Search Results — 2000 specimen records retrieved (1627 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CAS-BOT-BC73553  Abies concolor Lowell Ahart 1984-9-26 4812 Butte South Fork of the Feather River, near the new bridge, about 1 mile north of Goldn Trout Crossing, 700 Comment
  CHSC108830  Acer negundo Lowell Ahart 2012-4-17 17871 Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. 28 Comment
  JEPS119750  Acer saccharinum Lowell Ahart 2012-5-17 18087 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC218045  Achnatherum stillmanii Lowell Ahart 1980-6-22 2446 Butte 1 mile NE of Woodleaf 1000 Comment
  CHSC64063  Achyrachaena mollis Michael Deal 1992-4-21 19 Butte Vina-Cana Rd., ca. 0.25 mi n of Pine Creek, ca. 12 mi nnw of Chico. 60 Comment
  CHSC75246  Achyrachaena mollis Jennifer Slater 1997-4-12 19 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CAS-BOT-BC29944  Achyrachaena mollis Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC116583  Acmispon americanus var. americanus L. P. Janeway 2015-7-20 11804 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC31803  Acmispon americanus var. americanus L. Ahart 1977-9-8 1567 Butte Peter Ahart Ranch. Along North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31097  Acmispon brachycarpus Diane M. Reilly 1980-4-19 19 Butte Ca. 2 m n off Big Bend Rd. on Pulga Rd, ca. 3 m off Hwy 70 ca. 25 mi e of Chico. 597 Comment
  CHSC33115  Acmispon brachycarpus M. S. Taylor 1981-5-14 3734 Butte N side of Feather River Hwy 70 at Plumas NF boundary sign, ca. 2 mi ne of Jarbo Gap. 609 Comment
  CHSC40432  Acmispon brachycarpus Lowell Ahart 1985-5-15 4972 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
  CHSC39345  Acmispon glaber Lowell Ahart 1983-6-26 4147 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. The sign gives Big Ridge Road insead of Ponderosa Way. 575 Comment
  CHSC40281  Acmispon glaber Lowell Ahart 1985-5-31 5037 Butte About 25 feet below the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Launch Area, about 1 mile west of the Ensterprise Bridge, north-east of Oroville. 274 Comment
  CHSC58913  Acmispon nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 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
  JEPS122195  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC36080  Actaea rubra R. A. Schlising 1982-6-23 4303 Butte N of Concow area in central part of county. 1219 Comment
  SEINET10473549  Adenocaulon bicolor Mary Susan Taylor 1977-8-17 Taylor 1466 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC30820  Adiantum capillus-veneris M. S. Taylor; J. D. Jokerst 1980-4-18 2540 Butte S side of Humbug Rd, ca. 1 mi ne of Centerville. 365 Comment
  SEINET3868326 Image available Adiantum jordanii M. S. Taylor 1980-3-1 2340 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi N of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico.; 0 122 Comment
  SFV82  Adiantum jordanii M. L. Vincent 1961-3-30 25 Butte Honeyrun Road, 0.5 miles west of Paradise. Near spring. 610 Comment
  CHSC38073  Aegilops triuncialis R. E. Preston 1982-7-5 325 Butte On W side of Notre Dame Blvd, Chico. Comment
  CHSC91468  Aegilops triuncialis 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
  CHSC101825  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC3136  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  CHSC102415  Agoseris grandiflora Lowell Ahart 2009-6-19 15918 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC32379  Agoseris grandiflora J. D. Jokerst 1980-6-15 839 Butte Oroville-Quincy Highway, ca. 2 mi N of the bridge over Lake Oroville, (the northernmost bridge). Comment
  CHSC107074  Agoseris grandiflora var. leptophylla L. P. Janeway 2011-6-29 10406 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
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  CHSC93354  Agoseris heterophylla var. heterophylla Lowell Ahart 2006-4-28 12543 Butte On the east side of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 313 Comment
Read comments
Jan 19 2011
  UCD146247  Agoseris retrorsa Daniel S. Park; D. Potter 2010-4-10 16 Butte Table Mt. Downhill trail across from waterfall. Growing on slope. 314 Comment
  CAS-BOT-BC127327  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  UC1594700  Agrostis exarata Lowell Ahart 1992-7-21 6810 Butte about 2 (air) mi ne Philbrook Reservoir (s side Coon Hollow); s side Coon Hollow 1737 Comment
  CDA13330  Agrostis exarata var. monolepis G. F. Hrusa, T. D. Wilfred 1996-7-9 13176 Butte Sierra Nevada; Slightly moist shade on roadside of 22N89 approx. 0.3 m from intersection with Hwy 162. Perennial. Comment
  SEINET10790042  Agrostis exarata var. monolepis Lowell Ahart 1982-5-28 Ahart 3440 Butte On damp to dry soil along edge of a small wash under trees, eE of North Honcut Creek, near Peter Ahart Ranch, ca. 3 miles NE of Honcut. 50 Comment
  CHSC78353  Agrostis hendersonii Lowell Ahart 2000-6-27 8515 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS113180  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  RSA726773  Agrostis hendersonii L. Ahart 2007-5-22 13899 Butte About 14 miles (air) northeast of Oroville. 956 Comment
  SEINET10510256  Agrostis idahoensis Vernon H. Oswald, Lowell Ahart 1959-8-15 Oswald 3944 Butte Soda Ridge Rd, 1.4 mi W of its junction with Coon Hollow Rd, ca 1.2 mi (air) n of Philbrook Reservoir. On a boggy meadow adjacent to a shallow spring-fed lake N of and visible from the road. 1753 Comment
  CHSC113105  Agrostis scabra Lowell Ahart 2013-10-26 19224 Butte Along 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
  CHSC39287  Agrostis scabra Lowell Ahart 1983-7-29 4220 Butte About 2 miles south of Milsap Bar, about 23 miles north-east of Oroville. 750 Comment
  UC573807  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadow Paynes Creek Quad. 1341 Comment
  UCD53293  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC63305  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte On the south edge of Cottonwood Road, on the east side of the overpass over Highway 70, about 3 1/2 miles (air) north of Oroville. 60 Comment
  RSA716149  Agrostis stolonifera L. Ahart 2005-7-13 12150 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
  JEPS117683  Agrostis thurberiana Lowell Ahart 2010-9-21 17214 Butte Open meadow-like area, 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
  CAS-BOT-BC138420  Aira caryophyllea Lowell Ahart 1987-5-6 5546 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC2116  Aira caryophyllea M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  JEPS114957  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte below the high water line of Lake Oroville, on the E side of Sucker Creek, about 40 yds N of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi W of the Ponderosa Dam 258 Comment
  UCD55800  Aira caryophyllea var. capillaris L. Ahart 1980-4-13 2079 Butte ca. 1.5 mi north and 3/4 mi east of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS88257  Alisma plantago-aquatica Vernon H. Oswald and Lowell Ahart 1996-6-10 7764 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (along edge of slough near center of e side of Tract 5, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  CHSC96944  Alisma triviale Lowell Ahart 2007-7-8 14277 Butte On the south side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC31406  Allium amplectens Jane A. Rogers 1979-4-17 15 Butte N roadside ca. 1 mi. w of intersection of Broyles Rd. and Hwy. 99E. 54 Comment
  CHSC36906  Allium amplectens Marc Hayes; R. Schlising 1978-5-22 3266 Butte NW part of county, n of Chico; along Cohasset Hwy, 4.3 mi n o f Mud Creek. Comment
  CHSC36908  Allium amplectens R. A. Schlising 1980-6-14 3707 Butte N of Lake Oroville and E of Berry Creek (village) at Big Bald Rock. 914 Comment
  CHSC4076  Allium amplectens H. E. Lindahl 1967-4-6 9 Butte Located 1.1 mi n of county dump on Neal Rd. Comment
  CHSC85425  Allium amplectens John Dittes 1992-5-5 467 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CHSC90579  Allium amplectens Jose Romero 1983-4-20 1 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  CHSC96559  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  JEPS82253  Allium amplectens Roger Raiche 1983-4-13 30188 Butte slope above Honey Run Covered Bridge (Honey Run Road) Comment
  CAS-BOT-BC460727  Allium amplectens J. D. Jokerst 1980-5-15 706 Butte Southeast of Cohasset Hwy; On top of Cohasset Ridge. 487 Comment
  CAS-BOT-BC460738  Allium amplectens A. A. Heller 1914-4-16 11299 Butte Chico-Centerville road, 2 miles from Chico. Comment
  SEINET176932  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CHSC45098  Allium cratericola R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yards W of road. 419 Comment
  SEINET3884403  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3371 Butte Above Lunt Rd., 0.4 mi. n. of Hwy. #70.; 0 Comment
  CDA13909  Allium jepsonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada; Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC98392  Allium jepsonii Dean Wm. Taylor 2004-6-17 19110 Butte Rocky Ridge, north side Feather River Canyon, Forest road 23N06B under the electrical transmission line. 899 Comment
  CHSC36952  Allium membranaceum R. A. Schlising 1980-6-6 3649 Butte N of Lake Oroville along Bald Rock Road, 0.8 mi s of jct with Oroville-Quincy Hwy at Brush Creek. 1024 Comment
  CAS-BOT-BC472968  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Along Ponderosa Way Comment
  CHSC36950  Allium peninsulare M. S. Taylor 1982-5-2 4391 Butte On n side of Hwy 70 at Pulga bridge, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC104829  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  SEINET10935987  Allophyllum divaricatum Lowell Ahart 1991-6-22 Ahart 6662 Butte Below the high water line of Lake Oroville, north of Springtown Road, Lake Oroville. Foothill Woodland (destroyed). T19N R5E SE/S2. 244 Comment
  CHSC46805  Allophyllum integrifolium R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4652 Butte N part of county, on Snow Mountain ridge. Around seep. 1889 Comment
  RSA173366  Allophyllum integrifolium H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  CAS-BOT-BC171270  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  SEINET10478495  Alnus tenuifolia Mary Susan Taylor 1975-8-31 Taylor 886 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  UC436297  Alopecurus aequalis E. B. Copeland August, 1930 Butte above Jonesville Jonesville 1650 Comment
  CAS-BOT-BC138170  Alopecurus aequalis var. aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET10790507  Alopecurus carolinianus Lowell Ahart 1987-5-10 Ahart 5606 Butte On dry bare reddish soil, in an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut about 12 miles south of Oroville. 30 Comment
  CHSC54352  Alopecurus saccatus Lowell Ahart 1991-5-16 6654 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC8196  Alopecurus saccatus D. McClain 1969-4-18 59 Butte 1/2 mi. n.w. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  UCD80510  Alopecurus saccatus CNPS SN Foothill Team 2005-4-12 SNFN 0077 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SEINET10511195  Alopecurus saccatus M. E. Banning 1969-4-18 Banning 76 Butte Table Mt., 1/2 mi. from Ore. City junction. 488 Comment
  CHSC28733  Amaranthus albus R. Schlising 1979-10-7 3496 Butte 0.9 mi s of Chico along Dayton Road. Comment
  CHSC36550  Amaranthus albus L. Ahart 1982-7-10 3671 Butte About 1/4 e of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  RSA726362  Amaranthus albus L. Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 Comment
  JEPS124124  Amaranthus blitoides Lowell Ahart 2015-10-9 20541 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  UC1586501  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte about 0.5 mi se intersection of Pennington Road and Rutherford Road (se of Gridley); Gray Lodge Waterfowl Mangement Area 21 Comment
  HSC102798  Amaranthus palmeri L. Ahart 2013-10-16 19111 Butte West side of Hwy. 99E, ~ 1.0 mi. E of Biggs, and ~ 20 yds. south of B Street. 30 Comment
  CHSC26661  Ambrosia psilostachya M. S. Taylor; H. Hayes 1977-8-19 1505 Butte In Campbell Slough, ca. 3 mi E of jct of Hwys 42 and 162, on N side of Hwy 162. 30 Comment
  JEPS104288  Ammannia coccinea Lowell Ahart 2003-6-23 10300 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  UC1563265  Ammannia coccinea Lowell Ahart 1990-10-5 6632 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
Read comments
1
  CAS-BOT-BC213948  Amsinckia A. A. Heller 1921-5-9 13551 Butte Field above Centerville Comment
  JEPS119611  Amsinckia eastwoodiae Lowell Ahart 2012-4-9 17821 Butte Along South Rim Trail, about 100 yards north of the homes, south part of Upper Bidwell Park, about 1/4 mile east of the power lines, about 1 1/4 miles (air) northeast of Chico. Comment
  CHSC31125  Amsinckia intermedia Howard Paul 1980-4-6 3 Butte Along the s rim of Butte Creek canyon, ca. 2.5 mi e of Chico, on the Skyway. 152 Comment
  CHSC90931  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  HSC96898  Amsinckia intermedia L. Ahart 2005-4-14 11700 Butte Gridley, N of Spruce St., E of the railroad tracks 28 Comment
  SEINET12479910  Amsinckia intermedia M. J. Williams 1967-4-15 s.n. Butte Near Pentz. 457 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
  SEINET12326796  Amsinckia intermedia M. S. Taylor, Tharp, K. 1983-1 5240 Butte along small road off Stillson Canyon Rd, ca 3 mi SSE of Chico 152 Comment
  RSA590209  Amsinckia menziesii Michael A. Vincent, Robert Rhode, Jim Snowden 1996-3-29 7243 Butte N Table Mt. W of Cherokee Rd, N of Oroville. Uphill from entrance on Cherokee Rd. Comment
  NY622094  Amsinckia verna A. A. Heller 1913-3-9 10683 Butte Hills 2 miles North of Oroville Comment
  CHSC101315  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC109061  Anagallis arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17920 Butte On the north side of the path, the path under the bridge, near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park. 80 Comment
  CHSC67154  Ancistrocarphus filagineus James D. Jokerst 1992-4-14 3345 Butte Stone Ridge Ranch survey for Heritage Partners and landowner Jon Bechtel. E of Cohasset Hwy. and Chico Municipal Airport. 91 Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  CAS-BOT-BC137802  Andropogon virginicus var. virginicus M. K. Bellue 1938-3-18 s.n. Butte Near Thermalito. Comment
  CHSC97535  Andropogon virginicus var. virginicus L. P. Janeway 2007-8-6 9154 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. 776 Comment
  UC1562474  Anemone drummondii Vernon Oswald and Lowell Ahart 1990-6-20 4307 Butte between Philbrook Reservoir and Carr Mine (s. side of Philbrook Creek, ca. 0.5 mi. w. of Butte-Plumas co. line) 1993 Comment
  CHSC44163  Anemone occidentalis V. Oswald; L. Ahart 1988-7-29 3644 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC45415  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservoir, about 2 1/4 miles north-west of Strawberry Valley. 1005 Comment
  POM197048  Angelica breweri H. F. Copeland 1928-8-18 1065 Butte Neighborhood of Jonesville 1524 Comment
  CDA4907  Anoda cristata var. digitata F. R. Platt 1957-9-27 324 -57 Butte Oroville. 0 Comment
  RSA518695  Antirrhinum leptaleum L. Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 0.25 mile south-west of the Enterprise Bridge across Lake Oroville. 267 Comment
  JEPS95606  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte 2 air miles N and 3 1/2 mi E of Forbestown (along S side of dirt road to Forbestown Reservoir, near Woodleaf Creek, 3/4 mi SW of Forbestown Reservoir Dam) 762 Comment
  JEPS107436  Aphanes occidentalis Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11660 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  JEPS116037  Aphanes occidentalis Lowell Ahart, John Dittes 2009-3-20 15504 Butte Open area along the 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 Ch 407 Comment
  CHSC54306  Aphyllon epigalium subsp. epigalium Vernon H. Oswald 1991-5-15 4596 Butte Lime Saddle Memorial Park, ca. 0.5 mi north of Parish Camp. 304 Comment
  CHSC102418  Apocynum cannabinum Lowell Ahart 2009-6-19 15925 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 209 Comment
  SEINET10536201  Aquilegia formosa Mary Susan Taylor 1978-7-21 Taylor 1802 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
  CHSC58257  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte Below the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  JEPS107278  Arabidopsis thaliana Lowell Ahart 2005-4-18 11742 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC55687  Arbutus menziesii Ben Cunningham 1991-4-20 Butte Ca. 1.3 mi S of Cresta Power House and 4 ft W of Highway 70, 51 mi S of Greenville. 609 Comment
  CAS-BOT-BC407715  Arceuthobium abietinum Lowell Ahart 1988-7-31 6166 Butte 1 air mile NE of Bald Mountain and 4.25 air miles NE of Stirling City 1676 Comment
  CAS-BOT-BC407716  Arceuthobium abietinum Lowell Ahart 1987-10-8 5911 Butte about 1.25 miles S of the Lost Creek Reservoir 1066 Comment
  CAS-BOT-BC27258  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Neal Road near the junctin of the first road E of the Bille Road, old sawmill site. East of Paradise. Comment
  CHSC67933  Arctostaphylos manzanita James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1684 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD80279  Arctostaphylos manzanita CNPS SN Foothill Team 2005-5-5 SNFN 0158 c Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  CAS-BOT-BC38827  Arctostaphylos manzanita subsp. manzanita Lewis S. Rose 1945-5-12 45033 Butte Richardson Springs 304 Comment
  CAS-BOT-BC38872  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-19 15500 Butte Neal Road 3 miles west of paradise near the upper limit of the Upper sonoran Life Zone. Comment
  CHSC21775  Arctostaphylos manzanita subsp. manzanita Robert A. Schlising 1974-9-17 3157 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  CHSC23443  Arctostaphylos manzanita subsp. roofii K. R. Stern 1974-6-30 5774 Butte Ca. 13 mi NE of Stirling City. 1950 Comment
  CAS-BOT-BC24298  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte Near Forest Ranch Comment
  CAS-BOT-BC38567  Arctostaphylos mewukka subsp. truei Edward Pittman 1965-10-16 224 Butte Between Bryant Ravine and Feather Falls. 609 Comment
  UCD51952  Arctostaphylos truei John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County, Transition Zone. 609 Comment
  UCD51954  Arctostaphylos truei John Thomas Howell 1975-6-15 51087 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD52620  Arctostaphylos viscida B. F. Smith 1971-7-20 95 Butte 3.2 miles north of Magalia, Butte County, California. 792 Comment
  CHSC88605  Arctostaphylos viscida subsp. pulchella H. Gray 2003-3-11 15 Butte Plumas National Forest. 731 Comment
  CAS-BOT-BC47370  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51104 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47375  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51088 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48296  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51083 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC32621  Arctostaphylos viscida subsp. viscida M. S. Taylor; L. Hanson 1981-3-31 3456 Butte N side of spur rd 1/4 mi W of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  UC1121413  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-7-20 117 Butte 2 1/2 mi w Nimshew; Chico Quadrangle Comment
  CHSC30068  Arenaria kingii var. glabrescens R. A. Schlising; R. Banchero 1980-7-31 3950 Butte Above Inskip and Snag Lake on north slopes of Snow Mountain. 1950 Comment
  CHSC34820  Arenaria macrophylla M. S. Taylor 1981-5-12 3690 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, 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
  RSA0118714  Aristida oligantha L. P. Janeway 2014-9-13 11579 Butte Sacramento Valley. Along the edges of Openshaw Road 0.8 km southeast of its junction with Hwy 149; between Dry Creek and Gold Run (Creek). Starting about here and continuing southeast for at least 1 km. 77 Comment
  CHSC37505  Aristida ternipes var. hamulosa J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1679 Butte Top of Table Mt. top of the bench that is ca 200 meters north of Phantom Falls (Wedge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  CAS-BOT-BC400431  Aristolochia californica John Thomas Howell 1959-9-20 34616 Butte Flats along Feather River about 1 mile west of Oroville 45 Comment
  CHSC4665  Aristolochia californica R. Carter 1966-4-11 336 Butte Found ca. 1 mi. E of Bidwell Bar along S side of R.R. tracks, 300 yds. W of R.R. bridge over S Fork. 152 Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  UC1562316  Arnica Vernon Oswald and Lowell Ahart 1990-6-27 4333 Butte 1.4 mi nw of, between Four Trees and Coyote Gap Four Trees Rd. 1475 Comment
  CAS-BOT-BC82110  Arnica chamissonis A. A. Heller 1928-7-25 14701 Butte Butte Creek House Comment
  CHSC36393  Arnica dealbata Kirsten Tarp 1981-8-4 68 Butte Scotts John Creek, ca. 29 mi ne of Chico. 1828 Comment
  CHSC46233  Arnica dealbata Pauleen Broyles 1987-7-5 1071 A Butte Ca 7 km n of Inskip and .4 km s of Bull Hill Road where it crosses Coon Creek. On n side of Coon Creek. 1530 Comment
  CAS-BOT-BC82413  Arnica discoidea H. F. Copeland 1920-8-26 184 Butte Jonesville Woods 1219 Comment
  POM195762  Arnica discoidea E. B. Copeland 1929-7-23 s.n. Butte Jonesville. 1600 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
  JEPS120016  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC42753  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CAS-BOT-BC400634  Asarum hartwegii A. A. Heller 1915-4-12 11809 Butte Near Cohasset Comment
  CAS-BOT-BC400640  Asarum hartwegii Clarence R. Quick 1962-6-16 62 -36 Butte SW of road junction of Big Bend-Red Mountain road Comment
  SEINET10573068 Image available Asarum hartwegii A. Arthur Heller 1915-4-12 Heller 11809 Butte Near Cohasset, near the upper limit of the digger pine belt, on cool, shaded stream banks under trees of Quercus Kelloggii. Comment
  CHSC117  Asclepias cordifolia M. Harless 1930-5-18 Butte Paradise. 548 Comment
  CHSC37272  Asclepias cordifolia L. Ahart 1982-6-15 3580 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC31548  Asclepias eriocarpa L. Ahart 1975-6-19 789 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC6561  Asclepias fascicularis R. Carter 1966-7-6 464 Butte Found ca. 7 mi. E of Oroville on NE corner of intersection of Miners Ranch Rd. and Mt. Ida Rd. 243 Comment
  SEINET12318329  Asclepias fascicularis M. S. Taylor 1975-1 791 Butte ca 50yds W of Mud Creek, ca 0.5mi N of Richardson Springs Hotel, ca 7 mi NE of Chico 244 Comment
  CHSC38265  Asclepias speciosa Vernon Oswald. 1983-6-14 682 Butte Upper Bidwell Park, Chico, 100 ft. e of the turn-around at the e end of Upper Park Rd. 207 Comment
  CAS-BOT-BC65917  Aspidotis densa John Thomas Howell 1955-6-14 30464 Butte Magalia 731 Comment
  CHSC60939  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  HSC66087  Aspidotis densa M. S. Taylor 1980-3-8 2373 Butte 100 ft. SW of Pulga bridge over Hwy. 70 28 mi. NE of Oroville 488 Comment
  SEINET10474429  Aster chilensis var. medius Lowell Ahart 1985-10-8 Ahart 5195 Butte On the bottom and sides 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. Comment
  CHSC43599  Aster radulinus Vernon H. Oswald 1986-8-7 2276 Butte Northeast edge of Paradise Lake, ca. 1 mi N of the picnic area. 780 Comment
  CHSC101704  Astragalus gambelianus Lowell Ahart 2009-4-26 15631 Butte In the middle and on the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC109163  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC40307  Astragalus gambelianus Ahart; Jokerst 1985-5-10 4962 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  UCD80287  Astragalus gambelianus CNPS SN Foothill Team 2006-3-22 SNNR 1175 Butte CDPR Oroville State Recreation Area. 295 Comment
  CAS-BOT-BC192799  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CAS-BOT-BC192801  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Summit of Table Mountain 304 Comment
  CHSC31961  Astragalus pauperculus J. D. Jokerst 1979-5-2 1219 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  SEINET10452231  Astragalus pauperculus Mary Susan Taylor 1980-3-15 Taylor 2380 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
  SEINET10452232  Astragalus pauperculus Mary Susan Taylor 1984-4-6 Taylor 5410 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  RSA0003125  Astragalus tener var. bruceae C. C. Bruce 1898-03 2430 Butte Plains [no specific locality given] Comment
  CHSC34238  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-28 3568 E Butte On Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC44481  Athysanus pusillus Lowell Ahart 1988-3-28 5948 Butte About 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  SFV1397  Athysanus pusillus M. L. Vincent 1961-3-28 36 Butte Sierra Nevada Skyway on road from Paradise to Chico; 2 miles west of Paradise. 300 Comment
  CHSC46866  Atriplex argentea var. mohavensis Vernon Oswald 1989-9-6 3982 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.9 mi w of Pennington Rd. 19 Comment
  CAS-BOT-BC168562  Atriplex cordulata Lowell Ahart 1982-10-11 3861 Butte About 1/10 mile south-east of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC61029  Atriplex cordulata Vernon H. Oswald 1993-7-29 5734 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W sid o f a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  CHSC34024  Atriplex lentiformis L. Ahart 1981-7-26 3008 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking areas, ca. 1/2 mi ne of the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC146179  Avena barbata Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  CHSC30283  Avena barbata M. S. Taylor 1980-3-1 2327 Butte West end of county dump, on s boundry, on n side of Neal Rd., ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CAS-BOT-BC66236  Azolla filiculoides Lowell Ahart 1985-3-24 4850 Butte south of Highway 70, at the intersection of Highway 70 and 191 100 Comment
  CHSC34148  Azolla filiculoides L. Ahart 1981-9-27 3214 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo R, ca. 4 mi ne of Palermo. 80 Comment
  UC1562367  Azolla filiculoides Lowell Ahart 1990-5-20 6473 Butte ca. 4 1/2 mi sw of Oroville (ca. 1/4 mi s of Feather River, ca. 4/10 mi w of Pacific Heights Rd.) 30 Comment
  CHSC59166  Azolla microphylla Vernon H. Oswald 1992-9-21 5218 Butte SE corner of Llano Seco, in a ditch crossing Seven Mile Lane ca. 0.25 mi N of Nelson West Rd. 30 Comment
  CAS-BOT-BC98621  Baccharis pilularis unspecified 1929-11-1 s.n. Butte Cultivated at Chico U.S. Experimental Station Comment
  SEINET10474453  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1979-3-20 Taylor 1961 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-BC98186  Baccharis salicifolia Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  CHSC4672  Balsamorhiza deltoidea R. Carter 1966-4-11 335 Butte Found ca. 1 mi E of Bidwell Bar along RR tracks, just W of RR bridge over S Fork. 152 Comment
  CHSC33725  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-10 3525 Butte S side of private rd, ca. 1/8 mi e of its jct with Ponderosa Way, ca. 4 mi n of Jarbo Gap on Hwy 70. 914 Comment
  CHSC112540  Bergia texana B. Castro; Andy Rogers 2014-7-15 2032 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 0.4 mi downstream (W) of its crossing under the Cohasset Hwy bridge. In central channel excavated in a 2010 sediment removal project. 54 Comment
  CHSC65198  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch, about 1-1/2 miles north and 3/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC113131  Bidens frondosa Lowell 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. 245 Comment
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 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
  CAS-BOT-BC412958  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  NY31003  Blennosperma californicum C. B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 0.5 mile southeast of Butte Creek on Chico-Oroville road 57.9 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
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  CHSC38408  Boechera breweri subsp. shastaensis Vernon Oswald 1983-3-13 159 Butte Upper Bidwell Park, Chico, 20 ft s of Upper Park Rd. e of Devil's Kitchen (2.2 mi e of the power lines). On outcrops overlooking Chico Creek canyon. 222 Comment
  POM253279  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  RSA0028756  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  CHSC66455  Bolboschoenus glaucus Vernon H. Oswald 1996-6-10 7757 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  UC1100854  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12733 Butte nw Pennington; Gray Lodge Game Refuge Comment
  UC1751221  Botrychium minganense Timothy B. Devine 1985-7-7 846 a Butte 2/3 mi NW of Jonesville (beside Willow Creek, about 1/4 mi N of jct with road to Colby Mountain Lookout) 1524 Comment
  UC1751224  Botrychium minganense Timothy B. Devine 1986-8-10 896 Butte beside Willow Creek 1/2 mi N of jct with Colby Mt. Road 1554 Comment
  CHSC69114  Boykinia major Lowell Ahart 1997-8-1 7796 Butte At the bottom of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  CHSC71652  Boykinia major Vernon H. Oswald; Lowell Ahart 1998-8-11 9463 Butte USFS 25N95 to Upper Wildcat Creek 0.7 mi north of Four Trees-Coyote Gap Rd. 1408 Comment
  CAS-BOT-BC145681  Brachypodium distachyon John Thomas Howell 1959-9-20 34691 Butte Sierra Nevada. 7 miles northeast of Oroville on Feather River Highway. Comment
  CHSC110143  Brachypodium distachyon L. P. Janeway 2012-5-2 10811 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope +-overlooking Bear Hole on Big Chico Creek, between Middle Trail and Upper Trail. 166 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
  HSC102687  Brachypodium distachyon J. P. Smith 2013-5-5 13701 Butte Just west of the junction of Pentz Road with Durham-Pentz Road. 201 Comment
  SEINET10448435  Brassica geniculata Mary Susan Taylor 1975-10-29 Taylor 974 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
  CHSC39608  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte In a field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut. 40 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
  CAS-BOT-BC145530  Briza minor A. A. Heller 1913-5-25 10762 Butte Near Pents. 152 Comment
  SEINET10896168  Brodiaea Carl B. Wolf 1937-6-12 Wolfe 2849 Butte Sierra Nevada Foothills, 2 1/2 miles SE of Oroville on road to Wyandotte. 300 feet. Upper Sonoran:-Quercus douglas & P. sabiniana. Red clay, dry open slopes, sun. Comment
  SEINET10899500  Brodiaea californica Mrs. R. M. Austin Austin 45 Butte Iron Canyon Comment
  CAS-BOT-BC482211  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  SEINET10938217  Brodiaea laxa Mary Susan Taylor 1973-1 Taylor 56 A Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC2093  Brodiaea minor E. R. Washburn 1930-4-1 Butte Comment
  CHSC78345  Brodiaea minor Lowell Ahart 2000-6-17 8480 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  HSC32394  Brodiaea minor Gary S. Lester 1974-4-20 99 Butte 1 mi. E of Hwy. 99, Skyway Blvd. 61 Comment
  JEPS93813  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte about 1 1/2 mi n and 2 3/4 mi e of Honcut (on the se side of North Honcut Creek, Peter Ahart Ranch, about 12 mi se of Oroville); North Honcut Creek, Peter Ahart Ranch 54 Comment
  SEINET10507832  Bromus carinatus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4706 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC149547  Bromus carinatus var. carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile southwest of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CAS-BOT-BC156075  Bromus diandrus John Thomas Howell 1967-6-22 42627 Butte Sierra Nevada. Magalia. 701 Comment
  UCD59475  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles N of Oroville. Comment
  CHSC31946  Bromus hordeaceus J. D. Jokerst 1979-4-20 1211 Butte Top of North Table Mt., ca. .75 mi N of Cherokee Rd. 396 Comment
  RSA700239  Bromus inermis L. Ahart 2004-7-23 11307 Butte on the west side of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1508 Comment
  CAS-BOT-BC162457  Bromus laevipes John Thomas Howell 1967-6-22 42621 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC102791  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 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
  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
  CHSC87913  Bromus laevipes Lowell Ahart 2004-5-27 10958 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  SEINET10520260  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CAS-BOT-BC162361  Bromus madritensis Lowell Ahart 1980-8-2 2522 Butte Humboldt Peak. 2300 Comment
  CHSC31707  Bromus madritensis subsp. rubens L. Ahart 1970-4-20 44 Butte On creek bank. Peter Ahart Ranch, Honcut. 45 Comment
  CDA31606  Bromus suksdorfii L. Ahart 2004-8-2 11333 Butte On both sides of the dirt County road, between Sky High Mine and Dresser Camp about 2 mile (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows. Comment
  CAS-BOT-BC161503  Bromus tectorum Javier Penalosa 1962-6-18 2463 Butte Near confluence of French and Peavine Creeks. 609 Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  CHSC96959  Bulbostylis capillaris Lowell Ahart 2007-6-12 14073 Butte Along swales, in a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville. 1009 Comment
  CHSC101090  Calandrinia ciliata Lowell Ahart; John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC23133  Calandrinia ciliata var. menziesii M. S. Taylor 1976-2-12 991 Butte Abundant along roadside, ca. 500 ft n of Big Chico Creek, vicinity of Salmon Hole, Upper Bidwell Park, Chico. 243 Comment
  CDA35328  Callitriche heterophylla subsp. bolanderi T. C. Fuller 1962-5-17 8720 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  CHSC38252  Calocedrus decurrens Vernon Oswald 1982-12-30 40 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 195 Comment
  CHSC77412  Calocedrus decurrens Laura Bogni 1997-3-25 30 Butte West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. Magalia grove. 701 Comment
  SEINET10531067  Calocedrus decurrens Mary Susan Taylor 1980-5-27 Taylor 2698 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC429160  Calochortus albus Mrs. R. M. Austin 1890-1 30 Butte Butte Creek Comment
  HSC23375  Calochortus albus R. N. Bowman 1971-4-18 2 Butte W side of Cherokee Rd., 7.3 mi. S of Hwy. 70 183 Comment
  UC175308  Calochortus coeruleus A. A. Heller 1913-6-7 10812 Butte near Stirling 1074 Comment
  CAS-BOT-BC487814  Calochortus coeruleus A. A. Heller 1928-6-20 s.n. Butte In the yellow forest at Butte Meadows Comment
  CHSC4674  Calochortus luteus R. Carter 1966-4-30 386 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  SEINET7072747  Calochortus luteus A. G. Vestal 1963-5-9 s.n. Butte About 14.2 miles southeast of Chico on Route 99, then south on Shippee Road. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 612709mE, 4380037mN. Coordinate datum: NAD 27.) Comment
  UC203869  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte 8 mi n Oroville Comment
  SEINET12053936  Calochortus luteus D. A. Tillotson 1890-1 s.n. Butte no further locality Comment
  CHSC29101  Calochortus monophyllus M. S. Taylor; J. D. Jokerst 1980-4-18 2511 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC84919  Calochortus monophyllus Janice Morris 1995-4-24 91 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  CAS-BOT-BC492600  Calochortus monophyllus A. A. Heller 1940-4-29 15565 Butte On the Clark Road, 2 miles below Paradise, Comment
  CHSC44529  Calochortus tolmiei Lowell Ahart 1988-3-27 5941 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 350 Comment
  CAS-BOT-BC494319  Calochortus tolmiei A. A. Heller 1913-6-7 10812 Butte near Stirling 1072 Comment
  RSA394720  Calochortus tolmiei Carl B. Wolf 1937-5-17 8719 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  SEINET12050638  Calochortus tolmiei Unknown 1981-1 6 Butte Paradise, ca 0.25 mi E of Pearson & Pentz intersection on W side of Feather River Canyon (W branch) 579 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
  HSC103922  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  CAS-BOT-BC106095  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte Near the Chico airport Comment
  CAS-BOT-BC106096  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CAS-BOT-BC106122  Calycadenia oppositifolia Lowell Ahart 1988-7-29 6084 Butte North of Swedes Flat Road, about 1 mile east of Oroville Bangor Highway, about 5 miles north of Bangor 304 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
  CHSC91459  Calycadenia oppositifolia Lowell Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  JEPS98426  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  UC1876183  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  UC194208  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Rd. 335 Comment
  UC1971683  Calycadenia oppositifolia 1978-7-7 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devils Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave, 100 yds NW of road 244 Comment
  CHSC59105  Calycadenia spicata L. P. Janeway; B. Castro, R. A. Schlising 1992-5-17 4188 Butte Unnamed canyon on the southeast side of Neal Road opposite the upper part of the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99. 76 Comment
  CHSC30945  Calycadenia truncata L. Ahart 1980-7-4 2449 Butte On a steep hillside ca. 1/2 mi SE of Hurleton. 600 Comment
  CAS-BOT-BC275392  Calycadenia truncata var. truncata Lowell Ahart 1988-6-29 6085 Butte N of Swedes Flat Road, about 1 mile E of Oroville Bangor Highway, about 5 miles N of Bangor 304 Comment
  POM370298  Calycanthus occidentalis M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  UC203617  Calyptridium monospermum A. A. Heller 1914-6-24 11512 Butte w side of Sierra Nevada at West Branch; Sierra Nevada 1036 Comment
  CHSC95113  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. 860 Comment
  CHSC38399  Calystegia occidentalis Vernon Oswald 1983-5-21 513 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  RSA718787  Campanula prenanthoides L. P. Janeway 2006-6-25 8703 Butte Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC177596  Campanula prenanthoides H. M. Hall July 1914 9797 Butte Butte Meadows 1310 Comment
  UC454113  Campanula prenanthoides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC486  Capsella bursa-pastoris V. Holt 1935-3-20 Butte Chico. 57 Comment
  CHSC65684  Capsella bursa-pastoris Vernon H. Oswald 1996-3-22 7258 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CHSC34525  Cardamine californica var. californica R. E. Preston 1982-1-31 158 Butte S rim of Chico Creek canyon above Salmon Hole, ca. 5 1/2 mi ne of Chico. 304 Comment
  RSA767798  Cardamine oligosperma L. Ahart 2010-2-13 16566 Butte Parking area, Peter Ahart Ranch, abut 1.5 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 34 Comment
  RSA769604  Cardamine oligosperma L. Ahart, John Dittes 2009-3-20 1505 Butte Open area along 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
  JEPS115289  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley 27 Comment
  JEPS117247  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, 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
  CHSC104809  Carex Lowell Ahart 2010-4-23 16579 Butte Lawn of home #1082, near the middle of and north side of E7th Street, between Sycamore Street and Linden Street, Chico. 63 Comment
  CAS-BOT-BC18211  Carex Lowell Ahart 1989-5-28 6283 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1.5 mile west of Rocky Point. 335 Comment
  CAS-BOT-BC32414  Carex abrupta Amos Arthur Heller 1913-6-7 10820 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CAS-BOT-BC17812  Carex amplifolia Lowell Ahart 1983-9-17 4439 Butte About 0.25 mile southeast of Stirling City. 1100 Comment
  JEPS94568  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC11935  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CAS-BOT-BC19103  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  SEINET7551515 Image available Carex barbarae Unknown 2004-8-7 8242 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; about 12 m north of Big Chico Creek and about 7 m higher; between Upper Park Road and Yahi Trail; between Day Camp and the Power Lines. Richardson Springs 7.5' quad. 93 Comment
  CHSC52253  Carex bolanderi L. P. Janeway; R. A. Schlising 1988-7-16 3008 Butte Along Willow Creek 1/2 mi NW of Jonesville. 1508 Comment
  CHSC54113  Carex bolanderi Vernon H. Oswald; Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). On the edge of Palermo Canal. 170 Comment
  UC1609342  Carex bolanderi Lowell Ahart 1993-6-26 7008 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CHSC48540  Carex brainerdii L. P. Janeway; R. A. Schlising 1988-4-24 2640 Butte Along Humboldt Rd 1.9 mi from Hwy 32; Carpenter Ridge. 1371 Comment
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  CAS-BOT-BC422334  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-knothing Creek, 2.1 air km S of top of Quartz Hill, northern Sierra Nevada Highlands (n SNH) 1000 Comment
  CHSC111018  Carex cyrtostachya L. P. Janeway; Lowell Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. Small seepage/drainage (now dry) on the west edge of a low broad granite slab, 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CHSC61509  Carex cyrtostachya Lowell Ahart 1993-7-6 7052 Butte On the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC34949  Carex densa Lowell Ahart 1980-5-17 2309 Butte 0.5 mile SE of Hurleton. 600 Comment
  CHSC52856  Carex densa L. P. Janeway 1987-6-8 2181 Butte Seep along dirt road 3.0 mi south of Big Bar Mtn. 1021 Comment
  CHSC69651  Carex densa James D. Jokerst 1988-4-21 2999 Butte Parrot (Blakely-Swartz) Ranch S of Chico. Comment
  SEINET7483993 Image available Carex echinata E. B. Copeland 1929-1 610 Butte Jonesville. 1500 Comment
  CHSC50350  Carex echinata subsp. echinata Vernon Oswald 1990-5-14 4209 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC52858  Carex echinata subsp. echinata L. P. Janeway 1988-7-2 2944 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC104835  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 406 Comment
  SEINET7558570 Image available Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley, at head of Concow Creek. Pulga 7.5' quad. 1116 Comment
  CAS-BOT-BC21237  Carex fracta Clarence Roy Quick 1963-7-16 63 -43 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  SEINET7468094 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville 1720 Comment
  CHSC100876  Carex geyeri L. P. Janeway; Linus Gog 2008-7-18 9435 Butte High Cascade Range. Along Humbug Summit Road, above the Cornelia Lott Sank memorial Spring (which feeds West Branch Feather River). Comment
  SEINET12398383  Carex globosa J. T. Howell, G. H. True 1969-4-9 45490 Butte Sierra Nevada Mountains; Magalia 701 Comment
  CHSC43898  Carex heteroneura var. heteroneura L. P. Janeway; C. A. Janeway 1986-8-31 1806 Butte Along Scotts John Cr at crossing of Jonesville-to-Humbug Summit Rd (26N27), 3 mi from Humboldt Rd. 1737 Comment
  CHSC52869  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3031 Butte Large mdw at head'waters' of Willow Cr. 1935 Comment
  JEPS121935  Carex integra Lowell Ahart 2014-7-10 19635 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  RSA0119041  Carex integra Lowell Ahart 2014-7-7 19592 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  SEINET10709999  Carex integra A. Arthur Heller 1928-6-16 Heller 14613 Butte Damp, grassy places in the Yellow Pine Forest at Butte Meadows. Comment
  CHSC101996  Carex inversa L. P. Janeway 2009-9-22 9954 Butte Sacramento Valley. Oroville: west side of Third Avenue between Montgomery Street and Safford Street. In narrow parkway strip between sidewalk and street. 49 Comment
  CHSC52917  Carex jonesii L. P. Janeway; R. A. Schlising 1988-7-22 3074 Butte Seep just above the High Lakes Road 2.4 mi W of the pass; canyon of Philbrook Creek. 1905 Comment
  JEPS121976  Carex laeviculmis Lowell Ahart 2014-7-10 19608 Butte About 100 yards east of Memorial Spring and the Skyway, about a mile southwest of the intersection of Humbug Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  JEPS87493  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte about 1/4 mi w Lost Creek Reservoir (on the s side of the dirt road) 1036 Comment
  JEPS117593  Carex luzulina var. ablata Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  CHSC55561  Carex mariposana L. P. Janeway 1988-6-25 2866 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from Skyway. 1554 Comment
  CAS-BOT-BC32200  Carex multicaulis Lowell Ahart 1982-6-4 3537 Butte Ca 8 mi E of Feather Falls, 1.5 mi E of Camp 18. 1000 Comment
  CHSC103223  Carex multicaulis L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9979 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  CHSC3763  Carex multicaulis R. L. Adams 1964-4-12 87 Butte 1/2 mi. W. Ten Mile House, Highway 32 on N. side road. 8 mi. from Chico. Comment
  CHSC52245  Carex nudata L. P. Janeway 1987-6-20 2274 Butte Along Fall River near the road to Cascade 3.0 mi north of the Feather Falls-Lumkin Ridge Rd. 1013 Comment
  CHSC88364  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  CHSC102178  Carex praegracilis Lowell Ahart 2009-5-30 15789 Butte On dry soil, forming large dense colonies, meadow, about 50 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
  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
  CHSC87219  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale. 32 Comment
  JEPS106104  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale 32 Comment
  CHSC105521  Carex raynoldsii Lowell 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 (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC48542  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-16 3009 Butte Along Colby Mountain Rd, 1/4 mi N of Jonesville. 1554 Comment
  UC1108038  Carex serratodens H. F. Copeland 1932-7-24 Butte by small stream running from w into Butte Creek Meadows Comment
  SEINET4287828  Carex subfusca L. Janeway, Gog, L 2008-1 3192 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  RSA769593  Carex utriculata L. Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC33772  Carex vernacula J. D. Jokerst; L. Ahart, M. S. Taylor, H. Wurlitzer 1981-7-31 1040 Butte Top of Humboldt Peak ca 50 meters N of summit, northern-most portion of Butte County. Comment
  JEPS114822  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 243 Comment
  SEINET13723638  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte northern highlands, Coutolenc Road 0.1 mi north of Skyway Road 720 Comment
  UC2026868  Carpenteria californica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18201 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC109183  Castanea dentata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road,west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC114975  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 A Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  CHSC114978  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20032 Butte Road cut, on the west side of Rim Road, about 1/4 mile north of Jrbo Gap, about 15 miles (air) north of Oroville. 730 Comment
  CHSC115315  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20051 Butte On the south side of the road to the Forbestown Reservoir, about 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 669 Comment
  CHSC115318  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20053 Butte On the south side of the road to the Forbestown Reservoir, about 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 669 Comment
  JEPS124198  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20033 Butte About 2 1/2 miles (air) north of Jarbo Gap, about 17 miles (air) North of Oroville Comment
  JEPS3294  Castilleja applegatei subsp. pinetorum L. Heckard and J. R. Sweeney 1953-4-27 345 a Butte 23 mi ne Oroville (Feather River canyon highway) 548 Comment
  SD7119  Castilleja applegatei subsp. pinetorum Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  CAS-BOT-BC255461  Castilleja applegatei var. pinetorum A. A. Heller 1914-8-6 11646 Butte Chico Meadows 1219 Comment
  CHSC118060  Castilleja attenuata Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 232 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC98945  Castilleja attenuata Lowell Ahart 2008-5-8 14727 Butte Below the high water line of Lake Oroville, about 50 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
  CHSC115345  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-13 20031 Butte On the east side of Lone Tree Road, about 1/4 mile north of Wyman Ravine, about 6 1/2 miles (air) south of Oroville. 32 Comment
  JEPS105936  Castilleja campestris subsp. campestris Lowell Ahart 2004-4-4 10724 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  JEPS124207  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-11 20030 Butte About 1 1/2 miles northeast of Honcut, about 1/2 miles east of Parlemo Honcut Highway, about 12 miles (air) south of Oroville. Comment
  CHSC44430  Castilleja lacera Lowell Ahart 1988-6-15 6040 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  UC176080  Castilleja pruinosa A. A. Heller 1913-6-7 10808 Butte near Stirling 1074 Comment
  UCR231508  Ceanothus Anna M. Hurlbutt 2009-8-7 025 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  LA41969  Ceanothus cordulatus E. B. Copeland; 1929-7-14 382 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC48809  Ceanothus cuneatus Lowell Ahart 1980-3-26 2061 Butte Near Hurleton 600 Comment
  CHSC1502  Ceanothus cuneatus M. Roberson 1956-4-9 Butte SW. of Paradise, along Skyway. 426 Comment
  CHSC96968  Ceanothus diversifolius Lowell Ahart; Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  SD2946  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville, in edge of fir and pine woods. 1650 Comment
  UCD111992  Ceanothus integerrimus Ray Prag 1970-7-2 s.n. Butte Highway 70, at Jarboe Gap. 701 Comment
  RSA518960  Ceanothus integerrimus J. T. Howell 1975-6-15 51116 Butte Skyway and Montana Drive, Paradise. 610 Comment
  SEINET12211315  Ceanothus integerrimus S. A. Carter 1988-1 s.n. Butte S. side of Little Butte Creek, ca 8.8 mi ese of Chico, ca 75 ft W of Honey Run Road 160 Comment
  SEINET5339315  Ceanothus integerrimus M. J. Williams, W. Roderick 1984-5-25 84- 22 -3 Butte Magalia, near Skyline road to Paradise. 168 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
  JEPS123821  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 2015-4-18 20054 Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  RSA25681  Ceanothus jepsonii Carl B. Wolf 1941-7-23 11048 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CAS-BOT-BC51147  Ceanothus lemmonii John Thomas Howell 1975-6-15 51115 Butte Paradise, Skyway near Billie Road 609 Comment
  CHSC1513  Ceanothus lemmonii 1954-4-1 Butte Humbug road, 1/2 mi. below Nimshew. 762 Comment
  UCD112164  Ceanothus lemmonii L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC52013  Ceanothus prostratus John Thomas Howell 1962-6-16 37582 Butte Pentz road 2 mi. S. of Magalia 609 Comment
  RSA399005  Ceanothus prostratus A. Davidson 1928-7-1 s.n. Butte [Unspecifed; Butte-Plumas counties] Comment
  UC1071460  Ceanothus velutinus C. G. Albertus 1933-7-25 49 Butte just s Thompson's; Chico Quadrangle Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  CHSC90928  Centaurea solstitialis Lowell Ahart 2005-4-14 11722 Butte North side of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC196284  Centaurea solstitialis A. A. Heller 1914-8-12 1753 Butte about Chico; Sacramento Valley Comment
  CHSC115798  Centaurea stoebe subsp. micranthos Lowell Ahart 2015-9-8 20533 Butte On the sides of a dirt road, about one mile northeast of the bridge across Fall River, about 8 miles (air) northeast of the school in Feather Falls. 1191 Comment
  CHSC8752  Centaurium tenuiflorum S. Chulasmai 1966-5-20 37 Butte Helocrine Spring. Upper Bidwell Park, roadside. Comment
  SFV3982  Centromadia pungens M. L. Vincent 1960-9-8 53 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  CHSC68909  Cephalanthera austiniae Lowell Ahart 1997-7-11 7747 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CAS-BOT-BC222895  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC222896  Cephalanthus occidentalis John Thomas Howell 1961-9-22 36764 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CHSC10568  Cephalanthus occidentalis var. californicus Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC64040  Cerastium fontanum subsp. vulgare S. C. Morey 1983-8-4 722 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC90926  Cerastium glomeratum Lowell Ahart 2005-4-14 11715 A Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CAS-BOT-BC388265  Cerastium glomeratum Lowell Ahart 1980-5-17 2285 Butte 1/2 mile south-east of Hurleton 600 Comment
  CAS-BOT-BC388266  Cerastium glomeratum Lowell Ahart 1980-5-4 2181 Butte Thermalito 65 Comment
  JEPS122198  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte 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. Comment
  SEINET10932393  Ceratophyllum demersum Mary Susan Taylor 1975-10-4 Taylor 960 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC99666  Cercis occidentalis H. Koeth 2007-4-26 Butte Chico State Campus. At the west entrance of Holt Hall, Planter box landscape. UTM 10 598699E 437946N Comment
  UC204723  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte near Forest Ranch; West Slope of the Sierra Comment
  UC884528  Chamaesaracha nana A. A. Heller 1917-7-29 12866 Butte summit above Jonesville 2133 Comment
  JEPS83932  Chamaesyce hooveri R. D. Stone 1986-7-15 750 Butte 10 mi se Chico (0.1 mi e of Hwy 99, 0.5 mi se of intersection with Pentz Rd); Esquon Lake 54 Comment
  CHSC113128  Chamaesyce maculata Lowell Ahart 2013-11-18 19276 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC47429  Chamaesyce maculata Lowell Ahart 1984-8-19 4784 Butte North of the state borrow area, west on Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC75997  Chamaesyce maculata Lowell Ahart; Vernon H. Oswald 1999-8-13 8160 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
  CDA35250  Chamaesyce ocellata T. C. Fuller 1962-8-6 9332 Butte North of Hwy 99E to Chico, 1.2 miles south of Tehama/Butte County line. 0 Comment
  CHSC75965  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8161 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
  UC1609291  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte 6 air mi ne Feather Falls (w of the bridge, along Fall River) 1036 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
  CHSC25279  Cheilanthes cooperae K. R. Stern 1977-1-15 Butte Along branch of Feather River, n of Limesaddle. Comment
  SEINET10529873  Cheilanthes cooperae Mary Susan Taylor 1980-4-16 Taylor 2484 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  SEINET10529935  Cheilanthes siliquosa Mary Susan Taylor 1981-3-18 Taylor 3417 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  SEINET10479003  Chenopodium album Mary Susan Taylor 1980-7-6 Taylor 3062 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET10904479  Chenopodium ambrosioides Mary Susan Taylor 1979-10-13 Taylor 2248 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CDA13235  Chenopodium botrys G. F. Hrusa, T. D. Wilfred 1996-7-8 13082 Butte Plumas National Forest; Old gun range on Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC112721  Chenopodium rubrum var. humile Lowell Ahart 2013-10-26 19212 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  SBBG28480  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  UC474264  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte woods near Jones Creek (Jonesville); Jonesville Comment
  CHSC46394  Chimaphila umbellata Lowell Ahart 1989-5-29 6310 Butte On the south side of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2-1/2 miles north-east of Forbestown. 822 Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  RSA695408  Chondrilla juncea L. Ahart 2003-6-30 10331 Butte Near water pipe where it comes out of the mountain, on north side of the Ponderosa Reservoir, about 2 air miles north of Forbestown. 481 Comment
  CHSC111342  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-5-2 17953 Butte In the old fire guard, along the fence, about 50 yards northeast of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 93 Comment
  CHSC45362  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1987-4-14 2323 Butte Hwy 32 between Chico and Forest Ranch 0.8 mi s of Crown Point Rd. 524 Comment
  CHSC21786  Chorizanthe stellulata Robert A. Schlising 1974-5-25 3133 Butte 9.9 mi NE jct Hwy 99 and Hwy 32 in Chico, along Hwy 32. Comment
  CHSC39301  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, California. Found growing on dry red rocky soil 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, California. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CHSC20896  Circaea alpina subsp. pacifica M. S. Taylor 1975-8-31 880 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC44043  Circaea alpina subsp. pacifica L. P. Janeway 1987-6-26 2304 Butte Edge of pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  CHSC47051  Circaea alpina subsp. pacifica R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4650 Butte NE part of county on Snow Mountain ridge. At roadside. 1950 Comment
  UCD103971  Circaea alpina subsp. pacifica R. Banchero; R. Schlising 1980-7-11 3876 Butte NE part of county. Old site of Merrimac. 1203 Comment
  UC426983  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 488 Butte Jonesville 1600 Comment
  SEINET10474562  Cirsium pastoris Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4242 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC285725  Cirsium vulgare Lowell Ahart 1981-7-26 3010 Butte Gray Lodge, southwest of Gridley 35 Comment
  CHSC99641  Clarkia arcuata H. Koeth 2007-5-6 Butte Table Mountain, Oroville. UTM 10 624239E 4387760N. 451 Comment
  HSC32601  Clarkia arcuata Kitsy Kelly 1974-4-20 24 Butte Table Mtn. Volcanic area Comment
  CAS-BOT-BC163541  Clarkia arcuata E. B. Copeland 1899-4-22 s.n. Butte Near Chico Comment
  CHSC89904  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  CHSC96800  Clarkia concinna subsp. concinna Lowell Ahart 2007-5-22 13913 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CAS-BOT-BC164524  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-1 63 -47 Butte Jarbo Pass, 6.2 miles northeast Comment
  CHSC88644  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-18 352 Butte Plumas National Forest. Mill Creek Cal Trans Station. 426 Comment
  JEPS14931  Clarkia gracilis subsp. albicaulis Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4726 Butte 3 1/2 mi below and ssw Nimshew (along Humbug Road, on road to Centerville); Butte Creek 518 Comment
  HSC95510  Clarkia mildrediae L. Ahart 1997-7-11 7743 Butte Southeast of Cold Creek, 2 air mi. southwest of Bald Mountain, ~ 9 mi. by road from Stirling City, or ~ 2 air mi. northeast of Stirling City 1220 Comment
  CAS-BOT-BC163260  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-1 4413 Butte Along French Creek Road 4.1 mi from Stanwood Saddle and Oroville-Quincy Hwy. 801 Comment
  CHSC46132  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1984-7-19 4745 Butte Along a logging road, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  HSC38051  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2457 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CAS-BOT-BC172533  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles S.E. of Oroville, Hy. 24. Comment
  CAS-BOT-BC163649  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardsonn Springs 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
  UC246743  Clarkia purpurea subsp. quadrivulnera H. E. Brown Apr 15 1897-Apr 30 1897 212 Butte near Clear Creek 53 Comment
  UC569733  Clarkia purpurea subsp. quadrivulnera F. W. Embree 1934-4-24 43 Butte 4 1/2 mi n and 1 1/2 mi e Biggs; Marysville Quadrangle 38 Comment
  CHSC56557  Clarkia purpurea subsp. viminea L. P. Janeway 1991-6-1 3981 Butte Road-shoulder/top-of-fill of Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. 512 Comment
  CHSC30066  Clarkia rhomboidea R. A. Schlising 1980-5-26 3601 Butte Several mi sw village of Cohasset, along fire road e of Cohasset Road. 411 Comment
  CHSC59117  Clarkia rhomboidea L. P. Janeway 1991-6-1 3982 Butte West-facing cut-bank of Dark Canyon Road 1.45 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 472 Comment
  CHSC70749  Clarkia rhomboidea L. P. Janeway 1993-6-23 4395 Butte Upper end of Galen Ridge 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 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
  CHSC70754  Clarkia rhomboidea L. P. Janeway 1993-7-7 4433 Butte Canyon of North Fork Feather River; along dirt road to the Bear Ranch Creek Falls, 0.7 mi south of Arch Rock Tunnel. 502 Comment
  SEINET10492534  Clarkia rhomboidea Mary Susan Taylor 1978-7-21 Taylor 1792 Butte of Lake Madrone, at Oroville-Quincy Hwy turnoff, ca 10 miles NE of Oroville; Yellow Pine Forest. 2000 feet. 610 Comment
  UCD104987  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  CHSC39353  Clarkia unguiculata Lowell Ahart 1983-6-30 4170 Butte On the road cut-banks along old Highway 40, near the rest area, and near where the road runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  POM38549  Clarkia unguiculata C. C. Bruce 1897-06 1854 Butte Little Chico. Comment
  SEINET10572700  Claytonia parviflora Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3467 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
  CHSC33107  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-15 3745 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70; near creek crossing rd. 1158 Comment
  CHSC34767  Claytonia parviflora subsp. parviflora H. A. McLane 1980-4-25 17 Butte N of Ponderosa Way, Plumas Natl. Forest. 377 Comment
  CAS-BOT-BC439774  Claytonia perfoliata Lowell Ahart 1981-4-9 2755 Butte On banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10929034  Claytonia perfoliata var. depressa Mary Susan Taylor 1979-3-31 Taylor 1976 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  SEINET10895985  Claytonia rubra Mary Susan Taylor 1981-4-16 Taylor 3541 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CHSC26739  Claytonia rubra subsp. rubra M. S. Taylor 1977-7-15 1401 Butte Scattered creekside in the shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  CHSC98972  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CHSC4021  Clematis lasiantha J. E. Bowlin 1967-3-10 5 Butte Down hillside, ca. 10 feet w of Cohasset Rd. and ca. 5.9 miles n of the corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  SBBG40356  Clematis lasiantha J. Ingram, A. Ingram 1960-4-7 513 Butte steep bank below Honey Run Rd, between 2 and 3 mi S of Paradise Comment
  SEINET5337772  Clematis lasiantha R. T. Short 1959-4-11 s.n. Butte 15 miles east of Oroville on US 40. 549 Comment
  CHSC66443  Clematis ligusticifolia Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  RSA0005987  Collinsia bruceae C. C. Bruce 1897-06 2063 Butte Little Chico. Comment
  SBBG17350  Collinsia heterophylla M. Vincent 1962-4-20 214 Butte Hwy 40, Feather River Cyn Rd, 6 mi NE of Oroville near site of Feather River Dam Comment
  CHSC33340  Collinsia parviflora R. Banchero 1980-6-26 270 Butte 3.2 mi se of the jct of Humbolt Rd and Skyway Rd along Bull Hill Rd. 2.5 mi n of the jct of Skyway and Bull Hill Rd. 1524 Comment
  CHSC38687  Collinsia sparsiflora var. bruceae Vernon Oswald 1983-3-7 136 Butte Upper Bidwell Park, Chico, near the South Rim Trail ca. 0.15 mi w of the power lines. 128 Comment
  CHSC43510  Collinsia sparsiflora var. collina Lowell Ahart 1979-4-17 1829 Butte About 1/4 mile north of Avacado Avenue, about 2 miles north-west of Bangor. 137 Comment
  UC725775  Collinsia sparsiflora var. collina A. A. Heller 1938-4-23 15048 Butte between the West Branch and the North Fork of the Feather River summit; on the Feather River Highway Comment
  UC1586405  Collinsia sparsiflora var. collina Lowell Ahart 1991-8-8 6643 Butte On a steep slopoe on the W side of north Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles N and 2 annd 3/4 miles E of Honcut, about 12 miles SE of Oroville. Foothill Woodland. 45 Comment
  CHSC40882  Collinsia tinctoria Lowell Ahart 1985-5-15 4977 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
  CHSC45309  Comandra umbellata subsp. californica Vernon Oswald 1985-4-28 1723 Butte Upper Bidwell Park, Chico, along Yahi Trail where it first parallels Chico Creek e of Parking Area R. 158 Comment
  CHSC1952  Conium maculatum A. Goekler 1929-5-21 Butte Chico. 57 Comment
  UCD149838  Consolida ajacis Harry A. George 1967-4-24 s.n. Butte Table Mt. Comment
  POM70644  Convolvulus arvensis C. C. Bruce 1897-05 2040 Butte Butte Creek. Comment
  CAS-BOT-BC286062  Conyza canadensis John Thomas Howell 1959-9-20 34705 Butte Feather River Highway at West Branch bridge Comment
  SEINET5766733 Image available Corallorhiza maculata Marion Ownbey, Ruth P. Ownbey 1938-1 1732 Butte Under Abies, Humboldt Summit above Jonesville, Butte County, alt. 6650ft. 2027 Comment
  SEINET10469998  Corallorhiza maculata Mary Susan Taylor 1980-7-6 Taylor 3080 Butte T26N R3E nw sec 25, Butte Meadows quad; on W side of Hwy 32, ca. 0.3 mi S of Soda Springs Campground, along creek in Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  CHSC2335  Corallorhiza striata J. Chew 1954-5-30 Butte Road between Rag Dump and Flea Valley. 1097 Comment
  CHSC105792  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2010-9-12 17150 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam. 243 Comment
  CHSC112539  Cordylanthus pilosus subsp. hansenii B. Castro 2012-10-18 1989 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 700 ft downstream (WSW) of its crossing under the Cohasset Hwy bridge. 56 Comment
  CHSC48986  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1983-8-17 977 Butte Humbolt Rd., 2.1 mi ne of Lomo. 1383 Comment
  CHSC48988  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1985-7-15 1906 Butte Concow Rd. 0.2 mi s of Ponderosa Way, also called Rim Rd. 950 Comment
  UC195372  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  CAS-BOT-BC210519  Cornus sessilis C. R. Quick 1943-7-26 43 -20 Butte Big Bar Mt. near Fagan's Saddle, Plumas Nat. Forest Comment
  CDA4039  Coronilla varia L. Ahart 2006-6-24 12862 Butte 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. Comment
  RSA0125553  Corydalis caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  SFV16941  Corylus cornuta subsp. californica J. N. Hogue 1980-9-6 83 .7 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC28013  Corylus cornuta var. californica M. S. Taylor 1978-7-21 1779 Butte Lake Madeone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 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
  CHSC102504  Cotoneaster lacteus Lowell Ahart 2009-5-30 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. 311 Comment
  CHSC77814  Cotula australis Lowell Ahart 2000-3-25 8323 Butte Waste area near the west side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  SEINET7072736  Crassula solieri A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  CHSC111390  Crassula tillaea Lowell Ahart 2012-5-2 17980 Butte On the north side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  JEPS107326  Crassula tillaea Lowell Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET10483806  Crataegus oxyacantha Mary Susan Taylor 1975-5-24 Taylor 769 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CAS-BOT-BC376469  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  CHSC33291  Croton setiger S. Posner 1972-9-24 2 Butte Edge of Skyway between Hwy. 99 and Humbug Rd. Comment
  CHSC118498  Crucianella angustifolia L. P. Janeway 2016-5-9 11953 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of junction of Ponderosa Way and Road 19N19. 701 Comment
  SEINET10500612  Crucianella angustifolia Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4037 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC29961  Cryptantha flaccida R. A. Schlising; R. Banchero 1980-6-2 3616 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  POM71368  Cryptantha flaccida C. C. Bruce 1891-03 1930 Butte Hams? Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  CHSC42516  Cryptantha intermedia Lowell Ahart 1987-5-9 5577 Butte Along Pulga Road, about 1/4 mi west of Bardees Bar along the North Fork of the Feather River. about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC47049  Cryptantha intermedia Lowell Ahart 1983-6-30 4180 Butte 1.5 miles north-east of Concow Reservoir. 550 Comment
  CHSC47981  Cryptantha intermedia Vernon Oswald 1984-4-4 1116 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  UC708010  Cryptantha intermedia McKee and Westover 1918-6-5 7 Butte Paradise 609 Comment
  JEPS94944  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 Butte about 1/4 mi e Table Mountain (near some small streamlets of creek, about 8 air mi ne of Stirling City); Snow Meadow, Little Kimshew Creek 1524 Comment
  CHSC51257  Cucumis melo Lowell Ahart 1990-10-5 6629 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bidge across Lake Oroville. 228 Comment
  CHSC7190  Cupressus macnabiana F. Kimball 1969-4-23 67 Butte Roadsides of Coutolenc Rd. 0.3 mi n of Paradise-Stirling City Skyway, 0.5 mi n of Magalia. 762 Comment
  UCD133530  Cupressus macnabiana Mike Mitzel 1977-2-13 3 Butte ca. 0.5 mi W of the West Branch River and 4 mi N of Paradise. 762 Comment
  CHSC60974  Cuscuta californica var. californica Lowell Ahart 1993-6-20 7001 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA0037106  Cuscuta campestris Lowell A. Ahart 2013-11-17 19270 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  SBBG120020  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte S edge of the N Fork of the Feather River, just W of Mill Crk, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 3/4 mi NE of Pulga, ca. 21 mi (air) NE of Oroville 431 Comment
  RSA299404  Cuscuta howelliana L. Ahart 1979-10-7 s.n. Butte Peter Ahart Ranch, Honcut. In vernal pool in a farmed field in Valley Grassland. 35 Comment
  SEINET10837188  Cuscuta howelliana Mary Susan Taylor 1979-5-6 Taylor 2008 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UCD126312  Cuscuta indecora var. indecora A. A. Heller 1914-8-11 11677 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  JEPS117173  Cymopterus terebinthinus var. californicus Lowell Ahart 2010-9-21 17233 Butte On dry rocky dark soil, on both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Resevoir Dam, about 7 miles (air) southeast of Butte Meadows Comment
  CHSC113125  Cynodon dactylon Lowell Ahart 2013-11-18 19284 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC38803  Cynodon dactylon Vernon Oswald 1983-6-18 708 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC4385  Cynodon dactylon M. Hillier 1966-5-30 Butte In juniper bed at corner of Legion Ave and Warner St., Chico. Comment
  CHSC99644  Cynodon dactylon H. Koeth 2007-4-26 Butte 20th and Salem Street, Chico. UTM 10 600693E 4396754N. Comment
  CHSC33516  Cynoglossum occidentale R. Preston; R. Banchero, R. A. Schlising 1981-7-14 4151 Butte N part of county, W of Humbug Summit. 1828 Comment
  UC436303  Cynoglossum occidentale E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  JEPS103526  Cynosurus echinatus Lowell Ahart 2002-6-21 9737 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS124403  Cynosurus echinatus Lowell Ahart 2015-6-16 20226 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC109792  Cyperus difformis Lowell Ahart 2012-10-20 18513 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UC1100546  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CHSC102829  Cyperus eragrostis Lowell Ahart 2009-6-30 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC10559  Cyperus eragrostis Lowell Ahart 1969-9-24 34 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45752  Cyperus eragrostis L. P. Janeway 1987-6-13 2190 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  RSA0037179  Cyperus eragrostis Lowell A. Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and 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-BC114596  Cyperus eragrostis Forman Taylor McLean 1921-9-25 s.n. Butte Weed in rice fields, Nelson. 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
  CHSC43785  Cyperus esculentus Vernon Oswald 1987-7-23 3145 b Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CAS-BOT-BC114272  Cyperus esculentus A. A. Heller 1939-8-26 15480 Butte Wet ground in a field opposite the sewer farm on the River Road west of Chico. Comment
  RSA724967  Cyperus flavescens L. Ahart 2006-10-8 13429 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Hwy 70, about 0.5 mile north of the Cresta Power House. 610 Comment
  SEINET7581940 Image available Cyperus flavescens Lowell Ahart 2006-10-8 13429 Butte East side of the North Fork of the large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 610 Comment
  CHSC111614  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Common. Agricultural. 31 Comment
  CHSC78487  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte South end of the large dredge pond in the Oroville Wildlife Area on the west side of the Feather River between Palm Avenue and Vance Avenue. 28 Comment
  CHSC68403  Cyperus niger L. P. Janeway 1988-6-26 2884 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; about 0.6 mi northeast of the high voltage power lines. 182 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
  UCD141194  Cyperus niger L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CHSC43293  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte Sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC110473  Cystopteris fragilis L. P. Janeway 2013-5-21 11115 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 1.1 air km north of Poe Dam, along Camp Creek Road at crossing of Dogwood Creek. 585 Comment
  CHSC39304  Cystopteris fragilis Lowell Ahart 1983-6-26 4130 Butte Along Ponderosa Way, about 2 miles south-east of the inersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET10968264  Dactylis glomerata Mary Susan Taylor 1978-7-21 Taylor 1815 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  SEINET10598269  Danthonia californica var. americana Quick 1965-7-25 QUICK 65 -18 Butte Swampy alder thicket below spring. Section Corner Meadow, Coyote Gap-Four Trees Road. Comment
  SEINET10546583  Datura meteloides Lowell Ahart 1985-9-14 Ahart 5167 Butte On dry red soil on the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  UCD126526  Datura stramonium E. M. Johnston 1915-7-1 79 J Butte Biggs. Comment
  CHSC116121  Datura stramonium var. stramonium Lowell Ahart 2015-11-7 20621 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC45735  Datura wrightii Elizabeth L. Knight 1988-4-15 7 Butte At Parrott Landing ca. 50 ft e of Sacramento River ca. 11 m sw of Chico. River bank. 30 Comment
  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
  CHSC56763  Delphinium depauperatum R. A. Schlising; R. Banchero 1980-7-31 3948 Butte NE of Snag Lake. In meadows. 1828 Comment
  CHSC24638  Delphinium gracilentum Keith Lickey 1976-4-21 89 Butte Old hwy 70 ca 500 m n of Big Bend Road at deadend, and 30 m s of Hwy 70. 609 Comment
  CAS-BOT-BC8575  Delphinium hansenii Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  UCD95781  Delphinium hansenii M. Vincent 1968-6-5 776 Butte 1 mile S. of Cherokee on road to Oroville. Roadside at old Campbell Ranch. Comment
  CHSC44423  Delphinium hansenii subsp. hansenii Lowell Ahart 1988-6-29 6086 Butte Along Bloomer Hill Road (Ponderosa Way), about 1 1/2 miles west of Oroville Quincy Highway. 457 Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  UCD22641  Delphinium hesperium Joseph Laferriere 1982-4-18 3 Butte Side of Hwy 70, 1/4 mile SW of jet of Baggett-Marysville Rd., 3 miles south of Oroville. 65 Comment
  CHSC115449  Delphinium nudicaule M. Sutton; K. Schierenbeck 2013-5-5 44 Butte Deer Creek. 657 Comment
  CHSC40060  Delphinium nudicaule C. C. Bruce 1899-4-1 185 Butte Grain fields. Comment
  CHSC44985  Delphinium nudicaule Martin Devanna 1987-4-3 5 Butte Ca. 4 mi ne Chico. 10 m nw Big Chico Creek. 198 Comment
  SEINET5338095  Delphinium nuttallianum D. H. Heinze 1963-4-16 s.n. Butte Chico Calif., Valley grassland. 61 Comment
  CHSC30886  Delphinium patens subsp. patens J. D. Jokerst 1979-3-20 1153 Butte Top of North Table Mt, W edge of Mt at the waterfall of the South branch of Coal Cr. 365 Comment
  CAS-BOT-BC121623  Delphinium patens subsp. patens Saichi Kawahara 1968-5-4 394 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC52505  Delphinium variegatum Judy A. LeFurgey 1978-4-15 26 Butte Ca. 6 mi ne of Chico s side of field by Horseshoe Lake, ca. 0.2 mi n of Chico Mun. Golf Course Clubhouse. 60 Comment
  CHSC53169  Delphinium variegatum Mark Johnson 1974-4-7 19 Butte On s side of Butte Creek, s of Honey Run Covered Bridge, 10 mi se of Chico. 152 Comment
  RSA718042  Delphinium variegatum R. D. Fischer 2004-4-4 802 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side Hwy 32 along Guardian Trail between the Pine and Bloodypin Trails 335 Comment
  POM99307  Delphinium variegatum C. C. Bruce 1897-03 1918 Butte [No location data on label] Comment
  CHSC1466  Delphinium variegatum subsp. variegatum Garnett; Durbrow 1928-3-20 Butte Richardson Springs road. 121 Comment
  CAS-BOT-BC16976  Delphinium variegatum subsp. variegatum Ira L. Wiggins 1925-3-25 1414 Butte Three and one half miles east of Durham on State Land Colony highway. Comment
  SEINET10841534  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-4-14 Taylor 3534 Butte T22N R4E east central third of sec 12, Pulga SW quad. Serpentine ridge on W side of Ponderosa Way (Rim Rd), ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC37270  Deschampsia danthonioides L. Ahart 1982-6-15 3562 Butte On a lava cap, ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC75428  Deschampsia danthonioides Jennifer Slater 1997-4-27 40 Butte At the Wurlitzer addition of the Vina Plains Preserve west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  SEINET10867400  Deschampsia danthonioides Alan A. Beetle 1941-6-27 Beetle 2746 Butte Near Lomo at road forking to Chico Creek. Open forest of Pinus ponderosa and Libocedrus decurrens. Comment
  SD122535  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 4710 Butte Ca., 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  SD8288  Dicentra formosa Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  SEINET12091623  Dicentra formosa G. W. Cox 1972-1 10 Butte Found beside Centerville Rd., about 5 mi NE of Centerville Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC44307  Dicentra uniflora Lowell Ahart 1988-3-28 5955 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  SEINET10507904  Dichanthelium acuminatum Mary Susan Taylor 1979-8-4 Taylor 2178 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
  POM116006  Dichanthelium acuminatum var. fasciculatum C. C. Bruce 1897-05 1879 Butte Little Chico Comment
  CAS-BOT-BC500058  Dichelostemma capitatum Grace Kermode 1899-5-31 s.n. Butte Chico Comment
  UCD139228  Dichelostemma capitatum Richard Sannar 1982-3-16 24 Butte along State Route 70, 1 mile north of intersection with Palermo Road, south of Oroville. Comment
  CHSC2096  Dichelostemma capitatum subsp. capitatum E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  JEPS114183  Dichelostemma capitatum subsp. capitatum L. P. Janeway 2007-5-6 8967 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. Comment
  RSA333578  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-22 29 Butte On Pentz Road, 1.1 mile W of Williams Road intersection. Comment
  CAS-BOT-BC483262  Dichelostemma capitatum subsp. pauciflorum John Thomas Howell 1962-6-16 37549 Butte Magalia, Sierra Nevada 731 Comment
  CHSC101669  Dichelostemma multiflorum Lowell Ahart 2009-4-26 15647 Butte On the west side of Guardians Trail, about 200 yards southwest of Pine Trail, 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. 381 Comment
  SEINET10472708  Dichelostemma multiflorum Mary Susan Taylor 1980-5-27 Taylor 2727 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  HSC38019  Dichelostemma volubile Thomas W. Nelson, Jane P. Nelson 1976-5-10 2479 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  SEINET10905136  Dichelostemma volubile Mary Susan Taylor 1986-5-6 Taylor 5614 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  SD120609  Dichondra donelliana Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 331 2a Butte North Honcut Creek, Ahart Ranch, ca. 2.5 miles northest of Honcut between Marysville and Oroville. 49 Comment
  RSA299272  Digitaria ischaemum J. T. Howell 1959-9-20 34642 Butte Lower foothills, eastern outskirts of Oroville 61 Comment
  CHSC29252  Digitaria sanguinalis M. S. Taylor 1979-10-2 2209 Butte Sacramento River at Chico Landing, off River Rd., ca. 5 mi w of Chico. 30 Comment
  CHSC69736  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte About 20 yards north of the South Fork of the Feather River and on the west side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC76019  Digitaria sanguinalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8154 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
  CHSC94982  Digitaria sanguinalis Lowell Ahart 2006-10-8 13433 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  JEPS110377  Digitaria sanguinalis Lowell Ahart 2006-9-11 13305 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UCD64140  Digitaria sanguinalis L. Ahart 1982-8-22 3745 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 50 Comment
  CHSC100801  Diplacus jepsonii R. A. Schlising; L. Janeway 1988-7-1 4548 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CHSC12732  Diplacus tricolor B. McIntire 1974-3-20 17 Butte Collected in meadow w of Horseshoe Lake in Upper Bidwell Park. Comment
  CHSC50352  Disporum hookeri Vernon Oswald 1990-5-14 4214 Butte Marsh located ca. 1.5 mile south-southeast of Brush Creek. 950 Comment
  RSA4135  Dodecatheon alpinum subsp. majus E. B. Copeland 1930-6-26 s.n. Butte Jonesville. 1550 Comment
  HSC23362  Dodecatheon hendersonii R. J. Swift 1970-3-25 10 Butte Along Honey Run Rd., ca. 2.2 mi. NE of Covered Bridge at entrance to McEnespy's Ranch 244 Comment
  SEINET10449646  Dodecatheon jeffreyi Mary Susan Taylor 1978-6-24 Taylor 1646 Butte Cherry Creek meadow, on S side of Old Humboldt Road, ca. 4 mi E of Butte Meadows; Montane Meadow in Yellow Pine Forest. 1524 Comment
  UCD38751  Dopatrium junceum Beecher Crampton 1957-9-17 4622 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  SEINET10972620  Downingia bicornuta Mary Susan Taylor 1978-5-7 Taylor 1602 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC116693  Downingia bicornuta var. bicornuta Lowell Ahart 2016-5-17 20842 Butte Middle of a large vernal pool, about 1/2 dmile east of La Porte Road, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC117343  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2007-7-24 2046 Butte Sacramento Valley. Off E edge of Thermalito Afterbay, ca 1.36 air mi E of Hwy 99 and 1 mi S of Highway 162E. Just S of the Afterbay perimeter road, at NE corner of low pond (impoundmant) with willows. 43 Comment
  POM285433  Downingia cuspidata Lyman Benson 1935-3-27 6357 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  UC890622  Downingia cuspidata Elmer I. Applegate 1928-4-27 5378 Butte between Richvale and Biggs Comment
  RSA325019  Draba verna L. Ahart 1984-2-27 4497 Butte Peter Ahart Ranch, NE of Honcut, ca 12 miles S of Oroville. 50 Comment
  CHSC101077  Draba verna var. aestivalis Lowell Ahart; John Dittes 2009-3-20 15503 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC2102  Dracunculus vulgaris M. Anthony 1954-5-14 Butte Campus near Chico Creek. Comment
  CHSC23694  Draperia systyla M. S. Taylor 1976-5-5 1124 Butte On s side of Hwy 70, ca. 1/4 mi n of Bear Creek, ca. 30 mi ne of Oroville. Comment
  CHSC40030  Draperia systyla A. A. Heller 1938-5-28 15128 Butte very common along Highway #24 in the vicinity of Pulga. 426 Comment
  SEINET3450953  Draperia systyla Unknown 2003-7-12 10376 Butte Oroville, Oroville, about 17 air miles northeast, west side of Milsap Bar Road, about 2.5 air miles east of the Brush Creek Work Center 1030 Comment
  UC572409  Draperia systyla P. L. Johannsen 1936-7-28 966 Butte 2.25 miles north of junction of Butte Creek and Secret Creek; Paynes Creek Quad. 1280 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  CHSC3500  Dryopteris arguta M. Gregg 1966-3-7 25 Butte Approx. 12.3 miles from CSC Ad. Bldg. Up Humbug Rd. off the Skyway across the covered bridge. Comment
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  JEPS116139  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northea 381 Comment
  SEINET10530138  Dryopteris arguta Mary Susan Taylor 1981-5-7 Taylor 3638 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  SEINET10530144  Dryopteris arguta Mary Susan Taylor 1980-2-17 Taylor 2355 Butte T20N R6E central w border of sec 4.. On S side of Lower Forbestown Road, ca. 3 mi W of Forbestown. Yellow Pine Forest. 610 Comment
  CHSC115419  Duchesnea indica Kate Ronan 2013-5-9 Butte City of Chico, Bidwell Mansion State Park. Found in cultivated lawn area behind Bidwell Mansion on Sol-Wil-Le-No Ave. 60 Comment
  CHSC30036  Dudleya cymosa L. Ahart 1980-5-25 2319 Butte About 1 mile e of the Bangor-Oroville Hwy, along Swedes Flat Rd, near Bangor. 320 Comment
  CHSC101798  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
  CHSC38406  Dudleya cymosa subsp. cymosa Vernon Oswald 1983-4-25 394 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 359 Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC81778  Dysphania ambrosioides Lowell Ahart 2001-10-10 9413 Butte On the north side of Gridley Road, about 100 yards southeast of the bridge across the Feather River, about 3 1/2 miles (air) east of Gridley. 27 Comment
  CHSC45547  Dysphania botrys Lowell Ahart 1984-6-8 4672 Butte Along the dirt road to the generator on the north side of the Ponderosa Reservoir, about 2 miles north of Forbestown. 426 Comment
  CHSC113194  Dysphania pumilio Lowell Ahart 2013-11-29 19292 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
  CAS-BOT-BC197097  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CAS-BOT-BC197104  Echinochloa crus-galli Mary Susan Taylor 1977-11-10 s.n. Butte Ca. 4 mi. s. of Chico 30 Comment
  SBBG116106  Echinochloa crus-galli B. Crampton 1963-9-9 6887 Butte ca. 5 mi NW of Biggs, Biggs Rice Experiment Stn Comment
  UC1131534  Echinochloa crus-galli H. S. Yates 1936-8-14 6120 Butte 10 mi s Durham; Chico Quad. Comment
  SEINET10509318  Echinochloa crus-galli Lowell Ahart 1985-11-7 Ahart 5240 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
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC197254  Echinochloa muricata var. microstachya A. A. Heller 1914-5-19 11418 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC291137  Eclipta prostrata Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  JEPS124104  Elatine Lowell Ahart 2015-5-17 20192 Butte About 1 3/4 miles west of Honcut. Comment
  CHSC46263  Elatine californica Vernon Oswald 1989-5-17 3776 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  JEPS123876  Eleocharis acicularis Lowell Ahart 2015-4-24 20062 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  CDA38954  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC113639  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-4-28 2110 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC46463  Eleocharis bella V. Oswald; L. Ahart 1989-6-27 3829 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Meadow along Butte Creek. 1767 Comment
  CHSC55613  Eleocharis bella L. P. Janeway 1987-6-5 2143 Butte Small pool near confluence of Ram Creek and French Creek. 609 Comment
  CHSC78287  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS98431  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  RSA127039  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow. 1341 Comment
  CAS-BOT-BC113370  Eleocharis engelmannii Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  JEPS104265  Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  UC1594626  Eleocharis engelmannii Lowell Ahart 1992-5-23 6774 Butte 2 mi W of Biggs (on N side of Biggs Princeton Road) 30 Comment
  UCD49597  Eleocharis engelmannii John M. Tucker 1953-8-28 2677 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC55452  Eleocharis macrostachya L. P. Janeway 1991-4-7 3992 Butte Ca 0.3 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 30 Comment
  CHSC62514  Eleocharis macrostachya B. Castro 1987-5-21 116 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E of Altatina Drive. 454 Comment
  CHSC8754  Eleocharis macrostachya S. Chulasmai 1966-5-20 39 Butte Horse-shoe (mud) Lake. Comment
  UC143747  Eleocharis macrostachya E. B. Copeland 1903-5-12 3182 Butte Chico Pacific Coast Comment
  CHSC37108  Eleocharis pachycarpa L. Ahart 1982-10-15 3887 Butte Sand bar along edges of North Honcut Creek, ca. 1 mi n and 2.7 mi e of Honcut. 50 Comment
  JEPS98597  Eleocharis parishii Lowell Ahart 2000-5-30 8409 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  JEPS104211  Eleocharis rostellata Lowell Ahart 2003-5-27 10224 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue, Chico. 121 Comment
  CHSC68449  Eleocharis suksdorfiana L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2499 Butte Coon Hollow, 1.0 mi southeast of the Humbug Summit Road. Meadows on north side of the creek. 1661 Comment
  UCD61273  Eleusine indica L. E. Hazeltine 1916-7-27 Butte Chico. Comment
  CHSC75434  Elymus caput-medusae Jennifer Slater 1997-4-20 30 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC227299  Elymus elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  SEINET10564686  Elymus elymoides A. Arthur Heller 1917-7-29 Heller 12867 Butte Summit above Jonesville in granite, in open forest of Abies magnifica. Undershrubs are Uva ursi, Cerasus, Ceanothus cordulatus and velutinus. 2134 Comment
  CHSC47616  Elymus glaucus Lowell Ahart 1977-6-13 1410 Butte On the banks 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
  POM183178  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville. 1524 Comment
  UCD61886  Elymus glaucus L. E. Hazeltine 1916-7-13 Butte Chico. Comment
  SEINET10554352  Elymus glaucus A. Arthur Heller 1914-7-23 Heller 11614 Butte Occasional in open places about thickets, Chico Meadows. This is in the yellow pine belt, but incense cedar, Douglas fir, & white fir are plentiful. 1219 Comment
  CAS-BOT-BC203427  Elymus glaucus subsp. glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CAS-BOT-BC203430  Elymus glaucus subsp. glaucus John Thomas Howell 1951-6-26 27517 Butte Big Bend Mt. 609 Comment
  JEPS119860  Elymus glaucus subsp. glaucus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC234102  Elymus multisetus Lowell Ahart 1977-6-16 1506 Butte Peter Ahart Ranch, Honcut 50 Comment
  SD34470  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico Comment
  UCD62438  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico. Comment
  JEPS94566  Elymus stebbinsii Lowell Ahart 1997-7-11 7744 Butte road cut on n side of dirt road se Cold Creek (about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City) 1219 Comment
  SEINET12193971  Epilobium adenocaulon L. Ahart, Ahart, P. 1983-1 4212 Butte ca 5 mi NE of Forbestown, Forbestown Reservoir 450 Comment
  SEINET10453189  Epilobium adenocaulon var. occidentale Mary Susan Taylor 1978-7-19 Taylor 1745 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC70331  Epilobium anagallidifolium R. A. Schlising 1983-8-27 4453 Butte N part of county; Coon Hollow Creek, NW of Philbrook Reservoir. Meadow along creek. 1706 Comment
  SEINET6631140 Image available Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-1 428 Butte Jonesville 1600 Comment
  CDA42894  Epilobium campestre L. Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC105262  Epilobium campestre Lowell Ahart 2010-6-20 16826 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC27723  Epilobium canum subsp. latifolium Robert A. Schlising 1978-10-10 3344 Butte Hwy 70, Feather River Canyon, from 0.2 to 0.5 mi north of Arch Rock Tunnel; roadside. Comment
  CHSC111163  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2012-6-21 18205 Butte On the south sife of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CHSC28775  Epilobium ciliatum subsp. ciliatum J. D. Jokerst 1979-7-12 319 Butte 1.0 mi. W. of Kimshew Falls and W. Branch Feather River along smaller stream. 853 Comment
  CHSC38561  Epilobium cleistogamum Vernon Oswald 1983-6-3 631 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the diversion channel. 79 Comment
  RSA795887  Epilobium cleistogamum L. Ahart 2012-6-4 18154 Butte Open pasture field, Peter Ahart Ranch, about 2.25 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  CHSC94065  Epilobium densiflorum R. D. Fischer 2005-6-12 742 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made near the junction of Guardian Trail on the dry roadbed, an opening in a brush/oak woodland. 219 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
  JEPS119880  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  JEPS110089  Epilobium glaberrimum subsp. glaberrimum Lowell Ahart 2006-8-15 13187 Butte Bare shallow drainage, east part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC70334  Epilobium minutum R. A. Schlising 1983-6-9 4419 Butte N part of county, along Humboldt Road, 1.9 mi NE of junction with Hwy 32 at Lomo. Carpenter Ridge. 1356 Comment
  RSA0118759  Epilobium oregonense Lowell A. Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC112936  Epilobium torreyi B. Castro 2012-6-5 1924 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 0.16 mi ENE of jcn of E. Hamilton and Larkin Roads. 36 Comment
  CHSC38564  Epilobium torreyi Vernon Oswald 1983-5-30 577 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 304 Comment
  CHSC90982  Epilobium torreyi Lowell Ahart 2005-5-11 11795 Butte Swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  CHSC109673  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC57331  Equisetum hyemale subsp. affine Michelle T. Wagner 1990-4-19 17 Butte 3 mi e of Butte Meadows, 25 ft sw of creek. 762 Comment
  JEPS122337  Equisetum hyemale subsp. affine Lowell Ahart 2014-4-16 19374 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. Comment
  CHSC99659  Equisetum laevigatum H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows on a slope. UTM 10 628108E 4440095N. 1326 Comment
  CHSC35321  Equisetum telmateia subsp. braunii M. S. Taylor; K. Tharp 1982-4-8 4288 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitor's Center, Oroville. 243 Comment
  CHSC69738  Eragrostis mexicana subsp. virescens Lowell Ahart 1997-10-24 7939 Butte About 20 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC42375  Eragrostis pectinacea var. pectinacea Lowell Ahart 1987-5-27 5697 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
  CAS-BOT-BC278508  Eragrostis pilosa Lowell Ahart 1985-10-12 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 Comment
  CHSC110382  Eragrostis pilosa var. pilosa Lowell Ahart 2012-8-22 18421 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  JEPS103327  Eragrostis pilosa var. pilosa Lowell Ahart 2002-9-7 9927 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  JEPS113670  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  JEPS120726  Eragrostis pilosa var. pilosa Lowell Ahart 2013-10-16 19117 Butte South edge of the paved road, about 100 yards SE of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile W of Larkin Road, about 2 air miles SW of the Oroville Airport. Comment
  UCD65674  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC36079  Eremogone cliftonii R. E. Preston; R. Banchero, R. A. Schlising 1982-6-23 4300 Butte N of Concow area and n of Flea Mt. in central part of county; at roadside. 1112 Comment
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Jul 8 2014
  CHSC92519  Eremogone cliftonii Samantha Mackey Hillaire; Barb Castro 2005-6-21 1223 Butte North of Pulga, near Lockerman Creek. Near transmission lines. UTM 10 S 0634984,4413006 NAD83. 1127 Comment
  POM359551  Ericameria bloomeri H. F. Copeland 1927-9-2 383 Butte Jonesville. 1524 Comment
  SEINET10473505  Erigeron Mary Susan Taylor 1981-5-21 Taylor 3788 Butte In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. 1600 Comment
  CHSC79452  Erigeron annuus G. F. Hrusa; T. D. Wilfred 1997-7-3 13966 Butte Northern California, Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  CHSC28608  Erigeron canadensis M. S. Taylor 1977-11-10 1515 Butte At jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  CHSC78992  Erigeron canadensis Lowell Ahart 2000-11-4 8716 Butte Just 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
  CAS-BOT-BC295165  Erigeron inornatus Lowell Ahart 1988-7-28 6138 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 Comment
  CAS-BOT-BC295166  Erigeron inornatus Vernon Oswald; Lowell Ahart 1987-7-1 3050 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville 1828 Comment
  CHSC88077  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on canyon edge of Humboldt Trail n. of Bloody Pin Trail junction. UTM: 10609319E 4405116N. 411 Comment
  CHSC100522  Erigeron sumatrensis Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC61327  Eriogonum lobbii Lowell Ahart 1993-7-31 7143 Butte On the south side of the dirt road that leads to Ramsey Bar, about 1/2 mile north of Ramsey Bar. 1371 Comment
  CAS-BOT-BC263201  Eriogonum marifolium var. marifolium H. F. Copeland 1920-7-11 72 Butte Scotch John Meadows 1828 Comment
  CHSC34041  Eriogonum nudum var. oblongifolium L. Ahart 1981-7-7 2930 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  JEPS87617  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  POM306151  Eriogonum nudum var. oblongifolium Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  CAS-BOT-BC269854  Eriogonum nudum var. pubiflorum A. A. Heller 1914-7-22 11585 Butte Little Summit 1463 Comment
  SBBG28234  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 Butte Jonesville, between Jones and North Willow Crks 1700 Comment
  SEINET3404037 Image available Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville: Ridge between Jones and North Willow Creeks 1700 Comment
  UC478525  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC34044  Eriogonum umbellatum var. ahartii L. Ahart 1981-7-7 2929 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  UC912724  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte summmit above Jonesville 2133 Comment
  JEPS100230  Eriogonum umbellatum var. speciosum Dean W. Taylor 2002-7-3 18215 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
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Jan 25 2016
  SEINET11924843  Eriogonum umbellatum var. speciosum Unknown 1981-1 2929 Butte along the edge of dirt road 1/2 mi W of the Forbestown Reservoir, NE of Forbestown 701 Comment
  UC1594628  Eriogonum ursinum Lowell Ahart 1992-7-29 6884 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  SEINET10871615  Eriogonum ursinum Mary Susan Taylor 1978-7-18 Taylor 1698 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC30842  Eriogonum ursinum var. ursinum M. S. Taylor; L. Ahart, J. Jokerst 1980-8-2 3218 Butte Comment
  CHSC73976  Eriogonum ursinum var. ursinum B. Castro; L. Gehrung 1998-7-2 801 Butte Ca y air mi NW of Brush Creek, ca 0.5 mi E of Hungry Hunt Peak, ca 200 ft W of USFS Rd 23N28. 1091 Comment
  CAS-BOT-BC262341  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte Along Feather River about 1 mi. west of Oroville 45 Comment
  CAS-BOT-BC301307  Eriophyllum lanatum var. croceum C. R. Quick 1941-6-7 41 -36 Butte Big Bar Mt. Comment
  CHSC46817  Eriophyllum lanatum var. croceum R. A. Schlising; F. J. Fuller 1988-6-17 4544 Butte E Butte Co. NE of Brush Creek and Mountain House. 1194 Comment
  CAS-BOT-BC308172  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte Cohasset, Sierra foothills Comment
  CHSC109576  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2012-6-7 10856 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines 895 Comment
  SFV3892  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 94 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC600403  Eriophyllum lanatum var. grandiflorum H. F. Copeland 1931-6-10 Butte gulch draining into Colby Canyon; Jonesville 1524 Comment
  CHSC35702  Erodium brachycarpum J. D. Jokerst 1982-5-1 1550 Butte Top of North Table Mt, SE of Cherokee Rd ca. 200 meters at mesa's E edge. 60 Comment
  CHSC38450  Erodium brachycarpum Vernon Oswald 1983-3-5 116 Butte Upper Bidwell Park, Chico, on the north rim at a level w of Horseshoe Lake. 128 Comment
  CHSC38452  Erodium cicutarium Vernon Oswald 1983-3-13 153 Butte Upper Bidwell Park, Chico, in Parking Area P (2.0 mi e of the power lines). 207 Comment
  UCR237319  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18731 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC14197  Eryngium castrense F. T. Griggs 1973-3-20 Butte 10 miles s of Chico, 0.4 miles s of the inersection of Pentz Road and Hwy 99E. Comment
  CHSC34161  Eryngium castrense L. Ahart 1981-8-31 3060 Butte Wyandotta Lake, ca. 8 mi. e of Oroville. 450 Comment
  JEPS127005  Eryngium castrense Lowell Ahart 2016-5-24 20849 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  POM219374  Erysimum capitatum var. capitatum H. F. Copeland 1931-6-10 1527 Butte Jonesville. Between Willow and Colby Creeks. 1524 Comment
  CHSC105163  Erythranthe bicolor Christopher T. Ivey 2007-5-22 369 Butte Humboldt Rd, between Hwy 32 and town of Butte Meadows, along N side of road in gravelly bank. 1219 Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC4611  Erythranthe cardinalis R. Carter 1996-6-26 460 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. up E side Berry Cr. 457 Comment
  CHSC94582  Erythranthe cardinalis Lowell Ahart 2006-9-11 13311 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
  CHSC33342  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, ca. 2.5 mi e of Lower Jct of Zink and Bald Rock Rd, 0.5 mi from the road. 975 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 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
  CHSC69724  Erythranthe floribunda Lowell Ahart 1997-10-24 7943 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
  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
  CHSC64222  Erythranthe guttata S. C. Morey 1983-8-1 653 Butte Chico meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  CHSC38707  Erythranthe nasuta Vernon Oswald 1983-3-26 209 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  SD7068  Erythranthe primuloides Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  SEINET10469668  Erythronium cliftonii Mary Susan Taylor 1981-3-31 Taylor 3460 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  CHSC32641  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3457 Butte N side of spur rd, ca. 1/10 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 5 mi ne of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  CHSC88617  Erythronium multiscapideum Linnea Hanson 1983-4-6 190 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  SEINET12048537  Erythronium multiscapideum Unknown 1984-1 11 Butte ca 1.8 mi S of Concow Res. & 100 yds W of Concow Rd 457 Comment
  UCSB63623  Erythronium multiscapideum Wolt, Terril 1970-3-21 Butte On E. side of Honey Run Rd. 2.5 miles N.E. of Humbug Rd Comment
  CHSC33662  Erythronium purpurascens R. A. Schlising; M. Merryman, J. Fuller, R. Banchero 1981-6-20 4097 Butte E of Inskip and W of Jones Meadows. 1856 Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 Comment
  CAS-BOT-BC402648  Eschscholzia caespitosa James Jokerst 1985-3-24 2169 Butte Near Serpentine Point 547 Comment
  JEPS117217  Eschscholzia caespitosa Lowell Ahart 2010-5-16 16696 Butte Basalt cliffs about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CAS-BOT-BC402962  Eschscholzia californica Lowell Ahart 1980-5-12 2262 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC21013  Eschscholzia californica M. S. Taylor 1975-10-4 962 Butte On s edge of Kunkle Reservoir, ca. 50 ft e of Pentz-Magalia Hwy, ca. 1mi s of Paradise. 609 Comment
  UC85492  Eschscholzia californica Mrs. R. M. Austin Apr., 1896 86 Butte near Chico Comment
  CHSC1203  Eschscholzia californica subsp. californica M. Anthony 1962-4-20 Butte Bidwell Park. 60 Comment
  CHSC27672  Eschscholzia lobbii Robert A. Schlising 1978-4-23 3224 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE crossing of Mud Creek. Comment
  CHSC30972  Eschscholzia lobbii Joann Lacey 1979-3-16 5 Butte Ca. 1.1 mi ne of jct of Humboldt Rd. and Stilson Canyon Rd., ca. 3.9 mi ne of Chico. 129 Comment
  CAS-BOT-BC419508  Eschscholzia lobbii Lowell Ahart 1980-4-30 2129 Butte Along Swedes Flat Road, near Bangor 320 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  JEPS115504  Eucalyptus camaldulensis Lowell Ahart 2009-6-12 15843 Butte On the east side of the deep pen, about 50 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET10452902  Eucalyptus camaldulensis Mary Susan Taylor 1982-5-22 Taylor 4494 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
  CHSC43617  Eucephalus breweri Vernon H. Oswald; Lowell Ahart 1987-8-5 3178 Butte Near Humboldt Peak. 2148 Comment
  UC202227  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte summit above Jonesville 2133 Comment
  CHSC60824  Euonymus occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1993-6-22 5564 Butte Long Ravine W of Stirling City, along Hendricks Canal ca. 0.25 mi S of the Diversion Dam. 950 Comment
  POM223073  Euphorbia crenulata H. F. Copeland 1923-4-21 626 Butte Chico Canyon. Comment
  CHSC613  Euphorbia lathyris K. Stern 1963-8-8 Butte Near Chico in an orchard. Comment
  CAS-BOT-BC202422  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte About 3 miles east of Chico Comment
  CHSC115348  Euphorbia peplus Lowell Ahart 2015-3-24 19959 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 100 yards south of where the trail comes out to the old road and Highway 32, on the west side of the old road, about 6 miles (air) northeast of Chico. 368 Comment
  CHSC5981  Euphorbia peplus M. MacArthur 1968-6-12 145 Butte Ca. 50 ft. NW of Biology Stockroom and 10 SW of PSA bld., Chico State College campus. 60 Comment
  UCD98881  Fallopia convolvulus E. M. Johnston 1915-1 W- 145 J Butte Biggs. Comment
  CHSC20093  Fatsia japonica M. S. Taylor 1975-4-8 450 Butte On ne side of Administration Building, California State University, Chico. 60 Comment
  JEPS120928  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  RSA712991  Festuca californica var. californica L. Ahart 2006-5-10 12626 Butte 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. 406 Comment
  CHSC82473  Festuca occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9744 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET10662355  Festuca occidentalis Lowell Ahart 2007-5-29 Ahart 13942 Butte T21N, R6E, Section 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trailhead which is 3/10 mi E of Bean Creek Road, about 2 miles (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  SEINET10831660  Festuca occidentalis A. Arthur Heller 1913-6-7 Heller 10791 Butte Near Stirling. 1036 Comment
  CHSC42918  Festuca rubra Lowell Ahart 1987-7-8 5810 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC59046  Festuca subulata Lowell Ahart 1992-6-26 6784 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CHSC68451  Fimbristylis autumnalis L. P. Janeway 1986-9-20 1878 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Fery Road bridge. 28 Comment
  UC1562318  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte 0.5 air mi sw of Humbug Summit (near the headwaters of the north branch of Willow Creek, 0.6 mi w of Humbug Road via the logging road just s of Cold Springs); Willow Creek 1969 Comment
  JEPS102419  Foeniculum vulgare Lowell Ahart 2001-6-13 8816 Butte 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) SW of Gridley. 22 Comment
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  SEINET10871289  Fragaria vesca subsp. californica Mary Susan Taylor 1976-3-16 Taylor 1026 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CAS-BOT-BC437082  Fragaria virginiana subsp. platypetala H. F. Copeland 1929-6-10 1206 Butte Jonesville 1524 Comment
  CAS-BOT-BC62939  Frangula californica subsp. tomentella Ella Dales Cantelow 1940-10-6 4292 Butte Buck's Lake to Oroville Road. Comment
  CHSC34146  Frangula purshiana L. Ahart 1981-9-15 3151 Butte Along edge of rd, ca. 1/2 mi n of Lost Creek Reservoir, along Pinkard Creek. 1100 Comment
  CAS-BOT-BC223386  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  SEINET10457422  Fraxinus dipetala Mary Susan Taylor 1980-4-18 Taylor 2522 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CHSC94613  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC49600  Fritillaria affinis Vernon H. Oswald 1990-1-31 4134 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. 274 Comment
  SBBG17373  Fritillaria eastwoodiae M. Vincent 1962-4-15 179 Butte Coutolenc Rd, 0.5 mi N of Magalia Comment
  RSA0000355  Fritillaria eastwoodiae J. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CAS-BOT-BC124017  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte Near Durham Comment
  CHSC12113  Fritillaria recurva M. F. Smith 1972-4-22 2 Butte Northeast corner of section 23, two (2) miles south of Feather Falls community. 914 Comment
  CHSC92557  Fritillaria recurva L. P. Janeway 2005-4-25 8366 Butte Northern High Sierra Nevada. Plumas National Forest; ridgetop northern end of Rocky Ridge; just above Rim Road (Ponderosa Way) 200 m east-southeast of junction with Concow Road; head of upper side drainage of Flea Valley Creek. 988 Comment
  CAS-BOT-BC508143  Fritillaria recurva C. C., Mrs. Bruce 1897-4-1 2025 Butte Forest Ranch Comment
  SD4930  Galium bolanderi E. B. Copeland 1930-7-16 476 Butte Jonesville, damp meadow 1500 Comment
  CHSC51913  Galium grayanum var. grayanum L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3076 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Cr House. 1935 Comment
  UC600426  Galium grayanum var. grayanum E. B. Copeland 1931-6-19 Butte at The Summit Jonesville Comment
  CDA6670  Galium mollugo Sterling O. Mattoon 1962-5-2 Butte Jesse Ranch, Nord Avenue at Bell Road, Chico. 0 Comment
  JEPS3305  Galium parisiense Roxana S. Ferris 1952-5-16 12475 Butte 5 mi s Cherokee (on road to Oroville) Comment
  SEINET10500638  Galium parisiense Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4061 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC55406  Galium porrigens var. tenue Charlie Crannell 1991-4-22 9 Butte 10.4 mi NE of Chico near Hwy 32. 243 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
  CHSC53981  Galium tricornutum Vernon H. Oswald 1991-4-24 4529 Butte Hicks Lane, ca. 0.8 mi north of Sycamore Creek, in north Chico. 60 Comment
  SEINET10836841  Galium triflorum Mary Susan Taylor 1979-10-5 Taylor 2237 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC45675  Gamochaeta argyrinea Vernon Oswald 1986-5-12 2031 Butte Northeast side of Paradise Lake. 780 Comment
  CHSC108849  Garrya fremontii Lowell Ahart 2012-2-22 17755 -A Butte On the north side of the Guardian trail, about 100 yards west of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. 426 Comment
  CAS-BOT-BC282604  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville Comment
  CHSC109651  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the sides of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-3/8 miles (air) northeast of Chico. 220 Comment
  UCD66563  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  JEPS114971  Gastridium ventricosum Lowell Ahart 2008-5-21 14780 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
  JEPS102831  Gayophytum racemosum Vernon H. Oswald 2001-7-16 10051 Butte Butte Creek House Ecological Reserve east-southeast of Jonesville. 1775 Comment
  CHSC108762  Genista monspessulana L. P. Janeway 2011-5-2 10249 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CHSC3210  Genista monspessulana Susan Carrauthers 1966-4-23 139 Butte Ca. .5 mi. N of city of Magalia. Comment
  SEINET8263330  Genista monspessulana Richard R. Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road. 1000 Comment
  POM193354  Gentiana simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. 1500 Comment
  JEPS121303  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards W of the old road, W of the first area to park, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC52025  Geranium dissectum Mark Loy 1980-4-8 16 Butte Ca. 5 mi N of Oroville, 7.2 mi N of Table Mt. Rd, ca. 100 yards W of Cherokee Rd. 365 Comment
  CHSC48845  Geum macrophyllum Vernon Oswald 1984-6-7 1268 Butte Calif. Hwy 32, 1.2 mi n of Chico Creek Bridge. On the edge of a spring. 1109 Comment
  RSA29020  Gilia capitata Lincoln Constance 1941-5-28 2827 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC4356  Gilia capitata subsp. mediomontana R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  CHSC46391  Gilia capitata subsp. mediomontana Lowell Ahart 1989-5-29 6312 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  JEPS108861  Gilia capitata subsp. mediomontana Lowell Ahart 2006-5-19 12637 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
  RSA712994  Gilia capitata subsp. mediomontana L. Ahart 2006-5-19 12637 Butte 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. 406 Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  JEPS98428  Gilia capitata subsp. pedemontana Lowell Ahart 2000-5-31 8416 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  SEINET10869729  Gilia leptalea Mary Susan Taylor 1978-7-18 Taylor 1688 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC45947  Gilia tricolor Lowell Ahart 1976-4-14 1063 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC90052  Gilia tricolor Peggy Fain 1991-4-21 20 Butte Ca. 2 km. E. of Richardson Springs Hotel, Musty Buck Preserve. 213 Comment
  RSA469706  Gilia tricolor J. P. Smith, J. O. Sawyer 1973-4-14 6049 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico Comment
  UC880189  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CAS-BOT-BC266591  Githopsis pulchella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC266583  Githopsis pulchella A. A. Heller 1937-5-31 s.n. Butte Just W of Jarboe Pass on the Feather River Highway about 20 miles from Oroville 609 Comment
  CHSC31948  Githopsis specularioides J. D. Jokerst 1979-5-1 1220 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC60971  Githopsis specularioides Lowell Ahart 1993-6-20 6997 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC113543  Glinus lotoides Lowell Ahart 2014-9-23 19869 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
  RSA713012  Gnaphalium luteoalbum L. Ahart 2005-12-11 12511 Butte Rice Experiment Station between the Main Ditch ad Stine Lateral, on the N side of Hamilton Road, 1/4 mile E of Riceton Hwy 2.25 miles air E of Biggs. 30 Comment
  CHSC116747  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC33643  Gnaphalium palustre M. Merryman; R. A. Schlising 1979-9-23 49 Butte SW of Chico, just e of Ord Ferry and Sacramento River. On riverbank. 30 Comment
  CHSC97727  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC103931  Gratiola ebracteata Lowell Ahart 2010-5-16 16686 Butte On the bottom and sides of drainages and vernal pools, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC112891  Gratiola ebracteata Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  UCR64621  Hackelia californica H. F. Copeland 1930-7-20 1313 Butte Jonesville 1524 Comment
  CAS-BOT-BC282857  Hainardia cylindrica Lowell Ahart 1974-6-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC31715  Hainardia cylindrica L. Ahart 1974-6-3 464 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD20439  Hamamelis mollis John Gross 1982-12-27 HN 144 Butte Butte County, at Lake Oroville, beside Berry Creek. Comment
  CHSC86593  Hamamelis vernalis L. P. Janeway; John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  JEPS105662  Hedera helix L. P. Janeway, Gavin Blosser 2003-9-3 7972 Butte Northern High Sierra Nevada. Along southwest edge of Ponderosa Reservoir 185 m south of Ponderosa Dam (South Fork Feather River). Around disintegrating structure 299 Comment
  SEINET10839194  Helenium puberulum Mary Susan Taylor 1979-10-13 Taylor 2255 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. Comment
  CHSC11823  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville, at 'the Summit'. 2150 Comment
  CAS-BOT-BC305516  Helianthus bolanderi William Anderson 1964-8-16 s.n. Butte Butte Creek Comment
  CHSC13813  Heliotropium curassavicum K. R. Stern 1972-9-19 3778 Butte Field, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC116003  Heliotropium europaeum Lowell Ahart 2015-10-9 20542 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC27212  Hemerocallis P. Moyer 1972-6-5 214 Butte S bank Chico Creek, between L. S. and Gus Magnolis Bridge, CSUC campus. 60 Comment
  CAS-BOT-BC309788  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte Near Chico Comment
  UC186058  Hemizonia congesta subsp. luzulifolia A. A. Heller 1913-10-7 11147 Butte 8 mi n Oroville (Table Mountain Olive Ranch) 121 Comment
  CHSC50827  Herniaria hirsuta subsp. hirsuta Vernon Oswald 1990-7-17 4362 Butte Paradise Lake, ca. 3 miles north of Magalia. At the culvert on Coutolenc Creek. 777 Comment
  POM36296  Hesperevax caulescens C. C. Bruce 1897-06 2112 Butte Fields Comment
  UC134866  Hesperevax caulescens Mrs. R. M. Austin 1896-5-1 685 Butte Comment
  SD40685  Hesperocyparis macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Butte Sierra Nevada Foothills, at Magalia 700 Comment
  UC867721  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte low hills 8 mi n Oroville Comment
  JEPS127025  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  POM319115  Hesperolinon micranthum Patricia Wilder 1971-6-23 5183 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  SEINET10837521  Hesperolinon micranthum Mary Susan Taylor 1980-5-15 Taylor 2637 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET10903214  Hesperolinon micranthum Mary Susan Taylor 1978-5-6 Taylor 1575 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA285912  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. Comment
  UC2062461  Heteranthera limosa Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16444 Butte Rice Experiment State NW of Biggs, drained field at NE corner of Hamilton & Riceton roads. Comment
  CHSC54577  Heteranthera rotundifolia Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6669 Butte In a rice field, about 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. 30 Comment
  CHSC113493  Heterocodon rariflorum Lowell Ahart 2014-7-10 19630 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 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
  SEINET10460736  Heterocodon rariflorum Taylor 1981-4-28 Taylor 3567 Butte North side of Road 23N28.2, in loop of the road, about 1.2 miles west of Chino Creek, about 4 air miles east of Jarbo Cap, about 23 air miles northwest of Oroville. T22N R5E NW/SW Sec. 21 Berry Cr. quad. 930 Comment
  CAS-BOT-BC143632  Heteromeles arbutifolia Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC310277  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mile above Pentz on the Paradise grade Comment
  CHSC29803  Heterotheca oregona var. compacta M. S. Taylor 1979-10-2 2210 Butte Sacramento River, at Chico Landing, off River Rd, ca. 5 mi w of Chico. 30 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
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC60607  Hoita macrostachya L. P. Janeway 1992-6-13 4234 Butte Along Piute Drive, ca. 1/4 mi east of Dark Canyon Road and ca 1/2 mi south of Parkhill and Big Bend Road. 594 Comment
  SEINET11892047  Holodiscus boursieri Unknown 1981-1 2931 Butte Near dirt rd. to Forbestown Reservoir. Common 701 Comment
  CAS-BOT-BC150114  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville 2000 Comment
  CAS-BOT-BC281252  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1979-5-31 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC42916  Hordeum murinum subsp. leporinum Lowell Ahart 1987-7-3 5782 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC56635  Hordeum vulgare J. Lund 1980-4-28 Butte 0.3 mi south of Palermo on Hwy 99. 76 Comment
  CHSC74119  Horkelia californica subsp. dissita B. Castro 1998-7-28 811 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. Meadow at end of old dirt rd at E edge of old homestead site. Near eastern edge of meadow. 929 Comment
  RSA451653  Horkelia elata L. Ahart, P. Ahart 1984-5-28 4647 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca 16 mi NE of Oroville. 450 Comment
  CAS-BOT-BC143980  Horkelia fusca var. tenella H. F. Copeland 1920-8-2 205 Butte Jonesville Meadow 1219 Comment
  SEINET10497072  Hydrophyllum occidentale Mary Susan Taylor 1981-4-16 Taylor 3543 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC400828  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  SD7538  Hypericum concinnum Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC25282  Hypericum formosum var. scouleri M. S. Taylor 1977-7-15 1403 Butte Scattered in wet Montane Meadow, throughout Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  CHSC41258  Hypericum formosum var. scouleri S. C. Morey 1983-7-21 477 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC312931  Hypochaeris glabra Lowell Ahart 1980-5-4 2208 Butte Near Hurleton 600 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC45686  Hypochaeris radicata Vernon Oswald 1985-4-29 1728 Butte Bald Rock Rd. 0.3 mi e of Oroville-Quincy Hwy. 640 Comment
  UC725510  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte Paradise Comment
  SEINET263499  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte Ca. 15 miles E of Chico at jct of Hwy 32 and Sugar Pine Place 1000 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
  JEPS127565  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approximated 0.25 miles north of its intersection with Ponderosa Way. Forbestown 7.5' Quad. Comment
  CDA19115  Isatis tinctoria Harrie D. Riley, Ernie Simpson 2001-4-27 PDR 1170765 Butte Sacramento Valley; Vicinity of Chico. Approx 1/5 mi on E side of Mud Creek and N side of Hwy 32 0 Comment
  CAS-BOT-BC69902  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte E. of North Honcut Creek, on the Joie Osgood Ranch, about 1.5 mi. n. and 3 mi. e. of Honcut, about 12 mi. se. of 60 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
  RSA5202  Isoetes melanopoda E. B. Copeland 1903-5-30 3281 Butte Unspecified Comment
  CHSC30017  Isoetes nuttallii L. Ahart 1980-5-17 2271 Butte 1/8 mi se of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC30989  Isoetes nuttallii M. S. Taylor 1980-3-15 2382 Butte Ca. 1/4 mi s of Pentz rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CHSC46422  Isolepis cernua Lowell Ahart 1989-5-23 6270 Butte Pond, in Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC31450  Isolepis setacea L. Ahart 1980-7-29 2509 Butte In the gutter along Lower Forbestown Rd or Ponderosa Way, ca. 1/4 mi n of the jct of Forbestown Rd and Robinson Mill Rd, w of Forbestown. 228 Comment
  CHSC23691  Jensia rammii M. S. Taylor 1976-5-3 1102 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC33363  Juglans californica var. hindsii S. Posner 1972-9-20 Butte 2 ft. west of Nord Ave., 1/4 mile north of 1st Street, Chico. Comment
  CHSC49602  Juncus acuminatus Vernon Oswald 1985-5-20 1774 Butte Along Thermalito Afterbay near Hwy 162 ca. 1 mi e of Hwy 99. 35 Comment
  CHSC94561  Juncus acuminatus Lowell Ahart 2006-9-13 13326 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
  JEPS113878  Juncus acuminatus Lowell Ahart 2007-7-7 14263 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CHSC47530  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2214 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC96541  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  JEPS107944  Juncus bufonius var. bufonius Lowell Ahart 2005-5-2 11775 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS110163  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  JEPS122227  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  RSA0118937  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  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
  CHSC87193  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito. 48 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
  UC1250332  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte s of Oroville Comment
  SEINET10472434  Juncus capitatus Mary Susan Taylor 1978-5-7 Taylor 1601 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  RSA0118712  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC44443  Juncus dubius Lowell Ahart 1988-6-23 6072 Butte In the meadow, south of the intersection of Black bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  JEPS115641  Juncus dubius Lowell Ahart 2009-8-12 16292 Butte On dark wet soil or in shallow water, meadow, along small drainages, on the east side of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC30436  Juncus effusus subsp. pacificus L. Ahart 1980-7-29 2506 Butte Along edges of road in gutters. Lower Forbestown Rd (Ponderosa Way) ca 1/4 mi N of intersection with Robinson Mill Rd, W of Forbestown. 750 Comment
  JEPS104090  Juncus effusus subsp. pacificus Lowell Ahart 2003-6-30 10335 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
  RSA726663  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte East side of Encina Grand Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 mile (air) west of Bloomer Hill. 809 Comment
  CDA39194  Juncus ensifolius T. C. Fuller 1962-7-12 9203 Butte 2 miles east of Butte Meadows. 0 Comment
  SEINET11787184  Juncus howellii Unknown 1983-1 4294 Butte along stream that flows into Butte Creek, 1 mi E of Butte Meadows 1450 Comment
  SEINET10472448  Juncus leiospermus Lowell Ahart 1984-5-7 Ahart 4589 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  SEINET10472451  Juncus leiospermus Mary Susan Taylor 1980-5-15 Taylor 2630 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET10472452  Juncus leiospermus Lowell Ahart 1984-4-6 Ahart 4543 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, ca. 2 miles S of Paradise, east side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CAS-BOT-BC110147  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-18 1648 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS124227  Juncus leiospermus var. leiospermus Lowell Ahart 2015-3-27 19980 Butte About 3/8 mile northeast of Coal Canyon Falls, about 1 1/8 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  SBBG55177  Juncus leiospermus var. leiospermus B. Ertter, J. L. Strachan 1980-5-7 3309 Butte North Table Mtn, ca. 5 air mi N of Oroville 396 Comment
  CHSC44831  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1659 Butte Along the edges of the West Branch of the Feather River. Coon Hollow at its west end where forest service rd. 27N74 crosses the river. 1615 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
  UC600800  Juncus nevadensis H. F. Copeland 1930-7-25 Butte Jonesville Comment
  CHSC102598  Juncus occidentalis L. P. Janeway; B. Castro 2009-7-4 9842 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CHSC28665  Juncus orthophyllus J. D. Jokerst 1979-11-4 400 Butte At edge of creek in large meadow. 100 mets. SE. of intersection of Butte Cr. and Humbug Rd. (Butte Creek House). 1767 Comment
  CHSC57157  Juncus orthophyllus L. P. Janeway 1987-6-27 2340 Butte Canyon of Little Kimshew Creek; along road 0.9 mi north of the Concow Road. 1508 Comment
  JEPS114979  Juncus oxymeris Lowell Ahart 2008-6-13 14817 Butte E side of a small meadow, bottom of an old gold mined area, about 150 yds W of the cemetary, about 150 yds N of Oregon Gulch, about 10 mi (air) NE of Oroville 311 Comment
  CHSC100489  Juncus patens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15418 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC42386  Juncus tenuis Lowell Ahart 1987-5-27 5695 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UCSB63745  Juncus tenuis Ahart, Lowell 1998-6-3 Butte T20N, R4E, NE 1/4 Sec. 17; NW of the cow chute along Cherokee Rd; North Table Mtn; about 7 mi (air) north of Oroville 403 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
  CHSC109614  Juncus usitatus Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18105 Butte Along the horse trail, north of Table 25, about 20 yards south of Vallombrosa aveune, southwest of Madrone, Lower Bidwell Park, Chico. 70 Comment
  CHSC116023  Juncus usitatus Lowell Ahart 2015-10-16 20560 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC96941  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley. 24 Comment
  JEPS113743  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley 24 Comment
  RSA123366  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte 8 miles southeast of Chico on Neal Road 122 Comment
  UC1134266  Juniperus californica J. E. Sowder 1933-7-7 109 Butte Camel Mound Chico Quad., Camel Mound 609 Comment
  UC2026866  Juniperus lusitanica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18265 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. Comment
  POM202704  Keckiella breviflora subsp. glabrisepala J. H. Morrison s.n. Butte Durham. Comment
  NY790155  Keckiella breviflora var. glabrisepala F. W. Pennell 1940-6-4 25665 Butte Above Richardson Springs 243.8 Comment
  NY790276  Keckiella corymbosa J. V. Monachino 1952-7-23 s.n. Butte Oroville, at outskirts of the city on the Feather River. Comment
  UC889317  Kelloggia galioides A. A. Heller 1917-7-29 12870 Butte summit above Jonesville 2133 Comment
  JEPS115352  Kickxia elatine Lowell Ahart 2009-7-3 15991 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  JEPS95733  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  JEPS117272  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  SEINET10869044  Koeleria phleoides Mary Susan Taylor 1978-5-7 Taylor 1594 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  UC9457  Kumlienia hystricula Mrs. R. M. Austin and Bruce March 1898 1891 Butte Butte County Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  CAS-BOT-BC340448  Lactuca saligna Lowell Ahart 1978-9-28 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  SEINET10473868  Lactuca saligna Mary Susan Taylor 1977-8-16 Taylor 1443 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC46075  Lagophylla glandulosa J. D. Jokerst 1983-5-24 1775 Butte Adjacent to Highway 162, across the highway from Simmon's Rd., 0.9 miles north of the Bidwell Bar Bridge. Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  RSA11147  Lagophylla glandulosa C. B. Wolf, E. R. Johnson 1934-10-5 2120 Butte 11 miles from Oroville on road to Paradise, Sacramento Valley. 152 Comment
  RSA0060802  Lamium purpureum Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  CHSC31564  Lasthenia californica L. Ahart 1976-4-11 1056 Butte Vernal pools, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90582  Lasthenia californica C. A. Bordin 1983-4-14 13 Butte Ca. 4 mi e of Durham and 0.3 mi w of Hwy 99 to Durham Dayton Hwy and ne corner of Oro Chico Hwy intersection. 54 Comment
  SEINET10475350  Lasthenia fremontii Mary Susan Taylor 1974-3-26 Taylor 93 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  UCSB63630  Lasthenia fremontii Long, N. 1974-4-23 Butte Along side Cana Pine Road, ca. yards off Highway 99 and ca. 12.7 mi. NW of Chico Comment
  CHSC110444  Lasthenia glaberrima B. Castro 2007-3-29 1619 Butte Sacramento Valley. Ca 0.8 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd in area of grassland and scattered shallow vernal pools. 57 Comment
  CHSC30059  Lasthenia glaberrima R. A. Schlising 1980-4-27 3575 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 (e to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  UCD73064  Lasthenia platycarpha 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
  RSA767796  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 air miles northeast of Oroville 264 Comment
  RSA424763  Lathyrus latifolius Aaron Liston, M. Blumler 1987-4-24 659 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CAS-BOT-BC213289  Lathyrus sulphureus Frances Brown 1935-4-1 s.n. Butte Near Durham. Comment
  CHSC115430  Lathyrus sulphureus Ariana Gehrig 2013-4-30 Butte Paradise Lake, Magalia. Along pathway. 783 Comment
  CHSC103706  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  CDA4167  Lathyrus tingitanus T. C. Fuller 1967-6-1 15921 Butte West side of Highway 70 to Marysville, 2.5 miles south of Oroville. 0 Comment
  CHSC25280  Lavandula officinalis K. R. Stern 1977-6-25 Butte Comment
  JEPS120931  Lavatera cretica Lowell Ahart 2013-5-21 18702 Butte On the W side of Hwy 99E, 30 yards N of the W Rio Bonita Road, about 1 mile NE of Biggs. Comment
  CHSC101983  Layia fremontii Carl W. Hill 1980-4-12 8 Butte Ca. 0.5 mi E of intersection of hwy and Skyway, 2 mi SE of Chico, on N side of Skyway. 67 Comment
  CHSC35631  Layia fremontii R. E. Preston 1982-3-27 212 Butte SE corner of int Larkin Rd and Oro Dam Blvd, Oroville. 51 Comment
  CHSC45893  Layia fremontii Lowell Ahart 1974-4-11 365 Butte Vernal pool or swale, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC179642  Layia fremontii A. A. Heller 1914-4-14 11292 Butte 8 mi n Oroville Comment
  CHSC66460  Leersia oryzoides Vernon H. Oswald; Lowell Ahart 1996-6-10 7760 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 center of the W side of Tract 7.1, Sanctuary 1. 33 Comment
  CHSC52966  Lemna gibba Vernon H. Oswald 1991-2-23 4470 Butte Chico Sewer Treatment Plant on River Rd, ca. 4.5 mi w of Chico. In an irrigation ditch along the west boundary of the treatment plant. 39 Comment
  JEPS118322  Leontodon saxatilis subsp. longirostris Lowell Ahart 2011-5-1 17335 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville 42 Comment
  JEPS127008  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  SEINET13946707 Image available Lepechinia calycina T. A. Ranker, P. G. Trapp 1994-1 1615 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min map), along road; ca 1300 ft alt., T21N, R4E, SEC6 396 Comment
  CHSC101265  Lepidium chalepense Lowell Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley. 27 Comment
  CHSC492  Lepidium chalepense V. Holt 1946-4-20 Butte Chico, roadside. 45 Comment
  CHSC50653  Lepidium didymum Lowell Ahart 1990-5-28 6501 Butte Along the edges of Palm Avenue, about 1/12 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  CHSC35756  Lepidium pinnatifidum R. E. Preston 1982-6-9 298 Butte At the edges of a dirt road; ca. 1/2 mi nw of HQ, Gray Lodge State Wildlife Area, ca. 8 mi sw of Gridley. 20 Comment
  CHSC48337  Lepidium pinnatifidum Vernon Oswald 1983-6-28 784 Butte Graylodge Waterfowl Management Area near Parking Lot 16. On roadways in the refuge. Comment
  CHSC35634  Lepidium strictum R. E. Preston 1982-4-4 217 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  CHSC42701  Lepidium virginicum var. pubescens Lowell Ahart 1987-5-9 5601 Butte Along a wash, along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  JEPS94959  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte 1.5 mi n Bridge across West Branch of Lake Oroville (w side Hwy 70, just n of Rich Gulch Rd) 396 Comment
  CHSC41975  Leptochloa fusca subsp. fascicularis Lowell Ahart 1986-11-9 5456 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
  CHSC66175  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of Tract 1.1, Sanctuary II. 33 Comment
  UCD63845  Leptochloa fusca subsp. fascicularis H. L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CHSC36973  Leptosiphon acicularis L. Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC29964  Leptosiphon bolanderi R. A. Schlising 1980-6-1 3609 Butte S of Paradise at Kunkle Reservoir, off Pentz-Magalia Hwy. 440 Comment
  CHSC90798  Leptosiphon ciliatus Lowell Ahart 2005-5-2 11765 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC341784  Lessingia nemaclada John Thomas Howell 1959-9-26 35084 Butte Arch Rock, North Fork Feather River 457 Comment
  JEPS20646  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  CAS-BOT-BC342061  Lessingia virgata Lowell Ahart 1976-9-4 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC52001  Lessingia virgata B. Castro 1987-9-25 227 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  CHSC3864  Leucojum aestivum Gary Dutton 1966-3-16 121 Butte C. S. C., N. E. of science bld. Along Chico Creek. Comment
  POM195743  Leucophysalis nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC100835  Lewisia triphylla R. A. Schlising; R. Banchero 1981-5-20 4067 Butte E of village of Feather Falls on Lumpkin Ridge. Comment
  CAS-BOT-BC451601  Lilaea scilloides Lowell Ahart 1989-5-23 6240 Butte North of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  UCR231506  Lilium Anna M. Hurlbutt 2009-8-7 023 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  UC478545  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CAS-BOT-BC130702  Lilium pardalinum A. A. Heller 1928-6-16 14622 Butte Butte Meadows Comment
  CHSC49658  Lilium pardalinum subsp. shastense Vernon Oswald 1983-7-6 827 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  SD708  Lilium pardalinum subsp. shastense E. B. Copeland 1930-7-18 614 Butte Jonesville, along creeks and in damp woods. 456 Comment
  POM218984  Lilium washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville. 1600 Comment
  CHSC42196  Limnanthes alba John E. Hunter 1986-4-12 46 Butte Vacant lot within City of Chico, ca 75 m nw of the intersection of East Ave. and Ceanothus Ave. Vernal pool margin. 62 Comment
  CAS-BOT-BC110624  Limnanthes alba Lowell Ahart 1980-4-28 2113 Butte Peter Ahart Ranch, near Honcut. 50 Comment
  POM197061  Limnanthes alba H. F. Copeland 1929-5-4 1129 Butte Near Chico. Comment
  RSA700274  Limnanthes alba T. W, Henrich 2004-12-4 s.n. Butte Chico, Meghdadi Property in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  JEPS104300  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  SEINET6670265  Limnanthes alba var. alba C. T. Mason 1949-4-23 1252 Butte 7 miles south of Oroville, along the east side of State Highway 24 Comment
  POM253064  Limnanthes douglasii A. A. Heller 1938-4-14 15033 Butte On the flatened treeless surface of Table Mountain. Upper Sonoran Life Zone. 610 Comment
  POM282578  Limnanthes douglasii subsp. rosea J. W. Morrison 1928-05 s.n. Butte Oroville, Sierra Nevada Mt. Range, Feather River. 305 Comment
  CAS-BOT-BC45927  Limnanthes floccosa subsp. californica A. A. Heller 1917-4-15 12672 Butte Ten miles north of Chico 64 Comment
  CHSC54010  Limnanthes floccosa subsp. californica Vernon H. Oswald 1991-3-30 4476 Butte Hwy 149, 0.9 mi northwest of Hwy 70 at Wicks Corner, ca. 7 mi northwest of Oroville. In drainage on top of road cut on the south side of the highway. 80 Comment
  CHSC67542  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3238 Butte Doe Mill population N of Warfield Rd., E of Bruce Rd., W of Butte Creek Diversion Channel. On young fan deposits of Little Chico Creek. 76 Comment
  HSC93614  Limnanthes floccosa subsp. californica James D. Jokerst, M. S. Taylor 1980-3-20 487 Butte 50 m NW of Jct. of Bruce Rd. and Skyway, SE side Chico. Comment
  SD147476  Lindernia dubia Lowell Ahart 1980-8-16 2577 Butte Near Honcut. 60 Comment
  CDA42840  Linum bienne L. Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS118008  Linum bienne Lowell Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 42 Comment
  UC600471  Linum lewisii H. F. Copeland 1932-7-24 Butte w rim of Butte Creek drainage above Butte Creek Meadows (Jonesville); , Butte Creek drainage 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
  CHSC85004  Lipocarpha micrantha L. P. Janeway 2003-9-3 7974 Butte Northern High Sierra Nevada. A little below high water line on north side of South Fork Feather River arm of Lake Oroville, about 35 m west of the Enterprise Boat Ramp, about 1.6 km west-northwest of the north end of Enterprise Bridge. 268 Comment
  CHSC100799  Listera convallarioides R. A. Schlising; R. Banchero 1980-7-7 3847 Butte NE of village of Feather Falls, 2.2 mi N of Lumpkin-LaPorte Road, on road to Fall River Campground; shady roadside seep. 1051 Comment
  UC1594679  Listera convallarioides Lowell Ahart 1992-6-26 6780 Butte about 1/2 mi nw Merrimac (e side of camp); Rogers Cow Camp 1219 Comment
  CHSC3164  Lithophragma Dona Kingsford 1966-3-26 Butte Covered Bridge, 7 miles NE of Chico on damp hill side, Chico area. Comment
  CHSC50113  Lithophragma campanulatum Vernon Oswald 1990-5-12 4205 Butte Jonesville-Butte Creek House Trail, along the section between Scotts John Creek and Willow Creek. 1676 Comment
  UC1377728  Lithophragma parviflorum John Ingram 1960-4-6 506 Butte below Pentz Road about 1 mi n of junction with Nelson Bar Road s Paradise 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
  CHSC50645  Logfia filaginoides Lowell Ahart 1990-5-25 6480 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  CHSC116999  Logfia gallica Lowell Ahart 2016-6-4 20922 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC104821  Lolium temulentum Lowell Ahart 2010-6-1 16761 Butte Both sides of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 172 Comment
  CHSC42609  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  CDA38463  Lomatium marginatum T. C. Fuller 1962-5-17 8710 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC42623  Lomatium marginatum var. marginatum Vernon Oswald 1985-6-15 1835 Butte Black Bart Rd. ca. 1 mi se of Lampkin Rd. 640 Comment
  CHSC42632  Lomatium utriculatum Vernon Oswald 1986-4-29 1987 Butte Concow Rd. 1.1 mi sw of Ponderosa Way (Rim Rd.). 853 Comment
  CHSC94926  Lomatium utriculatum K. Lang; Classmates 2005-3-1 Butte Table Mountain. Comment
  RSA132615  Lomatium vaginatum Copeland 1903-5-2 3252 Butte Chico Comment
  CHSC115689  Lonicera hispidula Emily Meigs Doe 2015-5-12 28 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.75 mi. (air) NW of Forbestown. Roadside of Rd. 19N19, ap-proximately 750 ft. NE of its junction with Ponderosa Way. 746 Comment
  SEINET8056664  Lonicera hispidula M. J. Williams 1984-5-25 84- 34 -1 Butte Feather River Canyon, Hwy 70, 1.5 mile W of Poe Power Dam. 457 Comment
  CAS-BOT-BC240687  Lonicera interrupta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC40315  Lonicera interrupta Lowell Ahart 1985-6-17 5065 Butte 120 yards south of the dirt road, Lumpkin Ridge, 11/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CAS-BOT-BC200897  Lotus John Thomas Howell 1976-4-1 51523 Butte Table Mountain, 4 to 5 miles north of Oroville Comment
  JEPS117151  Lotus humistratus Lowell Ahart 2010-4-30 16594 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
  RSA406234  Lotus oblongifolius var. nevadensis M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CDA27290  Lotus oblongifolius var. oblongifolius Vernon H. Oswald & Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mile north of Four Trees-Coyote Gap Road. Comment
  CDA13883  Lotus pinnatus G. F. Hrusa, T. D. Wilfred 1997-5-7 13741 A Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  RSA594175  Lotus unifoliolatus S. O. Mattoon 1978-9-21 44 Butte Southern Cascade Mtns: Ponderosa Way Forest Road at Middle Fork, Butte Creek, 5 air miles NW of Maglia. 671 Comment
  SBBG128781  Ludwigia decurrens E. Padgett 2014-9-12 Butte Sacramento Valley, agricultural fields between Richvale and Hwy 162, E of Midway, next to rice fields 26 Comment
  UC204453  Ludwigia palustris A. A. Heller 1914-8-13 11683 Butte hills 8 mi. n. Oroville Comment
  UC1191767  Ludwigia peploides subsp. peploides Herbert L. Mason and Verne Grant 1946-8-14 13019 Butte canal near big pond on Sacramento Outing Club; Butte Sink, Sacramento Outing Club Comment
  CHSC93351  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. 548 Comment
  RSA0065261  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  CHSC115452  Lupinus albifrons M. Sutton; C. Yasuda, S. Luse 2013-4-9 23 Butte Centerville Flumes. 350 Comment
  JEPS108562  Lupinus andersonii L. P. Janeway, Matt Brown, B. Castro, Samantha Mackey Hillaire 2005-6-21 8427 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Lockerman Creek and Cedar Creek, 1.4 km northeast of confluence of Lockerman and Camp Creeks 1201 Comment
  UC1129534  Lupinus arbustus P. L. Johannsen 1936-7-21 953 Butte 1/2 mi e Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  SEINET12154427  Lupinus aridus Unknown 1890-1 s.n. Butte Comment
  SEINET10484853  Lupinus bicolor Barbara J. Ertter, Jeffrey Strachen; Lowell Ahart 1980-5-7 Ertter 3306 Butte North Table Mountain ca 5 airmiles north of Oroville, flat-topped basalt butte, near parking area. 396 Comment
  SEINET10970223  Lupinus bicolor subsp. tridentatus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4123 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC115361  Lupinus bicolor var. tridentatus Lowell Ahart 2015-2-24 19961 Butte Along the south side of the poor road northeast of the Disc Golf Field, Humboldt Trail, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  JEPS115809  Lupinus bicolor var. tridentatus Lowell Ahart 2009-4-26 15619 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  SEINET11263971  Lupinus bicolor var. tridentatus Lowell Ahart 2002-4-14 9488 Butte Disturbed area between the railroad and the Midway Rd, 50 yards north of Nelson Dlavo Road, in Nelson.; 0 37 Comment
  CAS-BOT-BC323941  Lupinus latifolius subsp. longipes M. S. Taylor; L. Ahart 1981-8-16 4197 Butte Jones Meadow, ca 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  SEINET10489251  Lupinus latifolius subsp. longipes Mary Susan Taylor 1982-6-24 Taylor 4738 Butte T23n r5e center sec 30. Pulga sw quad. Corolla blue, stems 4-5 ft tall. E Side of flea mt ridge, ca 1 mi. Se of flea mt, 1.7 mi. Se of ponderosa way, ca 8.9 Mi. N of jarbo gap. With silene pratensis, verbascum thapsus, & viola Lobata. 1097 Comment
  UC726131  Lupinus microcarpus var. densiflorus A. A. Heller 1938-5-15 15094 Butte along the railroad near Gridley; near Gridley Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  SEINET12164075  Lupinus nanus E. J. Baker 1984-1 3 Butte E side of Hwy 70, 1miSE of intersection w/ Hwy 149, 6miNW of Oroville 58 Comment
  SEINET10484054  Lupinus nanus subsp. nanus Mary Susan Taylor 1981-4-14 Taylor 3528 Butte Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 137 Comment
  CHSC103726  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  JEPS104268  Lupinus pachylobus Lowell Ahart 2003-4-8 10050 Butte Along the dirt road, ca 1/8 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 326 Comment
  CHSC3924  Lupinus polycarpus Wayne O. Baum 1967-3-17 10 Butte In triangle area, on e. side of Cohasset Rd. and ca. 3.2 mi. n. of Chico. 60 Comment
  SEINET10970021  Lupinus polycarpus Karen D. Johnson 1978-4-16 Johnson 2 A Butte East side of Cohasset Rd. at Lassen Ave., 3 mi. N of Chico. 61 Comment
  SEINET10937164  Lupinus polyphyllus subsp. superbus Mary Susan Taylor 1977-7-15 Taylor 1418 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  POM219418  Lupinus sellulus var. artulus E. B. Copeland 1931-7-3 651 Butte Jonesville, Colby Canyon. 1600 Comment
  CHSC2373  Lupinus stiversii R. Carter 1965-6-1 219 Butte Found ca. 30 mi. E of Oroville on Bald Rock Rd., .2 mi. E of intersection with Zinc Rd., on S side of road. 883 Comment
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 Comment
  SEINET10452165  Lupinus vallicola Mary Susan Taylor, L. Hanson 1981-4-30 Taylor 3572 Butte T19N R5E ne sec 13, Forbestown quad. NW corner of jct of Forbestown Rd and Lumpkin Rd (Feather Falls turnoff), ca. 10 air mi E of Oroville. 1800 ft. 549 Comment
  RSA113235  Lupinus vallicola subsp. vallicola E. K. Balls, Lee W. Lenz, B. K. Balls 1955-5-13 20684 Butte 0.5 mi. s. of Paradise on road from Oroville to Magalia. 427 Comment
  CHSC29250  Luzula cascadensis M. S. Taylor 1978-7-18 1719 A Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Junction, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, ca. 2 mi sw of Jonesville. 1524 Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  JEPS121938  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC600796  Luzula comosa var. laxa H. F. Copeland 1930-7-25 Butte Jonesville Comment
  CAS-BOT-BC441209  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 4091 Butte About 2 mi. E of Bidwell Bar Bridge Comment
  CHSC110451  Luzula subsessilis L. P. Janeway 2013-5-20 11113 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  CHSC112442  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards east of the intersection of Forbestown Road and the Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CDA30014  Lycium barbarum L. Ahart 2009-7-4 16000 Butte At parking lot 32, Gray Lodge Waterfowl Management Area, ~ 6 air miles SW of Gridley. Comment
  CHSC38546  Lythrum hyssopifolia Vernon Oswald 1983-5-31 583 Butte Upper Bidwell Park, Chico, near the trail on the s side of Chico Creek between Day Camp and the power lines. 91 Comment
  UC872893  Lythrum hyssopifolia Lewis S. Rose 1939-6-11 39275 Butte 3 mi e of Honcut 45 Comment
  UCD103040  Lythrum hyssopifolia E. M. Johnston 1915-1 W- 134 J Butte Biggs. Comment
  CDA18068  Lythrum salicaria B. Villegas 1999-7-1 s.n. Butte W side of Hwy 70 at Oroville. 0 Comment
  CHSC34017  Lythrum salicaria L. Ahart 1981-7-18 2938 Butte On the bottom of a deep drain ditch along the edge of the Pacific Heights Rd, ca. 1/8 mi w of Hwy 70, ca. 3 mi sw of Oroville. 35 Comment
  SEINET10474799  Madia bolanderi Mary Susan Taylor 1977-8-17 Taylor 1469 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CAS-BOT-BC342654  Madia citriodora Bruce G. Baldwin; Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, south side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342723  Madia elegans John Thomas Howell 1962-6-16 37608 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  SEINET10938055  Madia elegans subsp. densifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4116 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC114147  Madia elegans subsp. vernalis G. K. Helmkamp; E. A. Helmkamp 2010-4-23 15935 Butte Sierra Nevada Mountains Foothills: Salmon Falls Road at the Salmon Falls crossing of the American River. 157 Comment
  CAS-BOT-BC344312  Madia exigua Lewis S. Rose 1963-6-2 63069 Butte 2 mi south of Pulga, North Fork of Feather River 579 Comment
  CAS-BOT-BC344321  Madia exigua John Thomas Howell 1962-6-15 37487 Butte Magalia 731 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC40481  Madia exigua Lowell Ahart 1985-5-15 4986 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC46956  Madia gracilis Lowell Ahart 1978-6-2 1750 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS98279  Madia gracilis Lowell Ahart 2000-6-29 8543 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CAS-BOT-BC342950  Madia gracilis L. P. Janeway 1995-6-19 4800 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of steep slope overlooking Frey Creek 1066 Comment
  SEINET10899356  Mahonia dictyota Mary Susan Taylor 1981-4-10 Taylor 3525 Butte T22N R4E sw sec 12, Pulga SW quad. 8 side of private rd. ca. 1/8 mi E of 4 mi N of Jarbo Gap on Hwy 70, ca. 19 air mi N of Oroville. Yellow Pine Forest; 3000 ft. 914 Comment
  CHSC46240  Maianthemum racemosum Pauleen Broyles 1987-7-19 1081 Butte Ca 7.2 km (air) NE of Inskip. 1770 Comment
  CHSC32380  Malacothrix floccifera J. D. Jokerst; R. A. Schlising 1980-7-2 927 Butte Junction of Garland Rd and Ponderosa Way, 2.4 mi SE of Hwy 32, ca 4 airline mi NNE of Forest Ranch. Comment
  CHSC62096  Malacothrix floccifera L. P. Janeway; Perrie Cobb, Linnea Hanson 1993-7-1 4411 Butte Plumas National Forest. Along French Creek Road 2.6 mi northeast of Stanwood Saddle and Oroville-Quincy Hwy. 902 Comment
  CHSC38548  Malva neglecta Vernon Oswald 1983-5-11 475 Butte Upper Bidwell Park, Chico, along the w margin of the Golf Course s of the footbridge. 91 Comment
  CHSC45330  Malvella leprosa Vernon Oswald 1983-6-28 782 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  CHSC44978  Marah fabacea J. Witzman 1987-3-7 6 Butte Along Butte Creek nr Humbug Rd. ca 3 mi n of jct with Skyway, se of Chico. 97 Comment
  UC890412  Marah watsonii A. A. Heller 1914-4-27 11328 Butte 8 mi n Oroville Comment
  CAS-BOT-BC67810  Marsilea vestita Lowell Ahart 1987-8-8 5856 Butte About 12 miles south-east of Oroville - along North Honcut Creek, about 2 miles north and 3 miles east of Honcut. 67 Comment
  CAS-BOT-BC67815  Marsilea vestita A. A. Heller 1914-7-31 11633 Butte Sacramento Valley about 6 miles northwest of Chico on Chico-Hamilton Road Comment
  SEINET10530355  Marsilea vestita Mary Susan Taylor 1975-10-4 Taylor 958 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  SEINET10834130  Marsilea vestita Mary Susan Taylor 1980-8-15 Taylor 3253 Butte T21N R2E nw sec 36, Hamlin Canyon quad. Pentz vernal pool, 0.4 mi SE of jct of Pentz (Benum) Rd, and Hwy 99, ca. 10 mi S of Chico; Valley Grassland. With E. Pierce. 55 Comment
  JEPS107275  Matricaria discoidea Lowell Ahart 2005-4-18 11731 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC25479  Matricaria occidentalis L. Ahart 1977-4-25 1320 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC3950  Meconella californica E. P. Parreno 1967-3-26 Butte Upper Bidwell Park ca 400 yards NE of Chico Municipal Golf Course. Comment
  UCD95462  Meconella californica Dana J. LeNarz 1982-4-8 11 Butte 60m SE of Butte Creek, vic. Covered Bridge, ca. 9.7 km SE of Chico. 122 Comment
  JEPS87778  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Oregon City School House Oregon City (garden area at ne corner, about 7 mi n of Oroville) 365 Comment
  CHSC82435  Medicago polymorpha Lowell Ahart 2002-5-7 9622 A Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS122207  Medicago polymorpha Lowell Ahart 2014-4-25 19406 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  RSA32916  Medicago polymorpha A. A. Heller 1923-3-25 13737 Butte Rock Creek Comment
  POM24523  Medicago polymorpha var. brevispina C. C. Bruce 1897-05 1847 Butte [No location information provided.] Comment
  UCD106751  Medicago rigidula P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  RSA4654  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CAS-BOT-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CAS-BOT-BC269388  Melica californica L. W. Swift 1934-5-7 102 Butte Outside forest 731 Comment
  CHSC96858  Melica californica Lowell Ahart 2007-5-29 13924 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 598 Comment
  UCD87014  Melica californica A. A. Heller 1915-4-20 11860 Butte Butte County. 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  SEINET11688375  Melica californica Unknown 1985-1 4974 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CDA14056  Melica californica var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13703 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC61543  Melica geyeri Lowell Ahart 1993-6-26 7031 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CAS-BOT-BC262498  Melica torreyana John Thomas Howell 1962-6-16 37538 Butte Magalia 731 Comment
  CAS-BOT-BC262503  Melica torreyana A. A. Heller 1915-4-20 11859 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  CHSC93734  Melica torreyana Lowell Ahart 2006-5-19 12632 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
  CHSC94052  Melica torreyana R. D. Fischer 2005-4-30 726 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Grass growing on steep, north facing wooded slope. 518 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  SEINET10452218  Melilotus albus Mary Susan Taylor 1975-7-4 Taylor 830 Butte On S side of Big Chico Creek, at Five Mile Dam, Upper Bidwell Park, Chico. 91 Comment
  CHSC757  Mentha canadensis V. Holt; M. Underhill 1952-7-9 Butte 56 Comment
  JEPS95740  Mentha pulegium Lowell Ahart 1995-7-15 7591 Butte 12 mi S of Oroville (Peter Ahart Ranch; 2 1/4 mi N and 1/10 mi E of Honcut) 36 Comment
  CHSC76341  Mertensia ciliata L. P. Janeway 1999-7-17 6507 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CHSC52135  Micranthes bryophora L. P. Janeway; R. A. Schlising 1988-7-22 3060 Butte Shaded flat in woods on the SW slope of upper Coon Hollow. 1859 Comment
  CHSC108868  Micranthes nidifica Lowell Ahart 2012-3-23 17779 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC42857  Micranthes nidifica Lowell Ahart 1987-5-22 5664 Butte In a small wash, about 1/4 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  CHSC64220  Micranthes oregana S. C. Morey 1983-8-2 677 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SD116539  Microcala quadrangularis Barbara Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3294 Butte Peter Ahart Ranch; ca., 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  CHSC23462  Micropus californicus var. californicus J. R. Lee 1974-4-22 3 Butte Found 25 yds n of Skyway roadside 6 miles e of the Chico city limits. 152 Comment
  CHSC40484  Micropus californicus var. californicus Lowell Ahart 1985-5-15 4994 Butte West of a small stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  UC34479  Micropus californicus var. californicus F. Z. Hoffman 1898-3-19 Butte Chico Comment
  CHSC48185  Microseris douglasii subsp. douglasii Vernon Oswald 1988-5-2 3293 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the west fence line. 54 Comment
  SEINET10475279  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 Ahart 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  POM53412  Microseris lindleyi E. B. Copeland 1903-4-10 3028 Butte Chico Comment
  CHSC30357  Microsteris gracilis J. D. Jokerst 1979-3-5 1137 Butte Top of North Table Mt., 300 m NW of the intersection of E edge of section 17 and Cherokee Rd. 300 Comment
  POM196544  Microsteris gracilis subsp. gracilis H. F. Copeland 1929-6-12 1202 Butte Jonesville. 1524 Comment
  CHSC42967  Mimetanthe pilosa Lowell Ahart 1987-7-3 5770 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC75973  Mimetanthe pilosa Lowell Ahart; Vernon Oswald 1999-8-13 8133 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
  SEINET10570194  Mimulus bicolor Mary Susan Taylor 1986-5-6 Taylor 5619 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  POM252817  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico. 244 Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 Comment
  SEINET10570230  Mimulus glaucescens Mary Susan Taylor 1975-6-25 Taylor 796 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
  RSA535437  Mimulus layneae David M. Thompson 1988-6-8 937 Butte 0.2 mi E of Zinc Road (S jct) along Bald Rock Road. 750 Comment
  UC886302  Mimulus moniliformis A. A. Heller 1917-7-26 12829 Butte Butte Meadows 1280 Comment
  UCD122653  Mimulus nasutus J. Doty 1969-3-31 618 Butte on east side of Cohasset Road, ca. 8 miles north of Chico. Comment
  UC886324  Mimulus primuloides A. A. Heller 1914-6-22 11497 Butte Chico Meadows 1219 Comment
  RSA0116102  Mimulus primuloides var. pilosellus Lowell A. Ahart 2014-7-10 19614 Butte About 100 yards south of Philbrook Road, about 1 miles (air) west of Philbrook Resrvoir. 1665 Comment
  JEPS121901  Mimulus primuloides var. primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA0116256  Mimulus primuloides var. primuloides Lowell A. Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS4245  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; Sierra 701 Comment
  RSA0116104  Mimulus torreyi Lowell A. Ahart 2014-4-13 19660 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  CAS-BOT-BC174594  Minuartia californica A. A. Heller 1914-3-18 11208 Butte Eight miles north of Oroville Comment
  JEPS110187  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 333 Comment
  RSA715728  Minuartia californica L. P. Janeway 2005-3-1 8341 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10537567  Minuartia douglasii Mary Susan Taylor 1981-5-15 Taylor 3738 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  UCSB46161  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 0.7 miles W of Lunt Road; from Highway 70 Comment
  CHSC48258  Moehringia macrophylla Vernon Oswald 1984-4-9 1127 Butte Feather Falls Trail near Frey Creek, 1.25 trail mi. from the trail head at the end of Bryant Ravine Rd. 560 Comment
  UC196297  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  SEINET12329572  Monardella lanceolata L. Ahart, Ahart, P. 1984-1 4652 Butte Along Hwy 40, now called Dark Canyon Rd, ca 2mi E of Old Yankee Hill, ca 16mi NE Oroville 450 Comment
  SEINET13948647 Image available Monardella odoratissima Lewis S. Rose 1955-1 55105 Butte 6 mi SE of Paradise on Pentz Road; 1400 ft alt. 427 Comment
  UC519258  Monardella odoratissima subsp. glauca H. F. Copeland 1930-7-20 Butte Jonesville Comment
  CAS-BOT-BC220454  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte On Highway #24, 23 miles east of Oroville Comment
  CHSC67986  Monardella sheltonii James D. Jokerst 1989-7-3 3123 Butte Hwy. 70 3.6 mi E of Pulga turnoff. Comment
  HSC93643  Monardella venosa B. Castro 1996-5-18 659 Butte 5.5 mi. SE of Paradise, in bottom of unnamed canyon just S of Neal Rd., 60 ft. N of creek channel directly under transmission lines 85 Comment
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Dec 20 2012
  CHSC65567  Monardella villosa subsp. villosa R. Banchero 1980-6-5 193 Butte Ca 4.3 mi N of Pinkston Cyn/ Hwy 70 jcn, near bridge on Hwy 70 over Feather River, on road edge above river and near a seep. 426 Comment
  UC454124  Monardella villosa subsp. villosa Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC600488  Montia chamissoi H. F. Copeland 1932-6-27 Butte in and at edge of Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows Comment
  JEPS104241  Montia diffusa Lowell Ahart 2003-7-12 10378 Butte Near a small stream, on the w side of Milsap Bar Rd, ca 2 1/2 mi (air) e of the Brush Creek Work Center, ca 17 mi (air) ne of Oroville. 1036 Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC31854  Montia fontana subsp. amporitana L. Ahart 1974-2-12 300 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC7113  Montia parvifolia S. Armantrout 1969-5-6 5 Butte Hwy. 70, first rest stop in Feather River Canyon, across road up trail 2 mi, below water fall. Bear Creek. Comment
  CHSC88641  Montia parvifolia Linnea Hanson 1996-5-15 363 Butte Plumas National Forest. Brush Creek Fire Station. 1066 Comment
  UCD101762  Montia parvifolia Brian Bagley 1981-5-17 26 Butte 2.5 miles south of Arch Tunnel on Hwy 70. Cresta Powerhouse Substation. 463 Comment
  CHSC45332  Morus alba Vernon Oswald 1987-4-9 2319 Butte Bidwell River State Park between the Washout (Chico Landing Site) and Big Chico Creek. 38 Comment
  CHSC6601  Morus alba M. MacArthur 1968-4-23 321 Butte NE of Aymer Jay Hamilton School play yard, Chico State College campus. 60 Comment
  RSA4652  Muhlenbergia filiformis E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC94531  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC11973  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. On bank of pond. 1750 Comment
  SD271  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville, on gravelly bank of pond, as water retreats during summer 1750 Comment
  UC600785  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Jonesville 1828 Comment
  CHSC45215  Muhlenbergia rigens Lowell Ahart 1977-10-19 1602 Butte On the banks 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
  CHSC90829  Myosotis discolor Lowell Ahart 2005-5-2 11756 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC55399  Myosurus minimus subsp. minimus L. P. Janeway 1991-5-1 3922 Butte Ca 1 mi south of Wyandotte and ca 1/4 mi west of Dunstone Drive. 182 Comment
  CHSC48456  Myriophyllum aquaticum Vernon Oswald 1987-5-3 2366 Butte East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  CHSC48458  Myriophyllum spicatum Vernon Oswald 1988-8-15 3690 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  JEPS102315  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte about 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, W side of North Honcut Creek) 38 Comment
  CHSC49674  Najas gracillima Vernon Oswald 1983-6-18 716 Butte Upper Bidwell Park, Chico, in Horseshoe Lake. Along the n side of the lake. 100 Comment
  POM219095  Navarretia capillaris H. F. Copeland 1928-8-18 374 Butte Neighborhood of Jonesville; near Butte Creek. 1524 Comment
  CHSC37313  Navarretia divaricata subsp. vividior L. Ahart 1982-6-4 3533 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC112682  Navarretia filicaulis Lowell Ahart 2013-7-1 18818 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
  JEPS18126  Navarretia filicaulis Rimo Bacigalupi with Howard Whisler 1957-7-26 6043 Butte along the Humbug Road 3.1 mi s of and below Nimshew (roadside cut in serpentine (same formation as that at Magalia-where this reaches the e side of Butte Canyon)) 365 Comment
  CHSC36714  Navarretia heterandra D. H. Ikeda 1980-5-11 360 Butte 0.7 mi s of intersection of Hwy. 99 and Pentz Rd. on e side of highway. Vernal pools. Comment
  RSA716151  Navarretia intertexta L. Ahart 2005-7-13 12147 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.5 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC34989  Navarretia intertexta subsp. propinqua R. A. Schlising; R. Banchero 1980-7-14 3893 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). Meadow/pasture. 1511 Comment
  SEINET10496828  Navarretia leucocephala Mary Susan Taylor 1986-5-6 Taylor 5623 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  CHSC66081  Navarretia leucocephala subsp. leucocephala Vernon H. Oswald 1996-5-23 7634 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a vernal pool in Tract 5, Sanctuary I. 32 Comment
  RSA715674  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-27 11814 Butte Peter Ahart Ranch, about 1.5 miles north and 1.2 miles east of Honcut, about 12 miles (air) southeast of Oroville 37 Comment
  UC1719863  Navarretia nigelliformis David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC36711  Navarretia pubescens D. H. Ikeda 1980-5-10 356 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  CHSC75393  Navarretia tagetina Jennifer Slater 1997-4-27 33 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  HSC38282  Navarretia tagetina Thomas W. Nelson, Jane P. Nelson 1976-5-10 2469 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC29399  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-6-17 3724 Butte N of Magalia and De Sabla along Skyway, ca 1.5 mi SW jct with Coutelenc Road at Lovelock. 780 Comment
  CHSC46821  Nemacladus capillaris R. A. Schlising 1981-6-16 4089 Butte E of Cohasset, 2.3 mi E of junction with Cohasset Road, on Vilas Road. 762 Comment
  CHSC101268  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC7093  Nemophila heterophylla Nancy Wiseman 1969-4-13 Butte 2 mi along Feather Falls trail 22 mi e of Oroville. Comment
  CHSC112214  Nemophila pedunculata Lowell Ahart 2013-4-20 18564 Butte Near fence corner, on the northeast corner of the intersection of La Porte Road and Dunstone Drive, about 2 1/2 miles (air) northeast of Honcut. 36 Comment
  JEPS107353  Nemophila pedunculata Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11678 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  POM193349  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville. 1650 Comment
  CDA42978  Nicotiana acuminata var. multiflora L. Ahart 2013-11-18 19279 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. Comment
  CHSC10544  Nicotiana glauca Lowell Ahart 1962-4-10 Butte Near Gridley. 36 Comment
  CHSC105957  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  CHSC29104  Odontostomum hartwegii M. S. Taylor 1980-4-27 2568 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  CHSC31849  Odontostomum hartwegii L. Ahart 1977-4-16 1306 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC98693  Olea europaea L. P. Janeway 2007-12-17 9226 Butte Northern Sierra Nevada Foothills. About 15 m east of the east edge of Thermalito Diversion Pool (the bed of the Feather River pooled at a constant 68 m elevation level), about 370 m north of the railroad bridge. At base of old abandoned railroad or road cutbank. 73 Comment
  SEINET10470798  Ophioglossum lusitanicum subsp. californicum Lowell Ahart 1984-2-18 Ahart 4496 Butte T17N R4E sec 1. Joie Osgood Ranch, ca. 4 miles NE of Honcut. Comment
  CAS-BOT-BC500245  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-17 s.n. Butte 2.5 mi W of Bangor, 1/2 mi S of Avocado Ave. and S of teh Blue Lead Mine 100 Comment
  CAS-BOT-BC500246  Orobanche uniflora subsp. occidentalis Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC113486  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA32030  Orthocarpus campestris A. A. Heller 1940-4-20 s.n. Butte About 1 mile south of the Oroville Y. This station is very near the place where Hartweg got the type, 'in pascuis vallis Sacramento.' Comment
  CDA1627  Ottelia alismoides G. D. Barbe, T. C. Fuller 1977-9-2 2334 Butte Drainage canal west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. 0 Comment
  POM86786  Oxalis albicans subsp. pilosa C. C. Bruce 1897-04 1852 Butte Butte Creek. Comment
  CAS-BOT-BC334336  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5088 Butte 100 yards S of the road to the Forbestown Res., S of the Forbestown Ditch, about 2.5 miles NE of Forbestown 883 Comment
  CAS-BOT-BC316891  Packera eurycephala var. lewisrosei John Thomas Howell 1959-9-26 35092 Butte Pulga Bridge, north fork Feather River Comment
  JEPS104825  Packera eurycephala var. lewisrosei Dean W. Taylor 1995-8-6 15385 Butte N end Rocky Ridge, 6 air mi E of Paradise, northern rim of North Fork Feather River canyon; Lassen National Forest 975 Comment
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Jun 15 2007
  CAS-BOT-BC10502  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC75573  Panicum acuminatum var. acuminatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada. Slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  CAS-BOT-BC253697  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte Bottom of North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC37106  Panicum capillare L. Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC83103  Panicum capillare Lowell Ahart 1983-7-29 4239 Butte Along the edge of the dirt road, about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  JEPS115064  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  UCD89510  Panicum capillare L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CDA13828  Panicum dichotomiflorum G. F. Hrusa, T. D. Wilfred 1996-9-5 13556 Butte Butte Basin; Occasional on wet, open bank of Butte Creek immed. below Western Canal District Dam. Comment
  RSA718155  Panicum dichotomiflorum L. Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  CHSC66462  Panicum dichotomiflorum subsp. dichotomiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7755 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC259622  Paspalum dilatatum Lowell Ahart 1982-10-15 3895 Butte Along the edges of N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  SEINET191202 Image available Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. Comment
  CHSC43277  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  CAS-BOT-BC202817  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 5 miles north-east of Oroville 609 Comment
  CHSC33892  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC34221  Paxistima myrsinites M. S. Taylor 1981-5-29 3811 Butte Vicinity of old mining claim ca bin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC11908  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC29979  Pectocarya pusilla Lowell Ahart 1980-5-17 2290 Butte About .5 mi SE of Hurleton, in bottom of wash SE of Oak Grove Cemetery. 600 Comment
  CHSC36082  Pectocarya pusilla Robert A. Schlising; Coleta Lawler 1981-4-13 4028 Butte 2.1 miles N of bridge over Butte Creek at Centerville; W side of Nimshew Ridge; roadside bank. Comment
  CDA41862  Pedicularis racemosa L. Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 (air) southwest of the Sly Creek Reservoir Dam. Comment
  CHSC39816  Pellaea andromedifolia Ruby Gist 1935-3-1 Butte Chico. Comment
  HSC66079  Pellaea andromedifolia M. S. Taylor 1980-3-30 2411 Butte Salmon hole, upper Bidwell Park, Chico 244 Comment
  CHSC40284  Pellaea brachyptera Lowell Ahart 1985-6-17 5053 Butte Lumpdin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC80740  Pellaea mucronata Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  CAS-BOT-BC67556  Pellaea mucronata Lowell Ahart 1966-2-25 s.n. Butte Honcut - Peter Ahart Ranch 45 Comment
  SEINET11713847  Pellaea mucronata Unknown 4 s.n. Butte no further locality Comment
  CHSC32636  Pellaea mucronata var. californica M. S. Taylor; L. Hanson 1981-4-2 3478 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  RSA408435  Penstemon M. M. Boney 1897-1 4222 Butte [No location information provided.] Comment
  RSA285683  Penstemon azureus subsp. angustissimus D. C. Michener 1980-8-4 3776 Butte Sierra Nevada. Talus slopes long CA 70 in open Pinus, chaparral transition ca 4 miles south of Pulga. Feather River Canyon Comment
  POM14699  Penstemon heterophyllus subsp. purdyi A. A. Heller, H. E. Brown 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  JEPS48314  Penstemon heterophyllus var. heterophyllus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 Butte Pulga Bridge, west side North Fork Feather River North Fork of Feather River, Pulga Bridge 472 Comment
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Nov 20 2007
  CHSC35219  Penstemon laetus var. leptosepalus M. S. Taylor 1981-5-7 3629 Butte N side of Ponderosa Way, 0.8 mi n of Sucker Creek bridge, ca. 4 air mi sw of Feather Falls. 365 Comment
  NY604521  Penstemon laetus var. leptosepalus Mrs. C. C. Bruce 06 1898 2415 Butte Forest Ranch Comment
  UC426948  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville 1550 Comment
  NY627278  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral 1645.9 Comment
  CHSC11884  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte Jonesville. 579 Comment
  UC1527283  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte about 1/2 mi sw Bald Mountain (about 4 1/2 mi ne of Stirling City); sw of Bald Mountain, ne of Stirling City 1615 Comment
  SEINET5329278 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1646 Comment
  CHSC31035  Penstemon rydbergii M. S. Taylor; R. A. Schlising 1980-7-6 3086 Butte N side of Old Humboldt Rd, just w of Butte Meadows Ranger Station. 1341 Comment
  CAS-BOT-BC239449  Penstemon rydbergii var. oreocharis Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy, Sierra Nevada Mt. Range, Feather River 1828 Comment
  CAS-BOT-BC330463  Pentachaeta alsinoides Rimo Bacigalupi; G. T. Robbins; Fran Chisaki 1956-4-19 5608 Butte Along the Oroville-Concow Road, 2.8 miles below (and S of) its junction with the Yankee Hill rd. 373 Comment
  CHSC23460  Pentagramma triangularis J. R. Lee 1974-4-15 1 Butte Found on n side of Upper Bidwell Park road w of Salmon hole and 4.3 mi from the Chico Municipal golf Course. 121 Comment
  CHSC28895  Pentagramma triangularis J. D. Jokerst 1980-1-29 436 Butte E of North Table Mt, 50 m SE of Condor Rd, 400 m N of its jct with Oregon Gulch Rd. 426 Comment
  CHSC111979  Pentagramma triangularis subsp. semipallida Lowell Ahart 2012-6-2 18136 Butte Along east side of a poor dirt road, about 100 yards north of Truex Rd., west of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. northwest of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC40223  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1984-7-2 1341 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  CHSC105535  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, open meadow like area in red fir forest, 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 Philbrood Reservoir. 1917 Comment
  CHSC113466  Perideridia lemmonii Lowell Ahart 2014-7-13 19667 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC40230  Perideridia lemmonii Vernon Oswald 1985-8-1 1919 Butte Jordan Hill Rd. between Concow Rd. and Magalia, 0.5 mi s of road to Sawmill Pk. 926 Comment
  CHSC40232  Perideridia lemmonii Vernon Oswald 1985-7-2 1875 Butte Humboldt Rd. 0.4 mi e of its jct. with the Skyway (Bull Hill Rd.) in Butte Meadows. 1325 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
  JEPS115269  Perideridia oregana Lowell Ahart 2009-6-30 15957 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC31065  Perideridia parishii subsp. latifolia M. S. Taylor 1978-7-19 1788 Butte On n end of Snag Lake between creek and Humbug Rd, ca. 3 mi s of jct of Humbug Rd and Scotts John Rd. 1920 Comment
  CHSC55252  Persicaria hydropiper Lowell Ahart 1991-9-14 6714 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CAS-BOT-BC418860  Persicaria hydropiperoides Lowell Ahart 1987-9-4 5881 Butte On the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  UCD99319  Persicaria hydropiperoides Herbert L. Mason; Verne Grant 1946-8-14 13027 Butte Sacramento Outing Club. Comment
  CHSC31170  Persicaria maculosa M. S. Taylor 1978-9-8 1883 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CHSC76290  Persicaria maculosa Lowell Ahart 1999-9-21 8270 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS124337  Persicaria maculosa Lowell Ahart 2015-10-16 20556 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC116135  Persicaria punctata Lowell Ahart 2015-11-7 20635 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CAS-BOT-BC419321  Persicaria punctata A. A. Heller 1914-7-15 11578 Butte Hills 8 miles north of Oroville Comment
  CHSC3836  Petrorhagia dubia L. E. Dunkel 1965-4-15 19 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge and ca. 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  JEPS114739  Petrorhagia dubia Lowell Ahart 2008-5-12 14759 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
  JEPS18179  Petrorhagia dubia Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5615 Butte 5.3 mi n Bangor (along road from Oroville to Bangor) 182 Comment
  CAS-BOT-BC134036  Phacelia cicutaria var. cicutaria M. S. Taylor; K. Tharp 1983-3-11 5228 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  CHSC101318  Phacelia egena Lowell Ahart 2009-4-22 15580 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
  CHSC30888  Phacelia egena J. D. Jokerst 1979-4-6 1183 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 Comment
  CHSC39112  Phacelia egena B. Castro 1982-4-9 13 Butte Rare, on steep e-facing hillside on w side of Pentz-Magalia Hwy, ca 12 mi ne of Oroville. 256 Comment
  JEPS115860  Phacelia egena Lowell Ahart 2009-4-22 15580 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
  RSA769601  Phacelia egena L. Ahart 2009-4-22 15580 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
  UC1228322  Phacelia heterophylla subsp. virgata L. R. Heckard 1952-6-20 320 Butte road bank about 2 mi above (ne) Pulga; canyon of the Feather River Comment
  UC1228320  Phacelia imbricata L. R. Heckard 1953-4-27 342 Butte along Feather River hwy just below Las Plumas Rd 182 Comment
  CHSC46242  Phacelia procera Pauleen Broyles 1987-7-26 1086 Butte Ca. 7.5 km ese (air) of Jonesville (where Humboldt Road crosses Jones Creek). In meadow near Willow Creek where Humbug Summit Road crosses. 1890 Comment
  UC478473  Phacelia racemosa E. B. Copeland Jul 11 1931-Jul 13 1931 684 Butte stony ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC38465  Phacelia ramosissima var. ramosissima Vernon Oswald 1983-6-13 670 Butte Upper Bidwell Park, Chico., ca. 200 ft s of the footbridge at the Golf Course. 91 Comment
  CAS-BOT-BC134035  Phacelia ramosissima var. ramosissima Charles Piper Smith 1914-7-2 2905 Butte Chico Creek foothills Comment
  CHSC8262  Phalaris caroliniana K. Henegar 1969-5-9 37 Butte 4 m N of Highway 162 on road Z. Rice lands. Comment
  CAS-BOT-BC259043  Phalaris lemmonii Lowell Ahart 1984-5-10 4600 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC10566  Philadelphus lewisii Lowell Ahart 1967-6-6 Butte Near Bidwell Bar. 213 Comment
  JEPS115611  Philadelphus lewisii Lowell Ahart 2009-5-23 15723 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
  UC1392744  Philadelphus lewisii R. F. Hoover 1968-5-29 11136 Butte Cohasset Road Comment
  JEPS87157  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow, ne of Concow Reservoir 1097 Comment
  CHSC35092  Phlox diffusa R. A. Schlising; R. Banchero, J. Fuller, M. Merryman 1981-6-20 4100 Butte NE part of county, E of Inskip and E of Jones Meadow. 1856 Comment
  UC201131  Phlox diffusa unknown 1892-6-28 Butte Jonesville Comment
  UC880345  Phlox gracilis A. A. Heller 1917-4-15 12677 Butte 10 mi n Chico 64 Comment
  UCD102031  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magnolia, Sierra Nevada. 731 Comment
  SEINET12230317  Phoradendron bolleanum M. S. Taylor 1975-1 918 Butte 1/2 mi N of Magalia, 50 ft. E of the Skyway 610 Comment
  CHSC3253  Phoradendron densum Virginia Hagaman 1966-4-17 121 Butte 3.5 miles north of Magalia. Comment
  HSC100733  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 210 Comment
  CHSC31465  Phoradendron villosum M. S. Taylor 1981-1-5 3373 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC42333  Phyllostachys bambusoides B. C. Willingham 1968-6-3 Butte Plant Introduction Station, Chico. Purchased in Nagasaki, Japan. Comment
  SBBG121212  Physalis lancifolia L. Ahart 2007-8-19 14494 Butte N strand of a reservoir, ca. 2.25 mi (air) SE of Honcut ca. 13 mi (air) SE of Oroville 49 Comment
  CHSC76344  Phytolacca americana L. P. Janeway 1999-7-12 6502 Butte Campus of California State University, Chico; north side of Big Chico Creek in weedy landscaping on the north side of Holt Hall. 59 Comment
  CHSC89438  Phytolacca americana Lowell Ahart 2004-9-28 11405 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
  UC1563297  Phytolacca americana unknown 1990-9-21 6598 Butte about 2 1/2 mi n and 1/4 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
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Dec 3 2014
  CHSC61203  Pilularia americana Lowell Ahart 1993-4-8 6930 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  NY34619  Pinus attenuata R. C. Walsh 1987-7-7 297 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC41469  Pinus contorta Lowell Ahart 1986-5-20 5275 Butte West of the road on the west side of the Sly Creek Reservoir, about 1 mile north of the Sly Creek Dam. 1097 Comment
  UC398884  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville Jonesville (in wet cold places most often about meadows) 1550 Comment
  NY61630  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC78935  Pinus monticola A. A. Heller 1915-6-26 12033 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC79016  Pinus ponderosa John Thomas Howell 1962-6-15 37431 Butte Magalia 731 Comment
  SEINET10530835  Pinus sabiniana Melvin L. Conrad, Douglas G. LeDoux 1973-6-5 Conrad 7033 Butte 2.6 mi W of Paradise on Chico Road. Digger Pine with deliquescent branching. 610 Comment
  CHSC54350  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC65819  Piperia michaelii Tim Devine; Wes Dempsey 1995-5-6 Butte Just east of Altantina Drive and about 0.3 mi east of Hwy 32 between Ten-mile House and Fourteen-mile House. 560 Comment
  UC600642  Piperia unalascensis H. F. Copeland 1931-6-9 Butte near Jones and Willow Creeks junction; Jonesville 1524 Comment
  CHSC100502  Pittosporum tobira Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15421 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10529819  Pityrogramma triangularis Mary Susan Taylor 1981-3-24 Taylor 3439 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  SEINET10529820  Pityrogramma triangularis Mary Susan Taylor 1984-4-6 Taylor 5401 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC90979  Plagiobothrys austiniae Lowell Ahart 2005-5-11 11809 Butte Margins of vernal pools, about 300 yards southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 359 Comment
  JEPS119688  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte About 200 yards southwest of the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  RSA20871  Plagiobothrys austiniae C. B. Wolf 1937-3-29 8332 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  CHSC101285  Plagiobothrys fulvus Lowell Ahart 2009-4-17 15544 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC116950  Plagiobothrys fulvus Matthew Forster 2013-2-27 Butte Middle Trail in Upper Bidwell Park, 1 mile from Horseshoe Lake. 113 Comment
  UC725762  Plagiobothrys fulvus A. A. Heller 1926-4-19 13922 Butte along road to Pentz about 2 mi from junction with the Chico-Oroville road Comment
  CHSC29035  Plagiobothrys fulvus var. campestris J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 546 Butte Table Mountain, 100 mets. N. of intersection of Cherokee Rd. and E. edge of section 12. Comment
  CHSC29980  Plagiobothrys glyptocarpus Lowell Ahart 1980-5-12 2248 Butte Peter Ahart Ranch, ca 1 mi N and 2.25 mi E of Honcut; in small wash in pasture. 50 Comment
  CHSC31252  Plagiobothrys glyptocarpus R. A. Schlising 1980-5-18 3591 Butte NE of Chico Airport and WSW of Richardson Springs at vernal pool on Cohasset Ridge. 249 Comment
  SEINET10497373  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 Ahart 4590 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC93349  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2006-5-3 12566 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC28992  Plagiobothrys greenei J. D. Jokerst 1980-3-27 522 Butte N of Chico Muni Airport, E of Cohasset Hwy. 97 Comment
  UC725292  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte along the road near Wick's Corner n Oroville Comment
  UCD120869  Plagiobothrys greenei L. Ahart 1979-5-11 1870 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS121921  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10497551  Plagiobothrys leptocladus Mary Susan Taylor 1982-4-28 Taylor 4349 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
  CHSC90101  Plagiobothrys nothofulvus Rebecca L. Hill 1990-3-21 1 Butte Ca. 20 yds se of jct of Oroville Chico Highway and Mesa Road, on the e side of Oroville Chico Hwy, ca. 5.5 mi of Chico. 47 Comment
  JEPS21212  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte low treeless hills 8 mi n Oroville Comment
  UCD80166  Plagiobothrys nothofulvus CNPS SN Foothill Team 2005-4-6 SNFN 0099 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, Oroville. Stand on mesa NW of parking area, approximately 1 mile; 123 degrees east of south fork of Coal Canyon, extends to west and north of releve location. 383 Comment
  SEINET10497552  Plagiobothrys nothofulvus Mary Susan Taylor 1973-1 Taylor 37 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC31250  Plagiobothrys stipitatus Jeffrey D. Prouty 1979-4-18 213 Butte H. Wurlitzer Ranch, ca 10 mi N of Chico. In pasture and along roadside ca 500 m N of Singer Creek, E side of Cana-Pine Creek Road. 57 Comment
  CHSC48002  Plagiobothrys stipitatus Vernon Oswald 1983-5-6 434 Butte Nord-Cana Hwy. 0.5 mi n of Bennett Rd. Along the edge of a vernal pond. Comment
  UC881347  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  UC52288  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC52004  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1979-4-9 3357 Butte E of Chico, at roadside of dirt road formerly named Bruce Road, just north of Skyway. 76 Comment
  JEPS104318  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-5-28 10229 Butte Center of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  SEINET3449087  Plagiobothrys stipitatus var. micranthus Unknown 2003-5-28 10229 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain west of Cherokee Road, about 100 feet west of Hendricks ditch, about 1.75 miles west of the iron gate and fence 270 Comment
  CHSC115211  Plagiobothrys tenellus Lowell Ahart 2015-4-27 20079 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iorn gate aling Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC28590  Plagiobothrys tenellus M. S. Taylor 1974-3-3 68 Butte On Burton's Mesa, ca. 3 mi e of Chico on the Skyway to Paradise. 60 Comment
  CHSC35324  Plagiobothrys tenellus M. S. Taylor; K. Tharp 1982-4-8 4290 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  RSA32734  Plagiobothrys tenellus A. A. Heller 1938-4-14 15037 Butte Between Pentz and Cherokee. Comment
  SEINET12334063  Plantago bigelovii L. R. Perry 1988-1 9 Butte vic. Salmon Hole, ca 5 mi E of Chico Municipal Golf Course 122 Comment
  CHSC103994  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  CHSC94050  Plantago coronopus R. D. Fischer 2005-5-18 724 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the ridge top at the south end of Humboldt Trail on the old roadbed. 426 Comment
  JEPS118250  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
  JEPS119595  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about one mile (air) northeast of Chico. Comment
  CDA6609  Plantago virginica L. Ahart 2000-5-17 8366 Butte On the southeast margin of the Thermalito Afterbay, west of the poor dirt road, south of the Cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. Comment
  CHSC106874  Plantago virginica Lowell Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 58 Comment
  CHSC1212  Platystemon californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC31206  Plectritis ciliosa M. S. Taylor 1980-4-16 2488 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp, ca. 1 mi s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC115485  Plectritis congesta subsp. brachystemon L. P. Janeway; Emily Meigs Doe 2015-4-21 11666 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  SEINET10449169  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 Ahart 5148 Butte South of Willow Creek, about 100 m south-west of 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. Comment
  CHSC113108  Poa annua Lowell Ahart 2013-11-13 19245 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
  CHSC113297  Poa annua Lowell Ahart 2014-4-9 19324 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
  POM183185  Poa bolanderi H. F. Copeland 1930-7-21 1349 Butte Jonesville. 1524 Comment
  UC820683  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte summit above Jonesville 2133 Comment
  CHSC89036  Poa bulbosa A. Peterson 2003-3-25 10 Butte East of Chico, Humboldt Rd., along road edge. 152 Comment
  SEINET10968212  Poa bulbosa Lowell Ahart 1984-4-3 Ahart 4534 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC102732  Poa compressa Lowell Ahart 2009-7-9 16022 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 203 Comment
  CHSC34164  Poa pratensis L. Ahart 1981-9-15 3155 Butte On the sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  UCD90391  Poa secunda E. B. Copeland 1943-7-13 s.n. Butte Butte Meadows. Comment
  CHSC100913  Poa secunda subsp. secunda R. A. Schlising; R. Banchero 1981-5-19 4061 Butte Lumpkin Ridge, east of village of Feather Falls. 1280 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
  CHSC25105  Poa secunda subsp. secunda R. W. Wallstrum 1970-3-26 8 Butte Lower side of dam at Magalia Reservoir, 8 mi from Paradise, on s side of road. 609 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
  CHSC8603  Poa secunda subsp. secunda M. Banning 1969-3-22 20 Butte S. edge of Chico Golf Course. 70 Comment
  CHSC2376  Pogogyne douglasii R. Carter 1965-5-13 197 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CHSC75282  Pogogyne douglasii Jennifer Slater 1997-4-20 25 Butte Edge of vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC54365  Pogogyne zizyphoroides M. Bailey 1991-4-19 571 Butte Butte College Campus. Scattered populatios in field just e of Williams Road, ca 1/4 mi n of Pentz Road. Field s of service road to Well #3. 85 Comment
  CHSC67522  Pogogyne zizyphoroides James D. Jokerst 1992-5-19 3363 Butte Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. Cascade Range Foothills. 97 Comment
  SEINET10498988  Pogogyne zizyphoroides Mary Susan Taylor 1978-5-7 Taylor 1613 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS115319  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 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
  CHSC23081  Polygala cornuta Robert A. Schlising 1964-6-12 2728 Butte South of Cohasset, 5.2 miles north of jct. Cohasset Highway and Kiefer Road, along Cohasset Highway; roadside. Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CAS-BOT-BC167556  Polygala cornuta var. cornuta Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  CHSC101808  Polygonum aviculare subsp. depressum Lowell Ahart 2009-6-12 15846 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC108544  Polygonum aviculare subsp. depressum L. P. Janeway 2011-10-20 10780 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East park Ave and 0.3 km south of Comanche Creek. 66 Comment
  RSA32833  Polygonum bidwelliae A. A. Heller 1941-5-25 s.n. Butte Just back of the Rifle Range, 5 miles east of Chico, opposite golf links Comment
  UC726648  Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte 5 mi e Chico (just back of rifle range, opposite golf links) Comment
  CHSC66903  Polygonum californicum Lowell Ahart 1996-11-11 7709 Butte In an open area in blue oaks, pasture field, about 1/2 mile west of the intersection of Avacado Avenue and Oroville Bangor Highway, about 1 mile northwest of Bangor. 213 Comment
  UC1101161  Polygonum lapathifolium Herbert L. Mason and Verne Grant 1946-8-14 13028 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  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
  CHSC69111  Polygonum minimum Lowell Ahart 1997-8-1 7788 Butte Around rocks, near some steamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  RSA31978  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte [Unspecified] 1524 Comment
  JEPS108773  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2006-7-16 13006 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
  SEINET10479687  Polygonum spergulariiforme Mary Susan Taylor 1977-8-17 Taylor 1460 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC30737  Polypodium calirhiza M. S. Taylor 1980-5-27 2651 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC30822  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1980-4-18 2513 Butte W side of Humbug Rd, ca 1 mi s of Nimshew. 609 Comment
  CHSC31851  Polypodium calirhiza L. Ahart 1974-3-8 311 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC150454  Polypodium calirhiza Dr. E. B. Copeland 1902-12-29 2749 Butte Chico Canyon Comment
  CAS-BOT-BC232962  Polypogon australis Lowell Ahart 1987-6-9 5730 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC38851  Polypogon interruptus Vernon Oswald 1983-5-8 448 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five-Mile Rec. Area and the flood-control gates. 79 Comment
  JEPS94905  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, at a poor dirt road, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC32751  Polystichum imbricans M. S. Taylor 1981-4-14 3530 Butte On s side of Ponderosa Way (Rim Rd.), ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  UC123295  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin May, 1896 198 Butte Forest Ranch Comment
  CHSC39818  Polystichum munitum Ruby Gist 1935-5-4 Butte Humboldt Road. Comment
  POM107428  Populus fremontii subsp. fremontii C. C. Bruce 1897-05 1791 Butte Little Chico. Comment
  CAS-BOT-BC102692  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte south of the dirt road, about 1/2 miles south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  UC1562274  Portulaca oleracea Lowell Ahart 1990-7-4 6549 Butte about 1/2 mi sw of the Enterprise Bridge across Lake Oroville (below the high water line Lake Oroville, along McCabe Creek); McCabe Creek 243 Comment
  UCR88931  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte Along the Biggs Princeton Hwy, under P.G. and E. power lines, about 1 mi west of Biggs 29 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
  CHSC99668  Potamogeton pusillus var. tenuissimus R. A. Schlising; A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake. Growing totally submerged under about 2 m of water on a muddy ridge on rocky lake bottom. 1889 Comment
  CHSC105538  Potentilla flabellifolia Lowell Ahart 2010-9-28 17252 Butte On wet humus, south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  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
  SEINET10483224  Potentilla gracilis subsp. nuttallii Mary Susan Taylor 1978-6-24 Taylor 1666 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC105822  Potentilla gracilis var. fastigiata Lowell Ahart 2010-9-28 17253 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  SD2236  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  POM197046  Potentilla norvegica subsp. monspeliensis H. F. Copeland 1928-8-22 1066 Butte Jonesville. 1524 Comment
  CHSC1066  Proboscidea louisianica E. Walker 1932-9-1 Butte Oroville-Marysville road. Comment
  CDA6517  Proboscidea louisianica T. C. Fuller, W. T. Parsons 1960-7-25 4865 Butte Highway 99E, ca. 9 miles northwest of Chico. 0 Comment
  UCD122113  Proboscidea louisianica subsp. louisianica A. A. Heller 1914-5-30 11467 Butte Chico-Hamilton, 6 miles from Chico. Comment
  CHSC52699  Prunus L. P. Janeway 1990-3-25 3660 Butte Campus of California State University, Chico. N side of Glenn Hall. 59 Comment
  CAS-BOT-BC159827  Prunus avium C. R. Quick 1953-8-11 53 -125 Butte Rag Dump Meadow se. of Stirling City Comment
  CHSC110117  Prunus cerasifera L. P. Janeway 2012-2-28 10788 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. Next to the road. 62 Comment
  CHSC27210  Prunus cerasifera P. Moyer 1972-3-2 92 Butte N bank of Chico Creek, 100 ft. from Esplanade Bridge. 60 Comment
  CHSC110113  Prunus dulcis L. P. Janeway 2012-3-6 10790 Butte Sacramento Valley. Oroville; south side of the Feather River just northwest of Centennial Park. At north edge of bicycle trail along north slope of the levee, at top of steep bank down to the river. 49 Comment
  CAS-BOT-BC159928  Prunus emarginata F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC35090  Prunus persica S. Posner 1972-10-3 Butte Garden behind 725 Nord Ave., Chico. Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  CHSC35628  Pseudobahia heermannii R. E. Preston 1982-2-21 176 Butte N side of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 274 Comment
  CAS-BOT-BC357007  Pseudognaphalium luteoalbum John Thomas Howell 1959-9-20 34619 Butte Eastern outskirts of Oroville in lower foothills 60 Comment
  CHSC104799  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CHSC90235  Pseudotsuga menziesii var. menziesii Eric M. Haney 1989-4-23 14 Butte Found on w side of Hwy 32, ca. 2 km n of Forest Ranch. Comment
  CHSC90580  Psilocarphus brevissimus var. brevissimus J. D. Prouty 1980-4-28 80 .94 Butte Roadside along Cherokee Road about 1.5 mi south of junction with Hwy 70, 0.5 mi north of Cherokee. Comment
  CHSC11830  Psilocarphus oregonus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 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
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC72553  Pteridium aquilinum Javier Penalosa 1962-6-18 2443 Butte Near confluence of French and Peavine Crks. 609 Comment
  SEINET10530092  Pteridium aquilinum Mary Susan Taylor 1980-4-27 Taylor 2549 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC57334  Pteridium aquilinum var. pubescens Robert C. Hill 1990-4-10 7 Butte Large population at junction of Enterprise Bridge and south Fork Feather River, 13 mi e of Oroville. 426 Comment
  UCD117755  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  CAS-BOT-BC421112  Pterostegia drymarioides Lewis S. Rose 1945-5-12 45041 Butte Richard Springs 304 Comment
  CAS-BOT-BC239826  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  SEINET10499008  Pycnanthemum californicum Lowell Ahart 1983-9-17 Ahart 4436 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC72888  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. Between northeastern-most campsite and Butte Creek. 1325 Comment
  CHSC94101  Pyrola dentata Lowell Ahart 2006-7-11 12943 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  POM183269  Pyrola picta H. F. Copeland 1930-7-21 s.n. Butte Jonesville 1677 Comment
  UC426928  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CDA13273  Pyrola picta var. dentata G. F. Hrusa, T. D. Wilfred 1996-7-9 13121 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  UC1135490  Quercus berberidifolia J. E. Sowder 1933-6-14 113 Butte .12 mi n 13 Mile House; Chico Quad. 609 Comment
  UCD46177  Quercus garryana John Thomas Howell 1955-6-15 30495 Butte (actually Q. garryana var. breweri (Engelm.) Jepson X Q. dumosa Nutt.) Volcanic slope, 6 miles from Paradise on road to Pentz, Butte County. Part of series, Nos. 30493-304500. 426 Comment
  CAS-BOT-BC105142  Quercus kelloggii John Thomas Howell 1962-6-15 37438 Butte Magalia 731 Comment
  SEINET10970839  Quercus kelloggii Mary Susan Taylor 1981-5-21 Taylor 3763 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC100469  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15453 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC6635  Quercus suber M. MacArthur 1968-6-16 370 Butte Yard of Aymer Jay Hamilton School, Chico State College Campus. 60 Comment
  CAS-BOT-BC104691  Quercus wislizeni John Thomas Howell; H. Keith Wagnon 1980-5-28 53712 Butte Honcut Creek on road from Oroville to Marysville 30 Comment
  CDA19815  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Northern California; Table Mtn, Oroville. 359 Comment
  SD7927  Quercus wislizeni var. wislizeni Mrs. R. M. Austin Butte Comment
  CHSC46841  Ranunculus alismifolius var. lemmonii Kirsten Tarp 1983-8-12 353 Butte E of Philbrook Reservoir at county line. 1975 Comment
  CHSC45511  Ranunculus aquatilis var. hispidulus Lowell Ahart 1974-6-3 467 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  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
  CHSC115288  Ranunculus bonariensis var. trisepalus Lowell Ahart 2015-5-5 20138 Butte 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 Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  SEINET12089318  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run Rds 146 Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  UC827667  Ranunculus canus var. canus A. A. Heller 1915-3-19 11771 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC46844  Ranunculus flammula var. ovalis Kirsten Tarp 1982-7-16 206 Butte N part of county at Crane Valley; streamside at margin of meadow. 1584 Comment
  CDA34237  Ranunculus hebecarpus L. Ahart 2009-4-22 15592 Butte Along the Guardian s Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  SEINET10535972  Ranunculus hebecarpus Mary Susan Taylor 1980-4-1 Taylor 2424 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  CHSC1489  Ranunculus occidentalis R. Carter 1964-3-15 45 Butte 8 mi. E of Oroville, 250 yds. up Wakefield Dr. off Feathervale. 121 Comment
  JEPS110344  Ranunculus occidentalis Lowell Ahart 2006-7-16 12997 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  CHSC45514  Ranunculus pusillus Lowell Ahart 1974-4-28 445 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC54308  Ranunculus repens var. pleniflorus Vernon H. Oswald; Lowell Ahart 1991-6-5 4655 Butte Ewalt Camp on the West Branch of Butte Creek, east of Hwy 32 and north of Carpenter Ridge Rd, between Forest Ranch and Lomo. Along the creek. 914 Comment
  UC478517  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville 1500 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  CHSC38035  Raphanus raphanistrum R. E. Preston 1982-11-13 366 Butte Along sides of Chico-Butte City Hwy, ca. 13 1/2 mi ssw of Chico. 30 Comment
  CHSC52197  Rhamnus ilicifolia L. P. Janeway 1989-5-19 3265 Butte Serpentine outcrop and open area near upper se'ern branches of Rattlesnake Cr, ca 2.3 mi from bridge over W Br Feather River via rd to Sawmill Pk. 807 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
  NY43527  Rhamnus rubra S. Bianco 1995-9-7 1025 Butte Concow area, between Jarbo Gap & Concow, along Deadwood Rd 579 Comment
  UC1121919  Rhamnus rubra C. G. Albertus 1933-7-1 37 Butte sw slope Promontory Point; Chico Quad. 1005 Comment
  CHSC26646  Rhamnus tomentella subsp. tomentella M. S. Taylor 1977-11-10 1514 Butte Small tree, at jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  CHSC39786  Rhamnus tomentella subsp. tomentella Eloise Gallatin 1935-5-4 Butte Humboldt Road above Paradise. Comment
  UC870862  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-17 11882 Butte 5 mi e Chico; Canyon of Chico Creek Comment
  POM77200  Rhododendron occidentale var. californicum C. C. Bruce 1898-06 2472 Butte Forest Ranch. Comment
  CHSC24683  Rhus aromatica D. Hattem 1976-4-10 5 Butte Ca. 50 m ne of Big Chico Creek, ca. 10 mi ne of Chico. 304 Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  JEPS100254  Rhynchospora capitellata Glenn L. Clifton Jul 1992 27157 Butte Flea Valley 1118 Comment
  RSA718500  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Large soggy meadow opening along an upper Western branch of Keyser Creek; 0.7 km. southeast of Bald Mountain summit. 1681 Comment
  CAS-BOT-BC92267  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Near DeSabla. Comment
  CHSC11906  Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville. 1500 Comment
  RSA0020932  Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville. 1500 Comment
  CAS-BOT-BC169092  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CHSC32683  Ribes nevadense M. S. Taylor 1981-3-24 3446 Butte S side of Hwy 70 in immediate vicinity of Poe Dam ca. 1 mi n of Pulga. 487 Comment
  CAS-BOT-BC212667  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte Banks of the Feather River, near Stirling Comment
  CHSC31399  Ribes roezlii Leslie Steidl 1980-3-15 4 Butte Ca. .6 mi nw of Lumpkin Rd on Island Bar Hill Rd. and 1 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  UC600616  Ribes roezlii E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  UC725481  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte near DeSabla 853 Comment
  UC857964  Ribes roezlii A. A. Heller 1915-6-11 11970 Butte Chico Meadows Sierra Nevada 1219 Comment
  CAS-BOT-BC198961  Ribes roezlii var. roezlii A. A. Heller 1939-4-26 15384 Butte Edge of thickets near the river at the foot of the grade leading down from Stirling City Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  CHSC44484  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1979-5-20 1884 Butte Edge of depression, on the west side of the Western Pacific Railroad, about 2 miles south of Palermo. 32 Comment
  JEPS114455  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-12 14730 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
  CHSC27335  Rosa gymnocarpa T. B. Devine 1977-6-5 428 Butte Beside P.G. and E. Flume. Ca. 1 mi n of De Sabla off Humbug Rd. 853 Comment
  JEPS94699  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  CAS-BOT-BC274229  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  CHSC89501  Rotala indica G. Douglas Barbe 1978-8-14 2437 Butte Check-levees, Biggs Rice Experiment Station. [Lat./Long. on label is '39 degrees 44' N; 121 degrees 40' W']. Comment
  UCD166766  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 b Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  JEPS115598  Rubus discolor Lowell Ahart 2009-5-23 15771 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC73432  Rubus leucodermis H. Durio 1995-8-1 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  CHSC11997  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville. 1600 Comment
  JEPS29839  Rubus praecox Rimo Bacigalupi and L. R. Heckard 1962-6-1 8583 Butte along road to Centerville about 200 feet e of its inception at the Paradise Road junction; along road to Centerville 60 Comment
  UCD113549  Rubus praecox Rimo Bacigalupi 1962-6-1 8583 Butte along fence road, along road to Centerville about 200 feet east of its inception at the Paradise Road junction. 60 Comment
  UCD166759  Rubus praecox Marcel Rejmanek 2016-10-6 2162 a Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CHSC99328  Rumex acetosella Lowell Ahart 2008-5-12 14761 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CAS-BOT-BC421907  Rumex acetosella Lowell Ahart 1982-5-28 3443 Butte East of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut 50 Comment
  UC204581  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Chico Meadows Sierra Nevada 1219 Comment
  CHSC116717  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-5-24 20859 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) notheast of Honcut. 44 Comment
  CHSC31546  Sagina decumbens subsp. occidentalis L. Ahart 1978-3-19 1615 Butte In pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET5337060  Sagina decumbens subsp. occidentalis B. Ertter, Jeffrey L. Strachan; L. Ahart 1980-5-7 3295 Butte Peter Ahart Ranch ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  CHSC2053  Sagittaria montevidensis subsp. calycina D. Bower 1953-7-9 Butte 3A Llano Seco. 30 Comment
  UC2026859  Salix babylonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC102800  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  CHSC8626  Salix exigua E. L. Smith 1969-3-29 Butte 2 Mi. SE Chico. Comment
  CHSC90934  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC111739  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC47485  Salix exigua var. hindsiana Lowell Ahart 1984-6-8 4676 Butte About 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 426 Comment
  LA208686  Salix exigua var. hindsiana A. A. Heller; 1914-5-13 11397 Butte near Butte Creek on the road between Durham and Nelson Comment
  RSA0045618  Salix exigua var. hindsiana Lowell A. Ahart 2012-4-9 17828 Butte East of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 111 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CHSC109081  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte @0 yards north of the table at the old homestead, about 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  RSA755039  Salix laevigata L. Ahart 2009-5-15 15687 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CAS-BOT-BC125178  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CHSC108852  Salix lasiolepis Lowell Ahart 2012-3-9 17772 Butte West bank 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. 44 Comment
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 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
  POM107141  Salix lasiolepis C. C. Bruce 1898-05 2480 Butte Little Chico Comment
  CAS-BOT-BC129580  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  RSA503334  Salix lasiolepis var. lasiolepis J. T. Howell, Gordon H. True 1967-5-9 42239 Butte NW side of Feather River Canyon near Pulga Bridge. Comment
  LA208858  Salix lemmonii E. B. Copeland; 1931-8-1 620 Butte Jonesville 1700.0 Comment
  UC600412  Salix lemmonii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  POM107064  Salix melanopsis C. C. Bruce 1806 Butte Chico. Butte Creek. Comment
  RSA768858  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Sacramento Valley. Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between creek and Humboldt Road. 63 Comment
  CHSC110041  Salsola tragus Lowell Ahart 2012-10-28 18517 Butte East edge of Highway 70, about 1/4 mile south of Cottonwood Road, about 3 miles north of Oroville. 90 Comment
  CHSC13717  Salsola tragus M. S. Taylor 1974-10-11 332 Butte Abundant in weed field, ca. 50 ft e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  JEPS95990  Salsola tragus Lowell Ahart and Vernon H. Oswald 1999-10-3 8295 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  POM71110  Salvia sonomensis C. C. Bruce 1897-05 1983 Butte Forest- Ranch. Comment
  RSA123292  Salvia sonomensis A. E. Wieslander, J. E. Sowder 1933-6-24 326 Butte Keefer Ridge. 305 Comment
  CHSC31408  Sambucus mexicana Debra Dockrey 1980-4-21 4 Butte Ca. 8 mi N of Chico. 365 Comment
  UC175514  Sanicula bipinnata A. A. Heller 1913-4-5 10707 Butte above Oroville (n side of Feather River); Feather River Comment
  CHSC108811  Sanicula bipinnatifida Lowell Ahart 2012-4-9 17826 Butte About 20 yards southeast of Big Chico Creek, on the northwest side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  CHSC30875  Sanicula bipinnatifida J. D. Jokerst 1979-4-2 1170 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. East edge of Mt. 396 Comment
  CHSC3592  Sanicula bipinnatifida Susan Carrauthers 1966-2-28 26 Butte Ca. 8 mi N.E. of city of Chico. 3 mi N.E. of Bidwell Golf Course. Ca 1/2 mi W of Chico Creek Salmon Hole near a small creek coming down the canyon. Comment
  UC195452  Sanicula bipinnatifida A. A. Heller 1914-3-18 11206 Butte 8 mi n of Oroville (near w base of Table Mountain); Table Mountain Comment
  RSA723863  Sanicula bipinnatifida Frances Kimball 1965-5-2 s.n. Butte Cherokee Road, 9.9 miles East of Calif. Rt. 70 between Oroville and Quincy; top of Table Mt. gully. Comment
  CHSC10541  Sanicula bipinnatifida var. flava Lowell Ahart 1965-4-11 Butte Ahart Ranch, Honcut. 60 Comment
  CHSC4149  Sanicula bipinnatifida var. flava R. Carter 1966-4-2 327 Butte Found ca. 7 mi. E of Oroville, ca. 1/8 mi. W of Feathervale at 6120 Woodleaf St. Rt., 50 yds. SW of house. 243 Comment
  SEINET10454659  Sanicula crassicaulis Mary Susan Taylor 1980-4-18 Taylor 2514 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 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
  JEPS97504  Sanicula graveolens James D. Jokerst 1985-5-20 2355 Butte E of West Branch Feather River, 1 mi due E of the Skyway at Inskip Comment
  UC1562471  Sanicula graveolens Vernon Oswald and Lowell Ahart 1990-5-29 4260 Butte 1.8 mi E of Lomo (NW side of Humboldt Rd (to Butte Meadows)) 1380 Comment
  CHSC60574  Sanicula tracyi Vernon H. Oswald; Lowell Ahart 1993-4-19 5278 Butte Rattlesnake Creek Trail from JordanHill Rd. to Sawmill Pk. Lookout, ENE of Magalia. 701 Comment
  CHSC28650  Sanicula tuberosa M. S. Taylor 1979-3-20 1928 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of bridge over north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC29097  Sanicula tuberosa M. S. Taylor; J. D. Jokerst 1980-4-18 2521 Butte On e side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  CHSC32624  Sanicula tuberosa M. S. Taylor 1981-3-31 3463 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
  CHSC97426  Sanicula tuberosa Robert Fischer 2006-6-11 1013 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of Humboldt Road junction. UTM: 10634233E 4441779N. 1752 Comment
  POM219371  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Near Jones Creek Comment
  CHSC43659  Sapium sebiferum Vernon Oswald 1987-7-8 3098 Butte Butte Creek Reserve, on the north side of Butte Creek east of the Skyway, east of Chico. On the edge of the creek. 73 Comment
  CHSC42388  Saponaria officinalis Lowell Ahart 1987-6-9 5725 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC600604  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville Comment
  CAS-BOT-BC436862  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC100974  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC2824  Scandix pecten-veneris David Prall 1965-4-25 32 Butte South side of Humbug Rd. 0.3 miles west of junction with Honey Run rd. (covered bridge). 198 Comment
  CHSC34224  Scandix pecten-veneris M. S. Taylor 1981-5-1 3589 Butte E side of Hwy 70, ca. 4 air mi nw of Oroville. 91 Comment
  CHSC33660  Sceptridium multifidum R. A. Schlising; K. Tarp 1981-7-28 4170 Butte N of Inskip in NE part of county, near junction of creek from Coon Hollow and West Branch of North Fork of Feather River. 1328 Comment
  CHSC2113  Schoenoplectus acutus var. occidentalis R. Morford 1931-4-28 Butte Dodge Lands. 30 Comment
  CHSC36552  Schoenoplectus acutus var. occidentalis L. Ahart 1982-7-10 3674 Butte On bottom of a dry duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  JEPS98280  Scirpus diffusus Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  SEINET7487248 Image available Scirpus diffusus Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11404 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
  CHSC98953  Scleranthus annuus subsp. annuus Lowell Ahart 2008-5-12 14743 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
  JEPS115330  Scleranthus annuus subsp. annuus Lowell Ahart 2009-4-22 15574 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
  CAS-BOT-BC239959  Scribneria bolanderi Lowell Ahart 1980-5-4 2212 Butte Near Hurleton 600 Comment
  CAS-BOT-BC239961  Scribneria bolanderi John Thomas Howell 1967-6-22 42617 Butte Magalia 701 Comment
  CHSC38854  Scribneria bolanderi Vernon Oswald 1983-3-26 212 Butte Upper Bidwell Park, Chico, on the north rim ca. 1200 ft w of the power lines. 213 Comment
  CHSC46442  Scribneria bolanderi Lowell Ahart 1989-5-23 6263 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  SEINET10968193  Scribneria bolanderi Mary Susan Taylor 1980-5-15 Taylor 2633 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC1900  Scrophularia californica subsp. floribunda L. Oliver; D. Sloan 1935-4-20 Butte Feather River Canyon. Comment
  CHSC38715  Scrophularia californica subsp. floribunda Vernon Oswald 1983-4-1 253 Butte Upper Bidwell Park, Chico, s of the creek and e of the footbridge near the 4th green of the Golf Course. 91 Comment
  CHSC101828  Scutellaria californica Lowell Ahart 2009-5-23 15762 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
  CHSC44281  Scutellaria californica Vernon Oswald 1988-6-14 3382 Butte Jordan Hill Rd. 1.1 mi (odometer) n of Griffin Gulch. 688 Comment
  CHSC62752  Scutellaria californica L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4356 Butte About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. 381 Comment
  POM70088  Scutellaria californica Edward Palmer 1892-6-7 2054 Butte Near Chico. Comment
  UC1713627  Scutellaria californica Lewis S. Rose 1940-5-30 40426 Butte 25 mi ne of Oroville (Feather River Canyon); Feather River Canyon 609 Comment
  CHSC44140  Scutellaria siphocampyloides Vernon Oswald 1988-8-3 3660 Butte North side of Humboldt Rd. ca. 0.1 mi w of its intersection with Scout Rd. in Butte Meadows. 1325 Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  SFV5836  Scutellaria siphocampyloides M. L. Vincent 1968-6-5 768 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC87419  Scutellaria tuberosa R. D. Fischer 2004-3-13 109 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Humboldt Trail. 434 Comment
  RSA126023  Scutellaria tuberosa E. K. Balls 1957-5-22 22504 Butte Feather River Hwy. U.S. 40 alt., 18 mi. ne. from Oroville. 701 Comment
  CHSC42518  Secale cereale Lowell Ahart 1987-5-6 5571 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC415024  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville road, about 7 miles from Chico Comment
  SEINET8552582  Sedum B. Nightingale 1961-4-29 s.n. Butte Butte Creek, ca 10 miles E of Chico. 61 Comment
  CAS-BOT-BC63851  Sedum spathulifolium Lowell Ahart 1980-5-29 2358 Butte 5 miles NE of Mountain House. 1100 Comment
  SEINET10449688  Sedum spathulifolium subsp. purdyi Mary Susan Taylor 1980-5-27 Taylor 2689 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC62120  Selaginella hansenii John Thomas Howell; Gordon H. True 1967-5-9 42232 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CAS-BOT-BC62115  Selaginella hansenii W. I. Follett 1948-6-6 s.n. Butte West branch of Feather River at Dark Canyon 182 Comment
  UCD135979  Selaginella hansenii L. Ahart 1974-1-6 294 Butte Peter Ahart Ranch, Honcut; along North Honcut Creek. 45 Comment
  CAS-BOT-BC69775  Selaginella wallacei Gladys L. Smith 1976-6-5 4543 Butte At Selaginella Cliff. Rte. 70 Feather River Canyon. 548 Comment
  SBBG32387  Senecio eurycephalus L. S. Rose 1967-6-11 Butte 3 mi S of Pulga, Feather River Cyn Comment
  SFV11410  Senecio hydrophiloides M. L. Vincent 1965-4-17 638 Butte 6 miles north of New Feather River bridge (west fork). Comment
  SBBG27945  Senecio integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  CAS-BOT-BC363994  Senecio integerrimus var. major Lowell Ahart 1987-5-22 5670 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  LA204252  Senecio integerrimus var. major E. B. Copeland; 1929-7-14 498 Butte Jonesville 502 Comment
  CDA7667  Senecio sylvaticus L. Ahart 1998-6-3 7966 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS127028  Senecio sylvaticus Lowell Ahart 2016-6-4 20939 Butte On the east side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  CHSC2813  Senecio vulgaris David Prall 1965-3-14 11 Butte Ca 1 yd. south of Neal Rd. 1 mile east of HW. 99E. 106 Comment
  CHSC48129  Sericocarpus oregonensis Vernon H. Oswald 1985-8-15 1930 Butte Skyway 0.2 mi S of Inskeep. 1463 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  SEINET10609515  Setaria pumila Lowell Ahart 1995-8-19 Ahart 7615 Butte T17N, R4E, south-east 1/4 Section 11. Normal size plants, on dry sandy soil, east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. Foothill Woodland. 37 Comment
  JEPS115349  Setaria viridis Lowell Ahart 2009-6-3 15994 Butte In the native plant garden, 40 yards south of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards southeast of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC46086  Sherardia arvensis Lowell Ahart 1989-3-25 6199 Butte Along an old dirt road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  UCD18736  Sherardia arvensis Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 29 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  JEPS102345  Sibara virginica Lowell Ahart 2001-4-27 8733 Butte 1 3/4 mi W of Honcut (just NW of bridge across Wyandotte Creek, N of Lower Honcut Road, 125 yds W of the railroad) 26 Comment
  CHSC29406  Sidalcea asprella R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3759 Butte E of Lake Oroville, 3.4 mi N and W of Forbestown along Forbestown Road. 892 Comment
  CHSC84867  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7805 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 173 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 299 Comment
  UC1013144  Sidalcea asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mi e Forbestown Comment
  CHSC29408  Sidalcea calycosa R. A. Schlising 1980-6-22 3753 Butte Several mi S of village of Cohasset. 441 Comment
  SEINET10480000  Sidalcea calycosa Mary Susan Taylor 1984-4-6 Taylor 5404 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  RSA755757  Sidalcea calycosa subsp. calycosa L. Ahart 2009-5-23 15764 Butte West side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, bout 10 miles northeast of Chico. 382 Comment
  CHSC33518  Sidalcea gigantea R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4140 Butte NE part of county, E of Fork of Feather River and NE of Coyote Gap. On Four Trees Road. 1447 Comment
  JEPS97945  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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  JEPS117413  Sidalcea glaucescens Lowell Ahart 2010-9-28 17246 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  CHSC52445  Sidalcea hartwegii Molly Henry 1981-4-10 7 Butte 1 mi E of Chico, 100 yds W of hwy 32. 100 Comment
  CHSC90104  Sidalcea hartwegii M. A. Carlson 1991-4-12 18 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  JEPS104599  Sidalcea malviflora Lowell Ahart 1993-10-3 7269 Butte W branch of Wildcat Creek, about 2 mi NE of Coyote Gap 1402 Comment
  JEPS104600  Sidalcea malviflora Lowell Ahart 1993-10-3 7269 Butte W branch of Wildcat Creek, about 2 mi NE of Coyote Gap 1402 Comment
  CAS-BOT-BC213189  Sidalcea robusta A. A. Heller; H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek Comment
  UC727036  Sidalcea robusta A. A. Heller 1941-5-9 16108 Butte steep roadside bank on the Clark Road about a mi above old Clear Creek Post Office; mi above site of old Clear Creek Post Office Comment
  CHSC54299  Silene antirrhina Vernon H. Oswald; Lowell Ahart 1991-6-5 4647 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. 701 Comment
  CAS-BOT-BC174848  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City 1706 Comment
  UC852813  Silene californica Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  POM100876  Silene californica C. C. Bruce 1897-05 1875 Butte Forest- Ranch. Comment
  SEINET10932255  Silene californica Mary Susan Taylor 1980-10-6 Taylor 3353 Butte T23N R5E se sec 15, Pulga quad. S side of Hwy 70, ca. 0.4 mi W of Bear Creek jct with N Fork Feather River, ca. 0.5 mi W of Arch Rock Tunnel Rest Stop, near Butte-Plumas county line; granitic soils. 488 Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  CHSC118500  Silene laciniata subsp. californica L. P. Janeway 2016-5-9 11955 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC90050  Silene laciniata subsp. californica Peggy Fain 1991-4-21 19 Butte Ca. 3 km. E. of Richardson Springs Hotel, N. side of Walker Creek, Musty Buck Preserve. 243 Comment
  CAS-BOT-BC389014  Silene laciniata subsp. californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 28 Butte NW of Paradise on Honey-Run Rd, 2.5 miles down from canyon rim Comment
  UCD99012  Silene laciniata subsp. californica Cynthia D. Seaman 1980-3-21 1 Butte NE side of Dark Canyon Road, 2 miles off Highway 70, 25 miles east of Chico. 487 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC94273  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  UC600622  Silene lemmonii H. F. Copeland 1930-7-21 Butte Jonesville Comment
  CHSC80519  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC101689  Sisymbrium officinale Lowell Ahart 2009-5-8 15656 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
  CHSC96802  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 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
  UC600564  Sisyrinchium bellum H. F. Copeland 1920-7-29 465 Butte Jonesville Comment
  SEINET10469806  Sisyrinchium elmeri Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC41256  Sisyrinchium idahoense S. C. Morey 1983-7-21 475 Butte Cherry Hill Meadow. On n side of humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC436312  Smilacina racemosa E. B. Copeland July 1930 Butte Jonesville 1550 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
  SEINET10872502  Smilax californica Mary Susan Taylor 1975-10-29 Taylor 972 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
  CHSC66084  Solanum americanum Vernon H. Oswald 1996-5-23 7633 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  CHSC11881  Solanum parishii E. B. Copeland 1930-7-27 453 Butte Jonesville. 1600 Comment
  CAS-BOT-BC157461  Solanum umbelliferum M. S. Taylor 1982-5-2 4383 Butte Along Truex Rd, ca. 1/2 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville 365 Comment
  SEINET10546692  Solanum umbelliferum Mary Susan Taylor 1984-4-6 Taylor 5413 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  RSA193089  Solidago canadensis subsp. elongata E. B. Copeland 1930-8-27 499 Butte Jonesville. 1500 Comment
  SEINET10839147  Solidago canadensis subsp. elongata Mary Susan Taylor 1978-7-21 Taylor 1832 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
  CHSC36965  Solidago elongata M. S. Taylor 1982-8-16 4988 Butte S end of Stirling City, along both sides of the Skyway. 1036 Comment
  UC1999867  Solidago elongata J. C. Semple, S. Heard 1986-8-14 8432 Butte Jonesville, banks of Butte Creek, by road to Butte Meadows. Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  CAS-BOT-BC364942  Solidago velutina subsp. californica Lowell Ahart 1988-7-24 6130 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CHSC101157  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC47667  Soliva sessilis Lowell Ahart 1979-5-11 1871 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10474007  Sonchus asper Mary Susan Taylor 1981-5-14 Taylor 3713 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CDA2507  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC4396  Sorghum halepense R. Jaegel 1966-5-20 Butte 3 mi NW of Chico. Comment
  CHSC112242  Spergularia bocconi Lowell Ahart 2013-4-20 18563 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC112244  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC50993  Spergularia rubra Lowell Ahart 1990-7-4 6548 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
  CHSC65196  Spergularia rubra Lowell Ahart 1995-5-26 7572 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  SEINET10833463  Spergularia rubra Mary Susan Taylor 1982-6-24 Taylor 4739 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  POM196150  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville. 1500 Comment
  RSA724890  Spiraea douglasii L. Ahart 2006-8-15 13184 Butte 10 yards W of Willow Creek. About 100 yards SE of the cabin. About 3/4 air mile NW of Jonesville. About 5 air miles NE of Butte Meadows. 1570 Comment
  SBBG128718  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CHSC99477  Spiranthes porrifolia Lowell Ahart 2008-6-13 14825 Butte Small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CDA14085  Stachys ajugoides G. F. Hrusa, T. D. Wilfred 1997-7-3 13969 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  CHSC44929  Stachys ajugoides var. rigida Lowell Ahart 1988-7-31 6153 Butte Around stream rounded boulders, on the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC52204  Stachys ajugoides var. rigida L. P. Janeway; Bob McNairn 1989-4-29 3228 Butte Bottom of cyn of Mud Cr; along Richardson Springs Rd ca 2 1/4 mi E of Cohasset Hwy. 132 Comment
  CHSC43644  Stachys pycnantha B. Castro 1987-8-25 205 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC89466  Stachys pycnantha R. D. Fischer 2004-7-18 447 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
  JEPS114740  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte 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
  SD6179  Stachys rigida var. rigida E. B. Copeland 1930-7-20 Butte Jonesville 1500 Comment
  RSA452234  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
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  CAS-BOT-BC175314  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 Comment
  CHSC61637  Stellaria borealis subsp. sitchana Lowell Ahart 1993-9-13 7230 Butte On the bottom and edges of washes along Bolt Creek, along the edges of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  SEINET10537516  Stellaria longipes Mary Susan Taylor 1978-6-24 Taylor 1655 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CAS-BOT-BC391085  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  CAS-BOT-BC391086  Stellaria longipes subsp. longipes E. B. Copeland 1931-6-1 638 Butte Jonesville 1500 Comment
  RSA0041906  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 s.n. Butte Jonesville. Comment
  CHSC46556  Stellaria longipes var. longipes Vernon H. Oswald 1989-7-15 3858 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along a drainage on the sw corner of the meadow. 1767 Comment
  CDA42852  Stellaria pallida L. Ahart 2012-4-3 17943 Butte On large rocks, on the north side of Bloody Pin Trail, 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. Comment
  CHSC46558  Stellaria umbellata V. Oswald; L. Ahart 1989-7-21 3876 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  SEINET10474965  Stephanomeria paniculata Lowell Ahart 1991-8-25 Ahart 6704 Butte On the north side of the dirt road, Forest Road 23N60 (Jordan Creek-Marble Creek Road) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. Yellow Pine Forest. T22N R6E NW/S24. 1097 Comment
  RSA0038270  Stipa californica E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  SEINET10508395  Stipa nelsonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3522 Butte T22N R4E ne sec 2, Pulga SW quad. S-facing barren serpen- slope ca. 50 ft. up from creek, ca. 1/4 mi n of Pine Cluster Ranch, base of open dry serptentine outcrop between Concow Rd and a large knoll, ca. 6 mi n of Jarbo Gap on Hwy 70; 2400 ft. 721 Comment
  SEINET11991653  Streptanthus diversifolius S. M. Bryan 1974-1 2 Butte on Table Mt., ca 3 mi W of Cherokee-Oroville Rd, ca 6 mi N of Oroville 396 Comment
  CHSC94104  Streptanthus longisiliquus Lowell Ahart 2006-7-11 12939 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC91266  Streptanthus polygaloides L. P. Janeway 2005-5-29 8414 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  JEPS25036  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  CAS-BOT-BC87436  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Sierra Nevada Foothills. South Branch of the Feather River at magalia. 487 Comment
  CHSC36690  Streptanthus tortuosus R. E. Preston 1981-6-22 99 Butte Ca. 7 mi ne of the town of Feather Falls. 1280 Comment
  CHSC36692  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  CDA25189  Streptanthus tortuosus var. suffrutescens L. Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC60969  Streptanthus tortuosus var. tortuosus Lowell Ahart 1993-6-20 6990 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC62098  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CHSC46698  Subularia aquatica var. americana V. Oswald; L. Ahart 1989-8-22 3953 Butte Summit Lake on the n slope of Snow Mtn, ca. 4 mi (air) se of Jonesville. Along the nw edge of the lake. 1889 Comment
  UC774460  Swertia albicaulis var. nitida Carl B. Wolf 1941-7-23 Butte 7 mi w De Sable (on rd to Forest Ranch); Northern Sierra Nevada 762 Comment
  SEINET10465014  Symphoricarpos Mary Susan Taylor 1974-3-19 Taylor 83 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CAS-BOT-BC234613  Symphoricarpos mollis E. B. Copeland 1930-7-7 s.n. Butte Jonesville 1600 Comment
  JEPS119917  Symphyotrichum bracteolatum Lowell Ahart 2012-10-20 18492 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC97689  Symphyotrichum chilense H. E. Brown 1896-9-15 80 Butte near Clear Creek 53 Comment
  CAS-BOT-BC99046  Symphyotrichum cusickii John Thomas Howell 1961-9-22 36791 Butte Sierra Nevada - North Fork Feather River at ARch Rock Tunnel Comment
  CHSC94580  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2006-9-9 13245 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  JEPS124195  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20550 Butte About 100 yards east of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC103427  Symphyotrichum subspicatum Lowell Ahart 2009-11-19 16553 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
  CAS-BOT-BC98326  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1981-9-10 3150 Butte Gray Lodge, SW of Gridley. 35 Comment
  UCD136673  Symphyotrichum subulatum var. parviflorum L. Ahart 1982-9-9 3767 Butte 100 me