Search Results — 2000 specimen records retrieved (1603 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  UC725982  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Feather River near Stirling; Feather River near Stirling 975 Comment
  CHSC43580  Acer glabrum var. torreyi Vernon Oswald 1983-7-6 826 Butte Beside Humboldt Rd. 3.4 mi NE of Butte Meadows. Growing near Butte Creek in yellow pine forest. 1432 Comment
  RSA0045589  Acer negundo Lowell Ahart 2012-6-21 18222 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. 63 Comment
  CHSC109627  Acer saccharinum Lowell Ahart 2012-5-17 18087 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 76 Comment
  CHSC249  Achillea millefolium M. Anthony 1954-5-30 Butte Rag Dump 5. 609 Comment
  CHSC38314  Achillea millefolium Vernon Oswald 1983-5-27 568 Butte Upper Bidwell Park, Chico, on the s edge of the Golf Course s of Chico Creek. 97 Comment
  CAS-BOT-BC216461  Achnatherum occidentale subsp. californicum Javier Penalosa 1962-6-18 2467 Butte Near confluence of French and Peavine Creeks 640 Comment
  UC590008  Achnatherum occidentale subsp. californicum P. L. Johannsen 1936-7-17 933 Butte 2 1/2 mi sse Butte Meadows; Lassen National Forest, Paynes Cr. Quadrangle 1554 Comment
  CAS-BOT-BC218051  Achnatherum stillmanii R. F. Hoover 1965-10-16 9722 Butte Forest Ranch Comment
  CAS-BOT-BC29945  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 miles north of Oroville Comment
  CHSC75246  Achyrachaena mollis Jennifer Slater 1997-4-12 19 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC26746  Acmispon americanus var. americanus M. S. Taylor; M. Hayes 1977-8-16 1440 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  UCD103795  Acmispon americanus var. americanus A. A. Heller 1914-7-23 11615 Butte Chico Meadows. 1219 Comment
  UCD103809  Acmispon americanus var. americanus A. A. Heller 1917-7-26 12826 Butte Butte Meadows. 1402 Comment
  CAS-BOT-BC204850  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CHSC39293  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte Along the edge of a dirt road, about 3 miles east of Milsap Bar, about 25 miles northeast of Oroville. 1100 Comment
  CHSC50038  Acmispon brachycarpus Lowell Ahart 1990-4-15 6465 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of Oroville. 289 Comment
  CHSC33118  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-5 3614 Butte W side of spur rd, ca. 1/2 mi n of its jct with 21N35Y - Bryant Ravine Rd, ca. 1 air mi n of Feather Falls community. 853 Comment
  HSC43133  Acmispon micranthus Maralyn O'Meara 1974-4-20 290 Butte Table Mtn. 305 Comment
  CHSC44394  Acmispon nevadensis Lowell Ahart 1988-6-29 6088 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC113287  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 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
  CHSC31394  Acmispon wrangelianus J. D. Jokerst 1979-4-13 1191 Butte Top of North Table Mt., N of Cherokee Rd ca. 150 met. 396 Comment
  CHSC52673  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 348 Butte NW of Philbrook Reservoir, near streamlet. 1798 Comment
  JEPS108865  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 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
  CHSC13613  Adenostoma fasciculatum M. Jaeckel 1974-4-23 36 Butte 1524 Comment
  UC1562402  Adiantum aleuticum Vernon Oswald and Lowell Ahart 1990-6-20 4308 Butte between Philbrook Reservoir and Carr Mine (ca 0.5 mi w of Butte-Plumas Co line, s side of Philbrook Creek) 1981 Comment
  SEINET10529852  Adiantum capillus-veneris Mary Susan Taylor 1980-4-19 Taylor 2540 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC28879  Adiantum jordanii M. S. Taylor 1980-3-1 2340 Butte Looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  POM120400  Adiantum jordanii R. M. Austin 1882-10 49 Butte Unspecified Comment
  HSC93184  Aegilops triuncialis L. Ahart 1995-5-30 7581 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  CAS-BOT-BC202595  Aesculus californica Lowell Ahart 1979-6-2 s.n. Butte On N. Honcut Creek bank. Peter Ahart Ranch. Honcut 50 Comment
  UC175551  Aesculus californica A. A. Heller 1913-5-25 10756 Butte near Pents <Pentz> 152 Comment
  CHSC33946  Ageratina occidentalis M. S. Taylor; L. Ahart 1981-8-16 4206 Butte N side of 25N04, near upper Big Kemshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1950 Comment
  SEINET3916089  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte At intersection of Palermo Rd. & S.R. 70 ca. 4 mi. south of Oroville. Represents possible range extension.; 0 Comment
  CHSC50567  Agrostis capillaris Vernon Oswald 1990-7-9 4357 Butte Paradise Lake, ca. 3 mi north of Magalia. 777 Comment
  HSC96918  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, 12 mi. SE of Oroville 35 Comment
  JEPS107757  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  CAS-BOT-BC127372  Agrostis exarata John Thomas Howell 1955-6-15 30475 Butte Paradise. 518 Comment
  CHSC49495  Agrostis exarata Vernon Oswald 1987-5-18 2905 Butte Butte Creek Reserve on the north side of Butte Creek e of Hwy 99. 68 Comment
  SEINET10507086  Agrostis exigua Lowell Ahart, L. Hanson 1985-5-20 Ahart 5028 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CHSC46689  Agrostis idahoensis V. Oswald; L. Ahart 1989-8-15 3944 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. 1752 Comment
  JEPS95614  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte 3 1/2 air miles N of Oroville (S edge of Cottonwood Road, on E side of overpass over Hwy 70) 60 Comment
  UC1609046  Agrostis stolonifera Lowell Ahart 1993-7-23 7105 Butte about 6 (air) mi nw Feather Falls (about 100 yds w of the bridge across Fall River, w side of river); Fall River 1036 Comment
  SEINET10790425  Agrostis thurberiana Vernon H. Oswald, Lowell Ahart 1991-8-19 Oswald 4836 Butte T25N R5E sw/se/S6, Red Fir Forest. Spring-fed, marchy meadow and lake on the north side of Forest Rd 25N15 between Philbrook Reservoir and Coon Hollow. Occasional grass forming small tufts on the marshy meadow. 1768 Comment
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  JEPS119720  Ailanthus altissima Lowell Ahart 2012-6-28 18244 Butte On the north side of Big Chico Creek, east of Sycamore Pool, about 100 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC138420  Aira caryophyllea Lowell Ahart 1987-5-6 5546 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC28673  Aira caryophyllea M. S. Taylor 1976-3-30 1043 Butte Ca. 1/2 mi w of Cherokee Rd, ca. 2 mi ne of Oroville on Table Mountain. 373 Comment
  CHSC63546  Aira caryophyllea Vernon H. Oswald 1994-4-14 6106 Butte Old railroad grade along the N. Fork Feather River ca. 0.25 mi W of Stony Creek, E of Poe Powerhouse. 301 Comment
  SEINET10510827  Aira elegantissima Watts 1974-5-1 Watts 30 Butte Found un upper Bidwell Park, Chico, near Horseshoe Lake. Comment
  CHSC79996  Albizia julibrissin L. P. Janeway; B. Castro 2000-5-29 6746 Butte Sacramento Valley. South side of city of Chico; along W. 19th Street between Park Avenue and Broadway. 60 Comment
  SEINET10841174  Albizia julibrissin Mary Susan Taylor Taylor 780 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC37659  Alisma plantago-aquatica T. B. Devine 1981-8-31 763 Butte Robbers Gulch through Butte Creek Country Club Golf Course, Chico. 57 Comment
  CAS-BOT-BC445435  Alisma triviale A. A. Heller 1914-7-31 11630 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road, 6 miles from Chico. Comment
  UCD137971  Alisma triviale E. M. Johnston 1915-1 W 144 J Butte Biggs Comment
  UCD73057  Allium amplectens Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC460732  Allium amplectens Lowell Ahart 1978-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC460741  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  HSC38141  Allium amplectens Thomas W. Nelson, Jane P. Nelson 1976-5-9 2446 Butte Intersection of Palermo Rd. and SR 70, 4 mi. S of Oroville Comment
  POM110214  Allium amplectens C. C. Bruce 1897-05 1899 Butte [No locality information provided] Comment
  CHSC36904  Allium campanulatum R. A. Schlising; R. Banchero 1980-6-12 3692 Butte N part of county along Hwy 32, 0.25 mi s of Tehama County line. 1121 Comment
  CAS-BOT-BC465443  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  SEINET10472035  Allium campanulatum Mary Susan Taylor 1980-5-24 Taylor 2744 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC466716  Allium cratericola C. C., Mrs. Bruce 1899-1-1 1901 Butte Doe Mill Comment
  SEINET3884402  Allium cratericola D. W. McNeal, Todd McIntyre 1989-4-18 3373 Butte Top of Table Mountain just w. of Cherokee Rd., 6.4 mi s. of Hwy. #70 n. of Oroville.; 0 Comment
  SEINET10839451  Allium membranaceum Mary Susan Taylor 1982-6-24 Taylor 4737 Butte T23N R5E ne/se sec 30. Pulga SW quad. Shaded rdcut on Flea Valley Ridge, ca. l mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. 3600 ft. 1097 Comment
  CHSC96417  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  UCD80417  Allium peninsulare var. peninsulare CNPS SN Foothill Team 2005-5-26 SNNR 0204 Butte City of Chico, Upper Bidwell Park, off of the Guardian Trail SE of the intersection with the Humboldt Trail. 340 Comment
  CAS-BOT-BC262  Allocarya austiniae R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  RSA470050  Allophyllum gilioides subsp. gilioides H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  CAS-BOT-BC171273  Alnus incana subsp. tenuifolia H. F. Copeland 1929-6-12 s.n. Butte Jonesville, beside Jones Creek 1524 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  CHSC28537  Alnus rhombifolia M. S. Taylor 1979-10-13 2242 Butte Big Chico Creek, at end of Upper Bidwell Park Rd, ca. 10 mi e of Chico. 243 Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  SEINET269930  Alnus rhombifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows 1219 Comment
  UC436297  Alopecurus aequalis E. B. Copeland August, 1930 Butte above Jonesville Jonesville 1650 Comment
  CAS-BOT-BC138170  Alopecurus aequalis var. aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  SEINET3450790  Alopecurus carolinianus Unknown 2003-3-31 10030 Butte Oroville, Oroville, about 10 miles southwest, about 3/8 miles east of Riceton highway, about 20 yards north of Hamilton Road, about 50 yards east of the drain ditch, landplained rice field 20 Comment
  SEINET10790508  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil on floor of rice field, Peter Ahart Ranch, 2 mi. ne of Honcut. 50 Comment
  CHSC25071  Alopecurus howellii T. N. Casale 1974-4-24 26 Butte Ca. 0.9 mi ne of Keefer Rd. from its junction with Hwy 99. 54 Comment
  SACT000318  Alopecurus saccatus Annette Waters 1958-4-19 Butte in area which has recently been submerged and is now drying out, still wet. At edge of road in rocky alluvial soil. En route from Oroville to Chico, 2.6 miles southeast of junction with highway 99E Comment
  CHSC6638  Amaranthus M. MacArthur 1968-6-16 337 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 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
  CHSC51344  Amaranthus californicus Vernon Oswald 1990-8-14 4431 Butte West Branch of Lake Oroville, Vinon Gulch access, 0.5 mi north of Cherokee. Occasional on and along the track below the lower end of the paved launching ramp. 259 Comment
  JEPS119910  Amaranthus deflexus Lowell Ahart 2012-10-20 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. 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
  HSC97004  Ammannia coccinea L. Ahart 2006-8-5 13084 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  CHSC28620  Ammannia robusta M. S. Taylor. 1979-10-2 2213 Butte In sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CDA42886  Amorpha californica L. Ahart 2012-5-12 18027 Butte North side of a deep drainage, north of the large meadow, northeast of the old homestead, about 300 yards southwest of Ten Mile House road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  CDA42897  Amorpha californica L. Ahart 2012-6-9 18177 Butte On both sides of a small drainage, about 30 yards east of Ten Mile House Road, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  UC725515  Amsinckia A. A. Heller 1939-4-1 15364 Butte field near Radio Station, e of Chico Comment
  CHSC100976  Amsinckia intermedia L. P. Janeway 2008-3-18 9231 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC3751  Amsinckia intermedia R. L. Adams 1964-4-15 63 Butte W. side Webb Ave., 200 yds. From Rose Ave. Chico. 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
  UCD119626  Amsinckia intermedia R. R. Kehlor 1951-4-14 29 Butte Sierra Nevada, 6.25 miles E of Oroville - Mt. Ida Road. 48 Comment
  CHSC33135  Amsinckia menziesii J. D. Jokerst 1980-4-17 604 Butte Top of Table Mt, - N of Cherokee Rd. 426 Comment
  UC1111640  Amsinckia menziesii var. menziesii Francia Chisaki 1956-4-19 683 Butte 1.5 mi s of West Branch of Feather River (on Nelson Bar Road) Comment
  CHSC1390  Anagallis arvensis R. Carter 1964-6-10 111 Butte Ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt. on S side of garage. 243 Comment
  HSC32578  Anagallis arvensis Linda M. Barker 1974-4-20 147 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  POM76366  Anagallis arvensis C. C. Bruce 1897-04 1895 Butte Butte Creek. Comment
  UC463031  Anagallis arvensis E. B. Copeland 1931-7-20 Butte Albertine 1700 Comment
  JEPS95957  Anchusa officinalis Vernon H. Oswald 1999-4-24 9720 Butte Genetic Resource Center (old USDA Plant Introduction Station) in south Chico: T21N R2E SE1/4 NW1/4 Sect. 5, 230 ft, agricultural area. Localized weed growing in the NE corner of the intersection of farm roads directly S of the headquarters building. 70 Comment
  CAS-BOT-BC272864  Ancistrocarphus filagineus Ahart; Jokerst 1985-3-24 4854 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CHSC108806  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC8166  Andropogon glomeratus var. scabriglumis K. Henegar 1969-5-15 61 Butte Upper Bidwell Park, on n side of road opposite Bear Hole. Comment
  CHSC31625  Andropogon virginicus var. virginicus L. Ahart 1973-11-1 286 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40894  Angelica breweri Lowell Ahart 1985-7-24 5151 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET10473583  Anthemis cotula Mary Susan Taylor 1975-10-3 Taylor 939 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CHSC75972  Antirrhinum cornutum Lowell Ahart; Vernon H. Oswald 1999-8-13 8130 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
  CHSC12407  Aphanes occidentalis Lowell Ahart 1973-3-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45189  Aphanes occidentalis Lowell Ahart 1973-4-15 193 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC218522  Apiaceae Saichi Kawahara 1975-6-15 51117 Butte Skyway near Billie Road, Paradise 609 Comment
  CHSC32153  Apocynum cannabinum L. Ahart 1976-5-27 1133 Butte La Porte Rd, ca. 100 yds above its jct with Robinson Mill Rd, ca. 2 mi sw of Rackerby. 609 Comment
  CHSC50641  Apocynum cannabinum Lowell Ahart 1990-6-16 6514 Butte A small ravine, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC392109  Aquilegia formosa A. A. Heller 1914-6-22 11504 Butte About Chico Meadows 1219 Comment
  CHSC52689  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 365 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1682 Comment
  CHSC50023  Arabidopsis thaliana Lowell Ahart 1990-3-19 6416 Butte Borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  RSA0126413  Arabis glabra H. F. Copeland 1931-6-10 1519 Butte Jonesville; Colby Canyon. Comment
  SEINET10448427  Arabis platysperma Mary Susan Taylor 1980-8-2 Taylor 3205 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC110038  Arbutus menziesii Lowell Ahart 2012-10-28 18529 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  CHSC27214  Arbutus unedo P. Moyer 1972-4-9 156 Butte NE corner of library. 60 Comment
  JEPS103529  Arceuthobium campylopodum Lowell Ahart 2002-6-21 9753 Butte On the S side 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). 1095 Comment
  SD1140  Arceuthobium campylopodum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  CAS-BOT-BC410082  Arceuthobium occidentale John Thomas Howell 1955-6-14 30440 Butte near Magalia 731 Comment
  RSA632994  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27466 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  SD60289  Arctostaphylos manzanita A. A. Heller 1928-1-17 14473 Butte 1.0 mile below the Ten Mile House east of Chico. Comment
  CHSC109137  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-23 17775 Butte West edge of a small opening, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  JEPS119509  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-3-2 17761 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  UC725751  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1941-12-17 16338 Butte Neal Rd 3 mi below Paradise Comment
  RSA178611  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC725305  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Rd at Game Refuge above Bowle's Mansion; Paradise Comment
  UC726643  Arctostaphylos mewukka A. A. Heller 1942-1-29 16357 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  SEINET10973495  Arctostaphylos mewukka Lowell Ahart 1985-2-17 Ahart 4840 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  CAS-BOT-BC38561  Arctostaphylos mewukka subsp. truei Lewis S. Rose 1955-6-15 55103 Butte 6 mi. SE. of Paradise on pentz Road. 426 Comment
  UCD22542  Arctostaphylos nevadensis James I. Mallory 1969-10-2 362 Butte 1 mile east of Quartz Hill, 1 mile south of Fall River Campgound in abandoned logging road. Just north of center of the section. 1127 Comment
  CHSC67932  Arctostaphylos truei James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1683 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  UCD51954  Arctostaphylos truei John Thomas Howell 1975-6-15 51087 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET11987209  Arctostaphylos truei W. Knight, Knight, I. 1981-1 4109 Butte 27 mi N of Chico, Hwy 32 1067 Comment
  CAS-BOT-BC47368  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC47374  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51087 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  JEPS119514  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32 about 9 miles northeast Chico. Comment
  UC1121413  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-7-20 117 Butte 2 1/2 mi w Nimshew; Chico Quadrangle Comment
  CHSC35047  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-28 4115 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek at white Table Mountain. 1828 Comment
  JEPS98536  Aristida dichotoma Lowell Ahart 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 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
  CHSC97416  Aristida oligantha Robert Fischer 2006-6-27 1020 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  SEINET8521973  Aristida oligantha Kelly W. Allred 1991-1 5477 Butte along hwy 99, about 10 miles east of Chico, pine-oak woodland with annual grasses 427 Comment
  CHSC71208  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CAS-BOT-BC400424  Aristolochia californica Lowell Ahart 1980-3-8 2028 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC400434  Aristolochia californica John Thomas Howell; Gordon H. True 1969-4-9 45493 Butte About 5 miles north of Pentz on road to Magalia Comment
  CHSC10548  Aristolochia californica Lowell Ahart 1966-3-15 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC3545  Aristolochia californica Gary Dutton 1966-2-28 94 Butte Cliff area in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. Chico State College. Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  CHSC90617  Aristolochia californica Richard Ernenwein 1993-4-20 143 Butte Keefers Grist Mill monument site, Rock Creek Dr., c. 0.3 mi e of jct. of Rock Creek Rd. with Cohasset Hwy at Butte Lumber Co. mill, ca. 3 mi e of Chico airport. Comment
  CHSC45778  Arnica dealbata Vernon Oswald 1984-7-2 1332 Butte Intersection of Skyway (Bull Hill Rd.) and Humbug Rd. 1584 Comment
  CHSC46233  Arnica dealbata Pauleen Broyles 1987-7-5 1071 A Butte Ca 7 km n of Inskip and .4 km s of Bull Hill Road where it crosses Coon Creek. On n side of Coon Creek. 1530 Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  CHSC45628  Arnica discoidea Vernon H. Oswald 1987-7-16 3129 Butte West Branch of Feather River where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CHSC118071  Arnica fulgens L. P. Janeway 2016-5-16 12006 Butte Modoc Plateau. Devils Garden area; junction of Road 46N02 at Road 47N09/73/181; 2.0 air-km east of Green Spring Reservoir. 1585 Comment
  UC1562307  Arnica longifolia Vernon Oswald and Lowell Ahart 1990-7-19 4370 Butte ca 3 mi e of, slope on s side of Philbrook Crk, (.8 mi w of the Plumas Co line) Philbrook Reservoir; , Philbrook Creek 1965 Comment
  CHSC94568  Artemisia douglasiana Lowell Ahart 2006-9-11 13273 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC400636  Asarum hartwegii A. A. Heller 1919-5-18 13174 Butte Mosquito Creek between Appleton and Coutelence Comment
  SEINET10475951  Asarum hartwegii Mary Susan Taylor 1981-4-14 Taylor 3529 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  CHSC2520  Asclepias cordifolia W. Fitzwater 1958-4-19 Butte Chico Canyon, Chico area. 365 Comment
  SFV2805  Asclepias fascicularis M. L. Vincent 1962-9-12 288 Butte 0.25 miles off Pentz Road at small reservoir. 4 miles south of Paradise. Comment
  CHSC80584  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte South side of Biggs Princeton Road, about 1 mile east of Butte Creek, about 7 1/2 miles west of Biggs. 21 Comment
  CHSC6611  Asparagus officinalis M. MacArthur 1968-6-17 296 Butte SW yard of Building D on the Chico State College Campus. 60 Comment
  POM181763  Aspidotis californica H. F. Copeland 1926-03 542 Butte Near Iron Canyon. Comment
  CAS-BOT-BC68881  Aspidotis californica Judy Wheeler 1980-3-19 6 Butte Ca. 16.5 mi. E of Oroville on S side of Lumpkin Rd, 150 yd upstream on McCabe Creek 384 Comment
  CHSC23657  Aspidotis densa M. S. Taylor 1976-4-24 1075 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  SFV10668  Aspidotis densa M. L. Vincent 1967-6-26 680 Butte 0.25 miles west of Paskenta ranger station. Comment
  CAS-BOT-BC99218  Aster M. S. Taylor 1975-10-31 985 Butte Ca. 10 ft. n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico 152 Comment
  SEINET10474430  Aster chilensis subsp. ascendens Mary Susan Taylor 1978-9-9 Taylor 1911 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  POM193100  Aster eatonii E. B. Copeland 1930-8-26 487 Butte Jonesville 1500 Comment
  POM180851  Aster subulatus var. parviflorus H. F. Copeland 1923-1 866 Butte Nelson Comment
  CAS-BOT-BC178462  Astragalus gambelianus Lowell Ahart 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill 550 Comment
  CAS-BOT-BC178467  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC45902  Astragalus gambelianus Lowell Ahart; Jim Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 518 Comment
  CHSC826  Astragalus gambelianus A. Koopman 1929-3-28 Butte Chico Country Club road. 152 Comment
  CHSC12921  Astragalus pauperculus L. V. Ritter 1969-3-20 87 Butte Ca 200 yds. n of Rock Creek, .5 mi. e of Cohasset Rd. 76 Comment
  CHSC27665  Astragalus pauperculus Mike O'Bryan; Robert A. Schlising 1978-4-17 3220 Butte N of Forest Ranch, on ridge projecting into canyon of Big Chico Creek, ca 1 mi S jct Hwy 32 and Forest Ranch Road. Comment
  UCSB63844  Asyneuma prenanthoides Ahart, Lowell 1997-8-1 Butte West side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T24N, R5E, Section 4 1371 Comment
  UCD136292  Athyrium filix-femina var. californicum E. B. Copeland 1929-7-29 326 Butte Jonesville. 1600 Comment
  CAS-BOT-BC68690  Athyrium filix-femina var. californicum Lowell Ahart 1983-9-21 4461 Butte 3 miles north of the Sly Creek Dam, north of the Strawberry Valley, along a small stream which is called French Creek 900 Comment
  CAS-BOT-BC168562  Atriplex cordulata Lowell Ahart 1982-10-11 3861 Butte About 1/10 mile south-east of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  UCD150350  Atriplex fruticulosa Lee Silvernale 1963-10-8 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CHSC34024  Atriplex lentiformis L. Ahart 1981-7-26 3008 Butte A little e of the dirt rd, ca. 1 mi nw of Pennington Rd, on the n branch rd that leads to hunter parking areas, ca. 1/2 mi ne of the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  JEPS90625  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC38788  Avena barbata Vernon Oswald 1982-12-19 29 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CAS-BOT-BC145884  Avena fatua John Thomas Howell 1962-6-15 37530 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC2826  Avena fatua David Prall 1965-3-14 14 Butte At roadside of Neal Rd. 1 mile East of HW. 99E. 106 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
  CHSC27  Azolla filiculoides M. Anthony 1962-2-10 Butte Oxbow Lake inlet, e. of Sacramento River. 36 Comment
  CHSC41880  Baccharis pilularis subsp. consanguinea Lowell Ahart 1986-10-16 5403 Butte About 1 mile southwest of the Ponderosa Dam, about 3 miles northwest of Forbestown. 457 Comment
  CHSC32582  Bacopa eisenii L. Ahart 1979-9-27 2022 Butte About 1/2 mi w of Honcut along lower Honcut Rd. 33 Comment
  SBBG18210  Balsamorhiza sagittata M. Vincent 1962-4-20 218 Butte Stern Rd, ca. 0.5 mi W of Harrison Rd, Paradise Comment
  CHSC26835  Barbarea orthoceras M. S. Taylor; M. Hayes 1978-6-24 1654 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 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
  CAS-BOT-BC75953  Berberis pumila A. A. Heller 1962-6-15 37515 Butte Sierra Nevada. Magalia. 731 Comment
  JEPS122245  Bergia texana Lowell Ahart 2014-9-23 19865 Butte On the southeast part of Horseshoe Lake, near the northwest corner of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CAS-BOT-BC102077  Bidens frondosa Lowell Ahart 1974-9-30 s.n. Butte Peter Ahart Ranch, Honcut Comment
  SEINET10938147  Bidens frondosa Lowell Ahart 1985-11-7 Ahart 5238 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC28766  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 248 Butte On cliffs composing the S.E. bank of Little Chico Cr. 198 Comment
  CHSC25363  Boechera sparsiflora Marc P. Hayes 1977-3-20 3 Butte Ca. .4 km from the confluence of Bear Ranch Creek and North Fork Feather River, ca. 16 km wnw of Paradise. 500 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  CAS-BOT-BC75488  Bolboschoenus glaucus J. D. Jokerst; L. Ahart; M. S. Taylor 1982-4-29 1544 b Butte Grey Lodge Waterfoul Management area, dirt road north of Rutherford Road. Comment
  CAS-BOT-BC75492  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, southwest of Gridley. 35 Comment
  CHSC43741  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical cliff ca. 8 ft above the summer level of the rain. 91 Comment
  CHSC38790  Brachypodium distachyon Vernon Oswald 1983-5-4 426 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CHSC82428  Brachypodium distachyon Lowell Ahart 2002-5-7 9634 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
  RSA755643  Brachypodium distachyon L. Ahart 2009-5-15 15673 Butte About 80 yards W of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 271 Comment
  CAS-BOT-BC30310  Brassica nigra Lowell Ahart 1986-5-10 5273 Butte About 2 miles north and 0.25 mile east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 36 Comment
  CHSC31649  Brassica rapa L. Ahart 1978-3-11 1611 Butte In a field. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC90925  Brassica rapa Lowell Ahart 2005-4-14 11727 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS122190  Brassica rapa Lowell Ahart 2014-4-16 19359 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CAS-BOT-BC106322  Brickellia californica A. A. Heller 1923-8-14 13810 Butte Occasional in sand and gravel along Chico Creek at the Hooker Oak swimming pool. Comment
  CDA10540  Brickellia californica D. G. Kelch 2006-8-2 6 .348 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC30906  Brickellia californica M. S. Taylor 1979-10-28 2197 Butte Butte County line at Hwy 70, between boundary and Arch Rock Tunnel. 487 Comment
  SEINET10475011  Brickellia californica Mary Susan Taylor 1977-11-12 Taylor 1542 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CAS-BOT-BC145535  Briza minor John Thomas Howell 1962-6-16 37610 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC81588  Briza minor D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  JEPS5693  Brodiaea californica var. californica W. L. Jepson 1932-5-9 16366 Butte e Cana (on Red Bluff-Chico road) 57 Comment
  CHSC117441  Brodiaea elegans subsp. elegans Lowell Ahart 2016-5-24 20872 Butte On the west side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  SEINET3884962  Brodiaea hyacinthina var. greenei D. W. McNeal 1989-4-18 3372 Butte On Table Mtn., just w. of Cherokee Rd., 6.4 mi. s. of the jct. of Hwy #70 n. of Oroville.; 0 Comment
  CAS-BOT-BC484556  Brodiaea minor A. A. Heller 1914-7-24 11619 Butte Sioerra Nevada at Butte Meadows 1219 Comment
  SEINET9636477 Image available Brodiaea minor Carl B. Wolf 1937-5-14 8667 Butte Sacramento Valley, 4 1/2 miles west of Oroville on road to Richvale. 46 Comment
  CAS-BOT-BC27869  Brodiaea purdyi Carlton Elmer Purdy 1896-1-1 s.n. Butte Hills back of Chico Comment
  CAS-BOT-BC484574  Brodiaea purdyi Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  SEINET10533863  Brodiaea volubilis A. Arthur Heller 1913-3-28 Heller 10765 Butte Ditch along Table Mountain 8 miles north of Oroville. 600 feet. Comment
  SEINET10932607  Brodiaea volubilis H. E. Brown 1897-5-1 Brown s.n. 1897 Butte Collected near Clear Creek. 175 feet alt. Comment
  CAS-BOT-BC155943  Bromus commutatus Lowell Ahart 1983-6-26 4143 Butte Sierra Nevada. Along Ponderosa Way, ca. 0.5 mile south of the East Fork of Canyon Creek, ca. 13.5 miles northeast of Oroville. 550 Comment
  CAS-BOT-BC156071  Bromus diandrus John Thomas Howell 1962-6-15 37535 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC31416  Bromus diandrus L. Orme 1980-3-15 5 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of field. 55 Comment
  SEINET191115 Image available Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  UCD59302  Bromus diandrus A. A. Beetle 1941-6-27 2743 Butte 2 miles north of Lone Pine Forest Guard Station on Rt. 32. Comment
  CHSC2132  Bromus hordeaceus H. Silberman; D. Isaac 1949-5-9 Butte W side of football field, CSC campus. Comment
  CHSC56626  Bromus hordeaceus J. Lund 1980-3-24 Butte Chico Game Fish Farm, 0.2 mi east of Hwy 99, 1.0 mi north of Hwy 149. 76 Comment
  CHSC96549  Bromus hordeaceus L. P. Janeway 2006-4-30 8567 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  JEPS119865  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10527855  Bromus hordeaceus subsp. hordeaceus R. M. Austin Austin s.n. Butte Comment
  CHSC49513  Bromus inermis subsp. inermis Vernon Oswald 1987-6-23 3008 Butte Philbrook Rd. at the bridge over the W. Branch of the Feather River. On flood plain. 1511 Comment
  CHSC42141  Bromus japonicus Lowell Ahart 1979-6-9 1932 Butte East of Kunkle Creek, south-east of Paradise. 457 Comment
  CHSC39523  Bromus laevipes Lowell Ahart 1983-6-21 4058 Butte On the cut-bank along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  CHSC68912  Bromus orcuttianus Lowell Ahart 1997-7-11 7752 Butte South side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS87478  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte about 1 mi w of Lost Creek Reservoir 1188 Comment
  SEINET10934048  Bromus rubens A. Arthur Heller 1914-4-11 Heller 11279 Butte Hills 8 miles N of Oroville. Comment
  CHSC79877  Bromus sterilis G. F. Hrusa; T. D. Wilfred 1997-5-8 13754 Butte Sierra Nevada. SE-facing slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39deg 51' N; 121deg 34' W']. 725 Comment
  CDA31606  Bromus suksdorfii L. Ahart 2004-8-2 11333 Butte On both sides of the dirt County road, between Sky High Mine and Dresser Camp about 2 mile (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows. Comment
  CHSC84110  Bromus tectorum Lowell Ahart 2003-5-9 10120 Butte In an alfalfa field, on the south side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. 24 Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  CHSC43260  Calamagrostis canadensis Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5917 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  CHSC49525  Calamagrostis canadensis Vernon Oswald; Lowell Ahart 1987-7-1 3059 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the edge of the creek. 1813 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CAS-BOT-BC438357  Calandrinia ciliata John Thomas Howell 1962-6-15 37471 Butte Magalia 731 Comment
  SEINET4169758  Calliprora scabra A. A. Heller 1938-4-23 15047 Butte Between the Las Plumas road and Jarboe Pass on the Feather River Highway. Transition Life Zone 610 Comment
  CHSC82529  Callistemon citrinus Tara Morgan 2002-5-2 53 Butte Along many roadsides within the Chico area especially along highway 99. This particular collection is from the highway 32 and E. 8th st. intersection on the corner of the highway 99 overpass. 89 Comment
  SEINET10457151  Callitriche heterophylla Mary Susan Taylor 1982-8-14 Taylor 5140 Butte T20N R8E. Jct of French Creek and 21N56, 0.5 mi e of Mooretown Ridge Rd, ca. 3 mi n of Sly Creek Reservoir Dam, ca. 4 air mi n of Strawberry Valley. 4000 ft. 1219 Comment
  CHSC12181  Callitriche heterophylla var. bolanderi Lowell Ahart 1973-3-26 186 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC29268  Callitriche heterophylla var. bolanderi R. A. Schlising 1980-4-2 3540 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
  RSA726778  Callitriche heterophylla var. bolanderi L. Ahart 2007-4-16 13672 Butte About 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 63 Comment
  CHSC38283  Callitriche marginata Vernon Oswald 1983-4-6 285 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure located ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. In vernal pond. 85 Comment
  CHSC38284  Callitriche marginata Vernon Oswald 1983-4-6 286 Butte Upper Bidwell Park, Chico, in an old road ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 86 Comment
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  UC203864  Calochortus albus A. A. Heller 1914-5-8 11375 Butte above Clear Creek (on the Paradise road) Comment
  RSA369031  Calochortus albus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC37403  Calochortus coeruleus R. A. Schlising 1980-6-16 3723 Butte S of Butte Meadows along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC27985  Calochortus leichtlinii M. S. Taylor 1978-7-18 1702 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CAS-BOT-BC489974  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  SEINET8197363  Calochortus luteus B. Nightengale 1961-4-29 63 Butte Near highway between Paradise and Chico, 6 miles SW of Paradise. 366 Comment
  CHSC44982  Calochortus monophyllus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14 km ne of Chico municipal airport. 500 Comment
  CHSC84919  Calochortus monophyllus Janice Morris 1995-4-24 91 Butte Ca. 1/2 mi. s of Mud Creek, 1/2 mi e of Richardson Springs Resort. 304 Comment
  CHSC41463  Calochortus nudus Lowell Ahart 1986-7-2 5340 Butte North of the dirt road, 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CHSC34487  Calochortus superbus J. D. Jokerst; R. A. Schlising 1979-5-18 245 Butte Sides of Cherokee Rd, 3.0 mi S of town of Cherokee (at Historical Monument). Comment
  CHSC38876  Calochortus superbus Vernon Oswald 1983-5-18 505 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power line. 243 Comment
  POM109611  Calochortus superbus C. C. Bruce 1897-05 2117 Butte Butte Creek. Comment
  UCD129684  Calycadenia fremontii Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico. Comment
  RSA0037495  Calycadenia multiglandulosa Lowell A. Ahart 2013-7-1 18817 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CAS-BOT-BC270049  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  UCD129745  Calycadenia multiglandulosa Gerald D. Carr 1981-9-26 1161 Butte around 3 miles northeast of Honcut, on the Lowell Ahart Ranch. Comment
  RSA584737  Calycadenia oppositifolia J. T. Howell 1955-6-15 s.n. Butte West Branch of North Fork of Feather River. 183 Comment
  UC1876185  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vic. Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  RSA255510  Calycadenia spicata Gerald D. Carr 1971-5-23 552 Butte Larkin Road, 1.1 miles SW of Oroville Dam Blvd. Comment
  JEPS106137  Calycadenia truncata Lowell Ahart 2004-7-11 11222 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  UC89045  Calycadenia truncata H. E. Brown Nov 15 1896-Nov 30 1896 121 Butte near Clear Creek 53 Comment
  UC726547  Calycadenia truncata A. A. Heller 1941-10-5 16332 Butte Comment
  SEINET10475221  Calycadenia truncata subsp. scabrella Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4153 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  CAS-BOT-BC275387  Calycadenia truncata var. truncata Lowell Ahart 1980-7-20 2468 Butte Near the Suspension Bridge, Lake Oroville 330 Comment
  HSC96983  Calycanthus occidentalis L. Ahart 2006-6-9 12662 Butte W side of Bardees Bar Rd., 1/8 mi. W of the bridge across the N Fork of the Feather River at Bardees Bar, 2.75 mi. SW of Pulga 386 Comment
  RSA168723  Calycanthus occidentalis R. M. Straw 1962-6-26 2194 Butte Canyon of Middle Fork of the Feather River near Millsaps Bar. [Milsap Bar] 305 Comment
  CHSC33650  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3166 Butte North of Magalia along the Skyway, 0.6 mi S of De Sabla Reservoir. Comment
  CHSC91261  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2005-5-29 8401 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  SEINET10448264  Capsella bursa-pastoris Mary Susan Taylor 1975-3-3 Taylor 399 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
  CHSC50317  Cardamine breweri var. breweri Vernon Oswald; Lowell Ahart 1990-5-29 4263 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CAS-BOT-BC37374  Cardamine californica A. A. Heller 1919-3-29 13092 Butte Feather River near Yankee Hill. Comment
  CHSC48324  Cardamine nuttallii var. covilleana Vernon Oswald 1984-7-2 1335 Butte Humbug Summit. 2046 Comment
  CAS-BOT-BC37877  Cardamine oligosperma A. A. Heller 1914-4-14 11290 Butte Hills 8 miles north of Oroville. In a grain field 8 miles north of Oroville. Comment
  CHSC113301  Cardamine oligosperma Lowell Ahart 2014-4-9 19335 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  UC1736729  Cardamine pachystigma var. dissectifolia Dean W. Taylor 1997-3-13 15915 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  JEPS117181  Carex Lowell Ahart 2010-4-23 16579 Butte Lawn of home #1082, near the middle of and north side of E7th Street, between Sycamore Street and Linden Street, Chico 63 Comment
  CAS-BOT-BC18463  Carex abrupta L. P. Janeway 1986-9-1 1826 Butte East end of Philbrook Reservoir. 1691 Comment
  CHSC52276  Carex abrupta L. P. Janeway; C. A. Janeway 1986-9-13 1851 Butte Wide flat meadow along Humbug Rd ca 1 1/2 mi SW of Humbug Summit. 1859 Comment
  CHSC94002  Carex amplifolia R. D. Fischer 2004-6-20 782 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In drainage ditch at north end of camp where Scout Road passes through Chico Meadows. 1371 Comment
  CHSC42371  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  POM219507  Carex barbarae H. F. Copeland 1923-4-8 s.n. Butte Near Butte Creek, lowlands of Butte County. Comment
  SEINET6417024 Image available Carex bolanderi L. Janeway, Gog, L 2008-1 3199 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  SEINET7552625 Image available Carex bolanderi Robert F. C. Naczi, Lawrence P. Janeway 2004-7-24 10522 Butte ca. 2.5 mi NE of village of Butte Meadows along E side of Butte Creek, downslope from (W of) Humboldt Road 1396 Comment
  UC1609336  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek); Bolt Creek 1325 Comment
  JEPS116653  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Campus of California State University, Chico Chico (between Merriam Library, the new student services building,and Warner Ave.); Sacramento Valley 59 Comment
  CAS-BOT-BC34372  Carex cusickii H. F. Copeland 1935-7-28 1500 Butte Jonesville. 1500 Comment
  CAS-BOT-BC34373  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte Meadow on south side of Butte Creek 0.5 mile west of Cherry Hill. 1402 Comment
  CHSC107598  Carex cyrtostachya Lowell Ahart 2011-7-9 17574 Butte Southeast edge of a large open bare granite area, about 3/8 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CHSC78278  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing 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
  JEPS121376 Image available Carex cyrtostachya P. F. Zika, B. Wilson, L. Ahart, L. Janeway 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles SE of Sugar Pine Point, Pinkard Creek drainage, W northern Sierra Nevada Highlands (n SNH). Comment
  SEINET13095768  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper West Branch Know-Nothing Creek, ca 1 mi SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca 4 air mi NE of Feather Falls. 1220 Comment
  CHSC35709  Carex densa J. D. Jokerst 1982-5-19 1581 Butte Artificially watered planters in the southern most parking lot of the Butte College Campus. Comment
  CHSC59003  Carex echinata subsp. echinata Lowell Ahart 1992-7-26 6856 Butte In a small man made pond, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  CHSC96875  Carex echinata subsp. echinata Lowell Ahart 2007-6-12 14078 Butte In shallow water (small spring), about 70 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville. 974 Comment
  CAS-BOT-BC20004  Carex feta Lowell Ahart 1988-6-23 6065 Butte North of Forbestown Road, about .08 mile east of the intesection of Black Bart Road and Forbestown Road. 670 Comment
  UCD140309  Carex feta L. P. Janeway 1988-6-14 2783 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  SEINET7468094 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville 1720 Comment
  UC406288  Carex fracta E. B. Copeland 1929-7-20 Butte Jonesville 1500 Comment
  SEINET10823215  Carex fracta Lowell Ahart 1982-9-29 Ahart 3837 Butte Small & normal size. On damp soil on banks of Pinkard Creek, 1.5 mi n of Lost Creek Reservoir Dam, 3.5 mi nw of Strawberry Valley. Yellow Pine Forest. 1200 Comment
  SEINET7485255 Image available Carex gracilior Peter F. Zika 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands (CaRH) 640 Comment
  HSC87064  Carex heteroneura L. P. Janeway, Robert A. Schlising 1988-7-22 3065 Butte Upper reaches of Philbrook canyon, 0.7 mi. W of the pass 1890 Comment
  UCD140427  Carex heteroneura L. P. Janeway 1986-9-1 1827 Butte east end of Philbrook Reservoir. 1691 Comment
  SEINET11173357  Carex heteroneura var. heteroneura Unknown 1999-7-17 6508 Butte Butte County Comment
  CHSC110350  Carex hirtissima L. P. Janeway 2013-5-5 11096 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC52867  Carex hirtissima L. P. Janeway 1989-5-13 3239 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  RSA739650  Carex hoodii L. P. Janeway, Linus Gog 2008-7-19 9442 Butte Butte County: High Cascade Range, N side of Scotts John Creek at crossing of Road 26N27 (The connector betw Humboldt Road and Humbug Summit road). 1740 Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CHSC44662  Carex jonesii L. P. Janeway 1987-6-27 2345 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along Concow Rd. 1478 Comment
  JEPS105629  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring 1519 Comment
  POM183141  Carex jonesii H. F. Copeland 1929-6-10 1245 Butte Jonesville. 1524 Comment
  CHSC100934  Carex laeviculmis R. A. Schlising; R. Preston, R. Banchero 1982-6-23 4302 Butte Seep area in forest. 1219 Comment
  CHSC43884  Carex laeviculmis L. P. Janeway 1987-6-26 2295 Butte At Rag Dump. Near Fall Creek. 1173 Comment
  CHSC44931  Carex laeviculmis Lowell Ahart 1988-7-31 6154 Butte Road gutter, north of a 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
  CAS-BOT-BC31121  Carex lemmonii Herbert Faulkner Copeland 1930-7-25 1362 Butte Jonesville. Meadow below the cabin. 1524 Comment
  SEINET12649537 Image available Carex leporinella Lowell Ahart 2010-1 17218 Butte 1918 Comment
  CHSC42385  Carex multicaulis Lowell Ahart 1987-5-12 5642 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  RSA0115349  Carex multicaulis Lowell A. Ahart 2013-5-27 18709 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  SEINET10752877  Carex multicostata Vernon H. Oswald, Lowell Ahart 1988-7-26 Oswald 3630 Butte Snopw Mt. region located ca. 6 air mi SE of Jonesville. Comment
  CHSC52260  Carex nebrascensis L. P. Janeway; Patty Costello 1987-9-5 2578 Butte NW side of Big Chico Cr below the road to Soda Springs campground near Hwy 32. 1127 Comment
  CHSC45060  Carex nervina Vernon Oswald 1983-7-19 879 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  UCD140541  Carex nervina L. P. Janeway; R. A. Schlising 1988-7-22 3056 Butte Coon Hollow Creek. 1920 Comment
  CHSC52233  Carex pachystachya L. P. Janeway 1987-6-19 2238 Butte Along Sly Creek at crossing of dirt road to the SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  CHSC82977  Carex pellita L. P. Janeway; B. Castro 2002-8-11 7695 Butte Northern High Sierra Nevada. Northwest side of Hwy 70 1.3 km northeast of Jarbo Gap. Roadside. 671 Comment
  JEPS104628  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  UCSB63750  Carex praegracilis Janeway, L. 1996-5-27 Butte Cherokee quad.; T21N, R4E, NW1/4 of NW1/4 of sec. 4; south side of Lunt Road; 300 ft. east of Nelson Bar Road; between Lunt Road and a branch of Hodapp Creek 457 Comment
  CHSC102213  Carex rossii L. P. Janeway 2009-11-14 9962 Butte High Cascade Range. North side of Scotts John Creek at corssing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). 1740 Comment
  CHSC48556  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-1 2929 Butte Near outlet of the lake of the SE-most headwaters of Butte Cr. 1935 Comment
  CHSC107571  Carex simulata Lowell Ahart 2011-8-23 17645 Butte Along a small stream, in the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CAS-BOT-BC116735  Carex subfusca Herbert Faulkner Copeland 1932-7-14 s.n. Butte Jonesville, along ditches and in damp places. Comment
  CHSC52879  Carex subfusca L. P. Janeway 1987-7-4 2428 A Butte Near seepy area along road to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CHSC52883  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2991 Butte At Crane Valley (upper Big Kimshew Creek); a large montane meadow. 1569 Comment
  SBBG128004  Carex vernacula L. Ahart 2010-9-28 17264 Butte S edge of a 10 acre meadow, ca. 100 yards E of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1886 Comment
  SEINET12569333 Image available Carex xerophila L. P. Janeway 2006-1 8595 Butte Northern Sierra Foothills: "Magalia Serpentine," east side of Coutolene Road, between that road and the first bend in the road down to Magalis Dam 707 Comment
  CAS-BOT-BC248998  Castilleja Mrs. H. C. Cantelow 1941-5-25 s.n. Butte 2 miles west of Arch Rock, Feather River Canyon, on State highway 24 Comment
  CAS-BOT-BC249115  Castilleja affinis Lewis S. Rose 1945-5-12 45025 Butte Richardson Springs 304 Comment
  CHSC78101  Castilleja affinis subsp. affinis Caleb E. Casey 1999-4-9 Butte South rim trail. Upper Bidwell Park one half mile before Bear hole. 106 Comment
  UC885148  Castilleja affinis subsp. affinis A. A. Heller 1916-4-13 12319 Butte e of Chico; Stilson Canyon Comment
  JEPS115589  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS124026  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-6-16 20242 Butte About 3 miles (by road) northwest of Fall River Bridge, about 4 1/2 miles (air) northwest of Camp 18, about 8 miles (air) northeast of Feather Falls. Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  CHSC111352  Castilleja attenuata Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18012 A Butte On dry excellent soil, on the north side 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 southwest of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC28689  Castilleja campestris subsp. campestris M. S. Taylor 1979-5-6 1999 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC725423  Castilleja campestris subsp. campestris A. A. Heller 1938-5-13 15078 Butte e of Richvale (on U.S. Hwy 99E, near the Y) Comment
  CHSC1828  Castilleja exserta E. Canfield 1904-4-23 Butte 76 Comment
  CHSC43766  Castilleja lacera Vernon Oswald 1984-4-4 1117 Butte Humbug Rd., 1.6 mi s-w of its jct. with Nimshew Ridge Rd., ca. 3 mi w of Magalia. 670 Comment
  CHSC62585  Castilleja lacera L. P. Janeway 1993-4-27 4332 Butte Upper Bidwell Park, Chico. Steep southeast-facing slope just below the rin, overlooking Day Camp, ca. 0.3 mi east of the powerlines. 228 Comment
  UCD122595  Castilleja lacera Gerald D. Carr 1972-5-9 698 Butte Hurleton, ca. 10 mi. E of Oroville on Forbestown Rd. Comment
  CHSC114951  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte Road cut on the east side of Oroville Quincy Highway (162), about one mile north of the suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. 335 Comment
  CDA33627  Castilleja lineariloba R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  UC492736  Castilleja miniata H. F. Copeland 1932-7-24 Butte above Butte Creek Meadows (w wall of Butte Creek drainage, near rim); Jonesville, Butte Creek Comment
  POM43184  Castilleja subinclusa C. C. Bruce 1897-06 1938 Butte Little Chico. Comment
  UC403964  Catalpa speciosa C. H. Shinn 1897-1 Butte Chico Forest Station Comment
  CAS-BOT-BC40501  Caulanthus lasiophyllus Lowell Ahart 1983-5-7 3966 Butte Peter Ahart Ranch, about 1.5 miles north and 2 and 1/8 miles east of Honcut. 50 Comment
  SEINET10493626  Ceanothus cuneatus Lowell Ahart 1985-3-4 Ahart 4845 Butte On red rocky soil near Kunkle Res., about 2 miles south of Paradise. Comment
  UC224215  Ceanothus cuneatus var. cuneatus H. E. Brown Mar 2 1897-Mar 22 1897 157 Butte near Clear Creek 53 Comment
  UCD123472  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 815 e Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1.0 road miles from Centerville Road on Bean Flat Road . 15.1 km 74 deg. (True) ENE of Chico. 243 Comment
  CAS-BOT-BC50776  Ceanothus integerrimus Lewis S. Rose 1968-6-12 68112 Butte Feather River Canyon - Pulga 487 Comment
  CAS-BOT-BC50825  Ceanothus integerrimus Clarence R. Quick 1952-6-30 52 -99 Butte Sierra Nevada - Ridge-top, Big Bar Mt., east of Pulga Comment
  JEPS115617  Ceanothus integerrimus Lowell Ahart 2009-5-15 15693 -A Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  RSA25632  Ceanothus integerrimus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  RSA755044  Ceanothus integerrimus L. Ahart 2009-5-15 15693 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
  UC1070764  Ceanothus integerrimus C. G. Albertus 1933-5-26 4 Butte 2 mi e Paradise; Chico quad. 152 Comment
  UC203673  Ceanothus integerrimus A. A. Heller 1914-6-22 11502 Butte Chico Meadows 1219 Comment
  UC80027  Ceanothus integerrimus Brandegee 1892-1 Butte Forest Ranch Comment
  SEINET12210559  Ceanothus integerrimus Unknown 1970-1 118 Butte ca 20 mi N of Oroville, on left side of Hwy. 70 Comment
  UCSB62944  Ceanothus integerrimus Sarr, Dan 1995-7-29 Butte 8 mi N of Forest Ranch, on Highway 32 950 Comment
  CHSC45726  Ceanothus integerrimus var. californicus Richard Steward 1988-4-25 9 Butte Ca. 6 mi n, 1.8 mi nw of Paradise. 640 Comment
  CAS-BOT-BC51149  Ceanothus lemmonii Lowell Ahart 1987-5-11 5619 Butte South of the Forbestown Ditch, about 2 1/2 miles North-East of Forbestown 868 Comment
  CDA13233  Ceanothus lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13080 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC28969  Ceanothus lemmonii J. D. Jokerst; M. S. Taylor 1980-11-14 441 Butte Common along sides of Lumpkin Rd, ca 200 m N of its jct with MacCabes Cr. Comment
  CHSC42001  Ceanothus lemmonii Lowell Ahart 1973-4-15 202 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  RSA512836  Ceanothus lemmonii J. T. Howell 1962-6-15 37446 Butte Serpentine area, Magalia 732 Comment
  CAS-BOT-BC52004  Ceanothus prostratus E. B. Copeland 1930-3-29 s.n. Butte De Sabla 800 Comment
  CHSC48835  Ceanothus prostratus Vernon Oswald 1984-4-16 1157 Butte Doon Campground on the Skyway, 1.0 mi e of Coutelenc Rd. at Lovelock. 853 Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  RSA32884  Ceanothus prostratus var. occidentalis A. A. Heller 1941-6-22 16179 Butte roadside bank, edge of the forest at Cohasset. Comment
  JEPS108984  Centaurea melitensis Lowell Ahart 2006-6-9 12659 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CHSC100515  Centaurium tenuiflorum Lowell Ahart 2008-11-4 15402 Butte On the sides of Potter Ravine, below the high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 242 Comment
  CHSC72248  Centromadia fitchii Lowell Ahart 1998-9-11 8060 Butte Along a wash, about 1/2 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  UC1594735  Centromadia fitchii Lowell Ahart 1992-9-9 6921 Butte about 0.5 mi se Kunkle Reservoir (Lake Oroville below the high water line); Lake Oroville 243 Comment
  SFV3982  Centromadia pungens M. L. Vincent 1960-9-8 53 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  JEPS46151  Cephalanthera austiniae Duncan Dunning 1922-7-18 Butte n. Pulga (Flea Valley); Flea Valley Comment
  CAS-BOT-BC222894  Cephalanthus occidentalis A. A. Heller 1914-7-14 11574 Butte Canon [Canyon] of Big Chico Creek. On streams bordering the Sacramento Valley Comment
  CHSC118501  Cerastium glomeratum L. P. Janeway 2016-5-9 11954 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC71171  Cerastium glomeratum Lowell Ahart 1998-5-30 7962 Butte About 200 yards northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, about 7 miles (air) north of Oroville. 403 Comment
  CHSC50829  Ceratophyllum demersum Vernon Oswald 1990-7-28 4405 Butte De Sabla Lake, near the Skyway between Magalia and Stirling City. 801 Comment
  SBBG17426  Cercis occidentalis B. Fuller 1961-4-1 Butte Butte Crk Cyn, Honeyrun Rd below Paradise Comment
  CAS-BOT-BC137002  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Res., about 2 miles south of Paradise 550 Comment
  CHSC37621  Cercocarpus betuloides var. betuloides T. B. Devine 1979-7-8 584 Butte Along Hwy 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC78097  Cercocarpus betuloides var. betuloides Megan Lee Hudzik 1998-4-21 26 Butte 1 mile n of Cohasset on the side of Cohasset Road. 914 Comment
  CHSC40473  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1985-5-15 4968 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC34226  Chamaebatia foliolosa M. S. Taylor 1981-5-7 3630 Butte N side of Ponderosa Way, 0.5 mi n of Sucker Creek bridge, ca. 4 air mi sw of Feather Falls. 365 Comment
  JEPS83926  Chamaesyce hooveri R. D. Stone and R. E. Buck 1987-8-4 832 Butte 0.4 mi wsw intersection of Hwy 99 and Cana Hwy; Vina Plains 56 Comment
  CHSC113145  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. 299 Comment
  CHSC113196  Chamaesyce maculata Lowell Ahart 2013-11-29 19290 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC27940  Chamaesyce maculata M. S. Taylor 1978-7-18 1704 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte Co and Tehama Co line. 2158 Comment
  CHSC34126  Chamaesyce maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  JEPS29838  Chamaesyce ocellata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8582 Butte 200 ft e junction of Paradise Rd and rd to Centerville 60 Comment
  JEPS94634  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte about 7 air mi n Oroville (near a small wash, about 1/4 mi w of the cow chute on w side of Cherokee Road); North Table Mountain 388 Comment
  UC176082  Chamaesyce ocellata subsp. ocellata A. A. Heller 1913-9-16 11140 Butte e Chico (hills near Big Chico Creek) Comment
  CHSC102252  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-9-13 16404 -A Butte On the bottom of a large wash, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcutt, about 12 miles (air) south of Oroville. 30 Comment
  CHSC33632  Chamaesyce serpillifolia subsp. serpillifolia R. E. Preston; R. A. Schlising 1981-7-21 30 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  CHSC97327  Chamaesyce serpillifolia subsp. serpillifolia L. P. Janeway 2007-7-11 9114 Butte Northern High Sierra Nevada. Plumas National Forest; along the northern shoulder of Oroville-'Quincy Hwy 160 m southwest of 4-Mile Ridge Road. Occasionally common along road shoulder. 1006 Comment
  JEPS115729  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-15 16285 Butte In a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  CAS-BOT-BC165954  Chamerion angustifolium E. B. Copeland 1930-7-21 428 Butte Jonesville 1600 Comment
  SEINET10470286  Cheilanthes covillei Lowell Ahart 1983-5-28 Ahart 4024 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-BC69442  Cheilanthes gracillima M. S. Taylor; K. Tharp 1983-3-11 5223 Butte Big Bald Rock, ca. 3 mi. s. of Brush Creek, ne. of Oroville. 975 Comment
  CAS-BOT-BC69443  Cheilanthes gracillima Lowell Ahart 1987-5-22 5677 Butte N. of Lumpkin Ridge Road, about 1.5 mi. e. of Camp 18, about 8 mi. ne. of Feather Falls. 1280 Comment
  CHSC78230  Cheilanthes gracillima Lowell Ahart 2000-6-27 8518 Butte Around large granite rocks, Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC62025  Chenopodium atrovirens Vernon H. Oswald 1989-8-9 3931 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.5 mi sw of Humboldt Rd, ca. 1.3 mi (air) sw of Butte Meadows. 1295 Comment
  CHSC110401  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18475 Butte On the east side of the parth, north of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC2255  Chlorogalum pomeridianum M. Underhill 1952-7-7 Butte 609 Comment
  JEPS114776  Chondrilla juncea Lowell Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the waterfall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 482 Comment
  CAS-BOT-BC252672  Chorizanthe membranacea Lowell Ahart 1980-7-20 2469 Butte Near the Suspension Bridge, Oroville 330 Comment
  POM193562  Chorizanthe membranacea C. C. Bruce 1896-05 155 Butte Iron Canyon Comment
  CAS-BOT-BC252834  Chorizanthe polygonoides var. polygonoides A. A. Heller 1939-4-26 15382 Butte Along the Neal Road just above the Spring House west of Paradise Comment
  SEINET10473689  Chrysanthemum leucanthemum Mary Susan Taylor 1982-8-16 Taylor 4993 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
  CHSC30351  Cicendia quadrangularis J. D. Jokerst 1980-4-17 599 Butte Top of North Table Mt. Along the edges of vernal pools above and below the high water mark. 419 Comment
  SEINET10454840  Cicendia quadrangularis Mary Susan Taylor 1978-4-14 Taylor 1564 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
  CAS-BOT-BC279860  Cichorium intybus A. A. Heller 1914-7-11 11559 Butte Near Chico Comment
  CHSC47051  Circaea alpina subsp. pacifica R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4650 Butte NE part of county on Snow Mountain ridge. At roadside. 1950 Comment
  SEINET10453137  Circaea alpina subsp. pacifica Mary Susan Taylor 1978-7-21 Taylor 1817 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC288037  Cirsium occidentale var. venustum Lowell Ahart 1980-6-19 2388 Butte Along Swedes Flat Road near Bangor, Sierra Nevada 320 Comment
  JEPS115722  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CAS-BOT-BC228747  Cistanthe umbellata J. B. Copeland 1930-7-9 413 Butte Jonesville 1500 Comment
  CHSC103681  Clarkia arcuata Lowell Ahart 2010-4-30 16590 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
  CHSC1094  Clarkia arcuata R. Carter 1964-5-1 74 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 1/4 mi. W of road. 60 Comment
  CHSC3521  Clarkia arcuata John Francis 1966-4-16 118 Butte On hillside S. of covered bridge (Honey Run). Comment
  UC725467  Clarkia arcuata A. A. Heller 1938-4-17 15041 a Butte e Chico (back of the Salmon Hole on creek); Chico Creek Comment
  SEINET10453143  Clarkia arcuata Mary Susan Taylor 1980-4-18 Taylor 2527 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  UCD104349  Clarkia biloba subsp. brandegeeae Joseph M. DiTomaso 1976-5-23 472 Butte Lake Oroville, peninsula at south end. 274 Comment
  SEINET10453145  Clarkia biloba subsp. brandegeeae Lowell Ahart, Peter Ahart 1982-6-26 Ahart 4142 Butte T20N R5E nw/nw sec 15. Along Ponderosa Way (Big Ridge Rd), just a little s of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 Comment
  CAS-BOT-BC164135  Clarkia concinna L. P. Janeway 1993-6-16 4390 Butte Upper east-facing slopes of North Fork Feather River Canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap 670 Comment
  CHSC1101  Clarkia gracilis subsp. albicaulis V. Holt 1942-6-1 Butte Forest Ranch. 548 Comment
  CHSC84018  Clarkia gracilis subsp. albicaulis Lowell Ahart 2003-6-22 10297 Butte In a native plant garden at the Durham Elementary School, Durham, about 5 miles south of Chico. 47 Comment
  CHSC88644  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-18 352 Butte Plumas National Forest. Mill Creek Cal Trans Station. 426 Comment
  CAS-BOT-BC171883  Clarkia gracilis subsp. gracilis Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD104578  Clarkia mildrediae B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca. 4.5 road miles NE of Brush Creek, ca. 0.2 mile SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Highway ca 0.6-0.7 mile S of its junction with USFS Road 23N60. 990 Comment
  SEINET10453156  Clarkia mildrediae Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4176 Butte T22N R4E nw sec 15. Along road, se of Concow Reservoir, ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC1105  Clarkia mildrediae subsp. mildrediae R. Carter 1964-6-15 124 Butte Feather River Canyon along S side Hwy. 40 on W side of tunnel, Arch Rock. 609 Comment
  CAS-BOT-BC163357  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 786 Comment
  CHSC46134  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte In the cutbank at the little building at the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC64115  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi northeast of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls. 914 Comment
  CHSC89907  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-10 Butte Northern Sierra Nevada Foothills. On the northeast side of Ponderosa Reservoir, extending from the boat launch, along the road leading down to Ponderosa Reservoir, and up the road leading over to the Forbestown Powerhouse. 304 Comment
  LA91997  Clarkia mosquinii T. Mosquin; 1959-7-2 3336 Butte 0.2 mi W of Enterprise, along highway Comment
  UC107844  Clarkia purpurea subsp. purpurea H. E. Brown Mar 3 1897-Mar 23 1897 212 Butte near Clear Creek 53 Comment
  UC569733  Clarkia purpurea subsp. quadrivulnera F. W. Embree 1934-4-24 43 Butte 4 1/2 mi n and 1 1/2 mi e Biggs; Marysville Quadrangle 38 Comment
  CAS-BOT-BC164783  Clarkia rhomboidea Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  CHSC76950  Clarkia rhomboidea Ida Ryan 1893-5-1 Butte Little Chico. Comment
  CHSC93157  Clarkia rhomboidea L. P. Janeway; Gail Kuenster, Perrie Cobb, Justine Biddison 1993-5-25 4355 Butte Northern Sierra Nevada Foothills. 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. South-facing bank on outside curve of the road. 381 Comment
  JEPS115573  Clarkia rhomboidea Lowell Ahart 2009-5-23 15768 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA144792  Clarkia rhomboidea G. I. Stage, R. Thorp 1959-6-21 59 -121 Butte 11.9 miles northwest of Chico on Highway 32 Comment
  RSA0059954  Clarkia unguiculata L. Ahart 2010-6-1 16759 Butte North side of the Guardian s Trail, about 1 mile east of the power lines, Upper Bidwell Park, about 3 air miles east of Chico. 181 Comment
  SEINET10453172  Clarkia unguiculata Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4170 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
  CHSC56063  Claytonia palustris L. P. Janeway 1988-6-16 2813 Butte Along Butte Creek, 1.4 mi south of Humboldt Road via the road in the west side of the canyon. 1264 Comment
  CHSC92572  Claytonia perfoliata subsp. perfoliata L. P. Janeway 2005-3-1 8342 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10572737  Claytonia rubra Mary Susan Taylor 1982-6-24 Taylor 4741 A Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CHSC23140  Clematis lasiantha M. S. Taylor 1976-2-25 1004 Butte Ca. 10 ft n of Hwy 32, ca. 15 mi e of Chico. Comment
  CDA36307  Clematis lasiantha J. R. Keck Jr. 1978-5-23 s.n. Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CHSC84380  Clematis ligusticifolia L. Ahart; P. Ahart 1983-7-24 4215 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. 450 Comment
  CHSC1733  Collinsia heterophylla R. M. Staley 1952-7-15 Butte Honey Run. 106 Comment
  JEPS117138  Collinsia heterophylla Lowell Ahart 2010-5-7 16627 Butte On both sides of the Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeat of Chico 238 Comment
  SEINET12332664  Collinsia heterophylla L. J. Edson 1988-1 8 Butte vic. Chico Municipal Golf Course, ca 3 mi NE of Chico 91 Comment
  UC103369  Collinsia parviflora Mrs. R. M. Austin May 1896 258 Butte Little Chico Creek Comment
  CHSC38686  Collinsia sparsiflora var. collina Vernon Oswald 1983-3-19 193 Butte Upper Bidwell Park, Chico, 300 ft. n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  SBBG17300  Collinsia sparsiflora var. sparsiflora M. Vincent 1962-4-16 196 Butte Honey Run Rd, ca. 0.5 mi W of Paradise, in Butte Crk Cyn Comment
  CHSC39316  Collinsia tinctoria Lowell Ahart 1983-6-26 4106 Butte Along Ponderosa Way. About 1/8 miles east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. (Note: the sign gives Big Ridge Road instead of Ponderosa Way.) 500 Comment
  CHSC44775  Collinsia tinctoria R. Banchero 1980-6-5 186 Butte At the jct of Hwy 70 and Pinkston Canyon Rd, ca 6.4 mi SW of the jct of the Feather River and Hwy 70. 633 Comment
  CHSC71192  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte About 1/4 miles north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  CHSC26171  Collomia heterophylla J. P. Kroessig 1977-6-14 39 Butte Ca 8 km n and w on dirt road at n end of Concow Road, ca 13 km ne of Paradise. 1100 Comment
  CHSC34993  Collomia heterophylla R. Schlising; R. Banchero 1980-6-6 3650 Butte N of Lake Oroville on Bald Rock Road, 0.8 mi S of jct with Oroville-Quincy Highway at Brush Creek. 1024 Comment
  CHSC34994  Collomia heterophylla R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3772 Butte 2.2 mi N of La Porte Road (= 1.2 mi S of S end of Sly Creek Reservoir dam), at Strawberry Valley Creek. Roadside. 1059 Comment
  CHSC39679  Collomia heterophylla Lowell Ahart 1983-6-21 4070 Butte On the road cut along Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  RSA4470  Collomia linearis E. B. Copeland 678 Butte Jonesville. Comment
  CHSC81505  Colutea arborescens Sabrina Wright 2000-4-15 Butte Chico. Bidwell Park. Along the driving circle, near bridge. 60 Comment
  CHSC39926  Comandra umbellata subsp. californica M. S. Taylor; V. Oswald 1984-4-4 5373 Butte Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC1952  Conium maculatum A. Goekler 1929-5-21 Butte Chico. 57 Comment
  CHSC115432  Convolvulus arvensis Ariana Gehrig 2013-5-7 Butte City of Chico. Along pathway, near campus. 64 Comment
  UC1509595  Cordylanthus pilosus subsp. pilosus L. Ahart 1983-8-16 4279 Butte 3 mi sw Butte Meadows (near Humboldt Rd) 1450 Comment
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Jun 5 2008
  CHSC42728  Cornus glabrata Lowell Ahart 1987-4-30 5486 Butte On the banks of North Honcut Creek, aobut 2 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 67 Comment
  POM77773  Cornus nuttallii C. C. Bruce 1898-05 s.n. Butte Forest Ranch Comment
  CAS-BOT-BC210519  Cornus sessilis C. R. Quick 1943-7-26 43 -20 Butte Big Bar Mt. near Fagan's Saddle, Plumas Nat. Forest Comment
  CHSC47976  Corylus cornuta var. californica Vernon Oswald 1987-6-29 3041 Butte Bald Mt., 1.1 mi (odometer) sw of the Lookout. 1645 Comment
  UC1586403  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam. 213 Comment
  UC1586404  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam 213 Comment
  CAS-BOT-BC427630  Crassula aquatica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC46741  Crassula saginoides Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31654  Crassula tillaea L. Ahart 1973-3-16 176 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90954  Crassula tillaea Lowell Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC1212530  Crepis occidentalis subsp. conjuncta H. F. Copeland 1932-7-24 Butte near Butte Creek meadow; Lassen National Forest, vicinity of Jonesville Comment
  CHSC33291  Croton setiger S. Posner 1972-9-24 2 Butte Edge of Skyway between Hwy. 99 and Humbug Rd. Comment
  CHSC30722  Crucianella angustifolia M. S. Taylor 1980-5-27 2726 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 Comment
  CHSC41357  Crucianella angustifolia R. A. Schlising; J. D. Jokerst 1980-7-2 3816 Butte NW of De Sabla, 0.75 miles SW of crossing of Butte Creek. 658 Comment
  CHSC113521  Cryptantha affinis Lowell Ahart 2014-7-7 19601 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC33258  Cryptantha affinis R. A. Schlising; R. Banchero 1980-6-17 3729 Butte N of Magalia and De Sabla, along Skyway, ca. 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  CHSC86138  Cryptantha affinis John Dittes; Josephine Guardino 2002-6-21 617 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
  CHSC97409  Cryptantha affinis Robert Fischer 2006-6-17 1028 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road near Cherry Hill. 1493 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  UC1594718  Cryptantha affinis Lowell Ahart 1992-7-29 6871 Butte about 0.75 mi nw Lotts Lake (about 1 mi ne of Carr Mine) 1798 Comment
  JEPS98573  Cryptantha flaccida Lowell Ahart 2000-6-6 8452 Butte 5 mi (air) E of Oroville Dam (bottom of old gold mining pit, E of where dirt road crosses Oregon Gulch creek, 1/4 mi NE of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC33418  Cryptantha intermedia R. A. Schlising; J. D. Jokerst 1980-7-2 3821 Butte 1.4 miles S of Nimshew junction of the Centerville and Nimshew Roads. Along Centerville Road. Comment
  RSA32911  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  POM264772  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC39538  Cryptantha simulans Lowell Ahart 1983-5-28 4020 Butte On both sides of the trail to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CAS-BOT-BC68066  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City 1676 Comment
  UC600567  Cryptogramma acrostichoides H. F. Copeland 1932-7-24 Butte Jonesville, Butte Creek drainage Jonesville Comment
  CHSC23370  Cupressus macnabiana Robert Schlising 1974-5-19 3130 Butte Just N of Magalia, on Coutelenc Road above the Magalia Reservoir. Comment
  CHSC3601  Cupressus macnabiana Gerry Carrauthers 1966-3-6 44 Butte Ca. 1/4 mi N.E. of Magalia (city) train depot on Cautolenc Road. N. of city of Paradise. Comment
  JEPS94436  Cupressus macnabiana Lowell Ahart 1997-9-6 7884 Butte about 2 air mi ne of Concow Reservoir (at the McNab Cypress grove, near the steel tower power line, along sides of a logging road about 1/4 mi w of Rim Road); McNab Cypress grove 731 Comment
  SEINET10531457  Cupressus macnabiana Mary Susan Taylor 1981-4-8 Taylor 3503 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET10834037  Cupressus macnabiana Mary Susan Taylor 1980-2-17 Taylor 2317 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
  CHSC55055  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  UC1476882  Cuscuta howelliana Lowell Ahart 1979-10-7 Butte Honcut Honcut Quad. (Peter Ahart Ranch) 35 Comment
  CHSC48366  Cuscuta indecora var. indecora V. Oswald 1988-6-8 3364 Butte Fernandez Grant. West side of the access road in the Oroville Wildlife Area 0.3 mi s of the Vance Ave. entrance. 32 Comment
  CHSC113052  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of a large wash, about 1/2 mile southeast of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  RSA0118626  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC88575  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
  RSA754876  Cynodon dactylon L. Ahart 2009-6-19 15932 Butte West of the trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 204 Comment
  UC1131376  Cynodon dactylon H. S. Yates 1936-8-14 6119 Butte 10 mi s Durham; Chico Quad. Comment
  CHSC92558  Cynoglossum grande L. P. Janeway 2005-4-25 8367 Butte Northern High Sierra Nevada. Plumas National Forest; upper slope of side drainage of Flea Valley Creek 180 m northeast of junction of Concow Road and Rim Road (Ponderosa Way). 951 Comment
  SBBG17178  Cynoglossum grande M. Vincent 1961-3-30 23 Butte Honey Run Rd, 0.5 mi W of Paradise 609 Comment
  JEPS113689  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC30503  Cyperus difformis J. D. Jokerst; M. S. Taylor 1979-11-1 634 Butte Field north of Goodspeed-Watt Road, 0.1 mi N of its jct with Nelson, ca 6.0 mi S of Chico. Comment
  CHSC38899  Cyperus difformis Vernon Oswald 1983-7-8 839 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel n of the flood-control gates. 79 Comment
  CHSC79593  Cyperus difformis G. Douglas Barbe 1978-9-25 2434 Butte Butte Basin. Check levees, Biggs Rice Experiment Station. Comment
  SEINET9781676 Image available Cyperus difformis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  UC980096  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station Comment
  CHSC45752  Cyperus eragrostis L. P. Janeway 1987-6-13 2190 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  JEPS120107  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 -A Butte Lawn on the south side of the path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC114381  Cyperus erythrorhizos Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37103  Cyperus erythrorhizos L. Ahart 1982-9-12 3795 Butte On banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  CHSC34317  Cyperus flavescens L. Ahart 1981-9-6 3123 Butte In the rd gutter across the rd from the rest area just a little s of the Arch Rock tunnel on Hwy 70, ca. 4 mi n of Pulga. 500 Comment
  CHSC94783  Cyperus flavescens Lowell Ahart 2006-10-8 13439 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  JEPS97341  Cyperus flavescens Lowell Ahart 1995-8-19 7618 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC100229  Cyperus fuscus John Dittes 2003-10-8 850 Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC78487  Cyperus iria Vernon H. Oswald 2000-8-12 9949 Butte South end of the large dredge pond in the Oroville Wildlife Area on the west side of the Feather River between Palm Avenue and Vance Avenue. 28 Comment
  SEINET12875381 Image available Cyperus iria Lowell Ahart 2012-1 18415 Butte 31 Comment
  JEPS113671  Cyperus niger Lowell Ahart 2007-8-19 14487 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  UC1100646  Cyperus niger Herbert L. Mason and Verne Grant 1946-9-27 13141 Butte 3 mi. w. Biggs Comment
  CHSC76406  Cyperus squarrosus Lowell Ahart; Vernon H. Oswald 1999-10-3 8285 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
  SEINET7582970 Image available Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  JEPS93861  Cyperus strigosus Lowell Ahart 1998-7-18 8040 Butte about 7 air mi n of Oroville (w of the Ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  UCSB63781  Cyperus strigosus Ahart, Lowell 1998-7-18 Butte T20N, R4E, northeast 1/4 Section 17; West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 396 Comment
  RSA739871  Cystopteris fragilis L. P. Janeway 2008-8-10 9538 Butte Northern High Sierra Nevada, along Four Tree Road at crossing of S Branch Mill Creek, 4.5 road km ESE of Hwy 70. 823 Comment
  HSC66217  Cystopteris fragilis M. S. Taylor 1979-5-4 1988 Butte Millsap Bar Campground, 9 mi. NE of jct. of Millsap Bar Rd. with Brush Cr. Rd., 26 mi. NE of Oroville 1006 Comment
  RSA692783  Cystopteris fragilis M. M. Boney 1897-1 4215 Butte Unspecified Comment
  SEINET10535612  Cystopteris fragilis Mary Susan Taylor 1980-4-18 Taylor 2519 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC110336  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. 632 Comment
  JEPS120533  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National Forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. Comment
  UCR47346  Damasonium californicum C. B. Wolf 1937-5-14 08672 Butte Sacramento Valley, 5 mi NW of Chico on [Hwy 32; Nord Ave.] Hamilton City Rd 46 Comment
  CAS-BOT-BC189852  Danthonia californica Lowell Ahart 1983-6-21 4093 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1.25 mile west of the Oroville Quincy Highway, ca. 15 miles northeast of Oroville. 450 Comment
  CHSC43128  Danthonia californica var. americana Robert Banchero 1981-7-19 610 Butte Ca 0.6 mi e of Balt Mt look-out tower, on Keyser Creek. 1682 Comment
  CHSC74039  Danthonia californica var. americana B. Castro 1998-7-8 802 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. 929 Comment
  UCSB34189  Danthonia unispicata Reisentz, Paul 1979-5-13 Butte 4 mi E on Cherokee Rd from Hwy 70 Comment
  CHSC23704  Darmera peltata M. S. Taylor 1976-5-5 1119 Butte Along Bear Creek, ca. 1/4 mi s of Hwy 70, by the waterfall, ca. 30 mi ne of Oroville. Comment
  SEINET10546586  Datura meteloides Mary Susan Taylor 1974-10-11 Taylor 329 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CAS-BOT-BC8793  Delphinium gracilentum Lowell Ahart 1980-4-30 2127 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC8795  Delphinium gracilentum Lowell Ahart 1980-4-7 2070 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CAS-BOT-BC8570  Delphinium hansenii John Thomas Howell 1962-6-16 37602 Butte Feather River West Branch, southwest of Nelson Bar 304 Comment
  UC246732  Delphinium hansenii subsp. hansenii Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2076 Butte near Chico Comment
  CHSC1446  Delphinium hesperium H. Holder 1949-5-18 Butte Bidwell Park. 91 Comment
  CHSC31843  Delphinium hesperium L. Ahart 1978-5-24 1743 Butte Near North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET7081597  Delphinium nudicaule A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run and east of Paradise. Coordinate Datum: NAD27. UTM Zone 10, 615564mE, 4400438mN. Comment
  CHSC51902  Delphinium patens subsp. patens B. M. Bounous 1987-4-1 11 Butte N end of Table Mtn, ca 6 mi N of Oroville, ca 100 yds W of Cherokee-Table Mtn Rd. 335 Comment
  CHSC56776  Delphinium patens subsp. patens J. D. Jokerst; Lowell Ahart, M. S. Taylor 1980-4-7 567 Butte Edge of Swedes Flat Road, 0.8 mi east of its junction with Oroville-Bangor Hwy, ca 10 mi southeast of Oroville. Comment
  CHSC61214  Delphinium patens subsp. patens Vernon H. Oswald; Lowell Ahart 1993-3-24 5236 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CAS-BOT-BC121620  Delphinium patens subsp. patens Frances Brown 1935-5-1 s.n. Butte Hills near Durham Comment
  CHSC52502  Delphinium variegatum Tom R. Norton 1977-4-24 22 Butte Ca. 9.4 mi nw of Chico, 1.8 mi e of Hwy. 99, 10 yds e of Cana-Pine Creek Rd. Field. 60 Comment
  CHSC53170  Delphinium variegatum M. Johnson 1977-4-26 16 Butte Ca. 50 ft. s of Skyway Dr., ca. 6 mi e of Chico. 457 Comment
  CHSC53297  Delphinium variegatum R. O. Gilpatrick 1970-3-20 19 Butte Found 1 mile S. on Bruce Rd. from intersection of Humboldt Rd., Chico. N.W. side of road. Comment
  CHSC3879  Delphinium variegatum subsp. variegatum Gary Dutton 1966-4-14 212 Butte Found in Upper Bidwell Park at Gun and Rod Club. Comment
  CHSC93352  Delphinium variegatum subsp. variegatum Lowell Ahart 2006-5-3 12568 Butte Along a small stream, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 386 Comment
  CAS-BOT-BC82878  Dendromecon rigida John Thomas Howell 1962-6-15 37443 Butte Sierra Nevada. Magalia. 731 Comment
  CHSC43133  Deschampsia cespitosa Robert Banchero 1981-7-18 596 Butte Butte Creek House, ca 3 air mi ne of Jonesville. Meadow. 1755 Comment
  CHSC64255  Deschampsia cespitosa S. C. Morey 1983-8-2 675 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UCD61116  Deschampsia cespitosa H. S. Yates 1936-8-13 6110 Butte 2 1/2 miles SSE of Butte Meadow. 1493 Comment
  SEINET10515767  Deschampsia cespitosa Edwin B. Copel 1931-7-15 Copeland 605 Butte Border of the "Lily Pond," a permanent pool, warm in summer; associated with Carex spp. Comment
  UCD80539  Deschampsia danthonioides CNPS SN Foothill Team 2005-4-12 SNFN 0077 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  CAS-BOT-BC201740  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek Comment
  CHSC31710  Deschampsia elongata L. Ahart 1977-6-16 1424 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC94288  Deschampsia elongata Lowell Ahart 2006-7-16 12996 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1515 Comment
  UC589924  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte 2 1/2 mi. s.e. Butte Meadow; Paynes Creek Quad. 1493 Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CHSC47611  Desmazeria rigida Lowell Ahart 1982-5-3 3406 Butte Along the sides of a wash, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC24137  Dicentra formosa D. E. Hale 1976-4-20 13 Butte On n margin of Paradise Reservoir. Slope above Reservoir. 609 Comment
  CHSC3301  Dicentra formosa M. L. Hillier 1966-4-23 Butte Side of rd. Approx. 4 miles e. of Stirling City. Comment
  UC1362263  Dicentra formosa Kingsley R. Stern 1965-4-25 2169 Butte ca 2.9 mi e (upstream) Poe Power Dam (bank of small creek flowing into n fork of Feather River); Feather River Comment
  CAS-BOT-BC500061  Dichelostemma capitatum Saichi Kawahara 1968-5-4 387 Butte N. Oak Woodland, James Ripley's property's property, Graham Road, Paradise. 640 Comment
  SEINET12046113  Dichelostemma capitatum K. E. Warwick 1978-1 3 Butte ca 50 m N of Humbolt Rd, 1 km E of intersection of Humbolt Rd & Bruce Rd, ca 3 km E of Chico Comment
  CHSC28905  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1980-3-1 2332 Butte West end of county dump on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  CHSC79869  Dichelostemma capitatum subsp. capitatum Leanna Brown 1999-3-9 20 Butte Canyon Rim Pl. Rd. and Skyway. 130 Comment
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  CHSC109154  Dichelostemma congestum Lowell Ahart 2012-5-12 18029 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico 237 Comment
  CHSC51937  Dichelostemma multiflorum L. P. Janeway 1987-6-5 2148 Butte Along the Peavine Cr rd 1.1 mi E of its beginning at the rd along French Cr. 693 Comment
  CHSC93881  Dichelostemma multiflorum L. P. Janeway 2006-5-28 8636 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 856 Comment
  UC843594  Dichelostemma multiflorum Lewis S. Rose 1937-6-10 37353 Butte Hurleton 579 Comment
  CAS-BOT-BC501077  Dichelostemma multiflorum Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CAS-BOT-BC501093  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  SEINET12044751  Dichelostemma multiflorum J. H. Morrison 1932-1 s.n. Butte Durham Comment
  SEINET3885608  Dichelostemma multiflorum R. A. Vanbianchi 1974-4-20 215 Butte 300 yards south of the intersection of Pentz and Clark Rds.; 0 Comment
  CAS-BOT-BC502515  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  JEPS118007  Dichondra donelliana Lowell Ahart 2011-6-5 17367 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 42 Comment
  CHSC12959  Digitalis purpurea K. R. Stern 1974-6-30 5770 Butte 11.5 mi ne of Stirling City on Bald Mt. rd. 1219 Comment
  CHSC33903  Digitalis purpurea M. S. Taylor 1981-5-15 3742 Butte Both sides of rd 22N92 between its jct with 23N00.1 and West Branch French Creek, ca 1.5 air mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70. 883 Comment
  UCD123713  Digitalis purpurea M. S. Taylor 1982-8-16 5001 Butte at loop in road above Discovery Creek. ca. 1 mile north of Bald Mt., ca. 4 miles northeast of Stirling City. 1584 Comment
  CHSC40902  Digitaria sanguinalis Lowell Ahart 1985-11-7 5236 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC6615  Dioscorea M. MacArthur 1968-6-17 305 Butte Location: SE yard of Building U, on Chico State College campus. 60 Comment
  CHSC3011  Diospyros virginiana Carl Pejsa 1958-4-19 35 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC151924  Diplacus douglasii H. E. Brown 1897-4-15 198 Butte Near Clear Creek Comment
  SEINET8255118  Diplacus douglasii Lowell Ahart 1973-1 172 Butte Peter Aahrt Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 46 Comment
  CAS-BOT-BC150507  Diplacus grandiflorus Lewis S. Rose 1933-5-26 33186 Butte Feather River Canyon, 5 mi. E. of Oroville 152 Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 Comment
  SEINET13700565  Diplacus kelloggii M. J. Williams 1967-4-22 s.n. Butte Road from Oroville to Feather Falls. 244 Comment
  CAS-BOT-BC153212  Diplacus kelloggii Lowell Ahart 1988-3-27 5944 Butte Along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap 426 Comment
  CAS-BOT-BC154035  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte West slope of the Sierra near Forest Ranch 822 Comment
  CHSC34720  Diplacus torreyi M. S. Taylor; R. Bacigalupi 1981-4-27 3555 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
  JEPS115054  Dittrichia graveolens Lowell Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito 71 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  RSA31870  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-3 15011 Butte Common in moist red clay soil derived from disintefrated lave, Table Mountain, near Cherokee. Comment
  CDA6255  Dopatrium junceum T. C. Fuller 1976-8-1 20163 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  UC1594616  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  CHSC75360  Downingia bicornuta Jennifer Slater 1997-4-27 34 Butte In the vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  RSA40449  Downingia bicornuta A. A. Heller 1940-5-13 15617 -A Butte 3 miles W of Chico on State Hwy 32. Comment
  UC1562498  Downingia bicornuta var. bicornuta Barbara Ertter with Lowell Ahart 1986-4-13 5902 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch) 30 Comment
  UC220573  Downingia bicornuta var. bicornuta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2083 Butte near Chico Comment
  CHSC87196  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  UCD80194  Downingia ornatissima CNPS SN Foothill Team 2005-4-13 SNFN 0120 Butte City of Chico, Chico Municipal Airport, 20 m N of fence across SE border of accessible area, about half the distance down paved road. 62 Comment
  SEINET10448471  Draba verna Lowell Ahart 1983-5-7 Ahart 3967 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  SEINET13709887  Draperia systyla Lowell William Ahart, Lowell William Ahart 2003-1 10376 Butte 17 Mi. NE of Oroville, 2.5 Mi. E of Brush Creek Work Ctr. (39 Deg 41'28.3"N, 121 Deg 17'29.3"W) 3400 Ft. 1036 Comment
  CHSC28723  Drosera rotundifolia M. Banchero; R. Schlising 1979-9-2 36 Butte Wet meadow sloping to Butte Creek, 8.1 mi NE jct H ... Field redacted by CHSC, contact the data manager for more information Comment
  UCD170791  Drosera rotundifolia Barry Rice 2016-6-30 BR- 160603 Butte Chico Meadows. 1280 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CHSC42012  Dryopteris arguta Lowell Ahart 1975-3-7 705 Butte About 1 mile west of the Forbestown Reservoir, north-east of Forbestown. 426 Comment
  CHSC99551  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  RSA712997  Dryopteris arguta L. Ahart 2006-5-19 12634 Butte On the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 406 Comment
  UCD80275  Dryopteris arguta CNPS SN Foothill Team 2005-3-30 SNFN 0070 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  SEINET10966176  Dryopteris arguta Mary Susan Taylor 1980-3-19 Taylor 2389 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC454  Dudleya cymosa M. Roberson 1962-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC113123  Dysphania botrys Lowell Ahart 2013-11-18 19273 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  JEPS124155  Dysphania botrys Lowell Ahart 2015-11-7 20617 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC28867  Echinochloa crus-galli J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 429 Butte Top of North Table Mt, ca 100 m n of the intersection of east edge of Mt and Cherokee Rd. Comment
  CDA14356  Echinochloa oryzicola B. Voorhees 1997-8-21 s.n. Butte Davit Dayton Ranch, south of Chico. 0 Comment
  CDA1999  Echinochloa oryzicola E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 854 Butte Biggs UC Field Station: north of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 miles E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. Comment
  SEINET4568167  Echinochloa oryzicola var. mutica B. Crampton 1963-9-9 6887 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station Comment
  CHSC30756  Eclipta prostrata M. S. Taylor 1980-9-26 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset, Chico. 30 Comment
  CHSC113216  Elatine Lowell Ahart 2014-4-26 19411 A Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC113290  Elatine californica Lowell Ahart 2014-4-9 19349 Butte Bottom of shallow duck pond, south of Rutherford Road, about 1/4 mile southeast of the headquarters of the Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 20 Comment
  CHSC45273  Elatine rubella Vernon H. Oswald 1988-12-13 3724 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CAS-BOT-BC113637  Eleocharis acicularis Herbert L. Mason; Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge. Comment
  UCD49694  Eleocharis acicularis var. acicularis L. Ahart 2000-10-21 8711 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  CAS-BOT-BC113641  Eleocharis acicularis var. acicularis Lowell Ahart 1980-9-8 2594 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC45168  Eleocharis bella Lowell Ahart 1984-5-7 4591 Butte Near Kunkle Creek and a new road, about 1/2 mile north of Kunkle Reservoir, about 2 mles south of Paradise. 548 Comment
  CHSC78287  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing 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
  CHSC79601  Eleocharis bolanderi G. F. Hrusa; T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 815 Comment
  CAS-BOT-BC113584  Eleocharis decumbens L. P. Janeway 1987-6-13 2217 Butte Meadow just NE of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  JEPS113682  Eleocharis engelmannii Lowell Ahart 2007-7-27 14395 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  CAS-BOT-BC113371  Eleocharis engelmannii Lowell Ahart 1987-5-10 5607 Butte 1/8 mi S of Central House Road, E of the Wester Pacific RR, ca. 1 1/2 N & 1 mi W of Honcut 30 Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC68439  Eleocharis macrostachya L. P. Janeway 1988-6-29 2907 Butte Spring where Crouch Ravine fades into Cool Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  SEINET13711140  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8481 Butte E of Pentz Magalia Rd. 2 Mi. S of ParadiSE (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  JEPS110328  Eleocharis montevidensis Lowell Ahart 2006-7-25 13060 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS110042  Eleocharis obtusa var. obtusa Lowell Ahart 2006-10-8 13436 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC33713  Eleocharis pachycarpa J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1336 Butte N of and adjacent to Hwy 162 opposite Lake Madrone. 600 Comment
  POM144806  Eleocharis palustris E. B. Copeland 1903-5-15 3182 Butte Chico Comment
  CHSC55615  Eleocharis parishii C. A. Janeway 1986-10-10 Butte Gravel bar on north side of Chico Creek, opposite 5-Mile Recreation Area. 79 Comment
  JEPS95995  Eleocharis parishii Lowell Ahart 1999-9-21 8277 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
  JEPS98442  Eleocharis quinqueflora Lowell Ahart 2000-5-27 8405 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  CHSC78927  Eleocharis radicans Lowell Ahart 2000-10-2 8698 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
  JEPS124328  Eleocharis radicans Lowell Ahart 2015-10-20 20567 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CDA38982  Eleocharis radicans L. Ahart 2000-9-2 8680 -A Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  SEINET10467320  Eleocharis rostellata Mary Susan Taylor Taylor 837 Butte Bidwell Park, Chico. Comment
  CAS-BOT-BC112031  Eleocharis suksdorfiana Herbert Faulkner Copeland 1929-6-10 1246 Butte Jonesville. 1524 Comment
  JEPS98520  Eleocharis suksdorfiana Lowell Ahart 2000-7-5 8552 Butte In a small meadow, about 100 yards west of the Skyway, about 1 mile south of Inskip, about 4 1/2 miles north of Stirling City. 1310 Comment
  UCD61273  Eleusine indica L. E. Hazeltine 1916-7-27 Butte Chico. Comment
  CHSC6150  Elymus caput-medusae E. Parreno 1968-5-10 90 Butte Entrance to Upper Bidwell Park on right side of Upper Bidwell Park Rd. and Wildwood Ave., Chico. 59 Comment
  SEINET10929812  Elymus caput-medusae Lowell Ahart 1972-5-8 Ahart 107 Butte Ca. 1/2 typical size. On rolling hills, dry soils. Peter Ahart Ranch, Honcut. Valley Grassland. 46 Comment
  CHSC117591  Elymus hispidus L. P. Janeway 2016-6-2 12101 Butte Northern High Sierra Nevada. Plumas National Forest; Field Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  JEPS113673  Elytrigia pontica subsp. pontica Lowell Ahart 2007-8-3 14404 Butte Waste area on the northwest side of Nelson Road, about 1/4 mile northeast of Seven Mile Lane, about 7 1/2 miles west of Nelson 29 Comment
  SD3258  Epilobium angustifolium E. B. Copeland 1930-7-21 Butte Jonesville 1600 Comment
  CHSC40590  Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte Near the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  SEINET6635801 Image available Epilobium brachycarpum Lowell Ahart 1985-10-12 5201 Butte end of Nelson Bar Road, ca. 1 mi S on Kunkle Reservoir, ca. 3 mi S of Paradise; near boat ramp 302 Comment
  CHSC117433  Epilobium campestre Lowell Ahart 2016-5-31 20906 Butte On the sides of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  RSA795699  Epilobium campestre L. Ahart 2012-6-5 18166 Butte On the strand of the reservoir, north of Beatson Hollow, about 1.75 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 air miles north of Oroville. 296 Comment
  CHSC30765  Epilobium canum subsp. latifolium M. S. Taylor 1980-9-27 3344 Butte S side of Hwy 70, at Butte-Plumas county line, on granite wall. 548 Comment
  CHSC32125  Epilobium canum subsp. latifolium L. Ahart 1975-9-4 970 Butte Along South Fork of Feather River ca. 0.5 mi n of Golden Trout Crossing. 762 Comment
  SEINET10453052  Epilobium canum subsp. latifolium Mary Susan Taylor 1979-10-13 Taylor 2249 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CHSC39978  Epilobium ciliatum subsp. ciliatum L. Ahart; P. Ahart 1983-7-24 4212 Butte At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Along edge of road. 450 Comment
  CHSC66672  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald; Lowell Ahart 1996-7-22 8078 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the edge of the farm road crossing a branch of Angel Slough W of Refuge Headquarters at the SE corner of Tract 1, Sanctuary I. 32 Comment
  CHSC70333  Epilobium ciliatum subsp. ciliatum R. A. Schlising; P. Broyles 1988-7-3 4562 Butte SE of Stirling City, past '5 Corners' at a small stream. Comment
  JEPS120599  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  JEPS120645  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC13710  Epilobium densiflorum M. S. Taylor 1974-10-11 333 Butte On sandbar in Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. Comment
  POM184018  Epilobium lactiflorum H. F. Copeland 1932-08 s.n. Butte Butte County: In Springs near Crest of ridge SE of the head of Butte Creek. 2000 Comment
  CHSC109228  Epilobium minutum Robert Fischer 2012-6-17 1060 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  CHSC35107  Epilobium pallidum R. A. Schlising; Ikeda, Jokerst, Taylor 1980-5-8 3590 Butte NE of Chico Airport and WSW of Richardson Springs; at vernal pool on Cohasset Ridge. 249 Comment
  CHSC38563  Epilobium pallidum Vernon Oswald 1983-5-25 554 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1200 ft e of Salmon Hole Parking Area. 182 Comment
  UC873167  Epilobium torreyi A. A. Heller 1914-5-11 11388 Butte 8 mi n Oroville (in a field below the Quercus Douglasii belt) Comment
  RSA684652A  Equisetum arvense Michael A. Vincent 1962-4-15 180 Butte 1 mile S of Stirling City on Skyway Comment
  UC426895 Image available Equisetum fontinale E. B. Copeland 1930-6-24 Butte sloping s toward Butte Creek 1510 Comment
  CHSC34163  Eragrostis cilianensis L. Ahart 1981-8-31 3063 Butte In a garden just a little n of the store in Honcut. 35 Comment
  CHSC51034  Eragrostis cilianensis Lowell Ahart 1990-8-15 6583 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
  UC204882  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 mi n Oroville Comment
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC278508  Eragrostis pilosa Lowell Ahart 1985-10-12 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  CHSC102717  Eremocarpus setiger Lowell Ahart 2009-7-3 15986 -A Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC168362  Eremogone ferrisiae Lowell Ahart 1980-5-29 2362 Butte 2 1/2 miles north-east of Mountain House 1100 Comment
  CAS-BOT-BC131514  Ericameria arborescens Lowell Ahart 1986-10-16 5399 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  OBI5721  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Neighborhood of Jonesville; summit of Humboldt rd 2134 Comment
  POM57253  Ericameria linearifolia A. A. Heller, H. E. Brown 1902-5-16 5558 Butte Marysville Buttes (rocky slope of East Butte) Comment
  UC1609003  Ericameria nauseosa var. speciosa Lowell Ahart 1993-9-8 7169 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  CHSC72743  Erigeron canadensis Lowell Ahart 1998-11-11 8063 Butte About 3/8 mile northwest of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC11840  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Jonesville. 1550 Comment
  CHSC33714  Erigeron inornatus var. inornatus J. D. Jokerst; R. A. Schlising, B. Banchero 1981-6-13 1338 Butte Road to Milsap Bar on the Middle Fork of the Feather River 1.7 mi below it's junction with the road to Big Bald Rock. Alongside road. Comment
  SD5417  Erigeron miser E. B. Copeland 1930-8-6 Butte Jonesville 1550 Comment
  CHSC3515  Erigeron philadelphicus John Francis 1966-4-6 105 Butte 1.5 miles E. of covered bridge (Honey Run). Beside road. Comment
  CHSC42392  Erigeron philadelphicus Lowell Ahart 1987-6-9 5741 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC54091  Erigeron philadelphicus Vernon H. Oswald; Lowell Ahart 1991-5-13 4586 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  JEPS106154  Eriochloa acuminata var. acuminata Lowell Ahart 2004-9-14 11400 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  JEPS124284  Eriochloa acuminata var. acuminata Lowell Ahart 2015-11-18 20651 Butte East intersection of Spruce Street and Washington Street, Gridley. Comment
  CHSC29787  Eriogonum lobbii M. S. Taylor; R. S. Schlising, J. D. Jokerst 1980-6-14 2872 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CHSC39079  Eriogonum marifolium var. marifolium R. A. Schlising 1981-6-20 4098 Butte E of Inskip and E of Jones Meadow. 1767 Comment
  CHSC34041  Eriogonum nudum var. oblongifolium L. Ahart 1981-7-7 2930 Butte Along the edge of the dirt rd ca. 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 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
  SEINET10479531  Eriogonum nudum var. oblongifolium Mary Susan Taylor 1975-9-19 Taylor 916 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC39139  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-6-23 4304 Butte N of Concow area and SE of Stirling City; on roadside bank. 914 Comment
  UC1032186  Eriogonum nudum var. pubiflorum P. L. Johannsen 1936-7-17 935 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC725365  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 15839 Butte w Pentz (roadside bank) Comment
  CHSC45489  Eriogonum roseum Lowell Ahart 1977-10-19 1603 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  UC478525  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  CHSC51893  Eriogonum umbellatum var. ahartii L. P. Janeway 1988-7-2 2966 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  CAS-BOT-BC265214  Eriogonum umbellatum var. speciosum John Thomas Howell 1951-6-26 27524 Butte Near Pulga, Sierra Nevada 417 Comment
  CAS-BOT-BC262209  Eriogonum ursinum A. A. Heller 1914-8-7 11666 Butte Summit east and back of Jonesville 2133 Comment
  CHSC94347  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the 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-BC308147  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 4997 Butte 1/8 mile east of the dirt road 1 1/2 miles north-east of Concow Res. 800 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
  UC179658  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte near Butte Meadows; Little Summit Comment
  RSA92670  Eriophyllum lanatum var. grandiflorum F. W. Peirson 1926-6-21 6766 Butte About 10 miles east of Chico on Humboldt Road Comment
  SEINET10475232  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-5-27 Taylor 2723 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC19933  Erodium brachycarpum M. S. Taylor 1975-2-16 374 Butte Abundant ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC100985  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 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
  UC856289  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte near Cohasset; Sierra foothills Comment
  CHSC28134  Erythranthe bicolor J. D. Jokerst 1979-5-7 221 Butte On top of Cohasset Ridge. 463 Comment
  SEINET8410797  Erythranthe bicolor A. A. Heller 1915-5-28 11905 Butte Cohasset; near the upper limit of the digger pine in teh Sierra foothills. 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
  CHSC46299  Erythranthe floribunda Vernon Oswald 1989-5-31 3793 Butte Wurlitzer Unit, Vina Plains Preserve. Locally abundant in moist soil along the bottom of the s bank of Pine Creek near the e end of the Unit. 56 Comment
  CAS-BOT-BC153864  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC105167  Erythranthe glaucescens Christopher T. Ivey 2007-4-22 368 Butte Humboldt Rd, between Hwy 32 and town of Butte Meadows, along N side of road in gravelly bank. 1219 Comment
  CHSC20495  Erythranthe glaucescens M. S. Taylor 1975-6-25 796 Butte Along Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC44819  Erythranthe guttata R. Banchero 1980-5-23 163 Butte Along Surcease Mine Rd 0.2 mi S of its jct with Bunker Mine Rd. 694 Comment
  CHSC65903  Erythranthe guttata Vernon H. Oswald 1996-4-20 7399 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  CAS-BOT-BC151464  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
  CHSC49008  Erythranthe primuloides Vernon Oswald 1983-7-19 882 Butte Bull Hill Rd. 1.0 mi n of its jct. with the Skyway and Humbug Summit Rd. 1524 Comment
  CHSC88619  Erythronium multiscapideum Linnea Hanson; Glenn Clifton 1997-3-19 370 Butte Plumas National Forest. 3 miles from Jarbo Gap, Rocky Ridge Road. Comment
  SEINET12048537  Erythronium multiscapideum Unknown 1984-1 11 Butte ca 1.8 mi S of Concow Res. & 100 yds W of Concow Rd 457 Comment
  SEINET8477399  Erythronium multiscapideum M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CHSC99545  Erythronium purpurascens L. P. Janeway 2008-6-15 9418 Butte Northern High Sierra Nevada. Along Concow Road 1.1 road km southwest of Philbrook Road; north-facing slopes above the east end of Philbrook Reservoir. 1729 Comment
  CAS-BOT-BC402642  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  CHSC10656  Eschscholzia lobbii Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  CAS-BOT-BC312030  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte Summit above Jonesville Comment
  CHSC100416  Euonymus occidentalis var. occidentalis L. P. Janeway; Heather Koeth 2008-11-19 9611 Butte Northern High Sierra Nevada. Along a small creek in a steep deep draw 150 m southwest of Bush Creek, 1.2 air km west-northwest of the mouth of Bus Creek at French Creek. 707 Comment
  CHSC92748  Euonymus occidentalis var. occidentalis L. P. Janeway; Matt Brown 2005-6-21 8426 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lockerman Creek 0.9 km north of its confluence with Camp Creek. 963 Comment
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  JEPS102784  Euonymus occidentalis var. occidentalis Lowell Ahart 2001-6-18 8879 Butte On the east side of the dirt road and east of the bridge across the West Branch of the Feather River, about 2 miles (air) SE of Stirling City. 609 Comment
  UCD142602  Euphorbia maculata John Thomas Howell 1959-9-20 34671 Butte Eastern outskirts of Oroville. 60 Comment
  CHSC97781  Eurybia radulina L. P. Janeway 2007-8-12 9158 Butte Northern High Sierra Nevada. Near junction of Bald Rock Road and Road 21N31Y, 2.3 km south of 'town' of Brush Creek. 1001 Comment
  CHSC42497  Fallopia convolvulus Lowell Ahart 1987-6-9 5722 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
  CHSC27262  Fatsia japonica P. Moyer 1971-10-30 52 Butte CSUC Campus. Front of 'A' Bldg. 60 Comment
  CHSC109547  Festuca microstachys L. P. Janeway 2012-6-7 10865 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  UC1609518  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  SEINET10963544  Festuca occidentalis Roland McKee 1918-5-26 McKee s.n. Butte Stirling. Comment
  CHSC49549  Festuca rubra Vernon Oswald 1988-5-17 3313 Butte Just w of the dam of Sly Creek Reservoir. Along the edge of the road. 1097 Comment
  CHSC59046  Festuca subulata Lowell Ahart 1992-6-26 6784 Butte On the east side of Rogers Cow Camp, about 1/2 mile north-west of Merrimac. 1219 Comment
  CAS-BOT-BC77690  Ficus carica John Thomas Howell 1959-9-20 34712 Butte Feather River Highway at West Branch bridge 152 Comment
  CHSC35072  Ficus carica R. A. Schlising 1981-11-28 4222 Butte Richvale Vernal Pools, 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  POM57352  Filago californica A. A. Heller, H. E. Brown 1902-5-9 5515 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC112357  Fimbristylis autumnalis V. Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the W end of Cana Rd., Comment
  CHSC66658  Foeniculum vulgare Vernon H. Oswald; Lowell Ahart 1996-7-22 8076 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wldlife parcel between 7 Mile Lane and the Sacramento River. Growing along the edge of a levee road along the N side of Tract 6, Sanctuary I. 33 Comment
  CAS-BOT-BC437082  Fragaria virginiana subsp. platypetala H. F. Copeland 1929-6-10 1206 Butte Jonesville 1524 Comment
  CHSC109568  Frangula californica subsp. tomentella L. P. Janeway 2012-6-23 10884 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CAS-BOT-BC55654  Frangula purshiana Lowell Ahart 1981-9-15 3175 Butte On the W side of the Sly Creek Reservoir 1150 Comment
  SEINET10454870  Frasera albicaulis subsp. nitida Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4085 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CAS-BOT-BC223387  Fraxinus dipetala A. A. Heller 1914-5-18 11405 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 Comment
  CHSC87790  Fraxinus dipetala Paul Maslin 2004-3-29 7 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609199E 4407964N. 274 Comment
  RSA31116  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  UC215516  Fraxinus dipetala Helen M. Edwards Jun 1917 Butte De Sabla Comment
  CAS-BOT-BC504377  Fritillaria John Thomas Howell 1962-6-15 37465 Butte Magalia, Sierra Nevada 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
  CAS-BOT-BC136067  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  CAS-BOT-BC130318  Fritillaria eastwoodiae Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CHSC88621  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 268 Butte Plumas National Forest. 792 Comment
  CHSC29033  Fritillaria micrantha J. D. Jokerst 1980-3-28 525 Butte E of the northern most portion of North Table Mt. 365 Comment
  CAS-BOT-BC508146  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  UC1609061  Galium aparine Lowell Ahart 1993-6-20 6988 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UCD121707  Galium aparine Robert Kehlor 1951-5-6 s.n. Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville. Comment
  UC888776  Galium bifolium A. A. Heller 1915-6-26 11027 Butte above Jonesville (summit of ridge); summit of the Sierra Nevada 2133 Comment
  CHSC113436  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. 1449 Comment
  SEINET10500694  Galium bolanderi Mary Susan Taylor 1978-7-18 Taylor 1671 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  SEINET12318317  Galium nuttallii D. G. Bendix 1978-1 8 Butte Butte Creek Canyon 5.4 km E of junction of Honey Run Rd with Skyway, 10 km E of Chico, ca 10 m NE of 100 Comment
  CHSC39493  Galium parisiense Lowell Ahart 1983-6-21 4061 Butte Along Bloomer Hill Road, 1/8 mi west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. 400 Comment
  JEPS127073  Galium parisiense Lowell Ahart 2016-5-30 20901 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CDA6657  Galium parisiense Don Black 6 Jul [year missing] Butte R1 Box 491, Chico. 0 Comment
  CHSC51911  Galium porrigens var. tenue Kim Haas 1988-4-24 6 Butte Ca 100 ft SE of Horesshoe Lake and 6.0 mi NE of Chico. 131 Comment
  CHSC46460  Galium trifidum var. pusillum V. Oswald; L. Ahart 1989-6-27 3825 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  SEINET10500749  Galium trifidum var. pusillum Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4187 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  UC1562451  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville) 30 Comment
  CAS-BOT-BC169939  Garrya fremontii H. F. Copeland 1338 Butte Neighborhood of Jonesville, 26-VII-30, by Government Trail 1676 Comment
  CHSC31917  Garrya fremontii M. S. Taylor; E. Pierce 1981-1-29 3375 Butte Both sides of Cohasset Hwy., ca. 3 mi s of Cohasset. Comment
  UC1122707  Garrya fremontii J. E. Sowder 1933-8-4 121 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  CHSC56630  Gastridium phleoides T. B. Devine 1980-6-28 717 Butte At junction of Pentz Road and Pentz-Magalia Hwy. Comment
  CHSC84035  Gastridium phleoides Lowell Ahart 2003-6-20 10295 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 45 Comment
  JEPS113793  Gastridium ventricosum Lowell Ahart 2007-6-3 13978 Butte On the east side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CHSC37446  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-6-11 3873 Butte NE part of county at Stephens Ridge, just NW of Brush Creek. 1036 Comment
  UC600543  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville Comment
  UCD103535  Gayophytum heterozygum R. Banchero; R. A. Schlising 1980-7-7 3849 Butte NE of Village of Feather Falls, 0.7 mi N of Fall River Campground and bridge. Comment
  CHSC44216  Gayophytum humile V. Oswald; L. Ahart 1988-7-13 3571 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  UC1564771  Gayophytum humile V. Oswald and L. Ahart 1989-8-22 3955 Butte e side of Humbug Rd. ca 3.5 air mi se Jonesville; Butte Creek House Meadow 1767 Comment
  SEINET10453076  Gayophytum humile Mary Susan Taylor 1978-7-19 Taylor 1779 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
  CDA43064  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC99674  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2006-9-19 4466 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles e of Jonesville, along Humbug Road. In turf of large meadow on Butte Creek. 1767 Comment
  CHSC33961  Gentianopsis simplex M. S. Taylor; L. Ahart 1981-8-16 4199 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC110102  Geranium purpureum L. P. Janeway 2012-5-29 10826 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 1.9 road km north of Lower Forbestown Road; 1.8 air km south of the Ponderosa Reservoir dam. 658 Comment
  SEINET12318330  Gilia capitata Unknown 1970-1 59 Butte 2.3 mi on Upper Park Road, Bidwell Park, Chico Comment
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC4012  Gilia capitata subsp. pedemontana D. B. Joley 1967-4-21 26 Butte Ca. 5 feet from Humbug Rd. and ca. 2.2 miles e of Skyway and Humbug Rd. corner, Chico. 60 Comment
  SEINET10837194  Gilia tricolor Mary Susan Taylor 1980-3-1 Taylor 2350 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
  UC196265  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  SEINET10460574  Githopsis pulchella subsp. campestris Robert A. Schlising 1964-6-11 Schlising 2723 Butte Few miles south of Paradise along Honeyrun Road Comment
  CHSC62540  Githopsis specularioides B. Castro 1993-5-17 464 a Butte Near the S end of Rocky Ridge, ca 30 ft w of Rim Road. 877 Comment
  CHSC93457  Githopsis specularioides Lowell Ahart 2006-5-8 12600 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 296 Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC55463  Glyceria declinata L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. In vernal pool. 38 Comment
  CHSC40274  Glyceria elata Lowell Ahart 1985-6-30 5079 Butte Along a stream, east of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC43176  Glyceria elata Robert Banchero 1981-7-19 611 Butte Big Crane Valley. Meadow. 1584 Comment
  RSA726436  Gnaphalium luteoalbum L. Ahart 2007-11-3 14553 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC302467  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  CHSC113474  Gnaphalium palustre Lowell Ahart 2014-7-10 19626 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC90949  Gnaphalium palustre Lowell Ahart 2005-4-14 11714 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CDA13240  Goodyera oblongifolia G. F. Hrusa, T. D. Wilfred 1996-7-8 13087 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET6167159  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  CHSC112904  Gratiola ebracteata B. Castro; Robin Carter 2011-4-29 1876 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC102958  Grindelia hirsutula var. davyi Lowell Ahart 2009-8-3 16263 Butte On the east side of Big Chico Creek, about 30 yards south of the gate, in the middle 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
  CHSC4573  Grindelia hirsutula var. davyi C. Glascock 1965-5-18 431 Butte SW corner of Nelson and 4th Ave., Thermalito. Comment
  CHSC97732  Grindelia hirsutula var. davyi Lowell Ahart 2007-11-3 14576 Butte On both sides of the paved road to the Lime Saddle Campground, about 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5 1/2 miles southeast of Paradise. 335 Comment
  CHSC86593  Hamamelis vernalis L. P. Janeway; John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 299 Comment
  CAS-BOT-BC306294  Hedypnois cretica Peter H. Raven 1953-5-9 5452 Butte 3.3 miles from Bangor on road to Oroville Comment
  UC177603  Hedypnois rhagadioloides H. M. Hall 1914-8-2 9832 Butte Sierra foothills back of Oroville Comment
  CAS-BOT-BC306540  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC41317  Helenium bigelovii S. C. Morey 1983-7-23 596 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET10839194  Helenium puberulum Mary Susan Taylor 1979-10-13 Taylor 2255 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. Comment
  CHSC28502  Helianthella californica var. nevadensis M. S. Taylor; J. Jokerst 1979-7-21 2159 Butte On Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC86586  Helianthella californica var. nevadensis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7859 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.2 km east-southeast of south end of Bidwell Bar bridge. 277 Comment
  CAS-BOT-BC305346  Helianthus annuus Lowell Ahart 1980-8-16 2583 Butte Near Honcut 60 Comment
  CHSC76121  Helianthus bolanderi G. F. Hrusa 1997-8-5 14066 Butte Sierra Nevada. Grown in Woodland. Magalia. Immed. N of Magalia Reservoir in N hillside above Little Butte Creek. Accessed off Holmwood Rd. Comment
  CAS-BOT-BC314997  Hemizonella minima Lowell Ahart 1982-6-4 1117 Butte 1 1/2 miles east of Camp 18 about 8 miles east of Feather Falls 1000 Comment
  UC1609221  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  CAS-BOT-BC309788  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte Near Chico Comment
  CHSC33681  Hemizonia pungens subsp. septentrionalis L. Ahart 1981-5-16 2803 Butte On Gray Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CAS-BOT-BC310159  Hesperevax caulescens Lowell Ahart 1983-5-12 3975 Butte About 1/2 mile north-east of Highway 99 and Pentz Road 65 Comment
  POM36296  Hesperevax caulescens C. C. Bruce 1897-06 2112 Butte Fields Comment
  CHSC50331  Hesperolinon californicum Vernon Oswald; Mary Bailey 1990-5-19 4220 Butte First branch of Nance Canyon northeast of the power transmission lines, its head at 'The Narrows', ca. 1.2 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 115 Comment
  SEINET10903214  Hesperolinon micranthum Mary Susan Taylor 1978-5-6 Taylor 1575 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CDA34983  Heteranthera rotundifolia John 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, north of Biggs, 2.5 mi. west of Hwy 99, 955 Butte City Hwy. (Hwy 162). 0 Comment
  POM173731  Heterocodon rariflorum H. F. Copeland 1928-8-18 945 Butte Neighborhood of Jonesville; near Butte Creek. 1524 Comment
  SEINET10483349  Heteromeles arbutifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4113 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CAS-BOT-BC310278  Heterotheca grandiflora John Thomas Howell 1959-9-20 34626 Butte Eastern outskirts of Oroville 60 Comment
  CHSC21004  Heuchera micrantha var. erubescens M. S. Taylor 1975-4-29 547 Butte On s side of Hwy 70, ca 25 mi ne of Oroville. Comment
  UC114811  Heuchera micrantha var. erubescens Mrs. R. M. Austin Mar 1896 673 Butte Little Chico Canyon Comment
  UCR146292  Hibiscus lasiocarpos Ellen Dean, Et al. 2001-8-20 870 Butte E of the Sacramento River, N of Sutter Buttes, along hwy 162, c. 3 road miles east of the intersection of Eureka St. and Hwy 162, in the town of Butte 30 Comment
  CHSC50670  Hoita macrostachya Lowell Ahart 1990-7-1 6534 Butte Along the north edge of the dirt road, along the road to the Forbestown Reservoir, about 2 miles north-east of Forbestown. 822 Comment
  CAS-BOT-BC280711  Holcus lanatus John Thomas Howell 1962-6-15 37483 Butte Magalia 731 Comment
  SEINET10507462  Holcus lanatus Mary Susan Taylor 1978-6-24 Taylor 1662 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CHSC84351  Holocarpha virgata subsp. virgata Lowell Ahart 2003-9-22 10616 Butte On the old Southern Pacific Railroad right-of-way, on the east side of Palermo Honcut Highway, about 1/2 mile north of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  CHSC4302  Hordeum murinum subsp. glaucum V. Hagaman 1966-4-25 Butte Field on Chico State College Campus. Comment
  CDA34145  Hordeum murinum subsp. leporinum L. Ahart 2009-4-3 15536 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  CHSC101126  Hordeum murinum subsp. leporinum Lowell Ahart 2009-5-8 15671 Butte On the south side of the grave road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  CHSC26471  Hordeum murinum subsp. leporinum P. Moyer 1972-3-11 126 Butte 100 ft. from Citrus Ave. Bridge on slope of n bank of Chico Ck. 60 Comment
  SEINET10591656  Hordeum vulgare J. G. Moore 1969-4-21 Moore 14 Butte West side of Salem St. between 7th & 8th St. Chico. Growing in association with Avena barbata, Triticum aestivum, & Bromus mollis. 61 Comment
  RSA4663  Horkelia fusca subsp. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville. 1550 Comment
  CHSC30709  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte On edge of Little Bald Rock near creek, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC26695  Hosackia crassifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1471 Butte On n side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  CHSC25008  Hosackia oblongifolia var. oblongifolia E. B. Copeland 1930-7-11 420 Butte Jonesville. 1500 Comment
  CHSC38501  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1983-6-14 683 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on the edge of Chico Creek. 201 Comment
  CHSC116329  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC31156  Hydrophyllum occidentale M. S. Taylor 1979-5-4 1997 A Butte Along Millsap Bar Rd in shady road embankment, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC410226  Hypericum concinnum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UC129113  Hypericum concinnum Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC51886  Hypericum mutilum L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3095 Butte Near Sacramento River: Damp bank of W side of Murphy Slough, across from Golden State Island. 38 Comment
  UC1563293  Hypericum mutilum L. Ahart 1990-10-3 6627 Butte ca. 1/4 mi. n.e. Canyon Creek Bridge across Lake Oroville (bottom of E. Fork Canyon Creek); Lake Oroville 259 Comment
  SEINET10472157  Hypericum perforatum Lowell Ahart 1990-10-3 Ahart 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC103956  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC92046  Hypochaeris radicata Lowell Ahart 2005-8-19 12333 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
  CHSC99636  Iris macrosiphon H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM 10 610006E 4406721N. 471 Comment
  RSA135847  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20692 Butte Along road crossing from Oroville-Magalia road to U.S. Highway 40 alt. via Pentz 488 Comment
  CHSC44625  Isoetes bolanderi Vernon Oswald; Lowell Ahart 1987-7-1 3064 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  CHSC84250  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  RSA5202  Isoetes melanopoda E. B. Copeland 1903-5-30 3281 Butte Unspecified Comment
  SD116543  Isoetes nuttallii Barbara Ertter, Jeff Strachan, Lowell Ahart 1980-5-7 3289 Butte Peter Ahart Ranch ca 2.5 miles north northeast of Honcut between Oroville and Marysville, dry ditches in oatfields near ponds 29 Comment
  UC1609406  Isoetes nuttallii Lowell Ahart 1993-5-17 6945 Butte about 1 1/2 mi n and 2 3/4 mi e of Honcut (about 12 mi se of Oroville, on e side of North Honcut Creek); North Honcut Creek 53 Comment
  CAS-BOT-BC112447  Isolepis cernua Lowell Ahart 1987-4-30 5495 Butte Peter Ahart Ranch, ca/ 1 1/2 mi N and 1 1/4 mi. E of Honcut. 39 Comment
  CHSC55623  Isolepis setacea L. P. Janeway 1987-6-19 2252 Butte Meadow on Pinkard Creek, between Lewis Ridge and Mooreville Ridge; 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  CHSC3365  Juglans californica var. hindsii M. Gregg 1966-4-11 90 Butte On the Nature Trail in Bidwell Park, Chico. Just off of E. 8th St. Comment
  CHSC112884  Juncus acuminatus Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.8 air mi E of Hwy 99, in N end of Thermalito Afterbay, ca 0.3 mi S of Tres Vias Rd. on E side of hill toward upper end of S-trending peninsula. 42 Comment
  CHSC79612  Juncus acuminatus G. F. Hrusa; T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 775 Comment
  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
  CHSC96092  Juncus articulatus L. P. Janeway; Marcia Waterway, Martin Lechowicz 2006-8-3 8823 A Butte Northern High Sierra Nevada. Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  JEPS115037  Juncus articulatus Lowell Ahart 2007-10-31 14511 Butte On the north side of North Honcut Creek, east of the cable across the creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville 40 Comment
  CHSC38924  Juncus balticus subsp. ater Vernon Oswald 1983-5-18 507 Butte Upper Bidwell Park, Chico, 75 ft s of Upper Park Rd. and 200 ft e of Parking Area I (0.6 mi e of the power lines). In a drainage ditch. 103 Comment
  UCD141375  Juncus bufonius H. A. Hannesson; R. N. Raynor 1940-5-9 s.n. Butte 4 miles east of Oroville. Comment
  CHSC32367  Juncus bufonius var. bufonius J. D. Jokerst 1980-5-15 698 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Hwy. Comment
  CHSC94045  Juncus bufonius var. bufonius R. D. Fischer 2005-9-1 709 Butte Sierra Nevada foothills, adjacent Hwy. 32, at the lower Humboldt Trailhead at the edge of Bidwell Park. Plants were growing on a springy slope, part of the old, by-passed, roadbed. 396 Comment
  JEPS110163  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  JEPS98488  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  SEINET10472432  Juncus capitatus Lowell Ahart 1985-5-10 Ahart 4957 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  JEPS120918  Juncus cyperoides Lowell Ahart 2013-5-27 18711 Butte On the E side of Black Bart Road, about 3/4 road miles SW of the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  RSA368330  Juncus cyperoides L. Ahart, P. Ahart 1984-7-10 4692 Butte About 0.5 mile SW of the jct. of Black Bart Road and Forbestown Road, ca. 14 miles E of Oroville. 650 Comment
  UCD141429  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte east edge of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Oroville Forbestown Highway, west of Forbestown. 2000 Comment
  UCD141451  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4.5 miles southwest of Oroville. 30 Comment
  JEPS98347  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte 5 air miles E of Magalia (W side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC96909  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14307 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill. 656 Comment
  JEPS113833  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-2 14248 Butte On the north side a water ditch, about 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville 166 Comment
  JEPS113843  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14288 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
  CHSC111068  Juncus effusus subsp. pacificus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16759 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of of gravel Lumpkin Road; UTM 10 655439 east, 4387540 north. 1242 Comment
  SEINET10472477  Juncus effusus var. pacificus Lowell Ahart 1983-8-16 Ahart 4299 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
  CHSC50697  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC84207  Juncus ensifolius Lowell Ahart 2003-6-30 10336 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
  UC1562429  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte about 0.12 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, below the high water line of Lake Oroville); Lake Oroville 259 Comment
  SEINET10472448  Juncus leiospermus Lowell Ahart 1984-5-7 Ahart 4589 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-BC110149  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte Peter Ahart Ranch, about 2.25 miles north and 0.5 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC93378  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut. 58 Comment
  CAS-BOT-BC110138  Juncus leiospermus var. leiospermus Lowell Ahart 1979-4-30 1854 Butte 7 miles north of Oroville. On the top of Table Mountain. 400 Comment
  CHSC111366  Juncus leiospermus var. leiospermus Lowell Ahart 2012-5-4 17983 Butte On the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  CHSC93495  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  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
  JEPS110155  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12589 Butte Margins of a vernal pool where there is basalt shelfing, 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 346 Comment
  UC1438371  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1702 Butte ca 7 mi n Oroville (on top of Table Mountain); Table Mountain 400 Comment
  CAS-BOT-BC110772  Juncus mertensianus Lowell Ahart 1984-7-19 4755 Butte About 0.5 mile east of Bald Mountain, about 5 miles northeast of Stirling City. 1750 Comment
  SEINET10872270  Juncus mertensianus subsp. gracilis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4755 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  RSA368326  Juncus nevadensis H. F. Copeland 1930-7-25 1358 Butte Jonesville. 1524 Comment
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CDA14052  Juncus occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-1 13700 A Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Colony in disturbed area on moist lakeshore. Perennial. Comment
  CHSC99755  Juncus occidentalis Lowell Ahart 2008-6-13 14816 A Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  JEPS113841  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill 656 Comment
  JEPS98490  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  CHSC102425  Juncus patens Lowell Ahart 2009-5-30 15779 Butte On dry soil, broad open drainage on oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC38923  Juncus patens Vernon Oswald 1983-5-18 506 Butte Upper Bidwell Park, Chico, 75 ft s of Upper Park Rd. and 200 ft e of Parking Area I (0.6 mi e of the power lines). 103 Comment
  CAS-BOT-BC278768  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Near parking for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock, northern Sierra Nevada Highlands (n SNH) 1050 Comment
  CHSC96965  Juncus trilocularis Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  CHSC47573  Juncus uncialis Lowell Ahart 1978-4-10 1626 Butte On the bottom of vernal pools and swales, Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC1543891  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC96956  Juncus usitatus Lowell Ahart 2007-7-11 14292 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
  JEPS113749  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale 29 Comment
  JEPS87130  Juncus usitatus Lowell Ahart 1992-7-23 6828 Butte ca. 2 mi. w. Oroville Dam (near Longs Bar Monument, n. side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
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Nov 1 2009
  CHSC3339  Juniperus phoenicea Robert L. Smith 1966-3-4 40 Butte U. S. Plant Introduction Station 5 miles SE of Chico. Comment
  SEINET10964512  Keckiella Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5520 Butte Arch Rock Tunnel Picnic Area on Hwy 70, near Butte/Plumas County line. On granite, overlooking Feather River. Comment
  CHSC61016  Keckiella breviflora var. glabrisepala Lowell Ahart 1993-6-26 7041 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  NY786845  Keckiella breviflora var. glabrisepala J. L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609.6 Comment
  CHSC38693  Keckiella corymbosa Vernon Oswald 1983-7-22 896 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. 85 Comment
  NY790318  Keckiella lemmonii A. A. Heller 1902-5-6 5471 Butte Berry Canyon (near Clear Creek) Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  UCD85964  Koeleria macrantha W. R. Powell 1968-5-16 1505 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CHSC26818  Koeleria phleoides M. S. Taylor 1978-5-7 1594 Butte On e side of Williams Rd, ca. 1/2 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  UC204878  Koeleria phleoides A. A. Heller 1914-5-19 11417 Butte Comment
  CHSC4662  Kumlienia hystricula R. Carter 1966-4-11 340 Butte Found ca. 1/4 mi. E of Bidwell Bar along S side of R.R. tracks; on cliff. 152 Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  CHSC26761  Lagophylla glandulosa M. S. Taylor; M. Hayes 1977-8-16 1438 Butte On both sides of Williams Rd, ca. 300 yds n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CAS-BOT-BC341313  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CHSC30546  Lamarckia aurea J. D. Jokerst 1980-3-23 93 Butte Along sides of Hwy 70 at its jct with the West Branch of Feather River. Comment
  CHSC41773  Lamium amplexicaule Lowell Ahart 1986-11-7 5420 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC30691  Lasthenia californica M. S. Taylor 1980-3-1 2352 Butte Near Elliot Spring House, s side of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC7100  Lasthenia californica Nancy Wiseman 1969-4-17 Butte 50 yds n of Skyway ca. 1 mi e of Chico. Comment
  SEINET10473883  Lasthenia californica Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4869 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
  SEINET10475345  Lasthenia chrysostoma Mary Susan Taylor 1973-1 Taylor 4 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC65892  Lasthenia fremontii Vernon H. Oswald 1996-4-20 7393 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S half of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CDA34700  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 miles (air) northeast of Oroville. Comment
  SEINET5327269  Lathyrus jepsonii var. californicus R. McKee 1916-5-4 s.n. Butte Adobe Creek, west of Chico Comment
  CHSC50666  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte On the east side of the North Fork of the Feather River, near the Poe Power House, about 2 air miles south-east of Jarbo Gap. 274 Comment
  UC1562445  Lathyrus latifolius Lowell Ahart 1990-6-1 6506 Butte about 2 air mi se Jarbo Gap (near the Poe Power House, on the e side of the Feather River) 274 Comment
  RSA424763  Lathyrus latifolius Aaron Liston, M. Blumler 1987-4-24 659 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CDA14068  Lathyrus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-1 13716 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  UC15343  Lathyrus nevadensis var. nevadensis Mrs. R. M. Austin Jun 1898 Butte Forest Ranch Comment
  SEINET5327314  Lathyrus nuttallii R. McKee 1918-4-28 s.n. Butte Appleton Comment
  SEINET12151178  Lathyrus sphaericus C. V. Piper 1906-1 s.n. Butte Chico Comment
  CAS-BOT-BC213296  Lathyrus sulphureus Carl B. Wolf 1937-5-18 8730 Butte 5 mi. below Magalia on Oroville Road, Northern Sierra Nevada 609 Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 Comment
  LA205072  Lathyrus sulphureus C. B. Wolf; 1937-5-18 8730 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  CHSC45893  Layia fremontii Lowell Ahart 1974-4-11 365 Butte Vernal pool or swale, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC90108  Layia fremontii Richard R. Snow 1991-3-20 3 Butte 5 ft north of Renkow Road about 12.8 mi north of Chico. Roadside area. 70 Comment
  CAS-BOT-BC321782  Layia fremontii John Thomas Howell 1976-4-2 51557 Butte About 2 miles SE of Chico 60 Comment
  CHSC8142  Layia septentrionalis J. G. Moore 1969-4-18 89 Butte Magalia Hwy., 50 yds. s along roadside, from Pentz Rd intersection. 152 Comment
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May 24 2013
  CHSC49554  Leersia oryzoides Vernon Oswald 1987-6-18 3005 Butte Butte Creek Reserve on the s side of the creek, n of the Skyway, ca. 0.25 mi w of the double set of transmission lines. 85 Comment
  CHSC78401  Lemna minor Lowell Ahart 2000-7-23 8604 Butte Near a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC49692  Lemna minuta Vernon Oswald 1987-3-20 2294 Butte West side of Hwy 99, 0.6 mi nw of Butte Creek. In a dredger pond. 67 Comment
  SBBG28947  Lemna trisulca E. B. Copeland 1930-7-18 Butte Jonesville 1550 Comment
  CHSC103707  Leontodon saxatilis subsp. longirostris Lowell Ahart 2010-6-1 16755 Butte On the south side of the Guardians Trail, about 150 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  CAS-BOT-BC339119  Leontodon saxatilis subsp. saxatilis Lowell Ahart 1972-6-20 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 150 Comment
  CAS-BOT-BC215732  Lepechinia calycina Lowell Ahart 1989-5-29 6305 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CHSC37619  Lepechinia calycina T. B. Devine 1979-7-8 582 Butte Along Hwy. 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC85395  Lepidium nitidum John Dittes; Josephine Guardino 1992-5-7 484 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  UCD115785  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC89881  Lepidium nitidum Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC75261  Lepidium nitidum var. nitidum Jennifer Slater 1997-4-6 13 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC92547  Lepidium nitidum var. nitidum L. P. Janeway 2005-3-10 8348 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  RSA767799  Lepidium nitidum var. nitidum L. Ahart 2010-3-14 16571 Butte About 50 yards north of the wash, Peter Ahart Ranch, about 1.5 miles north and 1.25 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC77817  Lepidium strictum Lowell Ahart 2000-4-15 8328 Butte East margin of road leading to the Huncut Substation, on the south side of Lower Honcut Road, about 200 feet east of Highway 70, about 3 miles west of Honcut. 27 Comment
  JEPS98318  Lepidium virginicum Lowell Ahart 2000-3-25 8325 Butte Oroville, Ehmann Home, NE of the Oroville Post Office 36 Comment
  CHSC50811  Leptochloa fusca subsp. fascicularis Vernon Oswald; Lowell Ahart 1990-7-31 4413 Butte Lake Oroville at Vinton Gulch, ca. 0.7 mi (air) north of Cherokee. Bordering streamlet on the strand of the lake below the level of the cement ramp. 259 Comment
  CHSC51289  Leptochloa fusca subsp. fascicularis Lowell Ahart 1990-9-30 6607 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC66175  Leptochloa fusca subsp. fascicularis Vernon H. Oswald; Lowell Ahart 1996-5-27 7664 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of Tract 1.1, Sanctuary II. 33 Comment
  CHSC10557  Leptosiphon androsaceus Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC32609  Leptosiphon bolanderi J. D. Jokerst 1981-3-28 1268 Butte Butte College Campus, adj to ephemeral creek. Ca 500 m due N of the jct of Pentz and Clark roads. 97 Comment
  CHSC62775  Leptosiphon filipes L. P. Janeway 1993-6-9 4376 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. East-facing slope above French Creek. 621 Comment
  SJSU8718  Leptosiphon filipes J. B. Willis Jr. 1969-5-3 91 Butte near Cherokee Rd 7.5 mi NE of Oroville Comment
  CHSC96553  Leptosiphon parviflorus L. P. Janeway 2006-4-30 8562 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  UC1287398  Lessingia nana Willard Spence 1960-9-7 624 Butte 0.5 mi off Rt. 99E on Cana Pine Creek Rd. (approximately half way between Chico and Vina) Comment
  CAS-BOT-BC341741  Lessingia nana A. A. Heller 1922-8-25 13734 Butte On the Richardson Springs road about 4 miles from Chico Comment
  CAS-BOT-BC342062  Lessingia virgata Lowell Ahart 1981-9-27 3211 Butte North-east of Palermo 80 Comment
  CHSC97256  Lewisia cantelovii Lowell Ahart 2007-5-16 13894 Butte On the east side of Highway 70, about 150 yards no ... Field redacted by CHSC, contact the data manager for more information 463 Comment
  JEPS94189  Lilaea scilloides Lowell Ahart 1998-4-29 7954 Butte ca. 7 mi. n. Oroville (n.e. of large parking area on North Table Mt., on e. side of Cherokee Rd.); North Table Mt. 426 Comment
  CHSC43073  Lilium humboldtii R. A. Schlising; Diane Ikeda 1987-6-12 4512 Butte S of Cohasset, along Cohasset Rd. ... Field redacted by CHSC, contact the data manager for more information 457 Comment
  POM161665  Lilium kelleyanum E. B. Copeland 1929-07 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  CHSC41464  Lilium washingtonianum Lowell Ahart 1986-7-2 5335 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  UCD116443  Limnanthes H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  JEPS19590  Limnanthes alba Harry A. Dutton 1921-4-25 Butte sw Oroville Comment
  RSA424712  Limnanthes douglasii subsp. rosea Aaron Liston, M. Blumler 1987-4-24 658 -3 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC29028  Limnanthes floccosa subsp. californica J. D. Jokerst 1980-3-27 520 Butte Ca 1/2 mi N of Chico Muni Airport, E of Cohasset Hwy. 97 Comment
  UC971878  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1255 Butte 8 mi nw Oroville (along the Oroville-Chico road, near a large asphalt area marked Bombing Range) Comment
  CHSC67558  Limnanthes floccosa subsp. floccosa James D. Jokerst 1980-3-27 519 Butte E of Cohasset Hwy. at Chico Municipal Airport. 67 Comment
  CHSC50412  Limonium sinuatum Vernon Oswald; Mary Bailey 1990-6-27 4336 Butte Hwy 99, 0.3 mi southeast of the Skyway-Park Ave interchange in south Chico. 64 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
  CHSC24786  Linanthus dichotomus C. E. Stopher 1976-4-13 17 Butte 2.4 km s of Forest Ranch. 579 Comment
  SEINET10496798  Linanthus filipes Mary Susan Taylor 1978-4-14 Taylor 1561 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
  JEPS117685  Linanthus harknessii Lowell Ahart 2010-9-21 17231 Butte Near a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  JEPS87152  Linanthus harknessii Lowell Ahart 1992-7-29 6887 Butte about 0.75 mi nw Lotts Lake (near Coon Hollow Creek, about 1 mi ne of the Carr Mine) 1798 Comment
  UC1185290  Linanthus parviflorus H. E. Brown 1896-10-2 185 Butte near Oroville 53 Comment
  UC947528  Linanthus parviflorus A. G. Vestal 1947-4-30 Butte road to Cherokee Comment
  CHSC35091  Linanthus pungens R. A. Schlising; R. Banchero 1980-7-28 3930 Butte E of Jonesville, on road toward Scotts John Creek. 1889 Comment
  CDA13285  Linnaea borealis var. longiflora G. F. Hrusa, T. D. Wilfred 1996-7-9 13133 Butte Plumas National Forest; along Jordan Ck, at top of waterfall above confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp Comment
  CHSC30035  Linum bienne L. Ahart 1980-5-4 2203 Butte About 50 m southwest of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC41226  Linum bienne J. D. Jokerst 1984-5-24 2029 Butte Cherokee area near Campbell Flat, east of Table Mt. Comment
  UC109513  Linum lewisii T. S. Brandegee 1902-6-28 Butte Jonesville Comment
  SEINET10533521  Liquidambar styraciflua Mary Susan Taylor 1975-5-6 Taylor 563 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  UC600634  Listera convallarioides W. F. Wright 1926-7-12 324 Butte near Butte Creek Comment
  CHSC4658  Lithophragma bolanderi R. Carter 1966-4-11 331 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R. R. tracks on S side of river; growing on rocky slope on E side of bridge over s. Fork of Feather R. Comment
  CHSC52134  Lithophragma bolanderi Carol A. Bordin 1983-4-19 19 Butte S Pentz-Magalia Hwy and Hwy 70 intersection, 0.3 mi e of Hwy 70 to Cherokee Rd. ca. 7.2 mi n of Cherokee Rd and ca. 6 mi n of Oroville city limit. Table Mtn. 335 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
  CHSC65435  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1988-3-22 3261 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 60 Comment
  CHSC29099  Lithospermum californicum M. S. Taylor; J. D. Jokerst 1980-4-18 2507 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC32735  Lithospermum californicum M. S. Taylor 1981-4-8 3511 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), along Rocky Ridge, ca. 5.5 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 20 air mi n of Oroville. 883 Comment
  CDA43081  Lobularia maritima L. P. Janeway 2011-10-2 10779 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CAS-BOT-BC342140  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) 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
  UCD134145  Logfia gallica H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte Feather River, 4 miles south of Oroville. Comment
  UC875115  Lomatium caruifolium var. denticulatum A. A. Heller 1915-3-6 11769 Butte 8 mi. n. Oroville Comment
  CHSC63800  Lomatium dasycarpum subsp. tomentosum Gerald A. Winter 1989-4-15 10 Butte On n facing slope on s side of Big Chico Creek, ca. 100 yds e of diversion dam but before salmon hole. 76 Comment
  CHSC87788  Lomatium dasycarpum subsp. tomentosum Paul Maslin 2004-3-1 5 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609832E 4413221N. 505 Comment
  CHSC104828  Lomatium dissectum var. multifidum Lowell Ahart 2010-5-7 16632 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) east of Chico. 301 Comment
  CHSC40436  Lomatium marginatum Lowell Ahart 1985-5-15 4990 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 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
  CHSC102191  Lomatium marginatum var. purpureum George W. Hartwell 2009-4-4 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 860 Comment
  JEPS104014  Lomatium utriculatum Lowell Ahart 2003-4-10 10067 Butte On the top of cliffs, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  CAS-BOT-BC240448  Lonicera hispidula Margaret J. Williams; Wayne Roderick 1984-5-25 84- 23 -1 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam 457 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
  CHSC54337  Lonicera hispidula Lowell Ahart 1991-6-22 6664 Butte West of Springtown Road, near Lake Oroville. 304 Comment
  CHSC101834  Lonicera interrupta Lowell Ahart 2009-5-23 15756 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 west side of Ten Mile House Road, north of Guardians Trail. 381 Comment
  CHSC25257  Lonicera interrupta M. S. Taylor 1977-6-26 1373 Butte On S side of Ponderosa Way, ca. 1 mi E of Cohasset. 609 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
  JEPS114734  Lotus humistratus Lowell Ahart 2008-5-12 14755 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET10451972  Lotus humistratus Mary Susan Taylor 1978-5-6 Taylor 1571 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET12165761  Lotus nevadensis Unknown 1985-1 5039 Butte Enterprise Lauch Area, ca 3/4miW of Enterprise Bridge acroos Lake Oroville, NE of Oroville 274 Comment
  JEPS114728  Lotus nevadensis var. nevadensis Lowell Ahart 2008-5-8 14716 Butte Below the high water line of Lake Oroville, about 250 yards south of the poor parking area, on the east side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  UC862227  Lotus purshianus var. purshianus A. A. Heller 1917-7-26 12845 Butte Butte Meadows 1402 Comment
  CHSC71185  Ludwigia palustris Lowell Ahart 1998-6-30 8013 Butte In a seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CDA5220  Ludwigia uruguayensis L. Ahart 2000-7-18 8601 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CDA7108  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. Comment
  CHSC65559  Lupinus albicaulis L. P. Janeway 1995-6-20 4805 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  SFV11556  Lupinus albifrons M. L. Vincent 1965-4-16 618 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  CHSC115358  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte Steep east road cut, along Oregon Gulch Road, about one mile south of Oregon city, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  CAS-BOT-BC201354  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49117 Butte Cherokee Comment
  POM24982  Lupinus albifrons var. eminens C. C. Bruce 1897-05 2027 Butte Little Chico. Comment
  RSA699546  Lupinus arbustus Paul Maslin 2004-4-15 14 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  UCD107232  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 miles below Cenerville in the Sierra foothills. 76 Comment
  UCD107337  Lupinus bicolor Collector Unknown 1925-5-17 1740 Butte Marysville Buttes. Comment
  UC1530702  Lupinus bicolor Lowell Ahart 1985-4-1 4873 a Butte 7 mi n of Oroville (near Cambell Overflow; along Table Mountain Blvd, a little s of the intersection of Hwy 70 and 149,) Comment
  CHSC923  Lupinus bicolor var. tridentatus L. Nelson 1935-3-12 Butte Paradise. 548 Comment
  SEINET10452693  Lupinus latifolius subsp. longipes Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4197 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
  CDA27454  Lupinus latifolius var. columbianus Vernon H. Oswald & Lowell Ahart 1998-8-11 9471 Butte Four Trees-Coyote Gap Road 0.4 mile west of Four Trees. Comment
  CHSC81268  Lupinus microcarpus var. densiflorus J. Trizzino 2001-4-24 49 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Along Big Chico Creek. 91 Comment
  CHSC90509  Lupinus microcarpus var. densiflorus S. B. Collom 1988-4-24 3 Butte Ca. .3 mi e of entrance to Richardson's Spring Rd., off of Cohasset Highway, 1 mi ne of Chico Municipal Airport. Comment
  SEINET12765224  Lupinus microcarpus var. densiflorus Lowell Ahart 1992-5-9 6762 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville.; 0 76 Comment
  CHSC84647  Lupinus microcarpus var. microcarpus Matt Quinn 2001-4-26 53 Butte Approximately 1500 feet east of Clark Road and 1/2 mile south of Fallager Creek. 85 Comment
  CHSC90370  Lupinus nanus Joseph Silveira 1982-4-17 5 Butte 65 m ene of Horseshoe Lake and 80 m n of Big Chico Creek, 4 km ne of Chico. 190 Comment
  JEPS18176  Lupinus nanus Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5609 Butte along road to Oroville from Cherokee 3.5 mi n Cherokee (at top of descent into North Fork Feather River Canyon); top of descent into North Fork Feather River Canyon 396 Comment
  UCD108986  Lupinus nanus A. A. Heller 1913-3-9 10682 Butte hills two miles north of Oroville. 91 Comment
  UCD108993  Lupinus nanus A. A. Heller 1914-4-21 11311 Butte Chico. Comment
  CHSC86539  Lupinus nanus var. vallicola L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek. 287 Comment
  CHSC38512  Lupinus pachylobus Vernon Oswald 1983-3-13 166 Butte Upper Bidwell Park, Chico, ca. 100 ft s of Upper Park Rd. and 800 ft e of Parking Area N at Salmon Hole. 176 Comment
  JEPS87401  Lupinus pachylobus Vernon H. Oswald and Lowell Ahart 1993-3-24 5243 Butte e side Dry Creek Canyon (n of the historical site of Pentz, on the e side of a secondary drainage entering Dry Creek 2 mi n Pentz Rd. Area burned during previous summer); e side of Dry Creek Canyon n of historical site of Pentz 262 Comment
  UC727079  Lupinus polyphyllus var. burkei A. A. Heller 1938-7-20 15279 Butte upper end Snag Lake (7 mi e of Chaparral); upper end of Snag Lake 1524 Comment
  CAS-BOT-BC322126  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd, ca. 1 mi E of Lake Madrone. 670 Comment
  CHSC24642  Lupinus stiversii S. Deaton 1976-4-14 24 Butte E bank of Feather Falls trail ca. 3 1/2 mi n of Falls parking lot. 944 Comment
  RSA32915  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte Near De Sabla. Comment
  POM24038  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-05 2034 Butte Butte Creek. Comment
  RSA774132  Luzula comosa var. comosa L. Ahart 2010-9-21 17203 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CAS-BOT-BC320471  Luzula comosa var. laxa Peter F. Zika 2011-7-6 25530 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  CHSC118497  Luzula macrantha L. P. Janeway 2016-5-9 11951 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC52715  Luzula macrantha L. P. Janeway 1987-5-20 2081 Butte North Fork Feather River; above Hwy 70 3.1 mi NE of the Pulga bridge. 472 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
  SEINET10537469  Lychnis coronaria Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4229 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SEINET10452837  Lythrum californicum Mary Susan Taylor 1978-9-8 Taylor 1904 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  UC204403  Lythrum hyssopifolia A. A. Heller 1914-5-30 11471 Butte 6 mi nw of Chico (Sacramento Valley); Sacramento Valley Comment
  CDA5138  Lythrum hyssopifolia T. C. Fuller 1962-5-17 8716 Butte Highway 99E, 12.3 miles northwest of Chico. 0 Comment
  OBI48938  Lythrum hyssopifolia Lewis S. Rose 1939-6-11 39275 Butte 3 mi E of Honcut 46 Comment
  CDA18880  Lythrum salicaria Riley, Villegas 2000-5-24 PDR 1170754 Butte Vicinity of Wyman Ravine, on the westside and eastside of Lincoln Blvd. 0 Comment
  CHSC111173  Lythrum tribracteatum Lowell Ahart 2013-6-18 18806 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CAS-BOT-BC342642  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  CHSC31571  Madia elegans subsp. densifolia L. Ahart 1974-8-14 602 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36840  Madia elegans subsp. elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC45220  Madia exigua Lowell Ahart 1979-6-9 1929 Butte Near a dirt road, about 1/4 mile east of Magalia. 640 Comment
  RSA169436  Madia exigua L. S. Rose 1963-6-2 63069 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  CHSC20525  Magnolia kobus Pamela Caldwell 1972-3-4 Butte CSUC campus. SE corner of Cafeteria Annex. Comment
  CHSC6005  Magnolia soulangeana M. MacArthur 1968-6-19 267 Butte NE end PSA bld., Chico State College. 60 Comment
  CAS-BOT-BC347376  Malacothrix floccifera Clarence R. Quick 1952-7-1 52 -128 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CDA5038  Malva nicaeensis L. P. Janeway, B. Castro 1999-6-4 6454 Butte Sacramento Valley. Along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 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
  JEPS88407  Malvella leprosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8094 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. (n.e. c); Sacamento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC3467  Marah fabacea var. agrestis Roger Jaegel 1966-3-2 17 Butte 4 miles northeast of Chico. Along the bank of Big Chico Crk. Upper Bidwell Park. Comment
  SEINET10448100  Marah watsonii Mary Susan Taylor 1973-1 Taylor 21 Butte Along Humbug Road, ESE of Chico; Yellow Pine Forest. Comment
  CHSC51060  Marrubium vulgare Pauleen Broyles 1987-4-29 1016 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. Near Pine Creek just below its confluence with Singer Creek. Comment
  JEPS115835  Marrubium vulgare Lowell Ahart 2009-4-22 15581 Butte East side of the trail, Upper Bidwell Park, just west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  SEINET10498135  Marrubium vulgare Mary Susan Taylor 1975-2-16 Taylor 386 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
  SEINET10530352  Marsilea vestita Mary Susan Taylor 1980-6-29 Taylor 2989 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  SEINET10530353  Marsilea vestita Mary Susan Taylor 1978-9-8 Taylor 1879 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET10530355  Marsilea vestita Mary Susan Taylor 1975-10-4 Taylor 958 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  JEPS113778  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC58021  Matricaria occidentalis Vernon H. Oswald; Wes Dempsey 1992-5-20 4943 Butte South-east corner of Llano Seco. In a field bordering a marsh. 30 Comment
  POM97345  Meconella californica C. C. Bruce 1897-03 2018 Butte Foothills near Chico Comment
  CHSC63250  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  CHSC96248  Medicago arabica R. Fischer 2006-4-25 1001 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing at the southern end of reserve on the west facing hillside in small openings adjacent seasonal springs. 304 Comment
  CHSC42527  Medicago polymorpha Lowell Ahart 1987-4-30 5493 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC945  Medicago polymorpha A. Koopman 1929-3-5 Butte CSC Campus. 57 Comment
  CHSC46883  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi s of Lomo (2.3 mi s of ford over Cedar Creek). 1219 Comment
  JEPS113698  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  CAS-BOT-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  CHSC38828  Melica californica Vernon Oswald 1983-7-3 802 Butte Upper Bidwell Park, Chico, on the rim overlooking Sycamore Creek Canyon ca. 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC8226  Melica californica D. McClain 1969-5-1 67 Butte 15 yds. s. of Cohasset Rd., 3.2 mi e. of Cohasset. 457 Comment
  UCD23593  Melica californica John Thomas Howell 1971-6-16 37540 Butte Magalia. 731 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
  CAS-BOT-BC282052  Melica fugax Lowell Ahart 1980-8-2 2523 Butte Humboldt Peak 2300 Comment
  CHSC87955  Melica geyeri Lowell Ahart 2004-6-22 11110 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  UCR115105  Melica harfordii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CHSC100928  Melica stricta R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4327 Butte Northeast of Phillbrook Reservoir, along crest of Snow Mountain 2103 Comment
  CHSC47045  Melica stricta R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4641 Butte NE part of county, Snow Mountain ridge. 2072 Comment
  CHSC31422  Melilotus albus L. Ahart 1980-9-10 2629 Butte Along edge of the road ca. 1 mi ne of Millsap Bar, ca. 25 mi ne of Oroville. 900 Comment
  CHSC83001  Melissa officinalis Lowell Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Falls. 741 Comment
  RSA724861  Mentha pulegium L. P. Janeway 2006-7-19 8818 Butte Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilbur Road, 2.1 km south of Hwy. 162. 41 Comment
  CDA5706  Mentha spicata var. spicata L. Ahart 2000-8-3 8675 Butte About 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC428757  Micranthes californica Lowell Ahart 1980-3-26 2054 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC7051  Micranthes integrifolia J. G. Moore 1969-2-25 112 Butte In Upper Bidwell Park 200 yds. w of rifle range and 100 yds. n of golf course entrance. 67 Comment
  CAS-BOT-BC429037  Micranthes nidifica Lowell Ahart 1974-2-12 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC429041  Micranthes nidifica Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  CAS-BOT-BC348317  Micropus californicus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SFV10349  Micropus californicus M. L. Vincent 1963-6-6 373 Butte In mountain meadow, 1 mile west from Nelson Bar Road at stream. Comment
  CHSC101220  Micropus californicus var. californicus G. F. Hrusa; R. Gross, L. Houser 2008-4-11 17094 Butte Open, chaparral slopes with woodland on N faces immediately below Indian Valley Reservoir spillway into North Fork Cache Creek tailrace. 396 Comment
  CHSC93448  Micropus californicus var. californicus Lowell Ahart 2006-5-10 12624 Butte Road cut bank, on the north 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
  HSC68241  Micropus californicus var. californicus J. P. Smith, J. O. Sawyer 1973-4-14 6045 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  UC34479  Micropus californicus var. californicus F. Z. Hoffman 1898-3-19 Butte Chico Comment
  UCSB63614  Micropus californicus var. californicus Cooley, Patrick 1990-4-7 Butte Humbolt Rd. ca. 2 mi. e of Chico, Butte Co.; Chico Quadrangle, 7.5', SW 1/4 of NE 1/4 of SW 1/4 Sect. 21, T22N, R2E 152 Comment
  CAS-BOT-BC348880  Microseris douglasii subsp. douglasii Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC31775  Microsteris gracilis L. Ahart 1975-3-26 723 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  RSA535780  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge. Griffith residence, 4.4 mi NE of Keefer Road along cohasset Hsy, then 0.4-0.6 mi s along private dirt road; 396 Comment
  HSC66316  Mimulus aurantiacus var. grandiflorus G. L. Cranford 1968-4-23 29 Butte 4 mi. E of Chico, on Covered Bridge Rd. 305 Comment
  UC600647  Mimulus bicolor E. B. Copeland 1931-5-9 Butte Jonesville Comment
  JEPS115821  Mimulus glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS29841  Mimulus glaucescens Rimo Bacigalupi and L. R. Heckard 1962-6-1 8585 Butte 1 mi below and w Paradise (along Honey Run Road, in upper reaches of canyon); Butte Creek canyon 365 Comment
  RSA0087958  Mimulus glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. 780 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
  SEINET10962510  Mimulus guttatus Lowell Ahart 1985-6-17 Ahart 5056 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CAS-BOT-BC7511  Mimulus guttatus var. glaucescens R. M. Austin 1883-5-1 s.n. Butte unspecified Comment
  UCD96101  Mimulus kelloggii Dena Grossenbacher; Brian Green 2008-5-5 816 Butte Cohasset Ridge along Vilas Road where it crosses Mud Creek on slope just northeast of the road. 761 Comment
  RSA792652  Mimulus kelloggii Dena Grossenbacher, Brian Green 2008-4-8 758 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  JEPS107776  Mimulus microphyllus Lowell Ahart 2005-5-2 11781 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
  UCD96094  Mimulus microphyllus Dena Grossenbacher; Brian Green 2008-5-3 813 Butte About 2.25 miles from Bardees Bar Road junction on forest service road 22N37. 328 Comment
  JEPS115182  Mimulus moniliformis Lowell Ahart 2009-6-30 15978 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
  CDA41843  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte East roadside of Highway 32, ca. 1 mile northeast of road Forest Ranch. Comment
  CHSC38705  Mimulus moschatus Vernon Oswald 1983-5-27 565 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC64052  Mimulus moschatus S. C. Morey 1984-8-4 709 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  JEPS122032  Mimulus moschatus Lowell Ahart 2014-7-2 19538 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
  UC1562310  Mimulus tilingii Vernon Oswald and Lowell Ahart 1990-7-19 4376 Butte ca 3 mi e Philbrook Reservoir (ca 0.4 mi w of Plumas Co. line, s side of creek); Philbrook Creek 1920 Comment
  SFV3401  Mimulus torreyi M. L. Vincent 1960-7-12 96 Butte Sierra Nevada On shore of new Paradise Dam, north of Paradise. 780 Comment
  JEPS117548  Mimulus tricolor Lowell Ahart 2010-6-20 16820 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  UC336556  Mimulus tricolor Edw. L. Greene June 1890 Butte Chico Comment
  JEPS110187  Minuartia californica Lowell Ahart 2006-4-28 12551 Butte About 150 yards south of the rim of Beatson Hollow, about 1 mile (air) west of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 333 Comment
  CHSC103741  Minuartia cismontana Lowell Ahart 2010-5-16 16704 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 373 Comment
  CHSC38296  Minuartia douglasii Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. On a basaltic cap overlooking Chico Creek. 198 Comment
  SEINET11933237  Minuartia douglasii Unknown 1984-1 87 Butte Ca 440 yds W of Cherokee Rd., on North Table Mountain. Ca 6 mi N of Oroville 396 Comment
  JEPS114588  Moenchia erecta subsp. erecta Lowell Ahart 2008-5-30 14800 Butte Mowed parking area at the cemetery, about 300 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 331 Comment
  CHSC28460  Mollugo verticillata R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. In sand of river bar. Comment
  CHSC83087  Mollugo verticillata Lowell Ahart 2002-10-17 9983 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
  JEPS42874  Mollugo verticillata W. L. Jepson 1939-8-17 19459 Butte near Oroville (Feather River); Feather River 45 Comment
  RSA688936  Mollugo verticillata L. Ahart 1986-11-14 5478 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 37 Comment
  CHSC52228  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-22 3067 Butte Upper Philbrook cyn, 0.7 mi W of the pass. 1889 Comment
  CHSC43020  Monardella sheltonii L. P. Janeway 1987-6-8 2155 Butte On Fourmile Ridge near French Cr just south of Fourmile Ridge Rd on rd into Ram Cr. 716 Comment
  CHSC67981  Monardella sheltonii James D. Jokerst 1989-7-3 3124 Butte Hwy. 70 and Pulga Rd. Comment
  POM61383  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  RSA71308  Monardella sheltonii L. S. Rose 1951-6-26 51019 Butte Jarboe Pass. 22 mi. n. of Oroville 579 Comment
  RSA712788  Monardella villosa subsp. sheltonii L. P. Janeway 1994-6-23 4672 Butte Pinkston Canyon Road about 400 feet east of Concow Road. 564 Comment
  CHSC34130  Monochoria vaginalis L. Ahart 1981-9-19 3193 Butte In a rice field a little w of the Butte County Rice Experiment Station, ca. 3 mi w of Hwy 99 on Hwy 162, ca. 3 mi n of Biggs. 35 Comment
  UC1586510  Monochoria vaginalis Vernon H. Oswald and Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Highway 162, ca. 3.5 mi north-northwest of Biggs. 30 Comment
  CDA2665  Monochoria vaginalis T. C. Fuller 1959-10-2 3140 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  SEINET10572756  Montia Mary Susan Taylor 1980-5-27 Taylor 2652 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  OBI10803  Montia chamissoi H. F. Copeland Jul-33 s.n. Butte Vicinity of Jonesville, Lassen natl forest Comment
  CAS-BOT-BC444886  Montia fontana Lowell Ahart 1990-4-15 6462 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  JEPS87430  Montia fontana Vernon H. Oswald and Lowell Ahart 1993-3-24 5244 Butte 2 mi n of Pentz Road (e side of Canyon n of the historical site of Pentz, on e side of secondary drainage entering Dry Creek); Dry Creek Canyon 262 Comment
  CHSC61992  Montia parvifolia Lowell Ahart 1993-7-22 7079 Butte In the campground on the west side of the bridge across Fall River, about 9 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS110334  Muhlenbergia andina Lowell Ahart 2006-10-8 13423 Butte East side of the North Fork of the Feather River, about 50 yards north of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  JEPS122161  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC260528  Muhlenbergia filiformis Blanche Clear 1938-7-15 s.n. Butte Deer Creek, dirt road to Butte Meadows Comment
  CAS-BOT-BC260538  Muhlenbergia filiformis A. A. Heller 1917-7-28 12833 Butte Butte Meadows 1280 Comment
  CHSC34187  Muhlenbergia filiformis L. Ahart 1981-9-15 3168 Butte In the swamp, where the road forks and crosses French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC38833  Muhlenbergia filiformis Vernon Oswald 1982-10-22 3 Butte Bidwell Park, Chico. Seep ca. 50 ft s of Upper Park Rd ca. 3.1 mi e of its junction with Wildwood Ave at a place called Diversion Dam. 121 Comment
  JEPS95025  Muhlenbergia filiformis Lowell Ahart 1997-10-20 7931 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of sharp bend in South Fork Feather River, about 1/4 mi n of bridge across the river, about 3/4 mi n of Golden Trout Crossing); South Fork Feather River 914 Comment
  JEPS95821  Muhlenbergia filiformis Lowell Ahart 1999-10-3 8284 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  POM196131  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  SEINET10662400  Muhlenbergia filiformis Lowell Ahart, Vernon H. Oswald 1999-10-3 Ahart 8284 Butte T20N, R1W, Section not surveyed. Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, aout 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC275345  Muhlenbergia mexicana J. W. Stacey 1933-9-29 s.n. Butte Chico Comment
  CHSC102622  Muhlenbergia mexicana Lowell Ahart 2009-7-9 16023 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  UCD86785  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  CHSC30882  Myosurus apetalus var. borealis J. D. Jokerst 1979-4-6 1180 Butte On bottom of vernal pools. Top of North Table Mt, ca. .75 mi N of Cherokee Rd. 396 Comment
  CHSC31165  Myosurus apetalus var. borealis M. S. Taylor; J. D. Jokerst 1980-3-28 2401 Butte In and around vernal pools, jst e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1.5 mi e of Hwy 99. 76 Comment
  CHSC112729  Myriophyllum spicatum Lowell Ahart 2013-10-16 19113 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  SEINET11268246  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville.; 0 38 Comment
  CAS-BOT-BC259752  Nassella cernua A. A. Heller 1902-5-8 5497 Butte Berry Canyon (near Clear Creek) Comment
  JEPS115953  Nassella pulchra Lowell Ahart 2009-4-26 15617 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  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
  CHSC105179  Navarretia capillaris B. Castro; L. P. Janeway 1999-8-1 1021 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  CHSC27908  Navarretia capillaris M. S. Taylor 1978-7-19 1768 Butte On e side of Upper Scotts John Rd ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC116984  Navarretia divaricata subsp. vividior Lowell Ahart 2016-6-4 20938 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  POM74736  Navarretia filicaulis C. C. Bruce 1898-05 2432 Butte [No locality information provided] Comment
  CHSC36713  Navarretia heterandra D. H. Ikeda 1980-5-8 346 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pool. Comment
  CHSC116720  Navarretia intertexta Lowell Ahart 2016-5-24 20864 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  UC221749  Navarretia intertexta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2080 Butte near Chico Comment
  JEPS110190  Navarretia intertexta subsp. intertexta Lowell Ahart 2006-7-16 13003 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  JEPS94306  Navarretia leptalea subsp. bicolor Lowell Ahart 1997-8-1 7781 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 Comment
  CHSC23095  Navarretia leucocephala Robert A. Schlising 1963-5-3 2547 Butte Sierra Nevada foothills. 12.2 miles N of intersection of Hwy 20 and Alt. 40; along roadside of Alt. 40; edge of field. Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  SEINET10496830  Navarretia leucocephala Mary Susan Taylor 1976-3-23 Taylor 1032 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  SEINET12326950  Navarretia leucocephala Unknown 1982-1 19 Butte ca 16 km N of Chico, 1.5 km W of Hwy 99, 50 m N of Broyles Rd Comment
  UCSB34436  Navarretia leucocephala Haller, John; Vivrette, Nancy 1980-4-28 Butte Cherokee Road Comment
  UC702921  Navarretia leucocephala subsp. minima Lewis S. Rose 1939-6-5 39196 Butte Honcut 30 Comment
  CHSC59119  Navarretia pubescens L. P. Janeway; B. Castro 1992-5-9 4166 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. 79 Comment
  JEPS107894  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  CHSC64123  Navarretia viscidula subsp. purpurea B. Castro; L. P. Janeway 1988-6-5 262 Butte On slope above Little Chico Ck. 243 Comment
  NY337171  Nemophila fallax Mrs. C. C. Bruce 2037 Butte Comment
  UC1292078  Nemophila heterophylla A. A. Heller 1926-3-24 13913 Butte along Chico Creek about 4 mi e Chico; e of Chico, Chico Creek Comment
  RSA32941  Nemophila heterophylla A. A. Heller 1937-5-31 s.n. Butte Yankee Hill Comment
  UC24189  Nemophila heterophylla Winifred Paine 1902-3-29 Butte Chico Comment
  UC398702  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Creek; near Clear Creek Comment
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  CHSC39096  Nemophila spatulata R. A. Schlising 1983-8-27 4451 Butte N part of county, at Coon Hollow. In small meadow. 1706 Comment
  CHSC27154  Nephrolepis cordifolia M. MacArthur 1968-6-13 324 Butte SE yard of Bldg. V. CSUC campus. 60 Comment
  CDA42978  Nicotiana acuminata var. multiflora L. Ahart 2013-11-18 19279 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. Comment
  UCD110203  Notholithocarpus densiflorus B. F. Smith 1965-10-18 60 Butte 3/4 mile east-northeast of Woodleaf. 1021 Comment
  UCD160271  Nymphaea odorata Chuck Hughes 2014-8-6 407 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  UC143374  Odontostomum hartwegii Mrs. R. M. Austin May 1896 837 Butte Chico Comment
  UC398696  Odontostomum hartwegii A. A. Heller 1926-4-28 13933 Butte 4 mi. n. Chico (on Richardson Springs rd.) Comment
  POM110462  Odontostomum hartwegii C. C. Bruce 1898-05 1838 Butte Unspecified. Comment
  SEINET10905074  Odontostomum hartwegii Mary Susan Taylor 1986-5-6 Taylor 5625 Butte Butte County; Upper Bidwell Park, Chico, in open Valley Grassland between Horseshoe Lake and Omicron Enclosure. With Vern Oswald and Lowell Ahart. 200 ft. 229 Comment
  CHSC6625  Oenothera M. MacArthur 1968-6-17 319 Butte NE side of Building T, Chico State College campus. 60 Comment
  CHSC105264  Olea europaea Lowell Ahart 2010-6-20 16817 Butte On the south side of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. 47 Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  RSA0123821  Opuntia polyacantha var. polyacantha Lyman Benson, Robert L. Benson 1961-8-31 16137 Butte 13 miles west of Arco. Snake River drainage area. 1524 Comment
  CHSC41252  Oreostemma alpigenum var. andersonii S. C. Morey 1983-7-21 472 Butte Cherry Hill Meadow. On N side of Humboldt Ridge, ca. 3.2 mi E of Butte Meadows. 1414 Comment
  SD5378  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 Butte Jonesville 1550 Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET6225233  Orthocarpus attenuatus L. S. Rose 1967-1 67055 Butte Oroville Comment
  POM15663  Orthocarpus erianthus E. B. Copeland 1902-4-10 3036 Butte Chico. Comment
  POM197062  Orthocarpus purpurascens H. F. Copeland 1929-5-4 20 Butte Near Chico. Comment
  SEINET10549735  Orthocarpus pusillus Mary Susan Taylor 1981-5-6 Taylor 3623 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
  RSA289967  Ottelia alismoides C. E. Turner 1977-9-8 541 Butte Lattemore portion of California Rice Experiment Station, between Biggs and Richvale. Comment
  CHSC27254  Oxalis corniculata P. Moyer 1972-3-4 100 Butte CSUC campus. On lawn at 1st and Hazel. 60 Comment
  CHSC31456  Oxalis corniculata L. Ahart 1980-10-27 2689 Butte Near the garden area near our home, Peter Ahart Ranch, Honcut. 50 Comment
  JEPS43151  Oxalis corniculata Mrs. R. M. Austin May 1896 204 Butte e Chico (Butte Creek) Comment
  CHSC108975  Oxalis pes-caprae Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17808 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  SEINET10454540  Oxypolis occidentalis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4193 Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  CHSC40489  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 883 Comment
  CAS-BOT-BC334336  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5088 Butte 100 yards S of the road to the Forbestown Res., S of the Forbestown Ditch, about 2.5 miles NE of Forbestown 883 Comment
  CDA32009  Panicum acuminatum var. acuminatum L. Ahart 2009-6-3 15832 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 Comment
  UC768483  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC111736  Panicum acuminatum var. fasciculatum Lowell Ahart 2012-6-21 18206 Butte About 200 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC253701  Panicum capillare Ira L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles W of Chico Comment
  UCD89813  Panicum capillare subsp. hillmanii W. H. McHenry 1969-11-10 s.n. Butte Durham. Comment
  UC177007  Parvisedum pumilum Mrs. R. M. Austin Butte Butte County Comment
  UC830990  Parvisedum pumilum A. A. Heller 1914-4-27 11329 Butte along Chico-Oroville Road on the lava plains 6 mi from Chico; Chico-Oroville Road Comment
  SD34487  Paspalum dilatatum A. A Beetle 1941-6-27 2894 Butte 4 mi. N of Gridley Comment
  CHSC2170  Paspalum distichum D. Bower 1953-7-9 Butte 1A Llano Seco. 30 Comment
  CAS-BOT-BC202814  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville 853 Comment
  CHSC33892  Paxistima myrsinites M. S. Taylor; L. Hanson 1981-5-12 3689 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  JEPS119580  Pectocarya penicillata Lowell Ahart 2012-4-17 17881 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
  NY68338  Pedicularis A. A. Heller 1914-7-23 11609 Butte Chico Meadows. 1219.2 Comment
  CHSC64224  Pedicularis attollens S. C. Morey 1983-7-23 583 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 430 Comment
  UC600441  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  CHSC90095  Pedicularis densiflora Rebecca L. Hill 1990-4-21 18 Butte Ca. 2 mi e on Humboldt Rd., ca. 50 yds on s side of road. Ca. 2.5 mi sw of Butte Meadows and ca. 27 mi ne of Chico. 1310 Comment
  SD4775  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville, in dry woods 1550 Comment
  UC171556  Pedicularis semibarbata Mrs. R. M. Austin July 1896 110 Butte Colby 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-BC67554  Pellaea mucronata E. B. Copeland 1899-4-1 s.n. Butte Chico 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
  CHSC39309  Pellaea mucronata Lowell Ahart 1983-6-26 4115 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET10470235  Pellaea mucronata Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4855 Butte Serpentine Point, west of Yankee Hill. Comment
  UC600438  Penstemon deustus var. deustus H. F. Copeland 1931-6-11 Butte Butte Creek Canyon betw Scotchjohn and Willow Crks (Jonesville); Butte Creek Canyon btw Scotchjohn and Willow Crks, Jonesvill Comment
  HSC66346  Penstemon gracilentus M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3209 Butte Humboldt Peak, on E side 2155 Comment
  CHSC51929  Penstemon heterophyllus var. purdyi Cathy Young 1988-4-24 13 Butte Ca. 5.5 mi NE of Chico, 50 yds SE of Hwy 32. 256 Comment
  RSA0045598  Penstemon laetus subsp. leptosepalus Lowell Ahart 2011-7-9 17570 Butte About 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC1869  Penstemon laetus var. leptosepalus E. Walker 1932-6-13 Butte Magalia. 731 Comment
  CHSC44710  Penstemon laetus var. leptosepalus R. Banchero 1980-6-6 204 Butte The southern jct of Bald Rock Rd and Zink Rd. 705 Comment
  POM252808  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte Along the Feather River Highway on roadside banks, 25 miles from Oroville. Comment
  RSA34041  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 miles from Oroville on Feather River Hwy. Comment
  SD4632  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville, pine and fir woods 1550 Comment
  NY604516  Penstemon laetus var. leptosepalus F. W. Pennell 1940-6-5 25682 Butte Route 24, along Feather River, above Oroville in Lassen National Forest. 640.1 Comment
  CHSC11885  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville. 1650 Comment
  CHSC99580  Penstemon neotericus L. P. Janeway 2008-6-15 9411 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. 1417 Comment
  UC426951  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte above Jonesville; above Jonesville 1900 Comment
  CAS-BOT-BC239449  Penstemon rydbergii var. oreocharis Lyman Benson 1932-7-28 3965 Butte First summit, Oroville-Quincy, Sierra Nevada Mt. Range, Feather River 1828 Comment
  NY651290  Penstemon rydbergii var. oreocharis A. A. Heller 1928-7-10 14652 Butte At Butte Meadows Comment
  CHSC28896  Pentagramma triangularis M. S. Taylor 1980-3-1 2339 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC30817  Pentagramma triangularis M. S. Taylor; J. D. Jokerst 1980-4-18 2516 Butte W side of Humbug Rd, ca. 1 mi s of Nimshew. 609 Comment
  CAS-BOT-BC77089  Pentagramma triangularis subsp. triangularis R. A. Emmrich 1975-4-24 46 Butte Ca. 1/2 mi. E of Butte Creek and 1/4 mi. SE of Covered Bridge, 6 mi. ESE of Chico. 128 Comment
  CHSC90140  Pentagramma triangularis subsp. triangularis Roberta A. Boer 1980-4-25 18 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, about 2.0 mi east of Chico. 131 Comment
  SEINET10454544  Perideridia bacigalupii Lowell Ahart 1985-8-15 Ahart 5163 Butte In an area where serpentine is covered with shallow red rocky soil, 50 yards south of the road to the Forbestown, Res., about 2 1/2 miles north-east of Forbestown. Comment
  POM82590  Perideridia bolanderi subsp. involucrata C. C. Bruce 1897-06 2047 Butte [no locality information provided] Comment
  CDA14087  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13971 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC39083  Persicaria amphibia R. A. Schlising 1981-9-23 4205 Butte At crossing of Little Butte Creek by Seven Mile Lane, 1 mi s of junction with Nelson West Road. Comment
  CHSC55252  Persicaria hydropiper Lowell Ahart 1991-9-14 6714 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CAS-BOT-BC413701  Persicaria hydropiper John Thomas Howell 1959-9-20 34644 Butte Eastern outskirts of Oroville 60 Comment
  CHSC34055  Persicaria lapathifolia L. Ahart; M. S. Taylor 1981-8-15 3041 Butte On drying bottom of north side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC51273  Persicaria lapathifolia Lowell Ahart 1990-10-3 6613 Butte On the north side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC76004  Persicaria lapathifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8174 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
  CHSC21144  Persicaria maculosa M. S. Taylor 1975-10-3 924 Butte Abundant in mud on Big Chico Creek, under bridge over River Rd, ca. 10 mi w of Chico. 36 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
  CHSC109071  Petrorhagia dubia Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17907 Butte On the north side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET11933238  Petrorhagia dubia Unknown 1984-1 14 Butte ca 0.75 mi NE of Centinnial and Manzanita avenues 70 Comment
  CHSC103733  Phacelia cicutaria var. cicutaria Lowell Ahart 2010-5-16 16698 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 608 Comment
  CHSC101318  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC36081  Phacelia mutabilis R. A. Schlising 1981-8-4 4188 Butte Top (n end) of Scotts John Road, 3.1 mi n of its jct with main road to Jonesville. Comment
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville Comment
  CHSC58918  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte Around large rocks, near cliffs, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC54302  Phacelia purpusii Vernon H. Oswald; Lowell Ahart 1991-6-5 4649 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  SEINET12765109  Phacelia purpusii Lowell Ahart 2006-7-16 12962 Butte Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows.; 0 1436 Comment
  POM73566  Phacelia purpusii C. C. Bruce 1898-05 2388 Butte Mountains. Comment
  CHSC36521  Phalaris lemmonii L. Ahart 1982-5-10 3431 Butte On bottom of a vernal pool in the fields, Peter Ahart Ranch, Honcut, ca. 2.5 mi n and 1/4 mi e of Honcut. 50 Comment
  CAS-BOT-BC265954  Phalaris minor Lowell Ahart 1981-5-16 2802 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley, Sierra Nevada 35 Comment
  CHSC46276  Phalaris minor Vernon Oswald 1989-5-1 3752 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), at the n gate on Biggs-Afton Hwy just e of Butte Creek. Roadside. 18 Comment
  UCD89391  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson. Comment
  SEINET10716718  Phalaris paradoxa A. Arthur Heller 1914-5-13 Heller 11391 Butte Nelson Comment
  CHSC27162  Philadelphus grandiflorus M. MacArthur 1968-6-17 306 Butte SE yard of Building U n Chico State College campus. 60 Comment
  CHSC10791  Philadelphus lewisii Lowell Ahart 1966-5-22 Butte Near Paradise. 91 Comment
  RSA0057768  Philadelphus lewisii A. A. Heller 1915-5-17 11875 Butte Canyon of Chico Creek 5 miles east of Chico. Comment
  CAS-BOT-BC250867  Phleum pratense Lowell Ahart 1985-7-24 5156 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 1150 Comment
  CHSC28545  Phleum pratense M. S. Taylor 1978-7-18 1720 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, s of Jonesville. 1524 Comment
  POM282388  Phlox diffusa subsp. diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  CHSC115491  Phlox speciosa subsp. occidentalis L. P. Janeway 2015-3-16 11638 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CAS-BOT-BC135097  Phoradendron juniperinum Flower Shaw 1928-4-1 s.n. Butte Cherokee School Comment
  CAS-BOT-BC141119  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 1983-3-27 991 Butte Peter Ahart Ranch, about 1 1/2 miles N and 1 mile E of Honcut 50 Comment
  CAS-BOT-BC141249  Phoradendron serotinum subsp. tomentosum Lowell Ahart 1980-9-10 2621 Butte Little Bald Rock 335 Comment
  CHSC31465  Phoradendron villosum M. S. Taylor 1981-1-5 3373 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC3605  Phoradendron villosum Gerry Carrauthers 1966-2-14 6 Butte Far end of Bidwell Park. 8 mi. N. E. of city of Chico. Comment
  CHSC75550  Phoradendron villosum G. F. Hrusa; T. D. Wilfred 1997-5-7 13733 Butte Serpentine SE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  UC203612  Phoradendron villosum A. A. Heller 1914-1-28 11157 Butte 6 mi. e. Chico (on volcanic uplands near Hog Springs) Comment
  CHSC110945  Photinia serratifolia L. P. Janeway 2013-3-25 11087 Butte Sacramento Valley. South side of Feather River through Oroville, about 110 m northwest of Veterans Hall; north-slope of the levee between the bike trail and the water. 46 Comment
  CHSC49448  Phyla nodiflora var. nodiflora Vernon Oswald 1987-7-30 3172 Butte Rancho Arroyo Chico. Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  CHSC11342  Physalis philadelphica Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC140563  Physocarpus capitatus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET11892048  Physocarpus capitatus Unknown 1981-1 2921 Butte ca.1/2mi W of Oroville Forbestown Rd, on S side of Black Bart Rd 640 Comment
  CHSC52770  Phytolacca americana L. P. Janeway 1990-5-25 3691 Butte Campus of California State University, Chico; near Big Chico Creek along path from Holt Hall to the bridge across the creek towards Sylvester's Cafe-by-the-Creek. 57 Comment
  CAS-BOT-BC434419  Phytolacca americana Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  SEINET10537237  Phytolacca americana Lowell Ahart, Vernon H. Oswald 1985-7-24 Ahart 5159 Butte Along a small stream, along La Porte Road, about 4 miles north-east of Bangor. Comment
  SEINET10474325  Picris echioides Mary Susan Taylor 1977-10-10 Taylor 1525 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  UCSC009440  Picris echioides Lowell Ahart 1995-10-4 7677 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 37 Comment
  CHSC103940  Pilularia americana Lowell Ahart 2010-5-22 16712 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC6641  Pinus M. MacArthur 1968-6-13 366 Butte Chico State College campus. 60 Comment
  CHSC54351  Piperia michaelii Lowell Ahart 1991-5-12 6653 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 48 Comment
  CHSC49562  Piptatherum miliaceum Vernon Oswald 1985-6-12 1829 Butte Bidwell State Park slightly s of the Washout on River Rd. On a bank of the river. 38 Comment
  UC2026873  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south parking area, Lower Bidwell Park, Chico. Comment
  SEINET10899934  Pityrogramma triangularis var. semipallida Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5514 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  JEPS127089  Plagiobothrys Lowell Ahart 2016-4-14 20742 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  SEINET10546921  Plagiobothrys Mary Susan Taylor Taylor 987 Butte Bidwell Park, Chico. Comment
  SEINET10964627  Plagiobothrys Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5391 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CHSC90485  Plagiobothrys austiniae Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11664 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  RSA32945  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte Near the Chico Airport. 91 Comment
  HSC43355  Plagiobothrys bracteatus Maralyn O'Meara 1974-4-20 268 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  SEINET10781184  Plagiobothrys fulvus Lowell Ahart 2010-5-16 Ahart 16684 Butte T20N, R4E, northeast 1/4 Section 20. Normal size plants, on dry to damp soil, open grassland, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. Basalt Grassland. 372 Comment
  UC180154  Plagiobothrys fulvus A. A. Heller 1913-4-7 10726 Butte hills 6 mi n Oroville Comment
  CHSC29980  Plagiobothrys glyptocarpus Lowell Ahart 1980-5-12 2248 Butte Peter Ahart Ranch, ca 1 mi N and 2.25 mi E of Honcut; in small wash in pasture. 50 Comment
  CHSC47999  Plagiobothrys glyptocarpus var. glyptocarpus Vernon Oswald 1986-4-14 1068 Butte Upper Bidwell Park, Chico, on the edge of the first seep s of Upper Park Rd. and w of Parking Area O. 182 Comment
  CAS-BOT-BC228258  Plagiobothrys hispidulus H. F. Copeland 1938-7-4 s.n. Butte Jonesville Comment
  CHSC101674  Plagiobothrys nothofulvus Lowell Ahart 2009-4-26 15645 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC24974  Plagiobothrys nothofulvus J. Cox 1976-3-10 43 Butte N. Table Mt., ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  RSA754790  Plagiobothrys nothofulvus L. Ahart 2009-4-26 15645 Butte Sides of Guardians Trail, about 200 yards SW of Pine Trail, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC35058  Plagiobothrys scriptus R. Schlising; R. Banchero 1981-3-7 3996 Butte S of Chico, 0.2 mi N of jct with Neal Road, along Chico/Oroville Hwy. 54 Comment
  CHSC46770  Plagiobothrys shastensis Lowell Ahart 1980-4-30 2126 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road. 295 Comment
  UC763056  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  CHSC43551  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1977-3-29 1234 Butte In the borrow area about 5 miles south-west of Oroville. 30 Comment
  CHSC99476  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2008-6-13 14824 Butte Depression in a small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS123887  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-5-5 20137 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  CHSC29274  Plagiobothrys tenellus R. A. Schlising 1980-4-19 3567 Butte North of village of Feather Falls, along trail to Feather Falls (on Fall River) from ne. 792 Comment
  CHSC38279  Plagiobothrys tenellus Vernon Oswald 1983-3-6 122 Butte Upper Bidwell Park, Chico, near the top of the north slope 0.2 mi e of the end of the North Rim Trail. 390 Comment
  RSA32734  Plagiobothrys tenellus A. A. Heller 1938-4-14 15037 Butte Between Pentz and Cherokee. Comment
  CHSC82434  Plantago coronopus Lowell Ahart 2002-5-7 9642 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  JEPS118250  Plantago coronopus Lowell Ahart 2011-5-1 17343 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville 42 Comment
  UCD124395  Plantago coronopus Steven C. Joslin 1978-4-18 2 Butte ca. 11 miles north of Chico on Highway 99 at intersection with Broyles Road. 60 Comment
  CHSC70853  Plantago elongata Lowell Ahart 1988-4-8 7949 Butte West of the dirt road, 1/10 mile north of the Thermalito Diversion Dam, east of the Thermalito Diversion Pool, 1/4 mile northeast of Oroville. 67 Comment
  CHSC28636  Plantago erecta M. S. Taylor 1979-3-31 1974 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 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
  CHSC34412  Plantago erecta R. M. Winchell 1980-4-17 1 Butte Covered Bridge along Butte Creek. Comment
  SEINET12328379  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  SEINET12332634  Plantago erecta M. S. Taylor 1981-1 3549 Butte S side of Concow Rd, on ridge, ca 0.5 mi S of its junction with Ponderosa Way (rim road), ca 2 mi N 853 Comment
  CHSC1221  Plantago lanceolata V. Holt 1947-6-1 Butte Magalia. 731 Comment
  CHSC39524  Plantago lanceolata Lowell Ahart 1983-6-21 4064 Butte Fround growing along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy Highway, 1 1/4 miles south of the Berry Creek School, northeast of Oroville. Section 5. 400 Comment
  CHSC88146  Plantago lanceolata Lowell Ahart 2004-7-23 11303 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  JEPS115884  Plantago major Lowell Ahart 2009-6-19 15920 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC5991  Plantago major var. scopulorum M. MacArthur 1968-6-12 159 Butte In lawn on SW side of Life Science bld., Chico State College campus. 60 Comment
  CHSC80670  Plantago virginica Lowell Ahart 2001-6-1 8745 Butte On the margin of 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
  UC429335  Platanthera sparsiflora Mrs. R. M. Austin Jul 1896 4 Butte near Colby; Butte Creek Comment
  CHSC20549  Platanus racemosa M. S. Taylor 1975-7-4 829 Butte Along Big Chico Creek, Five Mile, Upper Bidwell Park, Chico. 76 Comment
  CHSC38587  Platanus racemosa Vernon Oswald 1983-7-13 867 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Growing near the creek in riparian woodland. 85 Comment
  CHSC45344  Platanus racemosa Vernon Oswald 1987-4-20 2335 Butte Butte Creek Reserve on the s side of the creek ne of the Skyway. Twig from a large tree growing on the edge of a dredger pond. 91 Comment
  UC726298  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  CHSC83967  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC9340  Poa annua B. Anthony 1968-4-1 403 Butte Lawn at Vets Village, Chico State College. Comment
  JEPS116032  Poa annua Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CDA34180  Poa bulbosa L. Ahart 2009-4-22 15598 Butte South side of Guardian s Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CAS-BOT-BC255066  Poa compressa Lowell Ahart 1983-9-17 4438 Butte Ca. 0.25 mile SE of Stirling City 1100 Comment
  CHSC54311  Poa howellii Vernon H. Oswald; Lowell Ahart 1991-6-5 4643 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek on the west side of Hwy 32, ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. Roadside banks. 670 Comment
  CAS-BOT-BC255786  Poa infirma A. A. Heller 1914-3-28 11243 Butte Chico in the Sacramento Valley Comment
  CHSC61548  Poa palustris Lowell Ahart 1993-7-6 7053 A Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  RSA700237  Poa pratensis L. Ahart 2004-7-23 11304 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, bout 1.5 miles (air) west of Philbrook Reservoir Dam., About 3 3/4 miles (air) southeast of Butte meadows. 1457 Comment
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  CDA2374  Poa pratensis subsp. pratensis L. Ahart 2004-7-23 11304 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  CHSC31931  Poa pringlei J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1034 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  RSA712924  Poa secunda L. Ahart 2006-5-10 12615 Butte 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 2.5 miles (air) southwest of Pulga. 355 Comment
  CHSC8603  Poa secunda subsp. secunda M. Banning 1969-3-22 20 Butte S. edge of Chico Golf Course. 70 Comment
  UCD91615  Poa secunda subsp. secunda A. A. Heller 1915-6-10 11956 Butte Little Summit in the Sierra Nevada. 1432 Comment
  UCD91621  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 miles N of Chico. 64 Comment
  SBBG128019  Poa tenerrima L. Ahart 2010-5-14 16662 Butte Disc Golf Area, ca. 200 yards W of the entrance to the Disc Golf Area, W of Hwy 32, Upper Bidwell Park, ca. 5 mi (air) NE of Chico 350 Comment
  SEINET10508318  Poa tenerrima Lowell Ahart 1983-4-10 Ahart 3930 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  UC1988916  Pogogyne douglasii Robert F. Hoover 1937-5-19 2243 Butte ten miles northwest of Chico Comment
  CHSC42197  Pogogyne zizyphoroides John E. Hunter 1986-4-12 52 Butte Ca 1 km e of Chico, 50 m s of Hwy 32. 75 Comment
  CDA25320  Polanisia dodecandra subsp. trachysperma L. Ahart 2002-9-27 9938 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  UC600676  Polemonium pulcherrimum E. B. Copeland July, 1930 Butte Big Summit Jonesville, Big Summit 2200 Comment
  CHSC45569  Polycarpon tetraphyllum John T. Howell 1974-5-3 50334 Butte Sidewalk east of Wells Fargo Bank, at the Shell Gas Station, in Gridley. 30 Comment
  NY406770  Polygala cornuta A. A. Heller 1914-7-24 11624 Butte Forest Ranch 731.5 Comment
  CAS-BOT-BC167548  Polygala cornuta var. cornuta Lowell Ahart 1988-6-15 6042 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  UC177567  Polygala cornuta var. cornuta H. M. Hall 1914-7-31 9821 Butte Humboldt Road 1066 Comment
  CHSC31216  Polygonum aviculare M. S. Taylor 1980-10-6 3359 Butte N side of Hwy 70 in granitic gravel, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CAS-BOT-BC109138  Polygonum bidwelliae David D. Keck 1933-5-31 2470 Butte Bridge crossin Mud Creek, 2.9 miles west of Richardson Springs. Comment
  RSA3842  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise Comment
  CAS-BOT-BC109149  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte Road to Butte Meadows, 3.2 miles northeast from Highway 32. 1341 Comment
  CAS-BOT-BC109154  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit near Butte Meadows. 1463 Comment
  CHSC102160  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC63716  Polygonum californicum Lowell Ahart 1994-10-10 7562 Butte On the banks of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  SEINET10479630  Polygonum californicum Mary Susan Taylor 1975-9-19 Taylor 919 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CDA2775  Polygonum persicaria L. Ahart 1999-9-21 8270 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC58947  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 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
  UC1562375  Polygonum sawatchense subsp. oblivium Vernon Oswald and Lowell Ahart 1990-7-5 4350 Butte 0.3 mi (odometer) w Humbug Rd (along a logging road just s of Cold Springs (near Humbug Summit) ca 4 mi e of Jonesville); Willow Creek 1950 Comment
  CAS-BOT-BC71860  Polypodium californicum Sam M. Grossberg 1978-4-21 14 Butte ca. 0.6 mi. WNW of Highway 32, 9.2 mi NE of Chico 350 Comment
  SEINET10530405  Polypodium californicum Mary Susan Taylor 1979-12-25 Taylor 2309 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  JEPS104148  Polypodium calirhiza Lowell Ahart 2003-4-10 10077 Butte Face of basalt cliff, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 334 Comment
  JEPS110221  Polypodium calirhiza Lowell Ahart 2006-9-28 13360 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 480 Comment
  UC474205  Polypodium calirhiza H. F. Copeland 1918-2-3 Butte near Chico (Iron Canyon) Comment
  UC122769  Polypodium calirhiza Mrs. R. M. Austin Mar, 1896 240 Butte Little Chico Canyon Comment
  CAS-BOT-BC232967  Polypogon australis A. A. Heller 1914-5-19 11419 Butte Hills 8 miles N of Oroville Comment
  SEINET4344592 Image available Polypogon australis Unknown 2009-6-19 15927 Butte T23N, R2E, near center, upper half of Section 35. About 30 yards south of the fence and about 100 yards east of Ten Mile Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  CAS-BOT-BC233062  Polypogon interruptus A. A. Beetle 1941-6-27 1745 Butte Near Lomo, 13 miles W of Chester, near road to Chico Creek Comment
  JEPS124334  Polypogon interruptus Lowell Ahart 2015-10-16 20559 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET10602418  Polypogon interruptus A. Arthur Heller 1914-5-19 Heller 11419 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC233210  Polypogon maritimus Lowell Ahart 1983-6-26 4158 Butte Along Ponderosa Way, ca. 2.5 miles E of where Ponderosa Way crosses the E Fork of Canyon Creek, ca. 15.5 miles NE of Oroville 600 Comment
  CHSC104857  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico. 197 Comment
  CHSC23408  Polystichum imbricans M. S. Taylor 1976-3-6 1013 Butte At Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  SEINET3874651  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 Butte Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville.; 0 396 Comment
  CAS-BOT-BC72267  Polystichum imbricans subsp. curtum M. S. Taylor 1980-3-19 2388 A Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2.5 mi n of its jct with Forbestown Rd, ca. 18 mi n of Oroville 396 Comment
  CHSC94838  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House. 609 Comment
  CHSC20257  Populus fremontii G. S. Ellmore 1972-4-28 175 Butte Big Chico Creek ca. 1.2 km. E of Five Mile Pool. Comment
  CHSC108758  Populus fremontii subsp. fremontii L. P. Janeway 2011-5-9 10254 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water. 42 Comment
  CAS-BOT-BC452109  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte Along the Biggs Princeton Highway, under P. G. & E. power lines, about 1 mile west of Biggs 28 Comment
  SEINET8472199 Image available Potamogeton foliosus subsp. foliosus N. E. Brown, Charles C. Deam 1896-11-15 Butte Near Clear Creek Comment
  CAS-BOT-BC453700  Potamogeton illinoensis Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 50 Comment
  CHSC55066  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte In a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  JEPS95859  Potamogeton pusillus var. pusillus Lowell Ahart 1999-8-22 8190 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
  CHSC99668  Potamogeton pusillus var. tenuissimus R. A. Schlising; A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake. Growing totally submerged under about 2 m of water on a muddy ridge on rocky lake bottom. 1889 Comment
  CHSC44165  Potentilla bruceae V. Oswald; L. Ahart 1988-7-26 3619 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC105538  Potentilla flabellifolia Lowell Ahart 2010-9-28 17252 Butte On wet humus, south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC46228  Potentilla glandulosa Pauleen Broyles 1987-6-26 1063 Butte Ca 2 km s. of Inskip on w. side of Skyway, in meadow. 1400 Comment
  SEINET10871270  Potentilla glandulosa subsp. reflexa Mary Susan Taylor 1976-5-5 Taylor 1115 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC105822  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
  UCD122113  Proboscidea louisianica subsp. louisianica A. A. Heller 1914-5-30 11467 Butte Chico-Hamilton, 6 miles from Chico. Comment
  UC139772  Prunella vulgaris var. lanceolata Mrs. R. M. Austin July 1896 566 Butte Colby Comment
  CHSC110109  Prunus cerasifera L. P. Janeway 2012-3-21 10800 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  RSA715830  Prunus emarginata L. P. Janeway 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National forest; on Sawmill Peak, 560 m E-SE of the lookout tower; 2.4 km E of Magalia. Edge of old roadway. 966 Comment
  UC860392  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon e of Chico; Stilson Canyon Comment
  CHSC28977  Pseudobahia heermannii R. A. Schlising 1980-3-17 3515 Butte E of Chico and SW of Paradise, along Skyway; on cliff edges above Butte Creek. 213 Comment
  CHSC113980  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CAS-BOT-BC357001  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  CAS-BOT-BC357235  Pseudognaphalium microcephalum Lowell Ahart 1988-9-4 6176 Butte A little north of a branch of Last Chance Creek, about 1 mile west and a little north of Bald Mountain 1005 Comment
  CHSC26657  Pseudognaphalium thermale M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1500 Butte On e side of the Skyway, in Inskip. 1615 Comment
  CHSC38353  Pseudognaphalium thermale Vernon Oswald 1983-8-10 975 Butte Upper Bidwell Park, Chico, on the n rim overlooking Sycamore Creek Canyon ca. 2200 ft w of the turn-around at the e end of the North Rim Trail. 390 Comment
  CHSC32154  Pseudotsuga menziesii var. menziesii L. Ahart 1975-4-1 736 Butte Along edge of rd; ca. 2 mi s of Ponderosa Dam. 396 Comment
  SEINET10475095  Psilocarphus brevissimus Mary Susan Taylor 1978-5-7 Taylor 1614 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC60961  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte On the bottom of a vernal pool, east of the deep wash, Peter Ahart Ranch, about 1 3/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48192  Psilocarphus tenellus var. tenellus Vernon Oswald 1987-4-15 2328 Butte Butte Creek Preserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  RSA0047080  Ptelea crenulata L. Ahart 2012-4-30 17931 Butte Both sides of South Rim Trail, about 0.5 miles southwest of the old homestead, pond, and Ten Mile House Road, about 0.75 miles west of Highway 32, about 8 miles northeast Chico, south part of Upper Bidwell Park. 256 Comment
  UC474261  Pterospora andromedea H. F. Copeland 1930-7-21 Butte Butte Creek Jonesville Comment
  CHSC47637  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Near the dirt road, about 3/4 mile west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley. 30 Comment
  CHSC100487  Pyracantha fortuneana Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC44422  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte North-west of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  SD3521  Pyrola asarifolia subsp. asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville, shady places near streams 1500 Comment
  SEINET8399930  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville. 1600 Comment
  CHSC43724  Pyrola picta Vernon Oswald; Lowell Ahart 1987-7-5 3187 Butte N flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  UC177572  Pyrola picta H. M. Hall 1914-7-23 9779 Butte near Jonesville 1584 Comment
  CHSC110114  Pyrus calleryana L. P. Janeway 2012-3-6 10791 Butte Sacramento Valley. Southern edge of Chico; fenceline along west side of Hwy 99 just south of Estates Drive. 65 Comment
  CHSC78163  Pyrus communis Lowell Ahart 2000-5-17 8360 Butte On the south margin of the Thermalito Afterbay, on the north side of the poor dirt road, about 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  UC2026889  Quercus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18121 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking Area, Lower Bidwell Park, Chico. Comment
  JEPS46211  Quercus X morehus W. I. Follett 1934-7-8 Butte Bidwell Bar Comment
  CHSC96810  Quercus chrysolepis var. chrysolepis Lowell Ahart 2007-4-30 13702 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  UC1135617  Quercus garryana var. breweri J. E. Sowder, C. G. Albertus 1933-6-28 98 Butte 2 mi e Keefer's Old Mill; Chico Quad. 365 Comment
  JEPS107327  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  UC141898  Quercus lobata Mrs. R. M. Austin Apr 1896 774 Butte near Chico Comment
  UC1562480  Ranunculus alismifolius var. alismifolius Vernon Oswald and Lowell Ahart 1990-5-29 4268 Butte e side of Humbug Rd ca 3.5 air mi ese Jonesville; Butte Creek House Meadow 1777 Comment
  CHSC48695  Ranunculus aquatilis var. aquatilis Vernon Oswald; Lowell Ahart 1987-7-1 3072 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. In the largest lake. 1935 Comment
  CAS-BOT-BC379223  Ranunculus aquatilis var. aquatilis Lowell Ahart 1970-4-4 s.n. Butte Honcut, Peter Ahart Ranch 150 Comment
  CHSC20721  Ranunculus aquatilis var. capillaceus M. S. Taylor 1975-8-31 890 Butte On edge of Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC30380  Ranunculus aquatilis var. capillaceus J. D. Jokerst 1979-3-20 1148 Butte Top of North Table Mt., ca. .5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  CAS-BOT-BC378986  Ranunculus arvensis Lowell Ahart 1980-5-10 2234 Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC82260  Ranunculus bonariensis var. trisepalus Lowell Ahart 2002-4-24 9529 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  SEINET3450184  Ranunculus canus Unknown 2003-5-28 10228 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  UC204953  Ranunculus hebecarpus A. A. Heller 1914-3-26 11232 Butte Canyon of Big Chico Creek 76 Comment
  UCD96215  Ranunculus hystriculus T. M. S. Taylor; Devine, M. Merryman 1981-2-11 3382 Butte 50 feet east of Lumpkin Road, on the north slope abvoe Macabes Creek, 2 miles N of junction of Lumpkin Road and Oroville-Quincy Highway (162), 13 miles NE of oroville. 457 Comment
  CHSC46068  Ranunculus muricatus Kirsten Tarp 1983-5-31 286 Butte Nelson, in lawn in front of the Nelson Post Office. 36 Comment
  JEPS119711  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte About 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  POM99241  Ranunculus muricatus C. C. Bruce 1897-04 1890 Butte [No location data on label] Comment
  CHSC115493  Ranunculus occidentalis L. P. Janeway 2015-3-18 11642 Butte Northern High Sieerra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  JEPS110344  Ranunculus occidentalis Lowell Ahart 2006-7-16 12997 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  UC726242  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte on Feather River Hwy 20 mi from Oroville (summit of hwy) Comment
  UC827722  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte 20 mi from Oroville (Feather River Hwy at summit) Comment
  CHSC31209  Ranunculus occidentalis var. occidentalis M. S. Taylor 1980-4-1 2426 Butte On bluffs above Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CHSC31806  Ranunculus occidentalis var. occidentalis L. Ahart 1974-3-18 334 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS98680  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (Thermalito Afterbay, S side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC43545  Ranunculus sceleratus Lowell Ahart 1982-5-10 3432 Butte In our rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC44156  Ratibida columnifera Vernon Oswald 1988-7-22 3611 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the edge of the ranch road where it parallels Hwy 99. 56 Comment
  CAS-BOT-BC59888  Rhamnus ilicifolia P. Monnet 1913-3-1 683 Butte Feather River Canyon. Oroville. Comment
  CHSC38639  Rhamnus ilicifolia Vernon Oswald 1983-5-23 539 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. 500 ft e of Parking Area R (ca. 2.4 mi e of the power lines). Comment
  UC175332  Rhamnus purshiana A. A. Heller 1913-6-7 10821 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  UC726401  Rhamnus purshiana A. A. Heller 1919-5-17 13157 Butte near Stirling; Feather River 975 Comment
  UC80127  Rhamnus rubra Mrs. M. Austin Jun 1896 642 Butte n of Chico (Forest Ranch and mountains) Comment
  CHSC98893  Rhamnus tomentella subsp. tomentella L. P. Janeway 2007-10-8 9217 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north-northwest facing upper slope below North Rim Trail overlooking Sycamore Creek. 338 Comment
  RSA301134  Rhamnus tomentella subsp. tomentella D. C. Michener 1982-7-28 4137 Butte Foothill woodland on volcanic soils on both sides of 32, 8.3 miles NE of jct with 99 near Chico. Comment
  CAS-BOT-BC56641  Rhododendron occidentale L. P. Janeway 1995-6-28 4821 Butte Top of Watson Ridge at junction of Roads 21N24 and 21N25; about 1.5 mi west of Kenebeck Ridge 1249 Comment
  CAS-BOT-BC168127  Rhus aromatica Lowell Ahart 1983-4-10 3927 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC62409  Rhus aromatica B. Castro 1987-5-18 111 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive 457 Comment
  CHSC78317  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  LA205411  Ribes cereum E. B. Copeland; 1931-6-11 sn Butte Kirby's Meadow, Jonesville 1800.0 Comment
  UC478511  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte near Butte Creek; Jonesville 1550 Comment
  CHSC11904  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville. 1500 Comment
  SEINET10937201  Ribes roezlii Mary Susan Taylor 1976-4-4 Taylor 1054 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CAS-BOT-BC198962  Ribes roezlii var. roezlii A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico Comment
  LA205438  Ribes viscosissimum A. A. Heller; 1915-6-26 10232 Butte Sierra Nevada, summit above Jonesvillle 2133 Comment
  UC177588 Image available Ribes viscosissimum H. M. Hall 1914-7-27 9788 Butte Big Summit of Humboldt Road Sierra Nevada Mountains 2042 Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CAS-BOT-BC362957  Rigiopappus leptocladus A. A. Heller; H. E. Brown 1902-5-12 5540 Butte Grade between Clear Creek and Paradise Comment
  CAS-BOT-BC74455  Rorippa curvisiliqua Lowell Ahart 1977-7-10 s.n. Butte 1 mile west of Honcut. 35 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 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
  CHSC58261  Rorippa curvisiliqua var. orientalis Lowell Ahart 1992-3-21 6738 Butte Below the high water line of Lake Oroville, south of the Spillway Boat Launch Area, Lake Oroville. 243 Comment
  CHSC9136  Rorippa nasturtium-aquaticum Terril Wolt 1970-4-20 28 Butte Streams; ca. 4 mi. N.E. of Skyway, on W. side of Humbug Rd. Comment
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 Comment
  CHSC50655  Rorippa palustris var. hispida Lowell Ahart 1990-6-16 6516 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC113208  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-25 19396 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC75991  Rorippa palustris var. occidentalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8156 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
  SEINET10483501  Rosa californica Mary Susan Taylor 1975-7-4 Taylor 833 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  CHSC50112  Rosa canina Vernon Oswald 1990-5-8 4191 Butte Junction of Aquas Frias Rd and Afton Rd, west of Biggs. In an area of rice fields. 21 Comment
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Jun 19 2009
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  RSA718379  Rosa gymnocarpa L. Ahart 2006-6-24 12856 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  SEINET10483516  Rosa gymnocarpa Mary Susan Taylor 1980-9-12 Taylor 3333 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  JEPS117312  Rosa multiflora 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico 74 Comment
  RSA718384  Rosa pisocarpa L. Ahart 2006-6-24 12857 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  CDA26286  Rosa woodsii var. ultramontana L. Ahart 2005-7-13 12144 Butte About 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  CAS-BOT-BC274224  Rostraria cristata Lowell Ahart 1987-5-6 5557 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC113535  Rotala ramosior Lowell Ahart 2014-9-23 19866 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC43233  Rotala ramosior Lowell Ahart 1987-9-4 5879 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 mile seast of Honcut, about 12 miles south-east of Oroville. 67 Comment
  JEPS115598  Rubus discolor Lowell Ahart 2009-5-23 15771 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS98589  Rubus discolor Lowell Ahart 2000-6-29 8546 Butte In the north part of Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  RSA719540  Rubus discolor Michael A. Vincent, K. Levings 2006-7-29 12886 Butte NE of Chico along Rte 32. Comment
  CHSC115684  Rubus glaucifolius Emily Meigs Doe 2015-4-23 25 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Approx. 150 ft. east of Road 19N19, approx. 250 ft. NE of its intersection with Ponderosa Way. 731 Comment
  SEINET10970325  Rubus glaucifolius Mary Susan Taylor 1981-4-28 Taylor 3570 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
  CHSC64663  Rubus laciniatus H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 861 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Latitude on label says '39 degrees 45 minutes 78 seconds N'. 880 Comment
  CHSC48872  Rubus parviflorus Vernon Oswald 1984-5-23 1206 Butte Calif. Hwy 70 at Heinz Creek, 0.5 mi n-e of Poe Power House. Near the creek. 463 Comment
  POM183166  Rubus parviflorus var. bifarius H. F. Copeland 1930-7-26 1328 Butte Jonesville. 1677 Comment
  CHSC54432  Rudbeckia occidentalis var. occidentalis Vernon H. Oswald; Lowell Ahart 1991-7-15 4739 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Marble Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. On the east side of the creek just upstream from the bridge. 1051 Comment
  CHSC1354  Rumex acetosella P. Delaplane 1965-5-4 49 Butte Found at E. end of Lake concow on Concow Rd. 1219 Comment
  CHSC32114  Rumex acetosella L. Ahart 1977-5-2 1346 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  CHSC116294  Rumex conglomeratus Lowell Ahart 2015-10-16 20554 Butte On west side of Feather River, about half way of and east of ne Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CAS-BOT-BC421621  Rumex crispus Lowell Ahart 1982-5-29 3451 Butte Near the Peter Ahart Ranch, about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  CAS-BOT-BC433778  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge instead of Ponderosa Way. 550 Comment
  CHSC40787  Sagina apetala Lowell Ahart 1985-3-4 4842 Butte Along the edge of the curb, at the Palermo Post Office, Palermo. 40 Comment
  RSA0118700  Sagina decumbens subsp. occidentalis Lowell A. Ahart 2014-4-26 19410 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. 31 Comment
  CHSC112722  Sagina saginoides Lowell Ahart 2013-10-26 19211 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC113510  Sagina saginoides Lowell Ahart 2014-7-16 19680 Butte Northeast area of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC1141999  Sagina saginoides E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC37376  Sagittaria montevidensis subsp. calycina R. A. Schlising 1981-8-16 4193 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 9, along latter and across from Thermalito Afterbay. Comment
  SEINET10905440  Sagittaria montevidensis subsp. calycina Mary Susan Taylor 1978-7-22 Taylor 1852 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  UC463018  Salix eastwoodiae E. B. Copeland 1931-7-30 Butte Willow Creek Jonesville 1600 Comment
  UC478541  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte meadows by Butte Creek Jonesville (meadow below house) 1500 Comment
  CAS-BOT-BC107837  Salix gooddingii C. R. Ball 1916-6-15 2069 Butte On bank of Chico Creek, Chico Comment
  CAS-BOT-BC104076  Salix hindsiana Lowell Ahart 1984-6-8 4676 Butte along the dirt road about 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 144 Comment
  CHSC40542  Salix lasiolepis J. D. Jokerst; L. Ahart 1984-3-20 1947 Butte Along the edge of Black Bart Rd. 0.5 miles S of its junction with Forbestown Rd. Comment
  JEPS119606  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UC478538  Salix lemmonii E. B. Copeland 1931-6-11 313 Butte Kirby's Meadow Jonesville 1750 Comment
  UC600411  Salix ligulifolia E. B. Copeland 1931-6-18 Butte Jonesville 1550 Comment
  CAS-BOT-BC129486  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek Comment
  CAS-BOT-BC129506  Salix melanopsis C. C., Mrs. Bruce 1897-6-1 1806 Butte Gen. Bidwell's Comment
  UC446423  Salix melanopsis E. B. Copeland 1931-6-20 Butte across Butte Creek Jonesville 1500 Comment
  CHSC65010  Salix scouleriana Vernon Oswald 1987-6-9 2971 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
  CHSC8617  Salvia sonomensis L. V. Ritter 1969-5-2 311 Butte Ca. 2 mi. w of Cohasset; ca 10 yds. s of Cohasset highway. Comment
  SEINET10869907  Salvia sonomensis Mary Susan Taylor 1975-4-25 Taylor 493 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  CHSC27253  Sambucus mexicana P. Moyer 1972-5-7 195 Butte N bank Chico Ck. By L.S. Bridge. CSUC campus. 60 Comment
  UC392190  Sambucus mexicana E. B. Copeland July, 1929 Butte Butte Creek Jonesville 1550 Comment
  CHSC12398  Samolus parviflorus Lowell Ahart 1973-6-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC73328  Sanicula bipinnata Miss M. Alice King 1905-1 Butte near College City (Sacramento Valley); Sacramento Valley Comment
  SEINET10454570  Sanicula bipinnatifida Mary Susan Taylor 1976-3-30 Taylor 1038 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET12121438  Sanicula bipinnatifida Unknown 1981-1 11 Butte approx. 1 mi E of Chico, 250 ft N of Bidwell Park road 207 Comment
  JEPS115311  Sanicula crassicaulis Lowell Ahart 2009-4-22 15566 Butte West side of 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
  UCD127972  Sanicula crassicaulis Joseph M. DiTomaso 1976-5-23 473 Butte Lake Oroville, peninsula at south end. 274 Comment
  UCD127991  Sanicula crassicaulis Robert Kehlor 1951-5-6 47 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC73731  Sanicula graveolens B. Castro 1997-6-30 725 Butte Ca. 2.2 air mi NE of Brush Creek and 1 mi ENE of Mtn. House, on S-facing slope of ridge overlooking Mtn House Creek. On N edge of USFS Rd 22N54, ca 1.1 rd mi E of the Oro-Quincy hwy, at base of road cut. 1066 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
  CHSC94574  Saponaria officinalis Lowell Ahart 2006-9-11 13337 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS119921  Saponaria officinalis Lowell Ahart 2012-10-20 18497 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
  CHSC1416  Sarcodes sanguinea 1954-5-30 Butte Rag Dump, near Stirling. 1066 Comment
  UC726266  Saxifraga californica A. A. Heller 1940-3-8 15507 Butte just above Spring House on the Neal Road to Paradise Comment
  SEINET10483045  Saxifraga nidifica Lowell Ahart 1983-2-21 Ahart 3902 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 35 m. 35 Comment
  CHSC50426  Saxifraga nidifica var. nidifica Vernon Oswald 1990-6-26 4318 Butte Butte Creek House Meadow Ecological Preserve, ca. 3.5 mi east-southeast of Jonesville. On the north side of the north branch of the creek. 1780 Comment
  UC1212526  Saxifraga odontoloma E. B. Copeland 1931-7-20 Butte vicinity of Jonesville (Lassen National Forest); Lassen National Forest 1500 Comment
  UC1602228  Saxifraga oregana H. F. Copeland jun 1929 1240 Butte Jonesville 1524 Comment
  CHSC40633  Scandix pecten-veneris Lowell Ahart 1985-4-1 4875 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 30 Comment
  CHSC44465  Scandix pecten-veneris Lowell Ahart 1988-4-30 5970 Butte On the Joie Osgood Ranch, along a small stream, east of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC45886  Scandix pecten-veneris Lowell Ahart 1974-4-11 371 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC1594609  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte about 2 mi w Biggs (on the n side of Biggs Princeton Road); w of Biggs 30 Comment
  CAS-BOT-BC111649  Schoenoplectus mucronatus Lowell Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 15 Comment
  CDA13830  Scirpus acutus var. occidentalis G. F. Hrusa, T. D. Wilfred 1996-9-5 13558 Butte Butte Basin; Butte Creek and about rice fields E 1/4 mi. from Butte Creek at Western Canal District Dam. Comment
  CHSC56799  Scirpus congdonii L. P. Janeway 1987-6-26 2291 Butte At Rag Dump, Fall Creek. 1173 Comment
  CHSC56805  Scirpus congdonii L. P. Janeway 1988-7-2 2973 Butte Southerly slope of Big Bar Mountain; along road 5.5 mi southwest of Coyote Gap. 1188 Comment
  JEPS122026  Scirpus congdonii Lowell Ahart 2014-7-2 19542 Butte On the north 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
  CHSC64241  Scirpus diffusus S. C. Morey 1983-8-1 646 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA92160  Scirpus diffusus F. W. Peirson 1926-6-21 6769 Butte Butte Meadow, Humboldt Road. Comment
  CHSC19637  Scribneria bolanderi J. Wheeler 1968-4-19 326 Butte W side of Cherokee Rd. ca. 0.75 mi s of Oregon City Rd., Table Mountain. 548 Comment
  RSA0024699  Scribneria bolanderi L. Ahart 2003-5-18 10180 Butte Peter Ahart Ranch. About 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 49 Comment
  UCD80611  Scribneria bolanderi CNPS SN Foothill Team 2005-3-30 SNFN 0029 b Butte CDFG North Table Mountain Wildlife Area, Table Mt. Ecological Reserve, approximately 500 m E of the parking area off Cherokee Road. 381 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
  CHSC101828  Scutellaria californica Lowell Ahart 2009-5-23 15762 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
  CHSC11050  Scutellaria siphocampyloides Lowell Ahart 1968-6-6 Butte Near Swede's Flat Road. 121 Comment
  SBBG71224  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Crk, E of Chico Comment
  HSC40295  Sedella congdonii J. P. Smith, J. O. Sawyer 1973-4-14 6043 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC87314  Sedella pumila Lowell Ahart 2004-2-7 10699 Butte In a depression, large rocks to the south, about 1 mile northeast of the Honcut Cemetery, about 4 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 71 Comment
  JEPS124221  Sedella pumila Lowell Ahart 2015-3-27 19979 Butte About 400 yards southeast of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north of Oroville. Comment
  UCD146834  Sedella pumila Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 35 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site, pool # ORO002, UTMs: 10S0624439; 4384482. Comment
  CAS-BOT-BC415013  Sedella pumila N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 06 Butte Table Mountain, Cherokee Rd., approx. two miles E of Hwy 70 Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  SEINET8472428  Sedella pumila A. A. Heller, H. E. Brown 1902-5-7 5486 Butte Berry Canyon , near Clear Creek. Comment
  CHSC42124  Sedum spathulifolium Lowell Ahart 1980-5-29 2358 Butte South of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  HSC85728  Selaginella hansenii L. P. Janeway 1984-10-19 1183 Butte Above the Oro-Quincy Hwy., along E side of Lake Oroville (Feather River) 335 Comment
  SEINET11718084  Selaginella hansenii R. E. Alumbaugh 1984-1 13 Butte 8.3 mi E of Chico, 6.2 mi E of Rt. 99 and ca 350 yards N of Skyway 387 Comment
  CHSC12107  Senecio aronicoides J. M. Pitts 1972-4-19 154 Butte 20 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  CHSC86438  Senecio eurycephalus var. lewisrosei Jenny Marr 1994-6-13 82 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on serpentine outcrop belonging to LNF. Site approx. 0.3 miles north of Magalia Reservoir. 759 Comment
  CHSC101142  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC43199  Senecio triangularis Robert Banchero 1981-7-19 608 Butte 0.3 mi s of Balt Mt look-out Tower, on Bald Mt. Meadow. 1688 Comment
  CHSC101087  Senecio vulgaris Lowell Ahart; John Dittes 2009-3-20 15502 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC31592  Senecio vulgaris L. Ahart 1974-3-12 316 Butte In garden. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4066  Senecio vulgaris J. H. Wheeler 1967-2-20 3 Butte Along w side of house at 248 Serviss St., Durham. 47 Comment
  CHSC42455  Senecio vulgaris Lowell Ahart 1987-5-6 5505 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC90185  Senecio vulgaris Robert Kissane 1989-4-18 8 Butte On Moore's ranch, 2090 Oak Park Avenue, Chico. 70 Comment
  CHSC41994  Sericocarpus oregonensis Lowell Ahart 1975-9-4 971 Butte Sierra Nevada. Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  JEPS76247  Setaria gracilis W. L. Jepson 1939-8-17 19456 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
Read comments
Jun 29 2007
  CDA2433  Setaria parviflora D. G. Kelch 2006-8-2 6 .339 Butte Along Durham-Dayton Hwy. at creek crossing. 0 Comment
  CHSC116322  Setaria parviflora Lowell Ahart 2015-10-16 20558 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CAS-BOT-BC240123  Setaria pumila Lowell Ahart 1981-9-19 3190 Butte Cresta Power House 550 Comment
  UC1100459  Setaria pumila Herbert L. Mason and Verne Grant 1946-9-27 13131 Butte Pennington-Gridley Rd. Butte Sink Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  JEPS127082  Sherardia arvensis Lowell Ahart 2016-4-15 20751 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  RSA715852  Sherardia arvensis L. P. Janeway 2005-3-10 8350 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  SEINET10500671  Sherardia arvensis Mary Susan Taylor 1979-5-6 Taylor 1991 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC97339  Sidalcea asprella L. P. Janeway 2007-6-26 9076 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the western side of the top of Swayne Hill; about 2.0 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 741 Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  SEINET10937539  Sidalcea calycosa Mary Susan Taylor 1975-10-4 Taylor 956 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC91991  Sidalcea gigantea L. P. Janeway 2005-9-4 8532 Butte Northern High Sierra Nevada. Between Road 24N13 and a north-eastern tributary to upper Lockerman Creek; about 1.3 km south of Logue Meadows. 1329 Comment
  CHSC33519  Sidalcea glaucescens R. A. Schlising; R. Preston, R. Banchero 1981-7-14 4145 Butte NE Butte County, 0.3 mi SW of Humbug Summit. 1981 Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  SEINET11991651  Sidalcea hartwegii Unknown 1976-1 6 Butte 10 yds S of Sky Way Rd, 6 mi E from junction of Hwy 99 & Sky Way Rd 366 Comment
  UC398687  Sidalcea hirsuta A. A. Heller 1926-5-8 13937 Butte nine mi n Chico; n of Chico Comment
  SEINET7718632  Sidalcea humilis Unknown Butte Mesa Comment
  POM183155  Sidalcea oregana subsp. spicata H. F. Copeland 1318 Butte Jonesville. Comment
  JEPS115810  Silene californica Lowell Ahart 2009-4-26 15624 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico 286 Comment
  SEINET11931589  Silene californica Unknown 1974-1 32 Butte ca 10 mi NE of Chico on Cohassett Rd 549 Comment
  UC203622  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit back Jonesville (on a n slope just below the crest of the ridge); Summit back of Jonesville 2133 Comment
  UCD98658  Silene gallica A. A. Heller 1914-4-24 11319 Butte 8 miles north of Oroville. Comment
  CHSC24878  Silene laciniata subsp. californica D. J. Funk 1976-4-15 11 Butte Ca. 50 yd w of Mud Creek. 682 Comment
  CHSC4022  Silene laciniata subsp. californica J. E. Bowlin 1967-3-18 7 Butte On hillside, ca. 10 feet s of Cohasset Rd. and ca. 1.7 miles ne of Keefer Rd. and Cohasset Rd., Chico. 152 Comment
  JEPS110078  Silene lemmonii Lowell Ahart 2006-7-16 12971 Butte West of a large wet meadow and bog, about 5 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
  JEPS97370  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte T26N R5E SW1/4 SW1/4 Sec. 4, 6000 ft, High Cascade Range, Red Fir Forest. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC81473  Sinapis arvensis Julie Rose 2000-2-21 4 Butte East Biggs, North end of Mead Avenue. On the east side of the road. 28 Comment
  UC203642  Sisyrinchium bellum A. A. Heller 1914-4-17 11304 Butte 8 mi n of Oroville (along a small stream) Comment
  UC726126  Smilacina stellata A. A. Heller 1919-5-17 13153 Butte near Stirling; Feather River 975 Comment
  CHSC13707  Solanum americanum M. S. Taylor 1974-10-11 325 Butte Ca. 50 ft e of Sacramento River, ca. 1/4 mi n of washout, ca. 10 mi w of Chico. 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
  UCR88751  Solanum americanum J. T. Howell 1959-9-26 35083 Butte Arch Rock, N Fork Feather River 457 Comment
  CHSC87563  Solanum parishii R. D. Fischer 2004-3-28 145 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along north end of Humboldt Trail. UTM: 10609467E 4405281N. 436 Comment
  CAS-BOT-BC157056  Solanum umbelliferum A. A. Heller; H. E. Brown 1902-5-6 5455 Butte Berry Canyon (Near Clear Creek) Comment
  POM69612  Solanum umbelliferum R. M. Austin 1876-07 s.n. Butte American Valley. Comment
  POM308449  Solidago californica Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3058 Butte Feather River Hwy. Comment
  SEINET10971230  Solidago californica Mary Susan Taylor 1979-10-5 Taylor 2234 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CAS-BOT-BC364935  Solidago velutina subsp. californica A. A. Heller 1916-9-23 12662 Butte Sierra Foothills near Forest Ranch Comment
  CHSC26703  Solidago velutina subsp. californica M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1455 Butte On both sides of Hwy 32, ca. 6 mi s of Forest Ranch. 609 Comment
  JEPS115320  Soliva sessilis Lowell Ahart 2009-5-8 15655 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
  POM181473  Sonchus oleraceus H. F. Copeland 863 Butte Nelson. Comment
  CHSC30281  Sorghum halepense M. S. Taylor 1979-10-28 2203 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  SEINET10594670  Sorghum halepense Isle 1969-5-20 ISLE 480 Butte 1st Avenue and Kentfield Drive, Chico. Johnson Grass. 195 Comment
  JEPS110440  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 424 Comment
  CHSC50993  Spergularia rubra Lowell Ahart 1990-7-4 6548 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
  CHSC42678  Sphenosciadium capitellatum Vernon Oswald 1983-8-4 955 Butte Near Humboldt Rd. 3.5 mi NE of Butte Meadows. 1414 Comment
  POM193364  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 430 Butte Jonesville. 1500 Comment
  CAS-BOT-BC149708  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back/east of Jonesville 2133 Comment
  CHSC2431  Spiranthes porrifolia R. Carter 1965-6-15 232 Butte Found 0.5 mi. N of Derrick Rd. on Old Cherokee Rd. along W side of road ca. 5' from edge of road, North Table Mountain ca. 5 mi. N of Oroville. 335 Comment
  CHSC42984  Stachys ajugoides var. rigida L. P. Janeway 1987-6-8 2165 Butte Along French Cr across from mouth of Ram Cr. 617 Comment
  CHSC52068  Stachys ajugoides var. rigida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-23 276 Butte By Humboldt/Humbug Rd. Ca. halfway between the Willow Ck and Scotts John Ck crossings. 1798 Comment
  CHSC84398  Stachys pycnantha Lowell Ahart 2003-7-23 10439 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 Comment
  UC1563286  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mi northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC38484  Stachys stricta Vernon Oswald 1983-5-31 592 Butte Upper Bidwell Park, Chico, 1000 ft n of Upper Park Rd and 800 ft w of the power lines. 115 Comment
  SD147596  Stellaria crispa Lowell Ahart 1981-9-15 3165 Butte Along French Creek 1299 Comment
  SEINET10833472  Stellaria jamesiana Mary Susan Taylor 1978-7-19 Taylor 1753 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CHSC90631  Stellaria media Lowell Ahart 2005-4-2 11689 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
  JEPS116039  Stellaria media Lowell Ahart, John Dittes 2009-3-20 15507 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  JEPS118041  Stellaria media Lowell Ahart 2011-6-3 17361 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  CHSC42733  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC1586575  Stephanomeria paniculata Lowell Ahart 1991-8-25 6704 Butte On the north side of the dirt road, Forest Road 23N60 (Jordan Creek-Marble Creek Road) east of Marble Creek, about 6 miles (air) northeast of Brush Creek. 1097 Comment
  CHSC51359  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald; Lowell Ahart 1990-10-11 4463 Butte Spur road off of Dark Canyon Rd, leading to the opening between railroad tunnels No. 7 and No. 8, about 4 miles south of Jarbo Gap. Road cuts. 335 Comment
  SEINET10589585  Stipa A. Arthur Heller 1914-6-22 Heller 11501 Butte Chico Meadows 1219 Comment
  CHSC39964  Streptanthus longisiliquus L. Ahart; P. Ahart 1983-6-30 4187 Butte Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. 1100 Comment
  CAS-BOT-BC87437  Streptanthus polygaloides Lowell Ahart 1983-6-30 4178 Butte About 1.5 mile northeast of Concow Res. 550 Comment
  JEPS106170  Streptanthus polygaloides Lowell Ahart 2004-6-22 11111 Butte On the west margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  SBBG29856  Streptanthus polygaloides L. Constance 1941-5-28 2826 Butte south branch of the Feather River at Magalia 487 Comment
  UC1492817  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4174 Butte near Magalia Railroad trestle Comment
  CHSC92591  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-6-26 8435 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  HSC96694  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-6-26 8435 Butte N High Sierra Nevada, 0.3 km W of Cedar Creek, 2.6 km NNW of the mouth of Cedar Creek at N Fork Feather River 1295 Comment
  JEPS108580  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-5-29 8408 Butte Northern High Sierra Nevada. Top of S end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km S of Kimshew Point. 1317 Comment
  CAS-BOT-BC516473  Streptopus amplexifolius V. Oswald; L. Ahart 1988-6-17 3400 Butte West side of Pinkard Creek ca. 1 mile north of Lost Creek Reservoir 1028 Comment
  CAS-BOT-BC48065  Styrax redivivus Lowell Ahart 1980-6-8 2369 Butte Along the road to Goldbank Mine. 600 Comment
  RSA126018  Styrax redivivus E. K. Balls 1957-5-22 22509 Butte Pulga, US Hwy 40 alt., Oroville to Quincy. 488 Comment
  CHSC98569  Swertia albicaulis var. nitida L. P. Janeway; B. Castro 2007-5-6 8975 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  POM193326  Symphoricarpos acutus E. B. Copeland 1930-7-7 479 Butte Jonesville. 1600 Comment
  CHSC28511  Symphoricarpos albus var. laevigatus M. S. Taylor; J. D. Jokerst 1979-10-13 2266 Butte On Jordan Hill Rd (Ponderosa Way on some maps) at jct with Griffith Gulch, ca. 7.1 mi N of its jct with Concow Rd, ca. 2 mi SE of Magalia. 701 Comment
  SEINET10938829  Symphoricarpos rivularis Mary Susan Taylor 1976-3-9 Taylor 1020 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  JEPS108935  Symphyotrichum bracteolatum Lowell Ahart 2006-9-9 13246 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1560 Comment
  CAS-BOT-BC97690  Symphyotrichum chilense H. E. Brown 1896-9-15 80 Butte near Clear Creek 53 Comment
  CHSC109753  Symphyotrichum chilense Lowell Ahart 2012-10-20 18486 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC65418  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1983-8-17 978 Butte Near Humboldt Rd. between Butte Meadows and Jonesville at the Hct. of Colby, Willow, and Butte creeks. 1493 Comment
  CHSC30398  Symphyotrichum subulatum var. parviflorum Diane H. Ikeda 1979-9-23 161 Butte SW of Chico, just E of Ord Ferry and Sacramento River. 30 Comment
  CHSC31613  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1977-9-24 1589 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC98328  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Gray Lodge, SW of Gridley - sides of a deep ditch, about 100 meters north of the Check-in-Station, Gray Lodge, 35 Comment
  RSA715887  Tamarix parviflora L. Ahart 2005-4-2 11697 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC97013  Tanacetum parthenium L. P. Janeway 2007-6-19 9066 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 2.1 road km south of Ponderosa Dam; 1.2 air km south-southwest of Ponderosa Dam and South Fork Feather River. 396 Comment
  JEPS117227  Tauschia hartwegii Lowell Ahart 2010-5-7 16631 Butte On south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico 301 Comment
  NY17382  Taxus brevifolia Collector unspecified 1879-1 s.n. 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
  CHSC11808  Thalictrum fendleri E. B. Copeland 1929-7-22 361 Butte Jonesville. 1500 Comment
  SEINET5576771  Thalictrum fendleri H. S. Gentry, S. Koch 1962-1 19768 Butte Creek along road, Cohasset to Chico. 457 Comment
  CAS-BOT-BC77717  Thelypteris nevadensis Lowell Ahart 1983-7-29 4222 Butte About 2 miles south of Milsap Bar, about 23 miles north-east of Oroville 750 Comment
  CAS-BOT-BC197364  Thinopyrum intermedium subsp. barbulatum M. S. Taylor 1978-7-21 1835 Butte In Big Bald Rock parking lot 997 Comment
  UC857556  Thysanocarpus curvipes A. A. Heller 1915-5-25 11899 Butte Mt. Ida ranch 10 mi e Oroville; Sierra foothills 457 Comment
  CHSC3993  Thysanocarpus radians Wayne O. Baum 1967-3-17 16 Butte In walnut orchard nw. of the Mangrove Ave. and Cohasset Rd intersection. 60 Comment
  SEINET3449123  Thysanocarpus radians Unknown 2003-3-24 10023 Butte Feather Falls, Feather Falls, about 5 air miles northeast, about 3 miles north of Lumpkin Ridge Road, on the north side of Fall River, west of the bridge across Fall River 40 Comment
  SEINET10449703  Tillaea erecta Mary Susan Taylor 1978-4-14 Taylor 1552 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
  SEINET10454706  Torilis japonica Mary Susan Taylor 1980-5-27 Taylor 2721 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  UC221662  Torilis nodosa Dr. Edward Palmer June 7-12 1892 2073 Butte near Chico Comment
  CHSC39294  Torreya californica Lowell Ahart 1983-7-29 65 Butte 2 miles east of Milsap Bar. About 25 miles north-east of Oroville. 1000 Comment
  CHSC61656  Torreyochloa pallida var. pauciflora Lowell Ahart 1993-9-13 7234 Butte In Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  JEPS106345  Torreyochloa pallida var. pauciflora Lowell Ahart 2004-8-2 11329 Butte In small stream, small bog in large meadow, ca. 200 yd E of Keyser Creek, on N side of the dirt County Rd, ca. 3/4 mi (air) NE of Oak Point, ca. 1/2 mi (air) W of Big Kimshew Creek, ca. 1 3/4 mi SE of Bald Mountain 1452 Comment
  SEINET9356098  Toxicodendron diversilobum Unknown 1976-5-29 8 Butte Ca. 35 mi E of Chico, Lassen National Forest, 20 ft E of Deer Creek; full sun. Comment
  CHSC49671  Toxicoscordion paniculatum Vernon Oswald 1985-4-29 1729 Butte Bald Rock Rd. 0.3 mi ne of the trailhead to Big Bald Rock. 975 Comment
  CHSC6061  Tragopogon porrifolius E. Parreno 1968-5-16 113 Butte E side of e 9th St. on vacant lot opposite the Community Center, Chico. 59 Comment
  CHSC44654  Triantha occidentalis subsp. occidentalis L. P. Janeway 1988-7-29 3108 Butte Mdw of S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 Comment
  CHSC88161  Triantha occidentalis subsp. occidentalis Lowell Ahart 2004-8-2 11322 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City. 1689 Comment
  JEPS119804  Tribulus terrestris Lowell Ahart 2012-5-17 18069 Butte 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. Comment
  CHSC102306  Trichostema lanceolatum Lowell Ahart 2009-9-13 16405 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 100 Comment
  CHSC812  Trichostema lanceolatum V. Holt; M. Underhill 1952-7-21 Butte Foothills near Chico. 60 Comment
  CDA40989  Trichostema lanceolatum T. C. Fuller 1964-10-6 12677 Butte Northwest corner of Hamilton Road & Highway 99E to Chico, 2 miles north of Biggs. 0 Comment
  SEINET12332660  Trichostema simulatum R. A. Schlising, Broyles, P. 1988-1 4578 Butte N of Jarbo Gap & W of Hwy 70 & Feather River, along Rim Rd (=Ponderosa Way) on Ricky Ridge 930 Comment
  RSA460854  Trientalis latifolia Michael A. Vincent 1962-4-18 208 Butte 3 miles E of Countolenc Road at Whiskey Flats near Feather River Comment
  SEINET10907204  Trientalis latifolia Mary Susan Taylor 1976-5-5 Taylor 1121 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  JEPS122223  Trifolium Lowell Ahart 2014-4-20 19393 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  JEPS21871  Trifolium albopurpureum Annette Waters 1958-4-19 228 Butte 6.9 mi se junction with US Hwy 99E (en route from Oroville to Chico) Comment
  SEINET10451872  Trifolium albopurpureum Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5389 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  RSA754788  Trifolium albopurpureum var. albopurpureum L. Ahart 2009-4-26 15629 Butte N 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
  CHSC39930  Trifolium albopurpureum var. olivaceum M. S. Taylor; V. Oswald 1984-4-4 5389 Butte S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Comment
  CHSC108986  Trifolium bifidum var. bifidum Lowell Ahart 2012-4-30 17929 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 269