Search Results — 2000 specimen records retrieved (1618 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3157  Abelia chinensis Gary Dutton 1966-5-9 278 Butte Found on C.S.C. north-east side of Science Bld. Comment
  CHSC3900  Abies concolor R. Carter 1966-7-31 498 Butte 17 mi NE of Oroville on W side of Big Bald Rock along E side of Big Bald Rock Rd. 1066 Comment
  UC1134156  Abies concolor J. E. Sowder, C. G. Albertson 1933-6-26 96 Butte 0.25 mi sw of Yankee Hill; Chico Quadrangle 487 Comment
  SEINET10530548  Abies concolor Lowell Ahart, Peter Ahart 1984-9-26 Ahart 4812 Butte On dry deep soil on the banks of the South Fork of the Feather River, near the new bridge, ca. 1 mi N of Golden Trout Crossing, ca. 18 mi E of Feather Falls. Yellow Pine Forest; 700 m elev. 700 Comment
  CAS-BOT-BC73491  Abies magnifica H. F. Copeland 1938-8-7 s.n. Butte Jonesville - at summit of Humboldt Road. 2133 Comment
  CHSC3266  Acer buergerianum M. L. Hillier 1966-2-4 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CAS-BOT-BC330563  Acer circinatum Rimo Bacigalupi 1934-9-2 2326 Butte W fork of Campbell Creek along Chic-Butte Meadows Road, 9 mi SW of Butte Meadows 914 Comment
  UC1171585  Acer circinatum J. E. Sowder 1933-7-6 106 Butte 2 mi ne Cohassett; Chico Quad., ne of Cohassett Comment
  CHSC46803  Acer glabrum var. torreyi R. A. Schlising; L. Janeway 1988-7-1 4554 Butte NE part of county, NE of Snow Mountain; Comment
  CHSC115410  Acer negundo M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  CHSC5948  Acer negundo var. californicum M. MacArthur 1968-6-18 206 Butte SE side of Big Chico Creek, ca. 30 ft. N of Dining Hall, Chico State College campus. 60 Comment
  CHSC27564  Achillea millefolium Robert Schlising 1978-5-17 3255 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  JEPS102774  Achillea millefolium Lowell Ahart 2001-6-13 8818 Butte Center 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
  CHSC39505  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  UC1594726  Achnatherum occidentale subsp. californicum Lowell Ahart 1992-7-26 6843 Butte 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain; w of small stream) 1767 Comment
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  CAS-BOT-BC204850  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CHSC42559  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 1/2 miles south-west of Pulga. 365 Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC28864  Acmispon parviflorus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 467 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
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Jan 19 2011
  CHSC101143  Acmispon wrangelianus Lowell Ahart 2009-5-15 15705 Butte On the east side of Big Chico Creek, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CAS-BOT-BC412868  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville 2100 Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  CHSC27914  Adenocaulon bicolor M. S. Taylor 1978-7-19 1734 Butte Cherry Hill Campground, on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  RSA718733  Adenocaulon bicolor L. Ahart 2006-7-25 13053 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SD5472  Adenocaulon bicolor E. B. Copeland 1930-8-9 Butte Jonesville 1500 Comment
  CHSC39841  Adiantum jordanii Maxey-Jones 1928-2-27 Butte Iron Canyon. Comment
  CHSC28465  Aegilops triuncialis R. A. Schlising 1979-5-30 3427 Butte Richvale Vernal Pools, south of jct of Hwy 162-to-Oroville and Hwy 99, along latter across from Thermalito Afterbay. Comment
  HSC103928  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Plumas National Forest; along Oroville-Quincy Hwy., 5.6 road km N of the bridge over Canyon Creek arm of Lake Oroville 357 Comment
  UCD51568  Aegilops triuncialis James Mallory 1967-6-14 269 Butte 10 miles s.e. Chico near jct. Pentz and Williams Road. Comment
  UC175551  Aesculus californica A. A. Heller 1913-5-25 10756 Butte near Pents <Pentz> 152 Comment
  CHSC45667  Ageratina occidentalis Vernon Oswald 1987-7-16 3124 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  SEINET10572507  Agoseris Mary Susan Taylor 1980-4-18 Taylor 2508 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC45263  Agoseris glauca var. monticola Vernon Oswald; Lowell Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kemshew Creek, ca. 1.5 mi (air) NE of Jones Meadow. 1950 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
  CHSC30030  Agoseris heterophylla Lowell Ahart 1980-5-4 2209 Butte Ca. 50 m SW of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi SE of Hurleton. 600 Comment
  CHSC8144  Agoseris heterophylla J. G. Moore 1969-4-13 76 Butte Pentz Rd., 200 yds. E of Hwy. 99, on S side of road. 60 Comment
  JEPS93835  Agoseris heterophylla Lowell Ahart 1998-7-1 8024 Butte about 7 air mi n of Oroville (about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
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Jan 19 2011
  SEINET7067148  Agoseris heterophylla A. G. Vestal 1947-4-30 s.n. Butte South Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 623844mE, 4378757mN. Comment
  SEINET10475111  Agoseris retrorsa Mary Susan Taylor 1981-5-21 Taylor 3771 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CAS-BOT-BC447797  Agrimonia gryposepala Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  SACT000053  Agropyron laeve Herbert Copeland 1935-7-25 Butte Comment
  CHSC116333  Agrostis avenacea Lowell Ahart 2015-10-20 20564 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
  CHSC50700  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC27289  Agrostis capillaris P. Moyer 1972-4-27 228 Butte CSUC campus. In front of Physical Sci. Bldg. 60 Comment
  CHSC69711  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte Back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville. 51 Comment
  UCD169334  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Peter Ahart Ranch. About 12 miles (air) southeast of Oroville, about 2 1/4 miles north and 1 1/4 miles east of Honcut. 35 Comment
  CDA13312  Agrostis exarata G. F. Hrusa, T. D. Wilfred 1996-7-9 13158 Butte Sierra Nevada; Shaded banks on E side of bridge over Marble Creek along USFS N60. Occasional, perennial. Comment
  SEINET10968288  Agrostis exarata Mary Susan Taylor 1978-7-19 Taylor 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UCD53000  Agrostis idahoensis August L. Hormay 1929-8-19 s.n. Butte Philbrook, near Graham Mine. Comment
  CAS-BOT-BC138852  Agrostis microphylla Lowell Ahart 1988-5-28 6007 Butte Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC138775  Agrostis scabra John Thomas Howell 1961-9-22 36715 Butte Sierra Nevada. Bank of Feather River. Oroville. 53 Comment
  CAS-BOT-BC138640  Agrostis stolonifera Lowell Ahart 1987-7-3 5773 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC64057  Agrostis stolonifera S. C. Morey 1983-8-4 707 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC64252  Agrostis stolonifera S. C. Morey 1983-7-23 581 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC88153  Agrostis stolonifera Lowell Ahart 2004-7-23 11306 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  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
  JEPS121923  Agrostis thurberiana Lowell Ahart 2014-7-10 19612 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC138577  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit east of Jonesville. 2133 Comment
  CHSC6029  Ailanthus altissima M. MacArthur 1968-6-18 227 Butte Ca. 10 ft. from Big Chico creek (SE) opposite LS bld., Chico State College campus. 60 Comment
  CAS-BOT-BC445433  Alisma triviale Lowell Ahart 1986-11-9 5449 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC112334  Alisma triviale Lowell Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC33525  Alisma triviale R. A. Schlising 1981-6-21 4104 Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UCD137973  Alisma triviale J. Jones 1924-9-20 s.n. Butte Biggs Comment
  SEINET10471917  Allium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5512 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. 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
  CHSC90575  Allium amplectens Robert Lyster 1984-4-21 16 Butte About 9 mi east of Chico and 75 yds west of Butte Creek and 100 yds southwest of Covered Bridge. 108 Comment
  CAS-BOT-BC460730  Allium amplectens Lewis S. Rose 1945-5-12 45016 Butte Richardson Springs 304 Comment
  RSA21176  Allium amplectens Carl B. Wolf 1937-5-14 8668 Butte Sacramento Valley, 4 1/2 miles W of Oroville on road to Richvale. 46 Comment
  RSA256662  Allium amplectens R. A. Vanbianchi 1974-4-20 209 Butte 300 yards south of the intersection of Pentz and Clark Roads. Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  HSC32558  Allium cratericola David Johnson 1974-4-20 42 Butte Table Mtn. Comment
  SEINET3884402  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3373 Butte Top of Table Mountain just w. of Cherokee Rd., 6.4 mi s. of Hwy. #70 n. of Oroville.; 0 Comment
  RSA770517  Allium membranaceum S. Mashayekhi, M. Biabani 2010-6-11 SM 060 Butte North of Lake Oroville, 0.8 miles south of Bald Rock Road, with its junction with Oroville-Quincy Hwy at Brush Creek. East side of the dirt road. 1045 Comment
  CAS-BOT-BC472972  Allium membranaceum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CDA13893  Allium obtusum var. conspicuum G. F. Hrusa, T. D. Wilfred 1997-5-8 13750 Butte Sierra Nevada; Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC36947  Allium obtusum var. conspicuum D. Burk; R. A. Schlising, K. Tharp 1982-6-16 4297 Butte NE part of county, NE of Oroville and Oroville-Quincy Hwy; at corner of Walker Plains. 1554 Comment
  CHSC28136  Allium peninsulare J. D. Jokerst 1979-4-25 204 Butte 200 m. se of intersection Rock Creek Road and Cohasset Hwy. 146 Comment
  CHSC30815  Allium peninsulare M. S. Taylor; J. D. Jokerst 1980-4-19 2546 Butte S side of Butte Creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CAS-BOT-BC132069  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  JEPS117692  Allium sanbornii var. sanbornii Lowell Ahart 2010-7-27 16911 Butte On the west side of Forbestown Road, about 1/10 mile north of Black Bart Road, about 11 miles east of Oroville 741 Comment
  JEPS87858  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte ca. 1/2 mi. s.e. Little Bald Rock (s. side of Bean Creek Rd.) 914 Comment
  CAS-BOT-BC475440  Allium serra A. A. Heller 1915-4-20 11849 Butte 2 miles below Centerville in the Sierra foothills Comment
  RSA325885  Allophyllum divaricatum L. Ahart, P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  CHSC35103  Allophyllum integrifolium R. Preston; R. Banchero, R. Schlising 1981-7-14 4146 Butte N part of county, ca 0.3 mi SW of Humbug Summit. 1981 Comment
  UC398943  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville Comment
  UC879963  Allophyllum integrifolium A. A. Heller 1917-7-26 12824 Butte Butte Meadows 1402 Comment
  UC203870  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Creek Sierra Nevada, Butte Meadows (banks) 1219 Comment
  CAS-BOT-BC170911  Alnus rhombifolia Javier Penalosa 1962-6-18 2440 Butte Near confluence of French and Peavine Crks. 609 Comment
  CDA9273  Alnus rhombifolia D. G. Kelch 2006-8-2 6 .353 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC111396  Alnus rhombifolia Lowell Ahart 2012-5-14 18052 Butte On dry deep excellent soil, on the south bank of Big Chico Creek, north of the paved road, between Tables 10 and 11, Lower Bidwell Park, Chico. 73 Comment
  OBI69161  Alnus rhombifolia Kari Fisher 2000-11-10 46 Butte Chico State Campus, along Big Chico Crk 79 Comment
  CDA42995  Alopecurus carolinianus L. Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. Comment
  CHSC25071  Alopecurus howellii T. N. Casale 1974-4-24 26 Butte Ca. 0.9 mi ne of Keefer Rd. from its junction with Hwy 99. 54 Comment
  CDA31388  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville Comment
  CHSC47603  Alopecurus saccatus Lowell Ahart 1982-5-10 3429 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC54374  Alopecurus saccatus M. Bailey 1991-3-29 555 Butte Butte College campus. Ca 200 feet s of Wallis Pond e of Williams Road and ca 1/4 mi n of Pentz Road. 85 Comment
  UCD55916  Alopecurus saccatus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  CHSC113104  Amaranthus albus Lowell Ahart 2013-11-18 19280 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
  CHSC72246  Amaranthus albus Lowell Ahart 1998-9-11 8062 Butte About 1/2 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  JEPS124159  Amaranthus albus Lowell Ahart 2015-11-7 20615 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC51346  Amaranthus californicus Vernon Oswald 1990-9-27 4454 Butte Paradise Lake, ca. 3 mi north of Magalia. 772 Comment
  JEPS103456  Amaranthus californicus Lowell Ahart 2002-10-17 9984 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS124158  Amaranthus californicus Lowell Ahart 2015-11-7 20616 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  RSA726365  Amaranthus hybridus L. Ahart 2007-7-2 14241 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
  SBBG128776  Amaranthus palmeri L. Ahart 2013-10-16 19111 Butte W side of Hwy 99E, ca. 20 yards S of B St, ca. one mi E of Biggs 30 Comment
  CDA3282  Amaranthus retroflexus L. Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. Comment
  CHSC64064  Ambrosia artemisiifolia B. Castro; L. P. Janeway, M. Halterman, C. Pidgeon 1987-10-17 246 Butte At Graylodge Waterfowl Management Area. Ca 0.25 mi NW of the headquarters. 21 Comment
  CHSC110332  Ammannia coccinea B. Castro; Margie Graham 2013-8-24 1600 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal about 100 ft S of dirt road crossing the canal. 35 Comment
  SEINET10452865  Ammannia coccinea Lowell Ahart 1990-10-5 Ahart 6632 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  CHSC66359  Ammannia robusta Vernon H. Oswald 1996-6-20 7825 Butte Sacramento National Wildlife Refuge, Llano Seco unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CHSC94383  Ammannia robusta Lowell Ahart 2006-8-5 13085 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  NY622100  Amsinckia congruens A. A. Heller 1918-3-30 12981 Butte 8 miles North of Oroville Comment
  CHSC3876  Amsinckia intermedia Susan Carrauthers 1966-3-14 63 Butte Ca. 4 mi N.W. of city of Chico on Highway 32 next to Lindo Channel. Comment
  SEINET12326971  Amsinckia intermedia J. S. Adams 1980-1 5 Butte Horseshoe Lake, opposite Golf Course, Upper Bidwell Park, Chico 98 Comment
  UC1111640  Amsinckia menziesii var. menziesii Francia Chisaki 1956-4-19 683 Butte 1.5 mi s of West Branch of Feather River (on Nelson Bar Road) Comment
  SEINET10507169  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. 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
  CHSC45695  Anisocarpus madioides Vernon Oswald 1985-6-17 1842 Butte Beside a logging road 0.1 mi e of the trailhead to Feather Falls. 768 Comment
  UC1609222  Anisocarpus madioides Lowell Ahart 1993-6-16 6971 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) Comment
  CHSC113292  Anthriscus caucalis Lowell Ahart 2014-4-9 19332 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC1950  Anthriscus caucalis A. Goekler 1929-5-15 Butte Bidwell Park. 60 Comment
  CHSC20056  Anthriscus caucalis M. S. Taylor 1975-4-25 497 Butte Abundant along dirt rd, ca. 1/4 mi e of Cohasset Rd, ca. 10 mi ne of Chico. Comment
  CHSC21049  Antirrhinum cornutum M. S. Taylor 1975-10-3 937 Butte On the Sacramento River, ca. 1/4 mi n of the washout on River Rd, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC447661  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC90470  Aphanes occidentalis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11660 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  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
  CHSC104  Apocynum androsaemifolium 1954-5-30 Butte Kimshew Falls near Rag Dump 5, out from Stirling. 1097 Comment
  CHSC52685  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 339 Butte E of Butte Meadows. 1341 Comment
  POM95063  Arabis breweri C. C. Bruce 1897-02 1945 Butte Little Chico Comment
  RSA0126438  Arabis glabra E. B. Copeland 1929-7-29 366 Butte Jonesville. 1550 Comment
  CHSC102997  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC584  Arbutus unedo 1935-4-28 Butte Bidwell grounds, Chico. Comment
  CHSC33970  Arceuthobium abietinum M. S. Taylor; L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  SEINET6630800  Arceuthobium abietinum E. B. Copeland 1930-7-28 Butte Jonesville Comment
  RSA325115  Arceuthobium campylopodum M. S. Taylor 1975-9-19 911 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  RSA632988  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27468 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633006  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27479 Butte Ponderosa Way, south of Cohasset. 750 Comment
  UCD51917  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51568 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11989222  Arctostaphylos manzanita J. T. Howell 1975-1 51104 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CHSC109105  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17774 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC67925  Arctostaphylos manzanita subsp. manzanita James D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1682 Butte Top of N. Table Mtn. at its NW corner. Comment
  SD49843  Arctostaphylos mewukka A. E. Wieslander 1933-6-24 329 Butte Chico quadrangle, 1 mi. E of Paradise on Pearson Road 519 Comment
  UC725750  Arctostaphylos mewukka A. A. Heller 1941-12-26 16342 Butte Neal Rd 3 mi below Paradise Comment
  CAS-BOT-BC38562  Arctostaphylos mewukka subsp. truei John Thomas Howell 1967-6-22 42638 Butte Magalia. 701 Comment
  CHSC41235  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-8-15 2145 Butte Backbone of first ridge east of Camp Creek in the canyon of the North Fork Feather River. Comment
  POM219428  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  RSA4476  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  CAS-BOT-BC47377  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51102 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47384  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51097 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
  CHSC107585  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-7-9 17565 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville. 975 Comment
  CHSC38436  Arctostaphylos viscida subsp. viscida Vernon Oswald 1983-2-14 70 Butte Upper Bidwell Park, Chico, on the S side of Upper Park Rd. just e of the intermittent stream located 0.8 mi E of the power lines. 115 Comment
  CHSC95990  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 46 Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  CAS-BOT-BC137551  Aristida oligantha Lowell Ahart 1976-12-29 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CHSC112524  Aristida oligantha B. Castro; Andy Rogers 2014-7-15 2031 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 0.35 mi ft downstream (W) of its crossing under the Cohasset Hwy bridge. Low flat floodplain on N side of channel excavated and leveled in a 2010 sediment removal project. 54 Comment
  SEINET11686323  Aristida ternipes var. gentilis Unknown 1983-1 4277 Butte along Hwy 32, ca 1 mi E of Chico 100 Comment
  CHSC49508  Aristida ternipes var. hamulosa Vernon Oswald 1985-6-10 1826 Butte Hwy 32 3.1 mi e of Hwy 99. 164 Comment
  CAS-BOT-BC400429  Aristolochia californica John Thomas Howell 1975-6-15 51070 Butte Butte Creek near Chico 60 Comment
  CAS-BOT-BC295839  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 Comment
  UC171429  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte on Big Chico Creek (Chico) Comment
  CHSC39421  Asclepias cordifolia J. D. Jokerst 1984-5-24 2030 Butte North Table Mountain. Edge of Beatson Hollow ca 250 meters north of Cherokee Rd. along the wooded west edge of the canyon. 350 Comment
  SEINET10870123  Asclepias cordifolia Mary Susan Taylor 1980-5-31 Taylor 2775 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC102164  Asclepias speciosa Lowell Ahart 2009-6-19 15944 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC47067  Asclepias speciosa R. A. Schlising; P. Broyles 1988-7-9 4577 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CHSC86422  Aspidotis californica R. D. Fischer; Paul Maslin 2004-2-7 55 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609952E 4408993N. 380 Comment
  SDSU6298  Aster hesperius D. F. Howe 1960-9-20 2987 Butte North of Feather River, 28 miles from Oroville. 518 Comment
  CHSC62550  Astragalus gambelianus L. P. Janeway 1993-5-2 4333 Butte South of Serpentine Point and above Hwy 70. 518 Comment
  JEPS119691  Astragalus gambelianus Lowell Ahart 2012-5-2 17957 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CAS-BOT-BC192800  Astragalus pauperculus A. A. Heller 1928-4-9 14485 Butte Along the Pacific Highway 9 miles north of Chico Comment
  UC1609396  Athyrium distentifolium var. americanum Lowell Ahart 1993-9-8 7160 Butte ca. 1 mi e Snow Mt (n side of ridge) 2072 Comment
  CHSC27912  Athyrium filix-femina M. S. Taylor 1978-7-19 1737 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC90469  Athysanus pusillus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  POM143745  Athysanus pusillus C. F. Baker 1903-4-10 3027 Butte Chico. Comment
  JEPS90672  Atriplex cordulata Vernon H. Oswald 1993-7-29 5734 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road and on s side of Rutherford Road, just e of headquarters complex, 1.75 mi w of Pennington Road); Gray Lodge Wildlife Management Area 19 Comment
  JEPS90674  Atriplex cordulata Dean W. Taylor 1993-8-31 14079 Butte Sacramento Valley, Gray Lodge State Wildlife Area (Westside Zone), 120 m s of Rutherford Rd and public shooting parking lot #5, 1.5 mi e of refuge headquarters Gray Lodge State Wildlife Area; Sacramento Valley, Gray Lodge State Wildlife Area 21 Comment
  UCSB64019  Atriplex lentiformis Ahart, Lowell 1981-11-6 Butte near the entrance to the Gray Lodge Waterfowl Management Area, just west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  UCD97614  Atriplex prostrata L. Ahart 1982-10-11 3855 Butte west of check-in station, Graylodge Wildlife Refuge, 12 miles SW of Gridley. Comment
  CHSC26655  Atriplex triangularis M. S. Taylor 1977-11-10 1524 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in drying creek, ca. 23 mi s of Chico. 30 Comment
  CAS-BOT-BC145880  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near a dirt road, near Lake Oroville, about 0.1 mile northwest of the West Branch Bridge across Lake Oroville. 289 Comment
  RSA769600  Avena fatua L. Ahart 2009-5-8 15665 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  SEINET14287413  Avena fatua L. Ahart 1981-5-24 2835 Butte Peter Ahart Ranch, c. 2 mi N and 0.5 mi east of Honcut 50 Comment
  JEPS115152  Baccharis pilularis Lowell Ahart 2009-11-19 16544 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC42470  Baccharis salicifolia Lowell Ahart 1987-5-6 5498 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC3527  Balsamorhiza deltoidea John Francis 1966-4-30 144 Butte 3.4 miles E of Forest Ranch on Hwy 32. Comment
  CAS-BOT-BC16375  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain. 1524 Comment
  CHSC36683  Barbarea orthoceras R. E. Preston 1982-7-21 347 Butte At roadside; ca. 1/4 mi se of Philbrook Reservoir. 1706 Comment
  SEINET10479072  Bassia hyssopifolia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5145 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC77820  Bellardia trixago Lowell Ahart 2000-4-22 8329 Butte On the south side of Highway 162, about 1/4 mile west of Highway 99, about 10 miles sothwest of Oroville. 32 Comment
  SEINET10473650  Bellis perennis Mary Susan Taylor Taylor 448 Butte Campus of the California State University, Chico. 61 Comment
  CHSC20531  Berberis aquifolium var. repens Pamela Caldwell 1972-3-2 Butte CSUC campus. S side of Bidwell Mansion entrance. Comment
  CHSC46017  Bergia texana Lowell Ahart 1974-9-8 628 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS110451  Bergia texana Lowell Ahart 2006-8-5 13083 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  UC141888  Betula glandulosa Mrs. R. M. Austin July 1896 63 Butte Colby Comment
  HSC103997  Bidens frondosa L. Ahart 2013-11-17 19259 Butte About 5/8 mi. SW of the Enterprise Bridge across Lake Oroville, below the high water line of Lake Oroville, along the sides of McCabe Creek 245 Comment
  RSA0037017  Bidens frondosa Lowell A. Ahart 2013-11-17 19259 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
  POM180850  Bidens frondosa H. F. Copeland 1923-1 862 Butte Nelson Comment
  SEINET10473664  Bidens frondosa Mary Susan Taylor 1978-9-8 Taylor 1877 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC412958  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  CHSC101976  Blennosperma nanum John Copeland 1980-1-19 4 Butte Bordering vernal pool ca. 50 ft SE of locked gate, 5 mile E of Meridian Rd., 1.5 miles N of Why 99N, ca. 5 miles N of Chico. Comment
  CHSC35627  Blennosperma nanum R. E. Preston 1982-2-18 166 Butte Field on S side of Keefer Lane, ca. 1 mi W of Cohasset Hwy; ca. 6 mi N of downtown Chico. 97 Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. Comment
  CHSC103971  Boechera breweri subsp. shastaensis Lowell Ahart 2010-5-7 16612 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
  CHSC41902  Boechera breweri subsp. shastaensis Lowell Ahart 1961-2-26 2 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  CHSC38019  Boechera platysperma R. A. Schlising; K. Tarp 1982-7-24 4347 Butte Extreme e Butte County, e of Stirling City at Ramsey Bar on Kimshew Creek. 1341 Comment
  CAS-BOT-BC14634  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  RSA166345  Boisduvalia glabella D. M. Moore 1960-6-2 99 Butte U.S. 99E 1.2 mi. S of Butte - Tehama county line Comment
  JEPS88224  Bolboschoenus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7757 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (in the ne corner of corner of Tract 7.2, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  POM142188  Boykinia major Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CHSC40383  Boykinia occidentalis Lowell Ahart 1985-6-30 5075 Butte Along a small stream. East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC48892  Boykinia occidentalis Vernon Oswald 1985-6-17 1839 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CHSC48894  Boykinia occidentalis Vernon Oswald 1983-6-17 703 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 5 - 10 ft above the summer level of the creek. 91 Comment
  RSA443119  Boykinia occidentalis L. Ahart 1985-6-30 5075 Butte E of the dirt road to the Forbestown Res. About 2.5 miles NE of Forbestown. 869 Comment
  CAS-BOT-BC145680  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1/8 mile west of Oroville Quincy Highway, 1.25 mile south of the Berry Creek School. Northeast of Oroville, section 5. 400 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
  SEINET10448436  Brassica geniculata Lowell Ahart 1985-7-24 Ahart 5157 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  RSA724877  Brickellia californica L. Ahart 2006-9-11 13335 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  CHSC76336  Brickellia greenei L. P. Janeway 1999-7-17 6505 Butte On northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  CAS-BOT-BC145538  Briza minor Lowell Ahart 1980-5-4 2217 Butte Near Hurleton. 600 Comment
  CHSC4407  Briza minor R. L. Smith 1966-5-10 12 Butte Butte Creek Canyon 4 mi. e of Skyway. Comment
  CHSC6667  Briza minor Marilyn Lee 1968-4-19 126 Butte West side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S. E. of cemetary, Table Mt. 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
  CHSC38764  Brodiaea californica var. californica Vernon Oswald 1983-5-9 460 Butte Upper Bidwell Park, Chico, ca. 1600 ft e of Parking Area N (Salmon Hole). 182 Comment
  CHSC78755  Brodiaea californica var. californica L. P. Janeway 2000-5-14 6724 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  UC768722  Brodiaea californica var. californica R. F. Hoover 1936-5-21 1172 Butte 3 mi n Cana Comment
  CAS-BOT-BC484556  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Sioerra Nevada at Butte Meadows 1219 Comment
  POM264783  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte 3 miles SW of Paradise, Sierra Nevada foothills. 305 Comment
  RSA256664  Brodiaea minor Dave Knorr 1974-4-20 124 Butte On Pentz Road near intersection with Clark Road. Comment
  CHSC51935  Brodiaea sierrae L. P. Janeway 1987-5-20 2070 Butte Above Hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC92936  Brodiaea sierrae L. P. Janeway 2005-7-16 8497 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  RSA712796  Brodiaea sierrae L. P. Janeway 2005-6-26 8428 Butte South-facing slope 0.4 km. south of top of Batchelor Point, 0.6 km. east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  CAS-BOT-BC486480  Brodiaea sierrae John Thomas Howell 1955-6-14 30436 Butte Magalia 731 Comment
  SEINET10533863  Brodiaea volubilis A. Arthur Heller 1913-3-28 Heller 10765 Butte Ditch along Table Mountain 8 miles north of Oroville. 600 feet. Comment
  CDA1783  Bromus alopecuros L. Ahart 2002-5-15 9662 Butte About 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine. Comment
  RSA700275  Bromus carinatus L. Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1913 Comment
  CHSC87811  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 10989 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  SEINET256388  Bromus caroli-henrici Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile N and 1/4 mile E of Honcut, about 12 miles S of Oroville 37 Comment
  CHSC27294  Bromus catharticus P. Moyer 1972-4-16 184 Butte CSUC campus. S bank Chico Ck., w of New Dorm Bridge. 60 Comment
  CHSC6668  Bromus diandrus Marilyn Lee 1968-3-15 109 Butte East side of Cohasset Rd., 100 yards N. of entrance to Chico Airport. Comment
  CDA1830  Bromus japonicus L. Ahart 1998-6-3 8015 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  JEPS113792  Bromus japonicus Lowell Ahart 2007-6-3 13976 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CAS-BOT-BC162464  Bromus laevipes Lowell Ahart 1983-6-15 4056 Butte Sierra Nevada. On high banks of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mile north and 3 miles east of Honcut. 50 Comment
  RSA718306  Bromus laevipes L. P. Janeway 2006-6-8 8829 Butte Northern High Sierra Nevada. Near road long west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. 1021 Comment
  CHSC106861  Bromus madritensis subsp. rubens Lowell Ahart 2011-5-1 17345 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
  CHSC27292  Bromus madritensis subsp. rubens P. Moyer 1972-4-16 191 Butte CSUC Campus. S bank Chico Ck., between Warner St. and New Dorm Bridge. 60 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  UC1609036  Bromus orcuttianus Lowell Ahart 1993-7-22 7072 Butte about 5 1/2 air mi ne of Feather Falls (on w side of dirt rd about 1/2 mi nw of Camp 18) 1097 Comment
  SEINET10514795  Bromus racemosus Lowell Ahart 1970-5-12 Ahart 52 Butte Ahart Ranch. On dry soils, very common. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  JEPS120094  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC108058  Bulbostylis capillaris Matt Simenc; Tim Hanson, Melanie Williams, Nicole Habecker 2011-6-22 Butte Northern High Sierra Nevada. Plumas National Forest; northwest facing slopes near the top of the ridge on the southeast side of Martin Creek, 1.9 air miles northeast of Madrone Lake. 755 Comment
  CHSC82504  Bulbostylis capillaris Lowell Ahart; John Dittes 2002-6-17 9720 Butte About 150 yards southeast of Lumpkin Ridge Road, about 2 miles east of the intersection of Lumpkin Ridge Road, County Road, and road to Fall River, about 6 3/4 miles (air) northeast of Feather Falls. 1296 Comment
  JEPS94764  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  JEPS98571  Bulbostylis capillaris Lowell Ahart 2000-6-6 8455 Butte 5 mi(air)E of Oroville Dam (in tire ruts, bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CAS-BOT-BC185473  Calamagrostis canadensis Lowell Ahart 1987-10-17 5917 Butte Along the East Fork of the Last Chance Creek, about 0.5 mile northwest of Jones Meadow. 1676 Comment
  CHSC47393  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 4595 Butte In a small pool, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  JEPS95736  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC114988  Callitriche marginata Lowell Ahart 2015-4-28 20062 -A Butte 50 yards southeast of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC29786  Calocedrus decurrens M. S. Taylor 1980-5-27 2698 Butte On Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC45837  Calocedrus decurrens Lowell Ahart 1973-1-14 147 Butte Along the edge of the dirt road to Forbestown Reservoir, about 3 miles northeast of Forbestown. 762 Comment
  CHSC99638  Calocedrus decurrens H. Koeth; K. Schierenbeck 2007-2-13 Butte Hwy 32, Forest Ranch. UTM 10 615916E 4423666N. 1018 Comment
  SBBG28817  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, W of North Willow Crk 1650 Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  UC1134481  Calochortus luteus G. E. Sindel 1934-4-25 70 Butte 3 mi ne Honcut; Marysville Quad. 30 Comment
  CAS-BOT-BC491862  Calochortus luteus Lewis S. Rose 1945-5-12 45047 Butte Richardsons Springs 304 Comment
  POM109677  Calochortus luteus C. C. Bruce 1897-04 2119 Butte Little Chico Comment
  CAS-BOT-BC492563  Calochortus minimus H. F. Copeland 1920-7-11 69 Butte Scitch John meadows 1828 Comment
  CHSC24843  Calochortus monophyllus T. L. Reynolds 1976-4-23 55 Butte 0.3 mi ne of Covered Bridge, 7.2 mi ese of Chico. 121 Comment
  CHSC57549  Calochortus monophyllus Suzanne Hermansen 1991-4-20 25 Butte ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  CAS-BOT-BC492602  Calochortus monophyllus C. C., Mrs. Bruce 1893-5-1 2404 Butte Foot hills Comment
  RSA126004  Calochortus monophyllus E. K. Balls 1957-5-23 22526 Butte State Highway 32, 11.5 miles south from Lomo 945 Comment
  CAS-BOT-BC493341  Calochortus superbus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC40406  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC494317  Calochortus tolmiei A. A. Heller 1918-5-5 s.n. Butte Near Magalla in the yellow pine and oak belt (Q. Kelloggii) on serpentine. 1072 Comment
  CHSC53697  Caltha leptosepala var. biflora Kirsten Tarp 1981-7-19 34 Butte Ca. 24 air miles ne of Chico; in meadow. 1706 Comment
  CHSC71459  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC97005  Calycadenia multiglandulosa B. Castro; L. P. Janeway 2005-6-5 1481 Butte Ca 6 air mi SE of Chico, in bottom of canyon SE of Neal Rd, ca 100 ft nw of intermittent creek. 85 Comment
  UCD129710  Calycadenia multiglandulosa Lowell Ahart 1972-10-4 144 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44368  Calycadenia oppositifolia Lowell Ahart 1988-5-30 6033 Butte Along Poe Power House Road, about 1/10 mile north of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  POM253182  Calycadenia oppositifolia A. A. Heller 1938-5-22 s.n. Butte Near the Chico Airport Comment
  UC88991  Calycadenia oppositifolia Mrs. R. M. Austin 1886-5-1 169 Butte Iron Canyon Comment
  UCD129788  Calycadenia oppositifolia L. P. Janeway 1988-5-29 2701 Butte Little Chico Creek, ca. 2 air miles south of Ten Mile House. 243 Comment
  SEINET10473676  Calycadenia oppositifolia Mary Susan Taylor 1979-6-12 Taylor 2294 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  SEINET10473678  Calycadenia oppositifolia Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4086 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  JEPS20224  Calycadenia spicata R. F. Hoover 1938-8-2 3717 Butte 7 mi se Chico Comment
  UCD129887  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte about 0.5 mile east of the western end of Jackson Ranch Ridge; 0.5 mile south of Road 21N25Y. Top of steep slope overlooking Frey Creek. 1066 Comment
  CDA13915  Calycanthus occidentalis G. F. Hrusa, T. D. Wilfred 1997-7-3 13982 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC94936  Calycanthus occidentalis K. Lang 2005-5-5 11 Butte Lime Saddle Boat Launch, near Oroville. 279 Comment
  POM370298  Calycanthus occidentalis M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  UCD166582  Calycanthus occidentalis Dylan O. Burge 2016-8-6 2122 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CHSC105512  Calyptridium monospermum Lowell Ahart 2010-9-28 17251 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC30088  Calyptridium umbellatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3212 Butte Humboldt Peak, on the top. 2154 Comment
  JEPS105268  Calystegia atriplicifolia subsp. buttensis Dean W. Taylor 1995-8-6 15398 Butte near Concow Reservoir (ca. 6 air miles E of Paradise) along Hoffman Road 0.3 miles West of Concow Road; Lassen National Forest 670 Comment
  RSA716320  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2005-5-29 8401 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UCD126116  Calystegia malacophylla H. F. Copeland 1930-7-20 s.n. Butte Jonesville. Comment
  CHSC100834  Calystegia occidentalis M. S. Taylor 1982-6-24 4735 Butte At end of spur rd along Flea Mt Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70. 1066 Comment
  CHSC46785  Calystegia occidentalis M. S. Taylor 1982-6-24 4735 Butte At end of spur rd along Flea Mt Ridge, ca. 1.5 mi of Flea Mt., ca. 9 mi ne of Jarbo Gap on Hwy 70. 1066 Comment
  CHSC34979  Calystegia occidentalis subsp. occidentalis R. A. Schlising 1974-6-5 3136 Butte 9.9 mi NE of Chico along Hwy 32. 512 Comment
  CAS-BOT-BC496965  Camassia leichtlinii subsp. suksdorfii Lowell Ahart 1982-6-1 3528 Butte A little south of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  SEINET10463241  Campanula prenanthoides Carter 1965-7-6 Carter 276 Butte 1.4 miles north of Mountain House on Oroville-Quincy road on east bank above road 914 Comment
  SEINET10840318  Campanula prenanthoides Taylor 1978-7-18 Taylor 1673 Butte On west side of Highway 32 on edge of Yellow Pine Forest, in dry open area, about 0.25 mile north of Forest Ranch 718 Comment
  CHSC103660  Capsella bursa-pastoris Lowell Ahart 2010-2-13 16567 Butte Corral west of metal barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC11084  Capsella bursa-pastoris Lowell Ahart 1965-3-10 Butte Peter Ahart Ranch, Honcut. 36 Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  CHSC33227  Cardamine breweri R. E. Preston 1981-6-17 90 Butte Side channel of Butte Creek; ca. 3.2 km ne of Butte Meadows, near Cherry Hill. 1415 Comment
  CHSC108843  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte Around rocks, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC28758  Cardamine californica J. D. Jokerst 1979-2-25 168 Butte N. bank of Rock Cr., 100 met. N. of the intersection of Rock Cr. Rd. and Cohasset Hwy. Comment
  UCD114500  Cardamine californica R. E. Preston 1981-2-28 45 Butte 50 m east of Coutelenc Road, 300 m north of its junction with The Skyway, Magalia. 700 Comment
  CAS-BOT-BC37874  Cardamine oligosperma Peter H. Raven 1954-4-17 6614 Butte Along Feather River, Oroville. Comment
  CHSC39612  Cardamine oligosperma Lowell Ahart 1983-3-28 3910 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC61208  Cardamine oligosperma Vernon H. Oswald; Lowell Ahart 1993-3-24 5246 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CAS-BOT-BC38056  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC88087  Carduus pycnocephalus R. D. Fischer 2004-4-18 172 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Lower Yahi Trail between Alligator Hole and Day Camp, 75 ft. w. Carex barbarae trail sign. UTM: 10606018E 4403002N. 95 Comment
  RSA699523  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east side addition along Hwy 32. Along Guardian Trail north of Disk Golf Course 314 Comment
  JEPS117517  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico 71 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
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC94345  Carex amplifolia Lowell Ahart 2006-7-16 12968 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS105638  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1091 Comment
  POM218977  Carex athrostachya E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1550 Comment
  SD469  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville; forming large dense tufts by irrigation ditch. 1550 Comment
  CHSC43867  Carex aurea Vernon Oswald 1987-5-2 2363 Butte East side of Little Chico Creek Canyon ca. 1 mi se of Forest Ranch. 609 Comment
  UC600699  Carex aurea H. F. Copeland 1920-8-1 171 Butte Jonesville Comment
  CHSC43915  Carex barbarae L. P. Janeway 1987-6-8 2167 Butte Sandy flat along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  CAS-BOT-BC19412  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  UCD140164  Carex bolanderi L. P. Janeway; B. Castro, Pat Kelly 1987-5-10 2032 Butte Butte Creek Trail, above Butte Creek ca. 1 mile south of the Doe Mill Road bridge. 609 Comment
  CAS-BOT-BC19600  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mile east on a spur road from the Concow Road, which is 1.0 mile southwest of Jones Meadow. 1798 Comment
  CHSC41293  Carex cusickii S. C. Morey 1983-7-21 489 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44066  Carex cusickii S. C. Morey 1983-7-23 575 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCD140240  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte South side of Butte Creek 1/2 mile west of Cherry Hill. 1402 Comment
  CAS-BOT-BC313736  Carex cyrtostachya P. F. Zika; B. Wilson; L. Ahart; L. Janeway 2011-8-5 25715 Butte Forest Rd 20N03 (Moreville Ridge Rd), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, Northern Sierra Nevada highlands (n SNH) 1075 Comment
  CHSC52851  Carex densa L. P. Janeway 1987-5-7 2025 Butte Edge of Cottonwood Rd 2.2 mi W of Table Mtn Rd at Cottonwood Cr. 48 Comment
  CHSC68373  Carex densa L. P. Janeway 1996-5-27 4984 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  RSA0036033  Carex echinata subsp. echinata Lowell A. Ahart 2010-9-28 17265 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
  CAS-BOT-BC20001  Carex feta J. D. Jokerst 1984-5-19 2025 Butte At the edge of Highway 70. Comment
  CHSC45711  Carex feta L. P. Janeway 1987-6-8 2183 Butte South-draining seep along dirt road, 3.0 mi S of Big Bar Mtn. 1021 Comment
  SEINET7558592 Image available Carex feta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11405 Butte Ca 4 mi NE of community of Butte Meadows, ca 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  HSC87284  Carex feta L. P. Janeway 1988-5-19 2664 Butte Along Rock Creek at the Rock Creek Rd. Bridge 113 Comment
  UCD140309  Carex feta L. P. Janeway 1988-6-14 2783 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  SEINET8067785 Image available Carex fracta L. Janeway, Gog, L 2008-1 3188 Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC45237  Carex geyeri L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2493 Butte Near Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
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Nov 14 2011
  CAS-BOT-BC28377  Carex gracilior Lowell Ahart 1977-6-16 1440 Butte Peter Ahart Ranch, Honcut. Along the banks of North Honcut Creek. 50 Comment
  JEPS87675  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte about 3 1/2 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET11152735 Image available Carex hoodii Lowell Ahart 2010-1 17201 Butte 1918 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
  SEINET4231762 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC113421  Carex laeviculmis Lowell Ahart 2014-7-2 19537 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  UC689958  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se Butte Meadows; Paynes Creek Quadrangle 1554 Comment
  JEPS105281  Carex lemmonii Dean W. Taylor 1995-8-6 15394 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Sierra Nevada 1706 Comment
  RSA700243  Carex lemmonii L. Ahart 2004-7-23 11296 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road., About 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  CHSC82147  Carex mariposana L. P. Janeway 1987-6-27 2338 Butte Canyon of Little Kimshew Creek, along road 0.9 mi N of the Concow Road. 1508 Comment
  SEINET12649605 Image available Carex mesochorea Lowell Ahart 2010-1 16579 Butte 64 Comment
  CAS-BOT-BC32156  Carex multicaulis Herbert Faulkner Copeland 1931-6-10 1546 Butte Woods between Willow and Colby Creeks. Jonesville Comment
  CHSC42368  Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 1 1/2 miles north-east of Forbestown. 853 Comment
  UC532223  Carex multicaulis H. F. Copeland 1931-6-10 1546 Butte woods between Willow Creek and Colby Creek; Jonesville Comment
  CHSC52258  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2490 Butte Meadow along Humbug Summit Rd ca 5 1/2 mi N of Inskip, at the Cornelia Lott Sank Memorial Spring. 1539 Comment
  CHSC44117  Carex nervina L. P. Janeway 1988-7-29 3116 Butte Along Butte Cr where Humboldt Rd crosses near Cherry Hill. 1402 Comment
  CHSC88223  Carex nervina Lowell Ahart 2004-7-23 11297 Butte On the sides of a small stream, about 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1586 Comment
  CHSC52247  Carex nudata L. P. Janeway 1987-6-20 2257 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  CHSC61220  Carex nudata Lowell Ahart 1993-4-8 6931 Butte On the banks and sides of a deep almost dry ditch, on the south side of the Biggs Princeton Road, about 1 1/4 miles west of Biggs. 30 Comment
  CDA2571  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  CHSC44951  Carex praegracilis L. P. Janeway 1987-5-20 2056 Butte Near Gold Flat and Hodap Cr and the jct of Lunt and Nelson Bar Roads. 457 Comment
  CHSC47136  Carex praegracilis L. P. Janeway; Vern H. Oswald 1989-4-17 3222 Butte Along E side of Butte Cr 2.4 mi S of Biggs-Princton Rd (Afton Rd). 18 Comment
  CHSC47052  Carex retroflexa var. texensis L. P. Janeway 1989-6-1 3270 Butte Campus of California State University, Chico; semi-natural area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  CHSC48557  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3137 Butte The ridge SE from Snow Mtn. N edge of ridgetop. 2103 Comment
  CHSC44947  Carex simulata L. P. Janeway; R. A. Schlising 1988-8-2 3150 Butte Ca 1 1/2 air mi NW of Butte Meadows; along Cascade Cr ca 1/2 mi upstream of the Soda Springs USFS campground. 1143 Comment
  CHSC55448  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-1 2915 Butte On the NE-facing flank of Snow Mountain, and above Summit Lake. 2011 Comment
  CAS-BOT-BC115305  Carex utriculata Herbert Faulkner Copeland 1933-7-21 s.n. Butte By Butte Creek not far above Colby, vicinity of Jonesville. Comment
  UC1562479  Carex vulpinoidea Vernon Oswald and Lowell Ahart 1990-5-26 4254 Butte s Oroville (Pacific Heights Rd. entrance, on the e side of the Feather River); Oroville Wildlife Area 32 Comment
  CDA13262  Carex xerophila G. F. Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake [Cuotolenc Rd.], at N boundary of Magalia. 709 Comment
  CHSC116953  Carpenteria californica Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave. 60 Comment
  CAS-BOT-BC248933  Castilleja A. A. Heller 1913-6-7 10808 Butte Near Stirling 1074 Comment
  SEINET14183557  Castilleja W. Short 1959-4-11 14 Butte US Hwy 40, 15 miles E of Oroville. 549 Comment
  CHSC52372  Castilleja affinis J. D. Jokerst 1985-3-31 2189 Butte Top of North Table Mountain at its west edge ca. 1/2 mile NW of Phantom Falls adjacent to an unnamed creek and waterfall. 396 Comment
  CHSC101323  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC25364  Castilleja applegatei subsp. pinetorum Marc P. Hayes 1977-3-20 1 Butte Ca. 2.6 km nw of Jarbo Gap, 4.1 km ssw of Pulga, 10 m on n side of Hwy 70. 650 Comment
  JEPS80633  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte 2.2 mi s Dark Canyon Rd. junction with Big Bend Rd. (e side of Dark Canyon Rd, ca 3 air mi s of Jarbo Gap on Hwy 70); Berry Creek Quad. 426 Comment
  UC426960  Castilleja applegatei subsp. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville Comment
  CAS-BOT-BC255463  Castilleja applegatei var. pinetorum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  SBBG28928  Castilleja arachnoidea E. B. Copeland 1930-7-12 Butte above Jonesville, under N brow of ridge 2100 Comment
  CHSC114956  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte On the south side between the north and south branch of Coal Canyon, about 1/4 mile southwest of Coal Canyon Falls, about 1-1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. 371 Comment
  CHSC4178  Castilleja attenuata Kathy Sommarstrom 1967-3-25 5 Butte Found in Bidwell Park, 1 mi east of Golf course to the left side of the road. 76 Comment
  CHSC83922  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  JEPS103418  Castilleja attenuata Lowell Ahart 2002-4-24 9530 Butte In a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  UCD122338  Castilleja attenuata M. Vincent 1965-4-16 635 Butte Pentz rd. 1/2 mile south of Pentz store. Comment
  CHSC47505  Castilleja campestris subsp. campestris Lowell Ahart 1978-5-1 1688 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS4561  Castilleja campestris subsp. campestris Harry A. Dutton 1921-4-25 Butte sw of Oroville Comment
  CHSC11901  Castilleja miniata E. B. Copeland 1929-7-25 467 Butte Jonesville. 1500 Comment
  CHSC1724  Castilleja pruinosa H. Summers 1929-3-11 Butte Richardson Springs Road. 152 Comment
  UC426965  Castilleja tenuis E. B. Copeland 1930-6-28 470 A Butte Scotch John meadow Scotch John meadow, Jonesville; Jonesville 1700 Comment
  CHSC104014  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC195581  Catapodium rigidum Lowell Ahart 1976-7-4 s.n. Butte North Honcut Creek about 2 miles ne. of Honcut Comment
  UC175535  Ceanothus cordulatus A. A. Heller 1913-6-7 10828 Butte near Stirling (West Branch of the North Fork of the Feather River) Comment
  CAS-BOT-BC48818  Ceanothus cuneatus A. A. Heller 1914-3-19 11210 Butte Canyon of Big Chico creek 76 Comment
  CHSC20961  Ceanothus cuneatus M. S. Taylor 1974-3-19 87 Butte On creek side of Humbug Road, in vicinity of Honey Run Covered Bridge. Comment
  SEINET10493633  Ceanothus cuneatus Mary Susan Taylor 1974-3-19 Taylor 87 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CHSC32834  Ceanothus integerrimus W. Michael Foster 1981-4-24 9 Butte Along both sides of Hwy 70, ca. 2 mi nw of Jarbo Gap and ca. 20 n of Oroville. 609 Comment
  RSA399894  Ceanothus integerrimus M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  UC774521  Ceanothus integerrimus Carl B. Wolf 1941-7-23 11050 Butte 5 mi below Magalia (on Oroville Rd.); Northern Sierra Nevada Comment
  RSA25681  Ceanothus jepsonii Carl B. Wolf 1941-7-23 11048 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
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May 17 2021
  CAS-BOT-BC52002  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SEINET5339369  Ceanothus prostratus W. Short 1959-4-11 2 Butte 10 miles from junction of US 40 and Calif. 20 west, 100 ft. from highway. Comment
  CDA18839  Centaurea diffusa M. Stewart, Riley, Rick Keck 1997-8-12 PDR 1145796 Butte along N/S Humboldt Rd., 1.2 miles west of USFS CDF fire station, Butte Meadows. 0 Comment
  CHSC101821  Centaurea melitensis Lowell Ahart 2009-5-23 15769 Butte On the sides 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
  CHSC107900  Centaurea melitensis L. P. Janeway 2011-6-29 10413 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC93860  Centaurea melitensis Lowell Ahart 2006-6-9 12659 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CHSC69446  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  JEPS13269  Centaurium muehlenbergii Rimo Bacigalupi with G. T. Robbins 1955-7-15 5302 Butte about 2 mi above Hooker Oak (along dirt road leading up Big Chico Creek Canyon) 106 Comment
  CHSC42710  Centaurium tenuiflorum Lowell Ahart 1987-6-9 5744 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC70817  Centranthus ruber B. Castro 1995-4-13 559 Butte N edge of town of Oroville, on open, disturbed cobbly flat on the S side of the Feather River, just E of its crossing under Hwy 70. On S side of levee, in vacant lot by residential area. 51 Comment
  CAS-BOT-BC288528  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte Hills near Big Chico Creek, E of Chico Comment
  JEPS13270  Centromadia fitchii Rimo Bacigalupi with G. T. Robbins 1955-7-15 5301 Butte 3.5 mi e Chico (one-half mi s of the Hooker Oak) 80 Comment
  CAS-BOT-BC271506  Centromadia parryi subsp. rudis M. S. Taylor; L. Ahart 1982-5-28 4345 Butte Gray Lodge Waterfowl Management Area, N side of Ruthrford Road, ca. 1/8 mi W of its jct with Pennington Road at the checking station, ca. 12 miles southwest of Gridley 21 Comment
  CHSC4408  Cephalanthera austiniae R. L. Smith 1966-5-28 6 Butte 3 mi nw of De Sabla. Comment
  SEINET9801333 Image available Cephalanthus occidentalis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UC924237  Cephalanthus occidentalis var. californicus H. S. Reed 1939-7-10 298 Butte 5 mi nw Chico (banks of Sacramento River); Sacramento River 60 Comment
  CHSC10648  Cerastium glomeratum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113370  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC46350  Cerastium glomeratum Lowell Ahart 1989-5-23 6243 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC179513  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  UCR190822  Cercis occidentalis Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  RSA104162  Cercocarpus betuloides R. M. Austin 1883-04 s.n. Butte [Unspecified] Comment
  CAS-BOT-BC276480  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  CAS-BOT-BC277629  Chaenactis glabriuscula var. megacephala Mrs. C. C. Bruce 1897-4-1 1988 Butte Forest Ranch Comment
  CHSC3221  Chamaecyparis lawsoniana Virginia Hagaman 1966-3-5 47 Butte Lower Bidwell Park. Comment
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Jul 25 2018
  CHSC47428  Chamaesyce maculata Lowell Ahart 1974-6-3 472 Butte In a garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC94599  Chamaesyce maculata Lowell Ahart 2006-9-11 13284 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
  JEPS108966  Chamaesyce maculata Lowell Ahart 2006-9-13 13327 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  JEPS121304  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  POM215884  Chamaesyce maculata Willis H. Wheeler 1935-10-24 296 Butte Foreign Plant Introduction Sta., Chico. 76 Comment
  CHSC38440  Chamaesyce nutans Vernon Oswald 1983-7-8 844 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  CHSC42958  Chamaesyce nutans Lowell Ahart 1987-7-3 5772 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  CHSC97716  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-10-31 14523 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
  SEINET13709719  Chamaesyce serpyllifolia Lowell William Ahart, Lowell William Ahart 1984-1 4785 Butte 5 Mi. SW Oroville Comment
  SEINET10529949  Cheilanthes californica Mary Susan Taylor 1981-2-11 Taylor 3381 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  SEINET10838812  Chenopodium botrys Lowell Ahart 1985-11-7 Ahart 5237 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
  CHSC60678  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-2-27 5231 Butte Near rimrock on the N side of the first canyon (unnamed) on the SE side of Neal Rd., just east of the double power transmission lines. 121 Comment
  CHSC34775  Chenopodium strictum var. glaucophyllum L. Ahart 1981-11-6 3230 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. 35 Comment
  CHSC109785  Chenopodium vulvaria Lowell Ahart 2012-10-20 18488 Butte On the south side of the paved park road and Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC11806  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville. 1600 Comment
  POM174392  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte Jonesville. Comment
  CHSC71636  Chimaphila umbellata Vernon H. Oswald; Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Rd. 1463 Comment
  CDA38838  Chimaphila umbellata Vernon H. Oswald & Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  RSA718387  Chimaphila umbellata subsp. occidentalis L. Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way). On Cohasset Ridge, about 3.5 miles (air) northeast of Cohasset. 1131 Comment
  CHSC84158  Chondrilla juncea Lowell Ahart 2003-6-30 10331 Butte Near the water pipe where it comes out of the mountain, on the north side of the Ponderosa Reservoir, about 2 miles (air) north of Forbestown. 481 Comment
  CHSC99754  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 482 Comment
  JEPS104397  Chondrilla juncea Lowell Ahart 2003-7-10 10372 Butte On the n slope of Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 296 Comment
  POM105863  Chorizanthe membranacea R. M. Austin 1883-5-1 s.n. Butte Iron Canyon, Big Chico Creek Comment
  CAS-BOT-BC252673  Chorizanthe membranacea David D. Keck 1933-5-30 2406 Butte 3.0 miles southwest of Richardson Springs Comment
  CHSC45529  Chorizanthe polygonoides var. polygonoides L. P. Janeway 1988-5-9 2663 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  CAS-BOT-BC36367  Chrysolepis sempervirens Saichi Kawahara 1968-5-5 397 Butte Bull and Skyway Road 1554 Comment
  CHSC3367  Chrysolepis sempervirens M. Gregg 1966-4-23 105 Butte 2 miles south of Butte Meadows on Bull Run Rd. Along side of road. Comment
  SEINET10938010  Chrysothamnus nauseosus Mary Susan Taylor 1975-9-19 Taylor 920 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  SEINET12328380  Cicendia quadrangularis M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5398 Butte ca 0.5mi n of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise? Comment
  UC1586527  Cinna latifolia Lowell Ahart 1991-8-25 6708 Butte along Haphazard Creek (about 1 mi nw of Rogers Cow Camp, w of Oroville-Quincy Hwy about 6 mi ne of Brush Creek); along Haphazard Creek 1219 Comment
  SEINET10453141  Circaea alpina subsp. pacifica Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5116 Butte 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. Comment
  CHSC302  Cirsium andersonii E. Walker 1932-7-25 Butte Magalia. Comment
  CHSC8115  Cirsium andersonii Dave Isle 1969-5-20 484 Butte 1/2 mile E. of golf course on N. side of road in Upper Bidwell Park, Chico. 59 Comment
  CAS-BOT-BC284378  Cirsium arvense J. R. Keck; E. H. Remmers 1974-9-4 s.n. Butte 0.2 mile north of Pinkard Creek inlet to Lost Creek Reservoir, N.E. of Clipper Mills Comment
  CAS-BOT-BC278081  Cirsium douglasii var. breweri A. A. Heller 1914-8-7 11652 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC288038  Cirsium occidentale var. venustum Lowell Ahart 1983-6-21 4075 Butte Along Bloomer Hill Road about 3/4 mile west of the Oroville Quincy Highway about 15 miles north-east of Oroville 425 Comment
  CHSC37273  Cirsium vulgare L. Ahart 1982-8-10 3739 Butte Around rice field, Peter Ahart Ranch, ca. 2 1/2 mi n and 1/2 mi e of Honcut. 50 Comment
  CHSC6654  Cirsium vulgare M. MacArthur 1968-6-22 280 Butte Ca. 20 ft. from SE side of Big Chico Creek, near Esplanade bridge, Chico State College. 60 Comment
  CAS-BOT-BC438982  Cistanthe monosperma A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  CAS-BOT-BC228752  Cistanthe umbellata A. A. Heller 1914-6-24 11512 Butte West side of the Sierra Nevada at West Branch 1036 Comment
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC84865  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7809 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  JEPS105639  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt, Adam Henderson 2003-6-3 7803 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.5 km southwest of mouth of Bean Creek 283 Comment
  JEPS113205  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, a 844 Comment
  CAS-BOT-BC164523  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte Near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 304 Comment
  CHSC94043  Clarkia gracilis subsp. albicaulis R. D. Fischer 2005-9-9 710 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch on the Big Chico Creek Ecological Reserve and on the north side of the hwy. at Crown Point Road junction. 518 Comment
  RSA144790  Clarkia gracilis subsp. albicaulis G. I. Stage, R. Thorp 1959-6-21 59 -120 Butte 11.9 miles north-east of Chico. Comment
  UC1186583  Clarkia gracilis subsp. albicaulis G. I. Stage, R. W. Thorp 1959-6-21 59 -120 Butte 11.9 mi ne Chico (Highway 32) Comment
  CAS-BOT-BC171881  Clarkia gracilis subsp. gracilis Lowell Ahart 1980-4-30 2125 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC39033  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-6-30 4176 Butte Concow Reservoir, E of Paradise and N of Oroville; SE of the Reservoir, along the road. 500 Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 Comment
  CHSC70738  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4430 Butte Southwestern end of Watson Ridge; about 1.8 mi east-northeast of Bald Rock Dome; about 0.7 mi northwest of Fall River. Road cutbank on south-trending ridge nose. 1097 Comment
  RSA646257  Clarkia mosquinii subsp. xerophila T. Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  CHSC1108  Clarkia purpurea subsp. quadrivulnera R. Carter 1964-5-1 75 Butte North Table Mt., 300' NW of where old Cherokee Rd. comes over S rim. 396 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
  JEPS107749  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UCD104931  Clarkia purpurea subsp. quadrivulnera L. D. Gottlieb 1987-8-22 8753 Butte On Centerville Road, 1.8 miles S of Nimshew Road. Comment
  CHSC3528  Clarkia purpurea subsp. viminea John Francis 1966-5-7 155 Butte 3.6 miles N. of intersection of Pentz Rd. and Hwy. 99E., on Pentz Rd. Beside road. Comment
  CHSC59115  Clarkia rhomboidea L. P. Janeway 1991-6-1 3980 Butte Southwest-facing cut-bank of Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. 512 Comment
  RSA512848  Clarkia rhomboidea J. T. Howell 1967-6-22 42645 Butte Sierra Nevada: 3 miles northwest of Pulga Bridge, canyon of the Feather River North Fork. Comment
  UCD104980  Clarkia rhomboidea L. Ahart 1983-6-26 4118 Butte About 15 miles NE of Oroville, about 2 miles SE of intersection of the Oroville/Quincy Highway and Ponderosa Way. 500 Comment
  UC172865  Clarkia unguiculata A. A. Heller 1913-5-28 10767 Butte 8 mi n Oroville; Table Mountain 182 Comment
  CAS-BOT-BC32912  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville, 0.4 km E of the Jonesville Hotel, above S bank of Jones Creek 1550 Comment
  CHSC43719  Claytonia palustris Vernon Oswald 1983-6-22 738 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  SEINET4855086  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville: S bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. 1550 Comment
  CAS-BOT-BC439429  Claytonia parviflora subsp. parviflora A. A. Heller 1919-4-12 13100 Butte Cherokee Mine Comment
  CHSC10853  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10572709  Claytonia perfoliata Mary Susan Taylor 1973-1 Taylor 45 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CAS-BOT-BC443703  Claytonia rubra M. S. Taylor 1982-5-23 4510 Butte S side of hwy 70, by Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  SEINET10962339  Claytonia rubra Mary Susan Taylor 1981-4-28 Taylor 3564 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  CHSC28634  Claytonia rubra subsp. rubra M. S. Taylor 1979-3-31 1976 Butte Lickey Ranch, along Ishi trail, ca. 1/2 mi ne of Concow Rd, and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC32676  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-24 3432 Butte S side of Hwy 70 near creek entrance opposite Cresta Poserhouse. 487 Comment
  CHSC45389  Claytonia rubra subsp. rubra Vernon Oswald 1984-5-9 1177 Butte Calif. Hwy 32, 12.0 mi n of Forest Ranch (between Forest Ranch and Loma). 1158 Comment
  CHSC40059  Clematis lasiantha R. M. Austin 1896-5-1 Butte Comment
  CHSC65824  Clematis lasiantha Deborah Simmons 1995-4-9 1 Butte On trail ca. 100 ft. s of Feather River Hospital, ca. 3/4 mi south of trailhead in Paradise. 548 Comment
  CHSC52786  Clematis ligusticifolia Lowell Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, about 5 miles north-east of Forbestown. 426 Comment
  CHSC29382  Clintonia uniflora R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3770 Butte Near Strawberry Valley, 2.2 mi N of La Porte Road (=1.2 mi S of S end dam at Sly Cr. Red.), at Strawberry Valley Cr. 39 degrees 34' N 121 degrees 7' W. 1059 Comment
  CAS-BOT-BC238019  Collinsia Jim Riley 1923-4-2 s.n. Butte Richardson Springs Comment
  CHSC38685  Collinsia heterophylla Vernon Oswald 1983-4-18 343 Butte Upper Bidwell Park, Chico, on the north rim ca. 2000 ft w of the power lines. 195 Comment
  RSA408294  Collinsia heterophylla Michael A. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Comment
  CHSC43173  Collinsia parviflora R. Banchero 1980-6-2 184 Butte 8.2 mi ne of jct of Humbolt Rd and Hwy 32. 1463 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CDA31999  Collinsia tinctoria L. Ahart 2008-5-3 15785 Butte Around large rocks, north of a broad open drainage in oak woodland, about 100 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 0 Comment
  CHSC11958  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  CHSC34994  Collomia heterophylla R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3772 Butte 2.2 mi N of La Porte Road (= 1.2 mi S of S end of Sly Creek Reservoir dam), at Strawberry Valley Creek. Roadside. 1059 Comment
  CHSC62122  Collomia heterophylla B. Castro 1987-5-7 62 Butte Ca 3 air mi NE of Forest Ranch on the S side of Ponderosa Way ca 0.2 mi E of its jcn with Garland Road, at the trailhead for the Butte Creek Trail (ca 0.5 mi downstream from the Forks of Butte site). 633 Comment
  CHSC96665  Collomia heterophylla Lowell Ahart 2007-4-30 13704 Butte On the east 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
  UC116644  Comandra Mrs. R. M. Austin May 1896 298 Butte Little Chico Creek Comment
  SEINET10544541  Comandra pallida Mary Susan Taylor 1977-6-25 Taylor 1376 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  UC727026  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia Comment
  CHSC11778  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville. 1550 Comment
  UCD138901  Corallorhiza striata Kenneth D. Stewart 1965-7-15 s.n. Butte along State Highway 32, around 20 miles north of Forest Ranch. Comment
  CHSC1742  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  JEPS66509  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2766 Butte Nimshew (site), nw of Magalia 853 Comment
  CHSC5947  Cornus florida M. MacArthur 1968-6-17 170 Butte SW end of bridge over Big Chico Creek NW of Dining Hall, Chico State College campus. 60 Comment
  SEINET10874016  Cornus nuttallii Mary Susan Taylor 1980-4-27 Taylor 2559 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC11947  Cornus sericea subsp. sericea E. B. Copeland 1930-6-25 431 Butte Jonesville. Along creek. 1500 Comment
  CHSC33765  Cornus sericea subsp. sericea R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4121 Butte E of Stirling City near E border of county. S and E of andesitic Table Mountain in Little Kimshew Creek. 1584 Comment
  JEPS106219  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  JEPS108800  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset 1113 Comment
  RSA0125552  Corydalis caseana Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 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
  CHSC102898  Crassula aquatica Lowell Ahart 2010-4-7 16574 Butte About 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC54384  Crassula connata M. Bailey 1991-3-15 553 Butte Butte College Campus. In field e of Williams Road, ca 1/4 mi n of Pentz Road. 85 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
  CHSC46743  Crassula tillaea Lowell Ahart 1974-4-11 382 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC50542  Crepis occidentalis subsp. conjuncta Vernon Oswald 1990-7-3 4341 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. Along the south fence line in section 27. 1780 Comment
  CDA6678  Crucianella angustifolia L. Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC41357  Crucianella angustifolia R. A. Schlising; J. D. Jokerst 1980-7-2 3816 Butte NW of De Sabla, 0.75 miles SW of crossing of Butte Creek. 658 Comment
  JEPS126582  Crucianella angustifolia Lowell Ahart 2016-5-25 20877 Butte About 200 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  RSA337388  Crucianella angustifolia L. Ahart 1984-6-8 4681 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge road, 3 miles NE of Ponderosa Dam, 3miles N of Forbestown. 500 Comment
  CHSC31726  Crypsis schoenoides L. Ahart 1974-9-8 633 Butte Bottom of a wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38801  Crypsis schoenoides Vernon Oswald 1983-7-21 888 Butte Upper Bidwell Park, Chico, in Lindo Channel neqar the flood-control gates. 79 Comment
  CHSC47612  Crypsis schoenoides Lowell Ahart 1984-8-19 4788 Butte In an area where gravel is removed, north of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC76018  Crypsis schoenoides Lowell Ahart; Vernon H. Oswald 1999-8-13 8148 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
  SEINET10518364  Crypsis schoenoides Lowell Ahart 1982-1 Ahart 3672 Butte On dry bare soil on bottom of dry duck pond, ca. 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 13 mi sw of Gridley. Not common & inconspicuous. Comment
  CHSC151  Cryptantha S. Ptomey 1929-3-26 Butte Chico Golf Links. 60 Comment
  SD240919  Cryptantha flaccida George K Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70,near the Feather River (Palermo 7.5'Q) 46 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
  CHSC61019  Cupressus macrocarpa Vernon H. Oswald 1993-7-29 5733 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CHSC55055  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  CHSC48363  Cuscuta pentagona Vernon Oswald 1988-6-22 3512 Butte Hwy 99, 0.6 mi s of Dry Creek. Comment
  RSA253213  Cycladenia humilis A. A. Heller 1938-7-20 15275 Butte High ridge betw Inskip and chaparral. 1524 Comment
  CHSC4385  Cynodon dactylon M. Hillier 1966-5-30 Butte In juniper bed at corner of Legion Ave and Warner St., Chico. Comment
  SEINET11688676  Cynodon dactylon Unknown 1982-1 428 Butte behind President's Mansion, California State University, Chico Comment
  CAS-BOT-BC190390  Cynosurus echinatus John Thomas Howell 1962-6-16 37603 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CAS-BOT-BC190395  Cynosurus echinatus Lowell Ahart 1983-6-12 4035 Butte Seven miles southwest of Feather Falls, ca. 1 mile south of Crystal Hill, near Oregon Gultch, near Lake Oroville. 425 Comment
  CHSC4306  Cynosurus echinatus R. L. Smith 1966-5-25 9 Butte Paradise 5 mi sw of post office. Comment
  CHSC62802  Cynosurus echinatus L. P. Janeway 1993-6-3 4371 Butte Plumas National Forest. South end of Swayne Hill, along edge of the road to Big Bar Mtn (23N28). 731 Comment
  JEPS127241  Cynosurus echinatus Lowell Ahart 2016-5-24 20871 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
  CHSC34199  Cyperus bipartitus J. D. Jokerst; L. Ahart 1981-9-26 1493 Butte Swale 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CDA17800  Cyperus difformis G. D. Barbe 1978-9-25 2434 Butte Butte Basin; Biggs Rice Experiment Station. 0 Comment
  CHSC109752  Cyperus difformis Lowell Ahart 2012-10-20 18504 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC45156  Cyperus difformis Lowell Ahart 1974-10-20 665 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC114739  Cyperus difformis Lowell Ahart 1986-11-9 5446 Butte Ca. 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Rd, 36 Comment
  CAS-BOT-BC114601  Cyperus eragrostis Ira L. Wiggins 1928-9-9 s.n. Butte Sandy Gulch Creek, 3 miles west of Chico. Comment
  CHSC68383  Cyperus eragrostis L. P. Janeway 1988-6-19 2826 Butte Seepy area along Honey Run Road 0.9 mi southwest of The Skyway. 411 Comment
  JEPS115191  Cyperus eragrostis Lowell Ahart 2009-6-19 15950 Butte About 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UC1100538  Cyperus eragrostis Herbert L. Mason and Verne Grant 1945-7-10 12634 Butte n. of Marysville (marshes along Butte Creek, Butte Sink); Butte Sink, Grey Lodge Game Refuge Comment
  CHSC61068  Cyperus esculentus Vernon H. Oswald 1993-8-9 5780 Butte Arroyo Chico. Hwy. 99 offramp at E. 1st Ave. (NW corner), Chico. 64 Comment
  CHSC110399  Cyperus flavescens Lowell Ahart 2012-9-28 18474 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  RSA0060841  Cyperus flavescens Lowell A. Ahart 2012-10-20 18503 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  UCD139948  Cyperus flavicomus Whitney Brim-DeForest 2013-8-16 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  UCR146290  Cyperus flavicomus Ellen Dean, Et al. 2001-8-20 850 Butte Biggs UC Field Station, N of town of Biggs, west of jct. of Hwys 99 and 162, south side of Hamilton road, west of jct. with Riceton Hwqy, W side of RR tracks; along dirt road that is the extension of Hamilton rd. Comment
  CDA42941  Cyperus fuscus L. Ahart 2012-10-2 18500 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS104601  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West of a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ordbend, about 12 miles (air) SW of Chico. 32 Comment
  SEINET4896966  Cyperus fuscus L. Ahart, V. H. Oswald 1999-8-13 8181 Butte 12 miles SW of Chico. Legal: T20N R1W Comment
  CDA34631  Cyperus niger L. Ahart 2009-6-19 15924 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC116142  Cyperus niger Lowell Ahart 2015-10-26 20598 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
  CHSC94763  Cyperus niger Lowell Ahart 2006-9-13 13316 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, 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
  CHSC97312  Cyperus niger Lowell Ahart 2007-8-19 14487 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UCD150345  Cyperus odoratus William Anderson 1965-9-4 s.n. Butte Dry Creek-Paradise Rd. Comment
  CHSC25403  Cyperus rotundus M. P. Hayes 1977-9-8 55 Butte In flower bed at s end of Modoc Hall, behind Bidwell Mansion on California State University, Chico campus. 76 Comment
  CHSC68406  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1839 Butte Within the City of Chico; on the CSU, Chico Campus. At edge of lawn at northeast corner of Plumas Hall. 59 Comment
  CHSC39400  Cyperus squarrosus L. Ahart 1983-9-17 4431 Butte Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. 600 Comment
  CHSC71266  Cyperus squarrosus Lowell Ahart 1998-7-1 8027 Butte About 100 yards south of a east west fence, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC478548  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  UC600705  Cyperus squarrosus H. F. Copeland 1930-7-29 1351 Butte neighborhood of Jonesville 1828 Comment
  UCSB63782  Cyperus squarrosus Ahart, Lowell 1998-7-18 Butte T20N, R4E, southeast 1/4 Section 8; along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 408 Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  CHSC116137  Cyperus strigosus Lowell Ahart 2015-11-7 20632 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  JEPS115714  Cyperus strigosus Lowell Ahart 2009-8-3 16256 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  SEINET8773192 Image available Cyperus strigosus H. E. Brown Butte Near Clear Creek Comment
  JEPS113229  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock 844 Comment
  HSC66217  Cystopteris fragilis M. S. Taylor 1979-5-4 1988 Butte Millsap Bar Campground, 9 mi. NE of jct. of Millsap Bar Rd. with Brush Cr. Rd., 26 mi. NE of Oroville 1006 Comment
  UCD136366  Cystopteris fragilis M. S. Taylor 1980-4-1 2417 Butte Along S side of Butte Creek, ca. 1/4 mi. downstream from Honey Run Covered Bridge, ca. 6 mi. E of Chico. 121 Comment
  CHSC28140  Damasonium californicum J. D. Jokerst 1979-5-6 215 Butte Ditch. Cox Ln, 0.8mi w. of intersection with Palermo Honcut Hwy. Comment
  JEPS32213  Damasonium californicum W. L. Jepson 1934-5-4 16607 Butte 1 12/ mi. s. Nord (swales of Pine Creek near Sacramento R.); Pine Creek Comment
  CAS-BOT-BC189854  Danthonia californica Lowell Ahart 1987-7-8 5812 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  SBBG128060  Danthonia californica L. Ahart 2010-9-21 17230 Butte N side of a poor dirt rd, ca. 1 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1899 Comment
  CHSC42901  Danthonia californica var. americana Lowell Ahart 1987-7-8 5812 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS117179  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  CAS-BOT-BC194412  Danthonia intermedia V. Oswald; L. Ahart 1988-7-26 3615 Butte Snow Mt. region located ca. 6 air mi SE of Jonesville. 1996 Comment
  JEPS127023  Daucus pusillus Lowell Ahart 2016-6-4 20919 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  CHSC3804  Delphinium gracilentum L. E. Dunkel 1965-3-30 11 Butte South road ascending Table Mtn., near Oroville. 243 Comment
  CAS-BOT-BC8793  Delphinium gracilentum Lowell Ahart 1980-4-30 2127 Butte Along Swedes Flat Road, near Bangor 320 Comment
  LA38372  Delphinium hansenii Lewis; 765 Butte 6.4 mi. E. of Oroville City Limits Comment
  CHSC102847  Delphinium hansenii subsp. hansenii Lowell Ahart 2009-5-30 15805 Butte On the west side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 440 Comment
  RSA0118757  Delphinium hansenii subsp. hansenii Lawrence P. Janeway 2016-5-5 11941 Butte Cascade Range Foothills. Along Humboldt Road 2.3 road-km northeast of Bruce Road; Chico. 152 Comment
  CAS-BOT-BC10303  Delphinium hesperium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC10104  Delphinium hesperium subsp. pallescens C. C., Mrs. Bruce 1897-4-1 1917 Butte unspecified Comment
  CAS-BOT-BC9923  Delphinium nudicaule A. A. Heller 1922-4-23 13619 Butte At the Feather River crossing near Yankee Hill Comment
  CAS-BOT-BC8068  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC121622  Delphinium patens subsp. patens Alice Eastwood 1921-5-22 10567 Butte Los Vergils Comment
  CHSC90256  Delphinium variegatum Michael J. McNairn 1989-4-22 19 Butte Ca. 50 yds. ne of jct. Lupin Ave. and Ceres Ave., NE Chico. 76 Comment
  CAS-BOT-BC17022  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC38165  Delphinium variegatum subsp. variegatum Vernon Oswald 1983-4-6 283 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 88 Comment
  SEINET10448601  Dentaria pachystigma Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3472 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
  SBBG30028  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville 1750 Comment
  UC589923  Deschampsia cespitosa subsp. cespitosa H. S. Yates 1936-8-13 6110 Butte 2 1/2 mi. s.-s.e. Butte Meadows; Paynes Creek Quad. 1493 Comment
  HSC41096  Deschampsia danthonioides J. P. Smith, J. O. Sawyer 1973-4-14 6052 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CAS-BOT-BC201738  Deschampsia elongata Lowell Ahart 1980-9-10 2639 Butte 5 miles east of Milsap Bar 1200 Comment
  CHSC39497  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  SEINET10866368  Dianthus armeria Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4173 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC97407  Dianthus armeria subsp. armeria Robert Fischer 2006-6-28 1026 Butte Paradise. Sierra Nevada foothills, upper Paradise Pines, off Nimshew Road. 853 Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  UC1362270  Dicentra formosa D. Parkinson 1964-4-1 Butte vicinity Monk's Store (Cohasset Stage); Cohasset Stage Comment
  JEPS117178  Dicentra formosa subsp. formosa Lowell Ahart 2010-9-21 17202 Butte About 50 yards east of the poor dirt road, about 100 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-BC209184  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 miles west of Pulga - Sierra Nevada 365 Comment
  JEPS108960  Dichanthelium acuminatum subsp. fasciculatum Lowell Ahart 2006-9-11 13307 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CAS-BOT-BC500064  Dichelostemma capitatum A. A. Heller 1915-3-24 11778 Butte Low grassy hills 8 miles north of Oroville below the blue oak belt in red clay soil, where it is plentiful, associated with Lepidium, Dodacatheon and Athysanus, the first plants in bloom.. Comment
  UC421798  Dichelostemma capitatum Francis Ramaley 1917-5-6 11206 Butte 3 of Chico Comment
  CHSC2094  Dichelostemma capitatum subsp. capitatum N. Maxwell 1929-3-4 Butte Salmon Hole. 121 Comment
  SJSU15295  Dichelostemma capitatum subsp. capitatum Lisa Morton 2002-3-24 5 Butte Upper Bidwell Park, base of N. Rim Trail. 50 Comment
  UCD148232  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2013-3-16 2893 Butte 7.9 mi NNE of Oroville, along E side of Clark Rd, 0.9 mi N of its jct with Hwy 70. 84 Comment
  CAS-BOT-BC501086  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville near Table Mountain Comment
  SEINET12046810  Dichelostemma multiflorum Unknown 1978-1 7 Butte 1.5 mi NE of jct of US 99 & Skyway near Chico, ca 100 ft E of roadway 69 Comment
  SEINET12053819  Dichelostemma multiflorum L. S. Rose 1931-1 s.n. Butte Oroville Comment
  UC143046  Dichelostemma multiflorum Mrs. R. M. Austin Apr 1896 37 Butte e of Chico Comment
  CHSC77498  Dichelostemma volubile Anna Pinsky 1997-4-1 8 Butte Chico, Upper Bidwell Park, between Bear and Salmon Hole, 80 ft. above Big Chico Creek. Comment
  CAS-BOT-BC502513  Dichelostemma volubile Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET10548430  Digitalis purpurea Mary Susan Taylor 1981-5-15 Taylor 3742 Butte T22N R5E nw sec 12, Pulga SE quad. Both sides of RD 22N92, between its jct with 23N00.1 and West Branch French Creek, ca. 1.5 mi S of Coyote Gap, ca. 4 air mi E of Pulga on Feather River Hwy 70. 2900 to 3200 ft; Yellow Pine F. 884 Comment
  CAS-BOT-BC208972  Digitaria ischaemum John Thomas Howell 1961-9-22 36734 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC38808  Digitaria ischaemum Vernon Oswald 1983-9-17 1040 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  SEINET13682945  Diplacus aurantiacus R. T. Short 1959-4-11 s.n. Butte 15 miles E of Oroville on US 40 alt. 549 Comment
  CHSC32743  Diplacus grandiflorus M. S. Taylor 1981-4-8 3481 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 Comment
  CHSC33721  Diplacus kelloggii M. S. Taylor 1981-4-5 3485 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CAS-BOT-BC153210  Diplacus kelloggii Lowell Ahart 1969-4-8 s.n. Butte Swedes Flat Road, near Bangor 1200 Comment
  CHSC58199  Diplacus layneae Vernon H. Oswald; Mayo Torgerson 1992-6-24 5032 Butte Trail into Rattlesnake Creek, which starts at the hairpin curve on Whiskey Flat-Sawmill Peak Rd. ca. 0.1 mi W of the gravel pit, Willard Mine property, ca. 1 mi (air) NE of Magalia. 707 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CHSC33343  Diplacus mephiticus R. Banchero; R. Schlising 1981-6-22 526 Butte 1.1 mi e of Camp 18, 0.2 mi e of jct of Golden Trout Crossing and County Line Rd. Ca. 5 mi ne of Feather Falls town. 1280 Comment
  CHSC44788  Diplacus torreyi R. Banchero 1980-7-7 290 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  CAS-BOT-BC154028  Diplacus torreyi Lowell Ahart 1984-7-19 4725 Butte Along logging roads above the dirt road that is about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CAS-BOT-BC154172  Diplacus tricolor A. A. Heller; H. E. Brown 1902-5-15 5554 Butte Near Biggs Comment
  CHSC116523  Distichlis spicata B. Castro 2012-9-29 1987 Butte Cascade Foothills. Just E of Chico, in upper Bidwell Park N of Big Chico Ck, on SSE-facing slope ca 300 ft above the Diversion Pool gate. Site is ca 3.1 road mi E along The park road from its origin at Wildwood Ave. 132 Comment
  CHSC677  Distylium V. Holt 1961-3-10 Butte Growing on Bidwell grounds between a Crepe Myrtle and a palm near sidewalk to Arcadian Street. 57 Comment
  JEPS120013  Dittrichia graveolens Lowell Ahart 2012-10-28 18542 Butte On the south edge of Biggs East Road, about 1/4 mile east of Highway 99, about 1 1/4 mile east of Biggs. Comment
  JEPS121893  Dittrichia graveolens Lowell Ahart 2014-11-24 19919 Butte About 20 feet below the high water line of Lake Oroville, about 800 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC136235  Dodecatheon alpinum H. F. Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  CHSC12185  Dodecatheon hendersonii Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC19937  Dodecatheon hendersonii M. S. Taylor 1975-3-10 414 Butte Along paths on bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  SEINET10449644  Dodecatheon jeffreyi Mary Susan Taylor 1980-2-17 Taylor 2358 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  CHSC31869  Dopatrium junceum L. Ahart 1974-7-20 555 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SBBG69653  Downingia bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi N of Chico Comment
  RSA691013  Downingia cuspidata L. Ahart 2003-5-28 10227 Butte About 100 ft W of Hendricks ditch, about 1 3/4 miles NW of the iron gate and fence, NW of Cherokee Road, North Table Mt., about 7 miles (air) N of Oroville. 272 Comment
  POM305786  Downingia ornatissima C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  JEPS124180  Draba verna var. aestivalis Lowell Ahart 2015-2-26 19941 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC2103  Dracunculus vulgaris M. Anthony 1954-5-14 Butte Campus near Chico Creek. Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  UC1562388  Drymocallis glandulosa var. glandulosa Vernon Oswald and Lowell Ahart 1990-6-27 4332 Butte between Four Trees and Coyote Gap Rd 23N31 nw Four Trees Rd.; between Four Trees and Coyote Gap 1463 Comment
  CAS-BOT-BC527354  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  UC600380  Drymocallis lactea var. austiniae E. B. Copeland 1930-7-12 Butte above Jonesville (head of Butte Creek area); , above Jonesville 1900 Comment
  CHSC70826  Dryopteris arguta Vernon Oswald 1998-4-12 8904 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 396 Comment
  CHSC92383  Dryopteris arguta Lowell Ahart 2005-11-12 12481 Butte Bank of a wash, about 90 yards northeast of the large parking area by the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road. 327 Comment
  CHSC455  Dudleya cymosa C. Merton 1929-5-1 Butte Paradise. Comment
  CHSC111982  Dudleya cymosa subsp. cymosa Lowell Ahart 2012-6-2 18133 Butte Along the sides of Truex Road, w. of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. NW of West Branch Bridge across Lake Oroville. 286 Comment
  UCD101932  Dudleya multicaulis R. Curtis 1995-5-27 8 Butte 10 m above Bear Hole, Big Chico Creek, approx. 6 miles south of Bidwell Road in Upper Bidwell Park. Comment
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Apr 7 2018
  CHSC37102  Dysphania ambrosioides L. Ahart 1982-9-12 3794 Butte Along banks of North Honcut Creek, ca. 1 1/4 mi n and 3 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC66666  Dysphania ambrosioides Vernon H. Oswald 1996-7-17 8064 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  JEPS120583  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  UCD98820  Dysphania pumilio A. A. Heller 1914-7-20 11580 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC208574  Echinochloa oryzoides Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UCD137945  Echinodorus berteroi L. Ahart 1975-6-20 798 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD131240  Eclipta prostrata L. Ahart 1999-9-21 8268 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
  CHSC114972  Elatine Lowell Ahart 2015-3-31 19985 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Rutherford Road, Gray Lodge Wildlife Area, aobut 3-1/2 miles (air) southwest of Gridley. 22 Comment
  JEPS122149  Elatine Lowell Ahart 2014-8-8 19697 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 east of Honcut. Comment
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC82228  Elatine ambigua Lowell Ahart 2002-4-10 9476 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC398894  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville 1550 Comment
  CHSC46300  Eleocharis coloradoensis Vernon Oswald 1989-5-23 3781 Butte Gray Lodge Wildlife Area, in the field se of the intersection of Rutherford Rd and the road to Parking Areas 12 and 13. 19 Comment
  CDA38959  Eleocharis decumbens L. Ahart 2000-5-3 8410 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road about 2 miles south of Paradise. Comment
  CHSC28555  Eleocharis engelmannii M. S. Taylor 1978-7-21 1842 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  CHSC31668  Eleocharis engelmannii L. Ahart 1979-6-2 1911 Butte On the bottom of a large wash in one of the farmed fields. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC96902  Eleocharis engelmannii Lowell Ahart 2006-7-27 14395 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC38906  Eleocharis macrostachya Vernon Oswald 1983-5-31 594 Butte Upper Bidwell Park, Chico, 750 ft n of Upper Park Rd. and 2600 ft w of the power lines. 121 Comment
  SEINET13710556  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8389 Butte 12 Air Mi. SE of Oroville (T17N, R4E, sec 11, SE 1/4) 130 Ft. 40 Comment
  UC478547  Eleocharis palustris E. B. Copeland 1931-7-15 613 Butte Jonesville 1750 Comment
  CHSC31940  Eleocharis parishii J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-5-18 719 Butte Top of Cohasset Ridge, S facing slope above Mud Cr. 243 Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  UC143762  Eleocharis parishii Copeland 1903-5-30 3280 Butte Chico Comment
  RSA716569  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  RSA716570  Eleocharis quinqueflora L. Ahart 2000-6-29 8542 Butte On the northwest side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia 1037 Comment
  CHSC84055  Elymus caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  SEINET10564666  Elymus elymoides Edwin B. Copel 1929-7-24 Copeland 340 Butte Jonesville. In dry, open, yellow-pine woods. 1575 Comment
  CAS-BOT-BC203419  Elymus glaucus subsp. glaucus Lowell Ahart 1988-7-31 6165 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  CHSC38858  Elymus multisetus Vernon Oswald 1983-5-25 555 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. near Parking Area R (2.3 mi e of the power lines). 231 Comment
  SD34470  Elymus multisetus A. A. Beetle 1941-6-27 2740 Butte 20 miles northeast of Chico Comment
  CHSC31936  Elymus sierrae J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1033 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of county. 1828 Comment
  CHSC85741  Elymus trachycaulus subsp. subsecundus G. F. Hrusa; T. D. Wilfred 1996-7-9 13162 Butte Sierra Nevada-Plumas National Forest. Bank on USFS N60 approx. immed. E of bridge over Marble Creek. [Lat./Long. on label is '39 degrees 46' N; 121 degrees 17' W']. 1150 Comment
  CDA2042  Elytrigia elongata L. Ahart 2000-7-17 8595 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  JEPS115636  Elytrigia pontica subsp. pontica Lowell Ahart 2009-8-23 16299 Butte On dry soil, about 100 yards south of the GPS reading, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SEINET12192833  Epilobium adenocaulon M. S. Taylor 1975-1 954 Butte ca 1 mi S of Paradise, E side of Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy 610 Comment
  CHSC26660  Epilobium brachycarpum M. S. Taylor; M. Hayes 1977-8-19 1504 Butte In Cambell slough, ca. 3 mi e of jct of Hwys 42 and 162, on Hwy 162. 30 Comment
  CHSC112926  Epilobium campestre B. Castro; Sabrina Bell 2012-6-12 1928 Butte Sacramento Valley. Ca 1.7 air mi E of Hwy 99 and 0.75 mi N of Hwy 162 of NE edge of Thermalito Thermalito Afterbay, 0.45 mi SW of old 'Oroville Jcn' on maps, now jcn of Tres Vias and Wilbur Roads. 45 Comment
  SBBG126101  Epilobium campestre L. Ahart 2012-6-5 18166 Butte strand of the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 295 Comment
  CHSC12078  Epilobium canum subsp. latifolium R. N. Bowman 1971-6-11 57 Butte Found on cliffs overlooking Big Chico Creek, Fern Banks, Bidwell Park, Chico. 64 Comment
  UC1562295  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along small stream below high water line of Lake Oroville (e of Enterprise Boat Launch Area, about 1/4 mi nw of Enterprise Bridge across lake) 243 Comment
  SEINET6635797 Image available Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville 1500 Comment
  CHSC117317  Epilobium densiflorum L. P. Janeway 2016-8-8 12143 Butte Northern High Sierra Nevada. Plumas National Forest; about 300 m south of Road 22N27 (Lumpkin Ridge Road) at the southern end of Lumpkin Ridge. 1282 Comment
  CHSC44411  Epilobium densiflorum Lowell Ahart 1988-6-21 6048 Butte In a depression near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS119817  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte On the south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. Comment
  UC873166  Epilobium densiflorum A. A. Heller 1914-8-20 11691 Butte 5 mi s Pentz; Dry Creek Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC46578  Epilobium hornemannii subsp. hornemannii Vernon H. Oswald 1989-7-15 3859 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Ditch in the sw corner of the meadow. 1767 Comment
  UC1601414  Epilobium lactiflorum H. F. Copeland 1932-8-22 Butte ridge se crest of Butte Creek (near springs); Lassen National Forest, Vicinity of Jonesville Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC44137  Epilobium obcordatum V. Oswald; L. Ahart 1988-7-29 3635 Butte Ca. 5 (air) mi se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC103720  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  RSA0045628  Epilobium torreyi Lowell A. Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 122 Comment
  JEPS120178  Equisetum hyemale subsp. affine Lowell Ahart 2012-7-5 18276 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SEINET10530239  Equisetum laevigatum Mary Susan Taylor 1975-8-31 Taylor 891 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
  CHSC103155  Equisetum telmateia subsp. braunii Lowell Ahart 2009-6-19 15938 Butte South of trail where people cross Big Chico Creek, 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
  CHSC44622  Equisetum telmateia subsp. braunii Vernon Oswald 1984-4-16 1152 Butte Humbug Rd. (Centerville Rd.), 2.8 mi s-w of its jct. With Nimshew Ridge Rd. 548 Comment
  UC1563256  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  SEINET13711407  Eragrostis mexicana Lowell William Ahart, Lowell William Ahart 1999-1 8306 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Bank of Sacramento River 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
  CHSC66458  Eragrostis pectinacea var. pectinacea Vernon H. Oswald; Lowell Ahart 1996-6-10 7733 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 river at the N end of the Riparian Sanctuary. 28 Comment
  JEPS120720  Eragrostis pectinacea var. pectinacea Lowell Ahart 2013-10-12 19105 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  RSA794968  Eremocarpus setiger L. Ahart 2010-9-12 17148 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 0.25 air miles northwest of the Ponderosa Dam. 243 Comment
  CAS-BOT-BC174106  Eremogone aculeata Anna Head 1920-7-21 s.n. Butte Summit of Mt. Elwell, Feather River Region Comment
  CAS-BOT-BC291275  Ericameria bloomeri H. F. Copeland 1920-8-25 206 Butte Jonesville 1219 Comment
  JEPS108159  Ericameria bloomeri L. P. Janeway 1994-8-16 4735 Butte High Cascade Range. Ridge between Little Kimshew Creek and Big Kimshew Creek; just east of Concow Road 1.2 mi north of Ramsey Bar. Logging landing flat along ridge 1478 Comment
  UC87299  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 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
  UC725636  Erigeron foliosus var. hartwegii A. A. Heller 1942-6-5 16499 Butte about half way between the junction of the Middle Fork and the West Branch (on the Feather River Highway) Comment
  RSA32021  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch Comment
  UC1564804  Erigeron glacialis var. glacialis V. Oswald and L. Ahart 1989-7-12 3844 Butte 2.3 (air) mi nne Bald Mtn. Lookout (on road between lookout and Jones Meadow) 1828 Comment
  CAS-BOT-BC295419  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 s.n. Butte Jonesville 1550 Comment
  CHSC34037  Erigeron inornatus var. inornatus L. Ahart 1981-7-7 2913 Butte A little e of the bridge across Rocky Honcut Creek, Swedes Flat Rd, ca. 7 mi s of Bangor. 350 Comment
  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
  CHSC61906  Erigeron petrophilus var. sierrensis M. S. Taylor 1981-6-19 3962 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, ca. 20 mi ne of Oroville. Comment
  JEPS105013  Erigeron petrophilus var. sierrensis Dean W. Taylor 1995-8-6 15384 Butte Rocky Ridge, N end; ca. 6 air mi E of Paradise, on the northern rim of the North Fork Feather River canyon; Lassen National Forest 975 Comment
  CHSC58253  Erigeron philadelphicus Lowell Ahart 1992-5-9 6758 Butte Along a stream, east of Cherokee Road, about 2 (air) miles north of Oroville. 91 Comment
  CHSC110976  Eriobotrya deflexa Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18269 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
  CHSC113805  Eriodictyon californicum M. Ocken 2011-4-25 Butte Butte Creek Ecological Preserve. 106 Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  CHSC50674  Eriodictyon californicum Lowell Ahart 1990-4-28 6468 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC80857  Eriogonum dasyanthemum Lowell Ahart 2001-7-6 8884 Butte West of a large pond, large 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 Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC259279  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC61643  Eriogonum lobbii Lowell Ahart 1993-9-8 7166 Butte Open bare areas, on the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CAS-BOT-BC259401  Eriogonum luteolum A. A. Heller 1913-9-16 11142 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC1338  Eriogonum luteolum var. luteolum R. M. Staley 1952-7-13 Butte Ponderosa road N. of De Sabla. Comment
  CHSC20968  Eriogonum luteolum var. luteolum M. S. Taylor 1975-9-12 921 Butte Abundant along railroad tracks, ca. 1/2 mi n of Magalia. 609 Comment
  CAS-BOT-BC27331  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley no. 410) Butte Above Jonesville 2000 Comment
  CHSC21237  Eriogonum nudum var. oblongifolium M. S. Taylor 1975-9-19 916 Butte In serpentine area, ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  UC600501  Eriogonum nudum var. pubiflorum H. F. Copeland 1927-9-2 949 Butte Jonesville Comment
  CHSC45488  Eriogonum roseum Lowell Ahart 1974-9-30 640 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC96904  Eriogonum roseum Lowell Ahart 2007-7-24 14390 Butte About 200 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  POM219116  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville, ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC50840  Eriogonum umbellatum var. nevadense Vernon Oswald; Lowell Ahart 1990-7-19 4373 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.7 mi west of the Plumas County line. 1950 Comment
  CHSC45481  Eriogonum ursinum var. ursinum Lowell Ahart 1981-8-1 3017 Butte Near the top of Humboldt Peak. 2133 Comment
  CHSC51895  Eriogonum ursinum var. ursinum L. P. Janeway 1988-6-16 2800 Butte Southeast facing outcrop above Butte Cr; along rd in W side of the cyn, 3.0 mi S of Humboldt Rd. 1310 Comment
  JEPS115266  Eriogonum vimineum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC262343  Eriogonum vimineum Lowell Ahart 1981-8-11 3026 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC83018  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CAS-BOT-BC308150  Eriophyllum lanatum var. grandiflorum E. B. Copeland 1899-4-1 s.n. Butte Chico 152 Comment
  CAS-BOT-BC308155  Eriophyllum lanatum var. grandiflorum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC77707  Eriophyllum lanatum var. grandiflorum Anna Pinsky 1997-4-24 11 Butte Upper Bidwell Park, Salmon Hole, 100-200 ft. above Big Chico Creek. Near parking area, off main road into park. Comment
  JEPS119787  Erodium brachycarpum Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17998 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  RSA715730  Erodium brachycarpum L. P. Janeway 2005-3-10 8357 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CDA5616  Erodium cicutarium L. Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC48454  Erodium moschatum Vernon Oswald 1984-3-2 1087 Butte Upper Bidwell Park, Chico, at the Rod and Gun Club. A weed along the west wall of the clubhouse. 102 Comment
  SEINET10495135  Erodium obtusiplicatum Mary Susan Taylor 1975-2-16 Taylor 374 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  UC1551929  Eryngium castrense Aaron Liston, Sara Meury 1988-5-28 743 -5 Butte 15 km (air) SE of Chico (1/4 mi S of Pentz Road, 1/8 mi E of Hwy. 99) 55 Comment
  UC764741  Eryngium castrense R. F. Hoover 1936-5-20 1156 Butte 8 mi. n. Oroville Comment
  SEINET8245391  Erythranthe bicolor A. A. Heller 1914-5-17 11338 Butte none. 732 Comment
  CHSC105811  Erythranthe breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC78396  Erythranthe cardinalis Lowell Ahart 2000-7-18 8599 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CHSC44683  Erythranthe glaucescens R. Banchero 1980-4-26 134 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd. 0.4 mi SW of the town of Cohasset. 426 Comment
  CHSC44778  Erythranthe glaucescens R. Banchero 1980-3-23 75 Butte Along Crown Point Rd, 0.5 mi from its jct with Hwy 32. 539 Comment
  CHSC45718  Erythranthe glaucescens M. S. Taylor 1974-4-30 193 Butte The Horse Trough on side of Cohasset Rd., ca. 6 mi n of Chico Municiple Airport. Comment
  CHSC78102  Erythranthe glaucescens Caleb E. Casey 1999-4-6 Butte Bear Hole, Upper Bidwell Park. Found near Chico creek along old diversion canal. 121 Comment
  CHSC105769  Erythranthe guttata Christopher T. Ivey 2010-6-7 376 Butte Honey Run Road, 8.0 km NE of bridge crossing Butte Creek, in roadside ditch. 440 Comment
  CHSC3281  Erythranthe guttata M. L. Hillier 1966-5-9 Butte In rd. side ditch. Humbug rd. 2 miles n. of covered bridge. Comment
  CHSC3634  Erythranthe nasuta Alice L. Stoll 1966-2-28 30 Butte 7.9 miles N.E. of First and Main Streets, Chico. Salmon Hole, Upper Bidwell Park. Comment
  CHSC44673  Erythranthe nasuta R. Banchero 1980-4-26 124 Butte Along the Cohasset Hwy 2.3 mi NE of its jct with Keefer Rd, 3.9 mi SW of the town of Cohasset. 182 Comment
  CHSC44781  Erythranthe nasuta R. Banchero 1980-3-21 74 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 Comment
  CHSC105187  Erythranthe pulsiferae B. Castro; L. P. Janeway 1999-8-1 1024 Butte NE shore of Summit Lake, ca 0.7 mi NE of Snow Mtn. 1886 Comment
  CHSC43145  Erythranthe pulsiferae R. A. Schlising; R. Banchero 1980-6-12 3684 Butte 4.6 mi S of Tehama County line on Hwy 32; to E of highway. Comment
  SBBG17080  Erythronium citrinum M. Vincent 1961-3-27 19 Butte 1 mi N of Magalia 762 Comment
  CHSC109129  Erythronium multiscapideum Lowell Ahart 2012-3-23 17787 Butte Along a small drainage, about 100 yards east of Big Chico Creek, about 300 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 201 Comment
  CHSC31345  Erythronium multiscapideum Howard Paul 1980-4-6 5 Butte To the s side of Humbug road, ca. 1.5 mi e of the Centerville cemetery, 20 mi e of Chico. 365 Comment
  CHSC32853  Erythronium multiscapideum William Askea 1981-4-22 11 Butte Ca. 50 m w of Butte Creek and 1.2 km n of Magalia Reservoir, 2.5 km n of Magalia. 725 Comment
  CHSC4195  Erythronium multiscapideum E. P. Parreno 1967-4-10 Butte Ca. 300 yards from Covered Bridge, NE Chico. Comment
  CHSC88636  Erythronium multiscapideum Linnea Hanson 1983-4-6 192 Butte Plumas National Forest. Gemini Mine 701 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  UC1485466  Erythronium multiscapideum M. S. Taylor 1981-4-8 3516 Butte open reddish serpentine slope ca 1/10 mi s jct of Concow Road and Ponderosa Way (ca 7 mi n of Jarbo Gap on Hwy 70, ca 22 air mi n of Oroville); Pulga SW Quad 975 Comment
  UC1731208  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  UC843861  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CAS-BOT-BC504526  Erythronium multiscapideum A. A. Heller 1939-4-8 15368 Butte About 4 miles from Magalia on the Coutlenc road. Comment
  CAS-BOT-BC504537  Erythronium multiscapideum John Thomas Howell 1955-6-14 30438 Butte Magalia 731 Comment
  UCSB63621  Eschscholzia caespitosa Holloway, Steve 1986-4-1 Butte North Table Mountain, 150m W of Cherokee Rd., 11.1 km N of the Feather River (Oroville 7.5 minute series Quadrangle. NW1/4, Sec. 17, T20N, R4E 396 Comment
  CHSC24875  Eschscholzia californica T. F. Burnham 1976-4-24 17 Butte Ca. .5 mi s of Skyway, 5.8 mi e of Chico. 246 Comment
  CHSC37283  Eschscholzia californica M. S. Taylor 1982-5-2 4388 Butte Pulga serpentine oucrops on n side of Hwy 70 at Pulga bridge, ca 20 mi ne of Oroville. 487 Comment
  CAS-BOT-BC402973  Eschscholzia californica Carl B. Wolf 1937-6-12 8787 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  CHSC43617  Eucephalus breweri Vernon H. Oswald; Lowell Ahart 1987-8-5 3178 Butte Near Humboldt Peak. 2148 Comment
  CHSC69106  Eucephalus breweri Lowell Ahart 1997-8-1 7787 Butte Near some small streamlets of Little Kemshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC80632  Euonymus occidentalis var. occidentalis Lowell Ahart; Vernon H. Oswald 2001-6-18 8879 Butte On the east side of the dirt road and east of the bridge across the West Branch of the Feather River, about 2 miles (air) southeast of Stirling City. 609 Comment
  SEINET10453765  Euphorbia hooveri Mary Susan Taylor 1980-1 Butte Comment
  CAS-BOT-BC202419  Euphorbia ocellata Lowell Ahart 1976-7-4 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC101280  Euphorbia peplus Lowell Ahart 2009-4-3 15532 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS124186  Euphorbia peplus Lowell Ahart 2015-3-24 19959 Butte 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. Comment
  SEINET10873987  Euphorbia serpillifolia Lowell Ahart 1984-8-19 Ahart 4785 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC50816  Eurybia integrifolia Vernon Oswald 1990-7-23 4381 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  CHSC103996  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC52366  Festuca arundinacea J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1547 Butte In the Grey Lodge Waterfowl Management Area, roadside. Comment
  JEPS117268  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC68916  Festuca subulata Lowell Ahart 1997-7-11 7756 Butte Along a stream, south of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC80579  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) southwest of Gridley. 22 Comment
  CHSC43057  Fragaria vesca L. P. Janeway 1987-6-5 2151 Butte Upper reach of Carey Gulch where rd 22N89 crosses it 0.5 mi from Oro Quincy Hwy. Edge of road near creek. 1097 Comment
  CHSC79562  Fragaria vesca G. F. Hrusa; T. D. Wilfred 1997-5-1 13700 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']. 775 Comment
  LA207663  Frangula californica subsp. tomentella A. A. Heller; 1915-5-16 11869 Butte Chico-Centerville rd 3 mi. from Chico Comment
  CHSC110033  Fraxinus Lowell Ahart; Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC223383  Fraxinus dipetala Mrs. C. C. Bruce 1897-4-1 s.n. Butte Humboldt road Comment
  RSA725003  Fraxinus latifolia L. 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. 432 Comment
  SEINET10871601  Fremontodendron californicum Mary Susan Taylor 1980-5-15 Taylor 2638 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
  UC600462  Fritillaria atropurpurea H. F. Copeland 1932-7-24 Butte Jonesville, above hotel Jonesville Comment
  CDA13889  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-8 13746 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC29100  Fritillaria eastwoodiae M. S. Taylor; J. D. Jokerst 1980-4-18 2502 Butte Ca. 1 mi S of Nimshew, ca. 2 ft E of Nimshew Rd. 609 Comment
  CAS-BOT-BC124017  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte Near Durham Comment
  RSA31669  Fritillaria pluriflora A. A. Heller 1916-3-5 s.n. Butte Along Hwy 10 miles north of Chico Comment
  POM109779  Fritillaria recurva C. C. Bruce 1897-05 2025 Butte Forest- Ranch. Comment
  CHSC70997  Galium aparine Vernon Oswald 1998-5-6 8988 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 between Chico and Forest Ranch opposite Santos Rd. and South Rim Trail. 441 Comment
  CHSC86591  Galium aparine L. P. Janeway; Barbara Castro, Eric Ryan 2003-4-19 7759 Butte Sacramento Valley. City of Chico residential area; West 12th Street between Broadway and Oakdale. 59 Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  CHSC102984  Galium bolanderi Lowell Ahart 2009-6-3 15813 Butte On the west side of the trail, about 150 yards southwest of the table at the old homestead and Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 273 Comment
  CHSC96967  Galium bolanderi Lowell Ahart; Lawrence Janeway 2007-7-10 14284 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
  SEINET10869770  Galium bolanderi Mary Susan Taylor 1980-6-14 Taylor 2876 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  POM174355  Galium grayanum var. grayanum H. F. Copeland 1928-8-29 1015 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC42431  Galium parisiense Lowell Ahart 1987-5-6 5537 Butte At the Poe Power House that is along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  JEPS119883  Galium parisiense Lowell Ahart 2012-6-2 18144 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
  CHSC30902  Galium porrigens var. tenue M. S. Taylor 1980-3-1 2349 Butte On SE facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise. 301 Comment
  CHSC38659  Galium porrigens var. tenue Vernon Oswald 1982-12-3 18 Butte Bidwell Park, Chico, beside road leading to Police Pistol Range. 85 Comment
  CHSC51371  Galium trifidum var. pacificum Vernon Oswald 1990-9-11 4449 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. 960 Comment
  JEPS98530  Galium trifidum var. pacificum Lowell Ahart 2000-7-11 8575 Butte on the SE side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) NE of Feather Falls. 1219 Comment
  CHSC73819  Galium triflorum B. Castro 1997-6-13 743 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. 1066 Comment
  CAS-BOT-BC169935  Garrya fremontii Wm. S. Levis 1931-7-3 s.n. Butte Middle Feather River Comment
  CHSC3588  Garrya fremontii Susan Carrauthers 1966-3-5 29 Butte E. of city of Chico along highway 32 toward Susanville ca. 12 mi. Comment
  CHSC52399  Garrya fremontii Dena Gracey 1979-3-22 22 Butte Northeast of Chico 10 mi on hwy 32, off Crown Point Rd 5 ft. 548 Comment
  RSA795641  Garrya fremontii L. Ahart 2012-3-2 17759 -A Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 423 Comment
  UC478490  Garrya fremontii E. B. Copeland 1932-7-27 667 Butte Jonesville 1650 Comment
  SEINET12137514  Garrya fremontii T. A. Welgan 1979-1 1 Butte ca 9 mi SE of Chico on Hwy 32, 3 yds N of Highway 32 213 Comment
  CHSC56630  Gastridium phleoides T. B. Devine 1980-6-28 717 Butte At junction of Pentz Road and Pentz-Magalia Hwy. Comment
  CHSC99008  Gastridium phleoides 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
  RSA716153  Gastridium phleoides L. Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  UCD66716  Gastridium phleoides C. C. Parry 1887-1 Butte Chico. Comment
  UCD80552  Gastridium phleoides CNPS SN Foothill Team 2005-5-3 SNFN 0198 b Butte City of Chico, Doe Mill Meadowfoam Preserve, Ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  CHSC37442  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-19 4156 Butte NE of Stirling City near e side of county; Crane Valley, southern portion. Meadow. Comment
  CHSC37444  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-3 4130 Butte E of Philbrook Reservoir; at trailside. 1828 Comment
  HSC87163  Gayophytum heterozygum Robert Banchero, Robert A. Schlising 1980-7-28 3926 Butte Chico Meadows, 1 mi. N of Butte Meadows 1317 Comment
  UC128808  Gayophytum heterozygum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC30078  Gayophytum racemosum R. A. Schlising 1980-7-16 3913 Butte Margins of Butte Creek NE of Butte Meadows, SW of Cherry Hill Campground. 1402 Comment
  CHSC113238  Geranium dissectum Lowell Ahart 2014-4-16 19378 A 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. 29 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
  UCD103321  Geranium dissectum H. F. Copeland 1923-5-1 s.n. Butte Nelson. Comment
  CHSC101259  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  JEPS103246  Geranium molle Lowell Ahart 2002-5-7 9625 Butte High banks of a pond, at the beginning of a SE 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
  JEPS115239  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SEINET10495125  Geranium molle Mary Susan Taylor 1980-4-27 Taylor 2566 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  CHSC43048  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of creek. 1097 Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC6280  Gilia tricolor L. Lyons 1967-4-27 Butte Field on n side of Richardson's Spring Rd., ca. 1/4 mi e of entrance on n Cohasset Rd., ca. 3.5 mi from East Ave. 91 Comment
  RSA590189  Gilia tricolor Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7210 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. N side of Beatson Hollow, 1.9 miles along trail from entrance on Cherokee Rd. Comment
  UCD117968  Gilia tricolor Michael A. Vincent; Ethan H. Freid 1998-4-6 8118 Butte Table Mountain. Comment
  CDA40020  Gilia tricolor T. C. Fuller 1958-4-15 3807 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  CAS-BOT-BC266483  Githopsis diffusa A. A. Heller; H. E. Brown 1902-5-8 5491 Butte Berry Canyon [near Clear Creek] Comment
  RSA21308  Githopsis specularioides C. B. Wolf 1937-5-12 8653 Butte West side of So. Honcut Creek, 2.6 miles E of Bangor; Sierra Nevada Foothills. 213 Comment
  UCSB44143  Githopsis specularioides Reisentz, Paul 1979-5-13 Butte 0.7 miles west on Lunt Road from Hwy 70 Comment
  UC129448  Glechoma hederacea Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC42117  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte On the dry 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 southwest of Oroville. 36 Comment
  CHSC49551  Glyceria elata Vernon Oswald 1987-6-8 2958 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 Comment
  CHSC78959  Glyceria occidentalis Lowell Ahart 2000-10-21 8713 Butte About 100 feet north of Hmilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET10473777  Gnaphalium chilense Mary Susan Taylor 1978-9-9 Taylor 1924 Butte Along the Skyway in the village of Inskip. 1468 Comment
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  SEINET10475069  Gnaphalium luteoalbum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4151 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  SEINET10904836  Gnaphalium luteoalbum Mary Susan Taylor 1977-10-10 Taylor 1529 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  SEINET10475151  Gnaphalium microcephalum var. thermale Mary Susan Taylor 1977-7-15 Taylor 1419 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC60953  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 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
  UC444994  Gnaphalium palustre E. B. Copeland 1930-7-1 Butte Scotch John meadow Jonesville, Scotch John meadow 1700 Comment
  CHSC117419  Gratiola ebracteata Lowell Ahart 2016-5-30 20884 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC31870  Gratiola ebracteata L. Ahart 1974-4-14 411 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC82092  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS95865  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC51854  Helenium bigelovii L. P. Janeway 1987-7-5 2439 Butte 0.4 mi E on a spur road from the Concow Rd, thence 1.0 mi SW from Jones Mdw. 1798 Comment
  CHSC6579  Helenium bigelovii R. Carter 1966-6-15 432 Butte 2/3 mi. SE of Little Bald Rock on N side of Bean Creek Rd.; along creek beside road. 762 Comment
  CHSC96913  Helenium puberulum Lowell Ahart 2006-7-27 14399 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  JEPS113570  Helenium puberulum Lowell Ahart 2007-7-27 14399 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  CAS-BOT-BC309394  Helenium puberulum G. Earle Kelley 1920-10-31 s.n. Butte Los Verjils Comment
  SEINET5554091  Helianthella californica H. S. Gentry 1962-1 19760 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  CHSC87572  Helianthella californica var. nevadensis R. D. Fischer; Jenny Marr 2004-4-28 138 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. North end of Disk Golf Course near the upper end of connecting trail down to Guardian Trail. 411 Comment
  CDA13705  Helianthus bolanderi G. F. Hrusa 1997-8-5 14065 Butte Sierra Nevada; Immed. N of Magalia Reservoir on N hillside above Little Butte Creek. Accessed off Holmwood Rd. 0 Comment
  JEPS122253  Heliotropium europaeum Lowell Ahart 2014-9-23 19863 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  JEPS128617  Heliotropium europaeum Lowell Ahart 2017-8-8 21656 Butte Park, west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CHSC33891  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 2 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CHSC357  Hemizonia congesta subsp. luzulifolia V. Holt 1944-9-15 Butte Near Chico. 57 Comment
  CHSC50797  Hemizonia congesta subsp. luzulifolia Vernon Oswald; Mary Bailey 1990-8-2 4426 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CHSC20715  Heracleum lanatum M. S. Taylor 1975-8-31 877 Butte On Ernies Island, ca. 50 ft s of Humboldt Rd in Butte Creek, ca. 1/2 mi e of Butte Meadows. 1341 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
  CHSC66073  Herniaria hirsuta subsp. hirsuta Vernon H. Oswald 1996-5-22 7621 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 the Sacramento River at the N end of the Riparian Sanctuary. 30 Comment
  JEPS95917  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1999-8-13 8158 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
  CHSC31619  Hesperevax acaulis var. acaulis L. Ahart 1974-4-24 429 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CAS-BOT-BC175976  Hesperolinon californicum Mrs. C. C. Bruce 1897-3-1 1775 Butte Little Chico Comment
  CAS-BOT-BC175994  Hesperolinon californicum A. A. Heller; H. E. Brown 1902-5-8 5504 Butte Berry Canyon (near Clear Creek) Comment
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  CHSC40373  Hesperolinon micranthum Lowell Ahart 1985-6-30 5085 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  JEPS98429  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte 3 mi SE of Paradise (just W of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 286 Comment
  RSA107430  Hesperolinon micranthum L. S. Rose 1955-6-15 55100 Butte 6 miles SE of Paradise on Pentz Road 427 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
  UC109504  Hesperolinon micranthum Mrs. R. M. Austin 1883-1 Butte Comment
  CDA18369  Heteranthera limosa G. D. Barbe 1978-8-14 2438 Butte Biggs Rice Experiment Station. 0 Comment
  UCR198049  Heteranthera rotundifolia John 1983-8-16 s.n. Butte Sacramento Valley, Biggs Rice Field Station, north of Biggs, 2.5 mi west of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
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Oct 10 2010
  CHSC38643  Heteromeles arbutifolia Vernon Oswald 1983-6-9 656 Butte Upper Bidwell Park, Chico, near Parking Area R (2.3 mi e of the power lines). 228 Comment
  JEPS115260  Heteromeles arbutifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  SEINET10483349  Heteromeles arbutifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4113 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  SEINET10839198  Heterotheca grandiflora Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4293 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CAS-BOT-BC311009  Heterotheca oregona John Thomas Howell 1959-9-20 34620 Butte Eastern outskirt of Oroville on level of Feather River 60 Comment
  CHSC26706  Heterotheca oregona var. compacta Hayes; Schlising 1977-10-23 144 Butte In Lindo Channel ca. 180 m w of its intersection with Mangrove Avenue. 35 Comment
  CHSC102832  Hirschfeldia incana Lowell Ahart 2009-6-19 15939 Butte Along trail, 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
  CHSC99752  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte On wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC149862  Holodiscus discolor Lowell Ahart 1981-7-7 2931 Butte Forbestown 750 Comment
  CHSC6728  Hordeum arizonicum B. Anthony 1968-4-21 464 Butte Horshoe Lake, Bidwell Park, Chico. Comment
  CHSC113947  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte 20 yards east of the east edge of a large wet meadow (some bog), about 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC6727  Hordeum hystrix J. Wheeler 1968-4-22 587 Butte Upper Bidwell Park by golf course. Comment
  UC1132515  Hordeum marinum subsp. gussoneanum C. G. Albertus 1933-5-29 7 Butte 1 1/2 mi n Wick; Chico Quad. Comment
  CHSC4320  Hordeum murinum subsp. glaucum M. Hillier 1966-5-29 Butte In creek bed parallel to Manzanita Ave., Chico. Comment
  CHSC31717  Hordeum murinum subsp. leporinum L. Ahart 1970-4-16 43 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC9345  Hordeum vulgare B. Anthony 1968-4-15 459 Butte 3 miles W. of Hamilton City on Hwy. 32. Comment
  UC203611  Horkelia fusca subsp. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  CHSC43124  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-5-28 2113 Butte Edge of ridge at Coyote Gap F.S. Station. 1325 Comment
  CAS-BOT-BC536253  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CHSC39335  Hosackia pinnata Lowell Ahart 1983-6-26 4139 Butte Along the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC51993  Hydrocotyle umbellata B. Castro 1987-9-22 250 Butte S side of Pentz Rd ca 2.2 mi e of its jcn with Clark Rd. 115 Comment
  CAS-BOT-BC400823  Hypericum anagalloides Lowell Ahart 1974-8-14 s.n. Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC43295  Hypericum anagalloides Lowell Ahart 1987-9-4 5882 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
  CHSC45900  Hypericum anagalloides Lowell Ahart 1977-6-3 1404 Butte 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
  JEPS94061  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte ca. 7 (air) mi. n. Oroville (seep area w. of cattle chute on w. side of Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  UC334468  Hypericum anagalloides unknown Butte 40 mi. above Chico (on Humboldt grade, Camp Colby); Camp Colby Comment
  POM196017  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville. 1550 Comment
  SFV2320  Hypericum concinnum M. L. Vincent 1960-7-19 93 Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  UC1594574  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  CHSC8122  Hypochaeris glabra K. Henegar 1969-4-17 92 Butte Pentz Road, 1/4 m from junction with 99 E. Comment
  RSA754794  Hypochaeris glabra L. Ahart 2009-5-8 15654 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC43254  Hypochaeris radicata Lowell Ahart 1987-10-16 5913 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  CHSC46979  Imperata brevifolia Vernon H. Oswald 1989-9-28 4020 Butte Richardson Springs in the foothills ne of Chico. North of the falls on the East Branch of Mud Creek. 243 Comment
  CDA2760  Ipheion uniflorum R. Bell-Booth 1962-3-28 Butte 656 E. 5th Street, Chico. 0 Comment
  CAS-BOT-BC133556  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22527 Butte State Hwy. 32, 11.5 mi. s. from Lomo 944 Comment
  CHSC46530  Iris hartwegii subsp. hartwegii Lowell Ahart 1980-5-19 2316 Butte Growing on the ridge east of the Golden Trout Crossing on the South Fork of the Feather River, about 4 miles west of the Sly Creek Dam. 1066 Comment
  CHSC31178  Iris macrosiphon M. S. Taylor 1980-3-1 2344 Butte Immediate vicinity of Elliot Spring House, s side of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC40324  Iris macrosiphon Lowell Ahart 1985-3-22 4848 Butte Found about 1/2 mile northeast of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. 450 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
  CHSC116710  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte On the very west edge of North Honcut creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC21053  Isoetes nuttallii M. S. Taylor 1975-4-26 516 Butte On the se side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC87218  Isoetes nuttallii Lowell Ahart 2004-4-4 10717 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CAS-BOT-BC61877  Isoetes nuttallii Lowell Ahart 1975-6-20 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut 38 Comment
  SEINET10470697  Isoetes nuttallii Lowell Ahart 1985-5-10 Ahart 4945 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  SEINET10530333  Isoetes nuttallii Mary Susan Taylor 1984-4-6 Taylor 5399 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
  HSC23348  Juglans hindsii S. K. Ray 1971-4-27 19 Butte N side of Gridley-Colusa Hwy., 0.5 mi. W of Randolph Ave. Jct., 0.5 mi. W of Gridley Comment
  CHSC111734  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte On the south side of Big Chico Creek, about 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  JEPS113851  Juncus Lowell Ahart 2007-6-12 14079 Butte Along the north edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock road and Rockefeller Road, about 13 miles (air) northeast of Oroville 982 Comment
  JEPS113839  Juncus articulatus Lowell Ahart 2007-7-11 14286 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  CHSC7194  Juncus balticus M. I. Moore 1969-4-26 16 Butte Upper Bidwell Park, ca. 1000 yds. nw of Salmon Hole - Big Chico Creek. 106 Comment
  JEPS98493  Juncus brachyphyllus Lowell Ahart 2000-6-27 8512 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  CHSC27576  Juncus bufonius var. bufonius Robert Schlising 1978-5-17 3263 Butte Magalia; serpentine outcrop just S of Magalia Res. And crossed by S. T. RR and Coutelenc Road. 670 Comment
  JEPS107943  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC90947  Juncus bufonius var. congestus Lowell Ahart 2005-4-18 11737 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC59018  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte In a very small meadow, on rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  JEPS118077  Juncus capitatus Lowell Ahart 2011-5-2 17346 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 32 Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  CHSC108321  Juncus covillei Lowell Ahart 2011-8-19 17640 Butte On the north side ofa good forest road and in the west gutter of a secondary road, about 1/2 mile north of the Lost Creek Reservoir Dam, about 4-1/2 miles (air) north of Clipper Mills. 1266 Comment
  UC1562378  Juncus dubius Vernon Oswald and Lowell Ahart 1990-7-31 4419 Butte ca 4 mi n Concow (meadow at the headwaters of Concow Creek); Concow Creek 1097 Comment
  CHSC111289  Juncus effusus subsp. effusus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16758 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of gravel Lumpkin road; UTM 10 655439 east, 4387540 north, +/- 49 feet (NAD83). Comment
  JEPS114882  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC47555  Juncus howellii Lowell Ahart 1984-7-19 4749 Butte In a small meadow, along Retson Road, about 1 1/2 miles southeast of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles northeast of Stirling City. 1371 Comment
  JEPS122148  Juncus howellii Lowell Ahart 2014-8-13 19705 Butte About 110 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA726662  Juncus howellii L. Ahart 2007-6-12 14079 Butte North edge of Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 982 Comment
  SEINET11787184  Juncus howellii Unknown 1983-1 4294 Butte along stream that flows into Butte Creek, 1 mi E of Butte Meadows 1450 Comment
  HSC100752  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Small spring on S side of road and wet meadow on N side, S side of a good forest road, 0.5 mi. N of Lost Creek Reservoir Dam, and 4.5 (air) mi. N of Clipper Mills. 1267 Comment
  CAS-BOT-BC312670  Juncus leiospermus Lowell Ahart 1978-5-2 1703 Butte Table Mt. 400 Comment
  CAS-BOT-BC123263  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC66970  Juncus leiospermus var. ahartii James D. Jokerst; Chuck Ricard 1993-4-12 3947 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  UC1543895  Juncus leiospermus var. ahartii Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC113239  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 350 Comment
  RSA304367  Juncus leiospermus var. leiospermus Barbara Ertter, Jeffrey L. Stranchan, L. Ahart 1980-5-7 3309 Butte North Table Mountain, 5 airmiles N of Oroville 396 Comment
  RSA712863  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12602 Butte About 2 3/4 miles west of the parking area, cow chute, and Cherokee Road. North Table Mountain, about 7 miles (air) north of oroville. 280 Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  UC1594619  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  JEPS114977  Juncus occidentalis Lowell Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  CHSC30434  Juncus triformis L. Ahart 1979-7-20 2474 Butte Along Bean Creek Road, near the south side of Little Bald Rock, ca. 15 mi NE of Oroville. 1100 Comment
  RSA726657  Juncus usitatus L. Ahart 2007-7-5 14250 Butte Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 23 Comment
  CAS-BOT-BC80922  Juniperus californica Don Heinz 1967-2-12 s.n. Butte Butte Co. dump, Neal Rd., ca. 7 mi. SE of Chico 106 Comment
  SEINET10547832  Keckiella breviflora subsp. glabrisepala Mary Susan Taylor 1980-5-15 Taylor 2622 Butte N of Chico along Cohasset Road. Comment
  JEPS95060  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte ca. 8 mi. (air) n.e. Stirling City (ca. 0.25 mi. e. of Table Mountain, on w. side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  CHSC48889  Kelloggia galioides Vernon Oswald; Lowell Ahart 1987-7-1 3051 Butte Scotts John Rd. 1.3 mi N of the road connecting Huboldt and Humbug Rds, ca 2.5 mi ENE of Jonesville. 1828 Comment
  JEPS119918  Kickxia elatine Lowell Ahart 2012-10-20 18506 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA262526  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile NE of Lake Wyandotte. 497 Comment
  CHSC103754  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC103990  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
  CHSC90806  Koeleria phleoides Lowell Ahart 2005-5-2 11769 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
  CHSC109148  Koelreuteria paniculata Lowell Ahart 2012-5-14 18066 Butte On the south side of the paved road, west of the horse trail, about 1/3 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 74 Comment
  CHSC28910  Kumlienia hystricula M. S. Taylor 1980-2-17 2367 Butte In embankment of creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC52820  Kumlienia hystricula R. E. Preston 1982-3-27 208 Butte N bank of McCabe Cr; ca. 1.7 mi s of Enterprise bridge over Lake Oroville, ca. 11 mi e of Oroville. 451 Comment
  CAS-BOT-BC274278  Lachnagrostis filiformis Lowell Ahart 1977-4-29 1520 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC340449  Lactuca saligna John Thomas Howell 1959-9-20 34704 Butte Feather River Highway at West Branch bridge Comment
  UC828872  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte on treeless hills 8 mi n Oroville Comment
  CAS-BOT-BC341321  Lagophylla glandulosa Alice Eastwood 1912-8-22 1933 Butte Payne Creek, Lassen Butte Region Comment
  CAS-BOT-BC271247  Lamarckia aurea Lowell Ahart 1980-3-23 2050 Butte West Branch Bridge, Highway 70 Comment
  CHSC3481  Lamium amplexicaule Roger Jaegel 1966-3-14 57 Butte Located four miles west of Chico in a young orchard along the bank of the Sacramento River near the Highway 32 bridge. Comment
  SEINET12319532  Lamium amplexicaule W. K. Cheechov 1978-1 18 Butte 200 FT ENE of Cohasset HWY, 0.7 MI N of East Lassen Ave. Chico 85 Comment
  CHSC113441  Lapsana communis Lowell Ahart 2014-7-7 19564 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CAS-BOT-BC337906  Lasthenia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 2 Butte On North Table Mtn., S of Paradise on Cherokee Rd., at the east end of Table Mtn. Proper 381 Comment
  CHSC112890  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  UCD73060  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
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  CHSC50107  Lathyrus brownii Vernon Oswald 1990-5-2 4179 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. On forest-meadow border on the north side of Big Chico Creek ca. 200 ft east of the spring. 1292 Comment
  JEPS98328  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  CAS-BOT-BC213339  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  RSA406664  Lathyrus jepsonii subsp. californicus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  SEINET10937186  Lathyrus nevadensis subsp. lanceolatus Mary Susan Taylor 1978-7-19 Taylor 1732 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  UC725530  Lathyrus nevadensis var. nevadensis A. A. Heller 1939-4-10 15373 Butte Comment
  UCD169101  Lathyrus odoratus Ramona Robison 2013-4-15 2 Butte Clay Pit State Vehicular Recreation Area. 41 Comment
  SEINET5327336  Lathyrus sativus R. McKee 1916-5-9 40281 Butte Chico Introduction Garden Comment
  CAS-BOT-BC213285  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC213290  Lathyrus sulphureus Clarence R. Quick 1952-6-30 52 -96 Butte Ridge top, Big Bar Mt. east of Pulga, Sierra Nevada Comment
  CDA15364  Lathyrus sulphureus G. F. Hrusa 1997-5-29 13801 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  CDA32004  Lathyrus tingitanus L. Ahart 2009-6-3 15811 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CAS-BOT-BC321777  Layia fremontii L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC101985  Layia fremontii Linda Osborne 1980-4-10 4 Butte Chico. Ca. 100 m SE of Notre Dame Blvd, 200 m NE of Skyway. Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  JEPS98546  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS120087  Lemna minuta Lowell Ahart 2012-6-5 18158 Butte On the south side of Beastson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC215732  Lepechinia calycina Lowell Ahart 1989-5-29 6305 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CHSC3354  Lepechinia calycina Robert L. Smith 1966-5-20 55 Butte Paradise, 5 miles SW of Postorrice. Comment
  CHSC34026  Lepidium pinnatifidum L. Ahart 1981-7-26 3013 Butte Ca. 1/2 mi s of the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  JEPS119961  Leptochloa fascicularis Lowell Ahart 2011-10-29 17731 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SEINET10934951  Leptochloa fascicularis Lowell Ahart 1991-7-20 Ahart 6666 Butte On the east side of West Butte Road, about 1/2 mile south of North Butte Road. Valley Grassland. T17N R1E SE/S33. 21 Comment
  CHSC1277  Leptosiphon bicolor P. Delaplane 1965-3-23 77 Butte H. Wurlitzer Ranch ca. 13 mi. NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC28978  Leptosiphon bolanderi R. A. Schlising 1980-3-17 3514 Butte E of Chico and SW of Paradise, along Skyway, on cliffs above Butte Creek. 213 Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  CDA13325  Leptosiphon filipes G. F. Hrusa, T. D. Wilfred 1996-7-9 13171 Butte Sierra Nevada; Approx. 1 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC62124  Leptosiphon filipes L. P. Janeway 1993-7-1 4416 Butte Plumas National Forest. North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the 'low water crossing' of French Creek. Cutbank. 624 Comment
  UC1287398  Lessingia nana Willard Spence 1960-9-7 624 Butte 0.5 mi off Rt. 99E on Cana Pine Creek Rd. (approximately half way between Chico and Vina) Comment
  CHSC38121  Lessingia nemaclada R. L. Ondricek-Fallscheer 1982-10-30 160 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  SD8923  Lessingia nemaclada Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC23865  Lessingia virgata Lowell Ahart 1976-9-4 1193 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC84457  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  UCD169079  Lessingia virgata Ramona Robison 2013-4-15 12 Butte Clay Pit State Vehicular Recreation Area, located two miles west of the town of Oroville. 41 Comment
  UCD134097  Lessingia virgata L. Ahart 1976-9-4 1193 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42469  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45654  Leucanthemum vulgare Vernon Oswald 1987-6-12 2992 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  UCR7826  Leucothoe davisiae Wm. Horn Jr. 1964-7-1 640701- 01 Butte 9 miles east of De Sabla 1159 Comment
  CHSC28421  Lewisia cantelovii M. S. Taylor 1979-9-28 2194 Butte Butte county line at Hwy 70, between boundary and ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  CHSC57131  Lewisia nevadensis L. P. Janeway; R. A. Schlising 1988-7-16 3024 Butte Meadow at 'headwaters' of Willow Creek. 1935 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC110991  Ligustrum sinense Lowell Ahart 2012-6-21 18208 Butte On the south bank of Big Chico Creek, about 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  SEINET3992016  Lilium parvum var. luteum E. B. Copeland, Mrs. Austin 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC4681  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  CHSC41229  Limnanthes alba J. D. Jokerst 1985-3-30 2187 Butte Roadside ditch. North edge of Wookey Rd, ca 1/2 mile east of Meridian Rd. 91 Comment
  CHSC76945  Limnanthes alba Margie Collins 1894-5-1 Butte Chico. Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  POM253300  Limnanthes douglasii A. A. Heller 1938-3-27 15005 Butte Along U.S. Highway 99E, junction with the Cana road. Comment
  HSC93612  Limnanthes floccosa subsp. californica James D. Jokerst 1980-3-27 520 Butte E of Cohasset Hwy. on S side of Richardson Springs Rd. 98 Comment
  UC1377648  Linanthus bicolor John Ingram and Arlynn Ingram 1960-4-5 294 Butte about 2 mi s Paradise (along Neal Road) Comment
  CHSC3959  Linanthus dichotomus M. Lee 1967-4-10 18 Butte Along roadside 2 1/2 mi. E. of Hwy 99E on Pentz Rd. Pentz. 136 Comment
  CHSC96235  Linanthus dichotomus R. Fischer 2006-4-10 990 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  SEINET12318323  Linanthus filipes E. D. Osman 1978-1 20 Butte ca 7.8 mi N of Chico and 200 E of Cohasset Hwy 76 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  UC133948  Linanthus pygmaeus Mrs. R. M. Austin Mar 1896 168 Butte e of Chico Comment
  CDA6352  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte On the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. Comment
  CDA20241  Lindernia dubia G. D. Barbe 1984-8-25 4189 Butte Sacramento Valley; Biggs Rice Experiment Station, N of Biggs. 0 Comment
  CHSC40896  Lindernia dubia var. anagallidea Lowell Ahart 1985-11-5 5226 Butte 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile wes of the Ponderosa Dam. 274 Comment
  UC1562492  Lindernia dubia var. anagallidea Lowell Ahart 1990-8-15 6580 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (along McCabe Creek, below the high water line of Lake Oroville); Lake Oroville, McCabe Creek 228 Comment
  CHSC109566  Linum bienne L. P. Janeway 2012-6-27 10918 Butte Northern High Sierra Nevada. On top of Sunset Hill. Edge of old disturbance surrounding fire lookout, radio towers and outbuildings. 1011 Comment
  JEPS98709  Linum bienne Lowell Ahart 2000-5-21 8375 Butte 2 mi N of Oroville (N margin of Table Mountain Boulevard, 300 yds SE of Garden Drive, about 1/10 mi NW of the Thermalito Diversion cut) 67 Comment
  CHSC78547  Lipocarpha micrantha Lowell Ahart 2000-9-2 8679 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC28632  Lithocarpus densiflorus M. S. Taylor 1979-3-31 1969 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  SACT002882  Lithocarpus densiflorus Herbert Copeland 1937-7-30 Butte In the foothills of Butte County. Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  CHSC3164  Lithophragma Dona Kingsford 1966-3-26 Butte Covered Bridge, 7 miles NE of Chico on damp hill side, Chico area. Comment
  CHSC2471  Lithophragma bolanderi R. Carter 1965-3-13 157 Butte Found on North Table Mt. ca. 20 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CHSC96229  Lithophragma bolanderi R. Fischer 2006-4-21 987 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at bottom of 10 Mile House Road, ca. 250 ft s of gated park property line.. 228 Comment
  CAS-BOT-BC430886  Lithophragma bolanderi M. S. Taylor 16/IV/1980 2496 Butte Lake Oroville State Recreation Area, ca. 1/4 mi S of Parish Camp, ca. 1 mi N of Hwy 70 bridge or Feather River, ca. 5 mi S of Paradise. Cherokee Quad.; The Pacific Coast. Comment
  CHSC49845  Lithophragma campanulatum Vernon Oswald; Lowell Ahart 1990-4-9 4156 Butte Feather Falls Trail between Frey Creek and Wagners Valley. 475 Comment
  CHSC50343  Lithophragma campanulatum Vernon Oswald 1990-5-29 4267 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CHSC38675  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 181 Butte Upper Bidwell Park Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC393  Logfia filaginoides B. Richardson 1929-4-21 Butte Flats above Chico. 67 Comment
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  UC625528  Lomatium caruifolium var. denticulatum Frank W. Gould 1938-4-23 311 Butte 2 mi. n. Chico 60 Comment
  UCD150870  Lomatium caruifolium var. denticulatum W. R. Powell 1968-4-22 1464 Butte 3 miles north of Honcut. 32 Comment
  CHSC90624  Lomatium dasycarpum subsp. tomentosum Steven H. Roth 1980-4-25 17 Butte 50 m north of Big Chico Creek at Diversion Dam in Upper Bidwell Park, Chico. Comment
  SEINET8693813  Lomatium macrocarpum R. McKee 1909-1 s.n. Butte Chico Comment
  CDA13872  Lomatium marginatum G. F. Hrusa, T. D. Wilfred 1997-5-7 13730 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  SEINET10454499  Lomatium marginatum Mary Susan Taylor 1981-4-5 Taylor 3490 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  SEINET10454504  Lomatium marginatum Lowell Ahart 1985-5-15 Ahart 4990 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC103740  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  SEINET10454538  Lomatium utriculatum Lowell Ahart 1985-5-15 Ahart 4976 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  SEINET10906779  Lomatium utriculatum Mary Susan Taylor 1982-5-2 Taylor 4392 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  UC600683  Lonicera conjugialis H. F. Copeland 1920-7-29 460 Butte Jonesville woods Jonesville Comment
  UC1586631  Lonicera hispidula var. vacillans Lowell Ahart 1991-6-22 6664 Butte near Lake Oroville (bottom of the abandoned water ditch, w of Springtown Road) 304 Comment
  CAS-BOT-BC240688  Lonicera interrupta J. F. Emmel 1970-4-5 252 Butte Mud Creek near Ponderosa Way 670 Comment
  CHSC196  Lonicera interrupta M. Roberson 1956-5-28 Butte Near Paradise along Skyway 548 Comment
  CAS-BOT-BC200894  Lotus Mrs. C. C. Bruce 1898-6-1 2431 Butte Forest-Ranch Comment
  UC1609419  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  SEINET10452682  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-19 Taylor 3808 Butte T22N R5E sw sec 23. Berry Creek quad. Both sides of 22N31, on Chibo Ridge ca. 2 mi NW of its jct with French Creek, ca. 4 air mi S of Coyote Gap, ca. 17 air mi NE of Oro- ville. Yellow Pine Forest; gravelly decomposed granite: 2800 ft. 853 Comment
  SEINET3694615 Image available Lotus macranthus A. A. Heller 1938-5-28 15125 Butte On Feather River Hwy west of Pulga Comment
  SEINET10906968  Lotus micranthus Mary Susan Taylor 1978-5-6 Taylor 1589 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET12161683  Lotus micranthus B. L. Wiley 1975-1 6 Butte 5.4mi up Cherokee Rd from junct w/ Table Mtn Blvd 488 Comment
  POM183153  Lotus oblongifolius var. nevadensis H. F. Copeland 1930-7-21 1315 Butte Jonesville by Butte Creek. 1524 Comment
  RSA406234  Lotus oblongifolius var. nevadensis M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  JEPS94851  Lotus oblongifolius var. oblongifolius Vernon H. Oswald and Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek 1 mi n of Four Trees-Coyote Gap Road; Wildcat Creek 1396 Comment
  CDA27292  Lotus purshianus D. G. Kelch 2006-8-2 6 .345 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  UCR219109  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  SEINET10874113  Lotus subpinnatus Mary Susan Taylor 1978-5-7 Taylor 1616 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS34381  Lotus wrangelianus Rimo Bacigalupi, and L. R. Heckard 1963-5-14 8857 Butte about 2 mi above and e Butte Creek Canyon beginning at jct with Paradise Skyway (along Humbug Road, bottom of Butte Creek Canyon); Butte Creek Canyon 91 Comment
  CHSC113152  Ludwigia palustris Lowell Ahart 2013-11-13 19250 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
  CHSC51007  Ludwigia palustris Lowell Ahart 1990-7-15 6565 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS95926  Ludwigia palustris Lowell Ahart 1999-8-22 8186 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
  JEPS98690  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  SJSU10702  Lupinus albicaulis F. S. Gereb 1968-5-4 93 Butte 5 mi E of Chico Comment
  SEINET10544023  Lupinus albicaulis subsp. shastensis James D. Jokerst 1981-5-6 Jokerst 1305 Butte Herbaceous perennial from a amny-branched multicipital caudex. Open area in Yellow pine forest with lithospermum sp and arctostaphylos viscida. Se of and Adjacent to detlow road ca 0.3 mie se of its western most junction with hwy 70, T22n,r4e,sec.34 ne 1/4 671 Comment
  CHSC33148  Lupinus albicaulis var. shastensis J. D. Jokerst 1981-5-6 1305 Butte SE of and adjacent to Detlot Road ca 1/3 mi SE of its western most junction with Hwy 70. 670 Comment
  SEINET5766838 Image available Lupinus albifrons subsp. eminens Lewis S. Rose 1931-1 s.n. Butte Oroville Comment
  CAS-BOT-BC201351  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49126 Butte Nimshew - 6.8 miles south - Chico Road Comment
  SEINET10484739  Lupinus arbustus subsp. silvicola Edwin B. Copel 1930-6-29 Copeland 421 Butte Common in open pine woods 1600 Comment
  SD241816  Lupinus bicolor G. K Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley: Middle Honecut Road, 1.5 miles east of CA-70, ESE of Gridley (Honcut 7.5'Q) 17 Comment
  CHSC35320  Lupinus bicolor var. pipersmithii M. S. Taylor; K. Tharp 1982-4-8 4291 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  SEINET11071881 Image available Lupinus densiflorus var. palustris J. A. Sheldahl 1968-4-20 30 Butte Table Mountain, Oroville 335 Comment
  SD2440  Lupinus laxiflorus var. silvicola E. B. Copeland 1930-6-29 Butte Jonesville 1600 Comment
  CDA27536  Lupinus microcarpus var. microcarpus T. C. Fuller 1958-4-15 5005 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  RSA589930  Lupinus nanus subsp. nanus Michael A. Vincent, Robert Rhode, Jim Snowden, Karl Vincent 1996-3-29 7220 Butte North Table Mountain, W of Cherokee Rd., N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  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
  CHSC30293  Lupinus nanus var. vallicola M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC103001  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 209 Comment
  CHSC31110  Lupinus polycarpus Roberta A. Boer 1980-4-13 3 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC83885  Lupinus polycarpus Lowell Ahart 2003-4-8 10038 Butte Pasture field, about 400 yards north of the falls on Coon Hollow, about 1/2 mile west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 331 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
  SEINET10490230  Lupinus sellulus var. artulus Edwin B. Copel 1931-7-3 Copeland 651 Butte Jonesville. Colby Canyon, in dry and barren openings. 1600 Comment
  CHSC36543  Lupinus stiversii L. Ahart 1982-6-4 3547 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  POM24970  Lupinus succulentus C. C. Bruce 1898-05 2454 Butte Sacramento River. Comment
  SD2404  Lupinus superbus var. elongatus E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  SEINET10452164  Lupinus vallicola Mary Susan Taylor 1976-3-30 Taylor 1042 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  RSA43304  Lupinus vallicola subsp. vallicola W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  RSA79047  Lupinus vallicola subsp. vallicola E. K. Balls, Percy C. Everett, B. K. Balls 1952-10-14 18216 Butte 2.6 miles SW of Butte-Plumas County line. Highway 24. 274 Comment
  CHSC52707  Luzula cascadensis L. P. Janeway 1987-6-26 2328 Butte Meadow just northwest of Logue Meadows along the road to Lynch Meadows. 1325 Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  RSA712826  Luzula comosa L. Ahart 2006-4-28 12547 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  CAS-BOT-BC436644  Luzula comosa var. laxa E. B. Copeland 1929-7-16 345 Butte Jonesville 1550 Comment
  CHSC29251  Luzula macrantha M. S. Taylor 1976-4-24 1076 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
  CHSC32365  Luzula macrantha J. D. Jokerst 1980-4-7 563 Butte E. of jct. of Upper Rocky Honcut Cr., and Swedes Flat Rd., (E of the town of Rackerby) SE of Oroville 10 mi. Comment
  CHSC55457  Luzula macrantha L. P. Janeway 1991-4-30 3918 Butte At the head of Spring Hollow, 2 mi east of confluence of South and North Forks Feather River (under Lake Oroville). 350 Comment
  SEINET10472425  Luzula parviflora Lowell Ahart 1991-8-25 Ahart 6705 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Road) just south of Jordan Creek, east of Oroville-Quincy Hwy, ca 5.75 miles (air) northeast of Brush Creek. Yellow Pine Forest. T22N R6E NW/SW/S14. 1082 Comment
  CHSC110347  Luzula subsessilis L. P. Janeway 2013-5-5 11098 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  JEPS120935  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  JEPS120840  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  SEINET6225032  Lythrum hyssopifolia L. S. Rose 1967-1 67102 Butte Oroville. Comment
  CDA18958  Lythrum salicaria R. Hill, Lee Pejas 2000-6-16 PDR 1170812 Butte on Hwy 99 at Dry Creek crossing. 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
  CAS-BOT-BC342716  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  CHSC46955  Madia exigua Lowell Ahart 1984-6-8 4666 Butte At the base of a cutbank, west of the little building at the south side of the Ponderosa Dam, about 2 miles north-west of Forbestown. 335 Comment
  CHSC105807  Madia glomerata Lowell Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  JEPS108733  Madia gracilis Lowell Ahart 2006-6-9 12649 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  UC830885  Madia gracilis A. A. Heller 12816 a Butte Butte Meadows 1402 Comment
  CHSC6014  Magnolia M. MacArthur 1968-6-19 269 Butte NE end of PSA bld., Chico State College. 60 Comment
  SEINET10965685  Magnolia grandiflora Mary Susan Taylor 1974-5-20 Taylor 253 Butte Chico. Comment
  POM182758  Maianthemum racemosum subsp. amplexicaule Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC46834  Malva parviflora R. A. Schlising 1986-11-28 4510 Butte Gray Lodge Waterfowl Management Area. 18 Comment
  JEPS119502  Malva parviflora Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC277734  Malvella leprosa Steven R. Hill; et al. 2010-7-17 38546 Butte Along west side of Aquas [Aguas] Frias road, 150 feet north of junction with Afton Road; about 4-5 kilometers south of CA Route 162; 12.4 kilometers west of Biggs 22 Comment
  CHSC107076  Marah fabacea V. Lockie; M. S. Williams 2010-3-23 Butte Chico State University Campus. Specimen found within 50' of Big Chico Creek, south of Holt Hall. 60 Comment
  RSA157758  Marah fabacea I. L. Wiggins 1925-3-22 1468 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  RSA440947  Marah fabacea K. M. Stocking 1947-4-17 27 Butte 1.2 miles S of 19th St.; Chico on Hwy 99. 59 Comment
  CHSC26878  Marah watsonii Robert A. Schlising 1963-5-4 2566 Butte Roadside near Cohasset. 426 Comment
  CHSC29019  Marah watsonii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2437 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi e of Oroville. 365 Comment
  CHSC29741  Marah watsonii J. D. Jokerst 1980-4-17 602 Butte Top of North Table Mt. N of Cherokee Rd. 454 Comment
  CHSC87456  Marah watsonii R. D. Fischer 2004-3-20 90 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and beginning of Pine Trail. 454 Comment
  CDA34161  Marrubium vulgare L. Ahart 2009-4-22 15581 Butte On the east side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  SEINET13709914  Marsilea vestita Lowell William Ahart, Lowell William Ahart 2002-1 9659 Butte Gray Lodge State Wildlife Management Area, 4 Mi. SW of Gridley, Edge of Drying Pond (T17N, R2E, sec 17, SE 1/4), 74 Ft. Comment
  CHSC101327  Matricaria discoidea Lowell Ahart 2009-4-22 15568 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
  CHSC42163  Meconella californica S. K. Fukuyama 1986-3-18 2 Butte 150 ft s of Butte Creek, ca 300 yds w of Covered Bridge, 6.3 mi ese of Chico. 118 Comment
  CDA31966  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC950  Medicago lupulina L. Nelson 1935-5-23 Butte Salmon Hole. 152 Comment
  SEINET12155163  Medicago orbicularis P. L. Ricker 1912-1 3941 Butte Chico Comment
  CHSC90496  Medicago polymorpha L. Orme 1980-3-15 3 Butte West of railroad tracks, 0.8 km southwest of Chico. Edge of a cultivated field. 55 Comment
  CHSC110952  Medicago praecox L. P. Janeway 2013-3-21 11086 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the well-developed steep un-official trail +-under the upper powerlines, connecting Upper Trail to North Rim Trail. 189 Comment
  CDA4226  Medicago scutellata P. B. Kennedy 1924-1 Butte Chico. 0 Comment
  CAS-BOT-BC47739  Melia azedarach John Thomas Howell 1961-9-22 36739 Butte Feather River, Oroville 53 Comment
  CAS-BOT-BC271132  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  JEPS110337  Melica aristata Lowell Ahart 2006-7-16 12966 Butte East of the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  UC398887  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  UCSB63913  Melica aristata Ahart, Lowell 1997-8-1 Butte South side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City; T24N, R5E, northwest 1/4 Section 18 1432 Comment
  CAS-BOT-BC269376  Melica californica Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 miles se of Paradise 500 Comment
  CAS-BOT-BC269384  Melica californica John Thomas Howell; H. Keith Wagnon 1980-5-26 53577 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  CHSC44575  Melica californica Lowell Ahart 1979-5-29 1893 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC8255  Melica californica Dave Isle 1969-4-10 295 Butte In meadow above the N. shore of Horseshoe Lake in Upper Bidwell Park E. of Chico. 59 Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  UC398888  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville Comment
  CAS-BOT-BC262503  Melica torreyana A. A. Heller 1915-4-20 11859 Butte 7 miles below Centerville in the Sierra foothills 76 Comment
  JEPS116074  Melica torreyana Lowell Ahart 2009-5-30 15803 Butte On the northeast 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
  POM114759  Melica torreyana C. C. Bruce 1898-05 2378 Butte [No locality information provided] Comment
  CHSC31880  Melilotus indicus L. Ahart 1977-5-22 1398 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch. 50 Comment
  UC1586473  Melilotus officinalis Vernon H. Oswald and Lowell Ahart 1991-7-15 4734 Butte Forest Rd No 23N60 (Jordan Creek-Marble Creek Rd) 2.1 mi e junction with Oroville-Quincy Hwy (ca 5.75 air mi ne of Brush Creek) 1082 Comment
  CHSC102727  Melissa officinalis Lowell Ahart 2009-6-19 15949 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
  CHSC110327  Mentha arvensis B. Castro; Margie Graham 2006-8-25 1608 Butte Sacramento Valley. Ca 3 mi W of Highway 99 and 2 mi S of Richvale and ca 250 ft N of Hwy 162 in Cherokee Canal.. On E side of canal abt 120 ft in from toe of E levee. 29 Comment
  CHSC75998  Mentha pulegium Lowell Ahart; Vernon Oswald 1999-8-13 8164 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
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 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
  CAS-BOT-BC428755  Micranthes californica Lowell Ahart 1979-4-3 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC429072  Micranthes odontoloma H. F. Copeland 1930-7-12 s.n. Butte Jonesville 2000 Comment
  SEINET223506  Microcala quadrangularis Unknown 1980-5-7 3294 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Maryville, 30 Comment
  CHSC101970  Micropus californicus J. Boze 1982-5-8 438 Butte Along edge of Horseshoe Lake in Upper Bidwell Park. Comment
  CAS-BOT-BC348320  Micropus californicus Lowell Ahart 1980-4-30 2137 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC96563  Micropus californicus var. californicus L. P. Janeway 2006-4-30 8564 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC348705  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte 8 miles north of Oroville Comment
  CHSC83924  Microseris acuminata Lowell Ahart 2003-4-10 10058 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  CHSC38384  Microseris douglasii subsp. douglasii Vernon Oswald 1983-5-4 433 Butte Upper Bidwell Park, Chico, in the flat along the n-e side of Horseshoe Lake. 103 Comment
  RSA181843  Microseris douglasii subsp. douglasii W. L. Jepson 1932-5-9 16370 Butte Low spot along the Red Bluff - Chico road, a few miles northeast of Chico Comment
  CHSC31661  Microseris elegans L. Ahart 1978-4-27 1674 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  CHSC40487  Microseris lindleyi Lowell Ahart 1985-4-29 4883 Butte Along the sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 60 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
  CHSC34992  Microsteris gracilis R. A. Schlising 1980-6-10 3664 Butte Along Humboldt Road, 1.9 mi NE of jct with Highway 32 at Lomo. Comment
  UCD118927  Microsteris gracilis Michael A. Vincent; Ethan H. Freid 1998-4-6 8121 Butte Table Mountain. Comment
  UCR190687  Mimulus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  HSC66316  Mimulus aurantiacus var. grandiflorus G. L. Cranford 1968-4-23 29 Butte 4 mi. E of Chico, on Covered Bridge Rd. 305 Comment
  UC625527  Mimulus glaucescens Frank W. Gould 1938-4-23 304 Butte 2 mi n Chico 60 Comment
  CHSC118862  Mimulus guttatus Christopher T. Ivey 2017-5-27 388 Butte Honeyrun Road, about 3 km NE of bridge crossing Butte Creek, wet meadow E side of road. 163 Comment
  SEINET8390054  Mimulus guttatus E. B. Copeland 1929-7-28 464 Butte Jonesville. 1500 Comment
  RSA535808  Mimulus kelloggii David M. Thompson, Vernon H. Oswald 1988-3-24 852 Butte Upper Bidwell Park, Chico. 2.9 mi. beyond (N of) 4 barrels and sign in middle of road; just beyond end of paved road. W side of road on small cavelike rock formation on hillside, ca. 100 ft from road. 244 Comment
  UC195474  Mimulus moniliformis A. A. Heller 1914-6-22 11511 Butte Chico Meadows 1219 Comment
  POM193346  Mimulus primuloides var. pilosellus E. B. Copeland 1930-7-15 460 -A Butte Jonesville. 1500 Comment
  UC1562310  Mimulus tilingii Vernon Oswald and Lowell Ahart 1990-7-19 4376 Butte ca 3 mi e Philbrook Reservoir (ca 0.4 mi w of Plumas Co. line, s side of creek); Philbrook Creek 1920 Comment
  JEPS80654  Mimulus torreyi M. S. Taylor 1981-4-27 3555 Butte ca. 2 mi sw Brush Creek (ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd., ca. 0.5 mi n of Zink Rd.) 1005 Comment
  UC726132  Mimulus tricolor A. A. Heller 1940-5-13 15614 Butte 3 mi w Chico (along State Hwy 32) Comment
  JEPS110438  Minuartia californica Lowell Ahart 2006-4-27 12540 Butte Side of a bank, about 100 yards south of the fence and tower, pasture fields, about 4/5 mile north and 1 3/4 miles east of Honcut 49 Comment
  UCD98264  Minuartia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8122 Butte Table Mountain. Comment
  CHSC103666  Minuartia cismontana Lowell Ahart 2010-4-30 16602 Butte Open are along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC65195  Minuartia cismontana Lowell Ahart 1995-5-30 7588 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  CHSC43378  Minuartia douglasii Lowell Ahart 1978-4-17 1646 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 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
  CAS-BOT-BC433047  Mitella pentandra Vernon Oswald; Lowell Ahart 1987-7-1 3087 Butte Ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CHSC24647  Moehringia macrophylla S. Deaton 1976-4-14 11 Butte NW edge of Feather Falls trail, 1 5/8 mi n of Falls parking lot. 853 Comment
  CHSC63958  Moehringia macrophylla B. Castro; L. P. Janeway, L. Gehrung 1994-4-18 508 Butte On Watson Ridge, on N-facing edge of large knoll. Ca 20 ft uphill from old trail. 1133 Comment
  RSA65745  Mollugo verticillata F. W. Peirson 1926-6-20 6762 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  CHSC111978  Monardella breweri subsp. lanceolata Lowell Ahart 2012-6-2 18135 Butte Along the east side of a poor dirt road, about 100 yards north of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 286 Comment
  SEINET13948592 Image available Monardella lanceolata A. A. Heller 1914-1 11628 Butte Near Forest Ranch; 2400 ft alt. 732 Comment
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 Comment
  CHSC26689  Monardella odoratissima subsp. pallida M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1489 Butte At Humboldt Summit, at Butte-Tehama county line. In forest on Butte side. 2133 Comment
  RSA107826  Monardella odoratissima subsp. pallida L. S. Rose 1955-6-15 55105 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  UC525885  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  SEINET10836960  Monardella odoratissima subsp. pallida Mary Susan Taylor 1978-7-18 Taylor 1685 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
  CDA14090  Monardella sheltonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13975 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC109560  Monardella sheltonii L. P. Janeway 2012-6-23 10888 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  RSA277730  Monochoria vaginalis D. D. Keck, T. C. Fuller 1976-10-4 20166 Butte Rice Experiment Station, 3 miles N of Biggs, Butte County Comment
  UC1609040  Montia fontana Lowell Ahart 1993-7-31 7142 Butte about 2 mi se of Bald Mountain (w side dirt road that leads to a camp, just w of where the dirt road crosses Big Kimshew Creek) 1493 Comment
  CAS-BOT-BC444889  Montia fontana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. 70 Comment
  CHSC42480  Montia fontana subsp. amporitana Lowell Ahart 1987-5-12 5631 Butte On damp bare broken black lava, in a seep, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC54372  Montia fontana subsp. amporitana M. Bailey 1991-3-8 548 Butte Edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC87231  Montia fontana subsp. amporitana Lowell Ahart 2004-3-1 10700 Butte In a small depression, near low rocks, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 62 Comment
  CHSC1376  Montia fontana subsp. chondrosperma V. Holt 1941-3-1 Butte Table mountain near Oroville. 426 Comment
  CHSC39886  Montia fontana subsp. chondrosperma M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5405 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  JEPS118632  Morus alba L. P. Janeway 2011-5-9 10252 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CAS-BOT-BC260540  Muhlenbergia filiformis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mountain region located ca 6 air miles SE of Jonesville 1996 Comment
  CHSC39428  Muhlenbergia filiformis L. Ahart 1983-8-16 4305 Butte Near Bull Hill Road, ca. 3 miles south of Butte Meadows. 1450 Comment
  JEPS95821  Muhlenbergia filiformis Lowell Ahart 1999-10-3 8284 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
  RSA129344  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow. 1341 Comment
  RSA585114  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  CHSC34166  Muhlenbergia mexicana L. Ahart 1981-9-19 3182 Butte Along banks of Feather River ca. 100 m n of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  UCD86785  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CAS-BOT-BC274934  Muhlenbergia rigens Lowell Ahart 1977-2-20 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC41526  Muhlenbergia rigens R. L. Ondricek-Fallscheer 1982-10-24 158 Butte Below seepage area, on rim of cliff, se side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 152 Comment
  CHSC29372  Myosotis discolor R. A. Schlising; R. Banchero 1980-6-6 3655 Butte N of L. Oroville, on Bald Rock Road, 1.5 mi s of jct with Oroville-Quincy Highway in Brush Creek. 944 Comment
  CHSC40322  Myosurus minimus Lowell Ahart 1985-4-21 4880 Butte Found near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC65461  Myosurus minimus Vernon Oswald 1988-4-18 3273 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Near the southeast corner of the large vernal pool which is located mostly on Rancho Esquon. 45 Comment
  HSC66354  Myosurus minimus M. S. Taylor, J. D. Jokerst 1980-3-28 2397 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  SEINET10536209  Myosurus minimus Mary Susan Taylor 1975-4-18 Taylor 483 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  SEINET12093734  Myosurus minimus Unknown 1985-1 4880 Butte S of Central House Rd., NW of Honcut, about 12 mi S of Oroville, along sides of Wyandotte Creek 35 Comment
  CHSC43252  Myriophyllum spicatum Lowell Ahart 1987-9-4 5875 Butte In a deep drain ditch, along the Biggs Princeton Highway, under P. G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CHSC80653  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  JEPS122197  Myriophyllum spicatum Lowell Ahart 2014-4-16 19372 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET10907333  Nasturtium officinale Mary Susan Taylor 1974-4-28 Taylor 211 A Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CHSC35112  Navarretia capillaris R. Schlising 1980-6-20 4102 Butte NE part of county at Jones Meadow. 1767 Comment
  CHSC35114  Navarretia capillaris R. A. Schlising 1980-7-16 3912 Butte N part of county NE of Butte Meadows and SW of Jonesville; meadow and streamside of Butte Creek near Cherry Hill Campground. Comment
  POM219095  Navarretia capillaris H. F. Copeland 1928-8-18 374 Butte Neighborhood of Jonesville; near Butte Creek. 1524 Comment
  JEPS124021  Navarretia divaricata subsp. divaricata Lowell Ahart 2015-6-16 20237 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
  UCD48400  Navarretia filicaulis M. S. Taylor; J. D. 1979-6-12 2297 Butte Off dirt rd from Magalia serpentine area to Feather River, ca. 0.5 mi up from the river. 670 Comment
  JEPS104465  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  SEINET10496827  Navarretia intertexta Mary Susan Taylor 1980-5-15 Taylor 2627 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
  CHSC102608  Navarretia intertexta subsp. intertexta L. P. Janeway; B. Castro 2009-7-4 9841 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
  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
  CHSC69049  Navarretia leptalea subsp. leptalea Lowell Ahart 1997-8-1 7781 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC1609318  Navarretia leptalea subsp. leptalea Lowell Ahart 1993-6-26 7035 Butte about 1 (air) mi nw Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); nw of Lost Creek Reservoir Dam, Mooreville Ridge, Jackass Fl 1158 Comment
  CHSC1295  Navarretia leucocephala J. Gulick 1929-4-18 Butte Rifle Range, near Chico creek. 76 Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  RSA717291  Navarretia leucocephala subsp. leucocephala L. Ahart 2005-5-28 11818 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CAS-BOT-BC230475  Navarretia nigelliformis var. nigelliformis David D. Keck 1933-5-30 2415 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains Comment
  CHSC36710  Navarretia pubescens D. H. Ikeda 1980-5-10 349 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in field. Comment
  POM65860  Navarretia pubescens A. A. Heller, H. E. Brown 1902-5-14 5547 Butte Berry Canyon (near Clear Creek) Comment
  SD122564  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi from junction of Lunt Rd. and Nelson-Bar Rd. Comment
  UC1719846  Navarretia pubescens David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  JEPS107893  Navarretia tagetina Lowell Ahart 2005-5-28 11821 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  OBI05727  Navarretia viscidula H. F. Copeland 1932-6-24 Butte Near Hog Springs, about 5 miles north of Chico, on the Humboldt Road. Comment
  CHSC39329  Navarretia viscidula subsp. purpurea Lowell Ahart 1983-6-26 4133 Butte Found along the edge of Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  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
  CHSC32657  Nemophila heterophylla M. S. Taylor; L. Hanson 1981-3-16 3411 Butte Shaded embankment, e side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC33375  Nemophila heterophylla Steven Azevedo 1980-4-16 13 Butte S edge of Mudd Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC84917  Nemophila heterophylla W. Dobson 1980-5-25 21 Butte Ca. in Wagner Valley. 542 Comment
  UC107252  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; near Clear Creek 53 Comment
  CHSC115293  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC28653  Nemophila pedunculata M. S. Taylor 1979-3-31 1967 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi n of Concow Rd and Lake Concow. 670 Comment
  CHSC39095  Nemophila spatulata Robert Schlising; R. Banchero 1980-6-2 3629 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  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
  CHSC66447  Nicotiana quadrivalvis Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 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 riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  SEINET12342944  Odontostomum hartwegii Unknown 1936-1 13214 Butte along Mud Creek near Chico Comment
  JEPS120001  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET12166457  Onobrychis viciifolia M. S. Taylor 1982-1 4734 Butte T23N R5E sw1/4 sw1/4 Sec 29. Pulga SW quad. end of Spur rd along Flea Valley Ridge, see comments 1067 Comment
  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
  CHSC51852  Oreostemma alpigenum var. andersonii L. P. Janeway 1987-7-5 2440 Butte 0.4 mi E on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CHSC45305  Orobanche californica subsp. jepsonii V. Oswald; R. Schlising 1988-9-12 3700 Butte Rocky ridge ca. 3 mi (air) e of Jonesville. 2026 Comment
  JEPS12903  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, west of willow Creek. Comment
  RSA176419  Orthocarpus campestris A. A. Heller 1927-4-25 14349 Butte Near the 'Y' along the state highway between Oroville and Richvale. This station is not many miles from where Hartweg collected the type. Comment
  RSA189381  Orthocarpus erianthus L. S. Rose 1967-5-6 67054 Butte Oroville. 52 Comment
  CHSC11877  Osmorhiza chilensis E. B. Copeland 1929-7-23 391 Butte Jonesville. 1550 Comment
  JEPS87150  Osmorhiza occidentalis Lowell Ahart 1992-7-29 6877 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake) 1798 Comment
  JEPS95963  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte Bidwell Sacramento River State Park; Sacramento River; Big Chico Creek; Chico 36 Comment
  CAS-BOT-BC334337  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 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
  CHSC26787  Packera eurycephala var. lewisrosei M. S. Taylor 1978-5-6 1582 Butte Magalia. 609 Comment
  CHSC41348  Panicum acuminatum R. A. Schlising 1981-6-27 4111 Butte N part of county NE of Lomo along Humboldt road. 1341 Comment
  UC768483  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC34203  Panicum capillare J. D. Jokerst 1981-9-26 1486 Butte Bidwell River State Park (Chico landing) ca 5.0 mi W of Chico. Comment
  UC819486  Panicum capillare A. A. Heller 1916-9-30 12665 Butte 8 mi n Oroville; n of Oroville Comment
  UCD89813  Panicum capillare subsp. hillmanii W. H. McHenry 1969-11-10 s.n. Butte Durham. 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
  UCD38753  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  SEINET10901935  Panicum dichotomiflorum Lowell Ahart 1990-9-30 Ahart 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CHSC51041  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-8-15 6582 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC44431  Parentucellia viscosa Lowell Ahart 1988-5-29 6008 Butte Near a small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC52374  Parentucellia viscosa L. P. Janeway 1989-5-13 3234 Butte NE corner of Durham-Pentz Rd and Lake Hills Dr (pvt) 1.0 mi E of hwy 191. 115 Comment
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  HSC92450  Parentucellia viscosa L. Ahart 1976-5-25 1128 Butte S side of Cox Lane, 1/10 mi. W of Palermo Honcut Hwy., 4 mi. N of Honcut, 10 mi. S of Oroville 34 Comment
  SEINET10973377  Parvisedum pumilum Mary Susan Taylor 1975-4-29 Taylor 537 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  UCD88690  Paspalum boscianum Elizabeth Wilson 1934-8-9 s.n. Butte Biggs Rice Station. Comment
  CHSC110343  Paspalum distichum B. Castro 2006-8-10 1597 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On W side of canal about 30 ft N of dirt road crossing the canal. 35 Comment
  CHSC46853  Pectiantia pentandra R. A. Schlising; P. Broyles 1987-6-26 4525 Butte NE of Inskip, just E of Brown Ravine, on small tributary of Last Chance Creek. 1584 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC50539  Pellaea breweri Vernon Oswald; Lowell Ahart 1990-6-20 4310 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1962 Comment
  CHSC3223  Pellaea mucronata Virginia Hagaman 1966-3-28 93 Butte On Table Mountain. Comment
  JEPS116127  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC382578  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1896 221 Butte Iron Canyon Comment
  SEINET10824302  Penstemon azureus var. azureus Lowell Ahart 1987-5-9 Ahart 5580 Butte Along Pulga Road, about 1/4 mile West of Bardees Bar along the North Fork of the Feather River, about 2.5 miles South-West of Pulga. 366 Comment
  CHSC11887  Penstemon deustus var. suffrutescens E. B. Copeland 1931-6-11 690 Butte Jonesville. 1750 Comment
  CHSC51929  Penstemon heterophyllus var. purdyi Cathy Young 1988-4-24 13 Butte Ca. 5.5 mi NE of Chico, 50 yds SE of Hwy 32. 256 Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC43076  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3809 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy 32 along Garland Road. 902 Comment
  CHSC44710  Penstemon laetus var. leptosepalus R. Banchero 1980-6-6 204 Butte The southern jct of Bald Rock Rd and Zink Rd. 705 Comment
  JEPS118483  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  NY604513  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  SD4632  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville, pine and fir woods 1550 Comment
  UC102996  Penstemon rydbergii var. oreocharis Mrs. R. M. Austin 1899-7-1 232 Butte Colby Comment
  JEPS113228  Pentagramma triangularis Lowell Ahart 2007-5-22 13918 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, a 844 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
  CHSC11325  Pentagramma triangularis subsp. semipallida Lowell Ahart 1967-4-12 Butte Bidwell Bar. 121 Comment
  CHSC28988  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-19 2390 Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC32690  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-3-24 3439 Butte On s side of Hwy 70 just e of Heinz Creek, ca. 1 mi e of Pulga. 487 Comment
  CHSC96815  Pentagramma triangularis subsp. semipallida Lowell Ahart 2007-5-22 13918 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
  CHSC101286  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-17 15555 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  JEPS116132  Pentagramma triangularis subsp. triangularis Lowell Ahart 2009-4-17 15555 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 351 Comment
  SEINET3166411  Pentagramma triangularis subsp. triangularis P. J. Alexander 2009-5-27 1049 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  CHSC42645  Perideridia bacigalupii Vernon Oswald 1985-9-5 1938 Butte Black Bart Rd. 2.1 mi se of its western junction with Forbestown Rd. 662 Comment
  CHSC37133  Perideridia bolanderi subsp. involucrata L. Ahart 1982-7-1 3654 Butte Ca. 1 1/4 mi n and 2 1/2 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  UC1390028  Perideridia bolanderi subsp. involucrata T. I. Chuang and L. Constance 1967-6-21 6058 Butte 1.9 mi se Highway 70 (on road from Cherokee to Oregon City) Comment
  JEPS12433  Perideridia kelloggii H. A. Dutton 1912-1 Butte e Chico; Hooker Oak Comment
  SEINET10454549  Perideridia lemmonii Mary Susan Taylor 1977-8-17 Taylor 1467 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
  UC1532350  Perideridia oregana Vernon Oswald 1986-6-11 2109 Butte on Yahi Trail near Salmon Hole; Chico, Upper Bidwell Park 158 Comment
  CHSC40238  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 b Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd. at the W. Branch of the Feather R. 1615 Comment
  CHSC31763  Persicaria hydropiper L. Ahart 1977-9-20 1582 Butte Peter Ahart Ranch, Honcut, along edges of North Honcut Creek. 50 Comment
  CHSC37113  Persicaria hydropiper L. Ahart; M. S. Taylor 1982-10-11 3864 Butte Along edges of large duck pond, ca. 0.1 mi w of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC42730  Persicaria hydropiper Lowell Ahart 1987-5-27 5716 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
  CHSC50682  Persicaria hydropiper Lowell Ahart 1990-5-25 6493 Butte On the sides of a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC110398  Persicaria maculosa Lowell Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC94487  Persicaria maculosa Lowell Ahart 2006-8-29 13236 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  UCD99576  Persicaria maculosa J. W. Jones 1929-9-26 s.n. Butte Biggs Rice Station. Comment
  SBBG119817  Persicaria punctata L. Ahart 2006-10-8 13428 Butte E side of the N Fk of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, ca. 0.5 mi N of Cresta Power House 609 Comment
  POM73732  Phacelia cicutaria var. cicutaria C. C. Bruce 1897-05 1982 Butte Iron Canyon. Comment
  CHSC3837  Phacelia egena L. E. Dunkel 1965-6-4 18 Butte Scattered along banks of East Br. Mud Creek, ca 600 yards e of entrance gate to Richardson Springs Resort from Cohasset Road. 33 Comment
  UC1564802  Phacelia heterophylla subsp. virgata V. Oswald and L. Ahart 1989-7-12 3842 Butte logging road (T-line) 0.6 air mi nnw Bald Mtn Lookout (ne of Stirling City) 1560 Comment
  CHSC39116  Phacelia vallicola L. Ahart 1982-6-4 3534 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  UC1609370  Phacelia vallicola Lowell Ahart 1993-6-20 6989 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET13095392  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte 2 miles west of Arch Rock Tunnel. Comment
  CHSC78113  Phalaris brachystachys Shelly Pirtle 1997-4-9 32 Butte +/- 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Fields. Comment
  CHSC7187  Phalaris caroliniana J. G. Moore 1969-4-18 125 Butte 350 yds. nw of Cherokee Rd. 1 mi s of Oregon City turnoff. In meadow. 381 Comment
  CHSC61545  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte Rice field, east of the Cherokee Canal and north of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CAS-BOT-BC250705  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale Comment
  UCD89392  Phalaris paradoxa A. A. Heller 1919-8-13 13352 Butte Between Nelson and Richvale. Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  UC1392744  Philadelphus lewisii R. F. Hoover 1968-5-29 11136 Butte Cohasset Road Comment
  CAS-BOT-BC250861  Phleum pratense M. S. Taylor 1982-6-24 4728 Butte SE of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  SEINET11688461  Phleum pratense Unknown 1985-1 5156 Butte Forbestown Res., ca 50 yds S of Generator, ca 4.5 mi NE of Forbestown 351 Comment
  CHSC1304  Phlox speciosa subsp. occidentalis R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  JEPS123873  Phlox speciosa subsp. occidentalis Lowell Ahart 2015-4-30 20121 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Comment
  JEPS21864  Phlox speciosa subsp. occidentalis Annette Waters 1958-4-19 227 Butte 2.5 mi e Lumpkin Road (on Oroville-Forbestown Road, en route to Oroville) Comment
  CAS-BOT-BC135100  Phoradendron juniperinum M. S. Taylor 1981-4-8 3509 Butte N side of spur rd, ca. 1/3 mi W of its jct with Ponderosa way, ca. 5 mi N of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi N of Oroville Comment
  CHSC11788  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 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
  CHSC116677  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yaards north of the intersection of Smullin Road and Ahart Road, east side of Honcut, about 13 miles south of Oroville. 30 Comment
  JEPS115304  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC33216  Phyla nodiflora var. rosea R. E. Preston 1981-6-19 97 Butte On bank of canal, ca. 0.8 km s of Headquarters, Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. 20 Comment
  SEINET10547000  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 Ahart 6725 Butte On the south end of the dam, at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC49439  Physalis lancifolia Vernon Oswald 1983-10-10 1067 Butte Near Chico on Bell Rd. ca. 1/4 mi s of the Mud Creek Diversion Channel. Along the edge of a young orchard. Comment
  UCR133596  Physalis lancifolia H. F. Copeland 1923-8-13 809 Butte Nelson, Railroad Right of Way 37 Comment
  CDA5819  Physalis lancifolia M. R. Pryor 1949-10-13 Butte 1 mile west of Biggs on Afton Road. 0 Comment
  CHSC35299  Physocarpus capitatus Robert A. Schlising; Coleta Lawler 1981-8-8 4192 Butte Concow Reservoir E of Paradise. At roadside. Comment
  CHSC36431  Physocarpus capitatus Robert A. Schlising; Coleta Lawler 1981-8-8 4192 Butte E of Paradise at Concow Reservoir. Roadside. Comment
  CHSC46365  Pickeringia montana Lowell Ahart 1989-5-29 6304 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road. 670 Comment
  SEINET10449366  Pieris japonica Mary Susan Taylor 1975-5-6 Taylor 554 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC26810  Pilularia americana M. S. Taylor 1978-5-7 1605 Butte In Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  HSC66078  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte E of Chico, NE corner of jct. of Notre Dam Blvd. and the Skyway, 1/8 mi. E of Hwy. 99 69 Comment
  SEINET10530649  Pinus attenuata Mary Susan Taylor 1981-4-16 Taylor 3548 Butte T21N R5E sw sec 24, Brush Creek quad. Both sides of Rd 21N80, ca. 1 mi NW of its jct with Zink Rd, ca. 1.5 mi NW of Big Bald Rock, ca. 2 air mi E of Lake Madrone. Yellow Pine Forest; 2900 ft. 884 Comment
  CAS-BOT-BC78450  Pinus contorta subsp. murrayana John H. Thomas 1974-11-3 17660 Butte Between Stirling City and Butte Meadows, north of Chico. 4.9 miles from Butte Meadows as measured along the road 1524 Comment
  SD23  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  NY61576  Pinus jeffreyi E. B. Copeland 1929-7-19 333 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
  CHSC61524  Piperia transversa Lowell Ahart 1993-6-16 6960 Butte On the east side of the Enterprise Boat Launch Parking Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 304 Comment
  CHSC34785  Piptatherum miliaceum L. Ahart 1981-9-26 3207 Butte Near the Sacramento River s of the washout, ca. 6 mi w of Chico. 40 Comment
  CHSC98915  Piptatherum miliaceum L. P. Janeway 2007-12-11 9221 Butte Northern Sierra Nevada Foothills. Flats on top of bluffs along east side of Feather River between Fish Barrier Dam and Thermalito Diversion Dam. 58 Comment
  POM365989  Piptatherum miliaceum L. Ahart, Peter Ahart 1984-6-10 4690 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  CHSC21379  Pittosporum tobira M. S. Taylor 1975-6-22 784 1/2 Butte Hedge on s side of Holt Hall, California State Univeristy, Chico, ornamental. Comment
  SEINET10529830  Pityrogramma triangularis Mary Susan Taylor 1980-2-23 Taylor 2316 A Butte T22N R3E nw 1/4 sec 25 Cherokee quad. E side of Sawmill Road, ca. 0.5 mi S of Pearson Rd, Paradise. 610 Comment
  CHSC29044  Plagiobothrys bracteatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 545 Butte Table Mountain, S. of Cherokee Rd. Around the edge of the high water mark of vernal pools. 403 Comment
  CHSC29039  Plagiobothrys glyptocarpus J. D. Jokerst 1979-4-20 543 Butte In the bottoms of vernal pools below the high water mark. Top of North Table Mt, N of Cherokee Rd. 403 Comment
  JEPS77831 Image available Plagiobothrys glyptocarpus A. A. Heller 1914-5-16 11202 Butte 8 mi n Oroville Comment
  SFV3138  Plagiobothrys glyptocarpus M. L. Vincent 1962-4-17 202 Butte Sierra Nevada Cherokee Road at Table Mountain. Comment
  CHSC116716  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 2016-5-24 20857 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) northeast of Honcut. 44 Comment
  CHSC44480  Plagiobothrys greenei Lowell Ahart 1988-5-12 5995 Butte On the bottom of a mine hole, in a mined over area, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  POM71486  Plagiobothrys nothofulvus C. C. Bruce 1897-05 1929 Butte Chico. Comment
  CHSC109114  Plagiobothrys scriptus Lowell Ahart 2012-3-23 17798 Butte Botttom of a small path, 90 feet north of a large Gray Pine, north end of the Disc Golf Area, about 50 yads west of Highway 32, about 5 miles (air0 northeast of Chico. 395 Comment
  CHSC35056  Plagiobothrys scriptus R. A. Schlising 1981-3-16 4002 Butte About 3 miles E of Chico along Humboldt Road, paralleling Hwy 32. At roadside. 114 Comment
  UC1601376  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC113391  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2014-6-1 19533 Butte Manmade shallow duck field, about 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC13522  Plagiobothrys stipitatus var. micranthus S. Poe 1974-4-22 9 Butte Ca. 50 yds. s of Fern Bank area, upper Bidwell Park. 73 Comment
  CHSC90480  Plagiobothrys stipitatus var. micranthus Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11665 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC90645  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-4-2 11682 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
  CHSC46775  Plagiobothrys tenellus Lowell Ahart 1980-4-30 2139 Butte Near the bridge across Rocky Honcut Creek and Swedes Flat Road, about 3 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  SEINET10499841  Plantago bigelovii Mary Susan Taylor 1975-4-18 Taylor 482 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  SEINET10499842  Plantago bigelovii Mary Susan Taylor 1978-4-14 Taylor 1550 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC52100  Plantago erecta Evelyn Jo Baker 1984-2-28 5 Butte W side of Cohasset Rd., 100 yds n of Richardson Springs Road, ne of Chico. Comment
  JEPS119615  Plantago erecta Lowell Ahart 2012-4-9 17838 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  RSA715920  Plantago erecta L. P. Janeway 2005-3-10 8343 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  UC195449  Plantago erecta A. A. Heller 1914-4-14 11288 Butte 8 mi n Oroville Comment
  CHSC102827  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC38583  Plantago lanceolata Vernon Oswald 1983-5-4 428 Butte Upper Bidwell Park, Chico, beside trail on the n side of Chico Creek beneath the power lines. 91 Comment
  POM146159  Plantago lanceolata E. E. Stanford 1927-5-21 386 Butte 4 miles SE of Avery 1220 Comment
  CHSC116306  Plantago major Lowell Ahart 2015-11-18 20663 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  JEPS118034  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
  RSA30397  Platanus racemosa A. A. Heller 1914-3-12 11192 Butte Canyon of Big Chico Creek E of Chico. 69 Comment
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Feb 17 2016
  CHSC32588  Plectritis ciliosa subsp. insignis J. D. Jokerst; Jeri Donovan 1981-3-21 1260 Butte Ca. 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico in Bidwell Park). Comment
  CAS-BOT-BC244401  Poa annua Lowell Ahart 1983-3-28 3908 Butte About 0.5 mile SW of Forbestown Res., along the road, about 4 miles NE of Forbestown 450 Comment
  CHSC9340  Poa annua B. Anthony 1968-4-1 403 Butte Lawn at Vets Village, Chico State College. Comment
  CHSC113965  Poa bolanderi Lowell Ahart 2014-7-10 19628 Butte Meadow like area, about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET11688462  Poa bolanderi Unknown 1985-1 5147 Butte along Willow Creek, near Section Corner of Sections 17, 16, 20, & 21, ca 4 mi E of Cherry Hill 1829 Comment
  SEINET10822494  Poa bulbosa Lowell Ahart 1986-4-4 Ahart 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, bout 12 miles south of Oroville. Abundant. Foothill Woodland. 220 ft. "Bulbous Bluegrass." 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
  CHSC39393  Poa compressa L. Ahart 1983-9-17 4438 Butte Ca. 1/4 mi se of Stirling City. Bottom of a wash. 1100 Comment
  JEPS116022  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CAS-BOT-BC255974  Poa pratensis Lowell Ahart 1987-5-6 5560 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC38847  Poa pratensis subsp. pratensis Vernon Oswald 1983-5-11 469 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek between the e end of the Golf Course and Alligator Hole. 91 Comment
  UC600761  Poa pratensis subsp. pratensis H. F. Copeland 1929-6-10 1205 Butte Jonesville Comment
  CHSC28857  Poa secunda subsp. secunda J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 459 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC29025  Poa secunda subsp. secunda J. D. Jokerst 1980-3-20 482 Butte E of Chico, 0.3 mi E of El Monte Ave, between Hwy 32 and Humboldt Rd. Comment
  CHSC30517  Poa secunda subsp. secunda N. E. H. Prouty 1980-4-5 106 .2 Butte Field east side of Cohasset Rd., ca. 1/2 mi. north of the Chico Airport turnoff. 86 Comment
  CHSC85416  Poa secunda subsp. secunda John Dittes 1992-5-5 466 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
  RSA0108924  Poa sierrae Lawrence P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +/- overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  SD106157  Pogogyne douglasii subsp. douglasii W. L. Jepson 1932-5-9 16367 Butte East of Cana Comment
  CHSC7065  Pogogyne zizyphoroides L. Kimbley 1969-5-4 5 Butte Ca. 300 yds. ne of Chico Airport, 4 mi n of Chico. Comment
  HSC87297  Pogogyne zizyphoroides Patricia Haberkern 1974-4-21 27 Butte Off Skyway, .2 mi. E of intersection with Notre Dame Blvd., E of Chico 61 Comment
  RSA0022164  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Roads intersection, 1 mile NW Hwy. 70. 61 Comment
  SEINET10968992  Pogogyne zizyphoroides Mary Susan Taylor 1975-4-29 Taylor 538 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  CHSC44418  Polygala cornuta Lowell Ahart 1988-6-15 6042 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC64124  Polygala cornuta B. Castro 1987-9-12 220 Butte Ca 50 ft up from N edge of Butte Ck ca 0.4 mi S of the Ponderosa Way bridge, ca 0.3 mi S on the Butte Creek Trail. 609 Comment
  NY406770  Polygala cornuta A. A. Heller 1914-7-24 11624 Butte Forest Ranch 731.5 Comment
  CAS-BOT-BC167549  Polygala cornuta var. cornuta Lowell Ahart 1989-5-31 6334 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  SEINET10537769  Polygonum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5153 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CAS-BOT-BC109133  Polygonum bidwelliae Mary E. Wall 1942-6-26 s.n. Butte Paradise Valley. Comment
  CAS-BOT-BC109141  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road. 609 Comment
  CHSC74694  Polygonum bidwelliae B. Castro 1998-6-13 790 E Butte Ca 5.5 air mi SE of Town of Paradise, directly opposite County Landfill, at edge of N side of unnamed canyon just S of Neal Road, under transmission lines. 128 Comment
  LA207131  Polygonum bidwelliae A. A. Heller; 1927-5-18 14391 Butte volcanic outcrops along Neale grade on road from Chico to Paradise Comment
  UC186377  Polygonum californicum Dr. C. C. Parry Oct. 1881 Butte Chico Comment
  SEINET10479639  Polygonum convolvulus Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4269 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  UCD100208  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  CAS-BOT-BC414420  Polygonum douglasii Lowell Ahart 1988-9-4 6182 Butte On the bank of Big Kimshew Creek. About 1 air mile north-east of Jones Meadow 1920 Comment
  UC1594717  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte e intersection about 1/2 mile north of Flea Valley (about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  CHSC98663  Polygonum douglasii subsp. majus B. Castro; L. P. Janeway 2005-8-2 1509 Butte Ca. 1.5 mi E of Magalia, 0.5 mi E of Sawmill Peak, on NNW-facing slope of ridge ca 0.2 mi W of Ponderosa Way in upper end of NW-trending drainage. 932 Comment
  SEINET10479646  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6715 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC46203  Polygonum minimum L. P. Janeway 1986-9-1 1825 Butte North side of Philbrook Reservoir at main PG and E campground. Open gravelly patch. 1691 Comment
  CAS-BOT-BC419808  Polygonum parryi M. S. Taylor; R. S. Schlising 1980-7-6 3066 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  CHSC39127  Polygonum parryi R. A. Schlising 1980-5-31 3606 Butte S of the village of Cohasset; along fire trail above Cohasset Highway; in open, muddy areas. Comment
  CHSC105684  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 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
  CDA13840  Polygonum punctatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13568 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  RSA724947  Polygonum punctatum L. Ahart 2006-10-8 13428 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CAS-BOT-BC420994  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville 1550 Comment
  CAS-BOT-BC71869  Polypodium californicum J. D. Jokerst; M. S. Taylor 1980-2-14 0439 Butte adjacent to MacCabes Cr, ca. 200 meters east of jct McCabes Cr and Lumpkin Rd. Comment
  CHSC39614  Polypodium calirhiza Lowell Ahart 1983-3-28 3911 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  JEPS110221  Polypodium calirhiza Lowell Ahart 2006-9-28 13360 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 480 Comment
  CAS-BOT-BC76829  Polypodium glycyrrhiza James D. Jokerst; M. S. Taylor 1980-11-14 0440 Butte Slopes adjacent to McCabe Cr. ca. 200 m. E of its jct with Lumpkin Rd. Comment
  SEINET10530418  Polypodium glycyrrhiza Mary Susan Taylor 1976-3-6 Taylor 1014 A Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC108141  Polypogon interruptus Lowell Ahart 2011-10-29 17726 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  RSA0118753  Polypogon interruptus Lowell A. Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  CAS-BOT-BC233206  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Near Butte Creek between Durham and Nelson Comment
  CHSC27562  Polypogon maritimus Robert Schlising 1978-5-17 3264 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc road. 670 Comment
  JEPS88273  Polypogon maritimus Vernon H. Oswald and Lowell Ahart 1996-5-27 7662 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & the Sacramento R. Sacramento R. Nat'l Wildlife Refuge (s. side of levee rd. at s.w. corner of Tract 3.4, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  CHSC45217  Polypogon monspeliensis Lowell Ahart 1977-6-2 1399 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC237454  Polypogon viridis Lowell Ahart 1987-5-27 5700 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC104857  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico. 197 Comment
  SEINET10530114  Polystichum imbricans Mary Susan Taylor 1981-4-14 Taylor 3530 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  CHSC86424  Polystichum imbricans subsp. imbricans R. D. Fischer; Paul Maslin 2004-2-7 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609952E 4408993N. 380 Comment
  CAS-BOT-BC72295  Polystichum imbricans subsp. imbricans Lowell Ahart 1984-5-28 4648 Butte below a dirt road about 1 1/4 miles northeast of the West Branch Bridge, about 2 miles south of Old Yankee Hill 450 Comment
  CAS-BOT-BC76651  Polystichum munitum Javier Penalosa 1962-6-18 2446 Butte Near confluence of French and Peavine Creeks. 609 Comment
  UC474222  Polystichum scopulinum H. F. Copeland 1920-8-24 423 Butte near the Summit Jonesville 2200 Comment
  CHSC35698  Populus fremontii J. D. Jokerst 1982-5-1 1554 Butte Ca. 200 met E. Phantom Falls at the N Fork of Coal Cr. Canyon. 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
  CHSC43802  Potamogeton gramineus Vernon Oswald; Lowell Ahart 1987-7-1 3076 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. In the north lake. 1935 Comment
  CHSC46588  Potentilla drummondii V. Oswald; L. Ahart 1989-7-12 3855 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC1573  Potentilla glandulosa G. Herrington 1930-4-11 Butte Centerville road. 182 Comment
  CHSC25362  Potentilla glandulosa Marc P. Hayes 1977-4-22 4 Butte Ca. .8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 495 Comment
  SEINET11906804  Potentilla glandulosa var. nevadensis L. S. Rose 1939-1 39234 Butte Strawbery Valley, 1219 Comment
  CHSC1066  Proboscidea louisianica E. Walker 1932-9-1 Butte Oroville-Marysville road. Comment
  SEINET10532862  Proboscidea louisianica subsp. louisianica Mary Susan Taylor 1978-9-8 Taylor 1902 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC52061  Prunella vulgaris var. lanceolata B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 284 Butte By side of road on sw-facing slope above Coon Hollow. 1859 Comment
  CHSC109092  Prunus Lowell Ahart 2012-4-20 17901 Butte On the south side of Guardian Trail, about 40 yards southwest of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 361 Comment
  CDA38804  Prunus dulcis L. P. Janeway 2012-3-6 10792 Butte Sacramento Valley; Southern edge of Chico; fence-line along west side of Hwy 99 just south of Estates Drive. Comment
  CHSC6045  Prunus persica M. MacArthur 1968-6-19 229 Butte Ca. 10 ft. SE of Big Chico Creek near PSA bridge, Chico State College. 60 Comment
  CHSC58676  Pseudobahia heermannii M. Bailey 1991-4-23 728 Butte Ca 750 feet south of the Covered Bridge which is ca 8 mi ne of Chico on Humbug Road. Comment
  CHSC37501  Pseudognaphalium beneolens J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1686 Butte Table Mountain. At the north edge of the mesa. Top of North Table Mt. Comment
  CHSC116122  Pseudognaphalium luteoalbum Lowell Ahart 2015-11-7 20629 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
  JEPS98581  Pseudognaphalium stramineum Lowell Ahart 2000-5-13 8346 Butte 5 air miles SW of Oroville Oroville 42 Comment
  CHSC28612  Pseudognaphalium thermale M. S. Taylor 1979-8-4 2176 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC45003  Pseudognaphalium thermale Lowell Ahart 1988-9-4 6176 Butte Along the edge of the dirt road, a little north of a branch of Last Chance Creek, about 1 mile west and a little north of Bald Mountain. 1005 Comment
  CHSC52384  Pseudognaphalium thermale R. L. Ondricek-Fallscheer 1982-10-30 161 Butte At edge of road, sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 134 Comment
  UC896905  Pseudognaphalium thermale A. A. Heller 1916-9-23 12659 Butte near Forest Ranch (Sierra foothills); Sierra Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  CHSC3905  Pseudotsuga menziesii var. menziesii R. Carter 1966-12-31 500 Butte Found ca. 17 mi. NE Oroville on W side Big Bald Rock along E side Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC28649  Pteridium aquilinum var. pubescens M. S. Taylor 1979-3-20 1945 Butte On n side of Hwy 70 following Feather River, begins at s side of bridge over n fork of Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC2448  Pterospora andromedea R. Carter 1965-7-6 274 Butte Found along E side of Oroville-Quincy Rd., 5.2 mi. N of Mountain House, ca. 15' from road in open woods. 1219 Comment
  SEINET10479894  Pterostegia drymarioides R. M. Austin Austin 16 Butte Rocks. Butte Canyon. Comment
  POM196026  Pteryxia terebinthina var. californica E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  CHSC86536  Pycnanthemum californicum L. P. Janeway; John Hunt 2003-7-1 7863 Butte Northern High Sierra Nevada. Along west edge of Middle Fork Feather River arm of Lake Oroville, 1.2 km west-southwest of mouth of Frey Creek. 283 Comment
  CHSC72888  Pyracantha coccinea Vernon H. Oswald 1998-11-4 9690 Butte Butte Meadows Campground. Between northeastern-most campsite and Butte Creek. 1325 Comment
  CHSC48678  Pyrola dentata Vernon Oswald 1983-7-26 916 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 Comment
  CAS-BOT-BC462606  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1700 Comment
  CHSC109613  Pyrus communis Lowell Ahart 2012-5-17 18079 Butte On the west side of the horse trail, southeast of the southwest corner of the old walnut orchad, about 3/5 miles west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC94696  Quercus X howellii John Thomas Howell 1955-6-15 30495 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UC1135411  Quercus chrysolepis J. E. Sowder 1933-8-4 122 Butte slope above de Sable Power House; Chico Quad. 609 Comment
  SEINET13953242 Image available Quercus chrysolepis A. A. Heller 1918-1 Butte Honey Run grade on a north slope in the digger pine and oak belt Comment
  CHSC101332  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  POM106172  Quercus douglasii C. C. Bruce 1897-05 1797 Butte Little Chico. Comment
  JEPS38009  Quercus dumosa A. E. Wieslander 1927-6-29 Butte near Fourteen-mile House (Humboldt road from Chico) Comment
  SEINET10477878  Quercus durata Lowell Ahart 1985-6-30 Ahart 5093 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC40345  Quercus durata var. durata Lowell Ahart 1985-6-30 5093 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  CAS-BOT-BC105141  Quercus kelloggii Lowell Ahart 1980-9-10 2625 Butte Little Bald Rock 1100 Comment
  JEPS113214  Quercus lobata Lowell Ahart 2007-3-28 13601 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 51 Comment
  CAS-BOT-BC104491  Quercus vacciniifolia E. B. Copeland 1930-6-10 626 Butte Jonesville 1500 Comment
  CHSC26694  Quercus vacciniifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1470 Butte On s side of Humboldt Rd, ca. 3 mi e of its jct with Scott's John Rd, n of Jonesville. 1828 Comment
  CHSC50420  Ranunculus alismifolius var. alismellus Vernon Oswald 1990-6-14 4296 Butte Jones Meadow-Lotts Lake Rd (T-Line), ca. 2 miles southwest of Lotts Lake, at the meadow near the headwaters of Kimshew Creek. 1898 Comment
  CHSC52776  Ranunculus aquatilis var. hispidulus B. Castro 1982-4-14 16 Butte In stream atop s end of North Table Mtn, off Cherokee Rd ca. 4 mi n of Oroville. 152 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  UC1561858  Ranunculus bonariensis var. trisepalus Barbara Ertter with Lowell Ahart 1986-4-13 5901 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  SEINET10535963  Ranunculus californicus Mary Susan Taylor 1973-1 Taylor 47 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  CHSC1478  Ranunculus canus R. M. Staley 1952-7-5 Butte Paradise. 548 Comment
  CHSC3513  Ranunculus canus M. Gregg 1966-2-28 24 Butte In Upper Bidwell park--East of Salmon Hole. Across road. Comment
  CHSC52790  Ranunculus canus Vernon Oswald 1983-2-14 74 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. near Parking Area P (0.6 mi e of Salmon Hole). 219 Comment
  CHSC33969  Ranunculus flammula M. S. Taylor; L. Ahart 1981-8-15 4188 Butte N end of Snag Lake; e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  SEINET10833574  Ranunculus flammula var. filiformis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4188 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC118056  Ranunculus muricatus Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 228 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC20518  Ranunculus muricatus M. S. Taylor 1975-4-26 532 Butte In meadow ca. 1/4 mi ne of Kunkle Reservoir, ca. 1 mi s of Paradise. 609 Comment
  CHSC31383  Ranunculus muricatus J. D. Jokerst 1979-4-20 1205 Butte Along the banks of a creek. Top of North Table Mt., ca. 200 met. N of Cherokee Rd. at the E edge of the mountain. 403 Comment
  CHSC23448  Ranunculus occidentalis var. occidentalis T. Manolis 1974-4-21 21 Butte Along Butte Creek, 3 mi e of Chico. Comment
  CHSC46849  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1982-4-8 107 Butte Near Oroville Dam. Comment
  CHSC110258  Ranunculus occidentalis var. ultramontanus L. P. Janeway 2012-6-2 10839 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC41517  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-5 325 Butte Ca. 1.0 mi sw of Jonesville on Humboldt Rd. at Colby Creek. Near stream in meadow. 1487 Comment
  SBBG27175  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 Butte Jonesville 1550 Comment
  RSA268750  Ranunculus occidentalis var. ultramontanus Lyman Benson 1932-7-28 3968 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  RSA0111937  Ranunculus pusillus Lowell A. Ahart 2015-5-5 20139 Butte 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. 43 Comment
  CHSC10657  Raphanus raphanistrum Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CAS-BOT-BC74262  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  SEINET10493588  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-6-19 Taylor 3963 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  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
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  JEPS88909  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  JEPS95615  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3 1/2 mi SW of Forbestown (S of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC101123  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 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
  JEPS48071  Rhamnus tomentella subsp. tomentella Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2689 Butte w side Pulga Bridge (at Pulga Bridge); North Fork of Feather River Comment
  POM86215  Rhamnus tomentella subsp. tomentella C. C. Bruce 1897-06 1808 Butte Little Chico. Comment
  RSA301134  Rhamnus tomentella subsp. tomentella D. C. Michener 1982-7-28 4137 Butte Foothill woodland on volcanic soils on both sides of 32, 8.3 miles NE of jct with 99 near Chico. Comment
  RSA518945  Rhamnus tomentella subsp. tomentella J. T. Howell 1975-6-15 51073 Butte Butte Creek near Chico 6 Comment
  CDA14157  Rhododendron occidentale G. F. Hrusa 1997-6-27 13912 Butte Sierra Nevada; Banks of Fall River (not Shasta Co. Fall R.) at old Fall River Campground on USFS 24N94. Comment
  SFV10916  Rhododendron occidentale M. L. Vincent 1968-6-7 802 Butte 3 miles north of Magalea on Contolenc Road. Comment
  UC105989  Rhododendron occidentale Mrs. R. M. Austin June, 1896 138 Butte California Comment
  CAS-BOT-BC168126  Rhus aromatica Mrs. C. C. Bruce 1897-1-1 1819 Butte Chico Comment
  CAS-BOT-BC200684  Rhus aromatica Lewis S. Rose 1945-5-12 45026 Butte Richardson Springs 304 Comment
  POM86098  Rhus trilobata var. pilosissima C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  CHSC78318  Rhynchospora capitellata Lowell Ahart 2000-6-27 8532 Butte 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
  UCR190824  Ribes Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SFV1603  Ribes bracteosum M. L. Vincent 1962-4-15 184 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  SEINET5569898  Ribes californicum H. S. Gentry, S. Koch 1962-1 19763 Butte Cohasset. 914 Comment
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Jul 22 2018
  SEINET177607 Image available Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CHSC1658  Ribes inerme var. klamathense T. Morgue 1932-5-3 Butte Concow Reservoir. 579 Comment
  UC725919  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte at foot of the grade leading down from Stirling City Comment
  CDA25570  Ribes roezlii T. C. Fuller 1962-7-12 9165 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC3299  Ribes roezlii M. L. Hillier 1966-4-23 Butte Off rt. side of state route 32, approx. 9 miles e. of Forest Ranch. Comment
  CHSC3607  Ribes roezlii Gerry Carrauthers 1966-3-5 28 Butte E. of Chico along highway 32 toward Susanville ca. 12 mi. Comment
  LA205499  Ribes roezlii A. A. Heller; 1915-6-11 11970 Butte Sierra Nevada, Chico Meadows 1219 Comment
  CAS-BOT-BC340983  Robinia pseudoacacia Virginia Hagaman 1966-4-27 148 Butte By bridge on Chico State college campus Comment
  CDA25116  Rorippa curvisiliqua var. occidentalis L. Ahart 2002-10-17 9988 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC90958  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2005-4-18 11741 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
  CHSC94178  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field. 31 Comment
  CHSC51254  Rorippa curvisiliqua var. orientalis Lowell Ahart 1990-10-21 6641 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  CHSC10759  Rorippa nasturtium-aquaticum Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115603  Rorippa nasturtium-aquaticum Lowell Ahart 2009-5-23 15728 Butte Opening in a drainage, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC42947  Rorippa palustris var. fernaldiana Lowell Ahart 1987-7-3 5779 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC1592  Rosa californica R. M. Staley 1952-7-2 Butte Honey Run. 182 Comment
  CHSC66083  Rosa californica Vernon H. Oswald 1996-5-22 7628 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Between the farm road and the slough at the SE corner of the Riparian Sanctuary. 28 Comment
  CDA3959  Rosa eglanteria L. Ahart 2002-6-2 9677 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  CAS-BOT-BC148125  Rosa gymnocarpa Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  JEPS117312  Rosa multiflora 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico 74 Comment
  CHSC29764  Rosa pisocarpa subsp. ahartii M. S. Taylor 1980-5-24 2747 Butte Peter Ahart Ranch, along Rocky Honcut Creek, Honcut. 50 Comment
  CHSC50561  Rosa pisocarpa subsp. pisocarpa Vernon Oswald; Lowell Ahart 1990-7-5 4346 Butte Camping area along Butte Creek on F-Line, 0.4 mi southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. On the bank of the creek. 1316 Comment
  CHSC55060  Rotala indica Lowell Ahart 1991-10-25 6731 Butte Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CHSC112600  Rotala ramosior Lowell Ahart 2013-9-20 19059 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC38545  Rotala ramosior Vernon Oswald 1983-7-8 836 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  CHSC43233  Rotala ramosior Lowell Ahart 1987-9-4 5879 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 mile seast of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CAS-BOT-BC147095  Rubus John Thomas Howell 1959-9-20 34684 Butte Eastern outskirts of Oroville 60 Comment
  CHSC111371  Rubus armeniacus Lowell Ahart 2012-5-14 18055 Butte On dry deep soil, just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. 74 Comment
  CHSC27260  Rubus armeniacus P. Moyer 1971-11-7 66 Butte CSUC campus. N bank of Chico Ck. behind cafe annex. 60 Comment
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 Comment
  SEINET10483576  Rubus laciniatus Mary Susan Taylor 1980-4-27 Taylor 2556 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC147199  Rubus parviflorus Clarence R. Quick 1952-7-1 52 -124 Butte Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  CHSC28560  Rumex acetosella M. S. Taylor; J. T. Howell 1978-7-21 1806 Butte On s side of Oroville-Quincy Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CHSC42496  Rumex acetosella Lowell Ahart 1987-6-9 5742 Butte Around rocks, on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC204581  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Chico Meadows Sierra Nevada 1219 Comment
  CAS-BOT-BC421620  Rumex crispus Lowell Ahart 1981-5-16 2810 Butte Gray Lodge, 11 miles southwest of Gridley. Duck ponds on Gray Lodge Waterfowl Management Area. 35 Comment
  CHSC97332  Rumex obtusifolius L. P. Janeway 2007-7-30 9146 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1116 Comment
  CHSC28002  Rumex obtusifolius subsp. agrestis M. S. Taylor 1978-7-21 1824 Butte On s side of Oroville-Quincy Hwy by creek, ca. 14 mi n of Lake Madrone. 914 Comment
  SEINET10479779  Rumex obtusifolius subsp. agrestis Mary Susan Taylor 1978-7-21 Taylor 1824 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
  JEPS113284  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 63 Comment
  CAS-BOT-BC129902  Salix bonplandiana A. A. Heller 1914-3-21 11222 Butte Hills, 8 miles north of Oroville, below the Quercus Doutlasii belt. Comment
  SD933  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville, Kirby's Meadow 1750 Comment
  UC600408  Salix boothii E. B. Copeland 1931-6-11 Butte at outlet Kirby Meadow; Jonesville 1800 Comment
  LA208601  Salix eastwoodiae E. B. Copeland; 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750.0 Comment
  CHSC80067  Salix exigua L. P. Janeway; B. Castro 1999-6-4 6452 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  POM218987  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 Comment
  CHSC108823  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte On the west side of a deep ditch, area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CDA38779  Salix lasiandra var. lasiandra L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17913 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCR237325  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18746 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CAS-BOT-BC129622  Salix lasiolepis var. lasiolepis John Thomas Howell 1961-9-22 36776 Butte West Branch of North Fork Feather River near Jarbo Gap - Sierra Nevada Comment
  CHSC9695  Salix lasiolepis var. lasiolepis E. L. Smith 1971-9-12 1067 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CHSC65016  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1987-7-1 3074 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CHSC42543  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5683 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  SEINET12318333  Sambucus caerulea K. D. Johnson 1978-1 8 Butte 5mi S of Pine Creek, 7 mi WNW of Chico 40 Comment
  CHSC46832  Sambucus mexicana R. A. Schlising 1987-7-19 4535 Butte Coon Hollow. Comment
  CAS-BOT-BC238618  Sambucus nigra subsp. caerulea A. A. Heller 1914-4-27 11326 Butte Hills 8 miles north of Oroville Comment
  CHSC50544  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1990-6-20 4309 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1965 Comment
  UC1562489  Sambucus racemosa var. microbotrys Vernon Oswald and Lowell Ahart 1990-6-20 4309 Butte s side of creek ca 0.5 mi w Butte-Plumas County line (between Philbrook Reservoir and Carr Mine); Philbrook Creek 1965 Comment
  CHSC31896  Sanicula bipinnata L. Ahart 1974-3-18 325 Butte Along North Honcut Creek; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65442  Sanicula bipinnatifida var. flava L. P. Janeway 1995-6-19 4798 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CHSC38748  Sanicula tuberosa Vernon Oswald 1983-4-4 258 Butte Upper Bidwell Park, Chico, on the north rim ca. 50 ft e of the turn-around at the end of the North Rim Trail. 414 Comment
  CHSC79646  Sanicula tuberosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13749 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  UC726266  Saxifraga californica A. A. Heller 1940-3-8 15507 Butte just above Spring House on the Neal Road to Paradise Comment
  RSA325945  Saxifraga oregana L. V. Ritter 1969-5-20 326 Butte 0.8 mi. e of Butte Meadows e side of Butte Meadow Rd. Comment
  CHSC100982  Scandix pecten-veneris L. P. Janeway 2008-4-2 9242 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 Comment
  POM304447A  Scandix pecten-veneris Barbara Ertter, Jeffrey L. Strachan, L. Ahart 1980-5-6 3280 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville 30 Comment
  CAS-BOT-BC111651  Schoenoplectus mucronatus Lowell Ahart 1976-9-18 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC56805  Scirpus congdonii L. P. Janeway 1988-7-2 2973 Butte Southerly slope of Big Bar Mountain; along road 5.5 mi southwest of Coyote Gap. 1188 Comment
  CAS-BOT-BC22402  Scirpus congdonii L. P. Janeway; Robert A. Schlising 1988-7-22 3073 Butte Canyon of Philbrook Creek; seep just above the High Lakes Road 3.r mi west of the pass, Jonesville quad (15') 1905 Comment
  CDA39131  Scirpus fluviatilis Keith Rathbone 1953-6-19 s.n. Butte Richvale. 0 Comment
  CHSC101661  Scribneria bolanderi Lowell Ahart 2009-4-26 15632 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 Ten Mile House Road, just northeast of Guardians Trail 381 Comment
  SEINET10836220  Scribneria bolanderi Lowell Ahart 1985-5-10 Ahart 4959 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  SBBG16847  Scrophularia californica M. Vincent 1962-4-17 199 Butte Pentz Rd at Nelson Bar turnoff, 5 mi S of Paradise Comment
  JEPS104427  Scrophularia californica subsp. floribunda Lowell Ahart 2003-4-10 10087 Butte Under the government pole line, below the south rim of South Table Mountain, ca 1 3/4 mi n of Oroville. 211 Comment
  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
  CHSC63645  Scutellaria siphocampyloides B. Castro; L. Hanson, R. Zebell 1989-5-30 313 Butte Ca 2 air mi SSW of the Ponderosa Reservoir on Lake Oroville, on Ponderosa Way (USFS Rd 20N24) ca 0.3 mi N of its jcn with Lower Forbestown Rd. 768 Comment
  SBBG71224  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Crk, E of Chico Comment
  RSA126002  Sedella pumila E. K. Balls 1957-5-23 22530 Butte 3.8 miles NE of Pentz on road from Paradise. 457 Comment
  SEINET8472473  Sedella pumila M. J. Williams 1967-4-22 s.n. Butte Table Mtn., 5 miles from Cherokee. 396 Comment
  CHSC24945  Sedum spathulifolium M. L. McCrum 1976-4-27 20 Butte Pop. ca. 6.5 mi e of Chico, .1 mi w of Covered Bridge, along creek. 112 Comment
  CHSC4666  Sedum spathulifolium R. Carter 1966-4-11 332 Butte Found Ca. 1 mi. E of Bidwell Bar along R.R. tracks, just W of R.R. bridge over S Fork. 152 Comment
  RSA0081477  Sedum spathulifolium J. R. Shevock 1972-5-19 1784 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  CHSC32648  Selaginella hansenii M. S. Taylor 1981-3-18 3419 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC109128  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On a bank, on the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC44624  Selaginella wallacei Vernon Oswald 1984-4-9 1140 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  UC1184119  Senecio aronicoides E. B. Copeland 1929-7-14 Butte Jonesville 1600 Comment
  CHSC86445  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 97 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  RSA32802  Senecio eurycephalus var. lewisrosei A. A. Heller 1938-5-28 s.n. Butte Feather River Hwy, 23 miles from Oroville Comment
  RSA712950  Senecio eurycephalus var. lewisrosei L. Ahart 2006-5-10 12616 Butte Bardees Bar Road, about 100 yards north of poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of pulga. 355 Comment
  CHSC104757  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC45769  Senecio triangularis Vernon Oswald 1983-6-22 740 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. Beside Chico Creek. 1112 Comment
  CDA8687  Senecio triangularis T. C. Fuller 1962-7-12 9168 Butte 2 miles east of Butte Meadows. 0 Comment
  RSA4450  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. 1550 Comment
  CHSC44901  Senecio vulgaris Lowell Ahart; Vern Oswald 1988-7-10 6124 Butte In the yard of Glenn and Ruth Cunningham, 660 Paseo Campaneros, Chico. 60 Comment
  CHSC45226  Sequoiadendron giganteum Lowell Ahart 1961-12-11 1 Butte On the Chico State College campus, Chico. 60 Comment
  CAS-BOT-BC243563  Setaria parviflora M. S. Taylor 1977-11-10 1509 Butte Irrigation ditch on S side of Crauch Road, ca. 300 ft. W of its jct. with Lone Pine Ave. ca. 4 mi S of Chico 30 Comment
  CHSC114685  Setaria parviflora G. F. Hrusa; S. Dubiel 2012-9-9 18505 Butte Sierra Nevada. Banks of Feather River, 2 miles downstrream from Thermalito afterbay. 30 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
  CAS-BOT-BC240190  Setaria viridis John Thomas Howell 1975-6-15 51062 Butte Chico 60 Comment
  CHSC101258  Sherardia arvensis Lowell Ahart 2009-4-17 15547 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  JEPS104193  Sibara virginica Lowell Ahart 2003-5-9 10123 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  CHSC34955  Sidalcea asprella J. D. Jokerst; R. A. Schlising 1979-5-18 3408 Butte North of Oroville and Table Mt., 1.75 miles S of Cherokee Historical Site on Cherokee Road. Comment
  CHSC37439  Sidalcea asprella R. A. Schlising; J. D. Jokerst 1982-6-4 4286 Butte N of Oroville and n of Jarbo Gap along Hwy 70. Comment
  CHSC48610  Sidalcea asprella Vernon H. Oswald 1985-4-29 1726 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. Comment
  UC176926  Sidalcea calycosa A. A. Heller 1912-5-23 10751 Butte Table Mountain Olive Ranch n Oroville; n of Oroville, Table Mountain Comment
  SEINET11992378  Sidalcea calycosa M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5404 Butte ca 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise Comment
  POM180917  Sidalcea diploscypha H. F. Copeland 1923-5-7 887 Butte Near Nelson Comment
  CHSC91992  Sidalcea gigantea L. P. Janeway 2005-9-4 8534 Butte Northern High Sierra Nevada. Along Road 24N13 crossing an uppermost small branch of Lockerman Creek; 0.6 km south-southwest of Logue Meadows. 1337 Comment
  CHSC33519  Sidalcea glaucescens R. A. Schlising; R. Preston, R. Banchero 1981-7-14 4145 Butte NE Butte County, 0.3 mi SW of Humbug Summit. 1981 Comment
  CHSC103746  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  UC398675  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte along Little Chico Creek (in the gravelly bed of Little Chico Creek); along Little Chico Creek Comment
  CAS-BOT-BC213190  Sidalcea robusta A. A. Heller; H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek Comment
  CHSC25537  Sidalcea robusta Robert A. Schlising 1976-5-8 3177 Butte Bidwell Park, Chico; Upper Park above Golf Course. Comment
  POM84694  Sidalcea robusta C. C. Bruce 1898-05 2390 Butte Forest Ranch Comment
  UC128807  Silene bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS110241  Silene gallica Lowell Ahart 2006-5-8 12592 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 336 Comment
  JEPS115630  Silene gallica Lowell Ahart 2009-5-15 15690 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
  SEINET10537534  Silene gallica Mary Susan Taylor 1977-6-25 Taylor 1389 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC2447  Silene laciniata subsp. californica R. Carter 1965-7-6 277 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd., on E bank above road. 914 Comment
  CHSC65098  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  UC600621  Silene occidentalis subsp. longistipitata H. F. Copeland 1930-7-20 Butte Jonesville 1524 Comment
  CHSC6138  Silybum marianum J. Wheeler 1968-5-17 369 Butte S side of e approach to Sacramento River Bridge on hwy. 32. Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC46234  Sisyrinchium bellum Pauleen Broyles 1987-7-5 1072 Butte Ca 7 km n. of Inskip on Bull Hill Rd., along Coon Creek. Comment
  UC426901  Sisyrinchium bellum E. B. Copeland 1930-8-3 Butte Jonesville 1500 Comment
  UC600565  Sisyrinchium bellum H. F. Copeland 1930-7-24 Butte Jonesville Comment
  RSA21307  Sisyrinchium bellum Carl B. Wolf 1937-5-13 8652 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SEINET10971622  Sisyrinchium bellum Lowell Ahart 1983-8-16 Ahart 4313 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  CHSC116027  Solanum americanum Lowell Ahart 2015-10-20 20562 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
  CHSC1933  Solanum elaeagnifolium V. Holt 1931-6-1 Butte Paradise. 548 Comment
  CHSC36958  Solanum parishii 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
  SEINET10546687  Solanum parishii Mary Susan Taylor 1981-5-22 Taylor 3797 Butte T23N R5E nw/se sec 30, Pulga quad. Around large landing on saddle of ridge running SE from Flea Mt, above Pulga, ca. 5 air mi E of Magalia. 3600 ft. 1097 Comment
  CHSC62626  Solanum rostratum Patrick E. Kelly 1994-2-10 Butte N side of Doe Mill Rd. just E of Butte Creek Diversion in S Chico. 83 Comment
  CHSC30665  Solidago canadensis subsp. elongata M. S. Taylor; R. Schlising 1980-7-6 3072 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 Comment
  SEINET10872003  Solidago canadensis subsp. elongata Mary Susan Taylor 1980-9-12 Taylor 3330 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  SBBG27341  Solidago elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CAS-BOT-BC364939  Solidago velutina subsp. californica Lowell Ahart 1980-7-20 2467 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  JEPS117269  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC107249  Sonchus oleraceus Lowell Ahart 2011-6-3 17360 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  JEPS117702  Sonchus oleraceus Lowell Ahart 2010-5-14 16671 Butte On the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 260 Comment
  POM181473  Sonchus oleraceus H. F. Copeland 863 Butte Nelson. Comment
  CHSC66157  Sonchus tenerrimus Vernon H. Oswald; Lowell Ahart 1996-5-27 7670 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  SEINET10474015  Sonchus tenerrimus Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5150 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CAS-BOT-BC157206  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte West of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  UC726090  Sorbus californica A. A. Heller 1928-7-25 14706 Butte Butte Creek House Jonesville Comment
  CHSC41913  Sorbus scopulina Lowell Ahart 1983-8-16 4300 Butte Near a stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  SACT002287  Sorghum halepense Herbert Copeland 1923-8-14 Butte In mud. Comment
  SEINET10507640  Sorghum halepense Mary Susan Taylor 1979-9-28 Taylor 2203 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  SEINET11787803  Sparganium emersum L. P. Janeway 1987-1 2248 Butte Mdw on Pinkard Cr between Lewis Ridge & Moorville Ridge, 6.5 mi from Challenge-LaPorte Rd & Travis 1082 Comment
  CHSC115416  Spartium junceum Kate Ronan 2013-4-9 Butte Centerville flumes trail. 368 Comment
  CHSC38522  Spartium junceum Vernon Oswald 1983-5-4 424 Butte Upper Bidwell Park, Chico, 100 ft w of the parking lot at Day Camp. 91 Comment
  RSA755768  Spartium junceum L. Ahart 2009-5-23 15743 Butte East side of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  SEINET10537495  Spergula arvensis Lowell Ahart 1985-5-31 Ahart 5031 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC114168  Spergularia bocconi Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16792 A Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  JEPS120962  Spergularia bocconi Lowell Ahart 2013-4-20 18563 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  SEINET10537508  Spergularia rubra Mary Susan Taylor 1979-8-4 Taylor 2182 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
  RSA0036991  Spiraea douglasii Lowell A. Ahart 2013-7-1 18813 Butte 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
  CHSC28004  Spiranthes porrifolia M. S. Taylor 1978-7-21 1826 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 914 Comment
  JEPS98321  Spiranthes porrifolia Lowell Ahart 2000-6-6 8453 Butte 5 air miles E of Oroville Dam (old gold mining pit SE of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  JEPS108131  Sporobolus creber Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville 34 Comment
  CDA13320  Stachys ajugoides G. F. Hrusa, T. D. Wilfred 1996-7-9 13166 Butte Sierra Nevada; approx. 0.4 m. E of bridge over Marble Creek on USFS N60. Comment
  CHSC87566  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  CHSC42788  Stachys pycnantha L. P. Janeway; Patty Costello 1987-9-5 2575 Butte NW side of Big Chico Cr below the rd to Soda Springs campground near hwy 32. 1127 Comment
  CHSC51267  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte Growing along the sides of the East Fork of Canyon Creek, below high water line of Lake Oroville, about 1/4 mile northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  SEINET10499273  Stachys pycnantha Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4233 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SEINET10836994  Stachys pycnantha Mary Susan Taylor Taylor 319 Butte 61 Comment
  CHSC113251  Stebbinsoseris heterocarpa Lowell Ahart 2014-4-20 19389 Butte Near the bottom of rim cliffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  UCD80122  Stebbinsoseris heterocarpa CNPS SN Foothill Team 2005-3-29 SNFN 0068 b Butte CDFG North Table Mountain Wildlife Area, along western border of North Table Mountain Ecological Reserve, outside of Oroville, CA. Plot is ca. 1 mile southwest of parking area, on west-southwest-facing slope approaching 'hollow' area. 362 Comment
  SEINET10537441  Stellaria Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4198 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  SD1574  Stellaria crispa E. B. Copeland 1931-7-18 Butte Jonesville 1500 Comment
  CHSC34212  Stellaria longipes var. longipes M. S. Taylor; L. Ahart 1981-8-16 4198 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  UC1609331  Stellaria longipes var. longipes Lowell Ahart 1993-7-23 7111 Butte about 6 air mi ne Feather Falls (e side of Fall River, e of campgrounds on large gravel bar along Fall River); Fall River 1036 Comment
  CHSC10641  Stellaria media Lowell Ahart 1968-3-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC114950  Stellaria nitens Lowell Ahart 2015-3-14 19952 Butte On the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 302 Comment
  SEINET10866384  Stellaria nitens Mary Susan Taylor 1981-4-5 Taylor 3501 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  JEPS87165  Stellaria obtusa Lowell Ahart 1992-7-21 6817 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  CHSC58905  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte In a meadow, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC375585  Stephanomeria lactucina A. A. Heller 1928-6-28 14659 Butte On the ridge south Butte Creek, Butte Meadows Comment
  SEINET10474963  Stephanomeria lactucina Lowell Ahart 1983-8-16 Ahart 4307 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  SD216  Stipa E. B. Copeland 1929-7-16 335 Butte Jonesville, scattered in low woods 1500 Comment
  SEINET10603864  Stipa lemmonii Lowell Ahart 1988-6-21 Ahart 6058 Butte Lemmon's Stipa. On dry red bare rocky soil, along Poe Power House Road, about 3/4 mile North of the Poe Power House, abou 11/4 miles South-east of Jarbo Gap, California. Yellow Pine Forest. Uncommon. 427 Comment
  SJSU8320  Streptanthus diversifolius J. B. Willis Jr. 1969-5-3 94 Butte near Cherokee Rd, 8 mi NE of Oroville Comment
  CHSC38025  Streptanthus drepanoides R. E. Preston 1982-4-22 254 Butte Ca. 0.6 mi ese of Kunkle Reservoir, on W. Branch Feather River arm of Lake Oroville, ca. 4.5 mi se of Paradise. 280 Comment
  CHSC93454  Streptanthus polygaloides Lowell Ahart 2006-5-10 12612 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  UC725942  Streptanthus polygaloides A. A. Heller 1938-5-28 15120 Butte steep slopes on Feather River Hwy 23 mi from Oroville Comment
  SEINET6647401  Styrax officinalis var. californicus M. J. Williams, W. Roderick 1984-5-25 84- 23 -2 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam. Comment
  CHSC49444  Styrax officinalis var. redivivus Vernon Oswald 1984-5-23 1203 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  CAS-BOT-BC48056  Styrax redivivus John Thomas Howell 1967-6-22 42643 Butte Canyon of the North fork of Feather River, 3 miles northeast of Pulga Bridge. Comment
  RSA564131  Styrax redivivus Peter Fritsch 1993-6-20 1353 Butte Hwy 70, north of Pulga, along Heinz Creek Trail above Feather River Canyon. 457 Comment
  CAS-BOT-BC234612  Symphoricarpos mollis Vernon Oswald; Lowell Ahart 1987-7-1 3055 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek 1828 Comment
  CHSC48021  Symphoricarpos mollis Vernon Oswald; Lowell Ahart 1987-7-1 3055 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
  CHSC102625  Symphyotrichum bracteolatum Lowell Ahart 2009-7-9 16026 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS119919  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC99038  Symphyotrichum cusickii Lowell Ahart 1987-7-3 5784 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of 271 Comment
  CAS-BOT-BC99040  Symphyotrichum cusickii E. B. Copeland 1930-8-26 487 Butte Jonesville 1500 Comment
  CHSC63806  Symphyotrichum spathulatum S. C. Morey 1983-8-1 662 Butte Chico Meadows. On E side of Scout Rd., ca. 1 mi N of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC105795  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2010-9-21 17226 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC66836  Symphyotrichum subulatum var. parviflorum Vernon H. Oswald 1996-8-29 8246 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 32 Comment