Search Results — 2000 specimen records retrieved (1617 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  POM220653  Abies magnifica H. F. Copeland 1928-8-29 331 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC33590  Acer circinatum M. S. Taylor 1981-5-21 3789 Butte In Mayaro, along creek, ca. 2 mi ne of Pulga on Feather River Hwy 70 487 Comment
  UC725982  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Feather River near Stirling; Feather River near Stirling 975 Comment
  UC426916  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 423 Butte Jonesville Jonesville (on shady side of high ridge) 2100 Comment
  CAS-BOT-BC331606  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  CAS-BOT-BC331611  Acer macrophyllum Lowell Ahart 1982-5-8 3409 Butte Near the Forbestown Res. About 1 mile SW of the Forbestown Res., about 4 miles NE of Forbestown. 800 Comment
  CHSC116971  Acer macrophyllum Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70. 572 Comment
  CHSC20965  Acer macrophyllum M. S. Taylor 1975-9-19 915 Butte Ca. 50 ft e of the Skyway, ca. 1/2 mi n of Magalia. 609 Comment
  CHSC24659  Acer macrophyllum Keith Lickey 1976-4-18 84 Butte NW slope of Big Bend Mt; w of junction of Big Bend Rd and Hwy 70 (old). 396 Comment
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  CHSC6015  Acer rubrum M. MacArthur 1968-6-19 260 Butte ca. 50 ft. SW of Esplanade bridge, on NW edge of Big Chico Creek, Chico State College, Butte Co. 60 Comment
  CDA43099  Acer saccharinum L. P. Janeway 2013-2-25 11084 Butte Sacramento Valley.; North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. Comment
  CHSC110943  Acer saccharinum L. P. Janeway 2013-3-19 11085 Butte Sacramento Valley. North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. 46 Comment
  CHSC5957  Acer saccharinum M. MacArthur 1968-6-17 172 Butte SW side of Big Chico Creek ca. 50 ft. NE of Dining Hall, Chico State College campus. 60 Comment
  CAS-BOT-BC21747  Achillea millefolium Lowell Ahart 1989-5-28 6299 Butte South of Oregon Gulch Road, 335 Comment
  UCD51149  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  JEPS87144  Achnatherum occidentale subsp. occidentale Lowell Ahart 1992-7-29 6875 Butte 3/4 mi nw Lotts Lake (1 mi ne of the Carr Mine) 1798 Comment
  JEPS110267  Achnatherum stillmanii Lowell Ahart 2006-6-24 12852 Butte On the east side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset 1130 Comment
  CHSC28528  Acmispon americanus var. americanus M. S. Taylor 1979-8-4 2171 Butte On Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  CHSC33636  Acmispon americanus var. americanus M. Merryman 1979-9-2 26 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 951 Comment
  UCD103766  Acmispon americanus var. americanus Collector unknown Date unknown 12845 Butte Butte Meadows. Comment
  CHSC96998  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-19 9065 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  CHSC97319  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-26 9073 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  SEINET12765095  Acmispon brachycarpus Lowell Ahart 2014-5-13 19457 Butte Trail starts at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville.; 0 242 Comment
  CHSC6600  Acmispon grandiflorus var. macranthus G. Estrem 1968-4-23 2 Butte Ca. 20 mi e of Oroville on hwy. 70. Ca. 100 yds. s of road on n facing slope. Comment
  CHSC28864  Acmispon parviflorus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 467 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
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Jan 19 2011
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC90393  Acmispon parviflorus Richard A. Nichols 1980-4-19 9 Butte 1 yd above current shoreline of w branch of Lake Oroville, ca. 500 yds n of Lime Saddle Marina boat ramp. 286 Comment
  CHSC108831  Acmispon strigosus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, 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. 35 Comment
  CHSC45537  Aconitum columbianum var. columbianum Kirsten Tarp 1982-7-12 195 Butte N part of county, e of Butte Creek House. In meadow. 1926 Comment
  CHSC52675  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 343 Butte At Feather River on Skyway w of Philbrook Reservoir, by stream. 1524 Comment
  CHSC33664  Aconogonon davisiae R. A. Schlising 1981-7-21 4165 Butte NE part of county, just n of Snow Mountain ridge. 1981 Comment
  CHSC41299  Adenocaulon bicolor S. C. Morey 1983-7-22 552 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  UC426978  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC48839  Adenostoma fasciculatum Vernon Oswald 1986-5-6 1994 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CHSC39780  Adiantum jordanii R. O. Gilpatrick 1970-2-23 4 Butte Found 0.2 miles W. from paved road, lower dirt road 1 mile on Centennial Road from bridge, Chico. Comment
  CHSC90135  Adiantum jordanii Greg Johansen 1983-4-16 1 Butte About 200 yds south of Butte Creek and 200 yds southeast of the Covered Bridge, 6 mi east-southeast of Chico. 274 Comment
  JEPS107524  Aegilops cylindrica Lowell Ahart 2005-7-12 12142 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39). about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  HSC102685  Aegilops neglecta J. P. Smith 2013-5-5 13699 Butte Near the boat ramp area north of Grand Avenue at the Thermalito Forebay Recreation Area South. 67 Comment
  JEPS97429  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte 7 mi N of Oroville (North Table Mountain, dirt road, S of Beatson Hollow, about 1/8 mi N of Cherokee Road) 335 Comment
  CAS-BOT-BC202595  Aesculus californica Lowell Ahart 1979-6-2 s.n. Butte On N. Honcut Creek bank. Peter Ahart Ranch. Honcut 50 Comment
  SEINET12236158  Aesculus californica Unknown 1978-1 18 Butte Cherokee quadrangle, Upper Miocene Canal 448 Comment
  CAS-BOT-BC13345  Agoseris retrorsa Lowell Ahart 1987-5-9 5603 Butte Along Pulga Road about 2 mi SW of Bardees Bar along the North Fork of the Feather River, about 4.5 mi SW of Pulga 365 Comment
  CHSC33795  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of Spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 Comment
  CHSC87805  Agoseris retrorsa Paul Maslin 2004-4-21 23 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611440E 4411034N. 533 Comment
  CAS-BOT-BC447798  Agrimonia gryposepala Sally Bianco 1995-8-30 1023 Butte NE margin of Concow Lake near Hoffman Rd. off Concow Rd. Peninsuka between creek and lake 670 Comment
  CAS-BOT-BC127373  Agrostis exarata Lowell Ahart 1988-7-24 6127 Butte At the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC113411  Agrostis exarata Lowell Ahart 2014-7-10 19640 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC31729  Agrostis exarata L. Ahart 1977-6-16 1422 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC64250  Agrostis exarata S. C. Morey 1983-8-3 694 Butte Chico Meadows. On the e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10789990  Agrostis exarata Lowell Ahart 1988-7-31 Ahart 6152 Butte Spike Bentgrass. On damp soil, around stream rounded boulders, on the east side of West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City, Butte County, California. 914 Comment
  UC1564752  Agrostis idahoensis V. Oswald and L. Ahart 1989-8-15 3944 Butte Soda Ridge Road 1.4 mi w of its junction with Coon Hollow Road (ca 1.2 mi (air) n of Philbrook Reservoir) 1752 Comment
  CHSC8192  Agrostis microphylla D. McClain 1969-4-18 63 Butte 500 yds. N. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its juction with Feather River Highway. 487 Comment
  JEPS94298  Agrostis pallens Lowell Ahart 1997-8-1 7772 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, on e side of Little Kimshew Creek, Snow Meadow); Snow Meadow, Little Kimshew Creek 1524 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
  JEPS110399  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  SEINET10901958  Agrostis scabra Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4220 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
  CHSC46604  Agrostis stolonifera V. Oswald; L. Ahart 1989-7-12 3845 Butte Road between Bald Mtn Lookout and Jones Meadow, ca. 2.3 mi (air) nne of the lookout. 1828 Comment
  UC1564805  Agrostis stolonifera V. Oswald and L. Ahart 1989-7-12 3845 Butte ca 2.3 mi (air) nne Bald Mtn. Lookout (road between Bald Mtn Lookout and Jones Meadow) 1828 Comment
  CAS-BOT-BC138577  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit east of Jonesville. 2133 Comment
  CAS-BOT-BC138424  Aira caryophyllea Lowell Ahart 1980-4-13 2078 Butte Peter Ahart Ranch, Honcut. 50 Comment
  HSC39885  Aira caryophyllea J. P. Smith 1973-3-22 5925 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC33668  Alisma lanceolatum L. Ahart 1981-5-25 2837 Butte In a depression along side of rice field, along Central House Rd, ca. 1 1/4 mi nw of Honcut. 35 Comment
  SEINET3449085  Alisma lanceolatum Unknown 2003-6-23 10303 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
  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
  UCD137971  Alisma triviale E. M. Johnston 1915-1 W 144 J Butte Biggs Comment
  CAS-BOT-BC131914  Allium Lowell Ahart 1978-5-16 s.n. Butte North Honcut Creek Comment
  CHSC40626  Allium amplectens J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1960 Butte N of Kunkle Reservoir ca 200 m sw of Lago Vista Rd. Comment
  UC1299745  Allium amplectens Freed W. Hoffman 1949-5-14 2805 Butte nw Oroville (summit of Table Mountain); Table Mountain Comment
  UC1339532  Allium amplectens S. W. Hutchinson 1933-4-28 5575 Butte near Chico 58 Comment
  POM110214  Allium amplectens C. C. Bruce 1897-05 1899 Butte [No locality information provided] Comment
  RSA4217  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Butte County: Jonesville, alt 1500m. 1500 Comment
  CAS-BOT-BC465439  Allium campanulatum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC3868  Allium cratericola Gary Dutton 1966-3-28 152 Butte Found at Table Top. Comment
  JEPS49152  Allium hyalinum Robert Ornduff 1967-4-15 6942 Butte s Table Mountain (field at junction of Cherokee road and Chico-Oroville road) 82 Comment
  CHSC111024  Allium jepsonii Susan Bazell; Robert Schlising 2009-7-7 69 Butte Serpentine outcrop downslope and E of Hollywood Road, just outside boundary of Lassen National Forest. 731 Comment
  CHSC62600  Allium jepsonii B. Castro 1993-7-13 487 Butte Ca. 2.5 mi SSW of Big Bar Mtn, on gentle SSE-facing slope on the N side of USFS rd 22N84. 944 Comment
  CHSC29721  Allium membranaceum J. D. Jokerst 1980-4-17 586 Butte Top of North Table Mt. Northern tip. 472 Comment
  POM252945  Allium membranaceum A. A. Heller 1938-5-28 15113 Butte On wooded slope in leaf mold on Feather River Highway 22 miles from Oroville. 610 Comment
  UC843376  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CAS-BOT-BC472966  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  CHSC46418  Allium peninsulare Lowell Ahart 1989-5-10 6210 Butte About 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC59362  Allium peninsulare J. L. Guardino 1992-4-18 15 Butte Southern rim of Chico Creek Canyon, 1.7 mi e of Oak Hollow Ln. 268 Comment
  CAS-BOT-BC475439  Allium serra S. P. Rixford 1918-5-1 s.n. Butte Chico Comment
  SEINET12329560  Allophyllum divaricatum Unknown 1984-1 4664 Butte at the Ponderosa Dam, ca 2 mi NW of Forbestown, Yello Pine Forest 370 Comment
  CHSC35101  Allophyllum integrifolium R. A. Schlising; R. Banchero, M. Merryman, J. Fuller 1981-6-20 4096 Butte About 10 miles E of Inskip, NE of Jones Meadows. Bank and roadside. 1877 Comment
  CAS-BOT-BC171270  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  CHSC46477  Alnus rhombifolia Lowell Ahart 1977-11-21 1226 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  CHSC42219  Alopecurus carolinianus John E. Hunter 1986-3-30 41 Butte Ca. 1 km e of Chico, 50 m s Hwy. 32. 75 Comment
  CHSC98807  Alopecurus carolinianus Lowell Ahart 2008-5-2 14704 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 217 Comment
  CAS-BOT-BC137941  Alopecurus saccatus Lowell Ahart 1983-5-12 3978 Butte Sierra Nevada. About 0.5 mile northeast of Highway 99 and Pentz Road. 65 Comment
  CHSC116741  Alopecurus saccatus Lowell Ahart 2016-5-17 10837 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC78220  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  RSA206796  Alopecurus saccatus A. A. Heller 1902-5-3 5445 Butte Near Nelson Comment
  CHSC40899  Amaranthus albus Lowell Ahart 1985-11-7 5228 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. 286 Comment
  CHSC54559  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte Gray Lodge Waterfowl Management Area, south-west of Gridley, about 1/2 mile south-east of the intersection of Pennington Road and Rutherford Road. 21 Comment
  CHSC31525  Amaranthus retroflexus L. Ahart 1977-11-20 1585 Butte On dry soil near our garden. Peter Ahart Ranch, Honcut. 50 Comment
  CDA6727  Ambrosia artemisiifolia L. Ahart, Vernon Oswald 1999-10-3 8296 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC100492  Ambrosia psilostachya Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  UC179502  Ambrosia psilostachya A. A. Heller 1914-9-3 11759 Butte 6 mi from, on the Chico-Hamilton road Chico Comment
  JEPS118411  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  JEPS87512  Amsinckia eastwoodiae David E. Young 1983-3-20 5 Butte 4 km e of Chico (23 m w of Humbolt Rd, .8 km n of Little Chico Creek, ne corner of nw corner of Sect. 29) 99 Comment
  CHSC2811  Amsinckia intermedia David Prall 1965-3-14 3 Butte Along side of Neal Rd. 1 mile east of Highway 99E. 106 Comment
  CHSC31578  Amsinckia intermedia L. Ahart 1975-4-6 741 Butte On dredger piles along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33136  Amsinckia intermedia J. D. Jokerst 1980-4-17 592 Butte Top of North Table Mt at its northern most tip. 472 Comment
  CHSC3876  Amsinckia intermedia Susan Carrauthers 1966-3-14 63 Butte Ca. 4 mi N.W. of city of Chico on Highway 32 next to Lindo Channel. Comment
  CHSC76935  Amsinckia intermedia Ida Ryan 1893-3-1 Butte Rancho Chico. Comment
  JEPS107293  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  JEPS108850  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east 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
  UC727048  Amsinckia lycopsoides A. A. Heller 1941-4-19 16067 Butte n side of Sandy Gulch, Lindo Channel (along roadside edge of a field on the road to Bidwell Park) Comment
  CHSC44475  Amsinckia menziesii var. menziesii Lowell Ahart 1988-5-13 5999 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS115329  Anagallis arvensis Lowell Ahart 2009-4-22 15593 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS93817  Anagallis arvensis Lowell Ahart 1998-6-30 8011 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); North Table Mountain, Cherokee Road 403 Comment
  SEINET10940260  Anagallis arvensis Mary Susan Taylor 1982-4-28 Taylor 4362 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  UC907552  Andropogon glomeratus var. pumilus C. B. Huffaker 1947-9-23 Butte near Oroville Comment
  CHSC72745  Andropogon virginicus var. virginicus Lowell Ahart 1998-11-11 8065 Butte About 3/4 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC50558  Anemone drummondii Vernon Oswald; Lowell Ahart 1990-6-20 4307 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1993 Comment
  CHSC28501  Angelica breweri M. S. Taylor 1979-7-21 2154 Butte Scattered along trail below Humboldt Peak, on Humboldt Summit. 1981 Comment
  HSC72954  Angelica breweri M. S. Taylor 1980-9-12 3335 Butte W side of Hwy 32, 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station 976 Comment
  HSC71487  Angelica californica J. M. DiTomaso 1980-8-28 1952 Butte 2 mi W of Paradise on Honey Run Rd. 457 Comment
  CHSC86584  Anisocarpus madioides L. P. Janeway; John Hunt 2003-6-13 7828 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 515 m west-northwest of the north end of Enterprise Bridge. 277 Comment
  CHSC24808  Anthemis cotula E. L. Rilla 1976-9-18 30 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
  CHSC38729  Anthriscus caucalis Vernon Oswald 1983-4-9 304 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 274 Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. 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
  CHSC99491  Antirrhinum leptaleum Lowell Ahart 2008-7-23 15155 Butte East side of Lumpkin Road, about 200 yards north of the intersection of Forbestown Road and Lumpkin Road, about 10 miles (air) north of Oroville. 513 Comment
  CHSC28779  Antirrhinum vexillo-calyculatum subsp. intermedium J. D. Jokerst 1979-9-2 335 Butte Humbug Road, 2.0 mi. N. of Centerville Cemetary. 457 Comment
  CHSC78166  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC97399  Antirrhinum vexillo-calyculatum subsp. intermedium Robert Fischer 2006-6-27 1005 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in 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. 286 Comment
  CHSC115363  Aphyllon purpureum Lowell Ahart 2015-3-14 19955 Butte On steep basalt slope, on the south side Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 302 Comment
  CHSC38576  Aphyllon purpureum Vernon Oswald 1983-3-16 191 Butte Upper Bidwell Park, Chico, ca. 100 ft n of South Rim Trail and 1000 ft w of the power lines. 128 Comment
  CHSC103  Apocynum androsaemifolium 1931-6-3 Butte Forest Ranch. 609 Comment
  CHSC20487  Apocynum androsaemifolium M. S. Taylor 1975-6-30 812 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CAS-BOT-BC392115  Aquilegia formosa H. F. Copeland 1920-8-29 149 Butte Jonesville 1219 Comment
  CHSC52458  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 225 Butte E. of Powellton. 1402 Comment
  CHSC52687  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 362 Butte NE part of county N of Philbrook Resevoir at Coon Hollow. 1706 Comment
  CHSC50022  Arabidopsis thaliana Lowell Ahart 1990-3-9 6411 Butte Borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  SEINET10448430  Arabis sparsiflora var. subvillosa Mary Susan Taylor 1981-3-24 Taylor 3437 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
  SEINET10873873  Aralia californica Mary Susan Taylor 1977-7-15 Taylor 1421 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  JEPS124173  Arbutus menziesii Lowell Ahart 2015-3-14 19948 Butte Beastson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC27214  Arbutus unedo P. Moyer 1972-4-9 156 Butte NE corner of library. 60 Comment
  CHSC33970  Arceuthobium abietinum M. S. Taylor; L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC4574  Arceuthobium occidentale C. Glascock 1965-1-27 194 Butte Foothills 2 mi. e of Oroville on Oro-Quincy Hwy. ca. 30 ft. downhill from midpoint of driveway at 2723 Oro-Quincy Hwy., Oroville. 38 Comment
  RSA632996  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27451 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA632998  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27476 Butte Cohasset. 630 Comment
  UCD51932  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51113 Butte Skyway and Montana Drive, Paradise, Butte County.Transition Zone. 609 Comment
  CAS-BOT-BC38826  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC38865  Arctostaphylos manzanita subsp. manzanita Frances Brown 1935-2-11 s.n. Butte Durham Comment
  CHSC31916  Arctostaphylos manzanita subsp. manzanita M. S. Taylor; E. Pierce 1981-1-29 3374 Butte Cohasset Ridge SW of Cohasset Hwy, ca. 1 mi S of Cohasset. 60 Comment
  POM210201  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 s.n. Butte Humboldt Grade, about 12 miles from Chico. Comment
  RSA31999  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  SD49843  Arctostaphylos mewukka A. E. Wieslander 1933-6-24 329 Butte Chico quadrangle, 1 mi. E of Paradise on Pearson Road 519 Comment
  UC1094001  Arctostaphylos mewukka Lewis S. Rose 1955-6-15 55103 Butte 6 mi se Paradise (on Pentz Rd) 426 Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 air mi W of Elks Retreat. 1310 Comment
  CHSC41204  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-6-4 2042 Butte E of Camp Creek ca 400 meters. Canyon of the North Fork Feather River. 975 Comment
  SBBG50284  Arctostaphylos mewukka subsp. truei G. L. Smith 1975-4-9 Butte Magalia Comment
  CHSC48372  Arctostaphylos nevadensis Vernon Oswald 1983-8-17 994 Butte On Humboldt Peak, NE of Jonesville. 2158 Comment
  SD3565  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 Butte Above Jonesville 2050 Comment
  POM209917  Arctostaphylos patula H. F. Copeland 1932-6-29 A- 7 Butte The Summit, Jonesville. Comment
  SD49827  Arctostaphylos patula C. G. Albertus 1933-7-25 47 Butte Chico Quadrangle, just S of Thompson's 1280 Comment
  SEINET10973497  Arctostaphylos patula Mary Susan Taylor 1974-5-20 Taylor 255 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  HSC72757  Arctostaphylos viscida M. S. Taylor, Timothy B. Devine, M Merryman 1981-2-11 3376 Butte E side of Lumpkin Rd., ca. 300 ft. N of Macabes Creek, ca. 2 mi. N of jct. of Lumpkin Rd. and Hwy. 162, ca. 13 mi. NE of Oroville 457 Comment
  SEINET10449338  Arctostaphylos viscida Mary Susan Taylor 1981-3-18 Taylor 3424 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
  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
  JEPS98293  Aristida dichotoma Lowell Ahart 2000-6-27 8519 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC400421  Aristolochia californica Mrs. C. C. Bruce 1897-3-1 1794 Butte Little Chico Comment
  HSC85969  Aristolochia californica J. Hunter 1986-2-27 16 Butte 2 km E Chico, 15 m S Chico Creek 70 Comment
  CAS-BOT-BC295839  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte Summit above Jonesville 2133 Comment
  UC832875  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte summit above Jonesville 2133 Comment
  UCD129211  Arnica longifolia Robert E. Preston 1982-7-21 352 Butte Philbrook Creek, where dirt road crosses creek ca. 0.25 mile east of Philbrook Reservoir. 1688 Comment
  JEPS115156  Artemisia douglasiana Lowell Ahart 2009-11-19 16554 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  UC171429  Artemisia douglasiana A. A. Heller 1913-9-12 11135 Butte on Big Chico Creek (Chico) Comment
  SFV11162  Asarum hartwegii M. L. Vincent 1963-6-7 384 A Butte Paradise Dam, 4 miles north of Paradise. 760 Comment
  UC116650  Asarum lemmonii Mrs. R. M. Austin June 1896 153 Butte Lomo Comment
  CHSC62090  Asclepias cordifolia B. Castro 1987-5-21 119 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 451 Comment
  SFV10920  Asclepias cordifolia M. L. Vincent 1963-6-8 405 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  UC878976  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC38245  Aspidotis californica Vernon Oswald 1982-7-23 32 Butte Bidwell Park, Chico, along Yahi Trail w of Brown's Hole. 182 Comment
  CHSC41240  Aspidotis californica J. D. Jokerst 1985-3-17 2158 Butte The first one east of Potters Raive. Ca 1/2 mile south of Box Hall Flat, north of Lake Oroville. Comment
  CHSC25358  Aspidotis densa Marc P. Hayes 1977-4-22 8 Butte Ca. 0.8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 100 m from junction with Hwy 70. 495 Comment
  JEPS113222  Aspidotis densa Lowell Ahart 2007-5-29 13966 Butte On the east side of Bald Rock Dome, Dome Trail at the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) 608 Comment
  SEINET10470239  Aspidotis densa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4736 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
  POM193102  Aster occidentalis var. occidentalis E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1500 Comment
  RSA724823  Aster occidentalis var. occidentalis L. Ahart 2006-9-9 13245 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows 1561 Comment
  CAS-BOT-BC178457  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC40307  Astragalus gambelianus Ahart; Jokerst 1985-5-10 4962 Butte 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC45903  Astragalus gambelianus Lowell Ahart 1981-4-24 2789 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC111344  Astragalus pauperculus Lowell Ahart 2012-5-2 17958 Butte 10 yards south of the fence, about 80 yards northeast of the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 115 Comment
  CHSC42893  Asyneuma prenanthoides L. P. Janeway 1987-6-13 2192 Butte Along Ponderosa Way (Rim Rd) 2.8 mi NE of Jarbo Gap. 883 Comment
  CHSC62099  Asyneuma prenanthoides L. P. Janeway 1993-7-12 4438 Butte Plumas National Forest. About 0.5 mi north of Mountain House; along Rd 22N49 1.2 mi southwest of Fourmile Ridge Road (22N33). 990 Comment
  CAS-BOT-BC68698  Athyrium filix-femina var. californicum J. Pitts 1971-4-16 133 Butte Doc's Place 7.9 mi. up Humbug Rd. from Honeyrun road - 100 yds SE of Road. Comment
  SEINET10532290  Athyrium filix-femina var. californicum Mary Susan Taylor 1981-4-28 Taylor 3569 B Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC12166  Athysanus pusillus Lowell Ahart 1973-3-26 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC12168  Athysanus pusillus Lowell Ahart 1973-3-14 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52804  Atriplex heterosperma Lowell Ahart 1981-11-6 3219 Butte Found on good soil and along the sides of the deep ditch, near the entrance to the Gray Lodge Waterfowl Management HQ, just w of Pennington Rd, ca 12 mi sw of Gridley. 35 Comment
  CHSC61032  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte Gray Lodge Wildlife Management Area W of Gridley, on the W side of a levee road and on the S side of Rutherford Rd. just E of the headquarters complex, ca. 1.75 mi W of Pennington Rd. 19 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  CHSC41558  Avena barbata R. L. Ondricek-Fallscheer 1982-5-26 138 Butte At sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  CHSC4416  Avena fatua J. Francis 1966-5-9 Butte Vacant lot at intersection of Arcadian and Mansion Ave., Chico. Comment
  SEINET263348  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Ca 1/12 miles NW of the West Branch Bridge across Lake Oroville; near the end of the dirt road that leads to Lake Orovil 271 Comment
  CHSC66661  Baccharis douglasii Vernon H. Oswald 1996-7-17 8069 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CDA10378  Baccharis pilularis L. Ahart 2000-11-4 8715 Butte On the east side of Highway 70, about 50 yards south of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. Comment
  JEPS119628  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-6-14 18194 Butte About 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CHSC48971  Bacopa rotundifolia Vernon Oswald 1988-8-8 3683 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  POM38875  Balsamorhiza deltoidea C. C. Bruce 1897-04 1998 Butte [No locality information provided] 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
  CHSC479  Barbarea verna G. Spurlock 1935-5-15 Butte Chico. 57 Comment
  CHSC107120  Bellis perennis L. P. Janeway 2011-6-6 10362 Butte Sacramento Valley. City of Chico; in the lawn between Bidwell Mansion, Modoc Hall (Calif. State Univ., Chico) and Sol-Wil-Le-No Ave. 60 Comment
  CHSC112542  Bergia texana B. Castro 2012-9-28 1985 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (WSW) of its crossing under the Cohasset Hwy bridge. 56 Comment
  CHSC113619  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east of Oroville. 226 Comment
  CHSC110394  Bidens frondosa Lowell Ahart 2012-9-28 18468 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC31576  Bidens frondosa Lowell Ahart 1976-6-27 1145 Butte Along the edge of North Honcut Creek, near Honcut. 45 Comment
  CHSC47653  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC76266  Bidens frondosa Lowell Ahart 1999-9-21 8262 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
  CAS-BOT-BC102075  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte At Dunkle Res., near Paradise 600 Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC44851  Blennosperma nanum Lowell Ahart; John Thomas Howell 1976-4-1 1032 Butte On Table Mountain, about 7 miles north of Oroville. 365 Comment
  CAS-BOT-BC100691  Blennosperma nanum var. nanum Carl B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 1/2 mi. SE. of Butte Creek on Chico - Oroville Road 57 Comment
  CHSC35650  Boechera breweri R. E. Preston 1982-4-7 235 Butte Cape Horn, ca. 4 mi sw of Paradise. On cliff. 335 Comment
  CHSC29740  Boechera breweri subsp. shastaensis J. D. Jokerst 1980-4-17 588 Butte Top of North Table Mt, cliffs at the northern edge. 472 Comment
  CAS-BOT-BC14290  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  POM253281  Boisduvalia densiflora A. A. Heller 1938-5-28 15109 Butte Along the Oroville road near Wick s Corner Comment
  POM253279  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  UC1100857  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  UC1751234  Botrychium montanum Timothy B. Devine 1985-7-7 845 a Butte 2/3 mi NW of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout) 1524 Comment
  CHSC48893  Boykinia occidentalis Vernon Oswald 1985-8-12 1926 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CHSC110143  Brachypodium distachyon L. P. Janeway 2012-5-2 10811 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; southeast-facing slope +-overlooking Bear Hole on Big Chico Creek, between Middle Trail and Upper Trail. 166 Comment
  CHSC113380  Brassica nigra Lowell Ahart 2014-4-9 19336 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC110132  Brassica rapa L. P. Janeway 2012-3-30 10803 Butte Sacramento Valley. West side of Hwy 99 1.6 km south of Estates Drive, south edge of Chico. 60 Comment
  CHSC43959  Brassica rapa Vernon Oswald 1988-6-2 3350 Butte Soda Springs Campground on the e side of Hwy 32 n of Lomo. On the edge of Cascade Creek at the campground. 1139 Comment
  CAS-BOT-BC127677  Brickellia greenei John Thomas Howell 1951-8-19 28159 Butte Serpentine, 2 miles west of Pulga 365 Comment
  CHSC41556  Briza maxima R. L. Ondricek-Fallscheer 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  UCD57149  Briza maxima Beecher Crampton 1965-6-17 7385 Butte 2 miles northeast of Bangor, La Porte Road. Comment
  CHSC2935  Brodiaea californica W. Fitzwater 1958-4-29 Butte On Shasta Hwy. 4 mi. N of Chico. Comment
  SEINET194960  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte In fields near the Chico airport. Comment
  RSA126001  Brodiaea californica E. K. Balls 1957-5-23 22531 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CAS-BOT-BC478966  Brodiaea coronaria subsp. coronaria A. A. Heller 1914-5-8 11382 Butte Clear Creek school house 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
  JEPS122027  Brodiaea minor Lowell Ahart 2014-7-2 19552 Butte About 120 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CAS-BOT-BC484558  Brodiaea minor John Thomas Howell 1967-6-22 42607 Butte Magalia 701 Comment
  RSA256664  Brodiaea minor Dave Knorr 1974-4-20 124 Butte On Pentz Road near intersection with Clark Road. Comment
  SD48511  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte On drying clay and open grassland, U.S. Highway 99, 1.7 miles northwest from junction with road from Pentz. 91 Comment
  CHSC81329  Brodiaea nana J. Trizzino 2001-4-25 56 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  CHSC70820  Brodiaea sierrae B. Castro; H. Durio, L. Gehrung 1995-7-25 593 Butte Ca. 2.5 air mi SSW of Big Bar Mtn, on N side of USFS Rd 22N84. 944 Comment
  UCD78201  Brodiaea sierrae R. E. Preston 2002-6-28 1892 Butte Forbestown. 832 Comment
  CAS-BOT-BC486481  Brodiaea sierrae John Thomas Howell 1951-6-26 27512 Butte Feather River Canyon 213 Comment
  RSA151937  Brodiaea sierrae Rimo C. Bacigalupi, L. R. Heckard, Ruth D. Sanderson, G. Bacigalupi 1952-6-20 3752 Butte Along road from Oroville to Forbestown, 1.2 miles W of Hurleton. 442 Comment
  CHSC82407  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  CHSC42905  Bromus carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC88147  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  JEPS103548  Bromus carinatus var. carinatus Lowell Ahart 2002-6-21 9736 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC27294  Bromus catharticus P. Moyer 1972-4-16 184 Butte CSUC campus. S bank Chico Ck., w of New Dorm Bridge. 60 Comment
  SEINET10514474  Bromus commutatus Lowell Ahart 1989-5-29 Ahart 6316 Butte Along the gravel road to Forbestown Reservoir, about 1 mile NE of Forbestown Road, about 2 1/2 mile NE of Forbestown. 792 Comment
  RSA715574  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley. At the base of the railroad, east side of the railroad tracks, south of the railroad bridge, north of Spruce street. 28 Comment
  CAS-BOT-BC155462  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC4367  Bromus hordeaceus M. Hillier 1966-5-30 Butte In field by ski jump nw of CSC gym. Chico. Comment
  HSC41095  Bromus hordeaceus J. P. Smith, J. O. Sawyer 1973-4-14 6047 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  JEPS115956  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC87913  Bromus laevipes Lowell Ahart 2004-5-27 10958 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC100992  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC75427  Bromus madritensis subsp. rubens Jennifer Slater 1997-4-27 41 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  JEPS106317  Bromus orcuttianus Lowell Ahart 2004-6-22 11123 Butte On the east side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City 713 Comment
  CHSC6724  Bromus sterilis E. Parreno 1968-5-10 588 Butte Upper Bidwell Park at end of pavement. Comment
  CHSC41431  Bromus tectorum Lowell Ahart 1986-5-20 5279 Butte Near the edge of the road that goes to the Forbestown Reservoir, about 1 mile south-west of the Forbestown Reservoir, about 3 1/2 miles north-east of Forbestown. 609 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
  CHSC3559  Calandrinia ciliata R. D. Briggs 1966-3-6 68 Butte Road side, 1/4 mile due west of golf course club house in Bidwell Park, Chico. 91 Comment
  CHSC2396  Calandrinia ciliata var. menziesii R. Carter 1965-3-13 163 Butte Found ca. 7 mi E of Oroville at 6120 W. S. R., on S side of house beside water faucet. 274 Comment
  CHSC78134  Callitriche trochlearis Lowell Ahart 2000-5-21 8380 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  CAS-BOT-BC80354  Calocedrus decurrens John Thomas Howell 1962-6-15 37433 Butte Magalia 731 Comment
  CHSC6640  Calocedrus decurrens M. MacSrthur 1968-6-22 275 Butte NE ep bld. Ca. 30 ft., Chico State College. 60 Comment
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Aug 28 2018
  SEINET11738872  Calocedrus decurrens D. J. Straub 1977-1 17 Butte ca 300 yards SE of Magalia Reservoir & 0.5 mi N of West Branch Feather River 853 Comment
  UC398903  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte above Jonesville 2000 Comment
  CAS-BOT-BC489971  Calochortus leichtlinii A. A. Heller 1915-6-10 11953 Butte Little Summit in the Sierra Nevada, in the yellow pine belt 1371 Comment
  CHSC24840  Calochortus luteus J. T. Moore 1976-4-28 18 Butte 5 m n of Skyway road to Paradise, 8 km e of Hwy 99. 210 Comment
  SEINET12053936  Calochortus luteus D. A. Tillotson 1890-1 s.n. Butte no further locality Comment
  CHSC2240  Calochortus monophyllus M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC67408  Calochortus monophyllus James D. Jokerst; R. A. Schlising 1985-4-8 2214 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  UCD13238  Calochortus superbus Ray 1974-5-17 53 Butte Lake Oroville State Recreation Area, near visitor center in Kelly Ridge area. 152 Comment
  CHSC98583  Calochortus tolmiei L. P. Janeway; B. Castro 2007-5-6 8968 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  CHSC41219  Calycadenia ciliosa J. D. Jokerst 1985-7-18 2514 Butte Top of Cohasset Ridge in community of Cohasset, ca. 200 meters W of Cohasset Hwy. Comment
  CHSC75348  Calycadenia oppositifolia Lowell Ahart 1999-6-12 8091 Butte West of the split in the dams and on both sides of the poor dirt road, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  CHSC87573  Calycadenia oppositifolia R. D. Fischer; Jenny Marr 2004-5-9 143 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between Diversion Dam and Bloody Pin Trail near bluff edge. UTM: 10608190E 4404520N. 192 Comment
  RSA255507  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 miles W of Paradise, south side of Chico-Paradise Hwy Comment
  UCD129784  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  JEPS120621  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  CHSC57128  Calyptridium monospermum L. P. Janeway; R. A. Schlising 1988-7-1 2912 Butte On the northeast-facing flank of Snow Mountain and above Summit Lake. Open ground around logging landing. 2011 Comment
  CHSC45387  Calyptridium umbellatum Vernon Oswald 1984-7-2 1336 Butte Humbug Summit. Growing on forest floor along the road. 2320 Comment
  CHSC33254  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-21 3168 Butte Along Hwy 32, 8.5 miles N of Tehama/Butte County line. Comment
  CHSC46783  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1983-6-9 4423 Butte Along Hwy 32, 7.2 mile N of Nopel Road in Forest Ranch. Comment
  CHSC48299  Calystegia malacophylla Vernon Oswald 1983-8-17 981 Butte Humboldt Summit on Humboldt Road, NE of Jonesville at the junction of Butte, Tehama and Plumas Counties. 1999 Comment
  UC600771  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 339 Butte Jonesville woods Jonesville Comment
  UC2026860  Camellia reticulata Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17805 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SEINET10462919  Campanula prenanthoides Edwin B. Copel 1924-8-2 Copeland 599 Butte JONESVILLE, DRY WOODS 1524 Comment
  CHSC489  Capsella bursa-pastoris M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC57175  Capsella bursa-pastoris Rickelle Syrdahl 1991-4-16 20 Butte Ca. 50 yds sw of jct of Centerville Rd and Honey Run RD, n side of Butte Creek at covered bridge. 152 Comment
  CAS-BOT-BC37063  Capsella bursa-pastoris Lowell Ahart 1980-2-23 2025 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  CHSC3628  Cardamine californica John Francis 1966-2-28 51 Butte Upper Bidwell Park, at end of main road beside creek. Comment
  CHSC60664  Cardamine californica var. californica Vernon H. Oswald 1993-4-12 5258 Butte S wall of Flag Canyon on the NW edge of North Table Mtn., N of Oroville. Along an old track. 341 Comment
  CHSC88857  Cardamine oligosperma Christine Hantelman 2000-2-18 5 Butte Along Meridian road 1/4 mile north of Hwy 99 turnoff. In ditch on north side of road. 57 Comment
  HSC64130  Cardamine oligosperma J. P. Smith 1973-3-22 5922 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  HSC100727  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte E side of Hwy. 99, ~1 mi. S of Gridley. 27 Comment
  CAS-BOT-BC18208  Carex John Thomas Howell 1967-6-22 42605 Butte Sierra Nevada. Magalia. 701 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
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC40269  Carex amplifolia Lowell Ahart 1985-6-30 5077 Butte At a small stream east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC53712  Carex angustata L. P. Janeway; C. A. Janeway 1986-8-31 1814 Butte Near the Picnic Area on the NE side of Philbrook Reservoir. Grassy meadow a little away from the lake. 1691 Comment
  JEPS121995  Carex angustata Lowell Ahart 2014-7-13 19643 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  RSA700399  Carex angustata L. Ahart 2004-8-2 11327 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  CHSC43867  Carex aurea Vernon Oswald 1987-5-2 2363 Butte East side of Little Chico Creek Canyon ca. 1 mi se of Forest Ranch. 609 Comment
  CHSC52269  Carex bolanderi L. P. Janeway 1987-5-20 2086 Butte Canyon of North Fork Feather River; seep along Hwy 70, 0.3 mi N of Arch Rock Tunnel. 472 Comment
  RSA169396  Carex bolanderi L. S. Rose 1963-6-5 63140 Butte North Fork of Feather River, Arch Rock Tunnel. 488 Comment
  CHSC45047  Carex capitata Vernon Oswald 1987-5-11 2386 Butte Chico Meadows ca. 1 mi n of Butte Meadows. 1292 Comment
  SEINET8215214  Carex cyrtostachya Unknown 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles southeast of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CHSC39585  Carex densa Vernon Oswald 1983-6-7 647 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC43950  Carex densa Vernon Oswald 1988-5-19 3322 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  CHSC96835  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS121405  Carex divulsa subsp. divulsa P. F. Zika & L. Janeway 2012-5-17 25873 Butte near Camelia Way bridge, N bank of Big Chico Creek, alluvium over andesite, Chico Comment
  CHSC47061  Carex fracta L. P. Janeway 1989-5-17 3247 Butte Cyn overlook (S Fk Feather River) along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. 693 Comment
  CAS-BOT-BC21239  Carex fracta L. P. Janeway 1988-6-25 2862 Butte The Carices of Butte County. Near Coon Creek and near Bull Hill Road 1.0 mile from Skyway. 1554 Comment
  CHSC100876  Carex geyeri L. P. Janeway; Linus Gog 2008-7-18 9435 Butte High Cascade Range. Along Humbug Summit Road, above the Cornelia Lott Sank memorial Spring (which feeds West Branch Feather River). Comment
  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
  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
  UC1748285  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte along Scotts John Creek 0.2 mi N of the road that connects Humboldt Road and Humbug Road 1749 Comment
  UC600696  Carex hoodii H. F. Copeland 1929-6-10 1247 Butte Jonesville Comment
  CHSC99381  Carex infirminervia Robert F. C. Naczi; Lawrence P. Janeway 2006-7-23 10516 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  SEINET4286076  Carex integra Unknown 2009-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC42842  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Seep like area on the south side of the dirt road, about 1 mile east of Coon Hollow Road, south-east of Snag Lake, about 10 miles north of Inskip. 1737 Comment
  SEINET4286003 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 C Butte Near Cornelia Lott Sank Memorial Spring Comment
  CHSC44935  Carex lemmonii Lowell Ahart 1988-7-31 6145 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
  SEINET7485354 Image available Carex lemmonii Peter F. Zika 2009-1 24519 Butte below Concow Road 11.5 road miles above (N of) Route 70, at Dixie Road, Cascade Range 1210 Comment
  UC532224  Carex lemmonii H. F. Copeland 1930-7-25 1362 Butte Jonesville 1524 Comment
  SEINET7899367 Image available Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville Comment
  CHSC82147  Carex mariposana L. P. Janeway 1987-6-27 2338 Butte Canyon of Little Kimshew Creek, along road 0.9 mi N of the Concow Road. 1508 Comment
  JEPS121961  Carex mariposana Lowell Ahart 2014-7-7 19575 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC32153  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1.5 mi E of Camp 18, ca 8 mi NE of Feather Falls. 1280 Comment
  JEPS120939  Carex multicaulis Lowell Ahart 2013-5-27 18709 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  HSC87068  Carex multicaulis L. P. Janeway, R. A. Schlising, B. Castro 1987-4-4 1969 Butte Paradise Lake, SE shore 686 Comment
  CHSC52260  Carex nebrascensis L. P. Janeway; Patty Costello 1987-9-5 2578 Butte NW side of Big Chico Cr below the road to Soda Springs campground near Hwy 32. 1127 Comment
  CAS-BOT-BC119558  Carex nudata A. A. Heller 1913-6-7 10818 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CHSC33861  Carex nudata J. D. Jokerst; M. S. Taylor, L. Ahart 1980-4-7 560 Butte Rocky Honcut Creek (upper) ca 100 ft. N of it's jct with Sweedes Flat Rd. (E of Rackerby, 10 mi SE of Oroville). Comment
  CHSC52242  Carex nudata L. P. Janeway 1987-5-20 2089 Butte At edge of North Fork Feather River at the Plumas County line. 472 Comment
  CHSC84720  Carex nudata L. P. Janeway 2003-5-11 7783 Butte High Cascade Range. Along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte); just upstream of the diversion structure. 588 Comment
  JEPS120139  Carex nudata Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18010 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC1609337  Carex nudata Lowell Ahart 1993-4-8 6932 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CAS-BOT-BC94041  Carex pendula Peter F. Zika 2010-5-16 24824 Butte shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Ave. and Lone Pine Ave., SW of Chico 45 Comment
  CHSC51429  Carex pendula L. P. Janeway 1989-12-1 3653 Butte Along Comanche Creek (Edgar Slough) behind the office of USFS Tree Improvement Center. 68 Comment
  CHSC31672  Carex praegracilis L. Ahart 1977-6-3 1405 Butte In a small wash, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC77823  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC48558  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3088 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  SEINET4289435 Image available Carex simulata L. Janeway, Gog, L 2008-1 3198 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CAS-BOT-BC116735  Carex subfusca Herbert Faulkner Copeland 1932-7-14 s.n. Butte Jonesville, along ditches and in damp places. Comment
  CAS-BOT-BC116747  Carex subfusca R. Tallent 1987-8-18 956 Butte Lassen National Forest. Along Feather River N of Stirling City. 1036 Comment
  CAS-BOT-BC116743  Carex subfusca L. P. Janeway 1988-6-14 2772 Butte Ewalt Camp, along W branch Butte Cr. 2.0 mi E from Hwy 32 by dirt road. 922 Comment
  CDA33157  Carex subfusca T. C. Fuller 1963-7-12 9187 Butte Butte Creek; road to Jonesville, 2 miles east of Butte Meadow. 0 Comment
  SEINET10912835  Carex subfusca Lawrence P. Janeway, C. A. Janeway 1986-9-13 Janeway 1846 Butte T26N, R5E, Jonesville quad (15') SE 1/4 of sec. 16. Just E of Scotts John Cr. above the Humboldt-to-Humbug road (rd 26N27). 1737 Comment
  CHSC106514  Carex tumulicola Peter F. Zika 2009-6-17 24506 Butte Cascade Range Highlands (CaRH). SE side of Concow Road at south end of Concow Reservoir, 3,7 road miles N of Route 70, by small unnamed creek. 640 Comment
  CAS-BOT-BC115305  Carex utriculata Herbert Faulkner Copeland 1933-7-21 s.n. Butte By Butte Creek not far above Colby, vicinity of Jonesville. Comment
  CHSC66453  Carex vulpinoidea Vernon H. Oswald; Lowell Ahart 1996-6-10 7754 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. A canal at the NE corner of Tract 7.2, Sanctuary I. Common along all this canal, its laterals, and the edges of Tract 6, a permanent pool in Sanctuary I. 33 Comment
  SD257104  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mile north of Skyway Road. 719 Comment
  SEINET10367321  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands, Magalia Serpentine, Coutolenc Rd., 0.1 miles N. of Skyway Rd 720 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
  CHSC34079  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-4-5 3484 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  POM173734  Castilleja applegatei subsp. pinetorum H. F. Copeland 1927-4-2 952 Butte Jonesville. Comment
  UC196055  Castilleja applegatei subsp. pinetorum A. A. Heller 1914-7-23 11646 Butte edge of forest about Chico Meadows 1219 Comment
  CAS-BOT-BC255464  Castilleja applegatei var. pinetorum E. B. Copeland 1930-7-12 466 Butte Jonesville 1550 Comment
  CHSC44129  Castilleja arachnoidea V. Oswald; L. Ahart 1988-7-29 3648 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC65901  Castilleja attenuata Vernon H. Oswald 1996-4-19 7389 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
  JEPS124165  Castilleja attenuata Lowell Ahart 2015-3-27 19970 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  CHSC3657  Castilleja exserta Robert D. Briggs 1966-4-12 R- 117 Butte 3 miles south of downtown Chico. Comment
  CHSC114983  Castilleja lacera Lowell Ahart 2015-4-18 20042 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC24982  Castilleja lacera L. Mayer 1975-5-4 Butte Cohasset Road, ca. 3 mi n of Keefer Road, ca. 3 mi ne of Chico. Comment
  JEPS46017  Castilleja miniata L. R. Heckard 1956-8-6 823 Butte w of Jonesville (along road, near Butte Creek) Comment
  UC492735  Castilleja miniata H. F. Copeland 1930-7-25 Butte Jonesville; meadow below cabin Comment
  UC176080  Castilleja pruinosa A. A. Heller 1913-6-7 10808 Butte near Stirling 1074 Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  SEINET14168216  Castilleja subinclusa B. Nightingale 1961-4-29 52 Butte Near Butte Creek, ca 6 miles E of Chico. 61 Comment
  CHSC77439  Ceanothus cuneatus var. cuneatus Tim Stofer 1997-4-13 11 Butte This bush was located on the west side of the trail 100 ft. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CAS-BOT-BC64445  Ceanothus diversifolius Clarence R. Quick 1964-7-9 64 -72 Butte At head of Concow Creek. 1082 Comment
  CHSC22528  Ceanothus integerrimus Robert A. Schlising 1963-5-4 2556 Butte 1.2 miles south of Paradise along Skyway Road. 396 Comment
  HSC18286  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather River Canyon, Pulga 488 Comment
  JEPS34380  Ceanothus integerrimus Rimo Bacigalupi and L. R. Heckard 1963-5-14 8856 Butte ca 1 mi below and w Paradise (along Honey Run Rd) 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
  CHSC31437  Ceanothus integerrimus var. californicus L. Ahart 1980-9-10 2645 Butte Along edge of rd ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  RSA107427  Ceanothus integerrimus var. puberulus L. S. Rose 1955-6-15 55099 Butte Paradise 518 Comment
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  CAS-BOT-BC52017  Ceanothus prostratus V. Oswald; L. Ahart 1988-7-29 3637 Butte Ca. 5 mi (air) SE of Jonesville on the N edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  RSA34042  Ceanothus prostratus Unspecified 1939-4-10 15371 Butte [Unspecified] Comment
  CHSC6002  Cedrus atlantica M. MacArthur 1968-6-19 246 Butte Front of Administration bld., Chico State College. 60 Comment
  CHSC111741  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wess Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  CHSC31597  Centaurea solstitialis L. Ahart 1977-6-16 1418 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 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
  CHSC66838  Centromadia fitchii Vernon H. Oswald 1996-8-29 8248 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the northwest corner of Tract 5, Sanctuary II. 32 Comment
  CAS-BOT-BC222899  Cephalanthus occidentalis Lowell Ahart 1981-8-11 3027 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC102618  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC10648  Cerastium glomeratum Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD98053  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  SEINET10535923  Ceratophyllum demersum Mary Susan Taylor 1982-5-22 Taylor 4493 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  UC204721  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte e Chico; Canyon of Big Chico Creek 68 Comment
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Feb 17 2016
  SEINET11908937  Cercocarpus betuloides Unknown 1975-1 21 Butte ca 2 mi W of Cohassett, 10 yds S of Cohasset Highway 457 Comment
  SEINET267157  Cercocarpus betuloides var. betuloides T. A. Ranker, PG Trapp 1994-6-17 1624 Butte Pence Road south of Paradise; Cherokee quad. 7.5 min topographic map; along road 395 Comment
  CHSC48842  Chamaebatia foliolosa Vernon Oswald 1985-5-20 1773 Butte Forbestown Rd. 0.3 mi ne of Robinson Mill Rd. 822 Comment
  UC398946  Chamaesaracha nana E. B. Copeland 1929-7-16 396 Butte Jonesville 1550 Comment
  CHSC42957  Chamaesyce maculata Lowell Ahart 1987-7-3 5781 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
  JEPS115645  Chamaesyce maculata Lowell Ahart 2009-8-13 16272 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  RSA754388  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC1563291  Chamaesyce maculata unknown 1990-5-3 6617 Butte 1/4 mi ne Canyon Creek Bridge (accross Lake Oroville below high water line); East Fork of Canyon Creek 259 Comment
  CHSC51260  Chamaesyce nutans Lowell Ahart 1990-9-30 6605 Butte On the north side of Canyon Creek, about 1/8 mile north of the Canyon Creek Bridge across Lake Oroville, below the high water line of Lake Oroville. 228 Comment
  CHSC54866  Chamaesyce nutans Vernon H. Oswald; Lowell Ahart 1991-8-28 4850 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. On the margins of rice fields. 30 Comment
  JEPS105939  Chamaesyce nutans Lowell Ahart 2004-9-14 11403 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  SEINET263347  Chamaesyce nutans V. H. Oswald, L Ahart 1991-8-28 4850 Butte Rice Experiment Station on the south side of Hwy 162 ca. 3.5 mi NNW of Biggs 30 Comment
  JEPS29838  Chamaesyce ocellata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8582 Butte 200 ft e junction of Paradise Rd and rd to Centerville 60 Comment
  CDA34638  Chamaesyce ocellata subsp. ocellata L. Ahart 2009-6-3 15955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC47423  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1974-8-14 603 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  CHSC69678  Chenopodium album Vernon Oswald 1983-7-13 868 Butte Upper Bidwell in Chico, within the enclosure which formerly housed the Hooker Oak. Comment
  SEINET10479005  Chenopodium album Lowell Ahart 1990-9-30 Ahart 6609 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-west of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 244 Comment
  SEINET10479092  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-3 Taylor 933 A Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  UCR188501  Chenopodium missouriense George K. Helmkamp, E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  CDA42948  Chenopodium strictum var. glaucophyllum L. Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. Comment
  CHSC21246  Chenopodium strictum var. glaucophyllum M. S. Taylor 1975-6-21 772 Butte At end of Citrus Ave, in a field, between 11th and 12th Aves, Chico Comment
  UC600607  Chimaphila umbellata E. B. Copeland 1929-7-1 Butte along Butte Creek Jonesville 1550 Comment
  UCD80425  Chlorogalum angustifolium CNPS SN Foothill Team 2005-5-3 SNFN 0197 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  CHSC109165  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CAS-BOT-BC252675  Chorizanthe membranacea C. R. Quick 1951-6-5 51 -88 Butte 13 miles from Chico on Deer Creek Road Comment
  POM193562  Chorizanthe membranacea C. C. Bruce 1896-05 155 Butte Iron Canyon Comment
  SEINET10479751  Chorizanthe membranacea Lowell Ahart 1984-6-8 Ahart 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC111342  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-5-2 17953 Butte In the old fire guard, along the fence, about 50 yards northeast of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 93 Comment
  CHSC97362  Chorizanthe polygonoides var. polygonoides Paul Maslin 2005-5-1 58 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  CHSC103687  Chorizanthe stellulata Lowell Ahart 2010-4-30 16604 Butte Open area along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC88960  Chorizanthe stellulata Christine Hantelman 2000-4-27 84 Butte On western end of vernal pool preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  UC1714463  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte areas about Chico meadow; Sierra 1219 Comment
  SEINET10937984  Chrysopsis breweri Mary Susan Taylor 1979-7-21 Taylor 2165 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  JEPS117264  Cicendia quadrangularis Lowell Ahart 2010-5-14 16645 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west 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. 395 Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. (Note: the sign gives Big Ridge Road instead of Ponderosa Way) 500 Comment
  CHSC8564  Cinnamomum camphora M. MacArthur 1968-6-23 289 Butte Ca. 20 ft. SE Big Chico Creek, just south of PSA bridge, Chico State College. 60 Comment
  CAS-BOT-BC285578  Cirsium occidentale var. candidissimum E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  SEINET10473714  Cirsium vulgare Mary Susan Taylor 1975-8-31 Taylor 878 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
  CHSC24767  Clarkia arcuata P. J. Welch 1976-4-12 16 Butte Ca. 0.65 mi e along Crown Pt. Rd. from intersection with Deer Creek Hwy. (Hwy. 32) and 30 yds n of Crown Pt. Rd.; 10.4 mi ene of Chico. 304 Comment
  HSC43115  Clarkia arcuata Maralyn O'Meara 1974-4-20 295 Butte Table Mtn. 305 Comment
  CHSC99307  Clarkia biloba subsp. brandegeeae Lowell Ahart 2008-5-21 14789 Butte Below the high water line of Lake Oroville, on the steep east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  SEINET10453145  Clarkia biloba subsp. brandegeeae Lowell Ahart, Peter Ahart 1982-6-26 Ahart 4142 Butte T20N R5E nw/nw sec 15. Along Ponderosa Way (Big Ridge Rd), just a little s of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 Comment
  CAS-BOT-BC164524  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-1 63 -47 Butte Jarbo Pass, 6.2 miles northeast Comment
  CHSC39038  Clarkia gracilis subsp. albicaulis Lowell Ahart 1983-6-26 4159 Butte About 17 miles ne of Oroville, along Bean Creek Road, about 5 miles s of Little Bald Rock. 600 Comment
  CHSC88647  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 350 Butte Plumas National Forest. Lunt Road, northeast side. 487 Comment
  LA25999  Clarkia gracilis subsp. albicaulis Carl B. Wolf; 1937-6-12 8783 Butte 2.5 mi. SE of Oroville on road to Wyandotte 91 Comment
  CAS-BOT-BC171879  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-6-12 8783 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC62569  Clarkia gracilis subsp. gracilis L. P. Janeway; Linnea Hanson, Perrie Cobb 1993-5-5 4344 Butte East side of Stringtown Road 0.25 mi north of Hurlton Road. Along the road. 451 Comment
  JEPS94988  Clarkia mildrediae Lowell Ahart 1997-7-11 7743 Butte about 2 air mi sw of Bald Mountain (about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City, on n side of dirt road, se of Cold Creek) 1219 Comment
  CHSC39036  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1983-7-22 4429 Butte E part of county, SE of Brush Creek on Milsap Bar Road, at crossing of Indian Creek; roadside. 853 Comment
  CHSC43217  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1987-6-26 2302 Butte 0.4 mi E of Granite Ridge along road to Lynch and Logue Meadows. Roadcut. 1249 Comment
  CHSC46132  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1984-7-19 4745 Butte Along a logging road, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  LA206077  Clarkia mildrediae subsp. mildrediae Harlan Lewis; M. Lewis, Frank C. Vasek 1950-6-30 756 Butte Hwy 24, 0.05 mi S of Arch Rock on Feather River Comment
  CHSC64112  Clarkia mosquinii L. P. Janeway; B. Castro 1994-7-6 4683 Butte West end of Jackson Ranch Ridge; 0.8 mi east-northeast of the falls of Feather Falls. 1051 Comment
  CHSC70735  Clarkia mosquinii L. P. Janeway 1993-6-15 4386 Butte Southwest side of Ponderosa Dam on South Fork Feather River; along access road about 50 ft west of the dam. North-facing road cutbank. 298 Comment
  POM37804  Clarkia purpurea subsp. purpurea C. C. Bruce 57 Butte Chico Comment
  CHSC46386  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 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
  POM37810  Clarkia purpurea subsp. quadrivulnera C. C. Bruce 1898-05 2413 Butte Forest Ranch Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  UCD21830  Clarkia rhomboidea L. D. Gottlieb 1993-8-27 9320 Butte 1 mile south of Big Bend Rd. on Dark Canyon Road. Comment
  JEPS117242  Clarkia unguiculata Lowell Ahart 2010-6-1 16759 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico 180 Comment
  RSA699522  Clarkia unguiculata R. D. Fischer 2004-4-28 146 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Highway 32. Located on bluff edge of the Disk Golf Course, just east of the northern most bluff projection (a lookout point) 366 Comment
  UC107952  Clarkia unguiculata Mrs. R. M. Austin Apr. 1896 104 Butte Little Chico Comment
  CHSC50556  Claytonia lanceolata Vernon Oswald; Lowell Ahart 1990-6-20 4306 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1920 Comment
  CHSC43721  Claytonia palustris Vernon Oswald 1987-7-29 3163 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 Comment
  CHSC56064  Claytonia palustris L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3148 Butte Along West Branch Feather River, 1.5 mi along Humbug Summit Road north of Philbrook Road. 1584 Comment
  SEINET770612 Image available Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, marshy, sloping stream-fed meadow above south bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. Comment
  SEINET13094404  Claytonia palustris John R. Swanson 1959-1 490 Butte Jonesville, meadow above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel. 1550 Comment
  SEINET10572705  Claytonia parviflora Mary Susan Taylor 1981-3-16 Taylor 3409 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CAS-BOT-BC440032  Claytonia perfoliata subsp. perfoliata Lowell Ahart 1982-5-8 3419 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  CHSC36363  Claytonia rubra subsp. rubra J. D. Jokerst; R. A. Schlising 1982-5-19 1580 Butte Open disturbed soil at Fall River Campground on N side of river and W of road. 1005 Comment
  JEPS114738  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  CHSC41989  Clematis lasiantha Lowell Ahart 1974-8-7 596 Butte Along the dirt road, about 3 miles east of Marble Creek, near Horseshoe, about 20 miles north-east of Oroville. 914 Comment
  JEPS115846  Clematis lasiantha Lowell Ahart 2009-4-22 15589 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CDA36307  Clematis lasiantha J. R. Keck Jr. 1978-5-23 s.n. Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CHSC45417  Clematis ligusticifolia Lowell Ahart 1976-6-24 1144 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CHSC45722  Collinsia heterophylla Phillip Scott 1988-4-18 33 Butte Vic. Chico Municipal Golf Course, ca. 3 mi ne of Chico. 91 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
  UCD123585  Collinsia heterophylla L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC39771  Collinsia sparsiflora Kurt Silberstein 1981-3-24 25 Butte 8 km se of Chico and 8 km nw of Paradise. 125 Comment
  JEPS11919  Collinsia sparsiflora F. W. Pennell 1940-6-5 25679 Butte 2 mi above Oroville (Route 24); Feather River 609 Comment
  RSA589931  Collinsia sparsiflora Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7216 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. N side of Beatson Hollow, 2.1 miles along trail from entrance on Cherokee Rd. Comment
  SEINET10548309  Collinsia sparsiflora var. bruceae Lowell Ahart 1984-4-3 Ahart 4537 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC114963  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. Comment
  JEPS119840  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CDA13301  Collinsia tinctoria G. F. Hrusa, T. D. Wilfred 1996-7-9 13149 Butte Plumas National Forest; E end of USFS N60 approx. 0.4 miles E of Marble Creek Bridge. E of Rogers Cow Camp. Comment
  UC726287  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte on the Feather River Highway 23 mi from Oroville; Feather River Highway Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  CHSC101164  Collomia tinctoria Lowell Ahart 2009-5-15 15716 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
  CHSC43740  Comandra umbellata subsp. californica Vernon Oswald 1984-6-22 1160 Butte Upper Bidwell Park, Chico, on Yahi Trail near Chico Creek w of Brown's Hole. 182 Comment
  CAS-BOT-BC216005  Convolvulus John Thomas Howell 1975-6-15 51114 Butte Skyway near Billie Road, Paradise, Sierra Nevada 609 Comment
  CHSC23369  Convolvulus arvensis Robert A. Schlising 1974-9-4 3156 Butte Roadside along Hwy 32, 4.0 mi NE of junction with Hwy 99 in Chico. Comment
  CHSC32729  Conyza floribunda M. S. Taylor 1981-3-12 3396 Butte S side of 20N53.2 on ridge top, ca. 1 mi sw of Feather Falls community. 883 Comment
  CHSC2332  Corallorhiza maculata K. Chew 1954-5-29 Butte Between Flea Valley and Rag Dump, near Stirling. 1097 Comment
  SEINET10470000  Corallorhiza maculata Mary Susan Taylor 1981-5-27 Taylor 3804 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
  CHSC1742  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  RSA718381  Coronilla varia L. Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. Elevation 3680 (by map) 1113 Comment
  CAS-BOT-BC401853  Corydalis caseana subsp. caseana Marion Ownbey; Gerald B. Ownbey 1946-6-24 2938 Butte At forks of Butte Creek, 1.3 mi. below Jonesville Comment
  UC600688  Corydalis caseana subsp. caseana H. F. Copeland 1927-9-4 758 Butte Jonesville Comment
  CAS-BOT-BC401857  Corydalis caseana subsp. caseana Lowell Ahart 1983-8-16 4301 Butte About 1 mile east of Butte Meadows 1450 Comment
  UCD40400  Corylus cornuta subsp. californica Rodney Gale Myatt 1971-6-13 722 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  SEINET10483826  Cotoneaster pannosus Lowell Ahart 1991-6-19 Ahart 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East, southwest of Oroville Dam. Foothill Woodland. T19N R4E c/s/S2. 213 Comment
  SEINET10473719  Cotula australis Lowell Ahart 1983-4-1 Ahart 3916 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC113201  Crassula aquatica Lowell Ahart 2014-4-16 19364 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC113376  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC33256  Crassula aquatica R. A. Schlising 1980-3-23 3524 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  SEINET10449716  Crassula muscosa Mary Susan Taylor 1980-3-28 Taylor 2403 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  SEINET10449713  Crassula saginoides Lowell Ahart 1984-5-12 Ahart 4604 Butte T17N R4E. Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  CHSC90954  Crassula tillaea Lowell Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  RSA0118771  Crassula tillaea Lowell A. Ahart 2013-4-20 18559 Butte In corral at the barn, about 0.25 mile north of the Honcut Cemetery, about 3.25 miles (air) northeast of Honcut. 48 Comment
  CDA32002  Crataegus laevigata L. Ahart 2009-5-3 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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 Comment
  CHSC33291  Croton setiger S. Posner 1972-9-24 2 Butte Edge of Skyway between Hwy. 99 and Humbug Rd. Comment
  CHSC38437  Croton setiger Vernon Oswald 1983-6-24 758 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  CHSC66367  Crypsis schoenoides Vernon H. Oswald 1996-6-20 7826 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a marsh at the SW corner of Tract 2, Sanctuary II. 33 Comment
  CHSC72254  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte On the bottom of a vernal pool, about 3/4 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
  CHSC97688  Crypsis schoenoides Lowell Ahart 2007-11-3 14557 Butte Along a very small stream, 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
  JEPS115035  Crypsis schoenoides Lowell Ahart 2007-10-31 14514 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  CHSC29959  Cryptantha affinis R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3783 Butte NW part of county, 0.6 mi N of jct Hwy 32 with Humboldt Road, along latter. 1219 Comment
  CHSC33258  Cryptantha affinis R. A. Schlising; R. Banchero 1980-6-17 3729 Butte N of Magalia and De Sabla, along Skyway, ca. 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  CHSC46451  Cryptantha affinis V. Oswald; L. Ahart 1989-6-27 3820 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 2042 Comment
  CHSC58890  Cryptantha affinis Lowell Ahart 1992-7-29 6871 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  UC480663  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte beside So. Willow Creek Jonesville 1828 Comment
  CAS-BOT-BC249066  Cryptantha flaccida George K. Helmkamp; E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC33134  Cryptantha flaccida J. D. Jokerst 1980-5-28 799 Butte Top of North Table Mt, S of Cherokee Rd. Comment
  CHSC39974  Cryptantha flaccida L. Ahart; P. Ahart 1983-6-26 4119 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  UC1177891  Cryptantha flaccida Malcolm A. Nobs 1950-5-13 668 Butte 5.5 mi ne junction of Highways 32 and 99E in Chico 60 Comment
  SEINET12329561  Cryptantha hendersonii Unknown 1984-1 4677 Butte ca 1 mi E of Ponderosa Dam, ca 2 mi N of Forbestown, Yellow Pine Forest 475 Comment
  UC726305  Cryptantha muricata A. A. Heller 1938-5-28 15121 Butte 23 mi from Oroville (on the Feather Highway) Comment
  CHSC33412  Cryptantha torreyana R. A. Schlising; R. Banchero 1980-7-11 3880 Butte At Merrimac in extreme NE part of county. 1203 Comment
  CDA40502  Cryptantha torreyana T. C. Fuller 1962-7-12 9169 a Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  SEINET9628262 Image available Cryptogramma acrostichoides H. F. Copeland 1932-8-19 Butte Woods below crest Butte Creek. Vicinity of Jonesville, Lassen National Forest. 1700 Comment
  CHSC77413  Cupressus macnabiana Laura Bogni 1997-3-25 2 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  NY16699  Cupressus macnabiana A. A. Heller 1918-5-5 13009 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY16720  Cupressus macnabiana C. B. Wolf 1934-10-5 6160 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC61019  Cupressus macrocarpa Vernon H. Oswald 1993-7-29 5733 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CAS-BOT-BC224367  Cuscuta Barbara Ertter; Jeffrey Strachan; Lowell Ahart 1980-5-8 3325 Butte Peter Ahart Ranch ca 2-1/2 mi NE of Honcut between Marysville & Oroville 30 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  CHSC62449  Cuscuta californica var. breviflora B. Castro 1987-5-18 107 Butte Ca 9 mi e of Chico via Hwy 32 and 2 mi E on Altatina Drive. 438 Comment
  CHSC71460  Cuscuta californica var. californica Lowell Ahart 1998-7-19 8048 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CHSC113967  Cuscuta campestris Lowell Ahart 2014-11-24 19918 A Butte About 80 feet below the high water line of Lake Oroville, about 700 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville 231 Comment
  CHSC78508  Cuscuta pentagona Lowell Ahart 2000-9-4 8681 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC100108  Cuscuta subinclusa L. P. Janeway; Shandin Rudesill 2008-8-5 9534 Butte Northern High Sierra Nevada. Plumas National Forest; upper end of Magee Ridge at a small gap between Heinz Creek and Hibbard Creek; 2.7 air km north of Coyote Gap. 1353 Comment
  UCD126346  Cuscuta subinclusa A. A. Heller 1914-7-22 11588 Butte near West Branch. 1066 Comment
  CHSC44896  Cycladenia humilis var. humilis Lowell Ahart 1988-7-31 6142 Butte On the west side of the dirt road that crosses the West Branch of the Feather River, 2 miles by road northeast of Stirling City. 975 Comment
  CHSC83051  Cynodon dactylon Lowell Ahart 2002-10-17 9998 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
  CHSC109631  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  CHSC117599  Cynosurus echinatus L. P. Janeway 2016-6-2 12104 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC34174  Cyperus bipartitus L. Ahart 1981-9-15 3169 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC97272  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  SEINET13711405  Cyperus difformis Lowell William Ahart, Lowell William Ahart 1999-1 8139 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  UCD169397  Cyperus difformis L. P. Janeway 2001-6-13 7167 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CHSC102829  Cyperus eragrostis Lowell Ahart 2009-6-30 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC28661  Cyperus eragrostis J. D. Jokerst; M. S. Taylor 1979-10-13 393 Butte Junction of Griffith Gulch and Jordan Hill Rd. (Ponderosa Way on some maps). 701 Comment
  JEPS104074  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the w side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  POM111773  Cyperus eragrostis C. C. Bruce 1897-05 1887 Butte Little Chico Comment
  JEPS120855  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards W of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  SEINET3450848  Cyperus erythrorhizos Unknown 2003-6-30 10334 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  CDA38969  Cyperus flavescens L. Ahart 2000-8-23 8663 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  JEPS104601  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West of a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mile SE of Ord Ferry, about 2 miles SE of Ordbend, about 12 miles (air) SW of Chico. 32 Comment
  UCD54029  Cyperus fuscus L. Ahart 2000-9-15 8688 Butte west of a large pond on the east side of 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
  RSA695518  Cyperus fuscus L. Ahart 2000-7-23 8603 Butte About 12 mi (air) SW of Chico, near a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mi SE of Ord Ferry, about 2 mi SE of Ordbend. 32 Comment
  CHSC109757  Cyperus niger Lowell Ahart 2012-10-20 18502 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC65183  Cyperus niger Lowell Ahart 1995-8-19 7613 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, 12 miles south-east of Oroville. 36 Comment
  CHSC94763  Cyperus niger Lowell Ahart 2006-9-13 13316 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC68406  Cyperus rotundus L. P. Janeway; C. A. Janeway 1986-9-10 1839 Butte Within the City of Chico; on the CSU, Chico Campus. At edge of lawn at northeast corner of Plumas Hall. 59 Comment
  UC837509  Cyperus squarrosus A. A. Heller 1917-7-28 12840 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC114203  Cyperus strigosus Lowell Ahart 1987-7-17 5832 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC28803  Cyperus strigosus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-7-6 405 Butte Top of North Table Bt, 300 m NW. of intersection of Cherokee Rd and the eastern edge of section 17. Comment
  CHSC68408  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-9-14 1865 Butte On bank along small slough/backwater of the Sacramento River at 'the washout. 36 Comment
  CHSC68410  Cyperus strigosus L. P. Janeway 1986-9-20 1874 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC94584  Cyperus strigosus Lowell Ahart 2006-9-11 13299 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CDA42881  Dactylis glomerata L. Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CHSC6752  Dactylis glomerata Marilyn Lee 1968-5-3 64 Butte Intersection of Skyway and Coutolene Rd., 2 miles S. of DeSalbia. Comment
  CAS-BOT-BC445503  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley, 5 mi. NW. of Chico on Hamilton City Road. 45 Comment
  CHSC38672  Darmera peltata Vernon Oswald 1983-5-23 546 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek near the east boundary of the park. 207 Comment
  CAS-BOT-BC420353  Darmera peltata C. C., Mrs. Bruce 1898-2-1 2410 Butte unspecified Comment
  SEINET10536229  Delphinium Mary Susan Taylor 1979-5-4 Taylor 1985 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
  CHSC33138  Delphinium gracilentum J. D. Jokerst; M. S. Taylor 1980-4-19 614 Butte Butte Cr. Canyon 7.4 mi N of the Centerville Cemetary on Humbug Road. Comment
  CHSC90255  Delphinium hansenii subsp. hansenii Robert Kissane 1989-5-12 1 Butte Ca. 300 m e of Five Mile recreation area, Bidwell Park, Chico. Above south shore of Chico Creek. 80 Comment
  RSA126026  Delphinium hesperium E. K. Balls 1957-5-22 22501 Butte Hwy 40, 8.6 miles NE of Oroville. 91 Comment
  CHSC78092  Delphinium nudicaule Caleb E. Casey 1999-3-4 Butte Upper Bidwell Park, below bluffs on south side of Bear Hole. 304 Comment
  CHSC56771  Delphinium patens R. A. Schlising 1982-5-19 4249 Butte E of village of Feather Falls, just n of Fall River and Fall River Campground. 1066 Comment
  CHSC56780  Delphinium patens R. A. Schlising; R. Banchero 1981-5-20 4064 Butte Lumpkin Ridge at eastern border of county. 1280 Comment
  CHSC30886  Delphinium patens subsp. patens J. D. Jokerst 1979-3-20 1153 Butte Top of North Table Mt, W edge of Mt at the waterfall of the South branch of Coal Cr. 365 Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  CHSC53300  Delphinium variegatum J. R. Lee 1974-4-22 3 Butte Found 25 yds on the n side of the Skyway, 6 mi e of the Chico city limits. 152 Comment
  CHSC1189  Dendromecon rigida R. M. Staley 1952-7-10 Butte Nimshew road. 579 Comment
  CHSC59332  Dendromecon rigida J. L. Guardino 1992-3-23 4 Butte Paradise. 1/4 mi s of Circle Dr. terminus. 481 Comment
  CHSC41290  Deschampsia cespitosa S. C. Morey 1983-7-21 497 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC194309  Deschampsia cespitosa subsp. cespitosa A. A. Heller 1928-6-16 14621 Butte Butte Meadows Comment
  CAS-BOT-BC192653  Deschampsia danthonioides Lowell Ahart 1988-5-30 6024 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC192657  Deschampsia danthonioides A. A. Beetle 1941-6-27 2746 Butte Near Lomo at road forking to Chico Creek Comment
  CHSC2140  Deschampsia danthonioides H. Silberman; D. Isaac 1949-4-13 Butte 1/8 mi. N. Hooker Oak, Chico. 60 Comment
  CHSC104840  Deschampsia elongata Lowell Ahart 2010-6-12 16799 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC112523  Deschampsia elongata B. Castro 2012-10-18 1990 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 900 ft downstream (W) of its crossing under the Cohasset Hwy bridge. 54 Comment
  CAS-BOT-BC388456  Dianthus armeria Lowell Ahart 1983-6-30 4173 Butte Along the edge of old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC44641  Dicentra formosa Sally A. Carter 1988-4-24 Butte S. side of Rock Creek, ca. 1 mi e of Upper Vilas Rd., Cohasset, 17 mi ene Chico. 807 Comment
  UC120094  Dicentra formosa Mrs. R. M. Austin 1896-1 230 Butte Colby Comment
  CHSC56757  Dicentra uniflora J. Monelo; B. Castro 1990-4-16 185 Butte Butte meadows- Humboldt Rd ca 1.9 mi n from Hwy 32 n facing rock ca 100 ft nw of Humboldt Rd. 1341 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
  CHSC101769  Dichelostemma congestum Lowell Ahart 2009-4-26 15626 Butte South of a small drainage, about 120 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
  CAS-BOT-BC501093  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  CAS-BOT-BC501097  Dichelostemma multiflorum John Thomas Howell 1955-6-14 30435 Butte Magalia, Sierra Nevada 731 Comment
  POM215700  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor. Comment
  SEINET10533974  Dichelostemma multiflorum Carl B. Wolf 1937-6-12 Wolfe 2848 Butte Sierra Nevada Foothills, 2 1/2 miles SE of Oroville on road to Wyandotte. 300 feet. Upper Sonoran:- QUercus Douglas & P. Sabinana. Hab. Red clay, dry open slopes, sun. Comment
  SEINET12053819  Dichelostemma multiflorum L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CAS-BOT-BC502511  Dichelostemma volubile Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut; Along North Honcut Creek. Foothill Woodland. 50 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
  CHSC41980  Digitaria sanguinalis Lowell Ahart 1986-11-14 5464 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
  CHSC97734  Digitaria sanguinalis Lowell Ahart 2007-11-3 14568 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
  CAS-BOT-BC153764  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte Near Cohasset Comment
  SEINET13751508 Image available Diplacus grandiflorus Margaret J. Williams, Wayne Roderick 1984-1 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  SEINET8274767  Diplacus grandiflorus Unknown 1940-6-5 25672 Butte Route 24; 6 mi. up, along Feather River, above Oroville. 91 Comment
  CHSC34081  Diplacus kelloggii M. S. Taylor 1980-4-18 2501 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  SEINET13700565  Diplacus kelloggii M. J. Williams 1967-4-22 s.n. Butte Road from Oroville to Feather Falls. 244 Comment
  CAS-BOT-BC153212  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 426 Comment
  CHSC93965  Diplacus layneae R. D. Fischer 2004-6-20 761 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CAS-BOT-BC154029  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville 1550 Comment
  CHSC84284  Distichlis spicata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10223 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
  RSA726558  Dittrichia graveolens L. Ahart 2007-10-30 14510 Butte About 7 (air) miles west of Oroville. 34 Comment
  SBBG121273  Dittrichia graveolens L. Ahart 2007-10-30 14510 Butte Hwy 99, ca. 100 yds N of Badger Crk Rd, 300 yds S of Richvale East Rd, 7 mi W of Oroville 34 Comment
  CHSC95143  Dodecatheon alpinum R. D. Fischer 2005-6-5 856 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  SD3639  Dodecatheon alpinum E. B. Copeland 1930-6-26 Butte Jonesville, grassy swamp 1550 Comment
  CHSC52454  Dodecatheon clevelandii subsp. patulum John Copeland 1980-1-19 3 Butte 50 ft NE of locked gate, 0.5 mi E of Meridian Rd, 1.5 mi N of hwy 99, ca 5 mi N of Chico. Comment
  CHSC3506  Dodecatheon clevelandii var. patulum M. Gregg 1966-2-21 14 Butte Old Chico-Oroville Rd. So. East of Chico. 1/4 mile from Hwy 99E. 53 Comment
  CHSC14051  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte Ca. 4 mi se on Cherokee Rd, from Hwy 70, ca. 500 ft w of road near oaks in cow pasture. 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
  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
  SEINET10458513  Downingia bicornuta Lowell Ahart 1984-5-8 Ahart 4599 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  UC144216  Downingia bicornuta var. bicornuta Copeland 1903-5-30 3284 Butte Chico Comment
  UC196262  Downingia bicornuta var. bicornuta A. A. Heller 1914-4-24 11316 Butte 5 mi from Chico (Chico-Oroville road) Comment
  CDA42330  Downingia cuspidata Vernon H. Oswald & Lowell Ahart 1998-6-11 9225 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  CHSC60970  Downingia ornatissima Lowell Ahart 1993-5-17 6952 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
  CHSC38286  Downingia ornatissima var. ornatissima Vernon Oswald 1983-5-2 416 Butte Upper Bidwell Park, Chico 50 ft s of Upper Park Rd. and 300 ft e of its junction with Wildwood Ave. 83 Comment
  SBBG69654  Downingia pulchella M. M. Miles -May-1886 Butte Butte County [no specific locality] Comment
  UCD115560  Draba verna R. N. Bowman 1977-3-30 1352 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  CHSC4138  Draba verna var. aestivalis R. Carter 1966-3-13 298 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  POM34663  Drymocallis glandulosa var. glandulosa C. C. Bruce 1898-05 2436 Butte Butte Creek. Comment
  CDA32023  Dryopteris arguta L. Ahart 2009-8-2 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC115450  Dryopteris filix-mas M. Sutton; C. Yasuda 2013-3-19 9 Butte Feather Falls Trail. 1069 Comment
  CHSC48290  Dysphania ambrosioides Vernon Oswald 1983-10-10 1059 Butte Bidwell State Park on the e bank of the Sacramento R. w of Chico. Between the parking lot at the boat ramp and the river. Comment
  CHSC76050  Dysphania botrys G. F. Hrusa; T. D. Wilfred 1996-7-8 13082 Butte In full sun at old gun range. Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 800 Comment
  CAS-BOT-BC197004  Echinochloa colona Lowell Ahart 1977-8-14 1547 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA1978  Echinochloa colona L. Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  JEPS120722  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. Comment
  UCD72383  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  CAS-BOT-BC197104  Echinochloa crus-galli Mary Susan Taylor 1977-11-10 s.n. Butte Ca. 4 mi. s. of Chico 30 Comment
  CHSC34147  Echinochloa crus-galli L. Ahart 1981-9-19 3180 Butte Along the edge of Hwy 70, just n of Arch Rock Tunnel, ca. 10 mi s of Storrie. 550 Comment
  JEPS120763  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  UCD61092  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  CDA1993  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 Comment
  RSA733899  Echinochloa oryzoides Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 853 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  CHSC78540  Echinodorus berteroi Lowell Ahart 2000-8-28 8666 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
  JEPS95994  Echinodorus berteroi Lowell Ahart 1999-9-21 8275 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
  CAS-BOT-BC445585  Echinodorus berteroi Lowell Ahart 1981-7-26 3014 Butte 1/2 mi. south of Gray Lodge Waterfowl Management Headquarters, southwest of Gridley. 35 Comment
  RSA796045  Eclipta prostrata L. Ahart 2011-10-29 17718 Butte South side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC49635  Egeria densa Vernon Oswald 1984-8-20 1651 Butte Wilson Landing Slough at the w end of Wilson Landing Rd. In a slough of the Sacramento River. 39 Comment
  CHSC115322  Elatine Lowell Ahart 2015-4-24 20074 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 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
  JEPS122231  Elatine Lowell Ahart 2014-4-26 19411 -A Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CHSC113453  Elatine ambigua Lowell Ahart 2014-7-31 19695 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC78831  Elatine ambigua Lowell Ahart 2000-10-19 8710 Butte Fallow rice field, on the north side of Lower Honcut Road, west of Wyandotte Creek, about 150 yards west of the railroad, 1 1/2 miles west of Honcut, about 13 miles south of Oroville. 26 Comment
  JEPS124129  Elatine ambigua Lowell Ahart 2015-10-1 20534 Butte About 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) north of Biggs. Comment
  JEPS87389  Elatine chilensis Lowell Ahart 1993-5-17 6954 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
  CHSC78562  Eleocharis atropurpurea Lowell Ahart 2000-9-4 8683 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA127039  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow. 1341 Comment
  CAS-BOT-BC113455  Eleocharis bella Lowell Ahart 1974-6-7 s.n. Butte Peter Ahart Ranch, Honcut. 150 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
  JEPS98441  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 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
  CHSC68432  Eleocharis macrostachya L. P. Janeway 1986-10-19 1928 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  CHSC68433  Eleocharis macrostachya L. P. Janeway 1986-10-19 1938 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CHSC68440  Eleocharis macrostachya L. P. Janeway 1996-5-27 4983 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  JEPS98355  Eleocharis macrostachya Lowell Ahart 2000-7-7 8556 Butte 5 air miles NE of Feather Falls (just W of the bridge across Fall River, N side of Fall River, 3 mi N of Lumpkin Ridge Road) 1036 Comment
  JEPS103568  Eleocharis montevidensis Lowell Ahart 2002-6-7 9710 Butte On the S side of North Honcut Creek, Peter Ahart Ranch, ca 1 mile N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 38 Comment
  CHSC76426  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS115999  Eleocharis parishii Lowell Ahart 2009-6-19 15923 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  SEINET3478065  Eleocharis parishii Unknown 2000-6-21 8497 Butte Chico, Chico, about 3.3 air miles northeast of Manzanita Avenue, north of the Salmon Hole, south of parking area P 100 Comment
  CHSC55295  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte Drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  SEINET3441887  Eleocharis quinqueflora Unknown 2000-7-7 8555 Butte Dallas, Dallas, about 8 miles east, Sunnydale, about 4.5 miles south of highway 635, Tain east Boulevard 1030 Comment
  CHSC68449  Eleocharis suksdorfiana L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2499 Butte Coon Hollow, 1.0 mi southeast of the Humbug Summit Road. Meadows on north side of the creek. 1661 Comment
  CHSC101296  Elymus caput-medusae Lowell Ahart 2009-4-17 15551 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  UC302239  Elymus glaucus E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  UCR143543  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  SEINET10507698  Elymus glaucus Mary Susan Taylor 1980-5-27 Taylor 2722 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  JEPS119860  Elymus glaucus subsp. glaucus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18122 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking area, Lower Bidwell Park, Chico. Comment
  SEINET10661843  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 Ahart 10959 Butte T17N, R4E, northeast 1/4 Section 11. On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CHSC97405  Elymus glaucus subsp. jepsonii Robert Fischer 2006-6-27 1024 Butte Paradise. Sierra Nevada foothills, upper Paradise Pines, off Nimshew Road. 853 Comment
  CAS-BOT-BC234105  Elymus multisetus John Thomas Howell 1955-6-14 30456 Butte Magalia 731 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
  SEINET12193971  Epilobium adenocaulon L. Ahart, Ahart, P. 1983-1 4212 Butte ca 5 mi NE of Forbestown, Forbestown Reservoir 450 Comment
  SEINET6631140 Image available Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-1 428 Butte Jonesville 1600 Comment
  SEINET6635801 Image available Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte end of Nelson Bar Road, ca. 1 mi S on Kunkle Reservoir, ca. 3 mi S of Paradise; near boat ramp 302 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
  JEPS95944  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UC764872  Epilobium cleistogamum R. F. Hoover 1937-5-19 2242 Butte 10 mi nw Chico Comment
  CHSC94065  Epilobium densiflorum R. D. Fischer 2005-6-12 742 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made near the junction of Guardian Trail on the dry roadbed, an opening in a brush/oak woodland. 219 Comment
  CHSC46388  Epilobium foliosum Lowell Ahart 1989-5-10 6225 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 274 Comment
  SEINET10453012  Epilobium foliosum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4185 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  POM213943  Epilobium hallianum H. F. Copeland 1934-7-9 s.n. Butte Region of Jonesville, near the source of Butte Creek 1829 Comment
  CHSC20111  Epilobium minutum M. S. Taylor 1975-5-9 571 Butte Ca. 50 ft e of the Skyway, ca. 1/4 mi n of De Sabla turnoff, Magalia. 731 Comment
  SEINET10453180  Epilobium minutum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4712 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10453181  Epilobium minutum Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4653 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
  UC177594  Epilobium obcordatum H. M. Hall 1914-7-27 9793 Butte Butte Mt. 2072 Comment
  CHSC10696  Epilobium torreyi Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS119904  Epilobium torreyi Lowell Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  UC600560  Epilobium torreyi H. F. Copeland July, 1930 Butte Jonesville Comment
  JEPS119721  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CHSC24862  Equisetum hyemale E. Rilla 1976-4-4 9 Butte Ca. 100 yds w of Butte Creek, ca. 3 ft w of Old Humboldt Rd, ca. 2 mi e of Butte Meadows. 1463 Comment
  CHSC105791  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
  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
  SEINET10530239  Equisetum laevigatum Mary Susan Taylor 1975-8-31 Taylor 891 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC113541  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 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
  RSA518700  Eragrostis hypnoides L. Ahart 1990-9-30 6599 Butte along the edges of Lake Oroville, below the high water line of lake Oroville, below Canyon Creek Bridge across Lake Oroville 229 Comment
  UC1563256  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  CDA31778  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  CHSC41971  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-7 5428 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC278504  Eragrostis pilosa Lowell Ahart 1987-5-27 5697 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10864765  Eragrostis pilosa A. Arthur Heller 1914-8-20 Heller 11688 Butte Plentiful in a young olive orchard 8 miles north of Oroville near the base of Table mountain. Comment
  JEPS113670  Eragrostis pilosa var. pilosa Lowell Ahart 2007-8-19 14491 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  UCD65676  Eragrostis pilosa var. pilosa L. Ahart 1977-8-14 1552 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 15 Comment
  CHSC41869  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 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
  CHSC88081  Erigeron divergens R. D. Fischer 2004-3-28 166 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at base of cliffs below Disk Golf Course, above Guardian Trail. 304 Comment
  CAS-BOT-BC296823  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek Comment
  LA203585  Erigeron inornatus E. B. Copeland; 1930-8-6 490 Butte Jonesville 1550.0 Comment
  CHSC44154  Erigeron lassenianus var. lassenianus V. Oswald; L. Ahart 1988-7-26 3617 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CAS-BOT-BC295772  Erigeron petrophilus var. sierrensis Lowell Ahart 1981-7-7 2932 Butte Ca. 0.5 mi. W of the Forbestown Res., NE of Forbestown 750 Comment
  CHSC33715  Erigeron strigosus J. D. Jokerst 1981-6-13 1337 Butte 1.6 mi below the Road to Big Bald Rock on the road to Milsap Bar on the Middle Fork of the Feather River. Comment
  CHSC100494  Erigeron sumatrensis Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15412 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC30417  Erigeron sumatrensis J. D. Jokerst; M. S. Taylor 1979-11-11 634 A Butte Adjacent to Goodspeed-Watt Rd, 0.1 mi N of its jct with Nelson Rd, ca 6.0 mi N of Chico. Comment
  JEPS128619  Eriochloa contracta Lowell Ahart 2017-8-1 21654 Butte Park west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CHSC19919  Eriodictyon californicum M. S. Taylor 1975-2-16 385 Butte Ca. 2 mi s of Concow Reservoir on Jordan Hill Rd. Comment
  UCD119298  Eriodictyon californicum P. Thompson 1996-4-26 33 Butte Hwy 70. 1800 Comment
  SEINET10479808  Eriogonum latifolium subsp. nudum Mary Susan Taylor 1975-6-30 Taylor 814 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  CHSC91480  Eriogonum lobbii L. P. Janeway; Linnea Hanson 2005-6-29 8446 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  LA206880  Eriogonum marifolium var. apertum E. B. Copeland; 1930-7-12 410 Butte above Jonesville 2100.0 Comment
  CAS-BOT-BC263201  Eriogonum marifolium var. marifolium H. F. Copeland 1920-7-11 72 Butte Scotch John Meadows 1828 Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  SEINET10479531  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1975-9-19 Taylor 916 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UC600501  Eriogonum nudum var. pubiflorum H. F. Copeland 1927-9-2 949 Butte Jonesville Comment
  UC1594624  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below the high water line of Lake Oroville, about 3/4 mi sw of Rocky Point); Lake Oroville 243 Comment
  UCD163429  Eriogonum umbellatum var. ahartii Robert E. Preston 2015-7-17 3011 Butte Along Concow Rd, 1.8 mi NE of Concow Reservoir. 866 Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  CAS-BOT-BC262205  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  UC912723  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte summit above Jonesville 2133 Comment
  SEINET11931591  Eriogonum ursinum M. S. Taylor, Jokerst, J. D. 1980-1 2145 Butte Humboldt Peak, at the summit 2155 Comment
  CHSC37517  Eriogonum ursinum var. ursinum M. S. Taylor 1982-6-6 4608 Butte On serpentine along Pulga Rd, just n of its jct with Hwy 70, ca. 20 air mi ne of Oroville. 487 Comment
  CAS-BOT-BC262342  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC83018  Eriogonum wrightii var. trachygonum Lowell Ahart 2002-10-16 9981 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC38067  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-23 312 Butte Ca. 1/4 mi N of Fall Creek, SW of Rag Dump. 1158 Comment
  CAS-BOT-BC308158  Eriophyllum lanatum var. grandiflorum Peter H. Raven 1963-5-8 18359 Butte Along road to Cohasset north of Chico Comment
  CAS-BOT-BC308170  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  CHSC4003  Erodium brachycarpum L. R. Alexander 1967-3-29 13 Butte Found 1 mi. from Chico on the left hand side of Paradise road. 60 Comment
  UCD18878  Eryngium castrense Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 186 Butte off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072. Comment
  CHSC105811  Erythranthe breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC1789  Erythranthe glaucescens H. Summers 1929-3-25 Butte Butte Creek. Comment
  CHSC78102  Erythranthe glaucescens Caleb E. Casey 1999-4-6 Butte Bear Hole, Upper Bidwell Park. Found near Chico creek along old diversion canal. 121 Comment
  CHSC113285  Erythranthe guttata Lowell Ahart 2014-5-13 19465 Butte Below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC113517  Erythranthe guttata Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  CHSC54452  Erythranthe guttata Vernon H. Oswald; Lowell Ahart 1991-7-15 4741 Butte Milsap Bar Rd (Forest Rd 22N62), 6.4 miles west of Feather Falls-Little Grass Valley Rd (Forest Rd 22N94), ca 5.5 miles (air) east-northeast of Brush Creek. 845 Comment
  SD4665  Erythranthe moschata E. B. Copeland 1929-7-13 463 Butte Jonesville, in half shady glades 1550 Comment
  CHSC44818  Erythranthe nasuta R. Banchero 1980-4-26 131 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 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
  CHSC44816  Erythranthe pulsiferae R. Banchero 1980-6-12 208 Butte Along Hwy 32 ca 3.9 mi S of its jct with Humbolt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  CHSC109129  Erythronium multiscapideum Lowell Ahart 2012-3-23 17787 Butte Along a small drainage, about 100 yards east of Big Chico Creek, about 300 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 201 Comment
  CHSC32741  Erythronium multiscapideum M. S. Taylor 1981-4-14 3533 Butte S side of Ponderosa Way (Rim Rd), ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  CAS-BOT-BC504519  Erythronium multiscapideum Lois E. Edwards 1917-4-1 s.n. Butte De Sabla 548 Comment
  SEINET10839630  Erythronium multiscapideum Lowell Ahart 1983-4-14 Ahart 3934 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  UCD149852  Erythronium multiscapideum Harry George; William Anderson 1965-4-20 s.n. Butte Feather River Canyon. Comment
  CHSC3818  Eschscholzia californica L. E. Dunkel 1965-4-15 20 Butte Along Lindo Channel, ca. 300 yards e of Longfellow Bridge ca 40 yards s of dwelling at 1356 Manzanita Ave. 27 Comment
  CHSC38578  Eschscholzia californica Vernon Oswald 1983-4-10 317 Butte Upper Bidwell Park, Chico, 300 ft w of the parking lot at Day Camp. 91 Comment
  SEINET3296966 Image available Eschscholzia californica A. A. Heller 1938-4-23 15052 Butte West side of the summit on the Feather River Highway ne near the Yankee Hill road. Comment
  CHSC46496  Eschscholzia lobbii Lowell Ahart 1976-4-14 1066 Butte Found growing on a gravel bar near a small wash. Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Huncut, about 12 miles south of Oroville. 36 Comment
  CHSC118891  Euonymus occidentalis R. A. Schlising 1986-7-18 4490 Butte NE of village of Feather Falls, on road to Fall River Campground. 1158 Comment
  CDA13267  Euonymus occidentalis var. occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-9 13115 Butte Plumas National Forest; Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  CHSC613  Euphorbia lathyris K. Stern 1963-8-8 Butte Near Chico in an orchard. Comment
  CDA19192  Euphorbia oblongata L. Pejsa 2001-5-16 PDR P 073954 Butte Sacramento Valley; at 2760 Mariposa, Chico. 0 Comment
  CDA34255  Euthamia occidentalis L. Ahart 2009-10-8 16413 Butte About 20 yards northeast of Parking Lot 12,Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  CHSC109356  Fallopia japonica T. M. Hanson; Melanie Williams 2012-10-11 Butte Northern Sierra Nevada. Plumas National Forest; on the southwest side of the North Fork Feather River 200 m southwest of Bardees Bar. 328 Comment
  CHSC113229  Festuca bromoides Lowell Ahart 2014-4-25 19408 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC74163  Festuca occidentalis B. Castro; E. Hubert 1996-7-18 682 Butte Ca 4.5 air mi NW of town of Brush Creek, ca 1.5 air mi W of French Creek, on S side of USFS Rd 22N31 and just E of Rd 22N34Y. In clearcut area on either side of tributary to Bidwell Creek. 865 Comment
  JEPS110211  Festuca occidentalis Lowell Ahart 2006-7-16 12977 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
  RSA700272  Festuca occidentalis L. Ahart 2004-7-23 11298 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road, about 1 3/4 miles (air) west of Philbrook, Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  JEPS120095  Festuca perennis Lowell Ahart 2012-6-14 18189 Butte On the south side of the path, lawn, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC74046  Festuca subulata B. Castro; L. Gehrung 1998-7-2 801 A Butte Ca 7 air mi NW of Brush Creek, ca 0.5 mi E of Hungry Hunt Peak, on W edge of USFS Rd 23N28. 1091 Comment
  RSA337396  Festuca subuliflora L. Ahart, P. Ahart 1984-6-10 4702 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  CHSC77602  Ficus carica L. P. Janeway 2000-3-29 6642 Butte Sacramento Valley. In narrow riparian strip along Little Chico Creek at Salem Street in Chico. 60 Comment
  JEPS115276  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 242 Comment
  JEPS95914  Fimbristylis autumnalis Lowell Ahart and Vernon H. Oswald 1999-8-13 8145 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
  CHSC80579  Foeniculum vulgare Lowell Ahart 2001-6-13 8816 Butte Sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC53777  Frangula rubra E. B. Copeland 1931-7-28 657 Butte Jonesville, on dry ridge west of North Willow Creek 1650 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
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  CHSC57819  Fraxinus dipetala Vernon H. Oswald; Lowell Ahart 1992-4-8 4897 Butte Near the abandoned railroad grade in Oroville Dam Recreation Area on the S side of Thermalito Diversion Pool at the NW foot of Sycamore Hill. 73 Comment
  POM76518  Fraxinus dipetala C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  CHSC115408  Fraxinus latifolia M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  SEINET8478820  Fritillaria eastwoodiae M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CAS-BOT-BC124014  Fritillaria eximia Mrs. J. H. Morrison 1932-3-1 s.n. Butte On the Pence grade, east of Paradise Comment
  CHSC2285  Fritillaria recurva P. Delaplane 1965-5-4 53 Butte On south side of Concow Road, south side of Lake Concow. 1219 Comment
  SEINET10500609  Galium Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5523 Butte Along Rim Road (Ponderosa Way) N. of Jarbo Gap off Hwy 70, ca. 23 air mi NE of Oroville. Comment
  POM68690  Galium aparine var. echinospermum C. C. Bruce 1897-06 1955 Butte Chico. Comment
  CHSC11822  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  UC600431  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte gulch draining into Colby Canyon 1524 Comment
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  JEPS26676  Galium bolanderi P. C. Hutchison 1969-6-9 2099 Butte on hwy US Alt. 40 1 mi s (above) Pulga Bridge; canyon of the north fork of the Feather River Comment
  UC195388  Galium bolanderi A. A. Heller 1914-7-24 11627 Butte slopes near Forest Ranch 731 Comment
  CHSC61648  Galium grayanum var. grayanum Lowell Ahart 1993-9-8 7165 Butte On the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  RSA712862  Galium murale L. Ahart 2006-5-8 12598 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  CHSC101133  Galium parisiense Lowell Ahart 2009-5-15 15679 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC117427  Galium parisiense Lowell Ahart 2016-5-30 20901 Butte 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
  CHSC42431  Galium parisiense Lowell Ahart 1987-5-6 5537 Butte At the Poe Power House that is along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC101837  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 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
  CHSC30902  Galium porrigens var. tenue M. S. Taylor 1980-3-1 2349 Butte On SE facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise. 301 Comment
  CHSC61010  Galium spurium var. echinospermum Lowell Ahart 1993-6-20 6988 A Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1523191  Galium trifidum M. S. Taylor and L. Ahart 1981-8-16 4196 Butte 3 mi s Philbrook Reservoir (ca 6 mi ne of Stirling City); Pulga NW Quadrangle, Jones Meadow 1828 Comment
  CHSC51011  Galium trifidum var. pacificum Lowell Ahart 1990-7-2 6535 Butte Near McCabe Creek, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UC1562286  Gamochaeta coarctata Lowell Ahart 1990-7-20 6573 Butte about 1 1/2 mi n and 3 mi e Honcut (about 12 mi se of Oroville); North Honcut Creek, Peter Ahart Ranch 54 Comment
  JEPS119506  Garrya fremontii Lowell Ahart 2012-3-2 17759 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  RSA795641  Garrya fremontii L. Ahart 2012-3-2 17759 -A Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 423 Comment
  CHSC40454  Gastridium phleoides Lowell Ahart 1985-6-17 5050 Butte Near the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  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
  UCSC000103  Gastridium ventricosum C. G. Albertus 1933-5-29 s.n. Butte 0.5 mile N. of Wiek - Chico Comment
  SBBG128461  Gaultheria ovatifolia L. Ahart 2011-8-23 17653 Butte Pinkard Crk flows through the meadow, 40 yards N of the corral, ca. 1 mi N of Lost Crk Reservoir Dam, ca. 4 mi NE of Clipper Mills 1133 Comment
  CHSC84437  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. 1771 Comment
  CHSC28526  Gayophytum heterozygum M. S. Taylor 1979-8-4 2175 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CHSC39275  Gayophytum heterozygum Lowell Ahart 1983-7-29 4224 Butte Along the edge of the dirt road, about 2 miles south of Milsap Bar, about 23 miles north-east of Oroville. 750 Comment
  CHSC94247  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  UC204405  Gayophytum heterozygum A. A. Heller 1914-7-22 11583 Butte Little Summit 1463 Comment
  SBBG127506  Gayophytum heterozygum L. Ahart 2010-9-21 17215 Butte E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi (air) NE of Jones Meadow, ca. 2 1/2 mi (air) SE of Philbrook Reservoir 1917 Comment
  HSC72959  Gayophytum humile M. S. Taylor 1978-7-19 1778 Butte On E side of Upper Scotts John Rd., 2 mi. N of its junction with Scotts John Rd., 6 mi. NE of Jonesville 1890 Comment
  UC600544  Gayophytum humile H. F. Copeland 1932-7-24 Butte Butte Creek Canyon Jonesville (w wall, near headwaters) Comment
  CHSC30078  Gayophytum racemosum R. A. Schlising 1980-7-16 3913 Butte Margins of Butte Creek NE of Butte Meadows, SW of Cherry Hill Campground. 1402 Comment
  CAS-BOT-BC208056  Genista monspessulana Saichi Kawahara 1968-5-4 385 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC106133  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. 42 Comment
  JEPS117906  Gentiana newberryi var. tiogana R. A. Schlising & A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles E of Jonesville, along Humbug Road 1767 Comment
  JEPS114965  Geranium carolinianum Lowell Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  RSA0028179  Geranium carolinianum C. C. Bruce 1897-06 1931 Butte Little Chico. Comment
  JEPS119709  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC101259  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC41372  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-6-12 3693 Butte 0.25 mi S of Tehama County line on Highway 32 near Lomo. 1121 Comment
  CHSC1242  Gilia capitata subsp. pedemontana Edna Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  SEINET7042708  Gilia tricolor A. G. Vestal 1963-5-9 s.n. Butte At lower slope of lava mesa. Road to Chico. Ca. 11 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 604825mE, 4383603mN. Comment
  CAS-BOT-BC266591  Githopsis pulchella Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC266596  Githopsis pulchella David D. Keck 1933-5-30 2403 Butte 3 miles N of Chico on Richardson Springs Road Comment
  SEINET10460573  Githopsis pulchella subsp. campestris Roberson 1956-4-9 ROBERSON s.n. Butte Near Paradise along Skyway 549 Comment
  SEINET10460576  Githopsis pulchella subsp. campestris Diven 1930-5-15 DIVEN s.n. Butte Humboldt Road east of Chico 244 Comment
  CHSC31948  Githopsis specularioides J. D. Jokerst 1979-5-1 1220 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  CHSC38288  Githopsis specularioides Vernon Oswald 1983-4-25 381 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CHSC62542  Githopsis specularioides L. P. Janeway 1993-5-2 4336 Butte Serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  UC890660  Githopsis specularioides A. A. Heller 1915-4-20 11853 Butte 3 mi from Chico (Chico-Centerville road) Comment
  HSC43123  Githopsis specularioides Maralyn O'Meara 1974-4-20 276 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC51269  Glinus lotoides Lowell Ahart 1990-10-5 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  UC1563258  Glinus lotoides unknown 1990-10-5 6631 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  UCD85131  Glyceria elata Robert E. Preston 1982-7-16 333 Butte ca. 1/2 mi. SW of Crane Valley. At margin of stream. 1554 Comment
  SEINET10508575  Glyceria occidentalis Lowell Ahart 1983-4-18 Ahart 3936 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET10473776  Gnaphalium chilense Mary Susan Taylor 1975-4-25 Taylor 503 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CDA6042  Gnaphalium luteoalbum G. D. Barbe, T. C. Fuller, P. W. Michael 1989-9-21 4367 Butte Rice Experiment Station, 3 miles north of Biggs on Highway 162. 0 Comment
  CHSC38352  Gnaphalium luteoalbum Vernon Oswald 1983-4-25 391 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 353 Comment
  RSA715578  Gnaphalium luteoalbum L. Ahart 2005-4-14 11713 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS120609  Gnaphalium palustre Lowell Ahart 2013-11-13 19228 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
  UC1586523  Goodyera oblongifolia Lowell Ahart 1991-9-19 6728 Butte about 2 mi nw of Four Trees (about 2 mi w of Croville-Quincy Highway, about 2 mi ne of Coyote Gap, near where 2 branches of Wildcat Creek come together); Wildcat Creek 1219 Comment
  SEINET6167160  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  UCD138957  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte ca. 0.2 mile north of Lost Creek Reservoir Dam, ca., 2.2 miles northwest of Strawberry Valley. 1100 Comment
  CHSC48989  Gratiola ebracteata Vernon Oswald 1987-8-10 3200 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  CHSC78168  Gratiola ebracteata Lowell Ahart 2000-6-6 8450 Butte On the sides of an old gold mining pit, just southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  JEPS123885  Gratiola ebracteata Lowell Ahart 2015-5-5 20140 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  OBI21642  Grindelia camporum Tracey and Viola Call, Viola Call 1964-6-28 2310 Butte 5 mi S of the town of Berry Creek, 4 mi N of Feather River 305 Comment
  SEINET10872144  Grindelia camporum Mary Susan Taylor 1979-10-13 Taylor 2262 Butte T22N R4E s edge of sec 8. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 5.3 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  SEINET267158  Grindelia camporum var. camporum T. A. Ranker, P. G. Trapp 1994-6-17 1625 Butte Pence Road south of Paradise. 395 Comment
  HSC23332  Grindelia hirsutula B. Wilson 1968-5-3 185 Butte On Skyway, 2 mi. W of Paradise, N side of the road Comment
  JEPS113891  Grindelia hirsutula L. P. Janeway 2007-6-27 9077 Butte Northern High Sierra Nevada; Plumas National Forest; along Road 28 at Road 22N01; ridgetop between Swayne Hill and Chino Ridge; 3.7 air km N-NE of the mouth of French Creek at the North Fork Feather River arm of Lake Oroville. Along edge of old but well-used dirt road. 832 Comment
  RSA726431  Grindelia hirsutula var. davyi L. Ahart 2007-11-3 14576 Butte About 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5.5 miles southeast of Paradise. 335 Comment
  SEINET10497305  Hackelia californica Mary Susan Taylor 1978-9-9 Taylor 1909 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  JEPS95865  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC41263  Hastingsia serpentinicola S. C. Morey 1983-7-21 483 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC306289  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles south of Cherokee on road to Oroville Comment
  UC177603  Hedypnois rhagadioloides H. M. Hall 1914-8-2 9832 Butte Sierra foothills back of Oroville Comment
  CHSC45679  Helenium bigelovii Vernon Oswald 1983-7-6 819 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  SEINET10891993 Image available Helenium bigelovii R. M. Austin Austin 790 Butte Colby. Comment
  SEINET11830212  Helenium bigelovii Unknown 1966-1 432 Butte 0.67 mi SE of Little Bald Rock on N side of Bean Creek Rd Comment
  JEPS113571  Helenium puberulum Lowell Ahart 2007-7-27 14399 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  UC129380  Helianthella californica subsp. nevadensis Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  UC217228  Helianthella californica subsp. nevadensis H. M. Hall 1917-5-13 10300 Butte Honeymoon Grade 396 Comment
  CHSC11823  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville, at 'the Summit'. 2150 Comment
  CHSC86586  Helianthella californica var. nevadensis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7859 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.2 km east-southeast of south end of Bidwell Bar bridge. 277 Comment
  CHSC45681  Helianthus annuus Vernon Oswald 1987-8-2 3174 Butte East side of the Sacramento River just north of (Glenn Co.) Rd. 29. 32 Comment
  CHSC76120  Helianthus bolanderi G. F. Hrusa 1997-8-5 14064 Butte Sierra Nevada. Grown in Woodland. Magalia. Immed. N of Magalia Reservoir in N hillside above Little Butte Creek. Accessed off Holmwood Rd. Comment
  CHSC47989  Heliotropium curassavicum Vernon Oswald 1983-6-28 778 Butte Graylodge Waterfowl Management Area in Parking Lot 4. Comment
  CHSC117400  Heliotropium europaeum Lowell Ahart 2016-5-30 20888 Butte On the bottom of a deep wash (west of where we removed gravel), Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC95066  Hemizonella minima L. P. Janeway 2006-5-28 8645 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
  UC405404  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte near Dunham Comment
  UCD73011  Hesperevax acaulis Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  JEPS115590  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  JEPS104456  Hesperevax caulescens Lowell Ahart 2003-5-14 10175 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  CHSC45497  Hesperocnide tenella Lowell Ahart 1974-4-14 399 Butte Peter Ahart Ranch, about 1 mile north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS98429  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte 3 mi SE of Paradise (just W of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 286 Comment
  UC2062461  Heteranthera limosa Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16444 Butte Rice Experiment State NW of Biggs, drained field at NE corner of Hamilton & Riceton roads. Comment
  UCD139991  Heteranthera limosa Lowell Ahart 1974-4-29 618 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC51863  Heterocodon rariflorum L. P. Janeway; R. A. Schlising 1988-7-1 2925 Butte Near a small lake ca 1.2 mi W of Butte Cr House. 1813 Comment
  CHSC96245  Heterocodon rariflorum R. Fischer 2006-5-27 995 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  JEPS127014  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 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
  SEINET10460745  Heterocodon rariflorum Mary Susan Taylor 1980-4-27 Taylor 2548 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  UCSB63791  Heterocodon rariflorum Ahart, Lowell 1997-8-1 Butte Damp rocky dark soil, 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. Uncommon, inconspicuous. Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CAS-BOT-BC143631  Heteromeles arbutifolia Sally Bianco 1995-11-3 1050 Butte 0.25km N of Concow School on S end of Concow Rd. 549 Comment
  CHSC39789  Heteromeles arbutifolia Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  CHSC77442  Heteromeles arbutifolia Tim Stofer 1997-4-29 34 Butte Located 1 mi. from the shooting range on the South Rim Trail off South Park Dr. in upper Bidwell Park. Comment
  JEPS115260  Heteromeles arbutifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  UC114259  Heteromeles arbutifolia Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC42860  Heuchera micrantha var. erubescens Lowell Ahart 1987-5-9 5596 Butte Along Pulga Road, about 1/2 mile sout-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  SEINET10483022  Heuchera micrantha var. erubescens Mary Susan Taylor 1980-5-27 Taylor 2685 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  JEPS104590  Hoita macrostachya Lowell Ahart 2003-7-17 10420 Butte On the e side of Black Bart Rd, ca 1/2 mi w of the intersection of Forbestown Rd and Black Bart Rd, ca 4 mi (air) sw of Forbestown. 716 Comment
  SEINET10451904  Hoita macrostachya Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4201 Butte T19N R6E nw sec 19. Ca. 0.5 mi sw of jct of Oroville-Forbestown Rd & Black Bart Rd, ca. 6 mi sw of Forbestown. Yellow Pine Forest; 750 m. 750 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
  SEINET10483353  Holodiscus boursieri Lowell Ahart 1985-6-16 Ahart 5044 Butte About 1/4 mile south-west of the Forbestown Resevoir, about 4 miles north-east of Forbestown. Comment
  JEPS108574  Holodiscus discolor L. P. Janeway, Matt Brown, S. Mackey Hillaire, L. Hanson 2005-4-25 8370 Butte Northern High Sierra Nevada. Plumas National Forest; north end of Rocky Ridge, southwest side of Rim Road (Ponderosa Way) 1.4 road km southeast of junction with Concow Road 1036 Comment
  CHSC42797  Holodiscus microphyllus var. glabrescens L. P. Janeway 1987-7-5 2463 Butte Along the road to High Lakes, 5.2 mi from the Skyway (Philbrook Rd). 1844 Comment
  RSA4243  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. 2000 Comment
  CHSC113947  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte 20 yards east of the east edge of a large wet meadow (some bog), about 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC284987  Hordeum depressum Lowell Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CDA14086  Horkelia californica subsp. dissita G. F. Hrusa, T. D. Wilfred 1997-7-3 13970 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Flowers white. Comment
  CHSC74119  Horkelia californica subsp. dissita B. Castro 1998-7-28 811 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. Near eastern edge of meadow. 929 Comment
  CHSC52126  Horkelia fusca subsp. parviflora L. P. Janeway 1988-6-25 2863 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from The Skyway. 1554 Comment
  UC600383  Horkelia fusca subsp. tenella E. B. Copeland June, 1931 Butte Jonesville Comment
  CAS-BOT-BC532316  Horkelia fusca var. parviflora V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC24675  Horkelia tridentata S. Deaton 1976-4-14 19 Butte 20 ft w of Feather Falls trail and 3 mi n of Falls parking lot. 914 Comment
  CAS-BOT-BC536250  Horkelia tridentata var. tridentata Lowell Ahart 1985-5-15 5001 Butte 1/8 mile east of the dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC42556  Hosackia oblongifolia var. oblongifolia Lowell Ahart 1987-5-27 5709 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC52441  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-6-27 2359 Butte Mdw on E slope of Bald Mtn along the Concow Rd. 1694 Comment
  LA47950  Hosackia oblongifolia var. oblongifolia E. B. Copeland; 1930-7-11 420 Butte Jonesville 1500.0 Comment
  CHSC39335  Hosackia pinnata Lowell Ahart 1983-6-26 4139 Butte Along the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC8585  Hosackia pinnata B. Jackson 1968-5-5 27 Butte Taken ca. 1 mi S. of Cohasset along stream by Cohasset Rd. 365 Comment
  CHSC33103  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-15 3749 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  CHSC60979  Hosackia stipularis var. ottleyi Lowell Ahart 1993-6-16 6966 Butte Southwest of the intersection of Balck Bart Road and Forbestown Road, about 3 1/2 (air) miles southwest of Forbestown. Common. Yellow Pine Forest. 609 Comment
  UCD38749  Hypericum Beecher Crampton 1957-9-17 4615 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  CAS-BOT-BC400830  Hypericum anagalloides A. A. Heller 1914-8-6 11637 Butte Sierra Nevada at Chico Meadows 1219 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
  UC1442629  Hypericum anagalloides Lowell Ahart 1978-9-16 Butte along North Honcut Creek Peter Ahart Ranch; Honcut, Peter Ahart Ranch 50 Comment
  POM285806  Hypericum androsaemum J. H. Morrison, Lyman Benson, J. Morrison 1929-06 s.n. Butte Oroville - Quincy, Sierra Nevada. 1829 Comment
  CHSC3323  Hypericum concinnum Robert L. Smith 1966-5-22 48 Butte Paradise, 5 miles SW of Post Office. Comment
  CAS-BOT-BC410224  Hypericum concinnum Mrs. J. H. Morrison 1932-5-22 s.n. Butte Durham Comment
  JEPS107575  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 28 Comment
  SBBG128029  Hypericum perforatum L. Ahart 2010-6-25 16841 Butte open pasture field, on the N sideof the improved parking area, ca. 100 yards N of the cattle chute and Cherokee Rd, N Table Mtn, ca. 7 mi N of Oroville 409 Comment
  SEINET10472157  Hypericum perforatum Lowell Ahart 1990-10-3 Ahart 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CAS-BOT-BC401334  Hypericum scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville 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
  CHSC42461  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC312925  Hypochaeris glabra E. B. Copeland 1899-4-4 s.n. Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CHSC11955  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  UCD138747  Iris hartwegii R. H. Ramsey 1961-5-13 53 Butte 1 mile north of Berry Creek on Oroville - Quicy Road. Comment
  CHSC84916  Iris macrosiphon Ron P. Garcia 1995-4-23 20 Butte E side of Coutolenc Rd, 0.1 mi n of Skyway, ca. 0.5 mi n of Magalia. 707 Comment
  SEINET10469752  Iris macrosiphon Mary Susan Taylor 1975-2-16 Taylor 379 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  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-BC69946  Isoetes howellii E. B. Copeland 1903-5-30 3281 Butte Chico. Comment
  CHSC30017  Isoetes nuttallii L. Ahart 1980-5-17 2271 Butte 1/8 mi se of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC31517  Isoetes nuttallii L. Ahart 1974-4-11 369 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC58863  Isoetes nuttallii Lowell Ahart 1992-7-21 6814 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS117727  Isoetes nuttallii Lowell Ahart 2010-5-14 16655 Butte In the tracks of an old road, 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
  SEINET10530327  Isoetes nuttallii Mary Susan Taylor 1980-5-31 Taylor 2773 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
  CHSC78229  Isoetes orcuttii Lowell Ahart 2000-6-29 8585 Butte In the southwest part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
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Oct 30 2007
  SEINET3441891  Isolepis cernua Unknown 2000-5-10 8334 Butte Oroville, Oroville, about 12 air miles southeast, about 1.75 miles north and 1.25 miles east of Honcut, Peter Ahart Ranch, about 100 yards south of a deep wash, just east of a dirt road 30 Comment
  CHSC113273  Isolepis setacea Lowell Ahart 2014-5-13 19467 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC61513  Isolepis setacea Lowell Ahart 1993-6-20 6975 Butte Along seep edges, about 1/2 mile south of Quartz Hill. 1219 Comment
  SEINET10536079  Isopyrum occidentale Mary Susan Taylor 1980-4-6 Taylor 2460 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  CAS-BOT-BC340242  Jensia rammii Lowell Ahart 1979-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC102711  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south 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
  CHSC3365  Juglans californica var. hindsii M. Gregg 1966-4-11 90 Butte On the Nature Trail in Bidwell Park, Chico. Just off of E. 8th St. Comment
  JEPS119622  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC109891  Juncus Lowell Ahart 1982-6-1 3527 Butte Sierra Nevada. About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 750 Comment
  CHSC2214  Juncus articulatus I. Boyd 1949-5-26 Butte Bidwell Park. 60 Comment
  RSA325941  Juncus balticus subsp. ater L. Ahart 1984-5-6 4586 Butte Along North Honcut Creek, Peter Ahart Ranch, ca. 1.3 miles N and 3 miles E of Honcut; ca. 12 miles S of Oroville. 50 Comment
  CDA34649  Juncus balticus var. balticus L. Ahart 2009-8-23 16291 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  JEPS113865  Juncus brachyphyllus Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  UC1562288  Juncus bufonius Lowell Ahart 1990-7-4 6545 Butte about 0.5 mi sw Enterprise Bridge across Lake Oroville (along McCabe Creek); Lake Oroville, McCabe Creek 243 Comment
  CHSC113167  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC38916  Juncus bufonius var. bufonius Vernon Oswald 1983-4-9 312 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 140 Comment
  CHSC99011  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14795 Butte Dry to damp granite soil, 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. 305 Comment
  JEPS120656  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  SEINET10795833  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 Ahart 16665 Butte T22N, R2E, northeast 1/4 Section 10. Normal size plants, on damp red thin soil, along a small drainage, near south park fence, Disc Golf Area, 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. 351 Comment
  CHSC38918  Juncus bufonius var. congestus Vernon Oswald 1983-6-7 648 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC111388  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  JEPS103414  Juncus capitatus Lowell Ahart 2002-4-24 9535 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC34176  Juncus ensifolius L. Ahart 1981-9-15 3157 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  JEPS114775  Juncus ensifolius Lowell Ahart 2008-7-23 15142 Butte on the N side of the South Fork of the Feather River, about 10 yds W of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mi W of the Ponderosa Dam 258 Comment
  CHSC39402  Juncus howellii L. Ahart 1983-8-16 4314 Butte In a small meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. On bottom of small stream. 1600 Comment
  CHSC116642  Juncus kelloggii Lowell Ahart 2016-4-15 20750 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
  CHSC47556  Juncus leiospermus Lowell Ahart 1979-4-30 1854 Butte On the top of Table Mountain, near the large parking area, south-east side of the road, about 7 miles north of Oroville. 396 Comment
  CHSC47558  Juncus leiospermus Lowell Ahart 1979-5-29 1895 Butte East of Kunkle Creek, near a large lava rock with Indian Mills, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 457 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
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  CHSC29733  Juncus leiospermus var. leiospermus J. D. Jokerst 1980-4-17 594 Butte In the bottoms of vernal pools below the high water mark. Top of North Table Mt. 441 Comment
  UC398899  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte above Jonesville (near Butte Creek House) 1750 Comment
  JEPS96003  Juncus oxymeris Vernon H. Oswald and Lowell Ahart 1996-5-27 7659 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (s side of levee road at sw corner of Tract 3.4, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC57213  Juncus parryi L. P. Janeway 1987-7-5 2455 Butte At end of old logging road east of the Concow Road and 1.0 mi southwest of Jones Meadow. At granite outcroppings overlooking Balsam and Big Kimshew Creeks. 1798 Comment
  CHSC96916  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville. 680 Comment
  JEPS115909  Juncus patens Lowell Ahart 2009-7-9 16004 Butte On the east side of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  JEPS113275  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  CHSC111633  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands. 830 Comment
  CHSC99819  Juncus trilocularis Lowell Ahart 2008-6-13 14814 Butte Bottom of a small mined wash, about 50 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 324 Comment
  CDA30217  Juncus usitatus L. Ahart 2009-7-4 15999 Butte On the side of a large shalow 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 Comment
  JEPS113747  Juncus usitatus Lowell Ahart 2007-7-11 14291 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
  CAS-BOT-BC80921  Juniperus californica Arthur Menzies 1969-8-1 s.n. Butte Near Gillem's Bluff, Little Butte Creek, Nelson West Rd & Chico-Butte City Hwy. Comment
  POM14660  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  CHSC37067  Keckiella lemmonii L. Ahart 1982-9-29 3841 Butte Along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi ne of Strawberry Valley. 1200 Comment
  SEINET12765113  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table mountain, about 8 miles (air) northeast of Stirling City.; 0 1372 Comment
  CHSC26685  Kelloggia galioides M. S. Taylor; R. A. Schlising, M. Hayes 1977-8-17 1484 Butte At Butte-Tehama County line, ca. 100 ft W of Old Humboldt Rd, on Butte side. 2133 Comment
  LA208506  Kelloggia galioides E. B. Copeland; 1930-8-10 Butte Jonesville 1550.0 Comment
  UCSB63914  Kelloggia galioides Ahart, Lowell 1997-8-1 Butte T24N, R5E, northwest 1/4 Section 18; , on the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City; Yellow Pine Forest 1432 Comment
  CDA6295  Kickxia elatine L. Ahart 2002-10-17 9993 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  UCR219110  Kickxia elatine George K. Helmkamp, E. A. Helmkamp 2009-9-5 15596 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  SEINET10582525  Kickxia elatine Mary Susan Taylor 1978-9-8 Taylor 1895 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  CHSC42372  Koeleria phleoides Lowell Ahart 1987-5-6 5557 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC77164  Kumlienia hystricula Vernon H. Oswald 2000-3-4 9884 Butte Hwy. 70 in Feather River Canyon 0.5 mi south of Cresta Rest Area. Along this section of highway. 464 Comment
  CHSC75309  Kyllinga brevifolia Lowell Ahart 1999-5-24 8082 Butte Along the steps on the south side of the building, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  JEPS115280  Lactuca saligna Lowell Ahart 2008-11-4 15400 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
  CAS-BOT-BC340528  Lactuca serriola Lowell Ahart 1987-8-3 5843 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC30655  Lagophylla glandulosa M. S. Taylor 1980-7-5 3058 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 299, ca. 8 mi n of Chico. 67 Comment
  OBI15967  Lagophylla glandulosa Robert F. Hoover 1965-10-16 9719 Butte Deer Crk rd E of Chico Comment
  RSA755344  Lagophylla glandulosa L. Ahart 2009-7-9 16002 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC341310  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  CAS-BOT-BC271247  Lamarckia aurea Lowell Ahart 1980-3-23 2050 Butte West Branch Bridge, Highway 70 Comment
  CHSC28915  Lamium amplexicaule M. S. Taylor 1980-3-1 2329 Butte West end on n side of Neal Rd, ca 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC3268  Lamium amplexicaule M. L. Hillier 1966-3-14 2 Butte In orchard on n. side of Hwy. 32, 1 mile e. of Hamilton City. Comment
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC101984  Lasthenia fremontii Linda Osborne 1980-4-10 3 Butte Chico. Ca. 100 m SE of Notre Dame Blvd., 200 m NE of Skyway. Comment
  CHSC111382  Lasthenia fremontii Lowell Ahart 2012-5-2 17963 Butte In a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 89 Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  UCD133733  Lasthenia fremontii Sue Wagener 1955-4-24 51 Butte junction of U.S. Highway 99E and the Paradise Durham Road (around 2 miles southeast of Chico). Comment
  RSA715918  Lasthenia gracilis L. P. Janeway 2005-3-10 8352 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  HSC38105  Lasthenia gracilis Thomas W. Nelson, Jane P. Nelson 1976-5-9 2451 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  UCD73064  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  SEINET10451847  Lathyrus jepsonii subsp. californicus Mary Susan Taylor 1978-7-21 Taylor 1833 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  UCD106258  Lathyrus jepsonii var. californicus A. A. Heller 1914-5-1 11345 Butte Chico-Hamilton road 6 miles from Chico. Comment
  CAS-BOT-BC213285  Lathyrus sulphureus Lowell Ahart 1987-5-11 5621 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  JEPS117248  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  CHSC10618  Layia fremontii Lowell Ahart 1970-4-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS107861  Layia fremontii Lowell Ahart 2005-5-11 11801 Butte Margins of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  SEINET10474772  Layia fremontii Mary Susan Taylor 1973-1 Taylor 1 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC1609053  Ledum glandulosum Lowell Ahart 1993-7-29 7132 Butte about 1 1/2 mi se of Bald Mountain (on n side of dirt road to Big Kimshew Creek, ne of Stirling City) 1493 Comment
  CHSC109775  Lemna minuta Lowell Ahart 2012-10-20 18491 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS127248  Lemna minuta Lowell Ahart 2016-9-4 21341 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC108760  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-7 10367 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  JEPS117216  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-5-16 16700 Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  JEPS119756  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  SBBG126097  Leontodon saxatilis subsp. longirostris L. Ahart 2012-6-2 18131 Butte Truex Rd, W of intersection of Truex Rd and Trevor Rd, ca 1/8 mi NW of W Branch Bridge across Lake Oroville 286 Comment
  CAS-BOT-BC215733  Lepechinia calycina L. P. Janeway 1989-5-29 6305 Butte Ca 200 ft. above Honey Run Road, 2.6 mi from Humbug Road, along dirt road/firebreak along powerline (3-wire, wooden pole) 274 Comment
  CAS-BOT-BC215737  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte 5.6 mi. SW of Forest Ranch 548 Comment
  RSA755760  Lepechinia calycina L. Ahart 2009-5-23 15759 Butte East side of Guardians Trail, about 150 yards southwest of the Ten Mile House Road, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  JEPS87616  Lepidium latifolium Lowell Ahart 1994-9-26 7548 Butte about 1.5 mi n and 1 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  CHSC10677  Lepidium nitidum Lowell Ahart 1961-2-26 Butte Salmon Hole, Chico. 91 Comment
  CAS-BOT-BC89879  Lepidium nitidum A. A. Heller 1919-3-29 13096 Butte Cherokee mine. Comment
  UCSB64000  Lepidium nitidum Fillinger, Jennifer 1991-4-2 Butte North Table Mountain; 6 mi. N of Oroville; W of Table Mountain-Cherokee Rd.; 40 yds. W of N Table Mt. gate 243 Comment
  UCR237305  Lepidium nitidum var. nitidum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18756 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  UCD115856  Lepidium pinnatifidum L. Ahart 1982-7-10 3664 Butte Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC106603  Lepidium strictum L. P. Janeway 2011-4-13 10233 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) 59 Comment
  CHSC58260  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte On the top of Oroville Dam, near the south side of the spillway on Oroville Dam. 274 Comment
  CHSC40675  Leptosiphon bolanderi J. D. Jokerst 1984-4-6 1963 Butte Just north of Kunkle Resv ca. 1/2 mile, south of Lago Vista Rd ca 1/2 mile. Comment
  CHSC90798  Leptosiphon ciliatus Lowell Ahart 2005-5-2 11765 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC38597  Leptosiphon filipes Vernon Oswald 1983-5-7 442 Butte Upper Bidwell Park, Chico, on the north rim at the head of the east tributary of Sycamore Creek. 365 Comment
  POM219474  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. 1500 Comment
  CAS-BOT-BC341788  Lessingia nemaclada John Thomas Howell 1967-6-22 42606 Butte Magalia 701 Comment
  CDA8196  Lessingia nemaclada L. Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. Comment
  UCD69222  Lessingia nemaclada D. Sanchez-Mata; P. Rodriguez-Rojo, D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 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
  UC368031  Lessingia virgata John B. Leiberg 1900-9-28 5375 Butte 10 mi e Oroville; Buffalo Ranch 609 Comment
  CHSC3315  Leucojum aestivum M. Gregg 1966-3-13 42 Butte CSC campus. Behind dining hall, Chico. Comment
  HSC73015  Leucothoe davisiae M. S. Taylor, L. Ahart 1981-8-15 4179 Butte Both sides of the Skyway, 1.8mi. S of Inskip 1250 Comment
  CAS-BOT-BC444184  Lewisia nevadensis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows 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
  CHSC42591  Ligusticum grayi Vernon Oswald 1985-6-20 1858 Butte Near Humbug Rd. at the n end of Snag Lake. 1706 Comment
  CAS-BOT-BC509475  Lilium kelleyanum E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  CHSC50980  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-19 1083 Butte Ca 2.6 km e. of the crossing of Coon Hollow Road at Coon Hollow Creek (W. Branch Feather R.). Comment
  UC436287  Lilium washingtonianum subsp. washingtonianum E. B. Copeland Jul 1930 Butte Jonesville 1600 Comment
  JEPS19590  Limnanthes alba Harry A. Dutton 1921-4-25 Butte sw Oroville Comment
  CHSC2388  Limnanthes alba subsp. versicolor R. Carter 1965-4-12 178 Butte Found 7.5 mi. E of Oroville, 20 yds. from gate at end of Feathervale on N side of road. 274 Comment
  RSA435677  Limnanthes douglasii subsp. douglasii H. L. Mason 1941-4-6 12415 Butte Hills west of Cherokee. Comment
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  JEPS119683  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  POM282578  Limnanthes douglasii subsp. rosea J. W. Morrison 1928-05 s.n. Butte Oroville, Sierra Nevada Mt. Range, Feather River. 305 Comment
  CHSC67542  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3238 Butte Doe Mill population N of Warfield Rd., E of Bruce Rd., W of Butte Creek Diversion Channel. On young fan deposits of Little Chico Creek. 76 Comment
  UC971797  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1256 Butte 9 mi nw Oroville (on n side of Oroville-Chico road) Comment
  CHSC67560  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3045 Butte Ca. 150 m W of Cohasset Rd. ca. 1/6 mi S of junction with Keefer Rd. Comment
  SEINET12332636  Linanthus filipes S. S. Khan 1988-1 43 Butte North Table Mountains, ca 100 yds W of Table Mountain-Cherokee Rd, ca 6 mi N of Oroville 244 Comment
  CHSC27988  Linanthus pungens M. S. Taylor 1978-7-18 1699 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC92457  Linaria dalmatica subsp. dalmatica Lowell Ahart 2005-11-12 12484 Butte Flat area on the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CHSC113360  Lindernia dubia var. anagallidea Lowell Ahart 2014-4-25 19400 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  JEPS104373  Lindernia dubia var. anagallidea Lowell Ahart 2003-6-23 10305 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC112204  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, southwest of the dredge pond, west of the barn, about 3 1/4 miles (air) northeast of Honcut. 45 Comment
  JEPS120945  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, SW of the dredge pond, W of the barn, about 3.25 air miles NE of Honcut. Comment
  CHSC45179  Lipocarpha Lowell Ahart 1973-6-28 259 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
  CHSC76428  Lipocarpha micrantha Lowell Ahart 1999-10-28 8301 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC96951  Lipocarpha micrantha Lowell Ahart 2007-7-8 14273 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
  RSA0106687  Lipocarpha micrantha Lowell Ahart 2013-11-13 19239 Butte Below high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC110975  Liquidambar styraciflua Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte Lawn, on the northeast side of Sycamore Pool, Lower Bidwell Park Chico. 61 Comment
  SEINET10533521  Liquidambar styraciflua Mary Susan Taylor 1975-5-6 Taylor 563 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC100799  Listera convallarioides R. A. Schlising; R. Banchero 1980-7-7 3847 Butte NE of village of Feather Falls, 2.2 mi N of Lumpkin-LaPorte Road, on road to Fall River Campground; shady roadside seep. 1051 Comment
  UC398906  Listera convallarioides E. B. Copeland 1929-7-15 355 Butte Jonesville 1500 Comment
  CHSC44087  Lithocarpus densiflorus L. P. Janeway 1987-6-26 2301 Butte On Granite Ridge, along Concow Rd. 2.0 mi N of Rag Dump. 1295 Comment
  CHSC30731  Lithocarpus densiflorus var. echinoides M. S. Taylor 1980-5-27 2642 Butte On trail from parking lot to Big Bald Rck, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC103667  Lithophragma bolanderi Lowell Ahart 2010-4-30 16603 Butte Steep north slope, below rim and above cliffs, on the north 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
  SFV10398  Lithophragma bolanderi M. L. Vincent 1964-4-9 540 Butte 1.5 miles from Alternate Route 40, north on Pentz Road. Comment
  CHSC25354  Lithophragma campanulatum Marc P. Hayes 1977-4-22 12 Butte Ca. .5 km sw of Heinz Creek, along small creek, ca. 200 m from its confluence and North Fork of Feather River. 450 Comment
  CAS-BOT-BC438122  Lithophragma parviflorum Gladys Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CHSC29225  Lithophragma parviflorum var. trifoliatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2435 Butte SE corner of jct of Rcky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Banger Hwy, ca. 10 mi s of Oroville. 365 Comment
  CHSC65435  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1988-3-22 3261 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 60 Comment
  CHSC50423  Lithophragma tenellum Vernon Oswald 1990-6-14 4298 Butte Jones Meadow-Lotts Lake Rd (T-Line), ca. 2 miles southwest of Lotts Lake, at the meadow near the headwaters of Kimshew Creek. 1905 Comment
  CAS-BOT-BC342385  Logfia gallica A. A. Heller 1914-6-2 11148 Butte Hills 8 miles north of Oroville Comment
  CHSC29762  Lolium multiflorum J. D. Jokerst 1980-4-21 629 Butte Along edges of vernal streams flowing into Coal Cr. Top of North Table Mt, N of Cherokee Rd. 381 Comment
  RSA755351  Lolium perenne subsp. multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CAS-BOT-BC271206  Lolium temulentum Lowell Ahart 1980-5-10 2230 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC26811  Lomatium marginatum M. S. Taylor 1978-5-6 1597 Butte Magalia. 609 Comment
  CHSC46110  Lomatium marginatum J. D. Jokerst 1980-6-8 811 Butte Ca 220 meters ENE of the junction of the Skyway and Coultelenc Rd. Magalia Serpentine. Comment
  SD116547  Lomatium tomentosum Barbara Ertter, Jeffery Strachan and Lowell Ahart 1980-5-8 3317 Butte North Honcut Creek on Peter Ahart Ranch around 2I(c) miles northeast of Honcut between Marysville and Oroville 45 Comment
  CHSC38741  Lomatium utriculatum Vernon Oswald 1983-4-14 488 Butte Upper Bidwell Park, Chico, on the north rim ca. 3000 ft e of the power lines. 316 Comment
  CHSC94926  Lomatium utriculatum K. Lang; Classmates 2005-3-1 Butte Table Mountain. Comment
  UCD80006  Lomatium utriculatum CNPS SN Foothill Team 2005-5-4 SNFN 0201 c Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, on an east-facing slope. The plot location is ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  CHSC116577  Lonicera hispidula L. P. Janeway 2015-6-17 11780 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lower Forbestown Road 0.15 km north of Ponderosa Way; 0.7 air-kim west-southwest of Sunset Hill. West-facing slope above the road. 815 Comment
  CHSC54337  Lonicera hispidula Lowell Ahart 1991-6-22 6664 Butte West of Springtown Road, near Lake Oroville. 304 Comment
  SEINET10972049  Lonicera hispidula var. vacillans Mary Susan Taylor 1979-10-5 Taylor 2238 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
  CHSC2406  Lonicera interrupta R. Carter 1964-5-27 105 Butte 8 mi. E of Oroville, 200 yds. up Wakefield Dr. off Feathervale on N side of road. 121 Comment
  SEINET10970287  Lotus Mary Susan Taylor 1982-6-24 Taylor 4734 A Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CHSC42558  Lotus corniculatus Lowell Ahart 1987-5-12 5624 Butte Along Lumpkin Road, about 1 mile west of Feather Falls. 914 Comment
  JEPS114734  Lotus humistratus Lowell Ahart 2008-5-12 14755 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
  JEPS98454  Lotus humistratus Lowell Ahart 2000-5-31 8424 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  UC204729  Lotus humistratus A. A. Heller 1914-5-8 11377 Butte the Clear Creek to Paradise grade Comment
  UC80703  Lotus humistratus Mrs. R. M. Austin May 1883 46 Butte near Chico Comment
  CDA27215  Lotus incanus Sterling O. Mattoon, J. Harroun 1971-5-27 Butte Along driveway into property, James Knibbs property, Skyway, Stirling City. 0 Comment
  SEINET10906968  Lotus micranthus Mary Susan Taylor 1978-5-6 Taylor 1589 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  RSA303524  Lotus unifoliolatus James R. Shevock 1972-5-19 1766 Butte Hwy 70, N of Oroville. 183 Comment
  CHSC25320  Ludwigia peploides subsp. peploides Hayes; Warner, Schlising 1977-8-23 46 Butte Found in canal at Gray Lodge State Wildlife Refuge. 50 Comment
  UCD66034  Ludwigia peploides subsp. peploides B. J. Grewell; R. McKee 2006-8-17 06- 42 -LU Butte Gray Lodge Wildlife Area north of Sutter Buttes. 21 Comment
  JEPS113455  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River 486 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
  SEINET10452617  Lupinus albifrons Mary Susan Taylor 1981-4-5 Taylor 3489 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  CAS-BOT-BC196250  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  HSC71549  Lupinus bicolor J. P. Smith 1973-3-22 5913 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA304385  Lupinus bicolor Barbara Ertter, Jeffrey Strachan, Lowell Ahart 1980-5-7 3306 Butte North Table Mountain ca 5 air miles north of Oroville. 396 Comment
  SEINET5328105  Lupinus bicolor B. Ertter, J. L. Strachan, L. Ahart 1980-5-7 3306 Butte North Table Mountain ca 5 air-miles north of Oroville. T20N R4E S17SE1/4 396 Comment
  UCD107158  Lupinus bicolor J. Doty 1969-4-1 621 Butte on east side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  UCD107191  Lupinus bicolor A. A. Heller 1914-2-2 11166 Butte Canon hf Big Chico creek 6 miles east of Chico. Comment
  CHSC924  Lupinus bicolor var. tridentatus P. Delaplane 1965-4-6 29 Butte Fairly abundant along side of Cohasset Rd. 3/4 mi above turnoff to Richardson Springs Rd. Chico. 243 Comment
  CHSC93459  Lupinus bicolor var. tridentatus Lowell Ahart 2006-5-8 12595 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  HSC38055  Lupinus densiflorus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2463 Butte Beside SR 191 just N of its junction with SR 70 Comment
  HSC23347  Lupinus densiflorus var. aureus Carolyn Fante 1971-4-13 4 Butte N side Pentz-Magalia Hwy. 165 Comment
  JEPS113885  Lupinus grayi L. P. Janeway 2007-7-2 9078 Butte Northern High Sierra Nevada; Plumas National Forest; along the road to Cascade 1.2 road km N-NW of its crossing of Fall River; 0.3 air km E of the confluence of Dark Canyon at Fall River 1067 Comment
  SEINET10483996  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. 853 Comment
  CHSC88969  Lupinus microcarpus var. densiflorus Christine Hantelman 2000-4-27 82 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 Comment
  CDA13344  Lupinus nanus G. F. Hrusa, T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada; along Hwy 162. Near entrance to Rogers Cow Camp. Comment
  CHSC40601  Lupinus pachylobus J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1962 Butte Common on open annual grasslands north of Kunkle Reservoir, e of Pentz Rd., s of Paradise. 457 Comment
  JEPS104131  Lupinus pachylobus Lowell Ahart 2003-4-8 10043 Butte About 40 yd and in the small canyon w of the tall Digger Pine on the south side of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 314 Comment
  CAS-BOT-BC8228  Lupinus pennellianus Amos Arthur Heller 1940-6-5 15705 Butte Along the Feather River Higway between Arch Rock Tunnel and Pulga Comment
  NY15975  Lupinus pennellianus A. A. Heller 1940-6-5 15705 Butte Along the Feather River Highway between Arch Rock tunnel and Pulga. Transition Life Zone. Comment
  UC129305  Lupinus stiversii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  HSC23497  Lupinus vallicola L. E. Dunkel 1965-3-2 2 Butte .5 mi. SW of Municipal Golf Course building, Chico 61 Comment
  RSA43304  Lupinus vallicola subsp. vallicola W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  SEINET10490995  Lupinus vallicola subsp. vallicola A. Arthur Heller 1938-4-23 Heller 15046 Butte Plentiful on a grassy slope in the quercus douglasii belt near the bridge over The feather river on hwy 24 e of oroville. Upper sonoran life zone. 91 Comment
  CHSC31951  Luzula cascadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-7-16 848 Butte Chico Meadows, Scout Rd 1.1 miles N of its jct with the Skyway and Humboldt Rd. 1341 Comment
  JEPS87449  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  CHSC33727  Luzula comosa var. subsessilis M. S. Taylor 1981-3-12 3398 Butte Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. 883 Comment
  CHSC7189  Luzula comosa var. subsessilis H. Alger 1969-2-23 2 Butte 10 ft. s of Helltown Rd., 0.8 mi n of Centerville. 243 Comment
  CHSC103804  Luzula macrantha Peter F. Zika 2009-6-17 24513 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CAS-BOT-BC441210  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 s.n. ( 4091 ?) Butte About 2 mi. E of Bidwell Bar Bridge Comment
  SBBG128085  Lychnis coronaria L. Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, bottom of an old gold mined area, ca. 400 yards SW of the cemetery, ca. 10 mi NE of Oroville 305 Comment
  UCD124964  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 air miles north of Oroville. 403 Comment
  SEINET10452837  Lythrum californicum Mary Susan Taylor 1978-9-8 Taylor 1904 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC1029  Lythrum hyssopifolia V. Holt 1935-5-28 Butte Butte Creek canyon. 91 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
  JEPS87380  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte about 2.25 mi n and 0.25 mi e Honcut (about 12 mi s of Oroville) 33 Comment
  RSA0015861  Lythrum hyssopifolia L. S. Rose 1967-6-11 67102 Butte Oroville. 52 Comment
  JEPS95946  Lythrum tribracteatum Lowell Ahart 1999-5-21 8073 Butte on the east side of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UCD80097  Madia citriodora CNPS SN Foothill Team 2005-5-5 SNFN 0158 d Butte City of Chico, Upper Bidwell Park, off of Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road. 233 Comment
  JEPS87530  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10474299  Madia elegans Mary Susan Taylor 1977-11-12 Taylor 1541 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC44374  Madia exigua Lowell Ahart 1988-6-23 6068 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  RSA0117082  Madia exigua Lowell A. Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  SFV11421  Madia exigua M. L. Vincent 1963-6-10 419 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  CAS-BOT-BC342969  Madia gracilis John Thomas Howell 1962-6-15 37479 Butte Magalia 731 Comment
  RSA0035822  Madia rammii Lowell A. Ahart 2008-6-13 14823 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC345239  Madia subspicata Lewis S. Rose 1945-5-12 45018 Butte Richardson Springs 304 Comment
  CHSC2307  Maianthemum racemosum F. Hedglin 1954-5-30 Butte Rag Dump 5, near Stirling. 1097 Comment
  CHSC27984  Maianthemum racemosum M. S. Taylor 1978-7-18 1700 Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  CHSC62530  Malacothrix floccifera B. Castro 1993-7-27 486 Butte Ca 3 mi NW of Brush Creek, along USFS Rd 22N34 as it parallels French Creek, ca 0.5 mi SW of the low-water crossing at the confluence of French and Peavine Creeks. 618 Comment
  CHSC87889  Malacothrix floccifera Lowell Ahart 2004-6-22 11113 Butte Road cut, on the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  JEPS106172  Malacothrix floccifera Lowell Ahart 2004-6-22 11113 Butte Road cut, on the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CHSC43733  Malus sylvestris Vernon Oswald 1987-4-21 2337 Butte Hwy 32 just n of the 37.0 mi road marker, ca. 1 mi s of Lomo. On the edge of the road. 1158 Comment
  JEPS119994  Malva parviflora Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17915 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  UC452592  Marah fabacea Mrs. R. M. Austin May 1883 126 Butte Chico Creek Comment
  CHSC46937  Marah watsonii Robert A. Schlising 1963-6-7 2620 Butte Cohasset; roadside. Comment
  CHSC51058  Marah watsonii Pauleen Broyles 1987-4-29 1014 Butte The Nature Conservancy Vina Plains Preserve. Comment
  CHSC87455  Marah watsonii R. D. Fischer 2004-3-20 89 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail below bluffs of Disk Golf Course. 396 Comment
  CHSC19932  Marrubium vulgare M. S. Taylor 1975-2-16 386 Butte Abundant ca. 2 mi s of Concow Reservoir on Jordan Hill Rd. Comment
  CHSC3276  Marrubium vulgare M. L. Hillier 1966-5-7 Butte Along rd. side about 3 miles n.e. of the Skyway on Humbug rd. Comment
  CHSC21052  Marsilea vestita M. S. Taylor 1975-10-4 958 Butte On e edge of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  HSC36095  Marsilea vestita George L. Williams 1962-4-12 Butte Oroville Comment
  CDA42742  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC348087  Matricaria discoidea Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC348266  Matricaria occidentalis Lowell Ahart 1982-4-29 3392 Butte A little west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC422645  Meconella californica A. A. Heller 1921-3-27 13535 Butte Near the Butte Creek bridge on the Honey Run road. Comment
  CDA27613  Medicago intertexta P. B. Kennedy 1916-1 Butte Chico. 0 Comment
  CHSC31835  Medicago lupulina L. Ahart 1977-6-3 1408 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38517  Medicago polymorpha Vernon Oswald 1983-4-4 261 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.0 mi e of the power lines. 335 Comment
  CHSC46104  Medicago polymorpha J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1542 Butte Grey Lodge Waterfoul Management Area along Rutheford Rd. where it turns 90 degrees to the north. Comment
  JEPS115301  Medicago polymorpha Lowell Ahart 2009-5-8 15662 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC39594  Medicago praecox Lowell Ahart 1983-4-10 3924 Butte On a steep sidehill, about 1 1/2 miles northeast of Highway 99 and Pentz Road. 100 Comment
  CAS-BOT-BC47739  Melia azedarach John Thomas Howell 1961-9-22 36739 Butte Feather River, Oroville 53 Comment
  CHSC61542  Melica aristata Lowell Ahart 1993-6-26 7022 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 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
  CHSC2164  Melica californica var. nevadensis H. Silberman; D. Isaac 1949-5-17 Butte S side of Big Chico Creek canyon, 7 mi. ENE Chico. 243 Comment
  RSA500431  Melica geyeri Vernon H. Oswald 1989-5-28 3787 Butte Logging road paralleling the west side of Butte Creek, 3.1 miles south of Humboldt Road (near Butte Meadows). 1293 Comment
  CHSC101462  Melica harfordii L. P. Janeway; Sarah Starkey 2009-7-13 9857 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  JEPS113283  Melica torreyana Lowell Ahart 2007-4-16 13674 Butte On the west side fo North Honcut Creek, 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
  CHSC107573  Melilotus indicus Lowell Ahart 2011-8-17 17620 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 209 Comment
  SEINET10870000  Melissa officinalis Mary Susan Taylor 1977-7-15 Taylor 1415 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  SEINET10498889  Mentha arvensis var. villosa Mary Susan Taylor 1977-11-12 Taylor 1530 Butte Devil's Kitchen area, on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC89463  Mentha canadensis R. D. Fischer 2004-7-21 450 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10-Mile House Road near end of park property. In mdw along drainage, between road and Big Chico Creek. 216 Comment
  CHSC116316  Mentha pulegium Lowell Ahart 2015-11-18 20661 Butte Marsh like area, 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
  CHSC78254  Mentha pulegium Lowell Ahart 2000-7-17 8593 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  RSA724861  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy. 162. 41 Comment
  CHSC21248  Mentha spicata M. S. Taylor 1975-10-31 981 Butte Along creek, ca. 50 yds n of Pentz Rd, in Butte College Campus, ca. 12 mi s of Chico. 91 Comment
  CDA5706  Mentha spicata var. spicata L. Ahart 2000-8-3 8675 Butte About 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  RSA716403  Mentha spicata var. spicata L. Ahart 2005-8-19 12334 Butte East side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 50 Comment
  CHSC1021  Mentzelia laevicaulis R. M. Staley 1952-7-16 Butte Along Skyway. 365 Comment
  UC177575  Mertensia ciliata H. M. Hall 1914-7-25 9784 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  CHSC101092  Micranthes integrifolia Lowell Ahart; John Dittes 2009-3-20 15510 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
  CHSC1678  Micranthes integrifolia V. Holt 1935-3-30 Butte Chico Creek ridge. 304 Comment
  UCD102846  Micranthes nidifica L. Ahart 1974-3-8 308 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44236  Micranthes odontoloma V. Oswald; L. Ahart 1988-7-13 3588 Butte Road to High Lakes e of Philbrook Reservoir. Along the n edge of Philbrook Creek s of the road. 1828 Comment
  CHSC25283  Micranthes oregana M. S. Taylor 1977-7-15 1406 Butte In ne corner of Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  CAS-BOT-BC348317  Micropus californicus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET10871998  Micropus californicus Mary Susan Taylor 1974-4-20 Taylor 185 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  POM183423  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC43704  Microsteris gracilis Vernon Oswald 1983-6-22 734 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humbolt Rd. to Butte Meadows. 1158 Comment
  SD4012  Microsteris gracilis E. B. Copeland 1931-6-29 Butte Jonesville. In sandy open spaces by Butte Creek. 1500 Comment
  SEINET10570221  Mimulus douglasii Mary Susan Taylor 1979-3-31 Taylor 1973 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  JEPS5545  Mimulus glaucescens R. F. Hoover 1937-5-18 2235 Butte 3 mi n Chico Comment
  JEPS79788  Mimulus glaucescens Robert F. Hoover 1938-4-24 3248 Butte 3 mi n of Chico Comment
  UC196162  Mimulus glaucescens A. A. Heller 1914-4-29 11340 Butte 8 mi s Vina; Pine Creek Comment
  CHSC118885  Mimulus guttatus Christopher T. Ivey 2017-5-27 386 Butte Centerville Road, at intersection with Willow Springs Road. In wet ditch by mailboxes. 126 Comment
  JEPS114732  Mimulus guttatus Lowell Ahart 2008-5-12 14737 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA0119046  Mimulus guttatus Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  UC103777  Mimulus kelloggii Mrs. R. M. Austin May 1896 157 Butte Iron Canyon Comment
  CDA13309  Mimulus moschatus G. F. Hrusa, T. D. Wilfred 1996-7-9 13155 Butte Sierra Nevada; Jordan Creek on W side of bridge over Marble Creek on USFS N60. Comment
  POM308489  Mimulus moschatus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3082 Butte Feather River Hwy. Comment
  JEPS108746  Minuartia californica Lowell Ahart 2006-4-28 12550 Butte About 50 yards north of the rim of Beatson Hollow, about 120 yards south of the poor dirt road, about 1/8 mile southeast of the reservoir, about 2 1/8 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 mil 299 Comment
  UCD73014  Minuartia californica Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  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
  UCD80210  Minuartia californica CNPS SN Foothill Team 2005-4-5 SNFN 0096 b Butte CDFG North Table Mountain Wildlife Area. Plot is located on top of Table Mountain between the north fork and south fork of the northernmost canyon of Table Mountain. 370 Comment
  UCR227349  Minuartia californica Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 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
  JEPS110247  Minuartia cismontana Lowell Ahart 2006-5-3 12556 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  CHSC75488  Minuartia douglasii G. F. Hrusa; T. D. Wilfred 1997-5-7 13721 Butte Sierra Nevada. Serpentine outcrop on SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10537577  Minuartia pusilla Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5241 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
  CDA3374  Mollugo verticillata L. Ahart 1998-7-1 8029 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC13711  Mollugo verticillata M. S. Taylor 1974-10-11 331 Butte On rocky sand bar on Sacramento River, ca. 1/4 mi n of washout, on River Rd, ca. 10 mi w of Chico. Comment
  CAS-BOT-BC435070  Mollugo verticillata Lowell Ahart 1984-8-19 4787 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville 40 Comment
  SEINET10498923  Monardella lanceolata Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4255 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET10582062  Monardella lanceolata A. Graff 1993-7-23 Graff 342 Butte Plumas National Forest. Hwy. 70, 2 miles past Arch Rock Tunnel, on left roadside. T23N,R5E,S14. Small, dense population growing in granitic soil in the understory of Abies concolor, Umbellularia californica, Quercus kelloggii, Q. chrysolepis, Platanus racemosa. End of bloom. Comment
  SEINET10928168  Monardella lanceolata A. Graff 1993-7-23 Graff 341 Butte Plumas National Forest. Hwy. 70, 2 miles past Arch Rock Tunnel, on left roadside. T23N,R5E,S14. Small, dense population growing in granitic soil in the understory of Abies concolor, Umbellularia californica, Quercus kelloggii, Q. chrysolepis, Platanus racemosa. End of bloom. Comment
  SEINET12331805  Monardella lanceolata Unknown 1984-1 4662 Butte Along Ponderosa Way, ca 1/8mi W of Ponderosa Dam, ca 2mi NW of Forbestown, Yellow Pine Forest 370 Comment
  RSA500423  Monardella lanceolata var. lanceolata Vernon H. Oswald 1989-6-8 3801 Butte Truex Rd just n of the Hwy 70 bridge over the North Fork of the Feather River 335 Comment
  JEPS110081  Monardella odoratissima subsp. glauca Lowell Ahart 2006-7-16 12960 Butte Near the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  UC1124558  Monardella odoratissima subsp. glauca P. L. Johannsen 1936-7-16 923 Butte 1 3/4 mi E.S.E of Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle Comment
  JEPS87151  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte About 1 mile east of the Carr Mine, about 1/2 mile northwest of Lotts Lake. 1828 Comment
  CAS-BOT-BC220455  Monardella sheltonii Clarence R. Quick 1952-7-1 52 -129 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC39669  Monardella sheltonii Lowell Ahart 1983-6-21 4083 Butte Along Bloomer Hill Rd., about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC43035  Monardella sheltonii L. P. Janeway 1987-6-8 2179 Butte 4.5 mi south of Big Bar Mtn (via rd). 899 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
  CHSC86435  Monardella sheltonii Jenny Marr 1994-6-13 83 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  UCD125266  Monardella venosa James D. Jokerst 1992-5-19 3355 Butte Unmaned canyon north of Nugen Canyon on the south side of Neal Road, near the Butte County Sanitary Landfill. 76 Comment
  CAS-BOT-BC444883  Montia fontana John Thomas Howell 1976-4-1 51532 Butte Table Mountain, 4 to 5 miles north of Oroville 304 Comment
  CHSC102477  Morus alba L. P. Janeway 2009-10-13 9951 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south side of Big Chico Creek along South Rim Trail/Annie Bidwell Trail/Guardian Trail 275 m west of the high power lines. 109 Comment
  RSA0119326  Muhlenbergia andina Lowell A. Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA725281  Muhlenbergia andina L. Ahart 2006-8-15 13174 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
  CHSC64259  Muhlenbergia filiformis S. C. Morey 1983-8-1 650 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. Meadow. 1292 Comment
  UC398891  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte above Jonesville (bank of pond) 1750 Comment
  CHSC38835  Muhlenbergia rigens Vernon Oswald 1982-10-22 2 Butte Bidwell Park, Chico. Seep near Diversion Dam ca. 50 ft s of Upper Park Rd ca. 3.1 mi east of its junction with Wildwood Ave. 121 Comment
  CAS-BOT-BC83268  Myosurus minimus Lowell Ahart 1985-4-21 4880 Butte Near Wyandotte Creek, south of Central House Road, northwest of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC10543  Myosurus minimus Lowell Ahart 1971-4-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC66354  Myosurus minimus M. S. Taylor, J. D. Jokerst 1980-3-28 2397 Butte E of Chico, NE corner of Notre Dame Blvd. and the Skyway, 1/8th mi. E of Hwy. 99 69 Comment
  CHSC58675  Myosurus minimus subsp. minimus M. Bailey 1991-4-21 Butte Bottom of drainages, Butte Community College campus. Drainages located atop a ridge north of Wallis Ponds and east of Williams Road, ca 1/4 mi north of Pentz Road. 121 Comment
  JEPS87462  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  CHSC46875  Myriophyllum spicatum Vernon Oswald 1989-9-6 3986 Butte West end of West Liberty Rd along the n boundary of Gray Lodge Wildlife Area. 19 Comment
  SEINET3890285  Najas graminea Herbert L. Mason, Verne E. Grant 1946-8-15 13047 Butte Near caretaker's house, Greylodge Game Refuge.; 0 Comment
  SEINET12332633  Nama lobbii L. P. Janeway, Schlising, R. A. 1988-1 2919 Butte S-facing cutbank of dirt road just NW of Summit Lake 1951 Comment
  CHSC42813  Narthecium californicum L. P. Janeway 1987-6-27 2363 Butte On east slope of Bald Mtn, along the Concow Rd. 1706 Comment
  CHSC45350  Navarretia capillaris Vernon Oswald; Lowell Ahart 1987-7-1 3049 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  UC1609052  Navarretia divaricata Lowell Ahart 1993-7-29 7125 Butte 6.5 mi ne Stirling City (2.5 mi ne of Bald Mountain, .12 mi n of the Snow Mine, on the e side of an old water ditch for gold mining) 1676 Comment
  CHSC91457  Navarretia filicaulis Lowell Ahart 2005-7-12 12135 Butte Road cut bank, on the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  JEPS115870  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  SD7459  Navarretia filicaulis Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  JEPS107895  Navarretia heterandra Lowell Ahart 2005-5-28 11824 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 67 Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 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
  RSA715672  Navarretia heterandra L. Ahart 2005-5-27 11812 Butte About 50 yards northwest of the tower, Peter Ahart Ranch, about 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 43 Comment
  CHSC39514  Navarretia intertexta Lowell Ahart 1983-6-12 4038 Butte In a meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  UC392180  Navarretia intertexta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  SD120581  Navarretia leucocephala B. Ertter, Jeff Strachan 1980-5-5 3256 Butte Peter Ahart Ranch ca 1.5 mi northeast of Honcut between Oroville and Marysville, pasture north of house 29 Comment
  JEPS117326  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
  CAS-BOT-BC233618  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte Near Pents 152 Comment
  POM65860  Navarretia pubescens A. A. Heller, H. E. Brown 1902-5-14 5547 Butte Berry Canyon (near Clear Creek) Comment
  SEINET10496835  Navarretia pubescens Mary Susan Taylor 1980-5-31 Taylor 2758 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
  CHSC30076  Navarretia squarrosa R. A. Schlising 1980-7-26 3921 Butte At Concow Reservoir, along Concow Road, 3.0 mi N of junction with Nelson Bar Road at Concow School. Roadside. 615 Comment
  CHSC97363  Navarretia tagetina Paul Maslin 2005-5-1 56 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10619770E 4410043N. 243 Comment
  RSA717292  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  CHSC27501  Navarretia viscidula subsp. purpurea Robert A. Schlising 1978-5-29 3283 Butte Bidwell Park, Chico, near the end of paved road at golf course and old rifle range. Comment
  SEINET10461216  Nemacladus interior Lowell Ahart 1984-6-8 Ahart 4669 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC109101  Nemophila heterophylla Lowell Ahart 2012-3-23 17783 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  UC726902  Nemophila heterophylla A. A. Heller 1938-3-27 15004 Butte Cohasset Road 121 Comment
  SEINET10497054  Nemophila heterophylla Mary Susan Taylor 1979-5-4 Taylor 1994 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
  UC107227  Nemophila menziesii H. E. Brown Mar 3 1897-Mar 23 1897 252 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  POM73919  Nemophila menziesii var. menziesii C. C. Bruce 1898-05 s.n. Butte [No location information on label.] Comment
  CHSC703  Nemophila spatulata P. Delaplane 1965-5-4 55 Butte In meadow ca. 4-5 mi N of Lake Concow on W side of Forest Road # 24N05. 914 Comment
  CHSC105957  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC46801  Nuphar lutea subsp. polysepala R. A. Schlising; P. Broyles 1986-8-5 4500 Butte NE of Snag Lake, and to W of Old Butte Creek House; small lake. 1822 Comment
  CAS-BOT-BC400069  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CHSC26644  Nymphaea odorata M. S. Taylor 1977-9-10 1517 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  CDA3527  Nymphaea odorata G. D. Barbe 1975-6-4 2031 Butte Between Nelson West Road and Pacific Gas & Electric reservoir, 1/4 mile east of Chico/Butte City Highway. 0 Comment
  UCD137747  Nymphaea odorata G. Douglas Barbe 1975-6-4 2030 Butte between Nelson West Road and Pacific Gas and Electric reservoir, 1/4 mile east of Chico/Butte City Highway. Comment
  CHSC2840  Odontostomum hartwegii David Prall 1965-4-25 27 Butte N side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  POM195804  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 miles N of Chico, on the Richardson Springs road. Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  JEPS104025  Orobanche uniflora var. uniflora Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CAS-BOT-BC457670  Orthilia secunda H. F. Copeland 1920-8-29 153 Butte Jonesville woods 1219 Comment
  RSA176419  Orthocarpus campestris A. A. Heller 1927-4-25 14349 Butte Near the 'Y' along the state highway between Oroville and Richvale. This station is not many miles from where Hartweg collected the type. Comment
  SEINET10549653  Orthocarpus campestris Mary Susan Taylor 1978-5-7 Taylor 1603 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10964395  Orthocarpus erianthus Mary Susan Taylor 1980-3-28 Taylor 2410 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  SEINET10549690  Orthocarpus lacerus Mary Susan Taylor 1980-5-15 Taylor 2624 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET10549691  Orthocarpus lacerus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5393 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CAS-BOT-BC6993  Orthocarpus lithospermoides var. bicolor Amos Arthur Heller; H. E. Brown 1902-5-10 5519 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET12332662  Orthocarpus purpurascens Unknown 1988-1 9 Butte North Table Mtn., Cherokee Rd ca 6 mi N of Oroville 244 Comment
  CAS-BOT-BC242648  Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station Comment
  CHSC54296  Osmorhiza brachypoda Vernon H. Oswald; Lowell Ahart 1991-6-5 4651 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. 762 Comment
  CHSC27915  Osmorhiza chilensis M. S. Taylor 1978-7-19 1733 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jomesville. 1524 Comment
  UCSB36279  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte collected in a ditch between Service Road 33 and Service Road 34 at Lattermore portion of California Rice Experiment Station, between Briggs and Richvale Lattermore, Briggs and Richvale Comment
  RSA289967  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte Lattemore portion of California Rice Experiment Station, between Biggs and Richvale. Comment
  CHSC11039  Oxalis corniculata Lowell Ahart 1969-5-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC27246  Oxalis pes-caprae P. Moyer 1972-3-4 104 Butte CSUC campus. Building K lawn. 60 Comment
  UC195451  Oxypolis occidentalis A. A. Heller 1914-8-6 11641 Butte Chico Meadows Sierra Nevada Comment
  SEINET10454540  Oxypolis occidentalis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4193 Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  CHSC11831  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  UC768483  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC83016  Panicum capillare Lowell Ahart 2002-10-17 9999 Butte 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
  RSA726556  Panicum capillare L. Ahart 2007-10-31 14513 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  CHSC97686  Panicum dichotomiflorum Lowell Ahart 2007-11-3 14562 Butte Along a very small stream, 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
  JEPS88223  Panicum dichotomiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7755 Butte in US Fish & Wildlife parcel between 7 Mile Lane and Sacramento River, in NE corner of Tract 7.2, Sanctuary I Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UCD38753  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte 5 miles NW of Biggs, Biggs Rice Experiment Station. Comment
  CHSC51293  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC94975  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1 1/2 mile north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CAS-BOT-BC253852  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the S edge of Pentz Road, about 1 mile E of Highway 99 60 Comment
  UC925410  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (along U.S. Highway #99E, in hills about Chico); U.S. Highway #99E 60 Comment
  CDA25372  Parvisedum pumilum L. Heinricks 1967-5-1 Butte Highway 99 where it crosses the red hills south of Butte Creek, southeast of Chico. 0 Comment
  CDA34641  Paspalum dilatatum L. Ahart 2009-6-3 15969 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC43276  Paspalum dilatatum Lowell Ahart 1987-8-30 5859 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
  JEPS98522  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  CAS-BOT-BC202814  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville 853 Comment
  CHSC39228  Paxistima myrsinites M. S. Taylor; K. Tharp 1983-3-11 5224 Butte Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 975 Comment
  CHSC39613  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown. 450 Comment
  CHSC43749  Pectiantia breweri Vernon Oswald 1987-6-29 3038 Butte Jones Meadow Rd. e of Inskip, 0.1 mi e of the intersection of the last section of road to Jones meadow. 1734 Comment
  UC1609216  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte 3.5 air mi s Thermalito (s of the Feather Rv, Oroville Wildlife Area); Oroville Wildlife Area 36 Comment
  CHSC86595  Pectocarya pusilla L. P. Janeway 2003-5-7 7772 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 360 Comment
  JEPS115537  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest 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
  CHSC25329  Pedicularis attollens Hayes; Warner 1977-8-14 38 Butte Marshy meadow along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  CHSC64224  Pedicularis attollens S. C. Morey 1983-7-23 583 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 430 Comment
  UC426966  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville 1550 Comment
  CHSC1842  Pedicularis densiflora R. Carter 1965-3-15 165 Butte Found on bank above road on SE corner of intersection of Oroville-Forbestown Rd. and Swedes Flat Rd. ca. 10.5 mi. E of Oroville. 502 Comment
  CHSC3302  Pedicularis densiflora M. L. Hillier 1966-4-23 Butte Side of rd. In and around the Stirling City area. Comment
  SEINET12318328  Pedicularis densiflora Unknown 1977-1 53 Butte 30 yards to the east side of Vilas rd, around .4 mi NE of jct of Cohasset HWY & Vilas Rd 945 Comment
  SEINET12320799  Pedicularis densiflora T. L. Wood 1974-1 30 Butte 100 yards W of Cohasset HWY, 17 mi E of Chico Airport 232 Comment
  SEINET12326934  Pedicularis densiflora Unknown 1974-1 10 Butte On Cohasset road 2.7 mi N of Monk's Store, Cohasset 856 Comment
  CHSC4051  Pellaea andromedifolia J. W. Cherry 1967-3-23 Butte Along north bank of Big Chico Creek, directly s. of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  JEPS115072  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  SEINET10529788  Pellaea andromedifolia Mary Susan Taylor 1980-3-30 Taylor 2411 Butte Upper Bidwell Park, Chico. 244 Comment
  UC399519  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  SFV64  Pellaea mucronata M. L. Vincent 1961-3-26 7 Butte Sierra Nevada 0.5 miles north of Nelson Bar Road near P. G. & E. power building. Southeast of Paradise 300 Comment
  SEINET10470234  Pellaea mucronata Lowell Ahart 1985-6-17 Ahart 5055 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  SEINET10529804  Pellaea mucronata Mary Susan Taylor 1979-11-15 Taylor 2291 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10529809  Pellaea mucronata Mary Susan Taylor 1980-3-1 Taylor 2347 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET10834166  Pellaea mucronata Mary Susan Taylor 1976-4-24 Taylor 1068 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  SEINET11713847  Pellaea mucronata Unknown 4 s.n. Butte no further locality Comment
  SEINET267156 Image available Pellaea mucronata subsp. mucronata T. A. Ranker, P. G. Trapp 1994-6-17 1623 Butte Pence Road south of Paradise. 395 Comment
  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
  CHSC44772  Penstemon azureus R. Banchero 1980-5-12 153 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  CHSC114692  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Roadside. Comment
  CHSC92734  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 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
  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
  UC426950  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte above Jonesville; above Jonesville 1950 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  HSC66346  Penstemon gracilentus M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3209 Butte Humboldt Peak, on E side 2155 Comment
  SEINET10547997  Penstemon heterophyllus subsp. purdyi Lowell Ahart 1984-6-8 Ahart 4679 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC11092  Penstemon heterophyllus var. purdyi Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  UC454141  Penstemon laetus var. leptosepalus Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC69055  Penstemon newberryi var. newberryi Lowell Ahart 1997-8-1 7792 Butte On a mountain side, east of Little Kimshew Creek, east of Snow Meadow, about 1/4 mile east of Table Mountain , about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC42022  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CAS-BOT-BC239449  Penstemon rydbergii var. oreocharis Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy, Sierra Nevada Mt. Range, Feather River 1828 Comment
  UC122974  Pentagramma pallida Mrs. R. M. Austin May, 1883 84 Butte Iron Canyon above Chico Comment
  JEPS113228  Pentagramma triangularis Lowell Ahart 2007-5-22 13918 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CHSC28988  Pentagramma triangularis subsp. semipallida M. S. Taylor 1980-3-19 2390 Butte Macabes Creek canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CAS-BOT-BC77089  Pentagramma triangularis subsp. triangularis R. A. Emmrich 1975-4-24 46 Butte Ca. 1/2 mi. E of Butte Creek and 1/4 mi. SE of Covered Bridge, 6 mi. ESE of Chico. 128 Comment
  CHSC108170  Perideridia kelloggii L. P. Janeway 2011-8-18 10664 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  JEPS110401  Perideridia lemmonii Lowell Ahart 2006-8-15 13176 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC40242  Perideridia parishii subsp. latifolia Vernon Oswald 1985-6-20 1857 Butte North end of Snag Lake. 1706 Comment
  CHSC40243  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-2 1881 Butte Near the road connecting Humboldt and Humbug Rds. 0.3 mi e of Scotts John Creek. 1737 Comment
  CHSC64034  Perideridia parishii subsp. latifolia S. C. Morey 1983-8-4 708 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-BC413703  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CAS-BOT-BC413707  Persicaria hydropiper Lowell Ahart 1981-9-19 3177 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  UCD99567  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte 8 miles north of Oroville Comment
  CDA42931  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. Comment
  CHSC94595  Persicaria punctata Lowell Ahart 2006-9-11 13291 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
  CHSC37286  Petrorhagia dubia M. S. Taylor 1982-5-2 4382 Butte Along Truex Rd ca. 1/2 mi w of its jct with Hwy 70, ca. 10 air mi n of Oroville. Comment
  HSC32618  Petrorhagia dubia Dave Knorr 1974-4-20 118 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  HSC46448  Petrorhagia dubia J. P. Smith, J. O. Sawyer 1973-4-14 6064 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  CHSC39947  Phacelia cicutaria Lowell Ahart 1984-4-4 4541 Butte Peter Ahart Ranch, ca. 2.5 N and 2.5 E of Honcut. 50 Comment
  SEINET12328343  Phacelia cicutaria Unknown 1984-1 4541 Butte Peter Ahart Ranch, ca 2.5 N and 2.5 E of Honcut 50 Comment
  UC726915  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte on Feather River Hwy 23 mi Oroville Comment
  CHSC27864  Phacelia egena K. Bridwell 1978-4-22 99 Butte Along Richardson Spring Rd, ca. 3 mi ne intersection Cohasset Hwy and Richardson Spring Rd, ca. 7 mi ene Chico. 121 Comment
  CHSC30888  Phacelia egena J. D. Jokerst 1979-4-6 1183 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  CHSC4595  Phacelia egena C. Glascock 1965-4-10 305 Butte 2.5 mi. s on Clark Rd. from its intersection with Pearson Rd., Paradise. Comment
  CHSC39113  Phacelia heterophylla subsp. virgata R. A. Schlising 1984-5-24 4454 Butte Bear Ranch Falls NE of Pulga, off Feather River Canyon. 609 Comment
  CHSC45936  Phacelia heterophylla subsp. virgata Lowell Ahart 1984-7-19 4722 Butte Along a logging road near the dirt road, about 1 1/2 miles southeast of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  CHSC46564  Phacelia heterophylla subsp. virgata V. Oswald; L. Ahart 1989-7-12 3842 Butte Logging road (T-Line) 0.6 mi (air) nnw of Bald Mtn Lookout, ne of Stirling City. 1560 Comment
  UC726923  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte along Feather River Hwy 25 mi from Oroville Comment
  SD4077  Phacelia mutabilis E. B. Copeland 1930-7-13 Butte Jonesville 1550 Comment
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville 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
  CHSC6661  Phalaris caroliniana Marilyn Lee 1968-4-19 141 Butte Table Mt., ca 3/7 mile W. of Cherokee Road. Comment
  CHSC10829  Phalaris paradoxa Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET194972  Philadelphus californicus A. A. Heller 1938-5-30 15130 Butte Near Grizzly Dome tunnel on Highway 24. 610 Comment
  CHSC20894  Philadelphus lewisii M. S. Taylor; R. Schlising 1975-9-19 912 Butte Ca. 1/2 mi n of Magalia, ca. 50 ft e of the Skyway. 609 Comment
  JEPS87406  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC250865  Phleum pratense M. S. Taylor 1978-7-18 1720 Butte On n side of Butte Creek, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground 1524 Comment
  CHSC40293  Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown. 350 Comment
  UC478477  Phlox gracilis E. B. Copeland 1931-6-29 680 Butte Butte Creek Jonesville 1500 Comment
  UC880606  Phlox speciosa Helen M. Edwards Jun 1917 Butte De Sabla Comment
  SJSU7853  Phoradendron bolleanum F. S. Gereb 1968-5-4 88 Butte above Paradise Reservoir, near Paradise 609 Comment
  CDA13911  Phoradendron densum G. F. Hrusa, T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada; Slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC11788  Phoradendron libocedri E. B. Copeland 1931-7-28 627 Butte Jonesville. 1500 Comment
  CAS-BOT-BC141120  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 1977-3-19 s.n. Butte Peter Along North Honcut Creek, about 3 miles NE of Honcut 60 Comment
  CHSC113291  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2014-5-5 19321 Butte About 40 feet north of the northeast corner of Washington Street and Spruce Street, in Gridley. 23 Comment
  JEPS120061  Photinia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17855 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  SEINET12276347  Phyla nodiflora Unknown 1905-1 s.n. Butte near Chico Comment
  CHSC1931  Physalis lancifolia D. Bower 1953-8-13 Butte 4A Llano Seco. Rice fields. Comment
  UC1143157  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  UCD41361  Physalis lancifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 864 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CAS-BOT-BC140564  Physocarpus capitatus S. Bianco 1995-10-28 S. 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  SEINET10970314  Physocarpus capitatus Mary Susan Taylor 1981-5-17 Taylor 3805 Butte T22N R3E ne sec 10, Paradise SE quad. Along creek, Phillips property, 685 Wagstaff, Paradise. Riparian Woodland in Yellow Pine Forest; 1900 ft. 579 Comment
  CHSC40355  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte On dry rocky disturbed soil along a small stream, along La Porte Road about 4 miles north-east of Bangor. 304 Comment
  RSA702777  Phytolacca americana L. Ahart 2004-9-28 11405 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico. 58 Comment
  CHSC103940  Pilularia americana Lowell Ahart 2010-5-22 16712 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC27052  Pilularia americana Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC39546  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  UCSB45758  Pilularia americana Reisentz, Paul 1979-5-13 Butte 1 mi S of Derrick Road from Cherokee Road, 6 mi N on Derrick Road from Table Mnt. Road. Comment
  CAS-BOT-BC76939  Pilularia americana Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo. Pond on west side of the Western Pacific RR 35 Comment
  SEINET10872415  Pilularia americana Lowell Ahart 1984-5-7 Ahart 4588 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
  SEINET10530649  Pinus attenuata Mary Susan Taylor 1981-4-16 Taylor 3548 Butte T21N R5E sw sec 24, Brush Creek quad. Both sides of Rd 21N80, ca. 1 mi NW of its jct with Zink Rd, ca. 1.5 mi NW of Big Bald Rock, ca. 2 air mi E of Lake Madrone. Yellow Pine Forest; 2900 ft. 884 Comment
  CAS-BOT-BC78448  Pinus contorta subsp. murrayana H. F. Copeland 1929-6-11 1238 Butte Jonesville 1524 Comment
  CHSC23635  Pinus contorta subsp. murrayana M. S. Taylor 1976-4-1 1048 Butte 500 m s of Old Humboldt Rd. ca. 1/2 mi w of Butte Creek, Butte Meadows. 1706 Comment
  CHSC3168  Pinus contorta subsp. murrayana Dona Kingsford 1966-3-13 Butte 2 miles from 4th Street entrance to Bidwell Park, Chico. Comment
  UC600582  Pinus contorta subsp. murrayana H. F. Copeland 1931-6-9 Butte Jonesville 1524 Comment
  NY49911  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  RSA5146  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville. 1600 Comment
  RSA323805  Pinus ponderosa K. R. Fechko 1982-4-11 2 Butte North east part of the county, approx. 1.8 miles south of Tehama county line on west side of Cohasset Road. 976 Comment
  MACF019592  Pinus sabiniana Trudy R. Ericson 1975-9-20 411 Butte St. Hwy. 70, 19 mi. east or Oroville, Plumas National Forest 609 Comment
  CHSC69117  Piperia unalascensis Lowell Ahart 1997-8-1 7778 Butte Near some small streamlets of Little Kimshew Creek, in Smow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC40292  Piptatherum miliaceum Ahart; Jokerst 1985-5-10 4965 Butte About 1/4 mile west of a small stream, 1/2 mile south of Box Hall Flat, about 1 mile east of Potter Ravine, about 2 and 3/4 miles north-east of Oroville Dam. 320 Comment
  CHSC43586  Pistacia atlantica Vernon Oswald 1987-4-29 2358 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  RSA20871  Plagiobothrys austiniae C. B. Wolf 1937-3-29 8332 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  JEPS117196  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC29035  Plagiobothrys fulvus var. campestris J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 546 Butte Table Mountain, 100 mets. N. of intersection of Cherokee Rd. and E. edge of section 12. Comment
  SEINET12326939  Plagiobothrys fulvus var. campestris Unknown 1982-1 17 Butte on banks of Singer Ck, ca 1 mi W of Hwy 99 off Haille Rd, ca 12 mi N of Chico 61 Comment
  CHSC46345  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-28 6279 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC71166  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte Edges of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  SD122572  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1984-5-7 4590 Butte 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise. 600 Comment
  UC600448  Plagiobothrys hispidulus E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC35054  Plagiobothrys leptocladus R. Schlising; R. Banchero 1981-4-20 4054 Butte NW of Oroville along Cottonwood Road, ca. 0.4 mile E of jct with Hwy 99. Roadside vernal pools. 41 Comment
  CHSC29278  Plagiobothrys nothofulvus R. A. Schlising 1980-4-7 3558 Butte 2.8 mi E of Bangor Highway on Swedes Flat Road. 365 Comment
  UCD120930  Plagiobothrys nothofulvus Michael A. Vincent; Ethan H. Freid 1998-4-6 8111 Butte Table Mountain. Comment
  CHSC46252  Plagiobothrys shastensis Vernon Oswald 1989-3-30 3728 Butte Upper Bidwell Park, Chico. Along the North Rim Trail between Lookout Point above Horseshoe Lake and the double set of power lines. 182 Comment
  CHSC90483  Plagiobothrys shastensis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  JEPS107359  Plagiobothrys shastensis Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  SEINET5320949  Plagiobothrys stipitatus Unknown 2002-3-27 6156 Butte Chico; At the junction of State Highway 99 and Hamilton Nord Cana Highway, about 8 miles northwest of Chico 40 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
  UCD80160  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-3-31 SNFN 0073 e Butte CDFG North Table Mountain Wildlife Area, located in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  CHSC29276  Plagiobothrys tenellus R. A. Schlising 1980-4-7 3557 Butte 2.8 mi E of Bangor Highway, on Swedes Flat Road. 365 Comment
  CHSC28984  Plantago bigelovii R. A. Schlising 1980-3-23 3522 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC108776  Plantago coronopus L. P. Janeway 2011-4-26 10238 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). 59 Comment
  CHSC24687  Plantago erecta D. Hattem 1976-4-10 18 Butte Ca. 1/2 mi e of e boundary of Upper Bidwell Park, ca. 50 m n of Big Chico Creek, ca. 10.2 mi e of Chico. 335 Comment
  CHSC3962  Plantago erecta E. P. Parreno 1967-3-8 26 Butte Cohasset Road in front of Municipal Airport. Comment
  CHSC52101  Plantago erecta William Nielson 1984-3-28 16 Butte 5 m s of Skyway, ca. 2 km w of jct with Hwy 99. 95 Comment
  UCD124474  Plantago erecta Peter H. Raven 1963-5-8 18365 Butte 5 miles south of Cherokee. Comment
  RSA754384  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yds north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yds east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  CDA31972  Plantago major L. Ahart 2009-7-3 15990 Butte About 60 yards west of Cedar Grove parking area, Lower Bidwell Park, Chico. Comment
  CHSC5991  Plantago major var. scopulorum M. MacArthur 1968-6-12 159 Butte In lawn on SW side of Life Science bld., Chico State College campus. 60 Comment
  SEINET10470058  Platanthera dilatata var. leucostachys Mary Susan Taylor 1978-1 Butte Comment
  SEINET10905394  Plectritis Mary Susan Taylor 1976-4-27 Taylor 1096 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
  UCD80810  Plectritis ciliosa CNPS SN Foothill Team 2005-3-22 SNFN 0063 c Butte CDPR, Oroville State Recreation Area, just south of a state park utility road out to water tanks; this road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  SEINET10464978  Plectritis ciliosa Mary Susan Taylor 1974-3-19 Taylor 85 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CHSC38754  Plectritis macrocera Vernon Oswald 1983-3-5 115 Butte Upper Bidwell Park, on the north rim at a level w of Horseshoe Lake. 128 Comment
  CHSC83967  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CAS-BOT-BC255065  Poa compressa Lowell Ahart 1989-5-28 6286 Butte S of Oregon Gulch Road, about 0.5 miles N of the Cementary, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 Comment
  CDA14181  Poa compressa G. F. Hrusa 1997-5-29 13798 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. rhizomatous perennial in a +- moist, low area near creek. Shaded. Comment
  SEINET10508449  Poa pratensis Lowell Ahart 1983-5-13 Ahart 3985 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  JEPS108569  Poa secunda subsp. secunda L. P. Janeway, J. Tuitele-Lewis, M. Brown, S. Mackey Hillaire 2005-5-10 8386 Butte Northern High Sierra Nevada. Plumas National Forest; southeast-facing slope above North Fork Feather River between Lockerman Creek and Cedar Creek 1116 Comment
  CHSC39500  Poa sierrae Lowell Ahart 1983-5-28 4026 Butte Along the trail to the over-look to Feather Falls, about 2 1/2 miles north of the town of Feather Falls. 600 Comment
  JEPS113263  Poa sierrae Lowell Ahart 2007-5-22 13914 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CHSC14009  Pogogyne zizyphoroides G. Notch 1974-4-16 156 Butte 500 yds e of Cherokee Rd. ca 5.5 mi sw of Cherokee. 373 Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  UCD125428  Pogogyne zizyphoroides W. R. Powell 1968-4-23 1468 Butte 2 miles south-southeast of Oroville. 71 Comment
  SEINET10841183  Poinciana gilliesii Mary Susan Taylor Taylor 778 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  RSA4227  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  JEPS120005  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC46498  Polygala cornuta Lowell Ahart 1989-5-31 6334 Butte On the west side of a small stream, north of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  NY406770  Polygala cornuta A. A. Heller 1914-7-24 11624 Butte Forest Ranch 731.5 Comment
  CAS-BOT-BC167559  Polygala cornuta var. cornuta Lewis S. Rose 1955-6-15 55102 Butte 6 mi. se. of Paradise on Pentz Road 426 Comment
  JEPS115673  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 369 Comment
  RSA754850  Polygala cornuta var. cornuta L. Ahart 2009-5-30 15776 Butte South side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  CHSC41905  Polygonum aviculare Lowell Ahart 1976-9-21 1200 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
  JEPS121981  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC108544  Polygonum aviculare subsp. depressum L. P. Janeway 2011-10-20 10780 Butte Sacramento Valley. South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East park Ave and 0.3 km south of Comanche Creek. 66 Comment
  CHSC44059  Polygonum bidwelliae L. P. Janeway 1988-5-29 2709 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. 579 Comment
  RSA695544  Polygonum bidwelliae L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10217 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1.5 miles east of Manzanita Ave., Chico. 107 Comment
  JEPS113314  Polygonum douglasii subsp. spergulariiforme L. P. Janeway 2006-6-25 8694 Butte Northern High Sierra Nevada. West side of Coutolenc Road about 150 m north of Skyway; at Magalia Serpentine. Comment
  UC1586531  Polygonum hydropiperoides Lowell Ahart 1991-9-14 6716 Butte about 2 mi e Honcut (sides of a large reservoir); Joie Osgood Ranch 45 Comment
  SEINET263346  Polygonum lapathifolium Lowell Ahart 1990-10-3 6613 Butte N side of the East Fork of Canyon Creek below the high water line of Lake Oroville ca 1/8 mi NE of the Canyon Creek br 244 Comment
  CHSC61004  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS108976  Polygonum persicaria Lowell Ahart 2006-9-11 13290 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CAS-BOT-BC419896  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of Philbrook Creek s of the road. 1828 Comment
  JEPS117284  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2010-9-21 17211 Butte Open meadow-like area, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  RSA0035340  Polygonum punctatum Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 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
  SEINET10530407  Polypodium californicum Mary Susan Taylor 1973-1 Taylor 54 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC115494  Polypodium calirhiza L. P. Janeway 2015-11-18 11632 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  JEPS120173  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA715711  Polypodium calirhiza L. Ahart 2005-1-20 11472 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  UCD80677  Polypodium calirhiza CNPS SN Foothill Team 2005-3-30 SNFN 0070 c Butte CDFG North Table Mountain Wildlife Area. This site is in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  CAS-BOT-BC232966  Polypogon australis A. A. Heller 1914-5-19 11419 Butte Hills 8 miles N of Oroville Comment
  UCD90975  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 miles north of Oroville Comment
  CHSC116024  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC35659  Polypogon interruptus R. E. Preston 1982-4-22 247 Butte On n bank of Western Canal, at jct with the Midway, 0.8 mi s of Nelson. 35 Comment
  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
  SEINET10658300  Polypogon maritimus A. Arthur Heller 1914-5-13 Heller s.n. Butte Between Durham and Nelson Comment
  CHSC46106  Polypogon monspeliensis L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1536 Butte Just north of Rutherford Rd. ca 100 met. west of its junction with Pennington Rd. Grey Lodge Waterfowl Management Area. Comment
  JEPS123829  Polypogon monspeliensis Lowell Ahart 2015-4-24 20059 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  UCD136477  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte Sierra Nevada, Plumas National Forest. Immediately above Sucker Creek, 1.5 miles SSE of Feather Falls. 720 Comment
  JEPS124287  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  SBBG119825  Polystichum imbricans subsp. imbricans L. Ahart 2003-7-30 10459 Butte N side of Bald Rock, S side of Bean Crk Rd, ca. 2 air mi SE of Brush Crk 1000 Comment
  CAS-BOT-BC72295  Polystichum imbricans subsp. imbricans Lowell Ahart 1984-5-28 4648 Butte below a dirt road about 1 1/4 miles northeast of the West Branch Bridge, about 2 miles south of Old Yankee Hill 450 Comment
  SEINET9625612 Image available Polystichum munitum E. B. Copeland 1931-6-10 s.n. Butte Ridge west of Willow Creek. Vicinity of Jonesville, Lassen National Forest. 503 Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CHSC51243  Portulaca oleracea Lowell Ahart 1990-7-4 6549 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC97768  Portulaca oleracea Lowell Ahart 2007-11-3 14556 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
  CHSC28622  Potamogeton crispus M. S. Taylor 1979-10-2 2216 Butte On e bank of Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 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
  CDA13900  Potentilla glandulosa subsp. glandulosa G. F. Hrusa, T. D. Wilfred 1997-5-8 13757 Butte Sierra Nevada; Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC45607  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-28 2114 Butte Edge of ridge at Coyote Gap F.S. station. 1325 Comment
  CHSC26856  Potentilla gracilis var. fastigiata M. S. Taylor; M. Hayes 1978-6-24 1666 Butte Meadow, on n side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  UC398922  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CAS-BOT-BC539447  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CDA27702  Prosopis glandulosa var. torreyana L. Ahart, M. G. Womack 2006-8-29 13240 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). Comment
  CHSC28927  Prunella vulgaris var. lanceolata M. S. Taylor 1978-7-21 1819 Butte On s side of Oroville-Quincy Hwy along creek, in a meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CAS-BOT-BC159930  Prunus emarginata A. A. Heller 1915-6-11 11962 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC44347  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap. 609 Comment
  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
  SEINET10483131  Prunus virginiana var. demissa Mary Susan Taylor 1976-4-27 Taylor 1085 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  CAS-BOT-BC356394  Pseudognaphalium beneolens Lowell Ahart 1987-8-30 5866 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  CHSC65682  Pseudognaphalium luteoalbum Vernon H. Oswald 1996-3-22 7256 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CAS-BOT-BC357004  Pseudognaphalium luteoalbum Lowell Ahart 1987-5-6 5500 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC104799  Pseudognaphalium stramineum Lowell Ahart 2010-6-1 16752 Butte On the south side of Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CHSC3905  Pseudotsuga menziesii var. menziesii R. Carter 1966-12-31 500 Butte Found ca. 17 mi. NE Oroville on W side Big Bald Rock along E side Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC6614  Pseudotsuga menziesii var. menziesii M. MacArthur 1968-6-17 302 Butte Parking lot NE of building V, Chico State College campus. 60 Comment
  CHSC29706  Psilocarphus brevissimus var. brevissimus J. D. Jokerst 1980-5-28 790 Butte Top of North Table Mt., S of Cherokee Rd. 403 Comment
  CHSC45895  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1978-5-1 1684 Butte On the bottom of a vernal pool, in a field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC195396  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte 8 mi from Chico (Chico-Oroville road) Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CAS-BOT-BC361853  Psilocarphus oregonus E. B. Copeland 1931-7-20 s.n. Butte Jonesville. Near Butte Creek House 1700 Comment
  CHSC32597  Psilocarphus oregonus J. D. Jokerst; R. A. Schlising, B. Banchero 1980-4-16 843 Butte 0.1 mi W of the jct of Scout Rd, N of Humboldt Rd, community of Butte Meadows. 1341 Comment
  CHSC39509  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  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
  RSA4451  Psilocarphus tenellus var. tenellus E. B. Copeland 1931-7-20 698 Butte Jonesville, near Butte Creek House. 1700 Comment
  CHSC88079  Ptelea crenulata R. D. Fischer 2004-5-2 164 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between old cabin site (picnic table) and the open grassland of the Big Chico Creek canyon bluffs. 403 Comment
  CHSC61646  Pterospora andromedea Lowell Ahart 1993-9-8 7162 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC44111  Purshia tridentata L. P. Janeway; R. A. Schlising 1988-7-22 3041 Butte Saddle between Coon Hollow and Chips Cr, Slope on Chips Cr side. 1905 Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  CHSC27200  Pyrus P. Moyer 1971-2-1 84 Butte CSUC Campus. E face of Bus.-Soc. Sci. Bldg. 60 Comment
  CHSC31720  Quercus L. Ahart 1976-1-9 996 Butte Near North Honcut Creek, ca. 5 of 6 small trees, s ca. 1/2 mi is a very large tree which is ca. 50 ft tall. Ca. 2.5 mi n and 3 mi e of Honcut. 53 Comment
  SEINET10833519  Quercus Mary Susan Taylor 1980-5-15 Taylor 2641 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  JEPS120491  Quercus X morehus B. Castro 2003-9-10 1461 Butte CA 15 mi NE of Oroville, on the slopes over the West Branch Feather River across from the Lime Saddle area. Just below State Recreation Area boundary. Comment
  CDA43369  Quercus berberidifolia D. G. Kelch 2012-9-19 12 .359 Butte 300 m SSW of Forest Ranch E of Oroville along Rte 32. Comment
  CHSC29708  Quercus chrysolepis J. D. Jokerst 1980-4-21 630 Butte Top of North Table Mt., N of Cherokke Rd. 381 Comment
  CHSC3597  Quercus chrysolepis Gerry Carrauthers 1966-3-6 40 Butte Ca. 3 mi N. of city of Paradise near observation point for gold nugget find. Comment
  SEINET10838936  Quercus chrysolepis Mary Susan Taylor 1975-4-25 Taylor 501 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  JEPS117279  Quercus douglasii Lowell Ahart 2010-6-1 16762 Butte On the north side of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico 172 Comment
  CAS-BOT-BC62795  Quercus garryana var. breweri A. A. Heller 1915-4-12 11816 Butte near Cohasset Comment
  CHSC25455  Quercus lobata Hayes; Warner 1977-9-12 105 Butte Growing along Clear Creek on the Butte College Campus near the intersection of Pentz and Clark Rds., ca. 15 mi se of Chico. 82 Comment
  CHSC90929  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCR219104  Quercus lobata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15593 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CHSC26694  Quercus vacciniifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1470 Butte On s side of Humboldt Rd, ca. 3 mi e of its jct with Scott's John Rd, n of Jonesville. 1828 Comment
  UC5674  Quercus wislizeni W. H. Brewer Oct 1862 1473 Butte Table Mountain, near Oroville Comment
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Jan 19 2011
  CAS-BOT-BC186693  Ranunculus John Thomas Howell 1976-4-2 51548 Butte About 2 miles southeast of Chico 60 Comment
  CAS-BOT-BC379115  Ranunculus aquatilis var. diffusus E. B. Copeland 1929-7-28 360 Butte Jonesville 1500 Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  CAS-BOT-BC378956  Ranunculus bonariensis Lowell Ahart 1979-5-20 s.n. Butte 2 mi south of Palermo 35 Comment
  CHSC61609  Ranunculus canus A. A. Heller 1926-3-31 13916 Butte At Nelson, 14 miles south of Chico. Comment
  POM268403  Ranunculus canus Lyman Benson 1935-3-27 6368 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  POM99305  Ranunculus hystriculus C. C. Bruce 1897-02 1891 Butte Little Chico. Comment
  CHSC23718  Ranunculus muricatus M. S. Taylor 1976-3-30 1041 Butte On creek bank, ca. 1/2 mi w of Cherokee Rd, ca. 2 mi ne of Oroville on Table Mountain. 373 Comment
  UCD80710  Ranunculus muricatus CNPS SN Foothill Team 2005-4-14 SNFN 0033 d Butte Rock Ranch (private), in the horse pasture, near the NE corner of the pasture located west of the barn and house; plot is ca. 10 m from corner of pasture fence. 105 Comment
  UC726362  Ranunculus occidentalis A. A. Heller 1919-5-18 13181 Butte between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC23135  Ranunculus occidentalis var. occidentalis M. S. Taylor 1976-2-17 996 Butte Ca. 10 ft s of Big Chico Creek, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC58269  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  JEPS87196  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC43545  Ranunculus sceleratus Lowell Ahart 1982-5-10 3432 Butte In our rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  UCD97314  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CAS-BOT-BC59880  Rhamnus ilicifolia Paul Leskinen 1972-9-9 1420 Butte Highway 155 e. of Glenville. 914 Comment
  CHSC88070  Rhamnus ilicifolia R. D. Fischer 2004-6-6 156 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail just south of the 10 Mile House Road junction. 420 Comment
  UC1121898  Rhamnus ilicifolia J. E. Sowder 1933-7-1 102 Butte Promontory Point Chico Quad. 1005 Comment
  SEINET10870352  Rhamnus ilicifolia Mary Susan Taylor 1979-10-12 Taylor 2241 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC26646  Rhamnus tomentella subsp. tomentella M. S. Taylor 1977-11-10 1514 Butte Small tree, at jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  HSC100784  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte S side of Ten Mile House Rd., Upper Bidwell Park, 1/2 (air) mi. SW of the intersection of Hwy. 32 and Ten Mile House Rd., 10 (air) mi. NE of Chico. 311 Comment
  RSA104165  Rhamnus tomentella subsp. tomentella R. M. Austin 1883-1 s.n. Butte [Unspecified] Comment
  UC870862  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-17 11882 Butte 5 mi e Chico; Canyon of Chico Creek Comment
  CHSC45181  Rhynchospora capitellata Lowell Ahart 1980-7-20 2481 Butte In a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  CAS-BOT-BC111923  Rhynchospora glomerata var. minor Lowell Ahart 1980-9-10 2618 Butte Little Bald Rock. 1100 Comment
  UCR190824  Ribes Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CAS-BOT-BC92267  Ribes amarum A. A. Heller 1938-5-1 15057 Butte Near DeSabla. Comment
  CHSC11907  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow, in the open. 1800 Comment
  SBBG17303  Ribes roezlii M. Vincent 1962-4-15 183 Butte 1 mi S of Stirling City on the Skyway Comment
  SEINET13942865 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
  CAS-BOT-BC74468  Rorippa curvisiliqua A. A. Heller 1914-5-30 11469 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road 6 miles from Chico. Comment
  JEPS120597  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-17 19261 Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  CHSC36686  Rorippa curvisiliqua var. orientalis R. E. Preston; L. E. Preston 1982-7-20 344 Butte Bed of stream; in meadow, ca. 1 mi s of Humbug Summit, ca. 4 1/2 miles ese of Jonesville. 1950 Comment
  CHSC36688  Rorippa curvisiliqua var. orientalis R. E. Preston 1982-7-16 342 Butte Near small stream; ca. 1/2 mi sw of Crane Valley. 1554 Comment
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 Comment
  CHSC42061  Rorippa palustris var. occidentalis Lowell Ahart 1986-11-14 5458 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
  CHSC65584  Rosa bridgesii L. P. Janeway 1995-6-1 4766 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  UC127746  Rosa bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC481514  Rosa bridgesii H. F. Copeland 1931-6-10 Butte rock crest between Willow Creek and Colby Creek; Jonesville Comment
  CHSC33638  Rosa californica M. Merryman; R. A. Schlising 1979-9-23 46 Butte SW of Chico along Ord Ferry Rd, ca. 3.7 mi w of Dayton Four Corners. Just w of the meridian. Field edge at roadside. 35 Comment
  CAS-BOT-BC148123  Rosa gymnocarpa C. R. Quick 1942-8-5 42 -45 Butte Big Bar Mt. east of Pulga 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
  RSA718379  Rosa gymnocarpa L. Ahart 2006-6-24 12856 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  CDA35055  Rosa multiflora L. P. Janeway 2010-4-3 9970 Butte Sacramento Valley; Lower Bidwell Park, Chico; along southeast side of Big Chico Creek about 160 m northeast of intersection of E. 8th Street and El Monte Avenue. Comment
  CAS-BOT-BC148316  Rosa pisocarpa A. A. Heller 1913-6-7 10801 Butte Near Stirling 1074 Comment
  RSA755769  Rosa pisocarpa L. Ahart 2009-5-30 15800 Butte South of a small stream, meadow, 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
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  UC1862496  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  UC1926780 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CDA26286  Rosa woodsii var. ultramontana L. Ahart 2005-7-13 12144 Butte 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. Comment
  SEINET10498793  Rosmarinus officinalis Mary Susan Taylor Taylor 449 Butte Campus of the California State University, Chico. 61 Comment
  CAS-BOT-BC274229  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  CHSC54868  Rotala ramosior Vernon Oswald; Lowell Ahart 1991-8-28 4849 Butte Rice Experiment Station on the south side of Hwy 162, ca. 3.5 miles north-northwest of Biggs. 30 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
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC20552  Rubus armeniacus M. S. Taylor 1975-5-24 771 Butte Lower Bidwell Park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. Comment
  CAS-BOT-BC156612  Rubus bifrons Lowell Ahart 1982-9-29 3835 Butte Near Pinkard Creek, about 1/10 mile north of the Lost Creek Res. Dam, about 2 and 1/10 miles north-west of Strawberry Valley 1100 Comment
  UC203608  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte borders Chico meadows 1219 Comment
  CHSC45815  Rubus laciniatus L. P. Janeway 1987-5-20 2060 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Cr bottom. 457 Comment
  CHSC46046  Rubus parviflorus L. P. Janeway 1987-5-10 2051 Butte At edge of bridge over West Branch Feather River ca 6 mi from Stirling City. 754 Comment
  UCD166759  Rubus praecox Marcel Rejmanek 2016-10-6 2162 a Butte By Richvale East Rd, right before the intersection with Highway 99. 35 Comment
  CAS-BOT-BC158770  Rubus ursinus John Thomas Howell 1975-6-15 51077 Butte Butte Creek near Chico 60 Comment
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  CHSC113447  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 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
  CHSC75394  Rumex acetosella Lowell Ahart 1999-6-12 8090 Butte West of the south part of the dam, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  CDA29951  Rumex conglomeratus L. Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards 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 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
  JEPS124321  Rumex crispus Lowell Ahart 2015-10-20 20574 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC421617  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC97332  Rumex obtusifolius L. P. Janeway 2007-7-30 9146 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1116 Comment
  CAS-BOT-BC434069  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  CHSC35029  Sagina apetala R. A. Schlising 1981-4-6 4017 Butte SW of Oroville along Hwy 70, 0.8 mi N of jct with Cox Lane. Comment
  CHSC116717  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-5-24 20859 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) notheast of Honcut. 44 Comment
  CHSC52011  Sagina saginoides L. P. Janeway 1987-6-20 2271 Butte Along rd to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. Near the river. 1013 Comment
  UC935789  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13040 Butte Butte Sink Comment
  POM181762  Sagittaria latifolia H. F. Copeland 1923-8-14 546 Butte Nelson. 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-BC103452  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750 Comment
  SD926  Salix geyeriana E. B. Copeland 1931-6-10 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  CHSC103000  Salix gooddingii Lowell Ahart 2009-6-3 15827 Butte Meadow, about 50 yards southeast of the gate, about 40 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 257 Comment
  CHSC108966  Salix gooddingii Lowell Ahart 2012-4-3 17803 Butte North bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/4 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CHSC50842  Salix jepsonii Vernon Oswald; Lowell Ahart 1990-7-19 4375 Butte Ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1950 Comment
  CHSC99650  Salix lasiolepis H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte), in natural spring. UTM 10 633982E 4365709N. 217 Comment
  CAS-BOT-BC129579  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10704 Butte Hills, north side of the Feather River above Oroville Comment
  CHSC90635  Salix lucida subsp. lasiandra Lowell Ahart 2005-4-2 11695 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
  POM167251  Salix melanopsis E. B. Copeland 1903-5-28 3278 Butte Chico. Butte Creek. Comment
  CHSC76401  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-10-3 8295 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
  CDA3196  Salsola tragus L. Ahart, Vernon Oswald 1999-10-3 8295 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. Comment
  CAS-BOT-BC221114  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte West slope of the Sierra near Forest Ranch 822 Comment
  CHSC11069  Salvia sonomensis Lowell Ahart 1965-4-15 Butte Robinson Mill Road. 91 Comment
  CHSC792  Salvia sonomensis M. Davidson 1929-5-19 Butte Cohasset road. 457 Comment
  SEINET12320801  Salvia sonomensis M. S. Taylor 1975-1 493 Butte Ca 0.5 mi E of Cohasset Hwy, ca 10 mi N of Chico Comment
  JEPS98675  Sanguisorba annua Lowell Ahart 2000-6-29 8544 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
  UC174161  Sanicula bipinnatifida Mrs. R. M. Austin Apr. 1896 214 Butte Little Chico Creek Comment
  CHSC4149  Sanicula bipinnatifida var. flava R. Carter 1966-4-2 327 Butte Found ca. 7 mi. E of Oroville, ca. 1/8 mi. W of Feathervale at 6120 Woodleaf St. Rt., 50 yds. SW of house. 243 Comment
  POM133553  Sanicula crassicaulis A. A. Heller, H. E. Brown 1902-5-8 5506 Butte Berry Canyon (near Clear Creek) Comment
  CHSC99561  Sanicula tuberosa L. P. Janeway 2008-6-15 9410 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  SEINET10454585  Sanicula tuberosa Mary Susan Taylor 1978-7-19 Taylor 1775 A Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC43274  Saponaria officinalis Lowell Ahart 1987-8-30 5864 Butte On gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS115365  Saponaria officinalis Lowell Ahart 2009-7-9 16018 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 203 Comment
  POM196145  Saxifraga oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 Comment
  CHSC4153  Scandix pecten-veneris R. Carter 1966-4-2 321 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  CHSC4182  Scandix pecten-veneris Kathy Sommarstrom 1967-4-15 30 Butte Found to the right side of Honey Run Rd in front of new bridge next to covered bridge. 76 Comment
  SEINET10467275  Scirpus koilolepis Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4048 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
  CHSC19637  Scribneria bolanderi J. Wheeler 1968-4-19 326 Butte W side of Cherokee Rd. ca. 0.75 mi s of Oregon City Rd., Table Mountain. 548 Comment
  UC887501  Scrophularia californica A. A. Heller 1916-4-13 12322 Butte e Chico (Stilson Canyon) Comment
  CHSC44401  Scutellaria californica Lowell Ahart 1988-6-29 6110 Butte On bridge on Bean Creek Road, where road crosses Bean Creek, about 1/2 mile south-west of Johnson Ranch, about 2 miles south of Little Bald Rock. 609 Comment
  UC398676  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte e of Chico (Big Chico along Chico Creek); Big Chico, Chico Creek Comment
  CHSC63968  Scutellaria tuberosa B. Castro; L. P. Janeway 1994-4-21 511 Butte On Watson Ridge, on S-trending ridge just S of USFS Rd 21N25A. 1054 Comment
  CHSC2185  Secale cereale H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave. at Ceanothus Ave., Chico. 57 Comment
  CHSC75267  Sedella pumila Jennifer Slater 1997-4-6 6 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CAS-BOT-BC416978  Sedella pumila W. J. Follett; E. B. Follett 1963-5-19 s.n. Butte 3.8 mi. W of Paradise on road to Chico Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  SBBG70348  Sedella pumila H. L. Mason 1941-4-6 12409 Butte 3 mi S of Chico near jct of rd to Paradise 91 Comment
  UC306790  Selaginella hansenii Mrs. R. M. Austin May 1883 321 Butte e Chico Comment
  CHSC65799  Selaginella wallacei L. P. Janeway 1994-10-23 4760 Butte On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River. 441 Comment
  SEINET10530446  Selaginella wallacei Mary Susan Taylor 1979-9-28 Taylor 2193 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  NY233356  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CHSC101142  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC71634  Senecio triangularis Vernon H. Oswald; Lowell Ahart 1998-8-11 9464 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. Along the edge of the creek. 1396 Comment
  CDA43075  Senecio vulgaris L. P. Janeway 2011-6-7 10364 Butte Sacramento Valley.; Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC419  Senecio vulgaris M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC65683  Senecio vulgaris Vernon H. Oswald 1996-3-22 7255 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  SEINET10507606  Setaria glauca Lowell Ahart 1990-10-21 Ahart 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. Foothill Woodland (destroyed). T21N R4E NW/S5. 213 Comment
  SBBG128045  Setaria viridis L. Ahart 2010-9-24 17237 Butte irrigated, near the SW edgeof the Golf Course, ca. 10 yards S of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Crk, Bidwell Park 91 Comment
  CHSC44428  Sherardia arvensis Lowell Ahart 1988-6-23 6074 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC70854  Sherardia arvensis Lowell Ahart 1998-4-29 7955 Butte Northeast of the large parking area on North Table Mountain, on the east side of Cherokee Road, about 7 miles north of Oroville. 426 Comment
  HSC32630  Sherardia arvensis Gary S. Lester 1974-4-20 108 Butte Cherokee-Table Mtn. Rd., 1 mi. S of the town of Cherokee 305 Comment
  RSA32820  Sidalcea A. A. Heller 1942-5-27 16479 Butte Clear Creek Schoolhouse, Clark Road. Comment
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. Comment
  SEINET7067152  Sidalcea calycosa A. G. Vestal 1947-4-30 s.n. Butte Lava field on Table Mountain north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 624251mE, 4380083mN. Comment
  CHSC10820  Sidalcea diploscypha Lowell Ahart 1972-5-20 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33519  Sidalcea glaucescens R. A. Schlising; R. Preston, R. Banchero 1981-7-14 4145 Butte NE Butte County, 0.3 mi SW of Humbug Summit. 1981 Comment
  CHSC103746  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC10735  Sidalcea hartwegii Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC11102  Sidalcea hartwegii Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM84284  Sidalcea hartwegii C. C. Bruce 1897-05 1922 Butte [No location information on label.] Comment
  CHSC75385  Sidalcea hirsuta Jennifer Slater 1997-4-27 42 Butte Edge of vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  UC725340  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte 10 mi n of Chico (on U.S. Highway 99E); U.S. Highway 99E Comment
  UC726734  Sidalcea hirsuta A. A. Heller 1939-5-1 15388 Butte Feather River below Stirling (near the Cana Road, border of a pond along U.S. Highway #99E) Comment
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Mar 1 2016
  CHSC11786  Sidalcea oregana E. B. Copeland 1930-7-15 659 Butte Jonesville. 1500 Comment
  SEINET10480014  Sidalcea oregana subsp. spicata Lowell Ahart 1983-8-16 Ahart 4308 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
  CHSC48263  Silene antirrhina Vernon Oswald 1987-5-21 2916 Butte Humboldt Rd. between Lomo and Butte Meadows, 0.6 mi ne of Hwy 32. 1173 Comment
  UC128807  Silene bridgesii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  RSA477839  Silene californica M. Vincent 1962-4-16 198 Butte Pentz Road, small reservoir 1/4 mile off road 5 miles S of Paradise. Comment
  CHSC58899  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CAS-BOT-BC389015  Silene laciniata subsp. californica Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC4022  Silene laciniata subsp. californica J. E. Bowlin 1967-3-18 7 Butte On hillside, ca. 10 feet s of Cohasset Rd. and ca. 1.7 miles ne of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  CHSC84918  Silene laciniata subsp. californica Janice Morris 1995-4-24 90 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  CHSC35041  Silene lemmonii R. A. Schlising; M. S. Taylor 1980-7-5 3837 Butte N part of county, at first crossing of Butte Creek on Humboldt Road N of Butte Meadows. On bank near creek. 1341 Comment
  UC120147  Silene lemmonii unknown Butte Jonesville Comment
  SD779  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville. Common in grassy meadows. 1500 Comment
  UC436312  Smilacina racemosa E. B. Copeland July 1930 Butte Jonesville 1550 Comment
  NY201648  Smilax californica S. Bianco 1995-9-24 1031 Butte Between Ishi Trail and unnamed creek to the S 762 Comment
  CHSC39226  Solanum americanum M. S. Taylor; K. Tharp 1983-3-11 5232 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  UCR88751  Solanum americanum J. T. Howell 1959-9-26 35083 Butte Arch Rock, N Fork Feather River 457 Comment
  SEINET10546505  Solanum nodiflorum Mary Susan Taylor 1975-10-29 Taylor 970 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CDA35762  Solanum rostratum J. R. Keck Jr., L. Adams 1978-10-26 PDR# 330072 Butte Chico; Rancho Llano Seco. 0 Comment
  CHSC1939  Solanum umbelliferum Garnett-Durbrow 1928-3-18 Butte Iron Canyon, Chico Creek. 152 Comment
  CAS-BOT-BC157054  Solanum umbelliferum Mrs. C. C. Bruce 1892-5-1 1872 Butte Unspecified. Comment
  CAS-BOT-BC364938  Solidago velutina subsp. californica Lowell Ahart 1982-9-12 3799 Butte On the high banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC45761  Solidago velutina subsp. californica Steven Triano 1988-9-18 251 Butte Ca 300 ft s of Nopel Avenue 0.4 mi se of its jct. with Hwy 32 in Forest Ranch. 713 Comment
  CHSC89490  Solidago velutina subsp. californica R. D. Fischer 2004-8-22 442 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property and up eastern slope. On hillside above mdw and creek. 304 Comment
  CDA42842  Sonchus oleraceus L. Ahart 2011-6-5 17368 Butte In pots or garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC111368  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. 79 Comment
  SEINET10474014  Sonchus tenerrimus Lowell Ahart 1984-11-1 Ahart 4832 Butte On damp red soil in garden on Peter Ahart Ranch, ca. 1.5 mi N and 1 mi E of Honcut, ca. 12 mi S of Oroville. 50 m elev. 50 Comment
  JEPS124191  Sorbus scopulina Lowell Ahart 2015-10-9 20551 Butte About 100 yards southeast of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  SEINET3825672  Sparganium eurycarpum Herbert L. Mason, Verne Grant 1946-8-14 13016 Butte Canal near big pond on Sacramento Outing Club Butte Sink Comment
  CHSC37437  Spergularia bocconi R. A. Schlising 1982-5-18 4242 Butte Richvale Vernal Pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC390130  Spergularia bocconi Lowell Ahart 1981-5-16 2799 Butte Sutter Buttes Region. Along edge of dirt roads on the Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley 35 Comment
  JEPS114724  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC44426  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock. 762 Comment
  HSC104002  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  SEINET10483626  Spiraea douglasii Lowell Ahart 1983-9-17 Ahart 4440 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  RSA700390  Spiranthes romanzoffiana Lowell A. Ahart 2004-8-2 11325 Butte About 200 yards east of Keyser Creek, on the north side of the dirt county road, about 0.75 mile (air) NE of Oak Point, about 0.5 mile (air) west of Big Kimshew Creek, about 1.75 miles SE of Bald Mountain. 1453 Comment
  UC600632  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC111236  Stachys ajugoides var. rigida B. Castro; L. P. Janeway 2007-8-18 1674 Butte Northern High Sierra Nevada. Ca 10 road mi E of Quincy, along Squirrel Creek and Road 401, 1.2 mi NE of Hwy 70/89 and Williams Loop (railroad). 1267 Comment
  CHSC42980  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2315 Butte SW end of Logue Meadows. 1325 Comment
  POM63408  Stachys rigida subsp. quercetorum A. A. Heller, H. E. Brown 1902-5-9 12251 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC39548  Stachys stricta Lowell Ahart 1983-7-29 4217 Butte About 2 1/2 miles west on Bloomer Hill Road from the Oroville Quincy Highway, about 13 miles north of Oroville. 500 Comment
  CHSC5999  Stellaria media M. MacArthur 1968-6-17 205 Butte In lawn NW side of LS bld., Chico State College campus. 60 Comment
  JEPS116039  Stellaria media Lowell Ahart, John Dittes 2009-3-20 15507 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
  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
  JEPS87499  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  CHSC46826  Stellaria obtusa R. A. Schlising; L. P. Janeway 1988-7-16 4602 Butte N part of county, NE of Butte Meadows and E of Scott John Creek; near Willow Creek. 1554 Comment
  CHSC113245  Stellaria pallida Lowell Ahart 2014-4-20 19386 Butte Base of rim clilffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC46828  Stellaria umbellata R. A. Schlising; L. P. Janeway 1988-7-22 4629 Butte NE of Philbrook Lake in N part of county near Plumas County line. Edge of meadows. 1935 Comment
  CHSC50989  Stephanomeria elata Lowell Ahart 1990-8-15 6592 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  POM219097  Stephanomeria lactucina H. F. Copeland 1928-8-14 393 Butte Jonesville. Comment
  SEINET10474963  Stephanomeria lactucina Lowell Ahart 1983-8-16 Ahart 4307 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  CHSC112780  Stipa lemmonii var. lemmonii Lowell Ahart 2013-5-27 18714 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 731 Comment
  SEINET10508395  Stipa nelsonii Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3522 Butte T22N R4E ne sec 2, Pulga SW quad. S-facing barren serpen- slope ca. 50 ft. up from creek, ca. 1/4 mi n of Pine Cluster Ranch, base of open dry serptentine outcrop between Concow Rd and a large knoll, ca. 6 mi n of Jarbo Gap on Hwy 70; 2400 ft. 721 Comment
  UC1292726  Streptanthus diversifolius Freed W. Hoffman 1951-8-1 3828 Butte 6.2 mi N of Oroville-Chico Hwy on the road to Cherokee Table Mountain Comment
  CAS-BOT-BC87384  Streptanthus longisiliquus A. A. Heller 1914-6-22 11483 Butte Little Summit near Butte Meadows. 1463 Comment
  CHSC54298  Streptanthus polygaloides Vernon H. Oswald; Lowell Ahart 1991-6-5 4648 Butte Dirt road to Minie-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
  HSC96693  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte N High Sierra Nevada, NW side of Rim Rd. (Ponderosa Way) at S end of Rocky Ridge and S end of its serpentine openings 847 Comment
  UC659997  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Magalia Sierra Nevada foothills, South Branch of the Feather River 487 Comment
  CAS-BOT-BC87511  Streptanthus tortuosus Lowell Ahart 1982-6-15 3558 Butte About 1.5 mile east of Camp 18, about 8 miles east of Feather Falls. 1000 Comment
  CHSC36695  Streptanthus tortuosus R. E. Preston 1982-5-19 287 Butte On n side of McCabe's Cr, 100 ft e of Lumpkin Rd, ca. 12 mi e of Oroville. 451 Comment
  SEINET10841529  Streptanthus tortuosus Mary Susan Taylor 1981-5-13 Taylor 3702 Butte T22N R6E sw sec 5, Pulga SE quad. In sandy granite, on ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 mi W of Elks Retreat. 4300 ft. 1310 Comment
  CHSC92582  Streptanthus tortuosus var. orbiculatus L. P. Janeway; Matt Brown 2005-5-17 8391 Butte Northern High Sierra Nevada. Plumas National Forest; opening granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  UC856777  Streptanthus tortuosus var. orbiculatus A. A. Heller 1938-4-14 15031 Butte low rock ledges where shallow ravines cut through the lava rock on flat mt. summit Table Mountain Comment
  CHSC57124  Streptanthus tortuosus var. suffrutescens L. P. Janeway 1991-5-1 3923 Butte Dark Canyon Road ca 1 1/4 mi south of Hwy 70. Road-cut bank. 518 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC36089  Streptopus amplexifolius var. americanus R. A. Schlising; K. Tarp, D. Burk 1982-6-27 4306 Butte SE part of county S of Lost Creek Res. At crossing of Strawberry Valley Creek. 1097 Comment
  CHSC49665  Streptopus amplexifolius var. americanus Vernon Oswald 1987-6-29 3043 Butte High Rock Ravine just upstream from a logging road ca. 1 mi (air) w of Bald Mt. Lookout. 1389 Comment
  SEINET10940277  Styrax officinalis var. californicus Mary Susan Taylor 1976-5-3 Taylor 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; granite dome; with Calocedrus decurrens, Pinus ponderosa. 998 Comment
  SEINET5505734 Image available Styrax officinalis var. californicus Margaret J. Williams, Wayne Roderick 1984-1 84- 23 -2 Butte Feather River Canyon, Hwy. 70, 1.5 mi. west of Poe Power Dam 457 Comment
  UC1490565  Suaeda calceoliformis Lowell Ahart 1981-11-6 3227 Butte about 12 mi sw Gridley (e of Gray Lodge Waterfowl Management Headquarters, w of parking area, about 0.5 mi w of Pennington Road,) 35 Comment
  CHSC45265  Subularia aquatica var. americana V. Oswald; L. Ahart 1988-10-6 3704 Butte Summit Lake located ca. 4 mi (air) se of Jonesville. On the south strand of the lake. 1889 Comment
  CHSC48022  Symphoricarpos albus var. laevigatus Vernon Oswald 1987-5-7 2380 Butte Butte Creek Reserve on the N side of Butte Creek E of the Skyway. 74 Comment
  SEINET10905399  Symphoricarpos rivularis Mary Susan Taylor 1979-10-13 Taylor 2266 Butte T22N R4E se 1/4 sec 5. Riparian Wood land along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 7.1 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 610 Comment
  UC179648  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11655 Butte Butte Meadows, wet meadows Butte Meadows 1219 Comment
  CHSC40561  Symphyotrichum chilense Lowell Ahart 1985-10-12 5197 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  CAS-BOT-BC99040  Symphyotrichum cusickii E. B. Copeland 1930-8-26 487 Butte Jonesville 1500 Comment
  CAS-BOT-BC98059  Symphyotrichum lentum A. A. Heller 1914-9-3 11760 Butte On the Chico-Hamilton Road 6 miles from Chico Comment
  CHSC46610  Symphyotrichum spathulatum var. intermedium Vernon H. Oswald 1989-7-27 3899 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  CHSC69674  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1989-8-29 3973 Butte Butte Creek near its junction with Colby and Willow Creeks, just upstream from the bridge on Humboldt Rd, ca. 1 mi W of Jonesville. 1487 Comment
  CAS-BOT-BC98326  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1981-9-10 3150 Butte Gray Lodge, SW of Gridley. 35 Comment
  CHSC66836  Symphyotrichum subulatum var. parviflorum Vernon H. Oswald 1996-8-29 8246 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 32 Comment
  SEINET10454612  Tauschia kelloggii Mary Susan Taylor 1981-4-8 Taylor 3517 Butte T23N R4E west center sec 36, Pulga SW quad. Open reddish serpentine slope, between Ponderosa Way/Rim Rd and Concow Rd, ca. 1/10 mi s of their jct, ca. 7 mi n of Jarbo Gap on Hwy 70, ca. 22 air mi n of Oroville. 3200 ft. 975 Comment
  UC1348836  Taxus brevifolia R. Cockrell 1938-9-21 8415 Butte Stirling City Comment