Search Results — 2000 specimen records retrieved (1609 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/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73554  Abies concolor A. A. Heller 1917-7-26 12849 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC73491  Abies magnifica H. F. Copeland 1938-8-7 s.n. Butte Jonesville - at summit of Humboldt Road. 2133 Comment
  CAS-BOT-BC330577  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling Comment
  NY43528  Acer circinatum S. Bianco 1995-9-17 1026 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  UC624910  Acer circinatum Fred H. Schumacher September 1934 Butte near Butte Meadows; near Butte Meadows Comment
  CAS-BOT-BC330627  Acer glabrum var. glabrum H. F. Copeland 1929-6-11 s.n. Butte Jonesville, near Butte Creek Comment
  CHSC99656  Acer negundo var. californicum H. Koeth 2007-4-12 Butte Chico State Campus, south of Holt Hall in riparian zone. 57 Comment
  CHSC20504  Acer saccharinum M. S. Taylor 1975-5-6 555 Butte Ca. 100 ft e of Little Cafeteria, on s side of Big Chico Creek, California State University, Chico. 60 Comment
  JEPS108565  Achnatherum lemmonii L. P. Janeway 2005-5-29 8415 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga 960 Comment
  CHSC111347  Achyrachaena mollis Lowell Ahart 2012-5-2 17951 Butte On damp dark clay soil, 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  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
  CHSC100491  Acmispon americanus var. americanus Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15439 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC28528  Acmispon americanus var. americanus M. S. Taylor 1979-8-4 2171 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  JEPS121914  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC34227  Acmispon argophyllus var. fremontii M. S. Taylor 1981-5-7 3628 Butte Decomposed granite, n side of Ponderosa Way, ca. 0.8 mi n of the Sucker Creek bridge ca. 4 air mi sw of Feather Falls. 365 Comment
  CAS-BOT-BC204851  Acmispon argophyllus var. fremontii Lowell Ahart 1983-6-26 4162 Butte Along Bean Creek Road, about 2 miles south of LIttle Bald Rock, about 19 miles north-east of Oroville 800 Comment
  CHSC45908  Acmispon brachycarpus Lowell Ahart 1981-4-24 2786 Butte Growing near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC113908  Acmispon parviflorus Lowell Ahart 2014-5-8 19450 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CAS-BOT-BC391377  Aconitum columbianum subsp. columbianum H. F. Copeland 1920-8-12 127 Butte Beside Butte Creek 1676 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  CHSC34190  Actaea rubra L. Ahart 1981-9-21 3194 Butte Along Pinkard Creek, ca. 1/2 mi n of the Lost Creek Reservoir. 1100 Comment
  CHSC53693  Actaea rubra Kirsten Tarp 1983-7-28 307 Butte Chico Meadows, ca. 1.0 mi n of Butte Meadows, near county line. At stream side. 1295 Comment
  CHSC111745  Actinidia arguta Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18232 Butte The northeast side of sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC39549  Adiantum capillus-veneris Lowell Ahart 1983-7-29 4236 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC86079  Adiantum capillus-veneris R. D. Fischer 2003-12-24 1023 Butte Sierra Nevada foothills outside of Chico in Bidwell Park. Plants located on east side of road leading to the old pistol range, near the pistol range. 91 Comment
  SEINET10529852  Adiantum capillus-veneris Mary Susan Taylor 1980-4-19 Taylor 2540 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC23464  Adiantum jordanii J. R. Lee 1974-4-15 1 Butte Found at base of cliff 300 yds se of 9th hole on the Bidwell Municipal Golf Course building, Chico. 76 Comment
  CHSC44988  Adiantum jordanii Louis C. Bock 1987-4-23 13 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  UC440495  Adiantum jordanii Mrs. R. M. Austin 1896-5-1 242 Butte bluff of Butte Creek Comment
  JEPS107524  Aegilops cylindrica Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  CHSC78216  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte On the 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
  CHSC97342  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. 757 Comment
  SEINET10494492  Aesculus californica Lowell Ahart 1985-6-17 Ahart 5045 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC31934  Ageratina occidentalis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1038 Butte Top of Humboldt Peak, ca. 200 met N of summit, northern most portion of Butte Co. 2133 Comment
  CHSC50541  Agoseris aurantiaca Vernon Oswald 1990-7-3 4344 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CAS-BOT-BC22967  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  RSA21543  Agoseris retrorsa C. B. Wolf 1937-5-18 8729 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CDA1683  Agrostis avenacea T. C. Fuller 1976-7-8 20149 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  CHSC49703  Agrostis avenacea Vernon Oswald 1985-5-20 1775 Butte Between the north edge of Hwy 162 and Thermalito Afterbay ca. 1 mi e of Hwy 99. 35 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
  JEPS106004  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 35 Comment
  JEPS98703  Agrostis elliottiana Lowell Ahart 2000-5-16 8358 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S and N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC113411  Agrostis exarata Lowell Ahart 2014-7-10 19640 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS104036  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  CHSC34060  Agrostis gigantea L. Ahart; M. S. Taylor, J. T. Howell 1981-8-15 3045 Butte N end of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  SEINET10507089  Agrostis gigantea Lowell Ahart 1985-11-7 Ahart 5235 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10836300  Agrostis hendersonii Lowell Ahart, L. Hanson 1985-5-20 Ahart 5029 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  UCD52789  Agrostis idahoensis August L. Hormay 1929-8-10 s.n. Butte Philbrook, near the Grahams Mine. Comment
  SEINET10507107  Agrostis microphylla Mary Susan Taylor 1980-5-27 Taylor 2710 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
  CHSC42906  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles south-west of Forbestown. 670 Comment
  UC1594733  Agrostis pallens Lowell Ahart 1992-7-26 6838 Butte small stream about 1/2 mi n Carr Mine (s side of hollow, about 2 (air) mi s of Snow Mountain); Coon Hollow 1737 Comment
  CHSC49497  Agrostis scabra Vernon Oswald; Lowell Ahart 1987-7-1 3066 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  UCSB63780  Agrostis stolonifera Ahart, Lowell 1998-7-18 Butte SW of lone oak tree, W of cow chute on W side of Cherokee Rd; North Table Mtn, about 7 mi N of Oroville by air 403 Comment
  CHSC41923  Agrostis thurberiana Lowell Ahart 1983-8-16 4290 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  SEINET10790429  Agrostis variabilis A. Arthur Heller 1914-8-7 Heller 11660 Butte Summit end of Jonesville on a north slope where snow lies until midsummer. Collected in Yellowstone Park. 2134 Comment
  CAS-BOT-BC138421  Aira caryophyllea Lowell Ahart 1983-4-1 3913 Butte Sierra Nevada. Along edge of old Highway 40, near the end of the road where it runs into Lake Oroville, ca. 4 miles south of Jarbo Gap. 350 Comment
  SEINET10934845  Aira caryophyllea A. Arthur Heller 1914-5-6 Heller 11363 Butte Marysville. Comment
  CDA1711  Aira elegantissima L. Ahart 2000-5-17 8363 Butte 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. On the south margin of Thermalito Afterbay, on the north side of the poor dirt road. Comment
  JEPS98406  Aira elegantissima Lowell Ahart 2000-5-17 8363 Butte 7 1/2 air miles W of Oroville (S margin of Thermalito Afterbay, N side of the poor dirt road, about 1/10 mi N of the Richvale Hwy, 1/2 mi E of Hwy 99) 42 Comment
  CHSC100052  Albizia julibrissin Lowell Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 31 Comment
  CHSC38759  Alisma triviale Vernon Oswald 1983-6-29 793 Butte Upper Bidwell Park, Chico, ca. 300 ft w of Day Camp. In a swampy oxbow of Chico Creek. 91 Comment
  CHSC51934  Allium amplectens E. Ray Latham 1988-4-21 Butte 100 m E of the E end of Fremont St, Chico. 30 Comment
  CHSC90575  Allium amplectens Robert Lyster 1984-4-21 16 Butte About 9 mi east of Chico and 75 yds west of Butte Creek and 100 yds southwest of Covered Bridge. 108 Comment
  RSA550218  Allium amplectens D. W. McNeal, Todd McIntyre 1989-4-18 3367 Butte Bank beside Highway 70, 4.5 miles S of the junction of Highway 162 in Oroville. Comment
  SEINET10472028  Allium amplectens Mary Susan Taylor 1981-5-21 Taylor 3769 A Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC62602  Allium jepsonii B. Castro 1993-8-5 492 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, on WSW-facing slope below N edge of sharp curve in USFS Rd 23N28. 1133 Comment
  CHSC46524  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Near the edge of Ponderosa Way, about 2 miles south of Ponderosa Dam, north-west of Forbestown. 548 Comment
  SEINET10471987  Allium obtusum Mary Susan Taylor 1976-4-24 Taylor 1072 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC29981  Allium peninsulare Lowell Ahart 1980-5-25 2317 Butte Along Swedes Flat Road, ca 1 mi E of Bangor- -Oroville Highway, near Bangor. 320 Comment
  CAS-BOT-BC132078  Allium peninsulare var. peninsulare Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut, along North Honcut Creek 50 Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  CHSC84168  Allophyllum divaricatum Lowell Ahart 2003-7-10 10369 Butte On both sides of the dirt road to the power generator, on the north side of Ponderosa Reservoir, about 1 1/2 miles (air) east of the Ponderosa Dam. 331 Comment
  CHSC40002  Allophyllum integrifolium Lowell Ahart 1983-8-16 4298 Butte On the high banks of a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  CHSC102996  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC49504  Alopecurus aequalis Vernon Oswald; Lowell Ahart 1987-7-1 3060 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  UC1564766  Alopecurus aequalis V. Oswald and L. Ahart 1989-8-22 3957 Butte ca. 3.5 air mi. s.e. of Jonesville (Butte Creek House Meadow on e. side of Humbug Rd.); Butte Creek House Meadow 1767 Comment
  SEINET10790508  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil on floor of rice field, Peter Ahart Ranch, 2 mi. ne of Honcut. 50 Comment
  JEPS127214  Alopecurus saccatus Lowell Ahart 2016-5-17 20837 Butte About 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. Comment
  RSA206796  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson Comment
  CHSC66354  Amaranthus albus Vernon H. Oswald 1996-6-20 7823 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River (S end of Tract 2, Sanctuary II). 33 Comment
  JEPS120614  Amaranthus albus Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 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
  CHSC92456  Amaranthus retroflexus Lowell Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC76397  Ambrosia artemisiifolia Lowell Ahart; Vernon H. Oswald 1999-10-3 8296 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
  JEPS115265  Ambrosia psilostachya Lowell 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 68 Comment
  CHSC113529  Ammannia coccinea Lowell Ahart 2014-9-23 19867 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  SEINET10939968  Ammannia coccinea Mary Susan Taylor 1979-10-2 Taylor 2213 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  JEPS87378  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CDA42897  Amorpha californica L. Ahart 2012-6-9 18177 Butte On both sides of a small drainage, about 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CHSC101256  Amsinckia intermedia Lowell Ahart 2009-4-17 15545 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
  CHSC23470  Amsinckia intermedia J. R. Lee 1974-4-22 3 Butte 15 yds n of the Skyway roadside and 6 miles from the Chico city limits. 152 Comment
  CHSC3615  Amsinckia intermedia R. Jaegel 1966-3-2 37 Butte 4 miles Northeast of Chico. On a south slope of a small drainage in Upper Bidwell Park. Comment
  RSA33142  Amsinckia intermedia A. A. Heller 1941-4-19 16067 Butte Edge of a field on the road to Bidwell Park, north side of sandy gulch or Lindo Channel. Comment
  SEINET10497096  Amsinckia intermedia Mary Susan Taylor 1980-3-1 Taylor 2343 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  JEPS119535  Amsinckia lycopsoides Lowell Ahart 2012-4-20 17889 Butte South of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC727076  Amsinckia lycopsoides A. A. Heller 1940-4-10 15535 Butte e of Chico (alongside Bidwell Park, near the radio station) Comment
  CHSC1389  Anagallis arvensis J. Baynes 1929-4-26 Butte U. S. Plant Introduction Garden. 57 Comment
  CHSC65902  Anagallis arvensis Vernon H. Oswald 1996-4-20 7397 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Large population growing on a low levee in formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC37126  Anemone oregana L. Ahart 1982-9-13 3829 Butte Along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC42565  Angelica californica Vernon Oswald 1985-7-15 1902 Butte Ponderosa way (Rim Rd.) 3.1 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  CAS-BOT-BC84691  Anthemis cotula Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC54546  Anthoxanthum odoratum Vernon H. Oswald; Lowell Ahart 1991-8-19 4834 Butte South side of Humbug Rd between Chaparral Guard Station and Memorial Spring, ca. 3.5 miles (air) southeast of Butte Meadows. 1554 Comment
  CHSC52330  Anthriscus caucalis Pauleen Broyles 1987-5-21 1046 Butte The Nature Conservancy Vina Plains Preserve. On a knoll above the confluence of Singer and Pine Creeks. Comment
  SEINET10547815  Antirrhinum breweri Mary Susan Taylor 1981-6-19 Taylor 3958 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC21049  Antirrhinum cornutum M. S. Taylor 1975-10-3 937 Butte On the Sacramento River, ca. 1/4 mi n of the washout on River Rd, ca. 10 mi w of Chico. 36 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  UCD123429  Antirrhinum cornutum L. E. Hazeltine 1916-6-23 s.n. Butte U.S. Plant Garden, Chico. Comment
  CHSC34040  Antirrhinum vexillo-calyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte Ca. 1/2 mi w of the Forbestown Reservoir along the edge of the dirt rd. ne of Forbestown. 750 Comment
  CHSC39014  Antirrhinum vexillo-calyculatum subsp. intermedium J. D. Jokerst 1983-6-21 1816 Butte Top of North Table Mt at its west edge, top of escarpment edge at the morth edge of Coal Cr Canyon. 304 Comment
  CHSC43144  Antirrhinum vexillo-calyculatum subsp. intermedium R. A. Schlising; J. D. Jokerst 1980-7-2 3815 Butte 0.74 mi SW of Butte Creek. NE of Forest Ranch. 658 Comment
  CHSC59929  Antirrhinum vexillo-calyculatum subsp. intermedium L. P. Janeway 1992-7-24 4279 Butte Dark Canyon Road 1.0 mi south of Parkhill and Big Bend Road. 512 Comment
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  SEINET10547631  Antirrhinum vexillocalyculatum subsp. intermedium Mary Susan Taylor 1979-6-22 Taylor 2169 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CHSC65578  Aphyllon epigalium subsp. epigalium L. P. Janeway 1995-6-1 4765 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC44219  Aphyllon purpureum V. Oswald; L. Ahart 1988-7-13 3575 Butte Road to High Lakes e of Philbrook Reservoir. On a steep outcropping on the n side of the road. 1859 Comment
  CHSC40280  Apocynum androsaemifolium Lowell Ahart 1985-6-17 5047 Butte Along the edge of the dirt road, Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  JEPS94853  Apocynum androsaemifolium Vernon H. Oswald and Lowell Ahart 1998-8-11 9470 Butte Four Trees-Coyote Gap Road 1.3 mi w of Four Trees; Four Trees-Coyote Gap Road 1524 Comment
  UC455477  Apocynum androsaemifolium Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  CHSC52685  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 339 Butte E of Butte Meadows. 1341 Comment
  CAS-BOT-BC17267  Arabidopsis thaliana Lowell Ahart 1990-3-19 6416 Butte About 0.25 mile south of the Feather River, about 0.4 mile west of Pacific Heights Road. 30 Comment
  UC600707  Arabis rectissima var. rectissima H. F. Copeland 1931-6-10 1518 Butte gulch draining into Colby Canyon Jonesville 1524 Comment
  CHSC110  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC100965  Arbutus unedo Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15490 Butte Near the east side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC407719  Arceuthobium abietinum E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1600 Comment
  CHSC44905  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte Along the north side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  HSC73008  Arceuthobium campylopodum M. S. Taylor, L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, E side of Humbug Rd., 14 mi. NE of Stirling City 1738 Comment
  CAS-BOT-BC24437  Arctostaphylos manzanita J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1684 Butte Top of North Table Mtn. at its nw. corner. Center of w. edge section 32. Comment
  UCD163032  Arctostaphylos manzanita D. O. Burge 2015-7-15 1759 Butte Butte Creek watershed, below Doe Mill Ridge. 530 Comment
  UCD52162  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51103 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC24409  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51567 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38860  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15488 Butte Neal road west of Paradise just below the Spring House. Comment
  CHSC585  Arctostaphylos manzanita subsp. manzanita L. Stone 1930-4-6 Butte Near Forest Ranch. 548 Comment
  SBBG125910  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte ca 100 yards SW of intersection of Forbestown Rd and Black Bart Rd, ca 11 mi E of Oroville 741 Comment
  CAS-BOT-BC38530  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 mi. from Paradise on road to Pentz. 426 Comment
  CAS-BOT-BC38566  Arctostaphylos mewukka subsp. truei C. Hart Merriam 1928-10-15 s.n. Butte Bald Rock Rd., about 8 mi. n. of Bidwell Bar, Feather River. Comment
  CHSC48373  Arctostaphylos mewukka subsp. truei Vernon Oswald 1985-2-28 1682 Butte Near Coutolenc Rd. ca. 0.1 mi N of the Skyway on the N edge of the Magalia Serpentine. Comment
  CAS-BOT-BC45571  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC46717  Arctostaphylos patula Saichi Kawahara 1968-5-5 398 Butte Bull Road, 3 mi. s. of Humboldt Rd. 1524 Comment
  JEPS46195  Arctostaphylos patula Duncan Dunning 1921-8-1 Butte near West Branch; Lassen <National> Forest, Big Chico Creek Comment
  POM367380  Arctostaphylos patula H. F. Copeland 1925-5-6 223 Butte Jonesville. 1524 Comment
  SEINET10973497  Arctostaphylos patula Mary Susan Taylor 1974-5-20 Taylor 255 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  UCD51937  Arctostaphylos truei John Thomas Howell 1975-6-15 51102 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET11989235  Arctostaphylos truei J. T. Howell 1975-1 51112 Butte Skyway & Montana Drive, Paradise 610 Comment
  CAS-BOT-BC47377  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51102 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC31919  Arctostaphylos viscida subsp. viscida M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3376 Butte E side of Lumpkin Rd, ca. 300 ft N of Macabes Creek, ca. 2 mi N of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi NE of Oroville. 457 Comment
  UC1121414  Arctostaphylos viscida subsp. viscida J. E. Sowder and C. G. Albertus 1933-7-14 116 Butte 3/10 mi n Forest Ranch P.O.; Chico Quadrangle Comment
  SEINET10537446  Arenaria Mary Susan Taylor 1981-5-21 Taylor 3793 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  CAS-BOT-BC400430  Aristolochia californica John Thomas Howell 1951-6-26 27526 Butte Near Pulga 411 Comment
  HSC85969  Aristolochia californica J. Hunter 1986-2-27 16 Butte 2 km E Chico, 15 m S Chico Creek 70 Comment
  HSC86842  Aristolochia californica Craig Thomas 1977-4-12 14 Butte 300 m E-SE of Chico Municipal Golf Course HQ, 50 m S of Chico Creek, 6 km E of Chico 90 Comment
  UC143064  Aristolochia californica Dr. E. B. Copeland 1903-4-10 3044 Butte Chico Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  UC832874  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte edge of the forest about Chico Meadows Chico Meadows 1219 Comment
  CHSC65534  Arnica discoidea L. P. Janeway 1995-6-20 4802 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC94006  Arnica mollis R. Fischer 2005-9-5 669 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing along Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  CAS-BOT-BC90281  Artemisia douglasiana Lowell Ahart 1977-9-20 1237 Butte Peter Ahart Ranch, Honcut, on the banks of North Honcut Creek 50 Comment
  RSA417265  Artemisia douglasiana H. F. Copeland 1927-9-3 1114 Butte Jonesville. 1524 Comment
  SBBG128103  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, ca. 0.5 mi W of Pacific Heights Rd, ca. 3.5 mi NW of Palermo 31 Comment
  SEINET10839049  Asarum lemmonii Mary Susan Taylor 1981-5-7 Taylor 3648 Butte 3600 ft. T20N R7E sw sec 11, Clipper Mills quad. In shade of shrub, in creek crossing Lumpkin Ridge Rd(20N15), 1.9 mi W of Golden Trout Crossing on South Fork Feather River, ca. 5 air mi e of Feather Falls. Yellow Pine Forest; 1097 Comment
  SEINET10580359  Asclepias cordifolia Edwin B. Copel 1929-7-13 Copeland s.n. 1929 Butte Jonesville 1606 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, 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
  CHSC102716  Asclepias fascicularis Lowell Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CAS-BOT-BC65913  Aspidotis densa John Thomas Howell; Gordon H. True 1969-4-9 45491 Butte Magalia 701 Comment
  CAS-BOT-BC65914  Aspidotis densa John Thomas Howell 1962-6-16 37543 Butte Magalia 731 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
  CHSC64265  Aspidotis densa H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 870 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. 1010 Comment
  SEINET10473397  Aster Mary Susan Taylor Taylor 985 Butte Bidwell Park, Chico. Comment
  CHSC46550  Aster radulinus Vernon H. Oswald 1989-7-18 3865 Butte West side of the road to Colby Mtn Lookout near the Butte-Tehama county line, ca. 0.5 mi (air) NW of Jonesville. 1554 Comment
  CAS-BOT-BC178466  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC103968  Astragalus gambelianus Lowell Ahart 2010-5-7 16611 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC40304  Astragalus gambelianus Lowell Ahart 1985-3-22 4847 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 450 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
  CAS-BOT-BC27797  Astragalus pauperculus C. C. (Mrs.) Bruce 1898-3-1 2430 Butte Plains Comment
  RSA0003125  Astragalus tener var. bruceae C. C. Bruce 1898-03 2430 Butte Plains [no specific locality given] Comment
  UCSB63844  Asyneuma prenanthoides Ahart, Lowell 1997-8-1 Butte West side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T24N, R5E, Section 4 1371 Comment
  CHSC116011  Athyrium distentifolium var. americanum Lowell Ahart 2015-10-9 20549 Butte On the northside of the dirt road to Lotts Lake, about 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir dam. 1842 Comment
  UCR95841  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 733 Butte Jonesville, along creeks. 1600 Comment
  JEPS116043  Athysanus pusillus Lowell Ahart, John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  CHSC34771  Atriplex serenana L. Ahart 1981-10-6 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC41558  Avena barbata R. L. Ondricek-Fallscheer 1982-5-26 138 Butte At sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  CHSC31415  Avena fatua L. Orme 1980-3-14 2 Butte 0.4 km. W. of railroad tracks, 0.8 km. SW. of Chico. 55 Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  UCR74664  Avena fatua Lowell Ahart 1981-5-24 2835 Butte Sierra Nevada Mtns., Peter Ahart Ranch, c. 2 mi N and 0.5 mi east of Honcut 50 Comment
  CHSC44628  Azolla filiculoides Vernon Oswald 1987-5-20 2913 Butte Butte Creek Canyon Ecological Reserve on the s side of Butte Creek, ne of the Skyway. 80 Comment
  JEPS122266  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  POM312949  Azolla microphylla Herbert L. Mason, Verne Grant 1946-8-14 13018 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  JEPS115039  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  RSA769024  Baccharis pilularis L. Ahart 2009-11-19 16544 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  CHSC109780  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC38326  Baccharis salicifolia Vernon H. Oswald 1983-5-2 410 Butte Upper Bidwell Park, Chico, along the edge of Lindo Channel downstream from the flood-control gates. 79 Comment
  UC397037  Barbarea orthoceras E. Copeland 1929-7-15 Butte Jonesville Butte Creek (along Butte Creek) 1550 Comment
  SEINET10907330  Barbarea orthoceras Mary Susan Taylor 1981-5-14 Taylor 3730 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  JEPS98707  Bellardia trixago Lowell Ahart 2000-4-22 Butte 10 mi SW of Oroville (S side of Hwy 162, about 1/4 mi W of Hwy 99) 32 Comment
  CHSC27215  Berberis bealei Pamela Caldwell 1971-10-8 Butte W side of Library. 60 Comment
  CDA42976  Bidens frondosa L. Ahart 2013-11-17 19259 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC101976  Blennosperma nanum John Copeland 1980-1-19 4 Butte Bordering vernal pool ca. 50 ft SE of locked gate, 5 mile E of Meridian Rd., 1.5 miles N of Why 99N, ca. 5 miles N of Chico. Comment
  CHSC23409  Blennosperma nanum M. S. Taylor 1976-3-6 1018 Butte On top of Table Mountain, ca. 50 yds W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  SEINET11836643  Blennosperma nanum Unknown 1978-1 12 Butte ca 20 yds N of Skyway, 3.7 mi E of jct Hwy 99 & Skyway, 6.7 mi SE of Chico 207 Comment
  CHSC38328  Blennosperma nanum var. nanum Vernon H. Oswald 1983-1-20 49 Butte Upper Bidwell Park, Chico, along the edge of Horseshoe Lake. 100 Comment
  CHSC92571  Blennosperma nanum var. nanum L. P. Janeway 2005-3-1 8333 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  RSA0036032  Blennosperma nanum var. nanum Lowell A. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 Comment
  UCD114301  Boechera arcuata Robert E. Preston 1985-4-4 510 Butte ca. 0.5 mi SW of Mayaro. 585 Comment
  RSA32711  Boechera breweri A. A. Heller 1920-3-28 13359 Butte Ten Mile House. Comment
  CHSC31683  Bolboschoenus glaucus L. Ahart 1972-6-20 113 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC55296  Bolboschoenus glaucus Lowell Ahart 1991-9-14 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CAS-BOT-BC28202  Bolboschoenus glaucus Lowell Ahart s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC28203  Bolboschoenus glaucus Verne Grant; Herbert L. Mason 1956-8-7 12291 Butte Gridley Road north of Butte Sink Comment
  CAS-BOT-BC28204  Bolboschoenus glaucus Lowell Ahart 1982-7-10 3765 Butte Ca 1/4 mi SE of the Gray Lodge Headquarters, ca 13 mi SW of Gridley. 35 Comment
  CHSC34780  Bolboschoenus maritimus subsp. paludosus L. Ahart 1981-11-6 3226 Butte Small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  POM142188  Boykinia major Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC417633  Boykinia major A. A. Heller 1928-7-10 I 4662 Butte Wet stream banks at Butte Meadows Comment
  CDA15362  Boykinia occidentalis G. F. Hrusa 1997-5-29 13805 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CDA15368  Boykinia occidentalis G. F. Hrusa 1997-5-29 13796 Butte Sierra Nevada; Bank of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CDA1772  Brachypodium distachyon L. P. Janeway, J. Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills; Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km WNW of Canyon Creek Bridge. Comment
  CHSC101160  Brachypodium distachyon Lowell Ahart 2009-5-15 15673 Butte About 80 yards west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 271 Comment
  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
  CHSC45203  Brachypodium distachyon Lowell Ahart 1974-4-24 434 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC67316  Brachypodium distachyon James D. Jokerst; Barbara Castro 1992-5-19 3353 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  CDA31946  Brassica napus L. Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  CHSC33181  Brassica rapa R. E. Preston 1981-1-20 34 Butte On n bank of Western Canal, ca. 30 m e of Aguas Frias Rd., ca. 18.5 km s of Chico. Comment
  CAS-BOT-BC106323  Brickellia californica John Thomas Howell 1961-9-22 36744 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC46909  Brickellia californica Lowell Ahart 1973-11-1 288 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10475011  Brickellia californica Mary Susan Taylor 1977-11-12 Taylor 1542 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC41556  Briza maxima R. L. Ondricek-Fallscheer 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC99643  Briza maxima H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte). UTM 10 633982E 4365709N. 217 Comment
  CHSC10552  Briza minor Lowell Ahart 1965-4-20 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CDA13905  Brodiaea californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13985 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  CHSC2074  Brodiaea elegans E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  CHSC2076  Brodiaea elegans M. Underhill 1952-7-2 Butte 152 Comment
  CHSC39341  Brodiaea elegans Lowell Ahart 1983-6-26 4146 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  SEINET10533792  Brodiaea elegans A. Arthur Heller 1914-5-8 Heller 11382 Butte Clear Creek school house. Comment
  SEINET10872217  Brodiaea elegans Lowell Ahart 1983-6-6 Ahart 4028 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CAS-BOT-BC482199  Brodiaea elegans subsp. elegans A. A. Heller 1914-5-11 11385 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC482926  Brodiaea elegans subsp. elegans A. A. Heller 1913-6-4 10770 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC100803  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-3 4571 Butte SE of Stirling City at Flea Valley; dry edge of grassy meadow and at roadside. 1118 Comment
  CHSC113396  Brodiaea minor Lowell Ahart 2014-7-2 19552 Butte About 80 yards southwest of cow corral, about 120 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1277 Comment
  CHSC2093  Brodiaea minor E. R. Washburn 1930-4-1 Butte Comment
  SEINET10472618  Brodiaea minor Mary Susan Taylor 1975-2-16 Taylor 376 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  SEINET3888972  Brodiaea multiflora Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3271 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  SEINET8194052  Brodiaea purdyi A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon, near Clear Creek. Comment
  CHSC71463  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte On the southeast side of the dirt road to the Forbestown Reservoir, about 1 mile northeast of Forbestown Road, about 2 1/2 miles (air) northeast of Forbestown. 883 Comment
  CHSC101665  Bromus carinatus var. carinatus Lowell Ahart 2009-4-26 15615 Butte East edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico. 286 Comment
  CHSC87953  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  CAS-BOT-BC148836  Bromus carinatus var. marginatus Vernon Oswald; Lowell Ahart 1987-7-1 3088 Butte Scotts John Road at Big Rock Meadow 1.0 mile north of the road connecting Humboldt and Humbug Roads, ca. 2.5 miles east northeast of Jonesville. 1780 Comment
  CAS-BOT-BC156072  Bromus diandrus Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CAS-BOT-BC156074  Bromus diandrus Lowell Ahart 1987-5-6 5549 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CAS-BOT-BC162454  Bromus laevipes John Thomas Howell 1962-6-15 37495 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162465  Bromus laevipes Lowell Ahart 1985-5-15 1471 Butte 1.5 mile northeast of Concow Res.East of the dirt road, about 1.5 mile northeast of Concow Res. 800 Comment
  CHSC74912  Bromus laevipes E. Hubert 1996-6-24 Butte Ca 6 air mi NE of Paradise, ca 2 mi NNE of Concow Reservoir and 200 ft W of large bend in Concow Rd, 0.5 mi S of its jcn with Ponderosa Way (Rim Rd). Serpentine outcrop. 883 Comment
  CHSC2152  Bromus madritensis subsp. rubens M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  SACT000625  Bromus orcuttianus Herbert Copeland 1930-7-21 Butte in woods by butte creek common, small clumps 1524.0 Comment
  UC1609036  Bromus orcuttianus Lowell Ahart 1993-7-22 7072 Butte about 5 1/2 air mi ne of Feather Falls (on w side of dirt rd about 1/2 mi nw of Camp 18) 1097 Comment
  CHSC8177  Bromus secalinus B. Hamilton 1969-5-19 43 Butte Found 6 miles north of Gridley in Hiway 99 along roadside. Comment
  CHSC9482  Bromus tectorum Harley J. Parmenter 1969-3-4 22 Butte 40 yds. s of Richardson Spring Road, 5 yds e of Cohasset Road. 97 Comment
  RSA4655  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  HSC95509  Calamagrostis canadensis var. langsdorffii L. Ahart 1997-7-11 7757 Butte About 1/4 mi. (air) E of Bald Mtn., about 4 mi. (air) NE of Stirling City, E of the dirt road 1677 Comment
  CHSC38282  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-4-10 318 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC65194  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC50826  Callitriche verna Vernon Oswald 1990-7-23 4380 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. In a pool in the main meadow along the north branch of Butte Creek. 1780 Comment
  CHSC29106  Calochortus albus M. S. Taylor; J. D. Jokerst 1980-4-27 2567 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CAS-BOT-BC487517  Calochortus albus C. C., Mrs. Bruce 1897-5-1 s.n. Butte Foothills Comment
  CAS-BOT-BC489921  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CAS-BOT-BC489972  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC489974  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC76968  Calochortus luteus Ida Ryan 1893-5-1 Butte Humboldt Road. Comment
  UC203869  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte 8 mi n Oroville Comment
  CAS-BOT-BC491846  Calochortus luteus Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  RSA21945  Calochortus monophyllus H. C. Cantelow 1939-5-19 s.n. Butte Brush Creek Ranger Station. Comment
  CHSC46428  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CAS-BOT-BC494315  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Shallow ravine, summit between the West Branch and North Fork of the Feather River on highway 324, in the Arid Transition Life Zone. Comment
  SEINET12046803  Calochortus tolmiei T. R. Norton 1977-1 10 Butte ca 5 mi NE of Paradise, 0.8 mi N of Magalia, 0.25 mi NE of Skyway, 1mi SE of Magalia Reservoir 671 Comment
  CHSC105802  Caltha leptosepala Lowell Ahart 2010-9-28 17266 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC11814  Caltha leptosepala var. biflora E. B. Copeland 1930-6-1 639 Butte Jonesville. In meadow by North Willow Creek. 1550 Comment
  CHSC53697  Caltha leptosepala var. biflora Kirsten Tarp 1981-7-19 34 Butte Ca. 24 air miles ne of Chico; in meadow. 1706 Comment
  CHSC112679  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  UCD129711  Calycadenia multiglandulosa L. Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC106097  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CAS-BOT-BC106100  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Road 335 Comment
  CHSC44060  Calycadenia oppositifolia L. P. Janeway 1988-5-30 2720 Butte Cyn of Big Chico Cr; Upper Bidwell Park, along Upper Park Rd 4.3 mi from Wildwood Ave. 228 Comment
  CHSC87573  Calycadenia oppositifolia R. D. Fischer; Jenny Marr 2004-5-9 143 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between Diversion Dam and Bloody Pin Trail near bluff edge. UTM: 10608190E 4404520N. 192 Comment
  UC1971677  Calycadenia oppositifolia 1977-7-5 2026 Butte 0.6 mi S of Chico Municipal Airport on Cohasset Road 61 Comment
  UC894256  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte 10 mi e of, Oroville; Sierra foothills Comment
  CHSC28385  Calycadenia truncata J. D. Jokerst; M. S. Taylor 1979-10-13 398 Butte Jordan Hill Rd. (Ponderosa Way) 2.55 mi E of junction with the N fork Feather River. 853 Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  CAS-BOT-BC90927  Calycanthus occidentalis John Thomas Howell 1961-9-22 36752 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. 106 Comment
  CHSC116956  Calycanthus occidentalis Matthew Forster 2013-5-7 Butte Five Mile Recreation Area of Middle Bidwell Park, Upper Park Rd., Chico, CA 80 Comment
  CHSC99663  Calycanthus occidentalis H. Koeth 2007-4-12 Butte Chico State Campus, South of Holt Hall (below walking bridge). 57 Comment
  CHSC33652  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3167 Butte N of Magalia and NE of De Sabla, just NE of junction of Skyway and Humbug/Humboldt Roads. 853 Comment
  CHSC95077  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km north of De Sabla Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek and Hendricks Canal. Along edge of the canal bank. 847 Comment
  JEPS113304  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. Comment
  CAS-BOT-BC221232  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC221234  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1930-7-20 1389 Butte Jonesville 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
  CHSC94025  Calystegia occidentalis subsp. occidentalis R. D. Fischer 2005-4-30 735 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants on a west facing, brushy hillside trail. 518 Comment
  RSA754848  Calystegia occidentalis subsp. occidentalis L. Ahart 2009-5-30 15775 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  CHSC34977  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1975-7-28 3172 Butte Forest Ranch, 1.8 mi S of jct Nopel Road and Hwy 32, along latter. Comment
  RSA69294  Camassia leichtlinii subsp. suksdorfii Frank W. Peirson 1926-6-21 6768 Butte Butte Meadow, Humboldt Road. Comment
  CHSC46215  Camassia quamash subsp. quamash Pauleen Broyles 1986-6-18 964 Butte Just inside Lassen National Forest. 1380 Comment
  SEINET10463077  Campanula prenanthoides Mary Susan Taylor 1980-9-12 Taylor 3336 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
  UC177576  Campanula scouleri H. M. Hall 1914-7-1 9798 Butte near Butte Meadows (Sierra Nevada Mountains); Sierra Nevada Mountains 1280 Comment
  CHSC113235  Capsella bursa-pastoris Lowell Ahart 2014-4-26 19418 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC108843  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte Around rocks, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC498  Cardamine californica P. Delaplane 1965-3-2 66 Butte Found ca. 100 yds. from covered bridge on Honey Run Rd. ca. 8 mi. SE of Chico. 304 Comment
  SEINET5343423  Cardamine cordifolia M. J. Williams 1967-4-15 s.n. Butte Near Rock Creek Dam. 671 Comment
  CHSC113275  Cardamine oligosperma Lowell Ahart 2014-4-16 19361 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
  CHSC34481  Cardamine oligosperma C. S. Phillips 1976-4-28 13 Butte Ca. 70 yds. s of Butte Creek and 0.3 mi. w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  JEPS105938  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville 502 Comment
  SEINET8205866  Cardamine oligosperma A. A. Heller 1914-3-12 Butte in canon of Big Chico creek. 69 Comment
  CHSC41899  Cardamine pachystigma Lowell Ahart 1975-4-1 730 Butte Near the trail to Feather Falls, north of Feather Falls. 487 Comment
  JEPS105650  Cardamine pachystigma L. P. Janeway, Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River 341 Comment
  CHSC60579  Cardamine pachystigma var. dissectifolia Vernon H. Oswald; Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Near the creek. 701 Comment
  CDA34187  Carex L. Ahart 2010-4-23 16579 Butte Lawn of home #1082, near the middle of and north side of East 7th Street, between Sycamore Street and Linden Street, Chico. Comment
  CHSC52275  Carex abrupta Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  CHSC50349  Carex amplifolia Vernon Oswald 1990-5-14 4210 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  HSC87063  Carex amplifolia L. P. Janeway 1988-6-29 3114 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  SEINET10467019  Carex amplifolia Lowell Ahart 1983-9-17 Ahart 4439 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC53716  Carex angustata L. P. Janeway 1987-7-4 2417 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  RSA0119040  Carex angustata Lowell Ahart 2014-7-7 19579 Butte Small snow lake, north of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1691 Comment
  CHSC11935  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  SEINET10856119  Carex athrostachya Edwin B. Copel 1928-7-28 Copeland 607 Butte Jonesville. About the edges of the ''Lily Pond'', a permanent pool, warm in summer. 1770 Comment
  UCD140126  Carex aurea L. P. Janeway; R. A. Schlising 1988-7-16 3011 Butte adjacent to Jones Creek at crossing of road to Scotts John Creek. 1615 Comment
  JEPS115982  Carex barbarae Lowell Ahart 2009-6-3 15825 Butte Meadow about 15 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 254 Comment
  CAS-BOT-BC19412  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  CHSC40664  Carex bolanderi J. D. Jokerst 1984-5-19 2024 Butte Seepage along the edge Hwy 70. Ca 1/2 mile south of the highway's junction with Bear Ranch Creek. Comment
  CHSC76841  Carex bolanderi L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio 1997-6-13 5139 Butte About 1.8 mi northeast of Brush Creek, about 1.0 mi east-southeast of Mountain House; along an unnamed tributary of Mountain House Creek at Road 22N54. 1112 Comment
  RSA718308  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CAS-BOT-BC19414  Carex bolanderi L. P. Janeway 1987-6-20 2258 Butte North Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge. 975 Comment
  CHSC41355  Carex brainerdii R. A. Schlising 1983-6-9 4421 Butte N part of county NE of Lomo along Humboldt Road; Carpenter Ridge. 1341 Comment
  CHSC71402  Carex cyrtostachya Lowell Ahart 1998-7-19 8052 Butte On the north side of the dirt road, about 1/2 mile northwest of the Lost Creek Reservoir, about 3/4 mile northwest of the Lost Creek Dam. 1021 Comment
  CAS-BOT-BC34952  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Ca. 0.5 mile south of Bax Hall Flat, 1 mile east of Potter Ravine, immediately north of Lake Oroville. Comment
  CHSC65784  Carex densa Vernon H. Oswald 1996-4-10 7346 Butte Sacramento River National Wildlift Refuge, Llano Seco Unit. U.S. Fish and Wildlife Services parcel between 7 Mile Lane and the Sacramento River. In a shallow roadside ditch on the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. Sacramento Valley. 33 Comment
  CHSC69651  Carex densa James D. Jokerst 1988-4-21 2999 Butte Parrot (Blakely-Swartz) Ranch S of Chico. Comment
  CHSC96835  Carex densa Lowell Ahart 2007-4-30 13703 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
  CAS-BOT-BC34954  Carex densa L. P. Janeway 1987-5-7 2022 Butte NE side of Hwy 149 0.5 mile NW of Hwy 70. 74 Comment
  UC827031  Carex deweyana subsp. leptopoda Lewis S. Rose 1937-6-10 37364 Butte Hurleton 579 Comment
  JEPS121405  Carex divulsa subsp. divulsa P. F. Zika & L. Janeway 2012-5-17 25873 Butte near Camelia Way bridge, N bank of Big Chico Creek, alluvium over andesite, Chico Comment
  SEINET7558592 Image available Carex feta Robert F. C. Naczi, A. 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. 1448 Comment
  CHSC48079  Carex gracilior L. P. Janeway 1989-5-13 3237 Butte Along creek NW of Concow Reservoir and on the W side of Rocky Ridge; E below the Concow Rd 8.3 mi N of Hwy 70. 822 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
  JEPS104626  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
  SEINET4292193 Image available Carex gracilior Unknown 2006-1 8608 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. Oroville Dame 7.5' quad. Comment
  CHSC110238  Carex hirtissima L. P. Janeway 2012-6-2 10831 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC113407  Carex hirtissima Lowell Ahart 2014-7-13 19642 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  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
  SEINET4286137 Image available Carex hoodii L. Janeway, Gog, L 2008-1 3194 B Butte Just east of Philbrook Resevoir. Comment
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 Comment
  JEPS110450  Carex integra Lowell Ahart 2006-8-15 13175 Butte N edge of a wet area W of a large open meadow and bog, about 20 yards E of the poor dirt road, about 100 yards S of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows. 1569 Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CAS-BOT-BC31123  Carex lemmonii L. P. Janeway; Robert A. Schlising 1988-7-22 3069 Butte Jonesville quad. Seep just above the High Lakes Rd. 3.4 mi W of the pass. In the canyon of Philbrook Creek. 1905 Comment
  CHSC61510  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte Small meadow, on the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  UC1609038  Carex lemmonii Lowell Ahart 1993-7-31 7137 Butte about 1 1/2 mi se Bald Mountain (on n side of the dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  CHSC12172  Carex multicaulis Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  CHSC97375  Carex multicaulis Paul Maslin 2006-4-15 45 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609796E 4410665N. 243 Comment
  SEINET10713511  Carex multicaulis Lawrence P. Janeway 1988-5-19 Janeway 2672 Butte T25N, R2E, Cohasset quad. SE1/4 of sec. 36. Along Cohasset Rd near the county line. Partially shaded area on the ridge top; ponderosa pine dominated mixed conifer forest with incense cedar, black oak. 1134 Comment
  CAS-BOT-BC119722  Carex nervina L. P. Janeway; Robert A. Schlising 1988-7-1 2930 Butte Jonesville quad. Meadow between two lakes at SE-most headwaters of Butte Creek. 1935 Comment
  POM81645  Carex nudata C. C. Bruce 1892-05 2377 Butte Unspecified. Comment
  SEINET7571068 Image available Carex pendula L. P. Janeway 2004-6-20 8137 Butte Chico 7.5' quad, 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
  CHSC111957  Carex praegracilis Lowell Ahart 2012-5-23 18108 Butte Along the horse trail, north ofTable 32, aabout 50 yards south of Vallombrosa Avenue, southwest of Crister Ave., Lower Bidwell Park, Chico. 70 Comment
  CHSC43952  Carex praegracilis Vernon Oswald 1988-5-17 3309 Butte South side of Hwy 149, 0.2 mi w of Hwy 70 at Wicks Corner. 79 Comment
  CAS-BOT-BC117543  Carex serratodens John Thomas Howell 1951-8-19 28158 Butte 2 mi W of Pulga 365 Comment
  CHSC49852  Carex specifica L. P. Janeway 1986-9-1 1833 Butte Northeast-facing slope above Philbrook Reservoir. 1798 Comment
  CHSC89738  Carex specifica L. P. Janeway; Robert F. C. Naczi 2004-7-24 8183 Butte High Cascade Range. Near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. 1737 Comment
  SEINET10749868  Carex straminiformis A. Arthur Heller 1928-6-16 Heller 14614 Butte Damp grassy places in the yellow pine forest at Butte Meadows. Comment
  CAS-BOT-BC116738  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CAS-BOT-BC116742  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On S side of Oroville-Quincey Hwy along creek in meadow. 1463 Comment
  CDA13292  Carex subfusca G. F. Hrusa, T. D. Wilfred 1996-7-9 13140 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  RSA550452  Carex subfusca R. Tallent 1987-8-18 956 Butte Lassen National Forest; Along Feather River N of Stirling City. 1037 Comment
  CAS-BOT-BC116744  Carex subfusca L. P. Janeway 1988-6-16 2810 Butte Along Butte Cr, 1/4 mi S of Humboldt Rd via the road in the W side of the canyon. 1264 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  CDA34760  Carex vernacula L. Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. Comment
  CHSC65602  Carex vesicaria L. P. Janeway 1995-8-5 4889 Butte Vernal pool on north side of Humbug Summit Road about 1.2 mi northeast of Snag Lake. 1801 Comment
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  SEINET10549992  Castilleja Mary Susan Taylor 1980-4-6 Taylor 2434 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC40888  Castilleja affinis Ahart; Jokerst 1985-5-10 4947 Butte Along the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC115357  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to the old road and Highway 32, about 6 miles (air) northeast of Chico. 377 Comment
  LA209202  Castilleja applegatei E. B. Copeland; 1930-7-12 Butte Jonesville 1550.0 Comment
  CDA13873  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1997-5-7 13731 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC109609  Castilleja applegatei subsp. pinetorum Lowell Ahart 2012-5-20 18098 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 428 Comment
  SD7119  Castilleja applegatei subsp. pinetorum Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  UC492737  Castilleja applegatei subsp. pinetorum H. F. Copeland 1929-6-10 1234 Butte Jonesville 1524 Comment
  SEINET10549340  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-4-5 Taylor 3484 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC44129  Castilleja arachnoidea V. Oswald; L. Ahart 1988-7-29 3648 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC31820  Castilleja attenuata L. Ahart 1974-4-11 375 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC39929  Castilleja attenuata M. S. Taylor; V. Oswald 1984-4-4 5386 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  OBI9383  Castilleja attenuata Lewis S. Rose 1967-5-6 67055 Butte Oroville 52 Comment
  JEPS124204  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte About 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. Comment
  CHSC90174  Castilleja exserta Carol A. Bordin 1983-4-15 17 Butte 0.3 mi s of Chester Orland (Hwy 32) exit and Little Chico Creek on Hwy 99 s and ca. 0.2 mi east of Tenneco West Almond Processing Plant, East 20th street exit. Comment
  CHSC114967  Castilleja exserta subsp. exserta Lowell Ahart 2015-4-1 20000 Butte Along Bear Valley Road, in Bear Valley, about 50 yards west of Bear Creek, about 6 miles south of Leesville, about 6 miles south of Highway 20. 395 Comment
  JEPS93845  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  RSA0108969  Castilleja lacera Lowell A. Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1.5 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  POM284544  Castilleja miniata Lyman Benson 3956 Butte First Summit, Oroville-Quincy, Sierra Nevada, Feather River Watershed 1829 Comment
  CHSC11994  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville. 1550 Comment
  CHSC3150  Ceanothus cuneatus 1966-4-23 Butte 4 miles E. of highway to Quincy on Pentz Road. Comment
  SEINET13945813 Image available Ceanothus cuneatus A. A. Heller 1914-1 11210 Butte Canyon of Big Chico creek, elev about 250 ft 76 Comment
  UC177593  Ceanothus cuneatus var. cuneatus H. M. Hall 1914-8-2 9831 Butte foothills near Bidwell Bar (near Mt. Ida Ranch), Sierra Nevada Mts. Comment
  UC224215  Ceanothus cuneatus var. cuneatus H. E. Brown Mar 2 1897-Mar 22 1897 157 Butte near Clear Creek 53 Comment
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  CHSC30795  Ceanothus integerrimus var. californicus M. S. Taylor; J. D. Jokerst 1980-4-18 2538 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  CHSC115316  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte On the east side of the road to the Forbestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 573 Comment
  OBI10318  Ceanothus lemmonii H. E. McMinn 1946-5-11 5512 Butte One mi E of Forbestown Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CAS-BOT-BC52008  Ceanothus prostratus H. F. Copeland 1920-3-21 s.n. Butte Jonesville 1219 Comment
  CHSC39798  Ceanothus prostratus Eloise Gallatin 1935-5-4 Butte Doe Mill Mine Road. Comment
  CHSC44132  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  JEPS117916  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Upper Bidwell Park, Chico Cascade Range Foothills (north side of Big Chico Creek 455 m west of Day Camp) 91 Comment
  RSA755755  Centaurea melitensis L. Ahart 2009-5-23 15769 Butte About 200 yards southwest of Pine Trail, Upper Bidwell park, about 1/3 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  CHSC102714  Centaurea solstitialis Lowell Ahart 2009-7-3 15984 Butte 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  RSA88447  Centaurium muehlenbergii J. T. Howell 1951-6-26 27507 Butte Feather River Canyon. 198 Comment
  CDA43076  Centaurium tenuiflorum L. P. Janeway 2011-6-26 10401 Butte Cascade Range Foothills/Sacramento Valley.; Upper Bidwell Park, Chico; just west of Horseshoe Lake. Comment
  CHSC66439  Centaurium tenuiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7758 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 NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC98895  Centranthus ruber L. P. Janeway 2007-12-11 9223 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, east side Table Mountain Blvd bridge. Growing among rock outcrops just above river high water line. 40 Comment
  UC518987  Centromadia fitchii J. Clausen 1932-9-16 657 Butte 20 mi s Chico (between Richvale and Nelson) Comment
  CAS-BOT-BC288526  Centromadia fitchii David D. Keck 1932-7-2 1613 Butte 6 miles NE of Oroville, on road to Quincy 250 Comment
  JEPS88496  Centromadia parryi subsp. rudis Vernon H. Oswald and Lowell Ahart 1996-7-22 8096 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on edge of public access parking lot on 7 Mile Lane, adjacent to se corner of Tract 2, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 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
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC222894  Cephalanthus occidentalis A. A. Heller 1914-7-14 11574 Butte Canon [Canyon] of Big Chico Creek. On streams bordering the Sacramento Valley Comment
  CDA38803  Cephalanthus occidentalis L. Ahart 2012-7-5 18278 Butte On south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SD149106  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Edge of the North Fork of the Feather River, near the Poe Power House, ca. 2 mi. SE of Jarbo Gap 890 Comment
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Jan 9 2013
  CHSC30877  Cerastium glomeratum J. D. Jokerst 1979-4-2 1164 Butte Top of North Table Mt, immediately S of the jct of the east edge of Mt. 396 Comment
  RSA0118720  Cerastium glomeratum Lowell A. Ahart 2014-4-16 19363 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  UCD98036  Cerastium glomeratum Joseph M. DiTomaso 1976-5-23 474 Butte On south side of Lake Oroville. 274 Comment
  CAS-BOT-BC388256  Cerastium glomeratum A. A. Heller 1915-5-28 11915 Butte Near Cohasset Comment
  CHSC113371  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte In shallow water, small pond on 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
  CDA36293  Ceratophyllum demersum Ed Finley? Jul 1987 Butte Sacramento River, Mile 195, east bank. [Near Hamilton City] 0 Comment
  UC1101322  Ceratophyllum demersum Herbert L. Mason and Verne Grant 1946-8-8 12994 Butte Sanford Slough on Tule Gun Club (Butte Sink); , Sanford Slough Comment
  CHSC45906  Cercis occidentalis Lowell Ahart 1973-3-26 185 Butte Growing along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA719533  Cercis occidentalis Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12880 Butte East of Chico along Rt. 32. Comment
  RSA754857  Cercis occidentalis L. Ahart 2009-4-26 15620 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  SEINET12164080  Cercis occidentalis J. M. Thayer 1984-1 1 Butte SW of Covered Bridge betw Honey Run Rd. and Butte Creek. Chaparral 107 Comment
  CAS-BOT-BC137006  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  CHSC8622  Cercocarpus betuloides var. betuloides L. V. Ritter 1969-5-20 296 Butte Ca 2 mi. w of Paradise, 25 yds. s of Skyway. Comment
  CHSC40473  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1985-5-15 4968 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  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
  SEINET10483790  Chamaebatia foliolosa Mary Susan Taylor 1980-2-17 Taylor 2363 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC118037  Chamaemelum fuscatum Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 234 Butte Off Hwy 70 between Honcut and Durham near prune orchard. 45 Comment
  CHSC102521  Chamaesyce maculata Lowell Ahart 2009-10-8 16414 Butte South of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS108966  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 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
  UC1564748  Chamaesyce serpyllifolia V. Oswald and L. Ahart 1989-8-15 3942 Butte 1.2 air mi n Philbrook Reservoir (Soda Ridge Rd, 1.4 mi w of junction with Coon Hollow) 1752 Comment
  CHSC43697  Chamerion angustifolium subsp. circumvagum Vernon Oswald 1985-7-18 1907 Butte Butte Creek ca. 0.2 mi w of Humboldt Rd. at the road island at Cherry Hill. On the edge of a meadow. 1414 Comment
  HSC66082  Cheilanthes cooperae M. S. Taylor 1980-4-16 2484 Butte Lake Oroville State Recreation Area on S side of Lake Oroville .5 mi. W of Hwy. 70, 5 mi. N of Oroville 305 Comment
  CAS-BOT-BC69449  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  CAS-BOT-BC69450  Cheilanthes gracillima H. W. Hallins 1914-7-1 9806 Butte Jonesville. 1737 Comment
  CHSC37406  Cheilanthes gracillima R. A. Schlising 1982-5-19 4245 Butte Lumpkin Ridge, e of village of Feather Falls, along Lumpkin-La Porte Road. 1280 Comment
  CAS-BOT-BC460928  Chenopodium Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  SEINET10838810  Chenopodium album Mary Susan Taylor Taylor 772 Butte Weedy or cultivated plants of Chico. 61 Comment
  JEPS102592  Chenopodium ambrosioides var. suffruticosum Lowell Ahart 2001-10-10 9413 Butte On the north side of Gridley Road, about 100 yards SE of the bridge across the Feather River, about 3 1/2 miles (air) east of Gridley. 27 Comment
  CHSC83027  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  UC600744  Chenopodium berlandieri H. F. Copeland 1930-7-26 Butte Canyon of Butte Creek Jonesville 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
  CHSC117751  Chenopodium strictum var. glaucophyllum Lowell Ahart 2016-10-25 21373 Butte Around buildings, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET10479041  Chenopodium vulvaria Lowell Ahart 1991-8-17 Ahart 6703 Butte In the native plant garden at the Durham Elementary School, Durham. Urban-suburban. 55 Comment
  UC474264  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte woods near Jones Creek (Jonesville); Jonesville Comment
  CHSC71636  Chimaphila umbellata Vernon H. Oswald; Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Rd. 1463 Comment
  UC474266  Chimaphila umbellata H. F. Copeland 1928-8-14 1002 Butte neighborhood Jonesville (on ridge above Scotch-John Creek) Comment
  SEINET3451380  Chloris virgata Unknown 2006-8-2 6 .337 Butte East of Butte City, East of Butte City, along Ord Ferry Road, east of old Sacramento River district 30 Comment
  CHSC44530  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte 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
  UC765935  Chlorogalum angustifolium R. F. Hoover 1936-5-21 1167 Butte 7 mi n Chico Comment
  SEINET10472637  Chlorogalum pomeridianum Mary Susan Taylor 1980-7-6 Taylor 3053 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
  CHSC19948  Chlorogalum pomeridianum var. pomeridianum M. S. Taylor 1975-3-10 406 Butte Above Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 6 mi e of Chico. 243 Comment
  SEINET11933836  Chorizanthe membranacea Unknown 1984-1 4678 Butte Along the dirt road near the water tower, above the generator, ca 1 mi E of Ponderosa Dam, ca 2 mi 475 Comment
  CHSC97362  Chorizanthe polygonoides var. polygonoides Paul Maslin 2005-5-1 58 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  JEPS117520  Chorizanthe stellulata L. Ahart 2010-5-23 16735 Butte West side of Pine Trail, about 40 yards west of Highway 32, about 9 air miles northeast of Chico 479 Comment
  SD1113  Chrysolepis sempervirens E. B. Copeland 1931-7-27 Butte Jonesville 1650 Comment
  SEINET10475251  Chrysopsis oregona var. compacta Mary Susan Taylor 1979-10-2 Taylor 2210 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  UC328923  Circaea alpina subsp. pacifica unknown Butte near Camp Colby Comment
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  CAS-BOT-BC228762  Cistanthe umbellata Javier Penalosa 1962-6-18 2478 Butte Near confluence of French and Peavine Crks., forest 640 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
  HSC23365  Clarkia arcuata Carolyn Fante 1971-4-13 27 Butte W side of road on Table Mtn. 396 Comment
  HSC87164  Clarkia arcuata Robert E. Preston 1979-4-22 17 Butte N side of Cherokee Rd., 5 mi. N of Oroville 366 Comment
  RSA0059982  Clarkia arcuata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC39039  Clarkia biloba subsp. brandegeeae Lowell Ahart 1983-6-26 4142 Butte About 14 miles ne of Oroville, along Ponderosa Way, just a little s of the East Fork of Canyon Creek. On the road cut. 500 Comment
  CHSC99307  Clarkia biloba subsp. brandegeeae Lowell Ahart 2008-5-21 14789 Butte Below the high water line of Lake Oroville, on the steep 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
  CHSC27719  Clarkia concinna subsp. concinna Robert A. Schlising; Coleta Lawler 1978-5-29 3278 Butte Northern part of county near Cohasset; along Cohasset Road, 4.3 miles above crossing of Mud Creek and 4.1 miles NE of jct with road to Richardson Springs; bank of roadside. Comment
  CAS-BOT-BC165940  Clarkia gracilis Lowell Ahart 1975-5-12 s.n. Butte Peter Ahart Ranch, Honcut 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
  CHSC65576  Clarkia mosquinii L. P. Janeway 1995-7-7 4834 Butte Along Hwy 70 1.3 mi northeast of Jarbo Gap. Southeast-facing road cutbank through mid-slope of North Fork Feather River canyon. 655 Comment
  CHSC70736  Clarkia mosquinii L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4410 Butte Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. Southwest-facing road cutbank. 902 Comment
  CHSC70740  Clarkia mosquinii L. P. Janeway 1994-6-23 4671 Butte Pinkston Canyon Road about 400 ft east of Concow Road. Southwest-facing road cutbank. 563 Comment
  CHSC52094  Clarkia purpurea R. C. Kirkpatrick 1972-4-25 39 Butte Found ca. 100 yds. se of Horseshoe Lake and ca. 50 yds sw of the skeet shooting range. 152 Comment
  SEINET12192832  Clarkia purpurea Unknown 1968-1 28 Butte Table Mt., ca 6 mi N of Oroville Comment
  CAS-BOT-BC163641  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CAS-BOT-BC163652  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1962-6-16 37599 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CAS-BOT-BC163654  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-10 6224 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 280 Comment
  CHSC27727  Clarkia purpurea subsp. quadrivulnera Robert A. Schlising 1978-5-20 3265 Butte SE of Chico Airport, north of Chico, along Cohasset Hwy. Comment
  CHSC37425  Clarkia purpurea subsp. quadrivulnera R. A. Schlising; K. Tarp 1982-7-28 4360 Butte NE of Oroville and NW of Mountain House; along French Creek; in meadow. 609 Comment
  RSA715677  Clarkia purpurea subsp. quadrivulnera L. Ahart 2005-5-28 11820 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC1110  Clarkia purpurea subsp. viminea V. Holt 1942-5-16 Butte Chico Creek. Comment
  CAS-BOT-BC164780  Clarkia rhomboidea John Thomas Howell 1962-6-15 37470 Butte Magalia 731 Comment
  CHSC101822  Clarkia rhomboidea Lowell Ahart 2009-5-23 15768 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC70751  Clarkia rhomboidea L. P. Janeway 1993-6-23 4402 Butte Along Road 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CHSC70760  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of West Branch Feather River. 1402 Comment
  SEINET10492519  Clarkia rhomboidea K. Bridwell 1978-5-28 Bridwell 117 Butte Along Highway 70, ca 6 miles ne of intersection with Pentz-Magalia Hwy, ca 4 miles se of Paradise. Yellow Pine Forest. 2500 feet. 760 Comment
  SEINET11933195  Claytonia heterophylla Unknown 1983-1 4289 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  SEINET210458  Claytonia palustris E. B. Copeland 1929-7-28 358 Butte Jonesville CA. along Spring Cr. 1500 Comment
  CHSC98971  Claytonia parviflora subsp. parviflora Lowell Ahart 2008-5-8 14718 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 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
  CHSC20408  Claytonia rubra subsp. rubra C. Glascock 1965-5-15 400 Butte Butte Meadows area, 1.1 mi. W on Scout Rd. from its intersection with Humboldt Rd. 1066 Comment
  CHSC33572  Claytonia rubra subsp. rubra M. S. Taylor 1981-4-27 3557 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
  CHSC84381  Clematis lasiantha Vernon Oswald 1983-4-1 251 Butte Upper Bidwell Park, Chico beside the South Rim Trail ca. 1000 ft w of the power lines. 134 Comment
  SEINET10536025  Clematis lasiantha Mary Susan Taylor 1975-4-25 Taylor 491 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CAS-BOT-BC92578  Clematis ligusticifolia Lowell Ahart 1983-7-24 4215 Butte At the Forbestown Reserve, about 5 miles northeast of Forbestown. 450 Comment
  CHSC89461  Clematis ligusticifolia R. D. Fischer 2004-7-18 451 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. Along drainage, between road and Big Chico Creek. 216 Comment
  JEPS88229  Clematis ligusticifolia Vernon H. Oswald and Lowell Ahart 1996-6-10 7742 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (at n end of the Riparian Sanctuary, Sacramento R. National Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  CHSC1735  Collinsia sparsiflora H. Summers 1929-3-25 Butte Richardson Springs Road. 152 Comment
  CHSC82509  Collinsia tinctoria Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9732 Butte On a road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET10548310  Collinsia tinctoria Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4106 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC61000  Collomia grandiflora Lowell Ahart 1993-6-26 7034 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET12331811  Collomia grandiflora L. Ahart, Ahart, P. 1984-1 4747 Butte ca 1.5 m SE of Bald Mountain, 3/4 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 Comment
  SEINET12329580  Collomia heterophylla L. Ahart, Ahart, P. 1984-1 4694 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown, Yellow Pine Forest 700 Comment
  POM82270  Conium maculatum C. C. Bruce 1897-05 2044 Butte Sacramento River Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  SEINET10870113  Convolvulus arvensis Mary Susan Taylor 1982-5-22 Taylor 4499 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CAS-BOT-BC285919  Conyza bonariensis Lowell Ahart 1982-9-9 3771 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC286059  Conyza canadensis Ira L. Wiggins 1928-9-9 3348 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SEINET12331907  Cordylanthus pilosus subsp. bolanderi Unknown 1985-1 5153 Butte along Forbestown Ditch, about 2.5 mi NE of Forbestown 869 Comment
  CHSC1741  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  CHSC50805  Cordylanthus pilosus subsp. trifidus Vernon Oswald; Mary Bailey 1990-8-2 4428 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  JEPS104641  Cordylanthus pilosus subsp. trifidus Lowell Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, ca 1/2 mi n of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 320 Comment
  JEPS66509  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2766 Butte Nimshew (site), nw of Magalia 853 Comment
  CDA5367  Coriandrum sativum L. Ahart 2001-5-1 8742 Butte On the sides 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
  CHSC20128  Cornus florida M. S. Taylor 1975-5-6 557 Butte Ca. 5 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  SEINET10841074  Cornus florida Mary Susan Taylor 1975-5-6 Taylor 557 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CAS-BOT-BC209736  Cornus glabrata Lowell Ahart 1987-4-30 5486 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC63246  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC90089  Cornus nuttallii Brent E. Palmer 1991-4-4 16 Butte 1 mi south of Forest Ranch on Hwy 32. 10 ft south of roadside. 609 Comment
  CHSC46795  Corydalis caseana subsp. caseana R. A. Schlising; P. Broyles 1987-6-26 4526 Butte NE of Inskip, just E of Brown Ravine, on small tributary of Last Chance Creek. 1584 Comment
  CHSC29110  Corylus cornuta var. californica M. S. Taylor 1980-4-27 2555 Butte Along Middle Butte Creek off of Little Butte Creek. Ca. 1 1/2 mi se of Nimshew. 609 Comment
  CDA34627  Cotoneaster lacteus L. Ahart 2009-5-3 15802 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. Comment
  CHSC82274  Cotoneaster lacteus M. MacArthur 1968-6-16 332 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CAS-BOT-BC291332  Cotula coronopifolia Lowell Ahart 1982-5-29 3450 Butte North of the Peter Ahart Ranch about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  CAS-BOT-BC291334  Cotula coronopifolia Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo 35 Comment
  SEINET10482970  Crassula Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5227 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
  CHSC29058  Crassula aquatica R. A. Schlising 1980-4-2 3535 Butte 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito afterbay. Comment
  CAS-BOT-BC427916  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC70850  Crassula connata Lowell Ahart 1998-4-8 7950 Butte 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  CHSC36970  Crassula tillaea M. S. Taylor; L. Ahart, J. D. Jokerst 1982-4-28 4372 Butte Graylodge Wildlife Refuge, around parking lot 5, ca. 1 mi s of HQ, ca. 12 mi sw of Gridley. 19 Comment
  CHSC102563  Crataegus monogyna L. P. Janeway 2010-4-1 9969 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Upper Park Road, east side of the start of Yahi Trail (at Upper Park Road). 91 Comment
  CHSC5963  Crataegus monogyna M. MacArthur 1968-6-17 204 Butte NW corner of Auditorium, ca. 20 ft. from entrance, Chico State College campus. 60 Comment
  UC196315  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  CHSC103215  Cryptantha crinita Paul Kirk 2010-5-25 102 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  CHSC62534  Cryptantha intermedia L. P. Janeway 1993-5-2 4337 Butte Sperpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC78128  Cryptantha intermedia Lowell Ahart 2000-5-31 8421 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
  RSA32911  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  RSA718310  Cryptantha intermedia L. Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 355 Comment
  CHSC33417  Cryptantha simulans R. A. Schlising; M. S. Taylor 1980-7-5 3830 Butte 0.25 miles S of Tehama County line on Hwy 32. 1121 Comment
  CHSC33413  Cryptantha torreyana R. A. Schlising 1980-7-5 3832 Butte N part of county; at roadside, 2.0 miles S of Butte Meadows junction of Skyway and Humboldt Road, along latter. 1432 Comment
  CHSC100476  Cupressus lusitanica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15423 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC1086220  Cupressus macnabiana L. Heckard and R. Bacigalupi 1951-8-7 3473 Butte 0.5 mi ne of Magalia 701 Comment
  SEINET10531460  Cupressus macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Wolf 2122 Butte Sierra Neveda Foothills, at Magalia. Upper sonoran:- Digger Pines. Sun. Bright green serpentine. 700 Comment
  SEINET10932809  Cupressus macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Wolf 2121 Butte Sierra Nevada foothills, at Magalia. Upper sonoran:- Digger Pines. Sun. Bright green serpentine. 700 Comment
  CHSC40220  Cuscuta californica Lowell Ahart 1985-6-17 5066 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  SEINET10902992  Cuscuta californica Lowell Ahart 1983-8-16 Ahart 4282 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC46488  Cuscuta howelliana Lowell Ahart 1978-5-15 1721 Butte Peter Ahart Ranch, about 2-1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC66334  Cuscuta indecora M. S. Taylor 1980-6-7 2791 Butte SW corner of Hwy. 162 and Aquas Frias (Goodspeed-Watt Rd. on some maps), 15 mi. S of Chico 46 Comment
  CHSC113062  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte On dry smoothed dredge tailings, northwest of a large wash, about 1/2 mile southeast of Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  JEPS121237  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte NW of a large wash, about 0.5 mile SE of the Honcut Cemetery, about 3.24 air miles NE of Honcut. Comment
  RSA0105592  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte Northwest of a large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  SBBG119818  Cuscuta pentagona L. Ahart 2006-10-1 13388 Butte W of N Honcut Crk, ca. 2.5 mi N and 2.75 mi E of Honcut, ca. 12 air mi SE of Oroville 54 Comment
  CHSC578  Cuscuta subinclusa R. M. Stanley 1952-7-1 Butte Honey Run. 243 Comment
  UC478482  Cuscuta subinclusa E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  CHSC44464  Cyclospermum leptophyllum Lowell Ahart 1988-5-15 6003 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC116210  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC116743  Cynosurus echinatus Lowell Ahart 2016-5-24 20871 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC117438  Cynosurus echinatus Lowell Ahart 2016-5-30 20902 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, aabout 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC38804  Cynosurus echinatus Vernon Oswald 1983-5-4 429 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek 400 ft w of the power lines. 91 Comment
  RSA755042  Cynosurus echinatus L. Ahart 2009-5-15 15674 Butte About 80 yards W of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 271 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC68382  Cyperus eragrostis L. P. Janeway 1988-5-29 2706 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  CHSC84153  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the west side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  UC143630  Cyperus eragrostis Dr. E. B. Copeland 1903-7-27 3490 Butte Chico 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
  CHSC41770  Cyperus erythrorhizos Lowell Ahart 1986-11-9 5447 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC69730  Cyperus erythrorhizos Lowell Ahart 1997-10-24 7944 Butte About 200 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
  JEPS119524  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  UCD141049  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  CHSC45144  Cyperus flavescens Lowell Ahart 1975-7-19 901 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
  JEPS120159  Cyperus flavescens Lowell Ahart 2012-9-28 18474 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  SEINET13711402  Cyperus flavescens Lowell William Ahart, Lowell William Ahart 1999-1 8143 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  UCR146290  Cyperus flavicomus Ellen Dean, Et al. 2001-8-20 850 Butte Biggs UC Field Station, N of town of Biggs, west of jct. of Hwys 99 and 162, south side of Hamilton road, west of jct. with Riceton Hwqy, W side of RR tracks; along dirt road that is the extension of Hamilton rd. Comment
  RSA0060810  Cyperus iria Lowell A. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CHSC39406  Cyperus niger L. Ahart 1983-9-17 4432 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 182 Comment
  CHSC97724  Cyperus niger Lowell Ahart 2007-11-3 14554 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS115055  Cyperus niger Lowell Ahart 2007-11-3 14554 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  JEPS116000  Cyperus niger Lowell Ahart 2009-6-30 15924 Butte Drainages in meadow 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
  UCR263570  Cyperus niger Lowell Ahart 2000-8-23 8662 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  SEINET227301  Cyperus niger Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mile NE of Kunkle Reservoir S of Paradise 600 Comment
  CAS-BOT-BC113845  Cyperus niger var. capitatus John Thomas Howell 1959-9-20 34639 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  JEPS94767  Cyperus squarrosus Lowell Ahart 1998-7-18 8037 Butte about 7 air mi n of Oroville (about 1/2 mi n of the ione oak tree, about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 408 Comment
  POM185071  Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CDA38898  Cyperus strigosus L. Ahart 2009-8-13 16276 Butte Chico: about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park. Comment
  CHSC102994  Cyperus strigosus Lowell Ahart 2009-8-13 16276 Butte About 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC56609  Cyperus strigosus L. P. Janeway 1988-6-26 2885 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi northeast of the high-voltage power-lines. 60 Comment
  CHSC68415  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-10-4 1908 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC33910  Cypripedium fasciculatum M. S. Taylor 1981-5-27 3803 Butte W side of Paradise Lake, ca 1/2 way between Butte Cr ... Field redacted by CHSC, contact the data manager for more information 792 Comment
  CHSC111164  Cystopteris fragilis Lowell Ahart 2012-6-21 18203 Butte High south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC28412  Cystopteris fragilis M. S. Taylor 1979-9-28 2192 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  UC1594527  Cystopteris fragilis Lowell Ahart 1992-7-26 6835 Butte ca. 2 air mi s of Snow Mt (s side of Coon Hollow, ca. 1/2 mi n of Carr Mine) 1737 Comment
  UC600566  Cystopteris fragilis H. F. Copeland 1932-7-24 Butte gulch draining into Butte Creek meadows Jonesville 1800 Comment
  POM121176  Cystopteris fragilis C. C. Bruce 1897-05 1666 Butte Iron Canyon. Comment
  SEINET10535615  Cystopteris fragilis Mary Susan Taylor 1979-9-28 Taylor 2192 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC201005  Cytisus scoparius John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54411 Butte Madrone Lake near Berry Creek 600 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
  CHSC109588  Dactylis glomerata Lowell Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CAS-BOT-BC445501  Damasonium californicum Herbert L. Mason 1927-5-9 3705 Butte Sacramento Valley, 15 miles west of Oroville Comment
  CHSC112439  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards west of a wet meadow, about 40 yards north of Forbestown Road, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SEINET10968236  Danthonia californica Lowell Ahart 1983-8-16 Ahart 4291 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
  SEINET10454657  Daucus pusillus Mary Susan Taylor 1977-6-25 Taylor 1386 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  SEINET10536226  Delphinium Mary Susan Taylor 1976-3-9 Taylor 1022 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  JEPS108547  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge 1127 Comment
  CAS-BOT-BC8564  Delphinium hansenii C. C., Mrs. Bruce 1897-6-1 1913 Butte unspecified Comment
  POM99220  Delphinium hansenii subsp. hansenii C. C. Bruce 1897-06 1917 Butte [Unspecified] Comment
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Oct 4 2007
  CAS-BOT-BC10302  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Along Bloomer Hill Road, about 0.75 mile west of the Oroville Quincy Highway, about 15 miles NE of Oroville 425 Comment
  CAS-BOT-BC10304  Delphinium hesperium Lowell Ahart 1981-7-7 2912 Butte Along Swedes Flar Road, near Bangor 350 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
  CAS-BOT-BC8067  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  RSA253329  Delphinium patens A. A. Heller 1938-4-14 15036 Butte Treeless summit of Table Mtn. Comment
  CHSC56776  Delphinium patens subsp. patens J. D. Jokerst; Lowell Ahart, M. S. Taylor 1980-4-7 567 Butte Edge of Swedes Flat Road, 0.8 mi east of its junction with Oroville-Bangor Hwy, ca 10 mi southeast of Oroville. Comment
  CHSC56778  Delphinium patens subsp. patens J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte South side of Olive Hwy 0.4 mi southwest of its junction with Forbestown Road; ca 6.0 air mi east of Oroville. Comment
  CHSC56877  Delphinium patens subsp. patens Eric F. Heinitz 1979-4-25 2 Butte North side of Skyway. Field ca. 30 m n of road. 243 Comment
  CHSC67379  Delphinium patens subsp. patens James D. Jokerst; R. A. Schlising 1985-4-8 2224 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  CHSC52817  Delphinium variegatum J. D. Jokerst 1981-5-10 1307 Butte Ca 1/2-3/4 mi S of the Skyway along w side of Hwy 99. Comment
  CHSC53296  Delphinium variegatum Denise Dachner 1975-4-8 5 Butte Ca. 4 yds n of highway 32, 2 mi e of Chico. 60 Comment
  CHSC53298  Delphinium variegatum R. J. Goedl 1976-4-20 1 Butte Ca. 6.4 mi se of Chico on Skyway, 25 yds s of Highway. Field. 213 Comment
  CHSC76957  Delphinium variegatum Margie Collins 1894-5-1 Butte Chico. Comment
  SEINET10448604  Dentaria pachystigma var. dissectifolia Lowell Ahart 1983-3-28 Ahart 3906 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  SEINET10507361  Deschampsia cespitosa Mary Susan Taylor 1978-6-24 Taylor 1663 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CAS-BOT-BC194309  Deschampsia cespitosa subsp. cespitosa A. A. Heller 1928-6-16 14621 Butte Butte Meadows Comment
  CHSC34605  Deschampsia danthonioides Mary Banchero 1979-4-18 18 Butte Northernmost Butte county, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. Roadside. 56 Comment
  SEINET10966580  Deschampsia danthonioides A. Arthur Heller 1914-5-13 Heller 11399 Butte Between Durham & Nelson. Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CAS-BOT-BC388455  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  CHSC94163  Dianthus armeria subsp. armeria Lowell Ahart 2006-6-24 12863 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. 1113 Comment
  CAS-BOT-BC402383  Dicentra formosa subsp. formosa A. A. Heller 1915-6-11 11965 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC19653  Dicentra formosa subsp. oregana K. R. Stern 1966-4-1 Butte Chico. Comment
  CAS-BOT-BC209183  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 miles west of Pulga - Sierra Nevada 365 Comment
  CAS-BOT-BC500059  Dichelostemma capitatum Helen Edwards 1917-6-1 s.n. Butte DeSabla Comment
  UC421798  Dichelostemma capitatum Francis Ramaley 1917-5-6 11206 Butte 3 of Chico Comment
  CHSC4224  Dichelostemma capitatum subsp. capitatum J. Senter 1967-3-10 26 Butte Abundant along Upper Bidwell Rd. from Horseshoe Lake east, Chico. 152 Comment
  CHSC79869  Dichelostemma capitatum subsp. capitatum Leanna Brown 1999-3-9 20 Butte Canyon Rim Pl. Rd. and Skyway. 130 Comment
  UCSB63605  Dichelostemma capitatum subsp. capitatum Woodmansee, B. 1987-4-7 Butte Skyway, Hamlin Canyon 274 Comment
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Jul 24 2008
  CHSC30734  Dichelostemma multiflorum M. S. Taylor 1980-5-27 2727 Butte N side of Oroville-Quincy Hwy, ca 2 mi s of Lake Madrone. 609 Comment
  RSA256665  Dichelostemma multiflorum Kitsy Kelly 1974-4-20 16 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  SEINET10533976  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2570 Butte T22N R2E so sec 25. N side of Humburg Rd., ca 1/4 mile upstream from Honey Run Covered Bridge, ca 7 miles e of Chico. Foothill Woodland; 400 ft. With Tritelia laxa, Daucus pusillus, Allium. Comment
  CHSC82641  Dichelostemma volubile Tara Morgan 2002-5-7 54 Butte Within the burn area of the 2001 Yankee Hill Fire within the area of Yankee Hill along Yankee Hill Rd. off of Highway 70 east of Lake Oroville. 481 Comment
  UC143025  Dichelostemma volubile Mrs. R. M. Austin May 1896 836 Butte Iron Canyon Comment
  CHSC41983  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC30873  Diplacus angustatus J. D. Jokerst 1979-4-2 1173 Butte Top of North Table Mt., ca 200 m S of Cherokee Rd where it intersects the E edge of section 17, (E edge of Mt). 396 Comment
  SEINET13751508 Image available Diplacus grandiflorus Margaret J. Williams, Wayne Roderick 1984-1 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CAS-BOT-BC154030  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC28630  Diplacus torreyi M. S. Taylor 1979-10-5 2235 Butte Se side of Paradise lake, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC34720  Diplacus torreyi M. S. Taylor; R. Bacigalupi 1981-4-27 3555 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
  CHSC62135  Diplacus torreyi L. P. Janeway 1993-7-7 4434 Butte Plumas National Forest. Along dirt road to the Bear Ranch Creek falls, 0.7 mi south of Arch Rock Tunnel; canyon of North Fork Feather River. 502 Comment
  CHSC63667  Diplacus torreyi B. Castro; R. Zabell 1989-6-8 314 Butte Ca 3 mi S of Brush Creek, ca 0.1 mi E of Bald Rock Rd. By old logging road in vicinity of meandering creeks. 1005 Comment
  CHSC45985  Diplacus tricolor Lowell Ahart 1974-4-14 413 Butte Peter Ahart Ranch, about 2miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET8373690  Diplacus tricolor A. A. Heller 1914-4-24 11314 Butte Chico-Oroville road 8 miles from Chico. Comment
  UC1185278  Dodecatheon clevelandii subsp. patulum H. E. Brown Apr. 1-15, 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  JEPS14261  Dodecatheon hendersonii Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5613 Butte 6.0 mi s Oroville (along road from Oroville s to Bangor); s of Oroville 167 Comment
  CHSC54566  Dopatrium junceum Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6668 Butte On the Rice Experiment Station, about 1/8 mile south of Butte City Highway, north of Biggs. 30 Comment
  SD122580  Downingia bella Lowell Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca. 1.5 mile north and 0.5 mile east of Honcut., 12 miles south of Oroville. 49 Comment
  POM59016  Downingia bicornuta E. B. Copeland 1903-5-30 3283 Butte Chico. Comment
  UC144216  Downingia bicornuta var. bicornuta Copeland 1903-5-30 3284 Butte Chico Comment
  SEINET12326977  Downingia cuspidata R. T. Retuta 1978-1 17 Butte 5 ft. E of Broyles Rd, ca 1500 W of Hwy 99, ca 8.5 mi NW of Chico, Sect. 10, T23N, R1W 62 Comment
  CHSC181  Downingia insignis V. Holt 1935-5-15 Butte Oroville road. 76 Comment
  CHSC33700  Downingia insignis L. Ahart 1981-4-6 2748 Butte In a depression se of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  CHSC26279  Downingia ornatissima J. H. Moyer 1975-5-6 23 Butte In ditch along Hiway 99 ca. 17.6 km. se of Chico, near the junction to Hiway 149. 65 Comment
  CHSC7081  Downingia ornatissima var. ornatissima H. Alger 1969-4-25 21 Butte 0.7 mi e of Chico, 15 yds s of Skyway. 60 Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 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
  CHSC4138  Draba verna var. aestivalis R. Carter 1966-3-13 298 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  CHSC44040  Draperia systyla L. P. Janeway 1987-5-10 2052 Butte Near bridge over West Branch Feather River, ca 6 mi from Stirling City. On steep gravelly slope. 754 Comment
  UC726882  Draperia systyla A. A. Heller 1938-5-28 15128 Butte Along Feather River Highway near Pulga 725 Comment
  RSA129731  Draperia systyla C. G. Albertus 1933-7-26 54 Butte 1/2 mile south of Barnum Mill. Chico Quadrangle. 1372 Comment
  UCD170794  Drosera rotundifolia Barry Rice 2017-9-4 BR- 170901 Butte Butte Creek. 1500 Comment
  UCD99547  Drosera rotundifolia Barry Rice 2005-7-3 BR 050702 Butte in meadow draining into Snag Lake, on the southeast side of Summit Road. 1770 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  POM34663  Drymocallis glandulosa var. glandulosa C. C. Bruce 1898-05 2436 Butte Butte Creek. Comment
  CHSC28884  Dryopteris arguta M. S. Taylor 1980-2-17 2355 Butte On s side of lower Forbestown Rd, ca. 3 mi w of Forbestown. 609 Comment
  CAS-BOT-BC70855  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte along Old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC35993  Dudleya cymosa J. D. Jokerst 1982-5-1 1557 Butte At Phantom Falls, S branch of Coal Cr. Canyon. North Table Mountain. 388 Comment
  JEPS115507  Dudleya cymosa subsp. cymosa Lowell Ahart 2009-5-15 15682 Butte About 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  CHSC94591  Dysphania ambrosioides Lowell Ahart 2006-9-11 13281 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC113163  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  JEPS124156  Dysphania botrys Lowell Ahart 2015-11-7 20617 -A 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
  CHSC76310  Echinochloa colona Lowell Ahart 1999-9-21 8282 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
  CHSC76824  Echinochloa colona L. P. Janeway 1997-10-5 5366 Butte Campus of California State University, Chico; within the City of Chico. Around Holt Hall. 60 Comment
  CHSC99647  Echinochloa colona H. Koeth 2007-5-5 Butte End of Santa Clara Ave. off Rose Ave., Chico. UTM 10 609663E 4406233N. 57 Comment
  RSA722301  Echinochloa colona R. R. Halse 2006-8-2 6985 Butte At edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 29 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
  SEINET10509320  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 C Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  RSA796045  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC44295  Egeria densa V. Oswald 1988-6-8 3363 Butte Small pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  UCD150361  Egeria densa William Anderson 1964-8-16 s.n. Butte Gridley-Colusa Rd. and Farris Rd. Comment
  JEPS123908  Elatine Lowell Ahart 2015-4-24 20072 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC45275  Elatine heterandra Vernon Oswald 1988-4-26 3282 Butte Gray Lodge Waterfowl Management Area, on the n side of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  SEINET10447970  Elatine rubella Mary Susan Taylor 1982-4-28 Taylor 4356 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
  CHSC55610  Eleocharis acicularis L. P. Janeway; C. A. Janeway 1986-8-31 1818 Butte Along Philbrook Reservoir near Picnic Area. Along east end of the lake. 1691 Comment
  CHSC116007  Eleocharis atropurpurea Lowell Ahart 2015-10-2 20536 Butte On the north part of Horseshoe Lake, about 100 yards north of the Rod and gun club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC97253  Eleocharis atropurpurea Lowell Ahart 2007-8-19 14489 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC113372  Eleocharis engelmannii Lowell Ahart 1980-7-4 2465 Butte Along Forbestown Road. 750 Comment
  CAS-BOT-BC113374  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, Honcut, ca 2.5 mi N and 1/4 mi E of Honcut. 50 Comment
  CHSC78186  Eleocharis macrostachya Lowell Ahart 2000-5-27 8404 Butte Boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC78188  Eleocharis macrostachya Lowell Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  JEPS98504  Eleocharis obtusa var. obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10971840  Eleocharis ovata Mary Susan Taylor 1978-7-22 Taylor 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC78200  Eleocharis quinqueflora Lowell Ahart 2000-5-30 8411 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC78312  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS98350  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte 5 air miles E of Magalia (by the road culvert, NW side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  JEPS98613  Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte Seeps, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  RSA716569  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  SEINET7587015 Image available Eleocharis quinqueflora Lowell Ahart 2000-7-7 8555 Butte Justwest of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CHSC113146  Eleocharis radicans Lowell Ahart 2013-11-13 19238 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC78569  Eleocharis radicans Lowell Ahart 2000-9-4 8686 Butte Along the west margin of a large pond, on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA38984  Eleocharis radicans L. Ahart 2000-9-4 8686 Butte Along the west margin of a large pond, on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 0 Comment
  CHSC109751  Eleusine indica Lowell Ahart 2012-10-28 18532 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC28573  Elodea canadensis M. S. Taylor; J. D. Jokerst 1979-11-11 2278 Butte Irrigation ditch, at jct with Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  SEINET10929812  Elymus caput-medusae Lowell Ahart 1972-5-8 Ahart 107 Butte Ca. 1/2 typical size. On rolling hills, dry soils. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  UC600746  Elymus glaucus E. B. Copeland July, 1929 Butte Jones Creek Jonesville 1500 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
  CHSC71212  Elymus glaucus subsp. glaucus Lowell Ahart 1998-6-3 7973 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC49493  Elymus sierrae Vernon Oswald 1983-8-17 996 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2097 Comment
  CAS-BOT-BC204203  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1981-7-7 2928 Butte Ca. 0.5 mi. W of the Forbestown Res Ne of Forbestown 750 Comment
  CHSC42952  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-7-8 5805 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CDA2042  Elytrigia elongata L. Ahart 2000-7-17 8595 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  CHSC78406  Elytrigia pontica subsp. pontica Lowell Ahart 2000-7-17 8595 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC23720  Enemion occidentale L. V. Ritter 1969-3-28 100 Butte N side of Wilenor Lake, ca .5 mi. e of dam. Comment
  CHSC31764  Epilobium campestre L. Ahart 1978-6-8 1772 Butte On bottom of small vernal pools and swales. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS104320  Epilobium campestre Lowell Ahart 2003-6-23 10313 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC28433  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-10-12 372 Butte 1.0 mi. N.E. of end of Upper Park Rd., 50 mrt. E. of Big Chico Cr. 213 Comment
  CHSC41314  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-7-22 550 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC75969  Epilobium ciliatum subsp. ciliatum Lowell Ahart; Vernon H. Oswald 1999-8-13 8171 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
  JEPS115361  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2009-7-9 16003 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS94570  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-7-11 7750 Butte se Cold Creek (edge of small stream from springs, s of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road (or about 2 air ne) from Stirling City) 1219 Comment
  CHSC102619  Epilobium densiflorum Lowell Ahart 2009-7-9 16027 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
  CHSC65647  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end. Along area of dirt road 21N25A. 1079 Comment
  CHSC84157  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the north side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  JEPS104290  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the n side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  JEPS87376  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 1993-7-22 7091 Butte e side of campground rd about 1/4 mi nw bridge across Fall River (about 6 air mi ne of Feather Falls); Fall River 1036 Comment
  CHSC105809  Epilobium hornemannii subsp. hornemannii Lowell Ahart 2010-9-21 17213 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  POM184018  Epilobium lactiflorum H. F. Copeland 1932-08 s.n. Butte Butte County: In Springs near Crest of ridge SE of the head of Butte Creek. 2000 Comment
  CHSC92730  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  UCD106506  Epilobium minutum Lewis S. Rose 1963-6-2 63071 Butte 2 miles S of Pulga. North fork of Feather River. 579 Comment
  CHSC46681  Epilobium oregonense V. Oswald; L. Ahart 1989-8-15 3935 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In a meadow adjacent to a lake n of and visible from the road. 1752 Comment
  CHSC111728  Epilobium torreyi Lowell Ahart; Doug Upton 2012-6-15 18198 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  CHSC28760  Epipactis gigantea J. D. Jokerst 1979-6-16 142 Butte Upper Bidwell Park, Big Chico Cr. 167 Comment
  SBBG128078  Epipactis gigantea L. Ahart 2009-6-3 15833 Butte E side of Big Chico Crk, SW of the meadow, ca. 30 yards W of Ten Mi House Rd, Upper Bidwell Park, ca. 3/4 mi W of Hwy 32 209 Comment
  CAS-BOT-BC57995  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  CHSC25287  Equisetum arvense M. S. Taylor 1977-7-15 1423 Butte Along w branch of the Feather River, ca 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  CAS-BOT-BC57856  Equisetum hyemale subsp. affine Lowell Ahart 1987-5-27 5713 Butte Along the N. Fork of the Feather River, near the Poe Power House, about 2 mi. se. of Jarbo Gap. 271 Comment
  CAS-BOT-BC57254  Equisetum laevigatum Lowell Ahart 1989-5-28 6288 Butte south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1/4 miles west of Rocky Point, 335 Comment
  CAS-BOT-BC204457  Eragrostis cilianensis Willis H. Wheeler 1945-10-11 s.n. Butte U.S. Plant Introduction Garden, Chico Comment
  CHSC51033  Eragrostis cilianensis Lowell Ahart 1990-7-15 6556 Butte Along a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  SEINET10508795  Eragrostis diffusa Lowell Ahart 1984-8-19 Ahart 4790 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 Comment
  CHSC112736  Eragrostis pectinacea var. pectinacea Lowell Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC51037  Eragrostis pectinacea var. pectinacea Lowell Ahart 1990-7-4 6544 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
  CHSC47617  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 667 Butte On the bottom of a swale, Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC92520  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-20 1218 Butte South of Middle Fork of Feather River. Along road 22N62. On the east side of the canyon. UTM 10 S 650834,4397612. 859 Comment
  CAS-BOT-BC131514  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC28774  Ericameria bloomeri J. D. Jokerst 1979-9-23 358 Butte W. slope of Humboldt Peak, 1/4 mi. E. of Humboldt Summit (Humboldt Road). 2042 Comment
  CAS-BOT-BC298292  Ericameria nauseosa var. speciosa H. E. Brown 1896-11-15 46 Butte Near Clear Creek 53 Comment
  CHSC69447  Erigeron canadensis Lowell Ahart 1997-9-6 7886 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC110126  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the rail-road tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Knoll flattened in mining rock long ago? 91 Comment
  JEPS87160  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC11839  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 491 Butte Above Jonesville. 1800 Comment
  CAS-BOT-BC295162  Erigeron inornatus Lowell Ahart 1983-8-16 4284 Butte Along the edge of Humboldt Road, about 3 miles south-west of Butte Meadows 1450 Comment
  CAS-BOT-BC295164  Erigeron inornatus Lowell Ahart 1983-7-29 4245 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  POM33313  Erigeron inornatus var. inornatus C. C. Bruce 1897-05 1990 Butte Little Chico. Comment
  SEINET10474628  Erigeron lassenianus Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 a Butte T25N R5E ne 1/4 sw 1/4 sec 29. Pulga NW quad. N. side of rd 25N04, ca. 0.5 mi E of its jct with 52S13 ca. 1 mi NE of Jones Mdw. ca. 6 mi NE of Stirling City. 6200 ft. 1890 Comment
  CAS-BOT-BC295467  Erigeron lassenianus var. lassenianus E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CHSC48150  Erigeron lassenianus var. lassenianus Vernon Oswald 1984-7-2 1340 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  CHSC69443  Erigeron petrophilus var. sierrensis Lowell Ahart 1997-9-6 7889 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  JEPS95007  Erigeron petrophilus var. sierrensis Lowell Ahart 1997-9-6 7889 Butte about 2 air mi ne of Concow Reservoir (near the McNab Cypress Grove, near the steel power line, along sides of logging road, about 1/4 mi w of Rim Road) 731 Comment
  CHSC42392  Erigeron philadelphicus Lowell Ahart 1987-6-9 5741 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
  JEPS128619  Eriochloa contracta Lowell Ahart 2017-8-1 21654 Butte Park west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  RSA769683  Eriodictyon californicum L. Ahart 2009-4-22 15591 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
  CAS-BOT-BC259405  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  UCD100510  Eriogonum nudum W. R. Powell 1968-11-12 1614 Butte George Ellis Ranch, 200 yards north of the LaPorte Road and 4 miles southwest of Bangor. 91 Comment
  RSA781347  Eriogonum nudum var. deductum Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Humboldt road. 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
  CAS-BOT-BC268614  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  CAS-BOT-BC267907  Eriogonum umbellatum Lowell Ahart 1981-7-7 2929 Butte About 0.5 mile west of the Forbestown Reservoir, north-east of Forbestown 750 Comment
  RSA0048238  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Feathr River Cyn., Hwy. 70. 1066 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
  JEPS110205  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the 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
  SEINET10821160  Eriophyllum lanatum Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7029 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  UCD80057  Eriophyllum lanatum CNPS SN Foothill Team 2005-5-4 SNFN 0201 g Butte City of Chico, Upper Bidwell Park,on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park road, and about 110 m upslope of the road. 273 Comment
  CAS-BOT-BC308080  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-9 64 -51 Butte North of Jarbo Gap, Sierra Nevada Comment
  CAS-BOT-BC301305  Eriophyllum lanatum var. croceum A. A. Heller 1913-6-7 10806 Butte Near Stirling 1074 Comment
  CAS-BOT-BC308161  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  HSC38067  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2475 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  POM66852  Eriophyllum lanatum var. grandiflorum C. C. Bruce 1897-06 1989 Butte Little Chico Comment
  UC1118267  Eriophyllum lanatum var. grandiflorum P. L. Johannsen 1936-4-16 927 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle, Bolt Creek 1432 Comment
  UC179658  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte near Butte Meadows; Little Summit Comment
  UC426987  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1930-7-11 492 Butte Jonesville 1550 Comment
  CHSC101084  Erodium brachycarpum Lowell Ahart; John Dittes 2009-3-20 15509 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  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
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  CHSC37504  Eryngium castrense J. D. Jokerst 1983-1-17 1676 Butte Top of North Table Mt. Ca 1/2 mile north of Cherokee Rd at the east edge of mesa. 381 Comment
  UC764741  Eryngium castrense R. F. Hoover 1936-5-20 1156 Butte 8 mi. n. Oroville Comment
  SD225723  Eryngium vaseyi Carol Witham, Jennifer Buck 2001-5-3 186 Butte Off Hwy 99, 2 mi north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072 Comment
  CHSC4257  Erysimum capitatum var. capitatum J. E. Bowlin 1967-3-24 36 Butte Along roadside, Hwy 70 at Cresta Powerhouse. Comment
  SEINET8245391  Erythranthe bicolor A. A. Heller 1914-5-17 11338 Butte none. 732 Comment
  CHSC44754  Erythranthe breweri R. Banchero 1980-6-16 232 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, ca 5 mi NE of the jct of Humbolt Rd and Hwy 32. 1292 Comment
  CHSC46299  Erythranthe floribunda Vernon Oswald 1989-5-31 3793 Butte Wurlitzer Unit, Vina Plains Preserve. Locally abundant in moist soil along the bottom of the s bank of Pine Creek near the e end of the Unit. 56 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC40886  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte About 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  CHSC43164  Erythranthe glaucescens R. A. Schlising 1980-6-30 3803 Butte Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. Comment
  CHSC44677  Erythranthe glaucescens R. Banchero 1980-4-11 105 Butte Along Honeyrun Rd ca 3.6 mi NE of the Covered Bridge, Ca 3.7 mi SW of Paradise. 243 Comment
  CHSC44799  Erythranthe glaucescens R. Banchero 1980-3-15 63 Butte Along Cohasset Hwy 11.9 mi N of Chico, 5.6 mi NE of first jct of Cohasset Hwy and Rock Creek Rd. 323 Comment
  CHSC44821  Erythranthe glaucescens R. Banchero 1980-4-26 126 Butte Along the Cohasset Hwy 2.3 mi NE of its jct with Keefer Rd, 3.9 mi SW of the town of Cohasset. 182 Comment
  CHSC45718  Erythranthe glaucescens M. S. Taylor 1974-4-30 193 Butte The Horse Trough on side of Cohasset Rd., ca. 6 mi n of Chico Municiple Airport. Comment
  CHSC82612  Erythranthe glaucescens Tara Morgan 2002-4-23 34 Butte Found along the walking down the south rim trail located on the east side of Big Chico Creek. Located down from the green gate and left at the split in the trail to a seep area. 389 Comment
  CHSC90151  Erythranthe glaucescens Kevin J. Kearns 1980-4-24 10 Butte About 50 yds south of Butte Creek and 300 yds west of the Covered Bridge (Covered Bridge is 35 yds southeast of intersection of Humbug and Honey Run Road), 6.5 mi east-southeast of Chico. 140 Comment
  CAS-BOT-BC153865  Erythranthe glaucescens Mrs. C. C. Bruce 1897-5-1 2104 Butte Butte Creek & Iron [canon] Canyon Comment
  CHSC102412  Erythranthe guttata Lowell Ahart 2009-6-19 15926 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC105773  Erythranthe guttata Christopher T. Ivey 2007-7-26 372 Butte Lassen National Forest, Scotts John Meadow. 1750 Comment
  CHSC31871  Erythranthe latidens L. Ahart 1978-5-1 1678 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42716  Erythranthe microphylla Lowell Ahart 1987-6-9 5735 Butte On a sand bar on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
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Jun 25 2013
  CHSC44673  Erythranthe nasuta R. Banchero 1980-4-26 124 Butte Along the Cohasset Hwy 2.3 mi NE of its jct with Keefer Rd, 3.9 mi SW of the town of Cohasset. 182 Comment
  SEINET8381874  Erythranthe primuloides C. E. Wickstrom 1964-9-12 62 Butte at Butte Meadows ca. 160 ft. sw of where stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. Comment
  SEINET10469667  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3457 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd, ca. 1/10 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap, 18 mi n of Oroville; 2600 ft. 792 Comment
  CHSC32652  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3422 Butte N side of West Branch Feather River, just w of bridge on Ponderosa Way (Jordan Hill Rd), ca. 1 mi ne of Magalia. 487 Comment
  CHSC36220  Erythronium multiscapideum Lowell Ahart 1982-4-8 3270 Butte Near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  CHSC39632  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte 3/8 mile south-west of Forbestown Res., about 4 miles north-east of Forbestown. On the east side of Woodleaf Creek. 450 Comment
  CAS-BOT-BC504531  Erythronium multiscapideum Lowell Ahart 1980-3-26 2052 Butte Along Swedes Flat Road, near Bangor Comment
  CAS-BOT-BC110542  Eschscholzia John Thomas Howell 1955-6-15 30506 Butte West Branch of North Fork of Feather River. 182 Comment
  CAS-BOT-BC402647  Eschscholzia caespitosa Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CAS-BOT-BC402969  Eschscholzia californica A. A. Heller; H. E. Brown 1902-5-6 5456 Butte Berry Canyon (Near Clear Creek) Comment
  UC855194  Eschscholzia californica A. A. Heller 1938-4-17 15041 Butte slope back of Salmon Hole (e of Chico); Chico Creek 121 Comment
  CAS-BOT-BC419497  Eschscholzia lobbii Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  CAS-BOT-BC419507  Eschscholzia lobbii A. A. Heller 1913-3-9 10681 Butte Hills two miles north of Oroville Comment
  UC1303106  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte near Hooker Oak (e of Chico) Comment
  UC176139  Eschscholzia lobbii A. A. Heller 1913-3-9 10681 Butte 2 mi n Oroville Comment
  UC85512  Eschscholzia lobbii Mrs. R. M. Austin Apr. 1899 93 Butte near Chico Comment
  UCD95350  Eschscholzia lobbii Curtis Clark 1975-4-20 474 Butte Cherokee Road, 6 miles NE of junction with Table Mountain Road. Comment
  CHSC44278  Euonymus occidentalis var. occidentalis V. Oswald; W. Dempsey, D. Perske 1988-6-15 3386 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Near the bottom of a canyon slope along the W. Branch of Mud Creek. 853 Comment
  UCD34285  Euphorbia hooveri Beecher Crampton 1978-8-21 9659 Butte Ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  CAS-BOT-BC202424  Euphorbia ocellata A. A. Heller 1913-9-24 11143 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CAS-BOT-BC202422  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte About 3 miles east of Chico Comment
  CAS-BOT-BC202428  Euphorbia ocellata John Thomas Howell 1962-6-16 37586 Butte 3.5 mi. n. of Pentz 396 Comment
  CHSC108177  Eurybia radulina L. P. Janeway 2011-8-17 10661 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. 912 Comment
  CHSC43242  Euthamia occidentalis Lowell Ahart 1987-9-29 5906 Butte On a road cut near a wash, near the dirt road, about 1 mile east of the Golden Trout Crossing across the South Fork of the Feather River, about 2 miles west of the Sly Creek Reservoir. 1158 Comment
  SEINET10474656  Evax caulescens Lowell Ahart 1983-5-12 Ahart 3975 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CDA38775  Festuca bromoides L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte On the north side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC118578  Festuca californica Nancy Groshong 2017-4-30 2 Butte Magalia Serpentine. South side of Coutelenc Road east of Skyway. 701 Comment
  CAS-BOT-BC278300  Festuca californica subsp. californica Lowell Ahart 1985-5-15 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC109857  Festuca californica var. californica L. P. Janeway 2012-6-7 10870 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
  CHSC49549  Festuca rubra Vernon Oswald 1988-5-17 3313 Butte Just w of the dam of Sly Creek Reservoir. Along the edge of the road. 1097 Comment
  CAS-BOT-BC278629  Festuca subulata Lowell Ahart 1981-9-15 3159 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  CHSC74165  Festuca subulata B. Castro; L. Gehrung 1998-6-23 796 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, ca 200 ft W of Oro-Quincy Hwy on E side of ridge overlooking Get-Up-and-Get Creek. Ca 100 ft above creek channel. 1213 Comment
  SEINET10507967  Festuca subulata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4107 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  CHSC76015  Fimbristylis autumnalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8145 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC42109  Foeniculum vulgare Lowell Ahart 1986-10-16 5405 Butte Along Pondrosa Way, about 3/4 mile south-west of the Ponderosa Dam, about 3 1/4 miles north-west of Forbestown. 396 Comment
  UC129375  Fragaria vesca Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC95182  Fragaria virginiana R. D. Fischer 2005-6-5 826 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  CHSC109568  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 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
  CAS-BOT-BC55649  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  CAS-BOT-BC55650  Frangula purshiana A. A. Heller 1928-6-16 14690 Butte in the yellow pine forest at Butte Meadows Comment
  SEINET7417508 Image available Frangula purshiana A. A. Heller 1919-1 13157 Butte Feather River near Stirling [City] Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  CHSC20105  Fraxinus dipetala M. S. Taylor 1975-4-25 498 Butte On e side of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  HSC66271  Fremontodendron californicum M. S. Taylor, J. D. Jokerst 1980-5-15 2638 Butte 1/4 mi. E of Cohasset Rd. on Cohasset Ridge, 9 mi. NE of Chico 396 Comment
  CAS-BOT-BC504376  Fritillaria Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC115500  Fritillaria eastwoodiae L. P. Janeway 2015-3-18 11641 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CHSC88621  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 268 Butte Plumas National Forest. 792 Comment
  SDSU19716  Fritillaria eastwoodiae Sean Ryan 2010-4-17 33 Butte North of Magalia on shady NE facing roadcut on west side of Jordan Hill Road, approximately 1.1 miles from its intersection with Coutolenc Road. 543 Comment
  SDSU19718  Fritillaria eastwoodiae Sean Ryan 2010-4-17 36 Butte Off hwy 70, along east side of Old Truex Road, approximately 90 yards SW of the intersection of Truex Road and Trevor Road, just north of Lake Oroville. North facing steep roadcut. 302 Comment
  CAS-BOT-BC505285  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Above the road cut bank along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  CAS-BOT-BC130427  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  CHSC33392  Fritillaria pluriflora Paula Minton 1981-4-1 Butte Wurlitzer Ranch, northwesternmost Butte County, off Cana-Pine Creek Road. 57 Comment
  CHSC34223  Fritillaria recurva M. S. Taylor 1981-5-21 3784 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Feather River Hwy 70. 1005 Comment
  SEINET10500609  Galium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5523 Butte Along Rim Road (Ponderosa Way) N. of Jarbo Gap off Hwy 70, ca. 23 air mi NE of Oroville. Comment
  CHSC93456  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  CHSC11822  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 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
  SD4930  Galium bolanderi E. B. Copeland 1930-7-16 476 Butte Jonesville, damp meadow 1500 Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  CHSC36512  Galium murale L. Ahart 1982-5-29 3444 Butte Peter Ahart Ranch, ca. 1.5 mi N and 2 1/4 mi E of Honcut. 50 Comment
  UCSB63626  Galium nuttallii subsp. nuttallii Kirkpatrick, R. 1972-4-23 Butte ca. 30 yds. s Hwy. 32 and ca. 2 mi e Crown Point Rd. 609 Comment
  CHSC46405  Galium parisiense Lowell Ahart 1989-5-23 6259 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  SEINET10500636  Galium parisiense Mary Susan Taylor 1979-5-6 Taylor 2000 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET10500739  Galium porrigens var. tenue Mary Susan Taylor 1981-3-18 Taylor 3426 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CHSC46220  Galium sparsiflorum subsp. glabrius Pauleen Broyles 1987-7-5 1026 Butte Along Butte Creek Trail, ca 0.1 km S of the crossing of Garland Road. Comment
  UCD121927  Galium tricornutum D. B. Marcum 1969-4-12 20 Butte 18.6 miles north of Marysville on State Highway 70. 24 Comment
  CHSC51012  Galium trifidum var. pacificum Lowell Ahart 1990-7-15 6554 Butte West of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 268 Comment
  SEINET10500750  Galium trifidum var. pusillum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4196 A Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC30778  Galium triflorum M. S. Taylor 1978-7-19 1740 Butte Cherry Hill Campground on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  UC392192  Galium triflorum E. B. Copeland July 1929 Butte Jonesville 1550 Comment
  CHSC107395  Garrya fremontii Blake McSorley 2010-2-16 Butte Crownpoint Road and Hwy 32. 579 Comment
  CAS-BOT-BC282602  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CAS-BOT-BC282604  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville Comment
  CHSC91465  Gastridium phleoides Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS98425  Gastridium ventricosum Lowell Ahart 2000-5-13 8340 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CDA43074  Gaura L. P. Janeway, B. Castro 2011-6-5 10361 Butte Sacramento Valley.; Chico; Northeast side of Hwy 99 just southeast of Cohasset Road overcrossing; Arroyo Chico. Comment
  UC398937  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Butte Creek Jonesville Comment
  JEPS102831  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  CDA34698  Genista monspessulana L. Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC50047  Geranium dissectum Lowell Ahart 1990-4-8 6434 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC34809  Geranium molle M. S. Taylor 1980-4-27 2566 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CHSC3974  Geranium molle L. R. Alexander 1967-4-11 10 Butte Found at intersection of Honey Run Rd. and Humbug Road near covered bridge. 91 Comment
  SBBG128083  Geranium purpureum L. Ahart 2008-5-12 14762 Butte E side of Ponderosa Way, ca. 1 mi SW of the Ponderosa Dam, ca. 2.25 mi NW of Forbestown 670 Comment
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC40921  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-15 4989 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  POM74343  Gilia capitata subsp. pedemontana Anonymous 1897-1 s.n. Butte Chico. Comment
  RSA754853  Gilia capitata subsp. pedemontana L. Ahart 2009-5-30 15784 Butte About 60-100 yards north of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile W of Highway 32, about 10 miles NE of Chico. 269 Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC38593  Gilia tricolor Vernon Oswald 1983-3-9 145 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 213 Comment
  CAS-BOT-BC266596  Githopsis pulchella David D. Keck 1933-5-30 2403 Butte 3 miles N of Chico on Richardson Springs Road Comment
  SEINET10840482  Githopsis pulchella subsp. campestris Carter 1965-5-15 Carter 201 Butte On east side of Highway 32, 10.7 miles northeast of 99E overpass at Chico 305 Comment
  UC1586633  Glinus lotoides Vernon Oswald and Lowell Ahart 1990-10-11 4460 Butte about 4 mi s of Jarbo Gap (Dark Canyon arm of Lake Oroville, on bed of Dark Canyon Creek); Dark Canyon arm of Lake Oroville 243 Comment
  SEINET10473777  Gnaphalium chilense Mary Susan Taylor 1978-9-9 Taylor 1924 Butte Along the Skyway in the village of Inskip. 1468 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
  SEINET10475069  Gnaphalium luteoalbum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4151 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC302477  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam 274 Comment
  CAS-BOT-BC302480  Gnaphalium palustre Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UC1609234  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
  SEINET10839605  Goodyera oblongifolia Mary Susan Taylor 1978-9-9 Taylor 1920 Butte Along the Skyway in the village of Inskip. 1468 Comment
  UCD138957  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte ca. 0.2 mile north of Lost Creek Reservoir Dam, ca., 2.2 miles northwest of Strawberry Valley. 1100 Comment
  OBI21642  Grindelia camporum Tracey and Viola Call, Viola Call 1964-6-28 2310 Butte 5 mi S of the town of Berry Creek, 4 mi N of Feather River 305 Comment
  CHSC44189  Grindelia camporum var. camporum Vernon Oswald 1988-6-22 3511 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Rice paddy in the southeast part of the ranch. 53 Comment
  CHSC14007  Grindelia hirsutula var. davyi D. Isle 1969-5-17 478 Butte On e side of turn-off from Upper Bidwell Park to Bare Hole, in Upper Bidwell Park, Chico. 182 Comment
  JEPS95865  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CAS-BOT-BC306289  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles south of Cherokee on road to Oroville Comment
  SEINET10473800  Helianthus annuus subsp. lenticularis Mary Susan Taylor 1977-8-16 Taylor 1439 Butte Abundant on both sides of Williams Road, N of its junction with Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC75904  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 730 Comment
  UCD146601  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte above Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  CDA13705  Helianthus bolanderi G. F. Hrusa 1997-8-5 14065 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  CDA6540  Helianthus bolanderi A. C. Browne 1951-8-23 Butte Durham. 0 Comment
  CHSC47989  Heliotropium curassavicum Vernon Oswald 1983-6-28 778 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  CHSC108137  Heliotropium europaeum Lowell Ahart 2011-10-30 17732 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  UCD169354  Helminthotheca echioides Lowell Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, south of Big Chico Creek, Lower Bidwell Park Chico. 62 Comment
  CAS-BOT-BC314998  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
  CAS-BOT-BC314992  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi. W of 23N15 ca. 1.5 mi. S of its jct. with Four Trees Road, ca. 2 air mi. W of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CAS-BOT-BC309783  Hemizonia congesta subsp. luzulifolia A. A. Heller 1913-10-7 11147 Butte Table Mountain Olive Ranch 8 miles north of Oroville 121 Comment
  CHSC26762  Hemizonia congesta subsp. luzulifolia M. S. Taylor; M. Hayes 1977-8-16 1445 Butte On s side of Pentz Rd near culvert, ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CDA7022  Hemizonia congesta subsp. luzulifolia T. C. Fuller 1964-10-6 12676 Butte Northwest corner of Hamilton City Road & Highway 99E to Chico, 2 miles north of Biggs. 0 Comment
  SEINET7014220  Hemizonia fitchii Elmer Kingsford August-1314 3383 Butte Oroville. Comment
  POM219506  Hemizonia pungens subsp. pungens H. F. Copeland 1923-8-13 545 Butte Nelson. Comment
  CAS-BOT-BC388569  Herniaria hirsuta L. P. Janeway 1993-6-3 4367 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill, along the road to Big Bar Mtn (23N28) 731 Comment
  CHSC48255  Herniaria hirsuta subsp. hirsuta Vernon Oswald 1987-4-16 2331 Butte Butte Creek Preserve on the n side of Butte Creek e of the Skyway. On a flood plain of the creek. 74 Comment
  CHSC31619  Hesperevax acaulis var. acaulis L. Ahart 1974-4-24 429 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC107891  Hesperolinon californicum L. P. Janeway 2011-6-29 10412 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CAS-BOT-BC175998  Hesperolinon californicum Lowell Ahart 1977-5-11 154 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC101829  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC29783  Heterocodon rariflorum M. S. Taylor 1980-5-27 2684 Butte At the foot of Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC44276  Heterocodon rariflorum Vernon Oswald 1988-6-14 3379 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Peak. 890 Comment
  CHSC61305  Heterocodon rariflorum Lowell Ahart 1993-7-29 7123 Butte Near a seep about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1584 Comment
  CHSC96245  Heterocodon rariflorum R. Fischer 2006-5-27 995 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  UC1609051  Heterocodon rariflorum Lowell Ahart 1993-7-29 7123 Butte about 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  SEINET10460697  Heterocodon rariflorum Taylor 1978-7-21 Taylor 1828 Butte On south side of Orovile-Quincy Highway along creek in meadow, about 14 miles north of Lake Madrone 1463 Comment
  CAS-BOT-BC143629  Heteromeles arbutifolia A. A. Heller 1913-12-5 11149 Butte In the canyon of Big Chico Creek east of Chico 91 Comment
  RSA0072450  Heteromeles arbutifolia L. Ahart 2009-11-19 16561 Butte Southwest side of the pond, about 40 yards southwest of table, about 110 yards south of Ten Mile House Road, Upper Bidwell Park, about 0.5 air mile west of Highway 32, about 10 miles northeast of Chico. 243 Comment
  RSA719537  Heteromeles arbutifolia Michael A. Vincent, K. Levings 2006-7-29 12882 Butte E of Chico along Rt 32 Comment
  SEINET10483352  Heteromeles arbutifolia Mary Susan Taylor 1975-10-29 Taylor 967 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC21004  Heuchera micrantha var. erubescens M. S. Taylor 1975-4-29 547 Butte On s side of Hwy 70, ca 25 mi ne of Oroville. Comment
  UC176201  Heuchera micrantha var. erubescens A. A. Heller 1913-6-7 10822 Butte West Branch of the North Fork of Feather River near Stirling; Feather River 914 Comment
  CHSC45685  Hieracium albiflorum Vernon Oswald 1983-7-6 812 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CAS-BOT-BC55328  Hirschfeldia incana John Thomas Howell 1962-6-16 37570 Butte Sierra Nevada. Magalia. 731 Comment
  UC177574 Image available Hoita hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road Sierra Nevada Mountains; Humboldt Road, Butte Co., Sierra Nevada Mts. 1066 Comment
  UC866223  Hoita macrostachya Lewis S. Rose 1939-6-7 39239 Butte 3 mi s Pulga; North Fork of Feather River 609 Comment
  RSA443118  Hoita macrostachya L. Ahart 1985-6-30 5080 Butte About 2.5 miles northeast of Forbestown. 869 Comment
  CAS-BOT-BC280713  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CDA42902  Holcus lanatus L. Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. Comment
  JEPS110329  Holcus lanatus Lowell Ahart 2006-7-25 13056 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
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) 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
  SEINET10968248  Hordeum depressum Mary Susan Taylor 1978-5-7 Taylor 1598 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS117881  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  CHSC8217  Hordeum vulgare D. McClain 1969-5-1 71 Butte 5 ft. s.w. of Highway 99E, 6 1/2 mi. s. of Chico. 54 Comment
  CHSC48849  Horkelia fusca subsp. parviflora Vernon Oswald 1985-7-2 1882 Butte Skyway (Bull Hill Rd.) at Coon Creek, 5.5 mi se of Butte Meadows. On bank of creek in a meadow. 1554 Comment
  CAS-BOT-BC536252  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CAS-BOT-BC536254  Horkelia tridentata var. tridentata A. A. Heller 1915-6-27 12043 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC536265  Horkelia tridentata var. tridentata Javier Penalosa 1962-6-18 2470 Butte Near confluence of French and Peavine Creeks 640 Comment
  CHSC881  Hosackia oblongifolia 1954-5-30 Butte Rag Dump 5 above Paradise. 1127 Comment
  CHSC26852  Hosackia oblongifolia var. oblongifolia M. S. Taylor; M. Hayes 1978-6-24 1640 Butte On Ernies Island in Butte creek, at tis jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC71638  Hosackia oblongifolia var. oblongifolia Vernon H. Oswald 1998-8-11 9465 Butte USFS 23N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  UCD128239  Hydrocotyle umbellata L. Ahart 1981-9-26 3212 Butte north-east of Palermo. 80 Comment
  UC204465  Hypericum formosum var. scouleri A. A. Heller 1914-7-23 11599 Butte along streams in Chico meadows Chico 1219 Comment
  JEPS107575  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  SEINET7073600  Iris 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
  CHSC31179  Iris hartwegii subsp. hartwegii M. S. Taylor 1980-5-4 1982 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Road with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC24910  Iris macrosiphon T. L. Reynolds 1976-4-23 56 Butte 0.3 mi ne of Covered Bridge, 7.2 mi ese of Chico. Comment
  CHSC90017  Iris macrosiphon Peggy Fain 1991-4-6 11 Butte N. side Richardson Springs Road ca. 4 km. from intersection with Cohasset Highway. 152 Comment
  CHSC87577  Iris pseudacorus R. D. Fischer 2004-4-16 129 Butte Collected in backyard pond from house on Floral Avenue in Chico. Plants in turn were collected from another Chico home and they in turn were collected from margins of Edgar Slough (Comanche Creek) next to Hwy 99, south Chico. 60 Comment
  SDSU1943  Isoetes bolanderi E. B. Copeland 1929-6-29 Butte Above Jonseville. 533 Comment
  CHSC117402  Isoetes howellii Lowell Ahart 2016-5-30 20881 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  JEPS104157  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  SD111888  Isoetes howellii Barbara Ertter, Jeff Strachan, Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch, ca 2.5 miles north northeast of Honcut between Oroville and Marysville, dry ditches in oatfield near pond 29 Comment
  CAS-BOT-BC69948  Isoetes howellii Lowell Ahart 1974-5-30 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC54295  Isoetes nuttallii Vernon H. Oswald; Lowell Ahart 1991-6-5 4641 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek on the west side of Hwy 32, ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 853 Comment
  SD116543  Isoetes nuttallii Barbara Ertter, Jeff Strachan, Lowell Ahart 1980-5-7 3289 Butte Peter Ahart Ranch ca 2.5 miles north northeast of Honcut between Oroville and Marysville, dry ditches in oatfields near ponds 29 Comment
  UC1586564  Isoetes nuttallii Vernon H. Oswald and Lowell Ahart 1991-6-5 4641 Butte ca 1.5 air mi nw Platte Mt Lookout (between Forest Ranch and Lomo, dirt rd to Minnie-Ha-Ha Mine on Big Chico Creek on w side of Hwy 32) 853 Comment
  CAS-BOT-BC112446  Isolepis cernua Lowell Ahart 1988-5-29 6013 Butte Ca. 1/10 mi NE of the old barn, ca. 1/2 mi NE of the Honcut Cemetery, Joie Osgood Ranch 60 Comment
  JEPS122001  Isolepis setacea Lowell Ahart 2014-5-13 19467 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, about 11 miles (air) east of Oroville. Comment
  JEPS98569  Isolepis setacea Lowell Ahart 2000-6-6 8454 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC3283  Juglans californica var. hindsii M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CHSC109602  Juglans hindsii Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwwell Park, Chico. 76 Comment
  CHSC112884  Juncus acuminatus Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.8 air mi E of Hwy 99, in N end of Thermalito Afterbay, ca 0.3 mi S of Tres Vias Rd. on E side of hill toward upper end of S-trending peninsula. 42 Comment
  UC1594712  Juncus acuminatus Lowell Ahart 1992-7-23 6827 Butte about 2 mi w of Oroville Dam (near Longs Bar Monument, on n side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC28657  Juncus articulatus J. D. Jokerst 1979-10-12 375 Butte 1.0 mi. N. E. of end of Upper Park Rd., 50 met. E. of Big Chico Cr. 213 Comment
  CHSC96013  Juncus articulatus L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8823 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  JEPS114980  Juncus brachyphyllus Lowell Ahart 2008-6-13 14821 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  JEPS98493  Juncus brachyphyllus Lowell Ahart 2000-6-27 8512 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  CHSC113522  Juncus bufonius var. bufonius Lowell Ahart 2014-7-7 19593 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC32368  Juncus bufonius var. bufonius J. D. Jokerst 1980-6-14 831 Butte Big Bald Rock, N of Lake Oroville and E of Berry Cr. 914 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
  CHSC43791  Juncus bufonius var. congestus Vernon Oswald 1984-4-22 1161 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near Parking Area O e of Salmon Hole. 182 Comment
  CHSC35700  Juncus capitatus J. D. Jokerst 1982-5-1 1548 Butte Top of North Table Mt. SE of Cherokee Rd near the Mesa's edge ca 300 met SE of Rd. 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
  UCD141418  Juncus capitatus Lowell Ahart 1973-5-24 227 Butte Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1562371  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  CHSC78333  Juncus dubius Lowell Ahart 2000-6-17 8485 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC99750  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  RSA725034  Juncus effusus subsp. pacificus L. Ahart 2006-9-13 13324 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of highway 70, about 2 3/4 miles northeast of pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  UC183502  Juncus effusus subsp. pacificus A. A. Heller 1913-6-4 10773 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CHSC39337  Juncus ensifolius Lowell Ahart 1983-6-26 4137 Butte Found along the edge of the East Fork of Canyon Creek, near Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC96319  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Northern High Sierra Nevada. 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
  JEPS113872  Juncus ensifolius Lowell Ahart 2007-7-15 14303 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  SBBG121549  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte E side of Encina Grand Rd (Bloomer Hill Rd), ca. 50 yards N of the home, ca. 0.25 W of Bloomer Hill 808 Comment
  SEINET10938237  Juncus ensifolius Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4137 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
  CHSC44444  Juncus howellii Lowell Ahart 1988-6-23 6071 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
  CHSC96955  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 762 Comment
  JEPS108585  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Northern High Sierra Nevada. Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. Nest to small creeklet 969 Comment
  SBBG128428  Juncus laccatus L. Ahart 2011-8-19 17641 Butte ca. 0.5 mi N of the Lost Crk Reservoir Dam, ca. 4.5 mi N of Clipper Mills 1266 Comment
  UC1561853  Juncus leiospermus var. ahartii Barbara Ertter with Lowell Ahart 1986-4-13 5891 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  CHSC111365  Juncus leiospermus var. leiospermus Lowell Ahart 2014-5-4 17984 Butte About 100 feet southwest of the lone oak tree, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 348 Comment
  JEPS110155  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, 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 346 Comment
  CHSC31927  Juncus nevadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 846 Butte Chico Meadows, 1.1 mi N of Humboldt Rd adjacent to Scout Rd., community of Butte Meadows. 1341 Comment
  CHSC59022  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte In a small meadow, about 1/4 mile northeast of the Carr Mine, about 2 (air) miles southeast of Snow Mountain. 1798 Comment
  UC1594631  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  JEPS114887  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  CHSC39361  Juncus orthophyllus L. Ahart 1983-9-17 4427 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC78341  Juncus orthophyllus Lowell Ahart 2000-6-17 8484 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  JEPS121930  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS116086  Juncus patens Lowell Ahart 2009-5-30 15779 Butte On dry soil, broad open drainage on oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC96542  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC39333  Juncus trilocularis Lowell Ahart 1983-6-26 4135 Butte Along the edge of Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC78337  Juncus trilocularis Lowell Ahart 2000-6-27 8512 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC49629  Juncus uncialis Vernon Oswald 1986-4-20 1973 Butte Peter Ahart Ranch near Honcut, in the 'home pasture.' In the bed of a vernal pool. 32 Comment
  JEPS113762  Juncus usitatus Lowell Ahart 2007-7-31 14400 B Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville 34 Comment
  SEINET10531628  Juniperus californica Lowell Ahart 1983-4-10 Ahart 3922 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC3339  Juniperus phoenicea Robert L. Smith 1966-3-4 40 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  CHSC6610  Juniperus sabina M. MacArthur 1968-6-17 295 Butte S. end of Ed. Psyc. Building on the Chico State College campus. 60 Comment
  UC426972  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville 1550 Comment
  CHSC100500  Kickxia elatine Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15410 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC51923  Kickxia elatine L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3091 Butte Just west of Murphy Slough and Golden State Island near Sacramento River. 38 Comment
  JEPS103604  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle 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
  CDA35627  Kickxia elatine J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330073 Butte Chico; Rancho Llano Seco. 0 Comment
  HSC93185  Koeleria gerardi L. Ahart 1995-5-30 7589 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  CHSC31709  Koeleria phleoides Lowell Ahart 1974-4-14 412 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC340331  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  JEPS120015  Lactuca saligna Lowell Ahart 2012-10-28 18518 Butte South of the paved park road, about 30 yards east of the restrooms and bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10473873  Lactuca serriola Lowell Ahart 1983-9-19 Ahart 4458 Butte T17N R1E section 14. Ca. 1/8 mi s of the Graylodge Wildlife Refuge headquarters, ca. 12 mi sw of Gridley. Valley Grassland; 35 m. 35 Comment
  RSA755344  Lagophylla glandulosa L. Ahart 2009-7-9 16002 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC341297  Lagophylla glandulosa Mary E. Wall 1935-11-10 s.n. Butte Pentz Comment
  CHSC31382  Lamarckia aurea J. D. Jokerst 1979-4-20 1207 Butte Top of North Table Mt., ca. .75 mi NE of the junction of Cherokee Rd and the E edge of mountain. 396 Comment
  CHSC11371  Lamium amplexicaule Lowell Ahart 1962-3-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10473883  Lasthenia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4869 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC324474  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte Along Butee Creek between Durham and Nelson 53 Comment
  CDA42855  Lasthenia fremontii L. Ahart 2012-5-2 17963 Butte In a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  HSC38105  Lasthenia gracilis Thomas W. Nelson, Jane P. Nelson 1976-5-9 2451 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  HSC68177  Lasthenia platycarpha J. P. Smith 1973-3-22 5908 Butte Along S.R. 149 just N of junction with U.S. 70 Comment
  CHSC57806  Lathyrus cicera Vernon H. Oswald; John Dittes 1992-4-28 4925 Butte Near the southern end of Libby RD in SE Paradise. 469 Comment
  CHSC63248  Lathyrus hirsutus Lowell Ahart 1994-6-6 7311 Butte On the bottom of a swale, north of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  SEINET10451847  Lathyrus jepsonii subsp. californicus Mary Susan Taylor 1978-7-21 Taylor 1833 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CHSC29795  Lathyrus latifolius M. S. Taylor; J. D. Jokerst 1980-6-14 2881 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC48508  Lathyrus nevadensis var. nevadensis Vernon H. Oswald 1984-4-16 1153 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  CHSC101151  Lathyrus sulphureus Lowell Ahart 2009-5-15 15695 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
  JEPS113199  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir 484 Comment
  SEINET10452343  Lathyrus sulphureus Mary Susan Taylor 1976-4-27 Taylor 1092 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC33353  Layia fremontii R. M. Winchell 1980-4-23 5 Butte N of Chico. Between Singer Creek and Cana-Pina Creek Road. Comment
  CHSC3539  Layia fremontii John Francis 1966-3-21 82 Butte 0.7 mile N. of intersection of Pentz Rd. and Hwy. 99E. (on Pentz Rd.). Comment
  POM183412  Layia fremontii L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  SEINET7042711  Layia fremontii A. G. Vestal 1963-5-9 s.n. Butte Ca. 14.2 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 606440mE, 4378330mN. Comment
  JEPS87140  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte about 1/2 mi se of Kunkle Reservoir (below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC103169  Lemna minuta Lowell Ahart 2009-11-19 16556 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  CHSC117706  Lemna minuta Lowell Ahart 2016-9-4 21341 Butte Rice field. Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC32121  Lemna minuta L. Ahart 1975-1-9 696 Butte In dredger pond near edge of North Honcut Creek, from Honcut go e to Dunstone Dr, stop when at s curve, then go w ca. 1/4 mi to North Honcut Creek; 2 mi n and 3 mi e of Honcut. 60 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
  SD505  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville, local in water in sunny swamp. 1550 Comment
  JEPS63255  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 miles Southwest of Forest Ranch. 548 Comment
  CHSC102419  Lepidium campestre Lowell Ahart 2009-7-9 16017 Butte On dry sandy soil, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC89876  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC3239  Lepidium nitidum Virginia Hagaman 1966-3-12 57 Butte 1/2 mile northeast of Hooker Oak along stream bank, in Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC89881  Lepidium nitidum Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC33262  Lepidium pinnatifidum R. E. Preston 1981-6-19 95 Butte At roadside, 300 m w of Headquarters, Gray Lodge State Wildlife Area, ca. 13.5 km ssw of Gridley. 20 Comment
  CHSC33170  Lepidium strictum R. E. Preston 1981-5-3 64 Butte At curbside, in front of St. John the Baptist Church, Chestnut St. between 4th and 5th Sts., Chico. Comment
  JEPS115285  Lepidium strictum Lowell Ahart 2009-4-3 15525 Butte On margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UCD63613  Leptochloa dubia L. Ahart 2000-11-4 8714 Butte on the west side of Highway 70, about 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  UCD72995  Leptosiphon bicolor Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC29964  Leptosiphon bolanderi R. A. Schlising 1980-6-1 3609 Butte S of Paradise at Kunkle Reservoir, off Pentz-Magalia Hwy. 440 Comment
  POM219377  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte Jonesville, Woods above Butte creek meadows. 1829 Comment
  CHSC38597  Leptosiphon filipes Vernon Oswald 1983-5-7 442 Butte Upper Bidwell Park, Chico, on the north rim at the head of the east tributary of Sycamore Creek. 365 Comment
  CHSC93863  Leptosiphon filipes Lowell Ahart 2006-6-9 12660 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 354 Comment
  UCSB63628  Leptosiphon filipes Heinitz, Eric 1979-4-25 Butte North side of Skyway; T22N, R2E, sec. 36 (Hamlin Canyon 7.5 Quad); 30 m. north of roadside 243 Comment
  SEINET10474776  Lessingia nana Mary Susan Taylor 1980-7-6 Taylor 3059 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CHSC25345  Lessingia nemaclada M. P. Hayes 1977-8-12 27 Butte At Pulga, Feather River Canyon. 100 m from the intersection of Pulga Road and Highway 70, along Pulga Road. 426 Comment
  JEPS120560  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  RSA32020  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte Upper end of the Honey Run grade at Paradise 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
  CHSC65643  Limnanthes alba subsp. alba Mark S. Cederborg 1995-4-12 19 Butte Fernandez Land Grant. In drainage on se side of Wilbur Rd ca. 1.9 mi s of Hwy 162, ca. 6 mi sw of Oroville. 44 Comment
  CHSC55716  Limnanthes douglasii subsp. nivea Jennie J. DuBose 1991-4-2 3 Butte Ca. 45 m w of Table Mountain Cherokee Road. 3.75 km n of Oroville on n Table Mountain. 366 Comment
  CHSC1011  Limnanthes douglasii subsp. rosea P. Delaplane 1965-3-23 42 Butte H. Wurlitzer Ranch; ca. 13 mi NW of Chico. W. of Hwy 99E N. 60 Comment
  HSC32645  Limnanthes douglasii subsp. rosea Gary S. Lester 1974-4-20 95 Butte Skyway Blvd., 1 mi. E of US 99 61 Comment
  RSA435676  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Road near Table Mountain. Comment
  CHSC102546  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-31 Butte Northern Sacramento Valley. Near the base of the foothills in-between where Wookey road and Munjar Road terminate. 106 Comment
  CHSC67554  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3240 Butte W of dirt road, E of Butte Creek Diversion Channel. 79 Comment
  UCD116433  Limnanthes floccosa subsp. floccosa Jeff Dole 1986-4-27 s.n. Butte 1 mile north of Cayton Creek. Comment
  RSA754581  Linanthus filipes L. Ahart 2009-4-22 15586 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
  CHSC112333  Lindernia dubia var. anagallidea Lowell Ahart 2013-7-9 18832 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (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
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  SEINET12186045  Linum micranthum L. Ahart, Ahart, P. 1983-1 4094 Butte along Bloomer Hill Rd., 1.3 mi W of Oroville-Quincy Hwy, 15 mi NE of Oroville 450 Comment
  RSA0106687  Lipocarpha micrantha Lowell Ahart 2013-11-13 19239 Butte Below high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC4343  Lithocarpus densiflorus Carl Pejsa 1966-5-18 90 Butte Bidwell Park Forestry Station. Comment
  CHSC3976  Lithophragma E. P. Parreno 1967-4-10 Butte Not so common locally. 300 yards from covered bridge. Comment
  CAS-BOT-BC430886  Lithophragma bolanderi M. S. Taylor 16/IV/1980 2496 Butte Lake Oroville State Recreation Area, ca. 1/4 mi S of Parish Camp, ca. 1 mi N of Hwy 70 bridge or Feather River, ca. 5 mi S of Paradise. Cherokee Quad.; The Pacific Coast. Comment
  CHSC1655  Lithophragma parviflorum var. trifoliatum B. Hetherington 1935-3-27 Butte Foothills. Comment
  CHSC33697  Lithophragma parviflorum var. trifoliatum L. Ahart 1981-4-9 2754 Butte Peter Ahart Ranch. Under oak trees along banks of North Honcut Creek, ca. 1 mi n and 3 mi e of Honcut. 213 Comment
  CHSC65436  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 170 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  CHSC51919  Lithophragma tenellum L. P. Janeway; R. A. Schlising 1988-7-1 2910 Butte On the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  CHSC4015  Lithospermum californicum D. B. Joley 1967-4-10 29 Butte On bank, ca. 5 feet s of Centerville Rd. and ca. 11.2 miles n of Honey Run and Centerville Rds., Centerville. 457 Comment
  CAS-BOT-BC317345  Lithospermum californicum Lowell Ahart 1982-5-8 4090 Butte Along Bloomer Hill Road, about 1.25 miles W of the Oroville Quincy Highway, about 15 miles NE of Oroville. Section 31. 450 Comment
  JEPS105681  Logfia filaginoides L. P. Janeway and John Hunt, Adam Henderson 2003-5-13 7784 Butte Northern High Sierra Nevada; E side of Middle Fork Feather River arm of Lake Oroville, 1.0 km SW of mouth of Frey Creek 299 Comment
  CHSC29828  Logfia gallica M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2767 Butte W side of Kunkle Reservoir, ca. 100 ft e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CAS-BOT-BC269078  Lolium perenne John Thomas Howell 1951-6-26 27518 Butte Big Bend Mt. 609 Comment
  RSA718953  Lolium perenne subsp. multiflorum L. Ahart 2006-9-28 13382 Butte East side of the North Fork of the Feather river, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  UCR237713  Lolium perenne subsp. multiflorum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18747 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CHSC42610  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  HSC72763  Lomatium marginatum var. marginatum M. S. Taylor 1981-4-8 3490 Butte Plumas NF; Between Ponderosa Way & Concow Road, ~.10 mi. S of their junction, 2 mi. N of Lake Concow. 976 Comment
  CHSC48016  Lonicera conjugialis Vernon Oswald; Lowell Ahart 1987-7-1 3058 Butte Scotts John Creek 1.3 mi N of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ENE of Jonesville. 1813 Comment
  CHSC55489  Lonicera interrupta L. P. Janeway 1991-6-8 3998 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. At edge of little-used dirt road. 411 Comment
  CHSC115434  Lonicera japonica Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  UC864769  Lotus argophyllus var. fremontii Lewis S. Rose 1940-5-30 40424 Butte 25 mi ne Oroville; Feather River Canyon 609 Comment
  UC81117  Lotus crassifolius Mrs. R. M. Austin Jun 1899 390 Butte n of Chico (Humboldt road) Comment
  JEPS43471  Lotus humistratus Joan O. Danielson 1966-4-6 23 Butte just s Oregon Gulch Road (Cherokee Road) Comment
  SEINET10451976  Lotus humistratus Lowell Ahart 1985-5-15 Ahart 4972 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SEINET3523638 Image available Lotus incanus A. A. Heller 1939-4-26 15387 Butte Along road leading down to the Feather River from Stirling Comment
  CDA34221  Lotus micranthus L. Ahart 2010-6-9 16778 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  UC566229  Lotus purshianus var. purshianus C. G. Albertus 1933-7-14 44 Butte 0.5 mi w Fourteen Mile House; Chico Quad. 335 Comment
  SEINET3729652  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  JEPS105661  Lotus strigosus L. P. Janeway, John Hunt, Adam Henderson 2003-5-13 7785 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek 290 Comment
  SEINET12161432  Lotus subpinnatus D. G. Bendix 1978-1 12 Butte 50 m s of Lookout Point, 7kmW of Paradise 300 Comment
  SEINET7042709  Lotus wrangelianus A. G. Vestal 1963-5-9 s.n. Butte At lower slope of lava mesa. Road to Chico. Ca. 11 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 604825mE, 4383603mN. Comment
  CHSC102987  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC37105  Ludwigia palustris L. Ahart 1982-10-15 3893 Butte On a sandbar on bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC26808  Ludwigia peploides M. S. Taylor 1978-5-7 1608 Butte In irrigation ditch in Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  POM24313  Lupinus affinis C. C. Bruce 1897-04 2029 Butte Chico Comment
  UC865406  Lupinus albicaulis A. A. Heller 1937-5-31 15339 Butte on Highway #24 near the junction of the Yankee Hill Road about 21 mi from Oroville Comment
  CHSC34686  Lupinus albifrons M. S. Taylor 1981-5-5 3605 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC90029  Lupinus albifrons Keith Bunney 1991-4-21 2 Butte West side of Hwy 162, 2.9 mi ne of Oroville. 121 Comment
  CHSC3985  Lupinus albifrons var. collinus D. B. Joley 1967-3-16 16 Butte Few plants on a slope of a hill, ca. 10 feet n of Nelson Bar Rd. and 1/2 mile from turn off on to Nelson Bar Rd., Pentz. 106 Comment
  CAS-BOT-BC196247  Lupinus albifrons var. eminens H. E. Brown 1897-4-15 s.n. Butte Near Clear Creek Comment
  POM23537  Lupinus albifrons var. eminens C. C. Bruce 1898-05 2028 Butte Doe mill Comment
  CHSC28461  Lupinus bicolor R. A. Schlising 1979-4-8 3353 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC90494  Lupinus bicolor Stacy Scott 1981-4-24 6 Butte About 1.3 km north of Eaton Road, 100 m east of Cohasset Hwy along Sheep (Grizzly) Hollow; about 7 km north-northeast of Chico. 190 Comment
  UCD107231  Lupinus bicolor A. A. Heller 1915-4-12 11817 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  CHSC48525  Lupinus bicolor var. pipersmithii Vernon Oswald 1985-3-17 1686 Butte Peter Ahart Ranch ca. 2 mi ne of Honcut. 32 Comment
  CHSC32608  Lupinus bicolor var. tridentatus J. D. Jokerst 1981-3-28 1269 Butte Butte College Campus ca 500 m due N of the jct of Pentz and Clark roads. 97 Comment
  HSC38055  Lupinus densiflorus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2463 Butte Beside SR 191 just N of its junction with SR 70 Comment
  SEINET10871252  Lupinus grayi Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4721 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
  CHSC34688  Lupinus nanus M. S. Taylor 1981-5-1 3588 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  CHSC90378  Lupinus nanus E. Ray Latham 1988-4-21 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  UCD109258  Lupinus nanus Michael A. Vincent; Ethan H. Freid 1998-4-6 8117 Butte Table Mountain. Comment
  CHSC38510  Lupinus nanus var. latifolius Vernon Oswald 1983-4-9 308 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine n of the rifle range. 188 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
  JEPS115377  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
  UCD109577  Lupinus stiversii Joseph M. DiTomaso 1976-5-23 467 Butte Lake Oroville, peninsula on south side. 274 Comment
  SEINET10490272  Lupinus superbus var. elongatus A. Arthur Heller 1938-7-20 Heller UMO 71624 Butte Moist grassy places near clumps of willows, upper end of snag lake, 7 mi e of Chaparral in the arid transition life zone. 1524 Comment
  SEINET10452164  Lupinus vallicola Mary Susan Taylor 1976-3-30 Taylor 1042 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  SEINET12161333  Lupinus vallicola Unknown 1978-1 38 Butte 25ft from W side of Cherokee Rd ca 6miS of hwy 70, ca 6miN of Oroville 518 Comment
  SEINET10491004  Lupinus vallicola subsp. vallicola Taylor 1981-5-5 Taylor 3601 Butte Forbestown quad. E side of limpkin-laporte road, 1 mi n of enterprise bridge Over south fork feather river, ca 10 air mi e of oroville. Granitic soils. Associates: cheilanthes californica, diplacus grandiflorus, trifolium Microcephalum. 457 Comment
  RSA0116259  Luzula comosa var. comosa Lowell A. Ahart 2014-7-10 19634 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  RSA774132  Luzula comosa var. comosa L. Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CAS-BOT-BC436643  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC52716  Luzula comosa var. laxa L. P. Janeway 1987-6-5 2140 Butte Along Ram Creek ca 0.2 mi up from mouth at French Creek; French Creek road 6.2 mi from OroQuincy Hwy and Stanwood Saddle. 609 Comment
  CHSC32366  Luzula macrantha J. D. Jokerst 1980-4-18 607 Butte 1.0 mi S of the town of Nimshew where to road makes a sharp turn to the W. 701 Comment
  CHSC60591  Luzula macrantha Vernon H. Oswald; Lowell Ahart 1993-4-21 5289 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
  CHSC87441  Luzula macrantha R. D. Fischer 2004-4-3 105 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail, 0.25 miles south of Pine Trail junction. 396 Comment
  JEPS110179  Luzula macrantha Lowell Ahart 2006-4-28 12547 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 318 Comment
  RSA0060489  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir. 1020 Comment
  JEPS110477  Lycopus americanus Lowell Ahart 2006-9-13 13320 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  SEINET10452837  Lythrum californicum Mary Susan Taylor 1978-9-8 Taylor 1904 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC1028  Lythrum hyssopifolia D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  JEPS127071  Lythrum hyssopifolia Lowell Ahart 2016-5-30 20897 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  JEPS120768  Lythrum portula Lowell Ahart 2013-9-20 19060 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CDA18880  Lythrum salicaria Riley, Villegas 2000-5-24 PDR 1170754 Butte Vicinity of Wyman Ravine, on the westside and eastside of Lincoln Blvd. 0 Comment
  CHSC12612  Maclura pomifera S. Posner 1972-9-23 Butte Corner of West 5th St. and Oak, Chico. Comment
  SEINET10474299  Madia elegans Mary Susan Taylor 1977-11-12 Taylor 1541 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC84146  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the east side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  RSA755649  Madia elegans subsp. vernalis L. Ahart 2009-5-23 15726 Butte About 60 yards northwest of Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile west of Highway 32, about 10 miles northeast of Chico. 268 Comment
  CAS-BOT-BC344313  Madia exigua Lowell Ahart 1982-6-15 3561 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  POM362160  Madia exigua L. S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CAS-BOT-BC342967  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CAS-BOT-BC345241  Madia subspicata A. A. Heller 1915-5-17 11878 Butte Along Chico Creek 5 miles east of Chico Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CDA13327  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13173 Butte Sierra Nevada; S end of 22N89. Approx. 0.5 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC60959  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC37279  Malva nicaeensis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4360 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1 mi w of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC63257  Malva parviflora L. Ahart 1994-3-30 7277 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  CHSC84130  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the southwest corner of a prune orchard, on the north side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. 24 Comment
  CHSC45330  Malvella leprosa Vernon Oswald 1983-6-28 782 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  SEINET10448085  Marah fabacea Mary Susan Taylor Taylor 986 Butte Bidwell Park, Chico. Comment
  CHSC20126  Marah fabacea var. agrestis M. S. Taylor 1975-5-6 552 Butte On s side of Big Chico Creed, ca. 60 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC46486  Marah watsonii Lowell Ahart 1980-4-7 2077 Butte South of the bridge across Rocky Honcut Creek, along Swedes Flat Road, north of Bangor. 292 Comment
  CHSC42275  Marrubium vulgare L. P. Janeway; C. A. Janeway 1987-4-20 2009 Butte North side of hwy 32 at Ten Mile House Trail, ca 9 mi ne of the hwy 99 jct. 471 Comment
  CHSC8735  Marsilea vestita S. Chulasmai 1966-5-20 42 Butte Horseshoe (Mud) Lake. Comment
  CHSC33121  Matricaria discoidea M. S. Taylor 1981-5-15 3743 Butte Jct of 22N92 and 23N00.1, ca. 1.5 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 975 Comment
  CHSC10794  Meconella californica Lowell Ahart 1965-4-15 Butte Swede's Flat Road. 91 Comment
  CHSC28966  Meconella californica J. D. Jokerst 1980-11-23 446 Butte Edge of flat ridge top ca 1/4 mi NW of Neal Rd. 198 Comment
  CAS-BOT-BC422643  Meconella californica Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham Comment
  SEINET12155158  Medicago arabica P. L. Ricker 1912-1 8952 Butte Chico Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  SEINET12155163  Medicago orbicularis P. L. Ricker 1912-1 3941 Butte Chico Comment
  CHSC101685  Medicago polymorpha Lowell Ahart 2009-5-8 15662 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CDA4226  Medicago scutellata P. B. Kennedy 1924-1 Butte Chico. 0 Comment
  CHSC69122  Melica aristata Lowell Ahart 1997-8-1 7804 Butte On the south side of County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  CAS-BOT-BC269373  Melica californica Lowell Ahart 1987-5-9 5581 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  UCD23593  Melica californica John Thomas Howell 1971-6-16 37540 Butte Magalia. 731 Comment
  CHSC36067  Melica geyeri J. D. Jokerst; R. A. Schlising 1982-6-4 1586 Butte N of Concow Basin. 853 Comment
  CDA13298  Melica harfordii G. F. Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Plumas National Forest; Common colonies on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  CHSC93792  Melica harfordii Lowell Ahart 2006-5-19 12638 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  RSA700220  Melica harfordii L. Ahart 2004-6-22 11112 Butte on the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch;, about 5 miles (air) west of Stirling City. 692 Comment
  CAS-BOT-BC281020  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Skirting the N flank of Humboldt Peak on the Butte - Plumas county border, S of the Pacific Crest Trail 2072 Comment
  POM114759  Melica torreyana C. C. Bruce 1898-05 2378 Butte [No locality information provided] Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  RSA715568  Melilotus indicus L. Ahart 2005-5-2 11772 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 26 Comment
  CDA42908  Melissa officinalis L. Ahart 2012-6-21 18219 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS103288  Melissa officinalis Lowell Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Falls. 741 Comment
  UC1609278  Mentha pulegium Lowell Ahart 1993-7-22 7068 Butte Peter Ahart Ranch, about 2.5 miles N and 1/20 mi E of Honcut, about 12 mi S of Oroville 36 Comment
  CHSC43296  Mentha spicata Lowell Ahart 1987-8-30 5868 Butte Along the north fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10498207  Mentha spicata Mary Susan Taylor 1975-10-31 Taylor 981 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CHSC26707  Mentzelia laevicaulis M. P. Hayes 1977-10-23 143 Butte In Lindo channel in large gravel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC42718  Micranthes aprica Lowell Ahart; Vern Oswald 1987-6-10 5747 Butte Around a small drying meadow, at Sunflower Flat, about 2 1/2 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  UCD102846  Micranthes nidifica L. Ahart 1974-3-8 308 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC25283  Micranthes oregana M. S. Taylor 1977-7-15 1406 Butte In ne corner of Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  SEINET10871998  Micropus californicus Mary Susan Taylor 1974-4-20 Taylor 185 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  CHSC33366  Micropus californicus var. californicus Steven Azevedo 1980-4-16 18 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC394  Micropus californicus var. californicus M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC348461  Micropus californicus var. californicus Mrs. C. C. Bruce 1897-1-1 s.n. Butte Unspecified Comment
  POM33622B  Microseris C. C. Bruce 1897-06 1951 Butte Little Chico Comment
  CHSC29734  Microseris acuminata J. D. Jokerst 1980-4-17 597 Butte Top of North Table Mt, around the edges of vernal pools. 441 Comment
  CHSC83924  Microseris acuminata Lowell Ahart 2003-4-10 10058 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  JEPS35678  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte a few mi ne Chico (along the Red Bluff - Chico Road) Comment
  CHSC19946  Microsteris gracilis M. S. Taylor 1975-3-10 409 Butte On bluffs overlooking Butte Creek and Covered Bridge, ca. 8 mi e of Chico. Comment
  SEINET9800583 Image available Mimetanthe pilosa Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  RSA535780  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge. Griffith residence, 4.4 mi NE of Keefer Road along cohasset Hsy, then 0.4-0.6 mi s along private dirt road; 396 Comment
  UCD22551  Mimulus aurantiacus James I. Mallory 1970-5-26 374 Butte T22N R3E Sect. 3 426 Comment
  JEPS115847  Mimulus aurantiacus var. grandiflorus Lowell Ahart 2009-4-22 15602 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CDA13864  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-7 13722 Butte Sierra Nevada; SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CDA13896  Mimulus glaucescens G. F. Hrusa, T. D. Wilfred 1997-5-8 13753 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS5550  Mimulus glaucescens R. F. Hoover 1936-5-21 1158 Butte 3 mi n Chico Comment
  RSA295252  Mimulus glaucescens J. Doty 1969-3-31 615 Butte East side fo Cohasset Road, 8 miles north of Chico Comment
  UCD122718  Mimulus glaucescens F. J. Fuller 1982-4-18 20 Butte ca. 0.5 mi sw of Hwy 32 on Crown Pt Rd, 11 mi nw of Chico. 548 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  RSA715566  Mimulus guttatus L. Ahart 2005-5-2 11781 Butte 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. 26 Comment
  RSA718738  Mimulus guttatus L. Ahart 2006-7-25 13063 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  UC726286  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte Table Mountain Comment
  SEINET10962493  Mimulus kelloggii Mary Susan Taylor 1978-5-6 Taylor 1574 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA0116252  Mimulus moschatus Lowell A. Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  UC1468291  Mimulus tricolor L. Ahart 1983-6-6 4029 Butte 2.5 mi ne Honcut; Peter Ahart Ranch 50 Comment
  RSA20869  Minuartia californica C. B. Wolf 1937-3-29 8330 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  SEINET10537563  Minuartia californica Mary Susan Taylor 1974-3-3 Taylor 69 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  SEINET10932247  Minuartia californica Mary Susan Taylor 1975-4-26 Taylor 522 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC103671  Minuartia douglasii Lowell Ahart 2010-4-30 16605 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC62724  Minuartia douglasii L. P. Janeway 1993-5-2 4335 Butte Serpentine ridge, south of Serpentine Point and above Hwy. 70. 518 Comment
  POM219016  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC99311  Moenchia erecta subsp. erecta Lowell Ahart 2008-5-30 14800 Butte Mowed parking area at the cemetery, about 300 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 331 Comment
  CHSC113121  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2 1/2 miles (air) northeast of Hurleton. 267 Comment
  CHSC116321  Mollugo verticillata Lowell Ahart 2015-10-26 20593 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC38255  Mollugo verticillata Vernon Oswald 1983-6-18 707 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC60102  Monardella breweri subsp. lanceolata B. Castro; J. Jurewicz 1991-9-16 447 Butte Ca 23 air mi NE of Oroville, ca 4 mi NE of Mtn. House along Oro-Quincy Hwy, on E side of USFS Rd 22N80 ca 0.2 mi NE of its jcn with the Oro-Quincy Hwy. 1203 Comment
  CHSC26689  Monardella odoratissima subsp. pallida M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1489 Butte At Humboldt Summit, at Butte-Tehama county line. In forest on Butte side. 2133 Comment
  JEPS105012  Monardella odoratissima subsp. pallida Dean W. Taylor 1995-8-6 15386 Butte Rocky Ridge, north end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest; Northern Sierra Nevada 975 Comment
  CHSC43035  Monardella sheltonii L. P. Janeway 1987-6-8 2179 Butte 4.5 mi south of Big Bar Mtn (via rd). 899 Comment
  CHSC44928  Monardella sheltonii Lowell Ahart 1988-7-28 6137 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  RSA125169  Monolopia major Hartweg 1847-4-13 1789 Butte Sacramento [probably Sacramento Valley, ca. 55 miles north of Yuba City, near Oroville] Comment
  CHSC45392  Montia chamissoi Vernon Oswald 1983-8-4 957 Butte Near Humboldt Rd. 3.5 mi n-e of Butte Meadows. Growing in a sandy, wet spot along Butte Creek. 1414 Comment
  POM280231  Montia clara Lyman Benson 1935-3-27 6370 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC31854  Montia fontana subsp. amporitana L. Ahart 1974-2-12 300 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC54372  Montia fontana subsp. amporitana M. Bailey 1991-3-8 548 Butte Edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC61328  Montia fontana subsp. amporitana Lowell Ahart 1993-7-31 7142 Butte On wet moss and in shallow water of a small seep (stream), on the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain. 1493 Comment
  CHSC87231  Montia fontana subsp. amporitana Lowell Ahart 2004-3-1 10700 Butte In a small depression, near low rocks, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 62 Comment
  CHSC50110  Montia linearis Vernon H. Oswald 1990-5-9 4196 Butte Colby Creek Meadow on the north side of Humboldt Rd, ca. 1 mile west of Jonesville. Occasional on moist, sloping meadow on the west side of Colby Creek, slightly north of the mouth of Willow Creek. 1475 Comment
  CHSC109094  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  UC1564753  Muhlenbergia andina V. Oswald and L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd 1.4 mi n junction with Coon Hollow Rd (ca 1.2 air mi n of Philbrook Reservoir, on edge of shallow lake n of and just visible from road) 1752 Comment
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Jun 20 2012
  CHSC112710  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  CHSC78361  Muhlenbergia filiformis Lowell Ahart 2000-6-27 8520 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  LA9645  Muhlenbergia filiformis E. B. Copeland; 1929-7-16 339 Butte Jonesville 1550.0 Comment
  POM196131  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  RSA769226  Muhlenbergia filiformis L. Ahart 2009-11-19 16546 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 270 Comment
  UC398891  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte above Jonesville (bank of pond) 1750 Comment
  CHSC78126  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  HSC13474  Myriophyllum spicatum T. F. Newman 1964-4-17 643 Butte SW of Oroville Comment
  CHSC42813  Narthecium californicum L. P. Janeway 1987-6-27 2363 Butte On east slope of Bald Mtn, along the Concow Rd. 1706 Comment
  CHSC39504  Nassella pulchra Lowell Ahart 1983-6-15 4055 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CHSC34986  Navarretia divaricata R. A. Schlising; R. Banchero 1981-5-20 4059 Butte E part of county, Lumpkin Ridge. Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC102842  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 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
  CHSC109216  Navarretia filicaulis B. Castro; L. P. Janeway 2004-7-13 1469 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. 829 Comment
  JEPS107910  Navarretia filicaulis Lowell Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  CHSC26825  Navarretia heterandra M. S. Taylor 1978-5-7 1590 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
  JEPS104076  Navarretia heterandra Lowell Ahart 2003-6-18 10290 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  SEINET10837199  Navarretia intertexta Mary Susan Taylor 1975-6-25 Taylor 799 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC94249  Navarretia intertexta subsp. intertexta Lowell Ahart 2006-7-16 13003 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  CHSC20897  Navarretia leptalea M. S. Taylor 1975-8-31 883 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC71122  Navarretia leucocephala Jan Monelo 1989-4-25 10 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico; rim of drainage, ca 20 yds w of Hwy 99. 106 Comment
  UCD48514  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte On volcanic rubble, near junction of Chico Paradise Road, 3 miles south of Chico, Butte County, California. Comment
  UCSB34436  Navarretia leucocephala Haller, John; Vivrette, Nancy 1980-4-28 Butte Cherokee Road Comment
  CHSC75294  Navarretia leucocephala subsp. leucocephala Lowell Ahart 1999-5-21 8072 Butte Along a drain ditch in a pasture field, 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CHSC52109  Navarretia nigelliformis R. A. Schlising 1979-6-3 3431 Butte Richvale vernal pools, 1/4 mi s jct Hwy 99 and 162 to Oroville, across from Thermalito Afterbay. Comment
  UC1330011  Navarretia nigelliformis subsp. radians Beecher Crampton 1966-6-27 7768 Butte ca 13 mi nw centralChico (U.S. Hwy 99 E; Elwin Roney ranch) Comment
  CHSC12747  Navarretia pubescens L. V. Ritter 1969-5-5 262 Butte Ca 200 yds. w of Horseshoe Lake, Bidwell Park, 50 yds. n of the Park Rd. Comment
  POM65213  Navarretia squarrosa A. A. Heller, H. E. Brown 1902-5-7 5477 Butte Berry Canyon (Near Clear Creek). 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
  CHSC90245  Navarretia tagetina James Wilson 1989-4-25 21 Butte 2 ft n of Broyles Road, 3 mi from junction with Highway 99, 28 mi sse of Red Bluff, and 11 mi nw of Chico. 60 Comment
  RSA715673  Navarretia tagetina L. Ahart 2005-5-27 11813 Butte About 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  UC856894  Navarretia tagetina A. A. Heller 1914-5-11 11383 Butte 8 mi n Oroville Comment
  UCD80639  Navarretia tagetina CNPS SN Foothill Team 2005-5-3 SNFN 0198 e Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  SEINET10935977  Navarretia viscidula subsp. purpurea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4133 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  RSA0000011  Nemophila fallax C. C. Bruce 1897-03 2037 Butte [No location information on label.] Comment
  CHSC40031  Nemophila heterophylla L. Constance; J. L. Morrison 1938-4-30 2177 Butte Moist NE. canyon slope, between Big and Little Chico creeks, 8 miles N. of Chico, Sierra Nevada foothills. 609 Comment
  RSA712988  Nemophila heterophylla L. Ahart 2006-4-28 12544 Butte On the south side of a dirt road, on the west side of a small stream. A part of the south drainage of Beatson Hollow, about 0.5 miles northwest of the Iron Gate along Cherokee Road, North Table Mountain. About 7 air miles north of Oroville. 302 Comment
  CHSC24718  Nemophila pedunculata C. E. Stopher 1976-4-3 16 Butte 9.7 km se of Chico via Honey Run road. 100 m sw of covered bridge on s side of canyon. 122 Comment
  CHSC28653  Nemophila pedunculata M. S. Taylor 1979-3-31 1967 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi n of Concow Rd and Lake Concow. 670 Comment
  SBBG64789  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Crk Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  CHSC116131  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte On the bottom and on the west side of Dark Canyon, west of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 224 Comment
  CAS-BOT-BC231530  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  POM253051  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte Near the Chico Airport Comment
  SEINET12342943  Odontostomum hartwegii Unknown 1936-1 13408 Butte along Mud Creek near Chico Comment
  CAS-BOT-BC171464  Oenothera campestris Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UC600432  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, W of Willow Creek. Comment
  CDA36804  Orobanche fasciculata D. B. Joley 1972-5-9 Butte Hwy. 32, approx. 7 miles north of Chico. 0 Comment
  SEINET10500392  Orobanche fasciculata var. franciscana Mary Susan Taylor 1980-4-19 Taylor 2539 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  JEPS95517  Orobanche uniflora Lowell Ahart 1994-4-22 7286 Butte 3 1/2 mi SW of Forbestown (S of int of Black Bart Road and Forbestown Road) 609 Comment
  CHSC61645  Orthilia secunda Lowell Ahart 1993-9-13 7236 Butte Dry wash located near Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC474273  Orthilia secunda H. F. Copeland 1920-7-29 454 Butte Jonesville Comment
  RSA34067  Orthocarpus campestris A. A. Heller 1939-5-13 15078 Butte On US Highway 99E near the 'Y' east of Richvale. Topotype. Comment
  RSA32035  Orthocarpus lacerus A. A. Heller 1941-5-9 16107 Butte On the Clark Road to Paradise a half mile above the site of the old Clear Creek Post Office. Comment
  UC1562354  Osmorhiza brachypoda Vernon Oswald 1990-5-28 4258 Butte Feather Falls Trail ca 0.4 mi n trailhead (ca 2 mi n of town of Feather Falls) 701 Comment
  CHSC47852  Oxalis bowiei Vernon H. Oswald 1989-11-10 4027 Butte Table Mtn Blvd, 0.7 mi nw of Garden Drive, Thermalito. Along the edge of road at the bottom of railroad right of way. 91 Comment
  CHSC27254  Oxalis corniculata P. Moyer 1972-3-4 100 Butte CSUC campus. On lawn at 1st and Hazel. 60 Comment
  CHSC43298  Oxalis laxa Lowell Ahart 1979-4-6 1822 Butte On the west side of North Honcut Creek, about 3/4 mile north-east of the bridge across North Honcut Creek and Avacado Avenue, about 3 miles north-west of Bangor. 91 Comment
  JEPS24983  Packera subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville 1550 Comment
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  CHSC42925  Panicum capillare Lowell Ahart 1987-7-3 5776 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC819486  Panicum capillare A. A. Heller 1916-9-30 12665 Butte 8 mi n Oroville; n of Oroville Comment
  UCD89584  Panicum dichotomiflorum Beecher Crampton 1963-9-9 6885 Butte Honcut. Comment
  CHSC43275  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1987-8-30 5869 Butte Road gutter, along Highway 70 about 1/8 mile west of Big Bend Road, about 1 1/2 miles south-west of Jarbo Gap. 655 Comment
  CHSC51041  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-8-15 6582 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  SEINET10507765  Panicum pacificum Mary Susan Taylor 1978-7-21 Taylor 1839 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CHSC112455  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast from Honcut. 54 Comment
  UC420405  Parnassia californica unknown July 1896 Butte Colby Comment
  CHSC6082  Paspalum dilatatum J. Wheeler 1968-5-17 204 Butte S side of Chico Junior High School, near curb, Chico. 59 Comment
  CAS-BOT-BC202815  Paxistima myrsinites M. S. Taylor; K. Tharp 1983-3-11 5224 Butte Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville 975 Comment
  CHSC39613  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown. 450 Comment
  CDA38827  Pectocarya pusilla L. Ahart 2012-4-3 17936 Butte On the east side of Guardian Trial, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UCD80146  Pectocarya pusilla CNPS SN Foothill Team 2005-3-22 SNFN 0063 a Butte CDPR Oroville State Recreation Area, just south of a state park utility road out to water tanks. This road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  CHSC51927  Pedicularis attollens L. P. Janeway 1988-7-29 3123 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  SFV71  Pellaea andromedifolia M. L. Vincent 1961-3-26 8 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  CHSC46280  Pellaea brachyptera Vernon Oswald 1989-5-28 3786 Butte Logging road paralleling the w side of Butte Creek, 3.2 mi s of Humboldt Rd (near Butte Meadows). 1292 Comment
  CHSC27944  Pellaea mucronata M. S. Taylor 1979-3-20 1954 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70. Ca. 10 mi n of Oroville. 304 Comment
  CHSC29215  Pellaea mucronata Carl E. Yingst 1980-4-23 18 Butte Ca. 20 km ne of Chico, 1.8 km sw of Highway 32. 454 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
  SEINET267156 Image available Pellaea mucronata subsp. mucronata T. A. Ranker, P. G. Trapp 1994-6-17 1623 Butte Pence Road south of Paradise. 395 Comment
  CHSC44074  Pellaea mucronata var. californica L. P. Janeway 1987-6-20 2268 Butte Top of Lumpkin Ridge 0.6 mi south of the Feather Falls-Lumpkin Ridge Rd. 1249 Comment
  CDA36308  Penstemon azureus J. R. Keck Jr. 1978-5-23 PDR# 330034 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  NY571128  Penstemon azureus var. angustissimus D. D. Keck 1928-6-16 451 Butte 1.5 miles south of Berry Creek Inn 609.6 Comment
  UC600438  Penstemon deustus var. deustus H. F. Copeland 1931-6-11 Butte Butte Creek Canyon betw Scotchjohn and Willow Crks (Jonesville); Butte Creek Canyon btw Scotchjohn and Willow Crks, Jonesvill Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC44715  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 288 Butte Along Quartz Creek Rd 0.5 mi S of the Dark Canyon Bridge, 0.6 mi N of the Fall River Bridge. 1036 Comment
  UC1012164  Penstemon laetus var. leptosepalus F. W. Pennell and A. A. Heller 1940-6-5 25682 Butte Route 24 along Feather River (above Oroville, in Lassen Nat. Forest); Lassen Nat. Forest, along Feather River 640 Comment
  CHSC93073  Penstemon neotericus L. P. Janeway 1994-7-5 4682 Butte Northern High Sierra Nevada. Granite Ridge; along Concow Road 0.1-0.2 mi north of junction. East side of ridge top above Camp Creek. 1310 Comment
  CAS-BOT-BC239452  Penstemon rydbergii var. oreocharis R. Banchero 1980-8-1 329 Butte 0.4 mi w of the e end of Philbrook Res., 4.3 mi se of the jct of Skyway and Philbrook rd. 1706 Comment
  CHSC3295  Pentagramma triangularis M. L. Hillier 1966-3-7 Butte 100 to 300 yds s of covered bridge over Butte Creek. Comment
  CHSC90138  Pentagramma triangularis subsp. triangularis Jack Judkins 1983-4-16 9 Butte 6 mi east-southeast of Chico, 100 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  CDA14080  Perideridia G. F. Hrusa, T. D. Wilfred 1997-7-3 13963 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Few individuals along wet creek margin with base in water. Shaded, rocky creekbed. Plant just coming into bloom. Comment
  CAS-BOT-BC211262  Perideridia bacigalupii Lowell Ahart 1985-8-15 5163 Butte 50 yards south of the road to the Forbestown Res. about 2 1/2 miles north-east of Forbestown 883 Comment
  UC1390033  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5987 Butte 7 mi s Paradise Comment
  CHSC66659  Perideridia kelloggii Vernon H. Oswald; Lowell Ahart 1996-7-22 8089 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the SW corner of Tract 3.4, Sanctuary II, on the Llano Seco Ranch side of the refuge boundary. 32 Comment
  CHSC40215  Perideridia lemmonii Lowell Ahart 1985-6-30 5083 Butte Near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC94399  Perideridia lemmonii Lowell Ahart 2006-8-15 13176 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  UC1389952  Perideridia lemmonii T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-17 5988 Butte 1 mi ne Paradise (by reservoir); Paradise reservoir Comment
  CHSC26742  Perideridia parishii subsp. latifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1467 Butte Along Julies Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  POM161669  Perideridia parishii subsp. latifolia E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  CAS-BOT-BC413700  Persicaria hydropiper John Thomas Howell 1961-9-22 36770 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CAS-BOT-BC418859  Persicaria hydropiperoides Lowell Ahart 1982-10-6 3847 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC66167  Persicaria lapathifolia Vernon H. Oswald; Lowell Ahart 1996-5-27 7665 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile lane and the Sacramento River. Locally common on the drying bed of seasonal marsh on the S side of Tract 1.1, Sanctuary II. 33 Comment
  CHSC42489  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS119936  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS120020  Persicaria punctata Lowell 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
  CHSC10585  Phacelia cicutaria Lowell Ahart 1968-4-27 Butte Near Honcut. 45 Comment
  JEPS117223  Phacelia cicutaria var. cicutaria Lowell Ahart 2010-5-16 16698 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville Comment
  CHSC4595  Phacelia egena C. Glascock 1965-4-10 305 Butte 2.5 mi. s on Clark Rd. from its intersection with Pearson Rd., Paradise. Comment
  CDA13303  Phacelia heterophylla subsp. virgata G. F. Hrusa, T. D. Wilfred 1996-7-9 13151 Butte Plumas National Forest; along USFS N60 near Marble Creek Bridge. E of Rogers Cow Camp. Comment
  UC1564802  Phacelia heterophylla subsp. virgata V. Oswald and L. Ahart 1989-7-12 3842 Butte logging road (T-line) 0.6 air mi nnw Bald Mtn Lookout (ne of Stirling City) 1560 Comment
  CHSC39105  Phacelia mutabilis R. A. Schlising 1982-8-1 4368 Butte N part of county, E of Inskip and E of Jones Meadow. 1853 Comment
  POM193436  Phacelia procera E. B. Copeland 1930-7-11 447 Butte Near Butte Creek, Jonesville. 1550 Comment
  CHSC40778  Phacelia racemosa Lowell Ahart 1985-7-16 5146 Butte On damp fine soil along Willow Creek, near the Section corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC154305  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  POM73395  Phacelia tanacetifolia C. C. Bruce 1898-05 2389 Butte Big Chico. Comment
  CAS-BOT-BC265847  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  JEPS94650  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte about 7 air mi n Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CHSC31634  Phalaris minor L. Ahart 1974-6-6 477 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CDA34212  Phalaris paradoxa L. Ahart 2010-6-12 16808 Butte At the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, and about 9 miles (air) northeast of Chico. Comment
  CHSC2173  Phalaris paradoxa D. Bower 1953-8-27 Butte 1A Llano Seco. 30 Comment
  CAS-BOT-BC77372  Philadelphus lewisii Lowell Ahart 1984-6-8 4659 Butte Along the edge of Ponderosa Way, about 1/8 mile west of the Ponderosa Dam, about 2 miles northwest of Forbestown 370 Comment
  CAS-BOT-BC77374  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  SEINET10970383  Philadelphus lewisii subsp. californicus Mary Susan Taylor 1979-5-4 Taylor 1990 A Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  CHSC45109  Phleum alpinum Lowell Ahart 1988-9-4 6185 Butte On the bottom of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CAS-BOT-BC250861  Phleum pratense M. S. Taylor 1982-6-24 4728 Butte SE of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  UC478477  Phlox gracilis E. B. Copeland 1931-6-29 680 Butte Butte Creek Jonesville 1500 Comment
  CHSC98335  Phlox speciosa L. P. Janeway; B. Castro 2007-5-6 8969 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley. 1.8 air km northeast of Sawmill Peak. Disturbed serpentine chaparral, rocky soil. 969 Comment
  CHSC115491  Phlox speciosa subsp. occidentalis L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  HSC66088  Phoradendron bolleanum M. S. Taylor, J. D. Jokerst 1980-2-23 2316 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  UC1194603  Phoradendron densum Del Wiens 1960-6-15 2727 Butte near Magalia (just n. of train depot) Comment
  CHSC108800  Photinia serratifolia Lowell Ahart 2012-4-9 17849 Butte In a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  UC1191813  Phyla lanceolata Herbert L. Mason and Verne Grant 1946-8-14 13033 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CHSC66085  Phyla nodiflora var. rosea Vernon H. Oswald 1996-5-22 7619 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  CHSC64136  Physalis acutifolia B. Castro 1987-10-6 235 Butte At CSUC University Farm, along dirt road between berry vines and almond orchard. 45 Comment
  CHSC113195  Physalis lancifolia Lowell Ahart 2013-11-29 19295 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  UC1143157  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  CAS-BOT-BC140563  Physocarpus capitatus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  JEPS115350  Phytolacca americana Lowell Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET4890912  Phytolacca americana R. R. Halse 2006-8-2 6977 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCD98412  Phytolacca americana var. americana G. 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
  CAS-BOT-BC76938  Pilularia americana Lowell Ahart 1980-4-19 2092 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET6166093  Pilularia americana L. Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC79016  Pinus ponderosa John Thomas Howell 1962-6-15 37431 Butte Magalia 731 Comment
  CHSC102851  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 259 Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  CHSC108774  Pistacia atlantica L. P. Janeway 2011-9-12 10724 Butte Sacramento Valley. North face of the levee on the south side of the Feather River about 250 m east of Centennial Park, Oroville. 45 Comment
  CHSC106230  Pistacia chinensis L. P. Janeway; B. Castro 2010-5-23 9977 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northwest side of Big Chico Creek, along Yahi Trail about 200 m southwest of the power lines; on terrace between uplands and the creek. 91 Comment
  CHSC6648  Pittosporum M. MacArthur 1968-6-16 345 Butte NW end of Aymer Jam Hamilton School, Chico State College campus. 60 Comment
  SEINET10529967  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-3-20 Taylor 1939 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC169563  Plagiobothrys M. S. Taylor 1974-3-3 68 Butte Burton's Mesa, ca 3 mi E of Chico on the Skyway to Paradise 60 Comment
  CAS-BOT-BC6468  Plagiobothrys austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC10672  Plagiobothrys bracteatus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS21223  Plagiobothrys fulvus A. A. Heller 1914-3-23 11223 Butte hills 8 mi n Oroville Comment
  SEINET7072731  Plagiobothrys fulvus A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 140. UTM Zone 10, 616438mE, 4383522mN. Coordinate datum: NAD 27.) Comment
  CHSC43392  Plagiobothrys glyptocarpus Lowell Ahart 1979-5-7 1856 Butte Near Kunkle Creek, about 2 1/2 miles south-east of Paradise. 472 Comment
  CHSC46778  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 4590 Butte Near Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC28992  Plagiobothrys greenei J. D. Jokerst 1980-3-27 522 Butte N of Chico Muni Airport, E of Cohasset Hwy. 97 Comment
  JEPS105995  Plagiobothrys greenei Lowell Ahart 2004-4-4 10713 Butte About 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  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
  CHSC87412  Plagiobothrys nothofulvus R. D. Fischer 2004-2-28 119 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). On slope overlooking canyon. 548 Comment
  CHSC35059  Plagiobothrys scriptus R. Schlising; J. Jokerst, R. Banchero 1981-3-22 4008 Butte S of Chico near Pentz/Durham Road intersection with Hwy 99; south of Pentz/Durham Road. 60 Comment
  CHSC115203  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-5-5 20137 Butte Located on the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Themalito Afterbay, about 1 mile southwest of Oroville Airport, about 6 miles (air) southwest of Oroville. Valley Grassland. 42 Comment
  JEPS117197  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 378 Comment
  JEPS123826  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-4-24 20063 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  RSA754389  Plagiobothrys tenellus L. Ahart 2009-4-22 15571 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC96378  Planodes virginica Lowell Ahart 2007-3-7 13586 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/10 miles east of Honcut, about 12 miles south of Oroville. 31 Comment
  CHSC106870  Plantago coronopus Lowell 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. 42 Comment
  JEPS117515  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  SEINET12318338  Plantago coronopus D. M. Burk 1978-1 117 Butte 50 ft S of intersection of Broyles Rd & Hwy 99, ca 11 mi N of Chico 59 Comment
  CHSC82236  Plantago elongata Lowell Ahart 2002-3-24 9428 Butte On the east side of Table Mountain Boulevard, about 100 yards south of the bridge across the drainage from Beatson Hollow, about 5 miles (air) northwest of Oroville. 76 Comment
  CHSC83950  Plantago elongata Lowell Ahart 2003-3-31 10027 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, about 300 yards west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 43 Comment
  UC1125624  Plantago erecta C. G. Albertus 1933-5-29 5 Butte 1.5 mi n Wick; Chico Quad. 60 Comment
  CHSC55392  Plantago hookeriana Dan Morgan 1991-4-21 17 Butte Indian Springs Road, 0.3 mi west of Neal Road, Paradise. 243 Comment
  CHSC99761  Plantago major Lowell Ahart 2008-7-23 15145 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
  RSA81735  Plantago truncata subsp. firma Roxana S. Ferris 1952-5-16 12481 Butte 3 miles south of Cherokee on road to Oroville 335 Comment
  UCD138966  Platanthera dilatata var. leucostachys Kenneth D. Stewart 1965-7-7 s.n. Butte around 25 miles northeast of Chico on State Highway 32. Comment
  CHSC43801  Platanthera sparsiflora Vernon Oswald 1987-6-23 3006 Butte Just w of the Skyway 1.4 mi (odometer) s of Inskip. 1426 Comment
  CHSC20549  Platanus racemosa M. S. Taylor 1975-7-4 829 Butte Along Big Chico Creek, Five Mile, Upper Bidwell Park, Chico. 76 Comment
  CHSC35652  Platystemon californicus R. E. Preston 1982-4-7 236 Butte Ca. 10 ft above high water mark, w branch Feather River arm of Lake Oroville, ca. 1 mi. n of Nelson Bar launch ramp, ca 4 mi sw of Paradise. 304 Comment
  CHSC76953  Platystemon californicus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  SFV10384  Platystemon californicus M. L. Vincent 1964-4-9 539 Butte 1.5 miles from Clark Road turnoff on Alt. 40 North Fork. Comment
  CHSC31899  Plectritis ciliosa L. Ahart 1974-4-11 377 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50063  Plectritis ciliosa Lowell Ahart 1990-4-8 6447 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC60694  Plectritis macrocera Vernon H. Oswald; James Snowden 1993-4-7 5252 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  CHSC23132  Poa annua M. S. Taylor 1975-4-6 431 Butte In lawn, ne corner of Arcadian and W. 4th Ave, Chico. 30 Comment
  CDA14181  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. rhizomatous perennial in a +- moist, low area near creek. Shaded. Comment
  CHSC59055  Poa compressa Lowell Ahart 1992-8-2 6897 Butte Along Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  UC1562320  Poa cusickii subsp. epilis Vernon Oswald and Lowell Ahart 1990-7-19 4371 Butte ca 3 mi e Philbrook Reservoir (ca 0.8 mi w of Plumas Co line, s side of Philbrook Creek) 1965 Comment
  CHSC88152  Poa pratensis subsp. pratensis Lowell Ahart 2004-7-23 11304 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  SEINET7852326  Poa secunda subsp. juncifolia J. Nachlinger 1984-4-8 911 Butte Table Mouintain, 4 miles north of Oroville 366 Comment
  CHSC101254  Poa secunda subsp. secunda L. P. Janeway; B. Castro 2009-4-11 9724 Butte Northern Sierra Nevada Foothills. At saddle of ridge between Oroville Dam boat ramp and Potter Ravine, 1.2 km north of the boat ramp. 340 Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  CHSC32606  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising 1981-3-23 1266 Butte Ca 110 m S of Neil Rd. Comment
  CHSC36541  Poa secunda subsp. secunda L. Ahart 1982-6-4 3552 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC38849  Poa secunda subsp. secunda Vernon Oswald 1983-3-13 150 Butte Upper Bidwell Park, Chico, 50 ft w of Parking Area M (between Diversion Dam and Salmon Hole). 140 Comment
  CHSC47629  Poa secunda subsp. secunda Lowell Ahart 1977-6-16 1425 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CHSC107922  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
  SEINET10508319  Poa tenerrima Mary Susan Taylor 1980-3-15 Taylor 2382 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 Comment
  CHSC14011  Pogogyne douglasii G. Notch 1974-4-23 179 Butte Ca. 4 mi w of Hwy 99 on Broyles Rd. ca 12 mi n of Chico. 76 Comment
  CHSC25040  Pogogyne zizyphoroides P. E. Reese 1972-4-29 10 Butte Found ca. 50 ft. from Hwy. 99 at intersection with Boyles Rd. n of Chico. 60 Comment
  UC1562380  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1990-6-1 6504 Butte on s edge of Durham Highway about 3 mi e Durham (about 1 mi w of Highway 99) 60 Comment
  CHSC46584  Polemonium occidentale V. Oswald; L. Ahart 1989-7-21 3871 Butte Near the junction of Willow and Colby creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. On the west border of the meadow near Humboldt Rd. 1490 Comment
  JEPS118324  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CDA13254  Polygala cornuta G. F. Hrusa, T. D. Wilfred 1996-7-8 13102 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC4731  Polygala cornuta R. Carter 1966-6-12 425 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd., on bank above road; ca. 17 mi. E of Oroville. Comment
  SEINET10493886  Polygala cornuta Lowell Ahart 1985-6-30 Ahart 5081 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC20497  Polygonum aviculare M. S. Taylor 1975-5-24 770 Butte Abundant weed in lawns, 1456 Arcadian, Chico. 60 Comment
  CHSC71261  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte Along the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
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Jan 19 2011
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CAS-BOT-BC413924  Polygonum aviculare subsp. aviculare Lowell Ahart 1980-5-10 2232 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC39126  Polygonum bidwelliae R. A. Schlising 1980-5-26 3603 a Butte S of the village of Cohasset. Comment
  CHSC40067  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Thin soil on volcanic rocks along the Neale grade between Chico and Paradise. Comment
  CHSC60131  Polygonum bidwelliae B. Castro; L. P. Janeway 1992-5-9 451 Butte On SE-facing slope of unnamed canyon SE of Neal Road, on lava benches. 73 Comment
  JEPS117281  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico 120 Comment
  CHSC44926  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-7-31 6158 Butte Near the road, on the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air mile north-east of Stirling City. 1066 Comment
  CHSC58945  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  SEINET10479646  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6715 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 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
  CHSC39128  Polygonum parryi R. A. Schlising; J. Jokerst, R. Banchero 1980-6-16 3712 Butte 0.1 mi s of jct Humboldt Road and Skyway at Butte Meadows, along Skyway in meadow. Comment
  CHSC40783  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  UC1509633  Polygonum persicaria L. Ahart 1982-10-6 3845 Butte ca 3 mi ne Hocut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  UC726284  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Chaparral; banks of streamlet 1524 Comment
  CHSC44227  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CDA22844  Polygonum punctatum L. Ahart 2006-10-8 13428 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. Comment
  SEINET11715827  Polypodium californicum J. D. Mott 1978-1 13 Butte West Branch Feather River 280 Comment
  CHSC106573  Polypodium calirhiza C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC33346  Polypodium calirhiza Steve Alvarez 1980-3-24 13 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway. 270 Comment
  CHSC90136  Polypodium calirhiza Jack Judkins 1983-4-16 5 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  JEPS117728  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SEINET10530416  Polypodium glycyrrhiza Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3469 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CHSC99009  Polypogon australis Lowell Ahart 2008-5-21 14778 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
  UCD90971  Polypogon australis A. A. Heller 1913-6-4 10775 Butte Table Mountain Olive Ranch north of Oroville. Comment
  CHSC30550  Polypogon interruptus J. D. Jokerst; M. S. Taylor 1980-9-11 635 Butte Adjacent to rice fields, 50 ft N of Goodspeed-Watt Rd, 0.2 mi N of its jct with Nelson Rd (ca 6 mi S of Chico). 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
  RSA0118753  Polypogon interruptus Lowell A. Ahart 2014-4-16 19369 Butte On the sides but near the top 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. 30 Comment
  CHSC46106  Polypogon monspeliensis L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1536 Butte Just north of Rutherford Rd. ca 100 met. west of its junction with Pennington Rd. Grey Lodge Waterfowl Management Area. Comment
  CHSC39312  Polystichum imbricans Lowell Ahart 1983-6-26 4122 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville-Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. The sign gives Big Ridge Road not Ponderosa Way. 500 Comment
  CHSC87884  Polystichum imbricans subsp. curtum Lowell Ahart 2004-6-22 11118 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 628 Comment
  CHSC116274  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-24 20584 Butte 100 yards southwest of the bridge across Butte Creek, on the north side of Doe Mill Road, about 3 miles (air) north of De Sabla Resevoir. 660 Comment
  JEPS104593  Polystichum imbricans subsp. imbricans Lowell Ahart 2003-7-30 10459 Butte Along a small stream, on the n side of Little Bald Rock, on the south side of Bean Creek road, ca 2 mi (air) se of Brush Creek. 1000 Comment
  CAS-BOT-BC76653  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  CAS-BOT-BC452107  Potamogeton crispus M. S. Taylor 1979-10-2 2216 Butte On e bank of Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC55813  Potamogeton diversifolius Vernon H. Oswald; Lowell Ahart 1991-8-28 4856 Butte Impoundment just south of the Clay Pit Area of the Oroville Wildlife Area, on the east side of Larkin Rd, ca. 2 miles south of Hwy 162, Thermalito. In a pond. 39 Comment
  CHSC65474  Potamogeton filiformis Vernon Oswald 1987-5-25 2927 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. In a pond along a channel. 79 Comment
  RSA0034523  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  RSA733904  Potamogeton gramineus W. H. Lang 1954-8-12 s.n. Butte Biggs Rice Experimental Station. Comment
  JEPS102326  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 Butte about 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, W side of North Honcut Creek) 38 Comment
  SEINET11664887  Potamogeton natans L. P. Janeway 1987-1 2166 Butte along French Creek across from mouth of Ram Creek 617 Comment
  POM313007  Potamogeton nodosus H. L. Mason 1947-7-10 12640 Butte Sanford Slough, Butte Sink, southwest corner of Butte county. Comment
  RSA4416  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CHSC38645  Potentilla glandulosa subsp. glandulosa Vernon Oswald 1983-5-11 472 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  CHSC45610  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  SEINET10871270  Potentilla glandulosa subsp. reflexa Mary Susan Taylor 1976-5-5 Taylor 1115 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  CHSC41286  Prunella vulgaris var. lanceolata S. C. Morey 1983-7-21 506 Butte Cherry Hill Meadow. On the n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC43832  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2288 Butte At Rag Dump. 1173 Comment
  CHSC775  Prunella vulgaris var. lanceolata M. Underhill 1952-7-2 Butte 609 Comment
  CHSC92554  Prunus avium L. P. Janeway; C. Christofferson, M. Brown, S. Mackey Hillaire 2005-4-19 8363 Butte Northern High Sierra Nevada. Plumas National Forest; in small upper drainage of Flea Valley Creek, about 560 m east-northeast of junction of Concow Road and Rim Road (Ponderosa Way). 841 Comment
  CHSC52697  Prunus caroliniana L. P. Janeway 1990-3-25 3659 Butte Campus of California State University, Chico. S side of Big Chico Cr at bridge between Sylvester's Cafe-by-the-Creek and Holt Hall. 59 Comment
  CDA43085  Prunus cerasifera L. P. Janeway 2012-2-28 10786 Butte Northern Sierra Nevada Foothills.; Oroville; east side of the Feather River about 150 m southeast of the Thermalito Diversion Dam. Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  CHSC44372  Pseudognaphalium stramineum Lowell Ahart 1988-6-23 6079 Butte Meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CAS-BOT-BC357590  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
  POM219373  Pseudostellaria jamesiana H. F. Copeland 1931-6-10 1526 Butte Jonesville, between Jones and Willow Creeks 1524 Comment
  UC478521  Pseudostellaria jamesiana E. B. Copeland 1930-6-24 637 Butte Jonesville 1500 Comment
  SEINET10530889  Pseudotsuga menziesii Mary Susan Taylor 1976-2-22 Taylor 1000 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CHSC25481  Psilocarphus brevissimus var. brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC361828  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CAS-BOT-BC361917  Psilocarphus tenellus Lowell Ahart 1983-8-16 4304 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows 1600 Comment
  CAS-BOT-BC148606  Ptelea crenulata Mrs. C. C. Bruce 1897-4-1 1803 Butte Forest Ranch Comment
  CHSC27909  Pteridium aquilinum var. pubescens M. S. Taylor 1978-7-19 1742 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC32685  Pteridium aquilinum var. pubescens M. S. Taylor; L. Hanson 1981-3-31 3451 Butte SE side of Spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  CHSC48672  Pterospora andromedea Vernon Oswald 1983-7-6 811 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CAS-BOT-BC147770  Purshia tridentata var. tridentata V. Oswald; L. Ahart 1988-7-29 3639 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC74095  Pycnanthemum californicum B. Castro 1998-7-28 813 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt road at E edge of old homestead site. 929 Comment
  SD3521  Pyrola asarifolia subsp. asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville, shady places near streams 1500 Comment
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  CAS-BOT-BC462603  Pyrola dentata A. A. Heller 1914-7-23 11597 Butte About Chico meadows 1219 Comment
  UC474252  Pyrola picta H. F. Copeland 1930-7-26 Butte Jonesville Comment
  UC474258  Pyrola picta H. F. Copeland 1928-8-25 1018 Butte Jonesville, The Summit Jonesville Comment
  UC478488  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville Comment
  CAS-BOT-BC466010  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  RSA0083380  Pyrola picta H. F. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CHSC25470  Quercus berberidifolia Hayes; Warner 1977-9-11 65 Butte Along Hwy 32 at Toll Gate Way below Forest Ranch, exactly 14.4 mi from the Hwy 99 overpass. 609 Comment
  SBBG50492  Quercus berberidifolia J. T. Howell 1955-6-15 Butte 6 mi from Paradise on Rd to Pentz 426 Comment
  UC1135513  Quercus berberidifolia J. E. Sowder, C. G. Albertus 1933-6-26 94 Butte 1 mi ne Nelson's Bar; Chico Quad. 457 Comment
  CAS-BOT-BC62687  Quercus chrysolepis Lowell Ahart 1981-7-7 2918 Butte About 0.5 mile west of the Oroville Forbestown Road on the Black Bart Road, west of Forbestown 700 Comment
  UC1135364  Quercus chrysolepis C. G. Albertus 1933-5-26 2 Butte 0.5 mi s Nelson's Bar; Chico Quad. 365 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
  UC2026888  Quercus coccinea Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18224 Butte North side of paved park road, north of South Park Drive, east of Caper Acres Playground, about 150 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  HSC32631  Quercus douglasii Gary S. Lester 1974-4-20 101 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  POM106172  Quercus douglasii C. C. Bruce 1897-05 1797 Butte Little Chico. Comment
  CAS-BOT-BC86118  Quercus dumosa H. F. Copeland 1939-8-8 1575 Butte Humboldt Road 12 miles E of Chico Comment
  CHSC97044  Quercus durata B. Castro; Plumas NF/Feather River botanists 2005-6-23 1490 Butte At E edge of ridge above Magalia, off E end of Hollywood Drive, in USFS parcel about midway between Paradise Lake and Magalia Res., overlooking Little Butte Ck. On isolated serpentine outcrop. 755 Comment
  CHSC46734  Quercus durata var. durata Lowell Ahart 1979-6-9 1926 Butte Along a dirt road about 1/2 mile north-east of Magalia. 640 Comment
  CAS-BOT-BC61585  Quercus lobata A. A. Heller 1915-4-1 11791 Butte Low flat in the Sacramento valley near Durham 68 Comment
  OBI69220  Quercus lobata Kari Fisher, Bill Fisher 2000-10-8 23 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  RSA87180  Quercus lobata E. E. Stanford 1930-6-15 1549 Butte Near Chico. Comment
  CHSC48386  Quercus vacciniifolia Vernon Oswald 1987-5-21 2917 Butte East of Jonesville on the road connecting Humboldt and Humbug Rds, 1.6 mi w of Scotts John Creek. 1706 Comment
  UCD47409  Quercus vacciniifolia J. I. Mallory 1970-8-20 380 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  UCD47414  Quercus vacciniifolia Leonard H. Day 1948-7-11 s.n. Butte Lava Top, in Butte County, ca. 1 mile south of Cascade (Plumas County), California. 1435 Comment
  UC143209  Quercus wislizeni Mrs. R. M. Austin Apr 1896 781 Butte near Chico Comment
  UC478518  Ranunculus alismifolius var. alismifolius E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  SD1770  Ranunculus aquatilis E. B. Copeland 1929-7-28 360 Butte Jonesville, in cold streams 1500 Comment
  UCSB46182  Ranunculus aquatilis var. aquatilis Reisentz, Paul 1979-5-13 Butte 1.3 miles west on Lunt Road from Highway 70 North of Oroville Comment
  POM150530  Ranunculus aquatilis var. capillaceus E. B. Copeland 1903-5-30 3276 Butte Chico. Comment
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Jan 23 2011
  JEPS119685  Ranunculus arvensis Lowell 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. Comment
  SEINET10833574  Ranunculus flammula var. filiformis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4188 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC50056  Ranunculus hebecarpus Lowell Ahart 1990-3-19 6421 Butte At the base of banks along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC53700  Ranunculus hebecarpus Kirsten Tarp 1982-4-8 111 Butte Near Oroville Dam. Comment
  CHSC1487  Ranunculus muricatus R. Morford 1941-4-21 Butte Butte Creek. 121 Comment
  RSA754961  Ranunculus muricatus L. Ahart 2009-5-15 15698 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  UC1561857  Ranunculus muricatus Barbara Ertter with Lowell Ahart 1986-4-13 5888 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  POM99241  Ranunculus muricatus C. C. Bruce 1897-04 1890 Butte [No location data on label] Comment
  RSA126011  Ranunculus occidentalis var. ultramontanus E. K. Balls 1957-5-22 22518 Butte SW shore, Lake Almanor, W of Big Meadows Dam, 1402 Comment
  CHSC52693  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 316 Butte S of Butte Creek House ca. 32 air miles ne of Chico; in meadow. 1828 Comment
  CHSC63268  Ranunculus sardous Lowell Ahart 1994-6-6 7312 Butte North of the corral, on the north side of the bend in Cottonwood Road, about 1/4 mile west of Highway 70, about 3 1/2 miles (air) north-west of Oroville. 57 Comment
  CHSC43545  Ranunculus sceleratus Lowell Ahart 1982-5-10 3432 Butte In our rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 Comment
  CAS-BOT-BC59570  Rhamnus John Thomas Howell 1975-6-15 51118 Butte Sierra Nevada - Paradise - Skyway near Billie Road 609 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-BC59876  Rhamnus ilicifolia John Thomas Howell 1962-6-15 374512 Butte Magalia. 731 Comment
  CAS-BOT-BC59881  Rhamnus ilicifolia Lowell Ahart 1989-5-29 6303 Butte Along Robinson Mill Road, about 1.5 mi. s. of Forbestown Road. 670 Comment
  HSC100722  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte Along Guardian Rock Trail, 5/8 (air) mi. SW of intersection of Ten Mile House Rd. and Hwy. 32, Upper Bidwell Park, 10 mi. NE of Chico. 386 Comment
  RSA719541  Rhamnus rubra Michael A. Vincent, K. Levings 2006-7-29 12885 Butte NE of Chico along Rt. 32. Comment
  UC600525  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville Comment
  CHSC33791  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-7-10 4066 Butte North side of Feather River Hwy 70 at Pulga Bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  UC2026886  Rhododendron Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC27185  Rhododendron X morelianum P. Moyer; R. Pessner 1971-9-26 7 Butte CSUC Campus. E side of Bldg. A. 60 Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 Comment
  UC175522  Rhododendron occidentale A. A. Heller 1913-6-7 10800 Butte near Stirling 1074 Comment
  UC455448  Rhododendron occidentale Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC103705  Rhus aromatica Lowell Ahart 2010-5-14 16674 Butte On the south side of the Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 301 Comment
  SEINET10454080  Rhus trilobata Mary Susan Taylor 1975-4-25 Taylor 505 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  SEINET10973030  Rhus trilobata var. malacophylla Mary Susan Taylor 1980-4-19 Taylor 2542 Butte S side of Butte Creek, on dry bluffs above the creek in Foothill Woodland, ca. 1/4 mi upstream from Honey Run Covered Bridge, ca.. 6 mi E of Chico. With J.D. Jokerst. 183 Comment
  CAS-BOT-BC111889  Rhynchospora californica V. Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. & Salmon Hole near Parking Area O. 182 Comment
  JEPS98291  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC45181  Rhynchospora capitellata Lowell Ahart 1980-7-20 2481 Butte In a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  UC1594576  Rhynchospora capitellata Lowell Ahart 1992-8-2 6901 Butte about 3 (air) mi ne Concow Reservoir (w side of meadow); Concow Meadow 1097 Comment
  CAS-BOT-BC111923  Rhynchospora glomerata var. minor Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  UCR190824  Ribes 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
  CHSC22688  Ribes amarum R. A. Schlising 1963-5-4 2563 Butte South of Cohasset, 5.2 miles north of Jct. Cohasset Hwy and Kiefer Road, along Cohasset Hwy. Comment
  UC478512  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CAS-BOT-BC212669  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  SBBG29145  Ribes nevadense E. B. Copeland 1931-7-31 Butte near Butte Crk, Jonesville 1550 Comment
  UC725920  Ribes roezlii A. A. Heller 1939-4-26 15384 Butte at foot of the grade leading down from Stirling City 914 Comment
  CAS-BOT-BC173954  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC99658  Robinia pseudoacacia H. Koeth; K. Schierenbeck 2007-2-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  SBBG119803  Rorippa curvisiliqua L. Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, ca. 2 mi N and 0.5 mi E of Honcut, ca. 12 mi S of Oroville 31 Comment
  CHSC539  Rorippa curvisiliqua var. orientalis M. Anthony 1954-5-30 Butte Rag Dump 5, Concow. 609 Comment
  JEPS120657  Rorippa curvisiliqua var. orientalis Lowell Ahart 2013-10-26 19210 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC4357  Rorippa nasturtium-aquaticum R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  CHSC529  Rorippa nasturtium-aquaticum M. Underhill 1952-7-21 Butte Stream. 304 Comment
  JEPS122200  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  POM90181  Rosa californica C. C. Bruce 1897-06 1807 Butte Little Chico. Comment
  CDA3956  Rosa eglanteria L. Ahart 2002-5-15 9660 Butte About 100 yards southwest of Parking Lot 10, about 100 yards northeast of the buildings, on the south side of the dirt road, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC82390  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, and 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Along the road. 548 Comment
  JEPS94329  Rosa pisocarpa subsp. ahartii Lowell Ahart 1997-8-1 7797 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on the bottom of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  CHSC50561  Rosa pisocarpa subsp. pisocarpa Vernon Oswald; Lowell Ahart 1990-7-5 4346 Butte Camping area along Butte Creek on F-Line, 0.4 mi southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. On the bank of the creek. 1316 Comment
  CAS-BOT-BC274230  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  UC1586509  Rotala ramosior Vernon H. Oswald and Lowell Ahart 1991-8-28 4849 Butte 3.5 mi nw of Biggs (Rice Experimeent Station on s side of Highway 162); Rice Experimeent Station, Highway 162 30 Comment
  CDA37501  Rotala ramosior P. B. Kennedy Aug 1915 76 Butte Biggs. 0 Comment
  POM366458  Rubus discolor L. Ahart, P. Ahart 1984-6-10 4716 Butte About 2 miles SW of Forbestown Diversion Dam. NE of Forbestown. 700 Comment
  CHSC84739  Rubus glaucifolius L. P. Janeway; Christine Hantelman 2003-6-19 7850 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. 280 Comment
  UC861595  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte borders Chico meadows 1219 Comment
  CHSC45813  Rubus laciniatus L. P. Janeway 1987-6-5 2136 Butte Along French Cr Rd at Little Ram Cr 3.0 mi NE of OroQuincy Hwy and Stanwood Saddle. 838 Comment
  CAS-BOT-BC147200  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 Comment
  CHSC46047  Rubus parviflorus L. P. Janeway 1987-6-5 2152 Butte Upper reach of Carey Gulch where rd 22N89 crosses it 0.5 mi from OroQuincy Hwy. Edge of rd near cr. 1097 Comment
  POM193375  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville. 1600 Comment
  CHSC24685  Rubus ursinus D. Hattem 1976-4-10 10 Butte Ca. 20 m ne of Chico Creek, ca. 10.2 mi ne of Chico. 304 Comment
  SEINET10479372  Rumex acetosella Mary Susan Taylor 1978-7-21 Taylor 1806 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  JEPS124339  Rumex conglomeratus Lowell Ahart 2015-10-16 20554 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC31770  Rumex crispus L. Ahart 1977-6-26 1440 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33685  Rumex dentatus L. Ahart 1981-5-16 2804 Butte In low places on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CDA42867  Rumex pulcher L. Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CHSC116700  Rumex pulcher Lowell Ahart 2016-5-14 20828 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC43716  Rumex salicifolius Vernon Oswald 1987-7-13 3102 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  JEPS115726  Rumex stenophyllus Lowell Ahart 2009-7-4 15996 Butte On the sides of the road, near parking lot 18, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  SEINET10871638  Rumex triangulivalvis var. oreolapathum Lowell Ahart 1984-6-8 Ahart 4675 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC40787  Sagina apetala Lowell Ahart 1985-3-4 4842 Butte Along the edge of the curb, at the Palermo Post Office, Palermo. 40 Comment
  CHSC109087  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte Seep along a small wash, east of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. 243 Comment
  CHSC113224  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-2 19433 Butte On the south side and below the high water line of the reservoir, about 2 1/2 miles (air) west of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 288 Comment
  CHSC29719  Sagina decumbens subsp. occidentalis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 428 Butte Top of North Table Mt, ca 1.0 mi n of jct of E edge of Mt and Cherokee Rd. Around vernal pools. 381 Comment
  CHSC23688  Sagittaria latifolia K. Stern 1970-6-1 Butte Growing in ditch in Rancho Llano Seco. Comment
  POM106846  Salix exigua C. C. Bruce 1897-05 1784 Butte Little Chico. Comment
  CHSC109067  Salix exigua var. hindsiana Lowell Ahart 2012-4-20 17888 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 203 Comment
  JEPS115629  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  UC478540  Salix lasiandra subsp. lasiandra E. B. Copeland 1931-6-10 Butte Jonesville 1500 Comment
  CAS-BOT-BC125177  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CHSC1622  Salix lasiolepis V. Holt 1958-2-17 Butte Along Sandy Gulch near Chico. 60 Comment
  CHSC21069  Salix lasiolepis M. S. Taylor 1974-4-26 525 Butte On se side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  JEPS119598  Salix lasiolepis Lowell Ahart 2012-4-9 17827 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129587  Salix lasiolepis var. lasiolepis Lowell Ahart 1982-5-8 3408 Butte Near the Forbestown Res, about 1 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 800 Comment
  CAS-BOT-BC129620  Salix lasiolepis var. lasiolepis Peter H. Raven 1953-5-9 5451 Butte 6.5 miles from Bangor on road to Oroville Comment
  CHSC38665  Salix melanopsis Vernon Oswald 1983-5-22 526 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC42545  Salix melanopsis Lowell Ahart 1987-4-30 5491 Butte North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC176898  Salsola tragus John Thomas Howell 1975-6-15 51064 Butte Chico 60 Comment
  POM71110  Salvia sonomensis C. C. Bruce 1897-05 1983 Butte Forest- Ranch. Comment
  SEINET10939821  Sanicula bipinnata Mary Susan Taylor 1981-5-5 Taylor 3618 Butte T20N R6E ne sec 11. Forbestown quad. E side of spur rd off 21N35Y, ca. 0.5 mi SE of Feather Falls trailhead, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  SEINET12121437  Sanicula bipinnata R. S. Mitzel 1982-1 3 Butte ca 50 yds S of Horseshoe Lake in Upper Bidwell Park, 3 mi NE of Chico 61 Comment
  JEPS113192  Sanicula bipinnatifida Lowell Ahart 2007-4-30 13711 Butte On the east edge of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles (air) northwest of Concow Reservoir 637 Comment
  CHSC93458  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
  CHSC42094  Sanicula graveolens Lowell Ahart 1986-7-2 5345 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
  CHSC99587  Sanicula graveolens L. P. Janeway 2008-5-26 9389 Butte Northern High Sierra Nevada. Low ridge near saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  UC1605152  Sanicula tuberosa Vernon H. Oswald and Lowell Ahart 1993-4-19 5278 Butte ENE of Magalia (Rattlesnake Creek Trail from Jordan Hill Rd to Sawmill Pk. Lookout, between the creek and the lookout) 701 Comment
  UCD80215  Saponaria officinalis CNPS SN Foothill Team 2005-7-6 SNNR 0478 Butte CDFG Daugherty Hill Wildlife Area. 242 Comment
  UC392198  Sarcodes sanguinea E. B. Copeland Jul 1929 Butte Jonesville 472 Comment
  CAS-BOT-BC436859  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET8720392 Image available Saxifraga integrifolia E. B. Copeland 1929-1 369 Butte Jonesville. 1550 Comment
  CHSC4413  Schoenoplectus acutus var. occidentalis J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park. Chico. Comment
  SEINET10502775  Scirpus Mary Susan Taylor 1980-6-7 Taylor 2790 Butte S side of Hwy 162, at Butte County/ Glenn County border, ca. 20 mi N of Chico. 30 Comment
  SFV12648  Scirpus acutus var. occidentalis M. L. Vincent 1963-6-10 424 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  UC1100776  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-7 12993 Butte Gridley Road n Butte Sink (Big Pond near river, Grey Lodge Game Refuge); Grey Lodge Game Refuge, n of Butte Sink Comment
  CHSC56795  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-16 3033 Butte Large meadow at 'headwaters' of Willow Creek. 1935 Comment
  NY380581  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  RSA4222  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  CHSC116225  Scleranthus annuus subsp. annuus Lowell Ahart 2015-6-16 20228 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC35035  Scleranthus annuus subsp. annuus R. A. Schlising 1981-4-11 4024 Butte Along Hwy 32 S of Forest Ranch. Immediate roadside. Comment
  CHSC50031  Scleranthus annuus subsp. annuus Lowell Ahart 1990-4-15 6460 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  UC768855  Scribneria bolanderi R. F. Hoover 1936-5-21 1159 Butte 3 mi n of Chico Comment
  CHSC51277  Scrophularia californica subsp. floribunda Lowell Ahart 1990-10-21 6634 Butte Growing below the high water line of Lake Oroville, about 1mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 243 Comment
  CHSC42832  Scutellaria californica L. P. Janeway 1987-5-20 2074 Butte Along hwy 70 1.7 mi NE of Pulga bridge; N Fk Feather River at Poe Dam. 472 Comment
  SEINET10836980  Scutellaria californica Mary Susan Taylor 1978-7-19 Taylor 1729 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC52203  Scutellaria tuberosa L. P. Janeway 1988-5-19 2669 Butte Along Cohasset Rd near the Anderson Mill site; near the county line. 1133 Comment
  CHSC90598  Sedella pumila Lisa J. Newsum 1984-4-19 15 Butte Cohasset Rd., 1/2 mi s of Keefer Rd. and Cohasset Rd. jct., 10 1/2 mi ne of Chico. 91 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
  RSA256645  Sedella pumila David Johnson 1974-4-20 48 Butte Table Mt. Comment
  CHSC28648  Selaginella hansenii M. S. Taylor 1979-3-20 1959 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC28666  Selaginella wallacei J. D. Jokerst 1979-7-1 402 Butte Upper most rim rock S.E. of Big Chico Cr. 365 Comment
  CAS-BOT-BC69728  Selaginella wallacei Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10874645  Selaginella wallacei Mary Susan Taylor 1980-4-6 Taylor 2439 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC27964  Senecio aronicoides M. S. Taylor 1978-7-19 1781 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of is jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  SD5873  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  RSA32802  Senecio eurycephalus var. lewisrosei A. A. Heller 1938-5-28 s.n. Butte Feather River Hwy, 23 miles from Oroville Comment
  SEINET10474908  Senecio eurycephalus var. lewisrosei Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4088 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC38386  Senecio sylvaticus Vernon Oswald 1983-4-24 358 Butte Upper Bidwell Park, Chico, a Diversion Dam. On outcrops overlooking the creek. 115 Comment
  CAS-BOT-BC364272  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  CAS-BOT-BC364274  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  SD5891  Senecio triangularis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  SEINET10938099  Senecio vulgaris Mary Susan Taylor 1982-4-28 Taylor 4354 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
  SEINET10569490  Sequoia sempervirens Carpenter 1975-4-8 Carpenter 3 Butte Individual, ca 100 yd S of Jct. 4th & Citrus Ave., Chico. Tree ca 100 ft tall. Ornamental planting in exposed r. grassland area. 30 Comment
  SEINET10612365  Sequoia sempervirens Carpenter 1975-4-8 Carpenter 3 Butte Butte County: Individual, Ea. 100 yards south of Junction 4th & Citrus Avenue Avenue, Chico. Tree 100 feet tall. Ornamental planting in exposed r. grassland area. Comment
  SEINET10901939  Setaria glauca Mary Susan Taylor 1979-10-3 Taylor 2221 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CHSC31627  Setaria pumila L. Ahart 1975-6-23 802 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UC1563269  Setaria pumila unknown 1990-10-21 6638 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  UCD92723  Setaria pumila G. F. Hrusa; T. D. Wilfred 1996-9-6 13573 Butte on E side of Butte Creek, approx. 1/2 mile NE of confluence with Howard Slough and immediately below McPherrin Dam (private and scheduled for removal). 23 Comment
  CHSC109760  Setaria pumila subsp. pumila Lowell Ahart 2012-10-20 18493 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS115247  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET10500670  Sherardia arvensis Mary Susan Taylor 1979-3-31 Taylor 1975 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  SD2239  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville, open north slope 2000 Comment
  CHSC29405  Sidalcea asprella R. A. Schlising; R. Banchero 1980-6-19 3746 Butte N of Oroville and S of Concow Res., 0.3 mi N of Concow School (which is at jct Nelson and Concow Roads). 518 Comment
  UC1013144  Sidalcea asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mi e Forbestown Comment
  SEINET10904427  Sidalcea calycosa Mary Susan Taylor 1980-3-28 Taylor 2408 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  UC203663  Sidalcea calycosa subsp. calycosa A. A. Heller 1914-5-8 11381 Butte Comment
  UC220520  Sidalcea diploscypha H. E. Brown May 1-15 1897 Butte near Clear Creek; near Clear Creek 53 Comment
  JEPS97945  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC10735  Sidalcea hartwegii Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC71182  Sidalcea hartwegii Lowell Ahart 1988-6-9 7992 Butte About 300 yds west of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  POM253295  Sidalcea hartwegii A. A. Heller 1938-4-17 15040 Butte Stony slope back of the Salmon Hole Chico creek east of Chico Comment
  UCD116736  Sidalcea hartwegii Bess Fuller 1962-5-8 s.n. Butte at the spring 0.5 mile west of 5330 Harrison Road, Paradise. Comment
  SEINET10480006  Sidalcea malviflora subsp. asprella Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4283 Butte T19N R4E sw/ne sec l. Oroville Dam quad At end of Beckwith Rd just above Oroville Dam overlook parking area, Oroville. Foothill Woodland; 1050 ft. 320 Comment
  CHSC76948  Sidalcea robusta Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  JEPS115622  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  CHSC50664  Silene antirrhina Lowell Ahart 1990-5-25 6478 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. 259 Comment
  CAS-BOT-BC174846  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte N part of county e of Inskip and near Jones Meadow 1734 Comment
  CHSC212  Silene bridgesii V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC11855  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville. Near 'the Summit. 2100 Comment
  CAS-BOT-BC387071  Silene gallica Lowell Ahart 1980-5-17 2268 Butte .5 mile SE of Hurleton Comment
  CHSC82633  Silene laciniata subsp. californica Tara Morgan 2002-4-23 31 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. On the side of the trail. 414 Comment
  CHSC9280  Silene laciniata subsp. californica D. C. Burns 1971-4-2 109 Butte On n side of Cohasset rd. ca. 1.5 mi w of the intersection of Cohasset rd. and Vilas rd. 487 Comment
  SEINET10537593  Silene pratensis Mary Susan Taylor 1982-6-24 Taylor 4726 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. l mi se of Flea Mt, 1.7 mi se of Ponderosa Way (Rim Rd), 8.9 mi n of Jarbo Gap on Hwy 70, ne of Oroville. Mixed Evergr Forest Comment
  CHSC38388  Silybum marianum Vernon Oswald 1983-4-18 329 Butte Upper Bidwell Park, Chico, on the north slope w of Horseshoe Lake. Beside an old jeep trail. 109 Comment
  JEPS98990  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) SW of Gridley. 22 Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC34530  Sinapis arvensis R. E. Preston 1982-2-18 167 Butte N side of Keefer Lane ca. 0.4 mi w of Cohasset Hwy; ca. 6 mi n of downtown Chico. In stock pen. 106 Comment
  CHSC108990  Sisymbrium officinale Lowell Ahart 2012-4-30 17933 Butte On the sides of Bloody Pin Trail, about 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 317 Comment
  CHSC11380  Sisymbrium officinale Lowell Ahart 1972-5-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC600564  Sisyrinchium bellum H. F. Copeland 1920-7-29 465 Butte Jonesville Comment
  SEINET10472651  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1978-7-18 Taylor 1700 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC42429  Solanum parishii Lowell Ahart 1987-5-9 5599 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  CHSC43779  Solanum rostratum Vernon Oswald 1986-7-23 2223 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Roadside on the edge of vernal pond. 48 Comment
  CAS-BOT-BC157482  Solanum umbelliferum R. R. Kehlor 1951-3-10 12 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville Comment
  CHSC30664  Solidago elongata M. S. Taylor 1978-7-21 1832 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte County-Plumas County line. 1341 Comment
  CAS-BOT-BC364940  Solidago velutina subsp. californica Lowell Ahart 1977-11-15 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 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
  CHSC103696  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a 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
  CAS-BOT-BC365841  Soliva sessilis Lowell Ahart 1989-5-10 6219 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 274 Comment
  CHSC107291  Sonchus asper subsp. asper L. P. Janeway 2011-6-29 10408 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CDA13256  Sorbus scopulina var. cascadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13107 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC49689  Sparganium emersum subsp. emersum Vernon Oswald 1987-6-23 3017 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. In a gravel pit. 1889 Comment
  UC1099803  Sparganium eurycarpum var. eurycarpum Herbert L. Mason and Verne Grant 1946-8-14 13016 Butte Butte Sink; Sacramento Outing Club Comment
  CHSC29108  Spartium junceum M. S. Taylor; J. D. Jokerst 1980-4-27 2565 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  SEINET10452463  Spartium junceum Mary Susan Taylor 1975-4-26 Taylor 524 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC98980  Spergula arvensis subsp. arvensis Lowell Ahart 2008-5-8 14711 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
  CHSC91098  Spergularia bocconi Lowell Ahart 2005-5-28 11827 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  CAS-BOT-BC390597  Spergularia rubra John Thomas Howell 1962-6-16 37585 Butte 3.5 mi. n. of Pentz 396 Comment
  CHSC42801  Spiraea douglasii L. P. Janeway 1987-6-26 2317 Butte SW end of Logue Meadows. 1325 Comment
  JEPS105909  Spiraea douglasii Lowell Ahart 2004-8-2 11331 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
  CAS-BOT-BC421452  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back and east of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  LA208284  Spiraea splendens E. B. Copeland; 1931-6-19 649 Butte Jonesville, at the Summit 640 Comment
  CHSC25365  Spiranthes porrifolia Hayes; Warner 1977-8-14 39 Butte Along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  CHSC42985  Stachys ajugoides var. rigida L. P. Janeway 1987-7-4 2407 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  SEINET10498820  Stachys palustris subsp. pilosa Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4217 Butte T21N R5E nw sec 31. Ca. 2.5 mi w on Bloomer Hill Rd from Oroville-Quincy Hwy, ca. 13 mi n of Oroville. Foothill Woodland; 500 m. 500 Comment
  CDA13910  Stachys pycnantha G. F. Hrusa, T. D. Wilfred 1997-7-3 13983 Butte Sierra Nevada; Little Butte Creek, N of Magalia and immed. E of Holmwood Drive. Comment
  CHSC99474  Stachys pycnantha Lowell Ahart 2008-7-23 15146 Butte 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
  CHSC50828  Stellaria calycantha Vernon Oswald; Lowell Ahart 1990-7-19 4369 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1981 Comment
  CHSC38305  Stellaria media Vernon Oswald 1982-12-3 19 Butte Bidwell Park, Chico, along edge of road leading to Police Pistol Range. 85 Comment
  CHSC98954  Stellaria media Lowell Ahart 2008-5-12 14752 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 west of the Ponderosa Dam. 258 Comment
  CHSC45565  Stellaria nitens Lowell Ahart 1975-3-23 714 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC395111  Stellaria nitens A. A. Heller 1916-4-13 12325 Butte Stilson canyon E of Chico Comment
  UC1594583  Stellaria obtusa Lowell Ahart 1992-7-21 6817 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  JEPS93969  Stellaria pallida Vernon Oswald 1998-4-6 8899 Butte North Table Mt. on the plateau on the s. side of Beaston Hollow (ca. 1.5 mi. w. of Cherokee Rd.); North Table Mt., Beaston Hollow 323 Comment
  CHSC42693  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3075 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the edge of the medium-sized (north) lake. 1935 Comment
  UC1609074  Stephanomeria lactucina Lowell Ahart 1993-6-26 7027 Butte about 1 mi w Lost Creek Reservoir (w side of dirt road); Mooreville Ridge 1188 Comment
  UC1609219  Stephanomeria lactucina Lowell Ahart 1993-7-22 7071 Butte w side of dirt road about 1/4 mi nw Camp 18 (about 5 air mi ne of Feather Falls) 1219 Comment
  CHSC62436  Stephanomeria paniculata L. P. Janeway 1993-9-7 4587 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  SEINET10827380  Stipa lemmonii Robert A. Schlising 1978-4-23 Schlising 03229 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S.T. RR and Coutelenc Road; area of Cupressus macnabiana and Pinus sabiniana; with Festuca california and Elymus glaucus. Comment
  JEPS108756  Streptanthus Lowell Ahart 2006-7-16 12958 A Butte N side of Humboldt Road, abut 1 1/2 air mi SW of Butte Meadows 1435 Comment
  UCD163017  Streptanthus diversifolius D. O. Burge 2013-4-12 1389 Butte North Table Mountain, Campbell Creek watershed, just west of Oregon City, accessed via Cherokee Road, parking 5.8 road miles (9.3 km) south of intersection with SR 70. 400 Comment
  CAS-BOT-BC87391  Streptanthus longisiliquus Lowell Ahart 1983-6-30 4187 Butte About 3 miles southeast of Stirling City, on the west side of the West Branch of the Feather River. 1100 Comment
  CHSC39408  Streptanthus longisiliquus L. Ahart 1983-9-17 4434 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. 1100 Comment
  CHSC93960  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