Search Results — 2000 specimen records retrieved (1562 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC26687  Abies magnifica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1487 Butte Humboldt Summit, at Butte-Tehama county line, on Butte side. 2133 Comment
  CHSC1769  Abronia latifolia R. Morford 1931-4-30 Butte Salmon Hole, Chico Creek. 152 Comment
  CHSC43579  Acer circinatum Vernon Oswald 1987-4-27 2346 Butte Paradise Lake between the Picnic Area and Doon Creek. 777 Comment
  JEPS119736  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  SEINET10453999  Acer negundo subsp. californicum Mary Susan Taylor Taylor 441 Butte Campus of the California State University, Chico. 61 Comment
  CHSC7127  Acer negundo var. californicum Lynn R. Thomas 1969-3-23 15 Butte N bank Big Chico Creek at junction of Stewart and Bidwell Ave., ca. 0.5 mi w of Chico. 60 Comment
  CHSC43582  Acer saccharinum Vernon Oswald 1987-5-4 2370 Butte Bidwell River State Park ca. 30 ft. n of Big Chico Creek. 36 Comment
  JEPS119750  Acer saccharinum Lowell Ahart 2012-5-17 18087 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC58878  Achillea millefolium Lowell Ahart 1992-7-26 6846 Butte Near a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  UCD128453  Achillea millefolium J. Travis Rubke 1977-4-25 120 Butte around 13 km east of Chico, north of skyway. 600 Comment
  CHSC43184  Achnatherum latiglume Robert Banchero 1981-7-21 623 Butte 2 air mi se of Jonesville, Snow Mt. 2011 Comment
  CHSC109860  Achnatherum lemmonii L. P. Janeway 2012-6-7 10857 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC44461  Achnatherum lemmonii Lowell Ahart 1988-6-21 6058 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap. 426 Comment
  CHSC95032  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC74035  Achnatherum nelsonii subsp. dorei B. Castro; Linnea Hanson 1996-5-24 665 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  CHSC28547  Achnatherum occidentale subsp. occidentale M. S. Taylor 1978-7-18 1707 Butte On top of Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC2432  Achyrachaena mollis R. Carter 1965-5-13 199 Butte Found ca. 7.5 mi. E of Oroville at 6120 W.S.R., ca. 60 yds due E of garage. 274 Comment
  CHSC28137  Achyrachaena mollis J. D. Jokerst 1979-5-6 216 Butte N of Rock Creek, 300 m. n of intersection Rock Creek Road and Cohasset Hwy. 106 Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  POM30563  Achyrachaena mollis C. C. Bruce 1897-05 s.n. Butte [No locality information provided] Comment
  CHSC102163  Acmispon americanus var. americanus Lowell Ahart 2009-6-19 15930 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC113845  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19276 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC42108  Acmispon americanus var. americanus Lowell Ahart 1986-11-14 5479 Butte On the drying margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  UCD103793  Acmispon americanus var. americanus L. E. Hazeltine 1916-7-21 s.n. Butte Chico. Comment
  CHSC96840  Acmispon argophyllus var. fremontii Lowell Ahart 2007-5-29 13937 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CHSC40432  Acmispon brachycarpus Lowell Ahart 1985-5-15 4972 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC97361  Acmispon parviflorus Paul Maslin 2005-5-1 59 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609754E 4410046N. 243 Comment
  CHSC109000  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of the 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. 270 Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CHSC34680  Adiantum capillus-veneris M. S. Taylor 1980-2-17 2364 Butte Along a creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  UC440495  Adiantum jordanii Mrs. R. M. Austin 1896-5-1 242 Butte bluff of Butte Creek Comment
  SEINET10494494  Aesculus californica Mary Susan Taylor 1973-1 Taylor 64 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC600719  Agoseris aurantiaca var. aurantiaca H. F. Copeland 1932-8-19 Butte woods near the head Butte Creek; Jonesville 1800 Comment
  CHSC65323  Agoseris glauca var. monticola Lowell Ahart 1995-10-3 7669 Butte Along the north side of Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. 1767 Comment
  CHSC32602  Agoseris heterophylla J. D. Jokerst 1980-5-6 645 Butte Top of the slope adjacent to Coutelenc Rd ca. 400 m N of its jct with the Skyway. Magalia serpentine. Comment
  CHSC85917  Agoseris heterophylla L. P. Janeway; Gavin Blosser, Adam Henderson, John Hunt 2003-4-15 7757 Butte Northern Sierra Nevada Foothills. Above an ephemeral drainage on south side of Potter Ravine arm of Lake Oroville, 1.8 km north of the Spillway Boat Ramp. 296 Comment
  SEINET3450923  Agoseris heterophylla Unknown 2003-4-10 10053 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  CHSC382  Agoseris heterophylla var. cryptopleura M. Anthony 1954-4-2 Butte Table Mountain. Comment
Read comments
Jan 19 2011
  RSA21543  Agoseris retrorsa C. B. Wolf 1937-5-18 8729 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CHSC50804  Agrimonia gryposepala Vernon Oswald; Lowell Ahart 1990-7-31 4423 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CAS-BOT-BC447797  Agrimonia gryposepala Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  JEPS104036  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  RSA129582  Agrostis exarata H. S. Yates 1936-8-13 6105 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  UCD52297  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  UCD52372  Agrostis exarata L. Y. Leonard 1921-6-16 X 3098 Butte Chico. Comment
  SEINET10789979  Agrostis exarata Lowell Ahart 1982-1 Ahart 3823 Butte On damp red granite soil & on a steep shaded road bank along dirt road by Pinkard Creek, ca. 1/8 mi. N of Lost Creek Reservoir Dam, ca. 1/2 mi NW of Strawberry Valley. Yellow Pine Forest. 1100 Comment
  UCD52309  Agrostis exarata var. monolepis L. Ahart 1982-5-28 3440 Butte E of North Honcut Creek, near Peter Ahart Ranch, 3 miles NE of Honcut. 50 Comment
  CAS-BOT-BC139717  Agrostis gigantea John Thomas Howell 1961-9-22 36709 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CAS-BOT-BC139435  Agrostis hyemalis H. S. Yates 1936-8-13 6109 Butte 2.5 miles south southeast of Butte Meadows. 1493 Comment
  CAS-BOT-BC138853  Agrostis microphylla Lowell Ahart 1980-7-20 2473 Butte At Big Bald Rock. 1100 Comment
  CHSC50809  Agrostis pallens Vernon Oswald; Lowell Ahart 1990-7-31 4418 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  SACT000147  Agrostis rossiae Herbert Copeland 1934-7-9 Butte Comment
  CHSC46077  Agrostis scabra J. D. Jokerst; R. A. Schlising 1982-10-7 1657 Butte Coon Hollow ca 1/2 mile west of where forest service road 27N74 crosses the West Branch of the Feather River. 1676 Comment
  CHSC38781  Agrostis stolonifera Vernon Oswald 1983-6-27 767 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the Diversion weir. 79 Comment
  UC600599  Agrostis stolonifera H. F. Copeland 1932-7-18 Butte Jonesville Comment
  SEINET10510739  Agrostis tenuis Lowell Ahart 1988-9-4 Ahart 6179 Butte On damp rocky soil, on the bottom and sides of Big Kimshew Creek, the creek crosses a large meadow. about 1 air mile north-east of Jones Meadow. Uncommon. Mountain meadow in Red Fir Forest. Comment
  CHSC44914  Agrostis thurberiana Lowell Ahart 1988-7-31 6152 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC49702  Agrostis thurberiana Vernon Oswald 1987-7-16 3119 Butte Slightly w of the Skyway, 1.4 mi s of Inskip. 1426 Comment
  UC814493  Alisma plantago-aquatica A. A. Heller 1914-7-31 11630 Butte about 6 mi nw Chico; Sacramento Valley Comment
  CHSC96944  Alisma triviale Lowell Ahart 2007-7-8 14277 Butte On the south side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  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
  CHSC90192  Allium amplectens Camela J. Ott 1989-4-11 8 Butte Population ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  SBBG40363  Allium amplectens J. Ingram 1960-4-6 299 Butte Neal Rd, ca. 6 mi S of Paradise Comment
  UCD138478  Allium amplectens Eric D. Osman 1978-4-22 3 Butte ca. 5 miles ENE of Chico and 50 feet south of Hwy 32 and Humbolt Road junction. 243 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
  UC725433  Allium campanulatum A. A. Heller 1938-5-28 15113 Butte 22 mi from Oroville (along the Feather River Highway e side of Jarboe Pass); Feather River Highway, Jarboe Pass 609 Comment
  CAS-BOT-BC466713  Allium cratericola Elizabeth McClintock 1965-4-4 s.n. Butte Table Mountain east of Chico 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
  SEINET10839451  Allium membranaceum Mary Susan Taylor 1982-6-24 Taylor 4737 Butte T23N R5E ne/se sec 30. Pulga SW quad. Shaded rdcut on Flea Valley Ridge, ca. l mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. 3600 ft. 1097 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
  SEINET12048118  Allium sanbornii M. Ownbey, Ownbey, G. B. 1946-1 2948 Butte Hwy. 24, 21 mi NE of Oroville, just beyond Yankee Hill Rd Comment
  JEPS100231  Allium sanbornii var. sanbornii Dean Wm. Taylor, Tom Engstrom 2002-7-3 18214 B 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) 975 Comment
  SEINET12328367  Allophyllum divaricatum L. Ahart, Ahart, P. 1983-1 4258 Butte ca 3 mi E of Milsap Bar, ca 25 mi NE of Oroville 1100 Comment
  UC600663  Allophyllum integrifolium E. B. Copeland 1931-6-29 Butte along Butte Creek Jonesville; , Butte Creek 1500 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  UCD110029  Alnus rhombifolia John Steiner 1977-4-23 55 Butte S bank of Chico Creek at e end of Chico Canyon Road. 65 Comment
  UC1564766  Alopecurus aequalis V. Oswald and L. Ahart 1989-8-22 3957 Butte ca. 3.5 air mi. s.e. of Jonesville (Butte Creek House Meadow on e. side of Humbug Rd.); Butte Creek House Meadow 1767 Comment
  SEINET10661090  Alopecurus carolinianus Lowell Ahart 2005-4-14 Ahart 11716 Butte T18N, R2E, southeast 1/4 Section 36. About 200 feet east of the railroad tracks, north of Spruce Street, Gridlley. 28 Comment
  SEINET10511007  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil on floor of rice field, Peter Ahart Ranch, 2 mi. ne of Honcut. 50 Comment
  SEINET10790507  Alopecurus carolinianus Lowell Ahart 1987-5-10 Ahart 5606 Butte On dry bare reddish soil, in an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut about 12 miles south of Oroville. 30 Comment
  UCD55954  Alopecurus saccatus A. A. Heller 1914-4-24 11318 Butte 10 miles from Chico on the Chico-Oroville road. Comment
  CHSC28733  Amaranthus albus R. Schlising 1979-10-7 3496 Butte 0.9 mi s of Chico along Dayton Road. 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
  JEPS110123  Amaranthus albus Lowell Ahart 2006-9-28 13364 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
  JEPS120614  Amaranthus albus Lowell Ahart 2013-11-13 19227 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  JEPS96093  Amaranthus blitoides Vernon H. Oswald and Lowell Ahart 1996-6-10 7751 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the E side of Fish Camp, Riparian Sanctuary. 28 Comment
  CHSC50986  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC83026  Amaranthus californicus Lowell Ahart 2002-10-17 9984 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
  CHSC107232  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  JEPS102422  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the ''Deer Pen'', Chico. 60 Comment
  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
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 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
  SEINET10971204  Ambrosia psilostachya var. californica Mary Susan Taylor 1977-8-19 Taylor 1505 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  SEINET10904067  Amelanchier pallida Mary Susan Taylor 1981-5-13 Taylor 3698 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
  JEPS120552  Ammannia coccinea B. Castro, Margie Graham 2006-8-24 1600 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ~ 100 ft S of dirt road crossing the canal. Comment
  SBBG120071  Ammannia coccinea L. Ahart 2006-8-5 13085 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yards E of Honcut, ca. 12 mi S of Oroville 30 Comment
  SEINET3450928  Ammannia coccinea Unknown 2003-6-23 10300 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  UCR136869  Ammannia coccinea Beecher Crampton 1957-9-17 4631 Butte Sacramento Valley, 5 miles northwest of Biggs, Biggs Rice Experiment Station [955 Butte City Hwy, Hwy 162, 2.5 mi. west of Hwy 99] 30 Comment
  CHSC75968  Ammannia robusta Lowell Ahart; Vernon Oswald 1999-8-13 8168 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
  CHSC26443  Ammi visnaga K. R. Stern 1972-9-19 3784 Butte vic. Eddy Lake, Llano Seco Ranch, ca. 10 mi. sw of Chico, Comment
  CDA42897  Amorpha californica L. Ahart 2012-6-9 18177 Butte On both sides of a small drainage, about 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  JEPS119774  Amorpha fruticosa Lowell Ahart 2012-5-12 18027 Butte About 300 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  SEINET12319577  Amsinckia intermedia J. B. Locey 1975-1 4 Butte ca 50 yds W of Hicks Lane and 100 yds E of Hwy 99, 3 mi N of Chico 59 Comment
  UC614660  Amsinckia intermedia L. Constance, J. L. Morrison 1938-4-30 2178 Butte 8 mi n Chico (between Big and Little Chico Creeks); Sierra Nevada foothills 609 Comment
  UCD119610  Amsinckia intermedia A. A. Heller 1918-4-19 12984 Butte Pine Creek, 12 miles N of Chico. Comment
  UC1609202  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  UC726358  Amsinckia lycopsoides A. A. Heller 1941-3-16 15889 Butte along road 1/2 mi w Pentz Comment
  UC1111640  Amsinckia menziesii var. menziesii Francia Chisaki 1956-4-19 683 Butte 1.5 mi s of West Branch of Feather River (on Nelson Bar Road) Comment
  CHSC117436  Anagallis arvensis Lowell Ahart 2016-5-30 20900 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  JEPS95957  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico: T21N R2E SE1/4 NW1/4 Sect. 5, 230 ft, agricultural area. Localized weed growing in the NE corner of the intersection of farm roads directly S of the headquarters building. 70 Comment
  SEINET10507169  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CAS-BOT-BC137803  Andropogon virginicus var. virginicus Bellue 1942-3-17 s.n. Butte About 2 miles east of Oroville. Thermalitos. Comment
  JEPS98544  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC48684  Anemone oregana Vernon Oswald 1984-4-16 1156 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  UC1246763  Angelica californica A. S. Barclay, R. D. Barbee and K. E. Blum 1962-6-20 1198 Butte 2 mi s of Cohasset (on road to Chico) 762 Comment
  CHSC40890  Antirrhinum leptaleum Lowell Ahart 1985-6-30 5073 Butte About 10 yards south of Forbestown Road, about 100 yards south of intersection with Black Bart Road, about 1 mile west of intersection with Robinson Mill Road. 609 Comment
  CHSC12929  Aphyllon purpureum K. D. Cox 1974-4-5 186 Butte On banks of Lake Oroville, Lunt Ranch on Lunt Rd., off Hwy 70, N of Oroville. Comment
  CHSC96833  Apocynum androsaemifolium Lowell Ahart 2007-5-29 13949 Butte On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC46839  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-18 214 Butte N part of county near Snow Mt. 2072 Comment
  CHSC48312  Arabidopsis thaliana Vernon Oswald 1985-4-5 1702 Butte Cohasset Hwy at Cohasset Springs. On the slope above the horse trough. 286 Comment
  CHSC50104  Arabidopsis thaliana Vernon Oswald 1990-5-9 4193 Butte Chico Meadows, ca. 1 mile north of Butte Meadows. Along the south meadow-forest border east of Scout Rd. 1295 Comment
  RSA4434  Arabis platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CHSC25285  Aralia californica M. S. Taylor 1977-8-15 1421 Butte W branch of Feather River, ca. 1 mi n of Magalia, ca. 1 mi e of the Skyway. 677 Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  CHSC584  Arbutus unedo 1935-4-28 Butte Bidwell grounds, Chico. Comment
  CAS-BOT-BC407719  Arceuthobium abietinum E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1600 Comment
  SEINET1912952  Arceuthobium abietinum R. L. Mathiasen 2010-1 1067 Butte Humboldt Summit 2020 Comment
  CAS-BOT-BC407716  Arceuthobium abietinum Lowell Ahart 1987-10-8 5911 Butte about 1.25 miles S of the Lost Creek Reservoir 1066 Comment
  CHSC44138  Arceuthobium campylopodum V. Oswald; L. Ahart 1988-7-29 3633 Butte Beside the road connecting Humboldt and Humbug Rds. at a point 0.9 mi w of Humbug Rd, ca. 3 mi (air) e of Jonesville. 1804 Comment
  RSA632991  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27463 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CAS-BOT-BC38862  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek east of Chico, especially on the north slope. Comment
  CAS-BOT-BC38875  Arctostaphylos manzanita subsp. manzanita Saichi Kawahara 1968-5-4 390 Butte Paradise, James Ripley's property, Graham road. 640 Comment
  CHSC109107  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC41221  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1985-7-18 2516 Butte Canyon of Rock Cr. NW of Cohasset and Cohasset Ridge. Lower canyon slope between Cohasset Hwy and creek. Comment
  UC535023  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 88 Butte about 12 mi from Chico; Humboldt Grade Comment
  CHSC90075  Arctostaphylos manzanita subsp. roofii Elizabeth A. Ballou 1991-4-23 5 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  UCD52219  Arctostaphylos manzanita subsp. roofii J. I. Mallory 1970-8-20 377 Butte 3/4 mile north of Ramsey Bar; ca. 10 miles northeast of Stirling City. 1402 Comment
  CAS-BOT-BC24299  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC725980  Arctostaphylos mewukka A. A. Heller 1942-1-18 16350 Butte Pentz-Magaia Rd one mi e Bille Road; Paradise Comment
  UC726568  Arctostaphylos mewukka A. A. Heller 1940-2-24 15506 Butte a half mi w Ten Mile House (e of Chico) Comment
  CAS-BOT-BC38564  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CAS-BOT-BC45568  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge e. of the Summit. 2100 Comment
  RSA4476  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  RSA635203  Arctostaphylos patula Jon E. Keeley 1996-6-20 27469 Butte Approximately 1/2 km west of Cohasset. Comment
  UCD51935  Arctostaphylos truei John Thomas Howell 1975-6-15 51110 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  UCD52616  Arctostaphylos viscida John Thomas Howell 1975-6-15 51101 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CAS-BOT-BC47379  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51101 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48290  Arctostaphylos viscida subsp. viscida John Thomas Howell 1955-6-15 30489 Butte 6 miles from Paradise on road to Pentz 426 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
  CHSC109108  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17762 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  SBBG125911  Arctostaphylos viscida subsp. viscida L. Ahart 2010-7-27 16912 Butte ca 100 yards SW of intersection of Forbestown Rd and Black Bart Rd, ca 11 mi E of Oroville 741 Comment
  SEINET10537446  Arenaria Mary Susan Taylor 1981-5-21 Taylor 3793 Butte T23N R5E se sec 21, Pulg quad. E side of Mayaro Rd, ca. 0.5 mi N of Mayaro, ca. 2 mi N of Pulga on Feather River Hwy 70. In decompoed granite gravel embankment; openings of Yellow Pine Forest; 2000 ft. 610 Comment
  CHSC35046  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-20 4101 Butte NE part of county, E of Stirling City and E of Jones Meadow. 1767 Comment
  CDA31420  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville Comment
  CHSC97416  Aristida oligantha Robert Fischer 2006-6-27 1020 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  SEINET10512686  Aristida oligantha Edwin B. Copel 1903-7-27 Copeland 3488 Butte Chico. on bank of sloughs. Comment
  CHSC37505  Aristida ternipes var. hamulosa J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1679 Butte Top of Table Mt. top of the bench that is ca 200 meters north of Phantom Falls (Wedge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  UC687398  Aristolochia californica unknown 1896-2 151 Butte Butte Creek Canyon Comment
  CAS-BOT-BC295840  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 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
  CHSC115681  Asarum hartwegii Emily Meigs Doe; L. P. Janeway 2015-5-28 29 Butte Northern High Sierra Nevada. Plumas National Forest. About 2 mi. NW of Forbestown Rd., about 0.35 mi. NE of its intersection with Ponderosa Way. 829 Comment
  CHSC47042  Asarum lemmonii R. A. Schlising; F. J. Fuller 1986-7-18 4489 Butte NE of village of Feather Falls, along road to Fall River Campground. 1066 Comment
  SEINET10969214  Asclepias fascicularis Mary Susan Taylor 1975-6-25 Taylor 791 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
  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
  HSC44928  Asparagus officinalis J. P. Smith, J. O. Sawyer 1973-4-13 6037 Butte Under cultivation at the J.O. Sawyer Sr. residence in Chico Comment
  CAS-BOT-BC65912  Aspidotis densa Clarence R. Quick 1964-7-9 64 -53 Butte north of Jarbo Gap Comment
  CAS-BOT-BC65916  Aspidotis densa John Thomas Howell 1967-6-22 42612 Butte Magalia 701 Comment
  SDSU6340  Aster oregonensis subsp. californicus D. F. Howe 1960-9-20 2986 Butte North fork of Feather River, 28 miles from Oroville. 518 Comment
  CAS-BOT-BC68694  Athyrium filix-femina var. californicum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd. (Next creek e of Little Ram Creek), 975 Comment
  CHSC101083  Athysanus pusillus Lowell Ahart; John Dittes 2009-3-20 15498 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  JEPS107360  Athysanus pusillus Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  RSA769673  Athysanus pusillus L. Ahart, John Dittes 2009-3-20 15498 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  CAS-BOT-BC17450  Athysanus pusillus Lowell Ahart 1980-3-11 2036 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC55210  Atriplex argentea var. mohavensis Lowell Ahart 1991-9-6 6712 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, west of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  CHSC34024  Atriplex lentiformis L. Ahart 1981-7-26 3008 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking areas, ca. 1/2 mi ne of the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC34770  Atriplex lentiformis L. Ahart 1981-11-6 3217 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UCSB64018  Atriplex lentiformis Ahart, Lowell 1981-7-26 Butte east of the dirt road, about 1 mile north¬west of Pennington Road, about 1/2 mile north¬east of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 30 Comment
  CHSC34049  Atriplex rosea L. Ahart 1981-7-26 3006 Butte On the sides of a large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt 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
  CAS-BOT-BC145881  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Below the high water line of Lake Oroville, near the end of the dirt road that leads to lake Oroville, about 1/12 mile northwest of the West Branch Bridge across Lake Oroville. 271 Comment
  CAS-BOT-BC145882  Avena fatua Lowell Ahart 1980-4-28 2118 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC46433  Avena fatua Lowell Ahart 1989-5-23 6234 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  SEINET3823232 Image available Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction East Gridley Road and CA-70 (Honcut 7.5' Q) 23 Comment
  CAS-BOT-BC66215  Azolla filiculoides Mrs. R. M. Austin 1894-6-1 s.n. Butte Cold Springs, Willow Creek Comment
  SEINET10530429  Azolla mexicana Mary Susan Taylor 1982-4-28 Taylor 4370 Butte T17N R1E se/sw sec 14. Pennington quad. Aquatic in slough, ca. 1/2 mi s of HQ on Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC31523  Azolla microphylla L. Ahart 1976-2-28 1015 Butte Near North Honcut Creek. Ca. 2.5 mi n and 3 mi e of Honcut. 57 Comment
  POM350340  Baccharis glutinosa L. Ahart 1984-10-14 4814 Butte North Honcut Creek, about 3/4 mile north and 2 miles east of Honcut, on Joie Osgood property, about 12 miles south of Oroville. 40 Comment
  RSA769024  Baccharis pilularis L. Ahart 2009-11-19 16544 Butte About 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  SEINET7239573 Image available Baccharis pilularis R. McKee 1919-10-20 s.n. Butte Chico Comment
  POM37535  Baccharis salicifolia C. C. Bruce 1897-03 1820 Butte Little Chico Comment
  CHSC4672  Balsamorhiza deltoidea R. Carter 1966-4-11 335 Butte Found ca. 1 mi E of Bidwell Bar along RR tracks, just W of RR bridge over S Fork. 152 Comment
  CAS-BOT-BC106429  Balsamorhiza sagittata A. A. Heller 1915-6-16 12026 Butte Summit of the Sierra Nevada above Jonesville, on the summit of a ridge 2133 Comment
  SFV3762  Balsamorhiza sagittata M. L. Vincent 1962-4-20 218 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  CHSC42511  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC46284  Barbarea verna Vernon Oswald 1989-5-25 3784 Butte Railroad between Pulga and Mayaro. Along the edge of the railroad right of way. 432 Comment
  CHSC46870  Bassia hyssopifolia Vernon Oswald 1989-9-6 3979 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Soil piled in a waste area along the main north-south ranch road ca. 0.5 mi n of Gridley-Colusa Hwy. 18 Comment
  SEINET10479072  Bassia hyssopifolia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5145 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC23662  Berberis aquifolium var. dictyota M. S. Taylor 1976-4-27 1093 Butte On n side of Ponderosa Way, ca. 2 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. 609 Comment
  CHSC38266  Berberis aquifolium var. dictyota Vernon Oswald 1983-5-11 473 Butte Upper Bidwell Park, Chico, near rim rock on the brush-covered slope s of the Police Pistol Range at the Golf Course. 146 Comment
  CHSC28459  Bergia texana R. A. Schlising 1979-10-14 3507 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC42057  Bergia texana Lowell Ahart 1986-11-9 5445 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
  JEPS122245  Bergia texana Lowell Ahart 2014-9-23 19865 Butte On the southeast part of Horseshoe Lake, near the northwest corner of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 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
  SEINET10904923  Blennosperma nanum Mary Susan Taylor 1974-3-5 Taylor 77 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  UCD114126  Boechera arcuata Robert E. Preston 1985-4-4 511 Butte ca. 0.5 mi SW of Mayaro. 585 Comment
  CHSC34563  Boechera suffrutescens R. E. Preston 1981-7-8 102 Butte On n slope of Humboldt Peak. Butte/Plumas Co. boundary. 1545 Comment
  SEINET10973129  Boisduvalia glabella Mary Susan Taylor 1980-6-29 Taylor 2992 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
  RSA715559  Boisduvalia stricta L. Ahart 2005-5-11 11795 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  SEINET174979 Image available Botrychium simplex E. B. Copeland 1931-6-9 601 Butte Jonesville. 1500 Comment
  SEINET12217138  Boykinia elata Unknown 1985-1 5075 Butte E of the dirt road to the Forbestown Res., about 2-1/2 mi NE of Forbestown 869 Comment
  CAS-BOT-BC145684  Brachypodium distachyon John Thomas Howell 1961-9-22 36753 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. Comment
  CHSC107902  Brachypodium distachyon L. P. Janeway 2011-6-29 10411 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC110141  Brachypodium distachyon L. P. Janeway 2012-4-29 10806 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, upper slope overlooking Big Chico Creek from the south; about 1.8 km east of the powerlines. 183 Comment
  CHSC42850  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  UC1025797  Brachypodium distachyon L. T. Burcham 1954-8-19 303 Butte approximately 6 mi n of Oroville 396 Comment
  UC204947  Brassica nigra A. A. Heller 1914-3-13 11199 Butte low hills 8 mi n of Oroville (in many places in the Sacramento Valley); Sacramento Valley Comment
  CAS-BOT-BC36721  Brassica rapa Lowell Ahart 1983-2-21 3903 Butte Peter Ahart Ranch. About 2.5 miles north and 0.75 mile east of Honcut. 40 Comment
  CHSC45643  Brickellia greenei Vernon H. Oswald 1983-8-24 1019 Butte Humboldt Rd. between Lomo and Butte Meadows, 3.3 mi NE of its jct. with Calif. Hwy 32. 1402 Comment
  JEPS87138  Briza maxima Lowell Ahart 1992-5-9 6767 Butte about 2 air mi n. Oroville (on w side of a small stream, e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  UC203848  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 mi n Oroville (along streams and low places) Comment
  POM109907  Brodiaea californica var. californica C. C. Bruce 1897-05 2126 Butte [No locality information provided] Comment
  CHSC36100  Brodiaea minor R. A. Schlising 1980-6-30 3802 Butte 0.1 miles S of junction of Humboldt Road and Skyway at Butte Meadows. Comment
  CHSC91471  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 748 Comment
  CAS-BOT-BC484555  Brodiaea minor Lowell Ahart 1984-6-10 4686 Butte Along the edge of Hurletojn Swedes Flat Road, about 2 miles south of Forbestown Road, about 12 miles south-east of Oroville, California 450 Comment
  SEINET10472619  Brodiaea minor Mary Susan Taylor 1980-5-15 Taylor 2620 Butte N of Chico along Cohasset Road. Comment
  UCD139154  Brodiaea nana Robert E. Preston 2003-5-11 2129 Butte around 2 miles south of Oroville Airport, on east side of Thermalito Afterbay, along Larkin Road. 30 Comment
  CHSC71462  Brodiaea sierrae Lowell Ahart 1998-7-19 8045 Butte Along Hurleton Swedes Flat Road, about 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC92885  Brodiaea sierrae L. P. Janeway 2005-6-26 8428 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  UCD139175  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte on the southeast side of the dirt road to the Forbestown reservoir, about 1 mile northeast of ForbestownRoad, about 2.5 miles (air) northeast of Forbestown. 883 Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  CAS-BOT-BC156292  Bromus catharticus Lowell Ahart 1979-5-3 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC88915  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  CHSC90832  Bromus catharticus Lowell Ahart 2005-5-2 11767 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC156073  Bromus diandrus Lowell Ahart 1987-5-12 5640 Butte South of Lumpkin Ridge Road, 1.5 mile east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  HSC97191  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley, N of Spruce St., S of railroad bridge. 28 Comment
  CAS-BOT-BC162456  Bromus laevipes John Thomas Howell 1962-6-15 37514 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162459  Bromus laevipes P. B. Kennedy 1914-5-1 s.n. Butte Gradeta Paradice. Comment
  CAS-BOT-BC162461  Bromus laevipes John Thomas Howell; Gordon H. True 1967-6-11 42565 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. 426 Comment
  CAS-BOT-BC162462  Bromus laevipes John Thomas Howell 1968-6-12 44564 Butte Sierra Nevada. Just west of Pulga Bridge, Feather River Canyon. 426 Comment
  SEINET10935012  Bromus laevipes Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4058 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  UC1131196  Bromus madritensis subsp. rubens C. G. Albertus 1933-5-29 9 Butte 1 1/2 mi n of Wick Comment
  CHSC96857  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  UC600593  Bromus orcuttianus E. B. Copeland July 1929 Butte Jonesville Comment
  CHSC78176  Bulbostylis capillaris Lowell Ahart 2000-6-6 8455 Butte On the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses oregon Gulch Creek, about 1/4 mile north of the cemetary, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  CDA5336  Bupleurum lancifolium Mackessy, L. L. Heinrichs 1963-6-19 Butte L. A. Balsley property, Route 1, Box 248, Oroville. 0 Comment
  CHSC105533  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  CAS-BOT-BC438358  Calandrinia ciliata Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC101090  Calandrinia ciliata Lowell Ahart; John Dittes 2009-3-20 15512 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC3958  Calandrinia ciliata Ann Dolder 1967-4-8 Butte Ca. 100 yds e of road on Table Mt., 6 1/2 miles from Oroville. 335 Comment
  CHSC46457  Calandrinia ciliata V. Oswald; L. Ahart 1989-6-27 3835 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In a large meadow along Butte Creek. 1767 Comment
  SBBG17207  Calandrinia menziesii M. Vincent 1961-3-29 28 Butte Bidwell Park, Chico Comment
  CHSC30881  Callitriche marginata J. D. Jokerst 1979-4-2 1166 Butte Top of North Table Mt, ca 200 m S of the intersection of Cherokee Rd and the E edge of section. 396 Comment
  SEINET10457154  Callitriche marginata Mary Susan Taylor 1978-4-14 Taylor 1560 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC50826  Callitriche verna Vernon Oswald 1990-7-23 4380 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. In a pool in the main meadow along the north branch of Butte Creek. 1780 Comment
  CHSC45837  Calocedrus decurrens Lowell Ahart 1973-1-14 147 Butte Along the edge of the dirt road to Forbestown Reservoir, about 3 miles northeast of Forbestown. 762 Comment
  SBBG28817  Calocedrus decurrens E. B. Copeland 1931-7-28 Butte Jonesville, W of North Willow Crk 1650 Comment
  CHSC29726  Calochortus albus J. D. Jokerst 1980-4-17 585 Butte Top of North Table Mt, northern tip. 472 Comment
  HSC38016  Calochortus albus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2476 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  SBBG115423  Calochortus albus D. Alenick 1998-4-25 13 Butte outside of Cherokee, NW of Lake Oroville 381 Comment
  UC3356  Calochortus albus Carl Purdy 1821-1 Butte near Ukiah; Oroville Comment
  CAS-BOT-BC487815  Calochortus coeruleus Lowell Ahart 1973-5-28 s.n. Butte South and East of La Porte 1371 Comment
  RSA21664  Calochortus luteus Carl B. Wolf 1937-5-18 8734 Butte Northern Sierra Nevada foothills, 11 miles below Magalia on Oroville road 152 Comment
  CHSC115456  Calochortus monophyllus M. Sutton; K. Schierenbeck 2013-5-5 50 Butte Deer Creek. 657 Comment
  UC203547  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte 8 mi from Chico (on the Chico-Centerville road; near Butte Creek) Comment
  POM169425  Calochortus monophyllus Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET12048524  Calochortus monophyllus G. C. Russell 1975-1 1 Butte 8.2 km NE of Chico Municipal Airport 325 Comment
  SEINET12053995  Calochortus monophyllus Unknown 4 s.n. Butte no further locality Comment
  POM219307  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CAS-BOT-BC493344  Calochortus superbus A. A. Heller 1914-5-22 11424 Butte Near Richardson Springs Comment
  CHSC40406  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC47587  Calochortus tolmiei Lowell Ahart 1970-5-19 54 Butte Along Doon Grade, north-east of Paradise. 762 Comment
  CAS-BOT-BC494349  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling in fine gravel in open places in the yellow pine and Kellogg oak belt. 1072 Comment
  UC843695  Calochortus vestae Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  CHSC11814  Caltha leptosepala var. biflora E. B. Copeland 1930-6-1 639 Butte Jonesville. In meadow by North Willow Creek. 1550 Comment
  CAS-BOT-BC273294  Calycadenia fremontii H. M. Hall 1914-7-18 9757 Butte Little Chico Creek, 5 mi. E. of Chico 152 Comment
  CHSC112679  Calycadenia multiglandulosa Lowell Ahart 2013-7-1 18817 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  RSA716045  Calycadenia oppositifolia L. Ahart 2005-7-12 12136 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 624 Comment
  UCD129791  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles southwest of Oroville Dam Blvd. Comment
  CHSC110254  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC92937  Calycadenia truncata L. P. Janeway 2005-7-16 8496 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop. 927 Comment
  LA203131  Calycadenia truncata D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 mi. S. of Flea Valley on road to Yankee Hill Comment
  SEINET10863160  Calyptridium monospermum Mary Susan Taylor 1982-6-24 Taylor 4743 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CHSC30088  Calyptridium umbellatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3212 Butte Humboldt Peak, on the top. 2154 Comment
  CAS-BOT-BC436384  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 11374 Butte Near Stirling 1036 Comment
  CHSC95080  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  JEPS105268  Calystegia atriplicifolia subsp. buttensis Dean W. Taylor 1995-8-6 15398 Butte near Concow Reservoir (ca. 6 air miles E of Paradise) along Hoffman Road 0.3 miles West of Concow Road; Lassen National Forest 670 Comment
  JEPS47865  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 10789 Butte near Stirling; near Stirling 1036 Comment
  CAS-BOT-BC221233  Calystegia malacophylla subsp. malacophylla A. A. Heller 1915-6-25 12019 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  SEINET10496588  Calystegia occidentalis Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4071 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
  JEPS118206  Calystegia occidentalis subsp. occidentalis Dean W. Taylor 2004-6-17 19114 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  CAS-BOT-BC496964  Camassia leichtlinii subsp. suksdorfii A. A. Heller 1915-6-11 11959 Butte Butte Meadows in Sierra Nevada, in the yellow pine belt 1219 Comment
  CHSC42808  Camassia quamash subsp. quamash L. P. Janeway 1987-7-5 2437 Butte 1.0 mi SW of Jones Mdw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  SEINET10462927  Campanula prenanthoides Conger 1907-1 CONGER s.n. Butte BRUSH CREEK Comment
  SEINET10463038  Campanula prenanthoides Jones 1897-7-9 Jones s.n. Butte On road from Prattville to Chieo, near Chieo 914 Comment
  SEINET10939006  Campanula prenanthoides Hall Hall 9797 Butte Butte Meadows, transition zone. 1311 Comment
  UC1609329  Campanula scouleri Lowell Ahart 1993-7-22 7078 Butte in campground on w side bridge across Fall River (about 6 air mi ne of Feather Falls) 1036 Comment
  SEINET10458022  Campsis radicans Mary Susan Taylor 1975-6-30 Taylor 823 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC10793  Capsella bursa-pastoris Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119515  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte About 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. Comment
  SEINET10448262  Capsella bursa-pastoris Mary Susan Taylor 1975-3-25 Taylor 419 Butte Chico. Comment
  CHSC28963  Cardamine californica J. D. Jokerst 1980-2-24 451 Butte Along edges of Mud Cr 0.5 mi E of community of Richardson Springs. 243 Comment
  CHSC3641  Cardamine californica Alice L. Stoll 1966-2-28 36 Butte 9.2 miles N.E. of Chico, Upper Bidwell Park. Comment
  CAS-BOT-BC37876  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte In the Canyon of Big Chico Creek. 68 Comment
  CHSC113301  Cardamine oligosperma Lowell Ahart 2014-4-9 19335 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CAS-BOT-BC38057  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC31095  Cardamine pachystigma Leslie Steidl 1980-3-15 2 Butte Ca. .9 mi nw of Lumpkin Rd. on Island Bar Hill Rd and 4 ft s of Island Bar Hill Rd, 22 mi ene of Oroville. 719 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
  CHSC112103  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 Butte Along the poor dirt road, on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  JEPS117697  Carex Lowell Ahart 2010-9-21 17204 Butte Open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 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
  CAS-BOT-BC18461  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2935 Butte Willow Creek where Humbug Road crosses. 1874 Comment
  CHSC100933  Carex amplifolia R. A. Schlising; D. Burk, K. Tarp 1982-7-16 4295 Butte 1219 Comment
  CHSC94395  Carex angustata Lowell Ahart 2006-8-15 13180 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
  JEPS106369  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  CAS-BOT-BC18050  Carex athrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1813 Butte Northeast side of Philbrook Reservoir at PG&E picnic area. 1691 Comment
  CHSC38071  Carex aurea R. E. Preston 1982-6-25 319 Butte Ca. 1.2 mi S of Inskip. 1420 Comment
  JEPS121931  Carex aurea Lowell Ahart 2014-7-16 19677 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC19201  Carex barbarae Lowell Ahart 1977-5-20 s.n. Butte Sierra Nevada. Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  CHSC61508  Carex bolanderi Lowell Ahart 1993-6-26 7008 Butte In a small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC95995  Carex bolanderi L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8824 Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  SEINET11125888 Image available Carex bolanderi Unknown 2009-1 24512 Butte Cascade Range Highlands (CaRH). E side on Concow Road near Clear Creek Ranch, 5 road miles N of route 70. Comment
  CHSC41355  Carex brainerdii R. A. Schlising 1983-6-9 4421 Butte N part of county NE of Lomo along Humboldt Road; Carpenter Ridge. 1341 Comment
  CHSC48545  Carex brainerdii L. P. Janeway 1988-6-14 2780 Butte Ewalt Camp; along W Branch Butte Cr 2.0 mi E from Hwy 32 by dirt road. 952 Comment
  JEPS108149  Carex brainerdii L. P. Janeway 2005-5-29 8406 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
  SEINET10879835  Carex brainerdii Lawrence P. Janeway 1987-7-5 Janeway 2450 Butte T25N, R5E, Kimshew Point quad SW1/4 of sec. 31. 0.4 mi. E on a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. Comment
  SEINET4289436 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CHSC107569  Carex cyrtostachya Lowell Ahart 2011-8-19 17635 Butte On the south side of a good forest road, on the east side of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1252 Comment
  CHSC84272  Carex densa Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10220 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue Chico. 121 Comment
  JEPS113266  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  JEPS116021  Carex densa Lowell Ahart 2009-6-3 15816 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  SEINET8027659 Image available Carex densa L. Janeway, Gog, L 2008-1 3183 (A & B) Butte Bidwell Park. Comment
  JEPS120129  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CAS-BOT-BC19850  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising; B. Castro; F. Jay Fuller 1988-7-11 2989 Butte At Crane Valley (upper Big Kimshew Creek). 1569 Comment
  CHSC104835  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 406 Comment
  CHSC83298  Carex fracta L. P. Janeway; B. Castro 2002-7-7 7618 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  JEPS121960  Carex heteroneura Lowell Ahart 2014-7-7 19574 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC110238  Carex hirtissima L. P. Janeway 2012-6-2 10831 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC110350  Carex hirtissima L. P. Janeway 2013-5-5 11096 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  JEPS87676  Carex hirtissima Lowell Ahart 1994-4-22 7288 Butte about 3 1/2 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC76350  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  CHSC52251  Carex infirminervia L. P. Janeway; R. A. Schlising 1988-7-22 3058 Butte Upper southeast slope of Coon Hollow, near beginning of Coon Hollow Creek. 1920 Comment
  CHSC52266  Carex infirminervia L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3142 Butte Southwest facing slope above Coon Hollow; near dirt road 1.2 mi W of its high point near the county line. 1950 Comment
  SEINET4286140 Image available Carex infirminervia L. Janeway, Gog, L 2008-1 3193 B Butte Just east of Philbrook Resevoir. Comment
  RSA769175  Carex inversa P. F. Zika 2010-5-16 24825 Butte Safford Street near Third Avenue, Oroville, Janeway s station, Sacramento Valley 50 Comment
  RSA725282  Carex jonesii L. Ahart 2006-8-15 13175 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CAS-BOT-BC7777  Carex laeviculmis Lowell Ahart 1984-7-19 4746 Butte about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City, CA 1500 Comment
  CHSC112102  Carex leavenworthii Lowell Ahart 2012-6-14 18190 Butte On the south side of the path, southwest of CARD Community Center,Lower Bidwell Park, Chico. 62 Comment
  CHSC45055  Carex lemmonii Vernon Oswald 1983-7-6 825 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  CHSC45254  Carex lemmonii L. P. Janeway 1988-7-2 2946 Butte Marsh/mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC52248  Carex nudata L. P. Janeway 1987-7-4 2420 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC48553  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2996 Butte At Crane Valley (upper Big Kimshew Cr). 1569 Comment
  UCD140829  Carex senta A. S. Crafts 1935-5-15 s.n. Butte Yankee Hill, Ponderosa Way. 914 Comment
  UC1108038  Carex serratodens H. F. Copeland 1932-7-24 Butte by small stream running from w into Butte Creek Meadows Comment
  CAS-BOT-BC116746  Carex subfusca L. P. Janeway; C. A. Janeway 1986-8-31 1807 Butte Along Scotts John Cr at rd 26N27 crossing 3 mi from Humboldt Rd. 1737 Comment
  CHSC46990  Carex subfusca S. C. Morey 1983-8-4 703 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA550452  Carex subfusca R. Tallent 1987-8-18 956 Butte Lassen National Forest; Along Feather River N of Stirling City. 1037 Comment
  SEINET7486528 Image available Carex subfusca Peter F. Zika 2009-6-17 24515 Butte below Concow Road 10 road miles above (N of) Route 70 1100 Comment
  SEINET8413043  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows, 1219 Comment
  CHSC44838  Carex whitneyi L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3077 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  SEINET10785808  Carex xerophila John Thomas Howell, Gordon H. True 1969-4-9 Howell 45490 Butte Magalia. 701 Comment
  CHSC4603  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus, Chico. Comment
  JEPS18864  Castilleja Rimo Bacigalupi with G. T. Robbins and Fran Chisaki 1956-4-19 5600 Butte w limits (lower) Paradise 457 Comment
  CHSC115404  Castilleja affinis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CDA42889  Castilleja affinis subsp. affinis L. Ahart 2012-6-2 18127 Butte Along the sides of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC115357  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to the old road and Highway 32, about 6 miles (air) northeast of Chico. 377 Comment
  CHSC114940  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20038 Butte On the east side of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70, about 11 miles (air) north of Oroville. Foothill woodland. 292 Comment
  CHSC1697  Castilleja applegatei subsp. pinetorum M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 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
  SEINET10865280  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-5-6 Taylor 1583 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC47694  Castilleja campestris subsp. campestris Lowell Ahart 1978-5-1 1689 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC43193  Castilleja lacera R. A. Schlising 1981-4-27 4042 Butte S of Cohasset. Immediate roadside of Cohasset hwy, 2.9 mi NE jct with road to Richardson Springs. 201 Comment
  CHSC37278  Castilleja miniata M. S. Taylor; L. Ahart 1981-8-16 4195 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  SEINET10549443  Castilleja pruinosa Lowell Ahart 1985-5-15 Ahart 5002 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC11071  Castilleja subinclusa Lowell Ahart 1968-3-14 Butte Swede's Flat Road, near Honcut Creek. 304 Comment
  POM43184  Castilleja subinclusa C. C. Bruce 1897-06 1938 Butte Little Chico. Comment
  SEINET14168216  Castilleja subinclusa B. Nightingale 1961-4-29 52 Butte Near Butte Creek, ca 6 miles E of Chico. 61 Comment
  POM44384  Castilleja subinclusa C. C. Bruce 1897-05 1940 Butte Butte Creek. Comment
  CAS-BOT-BC195579  Catapodium rigidum Lowell Ahart 1982-5-3 3406 Butte Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut 50 Comment
  CHSC39793  Ceanothus cuneatus Eloise Gallatin 1935-5-4 Butte Below Forest Ranch. Comment
  HSC59635  Ceanothus cuneatus J. P. Smith 1973-3-22 5933 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  SEINET10493627  Ceanothus cuneatus Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  SEINET10493632  Ceanothus cuneatus Mary Susan Taylor 1973-1 Taylor 56 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC38636  Ceanothus cuneatus var. cuneatus Vernon Oswald 1983-2-26 102 Butte Upper Bidwell Park, Chico, on the north slope at the level of the e end of Horseshoe Lake. 137 Comment
  CHSC39784  Ceanothus integerrimus Eloise Gallatin 1935-5-2 Butte Paradise. Comment
  RSA399895  Ceanothus integerrimus M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  UC175534  Ceanothus integerrimus A. A. Heller 1913-6-7 10827 Butte west Branch of the North Fork of the Feather River near Stirling 914 Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC47957  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  CAS-BOT-BC51734  Ceanothus lemmonii C. R. Quick 1941-6-8 41 -10 Butte about 2 miles S. of Big Bar Mt. Comment
  CHSC42001  Ceanothus lemmonii Lowell Ahart 1973-4-15 202 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  CHSC52466  Ceanothus prostratus Kate A. Hanson 1977-4-18 Butte Ca. 0.8 km E of hwy 32, ca 8 km ENE of Forest Ranch. Comment
  CHSC55405  Ceanothus prostratus Charlie Crannell 1991-4-13 1 Butte Forest Ranch; west of intersection of Doe Mill Road and Garland Road. 865 Comment
  RSA300948  Ceanothus prostratus D. C. Michener 1982-7-28 4140 Butte Along 32, 3.5 miles NE of Forest Ranch (at Nopel road), Yellow pine forest Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC20725  Ceanothus velutinus M. S. Taylor 1975-8-31 898 Butte Scattered on n side of Humboldt Rd, ca. 3 ft w of Butte Creek, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CAS-BOT-BC52419  Ceanothus velutinus var. velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville 1550 Comment
  CHSC100466  Celtis sinensis Lowell Ahart; John Dittes 2008-11-14 15447 Butte On the north side of the deer pen, 10 yards east of the small storage building, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC294  Centaurea solstitialis D. Bower 1953-7-23 Butte La Llano Seco. Rice Field. 30 Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  JEPS117256  Centaurium muehlenbergii Lowell Ahart 2010-6-20 16829 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  POM76325  Centaurium muehlenbergii C. C. Bruce 1897-05 2007 Butte [Unspecified] Comment
  CDA34755  Centaurium tenuiflorum L. Ahart 2009-6-19 15943 Butte North of trail to pond and table, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC105269  Centaurium tenuiflorum Lowell Ahart 2010-6-20 16828 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  CHSC38448  Centaurium tenuiflorum Vernon Oswald 1983-6-7 643 Butte Upper Bidwell Park, Chico, ca. 400 ft n of Upper Park Rd. at Diversion Dam. 134 Comment
  JEPS46925  Centaurium venustum H. A. Dutton 1921-1 Butte e of Chico Comment
  SEINET10454837  Centaurium venustum subsp. abramsii Mary Susan Taylor 1980-6-14 Taylor 2874 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CDA38238  Cephalanthus occidentalis G. F. Hrusa, S. Dubiel 2012-9-9 18508 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  CHSC42959  Cerastium glomeratum Lowell Ahart 1987-7-3 5771 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS107331  Cerastium glomeratum Lowell Ahart 2005-4-14 11715 -A Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS117507  Cerastium glomeratum Lowell Ahart 2010-5-22 16723 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 387 Comment
  RSA0118720  Cerastium glomeratum Lowell A. Ahart 2014-4-16 19363 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  UC120354  Cerastium glomeratum Mrs. R. M. Austin Apr 1899 105 Butte Butte Creek Comment
  CAS-BOT-BC388255  Cerastium glomeratum A. A. Heller 1915-5-28 11915 Butte Near Cohasset Comment
  LA45608  Cercis occidentalis A. A. Heller; 1914-3-12 11194 Butte the canyon of Big Chico creek E of Chico 68 Comment
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Feb 17 2016
  RSA754857  Cercis occidentalis L. Ahart 2009-4-26 15620 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  UC1127838  Cercocarpus betuloides var. betuloides J. E. Sowder 1933-8-4 128 Butte slope above De Sable Power House 457 Comment
  CHSC35668  Chaenactis glabriuscula var. heterocarpha R. E. Preston 1982-4-22 259 Butte 100 ft n of Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 289 Comment
  CHSC54297  Chaenactis glabriuscula var. heterocarpha Vernon H. Oswald 1991-6-5 4645 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  SEINET10475244  Chaenactis glabriuscula var. megacephala Mary Susan Taylor 1976-4-27 Taylor 1099 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  UCD126572  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville. 1550 Comment
  CHSC102522  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 41 Comment
  CHSC31695  Chamaesyce maculata L. Ahart 1973-6-28 258 Butte Near a creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47427  Chamaesyce maculata Lowell Ahart 1984-8-19 4786 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC61314  Chamaesyce maculata Lowell Ahart 1993-7-22 7080 Butte Along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS115727  Chamaesyce maculata Lowell Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  UC1586408  Chamaesyce nutans Vernon H. Oswald and Lowell Ahart 1991-8-28 4850 Butte 3.5 mi ne Biggs (Rice Experiment Station on the s side of Hwy 162) 30 Comment
  JEPS115728  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CHSC113147  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 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
  CHSC97689  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2007-11-3 14564 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS95806  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 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
  SEINET10943542  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-15 Ahart 16285 Butte T17N, R4E, southeast 1/4 Section 4. Normal size plant, a broken stem produced a small drop of white sap, about 200 stem drops make up the sample, on dry gravelly soil, in a large wash, Peter Ahart Ranch, about 1 1/2 miles south of Oroville. Valley Grassland. 34 Comment
  SEINET10529949  Cheilanthes californica Mary Susan Taylor 1981-2-11 Taylor 3381 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  CHSC43574  Cheilanthes gracillima Vernon Oswald 1984-7-2 1345 Butte 2.5 mi se of the junction of 26N27 and Humboldt Rd. ne of Jonesville. 1767 Comment
  UC474227  Cheilanthes gracillima H. F. Copeland 1920-5-22 Butte Jonesville 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
  JEPS108955  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 2006-9-11 13281 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CDA3042  Chenopodium botrys L. P. Janeway, B. Castro 1999-6-4 6450 Butte Sacramento Valley; East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. Comment
  SEINET10479016  Chenopodium botrys Lowell Ahart 1985-5-6 Ahart 4936 Butte Bottom of Lindo Channel, about 1/10 mile east of Longfellow Ave., Chico. Comment
  SEINET10479019  Chenopodium botrys Lowell Ahart 1983-8-16 Ahart 4285 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  RSA29941  Chenopodium pumilio I. L. Wiggins 1928-9-9 3344 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CDA34556  Chenopodium strictum var. glaucophyllum L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15411 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  CDA34648  Chenopodium strictum var. glaucophyllum L. Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. Comment
  JEPS119926  Chenopodium vulvaria Lowell Ahart 2012-10-20 18488 Butte On the south side of the paved park road and Big Chico Creek, about 50 yards east if Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  POM161685  Chimaphila menziesii E. B. Copeland 1929-07 s.n. Butte Jonesville. 1550 Comment
  UC474265  Chimaphila menziesii E. B. Copeland 1930-7-21 Butte hill above hotel Jonesville Comment
  CHSC93990  Chimaphila umbellata R. D. Fischer 2004-6-20 778 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In the western woods above the pond. 1371 Comment
  CHSC94161  Chimaphila umbellata Lowell Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  UC426925  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville Comment
  CDA38838  Chimaphila umbellata Vernon H. Oswald & Lowell Ahart 1998-8-11 9462 Butte USFS 25N95 to Upper Wildcat Creek ca. 0.3 mile north of Four Trees-Coyote Gap Road. Comment
  JEPS106015  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
  UCD59685  Chloris virgata Morton D. Morse 1955-8-19 s. n. Butte foothills near Pentz. Comment
  CHSC87541  Chlorogalum angustifolium R. D. Fischer; Jenny Marr 2004-4-27 137 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at north end of Disk Golf Course, near the top of the north-connecting trail going down toward Guardian Trail. Scattered throughout Disk Golf Course. 381 Comment
  CHSC84240  Chondrilla juncea Lowell Ahart 2003-7-10 10372 Butte On the north slope of Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 296 Comment
  CHSC10757  Chorizanthe membranacea Lowell Ahart 1962-5-28 Butte Ahart Ranch, Honcut. 39 Comment
  CHSC45845  Chorizanthe membranacea Lowell Ahart 1975-6-5 783 Butte On dredger piles along North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  UCD99935  Chorizanthe stellulata Glen Holstein 1980-5-4 103 Butte ca. 4 miles southwest of town of Paradise, immediately north of Skyway Road above junction of Butte and Little Butte Creeks. 396 Comment
  CAS-BOT-BC36373  Chrysolepis sempervirens W. R. Dudley 1895-8-11 s.n. Butte near Butte Summit R.R. Station Comment
  SEINET10872095  Cichorium intybus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4125 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC288039  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 Comment
  CAS-BOT-BC288036  Cirsium occidentale var. venustum Lowell Ahart 1980-5-25 2328 Butte Along Swedes Flat Road near Bangor, Sierra Nevada 320 Comment
  SEINET10474562  Cirsium pastoris Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4242 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CAS-BOT-BC228750  Cistanthe umbellata A. A. Heller 1913-6-7 10804 Butte Near Stirling 1074 Comment
  CAS-BOT-BC228757  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC163543  Clarkia arcuata Frances Brown 1935-5-1 s.n. Butte Mountains near Durham Comment
  CHSC84865  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7809 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  UCD104349  Clarkia biloba subsp. brandegeeae Joseph M. DiTomaso 1976-5-23 472 Butte Lake Oroville, peninsula at south end. 274 Comment
  JEPS105625  Clarkia concinna subsp. concinna L. P. Janeway, John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge 290 Comment
  CHSC1101  Clarkia gracilis subsp. albicaulis V. Holt 1942-6-1 Butte Forest Ranch. 548 Comment
  CHSC71307  Clarkia gracilis subsp. albicaulis Vernon Oswald 1998-6-24 9238 Butte Hwy 32 at Crown Pt. Rd between Chico and Forest Ranch. 573 Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC71159  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4681 Butte Granite Ridge; along Concow Road 0.1-0.2 mi north of junction; east side of ridge top, above Camp Creek. 1310 Comment
  CHSC46134  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte In the cutbank at the little building at the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC84165  Clarkia mosquinii Lowell Ahart 2003-6-30 10327 Butte Near the small stream, on the west side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  SEINET10453160  Clarkia purpurea Mary Susan Taylor 1976-4-27 Taylor 1082 Butte Abundant in Valley Grassland, ca. 50 ft E of Cohasset Hwy, ca. 3 mi N of Chico. 61 Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  JEPS43553  Clarkia purpurea subsp. quadrivulnera W. L. Jepson 1934-5-4 16619 Butte 2 1/2 mi ne Cana Comment
  CHSC26849  Clarkia rhomboidea M. S. Taylor; M. Hayes 1978-6-24 1642 Butte On n side of Old Humboldt Rd at jct of Butte Creek and Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC59111  Clarkia rhomboidea L. P. Janeway 1991-6-1 3976 Butte East-facing cut-bank of Dark Canyon Road 0.3 mi south of Big Bend Road/Parkhill. Near canyon bottom. 573 Comment
  HSC95491  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mi. NW of Oak Point, 0.8 mi. E of Transfer Ridge on the E side of Breakneck Canyon, 1.5 mi. N of W Branch Feather River 1402 Comment
  UC1143258  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 758 Butte 0.8 mi s Arch Rock (Hwy. 24); Feather River Comment
  SEINET10453162  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4651 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
  SEINET10841118  Clarkia rhomboidea Lowell Ahart 1984-6-8 Ahart 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CAS-BOT-BC165443  Clarkia unguiculata A. A. Heller 1913-5-28 10767 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  CHSC111123  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disk Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. 331 Comment
  UC107952  Clarkia unguiculata Mrs. R. M. Austin Apr. 1896 104 Butte Little Chico Comment
  CHSC56066  Claytonia palustris L. P. Janeway 1988-7-29 3103 Butte Along Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). 1325 Comment
  SBBG86232  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte south bank of Jones Crk, 0.4 km E of Jonesville Hotel, Jonesville; ISOTYPE 1550 Comment
  CHSC34765  Claytonia parviflora subsp. parviflora S. M. Turek 1980-4-21 19 Butte Ca. 5 yds s of Humboldt Rd, 1.7 mi e of E. Monte Rd, 50 yds s of Hwy 32, 1 mi e of Chico. 71 Comment
  CAS-BOT-BC439773  Claytonia perfoliata Lowell Ahart 1984-6-10 4711 Butte About 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  SEINET11933239  Claytonia perfoliata C. W. Dawson 1978-1 20 Butte 1.5 mi S of Paradise and jct of Pearson Rd and Clark Rd (Hwy 191), 800 ft NNW of Hwy at top of ridge 335 Comment
  CHSC55395  Claytonia perfoliata subsp. perfoliata C. G. Morris 1991-4-18 15 Butte Small population 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  CHSC82714  Clematis lasiantha Tara Morgan 2002-4-23 28 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwall Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  UCD95581  Clematis ligusticifolia L. and P. Alhart 1993-7-24 4215 Butte Western Virgin's Bower. At the Forbestown Reservoir, ca. 5 mi NE of Forbestown Reservoir, Yellow Pine Forest. 450 Comment
  SEINET10833593  Clematis ligusticifolia Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4215 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  SEINET12092019  Clematis ligusticifolia L. Ahart, Ahart, P. 1983-1 4215 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca 5 mi ne of Forbestown. Yellow Pine Forest 450 Comment
  CHSC50061  Collinsia heterophylla Lowell Ahart 1990-4-8 6449 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 39 Comment
  CHSC90180  Collinsia heterophylla M. K. Hancharick 1989-4-18 17 Butte End of Centennial Ave., vic. gate at s end of Fern Banks, se corner Bidwell Park, s bank of Big Chico Creek. 88 Comment
  CHSC90230  Collinsia heterophylla Michael J. McNairn 1989-4-22 11 Butte On cliff s side of Big Chico Creek, S of golf course, 3/4 mi. e of 5-mile swimming area, Bidwell Park, E Chico. 79 Comment
  UC885592  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville (e of Marysville); Feather River Highway Comment
  CHSC39679  Collomia heterophylla Lowell Ahart 1983-6-21 4070 Butte On the road cut along Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  CHSC42553  Collomia heterophylla Lowell Ahart 1987-5-22 5661 Butte South of the lava cap, about 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC478478  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte on gravel bars along creek Jonesville, Butte Creek 1500 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
  RSA699521  Comandra umbellata subsp. californica R. D. Fischer 2004-4-11 60 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side addition along Hwy 32. Located along 10 Mile House Rd where it parallels Chico Creek. Creek side of rd. 229 Comment
  SEINET10898570  Comandra umbellata subsp. californica Lowell Ahart 1985-5-15 Ahart 4983 Butte East along the dirt road, about 1/2 mile north-east of Concow Reservoir. Comment
  JEPS115279  Conyza floribunda Lowell Ahart 2008-11-4 15397 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 263 Comment
  SBBG128102  Cordylanthus pilosus subsp. hansenii L. Ahart 2010-9-12 17150 Butte just above the high water line of Lake Oroville, ca. 150 yards N of the S Fork of the Feather River, ca. 50 yards E of Sucker Crk, ca. 0.25 mi NW of the Ponderosa Dam 243 Comment
  CHSC3311  Cornus florida M. Gregg 1966-4-13 65 Butte CSC campus behind the dining hall. Chico. Comment
  CHSC27211  Cornus florida var. rubra P. Moyer 1972-5-1 224 Butte CSUC Campus. N side Chico Creek, e side entrance Gus Magnolis Bridge. 60 Comment
  CAS-BOT-BC211987  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch, west side of the Sierra Nevada 1036 Comment
  CHSC20047  Cornus nuttallii M. S. Taylor 1975-4-17 480 Butte Corner of Arcadian and Sacramento Sts, Chico. Comment
  SEINET263495  Cornus nuttallii R. J. Shaw 1993-5-23 5095 Butte Along Hwy 32 at mile marker 31 1000 Comment
  CAS-BOT-BC209586  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  UC725377  Cornus sericea subsp. sericea A. A. Heller 1938-7-20 15282 Butte 7 mi. e. on the Humbug Rd. Chaparral (upper end of Snag Lake) 1524 Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  CAS-BOT-BC401863  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC43140  Corydalis caseana subsp. caseana R. Banchero; R. Schlising 1981-7-25 630 Butte Jones Meadow Ca 5 air miles e of Inskip. 1842 Comment
  CHSC102995  Cotoneaster lacteus Lowell Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  RSA0076090  Cotoneaster lacteus L. Ahart 2009-11-19 16532 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 0.5 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  JEPS115694  Cotoneaster pannosus Lowell Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  CHSC106880  Cotula australis Lowell Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC65991  Crassula aquatica Vernon H. Oswald 1996-4-20 7405 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W end of the S paddock of Tract 7, Sanctuary II. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 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
  CHSC36841  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte On roadcut, w side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC84052  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SEINET10500612  Crucianella angustifolia Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4037 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  UC1594718  Cryptantha affinis Lowell Ahart 1992-7-29 6871 Butte about 0.75 mi nw Lotts Lake (about 1 mi ne of Carr Mine) 1798 Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  SBBG128861  Cryptantha flaccida G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte entrance to Oroville Wildlife Area, 0.2 mi W of CA-70, near the Feather River 46 Comment
  SEINET10531457  Cupressus macnabiana Mary Susan Taylor 1981-4-8 Taylor 3503 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC11910  Cuscuta californica var. papillosa E. B. Copeland 1931-7-17 675 Butte Jonesville. 1650 Comment
  CDA42920  Cuscuta campestris L. Ahart 2012-8-22 18423 Butte On the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Central House Road, about 2 miles (air) northwest of Honcut. Comment
  HSC66334  Cuscuta indecora M. S. Taylor 1980-6-7 2791 Butte SW corner of Hwy. 162 and Aquas Frias (Goodspeed-Watt Rd. on some maps), 15 mi. S of Chico 46 Comment
  JEPS124150  Cynodon dactylon Lowell Ahart 2015-11-7 20622 Butte About 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS127199  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south Oroville. Comment
  SEINET10515390  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte 4-5 mi S of junction of Chico-Butte Hwy & Ord Ferry Road, 20 mi S of Chico on both sides of Chico-Butte Hwy; dried up Freshwater Marsh and slough area. Comment
  CHSC71211  Cynosurus echinatus Lowell Ahart 1998-6-3 7972 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC114803  Cyperus J. Zaninovich 1984-9-24 4810 Butte Growing on dry bare soil along the edge of Middle Honcut Road, 35 Comment
  SEINET13711403  Cyperus acuminatus Lowell William Ahart, Lowell William Ahart 1999-1 8142 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  CDA38929  Cyperus difformis L. Ahart 2002-9-7 9930 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CHSC45260  Cyperus difformis L. P. Janeway 1986-9-20 1879 Butte Gravel bar along east side of Sacramento River just SE of the Ord Ferry Rd bridge. 28 Comment
  JEPS120026  Cyperus difformis Lowell Ahart 2012-10-20 18513 Butte On the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10466974  Cyperus difformis Mary Susan Taylor 1979-11-11 Taylor 2282 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  UCD141013  Cyperus difformis E. M. Johnston 1915-1 W- 132 J Butte Biggs. Comment
  CHSC4294  Cyperus eragrostis R. Jaegel 1966-5-16 Butte Drainage of Golf Course Lake, Upper Bidwell Park. Comment
  CHSC4368  Cyperus eragrostis M. Hillier 1966-5-29 Butte In dry creek bed along Manzanita Ave. Chico. Comment
  CAS-BOT-BC114596  Cyperus eragrostis Forman Taylor McLean 1921-9-25 s.n. Butte Weed in rice fields, Nelson. Comment
  CAS-BOT-BC114599  Cyperus eragrostis L. P. Janeway 1986-10-19 1937 Butte N side Durham-Pentz Rd, on Butte College agricultural land. 82 Comment
  CHSC116125  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  SEINET10938647  Cyperus erythrorhizos Mary Susan Taylor Taylor 836 Butte Bidwell Park, Chico. Comment
  UCD141048  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  UCD141051  Cyperus erythrorhizos P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unkown. Comment
  CHSC68393  Cyperus esculentus L. P. Janeway 1986-10-15 1925 Butte In the City of Chico; weedy area along fence between plant nursery and Memorial Way (across from Bidwell Junior High School). 60 Comment
  JEPS95920  Cyperus esculentus Lowell Ahart 1999-8-13 8141 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
  CHSC43283  Cyperus flavescens Lowell Ahart 1987-8-30 5865 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
  CHSC45145  Cyperus flavescens Lowell Ahart 1975-8-21 957 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 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
  JEPS95785  Cyperus flavescens Lowell Ahart 1999-8-13 8143 Butte about 1 mile southeast of 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
  UCD16182  Cyperus flavicomus Joe DiTomaso 2000-8-30 s.n. Butte University of California Biggs Rice Research Station, near corner of Riceton and Hamilton Roads. Comment
  CHSC76405  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-10-3 8287 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
  JEPS98289  Cyperus niger Lowell Ahart 2000-6-17 8489 Butte In a large spring like area, W of the lone oak tree, W of the cow chute and the large parking area on the W side of Cherokee Road, North Table Mountain, ca 7 miles (air) N of Oroville. 403 Comment
  CHSC56607  Cyperus squarrosus L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2513 Butte Bed of vernal pool near the southernmost pond on the slopes on the south side of Coon Hollow. 1767 Comment
  SD405  Cyperus squarrosus E. B. Copeland 1931-7-17 Butte Jonesville; abundant on drying bottoms of vernal pools. 1700 Comment
  UCD141100  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CHSC68417  Cyperus strigosus L. P. Janeway 1986-10-19 1932 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  JEPS98272  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte 4 air miles SW of Oroville (Oroville Wildlife Area, 1/2 mi W of Pacific Heights Road) 42 Comment
  UC1563285  Cyperus strigosus unknown 1990-10-3 6614 Butte ca. 1/4 mi. n.e. of Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); E. Fork Canyon Creek 243 Comment
  SEINET10470084  Cypripedium fasciculatum Mary Susan Taylor 1981-5-27 Taylor 3803 Butte T23N R3E ne sec 13, Paradise SE quad. W side of Paradise Lake, ca. half way between Butte Creek entrance to the north and dam to the sough, ca. 50 ft up from lake edge, ca. 3 air mi N of Magalia. Dense Yellow Pine F; 2600 ft. 792 Comment
  CAS-BOT-BC201005  Cytisus scoparius John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54411 Butte Madrone Lake near Berry Creek 600 Comment
  CHSC102835  Dactylis glomerata Lowell Ahart 2009-6-19 15916 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  SEINET10968264  Dactylis glomerata Mary Susan Taylor 1978-7-21 Taylor 1815 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  UC1609048  Danthonia californica Lowell Ahart 1993-8-29 7121 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  SEINET4566566  Danthonia californica R. McKee, H. Westover 1918-6-15 814860 Butte Paradise Comment
  UCSB34189  Danthonia unispicata Reisentz, Paul 1979-5-13 Butte 4 mi E on Cherokee Rd from Hwy 70 Comment
  CHSC29002  Darmera peltata M. S. Taylor 1980-3-19 2387 Butte In Macabes Creek, in Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC116979  Datura wrightii Matthew Forster 2013-5-20 Butte 25 meters on east side of Sacramento River, along River Rd., Chico. 38 Comment
  LA212402  Daucus pusillus Jim R. Shevock; 1972-5-19 1768 Butte N. of Lake Orvoville, Hwy. 70. 91 Comment
  CHSC48689  Delphinium patens subsp. patens Vernon Oswald 1985-5-2 1745 Butte Concow Rd. 1.1 mi sw of its jct. with Ponderosa Way. 853 Comment
  RSA517003  Delphinium variegatum Barbara J. Ertter 1986-4-13 5886 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  CHSC39260  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte Along edge of dirt road, 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River. Section 10. 1100 Comment
  CHSC43133  Deschampsia cespitosa Robert Banchero 1981-7-18 596 Butte Butte Creek House, ca 3 air mi ne of Jonesville. Meadow. 1755 Comment
  RSA424685  Deschampsia danthonioides Aaron Liston, M. A. Blumler 1987-4-24 658 -8 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  UCD62771  Deschampsia danthonioides P. B. Kennedy 1914-5-1 s.n. Butte Chico. Comment
  CAS-BOT-BC201741  Deschampsia elongata Lowell Ahart 1987-7-8 5792 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CAS-BOT-BC201742  Deschampsia elongata Vernon Oswald; Lowell Ahart 1987-7-1 3062 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
  UC1609007  Deschampsia elongata Lowell Ahart 1993-9-13 7233 Butte ca. 1 mi. s.e. Butte Meadows (along Bolt Creek); Bolt Creek 1325 Comment
  SEINET10933470  Deschampsia elongata A. Arthur Heller 1917-7-26 Heller 12846 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  SEINET10866368  Dianthus armeria Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4173 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC2518  Dicentra formosa W. Fitzwater 1958-4-26 Butte Below Forest Ranch, ca. 15 mi. NE of Chico. Comment
  UC1362269  Dicentra formosa Kingsley R. Stern 1964-6-10 2104 Butte ca mi 11 mi e Chico e city limits (ca 2 mi s of Highway 32) Comment
  CAS-BOT-BC500056  Dichelostemma capitatum Jim Riley 1923-4-2 s.n. Butte Richardson Springs/. Comment
  CAS-BOT-BC500059  Dichelostemma capitatum Helen Edwards 1917-6-1 s.n. Butte DeSabla Comment
  CAS-BOT-BC500061  Dichelostemma capitatum Saichi Kawahara 1968-5-4 387 Butte N. Oak Woodland, James Ripley's property's property, Graham Road, Paradise. 640 Comment
  CAS-BOT-BC500062  Dichelostemma capitatum Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 64 Butte S. of Paradise on Cherokee Rd at 7.5 mile marker 350 Comment
  CAS-BOT-BC500799  Dichelostemma capitatum Lowell Ahart 1988-1-5 5979 Butte On the west side of the Poe Power House Road, about 1/2 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 396 Comment
  UCD139225  Dichelostemma capitatum Craig Martz 1982-3-22 30 Butte east side of State Route 191 at intersection of Pentz Road. 91 Comment
  CHSC40625  Dichelostemma capitatum subsp. capitatum Ahart; Jokerst 1985-3-24 4864 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  POM109913  Dichelostemma capitatum subsp. capitatum C. C. Bruce 1897-02 2127 Butte [No locality information provided] Comment
  UCD139211  Dichelostemma capitatum subsp. capitatum Kathy Corson 1969-4-6 2 Butte around 10 miles east of Chico on State Highway 32. Comment
  CHSC56815  Dichelostemma multiflorum Robert A. Schlising 1963-6-7 2618 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CAS-BOT-BC501094  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  POM215700  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor. Comment
  SEINET10472709  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2573 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  SEINET10533976  Dichelostemma multiflorum Mary Susan Taylor 1980-4-27 Taylor 2570 Butte T22N R2E so sec 25. N side of Humburg Rd., ca 1/4 mile upstream from Honey Run Covered Bridge, ca 7 miles e of Chico. Foothill Woodland; 400 ft. With Tritelia laxa, Daucus pusillus, Allium. Comment
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  CAS-BOT-BC502517  Dichelostemma volubile A. A. Heller; H. E. Brown 1902-5-8 5499 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC29768  Dichondra donelliana M. S. Taylor 1980-5-24 2739 Butte Near Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33903  Digitalis purpurea M. S. Taylor 1981-5-15 3742 Butte Both sides of rd 22N92 between its jct with 23N00.1 and West Branch French Creek, ca 1.5 air mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 883 Comment
  CDA42939  Digitaria ischaemum L. Ahart 2012-10-2 18494 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET13693578  Diplacus aurantiacus W. Short 1959-4-11 15 Butte On US Hwy 40, 15 miles E of Oroville. Comment
  CHSC3801  Diplacus grandiflorus R. L. Adams 1964-4-2 68 Butte Found: S. side of road, 1/4 mi. from 14 Mi. House on Hwy. 32, approx. 25 yrds. in canyon. About 12 mi. from Chico. Comment
  CHSC45720  Diplacus grandiflorus J. Marr 1988-4-8 13 Butte On e side of Hwy 70, 16 mi n of Oroville. 304 Comment
  CHSC1763  Diplacus kelloggii R. Carter 1965-3-13 154 Butte Found on North Table Mt. Ca. 10 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CHSC1774  Diplacus kelloggii H. Summers 1929-4-21 Butte Butte Creek. Comment
  CHSC44810  Diplacus kelloggii R. Banchero 1980-4-13 113 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC677  Distylium V. Holt 1961-3-10 Butte Growing on Bidwell grounds between a Crepe Myrtle and a palm near sidewalk to Arcadian Street. 57 Comment
  RSA726562  Dittrichia graveolens L. Ahart 2007-10-30 14506 Butte About 2.5 miles (air) northeast of Palermo, about 4.25 miles (air) southeast of Oroville. 130 Comment
  CHSC1394  Dodecatheon clevelandii subsp. patulum V. Holt 1935-3-30 Butte Chico Creek Ridge. 243 Comment
  CHSC24851  Dodecatheon clevelandii subsp. patulum A. D. Launer 1976-3-14 2 Butte Small population 100 yds n of Humboldt Rd, ca. 4 mi e of Chico. 97 Comment
  RSA715724  Dodecatheon clevelandii subsp. patulum L. P. Janeway 2005-3-1 8338 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  CHSC46085  Dodecatheon hendersonii Lowell Ahart 1989-3-25 6197 Butte Along an old road to Lake Oroville, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CDA6255  Dopatrium junceum T. C. Fuller 1976-8-1 20163 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  SEINET7073007  Downingia bacigalupii 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
  RSA40449  Downingia bicornuta A. A. Heller 1940-5-13 15617 -A Butte 3 miles W of Chico on State Hwy 32. Comment
  SD116534  Downingia cuspidata Barbara Ertter, Jeffrey Strachan and Lowell Ahart 1980-5-7 3311 Butte North Table Mountain, ca. 5.0 miles north of Oroville. 395 Comment
  UC1562499  Downingia ornatissima Barbara Ertter with Lowell Ahart 1986-4-13 5893 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  JEPS16284  Downingia ornatissima var. ornatissima A. A. Heller 1914-4-17 11305 Butte 8 mi n Oroville Comment
  JEPS119838  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC113503  Draperia systyla Lowell Ahart 2014-7-16 19671 Butte About 50 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  POM34663  Drymocallis glandulosa var. glandulosa C. C. Bruce 1898-05 2436 Butte Butte Creek. Comment
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  SEINET10530138  Dryopteris arguta Mary Susan Taylor 1981-5-7 Taylor 3638 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC90565  Dudleya cymosa Diane Mastalir 1988-4-16 7 Butte Bidwell Park, Chico, 3.0 mi ne from Wildwood Ave. on Upper Park Rd., .5 mi nw. 121 Comment
  CHSC42960  Dysphania ambrosioides Lowell Ahart 1987-7-3 5755 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC116141  Dysphania botrys Lowell Ahart 2015-10-26 20594 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  CHSC31543  Dysphania pumilio L. Ahart 1976-11-30 1224 Butte Peter Ahart Ranch, Honcut. 45 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
  CAS-BOT-BC197105  Echinochloa crus-galli Lowell Ahart 1981-9-19 3180 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC10679  Echinochloa crus-galli Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38814  Echinochloa crus-galli Vernon Oswald 1983-6-24 761 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  JEPS96001  Echinochloa crus-galli Vernon H. Oswald and Lowell Ahart 1996-5-27 7664 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the s side of Tract 1.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  SEINET10509315  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 A Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET9611362 Image available Echinochloa crus-galli N. E. Brown 1896-10-2 Butte near Oroville 53 Comment
  RSA707816  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 miles N.W. of Biggs, Biggs Rice Experiment Station Comment
  UCD41383  Echinochloa oryzicola E. Dean; with J. Ditomaso and 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. 30 Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  CDA38810  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC36968  Eclipta prostrata M. S. Taylor; L. Ahart 1982-10-11 5147 Butte Graylodge Wildlife Refuge, near checking station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  UCD131240  Eclipta prostrata L. Ahart 1999-9-21 8268 Butte along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC113231  Elatine Lowell Ahart 2014-4-30 19419 Butte About 100 yards north of Dunstone Drive, about 3 1/8 miles (air) northeast of Honcut. 60 Comment
  CHSC115209  Elatine Lowell Ahart 2015-5-5 20141 Butte North side of large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about one mile south west of the Oroville Airport, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC115334  Elatine Lowell Ahart 2015-4-24 20070 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC82217  Elatine chilensis Lowell Ahart 2002-4-22 9524 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC45275  Elatine heterandra Vernon Oswald 1988-4-26 3282 Butte Gray Lodge Waterfowl Management Area, on the n side of Rutherford Rd., 0.5 mi w of Pennington Rd. 21 Comment
  CAS-BOT-BC113637  Eleocharis acicularis Herbert L. Mason; Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge. Comment
  SEINET10905702  Eleocharis acicularis Lowell Ahart 1984-5-7 Ahart 4591 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  SEINET13710245  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8690 Butte Pond on E Side Sacramento River, NE of Parrott Landing, 12 Mi SW Chico Comment
  CDA14063  Eleocharis bolanderi G. F. Hrusa, T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  JEPS87198  Eleocharis engelmannii Lowell Ahart 1992-5-23 6774 Butte on n. side of Biggs Princeton Rd. ca. 2 mi. w. Biggs 30 Comment
  UC1100600  Eleocharis engelmannii Malcolm A. Nobs, S. Galen Smith 1949-7-29 1084 Butte 5 mi W of Richvale (rice field) Comment
  CAS-BOT-BC112793  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte In and beside the Lili Pond, a permanent pool, warm in summer. Jonesville. 1750 Comment
  CHSC56613  Eleocharis macrostachya L. P. Janeway 1988-6-26 2886 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi northeast of the high-voltage power-lines. 60 Comment
  CHSC68431  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1917 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  SEINET9764313 Image available Eleocharis macrostachya Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC112340  Eleocharis montevidensis Lowell Ahart 2013-7-9 18837 Butte East side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 13 miles (air) southeast of Oroville. 44 Comment
  JEPS95984  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 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
  CHSC78399  Eleocharis pachycarpa Lowell Ahart 2000-7-18 8597 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC78204  Eleocharis quinqueflora Lowell Ahart 2000-5-27 8405 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CDA38988  Eleocharis quinqueflora L. Ahart 2000-5-1 8333 Butte On the north margin of a large wash, just west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC64240  Eleocharis suksdorfiana S. C. Morey 1983-8-1 647 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC227297  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  POM183186  Elymus elymoides H. F. Copeland 1930-7-21 1350 Butte Jonesville. 1524 Comment
  UCD61425  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  CHSC9346  Elymus glaucus V. Hagaman 1968-5-3 582 Butte North end of Magalia, by railroad bridge. Comment
  UCD61904  Elymus glaucus A. A. Beetle 1941-6-27 2742 Butte 20 miles northeast of Chico. Comment
  CAS-BOT-BC203428  Elymus glaucus subsp. glaucus John Thomas Howell 1961-9-22 36736 Butte Bank of Feather River, Oroville 53 Comment
  CHSC44919  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC76156  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. 1400 Comment
  CHSC61535  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1993-6-26 7025 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC68915  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1997-7-11 7744 Butte Road cut, on the north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  UCD62600  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  JEPS110200  Elymus trachycaulus subsp. subsecundus Lowell Ahart 2006-7-16 12999 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  CHSC12627  Enemion occidentale M. S. Taylor 1974-3-16 81 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Comment
  CHSC64201  Epilobium brachycarpum S. C. Morey 1983-7-23 589 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UCD105944  Epilobium campestre M. S. Taylor 1980-7-6 3054 Butte Ca. 1 mile E of Meridian Road, ca. 1.25 miles NE of its junction with Highway 99, ca. 8 miles N of Chico. 67 Comment
  CHSC69047  Epilobium canum subsp. latifolium Lowell Ahart 1997-8-1 7775 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC11781  Epilobium ciliatum subsp. ciliatum E. B. Copeland 1929-7-25 388 Butte Jonesville. 1500 Comment
  POM173678  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1923-6-4 920 Butte Nelson. Comment
  SBBG127998  Epilobium ciliatum subsp. ciliatum L. Ahart 2009-7-9 16003 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  CHSC38561  Epilobium cleistogamum Vernon Oswald 1983-6-3 631 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the diversion channel. 79 Comment
  CHSC30900  Epilobium densiflorum M. S. Taylor 1980-8-30 3320 Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 mi e of Oregon City, ca. 5.5 mi n of Oroville. 365 Comment
  RSA700273  Epilobium densiflorum L. Ahart 2004-7-20 11287 Butte North side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 30 Comment
  UCD169652  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte About 1/8 mile northwest of the West Branch Bridge across Lake Oroville, about 40 yards east of the intersection of Truex Road and Trevor Road, south edge of Truex Road. 306 Comment
  CHSC46573  Epilobium glaberrimum subsp. glaberrimum Vernon Oswald 1983-7-19 873 Butte Doon Campground, ca. 1 mi e of Lovelock on the Skyway n-e of Paradise. Along the railroad. 822 Comment
  UC1594693  Epilobium hallianum Lowell Ahart 1992-7-21 6803 Butte on sides of a snow lake on s side of Hollow Coon Hollow (about 2 air mi ne of Philbrook Reservoir) 1737 Comment
  CHSC48633  Epilobium minutum Vernon Oswald 1987-4-20 2333 Butte Butte Creek Preserve on the s side of the creek ne of the Skyway. 85 Comment
  JEPS123820  Epilobium minutum Lowell Ahart 2015-4-18 20052 Butte About 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  CHSC103720  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC103744  Epilobium torreyi Lowell Ahart 2010-5-22 16710 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  SEINET7073008 Image available Epilobium torreyi 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
  CHSC2345  Epipactis gigantea V. Holt 1935-5-22 Butte Mud Creek above Richardson Springs. 182 Comment
  CHSC28508  Equisetum arvense M. S. Taylor; J. D. Jokerst 1979-10-13 2251 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps), ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC11938  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  JEPS117724  Equisetum hyemale subsp. affine Lowell Ahart 2010-9-13 17151 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 31 Comment
  JEPS124341  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC101148  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 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 Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC39630  Equisetum laevigatum Lowell Ahart 1983-4-22 3937 Butte Peter Ahart Ranch, Honcut. On the banks of North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  RSA285081  Equisetum laevigatum J. T. Howell 1975-6-15 51072 Butte Skyway between Chico and Paradise at Butte Creek. 61 Comment
  RSA718080  Equisetum laevigatum L. Ahart 2006-7-16 12984 Butte About 3/4 (air) mile northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows., 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. 1570 Comment
  CAS-BOT-BC57253  Equisetum laevigatum Lowell Ahart 1981-4-9 2752 Butte Peter Ahart Ranch, Honcut, edge of North Honcut Creek 50 Comment
  CHSC20222  Equisetum telmateia subsp. braunii Theresa Salinas 1972-8-3 7 Butte Doones Camp near Stirling City. 1219 Comment
  SEINET4568215  Eragrostis chloromelas R. McKee 1910-9-7 15370 Butte Chico Comment
  CHSC38819  Eragrostis cilianensis Vernon Oswald 1983-6-29 792 Butte Upper Bidwell Park, Chico, ca. 300 ft w of Day Camp. In the bed of an oxbow of Chico Creek. 91 Comment
  CHSC49238  Eragrostis cilianensis Vernon Oswald 1987-6-12 2989 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). Along the river. 33 Comment
  CHSC51035  Eragrostis hypnoides Lowell Ahart 1990-7-15 6557 Butte Along a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC213615  Eragrostis mexicana subsp. virescens John Thomas Howell 1961-9-22 36787 Butte North Fork of Feather River NE of Pulga, Sierra Nevada Comment
  CAS-BOT-BC284085  Eragrostis pectinacea var. pectinacea John Thomas Howell 1959-9-20 34687 Butte Eastern outskirts of Oroville, Sierra Nevada 60 Comment
  SEINET10791410  Eragrostis pilosa B. Crampton 1963-9-9 Crampton 6884 Butte Honcut. Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  RSA755367  Eragrostis pilosa var. pilosa L. Ahart 2009-10-7 16408 Butte Just under water when the Thermalito Afterbay is full, Larkin Road access to the Thermalito Afterbay, about 5 air miles southwest of Oroville. 41 Comment
  UC203852  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte near the base Table Mountain (8 mi n of Oroville) Comment
  CAS-BOT-BC174105  Eremogone aculeata Anna Head 1921-7-20 s.n. Butte Trail above Round Lake, Feather River region Comment
  CHSC90972  Eremogone cliftonii L. P. Janeway; C. Christofferson, S. Mackey Hillaire, M. Brown 2005-5-11 8388 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope overlooking Lockerman Creek, 0.7 km east of Lockerman Creek and 1.2 km east-northeast of its confluence at Camp Creek. 1234 Comment
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Jul 8 2014
  RSA712969  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi. north of Rag Dump; between Granite Ridge and Granite Spring. 1371 Comment
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Mar 16 2012
  CHSC61630  Ericameria bloomeri Lowell Ahart 1993-9-8 7172 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  UC87299  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  CHSC58251  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte Along the dirt road, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 1/2 miles west of Oroville Dam. 76 Comment
  CAS-BOT-BC300618  Erigeron foliosus var. hartwegii Lowell Ahart 1980-5-12 2252 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC31590  Erigeron foliosus var. hartwegii L. Ahart 1978-5-16 1731 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48150  Erigeron lassenianus var. lassenianus Vernon Oswald 1984-7-2 1340 Butte Humbug Rd. 0.3 mi s-w of Humbug Summit. 2023 Comment
  CHSC102986  Erigeron philadelphicus Lowell Ahart 2009-6-3 15824 Butte 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 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CHSC38345  Erigeron philadelphicus Vernon Oswald 1983-5-1 404 Butte Upper Bidwell Park, Chico, where Yahi Trail borders Chico Creek ca. 800 ft w of the e end of Upper Park Rd. 198 Comment
  CHSC116974  Eriodictyon californicum Danielle Gee 2013-4-27 Butte Yankee Hill Rd., 30 yards off Hwy. 70, along road cut. 579 Comment
  CHSC42356  Eriodictyon californicum Lowell Ahart 1987-5-11 5612 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  RSA31114  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville. Butte Creek. 76 Comment
  CHSC61643  Eriogonum lobbii Lowell Ahart 1993-9-8 7166 Butte Open bare areas, on the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CAS-BOT-BC259396  Eriogonum luteolum Richard R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC259399  Eriogonum luteolum A. A. Heller 1916-9-5 12646 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC261714  Eriogonum nudum var. oblongifolium Lowell Ahart 1989-7-4 6365 Butte South of Oregon Gulch Road, about 1/4 mile north-west of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  CAS-BOT-BC269851  Eriogonum nudum var. pubiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC269852  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte Hills 8 miles north of Oroville Comment
  CHSC34722  Eriogonum nudum var. pubiflorum M. S. Taylor 1981-7-10 4058 Butte N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  CHSC45487  Eriogonum roseum Lowell Ahart 1975-9-4 982 Butte Along the edges of Ponderosa Way, about 2 miles south-west of Feather Falls, about 1 1/2 miles north-west of the Ponderosa Dam. 396 Comment
  CHSC34044  Eriogonum umbellatum var. ahartii L. Ahart 1981-7-7 2929 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  CHSC46787  Eriogonum umbellatum var. ahartii R. A. Schlising 1980-7-7 3857 Butte E part of county, NE of village of Feather Falls at Lumpkin Ridge. 1280 Comment
  RSA0049736  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2013-7-31 21389 Butte Jordon Hill Road, ca. 1 air mile directly east and across the West Branch Feather River canyon from Magalia 701 Comment
  SEINET10871615  Eriogonum ursinum Mary Susan Taylor 1978-7-18 Taylor 1698 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC31069  Eriogonum vimineum M. Hayes; J. Warner 1977-9-11 59 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of Hwy 99 and Hwy 32 overpass in Chico. 914 Comment
  SEINET10937587  Eriogonum vimineum Mary Susan Taylor 1975-9-19 Taylor 921 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CAS-BOT-BC308151  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte Near Cohasset Comment
  CAS-BOT-BC308171  Eriophyllum lanatum var. grandiflorum A. A. Heller 1913-5-28 10763 Butte 8 miles north of Oroville, Table Mountain 182 Comment
  CAS-BOT-BC308172  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte Cohasset, Sierra foothills Comment
  JEPS32712  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1963-6-2 63066 Butte 2 mi s Pulga; North Fork of Feather River 579 Comment
  POM66852  Eriophyllum lanatum var. grandiflorum C. C. Bruce 1897-06 1989 Butte Little Chico Comment
  UC175162  Eriophyllum lanatum var. grandiflorum A. A. Heller 1913-5-28 10763 Butte 8 mi n Oroville (ditch along Table Mountain); Table Mountain 182 Comment
  RSA92670  Eriophyllum lanatum var. grandiflorum F. W. Peirson 1926-6-21 6766 Butte About 10 miles east of Chico on Humboldt Road Comment
  SEINET10904847  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 Ahart 4997 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  UCD103055  Erodium botrys A. A. Heller 1915-3-24 11777 Butte Near Dry Creek, 5 miles south of Pentz. Comment
  SEINET10837354  Erodium obtusiplicatum Mary Susan Taylor 1974-3-26 Taylor 91 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  CAS-BOT-BC40747  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte Near Cohasset. Comment
  CHSC25361  Erysimum capitatum var. capitatum Marc P. Hayes 1977-4-22 5 Butte Ca. .8 km sw of Pulga, 110 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from juncture with Hwy 70. 490 Comment
  CHSC4257  Erysimum capitatum var. capitatum J. E. Bowlin 1967-3-24 36 Butte Along roadside, Hwy 70 at Cresta Powerhouse. Comment
  CHSC38696  Erythranthe bicolor Vernon Oswald 1983-5-8 447 Butte Upper Bidwell Park, Chico, on the w bank of the Diversion Channel between Lindo Channel and Wildwood Ave. 83 Comment
  CHSC8620  Erythranthe bicolor L. V. Ritter 1969-5-20 320 Butte 1 mi. w of Butte Meadows e side of Butte Meadows Rd. Comment
  CHSC28550  Erythranthe breweri M. S. Taylor 1978-7-19 1175 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC42864  Erythranthe breweri Lowell Ahart 1987-5-12 5633 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC102395  Erythranthe cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 266 Comment
  CHSC51924  Erythranthe glaucescens S. B. Collom 1988-4-25 11 Butte Chico: 100 yds E from 5th Ave bridge in Lindo Channel, on N side. Comment
  SEINET8360340  Erythranthe glaucescens Sam M. Grossberg 1978-4-21 15 Butte ca. 100 yds wnw of Highway 32, 9.2 mi ne of Chico. 381 Comment
  CHSC116308  Erythranthe guttata Lowell Ahart 2015-11-18 20662 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC65903  Erythranthe guttata Vernon H. Oswald 1996-4-20 7399 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  CHSC110629  Erythranthe microphylla Christopher T. Ivey; Jenn Coughlan 2013-5-17 382 Butte Centerville Rd. about 1 km N of Honey Run bridge. 115 Comment
  CHSC44676  Erythranthe nasuta R. Banchero 1980-4-19 119 Butte Ca 0.7 mi directly NE of Feather Falls, ca 1.4 mi due N of the town of Feather Falls. 944 Comment
  CHSC113473  Erythranthe primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC23444  Erythranthe primuloides K. R. Stern 1974-6-30 5778 Butte Bank of Jones Creek, at Jonesville. Comment
  CHSC43762  Erythranthe pulsiferae Vernon oswald; Lowell Ahart 1987-6-10 2979 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  SEINET10469659  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3512 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  SEINET10469663  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3518 Butte T23N R4E sw sec 36, Pulga SW quad. Open rocky serpentine ridge, n side of Concow Rd, ca. 3/4 mi s of its jct with Ponderosa Way/Rim Rd, ca. 6 air mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 2800 ft. 853 Comment
  CHSC38878  Erythronium multiscapideum Vernon Oswald 1983-3-13 158 Butte Upper Bidwell Park, Chico, 100 ft. s of Upper Park Rd. at the w entrance to Brown's Hole (2.6 mi e of the power lines). 231 Comment
  CHSC79870  Erythronium multiscapideum Leanna Brown 1999-4-27 71 Butte Eastern shore of Paradise Lake. 753 Comment
  UC1377683  Erythronium multiscapideum John Ingram and Arlynn Ingram 1960-4-5 281 Butte just n Southern Pacific Station; Magalia 701 Comment
  UC1485465  Erythronium multiscapideum M. S. Taylor 1981-4-8 3504 Butte serpentine ridge on n side logging landing site (just w of power lines off logging rd ca 1/2 mi w of its jct with Ponderosa Way (rd to Flea Valley), ca 5 mi n of its jct with Hwy 70); Pulga SW Quad 883 Comment
  CAS-BOT-BC504528  Erythronium multiscapideum Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CHSC52096  Eschscholzia caespitosa Andrew D. Lane 1984-4-22 9 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  CHSC92559  Eschscholzia lobbii L. P. Janeway 2005-3-1 8331 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS115504  Eucalyptus camaldulensis Lowell Ahart 2009-6-12 15843 Butte On the east side of the deep pen, about 50 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  UC600728  Eucephalus breweri H. F. Copeland 1932-7-24 Butte sw Butte Creek Meadows; Jonesville Comment
  CAS-BOT-BC206917  Euonymus occidentalis V. Oswald; L. Ahart 1988-6-17 3399 Butte West side of Pinkard Creek ca. 1 mi. N of Lost Creek Reservoir. 1028 Comment
  SD48502  Euphorbia crenulata E. K. Balls 1957-5-22 22505 Butte Feather River Highway, U. S. 40 alt., 18 miles northeast from Oroville. 700 Comment
  SEINET10906849  Euphorbia maculata Lowell Ahart 1984-8-19 Ahart 4786 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC96222  Euphorbia peplus R. Fischer 2006-5-20 977 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  SEINET10453782  Euphorbia serpillifolia Lowell Ahart 1990-10-21 Ahart 6637 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. Foothill Woodland (destroyed). T21N R4E NWS5. 213 Comment
  CHSC96242  Euphorbia spathulata R. Fischer 2006-4-21 985 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on a grassy hillside east of Big Chico Creek at the bottom of 10 Mile House Road, ca. 250 ft. s of gated park property line. 228 Comment
  CHSC43242  Euthamia occidentalis Lowell Ahart 1987-9-29 5906 Butte On a road cut near a wash, near the dirt road, about 1 mile east of the Golden Trout Crossing across the South Fork of the Feather River, about 2 miles west of the Sly Creek Reservoir. 1158 Comment
  SEINET10508573  Festuca californica Lowell Ahart 1985-5-15 Ahart 4998 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC50389  Festuca elmeri Vernon Oswald 1990-6-1 4273 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. On slopes along trail. 579 Comment
  CHSC39259  Festuca occidentalis Lowell Ahart 1983-6-26 4165 Butte Along the edges of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 20 miles north-east of Oroville. 1000 Comment
  SEINET231715 Image available Festuca occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4704 Butte Ca 2 mi SW of Forbestown Diversion Dam NE of Forbestown Yellow Pine Forest 700 Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  CHSC39314  Festuca subulata Lowell Ahart 1983-6-26 4107 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  UC600748  Festuca subulata H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CHSC99566  Festuca subuliflora L. P. Janeway 2008-6-22 9432 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  UC1609158  Festuca subuliflora Vernon H. Oswald and Lowell Ahart 1993-6-22 5563 Butte 0.25 mi s Diversion Dam (w of Stirling City, Long Ravine, along Hendricks Canal); Hendricks Canal, Long Ravine 950 Comment
  CAS-BOT-BC77689  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  HSC18389  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 68113 Butte Feather River Canyon, Pulga 488 Comment
  CHSC1531  Frangula rubra subsp. obtusissima A. Koopman 1929-5-15 Butte Cohasset canyon. Comment
  CAS-BOT-BC55727  Frangula rubra subsp. rubra Sally Bianco 1995-9-7 1025 Butte Concow area, between Jarbo Gap & Concow, along Deadwood Rd. 579 Comment
  JEPS120081  Fraxinus Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18111 Butte Along the paved park road, near Table 31, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 Comment
  LA50899  Fraxinus dipetala A. A. Heller; 1915-4-12 11815 Butte hills 14 mi NE of Chico near Rock creek Comment
  SEINET10935662  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca 50 feet E of Cohasset Hwy, ca 8 miles N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 135 Comment
  CHSC41917  Fremontodendron californicum Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC19921  Fritillaria affinis M. S. Taylor 1975-3-3 403 Butte Ca. 1/4 mi n of Richardson Springs Camp, ca. 8 mi n of Chico. 91 Comment
  CHSC56821  Fritillaria atropurpurea J. Monelo; B. Castro 1990-4-16 3 Butte Butte Meadows-Humboldt Rd ca 1.9 mi n Hwy 32 n facing rock outcropping ca 100 ft nw of Humboldt Rd. 1310 Comment
  CAS-BOT-BC130314  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Forbestown Site, on road from Forbestown to Woodleaf Comment
  SEINET10469656  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3552 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  SEINET3992162  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  CHSC2287  Fritillaria recurva R. M. Staley 1952-7-17 Butte Butte Creek. 365 Comment
  CHSC1613  Galium aparine E. Crouch 1929-4-18 Butte Bidwell Park. 76 Comment
  CHSC78268  Galium aparine Lowell Ahart 2000-6-29 8534 Butte In Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  RSA754579  Galium aparine L. Ahart 2009-4-17 15548 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
  SEINET10500623  Galium aparine Mary Susan Taylor 1975-3-25 Taylor 427 Butte Chico. Comment
  UC1586559  Galium aparine Lowell Ahart 1991-4-19 6646 Butte steep slope on w side North Honcut Creek (about 1 1/2 mi n and 2 3/4 mi e of Honcut, about 12 mi se of Oroville); Peter Ahart Ranch 45 Comment
  CHSC28018  Galium bifolium M. S. Taylor 1978-7-18 1714 Butte On E side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC96967  Galium bolanderi Lowell Ahart; Lawrence Janeway 2007-7-10 14284 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  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
  HSC66332  Galium grayanum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3202 Butte Humboldt Peak, on W side and top of peak 2155 Comment
  CHSC27950  Galium porrigens var. tenue M. S. Taylor 1979-3-20 1940 Butte Ca. 1 mi N of jct of north fork Feather River, along an old road, ca. 10 mi N of Oroville. 304 Comment
  CHSC30301  Galium porrigens var. tenue M. S. Taylor 1980-5-27 2725 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  CHSC46220  Galium sparsiflorum subsp. glabrius Pauleen Broyles 1987-7-5 1026 Butte Along Butte Creek Trail, ca 0.1 km S of the crossing of Garland Road. Comment
  CHSC113472  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS122076  Galium trifidum subsp. columbianum Lowell Ahart 2014-7-13 19659 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SD4933  Galium trifidum subsp. columbianum E. B. Copeland 1930-7-6 475 Butte Jonesville, north slope, under melting snowbank 2000 Comment
  CHSC11819  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 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
  UC426967  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville 1500 Comment
  CHSC116748  Gamochaeta ustulata Lowell Ahart 2016-5-24 20853 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
  CAS-BOT-BC282599  Gastridium phleoides Lowell Ahart 1977-5-21 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC102162  Gastridium phleoides Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC109651  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the sides of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-3/8 miles (air) northeast of Chico. 220 Comment
  CHSC93870  Gastridium phleoides Lowell Ahart 2006-6-9 12652 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  UCD169894  Gastridium phleoides Lowell Ahart 2008-5-21 14780 Butte On the north side of the South Fork of Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River. About 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  UCD66563  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 miles north of Lone Pine Forest Guard Station, rte. 32. Comment
  UCD66574  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville. Comment
  UC579315  Gastridium ventricosum P. L. Johannsen 1935-5-27 677 Butte four mi se Chico; Chico Quad. 83 Comment
  UC1594730  Gayophytum heterozygum Lowell Ahart 1992-7-26 6851 Butte about 1/2 mi n Carr Mine (about 2 air mi s of Snow Mt., e of a small stream) 1767 Comment
  SEINET10453074  Gayophytum heterozygum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4224 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  UCD103535  Gayophytum heterozygum R. Banchero; R. A. Schlising 1980-7-7 3849 Butte NE of Village of Feather Falls, 0.7 mi N of Fall River Campground and bridge. Comment
  CHSC60998  Gayophytum humile Lowell Ahart 1993-6-26 7033 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC600544  Gayophytum humile H. F. Copeland 1932-7-24 Butte Butte Creek Canyon Jonesville (w wall, near headwaters) Comment
  UC463036  Gentiana newberryi E. B. Copeland 1931-7-21 Butte Jonesville 1500 Comment
  CHSC115899  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2015-8-12 4478 Butte Butte Creek House Meadow Ecological Reserve, along Humbug Road. 1767 Comment
  CHSC113502  Gentianopsis simplex Lowell Ahart 2014-7-16 19688 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC51884  Gentianopsis simplex L. P. Janeway 1988-7-29 3120 Butte Mdw near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC94438  Gentianopsis simplex L. P. Janeway 2006-8-12 8846 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  CHSC113197  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards west of the old road, west of the first area to park, about 3 1/2 miles (air) northeast of Oroville Dam. 252 Comment
  HSC96899  Geranium dissectum L. Ahart 2005-4-14 11704 Butte Gridley, N of Spruce St., S of railroad bridge, E side of RR tracks 28 Comment
  CDA4657  Geranium dissectum T. C. Fuller 1962-5-17 8704 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC99003  Geranium purpureum Lowell Ahart; Lawrence Janeway, Linnea Hanson 2008-5-27 14790 Butte Dry bare red soil, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Pondersoa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  SEINET10969154  Gilia capitata subsp. pedemontana Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4748 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  HSC32409  Gilia tricolor Dave Knorr 1974-4-20 134 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  UC172852  Gilia tricolor subsp. tricolor A. A. Heller 1913-4-7 10724 Butte hills six mi n Oroville; n of Oroville Comment
  UC880189  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CAS-BOT-BC266584  Githopsis pulchella A. A. Heller 1937-5-31 15340 Butte Near the junction of Highway 24 and the Yankee Hill road, about 21 miles from Oroville Comment
  SEINET10460582  Githopsis pulchella subsp. campestris A. Arthur Heller 1914-5-22 Heller 11423 Butte On gravely north slope near Richardson Springs Comment
  CHSC20523  Githopsis specularioides M. S. Taylor 1975-4-29 536 Butte Scattered on s side of Pentz Rd, ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. Comment
  CHSC93457  Githopsis specularioides Lowell Ahart 2006-5-8 12600 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  CHSC51270  Glinus lotoides Lowell Ahart 1990-10-5 6631 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC51368  Glinus lotoides Vernon Oswald; Lowell Ahart 1990-10-11 4460 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. Occasional plants on drying mud on the bed of Dark Canyon Creek, below the high-water line of the lake. 243 Comment
  CDA2162  Glyceria declinata L. Ahart 2000-5-21 8377 Butte On the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. Comment
  CAS-BOT-BC280564  Glyceria elata Lowell Ahart 1981-9-15 3174 Butte Along French Creek 1300 Comment
  CHSC64257  Glyceria elata S. C. Morey 1983-7-23 582 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC46289  Glycyrrhiza lepidota Vernon Oswald 1989-5-23 3783 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Growing on the dike along Butte Creek n of thew Gridley-Colusa Hwy. 18 Comment
  CHSC66076  Glycyrrhiza lepidota Vernon H. Oswald 1996-5-22 7624 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along the slough and on the E side of Little Grant near the Riparian Sanctuary. 28 Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 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
  POM39096  Gnaphalium chilense C. C. Bruce 1897-05 2108 Butte Little Chico. Comment
  POM358819  Gnaphalium chilense H. F. Copeland 1923-6-4 520 Butte Nelson. Comment
  SEINET10475071  Gnaphalium luteoalbum Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3425 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CHSC116747  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC41871  Gnaphalium palustre Lowell Ahart 1986-11-9 5450 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  SEINET10948371  Gnaphalium palustre Lowell Ahart 1986-11-9 Ahart 5450 Butte On damp red gravelly soil, on the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 37 Comment
  CDA13240  Goodyera oblongifolia G. F. Hrusa, T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC108148  Goodyera oblongifolia Lowell Ahart 2011-8-23 17654 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 100 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  SEINET10547783  Gratiola ebracteata Mary Susan Taylor 1978-5-7 Taylor 1599 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10832440  Gratiola ebracteata Mary Susan Taylor 1980-3-28 Taylor 2399 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CAS-BOT-BC305287  Grindelia hirsutula John Thomas Howell 1962-6-15 37481 Butte Magalia 731 Comment
  CHSC35081  Hackelia californica R. A. Schlising; R. Banchero 1980-7-14 3894 Butte 4.2 mi N of Inskip along Skyway (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). 1511 Comment
  CHSC97790  Hamamelis vernalis L. P. Janeway 2007-8-12 9155 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC5942  Hedera helix M. MacArthur 1968-6-17 176 Butte SW edge of Big Chico Creek, NE of Dining Hall, Chico State College campus. 60 Comment
  SEINET11842149  Hedypnois cretica R. A. Schlising 1980-1 3595 Butte N of Lake Oroville, along Nelson Bar Rd, 1 mi W of jct with Lunt Rd & 1.8 mi total W of jct Comment
  CHSC45679  Helenium bigelovii Vernon Oswald 1983-7-6 819 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  CHSC93979  Helenium bigelovii R. D. Fischer 2004-6-20 770 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected north of pond along the eastern meadow edge. 1371 Comment
  CHSC42463  Helianthella californica var. nevadensis Lowell Ahart 1987-5-22 5669 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC75904  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte Sierra Nevada. Slopes above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 730 Comment
  UC179529  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte 6 mi from Chico Chico (on the Chico Hamilton road, in low fields) Comment
  CHSC33215  Heliotropium curassavicum R. E. Preston 1981-6-19 98 Butte Gray Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. At side of road near edge of water, on levee, ca. 100 m w of Headquarters. 20 Comment
  SD175807  Heliotropium europaeum D. G. Kelch 2006-8-2 06 340 Butte Along butte Cree, north of Durham-Dayton Highway. 46 Comment
  CHSC28784  Hemizonia congesta subsp. luzulifolia J. D. Jokerst 1979-9-8 337 Butte Adjacent to fresh-water marsh. East of Chico-Butte City Hwy., 0.5 mi. N. of intersection with Nelson West Rd. Comment
  CHSC45682  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1987-8-13 3219 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. By large vernal pool in field. 48 Comment
  RSA95063  Hemizonia fitchii F. W. Peirson 1923-7-21 3901 Butte North of Chico. Comment
  CHSC11878  Heracleum lanatum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  JEPS107435 Image available Hesperevax acaulis var. ambusticola Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11676 Butte Big Chico Creek Ecological Reserve. Ridge top, in the center of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 484 Comment
  CHSC101680  Hesperocnide tenella Lowell Ahart; Josephine Guardino 2009-5-8 15652 Butte Protected area under cliffs, above a steep slope, about 40 feet south of the south side of the gravel road and Big Chico Creek, about 100 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC175976  Hesperolinon californicum Mrs. C. C. Bruce 1897-3-1 1775 Butte Little Chico 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
  SEINET10493821  Hesperolinon micranthum Mary Susan Taylor 1981-5-21 Taylor 3769 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  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
  UC1609051  Heterocodon rariflorum Lowell Ahart 1993-7-29 7123 Butte about 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  SEINET10460699  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte Jonesville 1550 Comment
  SEINET10460705  Heterocodon rariflorum Edwin B. Copel 1928-8-18 Copeland 945 Butte JONESVILLE, ALLUVIAL SANDS Comment
  SEINET10460720  Heterocodon rariflorum Taylor 1980-5-27 Taylor 2718 Butte North side of Bald Rock Road, about 1 miles east of Lake Madrone 671 Comment
  SEINET10460737  Heterocodon rariflorum Taylor 1980-5-27 Taylor 2684 Butte At the foot of Big Bald Rock, about 3 miles east of Lake Madrone. T21N R6E sc Sec. 30 998 Comment
  CHSC38362  Heterotheca grandiflora Vernon Oswald 1982-10-23 5 Butte Bidwell Park, Chico. On the s edge of the Diversion Channel near its junction with Lindo Channel at the location of the Old Horse Arena. 79 Comment
  CHSC70848  Heterotheca grandiflora Lowell Ahart 1998-4-8 7951 Butte 100 yards south of the Thermalito Diversion Dam, on the east side of the Feather River, City Park, Oroville. 57 Comment
  SFV1580  Heuchera micrantha M. L. Vincent 1962-4-18 209 Butte Near Feather River at Hells Town. Comment
  CDA7974  Hieracium scouleri T. C. Fuller 1958-7-7 1911 Butte 1 mile north of Pulga Station. 0 Comment
  CAS-BOT-BC55327  Hirschfeldia incana John Thomas Howell 1961-9-22 36712 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  CHSC38413  Hirschfeldia incana Vernon Oswald 1983-5-2 413 Butte Upper Bidwell Park, Chico, in a field on the s side of Lindo Channel just upstream from the flood-control gates. 79 Comment
  UC924222  Hoita macrostachya H. S. Reed 1939-7-10 295 Butte nw Chico; Sacramento River 57 Comment
  JEPS114985  Hoita orbicularis Lowell Ahart 2008-6-13 14828 Butte On wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville 305 Comment
  CAS-BOT-BC280710  Holcus lanatus M. S. Taylor 1978-6-24 1662 Butte Montane Meadow, on n side of Old Humboldt Rd across from Butte Meadows 1371 Comment
  CAS-BOT-BC280717  Holcus lanatus L. L. Heinrichs 1964-4-28 s.n. Butte C. L. Boynton prop., across Hwy 40 Alt. from Berkeley Olive Assoc., Oroville Comment
  RSA718739  Holcus lanatus L. Ahart 2006-7-25 13056 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC48847  Holodiscus microphyllus var. glabrescens Vernon Oswald 1987-7-13 3111 Butte Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. On the s side of the lake. 1901 Comment
  CAS-BOT-BC281254  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1983-6-26 4154 Butte Along Ponderosa Way, ca. 2.5 mi. E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 mi. NE of Oroville 600 Comment
  CHSC2151  Hordeum marinum subsp. gussoneanum H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E. of Chico. 121 Comment
  CAS-BOT-BC143977  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  UC176390  Horkelia tridentata subsp. tridentata A. A. Heller 1913-6-7 10793 Butte near Stirling 1036 Comment
  UC600377  Horkelia tridentata subsp. tridentata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC42485  Hydrophyllum occidentale Lowell Ahart 1987-5-12 5650 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC94026  Hydrophyllum occidentale R. D. Fischer 2005-4-9 730 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a shady and moist north facing slope with oak overstory. 487 Comment
  CHSC34160  Hypericum anagalloides L. Ahart 1981-8-31 3055 Butte In seep near the Black Bart Rd, ca. 1 mi w of the jct of Black Bart Rd and Oroville-Forbestown Rd, w of Forbestown. 750 Comment
  JEPS121905  Hypericum anagalloides Lowell Ahart 2014-7-16 19679 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS94061  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte ca. 7 (air) mi. n. Oroville (seep area w. of cattle chute on w. side of Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  CAS-BOT-BC401220  Hypericum perforatum Lowell Ahart 1987-7-17 5823 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC101693  Hypochaeris glabra Lowell Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC103956  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CHSC46979  Imperata brevifolia Vernon H. Oswald 1989-9-28 4020 Butte Richardson Springs in the foothills ne of Chico. North of the falls on the East Branch of Mud Creek. 243 Comment
  CHSC30291  Iris hartwegii subsp. hartwegii M. S. Taylor 1980-5-27 2646 Butte Around parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC109136  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 31/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 350 Comment
  CHSC21276  Iris macrosiphon M. S. Taylor 1975-4-13 379 Butte Ca. 75 ft s of the Skyway on Neal Rd, Paradise. 609 Comment
  CHSC23645  Iris macrosiphon M. S. Taylor 1976-4-4 1060 Butte S side of Ponderosa Way, ca. 3 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  CHSC3250  Iris macrosiphon Virginia Hagaman 1966-3-28 82 Butte Covered Bridge in ravine at bottom of canyon. Comment
  JEPS120115  Iris macrosiphon Lowell Ahart 2012-3-23 17795 Butte On the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UCD138813  Iris tenuissima T. M. Lane 1975-4-27 11 Butte Cohasset Hwy, 0.8 mile north of junction with Rock Creek Road. 9.5 miles north of Chico. Comment
  CAS-BOT-BC69951  Isoetes bolanderi Vernon Oswald; Lowell Ahart 1987-7-1 3064 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 1813 Comment
  CHSC39547  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC61878  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte near North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC82291  Isolepis cernua Lowell Ahart 2002-4-24 9534 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CAS-BOT-BC112447  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Peter Ahart Ranch, ca/ 1 1/2 mi N and 1 1/4 mi. E of Honcut. 39 Comment
  CHSC39527  Isolepis setacea Lowell Ahart 1983-6-12 4047 Butte In a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC78209  Isolepis setacea Lowell Ahart 2000-6-6 8454 Butte On the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mil south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 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
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC108964  Jasminum mesnyi Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17867 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 65 Comment
  CHSC109602  Juglans hindsii Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwwell Park, Chico. 76 Comment
  CAS-BOT-BC110011  Juncus Mrs. R. M. Austin 1883-1-1 s.n. Butte Unspecified. Comment
  CHSC49604  Juncus articulatus Vernon Oswald 1987-6-8 2959 Butte Butte Creek Reserve on the se side of the creek, ne of Hwy 99. 67 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
  CHSC4386  Juncus balticus M. Hillier 1966-5-30 Butte Near creek at s of Park Ave. Comment
  JEPS98493  Juncus brachyphyllus Lowell Ahart 2000-6-27 8512 Butte 12 air miles NE of Oroville (Big Bald Rock, 3 air miles E of Madrone Lake) 993 Comment
  CHSC31840  Juncus bufonius var. bufonius Lowell Ahart 1973-5-24 223 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6158  Juncus bufonius var. bufonius E. Parreno 1968-5-19 69 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. 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
  CHSC59018  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte In a very small meadow, on rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC1564728  Juncus bufonius var. occidentalis V. Oswald and L. Ahart 1989-7-21 3868 Butte ca 1 mi w Jonesville (junction of Willow and Colby Creeks, on the w side of Colby creek, on the n side of Humbold Rd) 1487 Comment
  CHSC116640  Juncus capitatus Lowell Ahart 2016-4-15 20749 Butte On the west side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC49609  Juncus drummondii Vernon Oswald; Lowell Ahart 1987-7-1 3084 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the s edge of the large lake. 1935 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC29248  Juncus effusus subsp. pacificus M. S. Taylor 1978-7-21 1811 Butte On s side of Oroville-Quincy Hwy along a creek in a meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC66456  Juncus effusus subsp. pacificus Vernon H. Oswald; Lowell Ahart 1996-6-10 7731 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary 28 Comment
  RSA730000  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14000 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
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Mar 20 2009
  UCD141503  Juncus effusus subsp. pacificus L. Ahart 2008-7-23 15152 Butte on the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  RSA718307  Juncus effusus var. exiguus L. P. Janeway 2006-8-6 8828 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CHSC33712  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1981-6-13 1335 Butte North of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  CHSC99488  Juncus ensifolius Lowell Ahart 2008-7-23 15142 Butte North side of the South Fork of the Feather River, 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
  SEINET11787692  Juncus ensifolius J. D. Jokerst, Schlising, R. A. 1982-1 1650 Butte W edge of Skyway 1.1 mi S of Innskip 1433 Comment
  CHSC51027  Juncus hemiendytus Lowell Ahart; Vern Oswald 1990-7-5 6550 a Butte In a small meadow, about 1/2 mile north of Butte Creek House, about 2 miles northeast of Snag Lake. 1828 Comment
  CHSC47554  Juncus howellii Lowell Ahart 1981-8-15 3047 Butte On the south side of the dirt road, about 1 mile east of Coon Hollow Road, southeast of Snag Lake, about 10 miles north of Inskip. 1524 Comment
  SEINET10472444  Juncus howellii Lowell Ahart 1983-8-16 Ahart 4314 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  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
  CHSC41441  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Along the sides and on the bottom of small vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC93376  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12541 Butte In a vernal pool, about 100 yards southeast of the fence and tower, pasture fields, about 7/8 mile north and 1 3/4 miles east of Honcut. 53 Comment
  CDA34709  Juncus leiospermus var. leiospermus L. Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Comment
  CHSC93493  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12604 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 339 Comment
  CHSC28655  Juncus mertensianus J. D. Jokerst 1979-9-23 357 Butte W. slope of Humboldt Peak, 1/4 mi. E. of Humboldt Summit (Humboldt Road). Northern most portion of Butte County. 2042 Comment
  CHSC46272  Juncus mexicanus Vernon Oswald 1989-5-1 3756 Butte Butte Sink Wildife Area (w portion of Schohr Ranch), sw corner of the intersection of the main ranch road and Little Dry Creek. 19 Comment
  CHSC99758  Juncus occidentalis Lowell Ahart 2008-6-13 14816 Butte East 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
  CHSC78339  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte North part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS116086  Juncus patens Lowell Ahart 2009-5-30 15779 Butte On dry soil, broad open drainage on oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  SEINET10472459  Juncus patens Mary Susan Taylor 1977-8-16 Taylor 1446 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CDA34545  Juncus tenuis L. Ahart 2007-7-7 14262 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. Comment
  CHSC105532  Juncus tenuis Lowell Ahart 2010-9-21 17225 Butte On damp bare disturbed soil, bottom and sides of a small wash, 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
  CHSC111086  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
  CHSC39682  Juncus tenuis Lowell Ahart 1983-6-21 4103 Butte Found along the edge of Bloomer Hill Road, about 3 miles northwest of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  CHSC41903  Juncus tenuis Lowell Ahart 1976-9-21 1198 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  CHSC49626  Juncus tenuis Vernon Oswald 1987-5-12 2390 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. Near a dredger pond. 80 Comment
  CHSC50384  Juncus tenuis Vernon Oswald; Lowell Ahart 1990-5-26 4257 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Bordering a dredge pond. 32 Comment
  UC1609503  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte ca. 6 (air) mi. n.e. Feather Falls (ca. 100 yds. w. of bridge across Fall River) 1036 Comment
  SEINET10472350  Juncus tenuis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4219 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC96543  Juncus triformis Lowell Ahart 2007-5-22 13902 Butte Northeast of Little Bald Rock, about 300 yards east of Bean Creek road, about 16 miles (air) northeast of Oroville. 1009 Comment
  JEPS113275  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  CHSC98997  Juncus trilocularis Lowell Ahart 2008-5-30 14792 A Butte Dry to damp bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CHSC99316  Juncus trilocularis Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  CHSC47575  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Around the edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC102731  Juncus usitatus Lowell Ahart 2009-7-4 15999 Butte On the side of a pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley. 21 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
  RSA726657  Juncus usitatus L. Ahart 2007-7-5 14250 Butte Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 23 Comment
  CAS-BOT-BC236761  Keckiella breviflora Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville 500 Comment
  CAS-BOT-BC236762  Keckiella breviflora Lowell Ahart 1976-6-4 s.n. Butte Peter Ahart Ranch, near North Honcut Creek 45 Comment
  SEINET10547830  Keckiella breviflora subsp. glabrisepala Mary Susan Taylor 1980-6-14 Taylor 2883 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  CHSC44721  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-5 196 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  UC1063301  Keckiella breviflora var. glabrisepala J. E. Sowder 1933-6-6 81 Butte 1 mi nw Nelson's Bar; Chico Quad. 457 Comment
  CHSC39977  Keckiella lemmonii L. Ahart; P. Ahart 1983-7-24 4209 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  SD4941  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville, partial shade 1550 Comment
  SEINET10968831  Kelloggia galioides Mary Susan Taylor 1977-8-17 Taylor 1484 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC33526  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  UC1562422  Kickxia elatine Lowell Ahart 1990-6-16 6513 Butte se side Forbestown Reservoir (near the Forbestown Generator, along se side of dirt road) 487 Comment
  CDA6293  Kickxia elatine T. C. Fuller 1965-9-15 14106 Butte Between Eddy Lake & Perkins Lake, Rancho Llano Seco, 3.5 miles south of Ord Ferry Road, between Sacramento River & the Chico-Butte City Road, 7 miles southwest of Dayton. 0 Comment
  CHSC90806  Koeleria phleoides Lowell Ahart 2005-5-2 11769 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  SEINET10869044  Koeleria phleoides Mary Susan Taylor 1978-5-7 Taylor 1594 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CAS-BOT-BC340447  Lactuca saligna Lowell Ahart 1983-9-19 4459 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  UCD133503  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  CHSC27237  Lagerstroemia indica P. Moyer 1971-9-25 3 Butte CSUC campus. W side Bus-Soc Sci. Bldg. 60 Comment
  SEINET10473493  Lagophylla Mary Susan Taylor 1980-6-29 Taylor 2991 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
  RSA755344  Lagophylla glandulosa L. Ahart 2009-7-9 16002 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  UC217501  Lagophylla glandulosa H. M. Hall 1917-5-13 10299 Butte Butte Creek Comment
  CAS-BOT-BC341304  Lagophylla glandulosa David D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  CAS-BOT-BC341311  Lagophylla glandulosa H. M. Hall 1914-8-1 9828 Butte Foothills of Sierra Nevada, near Bidwell's Bar, (Mt. Ida) Comment
  CAS-BOT-BC341312  Lagophylla glandulosa H. M. Hall 1914-8-1 9826 Butte Between Chico and Oroville. A ruderal at Heller's ranch Comment
  POM216215  Lagophylla glandulosa D. D. Keck 1933-5-31 2409 Butte Bridge crossing Mud Creek, 2.9 miles W of Richardson Springs. Comment
  JEPS104007  Lamarckia aurea Lowell Ahart 2003-4-8 10051 Butte Along the dirt road, ca 1/8 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 326 Comment
  RSA755349  Lamium amplexicaule L. P. Janeway 2008-3-18 9232 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  UCD125083  Lamium amplexicaule A. A. Heller 1920-4-10 13360 Butte Chico. Comment
  CHSC8158  Lasthenia californica D. McClain 1969-3-20 82 Butte 20 yds. from Upper Bidwell Park Rd., 1/2 mi. from entrance of Upper Bidwell Park, Chico. 60 Comment
  POM29967  Lasthenia californica C. C. Bruce 1897-12 2071 Butte [Unspecified] Comment
  CHSC90989  Lasthenia californica subsp. californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
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Jan 19 2011
  CHSC31574  Lasthenia glaberrima L. Ahart 1978-5-12 1718 Butte Near the edges of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC213344  Lathyrus jepsonii subsp. californicus Lowell Ahart 1980-6-20 2415 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  CHSC57375  Lathyrus jepsonii var. californicus Gail Bufton 1990-3-25 2 Butte S side Lindo Channel 40 ft w of intersection W. Lindo Ave and Black Oak Drive, Chico. 60 Comment
  CHSC104801  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
  JEPS113199  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir 484 Comment
  SEINET10452345  Lathyrus sulphureus Mary Susan Taylor 1980-4-16 Taylor 2497 A 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
  SEINET10940005  Lathyrus sulphureus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4227 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SEINET7042408  Lathyrus sulphureus A. G. Vestal 1963-5-30 s.n. Butte Ca 1.4 miles west of Fobestown. Forbestown quadrangle UTM Zone 10, 647446mE, 4376583mN. Comment
  CHSC10618  Layia fremontii Lowell Ahart 1970-4-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC2378  Layia fremontii R. Carter 1965-5-14 200 Butte Found 1.4 mi. W of Hwy. 40A on Old Chico Rd. along N side of road, these taken along fence. 51 Comment
  CHSC3453  Layia fremontii Judy Potter 1966-3-21 Butte Roadside-Pentz Road 1 mile east of US 99E. Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
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May 24 2013
  CAS-BOT-BC274353  Leersia oryzoides Lowell Ahart 1977-8-14 1543 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD150365  Lemna minor William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  JEPS94431  Leontodon saxatilis subsp. longirostris Lowell Ahart 1997-10-20 7923 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork of the Feather River 914 Comment
  RSA719538  Lepechinia calycina Michael A. Vincent 2006-7-29 12881 Butte East of Chico along Rt. 32. Comment
  UCD115785  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte 8 miles north of Oroville. Comment
  HSC23335  Lepidium nitidum Willis Ball 1970-3-3 74 Butte 1 mi. E of Chico Municipal Airport, Chico Comment
  CHSC101082  Lepidium nitidum var. nitidum Lowell Ahart; John Dittes 2009-3-20 15506 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  SEINET10448624  Lepidium pinnatifidum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5154 Butte T17N R1E sw/sw sec 14. Pennington quad. Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 65 ft. 20 Comment
  CAS-BOT-BC12910  Lepidium strictum John Thomas Howell 1962-6-16 37598 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC39595  Lepidium strictum Lowell Ahart 1983-4-10 3929 Butte Along the edges of dirt roads, about 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  CHSC94004  Lepidium strictum R. Fischer 2005-4-10 676 Butte Collection from along Hwy. 32, ca. 4 miles north of Chico in Bidwell Park. On the road bed of the 10 Mile House Road at the trail head. 457 Comment
  UC600713  Lepidium virginicum H. F. Copeland 1930-7-18 1333 Butte Jonesville 1524 Comment
  CDA32441  Leptochloa fascicularis Margaret Bellue Butte Afton Rd., near Biggs. 0 Comment
  CHSC1277  Leptosiphon bicolor P. Delaplane 1965-3-23 77 Butte H. Wurlitzer Ranch ca. 13 mi. NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC54187  Leptosiphon bicolor Vernon H. Oswald; Lowell Ahart 1991-5-31 4634 Butte Dan Beebe Trail in the Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool, between Oroville Dam Blvd. East and Glen Pond. 91 Comment
  CHSC54307  Leptosiphon bolanderi Vernon H. Oswald; Lowell Ahart 1991-6-5 4644 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  RSA715925  Leptosiphon filipes L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Opening under high power transmission lines. 981 Comment
  UCSB63628  Leptosiphon filipes Heinitz, Eric 1979-4-25 Butte North side of Skyway; T22N, R2E, sec. 36 (Hamlin Canyon 7.5 Quad); 30 m. north of roadside 243 Comment
  CHSC105814  Leptosiphon harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, 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
  CHSC23593  Lessingia nana L. Thomas 1972-9-26 501 Butte Upper Bidwell Park, Chico; ca. 1/2 m e of Omicron study plot. Comment
  CHSC30276  Lessingia nemaclada M. S. Taylor; J. D. Jokerst 1979-10-13 2274 Butte On w side of Jordan Hill Rd (Ponderosa Way on some maps), ca. 11.1 mi n of its jct with Concow Rd, ca. 1.9 mi n of Sawmill Peak. 853 Comment
  CAS-BOT-BC341790  Lessingia nemaclada L. P. Janeway 1993-8-23 4538 Butte Plumas National Forest, Oroville Ranger District. South end of Swayne Hill. Open along edge of dirt road 23N28 731 Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  CAS-BOT-BC342060  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi west of Oroville 45 Comment
  CHSC44110  Lewisia kelloggii subsp. hutchisonii L. P. Janeway; R. A. Schlising 1988-7-22 3047 Butte Area of saddle between Coon Hollow and Chips Cr. Near jeep trail. 1920 Comment
  CHSC27995  Ligusticum californicum M. S. Taylor 1978-7-18 1679 Butte On w side of Hwy. 32 on edge of Yellow Pine Forest, ca. 1/4 mi n of Forest Ranch. 718 Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  CHSC43047  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-27 2334 Butte Along dirt rd 0.6 mi east of Ramsey Bar; just north of 'The Big Hill. 1386 Comment
  RSA727543  Limnanthes alba Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills: along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset. 701 Comment
  RSA176424  Limnanthes alba A. A. Heller 1926-4-12 s.n. Butte 8 miles north of Chico. Comment
  SEINET10495211  Limnanthes alba Mary Susan Taylor 1976-4-27 Taylor 1094 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  UCSB45759  Limnanthes douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road, 6 miles north on Derrick Road from Table Mt. Road Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CHSC96368  Limnanthes douglasii subsp. nivea R. L. Macdonald; C. L. Owens 2006-4-6 Butte Sacramento Valley. Openshaw Ranch BCAG mitigation area; 7 miles north of Oroville, 0.9 miles northwest of junction Hwy 149 and Hwy 70 (Wicks Corner), 650 ft northeast of Openshaw Rd. 81 Comment
  CHSC67541  Limnanthes douglasii subsp. rosea James D. Jokerst; M. S. Taylor 1980-3-20 486 Butte 50 m NW of junction of Bruce Rd. and Skyway, SE side Chico. Comment
  UC726867  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (below blue oak belt) Comment
  POM282577  Limnanthes douglasii subsp. rosea Lyman Benson 1935-3-27 6364 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) Comment
  CHSC67558  Limnanthes floccosa subsp. floccosa James D. Jokerst 1980-3-27 519 Butte E of Cohasset Hwy. at Chico Municipal Airport. 67 Comment
  UCR247449  Limnophila X ludoviciana Cass 2012-10-31 s.n. Butte Nelson, Aguas Frias Road and Nelson Road 31 Comment
  CHSC50688  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  CHSC80561  Limosella acaulis Lowell Ahart 2001-5-3 8736 Butte On the bottom of one of the large holding ponds, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC1562434  Limosella acaulis Lowell Ahart 1990-4-23 6464 Butte dirt road about 1/2 mi e of Larkin Road about 1 mi s Oroville Airport 45 Comment
  SEINET12319548  Linanthus filipes Unknown 1978-1 2 Butte 3 mi NE of Butte Creek bridge between Chico and Paradise Comment
  JEPS117409  Linanthus parviflorus Lowell Ahart 2010-5-7 16628 Butte On both sides of Guardian Trail, about 1/2 miles west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 238 Comment
  CHSC42723  Linnaea borealis var. longiflora Lowell Ahart 1987-5-22 5680 Butte About 1/8 mile north-east of Camp 18, about 61/2 miles north-east of Feather Falls. 1219 Comment
  RSA4239  Linum lewisii E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  SEINET12186045  Linum micranthum L. Ahart, Ahart, P. 1983-1 4094 Butte along Bloomer Hill Rd., 1.3 mi W of Oroville-Quincy Hwy, 15 mi NE of Oroville 450 Comment
  CHSC38910  Lipocarpha aristulata Vernon Oswald 1983-7-8 841 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  SEINET10477991  Lithocarpus densiflorus var. echinoides Mary Susan Taylor 1980-5-27 Taylor 2642 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
  CHSC3976  Lithophragma E. P. Parreno 1967-4-10 Butte Not so common locally. 300 yards from covered bridge. Comment
  CAS-BOT-BC432267  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC43745  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1987-6-10 2985 Butte Forest Service road to Sunflower Flat joining Humbug Rd. in about the center of Section 22, s to the end of a spur road from the bottom center of Section 23, ca. 2.5 mi se of Butte Creek House. 1950 Comment
  RSA157759  Lithophragma heterophyllum I. L. Wiggins 1925-3-22 1474 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  CHSC3405  Lithophragma parviflorum Alice L. Stoll 1966-3-26 81 Butte On Humbug Road near the Covered Bridge on way to Paradise. Comment
  CHSC87426  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-20 116 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along Guardian Trail, south of Pine Trail. UTM: 10609476E 4405711N. 384 Comment
  CHSC1654  Lithophragma parviflorum var. trifoliatum V. Holt 1935-3-27 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC27667  Lithospermum californicum Mike O'Bryan; Robert A. Schlising 1978-4-17 3219 Butte N of Forest Ranch, on ridge above Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  SEINET10497331  Lithospermum californicum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4090 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
  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
  CHSC28825  Logfia gallica J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 417 Butte Top of Table Mt, ca 1.0 mi n of Cherokee Rd (at e edge of Mt). Along edges of dirt roads. 381 Comment
  CHSC6633  Lolium M. MacArthur 1968-6-16 350 Butte 20 ft. SW of Big Chico Creek, just S of Esplanade Bridge, Chico State College campus. 60 Comment
  CHSC82719  Lolium multiflorum Tara Morgan 2002-4-23 46 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  SEINET10454776  Lomatium humile Mary Susan Taylor 1979-5-6 Taylor 1992 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC42477  Lomatium macrocarpum Lowell Ahart 1987-5-11 5616 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC101147  Lomatium utriculatum Lowell Ahart 2009-5-15 15675 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC27673  Lomatium utriculatum Robert A. Schlising 1978-4-23 3226 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and W of S. T. RR and Coutelenc Road. Comment
  CHSC77417  Lomatium utriculatum Laura Bogni 1997-3-25 23 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  JEPS26742  Lomatium utriculatum P. C. Hutchison 1961-6-9 2092 Butte 7 mi. s. Jarbos Gap (n. fork Feather R. along Hwy. U.S. Alt. 40); n. fork Feather R. Comment
  RSA4160  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville. 1550 Comment
  CAS-BOT-BC240451  Lonicera hispidula Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CAS-BOT-BC240452  Lonicera hispidula John Thomas Howell; T. C. Fuller; G. D. Barbe 1981-6-26 54412 Butte Madrone Lake near Berry Creek 600 Comment
  CAS-BOT-BC240684  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  UC1129033  Lotus crassifolius var. crassifolius P. L. Johannsen 1936-7-21 959 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  UC171019  Lotus incanus H. M. Hall 1913-5-27 Butte Stirling City Sierra Nevada Mountains Comment
  CDA31938  Lotus nevadensis var. nevadensis L. Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  UC866486  Lotus nevadensis var. nevadensis A. A. Heller 1917-7-26 12828 Butte Butte Meadows 1402 Comment
  UC862227  Lotus purshianus var. purshianus A. A. Heller 1917-7-26 12845 Butte Butte Meadows 1402 Comment
  RSA31974  Lotus scoparius var. scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  CHSC112877  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  CHSC84016  Ludwigia palustris Lowell Ahart 2003-6-23 10312 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UCD78323  Ludwigia peploides subsp. peploides B. J. Grewell; Steve Cordes 2005-9-9 05- 24 -LU Butte Gray Lodge Wildlife Management Area, north of Sutter Buttes 20 Comment
  UC726682  Lupinus A. A. Heller 1942-5-18 16478 Butte a short distance w of the Hooker Oak e Chico Comment
  SEINET11268145  Lupinus albicaulis Lowell Ahart 1993-6-16 6965 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown.; 0 610 Comment
  CHSC34692  Lupinus albicaulis var. shastensis M. S. Taylor 1981-5-14 3716 Butte N side of 23N00.2, 2.9 mi sw of Merrimac on Oroville-Quincy Hwy. 975 Comment
  CHSC109065  Lupinus albifrons var. albifrons Lowell Ahart 2012-4-20 17895 Butte On the west side of the South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 254 Comment
  CHSC115358  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte Steep east road cut, along Oregon Gulch Road, about one mile south of Oregon city, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  CAS-BOT-BC196250  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  POM196154  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte Above Jonesville. 2000 Comment
  UCD106673  Lupinus arbustus A. A. Heller 1917-7-29 12853 Butte Summit above Jonesville. 2133 Comment
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  HSC32403  Lupinus bicolor Kitsy Kelly 1974-4-20 22 Butte Table Mtn. Volcanic area Comment
  UC865499  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 mi below Centerville (in Sierra foothills); Sierra foothills, below Centerville Comment
  HSC32640  Lupinus bicolor Dave Knorr 1974-4-20 130 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  SEINET10484853  Lupinus bicolor Barbara J. Ertter, Jeffrey Strachen; Lowell Ahart 1980-5-7 Ertter 3306 Butte North Table Mountain ca 5 airmiles north of Oroville, flat-topped basalt butte, near parking area. 396 Comment
  CHSC48525  Lupinus bicolor var. pipersmithii Vernon Oswald 1985-3-17 1686 Butte Peter Ahart Ranch ca. 2 mi ne of Honcut. 32 Comment
  CHSC26255  Lupinus bicolor var. tridentatus John Steiner 1977-4-23 58 Butte Growing adjacent to s bank of Chico Creek at e end of Chico Canyon Rd. 65 Comment
  CHSC3186  Lupinus bicolor var. tridentatus Dona Kingsford 1966-3-30 Butte Table Mountain, NE of Chico. Comment
  POM253152  Lupinus densiflorus var. aureus A. A. Heller 1938-5-15 15094 Butte Plentiful along the railroad near Gridley. Comment
  SD2440  Lupinus laxiflorus var. silvicola E. B. Copeland 1930-6-29 Butte Jonesville 1600 Comment
  UC727202  Lupinus microcarpus var. densiflorus A. A. Heller 1942-5-17 16476 Butte about 1/4 mi w Wick's Corner Comment
  UC204540  Lupinus nanus A. A. Heller 1914-4-21 11311 Butte Chico Comment
  UCD109258  Lupinus nanus Michael A. Vincent; Ethan H. Freid 1998-4-6 8117 Butte Table Mountain. Comment
  UCD109078  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  SEINET10484054  Lupinus nanus subsp. nanus Mary Susan Taylor 1981-4-14 Taylor 3528 Butte Valley Grassland, NW corner of the jct of Wheelock Rd and Hwy 70, ca. 5 mi N of Oroville. 137 Comment
  CHSC113126  Lupinus nanus var. vallicola Lowell Ahart 2013-11-18 19283 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC3924  Lupinus polycarpus Wayne O. Baum 1967-3-17 10 Butte In triangle area, on e. side of Cohasset Rd. and ca. 3.2 mi. n. of Chico. 60 Comment
  SEINET10452663  Lupinus stiversii Mary Susan Taylor 1980-5-27 Taylor 2715 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  POM24039  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-04 2035 Butte [name of locality illegible] Comment
  CHSC52704  Luzula cascadensis L. P. Janeway 1987-5-28 2107 Butte Spring at the Soapstone Mine; near 4-trees Road 1.0 mi west of OroQuincy Hwy. 1493 Comment
  JEPS117180  Luzula cascadensis Lowell Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  UC600797  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville Jonesville (in swamp) 1524 Comment
  RSA699515  Luzula comosa Paul Maslin 2004-3-17 4 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve. 378 Comment
  RSA0116259  Luzula comosa var. comosa Lowell A. Ahart 2014-7-10 19634 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC52709  Luzula comosa var. laxa L. P. Janeway 1988-6-19 2840 Butte 3.3 mi N of Stirling City toward Inskip, along logging road 0.2 mi W of Skyway. Seepy area adjacent to the road. 1219 Comment
  SEINET3872267  Luzula comosa var. laxa Lowell Ahart 2010-9-21 17203 Butte About 1/5 of a clump, on damp humus, under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek; about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. Red FIr Forest.; 0 1918 Comment
  CHSC29251  Luzula macrantha M. S. Taylor 1976-4-24 1076 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC96801  Luzula macrantha Lowell Ahart 2007-4-30 13705 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS115962  Luzula macrantha Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  SEINET10472542  Luzula macrantha Mary Susan Taylor 1981-3-24 Taylor 3435 A Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  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
  CHSC51222  Lycopus americanus Lowell Ahart 1984-8-19 4783 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 30 Comment
  JEPS94688  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  JEPS117550  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  JEPS127012  Lythrum hyssopifolia Lowell Ahart 2016-5-24 20861 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UC138248  Lythrum hyssopifolia E. B. Copeland 1903-7-27 3485 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  JEPS104343  Lythrum portula Lowell Ahart 2003-6-23 10301 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
  SEINET3450927  Lythrum portula Unknown 2003-6-23 10301 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  JEPS113572 Image available Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of 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
  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
  UC1586554  Lythrum tribracteatum Lowell Ahart 1991-5-20 6655 Butte about 10 mi sw of Gridley (about 1/4 mi w of Pennington Road, on n side of Rutherford Road, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area, Rutherford Road 19 Comment
  SEINET11601342 Image available Madia elegans M. J. Williams, W. Roderick 1984-5-25 84- 21 -3 Butte 3.3 miles from Paradise on Honey Run Road. 168 Comment
  CAS-BOT-BC342713  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC52002  Madia elegans subsp. densifolia B. Castro 1987-9-25 228 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  SEINET10938055  Madia elegans subsp. densifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4116 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC62714  Madia elegans subsp. elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  SEINET10971183  Madia glomerata Mary Susan Taylor 1977-8-17 Taylor 1456 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SD5628  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  CAS-BOT-BC342958  Madia gracilis A. A. Heller No date on label 12816 Butte Butte Meadows 1402 Comment
  JEPS98930  Madia subspicata Bruce G. Baldwin, Gerald D. Carr, Lowell Ahart 1988-6-9 713 Butte 1 mi N, 3 mi E of Honcut (Peter Ahart Ranch, above North Honcut Creek) Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC2307  Maianthemum racemosum F. Hedglin 1954-5-30 Butte Rag Dump 5, near Stirling. 1097 Comment
  SD122591  Malacothrix floccifera Lowell Ahart 1984-6-8 4670 Butte At the Ponderosa Dam, 2.0 miles northwest of Forbestown. 370 Comment
  JEPS115578  Malva nicaeensis Lowell Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC46834  Malva parviflora R. A. Schlising 1986-11-28 4510 Butte Gray Lodge Waterfowl Management Area. 18 Comment
  CHSC44978  Marah fabacea J. Witzman 1987-3-7 6 Butte Along Butte Creek nr Humbug Rd. ca 3 mi n of jct with Skyway, se of Chico. 97 Comment
  RSA440948  Marah fabacea K. M. Stocking 1947-4-17 29 Butte 9.6 miles from Paradise on Oroville road. 76 Comment
  CHSC52337  Marah fabacea var. agrestis Pauleen Broyles 1987-4-24 1000 Butte The Nature Conservancy Vina Plains Preserve. Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  SEINET10448099  Marah watsonii Mary Susan Taylor 1980-4-18 Taylor 2525 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
  CDA34161  Marrubium vulgare L. Ahart 2009-4-22 15581 Butte On the east side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC30714  Marsilea vestita M. S. Taylor 1980-7-6 3051 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
  CHSC34154  Marsilea vestita L. Ahart 1981-8-31 3059 Butte Wyandotte Lake, ca. 8 mi e of Oroville. 450 Comment
  CHSC58671  Marsilea vestita M. Bailey 1991-7-27 Butte Lake Concow Reservoir. 762 Comment
  HSC36095  Marsilea vestita George L. Williams 1962-4-12 Butte Oroville Comment
  JEPS95880 Image available Marsilea vestita subsp. vestita Lowell Ahart and Vernon H. Oswald 1999-10-3 8286 Butte 12 air miles SW of Chico (Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 2 mi SE of Ordbend) 32 Comment
  HSC95531  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte 100 yards E of Parking lot 10, Gray Lodge State Wildlife Management Area, about 4 mi. SW of Gridley 23 Comment
  UCR237320  Matricaria matricarioides George K. Helmkamp, E. A. Helmkamp 2012-4-14 18740 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC109592  Medicago arabica Lowell Ahart 2012-5-14 18056 Butte Just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. 74 Comment
  SEINET12155158  Medicago arabica P. L. Ricker 1912-1 8952 Butte Chico Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC43669  Medicago minima Vernon Oswald 1987-4-7 2312 Butte Butte Creek Reserve on the north edge of the creek ca. 0.1 mi e of Hwy 99. 65 Comment
  CHSC71175  Medicago polymorpha Lowell Ahart 1998-6-9 7978 Butte On the east side of Cherokee Road, about 200 yards south of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCD107844  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  CHSC70851  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  JEPS94656  Medicago praecox Lowell Ahart 1998-4-8 7947 Butte 0.1 mi n Thermalito Diversion Dam (w of dirt road, e of the Thermalito Diversion Pool, 1/4 mi ne of Oroville) 67 Comment
  UC171941  Medicago sativa P. L. Ricker 1912-5-9 3920 Butte Chico Comment
  JEPS110265  Melica aristata Lowell Ahart 2006-6-24 12861 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 1128 Comment
  UC1564803  Melica aristata V. Oswald and L. Ahart 1989-7-12 3843 Butte 0.6 air mi nnw Bald Mt. Lookout (ne of Stirling City, logging road (T-line)) 1560 Comment
  UCD67023  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville. 1550 Comment
  JEPS110457  Melica bulbosa Lowell Ahart 2006-7-16 13009 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
  CHSC35966  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  CHSC39319  Melica californica Lowell Ahart 1983-6-26 4108 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC8251  Melica californica B. Hamilton 1969-4-17 16 Butte Found near Horseshoe Lake in Bidwell Upper Park. Comment
  UCD80579  Melica californica CNPS SN Foothill Team 2005-3-30 SNFN 0028 a Butte CDFG North Table Mountain Wildlife Area, at the northern tip of the Y-shaped ravine that bisects the reserve. 369 Comment
  CHSC115277  Melica californica var. californica Lowell Ahart 2015-4-30 20122 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Chaparral. 890 Comment
  CAS-BOT-BC282050  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  UC600752  Melica fugax H. F. Copeland 1929-6-12 1210 Butte near mouth of Willow Creek (Jonesville); Jonesville 1524 Comment
  SEINET10901843  Melica harfordii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4231 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CAS-BOT-BC281020  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Skirting the N flank of Humboldt Peak on the Butte - Plumas county border, S of the Pacific Crest Trail 2072 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  UC600754  Melica subulata H. F. Copeland 1931-6-9 Butte near junction of Jones Creek and Willow Creek (Jonesville); Jonesville 1524 Comment
  CHSC86105  Melica torreyana L. P. Janeway; John Hunt 2003-4-22 7765 Butte Northern Sierra Nevada Foothills. Peninsula on west side of Lake Oroville at Goat Ranch Campground; 2.9 km west of Bloomer Hill. 287 Comment
  CHSC31422  Melilotus albus L. Ahart 1980-9-10 2629 Butte Along edge of the road ca. 1 mi ne of Millsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  CHSC42525  Melilotus albus Lowell Ahart 1987-5-27 5714 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
  UCD107993  Melilotus albus L. Ahart 1982-7-10 3670 Butte 1/4 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Comment
  JEPS115362  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  UCD125116  Mentha Jerry Smith 1974-6-17 s.n. Butte Near Oroville. Comment
  CHSC43840  Mentha canadensis B. Castro 1987-8-25 210 Butte In midstream Butte Ck ca. 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  CHSC756  Mentha canadensis E. Walker 1932-7-26 Butte Magalia Heights. 731 Comment
  UC1562283  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte on bottom of Wyman Ravine on e side of Lincoln Boulevard Palermo (Palermo) 45 Comment
  UC1594545  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  CHSC50109  Menyanthes trifoliata Vernon Oswald 1990-5-9 4194 Butte Boy Scout Camp at Chico Meadows, ca. 1 mile north of Butte Meadows. Growing in a boggy area on the seepy slope slightly northeast of the 'swimming hole. 1295 Comment
  RSA4124  Mertensia ciliata var. stomatechoides E. B. Copeland 1930-6-23 450 Butte Jonesville. 1500 Comment
  CAS-BOT-BC428765  Micranthes californica Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain. 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
  CHSC64220  Micranthes oregana S. C. Morey 1983-8-2 677 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10971129  Micropus californicus Mary Susan Taylor 1975-4-26 Taylor 514 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  UCD134508  Micropus californicus E. H. Stanford 1940-4-14 s.n. Butte Morrison Ravine at Cherokee. Comment
  JEPS115236  Microseris acuminata Lowell Ahart, John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  CAS-BOT-BC348704  Microseris acuminata J. D. Jokerst 1982-4-12 1524 A Butte West edge of Highway 149 3/10 mile north of Highway 70 Comment
  CAS-BOT-BC348876  Microseris douglasii subsp. douglasii Lowell Ahart 1985-4-29 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC43627  Microseris nutans Vernon Oswald 1984-6-11 1277 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CHSC54092  Microseris sylvatica Vernon H. Oswald; Lowell Ahart 1991-5-13 4588 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 121 Comment
  CHSC30357  Microsteris gracilis J. D. Jokerst 1979-3-5 1137 Butte Top of North Table Mt., 300 m NW of the intersection of E edge of section 17 and Cherokee Rd. 300 Comment
  CHSC92560  Microsteris gracilis L. P. Janeway 2005-3-1 8337 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  RSA4468  Microsteris gracilis subsp. humilis E. B. Copeland 1931-6-29 680 Butte Jonesville. 1500 Comment
  SEINET12326951  Mimulus angustatus D. K. Aust 1981-1 18 Butte Cohasset Ridge, ca 6 mi NW of Chico 482 Comment
  JEPS115847  Mimulus aurantiacus var. grandiflorus Lowell Ahart 2009-4-22 15602 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC943806  Mimulus aurantiacus var. grandiflorus H. E. McMinn 1946-5-10 5503 Butte ca. 9 mi e Oroville Comment
  HSC96068  Mimulus bicolor L. P. Janeway 2005-5-29 8398 Butte Northern High Sierra Nevada. Between the E end of Hollywood Dr., Magalia and upper end of Magalia Reservoir 762 Comment
  SEINET10570195  Mimulus bicolor Mary Susan Taylor 1980-5-8 Taylor 2590 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
  RSA183143  Mimulus breweri E. B. Copeland 1930-7-28 s.n. Butte Neighborhood of Jonesville, along So. Willow Creek 1829 Comment
  CHSC118882  Mimulus glaucescens Christopher T. Ivey 2017-5-27 391 Butte Honeyrun Road, about 6 km NE of bridge crossing Butte Creek, roadside ditch on S side or road. 424 Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  RSA792429  Mimulus glaucescens Dena Grossenbacher, Brian Green 2008-5-4 815 Butte Upper Bidwell Park on banks of Lindo Diversion Channel north of Centennial Ave. 80 Comment
  SEINET12334054  Mimulus glaucescens Unknown 1974-1 20 Butte Cohasset Rd, N ca 7.5 mi from Chico Muni. Airport & 7.5 mi from Cohasset 305 Comment
  CHSC118883  Mimulus guttatus Christopher T. Ivey 2017-5-27 387 Butte Centerville Road, about 1.5 km NE of Honeyrun bridge, large wet meadow N side of road, growing among Typha latifolia, Rubus cf. armeniacus. 119 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
  UC725754  Mimulus latidens A. A. Heller 1940-5-13 15615 Butte 3 mi w Chico (on State Highway #32) Comment
  UC454131  Mimulus moniliformis Miss Kate Conger 1907-1 Butte Brush Creek 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
  CHSC64052  Mimulus moschatus S. C. Morey 1984-8-4 709 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  POM219092  Mimulus moschatus H. F. Copeland 1927-9-3 361 Butte Jonesville. Comment
  UC1509660  Mimulus nasutus M. S. Taylor and K. Tharp 1983-3-12 5442 Butte ca. 3 mi sse Chico (along small rd. off Stillson Canyon Rd. (leading to Mannion property)); Chico quad. 152 Comment
  UCD122947  Mimulus tricolor L. Ahart 1978-5-1 1687 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 50 Comment
  CHSC10733  Minuartia californica Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UCD80209  Minuartia californica CNPS SN Foothill Team 2005-5-4 SNFN 0200 b Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  SEINET11933236  Minuartia douglasii S. E. Bigbee 1984-1 62 Butte Ca 400 yds W of Cherkee Rd on Table Mt., ca 12 mi N of Oroville 396 Comment
  SEINET11678968  Miscanthus sinensis C. V. Piper 1907-1 SPT 17962 Butte Chico Comment
  CHSC77986  Moehringia macrophylla Lowell Ahart 2000-5-10 8336 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  CHSC28460  Mollugo verticillata R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. In sand of river bar. Comment
  CHSC97743  Mollugo verticillata Lowell Ahart 2007-11-3 14569 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  POM68686  Mollugo verticillata C. C. Bruce 1897-06 1933 Butte [No location information on label.] Comment
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  UC196297  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  CAS-BOT-BC219942  Monardella breweri subsp. lanceolata Mrs. J. H. Morrison 1932-6-12 s.n. Butte Above Durham Comment
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  CHSC52036  Monardella odoratissima subsp. pallida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-1 271 Butte Near edge of Retson Rd e of Stirling City. 1091 Comment
  CHSC52213  Monardella sheltonii L. P. Janeway 1988-6-25 2888 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  CHSC769  Monardella sheltonii M. Underhill 1952-7-2 Butte 152 Comment
  RSA32914  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  UCD125264  Monardella venosa B. Castro; J. D. Jokerst 1992-5-19 457 Butte bottom of unnamed canyon southeast of Neal Road, ca. 200 feet northwest of intermittent creek. 79 Comment
  RSA718313  Monardella villosa subsp. sheltonii L. Ahart 2006-6-9 12655 Butte on east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 386 Comment
  SEINET10572657  Montia diffusa Mary Susan Taylor 1981-5-5 Taylor 3615 Butte T20N R6E se/se sec 11 Forbestown quad. Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi S of Feather Falls trailhead, ca. 0.5 air mi N of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  CAS-BOT-BC444890  Montia fontana L. P. Janeway 1988-6-25 2871 Butte In Coon Creek and near Bull Hill Road 1.0 mi from Skyway. 1554 Comment
  CHSC50417  Montia fontana subsp. amporitana Vernon Oswald; Lowell Ahart 1990-6-20 4301 Butte High Lakes Rd ca. 0.5 mi south-southwest of Carr Mine, east of Philbrook Reservoir. Common among Veratrum on a moist meadow just south of the road. 1828 Comment
  JEPS116117  Montia parvifolia Lowell Ahart 2009-5-15 15718 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
  UC83795  Montia parvifolia Mrs. R. M. Austin 1883-5-1 45 Butte Little Chico Canyon Comment
  UCD86404  Muhlenbergia andina William Anderson 1965-8-7 s.n. Butte Deer Creek Falls. State Hwy. 32. Comment
  CHSC34187  Muhlenbergia filiformis L. Ahart 1981-9-15 3168 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC41526  Muhlenbergia rigens R. L. Ondricek-Fallscheer 1982-10-24 158 Butte Below seepage area, on rim of cliff, se side of tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 152 Comment
  CHSC90829  Myosotis discolor Lowell Ahart 2005-5-2 11756 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC83266  Myosurus minimus Lowell Ahart 1981-4-6 2746 Butte Southeast of the Gray Lodge Headquarters, ca. 8 miles southwest of Gridley. 35 Comment
  CHSC31635  Myriophyllum hippuroides L. Ahart 1976-7-15 1173 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 60 Comment
  UCD150342  Myriophyllum sibiricum William Anderson 1964-8-22 s.n. Butte Biggs. Comment
  UC1100015  Najas guadalupensis Herbert L. Mason, Verne Grant 1946-8-14 13043 Butte Butte Sink Comment
  CAS-BOT-BC259752  Nassella cernua A. A. Heller 1902-5-8 5497 Butte Berry Canyon (near Clear Creek) Comment
  CHSC13808  Nassella pulchra J. G. Moore 1969-4-18 11 Butte Along side road on Cherokee Rd. 2.5 mi. s of Hwy. 70. 365 Comment
  CHSC34245  Navarretia capillaris M. S. Taylor 1981-8-16 4211 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  CHSC35112  Navarretia capillaris R. Schlising 1980-6-20 4102 Butte NE part of county at Jones Meadow. 1767 Comment
  CHSC26880  Navarretia divaricata K. R. Stern 1974-6-30 5773 Butte Ca. 2 mi w of Philbrook Reservoir. Comment
  SEINET12290261  Navarretia divaricata Unknown 1982-1 3533 Butte 1.5 mi E of camp 18, about 8 air mi E of Feather Falls 1280 Comment
  CHSC47065  Navarretia filicaulis R. A. Schlising; P. Broyles 1988-7-9 4573 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  CHSC29704  Navarretia intertexta J. D. Jokerst 1980-5-28 791 Butte In the bottom of vernal pools. Top of North Table Mt., S of Cherokee Rd. 403 Comment
  UC133921  Navarretia intertexta Mrs. R. M. Austin May 1896 171 Butte Butte Creek Comment
  UCD80643  Navarretia intertexta subsp. intertexta CNPS SN Foothill Team 2005-4-12 SNFN 0077 g Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  UC600669  Navarretia intertexta subsp. propinqua E. B. Copeland 1931-7-17 Butte Dry Lake Jonesville Comment
  CHSC1295  Navarretia leucocephala J. Gulick 1929-4-18 Butte Rifle Range, near Chico creek. 76 Comment
  CHSC7090  Navarretia leucocephala R. Smallwood 1969-5-1 3 Butte 20 yds. e of main entrance to Chico Municipal Airport, on Cohasset Highway 3 mi ne of Chico. 36 Comment
  SEINET10496831  Navarretia leucocephala Mary Susan Taylor 1978-5-7 Taylor 1596 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC103711  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC38602  Navarretia leucocephala subsp. leucocephala Vernon Oswald 1983-4-20 355 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft. e of the junction of Upper Park Rd. and Wildwood Ave.). Bed of vernal pond. 85 Comment
  CHSC75392  Navarretia leucocephala subsp. leucocephala Jennifer Slater 1997-4-20 24 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC233625  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  JEPS107888  Navarretia pubescens Lowell Ahart 2005-5-28 11819 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UCD37444  Navarretia pubescens Beecher Crampton 1960-6-15 5624 Butte Butte County, 10 miles southeast of central Chico. Comment
  CHSC12530  Navarretia tagetina J. Pitts 1973-5-2 182 Butte Ca. one eighth mi e of Clark Road on Pentz Road, s side of road. Comment
  CHSC36705  Navarretia tagetina D. H. Ikeda 1980-5-10 358 Butte 0.7 mi e of intersection of Hwy. 99 and Neal Rd. on s side of road. Comment
  JEPS107887  Navarretia tagetina Lowell Ahart 2005-5-28 11816 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville 91 Comment
  SEINET12332632  Navarretia tagetina Unknown 1988-1 20 Butte SW corner of intersection of Hwy 99 and Broyles Rd, ca 11 mi N of Chico 67 Comment
  CHSC46822  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-7-5 3826 Butte N part of county, ca. 0.2 mi s of junction of Humboldt Road, along Hwy 32 at Lomo. Comment
  CHSC68661  Nemacladus capillaris Lowell Ahart 1997-5-29 7741 Butte About 100 yards south of the dirt road and basalt quarry, south of Lumpkin ridge Road, about 1 and 1/4 miles east of Camp 18, east of Feather Falls. 1280 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
  CHSC24148  Nemophila heterophylla B. Bunge 1976-4-12 11 Butte Ca. 25 yd. n of Butte Creek and 25 yd. w of Covered Bridge; ca. 8 mi. e of Chico. 106 Comment
  CHSC77431  Nemophila heterophylla Laura Bogni 1997-3-25 8 Butte Magalia grove; west side of Coutelenc Rd., 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  UCD119996  Nemophila heterophylla K. Esau; M. Phillips 1929-4-13 1918 Butte Chico. Comment
  UCSC009427  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 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 304 Comment
  CHSC27154  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  CHSC112924  Nicotiana acuminata var. multiflora B. Castro; R. Carter 2010-7-13 1823 Butte Sacramento Valley. S side of Thermalito Power Canal ca 0.3 mi E of Hwy 70, ca 0.25 mi W of Table Mtn Blvd and ca 0.25 mi S of Garden Drive , on the north end of Oroville. 70 Comment
  UCD110175  Notholithocarpus densiflorus Leonard H. Day 1948-7-11 s.n. Butte About 5 miles above town of Feather Falls at top of Quartz Hill on road to Cascade. 1371 Comment
  UCD170588  Notholithocarpus densiflorus var. densiflorus D. O. Burge; V. Church 2017-9-3 2291 Butte Stirling City area, roadside on Skyway. 1020 Comment
  RSA0012849  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  UC844103  Odontostomum hartwegii Lewis S. Rose 1937-6-10 37362 Butte Hurleton 579 Comment
  POM110257  Odontostomum hartwegii C. C. Bruce 1897-04 1837 Butte Butte Creek Comment
  CAS-BOT-BC71182  Ophioglossum californicum Lowell Ahart 1984-2-18 4496 Butte On the Joie Osgood Ranch, about 4 miles northeast of Honcut 85 Comment
  JEPS124174  Orobanche uniflora var. uniflora Lowell Ahart 2015-3-14 19955 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC558451  Orobanche vallicola E. B. Copeland 1936-11-2 Butte Chico Comment
  NY90836  Orthocarpus bidwelliae A. E. Bidwell s.n. Butte Near Chico. Comment
  CHSC42640  Osmorhiza occidentalis Vernon Oswald 1985-7-21 1908 Butte Jones Meadow Rd. ca. 0.1 mi s of its jct. with the dirt road coming in from Inskeep, ca. 0.7 air mi wnw of Jones Meadow Lake. 1737 Comment
  CHSC89745  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  CHSC47852  Oxalis bowiei Vernon H. Oswald 1989-11-10 4027 Butte Table Mtn Blvd, 0.7 mi nw of Garden Drive, Thermalito. Along the edge of road at the bottom of railroad right of way. 91 Comment
  CHSC4056  Oxalis corniculata J. Wheeler 1967-5-20 29 Butte In lawn at 248 Serviss St. Durham. Comment
  CHSC20095  Oxalis pes-caprae M. S. Taylor 1975-4-6 432 Butte Along fence on ne corner of Arcadian St. and 4th Avenue, Chico. 60 Comment
  SEINET11799184  Packera eurycephala var. lewisrosei L. S. Rose 1939-1 39247 Butte North Fork of Feather River, 3 mi S of Pulga 610 Comment
  CHSC4395  Panicum acuminatum var. acuminatum R. L. Smith 1966-5-20 Butte Paradise, 5 mi sw of Post Office. Comment
  CAS-BOT-BC253697  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte Bottom of North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  UCD89528  Panicum capillare E. M. Johnston 1915-1 W- 143 J Butte Biggs. Comment
  SEINET10507745  Panicum capillare Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4239 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  UCD88690  Paspalum boscianum Elizabeth Wilson 1934-8-9 s.n. Butte Biggs Rice Station. Comment
  CAS-BOT-BC259621  Paspalum dilatatum John Thomas Howell 1959-9-20 34668 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC259622  Paspalum dilatatum Lowell Ahart 1982-10-15 3895 Butte Along the edges of N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC88476  Paspalum dilatatum L. P. Janeway 2004-6-20 8138 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  JEPS116010  Paspalum dilatatum Lowell Ahart 2009-7-3 15993 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  UCR219107  Paspalum dilatatum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15599 Butte Sierra Nevada Mountains Foothills, Oro Dam Blvd. c. 2 mi. NE of Oroville and about one mile SW of the dam 88 Comment
  UCD88967  Paspalum distichum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  JEPS117143  Pectocarya pusilla Lowell Ahart 2010-4-30 16595 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC32814  Pedicularis densiflora W. Michael Foster 1981-4-13 1 Butte Ca. 200 ft ne of Cherokee rd and ca. 10 mi n of Oroville. 304 Comment
  CHSC97020  Pedicularis racemosa L. P. Janeway 2007-7-23 9123 Butte Northern High Sierra Nevada. Plumas National Forest; north side of Cascade Creek about 0.2 km southwest of the Road 22N94 bridge. 1177 Comment
  CDA41862  Pedicularis racemosa L. Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 (air) southwest of the Sly Creek Reservoir Dam. Comment
  JEPS104423  Pedicularis racemosa Lowell Ahart 2003-8-26 10543 Butte On the w side of the dirt road, w of where Pinkard Creek flows into the Lost Creek Reservoir, ca 3/8 mi n of the Lost Creek Reservoir Dam, 1 1/8 mi (air) sw of the Sly Creek Reservoir Dam. 996 Comment
  RSA4461  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  POM23246  Pellaea andromedifolia E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  SEINET10529789  Pellaea andromedifolia Mary Susan Taylor Taylor 988 Butte Bidwell Park, Chico. 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
  SEINET10529813  Pellaea mucronata var. californica Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3478 Butte T23N R4W east center sec 30; Paradise quad; open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd/ Ponderosa Way, ca. 1 air mi ne of Magalia; serpentine outcrop; 2300 ft. 701 Comment
  CHSC42869  Penstemon azureus Lowell Ahart 1987-5-9 5580 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC88056  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1 mile s. of this junction. 643 Comment
  SEINET10547579  Penstemon azureus var. azureus Lowell Ahart 1985-5-15 Ahart 4988 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  SEINET10865355  Penstemon azureus var. azureus Heidi H. Schmidt 1993-6-15 Schmidt 868 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
  CHSC42774  Penstemon gracilentus L. P. Janeway 1987-7-5 2443 Butte 0.4 mi east on a spur rd from the Concow Rd, which is 1.0 mi SW of Jones Mdw. 1798 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  POM14699  Penstemon heterophyllus subsp. purdyi A. A. Heller, H. E. Brown 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek). From the type region. Comment
  CHSC51929  Penstemon heterophyllus var. purdyi Cathy Young 1988-4-24 13 Butte Ca. 5.5 mi NE of Chico, 50 yds SE of Hwy 32. 256 Comment
  CHSC42987  Penstemon laetus var. leptosepalus Lowell Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC44715  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 288 Butte Along Quartz Creek Rd 0.5 mi S of the Dark Canyon Bridge, 0.6 mi N of the Fall River Bridge. 1036 Comment
  JEPS93937  Penstemon laetus var. leptosepalus Vernon H. Oswald and Lowell Ahart 1998-8-11 9473 Butte Four Trees-Coyote Gap Road 0.1 mi w of Four Trees; Four Trees-Coyote Gap Road 1578 Comment
  UC1063502  Penstemon laetus var. leptosepalus P. L. Johannsen 1936-7-16 917 Butte 1 3/4 mi ese Butte Mdws; Lassen National Forest, Paynes Creek Quad. Comment
  UC1012164  Penstemon laetus var. leptosepalus F. W. Pennell and A. A. Heller 1940-6-5 25682 Butte Route 24 along Feather River (above Oroville, in Lassen Nat. Forest); Lassen Nat. Forest, along Feather River 640 Comment
  JEPS83778  Penstemon personatus Lowell Ahart 1988-7-31 6157 Butte ca 1 airmi wnw Bald Mountain (ca 3.5 airmi ne of Stirling City, sw of a branch of Last Chance Creek); wnw of Bald Mountain, sw of branch of Last Chance Creek 1066 Comment
  UCD124114  Penstemon procerus E. B. Copeland 1931-6-20 689 Butte Jonesville. 1500 Comment
  CHSC31035  Penstemon rydbergii M. S. Taylor; R. A. Schlising 1980-7-6 3086 Butte N side of Old Humboldt Rd, just w of Butte Meadows Ranger Station. 1341 Comment
  CHSC23143  Pentagramma pallida M. S. Taylor 1975-10-31 984 Butte Ca. 10 ft n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico. 152 Comment
  CHSC28897  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-2-17 2361 Butte Ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  CHSC86076  Pentagramma triangularis subsp. triangularis R. D. Fischer; Paul Maslin 2003-12-24 18 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located about 150 yds. west of a wide pull out which, in turn, is about 200 yds. south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). 548 Comment
  SFV10664  Pentagramma triangularis subsp. triangularis M. L. Vincent 1965-4-16 624 Butte Pentz Road, 0.5 miles east of Pentz school. Comment
  CHSC25263  Perideridia kelloggii M. S. Taylor 1977-6-27 1398 Butte On Butte College campus, ca. 15 mi s of Chico. 30 Comment
  JEPS117536  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CHSC1343  Persicaria amphibia V. Holt 1942-6-7 Butte Near Chico. Comment
  CAS-BOT-BC413706  Persicaria hydropiper Lowell Ahart 1982-10-6 3846 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut 50 Comment
  CAS-BOT-BC418952  Persicaria lapathifolia Lowell Ahart 1981-8-15 3041 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC113148  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 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
  CHSC31762  Persicaria maculosa L. Ahart 1977-9-20 1580 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43101  Persicaria maculosa Pauleen Broyles 1987-10-26 1092 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Parcel. Damp edges of manmade reservoir. 55 Comment
  UCD99563  Persicaria maculosa H. F. Copeland 1923-6-1 s.n. Butte Nelson. Comment
  UCD99569  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte 8 miles north of Oroville Comment
  CHSC26675  Persicaria punctata M. S. Taylor; M. Hayes 1977-8-16 1450 Butte Abundant in Clear Creek on Butte College Camputs, ca. 15 mi s of Chico. 60 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
  CHSC31381  Petrorhagia dubia J. D. Jokerst 1979-4-20 1209 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd. and the E edge of the mountain. 396 Comment
  CHSC25277  Petroselinum crispum K. R. Stern 1977-4-25 Butte Comment
  SEINET10546874  Phacelia Mary Susan Taylor 1979-10-5 Taylor 2229 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
  UC1299148  Phacelia egena Freed W. Hoffman 1951-3-19 3857 Butte lava cap bluff 16.3 mi from Chico (on road from Chico to Pentz) Comment
  CHSC28793  Phacelia hastata subsp. hastata J. D. Jokerst 1979-7-21 298 Butte Humboldt Rd., N.E. corner of Butte County, at Humboldt summit. Comment
  CHSC93982  Phacelia mutabilis R. D. Fischer 2004-6-20 769 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows, YPF at north end of Camp Lassen. 1371 Comment
  UC600783  Phacelia procera H. F. Copeland 1932-8-16 Butte woods by Butte Creek Jonesville 1500 Comment
  CHSC46199  Phacelia purpusii L. P. Janeway 1988-6-16 2802 Butte Southeast-facing outcrop above Butte Cr; along road in W side of the cyn 3.0 mi S of Humboldt Rd. 1310 Comment
  SEINET10497028  Phacelia racemosa Lowell Ahart 1985-7-16 Ahart 5146 Butte Along Willow Creek, near the Section Corner of Sections 17, 16, 20, and 21, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. Comment
  CHSC48477  Phacelia vallicola Vernon Oswald 1986-4-28 1982 Butte Overlook on the Skyway 2.6 mi s of Neal Rd. 335 Comment
  CAS-BOT-BC250703  Phalaris paradoxa Lowell Ahart 1981-5-16 2801 Butte In hole formed from irrig. pump, Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC6142  Phalaris paradoxa E. Parreno 1968-4-26 73 Butte Roadside of Humboldt Ave. leading to Stilson Canyon just a little beyond Chico Meat Co. Abbattoir., Chico. 59 Comment
  SEINET11689144  Phalaris paradoxa Unknown 1980-1 s.n. Butte Chico Game Fish Farm 0.2 mi E of Hwy 99, 1 mi N of Hwy 149 Comment
  CHSC3201  Philadelphus lewisii Gerry Carrauthers 1966-4-18 113 Butte City of Chico at East Fifth and Olive Streets. Comment
  CHSC88088  Philadelphus lewisii R. D. Fischer 2004-4-17 173 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek next to 10 Mile House Road. 213 Comment
  JEPS115611  Philadelphus lewisii Lowell Ahart 2009-5-23 15723 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  SEINET10482892  Philadelphus lewisii subsp. californicus Mary Susan Taylor 1976-5-5 Taylor 1113 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC28564  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi w of Lake Madrone. 997 Comment
  UC600674  Phlox austromontana H. F. Copeland 1920-8-8 Butte Jonesville Comment
  SEINET7042407  Phlox speciosa subsp. occidentalis 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-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  SEINET10969534  Phoradendron bolleanum subsp. densum Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5396 Butte T23N R4E sw/sw sec 30, Paradise quad. On serpentine outcrop, at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise. 1220 ft elev. 372 Comment
  SEINET5740882 Image available Phoradendron juniperinum Lowell Ahart, Peter Ahart 1985-1 5169 Butte About 2 miles W of Sly Creek Reservoir, E of the intersection of Golden Trout Crossing road on Reville Ridge.; Sly Creek Reservoir 914 Comment
  CAS-BOT-BC141250  Phoradendron serotinum subsp. tomentosum John Thomas Howell 1978-7-26 53191 Butte Open crest in volcanic agglomerate, E of Nevada City on Highway 20 at junction of road to Washington. Sierra Nevada 1310 Comment
  UC465465  Phoradendron villosum Kate E. Conger Dec. 1906 Butte Bush Creek Comment
  CHSC104009  Photinia Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16745 Butte On the north side of the path, about 100 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
  SD175856  Physalis acutifolia D. G. Kelch 2006-8-2 06 336 Butte Along Ord Ferry Road, east of old Sacramento River channel. 29 Comment
  SEINET11910680  Physocarpus capitatus M. S. Taylor, Hanson, L.; Phillips, H. 1981-1 3805 Butte Paradise SE quad. Phillips property, 685 Wagstaff,Paradise. Riparian Woodland in Yellow Pine forest; 579 Comment
  JEPS115644  Phytolacca americana Lowell Ahart 2009-8-13 16280 Butte West end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico 68 Comment
  RSA755373  Phytolacca americana L. Ahart 2009-8-13 16280 Butte At the west end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Linda Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 69 Comment
  CHSC109764  Phytolacca americana var. americana Lowell Ahart 2012-10-28 18524 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  CAS-BOT-BC76940  Pilularia americana Lowell Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC43857  Pilularia americana Vernon Oswald 1988-3-14 3256 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC71253  Pilularia americana Lowell Ahart 1998-7-1 8022 Butte About 1/4 mile north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 3 miles (air) north of Oroville. 403 Comment
  CHSC3168  Pinus contorta subsp. murrayana Dona Kingsford 1966-3-13 Butte 2 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  CHSC116565  Piperia elongata L. P. Janeway 2015-6-17 11781 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road, 0.6 km north-northeast of Ponderosa Way; 0.4 air-km west-northwest of Sunset Hill. Northwest facing slope above the road. 826 Comment
  CHSC98665  Piperia elongata B. Castro; L. P. Janeway 2005-8-1 1507 Butte Ca 0.5 mi S of Paradise Lake, on slopes overlooking Little Butte Creek, W of Coutelenc Rd and E of Creek. On NW-facing slope, along old dirt road going SW off Coutelenc Rd. 780 Comment
  UC1586560  Piperia elongata Lowell Ahart 1991-5-31 6657 Butte sw of Oroville Dam (along the Dan Beebe Trail, between Canyon Drive and Oroville Dam Blvd East); Lake Oroville Recreation Area 213 Comment
  CHSC54351  Piperia michaelii Lowell Ahart 1991-5-12 6653 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
  CHSC43590  Pistacia terebinthus Vernon Oswald 1987-4-29 2351 Butte Chico Tree Improvement Center (former USDA Plant Introdution Station) in se Chico 68 Comment
  SEINET10529820  Pityrogramma triangularis Mary Susan Taylor 1984-4-6 Taylor 5401 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  SEINET10529822  Pityrogramma triangularis Mary Susan Taylor 1980-3-8 Taylor 2369 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10529837  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1981 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
  SEINET10899934  Pityrogramma triangularis var. semipallida Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5514 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC45897  Plagiobothrys austiniae Lowell Ahart 1984-4-6 4544 Butte About 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  UC762837  Plagiobothrys austiniae R. F. Hoover 1938-4-24 3239 Butte 3 mi n Chico Comment
  CHSC47997  Plagiobothrys bracteatus Vernon Oswald 1985-4-29 1734 Butte Oroville-Quincy Hwy 0.9 mi s of Canyon Creek Bridge. 304 Comment
  UC196289  Plagiobothrys glyptocarpus A. A. Heller 1914-3-16 11202 Butte low hills 8 mi n Oroville Comment
  UC1442671  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1978-4-27 Butte Peter Ahart Ranch Honcut 50 Comment
  UC725292  Plagiobothrys greenei A. A. Heller 1938-4-14 15024 Butte along the road near Wick's Corner n Oroville Comment
  UC1609306  Plagiobothrys hispidulus Lowell Ahart 1993-9-13 7238 Butte small wash on n side Bolt Creek (about 1 mi se of Butte Meadows) 1325 Comment
  UC196309  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows w slope Sierra Nevada, Chico Meadows 1219 Comment
  CHSC28985  Plagiobothrys nothofulvus R. A. Schlising 1980-3-23 3523 Butte E of Chico and SW of Paradise along Skyway. 289 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
  SEINET10497553  Plagiobothrys nothofulvus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5239 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC31582  Plagiobothrys scriptus L. Ahart 1977-4-2 1235 Butte On bottom of small swale. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48001  Plagiobothrys shastensis Vernon Oswald 1983-4-4 263 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 Comment
  CDA34703  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico Comment
  CHSC31579  Plagiobothrys stipitatus var. micranthus L. Ahart 1974-4-14 405 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51101  Plagiobothrys stipitatus var. micranthus J. Monelo 1990-3-17 20 Butte On n side of Skyway, ca 7 mi e of Hwy 99 and ca 5 mi n of Paradise. 152 Comment
  HSC100812  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-5-14 16653 Butte Bottom and sides of drying pond, W side of the old Humboldt Rd., Disc Golf Area, ~150 yd. N of the entrance to the Disc Golf Area, ~40 yd. W of Hwy. 32, Upper Bidwell Park, 5 (air) mi. NE of Chico. 396 Comment
  JEPS117192  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 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
  JEPS117193  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16823 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
  RSA715885  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-4-2 11682 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  UCD121010  Plagiobothrys stipitatus var. micranthus W. R. Powell 1968-4-23 1470 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC46775  Plagiobothrys tenellus Lowell Ahart 1980-4-30 2139 Butte Near the bridge across Rocky Honcut Creek and Swedes Flat Road, about 3 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  CDA25096  Planodes virginica L. Ahart 2003-5-9 10123 Butte North side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. Comment
  CHSC30056  Plantago bigelovii Thomas E. Lewis 1978-4-5 11 Butte S side of Pentz-Durham Rd, ca. 1 km w of Butte College. 80 Comment
  CHSC36306  Plantago coronopus M. S. Taylor 1982-4-28 4346 Butte Graylodge Waterfowl Refuge roadsides, n side of Rutherford Rd, just w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET3449642  Plantago elongata Unknown 2003-3-31 10027 Butte Oroville, Oroville, about 5 air miles southwest, about 1.25 miles south of the Oroville Airport, about 300 yards west of Larkin Road, north side of the access road to the boat ramp at the Thermalito Afterbay 40 Comment
  UC195481  Plantago erecta A. A. Heller 1914-3-21 11221 Butte 8 mi n Oroville Comment
  CHSC88146  Plantago lanceolata Lowell Ahart 2004-7-23 11303 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  SEINET10499810  Plantago lanceolata Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4180 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Sky- way in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  SEINET10499812  Plantago lanceolata Mary Susan Taylor 1978-9-8 Taylor 1892 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC102159  Plantago major Lowell Ahart 2009-6-19 15920 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC65171  Plantago major Lowell Ahart 1995-8-19 7610 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC59030  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CHSC61527  Platanthera leucostachys Lowell Ahart 1993-6-26 7006 Butte About 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC43801  Platanthera sparsiflora Vernon Oswald 1987-6-23 3006 Butte Just w of the Skyway 1.4 mi (odometer) s of Inskip. 1426 Comment
  SBBG127997  Platanus racemosa L. Ahart 2009-8-23 16296 Butte W side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  CHSC10701  Plectritis ciliosa Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. Comment
  SEINET12318335  Plectritis ciliosa K. D. Johnson 1978-1 19 Butte on NW side of Neal Rd, 3.1 road mi SW of intersection with Skyway, Paradise 305 Comment
  POM193018  Plectritis ciliosa subsp. insignis R. M. Austin 1896-07 824 Butte [No location information provided.] Comment
  CHSC111356  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10449167  Pleuricospora fimbriolata Mary Susan Taylor 1981-4-27 Taylor 3560 Butte T21N R5E se sec 24, Brush Creek quad. Ridge between 21N33 and 21N80, ca. 1 mi SW of Bald Rock Rd, ca. 0.5 mi N of Zink Rd, ca. 2 mi SW of Brush Creek. Yellow Pine Forest; 3300 ft. 1006 Comment
  JEPS115963  Poa bulbosa Lowell Ahart 2009-4-22 15598 Butte South side of Guardians Trail, about 50 yards west 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
  CDA14074  Poa compressa G. F. Hrusa, T. D. Wilfred 1997-7-3 13957 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Rhizomatous perennial in moist, formerly disturbed areas at lake margin. Comment
  CHSC74172  Poa compressa B. Castro 1998-7-8 807 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Near edges of meadow. 929 Comment
  UC1594562  Poa cusickii subsp. epilis Lowell Ahart 1992-7-26 6862 Butte ca 2 air mi se Snow Mt (ca 1/4 mi ne of Carr Mine) 1798 Comment
  JEPS94826  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS110239  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
  UCD91615  Poa secunda subsp. secunda A. A. Heller 1915-6-10 11956 Butte Little Summit in the Sierra Nevada. 1432 Comment
  CHSC25040  Pogogyne zizyphoroides P. E. Reese 1972-4-29 10 Butte Found ca. 50 ft. from Hwy. 99 at intersection with Boyles Rd. n of Chico. 60 Comment
  UCD125427  Pogogyne zizyphoroides Paula J. Minton 1980-5-14 1 Butte 1 mile east of Chico, around 100 ft on north side of the Skyway. 70 Comment
  CHSC23540  Poinciana gilliesii M. S. Taylor 1975-6-21 778 Butte Ca. 1 mi w of Esplanade on W. 11th Ave, Chico. Comment
  CHSC26716  Polanisia dodecandra subsp. trachysperma M. P. Hayes 1977-10-23 140 Butte Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  JEPS103459  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 Butte Along the 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 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CHSC28569  Polygonum aviculare M. S. Taylor; J. D. Jokerst 1979-11-11 2281 Butte Scattered on edge of ricefield. Ca. 6 mi s of Chico, on w side of Goospeed-Watt Rd. 33 Comment
  CHSC43265  Polygonum aviculare Lowell Ahart 1987-9-24 5893 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC46194  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1912 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  SEINET10904502  Polygonum aviculare Mary Susan Taylor 1979-11-11 Taylor 2281 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CAS-BOT-BC109131  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise. Comment
  CAS-BOT-BC109132  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise. Comment
  CHSC103978  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 Butte On the south side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  JEPS104284  Polygonum bidwelliae Lowell Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10217 Butte Rifle and Trap Range, NE of Horseshoe Lake, N of Parking Area E, Upper Bidwell Park, about 1 1/2 mi E of Manzanita Avenue, Chico 106 Comment
  JEPS98376  Polygonum bolanderi Lowell Ahart 2000-9-27 8694 Butte 13 air miles NE of Oroville (N side of Bean Creek Rd, 1/4 mi SE of Little Bald Rock, 1 1/4 air miles NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CHSC104852  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 393 Comment
  CHSC71187  Polygonum californicum Lowell Ahart 1998-6-9 7982 Butte On dry dark rocky bare basalt, west of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS50604  Polygonum californicum Dr. C. C. Parry Nov. 1881 Butte Chico Comment
  CHSC39082  Polygonum douglasii subsp. spergulariiforme R. A. Schlising 1979-9-6 3486 Butte Above Butte Meadows, along Humboldt Road, 1.5 mi S of Lassen National Forest and 1.1 mi N of road to Stirling City; in ditches at roadside. Comment
  UC1509659  Polygonum hydropiper L. Ahart 1982-10-11 3864 Butte large duckpond ca 1/10 mi w Graylodge Wildlife Refuge (ca 12 mi sw of Gridley) 35 Comment
  RSA795242  Polygonum lapathifolium L. Ahart 2011-8-17 17628 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 0.75 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  CHSC24813  Polygonum persicaria E. L. Rilla 1976-9-18 31 Butte .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  CDA13840  Polygonum punctatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13568 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  UC466037  Polygonum sawatchense subsp. sawatchense Mrs. R. M. Austin Apr. 1896 148 Butte grain fields Comment
  SEINET10479784  Polygonum scabrum Mary Susan Taylor 1978-7-22 Taylor 1852 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CAS-BOT-BC71863  Polypodium californicum Lowell Ahart 1981-3-29 2716 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  SEINET10530417  Polypodium glycyrrhiza Mary Susan Taylor 1981-3-24 Taylor 3433 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC113205  Polypogon interruptus Lowell Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC90920  Polypogon interruptus Lowell Ahart 2005-4-18 11743 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
  RSA754944  Polypogon interruptus L. Ahart 2008-5-12 14741 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 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
  SEINET10508324  Polypogon interruptus Lowell Ahart 1983-6-15 Ahart 4057 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  SEINET11665627  Polypogon interruptus Unknown 1983-1 4110 Butte ca 0.12 mi E of int of Oroville Quincy Hwy & Ponderosa Way, ca 15 mi NE of Oroville along Ponderosa 500 Comment
  CHSC47634  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte In the gutter along Lower Forbestown Road or Ponderosa Way, about 1/4 mile north of the intersection of Forbestown Road and Robinson Mill Road. 701 Comment
  SEINET10530106  Polystichum Mary Susan Taylor 1980-4-1 Taylor 2420 A Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CHSC37828  Polystichum imbricans R. A. Schlising 1980-6-10 3679 Butte NW part of county along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1341 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
  CHSC96906  Polystichum munitum Lowell Ahart 2007-6-12 14065 Butte About 70 yards northeast of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 1001 Comment
  SEINET10539205  Populus trichocarpa Mary Susan Taylor 1975-8-31 Taylor 896 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  RSA699698  Potamogeton diversifolius Lowell Ahart 2004-7-11 11226 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  CHSC46982  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-28 4022 Butte Richardson Springs in the foothills ne of Chico. In a pool in the bed of the East Branch of Mud Creek just above the falls. 213 Comment
  CAS-BOT-BC453686  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC80726  Potamogeton illinoensis Lowell Ahart 2001-6-3 8750 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  JEPS102423  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  JEPS98974  Potamogeton illinoensis Lowell Ahart 2001-7-6 8882 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ord Bend, about 12 miles (air) SW of Chico. 32 Comment
  CHSC45740  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-19 2224 Butte Along Sly Cr at crossing of rd to SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. Cyn bottom near the cr. 1097 Comment
  CHSC75531  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. [Lat./Long. on label is '39 51 N, 121 34 W']. 710 Comment
  SEINET10483126  Potentilla glandulosa subsp. reflexa Mary Susan Taylor 1980-5-27 Taylor 2648 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
  CHSC69050  Potentilla gracilis var. fastigiata Lowell Ahart 1997-8-3 7773 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CAS-BOT-BC539447  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC29397  Poterium sanguisorba R. A. Schlising; R. Banchero 1980-6-17 3738 Butte N of Magalia, along Coutelenc Road, 0.7 mi S of jct with Skyway at Lovelock. In meadow. 902 Comment
  CDA6517  Proboscidea louisianica T. C. Fuller, W. T. Parsons 1960-7-25 4865 Butte Highway 99E, ca. 9 miles northwest of Chico. 0 Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 Comment
  SFV5828  Prunella vulgaris var. lanceolata M. L. Vincent 1968-6-5 773 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC92554  Prunus avium L. P. Janeway; C. Christofferson, M. Brown, S. Mackey Hillaire 2005-4-19 8363 Butte Northern High Sierra Nevada. Plumas National Forest; in small upper drainage of Flea Valley Creek, about 560 m east-northeast of junction of Concow Road and Rim Road (Ponderosa Way). 841 Comment
  CHSC11998  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek. 1650 Comment
  CHSC5987  Prunus laurocerasus M. MacArthur 1968-6-12 138 Butte Along SW wall of PSA building, near NW end, Chico State College campus, Chico. 60 Comment
  JEPS108573  Prunus subcordata L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8362 Butte High Cascade Range. Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake 777 Comment
  CHSC48869  Prunus virginiana var. demissa Vernon Oswald 1987-4-20 2336 Butte Butte Creek Reserve on the s side of the creek ne of the Skyway. On slope bordering the s edge of the Reserve. 91 Comment
  CHSC28977  Pseudobahia heermannii R. A. Schlising 1980-3-17 3515 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  JEPS121888  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, about 11 miles (air) northeast of Oroville. Comment
  UC1609324  Pseudognaphalium californicum Lowell Ahart 1993-7-31 7147 Butte just s Lake Concow (along w edge of Concow Rd) 640 Comment
  CHSC66288  Pseudognaphalium stramineum Lowell Ahart 1996-5-9 7679 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC357588  Pseudognaphalium stramineum Lowell Ahart 1983-7-29 4226 Butte About 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC27794  Psilocarphus brevissimus var. brevissimus K. Bridwell 1978-4-18 97 Butte Ditch along roadside of Broyles Rd, ca. 0.25 mi w of intersection of Broyles Rd and Hwy 99, ca. 12 mi n of Chico. 76 Comment
  CHSC34411  Psilocarphus brevissimus var. brevissimus R. M. Winchell 1980-4-23 1 Butte N of Chico, between Singer Creek and Cana-Pina Creek Road. 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
  SEINET10475180  Psilocarphus oregonus Mary Susan Taylor 1979-5-6 Taylor 2003 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  JEPS87528  Psilocarphus tenellus Lowell Ahart 1993-7-6 7049 Butte about 1/4 mi w Lost Creek Reservoir (s side of dirt rd) 1036 Comment
  JEPS117508  Psilocarphus tenellus var. globiferus Lowell Ahart 2010-5-22 16722 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 387 Comment
  CHSC39535  Psilocarphus tenellus var. tenellus Lowell Ahart 1983-6-12 4042 Butte Along the edge of the road and near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  JEPS119981  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC109313  Ptelea crenulata R. M. Austin May 1883 263 Butte Comment
  CAS-BOT-BC148607  Ptelea crenulata Mrs. Brandegee 189- s.n. Butte Marysville Comment
  CAS-BOT-BC72550  Pteridium aquilinum T. P. Spira 1974-4-28 7 Butte along Contolene Rd, ca. 2 mi e of Paradise 609 Comment
  CHSC29096  Pteridium aquilinum var. pubescens M. S. Taylor; J. D. Jokerst 1980-4-27 2549 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC48672  Pterospora andromedea Vernon Oswald 1983-7-6 811 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CHSC29709  Pterostegia drymarioides J. D. Jokerst 1980-4-21 626 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC43944  Pterostegia drymarioides Vernon Oswald 1988-4-21 3278 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Common at the base of an outcrop of Tuscan Formation mudflow on the north side of a swale near the north tip of the ranch. 60 Comment
  CHSC31439  Pycnanthemum californicum L. Ahart 1980-7-29 2503 Butte Near a small stream near Forbestown Rd,ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC65568  Pycnanthemum californicum R. Banchero 1980-7-28 316 Butte Humboldt Rd at Butte Ck, 5.3 mi NE of jcn Humboldt Rd and Hwy 32. 1341 Comment
  CHSC74095  Pycnanthemum californicum B. Castro 1998-7-28 813 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt road at E edge of old homestead site. 929 Comment
  CAS-BOT-BC460580  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte NW of the intersection of Black Bart Road and Forbestown Road, about 1 mi. W of Robinson Mill Road 670 Comment
  RSA0080633  Pyrola dentata H. F. Copeland 1928-8-18 1018 Butte Neighborhood of Jonesville. 1524 Comment
  CHSC51872  Pyrola picta L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3140 Butte Ridge SE trending from Snow Mtn. 2103 Comment
  SBBG28971  Pyrola picta E. B. Copeland 1931-7-15 669 Butte Jonesville 1600 Comment
  CAS-BOT-BC466011  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  CAS-BOT-BC466012  Pyrola picta E. B. Copeland 1920-8-2 195 Butte Jonesville 1219 Comment
  SEINET10449210  Pyrola picta subsp. integra Mary Susan Taylor 1977-8-17 Taylor 1483 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC110114  Pyrus calleryana L. P. Janeway 2012-3-6 10791 Butte Sacramento Valley. Southern edge of Chico; fenceline along west side of Hwy 99 just south of Estates Drive. 65 Comment
  JEPS119837  Quercus X morehus Lowell Ahart 2012-3-23 17799 Butte On the south side of the Old Humboldt Road cut, north end of Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  CHSC46974  Quercus chrysolepis var. nana Vernon H. Oswald 1989-8-9 3930 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.8 mi sw of Humboldt Rd, ca. 1.5 mi (air) sw of Butte Meadows. 1310 Comment
  SEINET10447141  Quercus dumosa Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7021 Butte 2/6 miles w of paradise on chico road. 610 Comment
  CAS-BOT-BC79605  Quercus durata Clarence R. Quick 1961-9-21 61 -38 Butte West Branch of N. 7 k. of Feather River 182 Comment
  UC600522  Quercus kelloggii E. B. Copeland 1931-7-27 Butte Jonesville 1600 Comment
  UCD47409  Quercus vacciniifolia J. I. Mallory 1970-8-20 380 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  UC57375  Quercus wislizeni H. E. Brown 1896-10-9 109 Butte near Clear Creek 53 Comment
  SEINET12089318  Ranunculus californicus Unknown 1978-1 4 Butte Small population, ca 900 ft e of Big Chico Creek, ca 1200 ft ne of jct of Humbug and Honey Run Rds 146 Comment
  SEINET12100195  Ranunculus californicus Unknown 3 s.n. Butte no further locality Comment
  JEPS104176  Ranunculus canus Lowell Ahart 2003-5-28 10228 Butte Edges of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  SEINET3450184  Ranunculus canus Unknown 2003-5-28 10228 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  SBBG71846  Ranunculus canus var. canus A. A. Heller 1926-3-31 13916 Butte Nelson, 14 mi S of Chico Comment
  UC204953  Ranunculus hebecarpus A. A. Heller 1914-3-26 11232 Butte Canyon of Big Chico Creek 76 Comment
  HSC72759  Ranunculus hystriculus M. S. Taylor, Timothy B. Devine, M. Merryman 1981-2-11 3382 Butte 50 ft. E of Lumpkin Rd., on N slope of Macabes Creek, 2 mi. N of junction of Lumpkin Rd. and Hwy 162, 13 mi. NE of Oroville 457 Comment
  CAS-BOT-BC74179  Raphanus raphanistrum Lowell Ahart 1980-4-19 2084 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10903218  Rhamnus californica subsp. tomentella Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4100 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC59885  Rhamnus ilicifolia A. A. Heller 1939-5-10 15375 Butte On the Cohasset grade above Rock Creek. Comment
  CHSC102219  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 386 Comment
  SEINET13946369 Image available Rhamnus rubra A. A. Heller 1914-1 11404 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  CHSC1525  Rhamnus tomentella subsp. tomentella A. Goekler 1928-5-25 Butte Bidwell Park. 60 Comment
  CHSC27307  Rhamnus tomentella subsp. tomentella T. B. Devine 1977-5-22 388 Butte N side of Pine Creek under Sycamore. % mi e of Hwy 99. 121 Comment
  CHSC39674  Rhamnus tomentella subsp. tomentella Lowell Ahart 1983-6-21 4100 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville-Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  JEPS103463  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, SW of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  RSA754543  Rhamnus tomentella subsp. tomentella L. Ahart 2009-5-23 15724 Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  UC1093997  Rhamnus tomentella subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia 731 Comment
  CHSC51992  Rhus aromatica L. P. Janeway 1988-4-10 2617 Butte Butte Cyn; grassy slope below Centerville Rd (Humbug Rd) 1.0 mi NE of Honey Run Rd. 115 Comment
  SEINET13942866 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CHSC6050  Robinia pseudoacacia M. MacArthur 1968-6-18 226 Butte S edge of Big Chico Creek next to bridge by PSA bld., Chico State College campus. 60 Comment
  CHSC1216  Romneya coulteri E. Channon 1931-5-19 Butte Planted along Chico creek near Bidwell mansion. 57 Comment
  CHSC90654  Romulea rosea var. australis Rod Lacey 2005-3-28 Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. 54 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
  SEINET10448488  Rorippa curvisiliqua Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4205 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
  CHSC40444  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-5-31 5040 Butte About 15 feet below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville, west of Lumpkin Road, north-east of Oroville. 274 Comment
  JEPS121305  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-29 19291 Butte Below the high water line of Lake Oroville, about 250 yards W of the old road, about 3.5 air miles NE of Oroville Dam. Comment
  CHSC93974  Rosa bridgesii R. D. Fischer 2004-6-20 755 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off forest floor on the east side, north end, of Chico Meadow and adjacent Scout Road. 1371 Comment
  JEPS108718  Rosa gymnocarpa Lowell Ahart 2006-6-24 12856 Butte 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 1128 Comment
  SEINET10791514  Rostraria cristata Lowell Ahart 1982-4-29 Ahart 3386 Butte Normal size. On dry soil along edge of rd, near check-in station, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley. 35 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
  CHSC96949  Rotala ramosior Lowell Ahart 2007-7-8 14276 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC45811  Rubus armeniacus L. P. Janeway 1987-5-7 2023 Butte Table Mtn Rd where it is at the base of the RR fill and overlooking Thermalito Forebay. 91 Comment
  SEINET10483860  Rubus armeniacus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4716 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC156609  Rubus bifrons Javier Penalosa 1962-6-18 2455 Butte Near confluence of French and Peavine Creeks 609 Comment
  UC203608  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte borders Chico meadows 1219 Comment
  SEINET10483569  Rubus glaucifolius Mary Susan Taylor 1981-5-5 Taylor 3610 Butte 600 ft. T20N R6E sw sec 2, Forbestown quad. W side of spur rd, ca. 1.5 air mi NW of its jct with Bryant Ravine Rd(21N35Y), ca. 1 air mi N of Feather Falls community. Green grassy woodland with heavy shrub cover, nne-facing slope; 792 Comment
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 Comment
  JEPS115363  Rubus laciniatus Lowell Ahart 2009-7-9 16013 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  CAS-BOT-BC147358  Rubus pensilvanicus John Thomas Howell 1962-6-15 37451 Butte Magalia 731 Comment
  UCD89072  Rubus ursinus Lindsay Clark 2008-6-3 BWP 26 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 92 Comment
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CHSC32114  Rumex acetosella L. Ahart 1977-5-2 1346 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CHSC87558  Rumex acetosella R. D. Fischer 2004-4-11 61 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on eastern hillside above the end of 10 Mile House Road just south of B.C.C.E.R. land. 304 Comment
  JEPS124034  Rumex acetosella Lowell Ahart 2015-7-4 20293 Butte About one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 miles (air) northeast of Feather Falls. Comment
  JEPS119634  Rumex conglomeratus Lowell Ahart 2012-6-14 18184 Butte On the north side of Big Chico Creek, near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC51008  Rumex fueginus Lowell Ahart 1990-8-15 6588 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  SEINET11924819  Rumex stenophyllus Unknown 1982-1 3676 Butte Ca 1/8 mi SE of Headquarters, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley 35 Comment
  CHSC87191  Sagina apetala Lowell Ahart 2004-4-4 10720 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
  JEPS122065  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  UC600587  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte above Jonesville; above Jonesville 1700 Comment
  SEINET260325  Sagittaria greggii C. Wick 1988-6-17 sn Butte S of Grainland Rd W of Agua Fria Rd (Goodspeed Watt) Rd S of Dayton 40 Comment
  CHSC66363  Sagittaria montevidensis subsp. calycina Vernon H. Oswald 1996-6-20 7831 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the S end of Tract 3.4, Sanctuary II. 33 Comment
  CHSC45314  Sagittaria sanfordii Vernon Oswald 1988-10-25 3713 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  CHSC76347  Sagittaria sanfordii B. Castro; B. Hendrickson, L. Janeway, J. Marr, C. Warren 1999-7-8 1000 Butte About 12 air miles N of Chico, 0.5 mi W of Hwy 99 just S of the Butte-Tehama Co line, at the Wurlitzer Unit of the Vina Plains Preserve, at NE edge of farm pond. 57 Comment
  CAS-BOT-BC129948  Salix bonplandiana A. A. Heller 1919-4-12 13103 Butte Cherokee mine in the blue oak and digger pine belt. Comment
  SD928  Salix eastwoodiae E. B. Copeland 1931-6-11 Butte Jonesville; Kirby's Meadow 1750 Comment
  JEPS119529  Salix exigua var. hindsiana Lowell Ahart 2012-4-20 17888 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS119590  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17883 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  SD926  Salix geyeriana E. B. Copeland 1931-6-10 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  CAS-BOT-BC107837  Salix gooddingii C. R. Ball 1916-6-15 2069 Butte On bank of Chico Creek, Chico Comment
  CHSC113364  Salix gooddingii Lowell Ahart 2014-4-9 19347 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC3195  Salix gooddingii Virginia Hagaman 1966-5-3 44 Butte Lower Bidwell Park along entrance road on east side of Highway-overpass. Comment
  RSA28801  Salix gooddingii A. A. Heller 1914-4-6 11262 Butte Chico-Oroville road 12 miles from Chico on the banks of Dry Creek. Comment
  CHSC65019  Salix jepsonii Vernon Oswald 1988-6-20 3410 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  CHSC79567  Salix laevigata G. F. Hrusa; T. D. Wilfred 1997-5-1 13714 Butte Northern California. The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 770 Comment
  SEINET10866289  Salix laevigata Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4295 Butte T19N R4E se/ne sec 3. Oroville quad. Turnout near Bridal Path sign, across Feather River from Spillway, along Oroville Dam Blvd (Alt 40), ca. 2.5 mi w of Oroville Dam Visitors Center. Comment
  LA208811  Salix lasiandra E. B. Copeland; 1931-6-10 619 Butte Jonesville 1500.0 Comment
  CHSC108788  Salix lasiolepis Lowell Ahart 2012-4-9 17830 -A Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC108845  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte On a gravel bar, middle of North Honcut Creek, 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
  CHSC57510  Salix lasiolepis Rebecca L. Hill 1990-4-7 8 Butte E side of the East Branch of Clear Creek, ca. 0.3 mi ne of Clear Creek Cemetary rd., ca. 6 mi s of Paradise off of Clark Rd. 121 Comment
  CHSC65014  Salix lasiolepis Vernon Oswald 1987-4-22 2342 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, NE of Hwy 99. 68 Comment
  SEINET10538856  Salix lasiolepis Mary Susan Taylor 1979-3-19 Taylor 1934 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC9695  Salix lasiolepis var. lasiolepis E. L. Smith 1971-9-12 1067 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  POM107305  Salix prolixa C. C. Bruce 1898-05 2481 Butte Butte Creek. Comment
  UC215467  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte near Cohasset (Sierra foothills); Sierra Comment
  UC883824  Salvia sonomensis A. A. Heller 1915-4-12 11810 Butte near Cohasset (Sierra foothills); Sierra Comment
  CHSC27253  Sambucus mexicana P. Moyer 1972-5-7 195 Butte N bank Chico Ck. By L.S. Bridge. CSUC campus. 60 Comment
  CHSC23533  Sanicula bipinnata M. S. Taylor 1976-3-9 1021 Butte Ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC45733  Sanicula bipinnata J. S. Peterich 1988-3-8 7 Butte On Cohassset rd. ca. 70 m. w. of entrance to Richardson Springs, Chico. 90 Comment
  SEINET10873886  Sanicula bipinnata Mary Susan Taylor 1980-3-1 Taylor 2324 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  SEINET12120600  Sanicula bipinnatifida K. E. Warwick 1978-1 9 Butte ca 5 m S of Pentz Rd at intersection of Pentz Rd & Magalia-Pentz Hwy, ca 18 km N of Oroville Comment
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  RSA754582  Sanicula crassicaulis L. Ahart 2009-4-22 15566 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC42672  Sanicula tuberosa Vernon Oswald 1985-4-3 1696 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC65441  Sanicula tuberosa L. P. Janeway 1995-5-18 4763 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1106 Comment
  CHSC42388  Saponaria officinalis Lowell Ahart 1987-6-9 5725 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC478456  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  SEINET13945271 Image available Scandix pecten-veneris Barbara Ertter, Lowell Ahart & Jeffrey L. Strachan 1980-1 3280 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville & Marysville. T17N R4E SEC 4, NE 1/4, elev ca 100 ft 30 Comment
  POM313089  Schoenoplectus acutus var. occidentalis H. L. Mason, Verne Grant 1946-8-7 12993 Butte Grey Lodge Game Refuge; Gridley Road north of Butte Sink Comment
  NY663861  Schoenoplectus mucronatus L. Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC111833  Schoenoplectus tabernaemontani Lowell Ahart 1987-9-24 5898 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC76308  Schoenoplectus tabernaemontani Lowell Ahart 1999-9-21 8278 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
  CHSC56798  Scirpus congdonii L. P. Janeway; C. A. Janeway 1986-9-13 1894 Butte Wide flat meadow along Humbug Summit Road ca 1 1/2 mi southwest of Humbug Summit. 1859 Comment
  CHSC57151  Scirpus microcarpus L. P. Janeway 1988-7-29 3102 Butte Along Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). 1325 Comment
  SEINET10466961  Scirpus validus Mary Susan Taylor 1977-11-12 Taylor 1539 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC39618  Scleranthus annuus subsp. annuus Lowell Ahart 1983-4-1 3915 Butte Found along the edge of old Highway 40, near the water fountain, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CHSC45757  Scleranthus annuus subsp. annuus L. P. Janeway 1988-5-9 2661 Butte Ridge between hwy 32 and the piece of old rd that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  CHSC98953  Scleranthus annuus subsp. annuus Lowell Ahart 2008-5-12 14743 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC36517  Scutellaria californica L. Ahart 1982-5-28 3439 Butte Near Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  SEINET9360252  Scutellaria californica Unknown 1996-7-9 13168 Butte Soapstone Hill Comment
  CHSC51234  Scutellaria siphocampyloides Lowell Ahart 1977-5-20 1388 Butte Growing on the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  POM69995  Scutellaria tuberosa C. C. Bruce 1897-04 1836 Butte Little Chico. Comment
  CHSC23467  Sedella pumila J. R. Lee 1974-4-22 3 Butte 15 yards n of the Skyway roadside ca. 6 mi se of the Chico city limits. 152 Comment
  CHSC90984  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  JEPS124221  Sedella pumila Lowell Ahart 2015-3-27 19979 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  POM93201  Sedella pumila C. C. Bruce 1897-04 1776 Butte Chico Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  CHSC3427  Sedum spathulifolium Judy Potter 1966-4-17 214 Butte Skyway, 6 miles NE Humbug Road. Comment
  CHSC38407  Sedum spathulifolium Vernon Oswald 1983-4-1 250 Butte Upper Bidwell Park, Chico, beside the South Rim Trail ca. 600 ft w of the power lines. 134 Comment
  HSC85728  Selaginella hansenii L. P. Janeway 1984-10-19 1183 Butte Above the Oro-Quincy Hwy., along E side of Lake Oroville (Feather River) 335 Comment
  CHSC31518  Selaginella wallacei L. Ahart 1973-12-28 292 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41991  Selaginella wallacei Lowell Ahart 1976-4-17 1083 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  SEINET10471204  Selaginella wallacei Lawrence P. Janeway 1984-9-29 Janeway 1176 Butte Brush Creek Quad, T21N R6E NW 1/4 of sec. 35, 1850 feet. Near Feather Falls overlook on Fall River (a tributary to Middle Fork Feather River). "Feather Falls Scenic Area". On N-facing rock faces (granite), partially shaded, with mosses. 565 Comment
  CHSC26844  Senecio aronicoides M. S. Taylor 1978-6-24 1636 Butte On n side of Old Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1371 Comment
  SFV11410  Senecio hydrophiloides M. L. Vincent 1965-4-17 638 Butte 6 miles north of New Feather River bridge (west fork). Comment
  UCD135758  Senecio sylvaticus Robert E. Preston 1988-5-4 590 Butte 6 miles north of Oroville, on Table Mountain. 396 Comment
  JEPS116118  Senecio vulgaris Lowell Ahart, John Dittes 2009-3-20 15502 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  SEINET10904979  Senecio vulgaris Mary Susan Taylor 1973-1 Taylor 41 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC36296  Sericocarpus oregonensis M. S. Taylor 1982-8-16 4986 Butte Just N of old RR crossing over Coutelenc Rd, at its jct with the Skyway, Magalia. 731 Comment
  CHSC73741  Sericocarpus oregonensis B. Castro; L. Hanson 1996-8-22 717 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, near overlook to Seven Falls on short S-trending ridge. 944 Comment
  CHSC45319  Setaria parviflora Vernon Oswald 1988-10-29 3722 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) in se Chico. 68 Comment
  CHSC97657  Setaria parviflora Lowell Ahart 2007-9-30 14501 Butte West bank of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 32 Comment
  CAS-BOT-BC240125  Setaria pumila Lowell Ahart 1987-5-27 5705 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC23130  Setaria pumila M. S. Taylor 1975-10-3 929 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC31627  Setaria pumila L. Ahart 1975-6-23 802 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47639  Setaria pumila Lowell Ahart 1977-8-14 1550 Butte In a slough, Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC51294  Setaria pumila Lowell Ahart 1990-10-21 6638 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  JEPS110304  Setaria viridis Lowell Ahart 2006-9-11 13309 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
  CHSC34225  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70 (Feather River Hwy), ca. 4 air mi NW of Oroville. (center of sec 26). 91 Comment
  RSA449557  Sidalcea Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  RSA702150  Sidalcea calycosa subsp. calycosa R. D. Fischer 2004-6-6 444 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trial and Pine. Comment
  CHSC1042  Sidalcea diploscypha T. Morgue 1932-5-6 Butte Plains north of Chico. 76 Comment
  CHSC34964  Sidalcea diploscypha R. Schlising; P. Minton 1981-5-3 4043 Butte At north border of county. W of Singer Creek and E of Cana/Pine Creek Road. 57 Comment
  UC725669  Sidalcea glaucescens A. A. Heller 1938-7-20 15288 Butte upper end of Snag Lake 1524 Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  CHSC1044  Sidalcea hartwegii J. Baynes 1929-4-21 Butte Paradise. 548 Comment
  CHSC29407  Sidalcea hartwegii R. A. Schlising; R. Banchero 1980-6-2 3615 Butte Along Hwy 32, 6.4 mi S of center of Forest Ranch. Comment
  CHSC95211  Sidalcea hartwegii R. D. Fischer 2004-4-25 807 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected off ridge top along Hwy 32 and the beginning of the Bloodypin Trail. 335 Comment
  UCD80451  Sidalcea malviflora CNPS SN Foothill Team 2005-5-24 SNFN 0172 b Butte City of Chico, Upper Bidwell Park, in the northern 1/4 of the park, on the west side of Big Chico Creek, about 75 m from the canyon rim. 338 Comment
  CHSC34947  Sidalcea oregana subsp. spicata R. Schlising; R. Banchero 1980-8-1 3958 Butte Near east end of Philbrook Lake. 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
  CAS-BOT-BC213186  Sidalcea robusta E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC28789  Sidalcea robusta J. D. Prouty 1979-5-23 7905231 Butte Along the s cliffs of Butte Creek Canyon, 900' n of the Skyway, ca. 4 mi e of Chico. 164 Comment
  CHSC76948  Sidalcea robusta Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  CAS-BOT-BC384466  Silene antirrhina Lowell Ahart 1985-5-31 5032 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CDA30191  Silene antirrhina L. P. Janeway, David Toren, Heather Koeth, Duryea Delacroix 2008-6-11 9406 Butte Northern Sierra Nevada Foothills; Plumas National Forest; along French Creek Road about 3.0 road km northeast of Oroville-Quincy Hwy and 1.0 air km west of Mountain House; slopes east above Mosquito Creek. Old road cutbank. Comment
  CAS-BOT-BC384469  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Along Ponderosa Way 500 Comment
  SEINET10537492  Silene antirrhina Lowell Ahart 1985-5-31 Ahart 5032 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  UC600626  Silene douglasii H. F. Copeland 1932-7-24 Butte Jonesville Butte Creek drainage, Jonesville (near the rim w wall of Butte Creek drainage) Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  CHSC31133  Silene laciniata subsp. californica Herb Allan McLane 1980-4-9 4 Butte 10 ft n of Ponderosa Way, Plumas National Forest. 402 Comment
  CHSC4206  Silene laciniata subsp. californica J. Senter 1967-4-17 24 Butte Located ca. 4 mi. from Horseshoe Lake on north bank off upper Bidwell Rd. 91 Comment
  CHSC44513  Silene lemmonii Lowell Ahart 1988-6-29 6105 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  JEPS98990  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CDA3903  Sinapis alba L. Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. 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
  CHSC116307  Solanum americanum Lowell Ahart 2015-11-7 20631 Butte On the bottom of Grizzly Creek, flowrs into Dark Canyone about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, aobut 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  RSA724846  Solanum americanum L. 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
  RSA724881  Solanum americanum L. Ahart 2006-9-11 13296 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
  SEINET10931472  Solanum americanum Mary Susan Taylor 1979-9-28 Taylor 2195 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC109076  Solanum jasminoides Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17870 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  SEINET10865539  Solanum nodiflorum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4228 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC1936  Solanum parishii J. Gulick 1929-5-27 Butte Paradise. 548 Comment
  NY821150  Solanum parishii A. A. Heller 1902-5-6 5455 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC95297  Solanum physalifolium var. nitidibaccatum Lowell Ahart 2006-10-30 13517 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 31 Comment
  RSA712995  Solanum umbelliferum L. Ahart 2006-5-19 12633 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 406 Comment
  UC600517  Solidago elongata H. F. Copeland 1920-7-12 450 Butte Jonesville Comment
  SEINET10474007  Sonchus asper Mary Susan Taylor 1981-5-14 Taylor 3713 Butte 3200 ft. T21N R6E ne/ne sec 5, Brush Creek quad. S side of 22N49, at jct where creek crosses the rd (next creek E of Little Ram Creek), ca. 1 mi SW of the rds jct with Four Mile Ridge Rd, ca. 0.5 mi N of Mountain House on Oroville-Quincy Hwy. 975 Comment
  CDA32006  Sonchus asper subsp. asper L. Ahart 2009-6-3 15817 Butte About 100 yards west of the table at the old homestead and southwest of 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. Comment
  CHSC46401  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte Near a stream, west of the dirt road, west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  SEINET5319143  Sorghum halepense R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCR219113  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15584 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  SEINET8233923  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC47699  Sparganium emersum subsp. emersum Lowell Ahart 1989-9-21 6399 Butte Along the margins of a apond, on a branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC20120  Spartium junceum M. S. Taylor 1975-4-26 524 Butte Scattered on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  RSA0097920  Spergularia bocconi L. Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards SE of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC112244  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC6001  Spiraea M. MacArthur 1968-6-19 256 Butte SE side of Auditorium bld., Chico State College campus. 60 Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  UCSB63841  Spiraea douglasii Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CHSC94498  Spiranthes porrifolia Lowell Ahart 2006-8-15 13183 Butte Near the center of a large open meadow with bogs, about 70 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
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Sep 6 2011
  CHSC45023  Spondias dulcis L. P. Janeway 1988-9-9 Butte Chico; in hort by K. R. Stern Comment
  CDA2510  Sporobolus indicus L. Ahart 2005-10-22 12462 Butte Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville. Comment
  CHSC43647  Stachys ajugoides var. rigida S. C. Morey 1983-7-23 591 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1124945  Stachys ajugoides var. rigida P. L. Johannsen 1936-7-17 947 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC52207  Stachys stricta L. P. Janeway 1988-6-26 2882 Butte SE rim of Coon Ridge, overlooking Nance Cyn; ca 0.6 mi NE of the power lines (high voltage). S-facing seep at the rim. 182 Comment
  UC1609332  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  CAS-BOT-BC391087  Stellaria longipes subsp. longipes H. F. Copeland 1920-7-8 31 Butte Jonesville 1219 Comment
  RSA0041907  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 490 Butte Jonesville. 1524 Comment
  RSA0041908  Stellaria longipes subsp. longipes E. B. Copeland 1931-1 638 Butte Jonesville. 1500 Comment
  CHSC111720  Stellaria media Lowell Ahart 2012-6-14 18186 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC5999  Stellaria media M. MacArthur 1968-6-17 205 Butte In lawn NW side of LS bld., Chico State College campus. 60 Comment
  JEPS122000  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. Comment
  UC135756  Stellaria media Mrs. R. M. Austin May 1896 293 Butte Chico plains; Chico Comment
  CAS-BOT-BC395118  Stellaria nitens Lowell Ahart 1983-3-28 3907 Butte about 1/2 mile SW of the Forbestown Res., along the road where tere is a serpentine slide area, about 4 miles NE of Forbestown 450 Comment
  CHSC58905  Stellaria umbellata Lowell Ahart 1992-7-21 6816 Butte In a meadow, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC375766  Stephanomeria virgata John Thomas Howell 1959-9-20 34717 Butte Feather River Highway at West Branch bridge Comment
  SEINET10589585  Stipa A. Arthur Heller 1914-6-22 Heller 11501 Butte Chico Meadows 1219 Comment
  CHSC113964  Stipa occidentalis var. californica Lowell Ahart 2014-7-13 19655 Butte About 40 yards south of Philbrook Road, abofrom the large meadow go west to the snow lake, go on about 40 yards to the ridge, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UCD115989  Streptanthus diversifolius Robert E. Preston 1986-4-29 539 Butte 8 km north of Oroville, on North Table Mountain. 396 Comment
  UCD164222  Streptanthus diversifolius N. Ivalu Cacho; Sharon Y. Strauss 2013-4-19 IC-SS 299 Butte Table Mountain. 1177 Comment
  CHSC33221  Streptanthus longisiliquus R. A. Schlising 1981-6-11 4085 a Butte North of Cohasset near county line. 1097 Comment
  UCD78022  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CAS-BOT-BC87441  Streptanthus polygaloides Clarence R. Quick 1964-7-9 64 -54 Butte Sierra Nevada. North of Jarbo Gap. Comment
  CHSC43439  Streptanthus polygaloides Lowell Ahart 1979-6-9 1928 Butte Near the edge of the dirt road that goes to the West Branch of the Feather River, about 1/2 mile east of Magalia/ 640 Comment
  CHSC92732  Streptanthus polygaloides L. P. Janeway 2005-6-26 8431 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  HSC96685  Streptanthus polygaloides L. P. Janeway 2006-5-28 8639 Butte N High Sierra Nevada, W side of Concow Rd., 3.2 mi. NE of upper end of Concow Reservoir 860 Comment
  RSA712799  Streptanthus polygaloides L. P. Janeway 2005-6-26 8431 Butte South-facing slope 0.4 km. south of top of Batchelor Point, 0.6 km. east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  CHSC95073  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2006-5-28 8643 Butte Northern High Sierra Nevada. 0.6 km east of Concow Road, 1.1 km northeast of Rag Dump, 3.8 mi north of Flea Mountain. Northeast edge of +- exposed granite ridge surrounded by mixed conifer forest. 1248 Comment
  SEINET10449572  Styrax officinalis var. californicus Mary Susan Taylor 1976-5-5 Taylor 1122 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC27935  Styrax officinalis var. redivivus M. S. Taylor; J. T. Howell 1976-5-3 1105 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CAS-BOT-BC48063  Styrax redivivus L. P. Janeway 1995-6-20 4806 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the rige, above Road 21N25A. 1143 Comment
  CHSC46865  Subularia aquatica var. americana Vernon Oswald 1989-8-29 3974 Butte Largest of a cluster of three snow lakes located ca. 2 mi (air) e of the peak of Snow Mtn, ca. 3 mi (air) s of Humbug Summit. 1950 Comment
  CHSC47408  Swertia albicaulis var. nitida Lowell Ahart 1979-5-29 1902 Butte Along the edges of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  SD4985  Symphoricarpos acutus E. B. Copeland 1930-7-7 Butte Jonesville. 1600 Comment
  CHSC27722  Symphyotrichum bracteolatum Robert A. Schlising 1978-10-10 3342 Butte Highway 70, Feather River Canyon, just south of Arch Rock Tunnel at P.G. and E. Roadside Rest area. Comment
  CHSC94578  Symphyotrichum bracteolatum Lowell Ahart 2006-9-9 13246 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
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