered in open YPF at the south end of camp and west of pond. 1371 Comment
  RSA4178  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 Comment
  CHSC46548  Arnica mollis Vernon H. Oswald; Lowell Ahart 1989-7-21 3872 Butte Butte Creek just upstream from the mouth of Colby Creek, on the SE side of Humboldt Rd, ca. 1 mi W of Jonesville. 1487 Comment
  CAS-BOT-BC85144  Arnica nevadensis Clarence R. Quick 1953-7-1 53 -31 Butte Sierra Nevada - Big Bar Mt. ridge east of Pulga Comment
  CAS-BOT-BC146274  Arrhenatherum elatius var. elatius Lowell Ahart 1987-5-27 5719 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC43195  Artemisia douglasiana Robert Banchero 1981-7-24 629 Butte Ca. 8.1 mi NE of jct of Humboldt Rd and Hwy 32, on Humboldt Rd. 1463 Comment
  NY43502  Artemisia douglasiana S. Bianco 1995-8-26 1021 Butte Concow area, E of Concow Rd, along Kakini Rd 762 Comment
  CHSC12608  Arundo donax S. Posner 1972-9-28 Butte Ca. 300 yds w of Nord Ave and ca. 250 yds s of Sacramento Ave, behind Trans-Pacific Gardens apartments (725 Nord Ave.) Chico. Comment
  CAS-BOT-BC400640  Asarum hartwegii Clarence R. Quick 1962-6-16 62 -36 Butte SW of road junction of Big Bend-Red Mountain road Comment
  CHSC33286  Asarum lemmonii R. A. Schlising; R. Banchero 1981-6-29 4126 Butte Rag Dump (NW of Pulga, N of Concow Res., E. of Magalia) at Fall Creek. 1158 Comment
  RSA0104727  Asclepias eriocarpa Lowell A. Ahart 2009-6-18 15915 Butte On the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC11795  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville. 1700 Comment
  CHSC24898  Aspidotis densa E. Rilla 1976-4-4 19 Butte Scattered on n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC24899  Aspidotis densa P. Laherty 1976-4-4 19 Butte Scattered on the n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC32625  Aspidotis densa M. S. Taylor 1981-3-31 3465 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC60939  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  POM193100  Aster eatonii E. B. Copeland 1930-8-26 487 Butte Jonesville 1500 Comment
  SEINET10475114  Aster eatonii Mary Susan Taylor 1979-9-28 Taylor 2200 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  POM55207  Aster radulinus Kate Conger 1907-1 150 Butte Brush Creek. Comment
  CHSC65199  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 mies north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  JEPS119575  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 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
  JEPS97430  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte 7 mi N of Oroville (North Table Mountain, along edge of dirt road, about 1/10 mi SE of reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  SEINET10452223  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-5-10 Ahart 4940 Butte Eastern Table Mountain area in gulchlands, about 8 miles north of Oroville. Comment
  CAS-BOT-BC192799  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CHSC2446  Asyneuma prenanthoides R. Carter 1965-7-6 276 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd. on E bank above road. 914 Comment
  CHSC95084  Asyneuma prenanthoides L. P. Janeway 2006-6-25 8703 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  JEPS124222  Athyrium distentifolium var. americanum Lowell Ahart 2015-10-9 20549 Butte About 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir Dam. Comment
  CAS-BOT-BC68692  Athyrium filix-femina var. californicum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi. ne of Stirling City. Pulga NW quad. 1463 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC12168  Athysanus pusillus Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3954  Athysanus pusillus E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards Ne. of Chico Municipal Golf Course. 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
  POM219647  Athysanus pusillus H. F. Copeland 1928-4-3 431 Butte Canyon of Butte Creek. Comment
  CAS-BOT-BC168563  Atriplex cordulata Lowell Ahart 1983-9-19 4454 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles southwest of Gridley 35 Comment
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  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
  CHSC61032  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W side of a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC176603  Atriplex serenana var. serenana Lowell Ahart 1989-9-28 6400 Butte On the east side of Highway 70, near Garden Drive off ramp, Thermalito 73 Comment
  JEPS90625  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  JEPS90628  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  JEPS90629  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC46431  Avena barbata Lowell Ahart 1989-5-23 6233 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC46432  Avena barbata Lowell Ahart 1989-5-10 6216 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC9341  Avena barbata B. Anthony 1968-3-29 414 Butte Chico State College Campus, Chico. Comment
  CAS-BOT-BC145880  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  CHSC4416  Avena fatua J. Francis 1966-5-9 Butte Vacant lot at intersection of Arcadian and Mansion Ave., Chico. Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS124325  Azolla filiculoides Lowell Ahart 2015-10-20 20570 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC34140  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Ca. 3/4 mi NE of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 1/8 mi S of the ORO Bangor Hwy, ca. 5 mi NE of Palermo. 100 Comment
  CHSC26835  Barbarea orthoceras M. S. Taylor; M. Hayes 1978-6-24 1654 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  CHSC90616  Barbarea orthoceras Sean P. Gallagher 1988-4-20 8 Butte Ca. 0.5 mi w of highway 32 n side of Big Chico Creek. 89 Comment
  CHSC20535  Berberis Pamela Caldwell 1971-10-8 Butte W side of Library. CSUC campus. Comment
  JEPS119511  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-2 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. Comment
  CHSC46017  Bergia texana Lowell Ahart 1974-9-8 628 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65198  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch, about 1-1/2 miles north and 3/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC96901  Bergia texana Lowell Ahart 2007-7-24 14389 Butte On the bottom of a large wash (area has had gravel removed), Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  CAS-BOT-BC102070  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC11920  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  UCD73334  Blennosperma nanum Chuck Hughes 2008-3-26 25 Butte North Table Mountain. 396 Comment
  RSA41142  Boisduvalia cleistogama Robert F. Hoover 1937-5-19 2242 Butte 10 miles northwest of Chico Comment
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 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 1.1, Sanctuary II. 33 Comment
  CHSC88175  Botrychium minganense Lowell Ahart 2004-7-23 11288 Butte About 15 feet west of the small stream, 47-55 feet north of the large round 10 feet tall boulder, northeast of Memorial Spring, east side of Humbug Road, about 2 miles (air) wet of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1554 Comment
  CDA20151  Boykinia occidentalis B. Smith August 1996 s.n. Butte Plumas National Forest; 1.5 mi S of Feather Falls along Owl Creek. 0 Comment
  CHSC110141  Brachypodium distachyon L. P. Janeway 2012-4-29 10806 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, upper slope overlooking Big Chico Creek from the south; about 1.8 km east of the powerlines. 183 Comment
  CHSC42850  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC96749  Brassica juncea Lowell Ahart 2007-6-3 13975 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) west of Concow Reservoir. 415 Comment
  CHSC38061  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CAS-BOT-BC106320  Brickellia californica Lowell Ahart 1980-9-10 2631 Butte 1 mile north-east of Milsap Bar - Sierra Nevada 900 Comment
  SBBG128796  Brickellia californica L. Ahart 2012-10-20 18496 Butte soil and gravel bar on S side of Big Chico Crk, ca. 50 yards W of Table 4, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  CHSC89035  Briza maxima A. Peterson 2003-5-6 75 Butte Southeast of Chico, Pentz Rd near jct with Magalia Hwy, on road shoulder. 213 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
  CHSC32370  Briza minor J. D. Jokerst 1979-5-2 1228 Butte Top of North Table Mt., ca. 200 m S of Cherokee Rd. 396 Comment
  SEINET10967594  Briza minor A. Arthur Heller, H. E. Brown 1902-5-6 Heller 5475 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC482210  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  POM253053  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte In fields near Chico Airport. Comment
  UCD77203  Brodiaea coronaria Robert E. Preston 2003-5-18 2140 Butte Ca. 2.25 mi N of Cana, along Cana-Pine Creek Rd, ca. 0.4 mi N of Pine Creek 51 Comment
  JEPS127076  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 Butte 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 3/4 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC482199  Brodiaea elegans subsp. elegans A. A. Heller 1914-5-11 11385 Butte Hills 8 miles north of Oroville Comment
  CDA39462  Brodiaea minor L. P. Janeway 2000-5-14 6721 Butte Sacramento Valley; East side of Pine Creek Road 0.3 mile north of Pine Creek Comment
  CHSC71203  Brodiaea minor Lowell Ahart 1988-6-9 7983 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC484503  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  CAS-BOT-BC484505  Brodiaea minor A. A. Heller; H. E. Brown 1902-5-10 5524 Butte Berry Canyon near Clear Creek Comment
  CAS-BOT-BC484576  Brodiaea purdyi Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CDA1783  Bromus alopecuros L. Ahart 2002-5-15 9662 Butte About 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine. Comment
  CHSC42905  Bromus carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  SEINET10967307  Bromus carinatus M. E. Banning 1969-7-3 Banning 10 Butte Across from Chico Jr. Hi, on S. side of Memorial Way Chico. 61 Comment
  CHSC112437  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the east side of Black Bart Road, about 3/4 miles (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC27294  Bromus catharticus P. Moyer 1972-4-16 184 Butte CSUC campus. S bank Chico Ck., w of New Dorm Bridge. 60 Comment
  CHSC31732  Bromus catharticus L. Ahart 1979-5-3 1855 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC155946  Bromus commutatus Lowell Ahart s.n. Butte 2 miles southeast of Paradise. 500 Comment
  JEPS117561  Bromus hordeaceus Lowell Ahart 2010-6-20 16816 Butte Under the government pole line, about 20 yards south of the pole, about 50 yards north of Wyandotte Creek, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 64 Comment
  CDA30201  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. Comment
  CHSC39961  Bromus japonicus L. Ahart; P. Ahart 1983-6-26 4143 Butte Around a meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. 550 Comment
  CHSC109548  Bromus laevipes L. P. Janeway 2012-6-7 10871 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC39523  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte On the cut-bank along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  CHSC74153  Bromus laevipes B. Castro; E. Hubert 1996-7-16 685 Butte Black Jack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on slope of recently burned area at edge of forest. Near drainage. 1158 Comment
  UCD80526  Bromus laevipes CNPS SN Foothill Team 2005-5-4 Survey Butte Bidwell Park. Comment
  SEINET11688365  Bromus laevipes Unknown 1985-1 4987 Butte E of dirt road, ca 1.5 mi NE of Concow Reservoir, NE of Oroville 732 Comment
  CHSC101324  Bromus madritensis subsp. rubens Lowell Ahart 2009-4-17 15557 Butte South slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CAS-BOT-BC162205  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On west side of Highway 32 on edge of forest. Ca. 0.25 mile north of Forest Ranch. 718 Comment
  SEINET10507840  Bromus orcuttianus Mary Susan Taylor 1978-7-18 Taylor 1674 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  SEINET11683502  Bromus rubens Unknown 1969-1 268 Butte just E of trail to Salmon Hole in Upper Bidwell Park (E of Chico) 61 Comment
  CDA13291  Bromus suksdorfii G. F. Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  JEPS115284  Calandrinia ciliata Lowell Ahart, John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  CHSC54362  Callitriche heterophylla M. Bailey 1991-4-17 563 Butte E side of Pentz-Magalia Road, ca 0.2 mi n of its jct with Hwy 70. Roadside ditch. 152 Comment
  SEINET10457155  Callitriche heterophylla subsp. bolanderi Lowell Ahart 1985-5-10 Ahart 4946 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC46286  Callitriche heterophylla var. bolanderi Vernon Oswald 1989-5-17 3777 Butte Wurlitzer Unit, Vina Plains Preserve. Along the edge of the farm pond. 56 Comment
  SBBG28817  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, W of North Willow Crk 1650 Comment
  SEINET175334  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte On ridge W of North Willow Creek Jonesville 1650 Comment
  SD6514  Calochortus coeruleus Daniel Cleveland Jul 1882 Butte Sutton House. Comment
  CHSC20263  Calochortus luteus Linda Homze 1972-4-24 6 Butte Collected at Salmon Hole in upper Bidwell Park. Comment
  CAS-BOT-BC491854  Calochortus luteus A. A. Heller; H. E. Brown 1902-5-8 5494 Butte Berry Canyon, near Clear Creek Comment
  CHSC3421  Calochortus monophyllus Judy Potter 1966-4-17 212 Butte Across from 5174 Pentz-Magalia Road, (now 5081 Wilderness Way/Pentz Rd, as of 2/4/1987). Comment
  CHSC44980  Calochortus monophyllus R. E. Alumbaugh 1984-4-26 15 Butte Scattered 1.2 mi n of Butte creek and 5 ft e of Centerville rd, across from Centerville cemetary, 0.9 mi n of Centerville. 350 Comment
  CHSC84919  Calochortus monophyllus Janice Morris 1995-4-24 91 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  SEINET7073601  Calochortus monophyllus A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  UC3375  Calochortus monophyllus Carl Purdy 1821-1 Butte Chico Comment
  RSA113230B  Calochortus monophyllus E. K. Balls, Lee W. Lenz 1955-5-13 20691 Butte Along road from Oroville - Magalia to U.S. Highway alt. via Pentz 488 Comment
  POM219307  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CHSC57550  Calochortus tolmiei Gail Bufton 1990-4-24 23 Butte Ca. 0.7 mi ne of intersection of Coutolenc Rd. and Skyway. Ca. 16 mi ne of Chico. 701 Comment
  SEINET3885390  Calochortus tolmiei D. W. McNeal 1981-5-10 2485 Butte Above a rd. cut on the rd. from Paradise to Butte Meadows 4.6 mi. n. of the terminous of Hwy. #191 in Paradise.; 0 Comment
  RSA300139  Calycadenia hispida L. Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC34139  Calycadenia multiglandulosa Lowell Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, ca. 1 1/2 mi N and 2 1/4 mi E of Honcut. 50 Comment
  CAS-BOT-BC270009  Calycadenia multiglandulosa Lowell Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CAS-BOT-BC106092  Calycadenia oppositifolia A. A. Heller 1926-5-22 13940 Butte Along the Richardson Springs Road three miles north of Chico. Comment
  CAS-BOT-BC106096  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road 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
  POM31432  Calycadenia oppositifolia Mrs. R. M. Austin 1883-05 s.n. Butte Chico Creek Comment
  UC1094002  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e of Pentz (canyon of W Branch of N. Fork of Feather River); N. Fork of Feather River 182 Comment
  JEPS106137  Calycadenia truncata Lowell Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  SDSU6419  Calycadenia truncata D. F. Howe 1960-9-20 2981 Butte Feather River Canyon, 8 miles from Oroville. 152 Comment
  UCR88046  Calycadenia truncata subsp. scabrella C. R. Quick 1964-7-9 64- 62 Butte Sierra Nevada Mtns., north of Jarbo Gap Comment
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Oct 10 2010
  CAS-BOT-BC275394  Calycadenia truncata var. truncata Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  SD1523  Calyptridium monospermum J. B. Copeland 1930-7-9 Butte Jonesville 1500 Comment
  UC426905  Calyptridium monospermum J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CHSC99549  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2008-5-26 9392 Butte Northern High Sierra Nevada. Along top of low ridge just west of the saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  JEPS113310  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. Comment
  CHSC94105  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  CHSC70521  Calystegia occidentalis subsp. fulcrata R. A. Schlising 1972-5-4 3064 Butte W of Wrightwood in Angeles National Forest; at Grassy Hollow Campground, 2.6 mi W of junction N2 and Angeles Crest Hwy at Big Pines Station. Comment
  RSA394851  Calystegia occidentalis subsp. occidentalis L. Ahart, Peter Ahart 1984-6-10 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC20350  Calystegia occidentalis subsp. occidentalis L. V. Ritter 1969-5-5 306 Butte Ca. 2 mi. W of Cohasset, ca 10 yds. S of Cohasset Highway. 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
  CHSC34979  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1974-6-5 3136 Butte 9.9 mi NE of Chico along Hwy 32. 512 Comment
  CAS-BOT-BC493366  Camassia quamash subsp. breviflora Lowell Ahart 1988-6-15 6038 Butte North of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC108832  Camissonia contorta Lowell Ahart 2012-4-17 17882 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC48619  Camissonia contorta Vernon Oswald 1988-3-17 3259 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 54 Comment
  RSA37526  Camissonia tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Highway 97, Butte Creek Comment
  SEINET10463241  Campanula prenanthoides Carter 1965-7-6 Carter 276 Butte 1.4 miles north of Mountain House on Oroville-Quincy road on east bank above road 914 Comment
  SEINET10463342  Campanula prenanthoides Dunning 1921-8-25 DUNNING s.n. Butte MERRIMAC Comment
  SEINET10840318  Campanula prenanthoides Taylor 1978-7-18 Taylor 1673 Butte On west side of Highway 32 on edge of Yellow Pine Forest, in dry open area, about 0.25 mile north of Forest Ranch 718 Comment
  CAS-BOT-BC37064  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 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
  CAS-BOT-BC37065  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico. Comment
  SEINET10448264  Capsella bursa-pastoris Mary Susan Taylor 1975-3-3 Taylor 399 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  CAS-BOT-BC37267  Cardamine breweri Clarence Roy Quick 1963-7-16 63 50 a Butte Sierra Nevada. Section Corner Meadow, east of Pulga. Feather River Canyon. 1463 Comment
  RSA0116210  Cardamine californica Mrs. R. M. Austin 1883-04 21 Butte Little Chico Creek. Comment
  CHSC34480  Cardamine oligosperma J. DiVittorio 1974-3-20 1 Butte S side of Holt Hall, Cal. State University, Chico campus in planter. 57 Comment
  CHSC87446  Cardamine oligosperma R. D. Fischer; Jenny Marr 2004-4-2 80 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail, south of Pine Trail junction. 399 Comment
  RSA715722  Cardamine oligosperma L. P. Janeway 2005-3-1 8335 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 Comment
  CAS-BOT-BC37881  Cardamine oligosperma Lowell Ahart 1980-3-8 2031 Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC83934  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River. 341 Comment
  JEPS94568  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  CAS-BOT-BC17809  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek, on the north side of Bean Creek Road, about 0.75 mile southeast of Little Bald Rock. 944 Comment
  UCD140099  Carex angustata L. P. Janeway; R. A. Schlising 1988-7-16 3006 Butte along Willow Creek 1/2 mile NW of Jonesville. 1508 Comment
  CHSC42822  Carex aurea L. P. Janeway 1987-6-20 2273 Butte Near Fall River, 3.0 mi north of the Feather Falls-Lumpkin Ridge Rd along the rd to Fall River and Cascade. 1013 Comment
  HSC87280  Carex aurea L. P. Janeway, Robert A. Schlising 1988-7-16 3011 Butte Adjacent to Jones Creek at crossing of road to Scotts John Creek. 1616 Comment
  CHSC43915  Carex barbarae L. P. Janeway 1987-6-8 2167 Butte Sandy flat along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  UC1586586  Carex bolanderi Vernon H. Oswald and Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway, on the edge of Palermo Canal); Lake Oroville Recreation Area, Dan Beebe Trail 170 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  CHSC115743  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25712 Butte Northern Sierra Nevada Highlands. 0.5 air miles NE of Litte Bald Rock, NE of and below Bean Creek Road 0.6 road miles from Bald Rock Road. 1005 Comment
  CHSC95030  Carex cyrtostachya L. P. Janeway 2006-8-6 8826 Butte Northern High Sierra Nevada. Near road along west side of Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  JEPS103115  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
  SD257096  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca. 4.0 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC84723  Carex densa L. P. Janeway; John Hunt 2003-5-8 7780 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  SEINET7556723 Image available Carex densa L. P. Janeway 2003-6-8 7820 Butte Pulga 7.5' quad. High Cascade Range. Flea Valley. Meadow at head of Concow Creek. Comment
  CHSC44934  Carex feta Lowell Ahart 1988-7-31 6159 Butte On the south side of the road, a little south-west of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City. 1066 Comment
  CHSC99431  Carex feta Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11405 Butte Ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1447 Comment
  CHSC36892  Carex gracilior L. Ahart 1982-5-28 3441 Butte Near North Honcut Creek, n of the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC78177  Carex gracilior Lowell Ahart 2000-5-18 8374 Butte On the bottom of the Clay Pit, near the cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) sothwest of Oroville. 36 Comment
  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
  SEINET4231861 Image available Carex gracilior Unknown 2009-1 15710 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 milesortheast of Chico. Comment
  CHSC43919  Carex heteroneura var. heteroneura L. P. Janeway 1986-9-1 1836 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CHSC42817  Carex hirtissima L. P. Janeway 1987-6-27 2369 Butte 2.0 mi W of Bald Mtn along rd to Stirling City. 1493 Comment
  SEINET7561551 Image available Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Pulga 7.5' Quad. High Cascade Range. Flea Valley, meadow at head on Concow Creek. 1116 Comment
  CHSC43875  Carex laeviculmis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles. 1987-7-19 2501 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. 1661 Comment
  CHSC42821  Carex lemmonii L. P. Janeway 1987-6-19 2244 Butte Along Barton Hill Rd towards Sly Cr Reservoir, 1.7 mi from the Challenge-LaPorte Rd and Travis Saddle. 1066 Comment
  CHSC61341  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte Edge of a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  UC406292  Carex lemmonii E. B. Copeland 1929-7-28 Butte Jonesville Comment
  SJSU5739  Carex leptopoda Lewis S. Rose 1963-6-5 63140 Butte N Fork Feather R, Arch Rock Tunnel 487 Comment
  JEPS105277  Carex luzulina var. ablata Dean W. Taylor 1995-8-6 15393 Butte ca. 5 air miles NE of Stirling City; boggy meadow 0.5 miles E of Bald Mtn summit; Lassen National Forest 1219 Comment
  JEPS117593  Carex luzulina var. ablata Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  CAS-BOT-BC32158  Carex multicaulis L. P. Janeway; Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 2493 Butte Butte Meadows quad. Near Humbug summit Rd ca 5.5 mi N of Inskip, 1539 Comment
  CHSC42385  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  HSC87068  Carex multicaulis L. P. Janeway, R. A. Schlising, B. Castro 1987-4-4 1969 Butte Paradise Lake, SE shore 686 Comment
  CHSC45060  Carex nervina Vernon Oswald 1983-7-19 879 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  CAS-BOT-BC119558  Carex nudata A. A. Heller 1913-6-7 10818 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC30507  Carex nudata J. D. Jokerst 1980-3-15 477 Butte Jct of Clear Cr and Clear Creek Cemetary Rd. 121 Comment
  CHSC52244  Carex nudata L. P. Janeway 1987-5-20 2084 Butte At the edge of North Fork Feather River, 5.0 mi NE of the Pulga Bridge. 457 Comment
  SEINET8989731 Image available Carex pachystachya Unknown 2003-1 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  CHSC88363  Carex pendula L. P. Janeway 2004-6-20 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. 59 Comment
  JEPS120127  Carex pendula Lowell Ahart 2012-5-31 18116 Butte On the north side of Comanche Creek, on the east side of Highway 99, Chico. Comment
  SEINET12649677 Image available Carex pendula Peter F. Zika 2010-1 24824 Butte 45 Comment
  CAS-BOT-BC117390  Carex senta A. S. Crafts s.n. Butte On Ponderosa Way, Yankee Hill. 914 Comment
  SEINET12649898 Image available Carex subbracteata L. P. Janeway 2011-1 10229 Butte 57 Comment
  CHSC111097  Carex subfusca Lowell Ahart 2012-6-28 18242 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  UC1108993  Carex subfusca H. F. Copeland 1932-7-14 Butte vicinity Jonesville; Lassen National Forest Comment
  CHSC102214  Carex xerophila L. P. Janeway 2009-11-22 9968 Butte Northern High Sierra Nevada (northern edge). 'Magalia serpentine;' east side of Coutolenc Road about 0.1 km north of Skyway; between Skyway and the first bend of the gated road down to 'Magalia 72 Dam' diversion on West Branch Feather River. 700 Comment
  HSC103679  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'. 707 Comment
  UC2026858  Carya illinoinensis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18018 Butte On the north side of Big Chico Creek, on the north side of the paved park road, southeast of the old walnut orchard, south Vallombrosa Avenue, about 1/8 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC52372  Castilleja affinis J. D. Jokerst 1985-3-31 2189 Butte Top of North Table Mountain at its west edge ca. 1/2 mile NW of Phantom Falls adjacent to an unnamed creek and waterfall. 396 Comment
  SEINET263349 Image available Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte About 1/10 mile NW of the West Branch Bridge across Lake Oroville 290 Comment
  CHSC25364  Castilleja applegatei subsp. pinetorum Marc P. Hayes 1977-3-20 1 Butte Ca. 2.6 km nw of Jarbo Gap, 4.1 km ssw of Pulga, 10 m on n side of Hwy 70. 650 Comment
  CHSC39267  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. Section 1. 550 Comment
  RSA769603  Castilleja applegatei subsp. pinetorum L. Ahart 2009-4-22 15594 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC1063041  Castilleja applegatei subsp. pinetorum P. L. Johannsen 1936-7-17 933 Butte 2.5 mi sse Butte Meadow; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  CHSC2827  Castilleja attenuata David Prall 1965-3-14 13 Butte Neal Rd. 1 mile east of Hw. 99E. 106 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
  CHSC61015  Castilleja campestris subsp. campestris Lowell Ahart 1993-5-17 6950 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 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-BC241129  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC37450  Caulanthus lasiophyllus L. Ahart 1982-5-29 3445 Butte Peter Ahart Ranch, ca. 1.5 mi n and 2 1/4 mi e of Honcut. 50 Comment
  UC1281468  Ceanothus H. E. McMinn 1946-5-11 5512 Butte one mi e Forbestown; e of Forbestown Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  CHSC32664  Ceanothus cuneatus M. S. Taylor; D. Hemphill 1981-3-18 3431 Butte Open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd (Ponderosa Way), ca. 1 air mi ne of Magalia. 701 Comment
  SEINET12210971  Ceanothus cuneatus M. P. Howe 1984-1 12 Butte Doe Mill Summit 579 Comment
  JEPS113416  Ceanothus diversifolius Lowell Ahart, Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  CHSC101150  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  CAS-BOT-BC51728  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope fo the Sierra near Forest Ranch 822 Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  RSA512836  Ceanothus lemmonii J. T. Howell 1962-6-15 37446 Butte Serpentine area, Magalia 732 Comment
  CAS-BOT-BC52010  Ceanothus prostratus John Thomas Howell 1978-4-18 52850 Butte De Sabla 853 Comment
  UC726726  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  CHSC6012  Cedrus deodara M. MacArthur 1968-6-19 252 Butte Lawn in front of CAC and next to NE end of Library bld., Chico State College. 60 Comment
  CHSC111395  Celtis australis Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17997 Butte On dry dark deep excellent soil, 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. 76 Comment
  CHSC109671  Celtis occidentalis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west of the parking area, Lower Bidwell Park, Chlico. 71 Comment
  CHSC103998  Centaurea melitensis Lowell Ahart 2010-6-20 16835 Butte About 3/8 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. 55 Comment
  CHSC293  Centaurea melitensis M. Roberson 1956-6-4 Butte Near Paradise along Skyway. 548 Comment
  JEPS98719  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
  UC894388  Centaurea melitensis A. A. Heller 1916-4-13 12323 Butte e of Chico (Stilson Canon); Stilson Canon Comment
  UCD80047  Centaurea melitensis CNPS SN Foothill Team 2005-5-24 SNFN 0172 a Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico creek, about 75 m from the canyon rim. 338 Comment
  SEINET10474154  Centaurea melitensis Mary Susan Taylor 1981-3-24 Taylor 3447 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  JEPS115250  Centaurium muehlenbergii Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  POM76325  Centaurium muehlenbergii C. C. Bruce 1897-05 2007 Butte [Unspecified] Comment
  CHSC109599  Centaurium tenuiflorum Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18123 Butte On the south side of the paved park road (Peterson Drive) about 100 yards west of the gate, lower Bidwell Park, Chico. 76 Comment
  CHSC42710  Centaurium tenuiflorum Lowell Ahart 1987-6-9 5744 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
  SEINET10840940  Centaurium tenuiflorum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4128 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC28807  Centromadia fitchii J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 411 Butte Top of north Table Mt, 100 m N of Cherokee Rd. 396 Comment
  CHSC51997  Centromadia fitchii M. S. Taylor 1975-6-25 806 Butte Above Mud Ck., ca .5 mi n of Richardson Sprgs. Hotel, ca. 6 mi ne of Chico. 243 Comment
  CAS-BOT-BC288529  Centromadia fitchii Forman T. McLean 1921-10-18 30 Butte Nelson Comment
  SEINET10971587  Cephalanthera austiniae Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4709 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  RSA722686  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC92510  Cerastium glomeratum Lowell Ahart 2005-12-11 12524 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
  JEPS103292  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  SEINET10452399  Cercis occidentalis Mary Susan Taylor 1975-4-25 Taylor 502 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CHSC99573  Cercocarpus betuloides var. betuloides L. P. Janeway 2008-5-26 9368 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  CHSC49825  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-4 4149 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  UC884528  Chamaesaracha nana A. A. Heller 1917-7-29 12866 Butte summit above Jonesville 2133 Comment
  CHSC40362  Chamaesyce maculata Lowell Ahart 1985-7-9 5111 Butte Near a large slab of cement, on a side road 100 yards west of Ponderosa Way, about 1/4 mile north-west of the Ponderosa Dam across the South Fork of the Feather River. 292 Comment
  CHSC88927  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  SEINET263347  Chamaesyce nutans V. H. Oswald, L Ahart 1991-8-28 4850 Butte Rice Experiment Station on the south side of Hwy 162 ca. 3.5 mi NNW of Biggs 30 Comment
  CHSC97268  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2007-8-19 14492 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CHSC103007  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-9-13 16404 Butte On the bottom of a large wash, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Common. 30 Comment
  CHSC30762  Chamaesyce serpillifolia subsp. serpillifolia M. S. Taylor 1978-9-8 1887 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  UC392211  Chamerion angustifolium subsp. circumvagum E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  CHSC39234  Cheilanthes gracillima M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC44612  Cheilanthes gracillima Vernon Oswald 1985-4-29 1733 Butte Big Bald Rock. 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
  CHSC83894  Cheilanthes gracillima Lowell Ahart 2003-4-15 10099 Butte Steep slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  SEINET10529942  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3465 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  SEINET10479039  Chenopodium ambrosioides Mary Susan Taylor 1980-10-6 Taylor 3358 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
  POM312488  Chenopodium ambrosioides var. ambrosioides H. L. Mason, Verne Grant 1946-8-14 13026 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  SEINET10871663  Chenopodium botrys Lowell Ahart 1984-8-19 Ahart 4781 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  UCD97854  Chenopodium missouriense G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  JEPS103449  Chenopodium pumilio Lowell Ahart 2002-10-17 9990 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS108956  Chenopodium 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
  CHSC30704  Chimaphila menziesii M. S. Taylor 1980-5-27 2658 Butte On trail from parking lot to Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  POM174392  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte Jonesville. Comment
  SD3529  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville Scattered or solitary in coniferous woods. 1600 Comment
  CAS-BOT-BC451372  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  SEINET10449191  Chimaphila menziesii Mary Susan Taylor 1981-5-13 Taylor 3704 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  JEPS50844  Chlorogalum angustifolium Glen Keator 1967-5-20 GV 1 Butte 7 mi s Oroville Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS119767  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  SEINET7073000  Chorizanthe polygonoides A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles northwest of Oroville on Route 149 at junction with Dry Creek. Coordinate datum: WGS84/NAD83. (39? deg. 36' 28" North Latitude; -121? deg. 40' 12" West Longitude. UTM Zone 10, 614172mE, 4384858mN. Coordinate datum: NAD27). Comment
  JEPS117238  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-16 16705 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 381 Comment
  SEINET10473689  Chrysanthemum leucanthemum Mary Susan Taylor 1982-8-16 Taylor 4993 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
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  CHSC20493  Cichorium intybus M. S. Taylor 1975-6-25 795 Butte Along Mud Creek, ca. 1/4 mi N of Richardson Springs Hotel, ca. 6 mi NE of Chico. 121 Comment
  CHSC34138  Cicuta douglasii L. Ahart 1981-9-19 3184 Butte Along the edge of Feather River, ca. 100 m s of Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  UC177565  Cirsium andersonii H. M. Hall 1914-6-30 9817 Butte northern Butte County Sierra Nevada Mountains 1615 Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC278079  Cirsium douglasii var. breweri H. F. Copeland 1920-8-12 128 Butte Jonesville 1219 Comment
  CAS-BOT-BC288040  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  RSA59599  Cirsium occidentale var. venustum Verne Grant, Alva Grant 1950-7-15 8956 Butte 11 miles N of Chico on Hwy 32 Comment
  SEINET10473708  Cirsium proteanum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4075 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
  UC1564789  Cirsium scariosum var. americanum V. Oswald and L. Ahart 1989-6-27 3828 Butte 3.3 mi (air) se Jonesville (Humbug Rd. at Butte Creek House); Butte Creek 1767 Comment
  SEINET10865742  Clarkia Tim Holtsford 1992-5-25 Holtsford 920525 -1-B Butte Silvera court, 0.1 mi w of pentz rd, near lime saddle rec area. Ceanothus, arctostaphylos, oaks, buckeyes. Comment
  CHSC61161  Clarkia arcuata Vernon H. Oswald 1993-5-18 5398 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CAS-BOT-BC163545  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte On the stony slope back of the Salmon Hole 152 Comment
  CDA37981  Clarkia arcuata L. Ahart 1998-6-3 7976 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC89904  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CAS-BOT-BC164525  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-3 63 -54 Butte 12 miles northeast of Chico 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
  SFV10925  Clarkia mildrediae M. L. Vincent 1968-6-10 848 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  SEINET10973132  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4186 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CAS-BOT-BC163265  Clarkia mildrediae subsp. lutescens Clarence R. Quick 1952-7-1 52 -125 Butte Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  CAS-BOT-BC163268  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock 944 Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  JEPS93187 Image available Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4837 Butte along Road 23N28 200 ft se Chino Creek (4.6 mi n <of? written as or> Road 22N34, s-facing roadcut bank); Berry Creek quad., Chino Ridge 804 Comment
  CAS-BOT-BC163274  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1984-7-19 4745 Butte Near the dirt road about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC44635  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1988-6-21 6051 Butte Near the North Fork of the Feather River, at the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  LA206070  Clarkia mildrediae subsp. mildrediae Brian Le Neve; 1996-7-4 82 Butte French Creek Road Comment
  CHSC74102  Clarkia mosquinii B. Castro; L. Gehrung 1998-8-19 822 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, 100-300 ft W of Oro-Quincy Hwy on SE-facing side of SW-trending ridge E of Get-Up-and-Get Creek. 1210 Comment
  CHSC82697  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
  UCD104851  Clarkia purpurea H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  CHSC88061  Clarkia purpurea subsp. viminea R. D. Fischer 2004-5-30 187 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 3.0 miles s. of this junction. UTM: 10616846E 4407606N. 420 Comment
  CAS-BOT-BC164782  Clarkia rhomboidea H. F. Copeland 1931-6-10 1520 Butte Jonesville. Rocky crest of ridge between Willow and Colby Creeks 1676 Comment
  CHSC1114  Clarkia rhomboidea R. Carter 1964-5-16 91 Butte Feather River Canyon, 1/4 mi. W of Cresta powerhouse on S side of Hwy. 40A. 670 Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  CHSC56063  Claytonia palustris L. P. Janeway 1988-6-16 2813 Butte Along Butte Creek, 1.4 mi south of Humboldt Road via the road in the west side of the canyon. 1264 Comment
  SEINET13094404  Claytonia palustris John R. Swanson 1959-1 490 Butte Jonesville, meadow above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel. 1550 Comment
  CHSC32637  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-4-2 3467 Butte In serpentine gravel at base of cliff, se side of Forbestown Reservoir, s of rd 20N29, ca. 3 mi n of Woodleaf. 548 Comment
  CHSC33698  Claytonia parviflora subsp. parviflora L. Ahart 1981-4-9 2755 Butte On dry grassy soil on banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC33699  Claytonia parviflora subsp. parviflora L. Ahart 1981-4-9 2756 Butte On dry grassy soil on banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC87421  Claytonia parviflora subsp. parviflora R. D. Fischer 2004-3-15 111 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along the beginning of 10 Mile House Road near parking area at Hwy 32. 469 Comment
  JEPS119552  Claytonia perfoliata subsp. intermontana Lowell Ahart 2012-2-22 17743 Butte About 100 yards east of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC34943  Claytonia perfoliata subsp. perfoliata W. A. Vaccaro 1976-4-17 2 Butte Pop. scattered N side of Humbug Rd., ca. 2 mi. E of Centerville. 129 Comment
  CHSC3749  Claytonia rubra subsp. rubra R. L. Adams 1964-4-12 59 Butte Skyway, 1/2 mi. S. on Elliott Rd. Paradise. Comment
  CAS-BOT-BC91351  Clematis lasiantha Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 48 Butte About 5 miles south of Paradise on Pentz Road, at intersection with Kuncle Reservoir Road. Comment
  CHSC1438  Clematis lasiantha J. Koopman 1929-4-18 Butte Honey Run canyon. 396 Comment
  CHSC20059  Clematis lasiantha M. S. Taylor 1975-4-25 491 Butte Ca. 1/2 mi e of Cohasset Hwy, along dirt road, ca. 10 mi ne of Chico. Comment
  CHSC52783  Clematis lasiantha K. Glozer 1975-4-22 11 Butte Ca. 5 mi. ne of Chico and ca. 200 yd. e of stage watering trough on Cohasset Hwy. 167 Comment
  CHSC45722  Collinsia heterophylla Phillip Scott 1988-4-18 33 Butte Vic. Chico Municipal Golf Course, ca. 3 mi ne of Chico. 91 Comment
  UC103389  Collinsia heterophylla Mrs. R. M. Austin Apr 1896 125 Butte Little Chico Creek Comment
  CHSC1735  Collinsia sparsiflora H. Summers 1929-3-25 Butte Richardson Springs Road. 152 Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC26839  Collinsia torreyi M. S. Taylor 1978-6-24 1648 Butte Humbolt Summit, Butte Co and Tehama Co line. 2133 Comment
  CHSC38589  Collomia heterophylla Vernon Oswald 1983-4-17 328 Butte Upper Bidwell Park, Chico, beside the trail between Brown's Hole parking lot and the creek. 207 Comment
  CHSC42554  Collomia heterophylla Lowell Ahart 1987-5-6 5533 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC1623  Comandra umbellata subsp. californica V. Holt 1935-5-3 Butte Butte Creek. Bank of road cut. 121 Comment
  CHSC1741  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  RSA794969  Cordylanthus pilosus subsp. hansenii L. Ahart 2010-9-12 17150 Butte Just above the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CHSC51014  Cordylanthus pilosus var. tenuis Lowell Ahart 1990-8-15 6589 Butte On the east side of the Enterprise Boat Launch Area Parking area, about 1/2 miles north-west of the Enterprise Bridge across Lake Oroville. 335 Comment
  CHSC11947  Cornus sericea subsp. sericea E. B. Copeland 1930-6-25 431 Butte Jonesville. Along creek. 1500 Comment
  SD7620  Cornus sessilis Mrs. R. M. Austin 1883-1 Butte Comment
  UCD169427  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte About 4 miles (air) northeast of Cohasset, on Cohasset Ridge, a gated road goes southeast, on the east side of the dirt road (Ponderosa Way), south of an intersection. 1113 Comment
  CDA1914  Cortaderia selloana L. Ahart 2000-9-2 8678 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  CAS-BOT-BC401856  Corydalis caseana subsp. caseana Lowell Ahart 1987-10-17 5916 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow 1676 Comment
  SEINET10478568  Corylus cornuta var. californica Mary Susan Taylor 1978-7-21 Taylor 1797 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CHSC82274  Cotoneaster lacteus M. MacArthur 1968-6-16 332 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  RSA769676  Cotula australis L. Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  CHSC102898  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CHSC112911  Crassula aquatica B. Castro; Robin Carter 2011-4-29 1870 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC103949  Crassula connata Lowell Ahart 2010-4-30 16598 Butte Notth side of disk gold area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 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
  CAS-BOT-BC427666  Crassula connata Lowell Ahart 1974-4-11 s.n. Butte Honcut 45 Comment
  CHSC26720  Crassula tillaea Hayes; Taylor 1978-4-14 151 Butte On the east side of Williams road, approx. 1/4 mi n of Pentz road on the Butte College Campus. 65 Comment
  SEINET10973378  Crassula tillaea Mary Susan Taylor 1978-4-14 Taylor 1554 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
  CAS-BOT-BC290324  Crepis L. W. Swift 1934-5-8 105 Butte Plumas National Forest. S Challenge 914 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  CHSC61043  Cressa truxillensis Vernon H. Oswald 1993-7-29 5737 Butte Gray Lodge Wildlife Management Area W of Gridley, 0.3 mi S of Rutherford Rd. on the first levee road E of the headquarters complex. 19 Comment
  CHSC37393  Croton setiger R. A. Schlising 1980-8-31 3980 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. Throughout area. Comment
  SEINET11688336  Crypsis schoenoides Unknown 1984-1 4788 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  JEPS82391  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte near Chico; Blavo Comment
  CHSC86138  Cryptantha affinis John Dittes; Josephine Guardino 2002-6-21 617 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  UC179680  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  CHSC33419  Cryptantha flaccida R. A. Schlising; J. D. Jokerst 1980-7-2 3820 Butte 1.4 mi S of junction of Nimshew and Centerville Roads at Nimshew, along Centerville Road. Comment
  SEINET10969139  Cryptantha flaccida Lowell Ahart 1984-5-18 Ahart 4607 Butte T17N R4E. Peter Ahart Ranch, ca. 1.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC33418  Cryptantha intermedia R. A. Schlising; J. D. Jokerst 1980-7-2 3821 Butte 1.4 miles S of Nimshew junction of the Centerville and Nimshew Roads. Along Centerville Road. Comment
  JEPS30754  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte at Magalia, South Branch of the Feather River, Sierra Nevada foothills Sierra Nevada, Feather River, Magalia 487 Comment
  CHSC33415  Cryptantha torreyana R. A. Schlising 1980-7-16 3915 Butte Streamside, Butte Creek, several miles NE of Butte Meadows and adjacent to large meadow W of Cherry Hill Campground. Comment
  UCD120094  Cryptantha torreyana E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  CHSC61018  Cupressus arizonica subsp. arizonica Vernon H. Oswald 1993-7-29 5732 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC85568  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte South of road to Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CHSC61019  Cupressus macrocarpa Vernon H. Oswald 1993-7-29 5733 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC224423  Cuscuta californica Lowell Ahart 1983-9-19 4455 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  UC1562360  Cuscuta californica Vernon Oswald and Lowell Ahart 1990-7-5 4348 Butte n side Humboldt Rd (just w of Scout Rd); Butte Meadows 1325 Comment
  UCD126312  Cuscuta indecora var. indecora A. A. Heller 1914-8-11 11677 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  JEPS106131  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City 1417 Comment
  UC105506  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 370 Butte Comment
  CHSC11876  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  CHSC61342  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CDA38929  Cyperus difformis L. Ahart 2002-9-7 9930 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC34135  Cyperus difformis L. Ahart 1981-9-19 3187 Butte Small pond ca. 100 m n of Cresta Powerhouse, a little e of Feather River, along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC76850  Cyperus difformis L. P. Janeway 1999-6-26 6487 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  RSA739808  Cyperus difformis John Dittes 2003-10-8 849 Butte Butte County; undesignated section of Arroyo Chico Land Grant, Ord Ferry 7.5, Quad, Northern Sacramento Valley, 6 air miles W by SW of Chico, 2.3 air miles S of Hwy 32, E bank of Sacramento River, bidwell sacramento river State Park. 38 Comment
  UC1100549  Cyperus difformis Herbert L. Mason and Verne Grant 1946-8-14 13024 Butte canal near big pond on Sacramento Outing Club; Butte Sink Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CHSC4293  Cyperus eragrostis M. M. Gregg 1966-5-27 182 Butte CSC Campus: in lawn, across from the Dick Lewis Memorial Barbecue Pit. Which is found behind the dining hall. Chico. Comment
  CHSC76299  Cyperus eragrostis Lowell Ahart 1999-9-21 8272 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC114599  Cyperus eragrostis L. P. Janeway 1986-10-19 1937 Butte N side Durham-Pentz Rd, on Butte College agricultural land. 82 Comment
  POM185581  Cyperus eragrostis E. B. Copeland 1903-7-27 3490 Butte Chico. Comment
  UCD141068  Cyperus eragrostis L. P. Janeway 1987-5-20 2087 Butte seep along Highway 70, 0.3 mile north of Arch Rock Tunnel. N fork Feather River. Granitics. 472 Comment
  UCD141069  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte along Durham-Pentz Road 0.7 mile east of Clark Road. 118 Comment
  CHSC97763  Cyperus erythrorhizos Lowell Ahart 2007-11-3 14555 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
  CHSC45145  Cyperus flavescens Lowell Ahart 1975-8-21 957 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC76424  Cyperus flavescens Lowell Ahart 1999-10-28 8303 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC78486  Cyperus flavescens Lowell Ahart 2000-8-23 8664 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
  RSA724967  Cyperus flavescens L. Ahart 2006-10-8 13429 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Hwy 70, about 0.5 mile north of the Cresta Power House. 610 Comment
  CHSC68397  Cyperus niger L. P. Janeway 1986-10-19 1936 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  UCD141201  Cyperus niger Herbert L. Mason; Verne Grant 1946-9-27 13141 Butte three miles west of Biggs. Comment
  CHSC68406  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1839 Butte Within the City of Chico; on the CSU, Chico Campus. At edge of lawn at northeast corner of Plumas Hall. 59 Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  SEINET7582970 Image available Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CHSC102739  Cyperus strigosus Lowell Ahart 2009-8-3 16256 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  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
  CHSC27962  Cystopteris fragilis M. S. Taylor 1978-7-18 1705 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte Co and Tehama Co Line. 2158 Comment
  CHSC28494  Cystopteris fragilis M. S. Taylor; J. D. Jokerst 1979-7-21 2149 Butte On Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC28891  Cystopteris fragilis M. S. Taylor 1980-2-17 2365 Butte Ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SD9857  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, by Butte Creek 1550 Comment
  SD81976  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte Jonesville 1800 Comment
  UCSB63846  Cystopteris fragilis Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC110336  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. 632 Comment
  CHSC10540  Damasonium californicum Lowell Ahart 1968-4-6 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC2050  Damasonium californicum 1947-5-27 Butte Dayton road near Chico. 67 Comment
  CHSC44174  Danthonia intermedia V. Oswald; L. Ahart 1988-7-26 3615 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC101154  Darmera peltata Lowell Ahart 2009-5-15 15714 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC51278  Datura stramonium var. stramonium Lowell Ahart 1990-9-30 6611 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC31858  Datura wrightii L. Ahart 1975-7-7 855 Butte Near home near a building; Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10454791  Daucus carota Mary Susan Taylor 1982-8-16 Taylor 4986 Butte T23N R3E sw/sw sec 30. Paradise E quad. In Mixed Evergreen Forest; on edge of serpentine outcrop, just s of old RR Xing over Coutelenc Rd, at the Skyway, Magalia. 2400 ft. Comment
  CHSC81213  Daucus pusillus J. Trizzino 2001-4-29 63 Butte End of Potter Road north of Skyway before Honey Run, at meeting with seasonal creek, nearly dry at this time. 80 Comment
  CAS-BOT-BC8793  Delphinium gracilentum Lowell Ahart 1980-4-30 2127 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC8565  Delphinium hansenii E. B. Copeland 1899-5-28 s.n. Butte Marysville Comment
  CAS-BOT-BC8574  Delphinium hansenii Isabel McCracken 1938-5-21 s.n. Butte Marysville Buttes, east side Comment
  CHSC1446  Delphinium hesperium H. Holder 1949-5-18 Butte Bidwell Park. 91 Comment
  CAS-BOT-BC10303  Delphinium hesperium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC50336  Delphinium hesperium subsp. hesperium Vernon Oswald 1990-6-1 4274 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CHSC56873  Delphinium nudicaule P. D. Nelson 1979-3-17 Butte Ca 150 ft s of Bidwell Park Road at Salmon Hole, ca 9 mi e of California State University, Chico. And ca 30 ft n of Big Chico Creek. 152 Comment
  SEINET12099564  Delphinium nudicaule Unknown n d s.n. Butte Chico Comment
  CHSC51902  Delphinium patens subsp. patens B. M. Bounous 1987-4-1 11 Butte N end of Table Mtn, ca 6 mi N of Oroville, ca 100 yds W of Cherokee-Table Mtn Rd. 335 Comment
  CHSC52505  Delphinium variegatum Judy A. LeFurgey 1978-4-15 26 Butte Ca. 6 mi ne of Chico s side of field by Horseshoe Lake, ca. 0.2 mi n of Chico Mun. Golf Course Clubhouse. 60 Comment
  CHSC52508  Delphinium variegatum Patricia Collins 1981-4-22 11 Butte Field near the bank of Singer Creek, ca. 21 km nw of Chico. Intersection of Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  CHSC59343  Delphinium variegatum Thomas J. Van Wagner 1992-4-9 9 Butte W side of Calif. State Highway 70, 4.5 km s of Calif. State Highway 162, Oroville. 30 Comment
  POM150574  Delphinium variegatum E. B. Copeland 1903-5-2 3251 Butte Chico Comment
  RSA400056  Delphinium variegatum M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  SEINET10536090  Delphinium variegatum f. superbum Mary Susan Taylor 1976-3-9 Taylor 1023 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CAS-BOT-BC192654  Deschampsia danthonioides Lowell Ahart 1983-5-12 3977 Butte About 0.5 mi. NE of Highway 99 and Pentz Road 65 Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  CHSC112523  Deschampsia elongata B. Castro 2012-10-18 1990 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CHSC39497  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC41307  Deschampsia elongata S. C. Morey 1983-7-22 543 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA126936  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  SEINET10508567  Deschampsia elongata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4184 Butte T26N R4E se 1/4 se 1/4 sec. 35. Jonesville SW quad. In and along West Branch Feather River, 3.4 mi SW of Snag Lake, ca. 11 mi NE of Stirling City. 5300 ft. 1615 Comment
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC638  Dicentra formosa P. Delaplane 1965-5-11 73 Butte Found ca 20 ft. from E side of rd. 2mi. E of Magalia off Skyway, N of Paradise Reservoir. 609 Comment
  UC1362265  Dicentra formosa Kingsley R. Stern 1964-5-15 2070 Butte ca 1.7 mi n Magalia (vicinity of Magalia Reservoir, just off Skyway road) Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CHSC19653  Dicentra formosa subsp. oregana K. R. Stern 1966-4-1 Butte Chico. Comment
  RSA88110  Dichanthelium acuminatum var. fasciculatum J. T. Howell 1951-8-19 28157 Butte 2 miles west of Pulga 366 Comment
  CHSC82601  Dichelostemma capitatum subsp. capitatum Tara Morgan 2002-4-23 26 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail to the left split. 395 Comment
  UCD148233  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2013-3-16 2894 Butte Table Mtn, ca. 0.2 mi SE of where Cherokee Rd leaves oak woodland and emerges onto the mesa. 364 Comment
  UCD139200  Dichelostemma capitatum subsp. capitatum L. Ahart 1977-3-28 1229 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CAS-BOT-BC501077  Dichelostemma multiflorum Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CAS-BOT-BC501093  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  HSC32643  Dichelostemma multiflorum Gary S. Lester 1974-4-20 97 Butte 1 mi. E of Hwy. 99, Skyway Blvd. 61 Comment
  SEINET10932619  Dichelostemma multiflorum A. Arthur Heller 1914-5-19 Heller 11421 Butte Hills 8 miles north of Oroville Comment
  CHSC44640  Dichelostemma volubile Cathy Young 1988-4-24 15 Butte Ca 5.5 mi ne of Chico and 30 yds se of Highway 32. 256 Comment
  SEINET232463  Dichelostemma volubile Margaret J. Williams, Wayne Roderick 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road. 168 Comment
  SEINET10496684  Dichondra donelliana Mary Susan Taylor 1980-5-24 Taylor 2739 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC209032  Digitaria sanguinalis John Thomas Howell 1975-6-15 51058 Butte Chico 60 Comment
  RSA29936  Digitaria sanguinalis I. L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET10560034  Digitaria sanguinalis Lowell Ahart 1982-8-22 Ahart 3745 Butte On damp sandy soil along edge of North Honcut Creek, Peter Ahart Ranch, 3 mi ne of Honcut. Foothill Woodland. 50 Comment
  CAS-BOT-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC38703  Diplacus kelloggii Vernon Oswald 1983-3-13 156 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. and ca. 2.4 mi e of the power lines. 243 Comment
  CHSC63666  Diplacus layneae B. Castro; R. Zebell 1989-4-8 315 Butte Ca 3 mi S of Brush Creek, ca 0.3 mi E of Bald Rock Rd in decomposed granite, along New Bean Creek Rd ca 0.3 mi N of Little Bald Rock. 1005 Comment
  SBBG26853  Diplacus layneae L. Constance 1941-5-28 2828 Butte south branch of the Feather River at Magalia 487 Comment
  CHSC29393  Diplacus torreyi R. A. Schlising; S. Azevedo 1980-6-13 3698 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Roads). 902 Comment
  SD111941  Diplacus tricolor Barbara Ertter, J. Strachan, L. Ahart 1980-5-8 3312 Butte Pater Ahart Ranch ca 2-1/2 mi NNE of Honcut between Marysville and Oroville, oatfield 29 Comment
  CHSC38811  Distichlis spicata Vernon Oswald 1983-6-2 612 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the flood plain of the creek. 207 Comment
  CDA35058  Dittrichia graveolens L. P. Janeway 2010-11-17 10220 Butte Sacramento Valley; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) Comment
  CHSC100483  Dittrichia graveolens Lowell 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. 60 Comment
  CHSC11799  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville. In grassy swamp. 1550 Comment
  CHSC92570  Dodecatheon clevelandii subsp. patulum L. P. Janeway 2005-3-1 8338 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  CHSC67290  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1954 Butte Peter Ahart Ranch on bluff top of the North Fork Honcut Creek. Growing within 0.2-0.3 mi of #1952 and 1953. Comment
  POM59016  Downingia bicornuta E. B. Copeland 1903-5-30 3283 Butte Chico. Comment
  CHSC117463  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2016-5-25 2132 Butte Sacramento Valley. Ca 1.1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.7mi S of Nelson Ave and 0.1 mi S of the Afterbay perimeter road, along sinuous edge of swale darining from the NE into 'McKibben's Pond. 42 Comment
  UC52284  Downingia bicornuta var. bicornuta Mrs. R. W. Summers Butte Comment
  CHSC112927  Downingia cuspidata B. Castro; Tom Boullion 2011-4-21 1846 Butte Sacramento Valley. N side of Thermalito Forebay/Power calanl, ca 0.3 mi W of Hwy 70 and ca 0.2 mi S of Garden Drive, at S end of picnic/boat ramp recreation area, on northside of Oroville. 71 Comment
  SEINET10458519  Downingia pulchella Mary Susan Taylor 1974-4-24 Taylor 186 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC114945  Draba verna var. aestivalis Lowell Ahart 2015-3-14 19945 Butte Along the poor old dirt road, about 400 yards north of Cherokee Road, about 7 miles (air) north of Oroville. Foothill Woodland. 352 Comment
  CHSC39617  Draba verna var. aestivalis Lowell Ahart 1983-4-1 3914 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  RSA304016  Draperia systyla Jim R. Shevock 1972-5-19 1780 Butte Hwy 70, Feather River Canyon. 610 Comment
  CHSC28723  Drosera rotundifolia M. Banchero; R. Schlising 1979-9-2 36 Butte Wet meadow sloping to Butte Creek, 8.1 mi NE jct H ... Field redacted by CHSC, contact the data manager for more information Comment
  JEPS110326  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 1569 Comment
  UC600381  Drymocallis lactea H. F. Copeland 1932-8-19 Butte Jonesville Jonesville (at the Lily Pond) 1700 Comment
  CAS-BOT-BC157792  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC3410  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  CHSC84156  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  CHSC3880  Duchesnea indica Gary Dutton 1966-3-23 141 Butte North of Science Bld. along Chico Creek. CSC. Comment
  UC115213  Dudleya cymosa Mrs. R. M. Austin May 1896 123 Butte Iron Canyon Comment
  CAS-BOT-BC428077  Dudleya cymosa subsp. cymosa Lowell Ahart 1980-5-25 2319 Butte Along Swedes Flat Road, near Bangor. Comment
  CHSC81778  Dysphania ambrosioides Lowell Ahart 2001-10-10 9413 Butte On the north side of Gridley Road, about 100 yards southeast of the bridge across the Feather River, about 3 1/2 miles (air) east of Gridley. 27 Comment
  SEINET4174012  Dysphania ambrosioides R. McKee 1918-9-27 s.n. Butte Chico Comment
  JEPS124155  Dysphania botrys Lowell Ahart 2015-11-7 20617 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC46358  Dysphania pumilio Lowell Ahart 1989-5-29 6315 Butte Near the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 792 Comment
  CHSC38812  Echinochloa colona Vernon Oswald 1983-8-27 1032 Butte Upper Bidwell Park, Chico, ca. 200 ft s of Upper Park Rd. and 1200 ft e of the parking lot at Salmon Hole. 182 Comment
  CAS-BOT-BC197093  Echinochloa crus-galli Forman T. McLean 1921-9-25 17 Butte Chico Comment
  CAS-BOT-BC197095  Echinochloa crus-galli Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CAS-BOT-BC197098  Echinochloa crus-galli John Thomas Howell 1951-6-26 27519 Butte Big Bend Mt. 609 Comment
  CHSC42908  Echinochloa crus-galli Lowell Ahart 1987-7-3 5757 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10831129  Echinochloa crus-galli Lowell Ahart 1977-8-14 Ahart 1554 Butte On damp soil in a small slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  CAS-BOT-BC197251  Echinochloa muricata Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET245846 Image available Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte 5 miles N.W. of Biggs Comment
  CDA2001  Echinochloa oryzoides E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 853 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 miles 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. Comment
  SEINET239848 Image available Echinochloa oryzoides E. Dean, J. Ditomaso; E. Healy 2001-8-20 853 Butte Biggs UC Field Station 30 Comment
  CHSC76295  Echinodorus berteroi Lowell Ahart 1999-9-21 8275 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
  JEPS104101  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the n side of Highway 149, ca 1/4 mi w of Highway 70, ca 5 1/2 mi (air) nw of Oroville. 71 Comment
  CHSC111507  Elatine Lowell Ahart 2014-4-17 19380 Butte On dry gray clay soil, bottom of a rice field, about 20 yards north of Hailton Road, about 1/2 mile east of Riceton Highway, about 2 1/2 miles (air) noth of Biggs. Agricultural. 30 Comment
  CHSC42128  Elatine ambigua Lowell Ahart 1978-5-12 1716 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC46021  Elatine chilensis Lowell Ahart 1974-5-1 448 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC45276  Elatine heterandra Vernon Oswald 1988-4-5 3269 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC42129  Elatine rubella Lowell Ahart 1984-5-8 4596 Butte About 2-1/2 mies north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC45130  Eleocharis acicularis Vernon Oswald 1987-8-10 3199 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  SEINET13709912  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8699 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi SW Chico Comment
  UCD49578  Eleocharis atropurpurea John M. Tucker 1953-8-28 2678 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC88221  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  CHSC78925  Eleocharis engelmannii Lowell Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  CHSC96902  Eleocharis engelmannii Lowell Ahart 2006-7-27 14395 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CAS-BOT-BC113375  Eleocharis engelmannii Lowell Ahart 1986-11-9 5448 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Road, 36 Comment
  CHSC29283  Eleocharis macrostachya R. A. Schlising 1980-4-2 3538 Butte Richvale vernal pools. S of junction of Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. 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
  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
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. 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
  CHSC68445  Eleocharis montevidensis L. P. Janeway 1988-5-29 2705 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  SEINET11749733  Eleocharis ovata Unknown 1983-1 4027 Butte Peter Ahart Ranch, 2.5 mi NE of Honcut 50 Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  HSC97772  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte N margin of large wash 200 yds. E of road crossing, Peter Ahart Ranch, 1.5 mi. N and 1.25 mi. E of Honcut, 12 mi. SE of Oroville 37 Comment
  CHSC78928  Eleocharis radicans Lowell Ahart 2000-10-2 8700 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
  SEINET9084534  Eleocharis radicans L. Ahart 2000-9-4 8686 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  CHSC21241  Eleocharis rostellata M. S. Taylor 1975-7-10 837 Butte Ca. 20 ft n of Big Chico Creek, ca. 5 mi e of Golf Course, Upper Bidwell Park, Chico. 121 Comment
  CHSC46880  Eleocharis suksdorfiana Vernon Oswald 1989-8-29 3971 Butte Boy Scout Camp at Chico Meadows, ca. 1 mi n of Butte Meadows. Bogs on the sloping meadow bordering Big Chico Creek near the impounded 'swimming hole. 1280 Comment
  CHSC68449  Eleocharis suksdorfiana L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2499 Butte Coon Hollow, 1.0 mi southeast of the Humbug Summit Road. Meadows on north side of the creek. 1661 Comment
  UCD61403  Elymus elymoides E. B. Copeland 1929-7-24 Butte Jonesville. 1575 Comment
  CHSC61551  Elymus elymoides subsp. californicus Lowell Ahart 1993-6-20 7005 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC31719  Elymus glaucus L. Ahart 1977-6-16 1420 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC6725  Elymus glaucus B. Anthony 1968-5-26 549 Butte Salmon Hole, Bidwell Park, Chico. Comment
  UC600746  Elymus glaucus E. B. Copeland July, 1929 Butte Jones Creek Jonesville 1500 Comment
  UCD61801  Elymus glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows. 1219 Comment
  UCD61886  Elymus glaucus L. E. Hazeltine 1916-7-13 Butte Chico. Comment
  UCR143543  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CHSC103162  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 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
  CHSC110479  Elymus multisetus P. Reisentz 1979-5-13 Butte Along roadside on State Highway 70, 9 miles south of Butte-Plumas County line. Comment
  UCD62442  Elymus multisetus John Thomas Howell 1962-6-15 37528 Butte Magalia. 731 Comment
  UCD62455  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  CHSC31936  Elymus sierrae J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1033 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of county. 1828 Comment
  CHSC59033  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  CAS-BOT-BC410230  Enemion occidentale Lowell Ahart 1980-3-26 2053 Butte Unspecified. Comment
  SEINET10453214  Epilobium adenocaulon var. holosericeum Mary Susan Taylor 1975-10-4 Taylor 954 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  UCR188571  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC105262  Epilobium campestre Lowell Ahart 2010-6-20 16826 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC117412  Epilobium campestre B. Castro 2008-7-15 1757 Butte Sacramento Valley. 0.4 mi W of Hwy 99 and 2.5 mi E of Richvale, ca 300 ft S of Richvale Hwy. 34 Comment
  CHSC13471  Epilobium canum subsp. latifolium J. R. Birmingham 1972-4-5 7 Butte Against cliff, ca. 1000 yds. se of Municipal Golf Building, Chico. 182 Comment
  SEINET10453052  Epilobium canum subsp. latifolium Mary Susan Taylor 1979-10-13 Taylor 2249 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  POM183926  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-08 s.n. Butte Jonesville, in woods along Butte Creek 1500 Comment
  CHSC21136  Epilobium densiflorum M. S. Taylor 1975-6-30 817 Butte In ditches, ca. 500 yds e of Cohasset Hwy, ca. 500 yds ne of Greenwood Store, Cohasset. 853 Comment
  CHSC48618  Epilobium densiflorum Vernon Oswald 1985-5-28 1788 Butte Oroville-Quincy Hwy 1.1 mi n of Simmons Rd. 312 Comment
  CHSC70335  Epilobium glaberrimum R. A. Schlising 1982-8-31 4378 Butte N and E of Butte Meadows, off of Humboldt Road and N of Butte Creek near Cherry Hill Campground. Meadow; side of Butte Creek. 1524 Comment
  CHSC70338  Epilobium glaberrimum R. A. Schlising 1980-7-31 3943 Butte 1.1 mi S of Inskip along Skyway. Roadside. Comment
  CHSC46573  Epilobium glaberrimum subsp. glaberrimum Vernon Oswald 1983-7-19 873 Butte Doon Campground, ca. 1 mi e of Lovelock on the Skyway n-e of Paradise. Along the railroad. 822 Comment
  CHSC27617  Epilobium minutum Robert A. Schlising; Coleta Lawler 1978-5-27 3276 Butte Magalia; serpentine outcrop just S of Magalia Res. and west of S.T. RR and Coutelenc Road. Comment
  CHSC48632  Epilobium minutum Vernon Oswald 1987-6-2 2943 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  CHSC70339  Epilobium minutum R. A. Schlising 1980-6-14 3709 Butte NE of Oroville at Little Bald Rock. 1051 Comment
  CHSC70340  Epilobium minutum R. A. Schlising 1980-6-23 3771 Butte SE part of county; 1.2 mi S of S end Sly Creek Reservoir Dam, at Strawberry Valley Creek (=2.2 mi N of La Porte Road). Roadside. 1059 Comment
  JEPS108857  Epilobium minutum Lowell Ahart 2006-5-10 12623 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 385 Comment
  HSC66347  Epilobium obcordatum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3201 Butte Humboldt Peak, on W and N side along trail 2155 Comment
  SEINET10453021  Epilobium obcordatum Mary Susan Taylor 1979-7-21 Taylor 2149 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  UC726202  Epilobium pallidum A. A. Heller 1941-5-24 16148 Butte Clark Rd 2 mi below Paradise Comment
  RSA695398  Epilobium pygmaeum L. Ahart 2003-6-23 10313 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC109633  Epilobium torreyi Lowell Ahart 2012-6-5 18157 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,d North Table Mountain, about 6 miles (air) north of Oroville. 298 Comment
  CHSC113442  Epilobium torreyi Lowell Ahart 2014-7-10 19621 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UCD80484  Epilobium torreyi CNPS SN Foothill Team 2005-5-3 SNFN 0197 b Butte City of Chico, Doe Mill Meadowfoam Preserve, located ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  POM107600  Epipactis gigantea C. C. Bruce 1897-05 1871 Butte Big Chico. Comment
  CAS-BOT-BC57992  Equisetum arvense John Thomas Howell 1961-9-22 36717 Butte Bank of Feather River, Oroville. 53 Comment
  SD10029  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville 1500 Comment
  SEINET1783079  Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville. 1500 Comment
  UC426895 Image available Equisetum fontinale E. B. Copeland 1930-6-24 Butte sloping s toward Butte Creek 1510 Comment
  CHSC116290  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC25445  Equisetum hyemale subsp. affine Marc Hayes; Warner 1977-9-11 80 Butte At a fork in the Butte Meadows Road (Humboldt Rd.) below Jonesville, exactly 9.0 miles from the junction with Hwy 32. 1219 Comment
  RSA331946  Equisetum hyemale var. affine Dave Kelly, Walter Wisura 1985-8-1 4089 Butte 8.1 mi NE of Lomo (Hwy 32) along Humboldt Road to Jonesville. Comment
  CHSC24939  Equisetum telmateia subsp. braunii W. A. Vaccaro 1976-4-17 2 Butte Population ca. 2.5 mi e of Centerville, 200 yds s of Humbug Road. 128 Comment
  CHSC33114  Equisetum telmateia subsp. braunii M. S. Taylor 1981-5-15 3740 Butte Both sides of 22N92 between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 929 Comment
  CHSC69738  Eragrostis mexicana subsp. virescens Lowell Ahart 1997-10-24 7939 Butte About 20 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC49243  Eragrostis pectinacea var. pectinacea Vernon Oswald 1987-5-26 2933 Butte Bancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CDA34179  Eragrostis pilosa L. Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 0.5 miles (air) southwest of Oroville. Comment
  CHSC45106  Eragrostis pilosa var. pilosa Lowell Ahart 1988-8-10 6169 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  SEINET10537447  Eremogone cliftonii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4246 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  UC1609001  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  UC426988  Ericameria bloomeri E. B. Copeland 1930-8-26 493 Butte Jonesville 1550 Comment
  UC600729  Ericameria bloomeri H. F. Copeland 1920-8-25 383 Butte Jonesville Comment
  CHSC113979  Erigeron canadensis Lowell Ahart 2014-11-17 19910 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CHSC58252  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte Along Oregon Gulch, Lake Oroville Recreation Area, about 1 1/4 miles west of Oroville Dam. 91 Comment
  UC600738  Erigeron glacialis var. glacialis H. F. Copeland 1932-8-22 Butte spring on ridge se of the head of Butte Creek; Jonesville 2100 Comment
  UC127750  Erigeron inornatus var. inornatus Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  CHSC100467  Eriobotrya japonica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15419 Butte On the west side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC3202  Eriodictyon californicum Gerry Carrauthers 1966-4-23 126 Butte 9 mi. from city of Chico (east) on Highway 32. Near roadside. Comment
  UC1124301  Eriodictyon californicum C. G. Albertus 1933-6-6 13 Butte 1/2 mi nw Nelson's Bar; Chico Quadrangle Comment
  CHSC45365  Eriogonum lobbii Vernon Oswald 1985-5-28 1784 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. Growing in sandy soil on an open granitic outcrop. 1011 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
  CHSC45368  Eriogonum marifolium var. marifolium Vernon Oswald 1983-8-17 999 Butte Pacific Crest Trail ca. 3000 ft e of Humboldt Summit. Growing on an open, rocky, brush-covered flat. 2011 Comment
  POM306151  Eriogonum nudum var. oblongifolium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CHSC45488  Eriogonum roseum Lowell Ahart 1974-9-30 640 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC45489  Eriogonum roseum Lowell Ahart 1977-10-19 1603 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC95160  Eriogonum roseum R. D. Fischer 2005-9-14 857 Butte Northern Sacramento Valley, Chico. Plants collected at the end of Arbutus Street along the western bank of Lindo Channel. 60 Comment
  CHSC112071  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; 'Magalia Serpentine' (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  CHSC25328  Eriogonum umbellatum var. ahartii M. P. Hayes 1977-3-20 2 Butte Ca. .9 km sw of Pulga, 100 m n of North Fork of Feather River, along Pulga Rd., 50 m from juncture with Hwy. 70. Below outcrop adjacent to road. 490 Comment
  CHSC46787  Eriogonum umbellatum var. ahartii R. A. Schlising 1980-7-7 3857 Butte E part of county, NE of village of Feather Falls at Lumpkin Ridge. 1280 Comment
  CHSC69687  Eriogonum umbellatum var. ahartii Vernon Oswald 1985-6-26 1867 Butte Forbestown Reservoir Rd. 0.2 mi w of Oroleve Creek. 617 Comment
  JEPS117896  Eriogonum umbellatum var. ahartii L. P. Janeway 2008-5-26 9374 Butte Ridge top at head of Rattlesnake Creek (short tributary to West Branch Feather River) about 2.9 air km east of Magalia and 0.8 air km east of Sawmill Peak Northern High Sierra Nevada 951 Comment
  CAS-BOT-BC262214  Eriogonum ursinum Lowell Ahart 1981-8-1 3017 Butte Near the top of Humboldt Peak 2157 Comment
  CHSC44046  Eriogonum ursinum var. ursinum L. P. Janeway 1987-6-13 2197 Butte Along Ponderosa Way (Rim Rd) 3.8 NE of Jarbo Gap. East-facing roadcut. 883 Comment
  JEPS106049  Eriogonum vimineum Lowell Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  UCR190825  Eriophyllum lanatum 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
  CHSC33787  Eriophyllum lanatum var. croceum M. S. Taylor; L. Hanson 1981-4-10 3520 Butte On e side of logging spur rd, ca. 0.5 mi n of its jct with Concow Rd, ca. 6 mi n of Jarbo Gap on Hwy 70. 731 Comment
  CHSC99548  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2008-6-15 9414 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  CHSC100985  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  UC600712  Erysimum capitatum H. F. Copeland 1931-6-10 1527 Butte woods between Willow Creek and Colby Creek; Jonesville 1524 Comment
  CHSC61503  Erythranthe floribunda Lowell Ahart 1993-5-10 6934 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC22330  Erythranthe glaucescens Robert A. Schlising 1963-5-4 2564 Butte Sierra Nevada. South of Cohasset, 5.2 miles north of Jct. Cohasset Hwy and Kiefer Road, along Cohasset Hwy. 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
  CHSC85410  Erythranthe glaucescens John Dittes; Josephine Guardino 1992-5-7 480 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; south-facing slope, north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  OBI9414  Erythranthe glaucescens Robert F. Hoover 1968-5-29 137 Butte Cohasset Rd. Comment
  SD4699  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville, in a cold stream 1500 Comment
  CAS-BOT-BC153576  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville 1550 Comment
  CHSC44787  Erythranthe nasuta R. Banchero 1980-3-27 84 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  CHSC2263  Erythronium multiscapideum A. Riker 1897-5-1 Butte Comment
  JEPS18173  Erythronium multiscapideum Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5601 Butte 0.5 mi n Magalia 731 Comment
  CAS-BOT-BC504526  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte About 4 miles from Magalia on the Coutlenc road. Comment
  HSC23466  Erythronium multiscapideum J. L. Wilson 1970-2-27 207 Butte Canyon side NE of Paradise, 0.65 mi. E of intersection of the steep gravel rd. and Coutolenc Rd. on the gravel rd., intersection 0.15 mi. NE of intersection of Coutolenc Rd. and skyway 579 Comment
  SEINET10933161  Erythronium multiscapideum BOS 1978-3-28 BOS 5 Butte Along Oakway Rd., 5 miles ene of Magalia, e of Feather River. Foothill woodland. Serpentine soil. Comment
  CHSC43796  Erythronium purpurascens Vernon Oswald 1984-7-12 1575 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  CHSC99545  Erythronium purpurascens L. P. Janeway 2008-6-15 9418 Butte Northern High Sierra Nevada. Along Concow Road 1.1 road km southwest of Philbrook Road; north-facing slopes above the east end of Philbrook Reservoir. 1729 Comment
  CHSC37283  Eschscholzia californica M. S. Taylor 1982-5-2 4388 Butte Pulga serpentine oucrops on n side of Hwy 70 at Pulga bridge, ca 20 mi ne of Oroville. 487 Comment
  CAS-BOT-BC402964  Eschscholzia californica Mrs. C. C. Bruce 1893-3-1 2020 Butte Unspecified Comment
  POM125703  Eschscholzia californica var. crocea C. C. Bruce 1897-05 2022 Butte Near Chico. Comment
  CHSC103728  Eschscholzia lobbii Lowell Ahart 2010-5-16 16702 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC23471  Eschscholzia lobbii J. R. Lee 1974-4-22 3 Butte 10 yds s of road on the Skyway ca. 6 mi from Chico city limits. 152 Comment
  RSA715717  Eschscholzia lobbii L. P. Janeway 2005-3-1 8331 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  UC176651  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte near Big Chico Creek (e of Chico) Comment
  CAS-BOT-BC419500  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  CHSC48615  Eucalyptus camaldulensis Vernon Oswald 1987-6-8 2961 Butte Butte Creek Reserve on the nw side of the creek near the Little Chico-Butte Creek Diversion Channel, ne of Hwy 99. 68 Comment
  CAS-BOT-BC312030  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte Summit above Jonesville Comment
  SEINET10493553  Euphorbia Mary Susan Taylor 1979-7-21 Taylor 2156 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC613  Euphorbia lathyris K. Stern 1963-8-8 Butte Near Chico in an orchard. Comment
  JEPS119517  Euphorbia maculata Lowell Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  UCD142599  Euphorbia maculata G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13063 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CAS-BOT-BC202420  Euphorbia ocellata Lowell Ahart 1989-5-23 6256 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC49837  Euphorbia spathulata Vernon Oswald 1990-3-24 4139 Butte Nance Canyon on the n side of Neal Rd, ca. 0.7 mi ene of the double power transmission lines, ca. 1.7 mi ne of Butte County Sanitary Landfill. 121 Comment
  SEINET8687816 Image available Eurybia radulina K. Stiles 1907-1 150 Butte Brush Creek Comment
  CDA34255  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte About 20 yards northeast of Parking Lot 12,Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  CHSC109589  Festuca arundinacea Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18117 Butte On the north side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. 76 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
  CHSC118578  Festuca californica Nancy Groshong 2017-4-30 2 Butte Magalia Serpentine. South side of Coutelenc Road east of Skyway. 701 Comment
  CHSC109625  Festuca myuros Lowell Ahart 2012-6-17 18081 Butte On the north side 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
  JEPS122270  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  JEPS106262  Festuca occidentalis Lowell Ahart 2004-7-23 11298 Butte On sides of small stream, ca. 20 yd NW of the dirt road to the West Branch Cpgd, ca. 50 yd SE of the intersection of Humbug Rd and Philbrook Reservoir Rd, ca. 1 3/4 mi (air) W of Philbrook Reservoir Dam, ca. 3 mi (air) SE of Butte Meadows 1586 Comment
  SEINET10559323  Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4704 Butte About 2 mi SE of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest. Western Fescue 700 Comment
  CHSC42909  Foeniculum vulgare Lowell Ahart 1987-7-12 5820 Butte Along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 64 Comment
  CHSC88634  Fragaria virginiana H. Gray 2003-5-6 Butte Plumas National Forest. 792 Comment
  RSA196149  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC62938  Frangula californica subsp. tomentella P. Monnet 1913-3-1 6631 Butte Feather River Canyon. Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  RSA166766  Frasera albicaulis var. nitida H. Dearing, M. Dearing 1938-6-21 2054 Butte 21 miles north of Chico, near Lone Pine Lookout. 1220 Comment
  CAS-BOT-BC223386  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  UC215516  Fraxinus dipetala Helen M. Edwards Jun 1917 Butte De Sabla Comment
  UCD116288  Fremontodendron californicum J. I. Mallory 1967-5-17 286 Butte 1 3/4 miles south-southeast of summit of Bloomer Hill, 10 miles northeast of Oroville. 655 Comment
  CHSC92557  Fritillaria recurva L. P. Janeway 2005-4-25 8366 Butte Northern High Sierra Nevada. Plumas National Forest; ridgetop northern end of Rocky Ridge; just above Rim Road (Ponderosa Way) 200 m east-southeast of junction with Concow Road; head of upper side drainage of Flea Valley Creek. 988 Comment
  CHSC30016  Galium aparine L. Ahart 1980-5-4 2158 Butte South-west of intersection of Nelson Ave and 20th St, in Thermalito. 65 Comment
  JEPS115294  Galium aparine Lowell Ahart 2009-4-17 15548 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
  RSA127595  Galium aparine Peter H. Raven 1953-5-9 5431 Butte 8 miles from Bangor on Oroville Rd. Comment
  CHSC113436  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. 1449 Comment
  JEPS121970  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  POM196048  Galium bolanderi H. F. Copeland 1928-8-18 1135 Butte Neighborhood of Jonesville. 1524 Comment
  CHSC104015  Galium murale Lowell Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC48883  Galium murale Vernon Oswald 1988-3-4 3248 Butte Harter's Cherokee Ranch located on the W side of Hwy 99 between Hwy 149 and Dry Creek. 71 Comment
  JEPS110243  Galium murale Lowell Ahart 2006-5-8 12598 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  UC888981  Galium parisiense Lewis S. Rose 1937-6-10 37360 Butte Hurleton 579 Comment
  CHSC101837  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 Comment
  CHSC30301  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  UC1523187  Galium porrigens var. tenue M. S. Taylor and D. Hemphill 1981-3-18 3426 Butte s bridge crossing West Branch Feather River (ca 50 ft w of river, ca 1 mi ne of Magalia); Paradise SE Quad 487 Comment
  SEINET10500740  Galium porrigens var. tenue Mary Susan Taylor 1981-3-16 Taylor 3406 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC93072  Galium triflorum L. P. Janeway 1994-7-5 4680 Butte Northern High Sierra Nevada. Northeast side near top of ridge 0.7 mi east-southeast of Flea Mountain; 0.3 mi east-southeast of Campbell Meadow. On road cutbank and above. 1158 Comment
  CHSC116709  Gamochaeta ustulata Lowell Ahart 2016-5-15 20835 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC52399  Garrya fremontii Dena Gracey 1979-3-22 22 Butte Northeast of Chico 10 mi on hwy 32, off Crown Point Rd 5 ft. 548 Comment
  CAS-BOT-BC282601  Gastridium phleoides Lowell Ahart 1988-8-24 6128 Butte At the intersection of Black Bart Road and Forbestown Road about 1 mile west of Robinson Mill Road 731 Comment
  SEINET10935022  Gastridium phleoides Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4063 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC58933  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte East of a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  UC204405  Gayophytum heterozygum A. A. Heller 1914-7-22 11583 Butte Little Summit 1463 Comment
  UCD103714  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Comment
  CHSC3194  Genista monspessulana Dona Kingsford 1966-3-31 Butte 1.2 miles from 4th. Street entrance of Bidwell Park. Comment
  CHSC33760  Gentiana newberryi var. tiogana R. A. Schlising 1981-7-19 4157 Butte E of Stirling City, E of Bald Mountain, and in southern portion of Crane Valley. 1584 Comment
  JEPS114959  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  CHSC36225  Geranium carolinianum L. Ahart 1982-4-21 3290 Butte On n slope, under oaks and near North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC50046  Geranium carolinianum Lowell Ahart 1990-4-8 6433 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC30866  Geranium molle J. D. Jokerst 1979-3-23 1158 Butte Common in the shaded portions of drainage ravines leading off the W edge of Mt. Top of North Table Mt., W edge of mt, immediately N of the waterfalls of the S fork of Coal Cr. 365 Comment
  SEINET12331812  Gilia capitata L. Ahart, Ahart, P. 1984-1 4748 Butte about 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC41375  Gilia capitata subsp. mediomontana R. A. Schlising; S. Morey 1982-8-31 4382 Butte N Butte County, Cherry Hill Meadow, N and E of Butte Meadows off Humboldt Road and N of Butte Creek. At stream edge. 1524 Comment
  UC196265  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CAS-BOT-BC266485  Githopsis diffusa Lowell Ahart 1982-6-15 3574 Butte About 1.5 miles E of Camp 18, about 8 miles E of Feather Falls 1000 Comment
  CHSC34815  Githopsis diffusa subsp. robusta M. S. Taylor 1981-5-21 3768 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC42726  Githopsis diffusa subsp. robusta Lowell Ahart 1987-5-12 5651 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC103958  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-23 16736 Butte On the west side of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  POM74782  Githopsis pulchella subsp. campestris C. C. Bruce 1897-04 1832 Butte [No location data on label] Comment
  CHSC12169  Githopsis specularioides Lowell Ahart 1973-5-6 Butte Swedes Flat Road, near Bangor. 457 Comment
  CHSC46114  Githopsis specularioides L. P. Janeway; Margie McNairn 1989-4-29 3227 Butte Near the old hwy 32, 1 1/4 mi north of Ten Mile House. 536 Comment
  CHSC46355  Githopsis specularioides Lowell Ahart 1989-5-28 6275 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10464588  Githopsis specularioides Mary Susan Taylor, James D. Jokerst 1980-4-18 Taylor 2526 Butte On east side of Humbug road, about 3 miles southwest of Nimshew 518 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
  CHSC61370  Glyceria elata Lowell Ahart 1993-7-22 7090 Butte Along the edge of Fall River, on the west side of the campground road, about 1/4 mile north-west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC1594725  Glyceria elata Lowell Ahart 1992-7-26 6847 Butte about 2 air mi s Snow Mountain (about 0.5 mi n of Carr Mine) 1767 Comment
  UC589870  Glyceria elata P. L. Johannsen 1936-7-17 939 Butte 3 mi sw Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  SEINET10905047  Gnaphalium Mary Susan Taylor 1981-5-6 Taylor 3625 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  RSA770103  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 264 Comment
  CDA6042  Gnaphalium luteoalbum G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4367 Butte Rice Experiment Station, 3 miles north of Biggs on Highway 162. 0 Comment
  CHSC38354  Gnaphalium palustre Vernon Oswald 1983-6-3 620 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  JEPS114999  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  JEPS87529  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  UC202668  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  CHSC25448  Goodyera oblongifolia Hayes; Warner 1977-9-11 75 Butte Ca. 100 m n of road between Jonesville and Butte Meadows, exactly 8.4 mi from the junction of the Butte Meadows road with Hwy 32. 1219 Comment
  CAS-BOT-BC305284  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC4573  Grindelia hirsutula var. davyi C. Glascock 1965-5-18 431 Butte SW corner of Nelson and 4th Ave., Thermalito. Comment
  RSA726431  Grindelia hirsutula var. davyi L. Ahart 2007-11-3 14576 Butte About 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5.5 miles southeast of Paradise. 335 Comment
  RSA754527  Grindelia hirsutula var. davyi L. Ahart 2009-8-3 16263 Butte E side of Big Chico Creek, about 30 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CDA3433  Gypsophila elegans L. Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC31715  Hainardia cylindrica L. Ahart 1974-6-3 464 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC82422  Hedypnois cretica Lowell Ahart 2002-5-7 9644 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
  SEINET10839194  Helenium puberulum Mary Susan Taylor 1979-10-13 Taylor 2255 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. Comment
  CAS-BOT-BC314755  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  CAS-BOT-BC314758  Helianthella californica var. nevadensis A. A. Heller 1915-5-25 11897 Butte Ridge above Enterpirse in the Sierra Nevada 609 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
  UCR219090  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  CHSC66433  Heliotropium curassavicum Vernon H. Oswald; Lowell Ahart 1996-6-10 7748 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Near a U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On edge of the farm road bordering the slough on the E side of Little Grant, near the Riparian Sanctuary. 28 Comment
  JEPS128617  Heliotropium europaeum Lowell Ahart 2017-8-8 21656 Butte Park, west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CAS-BOT-BC314997  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  CHSC31562  Herniaria hirsuta subsp. hirsuta L. Ahart 1975-7-4 845 Butte In roadway 1 mi n and 1 me e of Honcut. 38 Comment
  CHSC31900  Hesperocnide tenella L. Ahart 1974-4-7 339 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC203614  Hesperolinon micranthum A. A. Heller 1914-7-22 11587 Butte Little Summit 1463 Comment
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  SEINET10939149  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2684 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
  JEPS113324  Heterotheca grandiflora L. P. Janeway 2006-10-4 8901 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  CHSC29785  Heuchera micrantha var. erubescens M. S. Taylor 1982-5-27 2685 Butte On Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CAS-BOT-BC420458  Heuchera micrantha var. erubescens Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CAS-BOT-BC55327  Hirschfeldia incana John Thomas Howell 1961-9-22 36712 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CAS-BOT-BC55331  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  CHSC48570  Hoita orbicularis Vernon Oswald 1985-7-15 1905 Butte Concow Meadow located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. Growing on the edge of Concow Creek. 1097 Comment
  CAS-BOT-BC280711  Holcus lanatus John Thomas Howell 1962-6-15 37483 Butte Magalia 731 Comment
  CHSC41281  Holcus lanatus S. C. Morey 1983-7-21 499 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC149862  Holodiscus discolor Lowell Ahart 1981-7-7 2931 Butte Forbestown 750 Comment
  UC1594728  Holodiscus discolor Lowell Ahart 1992-7-26 6842 Butte 2 air mi S of Snow Mountain (W side of a small stream 1/2 mi N of the Carr Mine) 1767 Comment
  CAS-BOT-BC150114  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville 2000 Comment
  SEINET10528772  Hookera californica A. Arthur Heller 1938-5-22 Heller 15106 Butte Plentiful near the Chico airport in red clay soil derived from disintegrated lava, Upper Sonoran Life Zone, growing with H. coronaria. Comment
  CHSC33671  Hordeum brachyantherum subsp. brachyantherum L. Ahart 1981-5-24 2836 Butte On banks of a wash on Peter Ahart Ranch, ca. 1.5 mi n and 1/15 mi e of Honcut. 50 Comment
  CHSC31718  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 758 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6161  Hordeum vulgare E. Parreno 1968-4-14 50 Butte Adjacent vacant lot n of Community Congregational Church on e 1st. Ave., Chico. 59 Comment
  CHSC86111  Horkelia californica subsp. dissita L. P. Janeway; John Hunt 2003-4-22 7761 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 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
  UCD113568  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville. 1550 Comment
  UCD113569  Horkelia tridentata var. tridentata Joseph M. DiTomaso 1976-5-23 475 Butte Peninsula on south side of Lake Oroville. 274 Comment
  CAS-BOT-BC536265  Horkelia tridentata var. tridentata Javier Penalosa 1962-6-18 2470 Butte Near confluence of French and Peavine Creeks 640 Comment
  SEINET957954  Hosackia oblongifolia E. B. Copeland 1930-1 420 Butte Jonesville. 1500 Comment
  SEINET5327465  Hosackia oblongifolia var. oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC50407  Hosackia stipularis var. ottleyi Vernon Oswald; Lowell Ahart 1990-6-27 4334 Butte Four Trees Rd 0.5 mi north of Coyote Gap. 1341 Comment
  CHSC39098  Hydrophyllum occidentale R. A. Schlising 1982-5-19 4243 Butte Lumpkin Ridge, ne of village of Feather Falls. 1280 Comment
  CHSC38062  Hypericum anagalloides R. E. Preston 1982-6-23 308 Butte In meadow at edge of stream, Deadwood Creek at Dixie Valley Road. 999 Comment
  CHSC46359  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  JEPS113169  Hypericum concinnum Lowell Ahart 2007-5-29 13925 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC410224  Hypericum concinnum Mrs. J. H. Morrison 1932-5-22 s.n. Butte Durham Comment
  SD7538  Hypericum concinnum Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC133561  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte Near Stirling 1074 Comment
  CHSC46530  Iris hartwegii subsp. hartwegii Lowell Ahart 1980-5-19 2316 Butte Growing on the ridge east of the Golden Trout Crossing on the South Fork of the Feather River, about 4 miles west of the Sly Creek Dam. 1066 Comment
  CHSC109136  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 31/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 350 Comment
  CHSC29031  Iris macrosiphon J. D. Jokerst 1980-3-28 526 Butte E of the northern most portion of North Table Mt. 365 Comment
  CHSC90010  Iris macrosiphon Ross Rowland 2001-3-28 13 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  CHSC90620  Iris macrosiphon Chris Bradley 1988-4-18 13 Butte Honey Run Rd. ca. 8 miles ese of Chico; on roadside ca. 1 mile e of Covered Bridge. 121 Comment
  SEINET10469751  Iris macrosiphon Mary Susan Taylor 1978-5-6 Taylor 1577 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC94929  Isoetes howellii W. Gray; M. Brown 2005-3-16 34 Butte West of Wildwood park, Chico. 85 Comment
  CAS-BOT-BC69948  Isoetes howellii Lowell Ahart 1974-5-30 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC61872  Isoetes nuttallii Lowell Ahart 1979-4-17 s.n. Butte 2 mi. n.w. of Bangor, about 1/4 mile north of Avacado Ave. 150 Comment
  CHSC60935  Isoetes nuttallii Lowell Ahart 1993-5-17 6945 Butte East side of Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 53 Comment
  JEPS117727  Isoetes nuttallii Lowell Ahart 2010-5-14 16655 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
  CHSC99760  Isolepis setacea Lowell Ahart 2008-7-23 15149 Butte On the north edge of the South Fork of the Feather River, about 10 yards east 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
  SEINET10937859  Juglans hindsii Mary Susan Taylor 1975-5-6 Taylor 559 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
  CHSC36891  Juncus L. Ahart 1982-6-1 3527 Butte Along the road, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC34202  Juncus acuminatus J. D. Jokerst; L. Ahart 1981-9-26 1487 Butte Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico E bank Sacramento River. Comment
  JEPS94727  Juncus acuminatus Lowell Ahart 1998-6-30 8007 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC1609495  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte ca. 3 1/4 mi. n.w. Biggs (on Rice Experiment Station, on s. side of Butte City Hwy., e. of S.P.R.R., w. of Riceton Rd.); Rice Experiment Station 30 Comment
  CHSC116745  Juncus bufonius var. bufonius Lowell Ahart 2016-5-24 20869 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC41987  Juncus bufonius var. bufonius Lowell Ahart 1986-11-14 5471 Butte 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
  CHSC82417  Juncus bufonius var. bufonius Lowell Ahart 2002-5-7 9633 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
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  CHSC42137  Juncus bufonius var. occidentalis Lowell Ahart 1984-7-19 4733 Butte Along the edge of the dirt road, there is a seep along the road gutter in this area, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  CHSC116640  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  RSA304353  Juncus capitatus Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch, ca 2 1/2 miles NNE of Honcut, between Marysville and Oroville. 30 Comment
  SEINET10472434  Juncus capitatus Mary Susan Taylor 1978-5-7 Taylor 1601 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS87455  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7112 Butte ca. 6 (air) mi. n.e. Feather Falls (s. side of dirt rd., ca. 200 yds. s.w. of bridge across Fall River) 1036 Comment
  UC1609269  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7109 Butte about 6 air mi ne of Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River); s of Fall River 1036 Comment
  UC600802  Juncus drummondii H. F. Copeland 1932-8-22 Butte se of head of Butte Creek; Jonesville 2100 Comment
  CHSC44443  Juncus dubius Lowell Ahart 1988-6-23 6072 Butte In the meadow, south of the intersection of Black bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CDA38393  Juncus dubius L. Ahart 2000-6-17 8485 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  SD192836  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, ca. 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, ca. 0.25 mile west of the Ponderosa Dam. 257 Comment
  CHSC111068  Juncus effusus subsp. pacificus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16759 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of of gravel Lumpkin Road; UTM 10 655439 east, 4387540 north. 1242 Comment
  SEINET10472476  Juncus effusus var. pacificus Mary Susan Taylor 1978-7-19 Taylor 1749 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  POM110832  Juncus ensifolius C. C. Bruce 1897-05 1880 Butte Little Chico Comment
  RSA718499  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  RSA742781  Juncus ensifolius L. Ahart 2008-7-23 15142 Butte 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
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Feb 2 2010
  CHSC61520  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-6-20 6974 Butte Tracks of a logging Road, about 1/2v mile south of Quartz Hill. 1219 Comment
  UC1564788  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-6-27 3830 Butte ca 3.3 air mi se Jonesville (Humbug Rd at Butte Creek); Butte Creek 1767 Comment
  CHSC39402  Juncus howellii L. Ahart 1983-8-16 4314 Butte In a small meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. On bottom of small stream. 1600 Comment
  UC842621  Juncus howellii A. A. Heller 1917-7-28 12837 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC110146  Juncus leiospermus var. ahartii Lowell Ahart 1974-4-24 423 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47563  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte On the bottom of a vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC110137  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-29 1895 Butte Sierra Nevada. Near Krinkle Reservoir, ca. 2.5 miles southeast of Paradise. 500 Comment
  CAS-BOT-BC110142  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 s.n. Butte Sierra Nevada. Table Mountain, ca. 7 miles north of Oroville. 400 Comment
  CDA34709  Juncus leiospermus var. leiospermus L. Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CHSC103713  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC113248  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 356 Comment
  CHSC93497  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12585 Butte Margins of a vernal pool where there is basalt shelfing, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 395 Comment
  JEPS110156  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 368 Comment
  JEPS117670  Juncus nevadensis Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  CHSC57160  Juncus oxymeris L. P. Janeway 1988-6-14 2763 Butte Northwest side of canyon of Little Chico Creek, ca 2 air mi south of Ten Mile House. 259 Comment
  JEPS121939  Juncus oxymeris Lowell Ahart 2014-7-7 19595 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM197255  Juncus oxymeris H. F. Copeland 1923-8-13 1099 Butte Nelson. Comment
  CHSC102621  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  JEPS113747  Juncus usitatus Lowell Ahart 2007-7-11 14291 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  JEPS124333  Juncus usitatus Lowell Ahart 2015-10-16 20560 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA726656  Juncus usitatus L. Ahart 2007-7-5 14249 Butte 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air southwest of Gridley. 25 Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  RSA0111938  Keckiella breviflora var. glabrisepala Lowell A. Ahart 2015-5-5 20143 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. 40 Comment
  CHSC38694  Keckiella lemmonii Vernon Oswald 1983-6-17 698 Butte Upper Bidwell Park, Chico, on the n side of Chico Creek ca. 200 ft w of the parking area at Day Camp. 91 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
  CAS-BOT-BC340331  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  CHSC26747  Lactuca saligna M. S. Taylor; M. Hayes 1977-8-16 1443 Butte Around maintance buildings, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  JEPS115280  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 263 Comment
  CHSC102617  Lactuca serriola Lowell Ahart 2009-7-9 16024 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  RSA754844  Lactuca serriola L. Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 mile east of Honcut, about 12 air miles south of Oroville. 32 Comment
  OBI15967  Lagophylla glandulosa Robert F. Hoover 1965-10-16 9719 Butte Deer Crk rd E of Chico Comment
  CAS-BOT-BC341314  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CHSC28915  Lamium amplexicaule M. S. Taylor 1980-3-1 2329 Butte West end on n side of Neal Rd, ca 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  UCD125083  Lamium amplexicaule A. A. Heller 1920-4-10 13360 Butte Chico. Comment
  CDA38792  Lamium purpureum L. Ahart 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell park, city of Chico. Comment
  CHSC65891  Lasthenia californica Vernon H. Oswald 1996-4-20 7395 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. In the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC56753  Lasthenia fremontii J. D. Jokerst 1980-3-26 Butte East side of Chico; 100 m northeast of junction of Bruce Road and Skyway. Comment
  CHSC65892  Lasthenia fremontii Vernon H. Oswald 1996-4-20 7393 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  POM30704  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  UC2061406  Lasthenia gracilis Rachael L. Olliff Yang with Meagan F. Oldfather 2017-4-5 12 Butte Table Mountain, about 100 m North of the main public parking lot. Comment
  CHSC50323  Lathyrus brownii Vernon Oswald; Lowell Ahart 1990-5-29 4264 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CHSC93071  Lathyrus brownii L. P. Janeway; B. Castro 1994-4-21 4643 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1079 Comment
  CAS-BOT-BC213336  Lathyrus jepsonii subsp. californicus R. R. Kehlor 1951-4-14 26 Butte 6 1/4 miles east of Oroville on Mt. Ida Road Comment
  CAS-BOT-BC213347  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-6-12 8786 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  RSA21632  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-6-12 2852 Butte Sacramento Valley, 1 mi. no. of Durham. 46 Comment
  UCD106383  Lathyrus nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  SEINET10937186  Lathyrus nevadensis subsp. lanceolatus Mary Susan Taylor 1978-7-19 Taylor 1732 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC6038  Lathyrus sylvestris M. MacArthur 1968-6-18 221 Butte Ca. 30 ft. SE big Chico Creek, just NE of Bidwell Boul, Chico State College campus. 60 Comment
  JEPS102569  Lavatera cretica Lowell Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 1/4 miles (air) NW of Honcut, about 1 mile south of Oroville. 29 Comment
  CAS-BOT-BC321780  Layia fremontii Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch 50 Comment
  CHSC2378  Layia fremontii R. Carter 1965-5-14 200 Butte Found 1.4 mi. W of Hwy. 40A on Old Chico Rd. along N side of road, these taken along fence. 51 Comment
  CHSC45893  Layia fremontii Lowell Ahart 1974-4-11 365 Butte Vernal pool or swale, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM284970  Layia fremontii Lyman Benson 1935-3-27 6369 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  UC1609053  Ledum glandulosum Lowell Ahart 1993-7-29 7132 Butte about 1 1/2 mi se of Bald Mountain (on n side of dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  CAS-BOT-BC274351  Leersia oryzoides John Thomas Howell 1959-9-20 34650 Butte Eastern outskirts of Oroville 60 Comment
  CHSC8767  Lemna minor S. Chulasmai 1966-3-25 1 Butte Dradger Pond (3 mile south of Chico). Comment
  JEPS120152  Lemna minuta Lowell Ahart 2012-10-20 18491 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
  JEPS127248  Lemna minuta Lowell Ahart 2016-9-4 21341 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC82421  Leontodon saxatilis subsp. longirostris Lowell Ahart 2002-5-7 9610 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
  CAS-BOT-BC215737  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 mi. SW of Forest Ranch 548 Comment
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  CHSC750  Lepechinia calycina M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  SEINET13946688 Image available Lepechinia calycina A. A. Heller 1915-1 11906 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  JEPS87616  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte about 1.5 mi n and 1 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CHSC90042  Lepidium nitidum Richard R. Snow 1991-3-25 4 Butte 25 yds n of Renkow Rd., .5 mi e of Meridian Rd. ca. 12.8 mi n of Chico. 70 Comment
  CHSC88856  Lepidium nitidum var. nitidum Christine Hantelman 2000-4-2 11 Butte On firebreak scraped along south side of fence parallel to Wookey Road .2 mi west of ranch gate. 112 Comment
  SEINET10448291  Lepidium perfoliatum Mary Susan Taylor 1982-4-28 Taylor 4363 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC35023  Lepidium strictum R. E. Preston 1982-3-27 204 Butte At roadside; W. First Ave between Warner and Cedar Sts, Chico. Comment
  CAS-BOT-BC13064  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-6 5511 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC13065  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-9 5601 Butte Along Pulga Road, about 2 miles southwest of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC83005  Leptochloa fusca subsp. fascicularis Lowell Ahart 2002-9-7 9929 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 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
  CHSC44323  Leptosiphon ciliatus Lowell Ahart 1979-4-22 1833 Butte On a bank along North Honcut Creek, about 1/2 mile north of Avocado Avenue and on the east side of North Honcut Creek, about 3 miles north-west of Bangor. 91 Comment
  CHSC29789  Leptosiphon filipes M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2870 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC62775  Leptosiphon filipes L. P. Janeway 1993-6-9 4376 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. East-facing slope above French Creek. 621 Comment
  CHSC25325  Lessingia nana M. Hayes; Warner 1977-8-29 52 Butte Next to Firing Range in Upper Bidwell Park, Chico. 80 Comment
  RSA181940  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CAS-BOT-BC341789  Lessingia nemaclada John Thomas Howell 1962-6-16 37551 Butte Magalia 731 Comment
  CHSC39349  Lessingia nemaclada Lowell Ahart 1983-6-30 4179 Butte Along the dirt road, about 1 1/2 miles north-east of Concow Res. 550 Comment
  JEPS108726  Lessingia nemaclada Lowell Ahart 2006-9-28 13362 Butte At the end of the dirt road, about 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 480 Comment
  CDA8197  Lessingia nemaclada var. mendocina T. C. Fuller 1958-7-7 1913 Butte 1 mile north of Pulga Station. 0 Comment
  CHSC27621  Lessingia virgata Robert A. Schlising 1977-10-9 3208 Butte Cohasset Road S of Cohasset, 3.0 mi NE of road to Richardson Springs and 3.3 mi NE of crossing of Mud Creek. Roadside. Comment
  CHSC28736  Lessingia virgata Robert Schlising 1979-10-4 3494 Butte Archery range just e of lake in Bidwell Park, Chico. Comment
  CHSC42469  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC43878  Leucothoe davisiae L. P. Janeway 1987-6-13 2218 Butte Along Concow Rd, just SW of jct with road to Five Corners and Stirling City. 1188 Comment
  CHSC43879  Leucothoe davisiae L. P. Janeway 1987-6-26 2306 Butte Edge of man-made pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  SEINET10830261  Lewisia cantelovii Mary Susan Taylor 1980-9-27 Taylor 3342 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC106598  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. 75 Comment
  JEPS87458  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n. & 3 mi. e. Honcut (on w. side of Dunstone Road, about 12 mi s.e. of Oroville) 60 Comment
  CAS-BOT-BC130564  Lilium humboldtii Mrs. C. C. Bruce 1897-6-1 1856 Butte unspecified Comment
  UC600463  Lilium kelleyanum E. B. Copeland Jul 1929 Butte Butte Creek; Jonesville 1550 Comment
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Dec 13 2006
  CHSC50980  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-19 1083 Butte Ca 2.6 km e. of the crossing of Coon Hollow Road at Coon Hollow Creek (W. Branch Feather R.). Comment
  CHSC30287  Lilium pardalinum subsp. shastense M. S. Taylor; R. A. Schlising 1980-7-6 3069 Butte On side of Old Humboldt Rd, ca. 0.8 mi ne of Cherry Hill Campground. 1463 Comment
  SEINET10495210  Limnanthes alba Mary Susan Taylor 1978-5-7 Taylor 1600 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  HSC97149  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte 'Meghdadi Property' in SE Chico, ca. 0.5 km N of Doe Mill Rd., ca. 0.5 km E of S end of Potter Rd., and 0.25 km W of old stone fence. Comment
  SEINET12183093  Limnanthes douglasii A. K. Bos 1978-1 4 Butte Along Skyway at intersection of Skyway and Bruce Rd., 3.5 mi ESE of Chico Comment
  RSA262376  Limnanthes douglasii subsp. douglasii Gary L. Carlin 1971-4-10 4 Butte Cherokee Road, north rim of Table Mountain, 6.5 miles north of Oroville. Comment
  CHSC2386  Limnanthes douglasii subsp. rosea R. Carter 1965-3-30 174 Butte Found in vernal pools on Wurlitzer Ranch NW of Chico, inside gate. 60 Comment
  RSA33078  Limnanthes douglasii subsp. rosea A. A. Heller 1938-4-14 s.n. Butte Flat, treeless summit of Table Mountain north of Oroville. Upper Sonoran Life Zone. 305 Comment
  CDA35336  Limnanthes douglasii subsp. rosea T. C. Fuller 1958-4-15 4800 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  HSC92522  Limnanthes douglasii subsp. rosea Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 43 Butte 3 mi. NE of Chico in Bidwell Park. 290 Comment
  CHSC67561  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3046 Butte Roadside ditch adjacent to Keefer Rd. ca. 0.25 mi W of Cohasset Hwy. Comment
  SFV2131  Limnanthes striata M. L. Vincent 1961-3-29 33 Butte Sacramento Valley 1 mile west of Chico. On Highway to Oroville. 60 Comment
  CDA6280  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. Comment
  UCD128331  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  UCD141831  Limnophila X ludoviciana J. Eckert 2013-10-14 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  CDA38643  Limnophila X ludoviciana Cass 2012-10-31 PDR# 041 P06003903 Butte Nelson; Aguas Frias Road and Nelson Road. 0 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
  POM65888  Linanthus dichotomus subsp. meridianus E. B. Copeland 1903-4-11 3030 Butte Chico. Comment
  CHSC11951  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville. Mountain top west of 'the Summit. 2150 Comment
  SD4004  Linanthus pungens E. B. Copeland 1931-6-22 682 Butte Jonesville, Mountain top west of the Summit Comment
  CHSC112077  Lindernia dubia var. anagallidea B. Castro 2013-7-26 1997 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. Bed of central channel. 54 Comment
  RSA0037498  Lindernia dubia var. anagallidea Lowell A. Ahart 2013-7-9 18832 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  SEINET10569962  Lindernia dubia var. anagallidea Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5226 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CHSC55618  Lipocarpha L. P. Janeway 1986-9-20 1880 Butte At edge of gravel bar along east side of Sacramento River, just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC55619  Lipocarpha L. P. Janeway 1986-10-19 1929 Butte In rocks and sand along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC74726  Lipocarpha aristulata B. Castro 1987-8-25 203 A Butte Lower Butte Creek, on cobble and gravel bars along S edge, ca 0.25 mi E of its crossing under Hwy 99, and 2.1 mi S of the Skyway. 60 Comment
  CHSC34201  Lipocarpha micrantha J. D. Jokerst; L. Ahart 1981-9-26 1487 B Butte Low lying swale, E of Sacramento River ca 100 m, Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CHSC37824  Lipocarpha micrantha R. A. Schlising 1979-10-13 3501 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  UC1562297  Lipocarpha micrantha Lowell Ahart 1990-7-15 6566 Butte about 1/4 mi nw of the Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area) 243 Comment
  CAS-BOT-BC111976  Lipocarpha micrantha Lowell Ahart 1983-9-17 4430 Butte Near Kunkle Res, near Paradise. 600 Comment
  CHSC61653  Listera convallarioides Lowell Ahart 1993-9-13 7228 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC43228  Lithocarpus densiflorus Lowell Ahart 1987-9-18 5885 Butte Along the dirt road, about 1/2 mile west of Pinkard Creek, 1 1/2 miles west of the Sly Creek Reservoir. 1097 Comment
  CHSC96243  Lithophragma parviflorum var. parviflorum R. Fischer 2006-4-21 986 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 the bottom of 10 Mile House Road, ca. 250 ft. s of gated park property line. 228 Comment
  RSA32009  Lithophragma parviflorum var. trifoliatum A. A. Heller 1929-4-12 14830 Butte Richardson s Springs Comment
  CAS-BOT-BC123105  Lithophragma trifoliatum C. C. (Mrs.) Bruce 1897-4-1 1844 Butte foothills Comment
  CAS-BOT-BC428452  Lithophragma trifoliatum Lowell Ahart 1981-4-9 2754 Butte Along banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  SFV3124  Lithospermum californicum M. L. Vincent 1962-4-20 219 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  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
  CHSC108589  Lobularia maritima L. P. Janeway 2011-10-20 10779 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. 66 Comment
  CHSC80515  Lobularia maritima Lowell Ahart 2001-4-15 8722 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC342384  Logfia gallica John Thomas Howell 1962-6-16 37560 Butte Magalia 731 Comment
  CHSC6633  Lolium M. MacArthur 1968-6-16 350 Butte 20 ft. SW of Big Chico Creek, just S of Esplanade Bridge, Chico State College campus. 60 Comment
  CAS-BOT-BC283389  Lolium multiflorum Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC38827  Lolium multiflorum Vernon Oswald 1983-2-2 58 Butte Upper Bidwell Park, Chico, along Yahi Trail on the flat above Diversion Dam. 121 Comment
  UC765468  Lomatium caruifolium var. denticulatum R. F. Hoover 1938-4-24 3238 Butte 3 mi. n. Chico Comment
  UC875115  Lomatium caruifolium var. denticulatum A. A. Heller 1915-3-6 11769 Butte 8 mi. n. Oroville Comment
  CHSC42604  Lomatium dasycarpum subsp. tomentosum Vernon Oswald 1985-4-28 1724 Butte Upper Bidwell Park, Chico, 100 ft w of Parking Area P. (between Salmon Hole and Devil's Kitchen). 207 Comment
  CHSC26811  Lomatium marginatum M. S. Taylor 1978-5-6 1597 Butte Magalia. 609 Comment
  SEINET10454499  Lomatium marginatum Mary Susan Taylor 1981-4-5 Taylor 3490 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  CDA38449  Lomatium utriculatum T. C. Fuller 1960-4-15 5007 Butte Highway 99E, ca. 10 miles northwest of Chico. 0 Comment
  CAS-BOT-BC240686  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC241436  Lonicera involucrata var. involucrata V. Oswald; L. Ahart 1988-7-26 3631 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 2072 Comment
  SEINET10465044  Lonicera japonica Mary Susan Taylor 1975-6-22 Taylor 784 Butte California State University, Chico, campus. 61 Comment
  SEINET10452684  Lotus grandiflorus var. macranthus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4139 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  JEPS87154  Lotus nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte about 0.5 mi n Flea Valley (e of intersection, about 4.5 air mi ne of Concow Reservoir) 1158 Comment
  JEPS94851  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek 1 mi n of Four Trees-Coyote Gap Road; Wildcat Creek 1396 Comment
  SEINET10874113  Lotus subpinnatus Mary Susan Taylor 1978-5-7 Taylor 1616 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UC204453  Ludwigia palustris A. A. Heller 1914-8-13 11683 Butte hills 8 mi. n. Oroville Comment
  UC1562387  Ludwigia palustris Lowell Ahart 1990-7-15 6565 Butte e. of Enterprise Boat Launch Area Lake Oroville (ca. 1/4 mi. n.w. of Enterprise Bridge across Lake Oroville) 243 Comment
  UCD66034  Ludwigia peploides subsp. peploides B. J. Grewell; R. McKee 2006-8-17 06- 42 -LU Butte Gray Lodge Wildlife Area north of Sutter Buttes. 21 Comment
  UC726682  Lupinus A. A. Heller 1942-5-18 16478 Butte a short distance w of the Hooker Oak e Chico Comment
  CHSC35985  Lupinus albicaulis var. shastensis J. D. Jokerst 1982-5-16 1571 Butte Ponderosa Way 0.5 mi N of its jct, with Lower Forbestown Road. 731 Comment
  SEINET5766838 Image available Lupinus albifrons subsp. eminens Lewis S. Rose 1931-1 s.n. Butte Oroville Comment
  CAS-BOT-BC201352  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 6.8 miles south - Chico Road Comment
  JEPS119527  Lupinus albifrons var. albifrons Lowell Ahart 2012-4-20 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC34683  Lupinus apertus M. S. Taylor; D. Dunn 1981-5-21 3781 Butte E side of rd 23N02, ca. 2 mi e of Rag Dump, ca. 6 air mi ne of Magalia. 1188 Comment
  RSA699513  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  CAS-BOT-BC196336  Lupinus argenteus var. argenteus J. D. Jokerst 1980-4-22 2261 Butte Top of Cohasset Ridge in community of Cohasset, SE of Cohasset Hwy and Cave Cr. 609 Comment
  UCD107337  Lupinus bicolor Collector Unknown 1925-5-17 1740 Butte Marysville Buttes. Comment
  JEPS114719  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 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
  CDA13329  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13175 Butte Sierra Nevada; at S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  SEINET10484003  Lupinus grayi Lowell Ahart 1985-6-17 Ahart 5046 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  SEINET10452086  Lupinus latifolius Lowell Ahart 1984-6-8 Ahart 4665 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  SEINET10452693  Lupinus latifolius subsp. longipes Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4197 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
  SEINET11072119 Image available Lupinus nanus subsp. menkerae H. E. Brown 1897-1 155 Butte Near Clear Creek Comment
  CHSC3935  Lupinus nanus var. apricus J. Senter 1967-4-10 17 Butte Located on Skyway turnout 4.5 mi. E. of Hwy. 99E. 396 Comment
  CHSC104791  Lupinus nanus var. vallicola L. P. Janeway 2010-6-19 10024 Butte Northern High Sierra Nevada. About 1.2 km south of Bald Rock Dome near a saddle along the ridge between Middle Fork Feather River and Bean Creek drainage; along Bean Creek Road at spur road to Dome Trail trailhead. 868 Comment
  JEPS108851  Lupinus nanus var. vallicola Lowell Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 337 Comment
  CHSC103001  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 209 Comment
  CHSC25003  Lupinus polyphyllus var. burkei E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  SEINET10490230  Lupinus sellulus var. artulus Edwin B. Copel 1931-7-3 Copeland 651 Butte Jonesville. Colby Canyon, in dry and barren openings. 1600 Comment
  CHSC99017  Lupinus stiversii Lowell Ahart 2008-5-21 14782 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  POM24038  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-05 2034 Butte Butte Creek. Comment
  SEINET10839432  Luzula campestris Lowell Ahart 1983-8-16 Ahart 4295 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  SEINET11787630  Luzula campestris L. Ahart, Ahart, P. 1984-1 4740 Butte ca 1.5 mi SE of Bald Mountain, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  CHSC59026  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir. 1676 Comment
  JEPS121974  Luzula comosa var. laxa Lowell Ahart 2014-7-7 19573 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  UC1594729  Luzula comosa var. laxa Lowell Ahart 1992-8-26 6845 Butte About 1/2 mile north of the Carr Mine about 2 (air) miles south of Snow Mountain 1767 Comment
  CAS-BOT-BC499136  Luzula macrantha Peter F. Zika 2012-5-16 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Los Creek Reservoir 1020 Comment
  CHSC101169  Luzula macrantha Lowell Ahart 2009-5-15 15711 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC96801  Luzula macrantha Lowell Ahart 2007-4-30 13705 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
  JEPS114964  Luzula subsessilis Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  CHSC34819  Lychnis coronaria M. S. Taylor 1981-5-21 3785 Butte In Mayaro, ca. 2 mi ne of Pulga on Hwy 70. 487 Comment
  CDA5133  Lythrum hyssopifolia L. P. Janeway, B. Castro 1999-6-4 6453 Butte Sacramento Valley; East side of the Sacramento River 1.6 km southeast of the Ord Ferry Road Bridge. Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  JEPS115254  Lythrum hyssopifolia Lowell Ahart 2009-6-30 15960 Butte West of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CDA18958  Lythrum salicaria R. Hill, Lee Pejas 2000-6-16 PDR 1170812 Butte on Hwy 99 at Dry Creek crossing. 0 Comment
  RSA4140  Madia bolanderi E. B. Copeland 1930-8-4 S.N. Butte Jonesville 1500 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  JEPS119913  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC40481  Madia exigua Lowell Ahart 1985-5-15 4986 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC25449  Madia glomerata Marc Hayes; Warner 1977-9-11 70 Butte Along road to Butte Meadows, exactly 5.8 mi from the turn to Butte Meadows on Hwy 32 onto Humboldt Road. 1127 Comment
  CAS-BOT-BC343278  Madia gracilis John Thomas Howell 1962-6-15 37479 Butte Magalia 731 Comment
  CHSC86135  Madia gracilis John Dittes; Josephine Guardino 2002-6-21 618 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  SEINET3450908  Madia gracilis Unknown 2003-6-30 10323 A Butte Forbestown, Forbestown, about 2 miles air northwest, southeast side of Ponderosa Way, about 2.5 miles by road southwest of the Ponderosa Dam 570 Comment
  SEINET12050643  Maianthemum racemosum subsp. amplexicaule Unknown 1986-1 993 Butte ca 0.3 mi N of road jct below Humboldt Peak, extreme N of county, near Scotts John Creek Comment
  SEINET10473908  Malacothrix californica Mary Susan Taylor 1974-5-3 Taylor 216 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  CHSC46834  Malva parviflora R. A. Schlising 1986-11-28 4510 Butte Gray Lodge Waterfowl Management Area. 18 Comment
  CHSC29019  Marah watsonii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2437 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi e of Oroville. 365 Comment
  CHSC101320  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  JEPS115835  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  JEPS117721  Marsilea vestita subsp. vestita Lowell Ahart 2010-6-20 16821 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  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
  CHSC3309  Matthiola incana M. Gregg 1966-4-13 68 Butte Corner of 20th and Salem Streets in Chico. In flower bed. Comment
  CAS-BOT-BC422644  Meconella californica Mrs. C. C. Bruce 1897-2-1 2018 Butte Unspecified Comment
  HSC23410  Meconella californica G. G. Poulsen, Jr. 1971-3-2 2 Butte 200 yards off Honney Run Rd., 100 yds. past Covered Bridge on hill facing Butte Creek 91 Comment
  UC865635  Medicago arabica A. A. Heller 1915-5-2 11864 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  SEINET8721630 Image available Medicago ciliaris Roland McKee 1908-1 7742 Butte Chico Comment
  UC1609456  Medicago lupulina Lowell Ahart 1993-11-1 7274 Butte on s side of Butte City Hwy e Southern Pacific Railroad (w of Riceton Rd, about 3 1/4 mi nw of Biggs); Rice Experiment Station 30 Comment
  CHSC90496  Medicago polymorpha L. Orme 1980-3-15 3 Butte West of railroad tracks, 0.8 km southwest of Chico. Edge of a cultivated field. 55 Comment
  CHSC101314  Medicago praecox Lowell Ahart 2009-4-22 15575 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UCR115068  Melica aristata G. Fred Hrusa, T. D. Wilfred 1996-7-8 13101 Butte Near Old Railroad Grade Road, Paradise Lake Dam, c. 3 m. north of Magalia 800 Comment
  CAS-BOT-BC269384  Melica californica John Thomas Howell; H. Keith Wagnon 1980-5-26 53577 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  CHSC8226  Melica californica D. McClain 1969-5-1 67 Butte 15 yds. s. of Cohasset Rd., 3.2 mi e. of Cohasset. 457 Comment
  CHSC49560  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  CHSC88191  Melica subulata Lowell Ahart 2004-7-23 11300 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  UCD89080  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  SEINET10874131  Melilotus albus Mary Susan Taylor 1975-10-31 Taylor 982 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  HSC96978  Melilotus indicus L. Ahart 2005-5-2 11772 Butte E side of the Sacramento River, NW of Parrott Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 mi. SW of Chico. 26 Comment
  SEINET11268221  Melilotus officinalis Lowell Ahart 2001-6-13 8817 Butte On the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Managment Area, about 4 miles (air) southwest of Gridley.; 0 23 Comment
  CHSC102627  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 181 Comment
  CHSC111133  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte Dry high bank on the north side of Big Chico Creek, west of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC43843  Melissa officinalis B. Castro 1987-8-25 209 Butte Butte Ck ca 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  JEPS108134  Melissa officinalis Lowell Ahart 2005-11-12 12483 Butte Bottom 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
  CHSC89464  Mentha pulegium R. D. Fischer 2004-7-21 449 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10-Mile House Road near end of park property. In mdw along drainage, between road and Big Chico Creek. 216 Comment
  CHSC24927  Micranthes fallax T. L. Reynolds 1976-4-23 61 Butte Ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC11903  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. In swamp. 1550 Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  CHSC31088  Micropus californicus var. californicus Roberta A. Boer 1980-4-13 5 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC31663  Microseris sylvatica L. Ahart 1979-4-19 1831 Butte Fields near Douglas Oaks. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28566  Microsteris gracilis M. S. Taylor 1978-6-24 1643 Butte On Ernies Island, in Butte Creek, jct with Old Humbolt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC34992  Microsteris gracilis R. A. Schlising 1980-6-10 3664 Butte Along Humboldt Road, 1.9 mi NE of jct with Highway 32 at Lomo. Comment
  RSA715721  Microsteris gracilis subsp. gracilis L. P. Janeway 2005-3-1 8337 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  JEPS86870  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte 0.5 mi s Derrick Road (along e side of Cherokee Road, vernal pool ca. 100 yds. from road); Table Mt. 400 Comment
  UC600647  Mimulus bicolor E. B. Copeland 1931-5-9 Butte Jonesville Comment
  CDA41666  Mimulus bifidus subsp. bifidus J. R. Keck Jr. 1978-5-23 PDR# 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  JEPS5545  Mimulus glaucescens R. F. Hoover 1937-5-18 2235 Butte 3 mi n Chico Comment
  RSA454333  Mimulus glaucescens M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  SEINET10570232  Mimulus glaucescens Mary Susan Taylor 1974-4-30 Taylor 193 Butte Along Cohasset Road, NE of Chico. Comment
  CHSC98977  Mimulus guttatus Lowell Ahart 2008-5-12 14737 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  RSA32856  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte Summit of Table Mtn. 305 Comment
  HSC32602  Mimulus kelloggii Linda M. Barker 1974-4-20 163 Butte Table Mtn., Central Valley 305 Comment
  RSA712757  Mimulus layneae L. P. Janeway 2005-5-29 8399 Butte Northern High Sierra Nevada. Between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. (NAD83) 762 Comment
  SEINET1943061  Mimulus layneae David Thompson 1988-6-8 937 Butte Butte Co., Calif. 0.2 mi E of Zinc Road (S jct) along Bald Rock Road; T21N, R5E, center of N1/2 S36 Common on sand of decomposing granite outcrop 749 Comment
  JEPS47715  Mimulus nanus var. mephiticus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2699 Butte w side Pulga Bridge; North Fork of Feather River 487 Comment
  UC426953  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville 1500 Comment
  RSA80101  Mimulus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road. Comment
  UCD122930  Mimulus torreyi L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  JEPS103308 Image available Mimulus tricolor Lowell Ahart 2002-4-14 9484 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. Comment
  CHSC93500  Minuartia californica Lowell Ahart 2006-5-8 12590 Butte Margins of a vernal pool, about 80 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. 346 Comment
  HSC43125  Minuartia californica Maralyn O'Meara 1974-4-20 278 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC65195  Minuartia cismontana Lowell Ahart 1995-5-30 7588 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 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
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  CHSC65566  Monardella odoratissima R. Banchero 1981-6-26 530 Butte Oak Point where Keyser Ck runs through. 1487 Comment
  CHSC58926  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  RSA107826  Monardella odoratissima subsp. pallida L. S. Rose 1955-6-15 55105 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  UC1594567  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte about 1/2 mi north-west of Lotts Lake (about 1 mi east of the Carr Mine) 1828 Comment
  CHSC109560  Monardella sheltonii L. P. Janeway 2012-6-23 10888 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC96829  Monardella sheltonii Lowell Ahart 2007-5-29 13940 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  JEPS107530  Monardella sheltonii Lowell Ahart 2005-7-12 12137 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  JEPS104298  Monardella villosa subsp. villosa Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) north of Forbestown. 481 Comment
  CDA2666  Monochoria vaginalis T. C. Fuller 1976-7-8 20150 Butte Rice Experiment Station, 3 miles north of Biggs. 0 Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC100972  Montia fontana subsp. amporitana 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
  CHSC10724  Montia fontana subsp. chondrosperma Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC27071  Montia fontana subsp. chondrosperma James T. Nicol 1978-3-15 12 Butte Ca. 30 m se of junct. of Honey Run-Humbug Rds. 10.2 km ese of Chico. 120 Comment
  CHSC39886  Montia fontana subsp. chondrosperma M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5405 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC20539  Morus alba Pamela Caldwell 1972-3-18 Butte Back parking lot of A. J. H. Bldg. CSUC campus. Comment
  CAS-BOT-BC260534  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  CHSC11976  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville. 1550 Comment
  CHSC69739  Muhlenbergia filiformis Lowell Ahart 1997-10-20 7931 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  POM196084  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  UCD86606  Muhlenbergia filiformis H. F. Copeland 1929-6-9 s.n. Butte Jonesville. Comment
  UCD86613  Muhlenbergia filiformis A. A. Heller 1917-7-26 12832 Butte Butte Meadows. Comment
  SEINET11688374  Muhlenbergia jonesii Unknown 1985-1 5198 Butte near E side of Kunkle Reservoir, about 2 mi S of Paradise 503 Comment
  CHSC51291  Muhlenbergia mexicana Lowell Ahart 1990-10-21 6635 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  CHSC51292  Muhlenbergia mexicana Lowell Ahart 1990-9-30 6610 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 acoss Lake Oroville. 243 Comment
  CHSC38835  Muhlenbergia rigens Vernon Oswald 1982-10-22 2 Butte Bidwell Park, Chico. Seep near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi east of its junction with Wildwood Ave. 121 Comment
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  CHSC52774  Myosurus minimus Kelly Beane 1981-4-16 3 Butte Ca. 0.5 mi. e of Hwy 99 and The Skyway intersect., 2 mi. e of Chico. Along stream bed. 70 Comment
  JEPS118078  Myosurus minimus Lowell Ahart 2011-5-2 17349 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville 58 Comment
  CHSC48456  Myriophyllum aquaticum Vernon Oswald 1987-5-3 2366 Butte East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  JEPS120717  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 air miles north of East Biggs. Comment
  UC1100017  Najas graminea Verne Grant and Herbert L. Mason 1946-8-15 13047 Butte Greylodge Game Refuge, near caretaker's house Greylodge Game Refuge. Comment
  CHSC39099  Nama lobbii R. A. Schlising 1980-7-28 3929 Butte E of Jonesville in n part of county, on road to Scotts John Creek. Comment
  CHSC25047  Nassella pulchra G. Foster 1972-4-28 2 Butte In Bidwell Park at the corner of the archery range in upper park. Comment
  SBBG17025  Nasturtium officinale M. Vincent 1962-4-18 210 Butte Butte Crk Cyn near Humbug Rd, 1 mi E of old covered bridge Comment
  CDA40077  Navarretia filicaulis L. Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  CHSC69660  Navarretia filicaulis Vernon Oswald; Lowell Ahart 1997-9-9 8860 Butte Northeast of Forest Ranch on Doemill Rd. 1.3 mi west of Butte Creek Bridge, 0.6 mi east of Garland Rd. Roadside. 792 Comment
  CHSC79542  Navarretia filicaulis G. F. Hrusa; T. D. Wilfred 1997-5-3 13973 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise lake. Where last tributaries from E enter. 810 Comment
  RSA716046  Navarretia filicaulis L. Ahart 2005-7-12 12135 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 624 Comment
  CHSC44336  Navarretia heterandra Lowell Ahart 1988-5-12 5997 Butte In a pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UC1008733  Navarretia heterandra Lewis S. Rose 1945-5-12 45015 Butte Richardson Springs 304 Comment
  CHSC44415  Navarretia intertexta Lowell Ahart 1988-6-23 6077 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS115709  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15766 Butte Along a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC11952  Navarretia leptalea E. B. Copeland 1930-6-28 444 Butte Jonesville. In 'Scotch John' meadow. 1650 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  SEINET10496830  Navarretia leucocephala Mary Susan Taylor 1976-3-23 Taylor 1032 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  SEINET12319551  Navarretia leucocephala Unknown 1978-1 16 Butte ca 0.5 mi W of Hwy 99 on N side of Broyles Rd, NW corner of Butte County 61 Comment
  CAS-BOT-BC233620  Navarretia pubescens Alice Eastwood 1921-5-22 10516 Butte Los Vergils Comment
  SEINET10869734  Navarretia squarrosa Mary Susan Taylor 1977-6-25 Taylor 1393 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  UC102223 Image available Nemacladus interior Elisha Brooks Butte Enterprise; ; Enterprise, Butte Co. Comment
  CHSC65264  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada. 150 Comment
  CHSC84915  Nemophila heterophylla Joseph Silveira 1982-4-17 14 Butte 30 m south of Butte Creek and 25 m southeast of Covered Bridge, 10.2 km east-southeast of Chico. 100 Comment
  JEPS115823  Nemophila heterophylla Lowell Ahart 2009-4-26 15641 Butte On the south of Guardians Trail, about 30 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
  CHSC39095  Nemophila spatulata Robert Schlising; R. Banchero 1980-6-2 3629 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  RSA285937  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte Butte County,Naturalized in reservoir on N side of Nelson W road just E of Chico Butte City Road, Dodge Land Comment
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  UC398696  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi. n. Chico (on Richardson Springs rd.) Comment
  CHSC66673  Oenothera elata subsp. hirsutissima Vernon H. Oswald 1996-7-17 8065 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 Dan's Camp, north end of Riparian Sanctuary. 30 Comment
  JEPS44059  Oenothera elata subsp. hirsutissima W. L. Jepson 1939-8-17 19458 Butte near Oroville; Feather River 45 Comment
  CDA4254  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge southeast of Flea Mountain, north of Pulga, ca. 5 air miles east of Magalia. Comment
  SEINET4691040  Orcuttia greenei B. Crampton 1960-6-15 5621 Butte 10 miles southeast of central Chico Comment
  CHSC30397  Oreostemma alpigenum var. andersonii Diane H. Ikeda 1979-9-2 160 Butte Ca. 8.1 mi NE of junction of Humboldt Rd and Hwy 32 on Humboldt Rd at crossing of Butte Crk. 1463 Comment
  RSA0059255  Orobanche californica subsp. grayana Herbert F. Copeland 1930-8-30 1380 Butte Jonesville. From same plot as no.1019. 1524 Comment
  JEPS124297  Orobanche fasciculata Lowell Ahart 2015-4-13 20034 Butte About 2 1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. Comment
  JEPS80619  Orobanche fasciculata M. S. Taylor 1981-5-29 3814 Butte ca. 3 air mi. s.e. Pulga (ca. 0.5 mi. n. of 22N31, Chino Ridge); Pulga SW Quad., Chino Ridge 853 Comment
  CAS-BOT-BC500245  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-17 s.n. Butte 2.5 mi W of Bangor, 1/2 mi S of Avocado Ave. and S of teh Blue Lead Mine 100 Comment
  UC558451  Orobanche vallicola E. B. Copeland 1936-11-2 Butte Chico Comment
  SEINET10549654  Orthocarpus campestris Mary Susan Taylor 1979-5-6 Taylor 1999 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  RSA20870  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8331 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  RSA590215  Orthocarpus erianthus Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7224 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  SEINET12318314  Orthocarpus lacerus Unknown 1978-1 18 Butte 6.9 mi N of Cohasset Rd from East Ave jct 472 Comment
  SEINET10935051  Oryza sativa Mary Susan Taylor 1978-9-8 Taylor 1898 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  SEINET10454516  Osmorhiza chilensis Mary Susan Taylor 1978-7-19 Taylor 1733 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  RSA739733  Packera eurycephala var. lewisrosei L. P. Janeway, B. Castro 2007-5-6 8973 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  CHSC38838  Panicum acuminatum var. acuminatum Vernon Oswald 1983-5-31 587 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 200 ft e of Day Camp. 91 Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC253704  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  JEPS76249  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  UCD89510  Panicum capillare L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  JEPS88223  Panicum dichotomiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7755 Butte in US Fish & Wildlife parcel between 7 Mile Lane and Sacramento River, in NE corner of Tract 7.2, Sanctuary I Sacramento River National Wildlife Refuge, Llano Seco Unit 33 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
  SEINET7067155  Parvisedum pumilum A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  UC625524  Parvisedum pumilum Frank W. Gould 1938-4-23 306 Butte 2 mi n of Chico (along road) 60 Comment
  SEINET10973377  Parvisedum pumilum Mary Susan Taylor 1975-4-29 Taylor 537 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  UC1051427  Parvisedum pumilum Francia Chisaki with R. Bacigalupi and T. Robbins 1956-4-19 681 Butte 0.6 mi n of junction of Ord-Pentz-Magalia Road with Nelson Bar Road on the former road Nelson Bar Road Comment
  CAS-BOT-BC259621  Paspalum dilatatum John Thomas Howell 1959-9-20 34668 Butte Eastern outskirts of Oroville 60 Comment
  CHSC38839  Paspalum dilatatum Vernon Oswald 1983-6-3 630 Butte Upper Bidwell Park, Chico, on the side of the access road on the w bank of the diversion channel near Lindo Channel. 83 Comment
  CHSC38840  Paspalum distichum Vernon Oswald 1983-6-27 776 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC78964  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  CDA2123  Paspalum urvillei G. D. Barbe, T. C. Fuller 1981-10-9 3593 Butte Frontage of 9478 Black Bart Road, 1.3 miles east of Forbestown Road, Hurleton. Comment
  CDA42963  Paspalum urvillei L. Ahart 2013-7-1 18822 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. Comment
  CHSC25329  Pedicularis attollens Hayes; Warner 1977-8-14 38 Butte Marshy meadow along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  UC600441  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  POM15713  Pedicularis aurantiaca Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SFV3421  Pedicularis densiflora M. L. Vincent 1961-3-20 9 Butte Paradise. Harrison and Stearns Roads. 535 Comment
  CHSC26838  Pedicularis semibarbata M. S. Taylor 1978-6-24 1647 Butte Humboldt Summit, Butte Co and Tehama Co line. 2133 Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  SEINET10529809  Pellaea mucronata Mary Susan Taylor 1980-3-1 Taylor 2347 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET10529810  Pellaea mucronata Mary Susan Taylor 1980-4-27 Taylor 2547 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SBBG66459  Penstemon azureus A. A. Heller 1926-4-21 13926 Butte Rock Crk, 7 mi N of Chico Comment
  CHSC114692  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Roadside. Comment
  SBBG28908  Penstemon deustus E. B. Copeland 1931-6-11 Butte Jonesville 1600 Comment
  RSA0045598  Penstemon laetus subsp. leptosepalus Lowell Ahart 2011-7-9 17570 Butte About 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  JEPS106173  Penstemon laetus var. leptosepalus Lowell Ahart 2004-6-22 11122 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  UC887104  Penstemon laetus var. leptosepalus Lewis S. Rose 1939-6-7 39236 Butte 3 mi s Pulga (S Fork Feather River); , s of Pulga 609 Comment
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  UC195476  Penstemon neotericus A. A. Heller 1914-6-22 11485 Butte on edge of a n slope at Little Summit Little Summit 1463 Comment
  UC423642  Penstemon neotericus David D. Keck 1930-7-24 970 Butte 7 mi above Chaparral ((near Humbug Summit)); Sierra Nevada, above Chaparral, nr Humbug Summit 1706 Comment
  NY627343  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371.6 Comment
  NY627411  Penstemon newberryi var. newberryi L. Ahart 1980-5-19 2312 Butte Near bridge, South Fork of Feather River. 800 Comment
  UC600435  Penstemon newberryi var. newberryi H. F. Copeland 1932-7-19 Butte Jonesville, above Butte Creek opposite the Fishersman's Trail Comment
  LA209562  Penstemon procerus E. B. Copeland; 1931-6-20 Butte Jonesville, Butte Creek 1500.0 Comment
  CAS-BOT-BC239453  Penstemon rydbergii var. oreocharis C. S. Robinson 1929-7-4 124 Butte Lassen National Forest, Colby Mdw. 1219 Comment
  CHSC28892  Pentagramma triangularis M. S. Taylor 1979-4-5 1991 Butte Millsap Bar Campground, ca. 9 mi ne of jct Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC32629  Pentagramma triangularis M. S. Taylor; L. Hanson 1981-4-2 3468 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CAS-BOT-BC77132  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-7-29 4241 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC30302  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-5-27 2680 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC40223  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1984-7-2 1341 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  JEPS115269  Perideridia oregana Lowell Ahart 2009-6-30 15957 Butte West of the Guardian Rock Trail, about 100 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
  UC1532350  Perideridia oregana Vernon Oswald 1986-6-11 2109 Butte on Yahi Trail near Salmon Hole; Chico, Upper Bidwell Park 158 Comment
  CHSC40236  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-2 1880 Butte Scotts John Rd. 0.9 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC42757  Persicaria amphibia Lowell Ahart 1987-8-3 5852 Butte On dry red soil in an idle rice field, east of the Western Pacific Railroad, south of Central House Road, about 1 1/2 miles north and 1 mile west of Honcut. 30 Comment
  CHSC66166  Persicaria amphibia Vernon H. Oswald; Lowell Ahart 1996-5-27 7672 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Large colonies in a ditch between Seven Mile Lane and Tract 6, Santuary II, just N of the equipment parking lot. 32 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
  CHSC108124  Persicaria punctata Lowell Ahart 2011-10-29 17724 -A Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  SEINET11931071  Petrorhagia velutina S. M. Bryan 1974-1 11 Butte Along N side of Cohasset Highway, 7 mi NE of Chico 457 Comment
  CHSC45933  Phacelia cicutaria Lowell Ahart 1974-4-24 439 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET11263935  Phacelia egena Lowell Ahart 1992-9-20 6922 Butte Lake Oroville, about 1/8 miles west of the Enterprise Boat Launch Ramp, about 3/4 miles SW of Rocky Point.; 0 244 Comment
  SEINET10497011  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4722 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
  UC909976  Phacelia mutabilis A. A. Heller 1917-7-26 12831 Butte Butte Meadows 1402 Comment
  SEINET10658625  Phalaris caroliniana A. Arthur Heller 1914-4-17 Heller 11307 Butte Hills 8 mi. North of Oroville Comment
  CAS-BOT-BC250701  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  CHSC33672  Phalaris paradoxa L. Ahart 1991-5-24 2833 Butte On bottom of a wash in one of the pasture fields on Peter Ahart Ranch, ca. 2 mi e of Honcut. 50 Comment
  CAS-BOT-BC77374  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC20606  Philadelphus lewisii Robert A. Schlising 1964-6-11 2719 Butte 0.7 miles south of Paradise along Honeyrun Road. Comment
  CHSC37552  Philadelphus lewisii T. B. Devine 1977-6-5 415 Butte 2.2 mi NE of Centerville. Comment
  CHSC37653  Philadelphus lewisii T. B. Devine 1981-8-25 755 Butte Beside Hwy 70 near Bear Creek Ranch, along N Fork of Feather River near Cresta. 426 Comment
  CHSC39536  Philadelphus lewisii Lowell Ahart 1983-6-21 4080 Butte Found growing on dry rocky soil along Bloomer Hill Road, about 3/4 mile west of the Oroville-Quincy Highway, about 15 miles north-east of Oroville. Label says Section 6. 425 Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. 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
  SEINET4176107 Image available Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Reservoir, about 50 yards South of the Generator, 4.5 Miles North-East of Forbestown. 351 Comment
  SEINET10507565  Phleum pratense Mary Susan Taylor 1978-7-18 Taylor 1720 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
  JEPS21864  Phlox speciosa subsp. occidentalis Annette Waters 1958-4-19 227 Butte 2.5 mi e Lumpkin Road (on Oroville-Forbestown Road, en route to Oroville) Comment
  RSA325180  Phoradendron bolleanum subsp. densum M. S. Taylor, Vernon H. Oswald 1984-4-4 5396 Butte At jct of Coutelenc Road and the Skyway, Magalia, just N of Paradise. 372 Comment
  SEINET10903286  Phoradendron bolleanum subsp. densum Mary Susan Taylor 1980-2-17 Taylor 2316 Butte T23N R2E sec 17. In crevice of cliff, ca. 1/4 mi N of Mud Creek, ca. 1 mi NE of Richardson Springs Hotel. 366 Comment
  SEINET10492842  Phoradendron juniperinum subsp. libocedri Lowell Ahart, Peter Ahart 1985-9-15 Ahart 5169 Butte On dry lava cap, about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. Comment
  CAS-BOT-BC141243  Phoradendron serotinum subsp. tomentosum Forman T. McLean 1921-10-20 31 Butte Chico Comment
  CHSC86068  Phoradendron villosum R. D. Fischer 2004-1-4 46 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. East side of Upper Park Road between Diversion Dam and Salmon Hole. 213 Comment
  CDA13834  Physalis lancifolia G. F. Hrusa, T. D. Wilfred 1996-9-5 13562 Butte Butte Basin; White's Drain structure. E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CHSC31859  Physalis lancifolia L. Ahart 1972-6-21 125 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10483402  Physocarpus capitatus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5511 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC76344  Phytolacca americana L. P. Janeway 1999-7-12 6502 Butte Campus of California State University, Chico; north side of Big Chico Creek in weedy landscaping on the north side of Holt Hall. 59 Comment
  JEPS115644  Phytolacca americana Lowell Ahart 2009-8-13 16280 Butte West end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico 68 Comment
  UCR188556  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CHSC50635  Pilularia americana Lowell Ahart 1990-4-23 6465 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC6604  Pinus M. MacArthur 1968-6-19 316 Butte SE yard of Building V, Chico State College Campus. 60 Comment
  CAS-BOT-BC78450  Pinus contorta subsp. murrayana John H. Thomas 1974-11-3 17660 Butte Between Stirling City and Butte Meadows, north of Chico. 4.9 miles from Butte Meadows as measured along the road 1524 Comment
  CHSC3168  Pinus contorta subsp. murrayana Dona Kingsford 1966-3-13 Butte 2 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  NY61952  Pinus monticola E. B. Copeland 1929-7-17 331 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC3267  Pinus nigra M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CHSC20724  Pinus ponderosa M. S. Taylor 1975-8-31 902 Butte Off Humboldt Rd, Butte Meadows. 1341 Comment
  CHSC4460  Pinus ponderosa C. Glascock 1965-2-6 220 Butte Ca. 15 yds uphill from road. From Hwy. 70 turnoff on road 24N23 and turn E at its dead end-total dist. From Hwy=1.1 mi. Comment
  CHSC86581  Piperia elongata L. P. Janeway; Christine Hantelman 2003-6-19 7852 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 277 Comment
  CHSC86582  Piperia elongata L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7847 Butte Northern High Sierra Nevada. Along southeast edge of North Fork Feather River arm of Lake Oroville, between mouth of Berry Creek and mouth of French Creek. 280 Comment
  SEINET10905338  Piperia unalascensis Mary Susan Taylor 1978-7-18 Taylor 1694 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC4403  Piptatherum miliaceum R. L. Smith 1966-5-5 3 Butte Paradise, 5 mi sw of post office. Comment
  CHSC111405  Pistacia atlantica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
  SEINET10529828  Pityrogramma triangularis Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5238 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  SEINET10899935  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-3-20 Taylor 1958 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC116644  Plagiobothrys Lowell Ahart 2016-4-14 20742 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  CHSC7059  Plagiobothrys austiniae Lynn R. Thomas 1969-3-3 3 Butte S edge of Humboldt Rd., 1.4 mi e of junction with Stilson Canyon and Bruce Rds., or 3.3 mi e of US 99 freeway underpass, Chico. 152 Comment
  CHSC37422  Plagiobothrys bracteatus R. A. Schlising 1982-5-19 4251 Butte E of village of Feather Falls, just N of Fall River and Fall River Campground. Meadow. 1036 Comment
  RSA633336  Plagiobothrys bracteatus Michael A. Vincent, Ethan H. Freid 1998-4-6 8131 Butte Table Mountain Comment
  UCR46079  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 152 Comment
  CHSC115319  Plagiobothrys fulvus var. campestris Lowell Ahart 2015-4-18 20050 Butte On the east side of Robinson Mill Road, about 1 1/2 miles southwest of the intersection of Robinson Mills Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  CHSC44478  Plagiobothrys fulvus var. campestris Lowell Ahart 1988-5-12 5993 Butte Pasture field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC46760  Plagiobothrys fulvus var. campestris Lowell Ahart 1977-5-2 1340 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC44479  Plagiobothrys glyptocarpus Lowell Ahart 1988-5-12 5994 Butte On the bottom of a small wash, in a mined over area, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC104797  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte On damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. 398 Comment
  CHSC117346  Plagiobothrys glyptocarpus var. glyptocarpus B. Castro; L. P. Janeway 2014-4-4 2003 Butte Northern Sierra Nevada Foothills. On North Table Mountain, ca 5.5 air mi N of Oroville, 100 ft N of the main parking area just W of Cherokee Rd on the table top; ca 200 ft NE of the large lone oak tree by the parking lot. 406 Comment
  CHSC25484  Plagiobothrys greenei L. Ahart 1977-4-15 1297 Butte Found in the bottom of swales and vernal pools. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28480  Plagiobothrys greenei R. A. Schlising 1979-4-15 3363 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
  CHSC28992  Plagiobothrys greenei J. D. Jokerst 1980-3-27 522 Butte N of Chico Muni Airport, E of Cohasset Hwy. 97 Comment
  SEINET10837186  Plagiobothrys greenei Mary Susan Taylor 1975-4-29 Taylor 541 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CAS-BOT-BC228254  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC105806  Plagiobothrys hispidulus Lowell Ahart 2010-9-21 17229 Butte Along the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC112712  Plagiobothrys hispidulus Lowell Ahart 2013-10-26 19209 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC49829  Plagiobothrys leptocladus Vernon Oswald 1990-4-4 4145 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 268 Comment
  CHSC103988  Plagiobothrys nothofulvus Lowell Ahart 2010-5-14 16672 Butte Along the trail, near the south park fence, 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. 257 Comment
  CHSC38277  Plagiobothrys nothofulvus Vernon Oswald 1983-3-6 127 Butte Upper Bidwell Park, Chico, on the north rim about 0.1 mi e of the power lines. 249 Comment
  CHSC40764  Plagiobothrys nothofulvus Ahart; Jokerst 1985-5-10 4955 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC54361  Plagiobothrys nothofulvus M. Bailey 1991-3-30 558 Butte Butte College campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  CHSC35055  Plagiobothrys scriptus R. A. Schlising 1981-3-30 4011 Butte E of Chico, on old Bruce Road, 0.5 mi N of Skyway; roadside. 79 Comment
  JEPS106005  Plagiobothrys scriptus Lowell Ahart 2004-4-4 10715 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC48001  Plagiobothrys shastensis Vernon Oswald 1983-4-4 263 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 Comment
  JEPS104013  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Rd Boat Ramp, on the n side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin road, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 38 Comment
  CHSC48002  Plagiobothrys stipitatus Vernon Oswald 1983-5-6 434 Butte Nord-Cana Hwy. 0.5 mi n of Bennett Rd. Along the edge of a vernal pond. Comment
  UC634851  Plagiobothrys stipitatus H. L. Mason 1927-5-9 3704 a Butte 12 mi w Oroville Comment
  POM71619  Plagiobothrys stipitatus C. C. Bruce 1898-03 2417 Butte Sloughs. [No further location information.] Comment
  RSA475191  Plagiobothrys stipitatus var. micranthus Aaron Liston, S. Meury 1988-5-28 743 -3 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  SEINET3449087  Plagiobothrys stipitatus var. micranthus Unknown 2003-5-28 10229 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain west of Cherokee Road, about 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence 270 Comment
  CHSC29274  Plagiobothrys tenellus R. A. Schlising 1980-4-19 3567 Butte North of village of Feather Falls, along trail to Feather Falls (on Fall River) from ne. 792 Comment
  SEINET10497556  Plagiobothrys tenellus Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4290 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CDA25096  Planodes virginica L. Ahart 2003-5-9 10123 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  CHSC80518  Planodes virginica Lowell Ahart 2001-4-27 8733 Butte Just northwest of the bridge across Wyandotte Creek, north of Lower Honcut Road, about 125 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  JEPS122274  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  CHSC39622  Plantago bigelovii Lowell Ahart 1983-4-10 3919 Butte South of a large wash, 1/10 mile east of the large barn, about 1 1/4 miles north-east of Hwy 99 and Pentz Road. 65 Comment
  RSA325025  Plantago bigelovii subsp. bigelovii L. Ahart 1984-4-24 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CDA42767  Plantago coronopus L. Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. Comment
  CHSC111355  Plantago elongata Lowell Ahart 2012-5-4 17995 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC24971  Plantago elongata T. F. Burnham 1976-4-20 11 Butte 50 ft s of Cana Pine Creek Road, at the intersection of 99 and Cana Pine Creek Road. 97 Comment
  CHSC24895  Plantago erecta T. A. Barrett 1976-4-15 20 Butte 2.7 km e of Chico off the Skyway. 30 Comment
  JEPS104023  Plantago erecta Lowell Ahart 2003-4-10 10061 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  SEINET10499870  Plantago hookeriana var. californica Mary Susan Taylor 1974-4-20 Taylor 183 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  SEINET9784516 Image available Plantago lanceolata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  SEINET10499811  Plantago lanceolata Mary Susan Taylor 1982-8-16 Taylor 4995 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
  CHSC65171  Plantago major Lowell Ahart 1995-8-19 7610 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
  CHSC38585  Plantago virginica Vernon Oswald 1983-5-2 421 Butte Upper Bidwell Park, Chico, at the Police Pistol Range. 91 Comment
  CHSC80670  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS122066  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  JEPS94565  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  SEINET10470070  Platanthera sparsiflora Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4757 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC38588  Platanus acerifolia Vernon Oswald 1983-7-21 889 Butte Upper Bidwell Park, Chico, at the n-e edge of the parking lot at the Horse Arena. 79 Comment
  CHSC103113  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS115640  Platanus racemosa Lowell Ahart 2009-8-23 16296 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET10476455  Platanus racemosa Mary Susan Taylor 1975-7-4 Taylor 829 Butte On S side of Big Chico Creek, at Five Mile Dam, Upper Bidwell Park, Chico. 91 Comment
  SEINET10464977  Plectritis ciliosa Lowell Ahart 1984-4-3 Ahart 4538 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
  SEINET10464978  Plectritis ciliosa Mary Susan Taylor 1974-3-19 Taylor 85 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  SEINET10905832  Plectritis congesta subsp. brachystemon Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5236 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC33573  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte 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. 1005 Comment
  CHSC86140  Pleuricospora fimbriolata John Dittes 2002-6-29 628 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
  CHSC83967  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  JEPS110196  Poa bolanderi Lowell Ahart 2006-7-16 12972 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  CHSC61547  Poa palustris Lowell Ahart 1993-6-26 7014 Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC41282  Poa pratensis S. C. Morey 1983-7-21 501 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC64263  Poa pratensis S. C. Morey 1983-8-1 651 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC35630  Poa secunda subsp. secunda R. E. Preston 1982-3-24 197 Butte Ca. 50 ft n of the Skyway, 1/4 mi e of Hwy 99, Chico. At edges of vernal pools. Area advertised for commercial development. 67 Comment
  JEPS108566  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage 1478 Comment
  JEPS117717  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16670 Butte Open rocky flats near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 363 Comment
  CHSC39500  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte Along the trail to the over-look to Feather Falls, about 2 1/2 miles north of the town of Feather Falls. 600 Comment
  UCD169692  Poa sierrae L. P. Janeway 2011-7-18 10515 Butte Northern High Sierra Nevada. Plumas National Forest; along Dome Trail 0.7 km northeast of the trailhead, 1.0 air km southeast of Bald Rock Dome. 725 Comment
  POM70306  Pogogyne douglasii Edward Palmer 1892-6-7 2078 Butte Near Chico. Comment
  JEPS95886  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1999-8-13 8157 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
  SEINET5850115  Polanisia dodecandra var. trachysperma R. R. Halse 2006-8-2 6980 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC46584  Polemonium occidentale V. Oswald; L. Ahart 1989-7-21 3871 Butte Near the junction of Willow and Colby creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. On the west border of the meadow near Humboldt Rd. 1490 Comment
  CHSC75266  Polycarpon tetraphyllum Lowell Ahart 1999-5-24 8080 Butte Sidewalks, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  UCSB64007  Polycarpon tetraphyllum Ahart, Lowell 1978-6-2 Butte Along the edge of North Honcut Creek; Peter Ahart Ranch; about 1 mile north and 3 miles east of Honcut; about 12 miles south of Oroville 39 Comment
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  SEINET11263758  Polygala cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi se of Paradise on Pentz Road.; 0 427 Comment
  JEPS88567  Polygonum amphibium var. emersum Vernon H. Oswald and Lowell Ahart 1996-5-27 7672 Butte U.S. Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (in a ditch between 7 Mile Lane and Tract 6, Sanctuary 2, just n of the equipment parking lot); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC46204  Polygonum aviculare L. P. Janeway 1986-10-19 1940 Butte Wet area along small creek feeding Thermalito Forebay from the NE. Between bay and hwy 99 and just N of the State Park picnic grounds. 67 Comment
  CAS-BOT-BC109143  Polygonum bidwelliae Roger Raiche 1986-5-3 60134 Butte Between Chico and Paradise, Neal Road, ca. 4 miles east of State Route 99. 262 Comment
  CHSC31367  Polygonum bidwelliae C. Glascock 1965-5-11 376 Butte At edge of Skyway 2.5 km s (1.85 mi. s.) of Russell Drive, Paradise. Comment
  UCD80668  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-5 SNFN 0157 d Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  CAS-BOT-BC109153  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit near Butte Meadows. 1463 Comment
  CHSC45857  Polygonum californicum Lowell Ahart 1974-10-18 663 Butte Along the edges of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. Comment
  JEPS115374  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  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
  JEPS113314  Polygonum douglasii subsp. spergulariiforme L. P. Janeway 2006-6-25 8694 Butte Northern High Sierra Nevada. West side of Coutolenc Road about 150 m north of Skyway; at Magalia Serpentine. Comment
  SEINET10479654  Polygonum lapathifolium Lowell Ahart 1990-10-3 Ahart 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 244 Comment
  CAS-BOT-BC419808  Polygonum parryi M. S. Taylor; R. S. Schlising 1980-7-6 3066 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  CAS-BOT-BC419810  Polygonum parryi Lowell Ahart 1982-6-15 3571 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC63717  Polygonum parryi Lowell Ahart 1994-10-9 7555 Butte In a small grassy opening, on the north side of Forbestown road, about 150 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  CDA13842  Polygonum persicaria G. F. Hrusa, T. D. Wilfred 1996-9-5 13570 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  UC465755  Polygonum polygaloides subsp. kelloggii Mrs. R. M. Austin July 1896 283 Butte Colby Comment
  CHSC94486  Polygonum punctatum Lowell Ahart 2006-8-29 13237 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  JEPS108863  Polygonum punctatum 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
  CHSC29018  Polypodium calirhiza M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2430 Butte Ca. 10 ft s of Swedes Flat Rd, at jct with Rocky Honcut Creek, ca. 2 mi e of OrovilleBangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  CHSC4720  Polypodium calirhiza R. Carter 1966-4-28 377 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds up 23N28 on W side of road. 640 Comment
  CAS-BOT-BC232965  Polypogon australis P. B. Kennedy 1915-5-15 s.n. Butte Biggs Comment
  CAS-BOT-BC232968  Polypogon australis A. A. Heller 1913-6-4 10775 Butte Table Mountain Olive Ranch N of Oroville Comment
  CAS-BOT-BC233055  Polypogon interruptus Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC233058  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  HSC97102  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte Gridley, N of Spruce St., 200 ft E of the railroad tracks 28 Comment
  JEPS114960  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  JEPS119521  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SEINET10507584  Polypogon maritimus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4158 Butte T20N R5E se sec 11. Along Ponderosa Way (Big Ridge Rd), ca. 1.5 mi e of its jct with East Fork Canyon Creek, ca. 15.5 mi ne of Oroville. Foothill Woodland. 600 Comment
  CAS-BOT-BC232577  Polypogon monspeliensis John Thomas Howell 1959-9-20 34618 Butte E outskirts of Oroville 60 Comment
  CHSC39348  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 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
  CHSC6126  Polypogon monspeliensis E. Parreno 1968-5-12 99 Butte Left side of Upper Bidwell Rd. before junction with Rd. to Diversion Dam. Chico. Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 209 Comment
  CHSC10673  Polystichum imbricans Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  JEPS124287  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC78231  Polystichum imbricans subsp. imbricans Lowell Ahart 2000-6-27 8528 Butte Along the wash and north of the trail to Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 975 Comment
  UC600570  Polystichum imbricans subsp. imbricans E. B. Copeland 1931-6-10 Butte ridge w of North Willow Creek Jonesville 1650 Comment
  CAS-BOT-BC72299  Polystichum imbricans subsp. imbricans M. S. Taylor 1980-3-19 2388 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville 396 Comment
  CHSC51864  Porterella carnosula L. P. Janeway; R. A. Schlising 1988-7-16 3034 Butte Vernal pool next to Humbug Summit Rd ca 0.8 mi W of Butte Creek House. 1805 Comment
  CHSC51243  Portulaca oleracea Lowell Ahart 1990-7-4 6549 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
  UC478558  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  RSA699698  Potamogeton diversifolius Lowell Ahart 2004-7-11 11226 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  CAS-BOT-BC453685  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CAS-BOT-BC453688  Potamogeton gramineus Vernon Oswald; Lowell Ahart 1987-7-1 3076 Butte Ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi. (air) se of Jonesville. 1935 Comment
  CHSC33656  Potamogeton natans R. Schlising; J. Fuller, M. Merryman, K. Tarp 1981-7-28 4175 Butte N of Inskip in NE part of county; Coon Hollow; in pond. 1752 Comment
  CHSC34127  Potamogeton natans L. Ahart 1981-9-21 3198 Butte Along French Creek, ca. 100 m w of where the road crosses French Creek, ca. 1 mi w of the Sly Creek Reservoir. In a pond above the swamp. 1300 Comment
  CHSC51953  Potamogeton natans L. P. Janeway 1987-6-8 2166 Butte Along French Cr across from mouth of Ram Cr. Pond. 617 Comment
  CHSC11798  Potamogeton pusillus var. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville. 1650 Comment
  UCR190829  Potentilla glandulosa 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
  SEINET9798146 Image available Proboscidea louisianica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC66305  Proboscidea louisianica subsp. louisianica Vernon H. Oswald 1996-6-20 7834 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing on the edge of a marshy drainage on the dry bed of seasonal marsh at the NW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC1065  Proboscidea lutea E. Walker 1941-9-6 Butte Oroville road. 60 Comment
  UC139772  Prunella vulgaris var. lanceolata Mrs. R. M. Austin July 1896 566 Butte Colby Comment
  CHSC110039  Prunus cerasifera Lowell Ahart 2012-10-28 18536 Butte On the north side of the paved park road, north of the bridge across Big Chico Creek, north of the Deer Pen, northeast of Cedar Grove, Lower Bidwell Park, Chico. 74 Comment
  CHSC5951  Prunus cerasifera M. MacArthur 1968-6-17 177 Butte In hedge ca. 30 ft. SW of SW entrance of Life Science bld., Chico State College campus. 60 Comment
  CHSC92542  Prunus subcordata L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8362 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  SEINET10475242  Pseudobahia heermannii Mary Susan Taylor 1980-4-1 Taylor 2423 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 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
  CHSC31586  Pseudognaphalium luteoalbum L. Ahart 1975-7-19 897 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 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
  CHSC42465  Pseudognaphalium stramineum Lowell Ahart 1987-5-6 5501 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC77980  Pseudognaphalium stramineum Lowell Ahart 2000-5-13 8346 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS119592  Pseudotsuga menziesii var. menziesii Lowell Ahart 2012-2-22 17737 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC103718  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-14 16649 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  UC1609224  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch Comment
  JEPS87528  Psilocarphus tenellus Lowell Ahart 1993-7-6 7049 Butte about 1/4 mi w Lost Creek Reservoir (s side of dirt rd) 1036 Comment
  UC109312  Ptelea crenulata Mrs. R. M. Austin jun 1879 263 Butte Comment
  UC1602323  Ptelea crenulata J. E. Sowder 1933-7-7 110 Butte Camel Mound; Chico Quad. 609 Comment
  UCR231083  Pteridium aquilinum Anna M. Hurlbutt 2009-8-7 020 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  UCD137841  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte Sierra foothills near Forest Ranch. Comment
  CDA13287  Pterospora andromedea G. F. Hrusa, T. D. Wilfred 1996-7-9 13135 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  POM132116  Pterospora andromedea Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC101310  Pterostegia drymarioides Lowell Ahart 2009-4-22 15588 Butte West of the Guardians Trail, along the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  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
  CHSC20527  Pyracantha koidzumii Pamela Caldwell 1971-10-8 Butte CSUC campus. Bordering front lawn of Administration Bldg. Comment
  CHSC48675  Pyrola aphylla Vernon Oswald 1987-7-13 3106 Butte Near Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  JEPS108897  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  UC195370  Pyrola picta A. A. Heller 1914-7-23 11597 Butte Chico Meadows 1219 Comment
  SEINET8371774  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  SEINET10449204  Pyrola picta f. aphylla Mary Susan Taylor 1977-6-25 Taylor 1387 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC105030  Quercus X morehus Lowell Ahart 1976-7-15 s.n. Butte Near edge of North Honcut Creek, 2 miles N and 3 miles E of Honcut 200 Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 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
  CHSC104826  Quercus douglasii Lowell Ahart 2010-6-1 16762 Butte On the north side of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 172 Comment
  CAS-BOT-BC86119  Quercus dumosa P. C. Everett; E. K. Balls 1959-10-20 23907 Butte 8.6 miles NE from Chico along State Hwy. 32, toward De Sabla 487 Comment
  CHSC75375  Quercus kelloggii Lowell Ahart 1999-6-12 8084 Butte Label says 'T20N R04E S08 SW1/4, close to the border with Section 7'. Above the rim of the south branch of Coal Canyon, North Table Mountain, about one mile (air) northwest of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 365 Comment
  JEPS113184  Quercus kelloggii Lowell Ahart 2007-5-16 13890 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
  UCD46667  Quercus kelloggii K. D. Jones 1927-9-10 1707 Butte California Black Oak. Calistoga-Wrights, Napa County, California. Comment
  CHSC100493  Quercus lobata Lowell Ahart; John Dittes 2008-11-14 15450 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  LA16863  Quercus lobata C. B. Wolf; E. R. Johnson 1931-6-28 6162 Butte 3 mi out of Chico 60 Comment
  CHSC26694  Quercus vacciniifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1470 Butte On s side of Humboldt Rd, ca. 3 mi e of its jct with Scott's John Rd, n of Jonesville. 1828 Comment
  UC5708  Quercus wislizeni W. H. Brewer 1862-10-17 1472 Butte Table Mountain, Oroville Comment
  UC1135915  Quercus wislizeni var. frutescens J. E. Sowder 1933-8-4 124 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  UC1562480  Ranunculus alismifolius var. alismifolius Vernon Oswald and Lowell Ahart 1990-5-29 4268 Butte e side of Humbug Rd ca 3.5 air mi ese Jonesville; Butte Creek House Meadow 1777 Comment
  CDA38800  Ranunculus arvensis L. Ahart 2012-5-2 17961 Butte About 30 yards east of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  RSA0036029  Ranunculus arvensis Lowell A. Ahart 2012-5-2 17961 Butte About 30 yards northeast of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 91 Comment
  UCD80704  Ranunculus canus var. canus CNPS SN Foothill Team 2005-3-30 SNFN 0070 d Butte CDFG, North Table Mountain Wildlife Area, in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Road. 306 Comment
  SEINET10535975  Ranunculus hystriculus Mary Susan Taylor 1980-2-17 Taylor 2367 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC79557  Ranunculus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1997-5-1 13718 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. 775 Comment
  CHSC31855  Ranunculus pusillus L. Ahart 1980-5-10 2235 Butte In farmed field, ca. 2.5 mi n and 1/10 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45514  Ranunculus pusillus Lowell Ahart 1974-4-28 445 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  SEINET10907334  Raphanus sativus Mary Susan Taylor 1975-3-25 Taylor 422 Butte Chico. Comment
  POM94326  Raphanus sativus C. C. Bruce 1897-04 1941 Butte [No locality information provided] Comment
  CHSC75529  Rhamnus crocea G. F. Hrusa; T. D. Wilfred 1997-5-8 13743 Butte Uncommon on serpentine slope facing E above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. 740 Comment
  CAS-BOT-BC59878  Rhamnus ilicifolia John Thomas Howell; Gordon H. True 1968-5-13 44334 Butte Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau. 1463 Comment
  CAS-BOT-BC59888  Rhamnus ilicifolia P. Monnet 1913-3-1 683 Butte Feather River Canyon. Oroville. Comment
  CHSC46396  Rhamnus ilicifolia Lowell Ahart 1989-5-29 6303 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road. 670 Comment
  UC1121072  Rhododendron occidentale C. G. Albertus 1933-7-5 41 Butte 2 mi se of Promontory Point 1066 Comment
  CAS-BOT-BC168127  Rhus aromatica Lowell Ahart 1983-4-10 3927 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC20055  Rhus aromatica M. S. Taylor 1975-4-25 505 Butte Scattered on Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  CAS-BOT-BC111923  Rhynchospora glomerata var. minor Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  CHSC96232  Ribes amarum R. Fischer 2006-4-25 998 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing the southern end of reserve on the north facing, densely brushy hillside in one of the seasonal stream drainages/ravines. 304 Comment
  SFV10395  Ribes amarum M. L. Vincent 1965-4-14 613 Butte Sierra Nevada Skyway, 1.5 miles north of Magalia. 760 Comment
  UC129470  Ribes nevadense Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  CHSC90093  Ribes roezlii Rebecca L. Hill 1990-4-21 19 Butte Ca. 2 mi e on Humboldt Rd., ca. 150 yds on side of road. Ca. 2.5 mi sw of Butte Meadows an ca. 27 mi ne of Chico. 1310 Comment
  SBBG17303  Ribes roezlii M. Vincent 1962-4-15 183 Butte 1 mi S of Stirling City on the Skyway Comment
  UC436295  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UC725920  Ribes roezlii A. A. Heller 1939-4-26 15384 Butte at foot of the grade leading down from Stirling City 914 Comment
  SEINET12216578  Ribes roezlii M. R. Nichols 1975-1 14 Butte 6.8 mi NE of Chico on Cohasset Rd from Chico Airport 579 Comment
  RSA0020891  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville. 2134 Comment
  CHSC42389  Rigiopappus leptocladus Lowell Ahart 1979-5-29 1905 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  RSA0035336  Robinia pseudoacacia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18002 Butte On the east side of the horse path, about 20 yards north of the paved park road, southwest part of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC101266  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  JEPS115290  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  JEPS103453  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2002-10-17 9988 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC113299  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-4-9 19345 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC96825  Rorippa curvisiliqua var. orientalis Lowell Ahart 2007-5-29 13934 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CHSC98950  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-8 14713 A Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  JEPS120598  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-11-17 19260 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC35645  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 229 Butte Western Canal, at jct with the Midway ca. 0.75 mi s of Nelson. 35 Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  JEPS103498  Rosa eglanteria Lowell Ahart 2002-5-15 9660 Butte 100 yds SW of Parking Lot 10, 100 yds NE of the buildings, S side of dirt road, Gray Lodge State Wildlife Management Area, 4 mi SW of Gridley 22 Comment
  SEINET10483514  Rosa gymnocarpa Mary Susan Taylor 1980-5-27 Taylor 2733 Butte On N side of Bald Rock Road, ca. 0.5 mi E of its jct with Oroville-Quincy Hwy, ca. 0.5 mi S of Lake Madrone; granitic soils. 701 Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS94876  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  JEPS107939  Rosa pisocarpa subsp. ahartii Lowell Ahart 2005-7-13 12144 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 748 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  SEINET10498793  Rosmarinus officinalis Mary Susan Taylor Taylor 449 Butte Campus of the California State University, Chico. 61 Comment
  CDA5118  Rotala indica G. D. Barbe, C. Wick, June McCaskill 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs. 0 Comment
  CDA5119  Rotala indica G. D. Barbe, June McCaskill 1990-9-5 4369 a Butte Experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. 0 Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs 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
  CHSC45810  Rubus armeniacus L. P. Janeway 1987-5-7 2019 Butte Along Little Chico Cr at the powerlines; near Stilson Cyn Rd 0.8 mi east of Bruce Rd. 88 Comment
  CAS-BOT-BC156608  Rubus bifrons Lowell Ahart 1984-6-10 4716 Butte About 1/2 mile south-east of the Forbestown Diversion Dam, north-east of Forbestown 450 Comment
  NY43611  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  CAS-BOT-BC147202  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  SEINET5735589 Image available Rubus parviflorus Lowell Ahart, Peter Ahart 1984-1 4695 Butte About 2 mi. SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest.; Forbestown 700 Comment
  CHSC88086  Rubus pensilvanicus R. D. Fischer 2004-4-18 171 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located w. side Big Chico Creek near beginning Yahi Trail. UTM: 10605280E 4402910N. 91 Comment
  UCD166757  Rubus praecox Marcel Rejmanek 2016-10-6 2159 Butte A ditch by the Highway 99, ca 1 km S of Nelson Ave. Comment
  SEINET10483604  Rubus procerus Mary Susan Taylor 1980-6-7 Taylor 2792 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  CHSC48874  Rubus ursinus Vernon Oswald 1987-6-4 2953 Butte East arm of Paradise Reservoir near Doon Creek. 777 Comment
  JEPS119753  Rubus ursinus Lowell Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC6574  Rudbeckia hirta var. pulcherrima R. Carter 1966-7-10 485 Butte Found 1 mi. S Butte-Plumas Co., line along W side Oroville-Quincy Rd., in field. 1371 Comment
  CAS-BOT-BC422139  Rumex californicus Lowell Ahart 1988-6-28 6081 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut 39 Comment
  CHSC116294  Rumex conglomeratus Lowell Ahart 2015-10-16 20554 Butte On west side of Feather River, about half way of and east of ne Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CAS-BOT-BC421733  Rumex conglomeratus Lowell Ahart 1982-6-27 3653 Butte About 2 1/4 miles north and 1/4 mile east of Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC421735  Rumex conglomeratus John Thomas Howell 1959-9-20 34623 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC421617  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC111171  Rumex fueginus Lowell Ahart 2013-6-18 18804 Butte Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. About 60 yards west of Parking Lot 14. 19 Comment
  CHSC51275  Rumex salicifolius var. denticulatus Lowell Ahart 1990-10-3 6619 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. 259 Comment
  CAS-BOT-BC434069  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CAS-BOT-BC434168  Rumex triangulivalvis Lowell Ahart 1984-6-8 4675 Butte About 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 475 Comment
  JEPS118328  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  SEINET10537649  Sagina apetala var. barbata Mary Susan Taylor 1978-4-14 Taylor 1563 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC98805  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 238 Comment
  CHSC112722  Sagina saginoides Lowell Ahart 2013-10-26 19211 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC26812  Sagittaria montevidensis subsp. calycina M. S. Taylor 1978-5-7 1606 Butte In irrigation ditch in Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC80532  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  UC2026859  Salix babylonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC102800  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  UC846523  Salix exigua var. hindsiana A. A. Heller 1915-5-16 11870 Butte 3 mi from Chico (Chico-Centerville rd.) Comment
  LA208672  Salix geyeriana E. B. Copeland; 1931-6-10 sn Butte by Butte Creek; Jonesville 1500.0 Comment
  CHSC113289  Salix gooddingii Lowell Ahart 2014-4-9 19346 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC35988  Salix gooddingii J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1559 Butte 2.5 airline miles E of Forbestown, Road to Forbestown Resv. At this Jct. With unnamed creek. Comment
  CAS-BOT-BC104077  Salix hindsiana Peter H. Raven 1953-5-9 5450 Butte 6.5 miles from Bangor on road to Oroville Comment
  CAS-BOT-BC106936  Salix laevigata Lowell Ahart 1987-5-22 5684 Butte near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  JEPS120008  Salix lasiandra var. lasiandra Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC106984  Salix lasiolepis Lowell Ahart 1987-4-30 5492 Butte 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
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC129624  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36779 Butte Jarbo Gap, Feather River Highway - Sierra Nevada 60 Comment
  POM219070  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. Massed about the 'Lily Pond' 1700 Comment
  LA208870  Salix melanopsis E. B. Copeland; 1931-6-10 sn Butte by Butte Creek; Jonesville 1500.0 Comment
  CHSC9691  Salix nigra E. L. Smith 1971-9-12 1063 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CAS-BOT-BC221115  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte Near Cohasset 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
  SD6666  Salvia sonomensis Mrs. R. M. Austin Butte Comment
  CAS-BOT-BC235067  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  CHSC43264  Samolus parviflorus Lowell Ahart 1987-9-4 5884 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC23533  Sanicula bipinnata M. S. Taylor 1976-3-9 1021 Butte Ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC24935  Sanicula bipinnata Brad R. Parker 1976-3-20 2 Butte Ca. 10.8 mi nne of Chico, ca. 150 yds off the nw side of the Skyway, below a volcanic mudflow cliff. 259 Comment
  CHSC31896  Sanicula bipinnata L. Ahart 1974-3-18 325 Butte Along North Honcut Creek; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38747  Sanicula bipinnata Vernon Oswald 1983-2-23 99 Butte Upper Bidwell Park, Chico, on the north slope ca 1600 ft n of Upper Park Rd. and 300 ft w of the power lines. 152 Comment
  JEPS108822  Sanicula bipinnatifida var. flava Lowell Ahart 2006-5-8 12601 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  CHSC96828  Sanicula graveolens Lowell Ahart 2007-5-29 13950 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  RSA4229  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1500 Comment
  SEINET10454585  Sanicula tuberosa Mary Susan Taylor 1978-7-19 Taylor 1775 A Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  JEPS105598  Sapium sebiferum Gavin Blosser 2003-10-23 Butte Northern Sierra Nevada Foothills; between Bidwell Canyon Drive and Lake Oroville, 440 ft S of Arroyo Drive and 2200 ft SW of Bidwell Canyon Campground 283 Comment
  CHSC42388  Saponaria officinalis Lowell Ahart 1987-6-9 5725 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
  CAS-BOT-BC436854  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC858207  Saxifraga oregana A. A. Heller 1914-6-22 11493 Butte Chico meadows Chico 1219 Comment
  CHSC29015  Scandix pecten-veneris M. S. Taylor; J. D. Jokerst 1980-4-4 2461 Butte On w side of La Porte Rd, ca. 2 mi n of Bangor. 335 Comment
  CAS-BOT-BC111374  Schoenoplectus acutus var. occidentalis Lowell Ahart 1981-8-31 3061 Butte Wyandotte Lake, E or Oroville. 450 Comment
  POM312841  Schoenoplectus glaucus H. L. Mason, Verne Grant 1946-8-7 12991 Butte Gridley road N of Butte Sink. Comment
  CHSC110324  Schoenoplectus tabernaemontani B. Castro; Margie Graham 2006-9-7 1611 Butte Sacramento Valley. 1.3mi W of Highway 99 and 2 mi NE of Richvale and ca 1.2mi N of Richvale Hwy in Cherokee Canal.. On W side of main channel, on grassy terrace ca 50 ft from water in channel. 35 Comment
  CHSC56797  Scirpus congdonii L. P. Janeway 1987-6-20 2270 A Butte Along road to Fall River and Cascade, 1.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1143 Comment
  CDA2622  Scirpus glaucus Margaret Bellue 1947-8-23 Butte Barman Ranch, near Biggs. 0 Comment
  CHSC56813  Scirpus microcarpus L. P. Janeway 1987-7-4 2414 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CAS-BOT-BC239957  Scribneria bolanderi Ahart; Jokerst 1985-5-10 4959 Butte 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 350 Comment
  JEPS104427  Scrophularia californica subsp. floribunda Lowell Ahart 2003-4-10 10087 Butte Under the government pole line, below the south rim of South Table Mountain, ca 1 3/4 mi n of Oroville. 211 Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  CHSC102849  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards south 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. 436 Comment
  JEPS120940  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 air miles SW of Forbestown. Comment
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CHSC31089  Sedella pumila Robert A. Boer 1980-4-25 19 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
  CHSC458  Sedella pumila P. Delaplane 1965-3-16 2 Butte E. of US 99 ca. 14 mi. N. Chico. 30 Comment
  CAS-BOT-BC415024  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville road, about 7 miles from Chico Comment
  UCD101999  Sedella pumila Sue Wagener 1955-4-24 46 Butte Elliot Spring Memorial on the Durham-Paradise Road. Comment
  CAS-BOT-BC63852  Sedum spathulifolium Helen M. Edwards 1917-6-6 s.n. Butte De Salbla Comment
  CHSC28875  Selaginella hansenii J. D. Jokerst; M. S. Taylor 1980-2-14 42 Butte Along E side of Lumpkin Rd ca 200 m N of its jct with McCabe Cr. Comment
  RSA638250  Selaginella hansenii Michael A. Vincent, Ethan H. Freid 1998-4-6 8116 Butte Table Mountain Comment
  HSC81460  Selaginella hansenii M. Mesler, Karen Lu 1984-3-24 Butte Road between Chico and Paradise Comment
  CHSC30693  Selaginella wallacei M. S. Taylor 1980-5-27 2666 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  SD5873  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  UC174133  Senecio integerrimus var. exaltatus T. S. Brandegee 1892-6-29 Butte Jonesville Comment
  CAS-BOT-BC363995  Senecio integerrimus var. major Lowell Ahart 1982-5-8 3410 Butte About 1/2 mile south-west of the Forbestown Res. 800 Comment
  CHSC104757  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC116206  Senecio sylvaticus Lowell Ahart 2015-7-4 20269 Butte Clear cut area on the south side of the County Road, about 3/4 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. 1270 Comment
  CHSC42468  Senecio sylvaticus Lowell Ahart 1987-5-6 5564 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD146245  Senecio sylvaticus Daniel S. Park; D. Potter, J. J. Petersen 2010-4-10 14 Butte Table Mt. near creek. 335 Comment
  CHSC43199  Senecio triangularis Robert Banchero 1981-7-19 608 Butte 0.3 mi s of Balt Mt look-out Tower, on Bald Mt. Meadow. 1688 Comment
  UC492745  Senecio triangularis H. F. Copeland 1928-8-17 Butte Jonesville Comment
  CHSC113379  Senecio vulgaris Lowell Ahart 2014-4-9 19329 Butte Rice field road, near the pump, on the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC113926  Senecio vulgaris Lowell Ahart 2014-4-16 19358 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC4118  Senecio vulgaris R. Carter 1966-4-2 325 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC3243  Sequoia sempervirens Virginia Hagaman 1966-2-21 24 Butte Chico State College Campus. Comment
  SEINET10872005  Sericocarpus oregonensis subsp. californicus Mary Susan Taylor 1980-9-12 Taylor 3328 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CDA31826  Sesbania punicea C. Owens 2010-7-28 s.n. Butte Edge of Feather River at River Bend Park, Oroville. 0 Comment
  CAS-BOT-BC240122  Setaria pumila John Thomas Howell 1959-9-20 34680 Butte Eastern outskirts of Oroville 60 Comment
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  JEPS76248  Setaria pumila W. L. Jepson 1939-8-17 19456 Butte Reather R. bottom near Oroville; Reather R. 45 Comment
  UCD92713  Setaria pumila L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  SEINET10507784  Setaria sphacelata Lowell Ahart 1985-10-12 Ahart 5199 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC25051  Sherardia arvensis G. N. Steger 1972-4-15 Butte At edge of Cherokee road about 4 mi S of Cherokee, on North Table Mt. 396 Comment
  CHSC34225  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70 (Feather River Hwy), ca. 4 air mi NW of Oroville. (center of sec 26). 91 Comment
  CHSC70854  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  SEINET10500673  Sherardia arvensis Mary Susan Taylor 1981-5-1 Taylor 3585 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
  UC1013146  Sidalcea asprella C. L. Hitchcock 1952-5-28 19537 Butte 6 mi w Forbestown (Oroville-Forbestown Road) Comment
  JEPS127019  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  CHSC24938  Sidalcea calycosa Kimberly J. Weir 1976-4-15 5 Butte Ca. 1 mi s of Big Chico Creek and 1.5 mi ene of Chico, 20 ft n of Humboldt Road. 60 Comment
  SEINET10937539  Sidalcea calycosa Mary Susan Taylor 1975-10-4 Taylor 956 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CAS-BOT-BC213188  Sidalcea robusta A. A. Heller 1940-4-28 15564 Butte Ridge above chico Creek opposite the Golf Links east of Chico Comment
  CHSC48265  Silene bernardina Vernon Oswald 1985-7-21 1909 Butte Jones Meadow Rd. ca. 0.1 mi s of its jct. with the dirt road coming in from Inskeep, ca. 0.7 air mi wnw of Jones Meadow Lake. On the edge of the road. 1737 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
  CHSC212  Silene bridgesii V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  UC852813  Silene californica Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  CAS-BOT-BC387073  Silene gallica A. A. Heller 1914-4-24 11319 Butte Hills 8 miles N of Oroville Comment
  CHSC84918  Silene laciniata subsp. californica Janice Morris 1995-4-24 90 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  UCSB63726  Silene laciniata subsp. californica 1986-4-19 Butte 11.5 m. N of Chico Municipal Airport on Cohasset Hwy. 853 Comment
  CHSC44513  Silene lemmonii Lowell Ahart 1988-6-29 6105 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  CHSC48268  Silene lemmonii Vernon H. Oswald 1983-8-17 982 Butte Humboldt Summit on Humboldt Rd, ca. 3.3 mi ne of Jonesville, at the junction of Butte, Tehama, and Plumas counties. 1999 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC52013  Silene lemmonii L. P. Janeway 1988-6-25 2880 Butte Logged slopes above the creek along Bull Hill Rd 2.2 mi from the Skyway. 1508 Comment
  UC120147  Silene lemmonii unknown Butte Jonesville Comment
  CAS-BOT-BC181358  Silene occidentalis A. A. Heller 1917-7-26 12820 Butte Butte Meadows 1402 Comment
  SEINET3070885 Image available Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 s.n. Butte Jonesville 1550 Comment
  CHSC80519  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC38414  Sinapis arvensis Vernon Oswald 1983-3-31 247 Butte Upper Bidwell Park, Chico, ca. 100 ft e of the parking lot at Day Camp. 91 Comment
  CHSC38871  Sisyrinchium bellum Vernon Oswald 1983-3-31 229 Butte Upper Bidwell Park, on the s side of Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 152 Comment
  SEINET10508343  Sitanion hystrix var. brevifolium Mary Susan Taylor 1979-7-21 Taylor 2158 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  RSA26487  Smilax californica C. Dudley 1940-06 s.n. Butte Near Magolia. Comment
  CHSC8621  Solanum parishii L. V. Ritter 1969-4-29 207 Butte 4.2 mi. se of Chico, s side of Humbug Rd. Comment
  JEPS124172  Solanum parishii Lowell Ahart 2015-3-14 19946 Butte Beastson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  NY821149  Solanum parishii E. B. Copeland 1930-7-27 453 Butte Jonesville Comment
  UC1125062  Solanum umbelliferum C. G. Albertus 1933-6-26 32 Butte 1/2 mi s of Nelson's Bar 365 Comment
  SEINET10581086  Solanum umbelliferum Lowell Ahart 1987-5-22 Ahart 5674 Butte N of Lumpkin Ridge Road, 1 1/2 mi E of Camp 18, about 8 mi NE of Feather Falls 1280 Comment
  CAS-BOT-BC364935  Solidago velutina subsp. californica A. A. Heller 1916-9-23 12662 Butte Sierra Foothills near Forest Ranch Comment
  CAS-BOT-BC364938  Solidago velutina subsp. californica Lowell Ahart 1982-9-12 3799 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC26703  Solidago velutina subsp. californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1455 Butte On both sides of Hwy 32, ca. 6 mi s of Forest Ranch. 609 Comment
  SEINET10474959  Soliva pterosperma Mary Susan Taylor 1979-5-6 Taylor 2006 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC113916  Sonchus asper subsp. asper Lowell Ahart 2014-5-13 19462 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC158896  Sorbus scopulina Lowell Ahart 1982-9-13 791 Butte Near 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
  CHSC34818  Spergularia rubra M. S. Taylor 1981-5-27 3804 A Butte In path, nw end of Paradise Lake near old barn, ca. 3 air mi n of Magalia. 792 Comment
  CHSC35000  Spergularia rubra R. A. Schlising 1980-7-7 3844 Butte Several miles NE of village of Feather Falls, 0.2 mi N of Lumpkin-La Porte Road, on road to Fall River Campground. Roadside. 1158 Comment
  CAS-BOT-BC390597  Spergularia rubra John Thomas Howell 1962-6-16 37585 Butte 3.5 mi. n. of Pentz 396 Comment
  SEINET10833464  Spergularia rubra Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4707 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC42793  Spiraea densiflora subsp. densiflora L. P. Janeway 1987-6-27 2331 Butte Along Little Kimshew Cr just N of Ramsey Bar. Site of old Ramsey Bar mining and timber center. 1341 Comment
  CHSC43736  Spiraea douglasii Vernon Oswald 1983-7-6 821 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. In a meadow. 1325 Comment
  CHSC28171  Stachys ajugoides var. rigida J. D. Jokerst 1979-8-12 318 Butte 1.0 mi. W. of W. Branch Feather River along creek. 853 Comment
  CHSC31792  Stachys stricta L. Ahart 1977-6-3 1402 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC61637  Stellaria borealis subsp. sitchana Lowell Ahart 1993-9-13 7230 Butte On the bottom and edges of washes along Bolt Creek, along the edges of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609347  Stellaria borealis subsp. sitchana Lowell Ahart 1993-9-13 7230 Butte about 1 mi se Butte Meadows; Bolt Creek 1325 Comment
  UC392217  Stellaria borealis subsp. sitchana E. B. Copeland Jul 1929 Butte Jonesville 1500 Comment
  CAS-BOT-BC181379  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow 1889 Comment
  CHSC61310  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte On the west side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC35036  Stellaria longipes var. longipes R. A. Schlising 1980-6-8 3869 Butte NE of Butte Meadows and SW of Jonesville, along Humboldt Road to the W of Cherry Hill Campground. At meadow margin. 1402 Comment
  CHSC63810  Stellaria longipes var. longipes S. C. Morey 1983-8-1 665 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC478520  Stellaria longipes var. longipes E. B. Copeland 1931-6 638 Butte Joneville Jonesville 1500 Comment
  CDA42900  Stellaria media L. Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC39071  Stellaria media R. A. Schlising 1983-3-20 4399 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99 and across from Thermalito Afterbay. Near fences. Comment
  CAS-BOT-BC61284  Streptanthus cordatus var. cordatus A. A. Heller 1914-6-22 11483 Butte Little Summit near Butte Mountains. 1463 Comment
  CAS-BOT-BC61285  Streptanthus cordatus var. cordatus John Thomas Howell 1955-6-14 30467 Butte Near Magalia. 731 Comment
  CHSC93961  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CAS-BOT-BC87439  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Powerhouse Road, about 0.1 mile north of the bridge across the North Fork of the Feather River. 365 Comment
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  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  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-BC87510  Streptanthus tortuosus Lowell Ahart 1987-5-9 5597 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. 365 Comment
  CAS-BOT-BC87512  Streptanthus tortuosus Lowell Ahart 1982-6-4 3541 Butte 1.5 mile east of Camp 18, about 8 miles east of Feather Falls. 1000 Comment
  SEINET10448527  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2714 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC92593  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 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
  CHSC95073  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  UC856777  Streptanthus tortuosus var. orbiculatus A. A. Heller 1938-4-14 15031 Butte low rock ledges where shallow ravines cut through the lava rock on flat mt. summit Table Mountain Comment
  CDA25189  Streptanthus tortuosus var. suffrutescens L. Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC61357  Streptopus amplexifolius var. americanus Lowell Ahart 1993-7-22 7088 Butte West of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC46698  Subularia aquatica var. americana V. Oswald; L. Ahart 1989-8-22 3953 Butte Summit Lake on the n slope of Snow Mtn, ca. 4 mi (air) se of Jonesville. Along the nw edge of the lake. 1889 Comment
  CHSC116339  Symphyotrichum chilense Lowell Ahart 2015-11-18 20657 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
  CAS-BOT-BC99046  Symphyotrichum cusickii John Thomas Howell 1961-9-22 36791 Butte Sierra Nevada - North Fork Feather River at ARch Rock Tunnel Comment
  CAS-BOT-BC98058  Symphyotrichum lentum John Thomas Howell 1959-9-20 34685 Butte eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC98087  Symphyotrichum spathulatum H. F. Copeland 1920-8-20 213 Butte Butte Creek meadow Comment
  JEPS124195  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20550 Butte About 100 yards east of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC99671  Symphyotrichum spathulatum var. yosemitanum R. A. Schlising 2006-8-16 4465 Butte East of Jonesville and east of Snag Lake, at Summit Lake. In open areas around lake. 1889 Comment
  CHSC85441  Symphyotrichum subulatum var. parviflorum R. D. Fischer; Jenny Marr 2003-10-25 12 Butte Chico. Located in northeast corner of town on the west side of Ceanothus Ave, cross street Brenni. Along drainage channel. 70 Comment
  CHSC35305  Tamarix gallica R. Ondricek 1977-10-16 Butte Ca. 1 mile from Richardson Springs turnoff on Cohasset Hwy, N of Chico Comment
  CHSC82625  Tamarix parviflora Tara Morgan 2002-4-1 20 Butte On the west side of the Sacramento River south of Hamilton City. All along Stoney Creek at this location. 52 Comment
  JEPS120944  Tamarix parviflora Lowell Ahart 2013-4-20 18547 Butte Wilson Creek, about 40 yards SW of the oak trees, about 1/2 mile N of the barn, about 3/4 mile N of the Honcut Cemetery, about 3.75 air miles NE of Honcut. Comment
  CHSC111125  Taraxacum erythrospermum Lowell Ahart 2012-5-14 18044 Butte Along the edges of the paved road, between Tables 7 and 8, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC34796  Tauschia kelloggii M. S. Taylor 1981-5-15 3754 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  UC1348836  Taxus brevifolia R. Cockrell 1938-9-21 8415 Butte Stirling City Comment
  CHSC52371  Tellima grandiflora L. P. Janeway 1989-5-17 3253 Butte Along rd to Forbestown Diversion Dam 2.9 mi from Forbestown Rd. Shady cyn with creek flowing n'ly to S Fk Feather River. 792 Comment
  RSA32873  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Butte County: Mosquito Creek betw Appleton and Coutolence. 610 Comment
  CHSC8565  Tetrapanax papyriferus M. MacArthur 1968-6-16 338 Butte E end of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CAS-BOT-BC392314  Thalictrum fendleri A. A. Heller 1914-8-8 1669 Butte At Jonesville 1524 Comment
  CHSC111385  Thalictrum fendleri var. polycarpum Lowell Ahart 2012-4-30 17946 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  HSC64129  Thysanocarpus curvipes J. P. Smith 1973-3-22 5921 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  SEINET11991654  Thysanocarpus curvipes J. J. Krajanowski 1981-1 12 Butte Table Mountain, 0.5 mi W of Cherokee Rd, 6 mi N of Oroville 360 Comment
  UCD115668  Thysanocarpus curvipes Robert E. Preston 1988-4-15 589 Butte 6 miles N of Oroville, Table Mountain, near the head of the S fork of Coal Canyon. 373 Comment
  CHSC36700  Thysanocarpus curvipes var. curvipes Jan Rumore 1982-4-15 2 Butte Ca. 1.2 mi e of Forest Ranch, 50 ft. below top of canyon wall. Upper canyon. 670 Comment
  JEPS104018  Thysanocarpus curvipes var. elegans Lowell Ahart 2003-4-10 10066 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CAS-BOT-BC67299  Thysanocarpus radians A. A. Heller 1928-3-12 14481 Butte Near the Hooker Oak east of Chico. Comment
  CHSC24132  Thysanocarpus radians D. Hattem 1976-4-10 20 Butte Population ca. 100 m n of Big Chico Creek, ca. 1/2 mi e of e boundary of Upper Bidwell Park, ca. 10.7 mi e of Chico. 304 Comment
  CHSC29032  Thysanocarpus radians J. D. Jokerst 1980-3-27 521 Butte Ca 1/2 mi N of Chico Municipal Airport, E of Cohasset Hwy. 97 Comment
  SEINET10449703  Tillaea erecta Mary Susan Taylor 1978-4-14 Taylor 1552 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
  RSA190691  Torilis arvensis T. C. Fuller 1967-6-27 16033 Butte N side of Durham Hwy., 1.1 mi. W of Hwy 99, 0.2 mi E of Hamlin Rd., Durham Comment
  UCD128154  Torilis arvensis T. C. Fuller 1967-6-27 16033 Butte north side of Durham Highway, 1.1 miles west of Highway 99, 0.2 mile eas of Hamlin Roadm Durham. Comment
  CDA42890  Torilis arvensis subsp. purpurea L. Ahart 2012-6-2 18130 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC38751  Torilis arvensis subsp. purpurea Vernon Oswald 1983-5-21 516 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  CHSC50640  Torilis arvensis subsp. purpurea Lowell Ahart 1990-5-25 6490 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across lake Oroville. 271