Search Results — 2000 specimen records retrieved (1605 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  JEPS104463  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the w side of an irrigation ditch, on the e side of Upper Palermo Rd, ca 2 mi (air) ne of Palermo. 67 Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 Comment
  UCSB62939  Acer macrophyllum Sarr, Dan 1995-7-29 Butte 5 mi of Forest Ranch on Highway 32 1000 Comment
  CHSC109650  Acer platanoides Lowell Ahart 2012-5-14 18065 Butte On the north side of the paved road, east of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  CAS-BOT-BC21749  Achillea millefolium Lowell Ahart 1983-7-29 4225 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CAS-BOT-BC210642  Achnatherum lemmonii John Thomas Howell 1962-6-16 37491 Butte Magalia 731 Comment
  CDA14054  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-1 13701 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Common, but scattered throughout in dry forest openings. Perennial, bunching. Comment
  CHSC109858  Achnatherum lemmonii var. lemmonii L. P. Janeway 2012-6-7 10869 Butte Northern High Sierra Nevada. Southwestern spur of Rocky ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  SEINET5585614 Image available Achnatherum lettermanii E. B. Copeland 1929-1 342 Butte Jonesville 1550 Comment
  CAS-BOT-BC217019  Achnatherum occidentale M. S. Taylor 1978-7-18 1707 Butte On top of Humboldt Peak at Humboldt Summmit 2158 Comment
  CAS-BOT-BC216463  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-22 11501 Butte About Chico Meadows 1219 Comment
  CHSC2193  Achnatherum occidentale subsp. californicum H. Silberman; D. Isaac 1949-5-17 Butte Big Chico Creek Canyon, 7 1/2 mi. east of Chico. 182 Comment
  CHSC94138  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1127 Comment
  CHSC35666  Achyrachaena mollis R. E. Preston 1982-4-22 256 Butte Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4 mi se of Paradise. 280 Comment
  CHSC28528  Acmispon americanus var. americanus M. S. Taylor 1979-8-4 2171 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC113917  Acmispon brachycarpus Lowell Ahart 2014-5-13 19457 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CHSC49840  Acmispon parviflorus Vernon H. Oswald 1990-4-2 4143 Butte East side of Feather River in Oroville, ca. 0.25 mi S of the Montgomery St. access. 106 Comment
  JEPS119989  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of Bloody Pin Trail, about 1/2 way between Guardian Trail and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC398914  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville 1500 Comment
  CHSC52674  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-27 359 Butte N part of county, n of Philbrook Reservoir at Coon Hollow. 1706 Comment
  CHSC48839  Adenostoma fasciculatum Vernon Oswald 1986-5-6 1994 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CHSC84627  Adiantum aleuticum Matt Quinn 2001-4-23 52 Butte Found growing along bedrock wall on south side of Honey Run Creek, approximately 3/4 mile upstream of confluence with Little Butte Creek. 243 Comment
  SEINET7728118  Adiantum emarginatum C. C. Parry 1883-1 Butte Little Chico Canyon Comment
  POM120405  Adiantum jordanii C. C. Bruce 1897-06 1863 Butte Butte Creek Comment
  JEPS107524  Aegilops cylindrica Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  CHSC49488  Aegilops triuncialis Vernon Oswald 1987-5-14 2904 Butte Hwy 32, 1.4 mi sw of Forest Ranch. 701 Comment
  CHSC98333  Aegilops triuncialis L. P. Janeway; B. Castro 2007-5-19 8978 Butte Cascade Range Foothills. Bottom of un-named drainage on southesast side of Neal Road, 2.9 air km northeast of Hwy 99, approximately under the high power lines. On the lowest terrace above the dry dreek; dry hard clay soil, Tuscan Mudflow outcrops (volcanic) above. 88 Comment
  RSA724909  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67. 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. NAD 83. 757 Comment
  UC600718  Agoseris aurantiaca var. aurantiaca H. F. Copeland 1932-7-20 Butte edge of wet meadow [across road] Jonesville Comment
  CHSC44367  Agoseris heterophylla Lowell Ahart 1988-5-30 6025 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC13174  Agoseris monticola V. Oswald; L. Ahart 1988-10-6 3707 Butte Near the headwaters of Big Kimshew Creek, ca. 1.5 air miles NE of Jones Meadow 1950 Comment
  CHSC87538  Agoseris retrorsa R. D. Fischer 2004-4-20 133 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Humboldt Trail, approx. midway. 411 Comment
  UCD146247  Agoseris retrorsa Daniel S. Park; D. Potter 2010-4-10 16 Butte Table Mt. Downhill trail across from waterfall. Growing on slope. 314 Comment
  POM32928  Agoseris retrorsa C. C. Bruce 1897-04 s.n. Butte Cherokee grade. Comment
  SEINET10968367  Agropyron Mary Susan Taylor 1980-7-6 Taylor 3071 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  SEINET10968368  Agropyron Mary Susan Taylor 1978-7-18 Taylor 1675 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  SEINET10507052  Agropyron elongatum Mary Susan Taylor 1978-9-9 Taylor 1922 Butte Along the Skyway in the village of Inskip. 1468 Comment
  SEINET10855011  Agrostis avenacea Lowell Ahart 2008-5-21 Ahart 14779 Butte T20N, R6E, southwest 1/4 Section 33. Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, about 1.4 mile northwest of the Ponderosa Dam. 246 Comment
  UC1562427  Agrostis avenacea Lowell Ahart 1990-5-25 6492 Butte e Enterprise Boat Launch Area (about 1/8 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 259 Comment
  SEINET10508561  Agrostis diegoensis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4091 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
  CDA28123  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, ~ 2.25 mi N and 1.25 mi E of Honcut, ~12 mi (air) SE of Oroville. Comment
  CAS-BOT-BC127364  Agrostis exarata Lowell Ahart 1987-7-8 5799 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  CHSC94554  Agrostis exarata Lowell Ahart 2006-9-11 13301 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
  UC1594714  Agrostis exarata Lowell Ahart 1992-8-2 6907 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  CHSC8192  Agrostis microphylla D. McClain 1969-4-18 63 Butte 500 yds. N. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its juction with Feather River Highway. 487 Comment
  CHSC93479  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CAS-BOT-BC139081  Agrostis pallens Lowell Ahart 1980-7-4 2462 Butte Along Forbestown Road. 750 Comment
  JEPS116002  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC49497  Agrostis scabra Vernon Oswald; Lowell Ahart 1987-7-1 3066 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC28561  Agrostis stolonifera M. S. Taylor 1978-7-21 1796 Butte Lake Madrone, at its junction with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 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
  UCD53785  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte locally abundant at the summit east of Jonesville. 2133 Comment
  CHSC41140  Aira caryophyllea R. L. Ondricek-Fallscheer 1982-3-22 132 Butte Along Hwy 149, ca. 1 mi e of jct. of Hwy 99 and Hwy149; ca. 11 mi se of Chico (Hwy 32). 60 Comment
  CHSC6700  Aira caryophyllea Marilyn Lee 1968-4-19 127 Butte Side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards E. of cemetary, Table Mt. Comment
  CHSC98974  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  SEINET10507041  Aira caryophyllea Mary Susan Taylor 1976-3-30 Taylor 1043 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
  SEINET10507042  Aira caryophyllea Lowell Ahart 1983-4-1 Ahart 3913 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  SEINET10868764  Aira caryophyllea Lowell Ahart 1987-5-6 Ahart 5546 Butte On dry sand and silt, on gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-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
  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
  CHSC36909  Allium amplectens S. Azevedo; R. A. Schlising 1980-6-13 3700 Butte NE of Forest Ranch; 2.3 mi e and se of Hwy 32 along Garland Road, near jct with Doe Mill Road and Ponderosa Way. 902 Comment
  CHSC51934  Allium amplectens E. Ray Latham 1988-4-21 Butte 100 m E of the E end of Fremont St, Chico. 30 Comment
  CHSC84320  Allium amplectens Lowell Ahart 2003-7-23 10437 Butte On the east side of Hurleton Swedes Flat Road, about 1/10 mile south of Upper Rocky Honcut Creek, about 1 1/4 miles south of Forbestown Road, about 1 1/2 miles (air) south of Hurleton. 565 Comment
  CHSC96559  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  UCSC000150  Allium amplectens Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  HSC32830  Allium amplectens Steven Lagos 1974-4-20 9 Butte Skyway Rd. Comment
  SEINET3883765  Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy. #70, 4.4 mi. s. of the Oroville Dam Exit (Hwy. #126).; 0 Comment
  CHSC36904  Allium campanulatum R. A. Schlising; R. Banchero 1980-6-12 3692 Butte N part of county along Hwy 32, 0.25 mi s of Tehama County line. 1121 Comment
  JEPS27141  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit Table Mt. 304 Comment
  CAS-BOT-BC466716  Allium cratericola C. C., Mrs. Bruce 1899-1-1 1901 Butte Doe Mill Comment
  SEINET12046120  Allium cratericola Unknown 1978-1 8 Butte N side Cherokee Rd., ca 5.8 mi E jct Hwy. 70 and Cherokee Rd., 12.5 mi N Oroville. Oroville Quadra 396 Comment
  SEINET12048533  Allium cratericola Unknown 1984-1 80 Butte ca 50 yds. W of Cherokee Rd., on North Table Mountain. ca 6 mi N of Oroville 396 Comment
  SEINET3884403  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3371 Butte Above Lunt Rd., 0.4 mi. n. of Hwy. #70.; 0 Comment
  UCD141836  Allium cratericola L. K. Mann 1959-4-12 s.n. Butte Table Mountain, East of Chico near Cherokee. Comment
  RSA770536  Allium jepsonii S. Mashayekhi, M. Biabani 2010-6-11 SM 061 Butte 0.29 miles north on Andy Mt. Road with its junction of Hwy 70. West side of road. 955 Comment
  CHSC49476  Allium membranaceum Vernon Oswald 1987-5-28 2938 Butte Jordan Hill Rd. 0.2 mi s of Griffin Gulch. 621 Comment
  CHSC115403  Allium obtusum var. obtusum M. Rogers 2013-4-16 Butte On the summit of Big Bald Rock. 944 Comment
  CHSC36950  Allium peninsulare M. S. Taylor 1982-5-2 4391 Butte On n side of Hwy 70 at Pulga bridge, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC40769  Allium peninsulare Lowell Ahart 1985-5-15 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  SBBG17065  Allium peninsulare M. Vincent 1962-4-15 193 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  CHSC77451  Allium peninsulare var. peninsulare Tim Stofer 1997-4-9 5 Butte Located on the east side of trail 100 yds from the shooting range of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  UC843417  Allium platycaule A. A. Heller 1915-6-16 12024 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  CAS-BOT-BC474065  Allium platycaule A. A. Heller 1915-6-16 12024 Butte Summit of Sierra Nevada above Jonesville 2133 Comment
  SBBG29977  Allium validum E. B. Copeland 1930-7-21 Butte Jonesville 1500 Comment
  CAS-BOT-BC171273  Alnus incana subsp. tenuifolia H. F. Copeland 1929-6-12 s.n. Butte Jonesville, beside Jones Creek 1524 Comment
  SEINET10478563  Alnus incana subsp. tenuifolia Mary Susan Taylor 1981-5-13 Taylor 3698 A Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  CHSC28537  Alnus rhombifolia M. S. Taylor 1979-10-13 2242 Butte Big Chico Creek, at end of Upper Bidwell Park Rd, ca. 10 mi e of Chico. 243 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS122216  Alopecurus carolinianus Lowell Ahart 2014-4-16 19368 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
  SEINET10511013  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil of floor of rice field, Peter Ahart Ranch, ca. 2 mi. NE of Honcut. Very common; 50 m. Comment
  SEINET10790510  Alopecurus carolinianus Lowell Ahart 1990-4-15 Ahart 6450 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. T19N R6E nw/S6. Foothill woodland (destroyed). Carolina Foxtail. 290 Comment
  SEINET10507157  Alopecurus saccatus Lowell Ahart 1983-5-12 Ahart 3978 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC107407  Alyssum desertorum Jake Ruygt 2009-5-24 5420 g Butte McArthur-Burney Falls State Park. 895 Comment
  CHSC31519  Amaranthus albus L. Ahart 1974-6-3 471 Butte Peter Ahart Ranch, Honcut. 45 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
  UCSB64011  Amaranthus albus Ahart, Lowell 1982-7-10 Butte About 1/4 miles south-east of the Gray Lodge Headquarters, about 12 miles south-west of Gridley, Butte County, California 30 Comment
  UC1562281  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Lake); Lake Oroville 243 Comment
  CHSC42942  Amaranthus deflexus Lowell Ahart 1987-7-19 5842 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  SEINET10478807  Amaranthus graecizans Mary Susan Taylor 1977-8-16 Taylor 1442 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC21247  Amaranthus retroflexus M. S. Taylor 1975-6-21 777 Butte In field at end of Citrus Ave, between 11th and 12th aves, Chico. 60 Comment
  JEPS95988  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte northwest of Parrott Landing; Chico, east side of the Sacramento River; large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC1562346  Ambrosia artemisiifolia Vernon Oswald and Lowell Ahart 1990-7-31 4425 Butte on n side of Concow Reservoir ((Camelot Estates Subdivision)) 621 Comment
  CDA34620  Ambrosia psilostachya L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. Comment
  CHSC66835  Ambrosia psilostachya Vernon H. Oswald 1996-8-29 8245 Butte Sacramento River National Widlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the southwest corner of Tract 3.4, Sanctuary II. 32 Comment
  CAS-BOT-BC142952  Amelanchier utahensis A. A. Heller 1915-6-11 11963 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC19540  Ammannia coccinea F. T. Griggs 1974-8-8 143 Butte Growing in the Sacramento River between the Hamilton City bridge and the mouth of Big Chico Creek. Comment
  RSA0106528  Ammannia coccinea Lowell Ahart 2014-9-23 19867 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  UCD102875  Ammannia robusta W. A. Harvey 1953-8-12 s.n. Butte Biggs Rice Experiment Station. Comment
  UCD118945  Amsinckia eastwoodiae M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Cleark Creek Cemetary, ca. 1 mile E of Clark Road, ca. 7 miles SW of Paradise. 152 Comment
  CHSC21278  Amsinckia intermedia M. S. Taylor 1974-2-19 39 Butte In fields above and slightly n of Salmon Hole ca. 300 yds e of Upper Bidwell Park Road and ca. 4 mi n of Chico Municipal Golf Course building. 182 Comment
  CHSC23470  Amsinckia intermedia J. R. Lee 1974-4-22 3 Butte 15 yds n of the Skyway roadside and 6 miles from the Chico city limits. 152 Comment
  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
  RSA754453  Amsinckia intermedia L. Ahart 2009-4-17 15545 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line Comment
  UC727048  Amsinckia lycopsoides A. A. Heller 1941-4-19 16067 Butte n side of Sandy Gulch, Lindo Channel (along roadside edge of a field on the road to Bidwell Park) Comment
  RSA32735  Amsinckia lycopsoides A. A. Heller 1942-4-5 16419 Butte Just north of Artois. Comment
  CHSC3249  Anagallis arvensis Virginia Hagaman 1966-3-21 81 Butte 2 miles from Cherokee on Clark Road at edge of road. Comment
  CAS-BOT-BC272864  Ancistrocarphus filagineus Ahart; Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC28609  Andropogon glomeratus var. scabriglumis M. S. Taylor 1977-11-12 1532 Butte N side of Diversion Dam area, n side of Upper Bidwell Park Rd. Comment
  UCR21785  Andropogon virginicus Paul Reisentz 1979-5-13 s.n. Butte Canyon c. 3 mi southe of the Butte-Plumas Co. line, 1 mi north of Cresta Point Houses, Hwy 70 Comment
  CAS-BOT-BC137800  Andropogon virginicus var. virginicus John Thomas Howell 1959-9-20 34669 Butte Sierra Nevada. Eastern outskirst of Oroville. Lower foothills. 60 Comment
  CAS-BOT-BC391993  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC42563  Angelica breweri Vernon Oswald 1983-8-17 991 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2023 Comment
  CHSC41319  Angelica californica Lowell Ahart 1985-7-9 5108 Butte Along Ponderosa Way, about 1 mile south of the Ponderosa Dam across the South Fork of the Feather River, about 3 miles north-west of Forbestown. 548 Comment
  CAS-BOT-BC84691  Anthemis cotula Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC46331  Anthemis cotula Lowell Ahart 1989-5-23 6251 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC66070  Anthemis cotula Vernon H. Oswald 1996-5-23 7636 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  SFV11428  Anthemis cotula M. L. Vincent 1963-6-10 415 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  UC195390  Anthemis cotula A. A. Heller 1914-6-18 11479 Butte near, east of Butte Creek Durham; Butte Creek Comment
  CHSC43141  Antirrhinum leptaleum R. Banchero; R. Schlising 1980-9-6 331 Butte 0.7 mi ne of the jct of Lumpkin and Forbestown Rd. 493 Comment
  UCD80764  Antirrhinum subcordatum CNPS SN Foothill Team 2006-3-1 Survey Butte CSU Chico, Big Chico Creek Ecological Reserve. Comment
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Jun 5 2011
  CHSC38681  Antirrhinum vexillo-calyculatum subsp. intermedium Vernon Oswald 1983-6-9 660 Butte Upper Bidwell Park, Chico, ca. 100 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 256 Comment
  JEPS124024  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2015-6-16 20243 Butte 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. Comment
  CHSC37343  Aphyllon purpureum B. Castro 1982-4-14 15 Butte On rock outcrop in streambank at south end of North Table Mtn, off Cherokee rd ca 4 mi n of Oroville. 152 Comment
  CHSC63258  Aphyllon purpureum Lowell Ahart 1994-4-22 7286 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  CHSC25276  Apium graveolens K. R. Stern 1977-4-25 Butte Comment
  UCD121510  Apocynum cannabinum L. Ahart 1977-6-13 1414 Butte Peter Ahart Ranch, Honcut. North Honcut Creek. 50 Comment
  UCR88769  Aquilegia formosa J. T. Howell 1951-8-19 28156 Butte Sierra Nevada Mtns., 2 miles west of Pulga 366 Comment
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Oct 10 2010
  CHSC52679  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-24 300 Butte E part of county near Mt. House. 1085 Comment
  SEINET10907251  Arabis breweri Mary Susan Taylor 1975-4-29 Taylor 542 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  SEINET10448239  Arabis glabra Mary Susan Taylor 1979-5-4 Taylor 1993 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  POM196111  Arabis rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  CHSC108  Aralia californica R. M. Staley 1952-7-5 Butte Honey Run. 304 Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC32828  Arbutus menziesii W. Michael Foster 1981-4-24 10 Butte Along both sides of Hwy 70, ca. 2 mi NW of Jarbo Gap and ca. 20 mi N of Oroville. 609 Comment
  CAS-BOT-BC407722  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  RSA133232  Arceuthobium occidentale Del Wiens 1960-6-15 2728 Butte Near Magalia, just north of train depot. Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  CAS-BOT-BC24439  Arctostaphylos manzanita Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6300 Butte On Pentz Rd. near Kunkle Reservoir. Comment
  RSA632989  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27464 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633002  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27478 Butte Ponderosa Way, south of Cohasset. 750 Comment
  UCD52158  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51104 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52249  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51566 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC38860  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15488 Butte Neal road west of Paradise just below the Spring House. Comment
  CHSC24701  Arctostaphylos manzanita subsp. manzanita J. R. Nelson 1976-3-1 6 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  UCD52218  Arctostaphylos manzanita subsp. roofii James I. Mallory 1968-12-3 347 Butte Cohasset Ridge; 2 miles north-northwest of Richardson Springs. 518 Comment
  RSA31999  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC1303073  Arctostaphylos mewukka A. A. Heller 1928-2-22 14776 Butte near Forest Ranch Comment
  CHSC103425  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2009-11-19 16563 Butte On the south 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. 369 Comment
  CAS-BOT-BC38554  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-7-14 51817 Butte Just NE of Pulga Bridge. 417 Comment
  CAS-BOT-BC38555  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51562 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38556  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51563 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38563  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51561 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38571  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1989-4-17 6480 Butte 2 mi. n. on Coutolenc Road. from junction of skyway. 701 Comment
  CHSC108747  Arctostaphylos mewukka subsp. truei B. Castro; L. P. Janeway 2002-7-7 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). 1295 Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  JEPS84879  Arctostaphylos mewukka subsp. truei Wayne Roderick June 1984 Butte Conteleve Road e Paradise 762 Comment
  CHSC3303  Arctostaphylos nevadensis M. L. Miller 1966-4-23 Butte About 1/2 mile above Stirling City on the Skyway. Comment
  UC129116  Arctostaphylos patula Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UCD40394  Arctostaphylos patula Rodney Gale Myatt 1971-6-13 721 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CAS-BOT-BC48251  Arctostaphylos viscida subsp. viscida A. A. Heller 1916-3-12 12280 Butte Butte Creek canyon near Cenierville in the digger pine and blue oak belt. Comment
  CAS-BOT-BC48284  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown 457 Comment
  CAS-BOT-BC48285  Arctostaphylos viscida subsp. viscida Gladys L. Smith 1975-4-9 s.n. Butte Magalia Comment
  CAS-BOT-BC48286  Arctostaphylos viscida subsp. viscida C. R. Quick 1941-7-23 41 -17 Butte Big Bar Mt. Meadow Comment
  CAS-BOT-BC48297  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51084 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  UC876566  Arctostaphylos viscida subsp. viscida A. A. Heller 1916-3-12 12280 Butte near Cenierville; Butte Creek Canyon Comment
  UC1562488  Arenaria congesta var. congesta Vernon Oswald and Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi n of its junction Philbrook Rd. (w of Philbrook Reservoir); Red Fir Forest 1706 Comment
  CHSC34820  Arenaria macrophylla M. S. Taylor 1981-5-12 3690 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC14116  Aristida oligantha F. T. Griggs 1973-8-19 123 Butte 10 miles s of Chico; 0.4 mile s of intersection of Pentz Road and Hwy 99E. Comment
  CHSC45202  Aristida oligantha Lowell Ahart 1977-7-14 1465 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC400425  Aristolochia californica A. A. Heller 1928-3-11 14480 Butte Along Chico Creek above the golf links east of Chico Comment
  CHSC115  Aristolochia californica F. Roos 1930-3-16 Butte On Oroville road near Chico. 76 Comment
  SEINET12088732  Aristolochia californica K. E. Warwick 1978-1 10 Butte 30 m. of Butte Creek at Covered Bridge, 10.2 km ESE of Chico Comment
  CAS-BOT-BC295840  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 Comment
  CHSC50399  Arnica latifolia Vernon Oswald; Lowell Ahart 1990-6-27 4333 Butte Rd 23N31 about 1.4 mi (odometer) northwest of Four Trees Rd, between Four Trees and Coyote Gap. 1475 Comment
  CHSC50814  Arnica longifolia Vernon H. Oswald; Lowell Ahart 1990-7-19 4370 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  CAS-BOT-BC146273  Arrhenatherum elatius var. elatius Lowell Ahart 1983-6-30 4189 Butte On the west side of the west Branch of the Feather River, about 3 miles southeast of Stirling City. 1100 Comment
  CHSC45634  Artemisia douglasiana Vernon Oswald 1985-8-4 1923 Butte Scotts John Rd. 2.7 mi N of Humboldt-Humbug connector road. 1920 Comment
  CHSC94973  Artemisia douglasiana Lowell Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  JEPS120016  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA769225  Artemisia douglasiana L. Ahart 2009-11-19 16554 Butte East side of Big Chico Creek, southwest of meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SBBG128103  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, ca. 0.5 mi W of Pacific Heights Rd, ca. 3.5 mi NW of Palermo 31 Comment
  CAS-BOT-BC400634  Asarum hartwegii A. A. Heller 1915-4-12 11809 Butte Near Cohasset Comment
  JEPS108902  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  SEINET10475949  Asarum hartwegii Mary Susan Taylor 1980-3-8 Taylor 2372 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10961641  Asclepias eriocarpa R. Carter 1966-7-6 Carter 465 Butte 7 mi E of Oroville on E side of Feathervale, 0.23 mi S of intersection of Wyandotte-LaPorte Rds. 244 Comment
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC46468  Asclepias speciosa Vernon Oswald 1989-6-26 3813 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of the s gate. 18 Comment
  JEPS98982  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte South side of Biggs Princeton Road, about 1 mile east of Butte Creek, about 7 1/2 miles west of Biggs. 21 Comment
  CHSC33558  Aspidotis californica M. S. Taylor 1981-5-5 3604 Butte On the e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CAS-BOT-BC68879  Aspidotis californica M. S. Taylor 1981-5-5 3604 Butte Forbestown quad. On E side of Lumpkin-Laporte Rd, 1 mi N of Enterprise Bridge over sout fork Feather River, 457 Comment
  CAS-BOT-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  CAS-BOT-BC65913  Aspidotis densa John Thomas Howell; Gordon H. True 1969-4-9 45491 Butte Magalia 701 Comment
  POM193102  Aster occidentalis var. occidentalis E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  CDA26672  Astragalus gambelianus Sterling O. Mattoon 1971-4-27 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  CAS-BOT-BC192799  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CAS-BOT-BC68690  Athyrium filix-femina var. californicum Lowell Ahart 1983-9-21 4461 Butte 3 miles north of the Sly Creek Dam, north of the Strawberry Valley, along a small stream which is called French Creek 900 Comment
  CHSC25288  Athyrium filix-femina var. cyclosorum M. S. Taylor 1977-7-15 1422 Butte On w branch of the Feather River, ca. 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  CHSC39357  Athyrium filix-femina var. cyclosorum L. Ahart; P. Ahart 1983-9-21 4461 Butte Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. 900 Comment
  CHSC44606  Athyrium filix-femina var. cyclosorum Vernon Oswald 1987-7-13 3108 Butte Willow Creek ca. 0.3 mi w of Humbug Rd., ca. 3.25 mi (air) ese of Jonesville. 1828 Comment
  CHSC94559  Athyrium filix-femina var. cyclosorum Lowell Ahart 2006-9-11 13271 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
  UC474218  Athyrium filix-femina var. cyclosorum H. F. Copeland 1928-8-18 1017 Butte neighborhood of Jonesville (woods near Butte Creek) 1600 Comment
  CHSC27232  Aucuba japonica P. Moyer 1972-3-18 141 Butte Front entrance of Bidwell Mansion. 60 Comment
  CAS-BOT-BC146180  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC34148  Azolla filiculoides L. Ahart 1981-9-27 3214 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo R, ca. 4 mi ne of Palermo. 80 Comment
  CHSC50017  Azolla filiculoides Lowell Ahart 1990-1-17 6409 Butte Below the high water line of Lake Oroville, west of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 301 Comment
  CHSC103016  Azolla microphylla Lowell Ahart 2009-10-8 16412 Butte In a deep large ditch, on the east side of the road, about 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC40296  Baccharis pilularis subsp. consanguinea Lowell Ahart 1985-2-17 4838 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC51059  Baccharis salicifolia Pauleen Broyles 1987-4-29 1017 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. Near Singer Creek, below confluence with Pine Creek. Comment
  CHSC48971  Bacopa rotundifolia Vernon Oswald 1988-8-8 3683 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC66361  Bacopa rotundifolia Vernon H. Oswald 1996-6-20 7830 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  UC397039  Barbarea orthoceras E. Copeland 1929-7-14 Butte near Jonesville 1600 Comment
  CHSC20099  Bellis perennis M. S. Taylor 1975-4-8 448 Butte Ca. 50 ft N of Itec Bldg, California State University, Chico. 60 Comment
  CHSC110394  Bidens frondosa Lowell Ahart 2012-9-28 18468 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC25452  Bidens frondosa Marc Hayes; Warner 1977-9-12 101 Butte Ca. 10 m N of wooden foot-bridge across W branch of Clear Creek on Butte College Campus near the intersection of Pentz and Clark Rds. 82 Comment
  JEPS120856  Bidens tripartita Lowell Ahart 2013-6-18 18802 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  CDA10527  Blennosperma nanum A. C. Browne 1951-1-12 Butte Highway 99E, 10 miles north of Chico. 0 Comment
  SBBG128906  Blennosperma nanum L. Ahart 2012-5-4 17988 Butte edges of vernal pools, ca. 1/4 mi SW of lone pine tree on rim of Beatson Hollow, ca. 1 1/4 mi NW of iron gate on N side of Cherokee Rd, N Table Mtn, ca. 7 mi (air) N of Oroville 307 Comment
  SEINET11836643  Blennosperma nanum Unknown 1978-1 12 Butte ca 20 yds N of Skyway, 3.7 mi E of jct Hwy 99 & Skyway, 6.7 mi SE of Chico 207 Comment
  CAS-BOT-BC100691  Blennosperma nanum var. nanum Carl B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 1/2 mi. SE. of Butte Creek on Chico - Oroville Road 57 Comment
  RSA0036032  Blennosperma nanum var. nanum Lowell A. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 307 Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 Comment
  SEINET10823515  Bolboschoenus glaucus Lowell Ahart 1982-7-10 Ahart 3675 Butte On dry bare soil on bottom of dry duck pond, 1/4 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC1472740  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 3-a Butte Jonesville 1524 Comment
  UC600573  Botrychium simplex H. F. Copeland 1931-6-6 Butte Jonesville, below cabin Comment
  CHSC61333  Boykinia occidentalis Lowell Ahart 1993-7-22 7087 Butte On a steep bank along Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  CHSC86533  Brachypodium distachyon L. P. Janeway 2003-5-7 7776 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  CAS-BOT-BC106321  Brickellia californica M. S. Taylor 1979-10-28 2197 Butte Butte Conty line at Hwy 70 (Feather River Hwy), between boundry and Arch Rock tunnel. 487 Comment
  JEPS110294  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC37652  Brickellia greenei T. B. Devine 1981-8-25 754 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  JEPS119862  Briza minor Lowell Ahart 2012-5-17 18082 Butte On the north edge of Big Chico Creek, southeast of Table 21, south of the paved park road, northeast of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SEINET10514397  Briza minor A. Arthur Heller 1913-5-25 Heller 10762 Butte Near Pents. 152 Comment
  JEPS107762  Brodiaea californica var. californica Lowell Ahart 2005-5-11 11805 Butte Pasture field, south of Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville 305 Comment
  POM109907  Brodiaea californica var. californica C. C. Bruce 1897-05 2126 Butte [No locality information provided] Comment
  CHSC49484  Brodiaea coronaria Vernon Oswald 1986-5-12 2003 Butte Goodspeed-Watt Rd. 2.6 mi n of Hwy 162. 30 Comment
  CHSC38765  Brodiaea elegans Vernon Oswald 1983-5-21 511 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft w of the power lines. 231 Comment
  SEINET10472613  Brodiaea elegans Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4146 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  JEPS93812  Brodiaea minor Lowell Ahart 1998-7-19 8046 Butte on w side of Hurleton Swedes Flat Road about 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  SEINET189594  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise Sierra Nevada foothills 305 Comment
  HSC38110  Brodiaea minor Thomas W. Nelson, Jane P. Nelson 1976-5-9 2444 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  CHSC112887  Brodiaea nana Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 400 ft NW of Larkin Road. 42 Comment
  JEPS50782  Brodiaea sierrae Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9280 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap (s-facing slope) 609 Comment
  CAS-BOT-BC486485  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET10507830  Bromus alopecuros Lowell Ahart 1984-5-31 Ahart 4656 Butte On the Peter Ahart Ranch, ca. 1.3 mi N and 1/8 mi E of Honcut, ca. 12 mi S of Oroville; Valley Grassland; 50 m. 50 Comment
  UC600590  Bromus carinatus var. carinatus H. F. Copeland 1931-6-10 Butte between Willow Creek and Colby Creek (Jonesville); Jonesville 1676 Comment
  CHSC100497  Bromus catharticus Lowell Ahart; John Dittes 2008-11-14 15455 Butte On the south side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC38800  Bromus catharticus Vernon Oswald 1983-6-13 677 Butte Upper Bidwell Park, Chico, along the n edge of the Hooker Oak Recreation Area. 80 Comment
  JEPS118468  Bromus catharticus Lowell Ahart 2011-5-9 17354 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs 29 Comment
  SEINET10523270  Bromus catharticus Leverton 1874-4-20 LEVERTON s.n. Butte In field across from Pleasant Valley High School on East Ave. in Chico. 34 Comment
  CHSC66172  Bromus commutatus Vernon H. Oswald; Lowell Ahart 1996-5-27 7660 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of the levee road at the SW corner of Tract 3.4, Sanctuary II. 32 Comment
  CHSC56625  Bromus diandrus J. M. Lund 1980-2-24 Butte Chico; 0.5 mi north of East Avenue on the west edge of Hwy 99. 76 Comment
  CHSC6722  Bromus diandrus B. Anthony 1968-3-25 413 Butte Chico State College Campus, Chico. Comment
  CHSC101463  Bromus laevipes L. P. Janeway; Sarah Starkey 2009-7-13 9856 Butte Northern High Sierra Nevada. Upper end of Rocky Ridge, southwest side of Rim Road (Ponderosa Way) 0.3 km southeast of Concow Road near the quarry. 978 Comment
  SEINET3923094  Bromus laevipes Lowell Ahart, Peter Ahart 1984-6-10 4699 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest.; 0 700 Comment
  CHSC75328  Bromus madritensis subsp. madritensis Lowell Ahart 1999-5-24 8078 Butte Along the sides of the museum, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC61365  Bromus orcuttianus Lowell Ahart 1993-7-22 7072 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  SACT000625  Bromus orcuttianus Herbert Copeland 1930-7-21 Butte in woods by butte creek common, small clumps 1524.0 Comment
  CHSC79877  Bromus sterilis G. F. Hrusa; T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada. SE-facing slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39deg 51' N; 121deg 34' W']. 725 Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  CAS-BOT-BC161504  Bromus tectorum Lowell Ahart 1982-6-4 3531 Butte Sierra Nevada. Ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  CHSC111721  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. 62 Comment
  CHSC9482  Bromus tectorum Harley J. Parmenter 1969-3-4 22 Butte 40 yds. s of Richardson Spring Road, 5 yds e of Cohasset Road. 97 Comment
  CHSC88247  Bromus vulgaris Lowell Ahart 2004-7-11 11231 Butte On the east side of the road, on the northeast side of Paradise Lake, about 1/8 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  RSA4655  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  UC1594694  Calamagrostis canadensis Lowell Ahart 1992-7-21 6797 Butte about 2 (air) miles NE of Philbrook (Coon Hollow, S side) 1737 Comment
  CHSC44421  Calandrinia ciliata var. menziesii Lowell Ahart 1988-5-29 6011 Butte On the bottom of a small mined wash, about 1/10 mile north-east of the old barn, 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
  JEPS128725  Callitriche fassettii Lowell Ahart, Emily Meigs Doe 2017-4-1 21388 Butte East of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. Comment
  CHSC43860  Callitriche hermaphroditica Vernon Oswald 1988-4-4 3267 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the western-most farm pond located along a drainage in the section indicated above. 53 Comment
  CHSC96424  Callitriche heterophylla var. bolanderi Lowell Ahart 2007-4-16 13672 Butte In shallow water 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
  CHSC103742  Callitriche marginata Lowell Ahart 2010-5-16 16687 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC29057  Callitriche marginata R. A. Schlising 1980-4-2 3542 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC77983  Callitriche trochlearis Lowell Ahart 2000-5-10 8335 Butte On the bottom of a small moist (seepy) swale, about 100 yards south of a deep wash, 100 feet east of a dirt road, Peter Ahart ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CAS-BOT-BC80360  Calocedrus decurrens Lowell Ahart 1980-9-10 2623 Butte Little Bald Rock 1100 Comment
  CHSC3242  Calocedrus decurrens Virginia Hagaman 1966-2-23 22 Butte Chico State College campus. Comment
  CHSC29106  Calochortus albus M. S. Taylor; J. D. Jokerst 1980-4-27 2567 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CHSC2231  Calochortus coeruleus R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  CHSC51939  Calochortus luteus Carl W. Dobson 1980-4-12 10 Butte Ca 15 uds N of dirt rd atop Musty Buck Ridge, 0.5 mi N of Big Chico Cr, 5.0 mi ENE of Chico. 231 Comment
  CHSC44980  Calochortus monophyllus R. E. Alumbaugh 1984-4-26 15 Butte Scattered 1.2 mi n of Butte creek and 5 ft e of Centerville rd, across from Centerville cemetary, 0.9 mi n of Centerville. 350 Comment
  CHSC51942  Calochortus monophyllus John J. Copeland 1980-3-31 19 Butte 0.95 mi SE of Cohasset Rd, ca 5 mi E of Chico airport. Comment
  JEPS119588  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte About 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  POM169425  Calochortus monophyllus Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET12047249  Calochortus monophyllus W. F. Babb 1980-1 7 Butte W side of Pentz Rd, ca 3.2 km S of Paradise Comment
  SEINET7042406  Calochortus monophyllus A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CAS-BOT-BC494347  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte On dry rocky red serpentine soil, east of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  RSA394720  Calochortus tolmiei Carl B. Wolf 1937-5-17 8719 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  CHSC46246  Calycadenia fremontii Vernon H. Oswald 1989-5-2 3758 Butte Pasture located S of Broyles Rd and W of Hwy 99 owned by Howard Wurlitzer. 53 Comment
  UCD129760  Calycadenia fremontii R. L. Carr 1978-7-7 792 Butte Northeast of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 miles northeast of Manzanita Ave on Upper Bidwell Canyon Road via Wildwood Ave. 232 Comment
  RSA300139  Calycadenia hispida L. Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC46912  Calycadenia multiglandulosa Lowell Ahart 1972-10-4 145 Butte Peter Ahart Ranch, ca. 1 1/2 mi N and 2 1/4 mi E of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS94774  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte 1 1/2 air mi s of Hurleton (along Hurleton Swedes Flat Road about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  CAS-BOT-BC106087  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 miles south of Berry Creek Inn 609 Comment
  POM31432  Calycadenia oppositifolia Mrs. R. M. Austin 1883-05 s.n. Butte Chico Creek Comment
  POM53155  Calycadenia oppositifolia A. A. Heller, Brown 1902-5-9 s.n. Butte Berry Canyon (near Clear Creek) from type region Comment
  RSA107429  Calycadenia oppositifolia L. S. Rose 1955-6-15 s.n. Butte 3 miles E of Pentz, Canyon of W Branch of N Fork of Feather River 183 Comment
  UC1971679  Calycadenia oppositifolia 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Road jct, ca. 200 yds N on small dirt powerline road (very near to GDC 553, 558) 653 Comment
  JEPS120033  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  CHSC26701  Calycadenia truncata M. S. Taylor; M. Hayes 1977-8-16 1453 Butte On N side of Clear Creek next to the newly built bridge (population partially destroyed by the construction), Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CHSC65535  Calycadenia truncata L. P. Janeway 1995-7-14 4853 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge; 0.5 mi south of Road 21N25Y. Top of a steep slope overlooking Frey Creek. 1066 Comment
  UC89045  Calycadenia truncata H. E. Brown Nov 15 1896-Nov 30 1896 121 Butte near Clear Creek 53 Comment
  UC726547  Calycadenia truncata A. A. Heller 1941-10-5 16332 Butte Comment
  UCR88046  Calycadenia truncata subsp. scabrella C. R. Quick 1964-7-9 64- 62 Butte Sierra Nevada Mtns., north of Jarbo Gap Comment
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Oct 10 2010
  CAS-BOT-BC90922  Calycanthus occidentalis A. A. Heller 1938-5-28 15122 Butte 25 miles east of Oroville on Highway #24. Comment
  UC1136670  Calyptridium monospermum P. L. Johannsen 1936-7-21 954 Butte 1/2 mi e of Chaparral House (Lassen National Forest); Lassen National Forest 1584 Comment
  CHSC33653  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3681 Butte Along Hwy 32, 0.2 mi N of main intersection of Forest Ranch. Comment
  JEPS108900  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows 1400 Comment
  CDA13284  Calystegia occidentalis subsp. occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-9 13132 Butte Plumas National Forest; E side above Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  RSA4474  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  RSA37526  Camissonia tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Highway 97, Butte Creek Comment
  SEINET10462920  Campanula prenanthoides Edwin B. Copel 1930-8-4 Copeland 482 Butte JONESVILLE, SOIL EXPOSED BY SLIDE, IN SHADE 1500 Comment
  CAS-BOT-BC37064  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC37065  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico. Comment
  CAS-BOT-BC37066  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico. Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  CHSC11925  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CAS-BOT-BC37265  Cardamine breweri Lowell Ahart 1977-7-26 s.n. Butte Sutter Buttes Region. One mile north of the Golden Trout Crossing on the South Fork of the Feather River. 650 Comment
  CAS-BOT-BC37266  Cardamine breweri Lowell Ahart 1977-5-18 s.n. Butte Sutter Buttes Region. Near Golden Trout Crossing, South Fork of the Feather River. 700 Comment
  CHSC501  Cardamine californica G. Spurlock 1935-3-19 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC101975  Cardamine californica var. californica John Copeland 1980-2-20 9 Butte Ca. 0.8 mile SE of Cohasset Road, E side of Maple Branch. Comment
  POM95848  Cardamine californica var. integrifolia C. C. Bruce 1897-02 1944 Butte Little Chico Comment
  CHSC34479  Cardamine oligosperma M. S. Taylor 1975-4-26 521 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  HSC64130  Cardamine oligosperma J. P. Smith 1973-3-22 5922 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC32119  Cardamine pachystigma L. Ahart 1975-4-1 735 Butte Along edge of rd, 2.5 mi s of Ponderosa Dam, n of Forbestown. 426 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CHSC101155  Carduus pycnocephalus Lowell Ahart 2009-5-15 15691 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
  CHSC52745  Carex L. P. Janeway 1988-7-29 3134 Butte Near West Branch Feather River at crossing of road into Coon Hollow. 1615 Comment
  CHSC45074  Carex abrupta Vernon Oswald 1987-6-9 2964 Butte Scotts John Creek where it crosses the connector road between Humboldt and Humbug roads, ca. 2.5 mi e of Jonesville. 1755 Comment
  SEINET10467018  Carex amplifolia Lowell Ahart 1985-6-30 Ahart 5077 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC53710  Carex angustata L. P. Janeway 1987-6-26 2319 Butte Southwest end of Logue Meadows. 1325 Comment
  CAS-BOT-BC19108  Carex aurea Lowell Ahart 1981-8-15 3046 Butte Southeas of Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  RSA4411  Carex aurea E. B. Copeland 1930-6-23 s.n. Butte Jonesville. 1500 Comment
  CHSC43914  Carex barbarae L. P. Janeway 1986-9-20 1882 Butte West side of Comanche Cr and north side of Ord Ferry Rd. 33 Comment
  CHSC48543  Carex brainerdii L. P. Janeway 1987-6-8 2161 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of road to Coyote Gap. 640 Comment
  CHSC52846  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3079 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  CHSC115853  Carex cyrtostachya Peter F. Zika 2011-7-6 25535 Butte Mooreville Ridge Road, 0,8 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands. 1055 Comment
  RSA0045627  Carex divulsa Lowell A. Ahart 2012-5-25 18113 Butte Nnorthwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. 59 Comment
  CHSC45079  Carex echinata subsp. echinata Vernon Oswald 1987-5-21 2920 Butte Just w of the Skyway 1.4 mi s of Inskip. 1426 Comment
  CHSC52861  Carex echinata subsp. echinata L. P. Janeway 1987-6-26 2311 Butte 2.5 mi E of Granite Ridge along road to Lynch and Logue Meadows; along Camp Creek. 1365 Comment
  CHSC99757  Carex feta Lowell Ahart 2008-6-13 14818 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
  JEPS114981  Carex feta Lowell Ahart 2008-6-13 14818 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
  UCSB63767  Carex feta Janeway, L. 1995-7-16 Butte Kimshew Point quad., T24N, R4E, SE 1/4 of SW 1/4 of sec. 13; 0.8 mi. northwest of Oak Point; 0.8 mi. east of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi. north of Kimshew Creek; along Concow Road; 8.2 mi. east of West Branch Feather River 1402 Comment
  CAS-BOT-BC21238  Carex fracta R. Tallent 1987-8-18 953 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville. 1720 Comment
  CHSC47061  Carex fracta L. P. Janeway 1989-5-17 3247 Butte Cyn overlook (S Fk Feather River) along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. 693 Comment
  UC532225  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville 1524 Comment
  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
  JEPS116059  Carex gracilior Lowell Ahart 2009-6-18 15911 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  UC1748286  Carex heteroneura L. P. Janeway 1999-7-17 6508 Butte Along Scotts John Creek 0.2 mi N of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CAS-BOT-BC20951  Carex heteroneura J. D. Jokerst 1982-9-7 1658 B Butte Montane meadows and roadside ditches, east end of Coon Hollow on north side of the West Branch Feather River. 1676 Comment
  CHSC43919  Carex heteroneura var. heteroneura L. P. Janeway 1986-9-1 1836 Butte NE-facing slope above Philbrook Reservoir. 1798 Comment
  CHSC44660  Carex hoodii L. P. Janeway 1988-6-25 2891 Butte Near Bull Hill Rd 1.5 mi from The Skyway. 1493 Comment
  SEINET4286036  Carex infirminervia Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir Comment
  CHSC113461  Carex integra Lowell Ahart 2014-7-7 19591 Butte Disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbook Reservoir. 1664 Comment
  RSA774141  Carex integra L. Ahart 2010-9-21 17218 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  SEINET10710015  Carex jonesii Vernon H. Oswald, Lowell Ahart 1988-6-17 Oswald 3404 Butte T20N R7E se/ne/S13, Yellow Pine Forest. Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Small part of a tufted sedge growing along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1067 Comment
  CHSC59006  Carex laeviculmis Lowell Ahart 1992-6-26 6783 Butte Bog like area, on the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CHSC45255  Carex lemmonii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3086 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CHSC84921  Carex lemmonii L. P. Janeway 2003-7-13 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  UC478550  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville 457 Comment
  JEPS121959  Carex limosa Lowell Ahart 2014-7-7 19583 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC52283  Carex mariposana L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2995 Butte At Crane Valley (upper Big Kimshew Cr); a large montane meadow. 1569 Comment
  CHSC12172  Carex multicaulis Lowell Ahart 1973-5-6 Butte Near Challenge. 762 Comment
  CHSC91270  Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  RSA716322  Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Northern High Sierra Nevada; Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km. south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  SEINET11634492  Carex multicaulis M. S. Taylor 1981-1 3435 Butte along Feather River Hwy 70 just NE of Pulga to Cresta Powerhouse, ca 20 mi NE of Oroville 518 Comment
  HSC86840  Carex nervina L. P. Janeway, Robert A. Schlising, B. Castro 1988-7-30 3146 Butte Coon Hollow, along dirt road 0.9 mi. SE of W Branch Feather River 1646 Comment
  CAS-BOT-BC119566  Carex nudata Lowell Ahart 1980-5-12 2250 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC61219  Carex nudata Lowell Ahart 1993-4-8 6932 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
  SEINET7569421 Image available Carex nudata L. P. Janeway 2003-5-11 7783 Butte Stirling City 7.5' quad. High Cascade Range, along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte), just upstream of the diversion structure. 588 Comment
  CHSC49387  Carex pachystachya L. P. Janeway 1987-7-4 2413 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC52233  Carex pachystachya L. P. Janeway 1987-6-19 2238 Butte Along Sly Creek at crossing of dirt road to the SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  UC600697  Carex pellita H. F. Copeland 1923-8-1 554 Butte Jonesville Comment
  UCD140771  Carex praegracilis R. E. Preston 1982-4-4 215 Butte Gray Lodge wildlife management area. 18 Comment
  UC1108043  Carex preslii H. F. Copeland 1932-7-24 Butte Rim of south wall of Butte Creek drainage Comment
  CAS-BOT-BC117982  Carex rossii L. P. Janeway; Robert A. Schlising 1988-7-1 2929 Butte Jonesville quad. Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  SEINET7575670 Image available Carex specifica Unknown 2004-7-24 8183 Butte Jonesville 7.5' quad, High Cascade Range, near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. Comment
  CAS-BOT-BC117020  Carex straminiformis James D. Jokerst 1980-8-2 1042 Butte Rocky scree just below summit of Humboldt Peak in the extreme N corner of Butte County Comment
  SEINET10749868  Carex straminiformis A. Arthur Heller 1928-6-16 Heller 14614 Butte Damp grassy places in the yellow pine forest at Butte Meadows. Comment
  UC202968  Carex subfusca H. M. Hall 1914-7-25 9781 Butte Jonesville Sierra Nevada Mts. (n Butte Co.); Jonesville, northern Butte Co., Sierra Nevada Mts. 1554 Comment
  SEINET10880020  Carex tompkinsii Mary Susan Taylor 1980-5-8 Taylor 2599 Butte T24N, R3E E half NW sec. 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi. E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CAS-BOT-BC114981  Carex vulpinoidea J. Sigg 1987-6-5 2954 Butte E side of the Sacramento River just N of Golden State Island. 33 Comment
  CAS-BOT-BC248932  Castilleja Frances Brown 1935-4-1 s.n. Butte Near Durham Comment
  SEINET14183557  Castilleja W. Short 1959-4-11 14 Butte US Hwy 40, 15 miles E of Oroville. 549 Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  CAS-BOT-BC249593  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte Canyon of the north fork of the Feather River along highway US, at Pulga Bridge, west side of river Comment
  UC580770  Castilleja applegatei subsp. pinetorum P. L. Johannsen 1936-7-17 933 Butte 2.5 mi se Butte Meadow; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  UC726497  Castilleja applegatei subsp. pinetorum A. A. Heller 1942-6-5 16498 Butte 3 mi w Pulga Comment
  JEPS80696  Castilleja arachnoidea R. Banchero 1981-7-14 Butte about 5 air mi e Jonesville (Humbug Summit); , Jonesville Quad. 2057 Comment
  CHSC3752  Castilleja attenuata R. L. Adams 1964-4-12 79 Butte 200 yds. E. Manzanita School on Manzanita Ave. NE Chico. Comment
  CHSC43166  Castilleja exserta Don Kroessig 1979-4-16 1 Butte On W side of Bruce Road 1.1 mile n of intersection with the Skyway. 76 Comment
  UCD122474  Castilleja foliolosa Collector unknown 1918-5-5 s.n. Butte Bear Valley. Comment
  CHSC43767  Castilleja lacera Vernon Oswald 1985-5-20 1767 Butte Robinson Mill Rd. 1.8 mi s of Forbestown Rd. 609 Comment
  POM252811  Castilleja pruinosa A. A. Heller 1938-7-20 15277 Butte High ridge betw Inskip and chaparral. 1524 Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  CHSC43963  Castilleja rubicundula subsp. rubicundula V. Oswald 1988-5-25 3340 Butte Gray Lodge Waterfowl Management Area, ca. 0.25 mi s of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CHSC64128  Ceanothus cuneatus Mark D. Reiser 1992-4-21 20 Butte Meadow ca. 300 yds sw of Vilas rd., Cohasset Stage, ca. 8 mi ne of Chico Municipal Airport. 609 Comment
  JEPS119624  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trial, about 50 yards southwest of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. Comment
  JEPS113416  Ceanothus diversifolius Lowell Ahart, Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville 1032 Comment
  CAS-BOT-BC50780  Ceanothus integerrimus A. A. Heller 1938-5-28 15126 Butte Along Highway #24, a short distance east of Pulga Comment
  CAS-BOT-BC50817  Ceanothus integerrimus A. A. Heller 1913-6-7 10827 Butte West Bracnh of the North Fork of the Feather River near Stirling 914 Comment
  CHSC64129  Ceanothus integerrimus Michael Deal 1992-4-19 5 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  SBBG32273  Ceanothus integerrimus L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CHSC55404  Ceanothus integerrimus var. macrothyrsus C. G. Morris 1991-4-18 14 Butte Collected 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  POM85326  Ceanothus integerrimus var. macrothyrsus Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  POM85959  Ceanothus integerrimus var. macrothyrsus C. C. Bruce 1897-05 1814 Butte Iron Canyon Comment
  CHSC48834  Ceanothus lemmonii Vernon Oswald 1984-4-9 1119 Butte Jct. of Forbestown Rd. and Lumpkin Rd., ca. 10 mi e of Oroville. 548 Comment
  UC726726  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  UCR131691  Ceanothus prostratus C. B. Wolf 1941-7-23 11054 Butte Northern Sierra Nevada Mtns., 7 miles west of De Sable on road to Forest Ranch 762 Comment
  CHSC62507  Celtis sinensis B. Castro 1990-10-11 436 Butte Midway between Chico, Paradise, and Oroville, ca. 0.3 mi N of 'Pentz', N of jcn Pentz and Messilla Valley Roads. Occasional tree on E edge of Dry Creek. Three other similar trees by house ca 200 yds upstream. 121 Comment
  CHSC31915  Centaurea calcitrapa M. S. Taylor 1980-8-30 3323 Butte In Potter Ravine along creek at dirt rd crossing betw. The High Rocks and Box Hall Flat, ca. 2 air mi e of Oregon City on Table mt, 9 mi n of Oroville. 304 Comment
  CDA19001  Centaurea maculosa Keck, Riley 2000-7-25 PDR 1170759 Butte 2 miles N of Skyway, on the west side of Coutolenc Rd in the vicinity of Magalia. 0 Comment
  CAS-BOT-BC272091  Centaurea melitensis Lowell Ahart 1988-7-24 6129 Butte In logged over area, about 1/20 mile north-east of the intersection of Ponderosa Way adn Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  CHSC97333  Centaurea solstitialis L. P. Janeway 2007-7-30 9147 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. 1204 Comment
  JEPS124193  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 -A Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  CHSC30747  Centromadia fitchii M. S. Taylor 1980-8-15 3249 Butte Ca. 0.5 mi n of Oroville, on w side of Cherokee Rd, on se slope of South Table Mt. 243 Comment
  CHSC2342  Cephalanthera austiniae R. Carter 1964-6-12 118 Butte About 3/4 mi. W of Forbestown where dirt road turns off of Forbestown R. 914 Comment
  CHSC35978  Cephalanthera austiniae M. S. Taylor 1982-6-24 4746 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  JEPS119723  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  RSA722686  Cephalanthus occidentalis Richard R. Halse 2006-8-1 6976 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC388174  Cerastium fontanum Javier Penalosa 1962-6-18 2451 Butte Near confluence of French and Peavine Crks. 609 Comment
  CHSC98979  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  RSA0118721  Cerastium glomeratum Lowell A. Ahart 2014-4-15 19355 Butte About 400 yards west of the old road, about 3.5 miles (air) northeast of Oroville Dam. 236 Comment
  CDA3345  Cerastium glomeratum L. Going 1966-3-3 Butte Llano Seco Ranch Ord Ferry Road, Dayton. 0 Comment
  CHSC48046  Ceratonia siliqua L. P. Janeway 1989-10-30 3650 Butte City of Chico; planted along Broadway Ave in the block just south of Little Chico Cr. 59 Comment
  CHSC113371  Ceratophyllum demersum Lowell Ahart 2014-4-16 19373 Butte In shallow water, small pond on the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  JEPS120146  Ceratophyllum demersum Lowell Ahart 2012-4-30 17927 Butte About 70 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC86851  Chaenactis glabriuscula var. heterocarpha L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7787 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  CHSC48842  Chamaebatia foliolosa Vernon Oswald 1985-5-20 1773 Butte Forbestown Rd. 0.3 mi ne of Robinson Mill Rd. 822 Comment
  CHSC30736  Chamaesyce glyptosperma M. S. Taylor 1980-7-6 3056 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. 67 Comment
  CHSC34126  Chamaesyce maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  JEPS108953  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
  POM215884  Chamaesyce maculata Willis H. Wheeler 1935-10-24 296 Butte Foreign Plant Introduction Sta., Chico. 76 Comment
  SEINET10690232 Image available Chamaesyce ocellata A. Arthur Heller 1913-9-16 Heller 11140 Butte Hills near Big Chico creek, east of Chico. Comment
  CHSC47677  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1989-9-21 6392 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC83024  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2002-10-17 9995 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS115581  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-9-13 16404 Butte On the bottom of a large wash, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcutt, about 12 miles (air) south of Oroville 30 Comment
  CHSC12129  Cheilanthes gracillima J. M. Pitts 1972-4-15 117 Butte At the top of the trail down into Coal Canyon from the top of Table Mountain. 304 Comment
  SEINET10966199  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3454 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  JEPS95989  Chenopodium album Lowell Ahart 1999-10-28 8312 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA746977  Chenopodium album var. missouriense George K. Helmkamp, E. Helmkamp 2007-10-7 13065 Butte East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CHSC61974  Chenopodium strictum var. glaucophyllum Vernon H. Oswald 1993-10-19 5955 Butte N side of West East Ave., Chico, between Cussick and Alamo avenues. 51 Comment
  CAS-BOT-BC451373  Chimaphila menziesii E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  CHSC33973  Chimaphila menziesii M. S. Taylor 1981-5-13 3704 Butte Jct. of 23N15.5, 22N66X and 22N40X, ca. 2 air mi s of Four Trees Rd, ca. 1 air mile w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  POM173376  Chimaphila umbellata subsp. occidentalis H. F. Copeland 1928-8-14 1002 Butte Neighborhood of Jonesville. Comment
  CAS-BOT-BC184906  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  CHSC88286  Chloris virgata Lowell Ahart 2004-6-28 11147 Butte On the east side of Lone Tree Road, about 1/2 mile north of Palermo Road, about 1 1/2 miles (air) northwest of Palermo, about 5 miles (air) south of Oroville. 43 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
  CHSC102813  Cichorium intybus Lowell Ahart 2009-7-3 15985 Butte 10 yards east of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 90 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC84036  Cichorium intybus Lowell Ahart 2003-6-19 10293 Butte Wash, Peter Ahart Ranch, about 100 yards east of the Palermo Honcut Highway, about 2 1/4 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS71174  Cinna latifolia A. L. Hormay 1929-7-20 Butte (10 mi se) Butte Meadows; se <of> Butte Meadows Comment
  SEINET179237 Image available Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville 1650 Comment
  SEINET10971148  Cirsium coulteri Mary Susan Taylor 1975-6-30 Taylor 821 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  SEINET10473708  Cirsium proteanum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4075 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  UC1586571  Citrullus colocynthis var. lanatus Vernon H. Oswald and Lowell Ahart 1990-10-11 4458 Butte about 4 mi s of Jarbo Gap (Dark Canyon arm of Lake Oroville); Lake Oroville 259 Comment
  CHSC24785  Clarkia arcuata C. E. Stopher 1976-4-14 20 Butte 2.4 km s of Forest Ranch. 579 Comment
  CHSC41118  Clarkia arcuata J. D. Jokerst 1977-4-17 81 Butte On side of Humbug Rd., s. side of Butte Creek canyon, 13 km. ese. of Chico, ca. 1.6 km. from creek. 474 Comment
  CHSC35133  Clarkia concinna subsp. concinna R. A. Schlising 1980-5-23 3593 Butte N of Lake Oroville, along Nelson Bar Road, 2.3 mi w of Highway 70, via Lunt Road. Comment
  SD7361  Clarkia gracilis subsp. albicaulis R. M. Austin 1880-1 Butte 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
  UC725470  Clarkia mildrediae A. A. Heller 1938-7-2 15153 NUL Butte 2 mi w Arch Rock Tunnel; ; W of Arch Rock Tunnel, Butte Co. Comment
  CHSC71144  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-6 4429 Butte Western end of Watson Ridge; about 1.8 mi east-northeast of Bald Rock Dome; about 0.7 mi northwest of Fall River. 1097 Comment
  CHSC71151  Clarkia mildrediae subsp. lutescens L. P. Janeway 1994-7-7 4684 Butte South side of ridge between Haphazard, Baker, and Foreman Creeks; 3.7 road mi west of Oroville-Quincy hwy and Rogers Cow Camp via Roads 23N15, 22N66X, and 22N40X. Southwest-facing road cutbank and above. 1158 Comment
  HSC93259  Clarkia mildrediae subsp. lutescens L. P. Janeway 1995-7-7 4839 Butte Between Mtn. House, Brush Creek and Mosquito Creek, timber plantation above Rd. 22N49, .1 mi. N of French Creek Rd. 976 Comment
  RSA646257  Clarkia mosquinii subsp. xerophila T. Mosquin 1959-7-2 3336 Butte 0.2 mile west of Enterprise, along highway Comment
  HSC38017  Clarkia purpurea Thomas W. Nelson, Jane P. Nelson 1976-5-10 2477 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  CAS-BOT-BC163642  Clarkia purpurea subsp. quadrivulnera Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC163652  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1962-6-16 37599 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  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
  CAS-BOT-BC164776  Clarkia rhomboidea Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  CHSC70760  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of West Branch Feather River. 1402 Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  SEINET10492535  Clarkia rhomboidea Lowell Ahart 1988-7-29 Ahart 6102 Butte On dry soil, along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 945 Comment
  UC1539068  Claytonia palustris John R. Swanson 1959-7-4 490 Butte meadow above south bank of Jones Creek (0.4 km e of Jonesville Hotel); Jonesville; Jonesville, Butte Co., above S bank of Jones Creek, E of the Jonesville Hotel. 1550 Comment
  RSA0059516  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Road. Where a main tributary joins Butte Creek. 1500 Comment
  SEINET10572706  Claytonia parviflora Mary Susan Taylor 1981-5-15 Taylor 3745 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  CHSC101765  Claytonia parviflora subsp. parviflora Lowell Ahart 2009-5-15 15719 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC19934  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1975-3-10 380 Butte Abundant on s side of Butte Creek, ca. 30 ft s of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC23140  Clematis lasiantha M. S. Taylor 1976-2-25 1004 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CHSC2478  Clematis lasiantha W. Fitzwater 1958-4-12 Butte Foothills east of Chico. Comment
  CHSC90178  Clematis lasiantha Ross L. Jones 1989-4-12 22 Butte Ca. 200 m s of Butte Creek and 400 m e of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  JEPS115846  Clematis lasiantha Lowell Ahart 2009-4-22 15589 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
  SEINET267150  Clematis lasiantha T. A. Ranker, P. G. Trapp 1994-6-17 1613 Butte Pence Road south of Paradise. 395 Comment
  SEINET12088731  Clematis lasiantha Unknown 1978-1 17 Butte ca 8 mi NE of Chico Municipal Airport and .5 mi NW of Rock Creek, 12 mi NE of Chico Comment
  CHSC28458  Clematis ligusticifolia R. Schlising; M. Banchero, R. Banchero 1979-10-13 3498 Butte Along slough at Sacramento River, at very end of Sacramento Avenue. W of Chico. Comment
  CHSC35974  Clintonia uniflora M. S. Taylor 1982-6-24 4745 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC44298  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek reservoir. 1028 Comment
  CHSC44237  Collinsia parviflora V. Oswald; L. Ahart 1988-7-13 3573 Butte Road to High Lakes e of Philbrook Reservoir. 1859 Comment
  SD6961  Collinsia sparsiflora Mrs. R. M. Austin 1883-1 Butte Butte Co. 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
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC79826  Collinsia tinctoria G. F. Hrusa; T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest. At E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. [Lat./Long. on label is '39 45 N; 121 17 W']. 1100 Comment
  POM219432  Collomia grandiflora E. B. Copeland 1931-6-14 677 Butte Jonesville. 1550 Comment
  SBBG29150  Collomia grandiflora E. B. Copeland 1931-7-14 Butte Jonesville 1550 Comment
  UC392187  Collomia grandiflora E. B. Copeland July, 1929 Butte Jonesville 1600 Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  CHSC74669  Colutea arborescens B. Castro; Elizabeth McClintock 1988-3-7 255 Butte Lower Bidwell Park, Chico. On North Park Drive, on N side of Big Chico Creek, near end of bridge which connects with a large thicket of this species on the opposite side of the creek in the vicinity of Cedar Grove. Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC76939  Convolvulus arvensis Margie Collins 1894-5-1 Butte Chico. Comment
  UC879373  Convolvulus arvensis A. A. Heller 1916-9-9 12657 Butte near Durham Comment
  CAS-BOT-BC286058  Conyza canadensis Lowell Ahart 1986-11-9 5438 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CAS-BOT-BC286060  Conyza canadensis John Thomas Howell 1961-9-22 36732 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC286068  Conyza canadensis Lowell Ahart 1982-10-6 3848 Butte Along the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CHSC112539  Cordylanthus pilosus subsp. hansenii B. Castro 2012-10-18 1989 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 700 ft downstream (WSW) of its crossing under the Cohasset Hwy bridge. 56 Comment
  CDA5367  Coriandrum sativum L. Ahart 2001-5-1 8742 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  JEPS115604  Cornus glabrata Lowell Ahart 2009-5-23 15733 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west 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
  RSA28808  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West side of the Sierra Nevada at West Branch. 1037 Comment
  JEPS98304  Cortaderia selloana Lowell Ahart 2000-9-2 8678 Butte Near 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
  CAS-BOT-BC401855  Corydalis caseana subsp. caseana Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CDA34558  Cotoneaster pannosus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC113144  Crassula aquatica Lowell Ahart 2013-11-13 19247 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
  SEINET10449701  Crassula aquatica Mary Susan Taylor 1980-5-31 Taylor 2762 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC103949  Crassula connata Lowell Ahart 2010-4-30 16598 Butte Notth side of disk gold area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC40608  Crassula connata Ahart; Jokerst 1985-3-24 4853 Butte Serpentine Point, West of Yankee Hill. 550 Comment
  CHSC82231  Crassula connata Lowell Ahart 2002-4-14 9481 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  SEINET12215662  Crassula erecta Unknown 1977-1 19 Butte ca 75 m NW of Cherokee Road, North Table Mountain, 8 km N of Oroville 366 Comment
  CHSC46741  Crassula saginoides Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31173  Crassula tillaea M. S. Taylor 1980-4-16 2492 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC38402  Crassula tillaea Vernon Oswald 1983-3-14 173 Butte Upper Bidwell Park, Chico, along the hiking trail, ca. 1600 ft w of the power lines. 195 Comment
  CAS-BOT-BC290324  Crepis L. W. Swift 1934-5-8 105 Butte Plumas National Forest. S Challenge 914 Comment
  CAS-BOT-BC290745  Crepis occidentalis subsp. occidentalis H. F. Copeland 1931-6-11 1532 Butte Jonesville. Near Butte Creek Meadows 1828 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  POM29974  Crocidium multicaule C. C. Bruce 1897-01 2074 Butte Foothills Comment
  SEINET5327042  Crotalaria retusa R. McKee 1914-9-1 s.n. Butte U.S. Plant Introduction Garden, Chico, CA Comment
  CHSC33291  Croton setiger S. Posner 1972-9-24 2 Butte Edge of Skyway between Hwy. 99 and Humbug Rd. Comment
  SEINET11170847  Crucianella angustifolia B. Ertter, L. Ahart, J. Strachan 1980-5-6 3282 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, 30 Comment
  JEPS94434  Crypsis schoenoides Lowell Ahart 1997-10-24 7940 Butte about 20 yards n of the South Fork of the Feather River (and on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderoas Dam); Sucker Creek, strand of Lake Oroville 274 Comment
  CHSC97409  Cryptantha affinis Robert Fischer 2006-6-17 1028 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1493 Comment
  CHSC29961  Cryptantha flaccida R. A. Schlising; R. Banchero 1980-6-2 3616 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  CHSC33134  Cryptantha flaccida J. D. Jokerst 1980-5-28 799 Butte Top of North Table Mt, S of Cherokee Rd. 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
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  CHSC40756  Cryptantha intermedia Lowell Ahart 1985-5-15 4966 Butte West of the Lunt Rd, about 1/2 mile north of the intersection of Lunt Rd, and Highway 70, north of Yankee Hill. 502 Comment
  UC708007  Cryptantha intermedia McKee and Westover 1918-6-5 6 Butte Paradise 609 Comment
  CHSC29972  Cryptantha milobakeri R. A. Schlising 1980-6-10 3673 Butte Along Humboldt Road, 1.9 mi NE jct with Hwy 32 at Loma. Comment
  CHSC37212  Cryptantha milobakeri L. Ahart 1982-7-28 3712 Butte On the bottom of the water ditch, ca. 1/8 mi n of Pacific Mine, ca. 5 mi e of La Porte. 1700 Comment
  CHSC43576  Cryptogramma acrostichoides Vernon Oswald 1987-6-9 2969 Butte Summit Lake ca. 4 mi se of Jonesville, ca. 1 mi n of Snow Mt. 1901 Comment
  CHSC3331  Cunninghamia lanceolata Robert L. Smith 1966-4-1 65 Butte Lower Clark Rd., 3 miles W of Pearson Rd., Paradise. Comment
  CAS-BOT-BC85563  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte Near Magalia Comment
  NY16699  Cupressus macnabiana A. A. Heller 1918-5-5 13009 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
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC6609  Cupressus macrocarpa M. MacArthur 1968-6-22 272 Butte Ca. 20 ft. NW EP bld., Chico State College. 60 Comment
  SEINET229238  Cuscuta B. Ertter, J Strachan; L. Ahart 1980-5-8 3325 Butte Peter Ahart Ranch ca 2.5 mi NE of Honcut between Marysville & Oroville 30 Comment
  UC600774  Cuscuta californica H. F. Copeland 1930-7-28 1323 Butte near head of So. Willow Creek (neigborhood of Jonesville); Jonesville 1828 Comment
  UC1191662  Cuscuta obtusiflora var. glandulosa Herbert L. Mason and Verne Grant 1946-8-14 13021 Butte Sacramento Outing Club Butte Sink Comment
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Oct 6 2011
  RSA0118626  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  SBBG119818  Cuscuta pentagona L. Ahart 2006-10-1 13388 Butte W of N Honcut Crk, ca. 2.5 mi N and 2.75 mi E of Honcut, ca. 12 air mi SE of Oroville 54 Comment
  CHSC55056  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte North side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), east of Oroville-Quincy Hwy, about 5 miles (air) north-east of Brush Creek. 1097 Comment
  CHSC99547  Cymopterus terebinthinus var. californicus L. P. Janeway 2008-6-15 9415 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  CAS-BOT-BC190245  Cynodon dactylon Lowell Ahart 1962-6-10 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC152  Cynoglossum grande M. Roberson 1956-3-9 Butte S.W. of Paradise, along Skyway. 426 Comment
  CHSC3536  Cynoglossum grande John Francis 1966-4-6 80 Butte 0.3 mile from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  SEINET10518396  Cynosurus echinatus K. Henegar 1969-5-15 Henegar 55 Butte Upper Bidwell Park, near Big Chico Creek at Bear Hole. Shaded area, sandy soil. Comment
  CAS-BOT-BC114736  Cyperus difformis Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  JEPS120155  Cyperus difformis Lowell Ahart 2012-10-20 18504 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC42934  Cyperus eragrostis Lowell Ahart 1987-7-17 5833 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC114604  Cyperus eragrostis James D. Jokerst 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, ca 3 mi NW of the Oroville Quincy Hwy, 700 Comment
  HSC87257  Cyperus eragrostis L. P. Janeway 1987-5-20 2066 Butte E side of Hwy. 70, just S of the 'rock house' and 0.5 mi. S of Jarbo Gap 671 Comment
  CAS-BOT-BC114382  Cyperus erythrorhizos Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  UCD141048  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  UCD141049  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  SEINET7581945 Image available Cyperus flavescens Lowell Ahart 1987-1 5865 Butte Along the north fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CDA42934  Cyperus iria L. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  UCR257984  Cyperus iria Whitney Brim-Deforest 2013-8-1 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, c. 1.74 miles west of Hwy 99 30 Comment
  CAS-BOT-BC113847  Cyperus niger var. capitatus Lowell Ahart 1982-8-19 1424 Butte Ca. 1 mi N and 3 mi E of Honcut, Peter Ahart Ranch. 50 Comment
  POM313079  Cyperus niger var. capitatus H. L. Mason, Verne Grant 1946-9-27 13141 Butte 3 miles west of Biggs. Comment
  CAS-BOT-BC114073  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte South of Oregon Gulch Road, ca. 1/2 mi N of the Cementery, 335 Comment
  CAS-BOT-BC114080  Cyperus squarrosus A. A. Heller 1917-7-28 1817 Butte Butte Meadows. 1280 Comment
  CHSC46421  Cyperus squarrosus Lowell Ahart 1989-5-28 6284 Butte Large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC68407  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-9-14 1861 Butte Sycamore Creek at Cohasset Avenue near Eaton Road. 54 Comment
  JEPS108959  Cyperus strigosus Lowell Ahart 2006-9-11 13299 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
  RSA78212  Cyperus strigosus E. K. Balls, Percy C. Everett 1952-10-14 18217 Butte 2.6 miles SW of Butte-Plumas County line. Highway 24. 274 Comment
  UCSB63781  Cyperus strigosus Ahart, Lowell 1998-7-18 Butte T20N, R4E, northeast 1/4 Section 17; West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  UC116910  Cypripedium fasciculatum Mrs. R. M. Austin 1879-1 198 Butte Butte Valley Comment
  CAS-BOT-BC68044  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville Comment
  CAS-BOT-BC68045  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville - Butte Creek 1550 Comment
  CAS-BOT-BC68046  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville - Butte Creek 1550 Comment
  JEPS94943  Cystopteris fragilis Lowell Ahart 1997-8-1 7766 Butte about 1/4 mi e Table Mountain (on e side of creek, where basalt is eight sided, about 8 air mi ne of Stirling City); Little Kimshew Creek, Snow Meadow 1524 Comment
  UCD60296  Dactylis glomerata L. Y. Leonard 1919-6-16 X 3096 Butte Chico. Comment
  SEINET10507360  Dactylis glomerata Mary Susan Taylor 1980-5-27 Taylor 2645 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC445502  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte 3 miles west of Chico Comment
  JEPS120989  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards W of a wet meadow, about 40 yards N of Forbestown Road, about 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC4517  Darmera peltata C. Glascock 1965-5-11 380 Butte 14.15 mi. nw of Russell Dr. in south Paradise and ca. 100 yds upstream from the upper end of De Sabla reservoir on stream bank at w roadside on Stirling City Hwy. Comment
  CHSC87576  Darmera peltata R. D. Fischer 2004-5-2 127 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on margins of Big Chico Creek near bottom of 10 Mile House Road. 192 Comment
  SEINET10546586  Datura meteloides Mary Susan Taylor 1974-10-11 Taylor 329 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC31862  Daucus carota L. Ahart 1977-7-14 1467 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD69668  Delphinium Laura Tanata 1982-4-18 24 Butte East side of road on Highway 70, 4.2 miles south of Grand Avenue exit; valley grassland community dominated by grasses, on a dry, sunny, gravel terrace; common erect herb scattered throughout, 4 1/2 dm tall, flower purple. 35 Comment
  CHSC104822  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  CHSC39537  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Found along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CAS-BOT-BC10106  Delphinium hesperium subsp. pallescens Mrs. H. C. Cantelow 1940-5-10 4255 Butte 8.5 mi. SW of Oroville along Hwy. 24 Comment
  CHSC40060  Delphinium nudicaule C. C. Bruce 1899-4-1 185 Butte Grain fields. Comment
  CHSC56875  Delphinium nudicaule Mark Bradford 1983-4-1 10 Butte Summit of Table Mountain, ca. 4 mi. n of Oroville, ca. 2 mi. sw of Cherokee, 1 mi. n of Table Mountain Road. 91 Comment
  CAS-BOT-BC8066  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC61214  Delphinium patens subsp. patens Vernon H. Oswald; Lowell Ahart 1993-3-24 5236 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. 243 Comment
  CHSC93486  Delphinium patens subsp. patens Lowell Ahart 2006-5-8 12610 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC94063  Delphinium patens subsp. patens R. D. Fischer 2005-6-6 740 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico at the parking area for 10 Mile House Road trail in Bidwell Park. Collection made on a grassy ridge top near parking area. 464 Comment
  CAS-BOT-BC17020  Delphinium variegatum L. S. Rose 1931-4-13 s.n. Butte Oroville Comment
  UC204957  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte low hills 8 mi n Oroville Comment
  RSA424685  Deschampsia danthonioides Aaron Liston, M. A. Blumler 1987-4-24 658 -8 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  CHSC105682  Deschampsia elongata Lowell Ahart 2010-9-21 17232 -A 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
  RSA126936  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  CHSC24672  Dicentra formosa C. E. Stopher 1972-4-18 27 Butte 2.9 km sse of Forest Ranch. On e bank of Little Chico Creek. 489 Comment
  CHSC76942  Dicentra formosa Margie Collins 1894-5-1 Butte Chico. Comment
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Jul 7 2010
  POM196108  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  SD122535  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 4710 Butte Ca., 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  UC1362276  Dicentra formosa K. R. Stern Oct 1963 2068 Butte ca 12 mi e Chico (ca 2 mi s of Highway 32 at 15 mile house, along banks of creek) Comment
  CAS-BOT-BC402385  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CHSC48440  Dicentra formosa subsp. formosa Vernon Oswald 1984-4-9 1134 Butte Feather Falls Trail, 2.2 trail mi. from the trail head at the end of Bryant Ravine Rd. 548 Comment
  CAS-BOT-BC402390  Dicentra formosa subsp. formosa D. Parkinson 1964-5-1 s.n. Butte In vicinity of Monk's Store, Cohasset Stage Comment
  CHSC19656  Dicentra peregrina K. R. Stern 1966-4-1 Butte Chico. Comment
  RSA88110  Dichanthelium acuminatum var. fasciculatum J. T. Howell 1951-8-19 28157 Butte 2 miles west of Pulga 366 Comment
  SEINET10533972  Dichelostemma californicum A. Arthur Heller, H. E. Brown 1902-5-8 Heller 5499 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC118579  Dichelostemma capitatum subsp. capitatum Nancy Groshong 2017-4-30 1 Butte Magalia Serpentine. Just west of Coutelenc Road and Skyway, south side of Coutelenc Road. 701 Comment
  RSA725064  Dichelostemma multiflorum L. P. Janeway 2006-4-30 8572 Butte Cascade Range Foothills, E edge of City of Chico, NW side of Humboldt road 2.2km NE of Bruce Road. 146 Comment
  UC843594  Dichelostemma multiflorum Lewis S. Rose 1937-6-10 37353 Butte Hurleton 579 Comment
  SEINET10472710  Dichelostemma multiflorum Mary Susan Taylor 1981-4-5 Taylor 3488 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10839398  Dichelostemma pulchellum Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4864 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC502524  Dichelostemma volubile H. E. Brown 1897-4-15 210 Butte Near Clear Creek Comment
  SD120609  Dichondra donelliana Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-8 331 2a Butte North Honcut Creek, Ahart Ranch, ca. 2.5 miles northest of Honcut between Marysville and Oroville. 49 Comment
  CHSC43279  Digitaria ischaemum Lowell Ahart 1987-8-30 5858 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UCD169358  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove. Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC209035  Digitaria sanguinalis Ira L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC90147  Diplacus douglasii John Copeland 1980-3-8 17 Butte About 0.7 mi southeast of Cohasset Hwy. Comment
  SEINET8340789  Diplacus grandiflorus Lowell Ahart 2006-5-10 12617 Butte Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, abotu 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC61218  Diplacus kelloggii Vernon H. Oswald; Lowell Ahart 1993-3-24 5242 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. 274 Comment
  CAS-BOT-BC153212  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 426 Comment
  CHSC43154  Diplacus layneae R. A. Schlising; D. Ikeda 1980-5-31 3608 Butte Cohasset Ridge, S of village of Cohasset, along firetrail above Cohasset Hwy. Comment
  CAS-BOT-BC153660  Diplacus mephiticus Lowell Ahart 1982-6-15 3584 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC154035  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte West slope of the Sierra near Forest Ranch 822 Comment
  CHSC91109  Diplacus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  JEPS108156  Disporum hookeri L. P. Janeway 1994-7-19 4695 Butte Northern High Sierra Nevada. Northeast side of Watson Ridge, about 0.5 mi south of South Branch Middle Fork Feather River, 1.6 mi east of Pompys Point 1249 Comment
  HSC100766  Dittrichia graveolens Lowell Ahart 2007-10-30 14510 Butte W side of Hwy. 99, ~100 yd. N of Badger Creek Rd., ~500 yd. S of Richvale East Rd., 7 (air) mi. W of Oroville. 34 Comment
  CHSC95143  Dodecatheon alpinum R. D. Fischer 2005-6-5 856 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  RSA461468  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte [Unspecified] 1524 Comment
  CHSC4174  Dodecatheon hendersonii Kathy Sommerstrom 1967-4-25 25 Butte Found 1/8 mi west of covered bridge, 100 yds from Butte Creek on South bank. 76 Comment
  CHSC52118  Dodecatheon hendersonii Gary R. Koses 1979-4-3 15 Butte 5 mi s of intersection of hwy 70 and Cherokee rd. E side of Cherokee rd. Comment
  CHSC116693  Downingia bicornuta var. bicornuta Lowell Ahart 2016-5-17 20842 Butte Middle of a large vernal pool, about 1/2 dmile east of La Porte Road, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  UC336558  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1890 Butte near Chico Comment
  UC725779  Downingia bicornuta var. bicornuta A. A. Heller 1940-5-13 15617 a Butte 3 mi w Chico (on State Highway 32) Comment
  CHSC46261  Downingia insignis Vernon Oswald 1989-5-1 3757 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Fallow fice field located on the e side of the dike road ca. 1.3 mi n of Gridley-Colusa Hwy. 18 Comment
  UCD23256  Downingia ornatissima W. R. Powell 1968-4-23 1474 Butte 2 miles SSE of Oroville. 71 Comment
  CHSC50025  Draba verna var. aestivalis Lowell Ahart 1990-3-19 6424 Butte Along the south side of Pacific Heights Road, about 3 1/2 miles south-west of Orovile. 36 Comment
  RSA304016  Draperia systyla Jim R. Shevock 1972-5-19 1780 Butte Hwy 70, Feather River Canyon. 610 Comment
  JEPS124019  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 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
  RSA713017  Dryopteris arguta L. Ahart 2005-11-12 12481 Butte 90 yards northeast of large parking area by the gate. end of Dark Canyon Road, about 3 miles south of Highway 70 at big Bend Road. 327 Comment
  SEINET10530136  Dryopteris arguta Mary Susan Taylor 1979-3-20 Taylor 1949 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC115450  Dryopteris filix-mas M. Sutton; C. Yasuda 2013-3-19 9 Butte Feather Falls Trail. 1069 Comment
  CHSC5992  Duchesnea indica M. MacArthur 1968-6-12 162 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  UC115213  Dudleya cymosa Mrs. R. M. Austin May 1896 123 Butte Iron Canyon Comment
  CHSC34788  Dysphania ambrosioides L. Ahart 1981-11-6 3224 Butte Near the parking area a little w of the Graylodge Waterfowl Mgmt HQ, ca. 3/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UCSB64004  Dysphania ambrosioides Ahart, Lowell 1981-11-6 Butte A little west of the Gray Lodge Waterfowl Management Area Headquarters, about 3/4 mile west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  CHSC113194  Dysphania pumilio Lowell Ahart 2013-11-29 19292 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC40611  Dysphania pumilio Lowell Ahart 1985-10-12 5203 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reserovir, about 3 miles south of Paradise. 301 Comment
  RSA722301  Echinochloa colona R. R. Halse 2006-8-2 6985 Butte At edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 29 Comment
  CHSC10679  Echinochloa crus-galli Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1131540  Echinochloa crus-galli H. S. Yates 1936-8-14 6125 Butte 10 mi s Durham; Chico Quad. Comment
  SEINET10831129  Echinochloa crus-galli Lowell Ahart 1977-8-14 Ahart 1554 Butte On damp soil in a small slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  CAS-BOT-BC208562  Echinochloa oryzicola Lowell Ahart 1979-9-8 s.n. Butte California Rice Experiment Station 33 Comment
  CAS-BOT-BC208564  Echinochloa oryzicola Lowell Ahart 1984-9-17 4792 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  RSA733900  Echinochloa oryzicola Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  RSA733899  Echinochloa oryzoides Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 853 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  SEINET239848 Image available Echinochloa oryzoides E. Dean, J. Ditomaso; E. Healy 2001-8-20 853 Butte Biggs UC Field Station 30 Comment
  CHSC116301  Egeria densa Lowell Ahart 2015-11-18 20653 Butte On the west side of the Feather River, about one mile south of Palm Avenue, about 2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC2198  Egeria densa V. Holt 1935-9-1 Butte Locality: Chico Creek. 56 Comment
  CHSC114971  Elatine Lowell Ahart 2015-3-31 19983 Butte Bottom of a large duck field, 50 yards north of Parking Lot 3, about one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6-1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC45273  Elatine rubella Vernon H. Oswald 1988-12-13 3724 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC38903  Eleocharis acicularis var. occidentalis Vernon Oswald 1983-5-22 524 Butte Upper Bidwell Park, Chico, 75 ft n of Upper Park Rd. and 75 ft w of the road leading to the North Rim Trail. 91 Comment
  CAS-BOT-BC113461  Eleocharis bella Herbert Faulkner Copeland 1920-8-20 212 Butte Butte Creek Meadow Comment
  CHSC78737  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC113451  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Ca 1/2 mi N of Kinkle Res., ca. 2 mi S of Paradise. 600 Comment
  CHSC45116  Eleocharis bolanderi Vernon Oswald 1988-5-18 3317 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 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
  SEINET3441882  Eleocharis engelmannii Unknown 2000-7-4 8445 Butte Forbestown, Forbestown, about 3.5 air miles southwest, south of the intersection of Black Bart Road and Forbestown Road 730 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC31942  Eleocharis macrostachya J. D. Jokerst; M. S. Taylor, R. Schlising 1979-5-18 718 Butte Top of Cohasset Ridge on slopes facing Mud Cr. 243 Comment
  CHSC45175  Eleocharis macrostachya Lowell Ahart 1979-6-2 1913 Butte Bottom of a large wash in one of the farmed fields, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  CHSC68433  Eleocharis macrostachya L. P. Janeway 1986-10-19 1938 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CHSC78186  Eleocharis macrostachya Lowell Ahart 2000-5-27 8404 Butte Boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SD427  Eleocharis macrostachya E. B. Copeland 1931-7-15 Butte Jonesville; in and beside the Lily Pond, a permanent pool. 533 Comment
  CHSC78564  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET11750485  Eleocharis pachycarpa Unknown 1985-1 5161 Butte Peter Ahart Ranch, ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville,W side of North Honcut Creek 46 Comment
  SEINET13710285  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8597 Butte Oroville Wildlife Area, 4 Mi. SW of Oroville (T18N, R3E, Dec 3, NE 1/4) 140 Ft. 43 Comment
  CHSC44930  Eleocharis parishii Lowell Ahart 1988-7-24 6125 Butte Along the bottom of a road gutter, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  JEPS98350  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte 5 air miles E of Magalia (by the road culvert, NW side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  SEINET7587010 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  CHSC78568  Eleocharis radicans Lowell Ahart 2000-8-30 8677 Butte Bottom of a small depression, southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  JEPS115253  Eleocharis radicans Lowell Ahart 2008-11-4 15403 Butte On the sides of Potter Ravine, in shallow water, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 242 Comment
  SEINET9084534  Eleocharis radicans L. Ahart 2000-9-4 8686 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  CHSC94339  Eleocharis suksdorfiana Lowell Ahart 2006-7-25 13059 Butte In shallow water, in the west part 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
  SEINET10501555  Elodea canadensis Mary Susan Taylor 1975-10-4 Taylor 959 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CDA13730  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1997-6-27 13908 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Uncommon, here in sandy-gravelly, rock outcrop/opening. Perennial, clumping, few-stemmed. 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
  CHSC43100  Epilobium brachycarpum Pauleen Broyles 1987-10-26 1088 Butte Wurlitzer Addition to Vina Plains Preserve. In area of Singer Creek. 55 Comment
  SEINET10841098  Epilobium brachycarpum Mary Susan Taylor 1978-9-8 Taylor 1894 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC166845  Epilobium canum subsp. latifolium Lowell Ahart 1980-9-10 2627 Butte 1 mile north-east of Milsap Bar 900 Comment
  CHSC38570  Epilobium ciliatum subsp. ciliatum Vernon Oswald 1983-6-14 679 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. On seeps both n and s of the road. 134 Comment
  CHSC41314  Epilobium ciliatum subsp. ciliatum S. C. Morey 1983-7-22 550 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC70333  Epilobium ciliatum subsp. ciliatum R. A. Schlising; P. Broyles 1988-7-3 4562 Butte SE of Stirling City, past '5 Corners' at a small stream. Comment
  CHSC94256  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2006-7-16 12986 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS95939  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1999-8-13 8171 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
  UC600547  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-7-19 Butte along Butte Creek Jonesville Comment
  POM214002  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville. 1500 Comment
  RSA767491  Epilobium cleistogamum L. Ahart 2010-6-20 16825 Butte Large vernal pool, about 0.25 miles north of Cox lane, about 1.5 miles east of Palermo Honcut Highway, Guidci Ranch, about 7.5 air miles southeast of Oroville. 60 Comment
  CHSC110413  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 A Butte 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. 39 Comment
  CHSC58928  Epilobium densiflorum Lowell Ahart 1992-8-2 6903 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS104196  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  UC873166  Epilobium densiflorum A. A. Heller 1914-8-20 11691 Butte 5 mi s Pentz; Dry Creek Comment
  CHSC34715  Epilobium minutum M. S. Taylor 1981-5-21 3773 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  HSC16315  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi. S of Pulga, N Fork of the Feather River 579 Comment
  SEINET6644443 Image available Epilobium obcordatum E. B. Copeland 1931-1 664 Butte Jonesville; "the Summit" 2000 Comment
  CHSC46582  Epilobium oregonense Vernon H. Oswald 1989-7-18 3864 Butte Humboldt Rd east of Butte Meadows, just e of the Butte Creek Bridge at Cherry Hill. Near the downstream corner of a meadow bordering Butte Creek. 1389 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS127074  Epilobium torreyi Lowell Ahart 2016-5-30 20898 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC42750  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SBBG17368  Equisetum arvense M. Vincent 1962-4-15 180 Butte 1 mi S of Stirling City on Skyway near small stream Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  CHSC94264  Equisetum laevigatum Lowell Ahart 2006-7-16 12984 Butte In the west edge of a large wet 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
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  RSA724875  Eragrostis pectinacea L. Ahart 2006-9-11 13338 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
  JEPS116076  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  JEPS95862  Eragrostis pectinacea var. pectinacea Lowell Ahart 1999-8-13 8152 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
  SD122515  Eragrostis pectinacea var. pectinacea Lowell Ahart 1984-9-24 4811 Butte Along edge of Middle Honcut Road, circa 3/4 mile East of Highway 70, circa 12 miles South of Oroville 35 Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  JEPS19841  Ericameria parryi var. latior Rimo Bacigalupi with Howard Whisler 1957-7-26 6039 Butte 2.2 mi sw of Nimshew (at e canyonside of Butte Creek, along road berm on the Humbug Road); Butte Creek 579 Comment
  CHSC38343  Erigeron divergens Vernon Oswald 1982-5-3 Butte Bidwell Park, Chico. Just below the north rim ca. 800 ft w of the power lines. 207 Comment
  CHSC46551  Erigeron glacialis var. glacialis V. Oswald; L. Ahart 1989-7-12 3844 Butte Road between Bald Mtn Lookout and Jones Meadow, ca. 2.3 mi (air) nne of the lookout. Edge of meadow. 1828 Comment
  CHSC62092  Erigeron inornatus var. inornatus B. Castro 1987-5-21 121 Butte Ca 9 mi E of Chico via Hwy. 32 and ca 2 mi E on Altatina Drive. 457 Comment
  UC201340  Erigeron inornatus var. inornatus A. A. Heller 1917-7-26 12822 Butte Butte Meadows 1402 Comment
  CHSC50792  Erigeron petrophilus var. sierrensis Vernon Oswald; Lowell Ahart 1990-7-31 4414 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 902 Comment
  CHSC20971  Erigeron sumatrensis M. S. Taylor 1975-9-8 903 Butte Along Big Chico Creek, California State University, Chico, campus. 60 Comment
  CHSC26624  Erigeron sumatrensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  JEPS120723  Eriochloa acuminata var. acuminata Lowell Ahart 2013-10-12 19108 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  CAS-BOT-BC259402  Eriogonum luteolum John Thomas Howell 1967-6-22 42618 Butte Magalia 701 Comment
  CAS-BOT-BC268237  Eriogonum umbellatum var. nevadense A. A. Heller 1917-7-29 12854 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC262205  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  UC1594628  Eriogonum ursinum Lowell Ahart 1992-7-29 6884 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  UC177591  Eriogonum ursinum H. M. Hall 1914-7-27 9787 Butte e Jonesville (Big Summit, Humboldt Road); Big Summit 2042 Comment
  RSA0056354  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Highway 70. 548 Comment
  CHSC37517  Eriogonum ursinum var. ursinum M. S. Taylor 1982-6-6 4608 Butte On serpentine along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 487 Comment
  CAS-BOT-BC262342  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of North Fork of Feather River 182 Comment
  CAS-BOT-BC301306  Eriophyllum lanatum var. croceum C. R. Quick 1951-6-9 51 100 A Butte Big Bar Mt. Comment
  CHSC328  Eriophyllum lanatum var. grandiflorum 1954-5-30 Butte Paradise. 548 Comment
  CHSC86430  Eriophyllum lanatum var. grandiflorum Jenny Marr 1994-6-13 86 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  POM66629  Eriophyllum lanatum var. grandiflorum Edward Palmer 1892-6-7 2049 Butte Near Chico. Comment
  UC867334  Erodium botrys A. A. Heller 1915-3-24 11777 Butte 5 mi s Pentz (near Dry Creek) Comment
  JEPS107323  Erodium cicutarium Lowell Ahart 2005-4-14 11723 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  UCD80353  Erodium moschatum CNPS SN Foothill Team 2005-4-6 SNFN 0099 b Butte CDFG, North Table Mountain Wildlife Area, Table Mountain, Oroville, approximately 1 mile NW of parking area, 123 degrees east of south fork of Coal Canyon. 383 Comment
  POM219374  Erysimum capitatum var. capitatum H. F. Copeland 1931-6-10 1527 Butte Jonesville. Between Willow and Colby Creeks. 1524 Comment
  UCD67352  Erysimum capitatum var. capitatum D. Dubbe 1974-4-26 6 -2 Butte Feather River Canyon, 5 mi S of Poe Power Dam, along hwy 70. Canyon bottom; mixed evergreen forest, with Acer macrophyllum; sandy gravel soil; full sun. Scattered plants along road side. Perennial herb, ca. 6 inches high. 609 Comment
  CHSC20876  Erythranthe bicolor Robert A. Schlising 1963-6-7 2619 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC43538  Erythranthe geniculata Lowell Ahart 1978-5-2 1708 Butte North of the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 396 Comment
  CHSC45725  Erythranthe glaucescens Phillip Scott 1988-4-18 38 Butte Mud Creek Bridge, Meridian Way ca. 3 mi w of Chico. 42 Comment
  CHSC82612  Erythranthe glaucescens Tara Morgan 2002-4-23 34 Butte Found along the walking down the south rim trail located on the east side of Big Chico Creek. Located down from the green gate and left at the split in the trail to a seep area. 389 Comment
  CHSC20117  Erythranthe microphylla M. S. Taylor 1975-4-26 534 Butte SE corner of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC38707  Erythranthe nasuta Vernon Oswald 1983-3-26 209 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  CHSC54310  Erythranthe pulsiferae Vernon H. Oswald; Lowell Ahart 1991-6-5 4642 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platt Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  CAS-BOT-BC133257  Erythronium M. S. Taylor 1980-3-8 2378 Butte Ca. 100 ft sw of Pulga bridge over Hwy 70, ca. 28 mi ne of Oroville 487 Comment
  CHSC2267  Erythronium multiscapideum P. Delaplane 1965-5-4 54 Butte On S side of Concow Road. South side of Lake Concow. 1219 Comment
  CHSC88607  Erythronium multiscapideum Linnea Hanson 1983-4-6 181 Butte Plumas National Forest. Hwy. 70, behind Cal Trans Maint. Station. 609 Comment
  JEPS119740  Erythronium multiscapideum Lowell Ahart 2012-3-23 17787 Butte 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. Comment
  CAS-BOT-BC504523  Erythronium multiscapideum Elmer I. Applegate 1932-4-12 7041 Butte Wooded botton of the Sacramento River about 2 miles west of Cana, north-west of Butte County Comment
  SEINET8477399  Erythronium multiscapideum M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  UC142902  Eschscholzia caespitosa Mrs. R. M. Austin Apr., 1896 94 Butte Little Chico Creek; bluffs Comment
  CAS-BOT-BC402967  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte Table Mountain Olive Ranch north of Oroville Comment
  CAS-BOT-BC402968  Eschscholzia californica A. A. Heller 1914-4-3 s.n. Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC402971  Eschscholzia californica H. E. Brown 1897-4-15 166 Butte Near Clear Creek Comment
  CHSC3845  Eschscholzia californica L. E. Dunkel 1965-4-15 20 Butte Along Lindo Channel, 300 yds. e of Longfellow Bridge, Chico. 27 Comment
  CAS-BOT-BC402960  Eschscholzia californica John Thomas Howell 1976-4-2 51559 Butte Flood plain of Butte Creek on road from Chico to Paradise 60 Comment
  JEPS115827  Eschscholzia californica subsp. californica Lowell Ahart 2009-4-26 15622 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC1192  Eschscholzia lobbii W. Reed 1942-3-26 Butte Comment
  SBBG17169  Eschscholzia lobbii M. Vincent 1961-3-27 40 Butte Table Mtn, 3 mi E of Cherokee 762 Comment
  UC1111604  Eschscholzia lobbii Herbert L. Mason 1941-4-6 12417 Butte w Cherokee 304 Comment
  JEPS118625  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley. Near edge of water, south side Feather River just east of Bedrock Park, Oroville. Lamoine 7.5 minute quadrangle, 665-2, 1998 Comment
  CHSC46833  Euonymus occidentalis R. A. Schlising; F. J. Fuller 1988-6-17 4543 Butte NE of Brush Creek and Mountain House, at Jordan Creek. 1097 Comment
  JEPS102784  Euonymus occidentalis var. occidentalis Lowell Ahart 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) SE of Stirling City. 609 Comment
  SEINET10453804  Euphorbia glyptosperma Mary Susan Taylor 1980-7-6 Taylor 3056 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC47418  Euphorbia peplus Lowell Ahart 1974-2-12 295 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
  SEINET10841056  Euphorbia serpillifolia Mary Susan Taylor 1978-9-8 Taylor 1887 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC96063  Euthamia occidentalis L. P. Janeway 2006-10-4 8902 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. 32 Comment
  RSA755369  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte On the south edge of a deep large ditch on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 air miles southwest of Gridley. 20 Comment
  SBBG128795  Euthamia occidentalis L. Ahart 2012-10-28 18531 Butte N side of Big Chico Crk, S of Table 34, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  CHSC92550  Festuca californica var. californica L. P. Janeway 2005-4-6 8359 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern non-serpentine spur ridge at south end of Rocky Ridge, about 2.2 km east of north end of Concow Reservoir. 860 Comment
  UC1562328  Festuca elmeri Vernon Oswald and Lowell Ahart 1990-6-27 4325 Butte ca 0.5 mi (air) ne Junction House (site) (Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, e side of Oro-Quincy Hwy) 1109 Comment
  UC1609518  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CAS-BOT-BC77691  Ficus carica John Thomas Howell 1961-9-22 36750 Butte Feather River Highway 3 miles from Oroville Comment
  SEINET10475088  Filago gallica Mary Susan Taylor 1980-5-27 Taylor 2681 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC437081  Fragaria virginiana subsp. platypetala H. F. Copeland 1929-6-10 1206 Butte Jonesville 1524 Comment
  CAS-BOT-BC62950  Frangula californica subsp. tomentella Lewis S. Rose 1968-6-12 68113 Butte Feather River Canyon. Pulga. 487 Comment
  CAS-BOT-BC55648  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  CHSC23678  Fraxinus dipetala M. S. Taylor 1976-4-27 1088 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  SEINET10457424  Fraxinus latifolia Mary Susan Taylor 1974-10-11 Taylor 327 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC35986  Fremontodendron californicum J. D. Jokerst 1982-5-15 1582 Butte Ca 2.5 airline miles SW of Berry Creek, ca 2.0 mi N of Oro-Quincy Hwy on Ponderosa Way. Comment
  CAS-BOT-BC124017  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte Near Durham Comment
  CAS-BOT-BC508149  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  CHSC65585  Galium aparine L. P. Janeway 1995-6-6 4772 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northest of the falls of Feather Falls. 1054 Comment
  HSC32639  Galium aparine R. A. Vanbianchi 1974-4-20 240 Butte Table Mtn. 305 Comment
  SEINET10500623  Galium aparine Mary Susan Taylor 1975-3-25 Taylor 427 Butte Chico. Comment
  JEPS115530  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 273 Comment
  JEPS6576  Galium bolanderi Rimo Bacigalupi with R. Hauke and Geo. Bacigalupi 1954-7-15 4721 Butte along Nimshew rd 1.1 <mi?> below junction with main Magalia-Stirling road (0.3 mi above Nimshew) 792 Comment
  RSA755313  Galium bolanderi L. 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 air mile southwest of the intersection of Highway 32 and Ten Mile House Road., About 10 miles northeast of Chico. 273 Comment
  CHSC48884  Galium divaricatum Vernon Oswald 1985-5-1 1741 Butte Upper Bidwell Park, Chico, at the Police Pistol Range on the S edge of the Golf course. 97 Comment
  CHSC54348  Galium divaricatum Lowell Ahart 1991-5-12 6652 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 48 Comment
  JEPS107756  Galium divaricatum Lowell Ahart 2005-5-11 11797 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  SEINET10968838  Galium divaricatum Mary Susan Taylor 1980-5-24 Taylor 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10500720  Galium grayanum Mary Susan Taylor 1978-7-18 Taylor 1704 A Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  SEINET10968830  Galium nuttallii Mary Susan Taylor 1974-3-3 Taylor 70 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  JEPS127203  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  SEINET10500639  Galium tricornutum Mary Susan Taylor 1981-5-1 Taylor 3584 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC26740  Galium trifidum var. pacificum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1462 Butte Ca. 50 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1828 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
  CHSC30778  Galium triflorum M. S. Taylor 1978-7-19 1740 Butte Cherry Hill Campground on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC643  Garrya fremontii M. Roberson 1956-4-9 Butte SW of Paradise along Skyway 426 Comment
  CHSC95071  Garrya fremontii L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-12 8688 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. Top of the ridge at 'Magalia Serpentine' about 40 m west of Coutelenc Road and 300 m north of Skyway. 713 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
  SEINET5765227  Garrya fremontii J. T. Howell 1975-6-15 51081 Butte 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC40454  Gastridium phleoides Lowell Ahart 1985-6-17 5050 Butte Near the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC91465  Gastridium phleoides Lowell Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  SEINET10559582  Gastridium phleoides A. Arthur Heller 1902-5-15 Heller 5555 Butte Near Biggs. Comment
  JEPS104033  Gastridium ventricosum Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, ca 1 1/2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 45 Comment
  JEPS110117  Gastridium ventricosum Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  UCSC000103  Gastridium ventricosum C. G. Albertus 1933-5-29 s.n. Butte 0.5 mile N. of Wiek - Chico Comment
  UC1609290  Gaultheria ovatifolia Lowell Ahart 1993-8-8 7149 Butte 1/2 mi nw of Lewis Flat (3/4 mi nw of the Sly Creek Dam) 1097 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
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Jun 4 2007
  UC1122566  Gayophytum heterozygum P. L. Johannsen 1936-7-16 920 Butte 1 3/4 mi ese Butte Mdws. (Plot #1); Lassen National Forest, Paynes Creek Quadrangle Comment
  UCD103714  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Jonesville. Comment
  CHSC3487  Genista monspessulana Roger Jaegel 1966-4-20 112 Butte Located on Chico - Paradise road, four miles east of Chico. Comment
  CHSC88166  Gentianopsis simplex Lowell Ahart 2004-8-2 11332 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  RSA4134  Gentianopsis simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. 1500 Comment
  RSA0028179  Geranium carolinianum C. C. Bruce 1897-06 1931 Butte Little Chico. Comment
  CHSC38455  Geranium molle Vernon Oswald 1983-3-31 233 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 Comment
  CHSC99007  Geranium molle Lowell Ahart 2008-5-21 14764 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10496738  Gilia capillaris Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4211 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  RSA469706  Gilia tricolor J. P. Smith, J. O. Sawyer 1973-4-14 6049 Butte Bruce Lane, between Skyway and Humboldt Road east of Chico Comment
  SEINET12326974  Gilia tricolor L. D. Curtis 1982-1 31 Butte 88 Comment
  SEINET10906426  Githopsis pulchella subsp. campestris A. Arthur Heller 1937-5-31 Heller s.n. Butte Comment
  CHSC90983  Githopsis specularioides Lowell Ahart 2005-5-11 11799 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 354 Comment
  HSC43123  Githopsis specularioides Maralyn O'Meara 1974-4-20 276 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  SEINET10464548  Githopsis specularioides Mary Susan Taylor 1980-4-18 Taylor 2526 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  JEPS124255  Glinus lotoides Lowell Ahart 2015-10-26 20592 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  RSA126641  Glyceria striata P. L. Johannsen 1936-7-17 939 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  SEINET10905047  Gnaphalium Mary Susan Taylor 1981-5-6 Taylor 3625 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  SEINET10475276  Gnaphalium beneolens Lowell Ahart 1983-9-17 Ahart 4435 Butte Along edge of dirt road, ca. 2.5 mi s of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CDA34553  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. Comment
  CAS-BOT-BC302473  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CAS-BOT-BC302480  Gnaphalium palustre Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC115367  Gnaphalium palustre Lowell Ahart 2015-4-24 20076 Butte On the sides of a large duck field, 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
  CHSC75960  Gnaphalium palustre Lowell Ahart; Vernon H. Oswald 1999-8-13 8166 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
  JEPS87529  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  SEINET10971220  Gnaphalium palustre Mary Susan Taylor 1980-6-29 Taylor 2990 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC55064  Goodyera oblongifolia Lowell Ahart 1991-9-19 6728 Butte Near where the two branches of Wildcat Creek come together, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  POM180883  Goodyera oblongifolia H. F. Copeland 1924-8-10 857 Butte Jonesville. Comment
  CHSC43159  Gratiola ebracteata R. A> Schlising 1980-4-2 3529 Butte About 7 miles south of Chico along Chico-Oroville Highway, 1.1 mile N of jct with Pentz Road at Hwy 99. Comment
  SEINET10547781  Gratiola ebracteata Mary Susan Taylor 1980-5-31 Taylor 2763 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10547782  Gratiola ebracteata Mary Susan Taylor 1980-4-21 Taylor 2562 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  CHSC33139  Grindelia hirsutula var. davyi J. D. Jokerst 1980-5-28 803 Butte Top of North Table Mountain. Along sides of Cherokee Road on the west 1/2 of the mountain. Comment
  SEINET10497305  Hackelia californica Mary Susan Taylor 1978-9-9 Taylor 1909 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC306291  Hedypnois cretica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC309403  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte Hills 8 miles north of Oroville Comment
  SEINET5554091  Helianthella californica H. S. Gentry 1962-1 19760 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  CHSC34012  Heliotropium curassavicum L. Ahart 1981-7-26 3000 Butte Along edge of the rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC116133  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  UCD34287  Hemizonia congesta subsp. luzulifolia Beecher Crampton 1978-8-21 9661 Butte ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  CDA7022  Hemizonia congesta subsp. luzulifolia T. C. Fuller 1964-10-6 12676 Butte Northwest corner of Hamilton City Road & Highway 99E to Chico, 2 miles north of Biggs. 0 Comment
  RSA4484  Heracleum maximum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  CHSC115296  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-5-5 20145 Butte Dredge tailings on south sides of the road, Oroville Wildlife Area, about 3/4 mile south of the Headquarters, about 3/4 mile south of Thermalito. 39 Comment
  JEPS107420  Hesperevax acaulis var. robustior Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  JEPS104299  Hesperolinon californicum Lowell Ahart 2003-6-18 10289 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CHSC1013  Hesperolinon micranthum V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC47435  Hesperolinon micranthum Lowell Ahart 1979-5-29 1890 Butte About 1/4 mile north of Kunkle Reservoir, west of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  UCD139990  Heteranthera dubia Herbert L. Mason; Verne Grant 1946-8-14 13041 Butte Butte Sink. Comment
  CDA18369  Heteranthera limosa G. D. Barbe 1978-8-14 2438 Butte Biggs Rice Experiment Station. 0 Comment
  CHSC46544  Heteranthera limosa Lowell Ahart 1974-8-29 619 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CDA2652  Heteranthera limosa T. C. Fuller 1976-8-1 20162 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  SEINET10905358  Heteranthera limosa Mary Susan Taylor 1978-7-22 Taylor 1847 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC34816  Heterocodon rariflorum M. S. Taylor 1980-4-27 2548 Butte Ca 1 mi s of Nimshew. ca. 1/4 mi e of Nimshew Rd. 609 Comment
  JEPS94303  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  SEINET10939149  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2684 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET7714837  Heterocodon rariflorum Unknown Butte Chico Comment
  CHSC77444  Heteromeles arbutifolia Laura Bogni 1997-3-25 24 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CHSC113981  Heterotheca grandiflora Lowell Ahart 2014-11-17 19912 Butte Just below the high water line of Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  CHSC27561  Heterotheca grandiflora Robert A. Schlising 1977-9-29 3203 Butte Chico; Hwy over Lindo Channel at margin of Bidwell Park near site of Hooker Oak. Roadside. Comment
  UCD74317  Heterotheca oregona var. compacta Ellen Dean; D. Spencer 2008-12-9 5270 Butte City of Chico. Lindo Channel at the end of Madrone Ave. Comment
  SFV1580  Heuchera micrantha M. L. Vincent 1962-4-18 209 Butte Near Feather River at Hells Town. Comment
  CHSC61013  Heuchera micrantha var. erubescens Lowell Ahart 1993-7-6 7057 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC23417  Hibiscus lasiocarpos var. occidentalis K. Stern 1970-8-1 Butte S. end of Eddy Lake. Rancho Llano Seco. Comment
  CHSC84717  Hieracium albiflorum L. P. Janeway; John Hunt, Adam Henderson 2003-6-3 7802 Butte Northern High Sierra Nevada. Southeast side of Middle Fork Feather River arm of Lake Oroville, 1.6 km southwest of mouth of Bean Creek. 287 Comment
  SEINET10475087  Hieracium albiflorum Mary Susan Taylor 1978-7-18 Taylor 1677 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC33184  Hirschfeldia incana R. E. Preston 1981-5-27 72 Butte On n shoulder of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  JEPS118310  Hoita macrostachya Lowell Ahart 2011-8-17 17631 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  CHSC41363  Hoita orbicularis R. A. Schlising; R. Banchero 1980-7-7 3839 Butte Along logging road E of Village of Feather Falls in E part of county. Near head of Little Buckeye Creek. 998 Comment
  CHSC94342  Holcus lanatus Lowell Ahart 2006-7-25 13056 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC42373  Hordeum marinum subsp. gussoneanum Lowell Ahart 1987-5-6 5563 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC101293  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-17 15562 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
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  CAS-BOT-BC536586  Horkelia californica var. elata Forest Sheehan 1975-7-7 s.n. Butte 2 miles south of Old Yankee Hill. About 1 1/4 miles north-east of the West Branch Bridge, about 16 miles north-east of Oroville. 914 Comment
  CHSC43055  Horkelia fusca subsp. parviflora L. P. Janeway 1987-7-5 2469 Butte At jct of Philbrook Rd and Humbug Summit Rd. Between road and creeklet. 1554 Comment
  JEPS83780  Horkelia fusca subsp. tenella V. Oswald and L. Ahart 1988-7-16 3614 Butte ca 6 air mi se Jonesville; Snow Mt. region, Red Fir Forest 1996 Comment
  CAS-BOT-BC532315  Horkelia fusca var. parviflora Milo S. Baker 1925-9-5 96 a-25 Butte Soda Springs Ranger Station Comment
  CAS-BOT-BC143977  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  RSA126021  Horkelia tridentata E. K. Balls 1957-5-22 22506 Butte Hwy 40 , 18 miles NE from Oroville 701 Comment
  CAS-BOT-BC536251  Horkelia tridentata var. tridentata H. F. Copeland 1920-7-11 53 Butte By Butte Creek 1828 Comment
  CAS-BOT-BC536261  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  JEPS124302  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  UC1532351  Hydrocotyle verticillata Vernon Oswald 1986-6-11 2110 Butte just e. of Diversion Dam (Upper Bidwell Park, on s. side of Upper Park Rd., Chico); Chico, Upper Bidwell Park 134 Comment
  CHSC38062  Hypericum anagalloides R. E. Preston 1982-6-23 308 Butte In meadow at edge of stream, Deadwood Creek at Dixie Valley Road. 999 Comment
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  RSA754879  Hypericum androsaemum L. Ahart 2009-6-18 15992 Butte Meadow on the E side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 236 Comment
  CHSC92048  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CAS-BOT-BC401219  Hypericum perforatum A. A. Heller 1914-7-13 11570 Butte Mt. Ida Ranch, about 5 to 10 miles east of Oroville Comment
  SEINET10472151  Hypericum perforatum Mary Susan Taylor 1975-6-25 Taylor 792 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CHSC6004  Ilex M. MacArthur 1968-6-19 248 Butte Main entrance to Auditorium, Chico State College. 60 Comment
  POM169076  Iris hartwegii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET263499  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte Ca. 15 miles E of Chico at jct of Hwy 32 and Sugar Pine Place 1000 Comment
  CHSC24886  Iris macrosiphon W. A. Vaccaro 1976-4-17 2 Butte Pop. ca. 2.4 mi. E. of Centerville on So. side of Humbug Rd. 128 Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  UC600578  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte neighborhood of Jonesville 1828 Comment
  CAS-BOT-BC69902  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte E. of North Honcut Creek, on the Joie Osgood Ranch, about 1.5 mi. n. and 3 mi. e. of Honcut, about 12 mi. se. of 60 Comment
  CHSC71271  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte About 1/4 miles north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC113230  Isoetes nuttallii Lowell Ahart 2014-5-2 19426 A Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  UCD135924  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte In Valley Grassland, just E of Chico, NE corner of jct of Notre Dame Blvd and the Skyway. 68 Comment
  CHSC45120  Isolepis setacea V. Oswald; L. Ahart 1988-6-17 3405 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1066 Comment
  CHSC78322  Isolepis setacea Lowell Ahart 2000-7-7 8557 Butte Small seep just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  UC480847  Isopyrum occidentale Mrs. R. M. Austin May 1896 Butte Little Chico Canyon Comment
  CAS-BOT-BC340243  Jensia rammii Lewis S. Rose 1937-6-10 37357 Butte Hurleton 579 Comment
  RSA299477  Juglans hindsii J. P. Smith, J. O. Sawyer 1973-4-14 6062 Butte Rock Road 1 mile west of Cohasset Road near Chico Comment
  CHSC96973  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
  CHSC38924  Juncus balticus subsp. ater Vernon Oswald 1983-5-18 507 Butte Upper Bidwell Park, Chico, 75 ft s of Upper Park Rd. and 200 ft e of Parking Area I (0.6 mi e of the power lines). In a drainage ditch. 103 Comment
  CHSC61516  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte Large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC96541  Juncus bufonius var. bufonius Lowell Ahart 2007-5-22 13897 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  JEPS114371  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville 223 Comment
  JEPS120619  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC112909  Juncus capitatus B. Castro; Robin Carter 2011-4-29 1871 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC47543  Juncus capitatus Lowell Ahart 1983-5-12 3979 Butte Small vernal pools, near the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  CHSC6157  Juncus capitatus E. Parreno 1968-4-19 67 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  JEPS103414  Juncus capitatus Lowell Ahart 2002-4-24 9535 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  JEPS105998  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito 48 Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  RSA0036992  Juncus cyperoides Lowell A. Ahart 2013-7-1 18820 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC28546  Juncus effusus subsp. pacificus M. S. Taylor 1978-7-18 1721 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, sw of Jonesville. 1524 Comment
  CHSC39587  Juncus effusus subsp. pacificus Lowell Ahart 1983-7-24 4202 Butte Found along the edge of the dirt road, about 2 miles south-west of the Forbestown Res., about 3 miles north-east of Forbestown. 550 Comment
  CHSC84202  Juncus effusus subsp. pacificus Lowell Ahart 2003-6-30 10335 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  JEPS113832  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  RSA755033  Juncus effusus var. pacificus L. Ahart 2009-6-30 15980 Butte Along a small flowing stream about 55 yards SE of the gate, about 45 yards E of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 270 Comment
  CHSC99313  Juncus ensifolius Lowell Ahart 2008-5-30 14801 Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  POM183191  Juncus ensifolius H. F. Copeland 1930-7-25 1357 Butte Jonesville. 1524 Comment
  RSA742781  Juncus ensifolius L. Ahart 2008-7-23 15142 Butte About 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
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Feb 2 2010
  CHSC44246  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1988-7-13 3587 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC61520  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-6-20 6974 Butte Tracks of a logging Road, about 1/2v mile south of Quartz Hill. 1219 Comment
  CHSC96955  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 762 Comment
  RSA712644  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. 969 Comment
  SEINET10472451  Juncus leiospermus Mary Susan Taylor 1980-5-15 Taylor 2630 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET10472452  Juncus leiospermus Lowell Ahart 1984-4-6 Ahart 4543 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, ca. 2 miles S of Paradise, east side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC93377  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12539 Butte In a vernal pool, about 40 yards northeast of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 50 Comment
  CHSC83897  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10093 Butte High water line of the vernal pool, about 70-100 feet southwest of the section corner pipe, about 1/8 mile southwest of the tall Digger Pine on the south edge of Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 299 Comment
  JEPS104275  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10036 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 344 Comment
  JEPS117321  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-16 16682 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 375 Comment
  JEPS122233  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. Comment
  CAS-BOT-BC110772  Juncus mertensianus Lowell Ahart 1984-7-19 4755 Butte About 0.5 mile east of Bald Mountain, about 5 miles northeast of Stirling City. 1750 Comment
  CHSC31927  Juncus nevadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 846 Butte Chico Meadows, 1.1 mi N of Humboldt Rd adjacent to Scout Rd., community of Butte Meadows. 1341 Comment
  UC600813  Juncus parryi H. F. Copeland 1930-7-12 Butte above Butte Creek House; Jonesville Comment
  SEINET10472460  Juncus phaeocephalus Mary Susan Taylor 1978-9-8 Taylor 1891 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  UCD141879  Juncus phaeocephalus var. paniculatus J. W. Jones 1922-7-1 s.n. Butte Rice Station, Biggs. Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 Comment
  CHSC80894  Juncus tenuis Lowell Ahart 2001-7-6 8885 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
  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
  UC1543891  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC97263  Juncus usitatus Lowell Ahart 2007-8-19 14493 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS113761  Juncus usitatus Lowell Ahart 2007-7-31 14400 Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville 34 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  CAS-BOT-BC80921  Juniperus californica Arthur Menzies 1969-8-1 s.n. Butte Near Gillem's Bluff, Little Butte Creek, Nelson West Rd & Chico-Butte City Hwy. Comment
  SEINET194312  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Near rd above a mi from jct w/ Oroville Rd 137 Comment
  RSA34926  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  CAS-BOT-BC235679  Keckiella breviflora var. glabrisepala Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CHSC29800  Keckiella breviflora var. glabrisepala M. S. Taylor; J. Jokerst 1980-6-14 2883 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork of Feather River, ca. 7 mi s of Lake Madrone. 457 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
  UCSB63914  Kelloggia galioides Ahart, Lowell 1997-8-1 Butte T24N, R5E, northwest 1/4 Section 18; , on the 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; Yellow Pine Forest 1432 Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC46287  Kochia scoparia Vernon Oswald 1989-5-15 3768 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On the ranch road just s of the lighted parking area near the south gate. 18 Comment
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC31709  Koeleria phleoides Lowell Ahart 1974-4-14 412 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC340333  Kyhosia bolanderi H. F. Copeland 1920-8-1 191 Butte Jonesville 1219 Comment
  OBI4692  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte 282 Chico Rd, Oroville Comment
  CAS-BOT-BC274279  Lachnagrostis filiformis Lowell Ahart 1986-11-14 5468 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
  CHSC43002  Lactuca saligna Lowell Ahart 1987-7-17 5830 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC340449  Lactuca saligna John Thomas Howell 1959-9-20 34704 Butte Feather River Highway at West Branch bridge Comment
  UCD133505  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  SFV4001  Lagophylla glandulosa M. L. Vincent 1960-9-7 112 Butte Sierra Nevada On dry bluff overlooking Butte Creek Canyon. 3 miles west of Paradise on the Skyway. 215 Comment
  UC726005  Lagophylla glandulosa A. A. Heller 1941-11-8 16336 Butte along Feather River Highway about 20 mi e Oroville (just w of Jarboe Pass on roadside banks) Comment
  CAS-BOT-BC341298  Lagophylla glandulosa David D. Keck 1930-7-25 977 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC11371  Lamium amplexicaule Lowell Ahart 1962-3-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM55149  Lasthenia californica A. A. Heller, H. E. Brown 1902-5-5 5450 Butte Near Chico Comment
  CHSC10647  Lasthenia fremontii Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CDA34700  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 miles (air) northeast of Oroville. Comment
  CHSC29994  Lathyrus angulatus L. Ahart 1980-4-28 2111 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC213337  Lathyrus jepsonii subsp. californicus Peter H. Raven 1953-5-9 5426 Butte 8 miles from Bangor on Oroville Road Comment
  JEPS117534  Lathyrus latifolius Lowell Ahart 2010-6-12 16791 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico 332 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
  UC478504  Lathyrus nevadensis var. nevadensis E. B. Copeland 1931-6-10 310 Butte Jonesville 1500 Comment
  UC726399  Lathyrus nevadensis var. nevadensis A. A. Heller 1919-5-17 13162 Butte near Stirling; Feather River Comment
  RSA726479  Lathyrus sphaericus L. Ahart 2007-4-30 13698 Butte About 1.5 miles northwest of Concow Creek, about 1.5 miles west of Concow Reservoir. 358 Comment
  SBBG121311  Lathyrus sphaericus L. Ahart 2007-4-30 13698 Butte Jordan Hill Rd, ca. 1.5 mi NW of Concow Crk, ca. 1.5 mi W of Concow Reservoir 358 Comment
  JEPS102569  Lavatera cretica Lowell Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 1/4 miles (air) NW of Honcut, about 1 mile south of Oroville. 29 Comment
  CHSC101983  Layia fremontii Carl W. Hill 1980-4-12 8 Butte Ca. 0.5 mi E of intersection of hwy and Skyway, 2 mi SE of Chico, on N side of Skyway. 67 Comment
  CHSC3471  Layia fremontii Roger Jaegel 1966-3-21 64 Butte Located six miles southeast of Chico two miles east of Highway 99 on Pentz Road. Comment
  CHSC75252  Layia fremontii Jennifer Slater 1997-4-6 7 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 60 Comment
  SEINET10474770  Layia fremontii Mary Susan Taylor 1980-3-28 Taylor 2409 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  SEINET10839204  Layia fremontii Mary Susan Taylor 1976-3-6 Taylor 1017 Butte Valley Grassland on Table Mountain, ca. 100 m W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  UCD63609  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs. Comment
  RSA719538  Lepechinia calycina Michael A. Vincent 2006-7-29 12881 Butte East of Chico along Rt. 32. Comment
  CHSC65989  Lepidium didymum Vernon H. Oswald 1996-5-9 7548 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee at the SW corner of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CAS-BOT-BC89879  Lepidium nitidum A. A. Heller 1919-3-29 13096 Butte Cherokee mine. Comment
  CAS-BOT-BC89881  Lepidium nitidum Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC35641  Lepidium strictum R. E. Preston 1982-4-7 225 Butte At edge of almond orchard; nw corner jct of Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  CHSC38057  Lepidium strictum R. E. Preston 1983-5-26 386 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 Comment
  UC600713  Lepidium virginicum H. F. Copeland 1930-7-18 1333 Butte Jonesville 1524 Comment
  UCR148775  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise 335 Comment
  UC569494  Leptochloa fascicularis H. S. Yates 1936-8-14 6121 Butte 3 mi nnw Nelson; Chico Quadrangle 30 Comment
  CAS-BOT-BC273947  Leptochloa fusca subsp. fascicularis Lowell Ahart 1986-11-9 5456 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CAS-BOT-BC273948  Leptochloa fusca subsp. fascicularis Lowell Ahart 1983-10-11 3858 Butte West of the check-in station, Gray Lodge, about 12 mi. SW of Gridley 35 Comment
  CAS-BOT-BC273950  Leptochloa fusca subsp. fascicularis Herbert L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC34196  Leptochloa fusca subsp. fascicularis J. D. Jokerst; L. Ahart 1981-9-26 1496 Butte Ca 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CAS-BOT-BC226525  Leptosiphon acicularis Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC29230  Leptosiphon bicolor M. S. Taylor 1980-4-16 2491 Butte Lake Oroville State Recreation Area, Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC38595  Leptosiphon bicolor Vernon Oswald 1983-4-6 288 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and S). 256 Comment
  CHSC90798  Leptosiphon ciliatus Lowell Ahart 2005-5-2 11765 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  JEPS119765  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  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
  CHSC101307  Leptosiphon filipes Lowell Ahart 2009-4-22 15586 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
  CHSC58937  Leptosiphon harknessii Lowell Ahart 1992-7-29 6887 Butte Near Coon Hollow Creek, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC3523  Leptosiphon parviflorus John Francis 1966-4-23 128 Butte In pasture, Table Mt. Comment
  UCD134085  Lessingia nana P. B. Kennedy 1927-6-1 s.n. Butte Gridley. Comment
  CHSC30399  Lessingia nemaclada Diane H. Ikeda 1979-9-29 162 Butte Ca. 3.1 mi from the first crossing of Feather River with Hwy. 70 on Hwy. 70, just before the Plumas National Forest boundary. Comment
  OBI15788  Lessingia nemaclada Robert F. Hoover 1965-10-16 9720 Butte Deer Crk rd E of Chico Comment
  SEINET10474777  Lessingia nemaclada Mary Susan Taylor 1981-7-10 Taylor 4062 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  SEINET10474778  Lessingia nemaclada Mary Susan Taylor 1979-6-22 Taylor 2170 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  UC178839  Lessingia nemaclada Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC444184  Lewisia nevadensis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC27244  Ligustrum henryi P. Moyer 1972-5-7 193 Butte CSUC Campus. Front old L.S. Bldg. between bike path and bike parking. 60 Comment
  CHSC43073  Lilium humboldtii R. A. Schlising; Diane Ikeda 1987-6-12 4512 Butte S of Cohasset, along Cohasset Rd. ... Field redacted by CHSC, contact the data manager for more information 457 Comment
  UC600465  Lilium washingtonianum subsp. washingtonianum E. B. Copeland Jul 1930 Butte Jonesville 1600 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
  POM253064  Limnanthes douglasii A. A. Heller 1938-4-14 15033 Butte On the flatened treeless surface of Table Mountain. Upper Sonoran Life Zone. 610 Comment
  UCD116440  Limnanthes floccosa Jeff Dole 1988-3-28 s.n. Butte south of Chico airport. Comment
  JEPS107972  Limnophila X ludoviciana Lowell Ahart 2005-9-13 12368 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. Comment
  CHSC46298  Limosella acaulis Vernon Oswald 1989-5-30 3790 Butte Sheep Camp Ditch and Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. 54 Comment
  CHSC42871  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10496789  Linanthus bicolor Mary Susan Taylor 1980-4-16 Taylor 2491 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  UC718541  Linanthus bolanderi Carl B. Wolf 1937-3-29 Butte 7.8 mi below Paradise (on Chico Road); Sierra Nevada Foothills 152 Comment
  UC124911  Linanthus dichotomus Mrs. R. M. Austin May 1883 32 Butte Comment
  POM73994  Linanthus dichotomus subsp. meridianus C. C. Bruce 1897-04 1967 Butte Near Deadwood Comment
  JEPS48319  Linanthus filipes Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2687 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  SEINET9369866  Linanthus filipes Unknown 1996-7-9 13171 Butte Plumas National Forest Comment
  UC196264  Linanthus harknessii A. A. Heller 1914-8-8 11671 Butte Jonesville 1524 Comment
  CHSC35091  Linanthus pungens R. A. Schlising; R. Banchero 1980-7-28 3930 Butte E of Jonesville, on road toward Scotts John Creek. 1889 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  CHSC64017  Lindernia dubia var. anagallidea B. Castro 1987-8-29 214 Butte At S edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 miles E of Hwy 99 bridge. 60 Comment
  JEPS104373  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC33338  Linnaea borealis var. longiflora R. Banchero; R. Schlising 1980-6-23 263 Butte 1.6 mi SW of Sly Res., 1.8 mi N of the jct of Laporte Rd and 'Eagle Gulch Rd. 1066 Comment
  CHSC40917  Linum bienne Lowell Ahart; John Thomas Howell 1980-4-30 2130 Butte Along the edge of Swedes Flat Road, about 2 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CHSC85004  Lipocarpha micrantha L. P. Janeway 2003-9-3 7974 Butte Northern High Sierra Nevada. A little below high water line on north side of South Fork Feather River arm of Lake Oroville, about 35 m west of the Enterprise Boat Ramp, about 1.6 km west-northwest of the north end of Enterprise Bridge. 268 Comment
  CHSC20125  Liquidambar styraciflua M. S. Taylor 1975-5-6 563 Butte California State University, Chico, ca. 3 ft se of Little Cafeteria. 60 Comment
  CHSC68910  Listera convallarioides Lowell Ahart 1997-7-11 7745 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC20094  Lithocarpus densiflorus M. S. Taylor 1975-2-23 391 Butte Ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way andRoad 19N19. 701 Comment
  CHSC45969  Lithophragma bolanderi Lowell Ahart 1974-4-7 355 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC430878  Lithophragma bolanderi Lowell Ahart 1987-12-5 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CHSC4085  Lithophragma parviflorum J. E. Bowlin 1967-4-14 22 Butte Near the railroad tracks, ca. 30 feet from Skyway and ca. 1.8 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  JEPS47686  Lithophragma parviflorum var. trifoliatum Mrs. R. M. Austin and Bruce March 1898 1844 Butte Comment
  CAS-BOT-BC316347  Lithospermum californicum A. A. Heller 1918-5-5 s.n. Butte Near Magalia. Comment
  CHSC32647  Lithospermum californicum M. S. Taylor; L. Hanson 1981-3-16 3403 Butte Just off tractor-fire road, ca. 1/4 mi n of 21N80, ca. 1/2 mi nw of its jct with Zink Rd, ca. 2 air mi sw of Brush Creek. 944 Comment
  UC129441  Lithospermum californicum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC50645  Logfia filaginoides Lowell Ahart 1990-5-25 6480 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 271 Comment
  CHSC108787  Logfia gallica L. P. Janeway 2011-4-26 10239 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). 59 Comment
  CHSC26785  Logfia gallica M. S. Taylor 1978-5-6 1591 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  HSC38061  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-10 2468 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CHSC4351  Lolium multiflorum M. Hillier 1966-5-30 Butte NW side of CSC gym in large field by ski jump, Chico. Comment
  SEINET10592064  Lolium temulentum A. Arthur Heller 1914-6-2 Heller 11475 Butte Hills 8 miles north of Oroville. Comment
  CHSC93478  Lomatium caruifolium var. denticulatum Lowell Ahart 2006-5-3 12562 Butte Grassy area, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 391 Comment
  CHSC29765  Lomatium dasycarpum subsp. tomentosum M. S. Taylor 1980-5-24 2742 Butte Along Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42613  Lomatium macrocarpum Vernon Oswald 1985-4-16 1720 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course. Comment
  POM78413  Lomatium macrocarpum C. C. Bruce 2056 Butte Foothills Comment
  CHSC33142  Lomatium marginatum J. D. Jokerst 1981-5-14 1321 Butte Top of North Table Mt, ca. 300 M north of Cherokee Rd at the west edge of the mountain. Comment
  JEPS110244  Lomatium marginatum var. marginatum Lowell Ahart 2006-5-8 12606 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  JEPS14508  Lomatium marginatum var. marginatum Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5612 Butte 0.7 mi S of Oregon City (along Oregon gulch road) Comment
  CHSC29999  Lomatium utriculatum L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC31066  Lomatium utriculatum M. S. Taylor 1979-6-12 2302 Butte Between Magalia serpentine and Feather River, ca. 1/4 mi down a dirt rd from Jct of Coutelenc Rd and the Skyway. 670 Comment
  CHSC59296  Lomatium utriculatum J. L. Guardino 1992-4-18 13 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  LA205972  Lonicera conjugialis E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 Comment
  CAS-BOT-BC240691  Lonicera interrupta A. A. Heller 1914-5-18 11408 Butte Collected near Hog Spring on the Chico-Butte Meadow road. Between Chico and Forest Ranch, 8 miles from Chico Comment
  RSA592528  Lonicera interrupta S. O. Mattoon 1970-6-12 19 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC116219  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC200  Lonicera involucrata var. involucrata E. Walker 1932-4-19 Butte Concow reservoir. Comment
  CHSC3213  Lonicera japonica Susan Carrauthers 1966-5-9 149 Butte Next to foot bridge near Physical and Life Science building, Chico State College. Comment
  CAS-BOT-BC200897  Lotus John Thomas Howell 1976-4-1 51523 Butte Table Mountain, 4 to 5 miles north of Oroville Comment
  SEINET10451958  Lotus argophyllus var. fremontii Mary Susan Taylor 1980-5-27 Taylor 2665 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  JEPS88599  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1996-5-27 7671 Butte U.S. Fish and Wildlife Service parcel betw Seven Mile Lane and Sacramento River (in the s paddock of Tract 7, Santuary II, Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  SEINET12161433  Lotus humistratus K. D. Johnson 1978-1 12 Butte E side of Cohasset rd, .3miE of Chico Municipal Airport Control Tower. see below 77 Comment
  UC1562361  Lotus nevadensis var. nevadensis Vernon Oswald and Lowell Ahart 1990-7-5 4349 Butte just w Scout Rd. (on the n side of Humboldt Rd, n edge of Butte Meadows); Butte Meadows 1325 Comment
  SEINET2062315 Image available Lotus oblongifolius Marc Mittleman 1980-8-1 226 Butte Little Chico Creek adjacent to china Garden Springs. 262 Comment
  SEINET10940036  Lotus oblongifolius Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1395 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  UC600399  Lotus oblongifolius var. oblongifolius H. F. Copeland 1930-7-21 1315 Butte Butte Creek Jonesville 1524 Comment
  UC1594550  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  UC1609058  Lotus stipularis var. ottleyi Lowell Ahart 1993-6-16 6066 Butte about 3.5 air mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC42708  Ludwigia palustris Lowell Ahart 1987-6-9 5732 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
  UC1562387  Ludwigia palustris Lowell Ahart 1990-7-15 6565 Butte e. of Enterprise Boat Launch Area Lake Oroville (ca. 1/4 mi. n.w. of Enterprise Bridge across Lake Oroville) 243 Comment
  JEPS95927  Ludwigia peploides subsp. montevidensis Lowell Ahart 1999-8-13 8172 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
  UC726093  Lupinus A. A. Heller 1928-6-28 14671 Butte Butte Meadows Comment
  SEINET10870942  Lupinus albicaulis Mary Susan Taylor 1982-6-24 Taylor 4747 Butte T22n,r4e,sec.1 se 1/4 se 1/4. Pulga quad. On serpentine on rocky ridge, both Side of ponderosa way (rim road), 6.1 miles n of jarbo gap on hwy 70. With Pteridium aquilinum, calocedrus decurrens 823 Comment
  CHSC25007  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  RSA0036363  Lupinus albifrons Daisie Huang 2006-8-3 06080305 Butte Butte. 1124 Comment
  CDA38768  Lupinus albifrons var. albifrons L. Ahart 2012-4-2 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC93080  Lupinus albifrons var. albifrons L. P. Janeway; B. Castro 1994-4-21 4644 Butte Northern High Sierra Nevada. At end of south-trending spur ridge at western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome. 1051 Comment
  SEINET5766820 Image available Lupinus albifrons var. eminens A. A. Heller 1913-1 10764 Butte 8 mi N of Oroville 183 Comment
  CHSC31938  Lupinus arbustus J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1031 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit adjacent to large mudlflow, northern most portion of county. 1828 Comment
  RSA699513  Lupinus arbustus Paul Maslin 2004-4-21 26 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  SD120620  Lupinus bicolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-7 3306 Butte North Table Mountain ca. 5 airmiles north of Oroville, flat-topped basalt butte near parking area, grassy area on dry shallow soil 395 Comment
  SEINET5328105  Lupinus bicolor B. Ertter, J. L. Strachan, L. Ahart 1980-5-7 3306 Butte North Table Mountain ca 5 air-miles north of Oroville. T20N R4E S17SE1/4 396 Comment
  UCD107191  Lupinus bicolor A. A. Heller 1914-2-2 11166 Butte Canon hf Big Chico creek 6 miles east of Chico. Comment
  JEPS124189  Lupinus bicolor var. tridentatus Lowell Ahart 2015-3-24 19961 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  SEINET10452086  Lupinus latifolius Lowell Ahart 1984-6-8 Ahart 4665 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC725984  Lupinus latifolius var. columbianus A. A. Heller 1919-6-7 13224 Butte Snow Mountain Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  RSA0072103  Lupinus nanus Daisie Huang 2006-4-15 06041567 Butte Upper Bidwell Park, Horseshoe Lake. 114 Comment
  UCD69696  Lupinus nanus Ellen Hammond 1982-4-18 17 Butte Top of Table Mountain, along parking area. 396 Comment
  UC726774  Lupinus nanus A. A. Heller 1938-4-23 15046 Butte along the Feather River Highway near the bridge over the <Feather> River e Oroville; along the Feather River Highway nr bridge over river Comment
  SEINET11072119 Image available Lupinus nanus subsp. menkerae H. E. Brown 1897-1 155 Butte Near Clear Creek Comment
  UCD109333  Lupinus pachylobus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  JEPS108777  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  POM276432  Lupinus sellulus subsp. sellulus Lyman D. Benson 1932-7-28 3976 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  RSA0060489  Luzula macrantha Peter F. Zika 2011-7-6 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Lost Creek Reservoir. 1020 Comment
  CHSC48485  Lycopus americanus Vernon Oswald 1983-10-10 1064 Butte Growing on the e bank of Pine Creek just s of the Calif. Hwy. 32 bridge. Comment
  CHSC116744  Lythrum hyssopifolia Lowell Ahart 2016-5-24 20861 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC62120  Lythrum hyssopifolia B. Castro 1987-5-28 125 Butte Ca 2 mi NW of Oroville via Hwy 70 on E side of Table Mtn Blvd, at SE end of curve in road, by seep just downslope from railroad embankment. 97 Comment
  JEPS95938  Lythrum hyssopifolia Lowell Ahart 1999-8-13 8169 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
  SEINET7073010  Lythrum hyssopifolia A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  SFV10919  Lythrum hyssopifolia M. L. Vincent 1963-6-9 413 Butte Sierra Nevada De Mille Road, south of Paradise. 520 Comment
  CDA18068  Lythrum salicaria B. Villegas 1999-7-1 s.n. Butte W side of Hwy 70 at Oroville. 0 Comment
  CDA18880  Lythrum salicaria Riley, Villegas 2000-5-24 PDR 1170754 Butte Vicinity of Wyman Ravine, on the westside and eastside of Lincoln Blvd. 0 Comment
  JEPS94571 Image available Lythrum salicaria Lowell Ahart 1997-6-29 7742 Butte Wyman Ravine; s side, on w side of Lone Tree Rd., about 6 mi s of Oroville 36 Comment
  CDA5124  Lythrum salicaria L. Ahart 2000-7-2 8551 Butte On the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. Comment
  SEINET10452850  Lythrum tribracteatum Lowell Ahart 1991-5-20 Ahart 6655 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  CHSC379  Madia elegans subsp. vernalis B. Richardson 1929-4-21 Butte Plains around Chico. Comment
  CHSC65540  Madia exigua L. P. Janeway 1995-6-19 4796 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  JEPS124120  Madia exigua Lowell Ahart 2015-6-6 20201 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10971119  Madia exigua Lowell Ahart 1984-6-8 Ahart 4666 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CAS-BOT-BC342969  Madia gracilis John Thomas Howell 1962-6-15 37479 Butte Magalia 731 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  CAS-BOT-BC342959  Madia gracilis A. A. Heller No date on label 12816 Butte Butte Meadows 1402 Comment
  SEINET10474826  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2669 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  UC179652  Madia sativa subsp. dissitiflora A. A. Heller 1914-8-6 11643 Butte Chico meadows 1219 Comment
  SEINET10899356  Mahonia dictyota Mary Susan Taylor 1981-4-10 Taylor 3525 Butte T22N R4E sw sec 12, Pulga SW quad. 8 side of private rd. ca. 1/8 mi E of 4 mi N of Jarbo Gap on Hwy 70, ca. 19 air mi N of Oroville. Yellow Pine Forest; 3000 ft. 914 Comment
  JEPS106172  Malacothrix floccifera Lowell Ahart 2004-6-22 11113 Butte Road cut, on the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  SD122591  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, 2.0 miles northwest of Forbestown. 370 Comment
  CHSC115438  Marah fabacea Ariana Gehrig 2013-3-10 Butte City of Chico. Big Chico Creek at Rio C hico Way. Along pathway. 64 Comment
  CHSC26878  Marah watsonii Robert A. Schlising 1963-5-4 2566 Butte Roadside near Cohasset. 426 Comment
  CHSC30818  Marah watsonii M. S. Taylor; J. D. Jokerst 1980-4-18 2525 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC51058  Marah watsonii Pauleen Broyles 1987-4-29 1014 Butte The Nature Conservancy Vina Plains Preserve. Comment
  CHSC38473  Marrubium vulgare Vernon Oswald 1983-5-2 420 Butte Upper Bidwell Park, Chico, along the s edge of the Golf Course. 91 Comment
  CHSC82398  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte On the bottom and sides of a pond, about 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC389  Matricaria discoidea B. Richardson 1929-4-16 Butte CSC Campus. 54 Comment
  CAS-BOT-BC348265  Matricaria occidentalis M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4359 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  CAS-BOT-BC422645  Meconella californica A. A. Heller 1921-3-27 13535 Butte Near the Butte Creek bridge on the Honey Run road. Comment
  SEINET10476232  Meconella californica Mary Susan Taylor 1980-4-6 Taylor 2459 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  UC50164  Meconella californica Mrs. R. M. Austin and Bruce 1898-3-1 2018 Butte Little Chico Comment
  CHSC38517  Medicago polymorpha Vernon Oswald 1983-4-4 261 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.0 mi e of the power lines. 335 Comment
  CHSC944  Medicago polymorpha E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  JEPS107779  Medicago praecox Lowell Ahart 2005-5-2 11779 -A 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
  CHSC46606  Melica aristata V. Oswald; L. Ahart 1989-7-12 3843 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  CHSC46883  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi s of Lomo (2.3 mi s of ford over Cedar Creek). 1219 Comment
  UC398887  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  UCD86257  Melica aristata G. F. Hrusa; T. D. Wilfred 1996-7-9 13103 Butte Plumas National Forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. 800 Comment
  SEINET10599298  Melica aristata Edwin B. Copel 1929-7-18 Copeland 337 Butte Jonesville. In open pine and fir woods. 1550 Comment
  CHSC31704  Melica californica L. Ahart 1978-5-16 1732 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UCD87025  Melica californica August L. Hormay 1928-6-6 s.n. Butte Campbellville, East of Chico. Comment
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Feb 18 2013
  CHSC31939  Melica fugax J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1044 Butte Top of Humboldt Peak, ca. 400 met NE of the summit along the edge of a hogback, northernmost portion of Butte County. 2133 Comment
  CDA15361  Melica harfordii G. F. Hrusa 1997-5-29 13809 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Scattered in dry, deep shade of coniferous forest. Perennial. Comment
  CHSC107923  Melica harfordii L. P. Janeway 2011-7-21 10519 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cut-banks. 1067 Comment
  UCR115105  Melica harfordii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CHSC93734  Melica torreyana Lowell Ahart 2006-5-19 12632 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  SEINET10599680  Melica torreyana Vernon H. Oswald, Lowell Ahart 1991-5-13 Oswald 4584 Butte Dan Beebe in Lake Oroville Recreation Area, between Canyon Drive & Oroville Dam Blvd East (opposite the spillway). Locally abundant perennial on shaded, brushy slopes in oak woodland. 171 Comment
  CDA38796  Melilotus albus L. Ahart 2012-6-28 18243 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS119619  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte About 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  HSC100741  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd., Upper Bidwell Park, ~3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  CHSC20720  Mentha canadensis M. S. Taylor 1975-8-31 885 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  JEPS98512  Mentha pulegium Lowell Ahart 2000-7-17 8593 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  RSA4233  Mentzelia dispersa E. B. Copeland 1929-7-19 s.n. Butte Jonesville. Along Butte Creek. 473 Comment
  CHSC52135  Micranthes bryophora L. P. Janeway; R. A. Schlising 1988-7-22 3060 Butte Shaded flat in woods on the SW slope of upper Coon Hollow. 1859 Comment
  CHSC33690  Micranthes californica L. Ahart 1981-3-29 2715 Butte Along edge of Ponderosa Way, ca. 1/8 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC108867  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte Near large rocks, on the west side of South Rim Trail, about 1/2 miles southwest of the old homestead, pond and Ten Mile House Road, about 3/4 miles west of Highway 32, about 8 miles northeast of Chico. 255 Comment
  CHSC30372  Micranthes integrifolia J. D. Jokerst 1979-3-5 1138 Butte Top of North Table Mt., 300 m NW of the intersection of Cherokee Rd and the E edge of section 17. Comment
  CHSC33397  Micranthes integrifolia Lynette Wood 1979-3-6 Butte N side of Skyway (road Chico-Paradise), ca. 550 ft. out along canyon edge. 243 Comment
  CHSC34531  Micranthes integrifolia R. E. Preston 1982-2-18 168 Butte Bank on s side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 182 Comment
  CHSC44352  Micranthes nidifica Lowell Ahart 1988-3-28 5949 Butte Along a small stream, about 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC101220  Micropus californicus var. californicus G. F. Hrusa; R. Gross, L. Houser 2008-4-11 17094 Butte Open, chaparral slopes with woodland on N faces immediately below Indian Valley Reservoir spillway into North Fork Cache Creek tailrace. 396 Comment
  UC831274  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 mi n Oroville Comment
  CAS-BOT-BC348466  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte Hills 8 miles north of Oroville Comment
  UCD80103  Microseris acuminata CNPS SN Foothill Team 2005-4-15 SNFN 0081 b Butte City of Chico, Doe Mill Meadowfoam Preserve, ~50 m from the western boundary and ~70 m from the northern boundary. 85 Comment
  CAS-BOT-BC348693  Microseris acuminata K. L. Chambers 1952-5-16 405 Butte Hwy. 24, 7.8 mi. s. of center of Oroville Comment
  CHSC20962  Microsteris gracilis M. S. Taylor 1974-3-5 78 Butte On old dirt road parallel to Cohasset Road, near entrance to Seven-toed Pete's Wildlife Reserve, ca. 6 mi n of Chico. Comment
  HSC43116  Mimulus angustatus Maralyn O'Meara 1974-4-20 283 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  UCD22551  Mimulus aurantiacus James I. Mallory 1970-5-26 374 Butte T22N R3E Sect. 3 426 Comment
  JEPS108855  Mimulus aurantiacus subsp. aurantiacus Lowell Ahart 2006-5-10 12617 Butte Road cut bank, on the N side of the poor dirt road, Bardees Bar Road, about 100 yars N of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) SW of Pulga. 354 Comment
  RSA149055  Mimulus aurantiacus var. grandiflorus Dorothy Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dan Power Station n Feather river, along U.S. Hwy Alternate 40 Comment
  SEINET10570193  Mimulus bicolor Mary Susan Taylor 1978-7-18 Taylor 1683 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
  RSA796039  Mimulus bifidus subsp. bifidus L. Ahart 2012-6-2 18128 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. 287 Comment
  JEPS121953  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  UC1594698  Mimulus breweri Lowell Ahart 1992-7-21 6802 Butte about 2 air mi ne Philbrook Reservoir (s side of hollow); Coon Hollow 1737 Comment
  JEPS10250  Mimulus cardinalis H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  UCD122531  Mimulus constrictus P. Thompson 1996-4-26 39 Butte Hwy 70. Belden. Along the south entrance to the Pacific Crest Trail. 1000 Comment
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Feb 25 2013
  RSA535825  Mimulus douglasii David M. Thompson, L. Ahart 1988-3-22 850 Butte N of Honcut. Peter Ahart Ranch, entrance 1.2 mi N of Honcut store along Ahart Road. 38 Comment
  OBI9444  Mimulus glaucescens Robert F. Hoover 1968-5-29 11137 Butte Cohasset Rd Comment
  SEINET10570231  Mimulus glaucescens Mary Susan Taylor 1986-5-6 Taylor 5616 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  SEINET10570232  Mimulus glaucescens Mary Susan Taylor 1974-4-30 Taylor 193 Butte Along Cohasset Road, NE of Chico. Comment
  SEINET12318322  Mimulus glaucescens K. D. Johnson 1978-1 20 Butte along Cohasset Rd toward Cohasset, 9 road mi N of East Ave, intersection in Chico 366 Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  JEPS48318  Mimulus guttatus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2686 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  SBBG28945  Mimulus guttatus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SEINET12318321  Mimulus guttatus R. T. Retuta 1978-1 5 Butte ca 0.5 mi SE of Cherokee Rd, ca 5 mi of Oroville, North Table Mountain Comment
  CAS-BOT-BC7511  Mimulus guttatus var. glaucescens R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  UC195474  Mimulus moniliformis A. A. Heller 1914-6-22 11511 Butte Chico Meadows 1219 Comment
  CHSC44758  Mimulus moschatus R. Banchero 1980-6-17 243 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC44807  Mimulus moschatus R. Banchero 1980-5-7 147 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  CHSC94014  Mimulus moschatus R. Fischer 2004-6-12 684 Butte Collected from Bidwell Park near the bottom of 10 Mile House Road, east side of Big Chico Creek, near north end of park property. Plants were growing at the edge of perennial meadow drainage. 219 Comment
  SDSU10789  Mimulus moschatus D. F. Howe 1960-9-20 2980 Butte N fork of Feather River, 32 miles from Oroville. 518 Comment
  JEPS88226  Mimulus pilosus Vernon H. Oswald and Lowell Ahart 1996-6-10 7741 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, at the N end of the Riparian Sanctuary 28 Comment
  UC426954  Mimulus primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville 1500 Comment
  JEPS4245  Mimulus torreyi A. A. Heller 1914-5-18 11414 Butte near Forest Ranch; Sierra 701 Comment
  SEINET10570286  Mimulus torreyi Mary Susan Taylor 1979-10-5 Taylor 2235 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  JEPS86879  Mimulus tricolor David M. Thompson with Lowell Ahart 1988-3-22 849 Butte n Honcut (Peter Ahart Ranch (entrance 1.2 mi n of Honcut Store along Ahart Road), 1 mi e of ranch gate, then 0.5 mi n) 36 Comment
  UC726132  Mimulus tricolor A. A. Heller 1940-5-13 15614 Butte 3 mi w Chico (along State Hwy 32) Comment
  JEPS97433  Minuartia californica Lowell Ahart 1995-5-30 7588 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  HSC32412  Minuartia californica R. A. Vanbianchi 1974-4-20 213 Butte 300 yds. S of intersection of Pentz and Clark Rds. Comment
  CAS-BOT-BC388611  Minuartia douglasii John Thomas Howell 1967-6-22 42616 Butte Magalia 701 Comment
  CHSC75488  Minuartia douglasii G. F. Hrusa; T. D. Wilfred 1997-5-7 13721 Butte Sierra Nevada. Serpentine outcrop on SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  UC1562476  Mitella breweri Vernon Oswald and Lowell Ahart 1990-7-20 4302 Butte ca. 0.25 mi w Butte-Plumas county line (headwaters of creek, between Philbrook Reservoir and Carr Mine); Philbrook Creek 1889 Comment
  SEINET11261951  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Ave.; 0 92 Comment
  CHSC39282  Monardella breweri subsp. lanceolata Lowell Ahart 1983-7-29 4255 Butte 3 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1100 Comment
  UC726051  Monardella breweri subsp. lanceolata A. A. Heller 1938-7-2 15244 Butte About 2 miles west of Arch Rock Tunnel on the Feather River Highway Comment
  UC104634  Monardella douglasii subsp. venosa C. C. Parry May 1882 Butte Chico Valley Comment
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  SEINET10968986  Monardella lanceolata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4652 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET12329572  Monardella lanceolata L. Ahart, Ahart, P. 1984-1 4652 Butte Along Hwy 40, now called Dark Canyon Rd, ca 2mi E of Old Yankee Hill, ca 16mi NE Oroville 450 Comment
  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
  RSA796042  Monardella sheltonii L. P. Janeway 2012-6-23 10888 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Bachelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CAS-BOT-BC318613  Monardella villosa subsp. subserrata Clare B. Hardham 1975-6-7 20442 Butte Lime Ridge N of Oroville (Magnolia Road). Comment
  JEPS100227  Monardella villosa subsp. villosa Dean W. Taylor 2002-7-3 18218 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  UC1093944  Monardella villosa subsp. villosa Lewis S. Rose 1955-6-15 55105 Butte 6 mi SE of Paradise on Pentz Road 426 Comment
  CHSC50557  Montia diffusa Vernon Oswald 1990-7-10 4361 Butte Bryant Ravine Rd 0.25 mi north of Feather Falls Trailhead, ca. 1.5 mi (air) north-northwest of the town of Feather Falls. Scattered plants in disturbed soil along a short track leading to Bryant Ravine Creek. 749 Comment
  CHSC38631  Montia fontana subsp. amporitana Vernon Oswald 1983-3-4 112 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. 2.4 mi e of the power lines. 256 Comment
  CHSC56080  Montia fontana subsp. amporitana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. In the lawn. 70 Comment
  CHSC61992  Montia parvifolia Lowell Ahart 1993-7-22 7079 Butte In the campground on the west side of the bridge across Fall River, about 9 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET10572726  Montia saxosa Mary Susan Taylor 1977-7-15 Taylor 1401 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC103222  Morus alba L. P. Janeway; B. Castro 2010-5-8 9973 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along Yahi Trail about 15 m north of Big Chico Creek, 380 m west of the up-per high power lines. 88 Comment
  JEPS98309  Muhlenbergia filiformis Lowell Ahart 2000-6-27 8520 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  UC573928  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  CAS-BOT-BC275345  Muhlenbergia mexicana J. W. Stacey 1933-9-29 s.n. Butte Chico Comment
  RSA518697  Muhlenbergia mexicana L. Ahart 1990-10-21 6635 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about half mile west of Gold Flat. 213 Comment
  CAS-BOT-BC275216  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  JEPS121900  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CHSC2166  Muhlenbergia rigens H. Silberman; D. Isaac 1949-5-17 Butte N. side of Big Chico Creek canyon, 7 mi. ENE of Chico. 243 Comment
  CHSC6180  Muhlenbergia rigens J. Wheeler 1968-5-16 361 Butte N of Bare Hole, Upper Bidwell Park. Comment
  CHSC44381  Myosotis discolor Lowell Ahart 1988-6-23 6080 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  RSA0125556  Myosurus minimus Michael A. Vincent, Ethan H. Freid 1998-4-6 8130 Butte Table Mountain Comment
  JEPS88529  Najas gracillima Vernon H. Oswald and Lowell Ahart 1996-6-22 8093 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River. 32 Comment
  CHSC42355  Nama lobbii Lowell Ahart 1987-5-22 5685 Butte A little north of the dirt county road, Lumpkin Ridge Road, about 4 miles northeast of Feather Falls. 1280 Comment
  UC572408  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e of Chaparral House (Lassen National Forest, Paynes Creek Quadrangle); Lassen National Forest, Paynes Creek Quadrangle 1584 Comment
  JEPS102936  Narthecium californicum L. P. Janeway, B. Castro 2002-7-7 7606 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  CHSC31723  Nassella pulchra L. Ahart 1975-5-12 764 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115953  Nassella pulchra Lowell Ahart 2009-4-26 15617 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  CHSC116224  Navarretia divaricata subsp. divaricata Lowell Ahart 2015-6-16 20237 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CHSC87539  Navarretia divaricata subsp. vividior R. D. Fischer; Jenny Marr 2004-5-9 135 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on the Annie Bidwell Trail between Diversion Dam and junction of Bloody Pin Trail. 198 Comment
  CHSC43705  Navarretia filicaulis Vernon Oswald 1985-6-26 1866 Butte Forbestown Reservoir Rd. 2.5 mi ne of Forbestown Rd. On the edge of a dirt road. 792 Comment
  CHSC69660  Navarretia filicaulis Vernon Oswald; Lowell Ahart 1997-9-9 8860 Butte Northeast of Forest Ranch on Doemill Rd. 1.3 mi west of Butte Creek Bridge, 0.6 mi east of Garland Rd. Roadside. 792 Comment
  CHSC36715  Navarretia heterandra D. H. Ikeda 1981-5-11 359 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  SEINET3696384 Image available Navarretia intertexta Lewis S. Rose 1933-5-27 33193 Butte Bangor. 267 Comment
  JEPS107882  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-6-6 11997 Butte On the west 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 51 Comment
  UCD106118  Navarretia intertexta subsp. propinqua L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC20897  Navarretia leptalea M. S. Taylor 1975-8-31 883 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  UC600665  Navarretia leptalea subsp. leptalea H. F. Copeland 1920-7-11 374 Butte Butte Creek Canyon Comment
  SEINET7042714  Navarretia leucocephala A. G. Vestal 1963-5-7 s.n. Butte 1.7 miles west of Honcut on Lower Honcut Road. Sacranento Valley and hill border. Honcut quadrangle UTM Zone 10, 623717mE, 4353204mN. Comment
  CHSC103999  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-6-20 16827 Butte Large vernal pool, about 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  JEPS107890  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11818 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  RSA256643  Navarretia leucocephala subsp. leucocephala Kitsy Kelly 1974-4-20 18 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  CHSC36816  Navarretia nigelliformis D. H. Ikeda 1980-5-11 361 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pools. Comment
  CHSC116737  Navarretia tagetina Lowell Ahart 2016-5-24 20848 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  SEINET12331843  Nemacladus capillaris Unknown 1985-1 5059 Butte Lumpkin Ridge, 1-1/2 mi E of Camp 18, about 8 mi north-east of Feather Falls 975 Comment
  SEINET12329565  Nemacladus interior Unknown 1984-1 4669 Butte At the Ponderosa Dam, ca 2 mi NW of Forbestown;along dirt road to the generator on the N side of 370 Comment
  SEINET260327 Image available Nemacladus interior Lowell Ahart 1988-7-3 6118 Butte Along the road gutter to the generator at Ponderosa Reservoir ca 1 mi E of the Ponderosa Dam 457 Comment
  CHSC42000  Nemophila heterophylla Lowell Ahart 1973-4-15 206 Butte Along Swedes Flat road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  UCD119996  Nemophila heterophylla K. Esau; M. Phillips 1929-4-13 1918 Butte Chico. Comment
  CHSC50328  Nemophila parviflora var. austiniae Vernon Oswald 1990-6-4 4283 Butte Logging road just south of Humbug Summit and Cold Springs, ca. 0.25 mile northwest of Humbug Rd, on a branch of Willow Creek. 1950 Comment
  CHSC24718  Nemophila pedunculata C. E. Stopher 1976-4-3 16 Butte 9.7 km se of Chico via Honey Run road. 100 m sw of covered bridge on s side of canyon. 122 Comment
  RSA3786  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte Near Clear Creek. Comment
  CHSC11970  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville. 1650 Comment
  JEPS87441  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte about 5 air mi ne Feather River Falls (at Camp 18) 1219 Comment
  CHSC65691  Nicotiana glauca Vernon H. Oswald 1996-3-29 7276 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. On the riprapped bank of the Sacramento River at the N end of Riparian Sanctuary. 30 Comment
  CAS-BOT-BC400310  Nymphaea odorata Arthur Menzies; Barbara Menzies 1969-8-1 s.n. Butte At corner of Nelson West Road & Chico-Butte City Hwy. Comment
  CHSC95360  Nyssa sylvatica L. P. Janeway; Morgan LoRomer 2006-9-29 8889 Butte Rancho Arroyo Chico. Sacramento Valley. On the campus of California State University Chico; two trees at the southwestern corner of Shasta Hall, about 37 m southeast of Legion Ave. half way between Citrus Ave. and Warner St. 59 Comment
  CHSC2301  Odontostomum hartwegii R. Carter 1964-5-3 78 Butte North Table Mt., 300 uds. NW of where Old Cherokee Rd. comes over S rim. 396 Comment
  UC725394  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte slope near Chico airport (in elevated region above alluvial valley proper) Comment
  CHSC47037  Oenothera elata subsp. hirsutissima R. A. Schlising 1985-10-6 4480 Butte At Sacramento River, W of Chico, N of Chico Landing site. Along E edge of river. 36 Comment
  CDA4254  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge southeast of Flea Mountain, north of Pulga, ca. 5 air miles east of Magalia. Comment
  CHSC47370  Ophioglossum californicum Lowell Ahart 1982-12-1 3900 Butte Joie Osgood Ranch, about 1 mile north-east of Honcut Cemetery, 4 miles north-east of Honcut. 79 Comment
  CHSC43597  Oreostemma alpigenum var. andersonii Vernon H. Oswald 1983-7-6 830 Butte Near Humboldt Rd. 3.4 mi NE of Butte Meadows. 1432 Comment
  CHSC91671  Orthilia secunda L. P. Janeway; Matt Brown 2005-7-13 8491 Butte Northern High Sierra Nevada. Plumas National Forest; Along Cedar Creek 0.4 km south of the Plumas County line; about 1.9 km northwest of North Fork Feather River. 1244 Comment
  SEINET6225233  Orthocarpus attenuatus L. S. Rose 1967-1 67055 Butte Oroville Comment
  SEINET10549653  Orthocarpus campestris Mary Susan Taylor 1978-5-7 Taylor 1603 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CAS-BOT-BC254365  Oryza sativa G. P. Rixford 1914-9-4 s.n. Butte Biggs Comment
  POM86786  Oxalis albicans subsp. pilosa C. C. Bruce 1897-04 1852 Butte Butte Creek. Comment
  CHSC75387  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte East side of Sacramento River and north side of Big Chico Creek, Bidwell Sacramento River State Park west of Chico, along the dirt road leading into the Big Chico Creek river access. 36 Comment
  RSA712842  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte East side of Sacramento River and north side of Big Chico Creek, Bidwell Sacramento River State Park west of Chico, along the dirt road leading into the Big Chico Creek river access. 37 Comment
  JEPS104283  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, ca 100 yd south of the Feather River, on the w side of the dirt road in the Oroville Wildlife Area, ca 3/5 of a mi w of Pacific Heights Rd, ca 5 1/2 mi (air) sw of Oroville. 39 Comment
  CHSC27249  Oxalis rubra P. Moyer 1972-3-18 151 Butte CSUC campus. 2nd and Hazel, lawn. Comment
  CHSC3308  Oxalis rubra M. Gregg 1966-4-13 67 Butte Corner of 20th and Salem Streets in Chico. In flower garden. Comment
  CAS-BOT-BC316891  Packera eurycephala var. lewisrosei John Thomas Howell 1959-9-26 35092 Butte Pulga Bridge, north fork Feather River Comment
  UC1042339  Packera eurycephala var. lewisrosei Lewis S. Rose 1954-5-31 54085 Butte near Pulga; Feather River Canyon 396 Comment
  CHSC113112  Panicum capillare Lowell Ahart 2013-11-13 19242 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
  CHSC37106  Panicum capillare L. Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  JEPS115064  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CHSC100517  Panicum dichotomiflorum Lowell Ahart 2008-11-4 15404 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC110344  Panicum dichotomiflorum B. Castro 2006-8-25 1606 Butte Sacramento Valley. CA 1.9 mi W of Hwy 99 and 1 mi E of Richvale, immediately N of Richvale Hwy in Cherokee Canal. On E side of canal about 120 ft in from toe of E levee. 32 Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  SEINET10507512  Panicum dichotomiflorum Lowell Ahart 1983-9-17 Ahart 4429 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  CHSC83003  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2002-9-7 9925 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CHSC112455  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast from Honcut. 54 Comment
  CHSC37402  Parnassia palustris R. Schlising; J. D. Jokerst 1982-9-7 4386 Butte N part of county, s of Inskip along Skyway. 1432 Comment
  CDA34641  Paspalum dilatatum L. Ahart 2009-6-3 15969 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC102410  Paspalum dilatatum Lowell Ahart 2009-6-30 15969 Butte On dry soil, on the east side of Ten Mile House Road, about 30 miles east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC31621  Paspalum dilatatum L. Ahart 1977-9-20 1578 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SD34487  Paspalum dilatatum A. A Beetle 1941-6-27 2894 Butte 4 mi. N of Gridley Comment
  CAS-BOT-BC258767  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls 425 Comment
  CHSC39528  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte In a meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CAS-BOT-BC202817  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 5 miles north-east of Oroville 609 Comment
  CHSC42058  Paxistima myrsinites Lowell Ahart 1986-11-8 5431 Butte Along Bidwell Creek, along the dirt road, about 3 air miles north-west of the Brush Creek Work Center, about 25 miles north-east of Oroville. 609 Comment
  CHSC62445  Paxistima myrsinites B. Castro; L. Janeway 1991-2-17 440 Butte Ca 6 air mi NW of Stirling City at Ewalt Camp, on NW-facing slopes E of W Branch Butte Creek and just W of Carpenter Ridge. Note: Sec 34 given for orientation since no sections are shown on quad map for this vicinity. 944 Comment
  CHSC90482  Pectocarya pusilla Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11671 Butte Big Chico Creek Ecological Reserve. Ridge top, on the east side of a very poor dirt road, about 1/4 mile west of the Indian Cave, about 1 mile west of Big Chico Creek, about 4 1/4 miles (air) northeast of Chico. 487 Comment
  SEINET10865264  Pedicularis densiflora Mary Susan Taylor 1980-5-27 Taylor 2675 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET12320799  Pedicularis densiflora T. L. Wood 1974-1 30 Butte 100 yards W of Cohasset HWY, 17 mi E of Chico Airport 232 Comment
  CAS-BOT-BC71199  Pellaea andromedifolia John Thomas Howell 1962-6-16 37620 Butte Nelson Bar 213 Comment
  CHSC86078  Pellaea andromedifolia R. D. Fischer; Paul Maslin 2003-12-24 1022 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch. Site about 1/2 mile north of the gated main entrance of the Big Chico Creek Ecological Reserve (BCCER) and about 200 ft. westward downhill of cliffs. 518 Comment
  RSA500413  Pellaea brachyptera Vernon H. Oswald 1989-5-28 3786 Butte Logging road paralleling the west side of Butte Creek, 3.2 miles south of Humboldt Road, nead Butte Meadows. 1293 Comment
  CHSC39232  Pellaea mucronata M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5216 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC32636  Pellaea mucronata var. californica M. S. Taylor; L. Hanson 1981-4-2 3478 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  RSA177468  Penstemon azureus subsp. angustissimus R. M. Straw 1962-6-26 2193 Butte 5 miles north of Bidwell Bar. 580 Comment
  POM194868  Penstemon azureus subsp. angustissimus D. D. Keck 1928-6-16 451 Butte 1.5 miles south of Berry Creek Inn. 610 Comment
  CHSC35218  Penstemon azureus var. azureus M. S. Taylor 1981-5-11 3688 Butte N side of Hwy 70, at jct with Pulga Rd and Pulga Bridge over Feather River. 487 Comment
  NY571185  Penstemon azureus var. azureus Mrs. C. C. Bruce 05 1898 2412 Butte Forest Ranch Comment
  UC436310  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  CHSC52140  Penstemon heterodoxus var. shastensis L. P. Janeway; R. A. Schlising 1988-7-1 2917 Butte Bench on N-facing flank of Snow Mtn. 2011 Comment
  CHSC1870  Penstemon laetus var. leptosepalus 1954-5-30 Butte Flea valley, Concow road, near Stirling. 762 Comment
  CHSC30303  Penstemon laetus var. leptosepalus M. S. Taylor 1980-5-27 2730 Butte N side of Oroville-Quincy Hwy, ca. 2 mi s of Lake Madrone. 609 Comment
  POM252808  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte Along the Feather River Highway on roadside banks, 25 miles from Oroville. Comment
  UC423490  Penstemon laetus var. leptosepalus David D. Keck 1930-7-25 981 Butte 4 mi w Forbestown (eastern Butte County); Sierra Nevada, w of Forbestown 762 Comment
  CHSC26836  Penstemon newberryi M. S. Taylor 1978-6-24 1650 Butte Humboldt Summit, on Butte Co and Tehama Co line. 2133 Comment
  CHSC29402  Penstemon newberryi R. A. Schlising 1980-6-10 3672 Butte Along Humboldt Road, 1.9 mi ne of jct with Hwy32 at Loma in n part of county. 1356 Comment
  CAS-BOT-BC245681  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  UC725651  Penstemon newberryi var. newberryi A. A. Heller 1942-5-8 16445 Butte Feather River Hwy, a few feet from the Plumas Co. line Comment
  UCD124114  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville. 1500 Comment
  CAS-BOT-BC239449  Penstemon rydbergii var. oreocharis Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy, Sierra Nevada Mt. Range, Feather River 1828 Comment
  CAS-BOT-BC71563  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte about 1/4 mile south of Cox Lane, east of the pole line tower, about 3 1/2 miles northeast of Honcut 100 Comment
  SEINET12326943  Pentagramma triangularis Unknown 1981-1 7 Butte ca 2 mi E of Humboldt Rd & Stillson Canyon Rd intersect. on Humboldt Rd 99 Comment
  JEPS104146  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-15 10088 Butte Northeast of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 299 Comment
  CHSC108175  Perideridia bacigalupii L. P. Janeway 2011-8-17 10659 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. 912 Comment
  JEPS104598  Perideridia bacigalupii Lowell Ahart 2003-8-6 10474 Butte In the road gutter on the w side of Encina Grande Rd, ca 50 yd se of Truman Journey Way, ca 2 mi (air) se of of Bloomer Hill, ca 6 mi (air) ne of Oroville Dam. Along the road for the next 3 miles. 609 Comment
  POM82580  Perideridia kelloggii C. C. Bruce 1897-06 2046 Butte Little Chico Comment
  JEPS110401  Perideridia lemmonii Lowell Ahart 2006-8-15 13176 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS122075  Perideridia lemmonii Lowell Ahart 2014-7-13 19667 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC1343  Persicaria amphibia V. Holt 1942-6-7 Butte Near Chico. Comment
  CHSC23425  Persicaria lapathifolia K. R. Stern 1972-9-19 3781 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC1348  Persicaria maculosa D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CAS-BOT-BC419176  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC419322  Persicaria punctata John Thomas Howell 1959-9-20 34664 Butte Eastern outskirts of Oroville 60 Comment
  CDA42947  Persicaria punctata L. Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC36531  Persicaria punctata L. Ahart; J. T. Howell 1982-8-22 3746 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 m in and 3 mi e of Honcut. 50 Comment
  CHSC92380  Persicaria punctata Lowell Ahart 2005-11-12 12489 Butte Bottom of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CHSC31563  Petrorhagia dubia L. Ahart 1974-4-11 376 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS114739  Petrorhagia dubia Lowell Ahart 2008-5-12 14759 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA725056  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  HSC32619  Petrorhagia dubia David Johnson 1974-4-20 27 Butte Along Pentz Rd., S of Clark Rd. intersection. Comment
  RSA421517  Phacelia bicolor Unspecified 1897-1 s.n. Butte Sandy valley, open flats. Comment
  SFV11587  Phacelia egena M. L. Vincent 1960-4-12 s. n. Butte Pentz Road on the way to Oroville from Paradise. 1 mile south of Paradise. Comment
  UC671701  Phacelia heterophylla subsp. virgata Lincoln Constance 1941-5-28 2829 Butte Magalia Sierra Nevada foothills, South Branch of Feather River 518 Comment
  RSA134007  Phacelia mutabilis L. R. Heckard 1956-8-6 825 Butte Along Butte Creek just west of Jonesville. 1372 Comment
  CHSC31000  Phacelia purpusii M. S. Taylor; R. S. Schlising 1980-7-6 3064 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, on rocky open edge of Yellow Pine Forest. 1127 Comment
  CHSC94269  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC43683  Phacelia vallicola Vernon Oswald 1986-4-16 1069 Butte Overlook on the Skyway 2.6 mi s of Neal Rd. 335 Comment
  POM116441  Phalaris caroliniana C. C. Bruce 1898-05 2376 Butte [No locality information provided] Comment
  CHSC38841  Phalaris paradoxa Vernon Oswald 1983-5-31 591 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. opposite the Parking Area G (0.1 mi w of the power lines). 97 Comment
  CHSC3201  Philadelphus lewisii Gerry Carrauthers 1966-4-18 113 Butte City of Chico at East Fifth and Olive Streets. Comment
  CAS-BOT-BC250862  Phleum pratense H. F. Copeland 1920-8-29 144 Butte Jonesville Meadow 1219 Comment
  CHSC41283  Phleum pratense S. C. Morey 1983-7-21 500 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS87157  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow, ne of Concow Reservoir 1097 Comment
  CAS-BOT-BC134916  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magalia. Sierra Nevada 731 Comment
  CHSC1026  Phoradendron densum M. Anthony 1942-3-25 Butte Serpentine slope near Magalia. 731 Comment
  CHSC31220  Phoradendron villosum M. S. Taylor; J. D. Jokerst 1979-10-13 2256 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  JEPS104307  Phoradendron villosum Lowell Ahart 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, ca 200 yd e of Parking Area O, Upper Bidwell Park, ca 4 1/2 mi e of Manzanita Avenue, Chico. 182 Comment
  CHSC108800  Photinia serratifolia Lowell Ahart 2012-4-9 17849 Butte In a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC58961  Phyla nodiflora var. rosea Lowell Ahart 1992-7-23 6832 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CHSC49438  Physalis acutifolia Vernon Oswald 1983-10-10 1066 Butte Near Chico on Bell Rd. ca. 1/2 mi s of the Mud Creek Diversion Channel. Along the edge of a young orchard. Comment
  CHSC51373  Physalis acutifolia Vernon Oswald; Lowell Ahart 1990-10-11 4456 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  CHSC6602  Phytolacca americana M. MacArthur 1968-6-12 314 Butte SW yard of building D, Chico State College campus. 60 Comment
  JEPS95155  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte Durham, Durham Elementary School Durham Elementary School; Durham, Durham Elementary School 57 Comment
  RSA722573  Phytolacca americana R. R. Halse 2006-8-1 6977 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC39546  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC76939  Pilularia americana Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo. Pond on west side of the Western Pacific RR 35 Comment
  CHSC6641  Pinus M. MacArthur 1968-6-13 366 Butte Chico State College campus. 60 Comment
  NY61952  Pinus monticola E. B. Copeland 1929-7-17 331 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CAS-BOT-BC79016  Pinus ponderosa John Thomas Howell 1962-6-15 37431 Butte Magalia 731 Comment
  CHSC28693  Pinus ponderosa M. S. Taylor 1978-9-9 1914 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC31514  Pinus ponderosa L. Ahart 1976-2-15 1007 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut 53 Comment
  CAS-BOT-BC72807  Pinus sabiniana John Thomas Howell 1962-6-15 37432 Butte Sierra Nevada - Magalia 731 Comment
  JEPS115635  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 259 Comment
  CHSC49680  Piperia transversa Vernon Oswald 1983-7-26 914 Butte Calif. Hwy 32, 6.2 mi n-e of Forest Ranch. 1036 Comment
  CHSC82484  Piperia transversa Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9743 Butte Mountainside, on the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC49562  Piptatherum miliaceum Vernon Oswald 1985-6-12 1829 Butte Bidwell State Park slightly s of the Washout on River Rd. On a bank of the river. 38 Comment
  SEINET10529966  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-3-19 Taylor 2390 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CAS-BOT-BC169563  Plagiobothrys M. S. Taylor 1974-3-3 68 Butte Burton's Mesa, ca 3 mi E of Chico on the Skyway to Paradise 60 Comment
  CHSC108802  Plagiobothrys canescens Lowell Ahart 2012-4-9 17486 Butte Near a small drainage, about 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC31253  Plagiobothrys canescens R. A. Schlising 1980-4-7 3559 Butte NE of Bangor, ca. 1.1 mi ne of junction Ord-Bangor Highway, on LaPorte Road. At roadside. Comment
  UC480699  Plagiobothrys canescens H. F. Copeland 1923-3-16 602 Butte near Butte Creek Comment
  JEPS94146  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte ca. 7 mi. (air) n. Oroville (ca. 0.5 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  SEINET10837186  Plagiobothrys greenei Mary Susan Taylor 1975-4-29 Taylor 541 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC42514  Plagiobothrys hispidulus Lowell Ahart 1987-5-6 5506 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC40764  Plagiobothrys nothofulvus Ahart; Jokerst 1985-5-10 4955 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UC1564795  Plagiobothrys scouleri V. Oswald and L. Ahart 1989-7-12 3852 Butte ca 2 mi (air) sw Lotts Lake (ca 3 mi (air) se of Philbrook Reservoir, near headwaters of Big Kimshew Creek) 1901 Comment
  CHSC46766  Plagiobothrys scriptus Lowell Ahart 1977-4-9 1276 Butte Along the edges of a small swale, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10497608  Plagiobothrys scriptus Mary Susan Taylor 1980-3-28 Taylor 2405 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CHSC35068  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4018 Butte W of Oroville and SW of Thermalito, at S border of Oroville Municipal Airport; off Larkin Road, 1.2 mi S of jct with Hwy 162. Comment
  UC634851  Plagiobothrys stipitatus H. L. Mason 1927-5-9 3704 a Butte 12 mi w Oroville Comment
  CHSC103731  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-16 16678 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CHSC112938  Plagiobothrys stipitatus var. micranthus B. Castro 2012-5-29 1926 Butte Sacramento Valley. Between E. Hamilton Rd and the S edge of the Thermalito Afterbay levee, ca 0.6 mi E of Hwy99. 35 Comment
  JEPS107340  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
  JEPS98580  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte 5 air miles SW of Oroville (S side of the access road to the boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  CHSC54377  Plagiobothrys stipitatus var. stipitatus M. Bailey 1991-4-19 564 Butte Butte College campus. On margins of drainages, w of Well #3 ca 500 ft e of Williams Road and 1/4 mi n of Pentz Road. 85 Comment
  SEINET10499839  Plantago bigelovii Lowell Ahart 1984-4-24 Ahart 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC52185  Plantago coronopus J. D. Jokerst; V. Oswald 1985-4-14 2230 Butte Occasional along dirt road. Top of North Table Mountain near east edge of mesa north of Cherokee Road. 396 Comment
  CHSC82434  Plantago coronopus Lowell Ahart 2002-5-7 9642 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  UCD77277  Plantago coronopus Robert E. Preston 2005-3-24 2326 Butte Palermo Substation, ca. 1.3 mi NE of Palermo 121 Comment
  UCSC008612  Plantago elongata Lowell Ahart 2012-4-9 17835 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2-1/4 (air) miles northeast of Chico. 142 Comment
  CHSC1220  Plantago erecta F. Roos 1930-3-28 Butte Paradise. 548 Comment
  CHSC39769  Plantago erecta D. McClain 1968-3-9 6 Butte Abundant on slopes below cliffs ca. 1000 yds. N. of road, ca. 2.2 miles from end of paved road in Upper Bidwell Park, Chico. 198 Comment
  CHSC41135  Plantago erecta Paul K. Kirk 1981-4-16 10 Butte 150 m w of the e gate of Cherokee Rd. on Table Mountain, 13 km n of Oroville. 390 Comment
  CHSC52101  Plantago erecta William Nielson 1984-3-28 16 Butte 5 m s of Skyway, ca. 2 km w of jct with Hwy 99. 95 Comment
  CDA31972  Plantago major L. Ahart 2009-7-3 15990 Butte About 60 yards west of Cedar Grove parking area, Lower Bidwell Park, Chico. Comment
  CDA42769  Plantago virginica L. 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. Comment
  JEPS98311  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  UCD124385  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte on the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC50438  Platanthera sparsiflora Vernon Oswald; Lowell Ahart 1990-6-20 4303 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  CAS-BOT-BC91590  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico. Comment
  CHSC1209  Platystemon californicus S. Carter 1929-4-16 Butte Just north of Chico. 60 Comment
  UC118461  Platystemon californicus Mrs. R. M. Austin Apr 1896 170 Butte plains e Chico; plains e of Chico Comment
  UC1185298  Platystemon californicus H. E. Brown Apr 15 1897-Apr 30 1897 167 Butte near Clear Creek; near Clear Creek 53 Comment
  CHSC19939  Plectritis ciliosa M. S. Taylor 1975-3-10 415 Butte On bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  UC426929  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CAS-BOT-BC244402  Poa annua Javier Penalosa 1962-6-18 2462 A Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC47626  Poa annua Lowell Ahart 1977-4-2 1236 Butte In a pasture field, 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
  CDA34180  Poa bulbosa L. Ahart 2009-4-22 15598 Butte South side of Guardian s Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  CAS-BOT-BC255063  Poa compressa John Thomas Howell 1962-6-16 37578 Butte Pentz Road 2 miles S of Magalia 609 Comment
  CHSC46980  Poa compressa Vernon H. Oswald 1989-9-27 4018 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of Little Butte Creek where it enters the lake. 775 Comment
  UC4609251  Poa compressa Lowell Ahart 1993-7-23 7094 Butte ca 6 air mi ne Feather Falls (w side of Fall River, ca 100 yds w of bridge across Fall River) 1036 Comment
  CHSC103983  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16676 Butte On the south side of the Guardian Trail, at the intersection of Guardian Trail and Humboldt Trail, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 5 miles (air) northweat of Chico. 320 Comment
  CHSC93505  Poa secunda subsp. secunda Lowell Ahart 2006-5-10 12615 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  UCD92088  Poa tenerrima Robert E. Preston 2002-3-21 1778 Butte Chico, NE of intersection of Skyway and Bruce Rd. 70 Comment
  SEINET7072553  Pogogyne zizyphoroides A. G. Vestal 1963-5-7 s.n. Butte About 1.7 miles west of Honcut on Ahart Road. Coordinate datum: NAD 27. UTM Zone 10, 627360mE, 4356415mN. Comment
  CHSC64205  Polemonium occidentale S. C. Morey 1983-7-23 586 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. Meadow. 1414 Comment
  CHSC25467  Polemonium pulcherrimum Hayes; Warner 1977-9-11 87 Butte Near top of Humboldt Peak, ca. 2 km e of Humboldt Summit on Butte-Tehama County line. 2133 Comment
  UCSB64008  Polycarpon tetraphyllum Ahart, Lowell 1976-6-27 Butte Along North Honcut Creek; about 3/4 mile north and 2 1/2 miles east of Honcut; about 12 miles south of Oroville 36 Comment
  CHSC109070  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 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
  SEINET10493886  Polygala cornuta Lowell Ahart 1985-6-30 Ahart 5081 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  SEINET267153  Polygala cornuta var. cornuta T. A. Ranker, P. G. Trapp 1994-6-17 1616 Butte Pence Road south of Paradise. 395 Comment
  JEPS104470  Polygonum amphibium var. emersum Lowell Ahart 2003-6-16 10287 Butte In a ditch on the w side of Wickman Rd, ca 1 mi south of Richvale West Rd, ca 1 1/2 mi (air) sw of Richvale. 28 Comment
  CHSC31216  Polygonum aviculare M. S. Taylor 1980-10-6 3359 Butte N side of Hwy 70 in granitic gravel, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CAS-BOT-BC414193  Polygonum aviculare subsp. depressum Lowell Ahart 1986-11-9 5453 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
  CHSC50680  Polygonum aviculare subsp. neglectum Lowell Ahart 1990-7-1 6532 Butte On the north edge of the dirt road, south-west of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CAS-BOT-BC109135  Polygonum bidwelliae Lowell Ahart 1980-5-11 2239 Butte 0.5 mile southwest of Kunkle Res. 500 Comment
  CHSC28768  Polygonum bidwelliae J. D. Jokerst 1978-5-21 125 Butte Ca. 200 mets. N. W. of Hwy 32, 7.7 mi. N. of Chico, top of ridge. 365 Comment
  CHSC39043  Polygonum bolanderi R. A. Schlising 1980-7-25 3916 Butte N part of county, along Humboldt Road, 1.9 mi NE jct with highway 32 at Lomo. 1356 Comment
  CHSC28791  Polygonum californicum J. D. Prouty 1979-5-23 7905233 Butte Open plateau just n of The Skyway ca. 4 mi e of Chico. 170 Comment
  UCD100175  Polygonum californicum Lowell Ahart 1981-11-6 3216 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC414369  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  POM219174  Polygonum douglasii H. F. Copeland 1928-8-18 318 Butte Jonesville, Butte Creek Canyon 1524 Comment
  UCR66524  Polygonum douglasii H. F. Copeland 1928-8-18 0318 Butte Jonesville, Butte Creek Canyon 1529 Comment
  CAS-BOT-BC414419  Polygonum douglasii Lowell Ahart 1988-7-31 6158 Butte On the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air miles north-east of Stirling City 1066 Comment
  CHSC94494  Polygonum douglasii subsp. douglasii Lowell Ahart 2006-8-15 13189 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  NY323773  Polygonum greenei A. E. Bidwell 07 1878 s.n. Butte Comment
  RSA724853  Polygonum lapathifolium L. Ahart 2006-9-28 13371 Butte E side of the N Fork of the Feather River, on the W side of Hwy 70, 50 yards SW of the Shady Rest Area S of the Arch Rock Tunnel. Comment
  CHSC11917  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville. On shaded gravel bars by Butte Creek. 1500 Comment
  CHSC58946  Polygonum minimum Lowell Ahart 1992-7-29 6874 Butte On rocky slopes, about 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CHSC46011  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte Along the edge of the dirt road where there is a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles northeast of Stirling City. 1371 Comment
  JEPS108976  Polygonum persicaria Lowell Ahart 2006-9-11 13290 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
  UC203615  Polygonum persicaria A. A. Heller 1914-8-20 11690 Butte about 5 mi s Pentz; Dry Creek Comment
  POM183168  Polygonum phytolaccifolium H. F. Copeland 1930-7-21 1326 Butte Jonesville. 1524 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  CHSC90136  Polypodium calirhiza Jack Judkins 1983-4-16 5 Butte 6 mi east-southeast of Chico, 200 yds south of Butte Creek, 200 yds southeast of the Covered Bridge. 274 Comment
  HSC103916  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte About 9 mi. (air) NE of Chico; east edge of Big Chico Creek, ~100 yds. S of trail crossing creek, ~100 yds W of Ten Mile House Road; ~.75 mi. W of Hwy. 32 190 Comment
  CAS-BOT-BC232962  Polypogon australis Lowell Ahart 1987-6-9 5730 Butte Along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CAS-BOT-BC233058  Polypogon interruptus Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC233060  Polypogon interruptus Lowell Ahart 1983-6-15 4057 Butte Banks of N Honcut Creek, Peter Ahart Ranch, about 1.5 miles N and 3 miles E of Honcut 50 Comment
  CHSC34177  Polypogon interruptus L. Ahart 1981-9-15 3158 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC35659  Polypogon interruptus R. E. Preston 1982-4-22 247 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  CHSC40006  Polypogon interruptus Lowell Ahart 1983-6-15 4057 Butte On the low banks of North Honcut Creek. Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  CHSC90933  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC1562415  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  UCD51663  Polypogon interruptus H. F. Copeland 1923-1 s.n. Butte near Nelson. Comment
  SEINET10602405  Polypogon interruptus Lowell Ahart 1990-5-25 Ahart 6489 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. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  CAS-BOT-BC232571  Polypogon monspeliensis Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC47632  Polypogon monspeliensis Lowell Ahart 1982-7-18 3681 Butte Along the sides and bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC32686  Polystichum imbricans M. S. Taylor 1981-3-18 3420 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  JEPS124286  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte About 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) north of De Sabla Reservoir. Comment
  CHSC82489  Polystichum imbricans subsp. imbricans Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9735 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SBBG119825  Polystichum imbricans subsp. imbricans L. Ahart 2003-7-30 10459 Butte N side of Bald Rock, S side of Bean Crk Rd, ca. 2 air mi SE of Brush Crk 1000 Comment
  UCD136558  Polystichum munitum Lowell Ahart 1981-11-8 3231 a Butte Near the Golden Trout Crossing. 800 Comment
  CAS-BOT-BC102691  Populus tremuloides A. A. Heller 1928-7-25 14699 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  SEINET10965500  Portulaca oleracea Mary Susan Taylor 1977-10-10 Taylor 1506 Butte In dried up weed field on N side of Crauch Road, at its junction with Lone Pine Road, ca. 4 mi S of Chico. 46 Comment
  CHSC46305  Potamogeton diversifolius Vernon Oswald 1989-5-30 3788 Butte Sheep Camp Ditch and Vandergrift Lake on the w side of the n end of Cana-Pine Creek Rd. In both ditch and the lake. 54 Comment
  SEINET3837458  Potamogeton heterophyllus Unknown 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC8766  Potamogeton natans S. Chulasmai 1966-3-25 3 Butte Dredger Pond (3 miles south of Chico). Comment
  CHSC46228  Potentilla glandulosa Pauleen Broyles 1987-6-26 1063 Butte Ca 2 km s. of Inskip on w. side of Skyway, in meadow. 1400 Comment
  CDA13900  Potentilla glandulosa subsp. glandulosa G. F. Hrusa, T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada; Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC46237  Potentilla gracilis Pauleen Broyles 1987-7-5 1073 A Butte Ca 7 km n of Inskip on Bull Hill Road where it crosses Coon Creek. Roadside. 1500 Comment
  CHSC50562  Poteridium annuum Vernon Oswald; Lowell Ahart 1990-7-5 4347 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  UCD113969  Poterium sanguisorba C. F. Bielar; Alva W. Mitchell 1968-6-10 s.n. Butte 5629 Sawmill Rd., Paradise. Comment
  CHSC37707  Prunus avium M. S. Taylor 1981-5-29 3813 Butte At old cabin site (persisting) on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chico Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC96429  Prunus caroliniana L. P. Janeway 2007-3-30 8965 Butte Sacramento Valley. Rancho Arroyo Chico. On campus of California State University Chico; 35 m north of Big Chico Creek, 10 m east of the pedestrian path across the creek to the middle of Holt Hall; part of the Camelia Garden. 60 Comment
  CHSC109174  Prunus cerasifera Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, soouth of the path, south of the paved park road,south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. Comment
  CAS-BOT-BC159924  Prunus emarginata Brandegee 1892-9-29 s.n. Butte Jonesville Comment
  CHSC23647  Prunus emarginata M. S. Taylor 1976-4-4 1063 Butte On n side of Ponderosa Way, ca. 3 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  POM196545  Prunus emarginata H. F. Copeland 1929-6-10 1200 Butte Jonesville. 1524 Comment
  SD2306  Prunus emarginata E. B. Copeland 1931-7-28 Butte On ridge west of North Willow Creek, in chaparral. Jonesville 1650 Comment
  CHSC99586  Prunus subcordata L. P. Janeway 2008-6-15 9407 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  JEPS122208  Pseudognaphalium luteoalbum Lowell Ahart 2014-4-25 19395 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  RSA0118932  Pseudognaphalium luteoalbum Lowell Ahart 2013-11-13 19229 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
  CAS-BOT-BC357590  Pseudognaphalium stramineum Lowell Ahart 1987-5-6 5501 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC25481  Psilocarphus brevissimus var. brevissimus L. Ahart 1977-4-15 1302 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC361740  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  SFV4079  Psilocarphus tenellus M. L. Vincent 1962-4-15 174 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  CHSC82439  Psilocarphus tenellus var. tenellus Lowell Ahart 2002-5-7 9611 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  NY406422  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CAS-BOT-BC460485  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 Comment
  CHSC103729  Pterostegia drymarioides Lowell Ahart 2010-5-16 16697 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC45956  Pterostegia drymarioides Lowell Ahart 1974-4-7 351 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS113317  Pyracantha koidzumii L. P. Janeway 2006-10-4 8904 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  JEPS119782  Pyracantha koidzumii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18016 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC48677  Pyrola dentata Vernon Oswald; Lowell Ahart 1987-7-1 3063 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC11802  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville. 1600 Comment
  CHSC51871  Pyrola picta L. P. Janeway 1987-6-26 2299 Butte At Rag Dump. 1173 Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  CAS-BOT-BC94692  Quercus X howellii John Thomas Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz 426 Comment
  SBBG50492  Quercus berberidifolia J. T. Howell 1955-6-15 Butte 6 mi from Paradise on Rd to Pentz 426 Comment
  CHSC20506  Quercus chrysolepis M. S. Taylor 1975-5-2 549 Butte Ca. 1/4 mi w of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  SFV902  Quercus chrysolepis M. L. Vincent 1960-7-8 57 Butte Sierra Nevada Paradise. Across the road from 5330 Harrison Road. 515 Comment
  UCD57254  Quercus chrysolepis G. F. Hrusa; T. D. Wilfred 1997-5-7 13739 Butte Sierra Nevada. Immed. E of Holmwood Drive. N of Magalia. Above Little Butte Creek. 750 Comment
  CHSC3255  Quercus douglasii Virginia Hagaman 1966-4-23 135 Butte 6 miles north of Chico on highway 32 at edge of road. Comment
  UCD45944  Quercus durata D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC52340  Quercus garryana var. semota L. P. Janeway 1989-5-19 3268 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
  RSA325123  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 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
  CHSC98658  Quercus vacciniifolia Robert F. C. Naczi; Anton A. Reznicek 2006-8-1 11392 Butte Northernmost part of county, ca. 3.2 mi NNE of Jonesville, ca. 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak. 2080 Comment
  SEINET10536223  Ranunculus Mary Susan Taylor 1979-3-31 Taylor 1963 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC50337  Ranunculus alismifolius var. hartwegii Vernon Oswald; Lowell Ahart 1990-5-29 4268 Butte Butte Creek House Meadow on the east side of Humbug Rd, ca. 3.5 miles (air) east-southeast of Jonesville. 1777 Comment
  CHSC48696  Ranunculus aquatilis var. aquatilis Vernon Oswald 1984-3-26 1088 Butte Beside Meridian Rd. ca 9.5 mi nnw of Chico and 0.6 mi s of the Tehama-Butte County line. In a drainage in a field. 83 Comment
  CAS-BOT-BC379223  Ranunculus aquatilis var. aquatilis Lowell Ahart 1970-4-4 s.n. Butte Honcut, Peter Ahart Ranch 150 Comment
  CHSC1472  Ranunculus arvensis M. Anthony 1953-4-16 Butte Dr. Benedict's ranch. 60 Comment
  RSA299449  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte Skyway Drive, 1 miles E of Hwy 99. 61 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  CHSC38160  Ranunculus canus Vernon Oswald 1983-3-26 206 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.7 mi e of the power lines. 286 Comment
  CHSC52780  Ranunculus canus Vernon Oswald 1983-3-19 198 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. near Devil's Kitchen (2.1 mi e of the power lines). 225 Comment
  JEPS117511  Ranunculus canus Lowell Ahart 2010-5-22 16725 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 408 Comment
  UC398652  Ranunculus canus A. A. Heller 1926-3-31 13916 Butte 14 mi s Chico; Nelson Comment
  SEINET10535967  Ranunculus canus Mary Susan Taylor 1975-3-3 Taylor 397 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  CHSC101275  Ranunculus muricatus Lowell Ahart 2009-4-3 15538 Butte On the north and south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC90640  Ranunculus muricatus Lowell Ahart 2005-4-2 11693 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
  CHSC52692  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 318 Butte Near Humbug Road, between Butte Creek House and Snag Lake; in meadow. 1804 Comment
  JEPS123886  Ranunculus pusillus Lowell Ahart 2015-5-5 20139 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville 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
  CAS-BOT-BC55826  Rhamnus Elmer I. Applegate 1932-4-12 7040 Butte East bank of the Sacramento River, about 2 miles west of Cana, northwest corner of Butte County Comment
  SEINET10493592  Rhamnus californica subsp. tomentella Mary Susan Taylor 1981-7-10 Taylor 4066 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC25522  Rhamnus ilicifolia Marc Hayes; Warner 1977-9-11 64 Butte Along roadside, ca. 3 m s of road on Humboldt Rd., ca. .5 mi from junction of Humboldt Rd. and Hwy 32 (exactly 5.2 miles from Hwy 99 overpass on Hwy 32 in Chico). 152 Comment
  RSA31115  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 miles below Centerville in the Sierra foothills Comment
  UC1121919  Rhamnus rubra C. G. Albertus 1933-7-1 37 Butte sw slope Promontory Point; Chico Quad. 1005 Comment
  RSA104165  Rhamnus tomentella subsp. tomentella R. M. Austin 1883-1 s.n. Butte [Unspecified] Comment
  RSA30407  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-16 s.n. Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  CDA13317  Rhododendron occidentale G. F. Hrusa, T. D. Wilfred 1996-7-9 13163 Butte Sierra Nevada; Moist, shaded bank of Jordan Creek, near old Picnic Area above waterfall upstream from confluence with Marble Creek. Shrub, 3 meters tall. Flowers fragrant. Few here. Comment
  CHSC95230  Rhynchospora capitellata L. P. Janeway 2006-7-21 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley. 1.1 km west-northwest of Flea Mountain. 1140 Comment
  JEPS27767  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte forest near DeSabla 853 Comment
  UC569561  Ribes roezlii P. L. Johannsen 1936-7-16 925 Butte Bolt Creek Paynes Creek Quadrangle 1432 Comment
  SEINET13942772 Image available Ribes roezlii A. A. Heller 2015-1 11970 Butte Chico Meadows in the Sierra Nevada, elevation 4000 feet in dry places. 1219 Comment
  CAS-BOT-BC198959  Ribes roezlii var. roezlii Lowell Ahart 1988-3-28 5953 Butte About 1/10 mile south of Lumpkin Ride road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CHSC109063  Ribes roezlii var. roezlii Lowell Ahart 2012-4-30 17922 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  CAS-BOT-BC362955  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CAS-BOT-BC74454  Rorippa curvisiliqua Lowell Ahart 1974-5-5 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC74463  Rorippa curvisiliqua Lowell Ahart 1986-11-9 5451 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles SW of Oroville. 36 Comment
  CAS-BOT-BC74471  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  CAS-BOT-BC74456  Rorippa curvisiliqua Lowell Ahart 1979-5-20 s.n. Butte 2 miles south of Palerma. 35 Comment
  SEINET10907260  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-21 Ahart 4878 Butte Along the sides of Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville, Butte County. Comment
  CHSC96825  Rorippa curvisiliqua var. orientalis Lowell Ahart 2007-5-29 13934 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 mile (air) southwest of Forbestown. 829 Comment
  JEPS118337  Rosa californica Lowell Ahart 2011-8-17 17622 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) northeast of Chico 197 Comment
  CAS-BOT-BC148126  Rosa gymnocarpa Lowell Ahart 1983-9-21 4464 Butte Along French Creek, aobut 3 miles north of the sly Creek Dam, north of Strawberry Valley 900 Comment
  CAS-BOT-BC148317  Rosa pisocarpa A. A. Heller 1938-7-20 15283 Butte In a meadow upper end of Snag Lake, 7 miles east of Chaparral. 1524 Comment
  CHSC116712  Rosa pisocarpa subsp. ahartii Lowell Ahart 2016-5-15 20834 Butte On 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
  JEPS94329  Rosa pisocarpa subsp. ahartii Lowell Ahart 1997-8-1 7797 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on the bottom of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  UC1926782 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC78521  Rotala ramosior Lowell Ahart 2000-8-28 8667 Butte Northwest edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  JEPS120765  Rotala ramosior Lowell Ahart 2013-9-20 19059 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CDA42869  Rubus armeniacus L. Ahart 2012-5-14 18055 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC31793  Rubus armeniacus L. Ahart 1976-5-21 1116 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45810  Rubus armeniacus L. P. Janeway 1987-5-7 2019 Butte Along Little Chico Cr at the powerlines; near Stilson Cyn Rd 0.8 mi east of Bruce Rd. 88 Comment
  CHSC73813  Rubus glaucifolius B. Castro; L. Hanson 1996-8-22 718 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge. On knoll, ca 0.2 mi N of overlook to Seven Falls. 1005 Comment
  CHSC96817  Rubus glaucifolius Lowell Ahart 2007-5-29 13922 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  CAS-BOT-BC147200  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CHSC32114  Rumex acetosella L. Ahart 1977-5-2 1346 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CAS-BOT-BC421734  Rumex conglomeratus Lowell Ahart 1989-5-31 6331 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
  CHSC100896  Rumex crispus R. A. Schlising; Lawrence Janeway 1988-8-2 4656 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC109151  Rumex crispus Lowell Ahart 2012-5-14 18057 Butte 100 feet south of Table 12, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. 76 Comment
  CHSC20716  Rumex crispus M. S. Taylor 1975-8-31 876 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC103146  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CDA2892  Rumex obtusifolius L. Ahart 1998-7-1 8034 Butte East of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC51275  Rumex salicifolius var. denticulatus Lowell Ahart 1990-10-3 6619 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC99673  Rupertia hallii R. A. Schlising 2006-8-16 4464 Butte Carpenter Ridge, southwest of Butte Meadows, in scraped roadside of Humboldt Road, 2 miles east of junction Hwy 32. 1380 Comment
  CHSC60581  Sagina apetala Vernon H. Oswald; Lowell Ahart 1993-4-21 5290 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC96487  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
  CHSC98805  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 238 Comment
  UC392230  Sagittaria cuneata E. B. Copeland 1929-7-28 Butte near Butte Creek House (Jonesville); , near Butte Creek House 533 Comment
  UC935746  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13020 Butte Butte Sink; canal near big pond on Sacramento Outing Club Comment
  CHSC116328  Sagittaria sanfordii Lowell Ahart 2015-10-24 20586 Butte Bottom of a large canal, on both sides of Gilstrap Avenue, about 400 yards north of where Gilstrap Avenue makes a 'S' turn, about 2 miles (air) from the center of Gridley. 19 Comment
  UCD138068  Sagittaria sanfordii J. Jones 1924-11-20 s.n. Butte Biggs. Comment
  RSA0118697  Salix babylonica Lowell A. Ahart 2014-4-9 19348 Butte About 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 20 Comment
  JEPS119879  Salix exigua var. exigua Lowell Ahart 2012-6-2 18139 Butte About 40 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC111739  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC47485  Salix exigua var. hindsiana Lowell Ahart 1984-6-8 4676 Butte About 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 426 Comment
  CAS-BOT-BC107966  Salix geyeriana H. F. Copeland 1920-5-21 s.n. Butte Jonesville 1219 Comment
  JEPS119845  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southeast of intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA28803  Salix laevigata A. A. Heller 1914-3-21 11222 Butte 8 miles N of Oroville below the Quercus douglasii belt. Comment
  UC176210  Salix laevigata A. A. Heller 1913-4-4 10694 Butte levee at Oroville Comment
  CHSC108853  Salix lasiolepis Lowell Ahart 2012-3-9 17773 Butte Middle of North Honcut Crek, 30 yards east of the floodgate, Peter Ahart Ranch, about 1 mile north and 2 -1/2 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  CHSC3226  Salix lasiolepis Virginiga Hagaman 1966-3-14 67 Butte South end of Rock Creek bridge. Comment
  JEPS119574  Salix lasiolepis Lowell Ahart 2012-3-9 17772 -A Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  SBBG126100  Salix lasiolepis L. Ahart 2012-6-5 18169 Butte E side of the dam, at the reservoir, N of Beatson Hollow, ca 1.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  CHSC9695  Salix lasiolepis var. lasiolepis E. L. Smith 1971-9-12 1067 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  SEINET10537413  Salsola Mary Susan Taylor 1979-10-2 Taylor 2207 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  UCR188576  Salsola tragus George K. Helmkamp, E. A. Helmkamp 2007-10-7 13066 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  POM71110  Salvia sonomensis C. C. Bruce 1897-05 1983 Butte Forest- Ranch. Comment
  UC215467  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte near Cohasset (Sierra foothills); Sierra Comment
  CHSC31750  Sambucus mexicana S. Posner 1972-9-21 Butte 50 yds. west of nord, 600 yds. south of Sacramento Ave, Chico. Comment
  RSA755771  Sambucus mexicana L. Ahart 2009-5-30 15807 Butte East side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 412 Comment
  CHSC12398  Samolus parviflorus Lowell Ahart 1973-6-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10483279  Sanguisorba minor Lowell Ahart 1985-5-10 Ahart 4958 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  NY43554  Sanguisorba minor subsp. muricata S. Bianco 1995-8-26 1022 Butte SE of Concow Rd & Hoffman Rd intersection, along dirt road (Private land holding) 760 Comment
  CHSC90591  Sanicula bipinnatifida Gary R. Koses 1979-3-27 11 Butte 11 mi se of Chico, junction of Pentz rd and Pentz Magalia Hwy, s side of Pentz rd. Comment
  RSA52125  Sanicula crassicaulis A. A. Heller, H. E. Brown 1902-5-8 5506 Butte Berry Canyon (near Clear Creek) Comment
  SEINET12121564  Sanicula crassicaulis Unknown 1984-1 4540 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut on Peter Ahart Ranch 50 Comment
  CHSC101186  Sanicula tuberosa L. P. Janeway; B. Castro 2009-4-18 9727 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 733 Comment
  CHSC28650  Sanicula tuberosa M. S. Taylor 1979-3-20 1928 Butte Along old road on n side of Hwy 70 following Feather River, which begins at s side of bridge over north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC42669  Sanicula tuberosa Vernon Oswald 1985-6-17 1841 Butte Beside a logging road 0.1 mi e of the trailhead to Feather Falls. 768 Comment
  CHSC67150  Sanicula tuberosa James D. Jokerst; L. Ahart 1985-3-24 2179 Butte Rocky Ridge' ca. 1.33 mi NE of edge of Lake Concow on road to Flea Mtn. Comment
  CHSC43274  Saponaria officinalis Lowell Ahart 1987-8-30 5864 Butte On gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC5985  Sarcococca ruscifolia M. MacArthur 1968-6-12 148 Butte NW side of Ls Bld. near the SW end, Chico State College campus. 60 Comment
  CAS-BOT-BC436856  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436866  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 36 Comment
  CHSC1672  Saxifraga californica D. Stover 1929-3-15 Butte Bidwell Park. 91 Comment
  SEINET12215661  Saxifraga californica Unknown 1977-1 77 Butte in Beaston Hollow, ca 2.4 km W of Cherokee Rd, 4.8 km E of Hwy 70, 7.6 km NE of Oroville 5 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  CAS-BOT-BC283624  Schedonorus pratensis John Thomas Howell 1951-6-26 27520 Butte Big Bend Mt 609 Comment
  RSA88186  Schedonorus pratensis J. T. Howell 1951-6-26 27520 Butte Big Bend Mt. 610 Comment
  CHSC36552  Schoenoplectus acutus var. occidentalis L. Ahart 1982-7-10 3674 Butte On bottom of a dry duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC31691  Schoenoplectus mucronatus L. Ahart 1972-7-5 133 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC88471  Schoenoplectus mucronatus L. P. Janeway; Gail Kuenster 2004-6-29 8172 Butte Northern Sierra Nevada Foothills. Cove on south side of South Fork Feather River arm of Lake Oroville between Stringtown Mountain and Stringtown Road. 280 Comment
  UC1100827  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 mi w Biggs; w of Biggs Comment
  CDA13830  Scirpus acutus var. occidentalis G. F. Hrusa, T. D. Wilfred 1996-9-5 13558 Butte Butte Basin; Butte Creek and about rice fields E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CAS-BOT-BC123993  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  UC600701  Scirpus microcarpus H. F. Copeland 1932-7-25 Butte Jonesville Jonesville (below cabins) Comment
  CAS-BOT-BC239959  Scribneria bolanderi Lowell Ahart 1980-5-4 2212 Butte Near Hurleton 600 Comment
  CHSC38854  Scribneria bolanderi Vernon Oswald 1983-3-26 212 Butte Upper Bidwell Park, Chico, on the north rim ca. 1200 ft w of the power lines. 213 Comment
  CHSC84120  Scribneria bolanderi Lowell Ahart 2003-5-18 10180 Butte Wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  JEPS104220  Scribneria bolanderi Lowell Ahart 2003-5-18 10180 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  CHSC27791  Scrophularia californica subsp. floribunda Steven R. Johnson 1978-4-25 15 Butte Ca. 22 km n of Chico, ca. 4.8 km s of Cohasset. 590 Comment
  CHSC46381  Scutellaria californica Lowell Ahart 1989-5-28 6291 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC107265  Scutellaria siphocampyloides L. P. Janeway 2011-6-27 10402 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 850 m east-southeast of the top. 721 Comment
  POM70078  Scutellaria siphocampyloides C. C. Bruce 1897-04 1835 Butte Butte Creek. Comment
  UC398676  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte e of Chico (Big Chico along Chico Creek); Big Chico, Chico Creek Comment
  CHSC31155  Scutellaria tuberosa M. S. Taylor 1979-5-4 1995 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  SEINET10499233  Scutellaria tuberosa Mary Susan Taylor 1981-4-28 Taylor 3565 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
  CHSC42518  Secale cereale Lowell Ahart 1987-5-6 5571 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC75267  Sedella pumila Jennifer Slater 1997-4-6 6 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC90601  Sedella pumila Steven H. Roth 1980-3-15 6 Butte 50 m s Butte Creek at the Honeyrun bridge, 10 km se of Chico. Comment
  RSA32758  Sedella pumila A. A. Heller 1938-4-22 15042 Butte About 9 miles north of Chico along U, S. Highway 99E. Comment
  CHSC87534  Sedum spathulifolium R. D. Fischer 2004-3-28 99 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail approx. 0.25 miles south of Pine Trail junction. Located on north facing cliff face. 396 Comment
  SEINET10530436  Selaginella hansenii Mary Susan Taylor 1980-3-1 Taylor 2346 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET10874644  Selaginella hansenii Mary Susan Taylor 1981-3-18 Taylor 3419 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC96138  Selaginella wallacei Lowell Ahart 2007-2-24 13584 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  CHSC43633  Senecio aronicoides Vernon Oswald 1984-6-11 1278 Butte Humboldt Rd. to Butte Meadows, 3.3 mi n-e of its jct. with Hwy 32. 1438 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
  SEINET10872075  Senecio eurycephalus var. lewisrosei Heidi H. Schmidt 1993-6-15 Schmidt 869 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  SBBG27945  Senecio integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  CAS-BOT-BC363995  Senecio integerrimus var. major Lowell Ahart 1982-5-8 3410 Butte About 1/2 mile south-west of the Forbestown Res. 800 Comment
  CHSC109666  Senecio sylvaticus Lowell Ahart; S. Bazell, J. Guardino, W. Dempsey, J. Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC51857  Senecio triangularis L. P. Janeway 1987-7-5 2452 Butte 0.4 mi E on a spur rd from th Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  CDA8687  Senecio triangularis T. C. Fuller 1962-7-12 9168 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC19942  Senecio vulgaris M. S. Taylor 1975-3-26 428 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC4118  Senecio vulgaris R. Carter 1966-4-2 325 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CAS-BOT-BC364544  Senecio vulgaris Lowell Ahart 1982-1-8 3232 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut 50 Comment
  HSC68223  Senecio vulgaris J. P. Smith 1973-3-22 5923 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  POM37335  Senecio vulgaris C. C. Bruce 2465 Butte Plains. Comment
  UCD135859  Senecio vulgaris M. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Rd, on Clark Road. Comment
  CHSC27251  Sequoia sempervirens P. Moyer 1971-10-2 29 Butte CSUC Campus. On n side of L.S. Bldg. 60 Comment
  CHSC26672  Sericocarpus oregonensis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1502 Butte Scattered on E side of the Skyway, in Inskip. 1615 Comment
  CHSC86849  Sericocarpus oregonensis L. P. Janeway; Gavin Blosser 2003-8-27 7970 Butte Northern Sierra Nevada Foothills. East side of McCabe Creek arm of South Fork Feather River arm of Lake Oroville; 1.0 km (air) south-southwest of the southern end of Enterprise Bridge. 282 Comment
  CHSC95998  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley. Shallow arm of Thermalito Afterbay, 150 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CHSC102964  Setaria viridis Lowell Ahart 2009-7-9 16021 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
  CHSC47072  Sherardia arvensis R. A. Schlising 1986-3-22 4481 Butte Richvale Vernal Pools; 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  JEPS103295  Sherardia arvensis Lowell Ahart 2002-5-7 9643 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  JEPS115327 Image available 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
  JEPS119993  Sherardia arvensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte Near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 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
  SEINET10480000  Sidalcea calycosa Mary Susan Taylor 1984-4-6 Taylor 5404 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC111958  Sidalcea calycosa subsp. calycosa Lowell Ahart 2012-6-5 18164 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 273 Comment
  JEPS97944  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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  CHSC71182  Sidalcea hartwegii Lowell Ahart 1988-6-9 7992 Butte About 300 yds west of the lone oak tree, west of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS117235  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
  POM61856  Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 5512 Butte Berry Canyon (near Clear Creek) from type region Comment
  SEINET3228076 Image available Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 Butte Berry Canyon (Near Clear Creek). Comment
  RSA31852  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte In low ground along ditches on u.S. highway 99 E, 10 miles north of Chico. Hartweg got the type in this region in April, 1847. Comment
  CHSC34950  Sidalcea oregana subsp. spicata R. A. Schlising; M. S. Taylor 1980-7-5 3835 Butte NE of Butte Meadows at first crossing of Butte Creek on Humboldt Road. 1341 Comment
  UCR179390  Silene californica Ann C. Myers 1976-4-25 42 Butte 20 miles north of Oroville County Road B-1 on Fether Falls Trail, 1.5 miles from trailhead 610 Comment
  UC1594719  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine); nw of Lotts Lake, ne of Carr Mine 1798 Comment
  CHSC11855  Silene douglasii var. douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville. Near 'the Summit. 2100 Comment
  CHSC24878  Silene laciniata subsp. californica D. J. Funk 1976-4-15 11 Butte Ca. 50 yd w of Mud Creek. 682 Comment
  CHSC46352  Silene laciniata subsp. californica Lowell Ahart 1989-5-29 6313 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  CHSC101807  Silybum marianum Lowell Ahart 2009-6-12 15847 Butte 5 yards west of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC3759  Sinapis arvensis R. L. Adams 1964-4-12 74 Butte 4 mi. W. Chico, W. Sacramento Ave. and River Rd. on NE quarter. Comment
  CHSC90830  Sisymbrium altissimum Lowell Ahart 2005-5-2 11754 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
  CDA31956  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CHSC35654  Sisymbrium officinale R. E. Preston 1982-4-14 239 Butte N. Table Mountain, ca. 5 mi n of Oroville. 376 Comment
  SBBG119799  Sisyrinchium bellum L. Ahart 2006-7-16 12998 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  CHSC46532  Sisyrinchium elmeri Lowell Ahart 1984-7-19 4759 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. 1584 Comment
  JEPS110130  Solanum americanum Lowell Ahart 2006-9-28 13377 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  JEPS95793  Solanum americanum Lowell Ahart 1999-10-28 8319 Butte about 1 mile southeast of Ord Ferry Ord Ferry; Chico; 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
  CHSC93797  Solanum parishii Lowell Ahart 2006-5-19 12633 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  NY821125  Solanum parishii H. E. Brown 1897-4-15 191 Butte Near Clear Creek 53 Comment
  POM181689  Solanum umbelliferum Williams 1927-4-11 s.n. Butte Near Chico Comment
  CAS-BOT-BC364940  Solidago velutina subsp. californica Lowell Ahart 1977-11-15 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  CHSC38859  Sorghum halepense Vernon Oswald 1983-6-3 623 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET10594641  Sorghum halepense H. E. Brown 1896-10-9 Brown 113 Butte Near Clear Creek 53 Comment
  CHSC43806  Sparganium emersum subsp. emersum Vernon Oswald; Lowell Ahart 1987-7-1 3073 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 largest lake. 1935 Comment
  CHSC30779  Spartium junceum M. S. Taylor; L. Ahart, R. S. Schlising 1980-4-3 2751 Butte Kunkle Reservoir, e side, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  CHSC11060  Spergula arvensis subsp. arvensis Lowell Ahart 1970-2-24 Butte Near Honcut. 45 Comment
  JEPS103601  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte 7 air mi S of Oroville (E side of Lone Tree Road, 1 1/8 mi N of Cox Lane, 3 air mi SW of Palermo) 35 Comment
  CHSC33675  Spergularia bocconi L. Ahart 1981-5-16 2799 Butte Along edge of dirt roads on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC92509  Spergularia rubra Lowell Ahart 2005-12-11 12512 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC11873  Sphenosciadium capitellatum E. B. Copeland 1930-8-30 430 Butte Jonesville 1500 Comment
  CHSC11995  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesvile. 1500 Comment
  CHSC41887  Spiraea douglasii Lowell Ahart 1986-8-15 5383 Butte Near the edge of a meadow, north of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  RSA724890  Spiraea douglasii L. Ahart 2006-8-15 13184 Butte 10 yards W of Willow Creek. About 100 yards SE of the cabin. About 3/4 air mile NW of Jonesville. About 5 air miles NE of Butte Meadows. 1570 Comment
  CHSC44532  Spiranthes porrifolia Lowell Ahart 1988-5-30 6032 Butte About 1/12 mile north of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles south-east of Jarbo Gap. 335 Comment
  SEINET3163884  Spraguea umbellata K. Conger 1907-1 sn Butte Brush Creek Comment
  CHSC2414  Stachys ajugoides var. rigida R. Carter 1965-6-20 244 Butte Found 4 mi. E of intersection of Lumpkin Rd. and Forbestown Rd. on Forbestown Rd., in meadow 25' N of road; ca. 14 mi. E of Oroville. 609 Comment
  CHSC28171  Stachys ajugoides var. rigida J. D. Jokerst 1979-8-12 318 Butte 1.0 mi. W. of W. Branch Feather River along creek. 853 Comment
  CHSC42984  Stachys ajugoides var. rigida L. P. Janeway 1987-6-8 2165 Butte Along French Cr across from mouth of Ram Cr. 617 Comment
  CHSC808  Stachys ajugoides var. rigida M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CDA30221  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte Drainage on east 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 Comment
  CHSC42939  Stachys pycnantha Lowell Ahart 1987-7-17 5826 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC70805  Stachys pycnantha H. Durio 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  UC2055630  Stachys pycnantha O. H. Kappler 1949-7-28 Butte North Fork, Feather River, Route 24. Comment
  CHSC113500  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC26847  Stellaria longifolia M. S. Taylor; M. Hayes 1978-6-24 1637 Butte On Ernies Island in Butte Creek at its jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC104004  Stellaria media Lowell Ahart 2010-5-28 16739 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CHSC107231  Stellaria media Lowell Ahart 2011-6-3 17361 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CHSC5999  Stellaria media M. MacArthur 1968-6-17 205 Butte In lawn NW side of LS bld., Chico State College campus. 60 Comment
  CHSC90186  Stellaria media Robert Kissane 1989-4-18 7 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CHSC45565  Stellaria nitens Lowell Ahart 1975-3-23 714 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC181448  Stellaria obtusa E. B. Copeland 1931-7-18 636 Butte Gravel bars on Butte Creek, Jonesville 1500 Comment
  CHSC70831  Stellaria pallida Vernon Oswald 1998-4-6 8899 Butte North Table Mtn. on the plateau on the south side of Beatson Hollow ca. 1.5 mi west of Cherokee Rd. 323 Comment
  UC1594701  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  SEINET10508392  Stipa lemmonii Lowell Ahart 1983-6-15 Ahart 4054 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  CHSC93348  Streptanthus diversifolius Lowell Ahart 2006-5-3 12555 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  JEPS94722  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UCD163017  Streptanthus diversifolius D. O. Burge 2013-4-12 1389 Butte North Table Mountain, Campbell Creek watershed, just west of Oregon City, accessed via Cherokee Road, parking 5.8 road miles (9.3 km) south of intersection with SR 70. 400 Comment
  CHSC33221  Streptanthus longisiliquus R. A. Schlising 1981-6-11 4085 a Butte North of Cohasset near county line. 1097 Comment
  NY888395  Streptanthus longisiliquus G. Clifton 1997-6-13 35529 Butte Ca. 0.8 km. North of Robley Point 939 Comment
  UCD164178  Streptanthus longisiliquus N. Ivalu Cacho; Sharon Y. Strauss 2010-8-28 IC-SS 177 - Butte Humboldt Rd: 3.2 mi off Hwy 32, going to Butte Meadows. 1417 Comment
  CAS-BOT-BC87437  Streptanthus polygaloides Lowell Ahart 1983-6-30 4178 Butte About 1.5 mile northeast of Concow Res. 550 Comment
  HSC96693  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte N High Sierra Nevada, NW side of Rim Rd. (Ponderosa Way) at S end of Rocky Ridge and S end of its serpentine openings 847 Comment
  HSC96717  Streptanthus polygaloides L. Ahart 2006-5-10 12612 Butte N side of poor dirt road, Bardees Bar Rd., 100 yds. N of poor bridge across N Fork of Feather River at Bardees Bar, 2.5 mi. SW of Pulga 355 Comment
  JEPS106170  Streptanthus polygaloides Lowell Ahart 2004-6-22 11111 Butte On the west margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  SBBG29856  Streptanthus polygaloides L. Constance 1941-5-28 2826 Butte south branch of the Feather River at Magalia 487 Comment
  CHSC92593  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  UC877968  Styrax officinalis var. redivivus A. A. Heller 1915-5-25 11891 Butte ridge above Enterprise; Sierra Nevada 609 Comment
  CAS-BOT-BC48059  Styrax redivivus M. S. Taylor 1978-7-21 1837 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  UCD119109  Styrax redivivus E. D. Phelps 1930-9-23 2151 Butte Pulga. Comment
  CHSC34776  Suaeda calceoliformis L. Ahart 1981-11-6 3227 Butte On banks of small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC234616  Symphoricarpos mollis A. A. Heller 1913-6-7 10802 Butte Near Stirling 1074 Comment
  UC175550  Symphoricarpos mollis var. acutus A. A. Heller 1913-6-7 10802 Butte near Stirling 1074 Comment
  CHSC97760  Symphyotrichum chilense Lowell Ahart 2007-10-30 14507 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  CHSC97013  Tanacetum parthenium L. P. Janeway 2007-6-19 9066 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 2.1 road km south of Ponderosa Dam; 1.2 air km south-southwest of Ponderosa Dam and South Fork Feather River. 396 Comment
  CHSC50103  Taraxacum officinale Vernon Oswald 1990-5-2 4178 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. 1292 Comment
  CHSC62412  Tauschia hartwegii B. Castro 1987-5-18 93 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 463 Comment
  JEPS14511  Tauschia hartwegii Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5606 Butte along Oroville-Concow road 0.9 mi below its junction with Yankee Hill Road 521 Comment
  UC1532344  Tauschia kelloggii Vernon Oswald 1986-4-29 1989 Butte Rim Rd. (Ponderosa Way) 3.5 mi n Jarbo Gap (on Hwy 70) 853 Comment
  CHSC42501  Taxus brevifolia Lowell Ahart 1987-5-22 5682 Butte Near a dirt road, about 1/8 mile north-east of Feather Falls. 1219 Comment
  SEINET10471590  Taxus brevifolia Mary Susan Taylor 1975-5-2 Taylor 551 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 Comment
  SEINET10471597  Taxus brevifolia Austin AUSTIN 755 Butte Mountains north of Chico, Butte County. Comment
  SEINET10471598  Taxus brevifolia Mitzel 1977-4-3 MITZEL 10 Butte Rarely occurs ca 6 m SE of Forest Ranch and 15 yds E of Little Chico Creek. Heavily forested area within mixed coniferous forest. Soil clay loam. 792 Comment
  CHSC44305  Tetrapteron graciliflorum Lowell Ahart 1988-3-25 5930 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, aout 12 miles south-east of Oroville. 76 Comment
  CHSC27970  Thalictrum fendleri M. S. Taylor 1978-7-19 1758 Butte On w side of Upper Scotts John Rd, ca. 3 1/2 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CDA38763  Thalictrum fendleri var. polycarpum L. Ahart 2012-4-3 17946 -A Butte On the south side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  UC336553  Thalictrum fendleri var. polycarpum Edw. L. Greene June 1890 Butte Chico Comment
  POM100481  Thalictrum polycarpum C. C. Bruce 1897-05 s.n. Butte Big Chico. Comment
  CAS-BOT-BC88227  Thysanocarpus curvipes Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham. Comment
  SJSU15298  Thysanocarpus curvipes Lisa Morton 2002-3-30 12 Butte Upper Bidwell Park, along N, Rim Trail at top of butte. 80 Comment
  UC857554  Thysanocarpus curvipes A. A. Heller 1915-3-19 11772 Butte 12 mi ne Chico (near Rock Creek); near Rock Creek Comment
  CAS-BOT-BC88217  Thysanocarpus curvipes Lowell Ahart 1980-3-8 2030 Butte Peter Ahart Ranch. Honcut. 50 Comment
  SEINET10448593  Thysanocarpus curvipes Mary Susan Taylor 1974-3-3 Taylor 65 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  RSA0039384  Thysanocarpus curvipes var. curvipes E. B. Copeland 1903-4-10 3029 Butte Chico. Comment
  UCD116037  Thysanocarpus radians L. Ahart 1975-3-26 719 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET11991223  Thysanocarpus radians Unknown 1890-1 s.n. Butte no further locality Comment
  POM44737  Tonella tenella C. C. Bruce 1897-05 2065 Butte Little Chico. Comment
  JEPS114716  Torilis arvensis subsp. purpurea Lowell Ahart 2008-