Search Results — 2000 specimen records retrieved (1619 records with coordinates)
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(For large data reqests, please contact Jason Alexander, jason_alexander@berkeley.edu.)
 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UCD116173  Abutilon theophrasti P. B. Kennedy 1922-1 s.n. Butte Oroville. Comment
  CAS-BOT-BC330576  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling 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
  JEPS95255  Acer circinatum Steve Edwards 1992-5-17 Butte Vilas Road, 0.9 mi from its junction with Cohasset Road Comment
  POM193371  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville. 2100 Comment
  CAS-BOT-BC331610  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte Along road W of the Poe Power House, E of the North Fork of the Feather River, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC7127  Acer negundo var. californicum Lynn R. Thomas 1969-3-23 15 Butte N bank Big Chico Creek at junction of Stewart and Bidwell Ave., ca. 0.5 mi w of Chico. 60 Comment
  JEPS121910  Achillea millefolium Lowell Ahart 2014-7-16 19684 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC201330  Achillea millefolium A. A. Heller 1917-7-26 12835 Butte open places in the yellow pine forest Butte Meadows 1402 Comment
  SEINET10475101  Achillea millefolium var. californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4225 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
  JEPS110242  Achnatherum lemmonii Lowell Ahart 2006-5-10 12625 Butte Road bank, on the south side of the poor dirt road, Bardees Bar Road, south of the small stream, about 200 yards northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  CAS-BOT-BC210738  Achnatherum nelsonii M. S. Taylor 1982-5-2 4395 Butte N side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  CHSC74035  Achnatherum nelsonii subsp. dorei B. Castro; Linnea Hanson 1996-5-24 665 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  POM196134  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  CAS-BOT-BC216376  Achnatherum occidentale subsp. occidentale Vernon Oswald; Lowell Ahart 1987-8-5 3181 Butte Near Humboldt Peak 2151 Comment
  CHSC39980  Acmispon americanus var. americanus L. Ahart; P. Ahart 1983-7-24 4204 Butte Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 167 Comment
  CHSC872  Acmispon americanus var. americanus D. Crummett 1937-5-27 Butte Paradise Road. 396 Comment
  CHSC97929  Acmispon americanus var. americanus D. G. Kelch 2006-8-2 06 .345 Butte Along Butte Creek, north of Durham-Dayton Hwy. 40 Comment
  UCD103799  Acmispon americanus var. americanus A. A. Heller 1914-8-13 11692 Butte 8 miles north of Oroville. Comment
  CHSC108834  Acmispon brachycarpus 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
  CHSC95207  Acmispon brachycarpus R. D. Fischer 2004-4-14 809 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Humboldt trail adjacent Hwy 32. 426 Comment
  HSC23345  Acmispon micranthus R. N. Bowman 1971-4-16 11 Butte 11.7 mi. E of Hwy. 70 on Pentz Rd. 91 Comment
  CHSC31099  Acmispon parviflorus Diane M. Reilly 1980-4-19 16 Butte Under power lines. Ca. 1/4 mi sw off Big Bend Rd., ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 609 Comment
  CHSC33584  Acmispon parviflorus M. S. Taylor 1981-5-5 3597 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. Comment
  CHSC40418  Acmispon strigosus Lowell Ahart 1985-5-31 5034 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  UCD104482  Acmispon wrangelianus Rimo Bacigalupi; L. R. Heckard 1963-5-14 8857 Butte Along Humbug Road, bottom of Butte Creek Canyon, about 2 miles above and east of its beginning at junction with Paradise Skyway. 91 Comment
  CAS-BOT-BC412868  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville 2100 Comment
  CAS-BOT-BC391597  Actaea rubra Lowell Ahart 1981-9-21 3194 Butte Half a mile north of the Lost Creek Reservoir 1100 Comment
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  UC440495  Adiantum jordanii Mrs. R. M. Austin 1896-5-1 242 Butte bluff of Butte Creek Comment
  SEINET10932926  Adiantum jordanii Mary Susan Taylor 1980-3-1 Taylor 2340 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  SEINET7728134  Adiantum pedatum Unknown 1883-1 Butte Chico Comment
  CAS-BOT-BC110725  Aegilops triuncialis Lowell Ahart 1976-5-2 s.n. Butte Peter Ahart Ranch. Honcut. Comment
  CDA415  Aegilops triuncialis L. 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 of a mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. Comment
  RSA739615  Aegilops triuncialis L. P. Janeway, B. Castro 2007-5-19 8978 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 88 Comment
  CHSC107098  Aesculus californica M. Mitchell 2010-4-12 Butte Green Gate @ Highway 32. 421 Comment
  CHSC99665  Aesculus californica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  POM85637  Aesculus californica Mrs. R. M. Austin 1899-05 s.n. Butte Dead Mans Grade. Comment
  CHSC107074  Agoseris grandiflora var. leptophylla L. P. Janeway 2011-6-29 10406 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC30030  Agoseris heterophylla Lowell Ahart 1980-5-4 2209 Butte Ca. 50 m SW of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi SE of Hurleton. 600 Comment
  RSA32872  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling. 1075 Comment
  JEPS124331  Agrostis avenacea Lowell Ahart 2015-10-20 20564 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC102822  Agrostis exarata Lowell Ahart 2009-6-3 15829 Butte About 55 yards southeast of the gate, about 45 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC84154  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  UC1609262  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek) 1325 Comment
  SEINET10968288  Agrostis exarata Mary Susan Taylor 1978-7-19 Taylor 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC59036  Agrostis exarata var. exarata Lowell Ahart 1992-7-21 6810 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC38780  Agrostis microphylla Vernon Oswald 1983-5-8 457 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  SEINET10507106  Agrostis microphylla Lowell Ahart 1984-5-7 Ahart 4592 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
  CAS-BOT-BC139080  Agrostis pallens Lowell Ahart 1980-7-29 2494 Butte Along Swedes Flat Road. 320 Comment
  CHSC49496  Agrostis scabra Vernon Oswald 1987-8-24 3224 Butte Road between Inskip and Jones Meadow, ca. 1.5 mi (air) w of Jones Meadow. 1706 Comment
  SEINET10790393  Agrostis stolonifera Mary Susan Taylor 1978-7-21 Taylor 1796 Butte Vicinity of Lake Madrone at Oroville-Quincy Hwy turnoff, 10 mi NE of Oroville; Yellow Pine forest. Comment
  SEINET10510739  Agrostis tenuis Lowell Ahart 1988-9-4 Ahart 6179 Butte On damp rocky soil, on the bottom and sides of Big Kimshew Creek, the creek crosses a large meadow. about 1 air mile north-east of Jones Meadow. Uncommon. Mountain meadow in Red Fir Forest. Comment
  CAS-BOT-BC138577  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit east of Jonesville. 2133 Comment
  CHSC94530  Agrostis variabilis Lowell Ahart 2006-8-15 13173 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC78714  Ailanthus altissima L. P. Janeway; B. Castro 2000-5-9 6713 Butte Sacramento Valley. South side of Chico; backyard of house on south side of 19th Street between Park Avenue and Salem Street. 60 Comment
  SEINET10936190  Ailanthus altissima Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4208 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CAS-BOT-BC138424  Aira caryophyllea Lowell Ahart 1980-4-13 2078 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET7067154  Aira caryophyllea A. G. Vestal 1947-4-30 s.n. Butte Along the road to Cherokee. Coordinate datum: NAD27. UTM Zone 10, 626283mE, 4388764mN. Comment
  CAS-BOT-BC138407  Aira caryophyllea var. capillaris Lowell Ahart 1970-4-28 1514 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10869149  Aira elegans Mary Susan Taylor 1980-3-1 Taylor 2351 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
  JEPS104344  Alisma lanceolatum Lowell Ahart 2003-6-23 10303 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC103955  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 429 Comment
  CHSC30980  Allium amplectens M. S. Taylor; R. Schlising, L. Ahart 1980-5-31 2754 Butte Kunkle Reservoir, on e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  CAS-BOT-BC460727  Allium amplectens J. D. Jokerst 1980-5-15 706 Butte Southeast of Cohasset Hwy; On top of Cohasset Ridge. 487 Comment
  SEINET12048523  Allium amplectens P. K. Kirk 1981-1 20 Butte E side of Hwy 99 and 30 m S of its jct with Broyles Rd., 17.6 km N of Chico 60 Comment
  SEINET8533641 Image available Allium amplectens H. E. Brown 1897-1 172 Butte Near Clear Creek Comment
  SEINET10472029  Allium bolanderi Mary Susan Taylor 1982-5-2 Taylor 4391 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC28505  Allium campanulatum M. S. Taylor; J. Jokerst 1979-7-21 2153 Butte On Humboldt Peak, on Humboldt Summit. 2154 Comment
  POM183164  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville. 1524 Comment
  SEINET176932  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CAS-BOT-BC466718  Allium cratericola James Jokerst 1985-3-24 2177 Butte Near Lint Road 471 Comment
  CHSC21270  Allium cratericola M. S. Taylor 1973-4-21 15 Butte Ca. 1/4 mi w of Cherokee Rd, ca. 1 1/2 mi s of Cherokee, on Table Mountain. Comment
  CAS-BOT-BC466719  Allium cratericola Jokerst 1985-3-24 4863 Butte Near Lint Road, north of Yankee Hill. West of Lunt Road and Highway 70 550 Comment
  SEINET10905148  Allium cratericola Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4863 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC115468  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 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
  POM169466  Allium membranaceum Kate Conger s.n. Butte Brush Creek Comment
  SEINET10471986  Allium obtusum Mary Susan Taylor 1980-5-27 Taylor 2695 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
  CDA13893  Allium obtusum var. conspicuum G. F. Hrusa, T. D. Wilfred 1997-5-8 13750 Butte Sierra Nevada; Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CAS-BOT-BC132073  Allium peninsulare var. peninsulare Mrs. J. H. Morrison 1932-5-1 s.n. Butte Near Durham Comment
  UC426899  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville 1500 Comment
  CHSC35098  Allophyllum divaricatum R. A. Schlising 1981-6-13 4079 Butte Pulga, roadside. Comment
  CHSC62573  Allophyllum divaricatum L. P. Janeway 1993-6-10 4379 Butte Plumas National Forest. Southwest side of Watson Ridge, ca 1.5 mi east of Bald Rock Dome. 822 Comment
  CHSC46805  Allophyllum integrifolium R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4652 Butte N part of county, on Snow Mountain ridge. Around seep. 1889 Comment
  UC879964  Allophyllum integrifolium A. A. Heller 1917-7-26 12844 Butte Butte Meadows 1402 Comment
  CHSC99661  Alnus incana subsp. tenuifolia H. Koeth 2007-5-5 Butte Moist seep in Butte Meadows along creek. UTM 10 628108E 4440095N. 1326 Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  CHSC36403  Alopecurus geniculatus J. Boze 1982-5-2 422 Butte In lawn end of Michael Way ca. 1 1/2 mi. E. of Hwy 99 off Eaton Rd. Comment
  CAS-BOT-BC137943  Alopecurus saccatus Lowell Ahart 1980-5-4 2169 Butte Thermalito. 65 Comment
  CHSC42113  Amaranthus albus Lowell Ahart 1986-11-7 5418 Butte In a prune orchard, east of the Feather River and the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC50986  Amaranthus californicus Lowell Ahart 1990-8-15 6577 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UCSB64012  Amaranthus deflexus Ahart, Lowell 1982-7-10 Butte Near a small building in the parking area at the Gray Lodge check in station, about 12 miles south-west of Gridley 30 Comment
  UCD97759  Amaranthus retroflexus A. A. Heller 1915-8-20 12199 Butte 8 miles north of Oroville. Comment
  CHSC76264  Amaranthus rudis Lowell Ahart 1999-9-21 8267 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
  CHSC50790  Ambrosia artemisiifolia Vernon H. Oswald; Lowell Ahart 1990-7-31 4425 Butte Camelot Estates Subdivision on the north side of Concow Reservoir. 621 Comment
  CHSC64064  Ambrosia artemisiifolia B. Castro; L. P. Janeway, M. Halterman, C. Pidgeon 1987-10-17 246 Butte At Graylodge Waterfowl Management Area. Ca 0.25 mi NW of the headquarters. 21 Comment
  CAS-BOT-BC55583  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte Chico-Hamilton road, 6 miles from Chico Comment
  UCD128818  Ambrosia psilostachya G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13076 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 35 Comment
  UC726481  Amelanchier utahensis A. A. Heller 1919-5-17 13156 Butte near Stirling (Feather River); Feather River 975 Comment
  UC1563265  Ammannia coccinea Lowell Ahart 1990-10-5 6632 Butte ca. 3/4 mi. n.w. of Enterprise Bridge across Lake Oroville (ca. 1/8 mi. s.w. of Enterprise Boat Launch Area) 228 Comment
Read comments 1
  CHSC75968  Ammannia robusta Lowell Ahart; Vernon Oswald 1999-8-13 8168 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS87378  Ammannia robusta Lowell Ahart 1993-7-13 7067 Butte ca. 1 1/2 mi. n. & 1 mi. e. Honcut (ca. 12 mi. s. of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 36 Comment
  UC1609217  Amsinckia eastwoodiae David 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
  CHSC42063  Amsinckia intermedia Lowell Ahart 1986-11-7 5430 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  SEINET10497096  Amsinckia intermedia Mary Susan Taylor 1980-3-1 Taylor 2343 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC172842  Amsinckia menziesii var. menziesii A. A. Heller 1913-4-7 10725 Butte hills 6 mi n Oroville 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
  NY158191  Ancistrocarphus filagineus R. M. Austin 03 1883 s.n. Butte Adobe Flats, Little Chico Comment
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  CHSC48684  Anemone oregana Vernon Oswald 1984-4-16 1156 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. 853 Comment
  CHSC28501  Angelica breweri M. S. Taylor 1979-7-21 2154 Butte Scattered along trail below Humboldt Peak, on Humboldt Summit. 1981 Comment
  CHSC42566  Angelica californica Vernon Oswald 1985-7-15 1902 Butte Ponderosa Way (Rim Rd.) 3.1 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  CHSC107264  Anisocarpus madioides L. P. Janeway 2011-6-27 10403 Butte Northern High Sierra Nevada. East slope of Bloomer Hill, 830 m east-northeast of the top. 732 Comment
  CHSC45695  Anisocarpus madioides Vernon Oswald 1985-6-17 1842 Butte Beside a logging road 0.1 mi e of the trailhead to Feather Falls. 768 Comment
  CAS-BOT-BC137780  Anthoxanthum odoratum Lowell Ahart 1981-7-7 2915 Butte Sierra Nevada. About 1 mile south of the Oroville Forbestown Road on the Hurleton Swedes Flat Road. 600 Comment
  SEINET10832445  Antirrhinum breweri Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4174 Butte T21N R4E ne sec 11. Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  UC196057  Antirrhinum cornutum A. A. Heller 1914-7-31 11562 Butte about 6 mi nw Chico (Sacramento Valley); Sacramento Valley Comment
  CHSC48967  Antirrhinum leptaleum Vernon Oswald 1985-6-26 1868 Butte West side of Forbestown Rd. ca. 200 ft s of Black Bart Rd. 743 Comment
  CHSC25337  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-12 30 Butte 100 m from the intersection of Highway 70 and Pulga Raod. 426 Comment
  CHSC28432  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor 1979-10-5 2230 Butte On se side of Paradise Lake, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CAS-BOT-BC447660  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC12407  Aphanes occidentalis Lowell Ahart 1973-3-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43854  Aphanes occidentalis L. P. Janeway 1988-2-21 2588 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  SD261367  Aphyllon epigalium subsp. epigalium K. D. Cox 1974-6-1 188 Butte Found in yard at 1332 Elliott Rd., Paradise Ca. 609 Comment
  CHSC1172  Aphyllon purpureum R. Carter 1964-4-21 73 Butte Feather R. Canyon, ca. 200 yds. E of Hibbard Cr. on S side of Hwy. 40A. 609 Comment
  CHSC24677  Aphyllon purpureum C. E. Stopher 1976-4-15 22 Butte 1.6 km nw of Forest Ranch. 579 Comment
  CHSC40280  Apocynum androsaemifolium Lowell Ahart 1985-6-17 5047 Butte Along the edge of the dirt road, Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  UC426935  Apocynum androsaemifolium E. B. Copeland 1930-7-7 442 Butte Jonesville 1650 Comment
  CHSC38261  Apocynum cannabinum Vernon Oswald 1983-8-19 1009 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  SEINET10833598  Aquilegia formosa Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4703 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC32828  Arbutus menziesii W. Michael Foster 1981-4-24 10 Butte Along both sides of Hwy 70, ca. 2 mi NW of Jarbo Gap and ca. 20 mi N of Oroville. 609 Comment
  SEINET10492818  Arceuthobium americanum Mary Susan Taylor 1976-5-3 Taylor 1104 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
  UCSC000190  Arceuthobium campylopodum H. F. Copeland 1928-8-29 s.n. Butte the summit of Humboldt Road - neighborhood of Jonesville 2134 Comment
  CAS-BOT-BC409925  Arceuthobium campylopodum Lowell Ahart 1987-9-29 5907 Butte along dirt road that ends at Sugar Pine Point, about 0.5 miles S of Lumpkin Ridge Road, about 1 mile SE of Camp 18 and 7 miles NE of Feather Falls 1280 Comment
  NY8240  Arctostaphylos laxiflora A. A. Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Transition Life Zone. Comment
  RSA632990  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27461 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633010  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27447 Butte East of Chico, Cohasset Road. 170 Comment
  UCD52162  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51103 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 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
  RSA755635  Arctostaphylos manzanita subsp. manzanita L. Ahart, John Dittes, Steve Green 2009-1-17 15468 Butte North side of Humboldt Trail, about 50 yards south of Guardian Rock Trail, Upper Bidwell Park, about 300 yards west of Highway 32. 330 Comment
  RSA31999  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC725915  Arctostaphylos mewukka A. A. Heller 1942-3-22 16407 Butte one mi above Cohassett school house Comment
  UCR198096  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mi northeast of Swain Hill, 1 mi west-southwest of Quartz Hill, 50 ft east of Grubbes Creek Road 1220 Comment
  CAS-BOT-BC38563  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51561 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CHSC108747  Arctostaphylos mewukka subsp. truei B. Castro; L. P. Janeway 2002-7-7 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). 1295 Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  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
  RSA4476  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge east of the Summit' 2100 Comment
  CAS-BOT-BC46720  Arctostaphylos patula M. S. Taylor 1974-3-3 71 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway to Paradise. 76 Comment
  SEINET10449252  Arctostaphylos patula Mary Susan Taylor 1981-5-21 Taylor 3780 Butte T23N R5E nw sec 18, Pulga SW quad. E side of Rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi ne of Magalia. Yellow Pine Forest, on granite soils; 3900 ft. 1189 Comment
  SEINET10874396  Arctostaphylos truei Mary Susan Taylor 1981-3-24 Taylor 3441 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
  UCD52620  Arctostaphylos viscida B. F. Smith 1971-7-20 95 Butte 3.2 miles north of Magalia, Butte County, California. 792 Comment
  UCD52628  Arctostaphylos viscida subsp. mariposa J. I. Mallory 1968-7-1 295 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest, Butte County, California. 640 Comment
  CAS-BOT-BC48283  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-3-27 s.n. Butte Swedes Flat road, near Bangor. 304 Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC137553  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte Between Pentz and Dry Creek. Hills 8 miles north of Oroville. Comment
  CHSC78950  Aristida oligantha Lowell Ahart 2000-9-17 8692 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  JEPS94791  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CHSC108855  Aristolochia californica Lowell Ahart 2012-3-2 17767 Butte On the south side of Guardian trail, about 40 yards southwest of Pine trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico. 361 Comment
  CHSC108862  Aristolochia californica Lowell Ahart 2012-2-22 17756 Butte Climbing on a fence, along the short trail to Ten Miles House Road, about 50 feet from Highway 32, about 9 miles northeast of Chico. 469 Comment
  POM165725  Aristolochia californica E. B. Copeland 1903-4-10 s.n. Butte Chico Comment
  CAS-BOT-BC295836  Arnica dealbata A. A. Heller 1928-6-28 14658 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC41410  Arnica dealbata Lowell Ahart 1986-7-2 5337 Butte In a clear cut, 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
  CHSC51249  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of lake Oroville, about 1/4 mile north east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  RSA718157  Artemisia douglasiana L. Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CAS-BOT-BC400633  Asarum hartwegii A. A. Heller 1915-4-12 11809 Butte Near Cohasset Comment
  RSA718436  Asarum hartwegii L. Ahart 2006-7-11 12941 Butte 50 yards south of Humboldt Road, about 1.5 miles (air) southwest of Butte Meadows. 1436 Comment
  CHSC33286  Asarum lemmonii R. A. Schlising; R. Banchero 1981-6-29 4126 Butte Rag Dump (NW of Pulga, N of Concow Res., E. of Magalia) at Fall Creek. 1158 Comment
  UC166407  Asclepias cordifolia Mrs. R. M. Austin May 1896 287 Butte Little Chico Creek Comment
  CHSC38265  Asclepias speciosa Vernon Oswald. 1983-6-14 682 Butte Upper Bidwell Park, Chico, 100 ft. e of the turn-around at the e end of Upper Park Rd. 207 Comment
  JEPS102321  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte 7 1/2 mi W of Biggs (S side of Biggs - Princeton road, about 1 mi E of Butte Creek) 21 Comment
  JEPS120898  Asclepias speciosa Lowell Ahart 2013-6-11 18799 Butte About 10 yards N of the Forbestown Road, about 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  HSC44928  Asparagus officinalis J. P. Smith, J. O. Sawyer 1973-4-13 6037 Butte Under cultivation at the J.O. Sawyer Sr. residence in Chico Comment
  CHSC33558  Aspidotis californica M. S. Taylor 1981-5-5 3604 Butte On the e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC96824  Aspidotis californica Lowell Ahart 2007-5-22 13917 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  UC123070  Aspidotis californica Mrs. R. M. Austin April 1883 Butte Big Chico Canyon Comment
  CAS-BOT-BC65910  Aspidotis densa H. F. Copeland 1920-8-2 201 Butte near Jonesville 1219 Comment
  CHSC31237  Aspidotis densa M. S. Taylor; R. A. Schlising 1980-7-6 3076 Butte Old s side of Old Humboldt Rd, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC32687  Aspidotis densa M. S. Taylor 1981-3-18 3417 Butte N side of Pulga Rd at jct with Hwy 70 Pulga bridge. 487 Comment
  RSA724874  Aster eatonii L. Ahart 2006-9-9 13246 Butte 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-BC178464  Astragalus gambelianus Lowell Ahart 1989-5-10 6227 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. 280 Comment
  CHSC67362  Astragalus gambelianus James D. Jokerst; R. A. Schlising 1985-4-8 2215 Butte Serpentine Point W and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. In vicinity of highway right of way fence. 548 Comment
  CDA26672  Astragalus gambelianus Sterling O. Mattoon 1971-4-27 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  CHSC2446  Asyneuma prenanthoides R. Carter 1965-7-6 276 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd. on E bank above road. 914 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
  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
  CHSC94559  Athyrium filix-femina var. cyclosorum Lowell Ahart 2006-9-11 13271 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC1586519  Atriplex argentea var. mohavensis Lowell Ahart 1991-9-6 6712 Butte about 10 mi se Gridley (on n side of Rutherford Road, about .12 mi w of Pennington Road, w of Parking Area, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area 30 Comment
  JEPS90671  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road, 100 ft s of Parking Lot 5 on Rutherford Road, 0.5 mi w of Pennington Road); Gray Lodge Wildlife Management Area 21 Comment
  CAS-BOT-BC172670  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley 35 Comment
  CAS-BOT-BC172672  Atriplex lentiformis Lowell Ahart 1987-10-22 5925 Butte About 150 yards west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles south-west of Oroville 38 Comment
  CHSC45553  Atriplex serenana Lowell Ahart 1977-7-24 1493 Butte On the Gray Lodge Waterfowl Management Area, about 12 miles southwest of Gridley. 30 Comment
  CHSC40643  Avena barbata Ahart; Jokerst 1985-3-24 4865 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  JEPS117626  Avena barbata Lowell Ahart 2010-5-23 16727 Butte On both sides of Guardians Trail, about 200 yards southwest of Ten Mile House Road, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 413 Comment
  CHSC46434  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Below the high water line of Lake Oroville, near the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  UCR237332  Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CHSC89489  Baccharis pilularis R. D. Fischer 2004-8-22 441 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. At edge of large mdw. 217 Comment
  CHSC97721  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  UCD19369  Bacopa rotundifolia E. Dean; with J. Ditomaso and E. Healy 2001-8-20 860 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-BC16376  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 southeast of Jarbo Gap. 271 Comment
  CHSC48314  Barbarea orthoceras Vernon Oswald 1984-5-9 1180 Butte Near Camp Lassen, Chico Meadows on Scout Rd ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC34774  Bassia hyssopifolia L. Ahart 1981-11-6 3222 Butte On banks of deep ditch, n side of rd near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC3610  Bellis perennis R. Jaegel 1966-2-15 9 Butte Collected on the front lawn of Chico State College Library; Chico. Comment
  UC2026872  Berberis Lowell Ahart 2012-6-21 18200 Butte On the south side of the paved park road, west of entrance from Woodland Avenue, Lower Bidwell Park, Chico. Comment
  CHSC44474  Berberis aquifolium var. dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 350 Comment
  UC725880  Berberis aquifolium var. repens A. A. Heller 1939-4-8 15365 Butte 2 mi e Magalia (on the Coutolene rd) Comment
  CAS-BOT-BC75952  Berberis pumila A. A. Heller 1939-4-8 15365 Butte About 2 miles east of Magalia on the Coutelene road. Comment
  CHSC83278  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 27 Comment
  CHSC84020  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  SBBG119802  Bergia texana L. Ahart 2006-8-5 13083 Butte Peter Ahart Ranch, ca. 1.5 mi N and 300 yds E of Honcut, ca. 12 mi S of Oroville 30 Comment
  CAS-BOT-BC412957  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville 1550 Comment
  CHSC113483  Bistorta bistortoides Lowell Ahart 2014-7-13 19664 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC23409  Blennosperma nanum M. S. Taylor 1976-3-6 1018 Butte On top of Table Mountain, ca. 50 yds W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  CDA38795  Blennosperma nanum var. nanum L. Ahart 2012-5-4 17988 Butte About 1/4 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  HSC43098  Blennosperma nanum var. nanum Maralyn O'Meara 1974-4-20 302 Butte Table Mtn. 305 Comment
  CHSC41902  Boechera breweri subsp. shastaensis Lowell Ahart 1961-2-26 2 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  SEINET10939932  Boisduvalia densiflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4120 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  RSA0028756  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  CAS-BOT-BC75487  Bolboschoenus glaucus L. H. Cloyd 1940-7-3 3 A Butte Gray Lodge Refuge, 9 miles north of Gridley. Comment
  CHSC63213  Botrychium crenulatum Lowell Ahart 1994-7-24 7516 Butte On the sides of Willow Creek, about 100 yards north of the dirt road, about 1 1/4 miles (air) north of Jonesville. 1615 Comment
  SEINET10971526  Botrychium multifidum subsp. silaifolium Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4462 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  SD9258  Botrychium simplex E. B. Copeland 1931-6-9 Butte Jonesville 1500 Comment
  CHSC48892  Boykinia occidentalis Vernon Oswald 1985-6-17 1839 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CDA1767  Brachypodium distachyon T. C. Fuller 1959-7-6 s.n. Butte Hwy 40A at bridge over the West Branch, Feather River. 0 Comment
  CHSC103158  Brachypodium distachyon Lowell Ahart 2009-6-3 15821 Butte 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. 232 Comment
  RSA739617  Brachypodium distachyon L. P. Janeway, B. Castro 2007-5-19 8980 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 99 Comment
  SEINET10661802  Brachypodium distachyon Lowell Ahart 1987-5-9 Ahart 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 305 Comment
  CHSC31649  Brassica rapa L. Ahart 1978-3-11 1611 Butte In a field. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC3618  Brassica rapa John Francis 1966-2-21 18 Butte Orchard across road from Durham Cemetery. Comment
  CHSC38046  Brassica rapa R. E. Preston 1983-1-9 376 Butte In ditch on w side of Aguas Frias Rd, 1.2 mi n of Ritchvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CAS-BOT-BC106319  Brickellia californica Lowell Ahart 1987-7-3 5762 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  SEINET10971165  Brickellia californica Mary Susan Taylor 1979-9-28 Taylor 2197 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 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
  SEINET10507327  Briza maxima Mary Susan Taylor 1980-5-24 Taylor 2745 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41131  Briza minor Rod Bungay 1978-4-25 15 Butte Ca. 10 ft e of Cohasset Rd ca. 3 mi ne of East Ave. between Chico and Cohasset. 30 Comment
  POM204991  Briza minor A. A. Heller, H. E. Brown 1902-5-6 1439 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC482213  Brodiaea californica subsp. californica Agnes W Purnell 1923-5-1 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  CHSC2075  Brodiaea elegans M. Roberson 1956-5-28 Butte Near Paradise, along Skyway. 426 Comment
  SEINET10872217  Brodiaea elegans Lowell Ahart 1983-6-6 Ahart 4028 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  JEPS50771  Brodiaea elegans subsp. elegans Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9290 Butte about 1 mi n of beginning of grade on Feather River Highway (just e of Messilla Valley) 304 Comment
  UC1442879  Brodiaea nana Theodore F. Niehaus 1966-4-25 655 Butte at junction of Pentz road and Clark road Comment
  CAS-BOT-BC27869  Brodiaea purdyi Carlton Elmer Purdy 1896-1-1 s.n. Butte Hills back of Chico Comment
  CHSC51935  Brodiaea sierrae L. P. Janeway 1987-5-20 2070 Butte Above Hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC74031  Brodiaea sierrae B. Castro 1998-7-28 812 Butte 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. Sunset Hill Meadow. 929 Comment
  CHSC44451  Bromus carinatus Lowell Ahart 1988-6-23 6073 Butte South of the intersection of Black Bart Road and Forbestown Road, about 1 miles west of Robinson Mill Road. 670 Comment
  UC600594  Bromus carinatus var. carinatus H. F. Copeland 1931-6-11 Butte above Kirby Meadows (Jonesville); Jonesville 1981 Comment
  UCD59169  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  JEPS110453  Bromus ciliatus Lowell Ahart 2006-7-16 12975 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
  CAS-BOT-BC155945  Bromus commutatus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile northeast of Forbestown. 792 Comment
  CHSC36546  Bromus hordeaceus L. Ahart 1982-6-4 3549 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC74153  Bromus laevipes B. Castro; E. Hubert 1996-7-16 685 Butte Black Jack Fire. Ca 5 air mi N of Brush Creek, ca 0.4 mi S of Rogers Cow Camp on slope of recently burned area at edge of forest. Near drainage. 1158 Comment
  JEPS106201  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
  RSA591528  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville. 1524 Comment
  CHSC49518  Bromus orcuttianus Vernon Oswald 1983-7-6 807 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. On an old logging road. 1036 Comment
  SEINET10507343  Bromus sterilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4238 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC61366  Bromus vulgaris Lowell Ahart 1993-7-22 7073 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  CAS-BOT-BC438359  Calandrinia ciliata A. A. Heller 1914-4-13 s.n. Butte Hills 8 miles north of Oroville Comment
  RSA521825  Callitriche heterophylla Vernon H. Oswald 1988-5-19 3324 Butte Portion of Rancho Bosquero; 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. 46 Comment
  CHSC40398  Callitriche heterophylla var. bolanderi Ahart; Jokerst 1985-5-10 4946 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC51361  Callitriche heterophylla var. bolanderi V. Oswald; L. Ahart, L. Hanson 1990-8-14 4439 Butte French Creek on the north side of Forest Rd 21N16, ca. 0.75 mile west of the north end of Sly Creek Reservoir. In a pool. 1219 Comment
  JEPS95736  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  UC565379  Calochortus albus Helen Hedges 1937-5-22 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  CAS-BOT-BC487509  Calochortus albus Carl B. Wolf 1937-5-13 8654 Butte Sierra Nevada Foothills, W. side of So. Honcut Creek, 2 6/10 mi. E. of Bangor 213 Comment
  HSC66270  Calochortus albus M. S. Taylor, Jim Jokerst 1980-4-27 2567 Butte S side of Humbug Rd., 0.5 mi. upstream from Honey Run Covered Bridge, 7 mi. E of Chico 137 Comment
  CHSC49643  Calochortus coeruleus Vernon Oswald 1983-6-22 745 Butte Near Humboldt Rd. (to Butte Meadows) 2.1 mi n-e of Calif. Hwy 32. 1310 Comment
  UCD139503  Calochortus coeruleus K. Lui 1998-5-24 24 Butte Lassen National Forest, Pulga, unpaved road 1.5 km south of Poe Dam where State Route 70 crosses North Fork Feather River. 463 Comment
  CAS-BOT-BC489974  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  RSA113891  Calochortus luteus E. K. Balls, Lee W. Lenz 1955-5-13 20482 Butte 3.2 miles north of Oroville on road to Magalia and Paradise 122 Comment
  UC143582  Calochortus luteus Mrs. R. M. Austin May 1896 26 Butte Chico Creek Comment
  CHSC101328  Calochortus monophyllus Lowell Ahart 2009-4-22 15597 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
  CHSC7087  Calochortus monophyllus F. Kimball 1969-4-15 42 Butte 1.5 mi s of Skyway on Foster Rd. 396 Comment
  CHSC90184  Calochortus monophyllus Thomas M. Scott 1989-4-19 9 Butte About 50 m east of Butte Creek at Covered Bridge; 10.2 km east-southeast of Chico. 120 Comment
  UC203547  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte 8 mi from Chico (on the Chico-Centerville road; near Butte Creek) Comment
  CAS-BOT-BC492603  Calochortus monophyllus L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  SEINET10469599  Calochortus monophyllus Mary Susan Taylor 1980-4-18 Taylor 2511 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET12048519  Calochortus monophyllus Unknown 1984-1 5 Butte ca 3 mi E from the jct of Honey Run and Humbug roads, N side of road 305 Comment
  SEINET3885390  Calochortus tolmiei D. W. McNeal 1981-5-10 2485 Butte Above a rd. cut on the rd. from Paradise to Butte Meadows 4.6 mi. n. of the terminous of Hwy. #191 in Paradise.; 0 Comment
  SD1664  Caltha howellii E. B. Copeland June 1930 Butte Jonesville; in meadows by North Willow Creek 1550 Comment
  UC762558  Calycadenia fremontii R. F. Hoover 1937-5-19 2244 Butte 10 mi nw of Chico Comment
  CAS-BOT-BC273289  Calycadenia fremontii G. D. Carr 1971-6-15 561 Butte NE of Chico, 1.6 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), (ca. 4.3 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave) 210 Comment
  CHSC46630  Calycadenia multiglandulosa Lowell Ahart 1989-7-4 6363 Butte Near a mined over area south of Oregon Gulch Road, about 1/4 mile northwest of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UC195401  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte about 5 mi n of, on the Richardson Springs road Chico Comment
  UC1971666  Calycadenia oppositifolia 1977-7-6 2032 Butte just SW of Bloomer Hill Lookout on Encina Grande Road, 4.6 mi from jct with Quincy/Oroville Hwy (very near GDC 699) 831 Comment
  UC1119094  Calycadenia spicata C. G. Albertus 1935-6-15 29 Butte 2 mi w of Themalte; Chico 45 Comment
  CAS-BOT-BC270883  Calycadenia spicata Lowell Ahart 1980-7-4 2447 Butte Thermalito 65 Comment
  CHSC52383  Calycadenia truncata R. L. Ondricek-Fallscheer 1982-10-30 162 Butte SW tip of Flatiron Ridge, ca. 3 1/2 mi WSW of Paradise. 146 Comment
  CAS-BOT-BC90927  Calycanthus occidentalis John Thomas Howell 1961-9-22 36752 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. 106 Comment
  UC854796  Calycanthus occidentalis R. Sprague 1939-5-20 Butte Feather River Comment
  CHSC57127  Calyptridium monospermum L. P. Janeway 1988-6-25 2881 Butte Creek along Bull Hill Road 2.2 mi from the Skyway. Disturbed (logged) slopes above the creek. 1508 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
  CHSC95077  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km north of De Sabla Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek and Hendricks Canal. Along edge of the canal bank. 847 Comment
  RSA718168  Calystegia malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1401 Comment
  CAS-BOT-BC221230  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1982-9-29 3832 Butte At the north end of the Lost Creek Res. Dam, about 2 miles north-west of Strawberry Valley 1100 Comment
  UC600771  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 339 Butte Jonesville woods Jonesville Comment
  CHSC46360  Calystegia occidentalis Lowell Ahart 1989-5-28 6300 Butte On a steep slope 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
  CHSC34976  Calystegia occidentalis subsp. occidentalis R. A. Schlising; L. A. Bellue 1973-6-13 3096 Butte E of Oroville and Forbestown, 0.6 mi SE of jct Forbestown Road and Challenge Cutoff, along the latter. Comment
  CHSC44446  Camassia quamash subsp. breviflora Lowell Ahart 1988-6-15 6038 Butte Small meadow north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  RSA456171  Campanula prenanthoides H. F. Copeland 599 Butte Jonesville. 1524 Comment
  SEINET10939041  Campanula scouleri Hall Hall 9798 Butte NEAR BUTTE MEADOES, ON FLAT IN SHADE OF CEDAR & PINE 1280 Comment
  CHSC34534  Capsella bursa-pastoris R. E. Preston 1982-2-18 172 Butte At base of cliffs, n side of Anderson Fork of Rock Creek. Ca. 7.5 mi nne of downtown Chico. 213 Comment
  CHSC42509  Capsella bursa-pastoris Lowell Ahart 1987-5-6 5510 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC37263  Cardamine breweri H. F. Copeland 1920-5-20 s.n. Butte Jonesville. 1219 Comment
  UCR51788  Cardamine californica H. F. Copeland 1929-5-9 1251 Butte Jonesville 1524 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
  CHSC96240  Cardamine californica var. californica R. Fischer 2006-3-17 983 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 237 Comment
  JEPS105938  Cardamine oligosperma Lowell Ahart 2004-3-26 10704 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville 502 Comment
  SEINET10448554  Cardamine oligosperma Mary Susan Taylor 1975-4-26 Taylor 521 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CAS-BOT-BC38061  Cardamine pachystigma Lowell Ahart 1983-3-28 3906 Butte About 0.5 mile southwest of the Forbestown Reservoir, along the road. About 4 miles northeast of Forbestown. 450 Comment
  CAS-BOT-BC38062  Cardamine pachystigma A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  CHSC92532  Cardamine pachystigma L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-4-26 8369 Butte Northern High Sierra Nevada. Plumas National Forest; Ridgetop between Cirby Creek and Flea Valley Creek drainages; along Concow Road 0.9 road km north-northwest of junction with Rim Road (Ponderosa Way). 1042 Comment
  CHSC103975  Carduus pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC112785  Carex Lowell Ahart 2013-5-27 18710 Butte On both sides of the meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC113410  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC52278  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-22 3068 Butte Upper canyon of Philbrook Cr, 0.7 mi W of the pass. 1889 Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  SEINET10467018  Carex amplifolia Lowell Ahart 1985-6-30 Ahart 5077 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  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
  CHSC84747  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1091 Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  JEPS121965  Carex angustata Lowell Ahart 2014-7-7 19579 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  SEINET10587463  Carex angustata Lawrence P. Janeway, Robert A. Schlising 1988-7-1 Janeway 2926 Butte T26N, R5E, Jonesville quad (15') SE 1/4 od sec. 20. Small shallow lake (leach lake), 1/2 mi W of Butte Creek House. Forming an isolated patch close to the forest bordeing the pond. With C. vesicaria (which is the dominant plant in & next to the lake.) 1814 Comment
  CAS-BOT-BC18055  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. Comment
  SEINET4285994  Carex athrostachya Unknown 2010-1 s.n. Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CHSC42822  Carex aurea L. P. Janeway 1987-6-20 2273 Butte Near Fall River, 3.0 mi north of the Feather Falls-Lumpkin Ridge Rd along the rd to Fall River and Cascade. 1013 Comment
  CHSC44693  Carex aurea L. P. Janeway; R. A. Schlising 1988-7-16 3025 Butte Large mdw at head of Willow Cr. 1935 Comment
  HSC87258  Carex barbarae L. P. Janeway, C. A. Janeway 1986-10-4 1901 Butte Along bank of Butte Creek in Butte Creek Canyon, 1 1/2mi E of Skyway 84 Comment
  CHSC102427  Carex bolanderi Lowell Ahart 2009-6-19 15928 Butte On wet soil, drainage in woodland, about 30 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 Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC52253  Carex bolanderi L. P. Janeway; R. A. Schlising 1988-7-16 3008 Butte Along Willow Creek 1/2 mi NW of Jonesville. 1508 Comment
  JEPS124417  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  SEINET4289436 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CHSC115743  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25712 Butte Northern Sierra Nevada Highlands. 0.5 air miles NE of Litte Bald Rock, NE of and below Bean Creek Road 0.6 road miles from Bald Rock Road. 1005 Comment
  JEPS121422  Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill; northern Sierra Nevada Highlands (n SNH) Comment
  HSC104258  Carex cyrtostachya L. Ahart 1998-7-19 8052 Butte About 0.5 mi. NW of the Lost Creek Reservoir, ~0.75 mi. NW of the Lost Creek Dam 1021 Comment
  CHSC45079  Carex echinata subsp. echinata Vernon Oswald 1987-5-21 2920 Butte Just w of the Skyway 1.4 mi s of Inskip. 1426 Comment
  HSC87066  Carex feta L. P. Janeway 1988-6-16 2799 Butte Along road on W side of canyon of Butte Creek, 3.5 mi. S of Humboldt Rd. 1296 Comment
  UC532225  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville 1524 Comment
  SEINET4292192 Image available Carex gracilior Unknown 2003-1 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge. Richardson Springs 7.5' quad. Comment
  CHSC44119  Carex jonesii L. P. Janeway 1987-6-26 2292 Butte At Rag Dump. 1173 Comment
  CHSC43875  Carex laeviculmis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles. 1987-7-19 2501 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. 1661 Comment
  CHSC52281  Carex mariposana L. P. Janeway; R. A. Schlising 1988-7-1 2922 Butte Rocky edges of Summit Lake (flank of Snow Mtn). 1889 Comment
  CHSC42368  Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 1 1/2 miles north-east of Forbestown. 853 Comment
  CAS-BOT-BC119744  Carex nebrascensis L. P. Janeway; C. A. Janeway 1986-9-13 1848 Butte Jonesville quad. Along Humbug Rd. ca 1.5 mi SW of Humbug Summit. 1859 Comment
  CAS-BOT-BC119723  Carex nervina L. P. Janeway 1987-7-4 2423 Butte Kimshew Point quad. Seepy area along road to Jones Meadow, 9.6 mi from Inskip. 1935 Comment
  SEINET10711616  Carex nudata Lawrence P. Janeway 1988-6-14 Janeway 2768 Butte T25N, R3E, Stirling City quad. SE1/4 of sec. 34. Along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. Forming dense clumps in rocks at edge of and in te creek. With Darmera peltata. 922 Comment
  CHSC52232  Carex pachystachya L. P. Janeway 1987-6-20 2254 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Road. 975 Comment
  JEPS102949  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte Within the City of Chico; south side of town; in backyard lawn at 129 W. 19th Street 60 Comment
  CAS-BOT-BC117986  Carex rossii John Thomas Howell 1962-6-16 37537 Butte Magalia 731 Comment
  CAS-BOT-BC117391  Carex senta A. S. Crafts 1976-4-12 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC117542  Carex serratodens L. P. Janeway; C. A. Janeway 1986-10-12 1918 Butte Side canyon on N side of N Fk Feather River and along Hwy 70 ca 5 mi E of Jarbo Gap. 487 Comment
  CDA13295  Carex stipata var. stipata G. F. Hrusa, T. D. Wilfred 1996-7-9 13143 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CAS-BOT-BC116736  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CHSC83287  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7616 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  JEPS102955  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  OBI22634  Carex subfusca H. F. Copeland 1932-7-14 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest Comment
  SEINET5242710 Image available Carex subfusca Unknown 1915-6-25 12018 Butte Chico Meadows in the Sierra Nevada Comment
  JEPS120093  Carex texensis Lowell Ahart 2012-6-14 18182 Butte At the entrance to Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  RSA0080127  Carex texensis Lowell Ahart 2012-6-14 18182 Butte Chico. At the entrance to Lower Bidwell Park, east of Woodland Avenue. 61 Comment
  HSC95493  Carex texensis L. P. Janeway 1997-4-20 5105 Butte S side of City of Chico, 129 W 19th St. 61 Comment
  CAS-BOT-BC115303  Carex utriculata L. P. Janeway 1988-7-29 3133 Butte Meadow near Humbug Summit Rd. 1.5 mi NE of the Snag Lake Dam. 1767 Comment
  CHSC47143  Carex vesicaria Henricus Jansen 1989-7-15 Butte Snag Lake. Comment
  SEINET6331714 Image available Carex vesicaria H. F. Copeland 1932-8-19 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC98986  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  CHSC113465  Carex whitneyi Lowell Ahart 2014-7-7 19603 Butte In a large disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC44838  Carex whitneyi L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3077 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  CAS-BOT-BC499135  Carex xerophila Peter F. Zika; L. P. Janeway 2012-5-16 25868 Butte Coutolenc Road 0.1 mi N of Skyway Rd. 720 Comment
  UCR190826  Castilleja 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
  UC726977  Castilleja affinis subsp. affinis A. A. Heller 1941-4-12 16066 Butte 2 mi above Pentz (Pentz-Paradise Grade) Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CHSC62584  Castilleja attenuata L. P. Janeway 1993-5-2 4339 Butte Adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC34080  Castilleja lacera M. S. Taylor 1980-5-15 2624 Butte Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd. ca. 9 mi ne of Chico. 396 Comment
  UC726419  Castilleja lacera A. A. Heller 1941-5-9 16107 Butte 0.5 mi above old Clear Creek Post Office site (on the Clark Road to Paradise) Comment
  CHSC33341  Castilleja rubicundula subsp. rubicundula R. Banchero; R. Schlising 1981-5-3 460 Butte 0.2 mi e of the jct of Meridian Rd and Hwy 99. Comment
  CHSC27264  Casuarina equisetifolia P. Moyer 1971-2-1 76 Butte CSUC campus. Cherry St. on sidewalk behind Engineering Bldg. 60 Comment
  CHSC61027  Casuarina equisetifolia Vernon H. Oswald 1993-7-29 5731 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
  CHSC4344  Catalpa bignonioides Carl Pejsa 1967-3-9 19 Butte Bidwell Park Forestry Station. Comment
  CHSC32664  Ceanothus cuneatus M. S. Taylor; D. Hemphill 1981-3-18 3431 Butte Open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd (Ponderosa Way), ca. 1 air mi ne of Magalia. 701 Comment
  SEINET13945814 Image available Ceanothus cuneatus T. A. Ranker, P. G. Trapp 1994-1 1618 Butte Pence Road, S of Paradise, Cherokee Quad (7.5 min TOPO map); ca 1300 ft alt., T21N R4E SEC6 396 Comment
  CAS-BOT-BC48816  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-5-11 DOB 923 b Butte Magalia Reservoir, at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) north of intersection with Pentz Road 700 Comment
  UCD123937  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-5-11 923 e Butte Magalia Reservoir, at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) north of intersection with Pentz Road, 0.29 km 340 deg. (True) NNW of Magalia. 700 Comment
  CHSC96968  Ceanothus diversifolius Lowell Ahart; Lawrence Janeway 2007-7-10 14283 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  CHSC39796  Ceanothus integerrimus Eloise Gallatin 1935-5-4 Butte Paradise. Comment
  CHSC77441  Ceanothus integerrimus Tim Stofer 1997-4-9 2 Butte Located on the east side of trail 120 ft. from the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC90034  Ceanothus integerrimus Ross Rowland 2001-4-14 44 Butte On slope at the Skyway and Crossroads Road junction about 50 yards north of Skyway, about 1 1/2 miles south of Neal Road in Paradise. 615480mE/4400220mN/zone 10N. 429 Comment
  JEPS115818  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west side of Guardians Trail, about 100 yards north 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
  SBBG28487  Ceanothus integerrimus A. A. Heller 1938-5-28 Butte Feather River Hwy, near Pulga 420 Comment
  RSA1133  Ceanothus lemmonii B. D. Stark, H. E. McMinn 1929-7-26 1396 Butte 1.5 miles S of Paradise. Comment
  SEINET10493642  Ceanothus lemmonii Mary Susan Taylor 1980-5-27 Taylor 2736 Butte T21N R6E wc border sec 30/29. Big Bend quad. On N side of Bald Rock Rd, ca. 0.5 mi E of Big Bald Rock, ca. 4 mi E of Lake Madrone; granitic soils. 975 Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CHSC23638  Ceanothus prostratus M. S. Taylor 1976-4-4 1057 Butte Ca. 2 mi w of junc of Ponderosa Way and Hwy 32, on n side of Ponderosa Way, ca. 23 mi ne of Chico. 609 Comment
  CHSC55405  Ceanothus prostratus Charlie Crannell 1991-4-13 1 Butte Forest Ranch; west of intersection of Doe Mill Road and Garland Road. 865 Comment
  LA44964  Ceanothus prostratus A. A. Heller; 1915-6-11 11971 Butte Sierra Nevada, Chico Meadows 1219 Comment
  UC402669  Ceanothus prostratus E. B. Copeland 1930-3-29 Butte De Sabla 800 Comment
  SEINET10493652  Ceanothus prostratus Mary Susan Taylor 1981-4-16 Taylor 3542 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  UC177577  Ceanothus velutinus var. velutinus H. M. Hall July 1914 9804 Butte near Butte Creek (Jonesville); near Butte Creek, Jonesville 1524 Comment
  RSA726481  Centaurea cyanus L. Ahart 2007-5-16 13893 Butte About 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel. 463 Comment
  CDA7260  Centaurea maculosa T. C. Fuller 1971-8-18 19925 Butte North side of overlook parking lot, Oroville Dam, 7 miles east of Oroville. Comment
  CHSC32681  Centaurea melitensis M. S. Taylor 1981-3-24 3447 Butte S side of Hwy 70, in turn out just e of Poe Dam, ca. 1 mi e of Pulga, in turn out. 487 Comment
  SEINET10473683  Centaurea solstitialis Mary Susan Taylor Taylor 776 Butte Weedy or cultivated plants of Chico. 61 Comment
  RSA88447  Centaurium muehlenbergii J. T. Howell 1951-6-26 27507 Butte Feather River Canyon. 198 Comment
  CHSC28481  Centaurium tenuiflorum Robert Schlising 1979-8-17 3468 Butte 1/4 mi s jct Hwys 162 to Oroville and 99; along the latter and across from Thermalito Afterbay; widespread at ditch margins but not in grassland. Comment
  CHSC66439  Centaurium tenuiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7758 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 mile Lane and the Sacramento River. At NE corner of Tract 7.2, Sanctuary I. 33 Comment
  JEPS93821  Centaurium venustum Lowell Ahart 1998-7-1 8021 Butte about 7 air mi n of Oroville (nw of the Ione oak tree, about 1/8 mi nw of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS94760  Centaurium venustum Lowell Ahart 1998-6-3 7969 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC48165  Centromadia pungens subsp. septentrionalis Vernon Oswald 1983-6-28 785 Butte Graylodge Waterfowl Management Area in Parking Lot 17. Comment
  UCSC000159  Cephalanthera austiniae Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC66677  Cephalanthus occidentalis var. californicus Vernon Oswald 1996-7-17 8061 Butte Sacramento River National Wildlife Refuge; Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 30 Comment
  RSA754371  Cephalanthus occidentalis var. californicus L. Ahart 2009-7-9 16019 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) W of Highway 32, about 10 miles NE of Chico. 204 Comment
  SEINET10537463  Cerastium viscosum Mary Susan Taylor 1975-4-6 Taylor 435 Butte Chico. 52 Comment
  SEINET10452399  Cercis occidentalis Mary Susan Taylor 1975-4-25 Taylor 502 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  SEINET11908937  Cercocarpus betuloides Unknown 1975-1 21 Butte ca 2 mi W of Cohassett, 10 yds S of Cohasset Highway 457 Comment
  CHSC1541  Cercocarpus betuloides var. betuloides M. Roberson 1956-5-14 Butte SW Paradise, along Skway. 426 Comment
  CHSC87207  Chamaemelum fuscatum Lowell Ahart 2004-4-10 10732 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  CHSC102511  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
  CDA13844  Chamaesyce nutans G. F. Hrusa, T. D. Wilfred 1996-9-6 13572 Butte Butte Basin; E side of Butte Creek approx. 1/2 mi. NE of confluence with Howard Slough, and immed. below McPherrin Dam (private and scheduled for removal). Comment
  CHSC51365  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald; Lowell Ahart 1990-10-11 4457 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  SEINET10529957  Cheilanthes carlotta-halliae Mary Susan Taylor 1980-5-27 Taylor 2662 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC69444  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  SEINET10529919  Cheilanthes gracillima Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5223 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  SEINET10529942  Cheilanthes siliquosa Mary Susan Taylor 1981-3-31 Taylor 3465 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  RSA755750  Chenopodium L. Ahart 2009-8-13 16280 Butte At the west end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Linda Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 69 Comment
  RSA725000  Chenopodium ambrosioides var. ambrosioides L. Ahart 2006-9-11 13281 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  JEPS110079  Chenopodium botrys Lowell Ahart 2006-7-16 12961 Butte Near of the open mudflow area, on the south side (road edge) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CDA3122  Chenopodium multifidum D. G. Kelch 2006-8-2 6 .349 Butte Butte Creek, north of Durham-Dayton Highway. Comment
  UC179653  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte hills 8 mi n Oroville Comment
  UC204577  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte 8 mi n Oroville Comment
  CDA34648  Chenopodium strictum var. glaucophyllum L. Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. Comment
  JEPS87387  Chimaphila menziesii Lowell Ahart 1993-7-29 7129 Butte ca. 6 1/2 mi. n.e. Stirling City (ca. 1/8 mi. s.w of Snow Mine, ca. 2 1/2 mi. e. of Bald Mt.) 1463 Comment
  CHSC2254  Chlorogalum angustifolium N. Maxwell 1929-5-15 Butte Cohasset Road. 304 Comment
  UC765935  Chlorogalum angustifolium R. F. Hoover 1936-5-21 1167 Butte 7 mi n Chico Comment
  POM110261  Chlorogalum angustifolium C. C. Bruce 1897-04 1838 Butte [No locality information provided] Comment
  CAS-BOT-BC252669  Chorizanthe membranacea Lowell Ahart 1975-6-5 s.n. Butte North Honcut Creek, Honcut 45 Comment
  RSA489567  Chorizanthe polygonoides James L. Reveal 1988-6-3 7007 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge. 518 Comment
  CAS-BOT-BC252835  Chorizanthe polygonoides var. polygonoides Lowell Ahart 1979-5-7 s.n. Butte 2 1/2 mi. SE of Paradise 472 Comment
  CHSC43863  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1988-4-4 3266 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the northeast part of the ranch. 60 Comment
  NY285649  Chorizanthe polygonoides var. polygonoides C. C. Parry s.n. Butte Comment
  CHSC103960  Chorizanthe stellulata Lowell Ahart 2010-5-23 16735 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC12738  Chorizanthe stellulata M. S. Taylor 1974-5-20 236 Butte Scattered patches ca. 50 ft n of Skyway to Paradise, ca. 6 mi e of Chico. 76 Comment
  CAS-BOT-BC247538  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  UCD40399  Chrysolepis Rodney Gale Myatt 1971-6-13 717 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  UC195391  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte nead Chico Comment
  CHSC44043  Circaea alpina subsp. pacifica L. P. Janeway 1987-6-26 2304 Butte Edge of pond in Camp Cr next to crossing of road, 2.5 mi east of Granite Ridge along the road to Lynch and Logue Mdws. 1365 Comment
  CAS-BOT-BC285281  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CDA21649  Cirsium douglasii var. breweri L. Ahart 2006-8-15 13188 Butte 15 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. Comment
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico Comment
  CHSC111407  Cirsium vulgare Lowell Ahart 2012-6-28 18245 Butte On the north side of the paved park road, about 30 yards south of Vallombrosa Avenue on the north side of Big Chico Creek, northeast of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CAS-BOT-BC228750  Cistanthe umbellata A. A. Heller 1913-6-7 10804 Butte Near Stirling 1074 Comment
  CHSC30796  Clarkia arcuata M. S. Taylor 1980-4-18 2527 Butte Bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  SEINET5740165 Image available Clarkia arcuata Johann D. Watjen 1969-1 40 Butte Table Mountain, 7 miles S of Hwy 70, 0.2 miles off of Cherokee Road.; Table Mountain 610 Comment
  CAS-BOT-BC164134  Clarkia concinna Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CDA35619  Clarkia concinna J. R. Keck Jr. 1978-5-23 PDR# 330033 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CHSC1101  Clarkia gracilis subsp. albicaulis V. Holt 1942-6-1 Butte Forest Ranch. 548 Comment
  RSA144790  Clarkia gracilis subsp. albicaulis G. I. Stage, R. Thorp 1959-6-21 59 -120 Butte 11.9 miles north-east of Chico. Comment
  CHSC71143  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28. South-facing road cutbank. 993 Comment
  JEPS103352  Clarkia mildrediae subsp. lutescens Lowell Ahart 2002-6-21 9731 Butte On road cut bank, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  UC1732064  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4422 Butte along Road 23N28 0.2 mi S of Last Chance Creek, 6.2 mi NW of Road 22N34 807 Comment
  CAS-BOT-BC163276  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River 1100 Comment
  CHSC64114  Clarkia mosquinii L. P. Janeway 1994-6-24 4673 Butte West side of Chino Ridge; along Rd 28 6.0 mi northwest of Rd 34, just before Last Chance Creek. South-facing road cutbank. 786 Comment
  CHSC70739  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte South end of Swayne Hill, along Road 23N28 0.8 mi west of Road 22N34. South-facing road cutbank. 731 Comment
  CHSC23672  Clarkia purpurea M. S. Taylor 1976-4-27 1082 Butte Ca. 50 ft e of Cohasset Hwy, ca. 3 mi n of Chico. 60 Comment
  CHSC48629  Clarkia purpurea subsp. viminea Vernon Oswald 1988-6-14 3377 Butte Jordan Hill Rd. between Coutolenc Rd. and the West Branch of the Feather River. 512 Comment
  CAS-BOT-BC164792  Clarkia rhomboidea L. P. Janeway; Perrie Cobb 1993-6-1 4364 Butte Southeast side of canyon of North Fork Feather River; along dirt road from Cresta Rest Area to the Bear Ranch Creek falls 487 Comment
  CHSC37429  Clarkia rhomboidea R. Schlising; K. Tarp 1982-7-28 4352 Butte E of Pulga and SW of Coyote Gap Station, on Big Bar Mountain Road. On roadside bank. 1249 Comment
  CHSC70750  Clarkia rhomboidea L. P. Janeway 1993-6-23 4399 Butte Along Rd 22N49 about 0.1 mi west of Oroville-Quincy Hwy, 1.0 mi southwest of Junction House. 1005 Comment
  SEINET10453164  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4118 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  UC1186581  Clarkia rhomboidea G. I. Stage, R. W. Thorp 1959-6-21 59 -118 Butte Tehama-Butte County Line and Highway 32 Comment
  CAS-BOT-BC165439  Clarkia unguiculata L. P. Janeway 1991-6-1 3986 Butte Northwest-facing cut-bank of Dark Canyon Road 3.35 mi south of Big Bend Road/Parkhill 304 Comment
  CHSC1116  Clarkia unguiculata R. Carter 1964-5-27 103 Butte Ca. 5 mi. E of Oroville on Old Quincy Rd. 100 yds. W of Glenn Dr. on S side of road. 91 Comment
  SEINET10572685  Claytonia heterophylla Lowell Ahart 1983-8-16 Ahart 4289 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  RSA0059521  Claytonia palustris E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1500 Comment
  CAS-BOT-BC439425  Claytonia parviflora subsp. parviflora Lowell Ahart 1988-3-27 5937 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC34703  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-8 2608 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC42409  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-12 5644 Butte South of Lumpkin ridge road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC33356  Claytonia perfoliata subsp. perfoliata Steve Alvarez 1980-3-3 8 Butte Within Chico city limits, ca. 0.2 km nnw of Horselake, 1.0 km n of Big Chico Creek, on top of the ridge. 150 Comment
  CHSC34944  Claytonia perfoliata subsp. perfoliata Patricia Haberkern 1974-3-24 21 Butte Abundant in grassy, shaded meadow ca. 50 yds. w Sycamore Pool in Bidwell Park, Chico. 60 Comment
  CAS-BOT-BC443706  Claytonia rubra Lowell Ahart 1984-7-19 4743 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC26739  Claytonia rubra subsp. rubra M. S. Taylor 1977-7-15 1401 Butte Scattered creekside in the shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  CAS-BOT-BC91348  Clematis lasiantha Lowell Ahart 1987-5-9 5587 Butte Along Pulga Road, about 0.25 mile W of Bardees Bar along the North Fork of the Feather River, ca. 2.5 miles SW of Pulga. 365 Comment
  CHSC95205  Clematis lasiantha R. D. Fischer 2004-3-28 806 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail. 335 Comment
  CHSC1732  Collinsia heterophylla H. Summers 1929-4-24 Butte S. bank of Butte Creek, near covered bridge. 106 Comment
  CHSC77447  Collinsia heterophylla Tim Stofer 1997-4-11 14 Butte This plant was located 50 yards from the head of the South Rim Trail of South Park Dr. in upper Bidwell Park. 76 Comment
  SFV3355  Collinsia heterophylla M. L. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Roadside. Comment
  UC1012166  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25680 Butte 2 mi up along Feather River above Oroville (Route 24); Feather River, Route 24 609 Comment
  CHSC28010  Collomia heterophylla M. S. Taylor 1978-7-21 1803 Butte On both sides of Quincy-Oroville Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  SEINET10496937  Collomia heterophylla Mary Susan Taylor 1981-4-28 Taylor 3563 Butte T22N R5E nw/sw sec 21. Berry Creek quad. N side of Rd 23N28.2, in loop of the rd, ca. 1.2 mi W of Chino Creek, ca. 4 air mi E of Jarbo Gap, ca. 23 air mi NW of Oroville. On decomposed granite; 3050 ft. 930 Comment
  JEPS115538  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
  SD3881  Collomia tinctoria E. B. Copeland 1931-6-29 Butte Jonesville, Butte County 1500 Comment
  UC600656  Collomia tinctoria E. B. Copeland 1929-7-18 Butte on slides over Butte Creek; Jonesville 1550 Comment
  JEPS115533  Comandra umbellata subsp. californica Lowell Ahart 2009-5-15 15704 Butte On the east side of Big Chico Creek, about 3 yards west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC1562472  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1990-5-29 4261 Butte 1.8 mi ne of Lomo (nw side of Humboldt Road (to Butte Meadows)); Humboldt Road 1380 Comment
  UC1609146  Comandra umbellata subsp. californica Vernon H. Oswald and Lowell Ahart 1993-4-21 5292 Butte 2.25 air mi nw of Magalia (on w side of Middle Butte Creek Trail, Ponderosa Way); Middle Butte Creek Trail, Ponderosa Way 731 Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 Comment
  CHSC46807  Corallorhiza striata R. A. Schlising 1981-6-16 4084 Butte Extreme NW corner of county, 1.5 mi N of KHSL radio tower in Cohasset. 1085 Comment
  SEINET10874016  Cornus nuttallii Mary Susan Taylor 1980-4-27 Taylor 2559 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC209587  Cornus sericea A. A. Heller 1938-7-20 15282 Butte At the head of Snag Lake 7 miles east of Chaparral 1524 Comment
  POM77766  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Lomo Comment
  RSA4596  Cornus stolonifera E. B. Copeland 1930-6-25 431 Butte Jonesville. 1500 Comment
  CHSC94162  Coronilla varia Lowell Ahart 2006-6-24 12862 Butte Disturbed area on the east side of the dirt road (Ponderosa Way), south of an intersection, a gated road goes southeast, on Cohasset Ridge, about 4 miles (air) northeast of Cohasset. 1113 Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  CDA34650  Cotoneaster lacteus L. Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  JEPS120054  Cotoneaster lacteus Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17854 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. 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
  CDA42770  Cotula australis L. Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. Comment
  CHSC106880  Cotula australis Lowell Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs. 29 Comment
  CHSC112911  Crassula aquatica B. Castro; Robin Carter 2011-4-29 1870 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC103949  Crassula connata Lowell Ahart 2010-4-30 16598 Butte Notth side of disk gold area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  UCD80239  Crassula connata CNPS SN Foothill Team 2005-4-14 SNFN 0034 c Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~45 m from the southern fence and 30 m west of the eastern fence. 98 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
  CDA6211  Crassula tillaea L. Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC31654  Crassula tillaea L. Ahart 1973-3-16 176 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50036  Crassula tillaea Lowell Ahart 1990-1-17 6407 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 301 Comment
  CHSC27226  Crataegus monogyna P. Moyer 1971-11-7 57 Butte 2 ft. from nw corner of Auditorium. CSUC Campus. 60 Comment
  JEPS120077  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  JEPS120499  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road / Ponderosa Way. Comment
  CDA6678  Crucianella angustifolia L. Ahart 2003-5-26 10214 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC111976  Crucianella angustifolia Lowell Ahart 2012-6-2 18132 Butte Along sides of Truex Road, west of intersection of Truex Road and Trevor Road, about 1/8 mile northwest of West Branch Bridge across Lake Oroville. 286 Comment
  CHSC117425  Crucianella angustifolia Lowell Ahart 2016-5-30 20899 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
  JEPS98582  Crucianella angustifolia Lowell Ahart 2000-5-13 8354 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SD122578  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte edge of dirt road, ar fork of Feather Falls and Lumpkin Ridge Rd., 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown 500 Comment
  CDA1929  Crypsis schoenoides L. Ahart 2002-10-17 10000 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
  CHSC36551  Crypsis schoenoides L. Ahart 1982-7-10 3672 Butte On the bottom of a duck pond, ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  POM313218  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  RSA492371  Crypsis schoenoides P. Reisentz 1979-5-13 s.n. Butte 4 miles east on Cherokee Rd. from Hwy. 70 Comment
  UC857133  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  CHSC107243  Cryptantha flaccida Lowell Ahart 2011-6-5 17366 Butte On a large gravel bar, on the north side of Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC46751  Cryptantha flaccida Lowell Ahart 1972-5-8 102 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  SD122570  Cryptantha flaccida Lowell Ahart, Peter Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, 2 miles east of the Old Yankee Hill, ca 16 miles northeast of Oroville 449 Comment
  UC480683  Cryptantha intermedia H. F. Copeland 1920-5-23 250 Butte ridge between Big Chico Creek and Little Chico Creek (Humboldt ridge) Comment
  CHSC29972  Cryptantha milobakeri R. A. Schlising 1980-6-10 3673 Butte Along Humboldt Road, 1.9 mi NE jct with Hwy 32 at Loma. Comment
  CHSC39028  Cryptantha rostellata Lowell Ahart 1984-5-18 4606 Butte Peter Ahart Ranch, about 1.25 mi e of Honcut and 12 mi s of Oroville. 50 Comment
  CHSC46757  Cryptantha rostellata Lowell Ahart 1979-5-20 1878 Butte On a gravel bar along the edge of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC1563267  Cucumis melo Lowell Ahart 1990-5-10 6629 Butte about 1/4 mi south west of Enterprise Bridge across Lake Oroville (McCabe Creek); , McCabe Creek 228 Comment
  NY16721  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
  JEPS110256  Cuscuta californica var. californica Lowell Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC94793  Cuscuta pentagona Lowell Ahart 2006-10-1 13388 Butte Bottom of a large dredger pond, west of North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 54 Comment
  CHSC55056  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte North side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), east of Oroville-Quincy Hwy, about 5 miles (air) north-east of Brush Creek. 1097 Comment
  UCD126346  Cuscuta subinclusa A. A. Heller 1914-7-22 11588 Butte near West Branch. 1066 Comment
  JEPS106131  Cycladenia humilis var. humilis Lowell Ahart 2004-8-19 11396 Butte East of road sign 300 R 4, west of the County Road, about 1 mile north of Ramsey Bar, about 3 miles (air) southeast of Bald Mountain, about 5 1/4 miles (air) northeast of Stirling City 1417 Comment
  UC105506  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 370 Butte Comment
  NY43591  Cydonia oblonga S. Bianco 1995-11-10 1060 Butte 8841 Skyway Rd (Private land holding) 640 Comment
  CHSC62802  Cynosurus echinatus L. P. Janeway 1993-6-3 4371 Butte Plumas National Forest. South end of Swayne Hill, along edge of the road to Big Bar Mtn (23N28). 731 Comment
  JEPS87444  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river); w side Fall River 1036 Comment
  CHSC109752  Cyperus difformis Lowell Ahart 2012-10-20 18504 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET3450852  Cyperus difformis Unknown 2003-6-23 10314 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
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  CDA34640  Cyperus eragrostis L. Ahart 2009-6-3 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. Comment
  CHSC25335  Cyperus eragrostis M. P. Hayes 1977-8-13 34 Butte Butte College Campus, football playing fields near a wet standpipe. Intersection of Pentz and Clark Roads. 91 Comment
  JEPS120017  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET9751966 Image available Cyperus eragrostis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  SEINET10466874  Cyperus eragrostis Mary Susan Taylor 1978-9-8 Taylor 1881 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC111174  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC43784  Cyperus erythrorhizos Vernon Oswald 1983-7-31 940 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  SEINET10938647  Cyperus erythrorhizos Mary Susan Taylor Taylor 836 Butte Bidwell Park, Chico. Comment
  UCD141049  Cyperus erythrorhizos E. M. Johnston 1915-1 W 153 J Butte Biggs. Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  SEINET4572027  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte about 1 1/2 miles S of Richvale 31 Comment
  CHSC102509  Cyperus niger Lowell Ahart 2009-8-3 16257 Butte Along a small drainage about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  SEINET3478064  Cyperus niger Unknown 2000-6-17 8482 Butte Paradise, Paradise, about 2 miles south, about 0.25 miles northeast of Kunkle reservoir, east of the Pentz Magalia Road 540 Comment
  CHSC38898  Cyperus squarrosus Vernon Oswald 1983-6-17 699 Butte Upper Bidwell Park, Chico, on the n side of Chico Creek ca. 300 ft w of the parking area at Day Camp. 91 Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  RSA4406  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville 1700 Comment
  CHSC68420  Cyperus strigosus L. P. Janeway 1988-6-29 2904 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CAS-BOT-BC68047  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte About 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CAS-BOT-BC68050  Cystopteris fragilis Lowell Ahart; Vernon Oswald 1987-8-5 3184 Butte Outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail 2072 Comment
  CHSC101752  Cystopteris fragilis Lowell Ahart 2009-5-23 15740 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 Highwat 32, about 10 miles northeast of Chico. 234 Comment
  CHSC69105  Cystopteris fragilis Lowell Ahart 1997-8-1 7766 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided. Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC399283  Cystopteris fragilis Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Spring Chico Comment
  SEINET10535619  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2365 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UC725452  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte field 3 mi. w. Chico Comment
  UC574002  Danthonia californica H. S. Yates 1936-8-13 17549 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  HSC100744  Danthonia californica var. americana Lowell Ahart 2010-9-21 17230 Butte N side of a poor dirt road, 1 (air) mi. NE of Jones Meadow, 2.5 (air) mi. SE of Philbrook Reservoir. 1900 Comment
  JEPS120014  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10546583  Datura meteloides Lowell Ahart 1985-9-14 Ahart 5167 Butte On dry red soil on the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC76008  Datura stramonium var. tatula Lowell Ahart; Vernon H. Oswald 1999-8-13 8134 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10536232  Delphinium Mary Susan Taylor 1981-4-28 Taylor 3570 A 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
  CAS-BOT-BC8794  Delphinium gracilentum Lowell Ahart 1980-5-29 2356 Butte 5 miles north-east of Mountain House 1100 Comment
  CHSC48690  Delphinium gracilentum Vernon Oswald 1984-4-9 1130 Butte Feather Falls Trail, 1.8 trail mi. from the trail head at the end of Bryant Ravine Rd. 502 Comment
  CAS-BOT-BC8572  Delphinium hansenii Lowell Ahart 1980-5-8 2219 Butte North-east of Honcut 65 Comment
  CHSC31843  Delphinium hesperium L. Ahart 1978-5-24 1743 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  UCD22641  Delphinium hesperium Joseph Laferriere 1982-4-18 3 Butte Side of Hwy 70, 1/4 mile SW of jet of Baggett-Marysville Rd., 3 miles south of Oroville. 65 Comment
  CHSC36086  Delphinium nuttallianum R. A. Schlising; J. D. Jokerst, R. Banchero 1980-6-16 3722 Butte 2.0 miles S of jct Skyway and Humboldt Road in Butte Meadows. 1432 Comment
  CHSC56768  Delphinium nuttallianum Kirsten Tarp 1982-8-1 240 Butte SE of Philbrook Reservoir on Table Mt. Comment
  CHSC56774  Delphinium patens subsp. patens M. S. Taylor 1976-3-9 1022 Butte On Burton's Mesa, ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC52120  Delphinium variegatum R. E. Alumbaugh 1984-4-26 1 Butte 6.4 mi e of hwy 99 and ca. 50 yds n of Skyway, 8.5 mi e of Chico. 387 Comment
  CHSC90040  Delphinium variegatum Rebecca L. Hill 1990-4-8 11 Butte Ca. .5 mi se of jct of Oroville Chico Hwy and Mesa Road. W side of Oroville Chico Hwy, ca. 6 mi se of Chico. 47 Comment
  UC1562846  Delphinium variegatum Barbara Ertter with Lowell Ahart 1986-4-13 5886 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  POM150565  Delphinium variegatum subsp. variegatum A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek). Comment
  POM253323  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte Along the Feather River Highway near Yankee Hill Road about 20 miles from Oroville Comment
  SEINET12091622  Dendromecon rigida Unknown 1981-1 12 Butte ca 200 m W of Butte Creek and 1.2 km N of Magalia Reservoir, 2.5 km N. of Magalia 735 Comment
  SEINET12094434  Dendromecon rigida Unknown 1988-1 10 Butte 1.2 mi N of Paradise, ca 1.3 mi SE of Magalia Reseervoir, ca 40 ft. E of Skyway 579 Comment
  SBBG30028  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville 1750 Comment
  CAS-BOT-BC192652  Deschampsia danthonioides V. Oswald; L. Ahart 1988-7-13 3577 Butte Road to High Lakes e of Philbrook Reservoir 1859 Comment
  SEINET10788955  Deschampsia danthonioides Roland McKee 1909-1 McKee s.n. Butte Chico. Comment
  SEINET10524190  Deschampsia danthonioides D. McClain 1969-4-18 McClain 44 Butte 400 yds. n. from gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 488 Comment
  CAS-BOT-BC201744  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows 1402 Comment
  CHSC31710  Deschampsia elongata L. Ahart 1977-6-16 1424 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42913  Deschampsia elongata Lowell Ahart 1987-7-8 5792 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  UCD63286  Deschampsia elongata A. A. Heller 1917-7-26 12846 Butte Butte Meadows. 1402 Comment
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC9699  Dicentra formosa Nancy Mosman 1971-7-3 53 Butte Along n side of Humboldt Road ca. 0.7 mi e of Butte Meadow Ranger Station. 1371 Comment
  CHSC19658  Dicentra spectabilis K. R. Stern 1965-7-23 2195 Butte Chico. Comment
  SEINET10968111  Dichanthelium lanuginosum var. fasciculatum Mary Susan Taylor 1980-5-27 Taylor 2679 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CAS-BOT-BC500060  Dichelostemma capitatum H. E. Brown 1897-5-1 s.n. Butte Near Clear Creek Comment
  CHSC2815  Dichelostemma capitatum subsp. capitatum David Prall 1965-3-14 1 Butte Ca. 2 yards south of Neal Rd. 1 mile east of Highway 99E. 106 Comment
  RSA712798  Dichelostemma multiflorum L. P. Janeway 2005-6-26 8430 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  UC843822  Dichelostemma multiflorum A. A. Heller 1915-5-28 11902 Butte near Cohasset; Sierra Foothills Comment
  SEINET12046810  Dichelostemma multiflorum Unknown 1978-1 7 Butte 1.5 mi NE of jct of US 99 & Skyway near Chico, ca 100 ft E of roadway 69 Comment
  UC143025  Dichelostemma volubile Mrs. R. M. Austin May 1896 836 Butte Iron Canyon Comment
  CDA7728  Digitaria sanguinalis L. Ahart 2004-8-3 11398 Butte On the south side of O Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. Comment
  CHSC50704  Digitaria sanguinalis Lowell Ahart 1990-6-16 6519 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
  HSC97055  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte South side of O'Brien Rd., about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  JEPS128620  Digitaria sanguinalis Lowell Ahart 2017-8-1 21653 Butte Park west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  UCD63991  Digitaria sanguinalis E. Wilson 1934-9-3 Butte Biggs Rice Station. Comment
  UCD64140  Digitaria sanguinalis L. Ahart 1982-8-22 3745 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 50 Comment
  CHSC103934  Diplacus angustatus Lowell Ahart 2010-5-16 16693 Butte Bottom of a small drainage, 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
  CHSC44670  Diplacus angustatus R. Banchero 1980-4-26 142 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC116347  Diplacus aurantiacus J. R. Keck Jr. 1978-5-23 PDR 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  CHSC47496  Diplacus douglasii Lowell Ahart 1973-3-14 173 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC43186  Diplacus kelloggii Leslie Steidl 1980-4-1 7 Butte On n side of Craig Access Rd, 2 mi nnw of Lumpkin Rd at boundary of State Park, ca. 18 mi e of Oroville. 316 Comment
  CHSC30718  Diplacus layneae M. S. Taylor 1980-5-27 2660 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC92587  Diplacus layneae L. P. Janeway 2005-5-29 8399 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 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
  CHSC37269  Diplacus mephiticus L. Ahart 1982-6-15 3584 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feathe Falls. 1000 Comment
  CAS-BOT-BC154038  Diplacus torreyi Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CAS-BOT-BC154039  Diplacus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road Comment
  CHSC1800  Diplacus tricolor E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CAS-BOT-BC151361  Diplacus tricolor Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CAS-BOT-BC136237  Dodecatheon alpinum A. A. Heller 1915-6-11 11960 Butte Butte Meadows in the Sierra Nevada 1219 Comment
  HSC67921  Dodecatheon clevelandii subsp. patulum J. P. Smith 1973-3-22 5930 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC19929  Dodecatheon clevelandii var. patulum M. S. Taylor 1975-3-3 392 Butte Abundant in a field on e side of Cohasset Rd, ca. 3 mi n of Chico. 60 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
  CHSC13892  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte Approx. 4 mi se on Cherokee Road from its intersection with Hwy 70, w side of road near oaks in a cow pasture. Comment
  CHSC31869  Dopatrium junceum L. Ahart 1974-7-20 555 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS120766  Dopatrium junceum Lowell Ahart 2013-9-20 19058 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
  CHSC52008  Downingia bella John P. McKeon 1980-4-22 10 Butte Ca. 20 m s of jct of Hwy 99 and Cana Hwy, 15 m w of Hwy 99, 19 km nw of Chico. 70 Comment
  RSA517016  Downingia bicornuta Barbara Ertter, L. Ahart 1986-4-13 5902 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  SBBG69653  Downingia bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi N of Chico Comment
  CHSC117343  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2007-7-24 2046 Butte Sacramento Valley. Off E edge of Thermalito Afterbay, ca 1.36 air mi E of Hwy 99 and 1 mi S of Highway 162E. Just S of the Afterbay perimeter road, at NE corner of low pond (impoundmant) with willows. 43 Comment
  CHSC75262  Downingia insignis Lowell Ahart 1999-5-21 8074 Butte On the sides and bottom of a drain ditch in a pasture field, 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
  CHSC76938  Downingia insignis Ida Ryan 1893-5-1 Butte Near Nelson. Comment
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  UC890894  Downingia montana A. A. Heller 1917-7-28 12843 Butte Butte Meadows 1280 Comment
  UC1562499  Downingia ornatissima Barbara Ertter with Lowell Ahart 1986-4-13 5893 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  SEINET10458518  Downingia ornatissima Mary Susan Taylor 1978-5-7 Taylor 1609 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UCD23256  Downingia ornatissima W. R. Powell 1968-4-23 1474 Butte 2 miles SSE of Oroville. 71 Comment
  CAS-BOT-BC41346  Draba verna Lowell Ahart 1980-3-8 2032 Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC44483  Draba verna var. aestivalis Lowell Ahart 1988-3-27 5931 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC87199  Draba verna var. aestivalis Lowell Ahart 2004-3-26 10705 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. 502 Comment
  SEINET10448472  Draba verna var. aestivalis Lowell Ahart 1983-4-1 Ahart 3914 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
  CHSC35016  Draba verna var. verna R. E. Preston 1982-3-20 193 Butte Roadside, Hwy 70 at Bear Ranch Creek; ca. 22 mi nne of Oroville. 457 Comment
  UCD123982  Drosera rotundifolia Barry Rice 2011-7-6 BR 110703 Butte no exact location. 1420 Comment
  CAS-BOT-BC527354  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  CAS-BOT-BC157792  Drymocallis lactea var. lactea A. A. Heller 1915-6-27 12049 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC70853  Dryopteris arguta Lowell Ahart 1990-3-19 6417 Butte on the south side of Pacific Heights Road, about 3 1/2 miles southwest of Oroville 33 Comment
  SEINET10530140  Dryopteris arguta Mary Susan Taylor 1979-10-13 Taylor 2267 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
  CHSC454  Dudleya cymosa M. Roberson 1962-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC455  Dudleya cymosa C. Merton 1929-5-1 Butte Paradise. Comment
  CAS-BOT-BC428073  Dudleya cymosa subsp. cymosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC105958  Echinochloa colona Lowell Ahart 2010-9-24 17236 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
  CAS-BOT-BC197093  Echinochloa crus-galli Forman T. McLean 1921-9-25 17 Butte Chico Comment
  CDA42929  Echinochloa crus-galli L. Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS110295  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  SEINET231760 Image available Echinochloa crus-galli L. Arhart 1984-9-17 4792 B Butte Peter Arhart Ranch ca. 2.3 mi N and 0.3 mi E of Honcut ca. 12 mi S of Oroville 50 Comment
  UCD60928  Echinochloa crus-galli Leonard 1921-6-16 X- 3094 Butte Chico. Comment
  JEPS76251  Echinochloa muricata W. L. Jepson 1939-8-17 19464 Butte Feather River Bottom near Oroville; Feather River bottom 45 Comment
  UC1100138  Echinodorus berteroi Herbert L. Mason and Verne Grant 1946-8-7 12989 Butte Gridley rd. n. of Butte Sink Comment
  CHSC113232  Elatine Lowell Ahart 2014-4-30 19421 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  JEPS124104  Elatine Lowell Ahart 2015-5-17 20192 Butte About 1 3/4 miles west of Honcut. Comment
  CHSC78563  Eleocharis Lowell Ahart 2000-8-23 8665 Butte In a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS98431  Eleocharis bella Lowell Ahart 2000-6-4 8444 Butte about 3 1/2 mi (air) SW of Forbestown (small meadow S of intersection of Black Bart Road and Forbestown Road) 731 Comment
  CHSC68438  Eleocharis macrostachya L. P. Janeway 1988-6-5 2731 Butte Canyon of Big Chico Creek; about 1 mi northeast of the end of Upper Park Road. 213 Comment
  CAS-BOT-BC113339  Eleocharis montevidensis Lowell Ahart 1978-7-15 s.n. Butte On moist soil along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3478049  Eleocharis pachycarpa Unknown 2000-7-18 8597 Butte Oroville, Oroville, about 4 air miles southwest, about 0.5 miles west of Pacific Heights Road, Oroville Wildlife Area 40 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
  CAS-BOT-BC112656  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte SE end of the large pond in the Oroville Wildlife Area on the W side of the Feather River, 32 Comment
  SEINET13710024  Eleocharis quinqueflora Lowell William Ahart, Lowell William Ahart 2000-1 8386 Butte 13 Mi. SE of Oroville (T17N, R4E, sec 12, SE 1/4) 180 Ft. 55 Comment
  HSC96912  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte W of the cow chute and parking lot on W side of Cherokee Rd., N Table Mtn., 7 mi. N of Oroville 404 Comment
  SEINET7587006 Image available Eleocharis quinqueflora Lowell Ahart 2000-6-27 8530 Butte On the north side of Bean Creek Road, about 1.4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1067 Comment
  SEINET7587011 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-30 8411 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 549 Comment
  CHSC76303  Eleocharis radicans Lowell Ahart 1999-9-21 8276 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
  CHSC38816  Eleusine indica Vernon Oswald 1983-10-3 1051 Butte Upper Bidwell Park, Chico, at the north entrance to the parking lot at Hooker Oak Recreation Area. Roadside. 79 Comment
  JEPS88230  Elymus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7732 Butte Riparian Sanctuary Sacramento River National Wildlife Refuge, Llano Seco Unit (n end, U.S. Fish and Wildlife Service parcel between 7 Mile Lane and river) 28 Comment
  POM183178  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville. 1524 Comment
  CAS-BOT-BC203425  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  CHSC44919  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  SEINET10836117  Elymus multisetus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4114 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  JEPS94566  Elymus stebbinsii Lowell Ahart 1997-7-11 7744 Butte road cut on n side of dirt road se Cold Creek (about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City) 1219 Comment
  UCD62619  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  UC591542  Elymus trachycaulus H. F. Copeland 1935-7-25 Butte Jonesville Comment
  CDA2042  Elytrigia elongata L. Ahart 2000-7-17 8595 Butte Peter Ahart Ranch, about 12 miles (air) southeast of Oroville. about 1 1/2 miles north and 1 1/2 miles east of Honcut, Comment
  JEPS98692  Elytrigia pontica subsp. pontica Lowell Ahart 2000-7-17 8595 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CAS-BOT-BC410228  Enemion occidentale J. H. Morrison 1933-4-10 s.n. Butte Near Durham Comment
  SEINET6635812 Image available Epilobium brachycarpum H. F. Copeland 1923-1 404 Butte Nelson Comment
  UCD105294  Epilobium brachycarpum A. A. Heller 1916-9-5 12648 Butte 8 miles N of Oroville. Comment
  SEINET10453001  Epilobium brachycarpum Lowell Ahart 1985-10-12 Ahart 5201 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC51005  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 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. 228 Comment
  CHSC51271  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-10-3 6624 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  POM183926  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-08 s.n. Butte Jonesville, in woods along Butte Creek 1500 Comment
  UC1562295  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along small stream below high water line of Lake Oroville (e of Enterprise Boat Launch Area, about 1/4 mi nw of Enterprise Bridge across lake) 243 Comment
  JEPS122084  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2014-7-13 19653 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC46144  Epilobium cleistogamum Lowell Ahart 1978-5-15 1728 Butte On the bottom of a vernal pool, in a pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC30900  Epilobium densiflorum M. S. Taylor 1980-8-30 3320 Butte Along vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 mi e of Oregon City, ca. 5.5 mi n of Oroville. 365 Comment
  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
  UCD106306  Epilobium densiflorum M. Vincent 1963-6-8 394 Butte Honey Run Road. Comment
  SEINET6637331 Image available Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  UC1564730  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-21 3877 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville); southwest branch of Upper Butte Creek 1828 Comment
  JEPS108857  Epilobium minutum Lowell Ahart 2006-5-10 12623 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 385 Comment
  RSA712800  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  UC478494  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte The Summit Jonesville 2000 Comment
  UC177594  Epilobium obcordatum H. M. Hall 1914-7-27 9793 Butte Butte Mt. 2072 Comment
  CHSC113488  Epilobium oregonense Lowell Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC36555  Epilobium pygmaeum L. Ahart 1982-7-10 3669 Butte Ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi w of Gridley. In a duck pond. 35 Comment
  CHSC35109  Epilobium torreyi R. Schlising 1980-6-17 3737 Butte N of Magalia and De Sabla, along Skyway, 1.2 mi NE of jct with Coutelenc Road at Lovelock. Roadside. 899 Comment
  JEPS117208  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  SEINET7073008 Image available Epilobium torreyi A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  SD10030  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 Butte Jonesville Comment
  UC600577  Equisetum hyemale subsp. affine H. F. Copeland 1920-5-23 226 Butte Jonesville Comment
  CHSC11939  Equisetum laevigatum E. B. Copeland 1930-6-24 403 Butte Jonesville. 1500 Comment
  CHSC33694  Equisetum laevigatum L. Ahart 1981-4-9 2752 Butte Near the edge of North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC44622  Equisetum telmateia subsp. braunii Vernon Oswald 1984-4-16 1152 Butte Humbug Rd. (Centerville Rd.), 2.8 mi s-w of its jct. With Nimshew Ridge Rd. 548 Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 Comment
  CHSC41982  Eragrostis mexicana subsp. virescens Lowell Ahart 1986-11-7 5427 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-BC284083  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-14 5469 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CAS-BOT-BC278507  Eragrostis pilosa Lowell Ahart 1981-9-19 3188 Butte Cresta Power House 550 Comment
  CAS-BOT-BC278514  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  RSA755367  Eragrostis pilosa var. pilosa L. Ahart 2009-10-7 16408 Butte Just under water when the Thermalito Afterbay is full, Larkin Road access to the Thermalito Afterbay, about 5 air miles southwest of Oroville. 41 Comment
  SEINET10873980  Eremocarpus setiger Mary Susan Taylor 1982-8-16 Taylor 4989 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CHSC101490  Eremogone cliftonii Samantha Mackey Hillaire 2008-6-10 1253 Butte Lassen National Forest. Powerline survey, approx. 1.4 air miles east of Flea Mountain to southern end of occurrence. Accessed from roads 24N13, 24N13A, 23N14Y, 23N22Y. Found plants on ridges between 636057.190602654, 4414774.7153736 in the north to 633268,739075563, 4410021.81676031 in the south. Elevation 3200-4292 feet. 989 Comment
  CHSC35050  Eremogone cliftonii R. A. Schlising; R. Banchero 1981-6-29 4124 Butte NE part of county, 0.5 mi SW of Ramsey Bar on Little Kimshew Creek. 1417 Comment
Read comments Jul 8 2014
  CHSC90973  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8376 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road on southwest side of Dogwood Creek; canyon of North Fork Feather River. 594 Comment
Read comments Jul 8 2014
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  UC87299  Ericameria nauseosa var. speciosa H. E. Brown Nov 15 1896-Nov 30 1896 46 Butte near Clear Creek 53 Comment
  POM55488  Erigeron divergens A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CHSC58252  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte Along Oregon Gulch, Lake Oroville Recreation Area, about 1 1/4 miles west of Oroville Dam. 91 Comment
  SD5417  Erigeron miser E. B. Copeland 1930-8-6 Butte Jonesville 1550 Comment
  CHSC3202  Eriodictyon californicum Gerry Carrauthers 1966-4-23 126 Butte 9 mi. from city of Chico (east) on Highway 32. Near roadside. Comment
  CHSC679  Eriodictyon californicum A. Goekler 1928-4-25 Butte Bidwell Park 76 Comment
  SBBG16968  Eriodictyon californicum M. Vincent 1962-4-19 213 Butte Humbug Rd, 3 mi NE of Centerville Comment
  SEINET10497041  Eriodictyon californicum Mary Susan Taylor 1975-2-16 Taylor 385 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  POM306191  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 s.n. Butte Feather River Hwy. Comment
  SEINET10623835 Image available Eriogonum marifolium Edwin B. Copel 1930-7-12 Copeland 410 Butte Above Jonesville, Butte County. On loose soil in open fir woods, with Calyptridium (No. 410a). 2000 Comment
  NY323384  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 410 Butte Above Jonesville 2000 Comment
  CHSC63709  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte Along both sides of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  JEPS87617  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  CAS-BOT-BC269854  Eriogonum nudum var. pubiflorum A. A. Heller 1914-7-22 11585 Butte Little Summit 1463 Comment
  UC725365  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 15839 Butte w Pentz (roadside bank) Comment
  CAS-BOT-BC268615  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  SEINET3404037 Image available Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville: Ridge between Jones and North Willow Creeks 1700 Comment
  CAS-BOT-BC267909  Eriogonum umbellatum V. Oswald; L. Ahart 1988-7-29 3645 Butte Ca. 5 mi. (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC51894  Eriogonum umbellatum var. ahartii L. P. Janeway 1987-6-20 2267 Butte Top of Lumpkin Ridge 0.6 mi S of the Feather Falls-Lumpkin Ridge Rd. 1249 Comment
  UC1594723  Eriogonum umbellatum var. nevadense Lowell Ahart 1992-7-29 6868 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  RSA31981  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte Feather River Hwy, 23 miles from Oroville Comment
  RSA0048238  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Feathr River Cyn., Hwy. 70. 1066 Comment
  SEINET10871615  Eriogonum ursinum Mary Susan Taylor 1978-7-18 Taylor 1698 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  RSA699709  Eriogonum vimineum L. Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast fo Paradise Dam, about 4 mi. (air) southwest of Stirling City. Yellow Pine Forest. 815 Comment
  CHSC100919  Eriophyllum lanatum var. croceum R. A. Schlising; Arthur Dawson, Don Burk 1982-6-2 4280 Butte North of Oroville and north of Concow Reservoir. At roadside. Comment
  CHSC73931  Eriophyllum lanatum var. croceum B. Castro; L. Gehrung 1998-7-16 809 Butte Ca 7.5 air mi NW of Brush Creek, ca 0.7 mi SE of Big Bar Mtn, on N edge of USFS Rd 22N73X/76X, ca 0.35 E of its jcn with the main road (USFS Rd 23N28). In bed of old logging road. 1194 Comment
  JEPS97598  Eriophyllum lanatum var. croceum R. D. Stone and W. B. Davilla 1984-5-16 605 Butte 2 mi west of Stirling City (0.2 mi S of confluence of Little West Fork and Cunningham ravine); Little West Fork of West Branch Feather River 929 Comment
  CAS-BOT-BC308153  Eriophyllum lanatum var. grandiflorum A. A. Heller; H. E. Brown 1902-5-7 5483 Butte Berry Canyon near Clear Creek Comment
  CAS-BOT-BC308167  Eriophyllum lanatum var. grandiflorum Mrs. C. C. Bruce 1893-5-1 1989 Butte Unspecified Comment
  CHSC109576  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2012-6-7 10856 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines 895 Comment
  CHSC329  Eriophyllum lanatum var. grandiflorum M. Roberson 1956-5-21 Butte Near Paradise along Skyway. 548 Comment
  CHSC33404  Eriophyllum lanatum var. grandiflorum R. E. Preston 1981-7-8 25 Butte Scott's John Creek, at Butte-Plumas County border, ca. 5.5 km ne of Jonesville. 1930 Comment
  CHSC42466  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1987-5-22 5666 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC6702  Eriophyllum lanatum var. grandiflorum Marilyn Lee 1968-5-3 166 Butte North side of Skyway ca 8 miles E. of Chico. Comment
  HSC38067  Eriophyllum lanatum var. grandiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2475 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  RSA302658  Eriophyllum lanatum var. grandiflorum J. R. Shevock 1972-5-19 1781 Butte Hwy 70, Feather River Canyon. 610 Comment
  SFV3891  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 92 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC569464  Eriophyllum lanatum var. grandiflorum P. L. Johannsen 1936-4-16 927 Butte Bolt Creek Paynes Creek Quadrangle, Bolt Creek 1432 Comment
  HSC27262  Erodium botrys J. P. Smith 1972-3-23 5095 Butte 1.6 mi. from junction with Hwy. 99 on road to Paradise Comment
  CHSC31154  Erodium brachycarpum M. S. Taylor 1980-3-1 2331 Butte West end of Dump, on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  JEPS94822  Erodium moschatum Lowell Ahart 1998-6-9 8002 Butte about 7 air mi n Oroville (about 5/8 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  SEINET10495115  Erodium moschatum Mary Susan Taylor 1973-1 Taylor 52 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS15842  Eryngium articulatum W. L. Jepson 1934-5-5 16610 Butte 1 1/2 mi. s. Nord (swales of Pine Creek near Sacramento R.); Pine Creek Comment
  CHSC37504  Eryngium castrense J. D. Jokerst 1983-1-17 1676 Butte Top of North Table Mt. Ca 1/2 mile north of Cherokee Rd at the east edge of mesa. 381 Comment
  JEPS127005  Eryngium castrense Lowell Ahart 2016-5-24 20849 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  UC1122957  Eryngium castrense F. W. Embree 1934-4-24 42 Butte 4 1/2 mi. n. & 1 1/2 mi. e. Biggs (Plot <A or G>); Marysville Quad. Comment
  CHSC29285  Erythranthe arvensis R. A. Schlising 1980-4-14 3563 Butte Richvale vernal pools. 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC42870  Erythranthe bicolor Lowell Ahart 1987-5-11 5615 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC58958  Erythranthe breweri Lowell Ahart 1992-7-21 6802 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CAS-BOT-BC153857  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte On the bottom of Lindo Channel, about 1/10 mile east of Longfellow Avenue, Chico 65 Comment
  CHSC38700  Erythranthe glaucescens Vernon Oswald 1983-3-9 138 Butte Upper Bidwell Park, Chico, on the north clope ca. 600 ft w of the power lines abd 1600 ft n of the Upper Park Rd. 152 Comment
  CHSC44820  Erythranthe glaucescens R. Banchero 1980-6-2 183 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  CHSC3538  Erythranthe guttata John Francis 1996-3-21 87 Butte 1.8 miles from intersection of Hwy. Alt. 40 and Coal Canyon Rd., on Coal Canyon Rd. Comment
  CHSC44069  Erythranthe latidens Lowell Ahart 1986-4-19 5244 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC11896  Erythranthe primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville. 1550 Comment
  CHSC2263  Erythronium multiscapideum A. Riker 1897-5-1 Butte Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  CHSC88642  Erythronium multiscapideum Linnea Hanson 1983-4-6 179 Butte Plumas National Forest. At Pulga Bridge, Oroville side. 426 Comment
  UC119848  Erythronium multiscapideum Mrs. R. M. Austin 1883-1 320 Butte Davis Creek Comment
  UC1485466  Erythronium multiscapideum M. S. Taylor 1981-4-8 3516 Butte open reddish serpentine slope ca 1/10 mi s jct of Concow Road and Ponderosa Way (ca 7 mi n of Jarbo Gap on Hwy 70, ca 22 air mi n of Oroville); Pulga SW Quad 975 Comment
  CHSC51078  Erythronium purpurascens Pauleen Broyles 1987-7-19 1078 Butte Ca 7.2 km NE of Inskip. 1728 Comment
  CHSC39225  Eschscholzia caespitosa M. S. Taylor; K. Tharp 1983-3-11 5229 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
  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
  CHSC1196  Eschscholzia lobbii P. Delaplane 1965-3-30 13 Butte Along W. side of Cohasset Rd., 1/4 mi. S. W. of intersection of Cohasset Rd. and Keefer Rd. 213 Comment
  CHSC27672  Eschscholzia lobbii Robert A. Schlising 1978-4-23 3224 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE crossing of Mud Creek. Comment
  CHSC29008  Eschscholzia lobbii M. S. Taylor 1980-4-4 2453 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC4000  Eschscholzia lobbii L. R. Alexander 1967-4-2 4 Butte Found 1 mi. from Chico on Paradise road on left hand side of road. 60 Comment
  CHSC52448  Eschscholzia lobbii Germaine Belanger 1984-4-3 12 Butte 6 mi S of Oregon Gulch and Cherokee Rd jct. 396 Comment
  UCSB63594  Eschscholzia lobbii Cederborg, Mark 1995-4-18 Butte Ca. 200 yds w of Cherokee Rd; ca. 6 mi n of Oroville; Oroville U.S.G.S. Quadrangle; 15'. Ne 1/4 Sect 17. T20.R4E 390 Comment
  CDA43084  Eucalyptus tereticornis L. P. Janeway 2011-2-22 10226 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville. Comment
  CHSC79492  Euonymus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1996-7-9 13115 Butte Northern California. Plumas National Forest. On Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. [Lat./Long. on label is '39 46 N; 121 17 W']. 1175 Comment
  SEINET10453750  Euphorbia crenulata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4069 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 0.5 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland. 400 Comment
  SEINET10453765  Euphorbia hooveri Mary Susan Taylor 1980-1 Butte Comment
  CAS-BOT-BC202428  Euphorbia ocellata John Thomas Howell 1962-6-16 37586 Butte 3.5 mi. n. of Pentz 396 Comment
  CDA34133  Euphorbia peplus L. Ahart 2009-4-3 15532 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  RSA0106562  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 Butte On the northeast part of Horeshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  CHSC62356  Euphorbia spathulata B. Castro 1990-4-21 420 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. Near top of embankment at foot of canyon hillside. 146 Comment
  JEPS113325  Euthamia occidentalis L. P. Janeway 2006-10-4 8902 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  CHSC103996  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC38794  Festuca arundinacea Vernon Oswald 1983-5-9 462 Butte Upper Bidwell Park, Chico, along Yahi Trail where it follows the margin of Chico Creek e of Brown's Hole. 207 Comment
  SEINET10560623  Festuca elmeri A. Arthur Heller 1902-5-16 Heller 5562 Butte Marysville Buttes (rocky slope of East Butte) Comment
  CAS-BOT-BC278799  Festuca occidentalis Lowell Ahart 1987-7-8 5801 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga 1280 Comment
  CHSC98943  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  SEINET10822121  Festuca subulata Lowell Ahart 2008-6-2 Ahart 14807 Butte T19N, R6E, southwest 1/4 Section 4. On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 671 Comment
  CAS-BOT-BC77688  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  RSA755423  Filago gallica L. Ahart 2009-5-30 15809 Butte West side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile west of the intersection of Highway 32 and Ten Mile House Road. 441 Comment
  CHSC50552  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4343 Butte Headwaters of the east branch of Willow Creek, ca. 0.75 mi south of Humbug Summit, ca. 4.75 mi east of Jonesville. 1950 Comment
  CDA14053  Fragaria vesca G. F. Hrusa, T. D. Wilfred 1997-5-1 13700 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries enter from east. Comment
  SEINET10493572  Frangula purshiana Mary Susan Taylor 1981-5-13 Taylor 3703 Butte 4000 ft. T22N R6E ne sec 5, Pulga SE quad. Along creek crossing 22N66X (old RR bed) just N of Foreman Creek, ca. 1.5 mi S of Four Trees Rd, ca. 0.5 mi W of Elks Retreat on Oroville-Quincy Hwy. 1219 Comment
  CHSC46219  Frangula rubra Pauleen Broyles 1987-5-18 1023 Butte In town of Paradise. Along both sides of bicycle path (old RR bed) in remnant of Yellow Pine Forest. Comment
  POM76517  Fraxinus latifolia C. C. Bruce 1897-03 1789 Butte Little Chico Comment
  CHSC86423  Fritillaria affinis R. D. Fischer; Paul Maslin 2004-2-7 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609847E 4408885N. 381 Comment
  CHSC32632  Fritillaria eastwoodiae M. S. Taylor 1981-4-2 3475 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (downhill) of Magalia. 548 Comment
  CHSC77456  Fritillaria eastwoodiae Laura Bogni 1997-4-5 13 Butte Magalia grove. West side of Coutelenc rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SDSU19717  Fritillaria eastwoodiae Sean Ryan 2010-4-17 34 Butte 10 yards from south side of Nimshew Road, approximately 100 yards west of its intersection with Tika Lane, NW of Magalia. 750 Comment
  SD6589  Galium aparine Daniel Cleveland 1885-3-17 Butte Sutton House Comment
Read comments Oct 3 2007
  UC1564809  Galium bifolium V. Oswald and L. Ahart 1989-7-12 3849 .5 Butte road between Jones Meadow Lotts Lake (ca 3 air mi se of Philbrook Reservoir) 1901 Comment
  CHSC20972  Galium bolanderi M. S. Taylor 1975-9-12 906 Butte Ca. 24 mi NE of Chico, ca. 500 ft W of Hwy 32. 1066 Comment
  CHSC34219  Galium bolanderi M. S. Taylor 1981-5-29 3815 Butte Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. 853 Comment
  CHSC65586  Galium bolanderi L. P. Janeway 1995-6-1 4770 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  JEPS121970  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  CHSC51914  Galium grayanum var. grayanum L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3139 Butte Ridge SE from Snow Mtn. 2103 Comment
  SEINET10902549  Galium murale Mary Susan Taylor 1978-4-14 Taylor 1551 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  POM68694  Galium nuttallii var. tenue C. C. Bruce 1897-05 1934 Butte Little Chico. Comment
  UC1562420  Galium parisiense Lowell Ahart 1990-6-16 6512 Butte se side of dirt road near Forbestown Generator (se side of Forbestown Reservoir) 487 Comment
  SEINET10836840  Galium parisiense Mary Susan Taylor 1980-4-18 Taylor 2510 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  SEINET10500740  Galium porrigens var. tenue Mary Susan Taylor 1981-3-16 Taylor 3406 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
  SEINET10500640  Galium tricornutum Lowell Ahart 1991-5-8 Ahart 6649 Butte Along a small wash, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  UCD121927  Galium tricornutum D. B. Marcum 1969-4-12 20 Butte 18.6 miles north of Marysville on State Highway 70. 24 Comment
  POM367830  Galium trifidum H. F. Copeland 1930-07 1393 Butte Jonesville. Comment
  SEINET10500750  Galium trifidum var. pusillum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4196 A Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC11818  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville. 1500 Comment
  SEINET10500650  Galium triflorum Mary Susan Taylor 1978-7-19 Taylor 1740 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  JEPS98708  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte 5 air miles SW of Oroville (margin of the Thermalito Afterbay, W side of the access road to the boat ramp, W side of Larkin Road) 42 Comment
  CHSC108860  Garrya fremontii Lowell Ahart 2012-2-22 17755 Butte On the south side of Guardian Trail, about 20 yards west of Ten Mile House Road, about 1/4 mile west of High 32, about 9 miles northeast of Chico. 426 Comment
  CHSC77053  Garrya fremontii L. P. Janeway 2000-1-29 6630 Butte Cascade Range Foothills. Along old Hwy 32, 300 ft North of current Hwy 32, 9.4 mi north-northeast of Hwy 99/Chico. Ridge top between Big Chico Creek and Little Chico Creek. 518 Comment
  CHSC95071  Garrya fremontii L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-12 8688 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. Top of the ridge at 'Magalia Serpentine' about 40 m west of Coutelenc Road and 300 m north of Skyway. 713 Comment
  SD3490  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  SFV11166  Garrya fremontii M. L. Vincent 1964-4-10 560 Butte Highway 32, 10 miles northeast of Chico. 520 Comment
  SEINET10453490  Garrya fremontii Mary Susan Taylor 1979-10-13 Taylor 2260 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  CHSC56630  Gastridium phleoides T. B. Devine 1980-6-28 717 Butte At junction of Pentz Road and Pentz-Magalia Hwy. Comment
  CHSC82418  Gastridium phleoides Lowell Ahart 2002-5-7 9639 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS127202  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  CDA31993  Gastridium ventricosum L. Ahart 2008-5-12 14780 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC90296  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  UC600543  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville Comment
  CHSC113515  Gayophytum racemosum Lowell Ahart 2014-7-7 19602 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  POM193354  Gentiana simplex E. B. Copeland 1930-8-2 440 Butte Jonesville. 1500 Comment
  JEPS119997  Geranium carolinianum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17905 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC55799  Geranium core-core Vernon H. Oswald; Lowell Ahart 1991-11-2 4884 Butte North end of Long Bar Rd., just south of the boundary of the State Recreation Area on the south side of Thermalito Diversion Pool, near Oroville. 97 Comment
  JEPS115328  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
  CHSC42791  Geum macrophyllum L. P. Janeway 1987-7-4 2409 Butte Along W Branch Feather River at bridge 1.8 mi from Inskip. Meadow along side channel of the river. 1341 Comment
  CAS-BOT-BC459404  Geum macrophyllum H. F. Copeland 1920-8-29 139 Butte Jonesville 1219 Comment
  SEINET10483301  Geum macrophyllum Mary Susan Taylor 1978-6-24 Taylor 1639 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET12331839  Gilia capillaris Unknown 1985-1 5105 Butte 1 mi S of the Ponderosa Dam across the South Fork of the Feather River, about 3 mi NW of Forbestown 1585 Comment
  CHSC41373  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-7-11 3878 Butte NE part of county near Merrimac; roadsides. 1203 Comment
  POM264779  Gilia capitata subsp. mediomontana Lincoln Constance 1941-5-28 2827 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC40921  Gilia capitata subsp. pedemontana Lowell Ahart 1985-5-15 4989 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC90252  Gilia tricolor Camela J. Ott 1989-3-14 1 Butte Population in vic. of Salmon Hole, upper Bidwell Park, ca. 3 mi e of Chico Municipal Golf Course. 106 Comment
  CHSC36069  Gilia tricolor subsp. tricolor Daniel K. Parker 1981-4-21 4 Butte Ca. 75 m w Cherokee Road, 9.4 km ssw Cherokee. Meadow. 380 Comment
  UC172852  Gilia tricolor subsp. tricolor A. A. Heller 1913-4-7 10724 Butte hills six mi n Oroville; n of Oroville Comment
  CHSC48011  Githopsis pulchella subsp. campestris Vernon Oswald 1983-5-21 521 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.6 mi e of the power lines. 341 Comment
  CHSC50106  Githopsis pulchella subsp. campestris Vernon Oswald 1990-4-24 4170 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  UC890660  Githopsis specularioides A. A. Heller 1915-4-20 11853 Butte 3 mi from Chico (Chico-Centerville road) Comment
  CHSC51001  Glinus lotoides Lowell Ahart 1990-7-2 6537 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS103370  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS124255  Glinus lotoides Lowell Ahart 2015-10-26 20592 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC435023  Glinus radiatus C. C. Parry 1882-11-1 s.n. Butte Chico Comment
  JEPS121950  Glyceria borealis Lowell Ahart 2014-7-7 19585 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC78223  Glyceria declinata Lowell Ahart 2000-5-21 8377 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
  UCD85124  Glyceria elata G. F. Hrusa; T. D. Wilfred 1996-7-9 13189 Butte Plumas National Forest. On 23N15, approx. 100 m. to S of Hwy 162 across from entrance to Rogers Cow Camp. 1250 Comment
  CHSC44455  Glyceria occidentalis Lowell Ahart 1988-5-29 6014 Butte Bottom of a wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 4 miles north-east of Honcut. 60 Comment
  SEINET10905047  Gnaphalium Mary Susan Taylor 1981-5-6 Taylor 3625 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  CHSC60953  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC97727  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  JEPS7404  Gnaphalium palustre Rimo Bacigalupi with Larry R. Heckard 1951-8-7 3476 Butte 0.3 mi w of Jonesville (on roadcut at crossing of Butte Creek, along road to Butte Meadows) 1524 Comment
  CHSC28834  Gratiola ebracteata J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 426 Butte Top of North Table Mt, ca 1.0 mi n of jct of e edge of Mt and Cherokee Rd. 381 Comment
  NY43531  Grindelia hirsutula var. hirsutula S. Bianco 1995-9-23 1030 Butte Along dirt trail that extends from Ishi Trail in Concow 762 Comment
  CHSC47986  Hackelia californica Vernon Oswald 1983-7-19 884 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. In a meadow. 1524 Comment
  CHSC28407  Hamamelis vernalis J. Battagin 1979-9-13 Butte Ca. 5 air mi due e of Big Bend Mt. Comment
  JEPS120074  Hedera helix Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC28507  Helenium puberulum M. S. Taylor; J. D. Jokerst 1979-10-13 2255 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 5 mi e of Paradise, ca. .8 mi n of its jct with Concow Rd. 426 Comment
  CHSC32601  Helianthella californica var. nevadensis J. D. Jokerst 1980-4-19 617 Butte Humbug Rd, 6.6 mi N of the Centerville Cemetary (Butte CR Canyon). Comment
  CHSC36557  Helianthus annuus L. Ahart 1982-7-10 3663 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 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
  CHSC83054  Heliotropium curassavicum Lowell Ahart 2002-10-17 9986 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
  SD175807  Heliotropium europaeum D. G. Kelch 2006-8-2 06 340 Butte Along butte Cree, north of Durham-Dayton Highway. 46 Comment
  CHSC357  Hemizonia congesta subsp. luzulifolia V. Holt 1944-9-15 Butte Near Chico. 57 Comment
  POM219506  Hemizonia pungens subsp. pungens H. F. Copeland 1923-8-13 545 Butte Nelson. Comment
  CHSC111117  Herniaria hirsuta var. hirsuta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-17 18070 Butte On the west side of the poor road (horse trail), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, lower Bidwell Park, Chico. 76 Comment
  CHSC36119  Hesperevax caulescens Mary Banchero 1979-4-18 17 Butte Northernmost Butte County, ca. 0.5 mi n of Pine Creek, nw of Singer Creek; 7 mi nw of Nord on Cana-Pine Creek Road. 56 Comment
  CAS-BOT-BC175997  Hesperolinon californicum Lowell Ahart 1977-5-11 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1212423  Hesperolinon micranthum Mrs. C. M. Wilder 1912-6-9 1711 Butte Paradise Comment
  UCD110536  Hesperolinon micranthum E. B. Copeland 1931-7-12 656 Butte Jonesville, between Jones and North Willow Creeks. 1700 Comment
  SEINET10493822  Hesperolinon micranthum Lowell Ahart 1985-6-30 Ahart 5085 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC19721  Heteranthera limosa Lowell Ahart 1974-8-29 1618 Butte Found in a rice field. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44276  Heterocodon rariflorum Vernon Oswald 1988-6-14 3379 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Peak. 890 Comment
  JEPS115569  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC3603  Heteromeles arbutifolia Gerry Carrauthers 1966-2-28 23 Butte Ca. 10 mi N.E. of Chico at end of dirt road beyond Bidwell Golf Course ca. 5 mi. Comment
  CHSC6159  Heterotheca grandiflora J. Wheeler 1968-2-15 281 Butte Southern Pacific Railroad embankment at Coal Canyon. 228 Comment
  SEINET10839198  Heterotheca grandiflora Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4293 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC83120  Heterotheca oregona var. compacta Lowell Ahart 2002-9-27 9939 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10970395  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 Ahart 4019 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CAS-BOT-BC312345  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CHSC38521  Hoita macrostachya Vernon Oswald 1983-7-28 936 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 207 Comment
  CHSC4308  Holcus lanatus R. L. Smith 1966-5-20 4 Butte Butte Creek Canyon, Honey Run Rd. 4 mi. e of S Skyway. Comment
  JEPS110329  Holcus lanatus Lowell Ahart 2006-7-25 13056 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC38363  Holocarpha virgata subsp. virgata Vernon Oswald 1983-10-2 1048 Butte Upper Bidwell Park, Chico, on the north rim ca. 200 ft e of the head of the western intermittent stream which flows into Sycamore Creek. In the middle of the North Rim Trail. 304 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
  CHSC4410  Hordeum murinum subsp. glaucum 1966-5-25 Butte Arcadian Ave. across from Ed.-Psy. Building, Chico. Vacant lot. Comment
  CHSC92553  Hordeum murinum subsp. leporinum Lowell Ahart 2005-12-11 12518 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CAS-BOT-BC143974  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 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
  CHSC116223  Horkelia tridentata var. tridentata Lowell Ahart 2015-6-16 20239 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CAS-BOT-BC536259  Horkelia tridentata var. tridentata H. C. Cantelow 1940-5-10 s.n. Butte 2.3 miles west of Brush Creek Ranger Station Comment
  CHSC60978  Hosackia oblongifolia Lowell Ahart 1993-6-26 7009 Butte On the north side of the dirt road, about 1/4 mile west of Lost Creek Reservoir. Meadow. 1036 Comment
  CHSC885  Hosackia pinnata L. Nelson 1935-5-25 Butte Cohasset. 609 Comment
  CHSC60985  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC87548  Hydrophyllum occidentale R. D. Fischer 2004-3-5 71 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found 0.4 miles west of 10 Mile House Road parking area on south side of road cut-bank. UTM: 10609902E 4406833N. 396 Comment
  UCD119493  Hydrophyllum occidentale M. S. Taylor 1980-5-4 1997 A Butte Along Millsap Bar Rd., ca. 4 mi ne of its jct with Brush Creek Rd, ca 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC400829  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  HSC100730  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte E side of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  UC1442629  Hypericum anagalloides Lowell Ahart 1978-9-16 Butte along North Honcut Creek Peter Ahart Ranch; Honcut, Peter Ahart Ranch 50 Comment
  CHSC5954  Hypericum calycinum M. MacArthur 1968-6-17 183 Butte Chico State College Campus, SE wall of Life Science bld. 60 Comment
  CHSC3323  Hypericum concinnum Robert L. Smith 1966-5-22 48 Butte Paradise, 5 miles SW of Post Office. Comment
  CHSC48480  Hypericum formosum var. scouleri Vernon Oswald 1983-7-26 917 Butte Near Soda Springs Campground off of Calif. Hwy 32, 18.1 mi n=e of Forest Ranch. Growing in a wet, marshy spot beside Chico Creek. 1158 Comment
  SEINET10472163  Hypericum formosum var. scouleri Mary Susan Taylor 1977-7-15 Taylor 1403 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  CHSC76281  Hypericum mutilum Lowell Ahart 1999-9-21 8263 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
  JEPS124322  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CHSC52346  Hypericum perforatum Pauleen Broyles 1987-5-21 1045 Butte Vina Plains Preserve. Eroded sandstone banks along Pine Creek. Comment
  CAS-BOT-BC312932  Hypochaeris glabra John Thomas Howell; Gordon H. True 1967-6-13 42592 Butte Oroville 51 Comment
  SEINET10473834  Hypochaeris glabra Mary Susan Taylor 1980-4-6 Taylor 2454 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC45691  Hypochaeris radicata Vernon Oswald; Lowell Ahart 1987-8-5 3176 Butte Hwy 32, 3.3 mi s of Lomo at the 33.7 mi road marker. 1036 Comment
  UC879867  Ipomopsis aggregata A. A. Heller 1917-7-29 12857 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC133560  Iris hartwegii Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC35322  Iris macrosiphon M. S. Taylor; K. Tarp 1982-4-8 4289 Butte Along n side of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC36899  Iris macrosiphon M. C. Earley 1982-4-18 16 Butte Ca. 8.5 mi. ese of Chico. 114 Comment
  SEINET10469751  Iris macrosiphon Mary Susan Taylor 1978-5-6 Taylor 1577 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10932892  Isoetes howellii Mary Susan Taylor 1980-5-24 Taylor 2738 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC32607  Isoetes nuttallii J. D. Jokerst; R. A. Schlising 1981-3-23 1267 Butte Ca 100 m S of Neil Rd. Comment
  CAS-BOT-BC112445  Isolepis cernua Lowell Ahart 1989-5-23 6270 Butte In Dutch Ravine ca. 1/8 mi N of Swedes Flat Rd, ca. 1 1/2 mi E of the Oroville Bangor Hwy 426 Comment
  CHSC97062  Juncus acuminatus Lowell Ahart 2007-7-27 14396 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC2213  Juncus balticus I. Boyd 1949-5-20 Butte Centerville road just beyond Dunford's. 152 Comment
  SEINET10872268  Juncus brachyphyllus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4135 Butte T20N R5E sw sec 10. Near edges of Ponderosa Way (Big Ridge Rd), near East Fork of Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CDA5727  Juncus bufonius var. bufonius L. Ahart 2005-4-14 11719 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC26800  Juncus bufonius var. bufonius M. S. Taylor; M. Hayes 1978-4-14 1559 Butte Vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC44244  Juncus bufonius var. bufonius V. Oswald; L. Ahart 1988-7-13 3578 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  CHSC51026  Juncus bufonius var. bufonius Lowell Ahart 1990-7-4 6545 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC6131  Juncus bufonius var. bufonius E. Parreno 1968-5-13 110 Butte E Boundary of Upper Bidwell Park at the left of the road's end. Chico. Comment
  CHSC78327  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte On the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-norhing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  UCD141409  Juncus bufonius var. bufonius L. Ahart 1978-5-1 1683 Butte Peter Ahart Ranch, Honcut, about 2.25 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 120 Comment
  CHSC27063  Juncus bufonius var. congestus Lowell Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. On the bottom of a swale. 50 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
  JEPS88259  Juncus bufonius var. congestus Vernon H. Oswald and Lowell Ahart 1996-5-27 7658 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (sw corner of Tract 3.4, Sanctuary II); Sacramento River Wildlife Refuge, Llano Seca Unit 32 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  UC1564728  Juncus bufonius var. occidentalis V. Oswald and L. Ahart 1989-7-21 3868 Butte ca 1 mi w Jonesville (junction of Willow and Colby Creeks, on the w side of Colby creek, on the n side of Humbold Rd) 1487 Comment
  CHSC112909  Juncus capitatus B. Castro; Robin Carter 2011-4-29 1871 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC116708  Juncus capitatus Lowell Ahart 2016-5-15 20833 Butte On the very west edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC50808  Juncus dubius Vernon Oswald; Lowell Ahart 1990-7-31 4419 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Cocow. Along the creek at the foot of the meadow. 1097 Comment
  CHSC26750  Juncus effusus subsp. pacificus M. S. Taylor; M. Hayes 1977-8-16 1449 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC41304  Juncus effusus subsp. pacificus S. C. Morey 1983-7-22 540 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC84202  Juncus effusus subsp. pacificus Lowell Ahart 2003-6-30 10335 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  JEPS113849  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 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 53 Comment
  JEPS114880  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  RSA729998  Juncus effusus subsp. pacificus L. Ahart 2007-7-8 14265 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 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
  JEPS113855  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 762 Comment
  CDA39192  Juncus howellii T. C. Fuller 1962-7-12 9200 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC41441  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Along the sides and on the bottom of small vernal pools, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC27049  Juncus leiospermus var. leiospermus Lowell Ahart 1978-4-17 1644 Butte Table Mountain, 6 mi n of Oroville. On the bottom of a small vernal pool. The pool is on top of Table Mountain where it is open and where people park their cars to look at the flowers. The park area is the largest on the top of the mountain. 400 Comment
  CHSC93494  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12603 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 327 Comment
  HSC100809  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte ~100 yd. E of Cherokee Rd., ~200 yd. NE of parking area, North Table Mountain, 4.5 (air) mi. NE of Oroville. 386 Comment
  JEPS122233  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  POM219308  Juncus mexicanus H. F. Copeland 1931-6-11 1514 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CHSC41288  Juncus nevadensis S. C. Morey 1983-7-21 495 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC30512  Juncus occidentalis J. D. Jokerst 1980-3-23 492 Butte 100 m W of Hwy 70 at the S end of the bridge over West Branch Feather River. Comment
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 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
  JEPS118343  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the north edge of a good forest road, on the west edge of Know-northing Creek, about 150 yards north of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  UC600811  Juncus orthophyllus H. F. Copeland 1930-7-28 1371 Butte near Butte Creek House (Government Trail, neighborhood of Jonesville); Jonesville 1828 Comment
  POM110898  Juncus oxymeris C. C. Bruce, J. Bruce 1897-05 1884 Butte Chico ion Humboldt road Comment
  JEPS113768  Juncus patens Lowell Ahart 2007-7-15 14305 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 20 yards southeast of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  JEPS113860  Juncus tenuis Lowell Ahart 2007-7-11 14293 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
  JEPS94063  Juncus tenuis Lowell Ahart 1998-6-3 7963 Butte ca. 7 mi. (air) n. Oroville (n.w. of the lone tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 403 Comment
  CHSC96889  Juncus triformis Lowell Ahart 2007-6-12 14062 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  RSA0080124  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte About 1/4 mile east of Little Bald Rock, about 2 miles (air) northeast of Oroville. 1009 Comment
  JEPS121377  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte above Oroville-Qunicy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill Comment
  CHSC59019  Juncus usitatus Lowell Ahart 1992-7-23 6828 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
  CHSC97112  Juncus usitatus Lowell Ahart 2007-7-31 14401 Butte Along a drain ditch, on the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 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
  JEPS113763  Juncus usitatus Lowell Ahart 2007-7-31 14401 Butte Along a drain ditch, on the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale 26 Comment
  JEPS113744  Juncus usitatus Lowell Ahart 2007-7-5 14250 Butte S side of a drainage ditch, N side of Evans Reimer Road, about 1 1/4 mi E of Pennington Road, about 4 3/4 mi (air) SW of Gridley 22 Comment
  CHSC45224  Juniperus californica Lowell Ahart 1983-4-10 3922 Butte About 1 1/2 miles north-east of Highway 99 and Pentz Road. 91 Comment
  POM14660  Keckiella breviflora subsp. glabrisepala A. A. Heller, H. E. Brown 1902-5-6 5471 Butte Berry Canyon (near Clear Creek). Comment
  SEINET10547830  Keckiella breviflora subsp. glabrisepala Mary Susan Taylor 1980-6-14 Taylor 2883 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  JEPS103604  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CDA2213  Koeleria gerardi Sterling O. Mattoon 1971-4-27 Butte 6.9 miles east of Chico. 0 Comment
  CHSC6160  Koeleria phleoides E. Parreno 1968-4-15 55 Butte NE of Municipal Golf Course in top on slope of ridge area in Upper Bidwell Park, Chico. Comment
  CHSC48823  Kumlienia hystricula Vernon Oswald 1985-4-1 1692 Butte Oroville-Quincy Rd. 0.8 mi s of Canyon Creek Bridge. On the edge of an intermittent stream. Comment
  JEPS107554  Kyllinga brevifolia Lowell Ahart 2005-8-14 12332 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
  CHSC102741  Lactuca saligna Lowell Ahart 2009-8-3 16254 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10971245  Lactuca serriola Mary Susan Taylor 1979-11-11 Taylor 2283 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC105204  Laennecia coulteri K. R. Stern 1972-9-19 3785 Butte Vic. Eddy Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CAS-BOT-BC341301  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CAS-BOT-BC341305  Lagophylla glandulosa H. M. Hall 1914-8-1 9829 Butte Foothills near Bidwell Bar, (Mt. Ida) Comment
  CHSC746  Lamium amplexicaule M. Davidson 1929-3-21 Butte Foothill field. 54 Comment
  CHSC7100  Lasthenia californica Nancy Wiseman 1969-4-17 Butte 50 yds n of Skyway ca. 1 mi e of Chico. Comment
  SD8904  Lasthenia californica Mrs. R. M. Austin 1883-1 Butte Comment
  SEINET10473882  Lasthenia californica Mary Susan Taylor 1980-3-1 Taylor 2352 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
  UCSB63629  Lasthenia chrysostoma Richard Ernenwein 1995-10-23 135 Butte collected 2.3 mi E, along the S-side of Humboldt Road, E of Chico U S Highway 99 - Humboldt Road, , and Chico Comment
  CHSC23466  Lasthenia fremontii J. R. Lee 1974-4-22 3 Butte At edge of pond 1.6 mi e of Chico city limits on the Skyway. The pond was 10 yds n of the roadside. 76 Comment
  SEINET10475348  Lasthenia fremontii Mary Susan Taylor 1980-3-28 Taylor 2400 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  SEINET10971150  Lasthenia fremontii Mary Susan Taylor 1974-4-24 Taylor 188 Butte Junction of Broyles Road and Hwy 99, ca. 9 mi N of Chico. Valley Grassland. 61 Comment
  CHSC30059  Lasthenia glaberrima R. A. Schlising 1980-4-27 3575 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 (e to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC8120  Lasthenia platycarpha M. Banning 1969-3-28 26 Butte 12 mi. N. Chico on Hwy 99. 76 Comment
  SEINET10871171  Lathyrus Mary Susan Taylor 1981-5-22 Taylor 3800 Butte T23N R5E sw/se sec 29, Pulga quad. Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, ca. 5 air mi E of Magalia. 3300 ft. 1006 Comment
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  CHSC112690  Lathyrus latifolius Lowell Ahart 2013-7-1 18814 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC860  Lathyrus nevadensis L. Nelson 1935-4-27 Butte Deer Creek Canyon. 914 Comment
  CAS-BOT-BC213287  Lathyrus sulphureus Lowell Ahart 1983-5-13 3989 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
  CHSC96809  Lathyrus sulphureus Lowell Ahart 2007-4-30 13708 Butte On the west side of Jordan Hill Road, about 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  CHSC20054  Layia fremontii M. S. Taylor 1975-4-18 489 Butte Around vernal pool, ca. 1/2 mi e of Hwy 99, on Keefer Rd, ca. 1/2 mi ne of junction of Hwy 99 and Keefer-Lassen Rd. Comment
  CAS-BOT-BC321753  Layia fremontii A. A. Heller 1914-3-28 11235 Butte Hills 8 miles N of Oroville Comment
  UC179643  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte 12 mi n of Chico Comment
  CAS-BOT-BC274354  Leersia oryzoides Lowell Ahart 1987-7-3 5777 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA42868  Leontodon saxatilis subsp. longirostris L. 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
  CHSC29836  Lepechinia calycina M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2768 Butte W side of Kunkle Reservoir, ca. 100 ft e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  UC215491  Lepechinia calycina Helen M. Edwards Jun 1917 Butte De Sabla Comment
  SEINET10498876  Lepechinia calycina Mary Susan Taylor 1980-5-31 Taylor 2768 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
  CHSC35764  Lepidium appelianum R. A. Schlising; J. D. Jokerst 1982-6-4 4287 Butte N of Oroville and n of Jarbo Gap along Hwy 70 above Feather River Canyon. Roadside. Comment
  JEPS87615  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
  CAS-BOT-BC89880  Lepidium nitidum A. A. Heller 1919-3-29 13096 Butte Cherokee mine. Comment
  SEINET11986394  Lepidium nitidum B. K. Madsen 1970-1 17 Butte along Wildwood Ave., ca 0.5 mi E of intersection of Wildwood Ave & Manzanita Ave, Upper Bidwell Park 85 Comment
  CHSC101082  Lepidium nitidum var. nitidum Lowell Ahart; John Dittes 2009-3-20 15506 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC38421  Lepidium nitidum var. nitidum Vernon Oswald 1983-2-9 66 Butte Upper Bidwell Park, Chico, near the Rod and Gun Clubhouse at Horseshoe Lake. 103 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
  CAS-BOT-BC12845  Lepidium pinnatifidum Lowell Ahart 1982-7-10 3664 Butte Gray Lodge check in station, about 12 miles southwest of Gridley. Parking area. 35 Comment
  UC1594675  Lepidium strictum Lowell Ahart 1992-3-28 6741 Butte near s side Oroville Dam spillway (on the top of Oroville Dam); Oroville Dam 274 Comment
  UC569494  Leptochloa fascicularis H. S. Yates 1936-8-14 6121 Butte 3 mi nnw Nelson; Chico Quadrangle 30 Comment
  CHSC92505  Leptochloa fusca subsp. uninervia Lowell Ahart 2005-12-11 12517 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC32132  Leptosiphon androsaceus L. Ahart 1976-4-7 1036 Butte Hillside near the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC92564  Leptosiphon bicolor L. P. Janeway 2005-3-10 8353 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  POM219377  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte Jonesville, Woods above Butte creek meadows. 1829 Comment
  CHSC46222  Leptosiphon filipes Pauleen Broyles 1987-6-19 1057 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  CHSC85684  Leptosiphon filipes G. F. Hrusa; T. D. Wilfred 1996-7-9 13171 Butte Sierra Nevada--Plumas National Forest. On roadsides. Approx. 1 m. on 22N89 amd 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. [Lat./Long. on label is '39 degrees 45' N; 121 degrees 18' W']. 1100 Comment
  RSA31647  Leptosiphon filipes A. A. Heller 1938-4-11 15023 -a Butte Stony hill near the Rifle Range eas[t] of Chico Comment
  CHSC29819  Leptosiphon parviflorus M. S. Taylor 1980-4-16 2490 Butte Lake Oroville State Recreation Area, ca. 1/2 mi se of Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  UCSC009430  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte Road cut on the east side of Vinton Gulch Road, about 9 1/2 miles (air) north of Oroville 308 Comment
  CAS-BOT-BC341784  Lessingia nemaclada John Thomas Howell 1959-9-26 35084 Butte Arch Rock, North Fork Feather River 457 Comment
  CDA34757  Lessingia nemaclada L. Ahart 2009-6-3 15965 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC110236  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 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
  CHSC88092  Lessingia nemaclada Jenny Marr 1993-7-1 98 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine rock outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CDA8197  Lessingia nemaclada var. mendocina T. C. Fuller 1958-7-7 1913 Butte 1 mile north of Pulga Station. 0 Comment
  UC1287454  Lessingia virgata Willard Spence 1962-7-24 731 Butte along alternate Rt. 40 4 mi s Oroville Comment
  CAS-BOT-BC334597  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of teh Feather River near the Poe Power House about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC3864  Leucojum aestivum Gary Dutton 1966-3-16 121 Butte C. S. C., N. E. of science bld. Along Chico Creek. Comment
  SEINET12332637  Leucophysalis nana L. P. Janeway, Schlising, R. A. 1988-1 2918 Butte just NW of Summit Lake 1951 Comment
  CHSC43877  Leucothoe davisiae L. P. Janeway 1987-6-27 2361 Butte E slope of Bald Mtn, along the Concow Road. 1694 Comment
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  CHSC6594  Lewisia rediviva G. Nielsen 1968-4-20 Butte On Table Mt. 5 mi s of Cherokee on rd. over Table Mr. 609 Comment
  SEINET10863158  Lewisia triphylla Mary Susan Taylor 1976-5-3 Taylor 1103 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
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC42589  Ligusticum grayi Vernon Oswald 1985-8-28 1932 Butte Scotts John Rd. 0.2 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CHSC106058  Ligustrum lucidum Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17041 Butte Golf Course, about 20 yards west of the club house, Upper Bidwell Park, about one mile east of the east edge of Chico. 89 Comment
  JEPS117406  Lilaea scilloides Lowell Ahart 2010-5-16 16683 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 375 Comment
  CAS-BOT-BC130567  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC509329  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  CHSC46236  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-7-5 1073 Butte Ca 7 km n of Inskip, ca 0.4 km s of Bull Hill Rd., along Coon Creek. 1500 Comment
  CHSC27913  Lilium pardalinum subsp. shastense M. S. Taylor 1978-7-19 1735 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC24949  Limnanthes alba V. L. Keeran 1976-4-21 9 Butte Ca. 115 m e of Cohasset Road and 1.15 km sw of Cohasset. 400 Comment
  SEINET10495210  Limnanthes alba Mary Susan Taylor 1978-5-7 Taylor 1600 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  HSC97149  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 Butte 'Meghdadi Property' in SE Chico, ca. 0.5 km N of Doe Mill Rd., ca. 0.5 km E of S end of Potter Rd., and 0.25 km W of old stone fence. Comment
  CHSC111363  Limnanthes alba subsp. versicolor Lowell Ahart 2012-5-4 17986 Butte About 200 feet south of stream in Beatson Hollow, about 1 1/4 mile NW of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of 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
  CHSC93480  Limnanthes douglasii subsp. nivea Lowell Ahart 2006-4-28 12542 Butte Along a small stream, south part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  CHSC62831  Limnanthes douglasii subsp. rosea Ella Icard 1893-4-1 Butte Comment
  HSC87204  Limnanthes douglasii subsp. rosea R. J. Radzavage 1979-4-17 15 Butte Jct. Hwy. 99E and Boyles Rd., ca. 11 mi. N of Chico 61 Comment
  CHSC48594  Limnanthes floccosa subsp. californica Vernon Oswald 1984-3-24 1104 Butte Chico Municipal Airport, ca. 200 ft n-e of the e end of Piper Ave. 82 Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  UC1397276  Limnanthes floccosa subsp. californica T. Niehaus 1965-3-28 371 Butte Table Mountains Comment
  UC1748332  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3241 Butte N of Hwy. 32 across from church 76 Comment
  CHSC32591  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1981-3-21 1257 Butte Initial slopes delineating the beginning of the foothills, ca. 0.5 mi N of Horseshoe Lake. Comment
  CHSC55505  Limnanthes floccosa subsp. floccosa Pat Kelly 1991-3-31 Butte Arroyo Chico.' Along the southern branch of Sycamore Creek, from a few hundred feet east of the mouth of the Diversion Channel eastward to the power lines (ca 0.8 mi long). 82 Comment
  SEINET10964491  Limosella Mary Susan Taylor 1980-5-31 Taylor 2764 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
  JEPS123907  Limosella acaulis Lowell Ahart 2015-4-24 20068 Butte About 3/4 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10496786  Linanthus bakeri Mary Susan Taylor 1980-5-31 Taylor 2760 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
  UC1377648  Linanthus bicolor John Ingram and Arlynn Ingram 1960-4-5 294 Butte about 2 mi s Paradise (along Neal Road) Comment
  UC133948  Linanthus pygmaeus Mrs. R. M. Austin Mar 1896 168 Butte e of Chico Comment
  SEINET10569965  Lindernia anagallidea Mary Susan Taylor 1978-7-22 Taylor 1845 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  CHSC97400  Lindernia dubia var. anagallidea Robert Fischer 2006-6-18 1006 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  CHSC48015  Linnaea borealis var. longiflora Vernon Oswald 1985-6-17 1845 Butte Quartz Creek' Rd., 0.4 mi S of Fall River, ca. 6 air miles NE of Feather Falls. 1066 Comment
  CHSC31954  Lipocarpha aristulata J. D. Jokerst; R. A. Schlising 1980-7-2 926 Butte Adjacent to Garland Rd. 1.3 mi SE of Hwy 32 (ca. 4 airline miles NNE of Forest Ranch). Comment
  CHSC65525  Listera convallarioides L. P. Janeway 1995-8-5 4890 Butte Along West Branch Feather River about 0.1 mi above Snag Lake. 1725 Comment
  CHSC2456  Lithophragma parviflorum var. parviflorum R. Carter 1965-3-13 161 Butte Found on North Table Mt. ca. 45 yds. SE of point where old Cherokee Rd. comes over rim of table at base of lava cliffs. 304 Comment
  CHSC7108  Lithophragma parviflorum var. trifoliatum James M. Watson 1969-3-31 4 Butte 4.3 mi e of upper Bidwell Park entrance 100 yds. s of road at edge of canyon. 213 Comment
  CHSC29287  Lithospermum californicum R. A. Schlising 1980-5-23 3597 Butte N of Lake Oroville State Rec. Area in Lassen Nat. Forest, 3.5 mi e junction Hwy 70 and Big Bend Road and from here, at community of Big Bend, 1.0 mi s; roadside. Comment
  JEPS102332  Lobularia maritima Lowell Ahart 2001-4-15 8722 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  CHSC38349  Logfia filaginoides Vernon Oswald 1983-4-18 336 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Base of ridge along rim of a volcanic cap. 353 Comment
  CHSC102424  Logfia gallica Lowell Ahart 2009-5-30 15809 Butte On dry rocky soil, on the west side of Guardian's Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road. 440 Comment
  CAS-BOT-BC283388  Lolium multiflorum Lowell Ahart 1981-5-24 2834 Butte Peter Ahart Ranch, ca 2 miles N and 2 miles E of Honcut 50 Comment
  CHSC101799  Lolium multiflorum Lowell Ahart 2009-5-8 15669 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
  CHSC107077  Lolium multiflorum V. Lockie 2010-3-2 Butte Upper Bidwell Park. Found near the Horseshoe Lake area. 103 Comment
  CHSC4300  Lolium multiflorum V. Hagaman 1966-4-27 Butte Chico State Campus. Comment
  JEPS88228  Lolium multiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7734 Butte U.S. Fish and Wildlife Service parcel btw 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary, Sacramento River Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge 28 Comment
  CAS-BOT-BC271210  Lolium temulentum John Thomas Howell 1963-6-2 39383 Butte Along highway near Pulga, Sierra Nevada Comment
  JEPS119608  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2012-4-9 17833 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  SEINET10454776  Lomatium humile Mary Susan Taylor 1979-5-6 Taylor 1992 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UCD150864  Lomatium marginatum var. marginatum W. R. Powell 1968-5-17 1508 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  UC1212523  Lomatium nevadense var. parishii E. B. Copeland 1930-6-27 Butte vicinity of Jonesville; Lassen National Forest 1500 Comment
  CHSC29999  Lomatium utriculatum L. Ahart 1980-4-21 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33347  Lomatium utriculatum Laurel L. Huey 1980-4-21 4 Butte Ca. 80 m se of Butte Creek at Covered Bridge. 125 Comment
  CHSC48017  Lonicera hispidula Vernon Oswald; M. S. Taylor 1985-5-30 1790 Butte Four Trees Rd. 0.5 mi E of Hwy 70. 536 Comment
  CHSC88995  Lonicera involucrata H. Gray 1999-6-4 Butte Plumas National Forest. Swamp off Zink Road. 731 Comment
  CHSC73410  Lonicera involucrata var. involucrata B. Castro; L. Gehrung 1995-6-20 578 Butte Ca 4 air mi NE of Feather Falls towards northeastern end of Watson Ridge, in moist N-trending ravine (within Mixed Conifer forest) S of sharp bend in USFS Rd 22N24. 1173 Comment
  SEINET10970288  Lotus Mary Susan Taylor 1977-6-25 Taylor 1368 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  JEPS87385  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  UC1609419  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  RSA719534  Lotus denticulatus Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12877 Butte East of Chico along Route 32. Comment
  UC726261  Lotus denticulatus A. A. Heller 1940-5-13 15616 Butte 3 mi w Chico (along State Highway 32) Comment
  SEINET10973161  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-4 Taylor 3593 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 Comment
  CDA34221  Lotus micranthus L. Ahart 2010-6-9 16778 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  SEINET3729652  Lotus scoparius A. A. Heller 1923-6-9 13741 Butte Oroville Comment
  UC1594550  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  SEINET2062321 Image available Lotus unifoliolatus Marc Mittleman 1980-8-1 225 Butte L:ittle Chico Creek, adjacent to China Garden Springs. 262 Comment
  CHSC112875  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  SD58289  Ludwigia palustris W. L. Jepson 1939-8-17 19457 Butte Feather River bottom, near Oroville, 46 Comment
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  UC726545  Lupinus A. A. Heller 1942-6-5 16497 Butte about halfway between the junction Middle Fork and West Branch of the Feather River Highway; halfway bet jct of Middle Fork and West Branch Feather River Comment
  POM24982  Lupinus albifrons var. eminens C. C. Bruce 1897-05 2027 Butte Little Chico. Comment
  JEPS108562  Lupinus andersonii L. P. Janeway, Matt Brown, B. Castro, Samantha Mackey Hillaire 2005-6-21 8427 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Lockerman Creek and Cedar Creek, 1.4 km northeast of confluence of Lockerman and Camp Creeks 1201 Comment
  CHSC90190  Lupinus bicolor Jody Henderson 1989-4-25 5 Butte 100 yds. n of Rock Creek, 6 mi. n of Chico, Hwy 99 n to Meridian to Kilkare Ln., 100 yds. s of Kilkare Ln. 72 Comment
  UC204553  Lupinus bicolor A. A. Heller 1914-3-13 11198 Butte near the western base Table Mountain (hills eight mi n of Oroville); near western base of Table Mountain Comment
  UC725527  Lupinus bicolor A. A. Heller 1939-4-10 15376 Butte Lower part of the Chhasset road near the foot of the grade near Rock Creek. Comment
  UC726014  Lupinus bicolor A. A. Heller 1940-4-28 15562 Butte opposite the golf links e Chico; e of Chico Comment
  CDA27415  Lupinus bicolor T. C. Fuller 1958-4-15 5006 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  SEINET10484925  Lupinus bicolor subsp. tridentatus Frediani 1981-3-24 FREDIANI 2 Butte Petals bluish with white banner. N side of butte creek, 6.2 mi. E of hwy 99 and skyway inerchange; ca. 2 Mi. Se Of chico. A foothill woodland. 107 Comment
  CHSC36838  Lupinus latifolius var. columbianus M. S. Taylor; L. Ahart 1981-8-16 4197 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  UC1609313  Lupinus lepidus var. sellulus Lowell Ahart 1993-6-26 7042 Butte about 1/4 mi n Jackass Flat (Mooreville Ridge, about 1 1/4 mi (air) nw of Lost Creek Reservoir); Mooreville Ridge, nw of Lost Creek Reservoir 1188 Comment
  UC726764  Lupinus microcarpus var. microcarpus A. A. Heller 1940-5-13 15618 Butte three mi w Chico; w of Chico Comment
  UCD109079  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  RSA424768  Lupinus nanus var. apricus Aaron Liston, M. Blumler 1987-4-24 658 -6 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC103726  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  UC865362  Lupinus pachylobus A. A. Heller 1938-4-23 15048 Butte on the Feather River Highway between the Las Plumas Road and summit; on the Feather River Highway Comment
  JEPS121988  Lupinus polyphyllus var. burkei Lowell Ahart 2014-7-2 19536 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  SBBG128005  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte ca. 70 yards E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1917 Comment
  POM118225  Lupinus sellulus var. lobbii H. M. Hall 1912-7-24 320 Butte Middle Fork of Feather River. 1280 Comment
  CHSC32605  Lupinus succulentus J. D. Jokerst 1981-3-28 1270 Butte Butte College Campus along entrance in the vicinity of the eastern-most parking lot. Comment
  CAS-BOT-BC436645  Luzula comosa var. laxa H. F. Copeland 1929-6-11 1244 Butte Jonesville 1524 Comment
  CHSC41445  Luzula comosa var. laxa Lowell Ahart 1986-7-2 5341 Butte In a small meadow, north of the dirt road, 1/2 mile southwest of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  CHSC109082  Luzula macrantha Lowell Ahart 2012-4-9 17823 Butte Along South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  CHSC115290  Luzula macrantha Lowell Ahart 2015-4-27 20085 Butte On both sides 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. 304 Comment
  CHSC31908  Luzula macrantha L. Ahart 1975-3-18 709 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC94067  Luzula macrantha R. Fischer 2005-3-9 745 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from the grassy edge of the riparian zone. 219 Comment
  CHSC84175  Lychnis coronaria Lowell Ahart 2003-7-12 10374 Butte On both sides of Milsap Bar Road, about 1/8 mile south of the bridge across the North Fork of the Feather River, about 4 miles (air) northeast of the Brush Creek Work Center, about 20 miles (air) northeast of Oroville. 997 Comment
  CHSC99480  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte Banks 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
  CHSC51367  Lycopus americanus Vernon Oswald 1990-8-14 4435 Butte Kunkle Reservoir on the east side of Pentz-Magalia Hwy south of Paradise. Along the edge of the reservoir on the north side of the dam. 441 Comment
  CHSC66163  Lythrum tribracteatum Vernon H. Oswald; Lowell Ahart 1996-5-27 7654 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  JEPS120854  Lythrum tribracteatum Lowell Ahart 2013-6-18 18806 Butte About 60 yards E of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  JEPS120857  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte About 30 yards north of Lower Honcut Road, about 1.75 miles west of Honcut. Comment
  JEPS88568  Lythrum tribracteatum Vernon H. Oswald and Lowell Ahart 1996-5-27 7654 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (at s end of Tract 2, Sancturary II, Llano Seco Unit of Sacramento R. National Wildlife Refuge); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC31886  Maclura pomifera L. Ahart 1976-5-21 1114 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC342641  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CAS-BOT-BC342726  Madia elegans H. M. Hall 1914-7-18 9758 Butte Chico Creek, 5 mi. E. of Chico Comment
  CHSC109772  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  RSA0060842  Madia elegans subsp. densifolia Lowell A. Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC62529  Madia elegans subsp. elegans B. Castro; J. Jurewicz 1993-7-13 481 Butte Ca 3 mi NW of Brush Creek, along USFS Rd 22N34 as it parallels French Creek, ca 1 mi SW of the low-water crossing at confluence of French and Peavine Creeks. 615 Comment
  CHSC43621  Madia exigua Vernon Oswald 1984-5-23 1200 Butte Beside the dirt road leading to the falls on Bear Ranch Creek s-e of Calif. Hwy 70 at the Cresta Rest Area. 487 Comment
  CHSC96217  Madia exigua R. Fischer 2006-5-30 981 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along Guardian Trail at the junction of Pine Trail and adjacent a seasonal stream. 396 Comment
  CHSC86135  Madia gracilis John Dittes; Josephine Guardino 2002-6-21 618 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  CHSC97015  Madia gracilis L. P. Janeway 2007-7-9 9109 Butte Northern High Sierra Nevada. Plumas National Forest; near Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  UCD135708  Madia gracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte near Pulga, along Camp Creek Road. 512 Comment
  CHSC43625  Madia subspicata Vernon Oswald 1985-5-1 1736 Butte Upper Bidwell Park, Chico, along Yahi Trail just e of Parking Area R. 228 Comment
  RSA715563  Madia subspicata L. Ahart 2005-5-7 11788 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1.25 miles north and 2.75 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  SEINET4173697 Image available Madronella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  SBBG128805  Malacothrix floccifera L. Ahart, J. Dittes, J. Guardino 2013-4-26 18627 Butte rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams 566 Comment
  CHSC45328  Malva neglecta Vernon Oswald 1983-10-10 1058 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  JEPS104135  Malva nicaeensis Lowell Ahart 2003-5-9 10121 Butte Along the sw corner of a prune orchard, on the n side of Evans Reimer Rd, ca 3/4 mi w of Block Rd, ca 3 mi (air) sw of Gridley. 24 Comment
  JEPS119502  Malva parviflora Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17815 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  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
  CHSC45330  Malvella leprosa Vernon Oswald 1983-6-28 782 Butte Graylodge Waterfowl Management Area near Parking Lot 16. Comment
  CHSC66671  Malvella leprosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8094 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 NE corner of Tract 1.1, Sanctuary II. 33 Comment
  CHSC3511  Marah fabacea var. agrestis M. Gregg 1966-2-28 23 Butte In Upper Bidwell Park at Salmon Hole. Comment
  CHSC82398  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte On the bottom and sides of a pond, about 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC101263  Matricaria discoidea Lowell Ahart 2009-4-3 15524 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC81219  Matricaria discoidea J. Trizzino 2001-4-25 61 Butte Chico Avenue, between Crouch Avenue and Lone Pine Avenue. 45 Comment
  CHSC90233  Meconella californica Ross L. Jones 1989-4-12 24 Butte Ca. 100 m s of Butte Creek and 200 m w of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  UCD95462  Meconella californica Dana J. LeNarz 1982-4-8 11 Butte 60m SE of Butte Creek, vic. Covered Bridge, ca. 9.7 km SE of Chico. 122 Comment
  JEPS115540  Medicago arabica Lowell Ahart 2009-5-15 15712 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
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  SEINET10452580  Medicago hispida Mary Susan Taylor 1975-4-25 Taylor 504 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CDA42859  Medicago lupulina L. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-1 18000 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS95544  Medicago orbicularis Lowell Ahart 1994-3-30 7279 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  CHSC40606  Medicago polymorpha Ahart; Jokerst 1985-3-24 4858 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC97690  Medicago polymorpha Lowell Ahart 2007-11-3 14571 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
  HSC32649  Medicago polymorpha Patricia Datzman 1974-4-20 17 Butte 300 yards S of intersection of Pentz Rd. and Clarke Rd. Comment
  RSA4654  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CAS-BOT-BC269378  Melica californica Copeland 1903-5-2 3254 Butte Chico Comment
  CAS-BOT-BC269387  Melica californica John Thomas Howell; Gordon H. True 1967-6-11 42563 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC35966  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River, ca. 20 air mi ne of Oroville. 487 Comment
  SEINET11688662  Melica californica K. R. Pearson 1983-1 19 Butte ca 200 m NNE of Chico Creek, 2 km NW of diversion dam, 3 km NNE of Chico 150 Comment
  JEPS121983  Melica harfordii Lowell Ahart 2014-7-7 19560 Butte About 20 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC88191  Melica subulata Lowell Ahart 2004-7-23 11300 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
  UCR115089  Melica subulata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  UCR208160  Melica subulata Lowell Ahart 2004-7-23 11300 Butte Sierra Nevada Mountains, east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam, about 3.75 miles (air) southeast of Butte Meadows 1457 Comment
  CHSC42524  Melilotus indicus Lowell Ahart 1987-5-6 5525 Butte Along the road, near the Poe Power House along the North Fork of the Feather River about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC90810  Melilotus indicus Lowell Ahart 2005-5-2 11772 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
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  CHSC34144  Melissa officinalis L. Ahart 1981-9-27 3210 Butte On sides of dredger piles ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  CDA13827  Mentha canadensis G. F. Hrusa, T. D. Wilfred 1996-9-5 13555 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC92047  Mentha spicata Lowell Ahart 2005-8-19 12334 Butte On the 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. 49 Comment
  UCD117215  Mentzelia dispersa E. B. Copeland 1929-7-19 385 Butte Jonesville, along Butte Creek. Comment
  CAS-BOT-BC428760  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2043 Butte Chico Canon [Canyon] Comment
  CAS-BOT-BC428762  Micranthes californica A. A. Heller 1919-3-25 13098 Butte Canon [Canyon] of Chico Creek Comment
  CAS-BOT-BC348465  Micropus californicus var. californicus A. A. Heller 1914-4-11 11278 Butte 8 miles north of Oroville Comment
  CHSC24149  Micropus californicus var. californicus B. Bunge 1976-4-22 12 Butte Ca. 100 yd of Skyway, 5 mi ese of Chico. 213 Comment
  CAS-BOT-BC348461  Micropus californicus var. californicus Mrs. C. C. Bruce 1897-1-1 s.n. Butte Unspecified Comment
  CAS-BOT-BC348876  Microseris douglasii subsp. douglasii Lowell Ahart 1985-4-29 4887 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC43627  Microseris nutans Vernon Oswald 1984-6-11 1277 Butte Humboldt Rd. to Butte Meadows, 2.0 mi n-e of its jct. with Hwy 32. 1380 Comment
  CAS-BOT-BC322774  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  CHSC31663  Microseris sylvatica L. Ahart 1979-4-19 1831 Butte Fields near Douglas Oaks. Peter Ahart Ranch, Honcut. 50 Comment
  UC473559  Microseris sylvatica L. S. Rose 1931-4-12 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
  POM196544  Microsteris gracilis subsp. gracilis H. F. Copeland 1929-6-12 1202 Butte Jonesville. 1524 Comment
  CHSC44734  Mimetanthe pilosa R. Banchero 1979-10-7 55 Butte Margin of Sacramento River at Bidwell State Park near boat launching ramp. 38 Comment
  RSA435494  Mimulus aurantiacus var. grandiflorus Francis W. Pennell, A. A. Beetle 1940-6-5 25677 Butte route 24 Stony bank, red clay, along Featerh Rvier above Oroville, 10-12 mi. above 183 Comment
  POM5059  Mimulus bicolor A. A. Heller, H. E. Brown 1902-5-12 5545 Butte Grade between Clear Creek and Paradise. Comment
  JEPS115643  Mimulus cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 266 Comment
  JEPS109856  Mimulus glaucescens Dean W. Taylor 2006-6-28 19554 Butte West Branch Feather River; growing on the diversion dam and nearby cliffs just upstream from the Reston Road Bridge, vicinity of Striling 993 Comment
  JEPS5590  Mimulus glaucescens R. F. Hoover 1938-4-24 3248 Butte 3 mi n Chico Comment
  POM43712  Mimulus glaucescens C. C. Bruce 1897-02 2106 Butte Little Chico. Comment
  CDA31944  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam Comment
  JEPS48318  Mimulus guttatus Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2686 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  SEINET5561543  Mimulus guttatus H. S. Gentry, S. Koch 1962-1 19782 Butte 6 mi. NE of USDA Field Station, Chico, along road to Centerville. Comment
  JEPS4705  Mimulus microphyllus A. A. Heller 1938-5-4 15060 Butte e Chico (near covered bridge over creek); Butte Creek 106 Comment
  SEINET13711426  Mimulus pilosus Lowell William Ahart, Lowell William Ahart 1999-1 8133 Butte 12 Air Mi. SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  SBBG28815  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville Comment
  UCD122930  Mimulus torreyi L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC93500  Minuartia californica Lowell Ahart 2006-5-8 12590 Butte Margins of a vernal pool, about 80 yards south of the three Gray Pines on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 346 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
  RSA424440  Minuartia douglasii Margaret J. Williams, W. Roderick 1984-5-25 84- 22 -11 Butte Magalia, near Skyline road to Paradise 640 Comment
  JEPS98679  Moenchia erecta subsp. erecta Lowell Ahart 2000-5-9 8332 Butte 10 air miles NE of Oroville (S side of the dirt road, S side of the Oak Grove Cemetery, about 1/2 mi SE of Hurleton) 548 Comment
  CDA23932  Mollugo verticillata D. G. Kelch 2006-8-2 6 .341 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC102399  Mollugo verticillata Lowell Ahart 2009-8-13 16274 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
  UCD99637  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville. 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
  CHSC62558  Monardella breweri subsp. lanceolata B. Castro 1993-7-27 490 Butte Ca 3 mi SW of jcn of French and Peavine Creeks, at SE end of Swayne Hill, on USFS Rd 23N28 ca 0.8 mi W of its jcn with Rd 22N34. 737 Comment
  CHSC70800  Monardella breweri subsp. lanceolata B. Castro 1989-8-1 332 Butte Ca 3.5 road mi E of Brush Creek on Milsap Bar Rd. Ca 100 ft S of rd. 853 Comment
  CAS-BOT-BC222138  Monardella odoratissima subsp. pallida E. B. Copeland 1930-8-4 452 Butte Jonesville 1550 Comment
  CAS-BOT-BC220233  Monardella sheltonii John Thomas Howell 1955-6-15 30481 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC220457  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC2422  Monardella sheltonii R. Carter 1965-6-15 227 Butte Found e of Paradise on Honey Run Rd., 2.4 mi. from intersection with Skyway on S side of road. 472 Comment
  CHSC43019  Monardella sheltonii L. P. Janeway 1987-6-5 2127 Butte Along OroQuincy Hwy 0.5 mi S of suspension br over Lake Oroville. 320 Comment
  CHSC91463  Monardella sheltonii Lowell Ahart 2005-7-12 12137 Butte On the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway. 623 Comment
  SEINET10895146  Monardella sheltonii A. Graff 1993-7-23 Graff 343 Butte Plumas National Forest. Hwy. 70 southwest to Oroville from Arch Rock, at a turnout on the right. Mixed hardwood-conifer forest. Past bloom. Comment
  CHSC60101  Monardella venosa B. Castro; L. P. Janeway 1992-5-10 456 Butte In bottom of canyon SE of Neal Road; ca 100 ft NW of intermittent creek. 85 Comment
  HSC95623  Monardella venosa James D. Jokerst, B. Castro 1992-5-19 3356 Butte Powerline site in unnamed canyon N of Nugen Canyon, S side of Neal Rd. near Butte Co. Sanitary Landfill, Cascade Range Foothills 84 Comment
  RSA718313  Monardella villosa subsp. sheltonii L. Ahart 2006-6-9 12655 Butte on east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 386 Comment
  UC1562413  Monardella villosa subsp. villosa Lowell Ahart 1990-5-28 6502 Butte South of Palm Avenue, about 1/4 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  SEINET10572658  Montia diffusa Mary Susan Taylor 1981-4-28 Taylor 3568 A 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
  JEPS124215  Montia fontana Lowell Ahart 2015-2-26 19939 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC56080  Montia fontana subsp. amporitana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. In the lawn. 70 Comment
  CHSC50418  Montia fontana subsp. chondrosperma Vernon Oswald 1990-6-26 4321 Butte East branch of Willow Creek on the east side of Humbug Rd, ca. 1.25 mi (air) southwest of Humbug Summit. Very abundant in quiet water of a shallow drainage on the meadow where the north and east branches of Willow Creek join. 1853 Comment
  SEINET10572724  Montia fontana subsp. chondrosperma Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5384 Butte T23N R3E se sec 33? S side of Humbug Rd, ca. 6 mi NE of Honey Run Covered Bridge, ca. 10 air mi NE of Chico. Foothill Woodland; 1220 ft elev. 372 Comment
  CHSC38633  Montia parvifolia Vernon Oswald 1983-4-24 360 Butte Upper Bidwell Park, Chico, near the north edge of Chico Creek 50 ft w of Parking Area H at Day Camp. 91 Comment
  CHSC7113  Montia parvifolia S. Armantrout 1969-5-6 5 Butte Hwy. 70, first rest stop in Feather River Canyon, across road up trail 2 mi, below water fall. Bear Creek. Comment
  CHSC44457  Muhlenbergia filiformis Lowell Ahart 1988-6-29 6098 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  CHSC47621  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte Along the edge of the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  POM196084  Muhlenbergia filiformis H. F. Copeland 1929-6-9 1213 Butte Jonesville. 1524 Comment
  SEINET256564 Image available Muhlenbergia jonesii Lowell Ahart 1985-10-12 5198 Butte Near the east side of Kunkle Rexervoir about 2 miles south of Paradise. 503 Comment
  UC1563261  Muhlenbergia mexicana unknown 1990-10-21 6635 Butte about 1/2 mi w Gold Flat (about 1 mi n of Nelson Bar Road, below high water line of lake); Lake Oroville 213 Comment
  SEINET7294640 Image available Muhlenbergia mexicana var. filiformis John Thomas Howell 1961-1 36716 Butte Bank of Feather River, Oroville 53 Comment
  UCD86785  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  RSA755637  Myosotis discolor L. Ahart 2009-5-15 15717 Butte On the east bank of Big Chico Creek, on the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC45713  Myosurus apetalus var. borealis Cynthia L. Eddy 1984-4-10 15 Butte NW corner of intersection of Hwy 99 and Broyles Rd., ca. 12 mi n of Chico. 91 Comment
  SD9591  Myriopteris gracillima E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  CHSC39100  Nama lobbii R. A. Schlising; K. Tarp 1983-8-12 4437 Butte N part of county, N of Philbrook Reservoir on unnamed road. 1828 Comment
  SD4132  Nama lobbii E. B. Copeland 1930-6-27 Butte Jonesville 1600 Comment
  CHSC42138  Narthecium californicum Lowell Ahart 1984-7-19 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. 1600 Comment
  CHSC41137  Nassella pulchra R. L. Ondricek-Fallscheer 1983-5-7 165 Butte Ca. 200 yds s of house on plateau at tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 170 Comment
  CHSC100805  Navarretia capillaris R. A. Schlising; L. Janeway 1988-7-16 4604 Butte N part of county, S of Humbug Summit at upper reaches of Willow Creek; edge of meadow. 1950 Comment
  CHSC11950  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville. 1550 Comment
  CHSC26880  Navarretia divaricata K. R. Stern 1974-6-30 5773 Butte Ca. 2 mi w of Philbrook Reservoir. Comment
  CHSC45426  Navarretia divaricata subsp. vividior Lowell Ahart 1984-7-19 4729 Butte Along the edge of the dirt road where there is a seep, 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
  JEPS100229  Navarretia filicaulis Dean W. Taylor 2002-7-3 18217 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 1005 Comment
  SEINET260314  Navarretia heterandra Lowell Ahart 1988-5-5 5981 Butte P. Ahart Ranch ca 2.25 mi N and 1.5 mi E of Honcut ca 12 mi S of Oroville 43 Comment
  CHSC10727  Navarretia intertexta Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC101836  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15754 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on east side of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  CHSC25158  Navarretia leptalea D. Joley 1968-7-8 Butte 3/4 mi e of Lomo on Butte Meadows Road ca. 35 mi ne of Chico. Comment
  CHSC1295  Navarretia leucocephala J. Gulick 1929-4-18 Butte Rifle Range, near Chico creek. 76 Comment
  CHSC91116  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-27 11814 Butte Deep depression near a large wash, pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC28478  Navarretia nigelliformis R. A. Schlising 1979-6-3 3431 Butte Richvale vernal pools, 1/4 mi s jct Hwy 99 and 162 to Oroville, across from Thermalito Afterbay. Comment
  CHSC43943  Navarretia nigelliformis subsp. nigelliformis Vernon Oswald 1988-5-18 3315 Butte East side of Bruce Rd. ca. 0.8 mi n of the Skyway in southeast Chico. 79 Comment
  CHSC95172  Navarretia tagetina R. D. Fischer 2004-4-27 797 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy 32. Plants growing at the north end of Disc Golf Course. 396 Comment
  RSA337389  Nemacladus interior L. Ahart 1984-6-8 4669 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown. 370 Comment
  SEINET12329565  Nemacladus interior Unknown 1984-1 4669 Butte At the Ponderosa Dam, ca 2 mi NW of Forbestown;along dirt road to the generator on the N side of 370 Comment
  CHSC101268  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC31177  Nemophila heterophylla M. S. Taylor 1979-5-4 1994 Butte Millsap Bar Campground, ca. 9 mi ne of the jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  JEPS3147  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big and Little Chico Creeks, Sierra Nevada foothills); Sierra Nevada foothills, btw Big and Little Chico Creeks 609 Comment
  SEINET12334039  Nemophila heterophylla L. P. Janeway 1988-1 2964 Butte near the road to French Cr, 0.9 mi S of Coyote Gap 1189 Comment
  UC606887  Nemophila heterophylla L. Constance, J. L. Morrison 1938-4-30 2177 Butte 8 mi n Chico (between Big Chico Creek and Little Chico Creek); Sierra Nevada foothills, btw Big Chico Creek and Little Chic 609 Comment
  CHSC45840  Nemophila maculata Lowell Ahart 1973-3-24 182 Butte Along a small wash, along Swedes Flat Road, about 1 mile east of Rocky Honcut Creek. 457 Comment
  CHSC62467  Nemophila menziesii var. menziesii B. Castro; L. Janeway 1991-4-19 443 Butte Ca 10 air mi NE of Oroville, 0.25 mi NW of Oregon Gulch, on gentle E-facing slope in N part of a 'Y' formed by jcn of old RR bed and road from Oregon Gulch to Hollow Spring. 295 Comment
  UC880940  Nemophila pedunculata A. A. Heller 1915-4-20 11852 Butte Chico-Centerville road 3 mi from Chico; <near> Chico Comment
  CHSC75974  Nicotiana acuminata var. multiflora Lowell Ahart; Vernon H. Oswald 1999-8-13 8135 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  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
  UC985680  Nuphar lutea subsp. polysepala Herbert L. Mason, Verne Grant 1946-8-14 13029 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Butte Sink; , Sacramento Outing Club Comment
  SEINET12342943  Odontostomum hartwegii Unknown 1936-1 13408 Butte along Mud Creek near Chico Comment
  SEINET10500394  Orobanche fasciculata var. franciscana Mary Susan Taylor 1976-4-27 Taylor 1086 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  CHSC51081  Orthilia secunda Pauleen Broyles 1987-7-19 1077 Butte Ca. 72 km (air) ne of Inskip. at edge of small lake. 526 Comment
  SEINET10549654  Orthocarpus campestris Mary Susan Taylor 1979-5-6 Taylor 1999 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET10592212  Oryza sativa Mary Susan Taylor 1978-9-8 Taylor 1898 Butte Around rice fields along Road 50, 4 mi N of Chico. In rice field. 61 Comment
  CHSC93967  Osmorhiza chilensis R. D. Fischer 2004-6-20 746 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a wooded side road, east side of camp and Chico Meadows. 1371 Comment
  SEINET10454532  Oxypolis occidentalis Mary Susan Taylor 1977-7-15 Taylor 1407 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  LA212209  Packera eurycephala var. lewisrosei James R. Shevock; 1972-5-9 1777 Butte Feather River Canyon, Jarbo Plass. 914 Comment
  CHSC47625  Panicum capillare Lowell Ahart 1974-8-14 601 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC52374  Parentucellia viscosa L. P. Janeway 1989-5-13 3234 Butte NE corner of Durham-Pentz Rd and Lake Hills Dr (pvt) 1.0 mi E of hwy 191. 115 Comment
  CHSC93879  Parentucellia viscosa L. P. Janeway 2006-5-24 8606 Butte Northern Sierra Nevada Foothills. Near the eastern shores of Lake Wyandotte, about 7.0 air km east-southeast of Oroville Dam. 422 Comment
  JEPS104347  Parvisedum pumilum Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  CHSC28426  Paspalum dilatatum M. S. Taylor 1979-9-28 2199 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC38839  Paspalum dilatatum Vernon Oswald 1983-6-3 630 Butte Upper Bidwell Park, Chico, on the side of the access road on the w bank of the diversion channel near Lindo Channel. 83 Comment
  UCD88969  Paspalum urvillei Alan A. Beetle 1941-6-27 2894 Butte 4 miles north of Gilroy. Comment
  CHSC46853  Pectiantia pentandra R. A. Schlising; P. Broyles 1987-6-26 4525 Butte NE of Inskip, just E of Brown Ravine, on small tributary of Last Chance Creek. 1584 Comment
  CHSC40767  Pectocarya pusilla Ahart; Jokerst 1985-5-10 4960 Butte In the road gutter, along the dirt road 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC94911  Pedicularis densiflora L. P. Janeway 2006-5-28 8644 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. 1248 Comment
  SFV3421  Pedicularis densiflora M. L. Vincent 1961-3-20 9 Butte Paradise. Harrison and Stearns Roads. 535 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
  UC171556  Pedicularis semibarbata Mrs. R. M. Austin July 1896 110 Butte Colby Comment
  CDA30220  Pellaea andromedifolia L. Ahart 2009-5-3 15781 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC86078  Pellaea andromedifolia R. D. Fischer; Paul Maslin 2003-12-24 1022 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch. Site about 1/2 mile north of the gated main entrance of the Big Chico Creek Ecological Reserve (BCCER) and about 200 ft. westward downhill of cliffs. 518 Comment
  CAS-BOT-BC67598  Pellaea mucronata Ahart; Jokerst 1985-3-24 4855 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC39227  Pellaea mucronata M. S. Taylor; K. Tharp 1983-3-11 5222 Butte Big Bald Rock, ca. 3 mi s of Bruch Creek, ne of Oroville. 975 Comment
  CAS-BOT-BC67556  Pellaea mucronata Lowell Ahart 1966-2-25 s.n. Butte Honcut - Peter Ahart Ranch 45 Comment
  CHSC97017  Pellaea mucronata var. mucronata L. P. Janeway 2007-6-19 9064 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
  CHSC88056  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1 mile s. of this junction. 643 Comment
  RSA699542  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 air miles N of Paradise, and W of upper Paradise Pines. Turn W off Skyway Road on Nimshew Road and take the S turn on Centerville Road (on older maps Humbug Road), ca 1 mile S of this junction. 644 Comment
  SEINET3160230  Penstemon breviflorus L. S. Rose 1940-5-30 40425 Butte Feather River Canyon, 25 mi NE of Oroville 610 Comment
  UCD124220  Penstemon heterophyllus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC94061  Penstemon heterophyllus var. purdyi R. D. Fischer 2005-6-12 738 Butte Sierra Nevada foothills, off Hwy. 32, about 3 miles east of Chico at theeast end of Humboldt trailhead in Bidwell Park. Roadside collection. 407 Comment
  SEINET10548025  Penstemon laetus Mary Susan Taylor 1980-5-27 Taylor 2730 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC86545  Penstemon laetus var. leptosepalus L. P. Janeway; John Hunt 2003-6-13 7826 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 140 m northwest of the north end of Enterprise Bridge. 287 Comment
  UC103112  Penstemon laetus var. leptosepalus D. Cleveland 1882-7-14 141 Butte Sutton House Comment
  LA209562  Penstemon procerus E. B. Copeland; 1931-6-20 Butte Jonesville, Butte Creek 1500.0 Comment
  CHSC86081  Pentagramma pallida R. D. Fischer 2003-12-26 25 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. West side of Diversion Dam parking area. 231 Comment
  CHSC3982  Pentagramma triangularis E. P. Parreno 1967-2-20 Butte Salmon Hole. Comment
  CHSC79635  Pentagramma triangularis Simona Altman 1999-3-9 41 Butte At intersection of Skyway and Canyon Rim Pl. 76 Comment
  CHSC11325  Pentagramma triangularis subsp. semipallida Lowell Ahart 1967-4-12 Butte Bidwell Bar. 121 Comment
  CHSC32724  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-8 3497 Butte At end of Dark Canyon Rd, around the turnout near the restroom up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  UC1549532  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte ca. 2-3 mi ne of Pulga (along Four Trees Rd, ca. 0.5 to 1 mi e of Hwy 70); Pulga SW Quadrangle 670 Comment
  CDA14077  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13960 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  RSA459082  Perideridia parishii subsp. latifolia M. B. Dunkle 1931-8-12 2624 Butte Paradise Valley Comment
  SEINET3924533  Persicaria amphibia Lowell Ahart 2003-6-16 10287 Butte On the west side of Wickman Road, about 1 mile south of Richvale West road, about 1.5 miles (air) southwest of Richvale.; 0 29 Comment
  CAS-BOT-BC413703  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CHSC83088  Persicaria lapathifolia Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC42489  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC66675  Persicaria maculosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8097 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Growing in gravel on the edge of the public access parking lot on Seven Mile Lane, adjacent to the SE corner of Tract 2, Santuary II. 33 Comment
  JEPS119936  Persicaria maculosa Lowell Ahart 2012-9-28 18465 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  UCD99567  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC419322  Persicaria punctata John Thomas Howell 1959-9-20 34664 Butte Eastern outskirts of Oroville 60 Comment
  CHSC109765  Persicaria punctata Lowell Ahart 2012-10-28 18523 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC116135  Persicaria punctata Lowell Ahart 2015-11-7 20635 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  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
  CHSC110127  Phacelia cicutaria var. cicutaria L. P. Janeway 2012-3-21 10797 Butte Northern Sierra Nevada Foothills. Near the top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the railroad tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). 88 Comment
  CHSC42226  Phacelia egena Rusti Gannon 1986-4-3 8 Butte Ca. 6.5 mi ne of Chico, w bank of Mud Creek. Ca. 35 yds nw along creek. 195 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
  SEINET10496979  Phacelia heterophylla var. pseudohispida Mary Susan Taylor 1978-7-19 Taylor 1784 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CHSC33243  Phacelia purpusii R. A. Schlising; D. Ikeda, R. Banchero 1980-7-26 3780 Butte Along Humboldt Road, 0.6 mi N of jct with Hwy 32 at Lomo. 1219 Comment
  UC1187650  Phacelia purpusii Lincoln Constance, Elwood Molseed, John Weiler 1960-6-12 3677 Butte three mi above junction of Highway 32 and Butte Meadows road (33 min ne of Chico) 1219 Comment
  CHSC60987  Phacelia vallicola Lowell Ahart 1993-6-20 6989 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC8263  Phalaris caroliniana D. McClain 1969-4-18 48 Butte 1000 yds. n.w. from gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  CAS-BOT-BC250704  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  SEINET10482912  Philadelphus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5508 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC6622  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U on Chico State College campus. 60 Comment
  CAS-BOT-BC77374  Philadelphus lewisii A. A. Heller 1913-6-6 10784 Butte Ditch along Table Mountain 8 miles north of Oroville 182 Comment
  UCD22550  Philadelphus lewisii James I. Mallory 1970-5-26 373 Butte Little Butte Creek Canyon south of Irish Town. 426 Comment
  OBI48878  Philadelphus lewisii subsp. californicus Lewis S. Rose 1940-5-30 40423 Butte Feather River Cyn, 25 mi NE of Oroville 610 Comment
  SEINET10657620  Phleum pratense Mary Susan Taylor 1982-1 Taylor 4728 Butte T33N R5E nw1/4se1/4 sec 30. Pulga SW quad. Weedy around large landing on saddle of ridde se of Flea Mt, n of Pulga. ca. 5 air mi e of Magalia. With Malacothrix floccifera, Onobrychis, Madia, Rumex acteosella, Penstemon. 1097 Comment
  UCD118397  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  UC478477  Phlox gracilis E. B. Copeland 1931-6-29 680 Butte Butte Creek Jonesville 1500 Comment
  CHSC115284  Phlox speciosa subsp. occidentalis Lowell Ahart 2015-4-30 20121 Butte About 1/4 mile south of Forbestown Reservior Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  SEINET10903286  Phoradendron bolleanum subsp. densum Mary Susan Taylor 1980-2-17 Taylor 2316 Butte T23N R2E sec 17. In crevice of cliff, ca. 1/4 mi N of Mud Creek, ca. 1 mi NE of Richardson Springs Hotel. 366 Comment
  CHSC3591  Phoradendron densum Susan Carrauthers 1966-3-6 45 Butte 1/4 mi N.E. of Magalia (city) train station on Coutelenc Road. N. of city of Paradise. Comment
  CHSC85727  Phoradendron densum G. F. Hrusa; T. D. Wilfred 1997-7-3 13981 Butte Sierra Nevada. Near summit of serpentine slopes facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 degrees 51' N; 121 degrees 34' W']. 750 Comment
  LA209828  Phoradendron juniperinum E. B. Copeland; 1931-7-28 627 Butte Jonesville 1500.0 Comment
  UC203612  Phoradendron villosum A. A. Heller 1914-1-28 11157 Butte 6 mi. e. Chico (on volcanic uplands near Hog Springs) Comment
  SEINET10936355  Phoradendron villosum Mary Susan Taylor 1981-1-5 Taylor 3373 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CDA43066  Photinia serratifolia L. P. Janeway 2011-4-2 10236 Butte Sacramento Valley.; Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave. between Madrone Ave. and Crister Ave. Comment
  UC1143157  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  CHSC102989  Phytolacca americana Lowell Ahart 2009-8-13 16280 Butte West end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 68 Comment
  RSA755373  Phytolacca americana L. Ahart 2009-8-13 16280 Butte At the west end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Linda Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 69 Comment
  UCR188556  Phytolacca americana George K. Helmkamp, E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CHSC28691  Pilularia americana M. S. Taylor 1979-5-6 2002 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46176  Pilularia americana Lowell Ahart 1978-5-15 1720 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC88660  Pinus lambertiana H. Gray 2003-1-27 Butte Plumas National Forest. 914 Comment
  NY61630  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC2351  Piperia transversa V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CHSC54457  Piperia transversa Vernon H. Oswald; Lowell Ahart 1991-7-15 4732 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its junction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  UC177514  Piperia transversa H. M. Hall 1914-7-29 9799 Butte Butte Meadows 1371 Comment
  CHSC4403  Piptatherum miliaceum R. L. Smith 1966-5-5 3 Butte Paradise, 5 mi sw of post office. Comment
  SEINET10529821  Pityrogramma triangularis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5378 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  SEINET10529838  Pityrogramma triangularis Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3468 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CHSC28142  Plagiobothrys austiniae Robert A. Schlising 1979-4-30 3383 Butte Ca 10 mi nw of Oroville, near jct Pentz and Clark roads. At roadside. 76 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
  JEPS119603  Plagiobothrys canescens Lowell Ahart 2012-4-9 17846 Butte About 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  UC196295  Plagiobothrys canescens A. A. Heller 1914-3-26 11226 Butte canyon of Big Chico Creek Big Chico Creek 76 Comment
  CHSC101285  Plagiobothrys fulvus Lowell Ahart 2009-4-17 15544 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  SEINET12275924  Plagiobothrys fulvus Unknown s.n. Butte no further locality Comment
  JEPS117195  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  JEPS117203  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-22 16715 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-BC228252  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 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
  UCR237307  Plagiobothrys nothofulvus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18754 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
  CHSC39030  Plagiobothrys scriptus R. A. Schlising 1983-4-15 4403 Butte Cohasset Ridge, just sw of village of Cohasset and e of Maple Branch of Mud Creek. Dirt road. 536 Comment
  CHSC26798  Plagiobothrys stipitatus M. S. Taylor; H. Hayes 1978-4-14 1566 Butte In vernal pools, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  UC1601376  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC116703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-14 20830 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC43552  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1979-5-20 1881 Butte On the west side of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  CHSC46774  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-5-4 2176 Butte On the bottom of small vernal pools and along small washes, in a pasture, south-west of the intersection of Nelson Avenue and 20th Street in Thermalito. 60 Comment
  CHSC87205  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  UCD80162  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-4-12 SNFN 0077 c Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC33680  Plantago coronopus L. Ahart 1981-5-16 2795 Butte Along edge of dirt roads on Gray Lodge Waterfowl Mgmt Area, 1 mi sw of Gridley. 35 Comment
  CHSC71186  Plantago coronopus Lowell Ahart 1998-6-9 7984 Butte At the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCD77277  Plantago coronopus Robert E. Preston 2005-3-24 2326 Butte Palermo Substation, ca. 1.3 mi NE of Palermo 121 Comment
  CHSC110440  Plantago elongata B. Castro 2007-3-29 1618 Butte Sacramento Valley. Ca 0.9 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd. Around edges of distinct but shallow, flat-bottomed vernal pool, ca 80 ft E of Cohasset Rd and 50 ft N of Levell Along Sycamore Creek. 57 Comment
  CHSC37404  Plantago elongata A. R. Ratcliff; R. A. Schlising 1980-4-6 3547 Butte Jct Chico-Oroville Road, about 5 mi s of Chico. 53 Comment
  CDA42161  Plantago elongata L. Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut. 0 Comment
  CHSC29120  Plantago erecta M. S. Taylor 1980-4-6 2450 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  CHSC41135  Plantago erecta Paul K. Kirk 1981-4-16 10 Butte 150 m w of the e gate of Cherokee Rd. on Table Mountain, 13 km n of Oroville. 390 Comment
  JEPS113684  Plantago lanceolata Lowell Ahart 2007-7-27 14393 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  SEINET10499814  Plantago lanceolata Mary Susan Taylor 1975-3-3 Taylor 395 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  JEPS124275  Plantago major Lowell Ahart 2015-11-18 20663 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CHSC106878  Plantago virginica Lowell Ahart 2011-5-10 17355 Butte Southeast of the tower, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  JEPS118330  Plantago virginica Lowell Ahart 2011-5-10 17355 Butte Southeast of the tower, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  JEPS122066  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC86131  Platanthera leucostachys John Dittes 2002-6-29 626 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On ridge above FS access road. 1255 Comment
  CAS-BOT-BC93159  Platanus racemosa Lowell Ahart 1984-4-3 4535 Butte Peter Ahart Ranch. Found growing on gravel bars along North Honcut Creek. About 1 mile north and 2.75 miles east Honcut. 50 Comment
  CAS-BOT-BC93161  Platanus racemosa John Thomas Howell 1961-9-22 36766 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. 121 Comment
  CHSC103113  Platanus racemosa Lowell Ahart 2009-8-23 16296 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
  UC118461  Platystemon californicus Mrs. R. M. Austin Apr 1896 170 Butte plains e Chico; plains e of Chico Comment
  SFV10384  Platystemon californicus M. L. Vincent 1964-4-9 539 Butte 1.5 miles from Clark Road turnoff on Alt. 40 North Fork. Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  JEPS15251  Plectritis ciliosa subsp. ciliosa Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5614 Butte 6 mi s of Oroville (along road from Oroville to Bangor) 167 Comment
  CHSC29232  Plectritis congesta M. S. Taylor 1980-4-1 2428 Butte On bluffs above Covered Bridge, ca. 100 ft s of Butte Creek, ca. 6 mi e of Chico 182 Comment
  CHSC115485  Plectritis congesta subsp. brachystemon L. P. Janeway; Emily Meigs Doe 2015-4-21 11666 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  UC890146  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  CHSC33573  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CAS-BOT-BC458151  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft. W of Old Humboldt Rd. 2011 Comment
  HSC72943  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between FS 21N33 and 21N80, Galen Ridge, 1 mi. SW of Bald Rock Rd, 0.5 mi. N of Zink Rd., 2 mi. SW of Brush Creek. 1006 Comment
  CHSC47627  Poa annua Lowell Ahart 1974-3-12 317 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC28553  Poa bolanderi M. S. Taylor 1978-7-19 1777 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC40294  Poa bolanderi Lowell Ahart 1985-7-16 5147 Butte Near Willow Creek, about 4 miles east of Cherry Hill, about 7 miles north-east of Butte Meadows. 1828 Comment
  JEPS106266  Poa bolanderi Lowell Ahart 2004-7-23 11305 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
  JEPS117176  Poa bolanderi Lowell Ahart 2010-9-21 17198 Butte On damp humus, under firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  POM183185  Poa bolanderi H. F. Copeland 1930-7-21 1349 Butte Jonesville. 1524 Comment
  CAS-BOT-BC255063  Poa compressa John Thomas Howell 1962-6-16 37578 Butte Pentz Road 2 miles S of Magalia 609 Comment
  UC1594539  Poa compressa Lowell Ahart 1992-8-2 6897 Butte cxa 3 air mi ne Concow Reservoir (in Concow Medow, along Concow Creek) 1097 Comment
  CHSC50854  Poa cusickii subsp. epilis Vernon Oswald; Lowell Ahart 1990-7-19 4371 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  CHSC64263  Poa pratensis S. C. Morey 1983-8-1 651 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC101746  Poa pratensis subsp. pratensis Lowell Ahart 2009-5-23 15746 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 Highwat 32, about 10 miles northeast of Chico. 203 Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  CHSC29742  Poa secunda subsp. secunda J. D. Jokerst 1980-4-21 632 Butte Top of North Table Mt., several miles N of Cherokee Rd. 457 Comment
  CHSC92585  Poa secunda subsp. secunda L. P. Janeway; Jamie Tuitele-Lewis, Matt Brown, Samantha 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
  CHSC110469  Poa sierrae L. P. Janeway 2013-5-20 11111 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 0.8 air km west-northwest of Cresta Powerhouse, along Camp Creek Road 0.2 road km northeast of Dixie Road. 646 Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  CHSC26716  Polanisia dodecandra subsp. trachysperma M. P. Hayes 1977-10-23 140 Butte Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  UC398942  Polemonium occidentale subsp. occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville 1500 Comment
  UCD109713  Polygala cornuta L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC167551  Polygala cornuta var. cornuta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CHSC46976  Polygala cornuta var. cornuta Vernon H. Oswald 1989-9-27 4017 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of the roadway which surrounds the perimeter of the lake. 777 Comment
  SEINET6647276 Image available Polygonum alpinum E. B. Copeland 1930-1 s.n. Butte Jonesville 1500 Comment
  SEINET10479328  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4373 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC46878  Polygonum aviculare Vernon Oswald 1989-9-6 3991 Butte Between the Midway and the railroad at Butte Creek, ca. 1.5 mi sse of Durham. Rancho Esquon. Common weed on hard-packed soil of a parking area on the north edge of the creek. 30 Comment
  CAS-BOT-BC414193  Polygonum aviculare subsp. depressum Lowell Ahart 1986-11-9 5453 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  UC85633 Image available Polygonum californicum Mrs. Bidwell July 1876 Butte Chico Comment
  POM118565  Polygonum californicum C. C. Bruce 1897-06 2007 Butte [No location data on label] Comment
  SEINET10479639  Polygonum convolvulus Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4269 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CAS-BOT-BC414416  Polygonum douglasii H. F. Copeland 1920-7-24 18 Butte Meadow by Colby Creek 1828 Comment
  POM280362  Polygonum douglasii Lyman Benson 1932-7-28 3973 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  JEPS88583  Polygonum douglasii subsp. douglasii Vernon H. Oswald and Lowell Ahart 1996-7-22 8082 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (w side of levee at sw corner of Tract 6, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  CHSC11916  Polygonum douglasii subsp. spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville. Dry openings in Colby Canyon. 1550 Comment
  UC1509659  Polygonum hydropiper L. Ahart 1982-10-11 3864 Butte large duckpond ca 1/10 mi w Graylodge Wildlife Refuge (ca 12 mi sw of Gridley) 35 Comment
  CDA42849  Polygonum lapathifolium L. Ahart 2011-8-17 17628 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  JEPS95934  Polygonum lapathifolium Lowell Ahart 1999-8-13 8174 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
  SEINET10970713  Polygonum parryi Mary Susan Taylor 1980-6-14 Taylor 2875 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CHSC103173  Polygonum punctatum Lowell Ahart 2009-11-19 16559 Butte About 30 yards west of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  UC1191264  Polygonum punctatum Herbert L. Mason and Verne Grant 1946-9-4 13109 Butte West Gridley Rd 833 Canal Comment
  CAS-BOT-BC71866  Polypodium californicum Lowell Ahart 1983-3-28 3911 Butte Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown 450 Comment
  UCSB63725  Polypodium californicum Occhino, Deborah 1990-4-22 Butte S bank Big Chico Creek, vic. police pistol range, SW corner Bidwell Park, Chico 60 Comment
  CHSC3886  Polypodium calirhiza Gerry Carrauthers 1966-3-7 79 Butte Honeyrun Rd. above old Honeyrun Bridge. Ca. 5 mi. N. W. of city of Paradise. Comment
  JEPS117728  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CAS-BOT-BC232966  Polypogon australis A. A. Heller 1914-5-19 11419 Butte Hills 8 miles N of Oroville Comment
  CHSC38850  Polypogon interruptus Vernon Oswald 1983-6-17 700 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca. 200 ft w of Day Camp. On ledge near creek. 91 Comment
  UC1609522  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  CAS-BOT-BC233206  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Near Butte Creek between Durham and Nelson Comment
  SEINET10507585  Polypogon maritimus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4052 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
  SEINET11688355  Polypogon monspeliensis Unknown 1985-1 4973 Butte W of Lunt Road ca 0.5 mi N of intersection of Lunt Rd and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  CHSC24671  Polystichum californicum C. E. Stopher; K. R. Stern 1976-4-13 24 Butte 2.8 km sse of Forest Ranch. 489 Comment
  CHSC10673  Polystichum imbricans Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CAS-BOT-BC72296  Polystichum imbricans subsp. imbricans John Thomas Howell; Gordon H. True 1967-6-11 42566 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC77445  Populus fremontii subsp. fremontii Tim Stofer 1997-4-29 30 Butte Located 50 ft from the enterance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  SD65  Potamogeton berchtoldii E. B. Copeland 1931-7-20 604 Butte Jonesville, in cold springs 1650 Comment
  SEINET10501689  Potamogeton crispus Mary Susan Taylor 1982-5-22 Taylor 4496 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
  CDA794  Potamogeton diversifolius L. Ahart 2004-7-11 11226 Butte In shallow water on the SE shore of Paradise Lake, about 3/4 mile NE of the picnic area, about 1 mile NE of Paradise Dam, about 4 miles (air) SW of Stirling City. Comment
  CHSC66688  Potamogeton foliosus var. foliosus Vernon H. Oswald; Lowell Ahart 1996-7-22 8091 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.2, Sanctuary II. 32 Comment
  CHSC49686  Potamogeton gramineus Vernon Oswald 1987-6-9 2974 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink Comment
  UCD138255  Potamogeton nodosus H. L. Mason; Verne Grant 1945-7-10 12640 Butte Stanford Slough, Butte Sink, southwest corner of county. Comment
  CHSC46885  Potamogeton pectinatus Vernon H. Oswald 1989-9-4 3977 Butte Wurlitzer Unit, Vina Plains Preserve. In the farm pond. 56 Comment
  UC1099839  Potamogeton pectinatus Herbert L. Mason, Verne Grant 1946-8-14 13045 Butte Butte Sink Comment
  CHSC54309  Potentilla glandulosa subsp. reflexa Vernon H. Oswald 1991-6-3 4640 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  JEPS117310  Potentilla gracilis var. fastigiata Lowell Ahart 2010-9-28 17253 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  POM197046  Potentilla norvegica subsp. monspeliensis H. F. Copeland 1928-8-22 1066 Butte Jonesville. 1524 Comment
  CHSC38652  Poterium sanguisorba Vernon Oswald 1983-5-25 550 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. Along an abandoned road. 134 Comment
  CHSC105953  Proboscidea lutea Lowell Ahart 2010-9-24 17238 Butte Near the east edge of the Golf Course, about 10 yards north of the footbridge, northeast of the Golf Club House, on the north side of Big Chico Creek, Bidwell Park. 94 Comment
  CHSC39512  Prunella vulgaris var. lanceolata Lowell Ahart 1983-6-21 4067 Butte Along Bloomer Hill Road. Near a Branch of Canyon Creek, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 5. 40 Comment
  CHSC48494  Prunella vulgaris var. vulgaris Vernon Oswald 1984-6-5 1255 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CHSC109648  Prunus avium Lowell Ahart 2012-5-17 18083 Butte Both side of the horse trail, between the paved park road and the poor dirt road, betw2een the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. 73 Comment
  SEINET10483441  Prunus avium Mary Susan Taylor 1981-5-29 Taylor 3813 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi SW of Coyote Gap, ca. 16 air mi N of Oroville. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 Comment
  CHSC110039  Prunus cerasifera Lowell Ahart 2012-10-28 18536 Butte On the north side of the paved park road, north of the bridge across Big Chico Creek, north of the Deer Pen, northeast of Cedar Grove, Lower Bidwell Park, Chico. 74 Comment
  JEPS120057  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18011 Butte 20 yards north of Big Chico Creek, south of the path, south of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC11998  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek. 1650 Comment
  LA208076  Prunus emarginata E. B. Copeland; 1931-7-28 650 Butte Jonesville, W of North Willow Creek 1650.0 Comment
  CHSC111154  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  CHSC6045  Prunus persica M. MacArthur 1968-6-19 229 Butte Ca. 10 ft. SE of Big Chico Creek near PSA bridge, Chico State College. 60 Comment
  CAS-BOT-BC357008  Pseudognaphalium luteoalbum Ella Dales Cantelow 1941-5-24 3573 Butte State Hy 24. Feather River Canyon 12.7 mi. n.e. of Oroville Comment
  CHSC28697  Pseudognaphalium thermale M. S. Taylor 1979-9-9 1924 Butte Inskip on the Skyway. 1467 Comment
  CHSC103937  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-22 16723 A 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
  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
  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
  CHSC32685  Pteridium aquilinum var. pubescens M. S. Taylor; L. Hanson 1981-3-31 3451 Butte SE side of Spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  SEINET10452826  Punica granatum Mary Susan Taylor Taylor 779 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC39392  Pycnanthemum californicum L. Ahart 1983-9-17 4436 Butte Ca. 1/4 mi se of Sitrling City. 1100 Comment
  SEINET10499008  Pycnanthemum californicum Lowell Ahart 1983-9-17 Ahart 4436 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC48673  Pyrola picta Vernon Oswald 1987-7-13 3104 Butte Near Jones Creek, ca. .25 mi n of the road connecting Humboldt and Humbug roads, ca. 1.25 mi (air) ne of Jonesville. 1645 Comment
  UC426928  Pyrola picta E. B. Copeland 1930-7-29 435 Butte Jonesville 1600 Comment
  UC474250  Pyrola picta H. F. Copeland 1930-7-21 Butte Jonesville, below cabin Jonesville Comment
  UC474258  Pyrola picta H. F. Copeland 1928-8-25 1018 Butte Jonesville, The Summit Jonesville Comment
  SD3510  Pyrola secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  CHSC109595  Pyrus communis Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-14 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  UC338404  Quercus Lemmon Butte Bidwell's Comment
  UCD47663  Quercus M. Wiesendanger 1928-6-1 1337 Butte Introduction Station, Chico. Comment
  CHSC101305  Quercus berberidifolia Lowell Ahart 2009-4-22 15577 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
  HSC32631  Quercus douglasii Gary S. Lester 1974-4-20 101 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  UCR237301  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18758 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
  CAS-BOT-BC86116  Quercus dumosa John Thomas Howell 1975-6-15 51080 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  SEINET13953256 Image available Quercus dumosa A. A. Heller 1916-1 12650 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  CHSC76054  Quercus garryana var. semota G. F. Hrusa; T. D. Wilfred 1997-5-7 13738 Butte Sierra Nevada. On SE-facing slopes facing Little Butte Creek above Magalia Reservoir, N of Magalia. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 725 Comment
  CHSC34807  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi e of Paradise. 640 Comment
  JEPS115710  Quercus kelloggii Lowell Ahart 2009-6-3 15812 Butte On the north edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC90929  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  LA205379  Quercus vacciniifolia E. B. Copeland; 1931-8-14 626 Butte Jonesville 1500.0 Comment
  CAS-BOT-BC104690  Quercus wislizeni A. A. Heller 1913-3-2 10689 Butte Hills two miles N of Oroville Comment
  UC143209  Quercus wislizeni Mrs. R. M. Austin Apr 1896 781 Butte near Chico Comment
  JEPS113212  Quercus wislizeni var. wislizeni Lowell Ahart 2007-3-28 13597 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville 73 Comment
  UC600476  Ranunculus aquatilis var. capillaceus H. F. Copeland 1920-7-12 Butte Jonesville; in creek Comment
  POM98907  Ranunculus aquatilis var. capillaceus C. C. Bruce 1897-04 1892 Butte [No location data on label] Comment
  CHSC29054  Ranunculus aquatilis var. hispidulus R. A. Schlising 1980-4-2 3541 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay; in ditches. 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-BC378988  Ranunculus arvensis Lowell Ahart 1977-4-28 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  UC176136  Ranunculus canus var. canus A. A. Heller 1913-4-7 10727 Butte Hills six miles north of Oroville Comment
  HSC100728  Ranunculus hebecarpus Lowell Ahart 2009-4-22 15592 Butte Along the Guardians Trail, ~100 yd. N of Pine Trail, Upper Bidwell Park, W of the intersection of Hwy. 32 and Ten Mile House Rd., 10 mi. NE of Chico. 382 Comment
  CHSC31806  Ranunculus occidentalis var. occidentalis L. Ahart 1974-3-18 334 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC110258  Ranunculus occidentalis var. ultramontanus L. P. Janeway 2012-6-2 10839 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  RSA4436  Ranunculus uncinatus var. parviflorus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CAS-BOT-BC74179  Raphanus raphanistrum Lowell Ahart 1980-4-19 2084 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC54389  Raphanus raphanistrum M. Bailey 1991-3-8 649 Butte North side of Butte Campus Drive, across from the Fire Training facility, Butte College Campus. Roadside. 76 Comment
  CAS-BOT-BC74263  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte Low hills 8 miles north of Oroville. Comment
  CHSC62490  Rhamnus ilicifolia B. Castro 1987-5-18 105 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive within general area of Foothill Woodland/Chaparral/Grassland mosaic. 445 Comment
  RSA31115  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 miles below Centerville in the Sierra foothills Comment
  CDA13732  Rhamnus purshiana var. purshiana G. F. Hrusa, T. D. Wilfred 1997-6-27 13910 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  JEPS95615  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3 1/2 mi SW of Forbestown (S of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  RSA754543  Rhamnus tomentella subsp. tomentella L. Ahart 2009-5-23 15724 Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  CHSC606  Rhododendron occidentale T. Morgue 1930-4-27 Butte Concow reservoir. 1066 Comment
  SFV10916  Rhododendron occidentale M. L. Vincent 1968-6-7 802 Butte 3 miles north of Magalea on Contolenc Road. Comment
  CAS-BOT-BC199745  Rhododendron occidentale var. californicum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC168126  Rhus aromatica Mrs. C. C. Bruce 1897-1-1 1819 Butte Chico Comment
  UC124165  Rhus trilobata Mrs. R. M. Austin 1896-4 767 Butte Little Chico Creek Comment
  SD2128  Ribes cereum E. B. Copeland 1931-6-11 Butte Jonesville. In the open, Kirby's Meadow. 1800 Comment
  UC478512  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  UCSB63912  Ribes nevadense Ahart, Lowell 1997-8-1 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 1432 Comment
  CAS-BOT-BC198954  Ribes roezlii var. roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville 1500 Comment
  CHSC37831  Ribes viscosissimum var. viscosissimum R. A. Schlising; K. Tarp 1982-7-24 4338 Butte E of Stirling City, below Diversion Dam on West Branch of Feather River, on Retson Road. At streamside. 975 Comment
  CHSC3420  Robinia pseudoacacia Judy Potter 1966-5-2 218 Butte Physical Science Bridge. Chico State College. Comment
  UC1594677  Rorippa curvisiliqua Lowell Ahart 1992-3-21 6738 Butte s Spillway Boat Launch Area (below the high water line Lake Oroville); below the high water line of Lake Oroville 243 Comment
  CHSC77982  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2000-5-13 8350 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC90958  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2005-4-18 11741 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC113450  Rorippa curvisiliqua var. orientalis Lowell Ahart 2014-7-10 19629 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC42699  Rorippa curvisiliqua var. orientalis Lowell Ahart 1987-5-6 5512 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  CHSC92507  Rorippa palustris var. occidentalis Lowell Ahart 2005-12-11 12509 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CHSC20548  Rosa californica M. S. Taylor 1975-7-4 833 Butte Ca. 500 yds e of Sacramento River, ca. 10 mi w of Chico. Comment
  SEINET10483517  Rosa gymnocarpa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4464 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC109630  Rosa multiflora Lowell Ahart 2012-5-14 18060 Butte North side of Big Chico Creek, just east of the bridge across Big Chico Creek, Manzanita Avenue, Middle Bidwell Park, Chico. 79 Comment
  JEPS94699  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte about 5 air mi sw of Gridley (on s side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
  JEPS103551  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte N side of Black Bart Road, 1 1/2 mi E of int. of Forbestown Rd and Black Bart Rd, 12 air mi SE of Oroville 548 Comment
  CHSC44348  Rosa rubiginosa Lowell Ahart 1988-4-30 5972 Butte Near a stream that is east of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CHSC3435  Rosmarinus officinalis Judy Potter 1966-2-16 Butte South wall Physical Science Building. Chico State College. Comment
  CAS-BOT-BC274227  Rostraria cristata Lowell Ahart 1982-4-29 3386 Butte Near the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC279950  Rotala indica Carl Wick; June McCaskill; G. D. Barbe 1983-9-14 4102 Butte Cooperative Rice Experiment Station, Biggs Comment
  CHSC116725  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte On the bottom of a large drainage, about 100 yards north of the ditch, about 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC45811  Rubus armeniacus L. P. Janeway 1987-5-7 2023 Butte Table Mtn Rd where it is at the base of the RR fill and overlooking Thermalito Forebay. 91 Comment
  CHSC6656  Rubus armeniacus M. MacArthur 1968-6-17 167 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  RSA719540  Rubus discolor Michael A. Vincent, K. Levings 2006-7-29 12886 Butte NE of Chico along Rte 32. Comment
  SEINET10483568  Rubus glaucifolius Mary Susan Taylor 1981-5-11 Taylor 3691 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 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
  SEINET10483576  Rubus laciniatus Mary Susan Taylor 1980-4-27 Taylor 2556 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  SEINET10483580  Rubus laciniatus Heidi H. Schmidt 1993-6-15 Schmidt 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CHSC45817  Rubus parviflorus L. P. Janeway 1987-6-27 2354 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of rd. 1554 Comment
  POM193375  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville. 1600 Comment
  CHSC26637  Rubus ursinus M. S. Taylor 1977-11-12 1538 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC46864  Rudbeckia hirta var. pulcherrima Vernon Oswald 1989-8-29 3972 Butte North side of Butte Creek downstream from the bridge on Humboldt Rd just s of Cherry Hill, ca. 2 mi (air) wsw of Jonesville. Meadow bordering the creek. 1414 Comment
  CHSC102831  Rumex conglomeratus Lowell Ahart 2009-6-18 15912 Butte On the west side and bottom of the steep bank, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  JEPS124099  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS107283  Rumex crispus Lowell Ahart 2005-4-14 11717 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CAS-BOT-BC421623  Rumex crispus Lowell Ahart 1980-5-10 2233 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC433477  Rumex dentatus M. S. Taylor 1982-5-22 4504 Butte Graylodge [Gray Lodge] Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC51275  Rumex salicifolius var. denticulatus Lowell Ahart 1990-10-3 6619 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  UC600492  Rumex salicifolius var. triangulivalvis H. F. Copeland 1932-8-17 Butte Butte Creek Jonesville 1500 Comment
  CAS-BOT-BC434070  Rumex transitorius A. A. Heller 1914-5-13 11396 Butte Along Butte Creek between Durham and Nelson 53 Comment
  SEINET11924839  Sagina apetala Unknown 1974-1 391 Butte Peter Ahart Ranch, about 0.5 m N and 2 mi E of Honcut, about 12 mi S of Oroville 150 Comment
  SEINET10537649  Sagina apetala var. barbata Mary Susan Taylor 1978-4-14 Taylor 1563 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  POM181762  Sagittaria latifolia H. F. Copeland 1923-8-14 546 Butte Nelson. Comment
  CAS-BOT-BC129903  Salix bonplandiana A. A. Heller 1913-4-4 10694 Butte Levee at Oroville Comment
  POM219074  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville. Kirby's Meadow. 1750 Comment
  POM106846  Salix exigua C. C. Bruce 1897-05 1784 Butte Little Chico. Comment
  CHSC108837  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 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
  JEPS119591  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  RSA0058981  Salix gooddingii Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17866 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC104078  Salix hindsiana A. A. Heller 1914-5-13 11397 Butte Between Durham and Nelson Comment
  CAS-BOT-BC104079  Salix hindsiana A. A. Heller 1915-5-16 11870 Butte Chico-Centerville road 3 miles from Chico Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south 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. 232 Comment
  CHSC76836  Salix laevigata L. P. Janeway 1999-11-15 6625 Butte Northern Sierra Nevada foothills. Along high water line of Lake Oroville, in ravine below Nelson Bar Road 0.5 mi north-northwest of Lime Saddle. 274 Comment
  LA208680  Salix laevigata A. A. Heller; 1914-3-21 11222 Butte 8 mi N of Oroville Comment
  CAS-BOT-BC125178  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  POM107141  Salix lasiolepis C. C. Bruce 1898-05 2480 Butte Little Chico Comment
  UC600412  Salix lemmonii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  UC456788  Salix melanopsis E. B. Copeland 1931-5-8 Butte Sandy Gulch Chico; Hooker Oak Ford, Sandy Gulch Comment
  UC446422  Salix scouleriana E. B. Copeland 1931-6-11 Butte Kirby's Meadow 1800 Comment
  CDA35057  Salpichroa origanifolia L. P. Janeway 2010-5-12 Butte Sacramento Valley; Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between creek and Humboldt Road. Comment
  CHSC48296  Salsola tragus Vernon Oswald 1985-9-16 1678 Butte Upper Bidwell park, Chico, in Lindo Channel at Five Mile Recreation Area. 79 Comment
  CHSC65569  Salvia sonomensis R. Banchero 1980-4-27 139 Butte Ca 6.1 mi NE of jcn of Keefer Rd and Cohasset Rd, ca 1.4 mi E of Cohasset Hwy. 609 Comment
  CHSC27253  Sambucus mexicana P. Moyer 1972-5-7 195 Butte N bank Chico Ck. By L.S. Bridge. CSUC campus. 60 Comment
  CHSC38290  Sambucus mexicana Vernon Oswald 1983-5-15 497 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near the end of the pavement. 91 Comment
  CHSC46832  Sambucus mexicana R. A. Schlising 1987-7-19 4535 Butte Coon Hollow. Comment
  UC102282  Sambucus mexicana Mrs. R. M. Austin 1896-7 612 Butte Colby Comment
  UC1575631  Sambucus mexicana Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2095 Butte near Chico Comment
  CAS-BOT-BC238613  Sambucus nigra subsp. caerulea Lowell Ahart 1980-5-12 2254 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC61636  Sambucus racemosa var. microbotrys Lowell Ahart 1993-9-8 7163 Butte About 1 mile east of Snow mountain. 2072 Comment
  SEINET12121443  Sanicula bipinnata S. E. Bigbee 1984-1 35 Butte ca 50 yds S of Butte Creek & ca 320 yds W of Covered Bridge, 6.2 i ESE of Chico 121 Comment
  POM82753  Sanicula bipinnatifida C. C. Bruce 1897-05 2057 Butte Little Chico Comment
  UC217478  Sanicula bipinnatifida H. M. Hall 1917-5-13 10301 Butte Paradise Comment
  UC600514  Sanicula graveolens E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creeks Jonesville 1700 Comment
  CHSC42672  Sanicula tuberosa Vernon Oswald 1985-4-3 1696 Butte Concow Rd. n of Lake Concow. 792 Comment
  POM219371  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Near Jones Creek Comment
  RSA4229  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1500 Comment
  SEINET10454591  Sanicula tuberosa Mary Susan Taylor 1980-4-18 Taylor 2521 Butte E side of Humbug Road, ca. 2 mi NE of Centerville; on dry bluff. With J.D. Jokerst. 488 Comment
  CHSC32126  Saponaria officinalis L. Ahart 1974-10-22 668 Butte By rd near Sly Creek Dam, near Pinkard Creek which is near Sly Creek Reservoir. 762 Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 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
  SEINET10939792  Scandix pecten-veneris Mary Susan Taylor 1981-5-1 Taylor 3589 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC44619  Sceptridium multifidum Vernon Oswald 1985-9-2 1935 Butte Concow Rd. ca. 6 air miles nne of Lake Concow at Rag Dump. Near Fall Creek. 1170 Comment
  RSA0101644  Sceptridium multifidum Harvey Monroe Hall 1914-7-30 9805 Butte Jonesville. 1524 Comment
  CAS-BOT-BC111374  Schoenoplectus acutus var. occidentalis Lowell Ahart 1981-8-31 3061 Butte Wyandotte Lake, E or Oroville. 450 Comment
  UCD49965  Schoenoplectus mucronatus Bellue 1947-9-11 s.n. Butte Afton Road, near Biggs. Comment
  CHSC78321  Scirpus congdonii Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CAS-BOT-BC30729  Scirpus diffusus M. S. Taylor 1978-7-18 1722 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
  CAS-BOT-BC30731  Scirpus diffusus A. A. Heller 1914-8-6 11638 Butte Sierra Nevada at Chico Meadows 1219 Comment
  UC600702  Scirpus diffusus H. F. Copeland 1928-8-17 1072 Butte Jonesville 1524 Comment
  UC1100920  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house (Butte Sink); , Greylodge Game Refuge Comment
  SEINET10905684  Scirpus setaceus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4047 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
  CHSC34801  Scleranthus annuus subsp. annuus M. S. Taylor 1980-4-18 2520 Butte E side of Humbug Rd, ca. 2 mi ne of Centerville. On bluff. 487 Comment
  CHSC30028  Scribneria bolanderi L. Ahart 1980-5-4 2173 Butte Pasture field southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  UC887501  Scrophularia californica A. A. Heller 1916-4-13 12322 Butte e Chico (Stilson Canyon) Comment
  CHSC27791  Scrophularia californica subsp. floribunda Steven R. Johnson 1978-4-25 15 Butte Ca. 22 km n of Chico, ca. 4.8 km s of Cohasset. 590 Comment
  CHSC52199  Scutellaria californica L. P. Janeway 1988-5-29 2702 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC55501  Scutellaria californica L. P. Janeway 1991-6-8 3994 Butte Side ravine on south side of Montgomery Bar Ravine, ca 0.3 mi from Lake Oroville high water mark. 377 Comment
  CHSC62752  Scutellaria californica L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4356 Butte About 2.2 mi northeast of Lake Wyandotte; along Stringtown Road 1.3 mi northeast of the saddle where the road starts down to Lake Oroville. 381 Comment
  POM70087  Scutellaria californica C. C. Bruce 1897-05 1825 Butte Little Chico. Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  SFV3240  Scutellaria tuberosa M. L. Vincent 1961-3-26 11 Butte Sierra Nevada Nelson Bar Road, 1 mile above Feather River bridge toward Pentz Road. Southeast of Paradise 330 Comment
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CHSC90984  Sedella pumila Lowell Ahart 2005-5-11 11802 Butte Steep slope on the south side of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the poor dirt road off of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  HSC86855  Sedum spathulifolium R. Rembowski 1975-4-15 2 Butte W of Covered Bridge, 8 mi. S of Butte Creek 122 Comment
  CAS-BOT-BC62124  Selaginella hansenii A. A. Heller 1913-4-6 10715 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC32766  Selaginella hansenii J. D. Jokerst 1981-3-29 1277 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  SEINET10470986  Selaginella hansenii A. Arthur Heller 1913-4-6 Heller 10715 Butte Hills near Big Chico Creek, east of Chico. Comment
  UCD135979  Selaginella hansenii L. Ahart 1974-1-6 294 Butte Peter Ahart Ranch, Honcut; along North Honcut Creek. 45 Comment
  CHSC28532  Selaginella wallacei M. S. Taylor; J. D. Jokerst, L. Ahart 1979-11-15 2289 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC86441  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 93 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CHSC86445  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 97 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CAS-BOT-BC213666  Senecio lewisrosei Lewis S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi. s. of Pulga, Canyon side 609 Comment
  CHSC108815  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte On the high east bank of Big Chico Creek, west of the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC113470  Senecio sylvaticus Lowell Ahart 2014-7-10 19607 Butte On the east side of the Skyway, about 1 1/4 miles (by road) south of the intersection of Skyway and Humbug Summit Road. 1575 Comment
  CHSC94012  Senecio sylvaticus R. Fischer 2005-4-30 675 Butte Collection from along Hwy. 32, ca. 5 miles north of Chico on the Big Chico Creek Ecological Reserve, on a canyon edge trail called the Overlook. 518 Comment
  CHSC69107  Senecio triangularis Lowell Ahart 1997-8-1 7767 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  UC179694  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte Chico Chico meadows 1219 Comment
  CHSC113286  Senecio vulgaris Lowell Ahart 2014-4-15 19353 Butte Steep sides of rocky point, below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 253 Comment
  JEPS115244  Senecio vulgaris Lowell Ahart 2009-4-3 15523 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS122269  Senecio vulgaris Lowell Ahart 2014-4-9 19329 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  CAS-BOT-BC364547  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC69442  Sericocarpus oregonensis Lowell Ahart 1997-9-6 7890 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  HSC72953  Sericocarpus oregonensis subsp. californicus M. S. Taylor 1980-9-12 3328 Butte W side of Hwy. 32, ca. 3 mi. N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft. W of the Hwy., N of a dirt road 976 Comment
  CDA43366  Sesbania punicea D. G. Kelch 2012-9-19 12 .354 Butte Oroville, immediately west of sewage treatment plant. Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  RSA724851  Setaria parviflora L. Ahart 2006-9-28 13383 Butte on the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CAS-BOT-BC240120  Setaria pumila John Thomas Howell 1961-9-22 36765 Butte North Fork of Feather River, 10 miles from Oroville Comment
  UCD92723  Setaria pumila G. F. Hrusa; T. D. Wilfred 1996-9-6 13573 Butte on E side of Butte Creek, approx. 1/2 mile NE of confluence with Howard Slough and immediately below McPherrin Dam (private and scheduled for removal). 23 Comment
  CHSC97725  Setaria sphacelata Lowell Ahart 2007-11-3 14563 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
  CHSC79358  Sherardia arvensis M. S. Taylor; J. Jokerst 1980-5-15 2628 Butte Ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  JEPS115247  Sherardia arvensis Lowell Ahart 2009-4-3 15533 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  SEINET10448357  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 A Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  POM193377  Sibbaldia procumbens E. B. Copeland 1930-7-6 418 Butte Jonesville. 2000 Comment
  LA205920  Sidalcea asprella subsp. asprella C. L. Hitchcock; 1952-5-28 19536 Butte Oroville - Forbestown Road, about 8 mi. E of Oroville Comment
  CHSC13725  Sidalcea calycosa J. G. Moore 1970-5-25 151 Butte Growing on a small stream. Paradise Golf Course, Paradise. Comment
  CHSC61324  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte On gravel bar along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  CHSC44086  Sidalcea hartwegii John E. Hunter 1986-3-28 36 Butte 9.6 mi. e of Hwy. 99 and .1 mi. n Hwy. 32. Comment
  CHSC90104  Sidalcea hartwegii M. A. Carlson 1991-4-12 18 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  UC725875  Sidalcea hartwegii A. A. Heller 1926-4-28 13934 Butte near Little Chico Creek; near Little Chico Creek Comment
  CHSC1047  Sidalcea hirsuta F. Johnson 1937-5-20 Butte Near old radio transmitter on Madrone St. 57 Comment
  UCD149878  Sidalcea hirsuta M. F. 1974-5-13 s.n. Butte Gray Lodge Wildlife Area, Field 5. Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  RSA4491  Sidalcea oregana subsp. spicata E. B. Copeland 1930-7-15 659 Butte Jonesville. Comment
  CAS-BOT-BC384468  Silene antirrhina Lowell Ahart 1983-7-29 4243 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  CAS-BOT-BC387069  Silene gallica Lowell Ahart 1988-5-12 5988 Butte about .25 mile NE of the Honcut Cemetery, Joie Osgood Ranch, about 3.5 miles E and 1.5 miles N of Honcut 60 Comment
  CHSC31020  Silene laciniata subsp. californica M. S. Taylor 1980-10-6 3353 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with N fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  UCD99006  Silene laciniata subsp. californica Frank Polach 1967-4-22 15 Butte 1/2 mile from railroad, Feather Falls. 914 Comment
  CAS-BOT-BC389292  Silene lemmonii H. F. Copeland 1920-8-2 196 Butte Jonesville 1219 Comment
  UC600622  Silene lemmonii H. F. Copeland 1930-7-21 Butte Jonesville Comment
  CHSC38425  Sisymbrium officinale Vernon Oswald 1983-4-4 276 Butte Upper Bidwell Park, Chico, on the north rim of the level of Horseshoe L. 146 Comment
  JEPS119982  Sisymbrium officinale Lowell Ahart 2012-4-30 17933 Butte On the sides of Bloody Pin Trail, about 100 yards west of Guardian Trail about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC135399  Sisyrinchium H. F. Copeland 1920-8-29 165 Butte Jonesville Meadow 1219 Comment
  UC726126  Smilacina stellata A. A. Heller 1919-5-17 13153 Butte near Stirling; Feather River 975 Comment
  CHSC92478  Solanum americanum Lowell Ahart 2005-11-20 12492 Butte On the east side of the North Fork of the Feather River, about 50 yards southwest of the Poe Power House. 275 Comment
  JEPS115053  Solanum americanum Lowell Ahart 2007-11-3 14573 Butte Below the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about 3/4 mile north of the Lime Saddle Campground, about 5 1/4 miles (air) southeast of Paradise 257 Comment
  RSA724846  Solanum americanum L. Ahart 2006-9-28 13377 Butte on the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CDA41197  Solanum parishii L. Ahart 2006-5-19 12633 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. Comment
  CHSC87448  Solanum parishii R. D. Fischer 2004-3-29 82 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along northern end of Humboldt Trail. 429 Comment
  CHSC76346  Solanum rostratum Paul Maslin 1999-7-7 Butte Campus of California State University, Chico; between the Continuing Education building and Big Chico Creek. In flower beds. 59 Comment
  SEINET7262102 Image available Solanum xanti E. B. Copeland 1930-7-27 453 Butte Jonesville Comment
  POM173671  Solidago canadensis subsp. elongata H. F. Copeland 1927-9-4 962 Butte Jonesville. Comment
  CAS-BOT-BC365380  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Chico Meadows 1219 Comment
  CHSC422  Solidago velutina subsp. californica E. Walker 1932-8-21 Butte Paradise. Comment
  CHSC44899  Sonchus asper Lowell Ahart 1988-7-31 6155 Butte Along the road gutter, north of small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  CHSC107248  Sonchus asper subsp. asper Lowell Ahart 2011-6-3 17359 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Urban. 60 Comment
  CHSC108129  Sonchus asper subsp. asper Lowell Ahart 2011-10-29 17723 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC108785  Sonchus asper subsp. asper L. P. Janeway 2011-6-7 10363 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
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 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
  JEPS115664  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By a small rock 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 Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC37529  Sonchus tenerrimus M. S. Taylor; L. Ahart 1982-10-11 5050 Butte Graylodge Wildlife Refuge, near check-in station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC110981  Sorghum halepense Lowell Ahart 2012-7-5 18281 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved park road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC6055  Sorghum halepense M. MacArthur 1968-6-19 238 Butte Ca. 15 ft. SE Big Chico Creek, opposited LS bld., Chico State College. 60 Comment
  CHSC20120  Spartium junceum M. S. Taylor 1975-4-26 524 Butte Scattered on e side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  SEINET10487734  Spartium junceum Melvin L. Conrad, Douglas G. LeDoux; Patricia L. Kenney 1973-6-5 Conrad 7035 Butte Roadside in paradise. Corolla lemon yellow. Spanish broom. 792 Comment
  RSA713000  Spergula arvensis L. Ahart 2006-4-23 12533 Butte On W side of Cherokee Road, about 200 yards S of the cattle chute and parking area, North Table Mountain, about 7 miles (air) N of Oroville. 424 Comment
  CHSC78139  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 6388 Butte On the bottom of a small wash, about 100 yards southeast of the barn, about 1/4 mile northeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  JEPS107747  Spergularia bocconi Lowell Ahart 2005-5-28 11827 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
  CHSC94891  Spergularia rubra Lowell Ahart 2006-9-28 13367 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  SEINET10483632  Spiraea prunifolia Mary Susan Taylor Taylor 444 Butte Campus of the California State University, Chico. 61 Comment
  CAS-BOT-BC421452  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back and east of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CHSC45023  Spondias dulcis L. P. Janeway 1988-9-9 Butte Chico; in hort by K. R. Stern Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC44403  Stachys ajugoides var. rigida Lowell Ahart 1988-6-23 6063 Butte North of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC52205  Stachys ajugoides var. rigida L. P. Janeway 1988-7-2 2957 Butte Along road to Coyote Gap 2.6 mi from bridge on French Cr. 982 Comment
  CHSC79523  Stachys ajugoides var. rigida G. F. Hrusa; T. D. Wilfred 1997-7-3 13969 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CHSC84886  Stachys ajugoides var. rigida R. D. Fischer 2003-6-22 3 Butte Chico Meadows near Butte Meadows. South side of rd. 26N09 as it passes through northern end of mdw. Near fence line of Boy Scout Camp, Camp Lassen. 1280 Comment
  POM17346  Stachys emersonii A. A. Heller, H. E. Brown, A. H. Heller 1902-5-10 5521 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC108744  Stachys pycnantha B. Castro; L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. 670 Comment
  CHSC48500  Stachys pycnantha Vernon H. Oswald 1986-7-7 2185 Butte Millsqap Bar Rd. 3.6 mi e of Bald Rock Rd. near Brush Creek. 914 Comment
  CHSC89466  Stachys pycnantha R. D. Fischer 2004-7-18 447 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near end of park property. Along drainage between road and Big Chico Creek. 216 Comment
  JEPS118641  Stachys pycnantha B. Castro and L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. Berry Creek 7.5' Quad. Comment
  POM181715  Stachys rigida subsp. quercetorum H. F. Copeland 1923-4-6 213 Butte Nelson. Comment
  CHSC52077  Stachys stricta B. Castro 1987-7-24 187 Butte Between curve in Table Mtn Blvd and the W. Pacific RR line. 103 Comment
  CHSC52207  Stachys stricta L. P. Janeway 1988-6-26 2882 Butte SE rim of Coon Ridge, overlooking Nance Cyn; ca 0.6 mi NE of the power lines (high voltage). S-facing seep at the rim. 182 Comment
  CHSC45266  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow. On the bed of the creek. 1889 Comment
  CHSC61309  Stellaria crispa Lowell Ahart 1993-7-22 7089 Butte In the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC41254  Stellaria longipes var. longipes S. C. Morey 1983-7-21 470 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC35039  Stellaria nitens R. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4003 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CHSC58904  Stellaria obtusa Lowell Ahart 1992-7-21 6817 Butte Along a small wash and in meadows, north-west of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC392186  Stephanomeria lactucina E. B. Copeland July 1929 Butte Jonesville Comment
  LA9449  Stipa lettermanii E. B. Copeland; 1929-7-16 342 Butte Jonesville 1550.0 Comment
  JEPS120098  Stipa miliacea var. miliacea Lowell Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  SEINET10508399  Stipa pulchra Mary Susan Taylor 1979-5-4 Taylor 1997 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  CHSC4162  Streptanthus diversifolius R. Carter 1966-4-21 349 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. 274 Comment
  UCSB63727  Streptanthus diversifolius Ramsey, Ellen 1986-4-1 Butte N end of Table Mountain ca. 400 yds. W of Table Mountain Cherokee Road ca. 6 mi. N of Oroville 243 Comment
  CHSC93961  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 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
  CHSC555  Streptanthus polygaloides R. Carter 1964-6-15 127 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff on Hwy. 40A on S side of highway. 609 Comment
  CHSC95054  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte Northern High Sierra Nevada. Northwest side of Rim Road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Southeast-facing slope near ridge top. 847 Comment
  UCD116302  Streptanthus tortuosus Robert E. Preston 1984-6-19 462 Butte 12 km NE of Oroville, Oro-Quincy Hwy on north side of Canyon Creek bridge. 305 Comment
  CHSC36693  Streptanthus tortuosus var. suffrutescens R. E. Preston 1982-4-25 267 Butte Cape Horn, w fork of Lake Oroville, ca. 4.5 mi se of Paradise. 426 Comment
  LA44530  Styrax redivivus A. A. Heller; 1915-5-25 11891 Butte Sierra Nevada, ridge above Enterprise 609 Comment
  UCD67369  Styrax redivivus Leslie Goldberg 1992-5-16 17 Butte Pulga, side of Road along north fork Feather River. Comment
  CHSC51880  Swertia albicaulis var. nitida L. P. Janeway 1987-6-13 2196 Butte Along Ponderosa Way (Rim Rd) 3.8 mi NE of Jarbo Gap. 883 Comment
  CHSC40316  Symphoricarpos mollis Lowell Ahart 1985-5-22 5026 Butte About 1/2 mile east of Little Bald Rock. 1066 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
  CAS-BOT-BC98957  Symphyotrichum foliaceum var. parryi A. A. Heller 1928-7-25 14697 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  JEPS58975  Symphyotrichum spathulatum J. Thomas Howell 1961-9-22 36727 Butte Oroville Sierra Nevada, Feather River 53 Comment
  CHSC69037  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS115151  Symphyotrichum subspicatum Lowell Ahart 2009-11-19 16553 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC37076  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Ca 100 m N of check-in station, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley. 35 Comment
  CAS-BOT-BC221937  Taeniatherum caput-medusae Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1609372  Tauschia kelloggii Lowell Ahart 1993-6-26 7029 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge, w of the Lost Creek Reservoir 1188 Comment
  CHSC12405  Tellima grandiflora Lowell Ahart 1973-5-31 Butte Near Little North Fork, Feather River. 1066 Comment
  CAS-BOT-BC392313  Thalictrum fendleri H. F. Copeland 1920-8-29 155 Butte Jonesville 1219 Comment
  CHSC51064  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-12 350 Butte E of Philbrook Reservoir. In small stream. 1889 Comment
  CHSC111385  Thalictrum fendleri var. polycarpum Lowell Ahart 2012-4-30 17946 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CAS-BOT-BC77719  Thelypteris nevadensis Lowell Ahart 1981-9-15 3154 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CAS-BOT-BC88199  Thysanocarpus curvipes A. A. Heller; H. E. Brown 1902-5-12 5528 Butte Berry Canyon (near Clear Creek). Comment
  CHSC3245  Thysanocarpus curvipes Virginia Hagaman 1966-3-2 10 Butte 3.2 miles north of 99E on Neal Road. 243 Comment
  CHSC3589  Thysanocarpus curvipes Susan Carrauthers 1966-2-28 31 Butte Ca. 3 mi N.E. of Bidwell Golf Course and ca. near Salmon Hole of Chico Creek. 8 mi N.E. of city of Chico. Comment
  CHSC3774  Thysanocarpus curvipes R. L. Adams 1964-3-24 85 Butte 1 mi. W. Chico on W. Sacramento Ave. on S. side of road in orchard 20' from road. W. of Chico. Comment
  CHSC43452  Thysanocarpus curvipes Lowell Ahart 1978-4-19 1657 Butte At the overlook at Feather Falls, about 6 miles north of the town of Feather Falls. 548 Comment
  CAS-BOT-BC88221  Thysanocarpus curvipes Lowell Ahart 1981-4-6 2741 Butte Near the old homestead on the south side of the South Butte, Sutter Buttes. 350 Comment
  CAS-BOT-BC88222  Thysanocarpus curvipes Lowell Ahart 1982-3-13 3251 Butte About 100 meters west of the dam that is aobut 0.5 mile east of Richardson Springs, about 12 miles northeast of Chico. 160 Comment
  SEINET10448592  Thysanocarpus curvipes Mary Susan Taylor 1975-4-26 Taylor 520 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC38427  Thysanocarpus curvipes var. elegans Vernon Oswald 1983-5-14 482