Search Results — 2000 specimen records retrieved (1610 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC94124  Abutilon theophrasti Lowell Ahart 2006-7-4 12912 Butte In an idle rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 29 Comment
  CHSC97719  Abutilon theophrasti Lowell Ahart 2007-10-31 14516 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  CHSC81447  Acer circinatum D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  SEINET10453987  Acer circinatum Mary Susan Taylor 1981-5-21 Taylor 3789 Butte T23N R5E ne sec 28, Pulga quad. In Mayaro, along creek, ca. 2 mi NE of Pulga on Feather River Hwy 70. Granite soils in shaded filtered light; Yellow Pine Forest; 1600 ft. 488 Comment
  UC426916  Acer glabrum var. glabrum E. B. Copeland 1930-6-28 423 Butte Jonesville Jonesville (on shady side of high ridge) 2100 Comment
  CHSC11866  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville, Butte County, (along streams down to 1500 m.). 2100 Comment
  CHSC116971  Acer macrophyllum Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 0.5 mile off Hwy 70. 572 Comment
  POM85245  Acer macrophyllum C. C. Bruce 1897-04 1790 Butte Little Chico. Comment
  CHSC108830  Acer negundo Lowell Ahart 2012-4-17 17871 Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. 28 Comment
  JEPS119586  Acer negundo Lowell Ahart 2012-4-17 17871 Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. Comment
  CAS-BOT-BC21702  Achillea millefolium Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC95214  Achillea millefolium R. D. Fischer 2004-5-2 801 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Guardian Trail between the Pine and Bloodypin Trails. 335 Comment
  UC444995  Achillea millefolium E. B. Copeland 1930-7-1 5 m5 Butte along, on dry bars Butte Creek; Jonesville 1500 Comment
  CHSC39505  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  JEPS113329  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. Comment
  CAS-BOT-BC218050  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte About 1.5 miles SE of Stirling City 1100 Comment
  SEINET11839288  Achyrachaena mollis Unknown 1975-1 25 Butte ca 5 m from Skyway Rd., 5.6 mi E of Chico 305 Comment
  CHSC45909  Acmispon americanus var. americanus Lowell Ahart 1981-8-11 3025 Butte Along North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC3754  Acmispon brachycarpus R. L. Adams 1964-4-12 66 Butte Bidwell Park on Sacramento River, W. Sac. Ave. and River Rd. 9 mi. W. Chico. Comment
  HSC23345  Acmispon micranthus R. N. Bowman 1971-4-16 11 Butte 11.7 mi. E of Hwy. 70 on Pentz Rd. 91 Comment
  CHSC40895  Acmispon nevadensis Lowell Ahart 1985-11-5 5224 Butte About 50 feet below the high water line of Lake Oroville, about 1/2 mile west of the Ponderosa Dam. near where Sucker Creek flows into the South Fork of the Feather River. 286 Comment
  CHSC50996  Acmispon nevadensis Lowell Ahart 1990-7-4 6539 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
  CDA42977  Acmispon nevadensis var. nevadensis L. Ahart 2013-11-17 19269 Butte About 60 yards east of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  CHSC26791  Acmispon parviflorus M. S. Taylor 1978-5-6 1588 Butte Along trail, Magalia. 609 Comment
  CHSC28864  Acmispon parviflorus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 467 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
Read comments
Jan 19 2011
  UCD95295  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville. 1500 Comment
  CAS-BOT-BC65621  Adiantum jordanii John Thomas Howell 1955-6-15 30502 Butte West Branch of North Fork of Feather River, 2 miles n. of Pentz 335 Comment
  CDA19906  Aegilops triuncialis R. Hill 2002-5-3 PDR 009409 Butte Northern California; Vicinity of Oroville. 0 Comment
  CHSC65209  Aegilops triuncialis Lowell Ahart 1995-5-30 7581 Butte South of Beatson Hollow, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  RSA724909  Aegilops triuncialis L. P. Janeway 2007-6-11 9037 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67. 1.1 km northwest of Lumpkin Road, 2.6 km west of Feather Falls town site. NAD 83. 757 Comment
  CHSC90077  Aesculus californica Elizabeth A. Ballou 1991-4-23 7 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  SEINET12236158  Aesculus californica Unknown 1978-1 18 Butte Cherokee quadrangle, Upper Miocene Canal 448 Comment
  CHSC8144  Agoseris heterophylla J. G. Moore 1969-4-13 76 Butte Pentz Rd., 200 yds. E of Hwy. 99, on S side of road. 60 Comment
  CHSC33795  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of Spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  CHSC48840  Agrimonia gryposepala Vernon Oswald 1985-7-24 1911 Butte East meadow at Doon Camp located on the Skyway ca. 1 mi e of Lovelock. 841 Comment
  CHSC55462  Agrostis avenacea L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 38 Comment
  SEINET10753214  Agrostis avenacea Lawrence P. Janeway 1991-6-7 Janeway 3991 Butte Honcut quad T18N, R4E, SE 1/4 of sec. 33. Ca. 0.8 mi E of Palermo-Honcut Road, ca. 5.1 mi S of Palermo. Disturbed annual grassland (plowed, many cattle in spring). 38 Comment
  CDA28123  Agrostis elliottiana L. Ahart 2004-4-6 10729 Butte Peter Ahart Ranch, ~ 2.25 mi N and 1.25 mi E of Honcut, ~12 mi (air) SE of Oroville. Comment
  RSA726773  Agrostis hendersonii L. Ahart 2007-5-22 13899 Butte About 14 miles (air) northeast of Oroville. 956 Comment
  SEINET10507106  Agrostis microphylla Lowell Ahart 1984-5-7 Ahart 4592 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC78354  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET4344591 Image available Agrostis pallens Unknown 2009-6-19 15929 Butte T23N, R2E, near center, upper half of section 35. About 30 yards south of the fence and 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  CHSC69733  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC94533  Agrostis scabra Lowell Ahart 2006-8-15 13186 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC31731  Agrostis stolonifera L. Ahart 1977-7-19 1480 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS87680  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte about 3 1/2 air mi n Oroville (s. edge of Cottonwood Rd, on e. side of overpass over Highway 70) 60 Comment
  CHSC49494  Agrostis variabilis V. Oswald; L. Ahart 1988-8-16 3692 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  SEINET10936190  Ailanthus altissima Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4208 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC36404  Aira caryophyllea Kirsten Tarp 1982-3-22 93 Butte 1 mi e of jct Hwy 149 and 99 on 149, ca. 13 mi se of Chico. 57 Comment
  CAS-BOT-BC138348  Aira caryophyllea var. caryophyllea Peter H. Raven 1953-5-9 5434 Butte 7.2 miles from Bangor on Oroville Road. Comment
  SEINET10483793  Alchemilla occidentalis Mary Susan Taylor 1980-4-6 Taylor 2440 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC113209  Alisma lanceolatum Lowell Ahart 2014-4-25 19405 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
  JEPS127629  Alisma lanceolatum B. Castro 2008-7-15 1760 Butte Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near junction of Cherokee Canal, Southern Pacific RR and the Biggs extension canal. Comment
  JEPS110041  Alisma plantago-aquatica Lowell Ahart 2006-10-8 13437 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
  SEINET10839999  Alisma triviale Mary Susan Taylor 1975-10-3 Taylor 922 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CAS-BOT-BC460731  Allium amplectens H. E. Brown 1897-4-15 172 Butte 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
  RSA21176  Allium amplectens Carl B. Wolf 1937-5-14 8668 Butte Sacramento Valley, 4 1/2 miles W of Oroville on road to Richvale. 46 Comment
  RSA256662  Allium amplectens R. A. Vanbianchi 1974-4-20 209 Butte 300 yards south of the intersection of Pentz and Clark Roads. Comment
  SEINET3883765  Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy. #70, 4.4 mi. s. of the Oroville Dam Exit (Hwy. #126).; 0 Comment
  UC398901  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  SEINET12046120  Allium cratericola Unknown 1978-1 8 Butte N side Cherokee Rd., ca 5.8 mi E jct Hwy. 70 and Cherokee Rd., 12.5 mi N Oroville. Oroville Quadra 396 Comment
  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
  JEPS108586  Allium jepsonii L. P. Janeway 2005-7-16 8495 Butte Northern High Sierra Nevada. On Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Batchelor Point. Near ridgetop 927 Comment
  RSA770536  Allium jepsonii S. Mashayekhi, M. Biabani 2010-6-11 SM 061 Butte 0.29 miles north on Andy Mt. Road with its junction of Hwy 70. West side of road. 955 Comment
  CHSC4371  Allium membranaceum R. L. Smith 1966-5-28 Butte 3 mi. w of DeSabla. Comment
  CHSC31527  Allium peninsulare L. Ahart 1977-5-22 1395 Butte Along the sides of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  RSA769675  Allium peninsulare var. peninsulare Lowell Ahart 2009-4-22 15596 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  CHSC49481  Allium validum Vernon Oswald; Lowell Ahart 1987-7-1 3046 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  NY334881  Allocarya conjuncta E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  CHSC44410  Allophyllum divaricatum Lowell Ahart 1988-6-29 6101 Butte On a bank along Bean Creek Road, east of a small branch of Bean Creek, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC35102  Allophyllum integrifolium R. Schlising; R. Banchero 1980-7-31 3944 Butte N end of Snag Lake. 1725 Comment
  CAS-BOT-BC170916  Alnus rhombifolia A. A. Heller 1913-4-6 10719 Butte Bottoms along Big Chico creek, E of Chico Comment
  SEINET10478439  Alnus rhombifolia Mary Susan Taylor 1979-10-12 Taylor 2242 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  SEINET10507157  Alopecurus saccatus Lowell Ahart 1983-5-12 Ahart 3978 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CDA38787  Amaranthus albus L. Ahart 2011-10-29 17720 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC30384  Amaranthus albus J. D. Jokerst 1980-5-28 804 Butte Top of Table Mt., sides of Cherokee Rd at the east end of the Mt. Comment
  JEPS110467  Amaranthus retroflexus Lowell Ahart 2006-9-28 13365 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
  UCR188574  Ambrosia psilostachya George K. Helmkamp, E. A. Helmkamp 2007-10-7 13076 Butte Northern Sacramento Valley, along Biggs East Highway, 1.6 miles east of CA-99 in Biggs 35 Comment
  CHSC27707  Amelanchier pallida Robert A. Schlising; Marc P. Hayes 1978-6-24 3291 Butte Probably just inside Butte County line on summit of Humboldt Peak. 2133 Comment
  CHSC108142  Ammannia coccinea Lowell Ahart 2011-10-29 17719 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  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
  UC1191591  Ammannia robusta Herbert L. Mason and Verne Grant 1945-7-10 12633 Butte n. of Marysville Butte (along Butte Creek, Grey Lodge Game Refuge - southern); Grey Lodge Game Refuge, Butte Creek 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
  HSC96898  Amsinckia intermedia L. Ahart 2005-4-14 11700 Butte Gridley, N of Spruce St., E of the railroad tracks 28 Comment
  UCR237311  Amsinckia intermedia George K. Helmkamp, E. A. Helmkamp 2012-4-14 18761 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC41361  Anagallis arvensis R. A. Schlising 1983-5-15 4407 Butte Richvale Vernal Pools; 0.25 mile S of junction Highway 162 to Oroville with Highway 99, along the latter and across from Thermalito Afterbay. In largest pool. Comment
  POM33358  Ancistrocarphus filagineus C. C. Bruce 1897-06 2111 Butte Fields Comment
  CAS-BOT-BC137804  Andropogon virginicus var. virginicus W. S. Ball 1939-2-16 s.n. Butte Wyindott Irrigation District, ditch east of Oroville about 5 miles. Comment
  SBBG26817  Angelica breweri E. B. Copeland 1930-7-21 Butte Jonesville 1650 Comment
  CHSC10624  Anthemis cotula Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD128971  Anthemis cotula L. Ahart 1982-4-29 3390 Butte Graylodge Wildlife Refuge. A little W of check-in station. Ca. 12 miles SW of Gridley. 35 Comment
  CHSC50018  Anthriscus caucalis Lowell Ahart 1990-4-8 6436 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  SEINET10873865  Anthriscus scandicina Mary Susan Taylor 1975-4-25 Taylor 497 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
  CHSC98662  Antirrhinum cornutum B. Castro; L. P. Janeway 2005-8-3 1511 Butte Ca 20 air mi NNE of Oroville and 1.2 mi S of Flea Mtn, along Concow Rd ca 0.1 mi N of its jcn with Rim Rd. Along narrow path under power lines just W of Concow Rd, in small openings. 1002 Comment
  CHSC39235  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5217 Butte Vicinity of mouth of Flag Canyon. On top pf North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC30880  Aphanes occidentalis J. D. Jokerst 1979-4-1 1165 Butte Top of North Table Mt, S of the intersection of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC12929  Aphyllon purpureum K. D. Cox 1974-4-5 186 Butte On banks of Lake Oroville, Lunt Ranch on Lunt Rd., off Hwy 70, N of Oroville. Comment
  CHSC31885  Aphyllon purpureum L. Ahart 1974-3-18 331 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC103  Apocynum androsaemifolium 1931-6-3 Butte Forest Ranch. 609 Comment
  CHSC29376  Arabidopsis thaliana R. A. Schlising; R. Banchero 1980-6-2 3622 Butte 10.3 mi n of jct Forest Ranch Road (which is just n of village of Forest Ranch), along Hwy 32. 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
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  CHSC45300  Arceuthobium abietinum Vernon Oswald 1987-6-14 2999 Butte Near Humboldt Rd. at the w boundary of Lassen National Forest between Butte Meadows and Cherry Hill. 1389 Comment
  RSA325115  Arceuthobium campylopodum M. S. Taylor 1975-9-19 911 Butte Ca 0.5 mi N of Magalia, ca 50 ft E of Skyway. 610 Comment
  CHSC102396  Arceuthobium occidentale Lowell Ahart 2009-8-23 16301 Butte South edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 259 Comment
  CHSC3261  Arceuthobium occidentale M. L. Hillier 1966-4-23 Butte About 9.5 miles e. of C.S.C. admin. building. Chico. Comment
  JEPS115634  Arceuthobium occidentale Lowell Ahart 2009-8-23 16301 Butte South edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 259 Comment
  CHSC4596  Arctostaphylos C. Glascock 1965-2-27 200 Butte Ca. 15 yds. N of corner of Meadowview and Oro-Quincy Hwy., 2 mi E of Oroville. 36 Comment
  CAS-BOT-BC24435  Arctostaphylos manzanita J. D. Jokerst 1985-7-18 2516 Butte Canyon of Rock Cr. between cr. and Cohasset Hwy, nw. of Cohasset, lower canyon slope. Comment
  CAS-BOT-BC24439  Arctostaphylos manzanita Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6300 Butte On Pentz Rd. near Kunkle Reservoir. Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC24701  Arctostaphylos manzanita subsp. manzanita J. R. Nelson 1976-3-1 6 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  JEPS109967  Arctostaphylos mewukka subsp. truei Dean W. Taylor 2006-7-12 19564 Butte Swain Hill; northwest flank along County Road 47 1158 Comment
  UC426930  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte above Jonesville (on high ridges) 2050 Comment
  UC481530  Arctostaphylos nevadensis H. F. Copeland 1931-6-11 Butte above Kirby Meadows; Jonesville Comment
  CAS-BOT-BC46714  Arctostaphylos patula H. F. Copeland 1928-5-6 223 Butte Jonesville. 1524 Comment
  RSA381139  Arctostaphylos truei J. T. Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise. 609 Comment
  UCD51951  Arctostaphylos truei John Thomas Howell 1975-6-15 51112 Butte 609 Comment
  SEINET11989215  Arctostaphylos truei J. T. Howell 1975-1 51083 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  UCD52615  Arctostaphylos viscida John Thomas Howell 1975-6-15 51108 Butte Skyway near Billie Road, Paradise, Butte County, Transition Zone. 609 Comment
  UCD52621  Arctostaphylos viscida John Thomas Howell 1975-6-15 51085 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  UCD52627  Arctostaphylos viscida R. R. Kehlor 1951-4-14 25 Butte Foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road, Butte County, California. Comment
  CHSC27932  Arctostaphylos viscida subsp. viscida M. S. Taylor 1976-4-24 1074 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
  CHSC31919  Arctostaphylos viscida subsp. viscida M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3376 Butte E side of Lumpkin Rd, ca. 300 ft N of Macabes Creek, ca. 2 mi N of jct of Lumpkin Rd and Oroville-Quincy Hwy (162), ca. 13 mi NE of Oroville. 457 Comment
  CHSC57370  Arctostaphylos viscida subsp. viscida Patrick Cooley 1990-4-1 3 Butte Jct. Skyway and Coutolenc Rd. ca. 1 1/2 mi. N of Paradise. 701 Comment
  UC1174972  Arctostaphylos viscida subsp. viscida P. C. Everett and E. K. Balls 1959-10-20 23908 Butte Hwy 32 9.4 mi ne Chico (toward De Sabla) 792 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
  CDA31420  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville Comment
  SEINET10512686  Aristida oligantha Edwin B. Copel 1903-7-27 Copeland 3488 Butte Chico. on bank of sloughs. Comment
  SEINET11686322  Aristida oligantha Unknown 1983-1 4278 Butte along Hwy 32, ca 1 mi E of Chico, Valley Grassland 100 Comment
  CHSC37505  Aristida ternipes var. hamulosa J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1679 Butte Top of Table Mt. top of the bench that is ca 200 meters north of Phantom Falls (Wedge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  JEPS94791  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  JEPS117609  Aristolochia californica Lowell Ahart 2010-6-12 16795 Butte Climbing on shrubs on the east side of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 216 Comment
  UC176145  Aristolochia californica A. A. Heller 1913-3-9 10687 Butte hills 2 mi. n. of Oroville Comment
  UC687398  Aristolochia californica unknown 1896-2 151 Butte Butte Creek Canyon Comment
  SEINET10937924  Aristolochia californica Mary Susan Taylor 1975-4-29 Taylor 543 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC43188  Arnica dealbata Robert Banchero 1981-8-4 641 Butte Ca 1.7 mi n of Scotts-John Rd and Jonesville Rd jct. Meadow. 1828 Comment
  POM195761  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville 1550 Comment
  UCR208054  Arrhenatherum elatius Paul Maslin 2004-5-21 0034 Butte Sierra Nevada Mtns., west of Hwy 32 between Chico and Forest ranch within Big Chico Creek Ecological Reserve (BCCER) 488 Comment
  CHSC34178  Artemisia douglasiana L. Ahart 1981-9-15 3162 Butte Ca. 1 mi N of Lost Creek Reservoir, ca. a little W of Pinkard Creek, ca. 1 mi W of Sly Creek Reservoir. 1200 Comment
  JEPS114682  Artemisia douglasiana Lowell Ahart 2008-6-23 15150 Butte N side of Ponderosa Way, N of the water fall, about 1 mi (air) SW of the Ponderosa Dam, about 2 1/4 mi (air) NW of Forbestown 482 Comment
  RSA718157  Artemisia douglasiana L. Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  SBBG128103  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, ca. 0.5 mi W of Pacific Heights Rd, ca. 3.5 mi NW of Palermo 31 Comment
  CHSC23542  Arundo donax M. S. Taylor 1975-10-3 936 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CAS-BOT-BC400630  Asarum hartwegii Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CAS-BOT-BC400642  Asarum hartwegii Mrs. C. C. Bruce 1898-6-1 2423 Butte Day Hill Comment
  CHSC36078  Asarum lemmonii R. A. Schlising 1982-6-10 4291 Butte N of Paradise and Magalia at old Powellton site; along Kanaka Creek. 1097 Comment
  CHSC3347  Asclepias cordifolia Robert L. Smith 1966-4-4 75 Butte Salmon Hole, 6 miles NE of Chico. Little Chico Creek. Comment
  CHSC93176  Asclepias cordifolia L. P. Janeway 1994-6-6 4657 Butte Northern High Sierra Nevada. East end of Watson Ridge; along Road 21N25 about 0.5 mi north of Fall River and about 1.7 mi west of Kenebeck Ridge. Ridge top and road cutbank. 1158 Comment
  CHSC32619  Aspidotis densa M. S. Taylor; L. Hanson 1981-3-31 3454 Butte N side of Spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd, rd to Flea valley) ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 792 Comment
  UC1609394  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte ca. 1 air mi nw Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); Jackass Flat, Mooreville Ridge 1158 Comment
  SEINET10473398  Aster Mary Susan Taylor 1977-11-12 Taylor 1537 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC42026  Aster radulinus Lowell Ahart 1986-8-15 5382 Butte North of the dirt road, about 1/2 mile southwest of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  CHSC43599  Aster radulinus Vernon H. Oswald 1986-8-7 2276 Butte Northeast edge of Paradise Lake, ca. 1 mi N of the picnic area. 780 Comment
  CAS-BOT-BC178468  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte Hills six miles north of Oroville. Comment
  CHSC103968  Astragalus gambelianus Lowell Ahart 2010-5-7 16611 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC40605  Astragalus gambelianus Ahart; Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  CHSC90942  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 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
  UC176262  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte hills six mi n Oroville; n of Oroville Comment
  SEINET10452223  Astragalus gambelianus Lowell Ahart, James D. Jokerst 1985-5-10 Ahart 4940 Butte Eastern Table Mountain area in gulchlands, about 8 miles north of Oroville. Comment
  SEINET12164073  Astragalus gambelianus Unknown 1979-1 1 Butte S Side of Skyway, ca 4mi W of Paradise 305 Comment
  CHSC2446  Asyneuma prenanthoides R. Carter 1965-7-6 276 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd. on E bank above road. 914 Comment
  CHSC42892  Asyneuma prenanthoides L. P. Janeway 1987-6-27 2367 Butte 2.0 mi W of Bald Mtn along road to Stirling City. 1493 Comment
  CAS-BOT-BC68687  Athyrium filix-femina var. californicum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC44606  Athyrium filix-femina var. cyclosorum Vernon Oswald 1987-7-13 3108 Butte Willow Creek ca. 0.3 mi w of Humbug Rd., ca. 3.25 mi (air) ese of Jonesville. 1828 Comment
  CAS-BOT-BC17446  Athysanus pusillus Mrs. J. H. Morrison 1932-3-20 s.n. Butte Durham. Comment
  SEINET11986399  Athysanus pusillus Unknown 1976-1 13 Butte ca 10 ft N of Ponderosa Way, ca 4 mi W of jct of Ponderosa Way & Hwy 32, ca 22 mi NE of Chico 427 Comment
  CHSC46866  Atriplex argentea var. mohavensis Vernon Oswald 1989-9-6 3982 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.9 mi w of Pennington Rd. 19 Comment
  JEPS90671  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road, 100 ft s of Parking Lot 5 on Rutherford Road, 0.5 mi w of Pennington Road); Gray Lodge Wildlife Management Area 21 Comment
  CHSC34769  Atriplex triangularis L. Ahart 1981-11-6 3221 Butte On sides of a deep ditch, on n side of rd near the entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC146176  Avena barbata Lowell Ahart 1989-5-23 6233 Butte Near a new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC146177  Avena barbata Lowell Ahart 1987-5-6 5548 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  SEINET7297380 Image available Avena barbata A. A. Heller 1914-1 11207 Butte Moist places along a small stream eight miles north of Oroville, near the western base of Table mountain. Comment
  CHSC4363  Avena fatua V. Hagaman 1966-4-25 Butte On CSC Campus. Comment
  CDA10378  Baccharis pilularis L. Ahart 2000-11-4 8715 Butte On the east side of Highway 70, about 50 yards south of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. Comment
  CHSC21059  Baccharis pilularis subsp. consanguinea M. S. Taylor 1975-10-3 948 Butte On Sacramento River, ca. 1/2 mi N of washout on River Rd, ca. 10 mi W of Chico. 36 Comment
  UC600734  Balsamorhiza sagittata H. F. Copeland 1932-6-29 Butte Jonesville 2000 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  UC854679  Berberis aquifolium var. dictyota A. A. Heller 1917-3-18 12669 Butte lower end of Iron Canyon (Chico Creek) Comment
  CHSC39407  Bidens frondosa Lowell Ahart 1983-9-17 4433 Butte East end of Kunkle Reservoir Dam, south of Paradise. 600 Comment
  CHSC51898  Bistorta bistortoides L. P. Janeway 1988-7-29 3126 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC56748  Blennosperma nanum J. D. Jokerst 1980-3-28 Butte West of Hwy 99, north of its junction with Gage-Shippee Road. Comment
  CHSC90044  Blennosperma nanum Richard R. Snow 1991-3-25 8 Butte 50 yds n of Renkow Rd., .5 mi e of Meridian Rd. ca. 12.8 mi n of Chico. 70 Comment
  UCSB63606  Blennosperma nanum Peek, Jeffrey 1982-4-18 Butte Ca. 5 mi. ne of jct. of Hwy. 99 and Skyway, ca. 6 mi. sw of Paradise, ca. 100 yds n of Skyway Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. 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
  CHSC41902  Boechera breweri subsp. shastaensis Lowell Ahart 1961-2-26 2 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  CHSC87413  Boechera breweri subsp. shastaensis R. D. Fischer 2004-2-28 120 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). On outcropping overlooking canyon. 548 Comment
  UCD114352  Boechera breweri subsp. shastaensis Robert E. Preston 1986-4-29 540 Butte ca. 6.5 km n of Oroville, on North Table Mtn. 366 Comment
  CAS-BOT-BC14290  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte Summit above Jonesville. 2133 Comment
  SEINET10453130  Boisduvalia densiflora Mary Susan Taylor 1980-8-30 Taylor 3320 Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  SEINET12194591  Boisduvalia densiflora Unknown 1985-1 5058 Butte Lumpkin Ridge, 1-1/2 mi E of Camp 18, about 8 mi NE of Feather Falls 975 Comment
  SEINET3356337 Image available Boisduvalia sparsiflora A. A. Heller 1914-7-24 11621 Butte Butte Meadows 1219 Comment
  CAS-BOT-BC28204  Bolboschoenus glaucus Lowell Ahart 1982-7-10 3765 Butte Ca 1/4 mi SE of the Gray Lodge Headquarters, ca 13 mi SW of Gridley. 35 Comment
  JEPS88584  Bolboschoenus maritimus subsp. paludosus Vernon H. Oswald and Lowell Ahart 1996-7-22 8095 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River Sacramento River National Wildlife Refuge, Llano Seco Unit (NE corner of Tract 1.1, Sanctuary II) 33 Comment
  UC777275  Botrychium simplex W. H. Wagner Jr. 1949-7-16 4610 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  CAS-BOT-BC145679  Brachypodium distachyon Roxana S. Ferris 1952-5-16 12479 Butte Top of Table Mountain, about 4 miles south of Cherokee on road to Oroville. Comment
  CHSC42850  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC96749  Brassica juncea Lowell Ahart 2007-6-3 13975 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) west of Concow Reservoir. 415 Comment
  CHSC80540  Brassica napus Lowell Ahart 2001-5-10 8739 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  JEPS115834  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles 60 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
  CHSC113308  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. 29 Comment
  CAS-BOT-BC127679  Brickellia greenei Lowell Ahart 1983-8-16 4281 Butte Along the edge of Humboldt Road, about 3 miles SW of Butte Meadows. 1450 Comment
  CHSC41556  Briza maxima R. L. Ondricek-Fallscheer 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC81589  Briza maxima D. Tellefson 2000-4-27 Butte Near Table Mountain Golf Course, Oroville. 40 Comment
  SEINET10934471  Briza maxima Lowell Ahart 1970-5-12 Ahart 53 Butte Ca. typical size. On dry soils. Peter Ahart Ranch, Honcut. Foothill Woodland. 46 Comment
  CAS-BOT-BC145531  Briza minor Ira L. Wiggins 1925-3-25 1427 Butte 3.5 miles west of Pence on Pence-Durham Road. Comment
  CHSC10552  Briza minor Lowell Ahart 1965-4-20 Butte Peter Ahart Ranch, Honcut. 42 Comment
  RSA715855  Briza minor L. P. Janeway 2005-3-10 8346 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
  UCD57391  Briza minor Joseph M. DiTomaso 1976-5-23 469 Butte Lake Oroville. Peninsula at south end. Comment
  UCD139106  Brodiaea californica Robert E. Preston 2003-5-11 2132 a Butte ca. 5.25 mile east of Durham, along Pentz Road, 0.65 mile east of Hwy 99. 74 Comment
  CAS-BOT-BC482214  Brodiaea californica subsp. californica W. I. Follett; E. B. Follett 1963-5-19 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  SEINET12053142  Brodiaea elegans Unknown 5 s.n. Butte no further locality Comment
  JEPS107977  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 748 Comment
  CHSC3529  Brodiaea nana John Francis 1966-5-7 156 Butte 4.2 miles N. of intersection of Pentz Rd. and Hwy. 99E., on Pentz Rd. Comment
  CHSC81329  Brodiaea nana J. Trizzino 2001-4-25 56 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  UCD77136  Brodiaea nana Robert E. Preston 2003-5-11 2128 Butte 3 mi ESE of Richvale, along Hwy 99, 0.9 mi S of its jct with Hwy 162 35 Comment
  UCD22630  Brodiaea pulchella Joseph Laferriere 1982-4-18 4 Butte Table Mountain, NW of Cherokee Rd., 5 miles north of Oroville. 396 Comment
  CDA31579  Bromus carinatus T. C. Fuller 1962-7-12 9181 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  UCD58286  Bromus carinatus A. A. Beetle 1941-6-27 2741 Butte 20 miles northeast of Chico. Comment
  UC816144  Bromus carinatus var. carinatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows 1280 Comment
  CHSC6676  Bromus catharticus Marilyn Lee 1968-4-16 174 Butte 1046 1/2 W. 4th St., Chico. Comment
  JEPS103569  Bromus catharticus Lowell Ahart 2002-4-15 9493 Butte On a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC101801  Bromus diandrus Lowell Ahart 2009-5-8 15667 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
  CHSC41172  Bromus diandrus L. P. Janeway; Gary Benson, Randy Harrison 1984-9-10 Butte Plumas N.F. ECOS plot 11-044. Along County road 52515A above Mayaro and N Fk Feather River. 762 Comment
  CHSC42849  Bromus diandrus Lowell Ahart 1987-5-6 5549 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  JEPS115958  Bromus diandrus Lowell Ahart 2009-4-26 15611 Butte About 10 miles northeast of Chico, Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road 461 Comment
  CHSC61532  Bromus hordeaceus Lowell Ahart 1993-6-20 7005 A Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS115956  Bromus hordeaceus Lowell Ahart 2009-4-26 15638 Butte On the west side of Guardians Trail, just south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC99013  Bromus madritensis subsp. madritensis Lowell Ahart 2008-5-21 14777 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10520361  Bromus orcuttianus A. Arthur Heller 1917-7-26 Heller s.n. Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. Comment
  CAS-BOT-BC161959  Bromus rubens Peter H. Raven 1953-5-9 5436 Butte 7.2 miles from Bangor on Oroville Road. Comment
  CAS-BOT-BC161616  Bromus sterilis John Thomas Howell 1973-7-9 49695 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  CAS-BOT-BC161617  Bromus sterilis Lowell Ahart 1983-7-29 4238 Butte Sierra Nevada. Along the edge of the dirt road, ca. 0.5 mile east of Milsazp Bar, ca. 25 miles northeast of Oroville. 500 Comment
  CHSC44550  Bromus sterilis Lowell Ahart 1979-5-29 1894 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  CHSC5984  Brunfelsia calycina var. floribunda M. MacArthur 1968-6-12 149 Butte NW side of LS bld. near the wall of LS 120, Chico State College campus. 60 Comment
  JEPS94764  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 396 Comment
  CHSC118552  Callitriche fassettii Lowell Ahart; Emily Meigs Doe 2017-4-1 21388 Butte About 5 yards south of fence, east of the canyon that is the south branch of Coal Canyon, about 1 mile (air) northwest of the improved parking area, North Table Mountain, about 8 miles (air) north of Oroville. 343 Comment
  CHSC46286  Callitriche heterophylla var. bolanderi Vernon Oswald 1989-5-17 3777 Butte Wurlitzer Unit, Vina Plains Preserve. Along the edge of the farm pond. 56 Comment
  CHSC47393  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 4595 Butte In a small pool, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CAS-BOT-BC80354  Calocedrus decurrens John Thomas Howell 1962-6-15 37433 Butte Magalia 731 Comment
  CHSC33953  Calocedrus decurrens M. S. Taylor 1981-8-15 4182 Butte On n side of Skyway, Inskip. 1463 Comment
  SEINET10531072  Calocedrus decurrens Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4182 Butte T25N R4E se 1/4 se 1/4 sec 29. Paradise NE quad. Weed lot on N side of the Skyway in Inskip. Yellow Pine Forest. 4800 ft. 1463 Comment
  CHSC4675  Calochortus albus R. Carter 1966-4-30 385 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  CHSC2230  Calochortus coeruleus N. Maxwell 1929-4-28 Butte Paradise. 548 Comment
  RSA4215  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CHSC104827  Calochortus luteus Lowell Ahart 2010-6-1 16758 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  CHSC33143  Calochortus luteus J. D. Jokerst 1981-5-14 1324 Butte Top of North Table Mt ca 300 M north of Cherokee Rd at the west edge of the mountain. Comment
  CHSC11053  Calochortus monophyllus Lowell Ahart 1966-3-13 Butte Near Enterprise. 182 Comment
  CHSC82634  Calochortus monophyllus Tara Morgan 2002-4-23 35 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail. On the side of the trail. 414 Comment
  JEPS119588  Calochortus monophyllus Lowell Ahart 2012-4-9 17847 Butte About 5 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  HSC43135  Calochortus monophyllus Maralyn O'Meara 1974-4-20 284 Butte Cherokee-Table Mtn. Rd., 1 mi. S of Cherokee 305 Comment
  UC119870  Calochortus nudus Mrs. R. M. Austin Jul 1896 22 Butte Colby Comment
  CAS-BOT-BC493342  Calochortus superbus Marion Ownbey; Gerald B. Ownbey 1946-6-25 2943 Butte Along Bean Creek Road Comment
  CHSC12120  Calochortus tolmiei M. F. Smith 1972-4-15 9 Butte On Big Bend Road, 2 1/2 miles south of intersection with highway 70. 457 Comment
  CHSC67733  Calochortus tolmiei James D. Jokerst 1979-4-6 198 Butte 400 ft S of corners of sections. T. C. Hunt property SE of Pulga Rd. Comment
  SEINET12048539  Calochortus tolmiei Unknown 1984-1 9 Butte ca 1.8 mi S of Concow Reservoir & 0.2 mi S of Jordan Hill Rd, along W side of Concow Rd 457 Comment
  UC436309  Caltha biflora E. B. Copeland June, 1930 Butte Jonesville; Willow Creek Meadow 1550 Comment
  UC194200  Calycadenia fremontii H. M. Hall 1914-7-18 9757 Butte 5 mi e of Chico; Little Chico Creek 152 Comment
  CAS-BOT-BC270006  Calycadenia multiglandulosa Lowell Ahart 1983-6-21 4086 Butte Found along Bloomer Hill Road, about 1.25 miles W of the Oroville Quincy Highway, about 15 miles NE of Oroville 450 Comment
  CAS-BOT-BC270007  Calycadenia multiglandulosa Lowell Ahart 1976-9-18 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC41241  Calycadenia multiglandulosa J. D. Jokerst 1985-5-24 2027 Butte Cherokee area just south of Campbell Flat and east of Table Mt. In my backyard. Comment
  HSC103922  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  CHSC108165  Calycadenia oppositifolia L. P. Janeway 2011-8-17 10657 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  CHSC45090  Calycadenia oppositifolia L. P. Janeway 1988-6-19 2815 Butte Ca 100 ft (elev.) above Honey Run Rd, 2.6 mi from Humbug Rd, and near powerlines (3-wire, wooden pole). 243 Comment
  LA203135  Calycadenia oppositifolia A. A. Heller; 1926-5-22 13940 Butte aong the Richardson Springs Road 3 mi. N of Chico Comment
  SBBG128090  Calycadenia oppositifolia J. Dittes, L. Ahart, S. Green, J. Guardino 2003-5-27 2003 -32 Butte Cascade Range foothills, upper Bidwell Park, ca. 6.7 air-mi NE of Chico, 2.5 air-mi NE of Horseshoe Lake, on cut rd bank and slope on N side of main rd, just W of Parking Lot-R 228 Comment
  UC1094002  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e of Pentz (canyon of W Branch of N. Fork of Feather River); N. Fork of Feather River 182 Comment
  UC194208  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Rd. 335 Comment
  SEINET10473677  Calycadenia oppositifolia Lowell Ahart 1985-5-15 Ahart 4979 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  UC1971697  Calycadenia pauciflora 1981-5-23 2185 Butte 0.5 mi W of Hwy 99, 0.5 mi N of Broyles Road, ca. 10 mi N of Chico 58 Comment
  JEPS19840  Calycadenia truncata Rimo Bacigalupi with Howard Whisler 1957-7-26 6040 Butte 3.1 mi below and s of, e side of Butte Creek Canyon Nimshew; Butte Creek Canyon 365 Comment
  CDA10584  Calycadenia truncata subsp. scabrella T. C. Fuller 1959-7-6 Butte Highway 40A, 7.5 miles north of Oroville. 0 Comment
  SEINET10904845  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-10-5 Taylor 2231 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-BC275383  Calycadenia truncata var. truncata John Thomas Howell 1961-9-22 36772 Butte N Fork of Feather RIver, 12 miles from Oroville 213 Comment
  CAS-BOT-BC90921  Calycanthus occidentalis Lowell Ahart 1966-5-17 s.n. Butte Honey Run Road, near Chico. 152 Comment
  CHSC113514  Calyptridium monospermum Lowell Ahart 2014-7-7 19604 Butte In a large disturbed area in the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC43717  Calyptridium monospermum Vernon Oswald 1983-6-22 727 Butte Calif. Hwy. 32 2.8 mi n-e of Forest Ranch. 899 Comment
  CHSC9702  Calyptridium monospermum Nancy Mosman 1971-7-3 61 Butte In meadow along Hwy 32 ca. 0.3 mi n of Butte Meadow Ranger Station. 1371 Comment
  UC203617  Calyptridium monospermum A. A. Heller 1914-6-24 11512 Butte w side of Sierra Nevada at West Branch; Sierra Nevada 1036 Comment
  JEPS113310  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. Comment
  POM219251  Calystegia malacophylla H. F. Copeland 1930-7-20 1389 Butte Jonesville. Comment
  UC600769  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1930-7-20 Butte Jonesville Comment
  CHSC82490  Calystegia occidentalis subsp. occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9734 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  JEPS95023  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte about 2 air mi ne of Stirling City (s side of dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  RSA754848  Calystegia occidentalis subsp. occidentalis L. Ahart 2009-5-30 15775 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 380 Comment
  CHSC68904  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte South side of the dirt road, southeast of cCold 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
  RSA4633  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  RSA37526  Camissonia tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Highway 97, Butte Creek Comment
  UC454113  Campanula prenanthoides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC600503  Campanula prenanthoides H. F. Copeland 1924-8-11 599 Butte Jonesville Comment
  SEINET10840336  Campanula prenanthoides Taylor 1977-6-26 Taylor 1370 Butte On south side of Ponderosa Way, about 3 miles east of Forest Ranch 732 Comment
  UC177576  Campanula scouleri H. M. Hall 1914-7-1 9798 Butte near Butte Meadows (Sierra Nevada Mountains); Sierra Nevada Mountains 1280 Comment
  UCD114531  Cardamine Robert E. Preston 1983-2-7 380 Butte above the SW bank of McCabe's Creek, at its junction with Lumpkin Road, 10 miles E of Oroville. 371 Comment
  CAS-BOT-BC37267  Cardamine breweri Clarence Roy Quick 1963-7-16 63 50 a Butte Sierra Nevada. Section Corner Meadow, east of Pulga. Feather River Canyon. 1463 Comment
  CHSC33220  Cardamine breweri R. A. Schlising 1981-6-11 4072 Butte N of Butte Meadows in region of Cherry Hill. North of Butte Creek and west of Humboldt Road. Comment
  CHSC34481  Cardamine oligosperma C. S. Phillips 1976-4-28 13 Butte Ca. 70 yds. s of Butte Creek and 0.3 mi. w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  RSA715722  Cardamine oligosperma L. P. Janeway 2005-3-1 8335 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road 134 Comment
  RSA769604  Cardamine oligosperma L. Ahart, John Dittes 2009-3-20 1505 Butte Open area along Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  CHSC62722  Cardamine pachystigma B. Castro 1993-3-31 461 Butte Ca 1.5 mi E of Mtn House, on N side Four Mile Ridge Road (or USFS Rd 22N33), 0.4 mi W of its jcn with the Oro-Quincy Hwy. On ridgetop. 944 Comment
  CHSC91981  Cardamine pachystigma LeRoy E. Detling 1935-4-18 1634 Butte 15 miles north of Oroville, North Fork Feather River. Comment
  CHSC32739  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-4-14 3534 Butte W side of Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 914 Comment
  RSA699523  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east side addition along Hwy 32. Along Guardian Trail north of Disk Golf Course 314 Comment
  CHSC52745  Carex L. P. Janeway 1988-7-29 3134 Butte Near West Branch Feather River at crossing of road into Coon Hollow. 1615 Comment
  JEPS120144  Carex Lowell Ahart 2012-6-14 18190 Butte On the south side of path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  SEINET10935491  Carex Mary Susan Taylor 1981-5-6 Taylor 3626 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
  JEPS122085  Carex angustata Lowell Ahart 2014-7-13 19641 Butte About 80 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  SEINET10644691  Carex athrostachya A. Arthur Heller 1915-6-25 Heller 12018 Butte Chico Meadows in the Sierra Nevada, wet places. 1219 Comment
  CHSC2105  Carex barbarae P. Mason 1937-5-15 Butte Fish wheel on Butte Creek. 91 Comment
  CHSC47063  Carex barbarae L. P. Janeway 1989-5-13 3235 Butte Grassy mdw on E side of Concow Reservoir; along Concow Rd 5.2 mi N of Hwy 70. 629 Comment
  CHSC53708  Carex barbarae L. P. Janeway 1988-5-29 2703 Butte Low in canyon of Little Chico Cr, ca 2 air mi S of Ten Mile House. 243 Comment
  CAS-BOT-BC19199  Carex barbarae L. P. Janeway 1988-6-25 2853 Butte Along small creek below Hwy 191 (Clark Road), 3.0 miles north of Durham-Pentz Road. 176 Comment
  RSA0056155  Carex cyrtostachya L. P. Janeway, Lowell A. Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CAS-BOT-BC31777  Carex cyrtostachya Lowell Ahart 1988-6-29 6108 Butte Along Bean Creek, at the bridge on Bean Creek Road, ca 1/2 mi SW of Johnson Ranch, 609 Comment
  SEINET8215214  Carex cyrtostachya Unknown 2011-8-5 25715 Butte Forest Road 20N03 (Moreville Ridge Road), 2 air miles southeast of Sugar Pine Point, Pinkard Creek drainage, northern Sierra Nevada Highlands. 1075 Comment
  CAS-BOT-BC34955  Carex densa L. P. Janeway 1988-6-25 2855 Butte Ridgetop above Clark Road (Hwy 191) 4.9 miles N of Durham-Pentz Road. 381 Comment
  CHSC101124  Carex densa Lowell Ahart 2009-5-23 15730 Butte On the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC42370  Carex densa Lowell Ahart 1987-5-10 5610 Butte On the banks of Wyandotte Creek, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC84735  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  JEPS114978  Carex densa Lowell Ahart 2008-6-13 14819 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  SEINET7556724 Image available Carex densa Unknown 2003-5-8 7780 Butte Richardson Springs 7.5' quad. Sacramento Valley. North end of Chico, along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  RSA0045625  Carex divulsa subsp. divulsa Lowell A. Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 64 Comment
  CHSC52858  Carex echinata subsp. echinata L. P. Janeway 1988-7-2 2944 Butte Marsh/meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CAS-BOT-BC19995  Carex feta Lowell Ahart 1980-7-4 2464 Butte Along Forbestown Road. 750 Comment
  CAS-BOT-BC20001  Carex feta J. D. Jokerst 1984-5-19 2025 Butte At the edge of Highway 70. Comment
  CAS-BOT-BC19999  Carex feta L. P. Janeway 1988-7-2 2954 Butte Upper reach of Brush Creek, about 1.5 mile S of town of Brush Creek. 952 Comment
  CAS-BOT-BC21241  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville. 1524 Comment
  CHSC104784  Carex fracta L. P. Janeway 2010-6-19 10027 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC55436  Carex fracta L. P. Janeway 1991-6-8 3993 Butte Side ravine on south side of Montgomery Bar Ravine, ca 0.3 mi from Lake Oroville high water mark. 377 Comment
  CHSC102376  Carex gracilior Lowell Ahart 2009-6-18 15911 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC86534  Carex gracilior L. P. Janeway; John Hunt 2003-6-13 7829 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 230 m north of the north end of En-terprise Bridge. Dirt roadside at intersection of Springer Road (Road 19N31X) and Feather Falls Road (Lumpkin Ridge Road). 305 Comment
  CHSC45052  Carex heteroneura var. heteroneura Vernon Oswald 1987-6-9 2962 Butte Scotts John Creek where it crosses the connector road between Humboldt and Humbug roads, ca. 2.5 mi e of Jonesville. 1755 Comment
  CHSC45257  Carex heteroneura var. heteroneura L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3083 Butte Along Scotts John Cr 2.7 mi N of the Butte Cr rd. 1920 Comment
  CHSC42814  Carex hirtissima L. P. Janeway 1987-6-13 2214 Butte Mdw just NE of Jct of Concow Cr and the rd to Flea Mtn. 1188 Comment
  SEINET7561551 Image available Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Pulga 7.5' Quad. High Cascade Range. Flea Valley, meadow at head on Concow Creek. 1116 Comment
  SEINET7561559 Image available Carex hirtissima Lowell Ahart 1985-6-30 5078 Butte Near road to Forbestown Res. East of the dirt road to the Forbestown Res, about 2 1/2 miles north-east of Forbestown. 869 Comment
  CAS-BOT-BC7558  Carex integra H. F. Copeland 1946-7-4 s.n. Butte Jonesville. Comment
  CHSC105815  Carex integra Lowell Ahart 2010-9-21 17218 Butte Open meadow like area, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  JEPS121954  Carex integra Lowell Ahart 2014-7-7 19591 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET4285869 Image available Carex jonesii L. Janeway, Gog, L 2008-1 3186 B Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC7783  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  UC1133395  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte 3 mi se of Butte Meadows (Lassen National Forest); Lassen National Forest 1554 Comment
  CHSC113960  Carex lemmonii Lowell Ahart 2014-7-16 19676 Butte North part of a large wet meadow (some bog), about 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS87493  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte about 1/4 mi w Lost Creek Reservoir (on the s side of the dirt road) 1036 Comment
  CHSC33771  Carex multicaulis J. D. Jokerst; M. S. Taylor 1980-4-18 606 Butte Nimshew Ridge, S of Nimshew Rd 1.0 mi S of Nimshew where road makes sharp turn to the N. 701 Comment
  UCD40402  Carex multicaulis Rodney Gale Myatt 1971-6-13 725 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CAS-BOT-BC32155  Carex multicaulis John Thomas Howell 1955-6-14 30469 Butte De Sabla Comment
  CAS-BOT-BC32159  Carex multicaulis L. P. Janeway 1987-5-10 2054 Butte Stirling City quad, above the road near the bridge over West Branch Feather River 754 Comment
  CAS-BOT-BC119743  Carex nebrascensis L. P. Janeway 1987-7-4 2411 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC52256  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2496 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Gently sloping meadows on N side of the creek. 1661 Comment
  CHSC38897  Carex nudata Vernon Oswald 1983-5-27 572 Butte Upper Bidwell Park, Chico, near the retaining wall along Chico Creek at the e end of Centennial Ave. 85 Comment
  CHSC41301  Carex subfusca S. C. Morey 1983-7-22 537 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS117693  Carex vernacula Lowell Ahart 2010-9-28 17264 Butte On the 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 (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC47131  Carex vesicaria L. P. Janeway 1987-6-27 2347 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along the Concow Rd. 1478 Comment
  CHSC111130  Carpenteria californica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18201 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
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Feb 9 2019
  CHSC4603  Castanea dentata J. Potter 1967-6-30 314 Butte Catkins axillary near the ends of branches. Trees lining Sowilleno between Citrus and Arbutus, Chico State College Campus, Chico. Comment
  UCR133594  Castilleja applegatei H. F. Copeland 1927-9-2 952 Butte Jonesville 1524 Comment
  CAS-BOT-BC249590  Castilleja applegatei subsp. pinetorum John Thomas Howell 1962-6-15 37501 Butte Magalia 731 Comment
  CHSC55411  Castilleja applegatei subsp. pinetorum Dennis W. Morris 1991-4-7 12 Butte 9 mi northeast of Chico at Hwy 32 and Crown Point Road; west side of Crown Point Road. 502 Comment
  CHSC50843  Castilleja arachnoidea Vernon Oswald; Lowell Ahart 1990-7-19 4367 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 2011 Comment
  JEPS80696  Castilleja arachnoidea R. Banchero 1981-7-14 Butte about 5 air mi e Jonesville (Humbug Summit); , Jonesville Quad. 2057 Comment
  CHSC114981  Castilleja attenuata Lowell Ahart 2015-4-18 20043 Butte On the east side of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CHSC43168  Castilleja attenuata B. E. Olson 1975-5-5 17 Butte Ca. 300 m n of Helltown Bridge, ca. 200 m w of Butte Creek, 1.6 km n of Centerville, 22.5 km ene of Chico. 190 Comment
  JEPS81481  Castilleja attenuata M. S. Taylor 1982-4-28 4355 Butte ca 12 mi sw Gridley (Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd); Pennington Quad. 21 Comment
  RSA0058982  Castilleja attenuata Lowell A. Ahart 2012-4-17 17875 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  UCD73007  Castilleja attenuata 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
  UCR237299  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  SFV10459  Castilleja attenuata M. L. Vincent 1965-4-16 635 Butte Pentz Road, 0.5 miles south of Pentz store. Comment
  CHSC3657  Castilleja exserta Robert D. Briggs 1966-4-12 R- 117 Butte 3 miles south of downtown Chico. Comment
  CHSC90141  Castilleja exserta subsp. exserta Dennis Chambers 1981-4-24 16 Butte Cal State Chico Range approximately 1.7 mi north on Meridian Road off of Hwy 99, east 0.7 mi on north side of road. 65 Comment
  CHSC97368  Castilleja lacera Paul Maslin 2005-5-1 47 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106096636E 4409708N. 268 Comment
  JEPS107548  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville 759 Comment
  UCR188712  Castilleja lacera Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC73821  Castilleja lineariloba B. Castro 1998-5-11 788 Butte On W-facing roadcut slopes above the Oro-Quincy Hwy, 4 mi e of its jcn with Forbestown Rd and 1.1 rd mi E of Bidwell Bar Bridge, by Lake Oroville. 313 Comment
  CAS-BOT-BC241129  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1219 Comment
  POM43181  Castilleja subinclusa C. C. Bruce 1898-05 2439 Butte Butte Creek. Comment
  SEINET10448633  Caulanthus lasiophyllus var. lasiophyllus Lowell Ahart 1991-5-8 Ahart 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S2. 61 Comment
  CAS-BOT-BC47959  Ceanothus integerrimus H. F. Copeland 1920-8-2 198 Butte Jonesville 1219 Comment
  CAS-BOT-BC50822  Ceanothus integerrimus John Thomas Howell 1973-7-9 49698 Butte Sierra Nevada - near Bear Ranch Creek, Feather River Highway 457 Comment
  SBBG32273  Ceanothus integerrimus L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  UC1070777  Ceanothus integerrimus J. E. Sowder 1933-7-25 119 Butte just s Thompson's; Chico Quad. 1280 Comment
  SEINET13945935 Image available Ceanothus integerrimus Lewis S. Rose 1955-1 55099 Butte Paradise; 1700 ft alt. 518 Comment
  CHSC31437  Ceanothus integerrimus var. californicus L. Ahart 1980-9-10 2645 Butte Along edge of rd ca. 7 mi e of Millsap Bar, ca. 32 mi ne of Oroville. 1200 Comment
  CHSC35972  Ceanothus integerrimus var. californicus M. S. Taylor 1982-5-23 4508 Butte In granite on e side of Arch Rock Tunnel, n side of Hwy70, ca. 0.5 mi w of Butte-Plumas county line. 487 Comment
  POM196019  Ceanothus integerrimus var. macrothyrsus E. B. Copeland 1929-7-14 838 Butte Jonesville. 1650 Comment
  CHSC1512  Ceanothus lemmonii 1937-5-1 Butte Forest Ranch. 548 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
  RSA126019  Ceanothus lemmonii E. K. Balls 1957-5-22 22508 Butte Hwy 40 , 18 miles NE from Oroville 701 Comment
  RSA21541  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8727 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  RSA300946  Ceanothus lemmonii D. C. Michener 1982-7-28 4141 Butte 4.4 miles SE of jct with 32 on Garland road, 3.1 miles NW of jct of Powellton road and Skyway road near De Sabla Comment
  UC175603  Ceanothus lemmonii A. A. Heller 1913-6-7 10810 Butte near Stirling 1074 Comment
  CAS-BOT-BC83773  Ceanothus prostratus D. O. Burge 2007-5-11 921 a Butte East shore of Lake de Sabla 850 Comment
  RSA300948  Ceanothus prostratus D. C. Michener 1982-7-28 4140 Butte Along 32, 3.5 miles NE of Forest Ranch (at Nopel road), Yellow pine forest Comment
  UC426918  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  SEINET10493651  Ceanothus prostratus Mary Susan Taylor 1976-4-4 Taylor 1057 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
  SEINET12210558  Ceanothus prostratus Unknown 1975-1 1 Butte Sawmill Peak, 2 mi s of w branch of Feather River 1219 Comment
  CHSC108969  Cedrus libani var. libani Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17816 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CHSC111741  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wess Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  JEPS117916  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Upper Bidwell Park, Chico Cascade Range Foothills (north side of Big Chico Creek 455 m west of Day Camp) 91 Comment
  CHSC109671  Celtis occidentalis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west of the parking area, Lower Bidwell Park, Chlico. 71 Comment
  SEINET10474147  Centaurea calcitrapa Mary Susan Taylor 1980-8-30 Taylor 3323 Butte T20N R4E nw border sec 23, Oroville Dam quad. E Table Mt, in Potter Ravine, along creek at dirt rd crossing, between the High Rocks and Box Hall Flat, ca. 2 air mi E of Oregon City on Table Mt, 8 mi N of Oroville. 305 Comment
  CHSC293  Centaurea melitensis M. Roberson 1956-6-4 Butte Near Paradise along Skyway. 548 Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  JEPS117540  Centaurium venustum Lowell Ahart 2010-6-9 16781 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  JEPS46925  Centaurium venustum H. A. Dutton 1921-1 Butte e of Chico Comment
  CHSC30748  Centromadia fitchii M. S. Taylor 1980-8-30 3321 Butte Vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi e of Oregon City, ca. 5.5 air mi n of Oroville. 365 Comment
  SBBG19383  Centromadia fitchii H. F. Copeland 1937-7-30 1645 Butte near Pentz Comment
  CHSC25317  Centromadia pungens M. Hayes; Warner, Schlising 1977-8-23 51 Butte Drainage of Butte Creek where this intersects Highway 162. Near Butte-Glenn county line. 55 Comment
  UCD121534  Cephalanthus occidentalis L. E. Hazeltine 1916-7-7 s.n. Butte Chico. Comment
  CHSC21040  Cephalanthus occidentalis var. californicus M. S. Taylor 1975-7-9 834 Butte Scattered on E side of Big Chico Creek, Bare hole, Upper Bidwell Park, Chico. 152 Comment
  CHSC90926  Cerastium glomeratum Lowell Ahart 2005-4-14 11715 A Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC98979  Cerastium glomeratum Lowell Ahart 2008-5-12 14751 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  RSA590212  Cerastium glomeratum Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7231 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC46613  Ceratophyllum demersum Vernon Oswald 1989-8-1 3910 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). In Little Dry Creek at the bridge ca. 1 mi n of Gridley-Colusa Hwy. 18 Comment
  CHSC107394  Cercis occidentalis Blake McSorley 2010-4-6 Butte Dye Creek Preserve. 135 Comment
  CHSC40326  Cercocarpus betuloides var. betuloides Lowell Ahart 1985-3-4 4843 Butte Near Kunkle Red., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC277631  Chaenactis glabriuscula var. megacephala 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 550 Comment
  JEPS115034  Chamaesyce maculata Lowell Ahart 2007-10-31 14520 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  UC177570  Chamaesyce maculata H. M. Hall 1914-8-2 9835 Butte near Marysville 22 Comment
  CHSC26627  Chamaesyce ocellata M. P. Hayes 1977-9-12 124 Butte In the area of the gardens on Butte College Campus at the corner of Pentz and Clark roads. 90 Comment
  CHSC102401  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC108139  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC94834  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-10-8 13440 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
  CDA13321  Cheilanthes gracillima G. F. Hrusa, T. D. Wilfred 1996-7-9 13167 Butte Sierra Nevada; approx. 0.5 m. E of bridge over Marble Creek on USFS N60. Comment
  CHSC92612  Cheilanthes gracillima L. P. Janeway 2005-5-29 8411 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kim-shew Creek drainage. Steep east-facing slope. 1478 Comment
  CHSC60679  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-3-18 5232 Butte Near rimrock on the N side of Nugen Canyon, on the SE side of Neal Rd., about 0.25 mi. south of 'The Narrows'. 121 Comment
  JEPS114998  Chenopodium pumilio Lowell Ahart 2007-11-3 14566 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
  UC1713741  Chenopodium pumilio Daniel Cleveland Aug. 1882 Butte West Branch Comment
  SEINET10479078  Chenopodium pumilio Lowell Ahart 1985-10-12 Ahart 5203 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  RSA0058878  Chenopodium strictum var. glaucophyllum Lowell A. Ahart 2008-7-23 15147 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC11806  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville. 1600 Comment
  SEINET10874402  Chimaphila umbellata var. occidentalis Mary Susan Taylor 1978-9-9 Taylor 1907 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CDA1901  Chloris virgata L. Ahart 2004-6-29 11147 Butte On the E side of Lone Tree Road, about 1/2 mi. N of Palermo Road, about 1 1/2 mi. (air) NW of Palermo, about 5 mi. (air) south of Oroville. Comment
  CHSC103702  Chlorogalum angustifolium Lowell Ahart 2010-5-14 16639 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS50846  Chlorogalum pomeridianum var. pomeridianum D. A. Hutt and H-M. Beard Aug 2 1965-Aug 3 1967 57 .838 Butte Comment
  UC370341  Chorizanthe pungens var. pungens C. C. Parry 1883-1 Butte Chico Comment
  CHSC103687  Chorizanthe stellulata Lowell Ahart 2010-4-30 16604 Butte Open area along a ridge, on both sides of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  SD8111  Chorizanthe stellulata Dr. C. C. Parry May 1882 Butte Chico Comment
  UCD99935  Chorizanthe stellulata Glen Holstein 1980-5-4 103 Butte ca. 4 miles southwest of town of Paradise, immediately north of Skyway Road above junction of Butte and Little Butte Creeks. 396 Comment
  CAS-BOT-BC36369  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  CHSC26733  Cicendia quadrangularis M. S. Taylor; M. Hayes 1978-4-14 1564 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  CHSC55308  Cinna latifolia Lowell Ahart 1991-8-25 6708 Butte Along Haphazard Creek, about 1 mile north-west of Rogers Cow Camp, west of Oroville-Quincy Hwy, about 6 miles north-east of Brush Creek. 1219 Comment
  RSA126604  Cinna latifolia H. S. Yates 1936-8-13 6098 Butte Butte Meadow. 1341 Comment
  CHSC11784  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 386 Butte Jonesville. 1500 Comment
  UC1609301  Cirsium arvense Lowell Ahart 1993-9-8 7175 Butte about 1 mi se Snow Mountain (s side of dirt road) 1981 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  CDA1322  Cirsium occidentale var. candidissimum T. C. Fuller 1959-7-6 2765 Butte 2 mi. S of Pulga; Hwy 40 Alt. ( nr. Feather River). 0 Comment
  CHSC37273  Cirsium vulgare L. Ahart 1982-8-10 3739 Butte Around rice field, Peter Ahart Ranch, ca. 2 1/2 mi n and 1/2 mi e of Honcut. 50 Comment
  CHSC38338  Cirsium vulgare Vernon Oswald 1982-12-17 22 Butte Bidwell Park, Chico, 400 ft nw of the parking lot at Diversion Dam. 134 Comment
  CAS-BOT-BC228750  Cistanthe umbellata A. A. Heller 1913-6-7 10804 Butte Near Stirling 1074 Comment
  CAS-BOT-BC228761  Cistanthe umbellata Lowell Ahart 1983-7-29 4247 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 900 Comment
  HSC43115  Clarkia arcuata Maralyn O'Meara 1974-4-20 295 Butte Table Mtn. 305 Comment
  UC1071946  Clarkia arcuata H. and M. Lewis 1951-5-19 826 Butte 1.6 mi below Nimshew (Nimshew to Butte Creek Canyon) Comment
  CAS-BOT-BC163578  Clarkia biloba subsp. biloba Mrs. H. C. Cantelow 1940-5-10 4033 Butte 7 mi. E. of Oroville. Old rd. to Bucks Lake Comment
  CHSC35136  Clarkia biloba subsp. brandegeeae R. Schlising; R. Banchero 1980-6-6 3646 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake; roadside bank. 304 Comment
  CHSC89904  Clarkia biloba subsp. brandegeeae N. L. Jurjavcic; M. K. Hayden 2004-6-9 Butte Northern Sierra Nevada Foothills. Located along the access roadside adjacent to Miners Ranch Canal, near Ponderosa Dam. 304 Comment
  JEPS113205  Clarkia concinna subsp. concinna Lowell Ahart 2007-5-22 13913 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CDA38048  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CAS-BOT-BC164524  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-1 63 -47 Butte Jarbo Pass, 6.2 miles northeast Comment
  CHSC88629  Clarkia gracilis subsp. albicaulis Linnea Hanson 1994-6-13 349 Butte Plumas National Forest. Poe Power House Road. 365 Comment
  SD7361  Clarkia gracilis subsp. albicaulis R. M. Austin 1880-1 Butte 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
  SEINET12193695  Clarkia purpurea J. R. Birmingham 1972-1 2 Butte near Horseshoe Lake, Bidwell Park, Chico 181 Comment
  RSA712756  Clarkia purpurea subsp. purpurea L. P. Janeway 2005-5-17 8393 Butte Sacramento Valley; 0.5 km west of Larkin Road, 1.7 km south of Hwy 162, about 0.5 km northeast of Thermalito Afterbay 43 Comment
  JEPS107749  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  JEPS119894  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2012-6-5 18165 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  SEINET10906911  Clarkia purpurea subsp. quadrivulnera Heidi H. Schmidt 1993-6-15 Schmidt 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Mixed hardwood forest. 880 Comment
  CAS-BOT-BC164794  Clarkia rhomboidea L. P. Janeway 1991-6-1 3983 Butte West-facing cut-bank of Dark Canyon Road 2.4 mi south of Big Bend Road/Parkhill 396 Comment
  CHSC59110  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Bend Road/Parkhill. Southwest-facing road-cut. 512 Comment
  RSA448333  Clarkia rhomboidea L. Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  JEPS117242  Clarkia unguiculata Lowell Ahart 2010-6-1 16759 Butte On the north side of the Guardians Trail, about one mile east of the power lines, Upper Bidwell Park, about 3 miles (air) east of Chico 180 Comment
  SEINET9116151  Claytonia lanceolata D. W. Taylor 2002-7-3 18220 Butte FR 22N27, ca 0.5 mile W from junction with FR 22N29 (ca 1 air mile NW of Little Grass Valley dam). 1707 Comment
  CHSC41312  Claytonia palustris S. C. Morey 1983-7-22 548 Butte Cherry Hill Meadow On n side of Humboldt Road, ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC43719  Claytonia palustris Vernon Oswald 1983-6-22 738 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  CHSC95189  Claytonia palustris R. D. Fischer 2005-6-5 825 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CHSC34767  Claytonia parviflora subsp. parviflora H. A. McLane 1980-4-25 17 Butte N of Ponderosa Way, Plumas Natl. Forest. 377 Comment
  CAS-BOT-BC439754  Claytonia perfoliata Lowell Ahart 1982-4-24 3369 Butte About 3/4 mile south-west of the Myers home, Myers Ranch, Sutter Buttes 50 Comment
  CHSC32679  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-24 3440 Butte S side of Hwy 70 just e of Heinz Creek, ca. 1 mi e of Pulga. Comment
  CHSC56072  Claytonia rubra subsp. rubra L. P. Janeway 1987-5-28 2108 Butte 4-Trees Road 1.6 mi west of Oro-Quincy Hwy, at side road 23N12Y. 1463 Comment
  CAS-BOT-BC91354  Clematis lasiantha Lewis S. Rose 1963-6-2 63073 Butte 9 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC84640  Clematis lasiantha Matt Quinn 2001-4-4 8 Butte On mid-slope of north facing slope of Honey Run Creek. Approximately 1/2 mile upstream of confluence with Little Butte Creek, 200 feet upslope from creek. 198 Comment
  CHSC95205  Clematis lasiantha R. D. Fischer 2004-3-28 806 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail. 335 Comment
  CHSC2252  Clintonia uniflora 1932-6-26 Butte Rag Dump. 1066 Comment
  UC103369  Collinsia parviflora Mrs. R. M. Austin May 1896 258 Butte Little Chico Creek Comment
  UCD123666  Collinsia sparsiflora Michael A. Vincent; Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. Comment
  CHSC54161  Collinsia sparsiflora var. collina Lowell Ahart 1991-4-8 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  CDA31999  Collinsia tinctoria L. Ahart 2008-5-3 15785 Butte Around large rocks, north of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 0 Comment
  CHSC40882  Collinsia tinctoria Lowell Ahart 1985-5-15 4977 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
  CHSC11958  Collomia grandiflora E. B. Copeland 1931-7-14 677 Butte Jonesville. 1550 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  CHSC11956  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. On gravel bars along Butte Creek. 1500 Comment
  CHSC29378  Collomia tinctoria R. A. Schlising; R. Banchero 1980-6-12 3691 Butte 0.25 mi s of Tehama Co. line on Hwy 32. Roadside. 1121 Comment
  CHSC93968  Collomia tinctoria R. D. Fischer 2004-6-20 749 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  UC727026  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia Comment
  CHSC31892  Conium maculatum L. Ahart 1978-4-27 1673 Butte On damp soil by old sheep barn. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC286063  Conyza canadensis A. A. Heller 1914-8-13 11680 Butte 8 miles north of Oroville Comment
  UC398907  Corallorhiza maculata E. B. Copeland 1929-7-22 356 Butte Jonesville 1550 Comment
  CAS-BOT-BC237925  Cordylanthus Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS115716  Cordylanthus pilosus subsp. hansenii Lowell Ahart 2009-8-3 16253 Butte On the west side of Ten Mile House Road, jabout 30 yards east of Big Chico Creek, 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 234 Comment
  JEPS66509  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2766 Butte Nimshew (site), nw of Magalia 853 Comment
  JEPS66510  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2767 Butte South entrance Manzanita Street (to Stirling City) 1066 Comment
  POM219138  Cordylanthus tenuis subsp. viscidus H. F. Copeland 1928-8-14 382 Butte On fire-swept ridge between Jones Creek and Scotch John Creek. Neighborhood of Jonesville. Comment
  CHSC20128  Cornus florida M. S. Taylor 1975-5-6 557 Butte Ca. 5 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  UC195372  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  CAS-BOT-BC209588  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 Comment
  UC426924  Cornus sericea subsp. sericea E. B. Copeland 1930-6-23 431 Butte Jonesville 1500 Comment
  CAS-BOT-BC210518  Cornus sessilis Rimo Bacigalupi 1934-9-2 2325 Butte West fork of Campbell Creek along Chico-Butte Meadows Road, 9 mi. SW. of Butte Meadows 914 Comment
  POM77766  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Lomo Comment
  RSA32004  Cornus stolonifera A. A. Heller 1938-7-20 15282 Butte Upper end of Snag lake 7 miles east of Chaparral on the Humbug Road. 1524 Comment
  CHSC87964  Coronilla varia Lowell Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  CHSC43248  Corydalis caseana subsp. caseana Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5916 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  UC1303041  Corydalis caseana subsp. caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  JEPS120054  Cotoneaster lacteus Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17854 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. Comment
  JEPS107341  Cotula australis Lowell Ahart 2005-4-2 11680 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
  SEINET10473719  Cotula australis Lowell Ahart 1983-4-1 Ahart 3916 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  JEPS117559  Cotula coronopifolia Lowell Ahart 2010-6-20 16818 Butte Bottom 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
  JEPS120654  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  CHSC82231  Crassula connata Lowell Ahart 2002-4-14 9481 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  UCSB45763  Crassula connata Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Table Mt. Road Comment
  SEINET10449715  Crassula muscosa Mary Susan Taylor 1980-3-15 Taylor 2381 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CHSC46740  Crassula saginoides Lowell Ahart 1978-5-15 1725 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC35689  Crassula tillaea J. D. Jokerst 1982-4-12 1522 Butte W side hwy 149, 3/10 mi N of hwy 70. Comment
  UCD72993  Crassula tillaea 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
  CHSC110111  Crataegus monogyna L. P. Janeway 2012-3-21 10817 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  SEINET10474586  Crepis pleurocarpa Lowell Ahart 1985-6-30 Ahart 5087 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 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
  CHSC38654  Crucianella angustifolia Vernon Oswald 1983-6-2 599 Butte Upper Bidwell Park, Chico, along Yahi Trail W of Brown's Hole. 195 Comment
  SEINET11091472 Image available Crucianella angustifolia Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-1 3282 Butte Peter Ahart Ranch, ca. 2.5 mi NNE of Honcut between Oroville & Marysville 30 Comment
  SEINET10968835  Crucianella angustifolia Mary Susan Taylor 1980-5-27 Taylor 2726 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 610 Comment
  CHSC30279  Crypsis schoenoides M. S. Taylor 1978-9-8 1882 Butte Along slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  SEINET10835341  Crypsis schoenoides Mary Susan Taylor 1978-9-8 Taylor 1882 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. Comment
  CHSC46451  Cryptantha affinis V. Oswald; L. Ahart 1989-6-27 3820 Butte Ridge east of Scotts John Creek, ca. 3.3 mi (air) e of Jonesville. 2042 Comment
  CHSC96816  Cryptantha affinis Lowell Ahart 2007-5-29 13926 Butte Near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 636 Comment
  SEINET10497262  Cryptantha affinis Lowell Ahart 1985-6-17 Ahart 5067 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC103215  Cryptantha crinita Paul Kirk 2010-5-25 102 Butte Bidwell-Sacramento River State Park, large gravel bar on the east side of Sacramento River just upstream of confluence with Big Chico Creek. UTM, Zone 10: E 590655, N 4394848. 36 Comment
  CHSC29968  Cryptantha flaccida R. A. Schlising 1979-5-8 3388 Butte E of Chico and SW of Paradise along Skyway. Comment
  CHSC33419  Cryptantha flaccida R. A. Schlising; J. D. Jokerst 1980-7-2 3820 Butte 1.4 mi S of junction of Nimshew and Centerville Roads at Nimshew, along Centerville Road. Comment
  SD240919  Cryptantha flaccida George K Helmkamp, E. A. Helmkamp 2012-4-14 18766 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70,near the Feather River (Palermo 7.5'Q) 46 Comment
  UC1177891  Cryptantha flaccida Malcolm A. Nobs 1950-5-13 668 Butte 5.5 mi ne junction of Highways 32 and 99E in Chico 60 Comment
  UC708010  Cryptantha intermedia McKee and Westover 1918-6-5 7 Butte Paradise 609 Comment
  SBBG28777  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte N Fork of Feather River, 3 mi S of Pulga 609 Comment
  CHSC46757  Cryptantha rostellata Lowell Ahart 1979-5-20 1878 Butte On a gravel bar along the edge of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  UC194024  Cryptantha rostellata C. C. Parry Apr 1887 Butte near Chico Comment
  UC857289  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  CHSC3021  Cupressus lusitanica Carl Pejsa 1958-4-19 34 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC85559  Cupressus macnabiana Clarence R. Quick 1959-8-17 59 -44 Butte Magalia Comment
  UCD69257  Cupressus macnabiana D. Sanchez-Mata; D. Sanchez-Mata and P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  UC1586521  Cuscuta californica Lowell Ahart 1991-9-6 6711 Butte 10 mi sw Gridley (n side of Rutherford Road, .12 mi w of Pennington Road, e of Parking Area 5); Gray Lodge Waterfowl Management Area 30 Comment
  CHSC38432  Cuscuta californica var. breviflora Vernon Oswald 1983-6-5 637 Butte Upper Bidwell Park, Chico, near rimrock of the north rim slightly e of Horseshoe Lake. 152 Comment
  JEPS110256  Cuscuta californica var. californica Lowell Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC31026  Cuscuta howelliana M. S. Taylor 1979-5-6 2008 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC33423  Cuscuta howelliana R. A. Schlising 1981-6-14 4082 c Butte Richvale Vernal Pools. 1/4 mi s of Jct. Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  UC196341  Cuscuta indecora A. A. Heller 1914-8-11 11677 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  CDA7735  Cuscuta japonica M. Brown 2007-11-27 PDR# 1328505 Butte Oroville, 3355 Fallbrook. 0 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
  SBBG119818  Cuscuta pentagona L. Ahart 2006-10-1 13388 Butte W of N Honcut Crk, ca. 2.5 mi N and 2.75 mi E of Honcut, ca. 12 air mi SE of Oroville 54 Comment
  UC478481  Cuscuta suksdorfii E. B. Copeland 1931-7-17 676 Butte near head of South Willow Creek; Jonesville 1700 Comment
  RSA4472  Cuscuta suksdorfii var. subpedicellata E. B. Copeland 1931-7-17 676 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  CHSC47968  Cycladenia humilis var. humilis Vernon Oswald 1987-5-21 2919 Butte Skyway 2.3 mi n of Inskip. 1584 Comment
  CHSC28503  Cymopterus terebinthinus var. californicus M. S. Taylor; J. Jokerst 1979-7-21 2160 Butte On Humboldt Peak, at Humboldt Summit. 2133 Comment
  JEPS119863  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC61342  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  JEPS108951  Cyperus bipartitus Lowell Ahart 2006-9-11 13297 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC109792  Cyperus difformis Lowell Ahart 2012-10-20 18513 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 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
  CHSC85757  Cyperus difformis G. F. Hrusa; T. D. Wilfred 1996-9-5 13564 Butte Butte Basin. In rice fields adjacent to Durnel Road north of Nelson Rd. [Lat./Long. on label is '39 degrees 34' N; 121 degrees 39' W']. 33 Comment
  CHSC39666  Cyperus eragrostis Lowell Ahart 1983-6-21 4102 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles northeast of Oroville. Section 30. 700 Comment
  CHSC68385  Cyperus eragrostis L. P. Janeway 1996-5-27 4980 Butte Along Durham-Pentz Road 0.7 mi east of Clark Road. 118 Comment
  CHSC84152  Cyperus eragrostis Lowell Ahart 2003-6-30 10334 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
  UC1100535  Cyperus eragrostis Herbert L. Mason 1945-9-19 12736 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CHSC113130  Cyperus erythrorhizos Lowell Ahart 2013-11-17 19267 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC66856  Cyperus erythrorhizos Vernon H. Oswald 1996-9-30 8291 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. Margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  SEINET3450848  Cyperus erythrorhizos Unknown 2003-6-30 10334 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  UCD169398  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CAS-BOT-BC114224  Cyperus flavescens John Thomas Howell 1959-9-20 34638 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  RSA724967  Cyperus flavescens L. Ahart 2006-10-8 13429 Butte 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 Hwy 70, about 0.5 mile north of the Cresta Power House. 610 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
  RSA695518  Cyperus fuscus L. Ahart 2000-7-23 8603 Butte About 12 mi (air) SW of Chico, near a large pond on the east side of the Sacramento River, NW of Parrott Landing, about 1 mi SE of Ord Ferry, about 2 mi SE of Ordbend. 32 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC38901  Cyperus niger Vernon Oswald 1983-6-7 649 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC43528  Cyperus niger Lowell Ahart 1979-9-8 2019 Butte Along the edge of old Highway 40, about 1/2 mile west of Oroville Dam, about 6 miles east of Oroville. 167 Comment
  CAS-BOT-BC113844  Cyperus niger Peter Rubtzoff 1978-8-6 9249 Butte Thermalito Forebay North Area in Lake Oroville State Recreation Area just off Hwy 70. Comment
  CAS-BOT-BC114076  Cyperus squarrosus Lowell Ahart 1987-7-3 5774 Butte Along the North Fork of the Feather River, near the Poe Power house, 271 Comment
  CHSC33631  Cyperus squarrosus R. D. Preston; R. A. Schlising 1981-6-21 29 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  CHSC45155  Cyperus squarrosus Lowell Ahart 1974-7-1 504 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC114077  Cyperus squarrosus Lowell Ahart 1974-7-1 s.n. Butte Bottom of a small wash, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC102739  Cyperus strigosus Lowell Ahart 2009-8-3 16256 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
  CHSC68413  Cyperus strigosus L. P. Janeway; D. Alexander, B. Castro, C. Oettinger, B. Clark 1986-9-26 1900 Butte Within the City of Chico; Lower Bidwell Park, along Big Chico Creek about 1/4 mi east of Hwy 99. 67 Comment
  CHSC81934  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CHSC94584  Cyperus strigosus Lowell Ahart 2006-9-11 13299 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS120166  Cyperus strigosus Lowell Ahart 2012-9-28 18470 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the Freeway, Lower Bidwell Park, Chico. Comment
  JEPS98272  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte 4 air miles SW of Oroville (Oroville Wildlife Area, 1/2 mi W of Pacific Heights Road) 42 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  NY621805  Cypripedium californicum L. Ahart 1987-6-9 5729 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
  CHSC28891  Cystopteris fragilis M. S. Taylor 1980-2-17 2365 Butte Ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SEINET3118821 Image available Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville 1550 Comment
  POM121176  Cystopteris fragilis C. C. Bruce 1897-05 1666 Butte Iron Canyon. Comment
  RSA692783  Cystopteris fragilis M. M. Boney 1897-1 4215 Butte Unspecified Comment
  SEINET10833642  Cystopteris fragilis Mary Susan Taylor 1976-5-5 Taylor 1118 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
  SEINET10906973  Cytisus monspessulanus Mary Susan Taylor 1981-5-5 Taylor 3613 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  SEINET10515557  Dactylis glomerata Mary Susan Taylor 1980-5-27 Taylor 2645 Butte T21N R6E sc sec. 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi. E of Lake Madrone; Yelow Pine Forest, granitic soils. 998 Comment
  UC725452  Damasonium californicum A. A. Heller 1940-5-13 15617 Butte field 3 mi. w. Chico Comment
  CHSC112439  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards west of a wet meadow, about 40 yards north of Forbestown Road, 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
  SEINET10935015  Danthonia californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4093 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-BC420354  Darmera peltata A. A. Heller 1916-4-13 12317 Butte Stilson canyon E of Chico Comment
  CHSC43777  Datura stramonium var. tatula Vernon Oswald 1986-11-2 2291 Butte Upper Bidwell Park, Chico, on the n edge of Chico Creek near the end of the paved portion of Upper Park Road. 91 Comment
  SEINET10840961  Daucus pusillus Mary Susan Taylor 1980-6-14 Taylor 2882 Butte On W side of Oroville-Quincy Hwy, ca. 1 mi (2 mi by car) N of Bidwell Bar Bridge over the S fork of Feather River, ca. 7 mi S of Lake Madrone. 457 Comment
  SEINET10873897  Daucus pusillus Lowell Ahart 1985-5-15 Ahart 4985 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  SEINET10899327  Delphinium Mary Susan Taylor 1981-4-8 Taylor 3508 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
  CHSC77993  Delphinium gracilentum Lowell Ahart 2000-5-10 8337 Butte On the south side of the old or west trail, Feather Falls Trail, about 1 mile north of the trailhead, about 2 miles (air) north of Feather Falls. 579 Comment
  CAS-BOT-BC8795  Delphinium gracilentum Lowell Ahart 1980-4-7 2070 Butte Along Swedes Flat Road, near Bangor 320 Comment
  UCD95659  Delphinium gracilentum A. A. Heller 1919-5-18 13176 Butte Mosquito creek between Appleton and Coutelence in the yellow pine belt in moist soil near the creek. Comment
  CAS-BOT-BC8571  Delphinium hansenii John Thomas Howell 1962-6-16 37627 Butte Concow School north of Yankee Hill 533 Comment
  POM99220  Delphinium hansenii subsp. hansenii C. C. Bruce 1897-06 1917 Butte [Unspecified] Comment
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  CAS-BOT-BC10302  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Along Bloomer Hill Road, about 0.75 mile west of the Oroville Quincy Highway, about 15 miles NE of Oroville 425 Comment
  CHSC81545  Delphinium nudicaule Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  UC426909  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville 1550 Comment
  CHSC53300  Delphinium variegatum J. R. Lee 1974-4-22 3 Butte Found 25 yds on the n side of the Skyway, 6 mi e of the Chico city limits. 152 Comment
  CHSC77438  Delphinium variegatum subsp. variegatum Tim Stofer 1997-4-13 12 Butte At the shooting range 100 yards from the head of the South Rim Trail off South Park Dr. in Upper Bidwell Park. 76 Comment
  CAS-BOT-BC82874  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte On Highway #24 near the junction of the Yankee Hill road. Comment
  CHSC77436  Dendromecon rigida Laura Bogni 1997-4-5 25 Butte West side of Coutelec Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 670 Comment
  UC855062  Dendromecon rigida A. A. Heller 1938-6-14 15150 Butte along the Feather River Hwy near Yankee Hill Road (about 20 mi from Oroville) Comment
  SEINET3927686  Deschampsia danthonioides B. Ertter, Jeff Strachan 1980-5-5 3255 Butte Peter Ahart Ranch ca 1.5 miles northeast of Honcut between Oroville and Marysville. North of house.; 0 30 Comment
  UCD62772  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Near Nelson. Comment
  CHSC39046  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte About 15 mi ne of Oroville, just off of Bloomer Hill Road about 0.5 mi w of the Oroville-Quincy Highway. Along a poor road, near a branch of Canyon Creek. 400 Comment
  CHSC19647  Dicentra eximia K. R. Stern 1966-3-25 Butte Chico. Comment
  CAS-BOT-BC402394  Dicentra formosa subsp. formosa Clarence R. Quick 1952-7-1 52 -114 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC19650  Dicentra formosa subsp. oregana K. R. Stern 1966-3-31 Butte From Montreal Botanical Gardens; Planted in Chico. Comment
  SEINET516313  Dicentra uniflora Vernon H. Oswald 1998-4-30 8984 Butte Humboldt Rd. between Lomo and Butte Meadows, near the 4533 ft. BM ca. 2 mi NE of Hwy 32. 1382 Comment
  CAS-BOT-BC500056  Dichelostemma capitatum Jim Riley 1923-4-2 s.n. Butte Richardson Springs/. Comment
  CAS-BOT-BC500057  Dichelostemma capitatum James L. Reveal 1988-6-3 7003 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge,. 518 Comment
  CHSC4224  Dichelostemma capitatum subsp. capitatum J. Senter 1967-3-10 26 Butte Abundant along Upper Bidwell Rd. from Horseshoe Lake east, Chico. 152 Comment
  UCD105288  Dichelostemma capitatum subsp. capitatum Robert E. Preston 2007-3-23 2418 Butte Ca. 3.7 mi NW of Oroville on NW side of PG and E substation. 45 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
  SD6364  Dichelostemma capitatum subsp. capitatum Daniel Cleveland Jul 1882 Butte No further location information given on label. Comment
  UC843594  Dichelostemma multiflorum Lewis S. Rose 1937-6-10 37353 Butte Hurleton 579 Comment
  CAS-BOT-BC501092  Dichelostemma multiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET12044750  Dichelostemma multiflorum L. S. Rose 1937-1 37353 Butte Hurleton 579 Comment
  CAS-BOT-BC209036  Digitaria sanguinalis Lowell Ahart 1986-11-7 5426 Butte North of the Oroville Grdiley Highway, about 3 miles east of Gridley 28 Comment
  SEINET13693686  Diplacus aurantiacus M. J. Williams, W. Roderick 1984-5-25 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CHSC116347  Diplacus aurantiacus J. R. Keck Jr. 1978-5-23 PDR 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  CAS-BOT-BC151925  Diplacus douglasii A. A. Heller 1938-3-13 15000 Butte Ten Mile House east of Chico 304 Comment
  CAS-BOT-BC150277  Diplacus grandiflorus Grace Kermode 1899-6-17 s.n. Butte Chico Comment
  CAS-BOT-BC150496  Diplacus grandiflorus John Thomas Howell; Gordon H. True 1967-7-12 43386 Butte North Fork Feather River near Cresta Powerhouse 426 Comment
  CAS-BOT-BC150497  Diplacus grandiflorus John Thomas Howell 1962-6-15 37444 Butte Magalia 731 Comment
  CAS-BOT-BC150501  Diplacus grandiflorus John Thomas Howell 1951-6-26 27509 Butte Feather River Canyon 198 Comment
  CAS-BOT-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC44761  Diplacus kelloggii R. Banchero 1980-5-12 150 Butte Along Hwy 70, 1.7 mi N of Jarbo Gap, 3.6 mi SW of the jct of Hwy 70 and the Feather River. 658 Comment
  CHSC62133  Diplacus kelloggii L. P. Janeway 1993-7-1 4418 Butte Plumas National Forest. North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the 'low water crossing' of French Creek. 624 Comment
  CHSC33343  Diplacus mephiticus R. Banchero; R. Schlising 1981-6-22 526 Butte 1.1 mi e of Camp 18, 0.2 mi e of jct of Golden Trout Crossing and County Line Rd. Ca. 5 mi ne of Feather Falls town. 1280 Comment
  CHSC29393  Diplacus torreyi R. A. Schlising; S. Azevedo 1980-6-13 3698 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Roads). 902 Comment
  CHSC93986  Diplacus torreyi R. D. Fischer 2004-6-20 767 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CAS-BOT-BC154173  Diplacus tricolor A. A. Heller; H. E. Brown 1902-5-15 5554 Butte Near Biggs Comment
  CHSC12183  Diplacus tricolor Lowell Ahart 1973-4-6 Butte Peter Ahart Ranch. 45 Comment
  CHSC97717  Dittrichia graveolens Lowell Ahart 2007-10-30 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. 34 Comment
  CHSC67288  Dodecatheon clevelandii subsp. patulum James D. Jokerst 1984-3-20 1952 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Comment
  CHSC31805  Dodecatheon hendersonii L. Ahart 1975-3-23 716 Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek on moist to dry soil, near large rocks. 45 Comment
  CHSC52118  Dodecatheon hendersonii Gary R. Koses 1979-4-3 15 Butte 5 mi s of intersection of hwy 70 and Cherokee rd. E side of Cherokee rd. Comment
  UC175531  Dodecatheon hendersonii A. A. Heller 1913-3-9 10686 Butte two mi n Oroville; n of Oroville Comment
  JEPS120766  Dopatrium junceum Lowell Ahart 2013-9-20 19058 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CDA6254  Dopatrium junceum L. L. Davis 1944-8-23 Butte Biggs Rice Field Station, Biggs. 0 Comment
  POM68177  Downingia bicornuta Edward Palmer 1892-6-7 2083 Butte Near Chico. Comment
  RSA21491  Downingia bicornuta C. B. Wolf 1937-5-14 8673 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  UC725639  Downingia cuspidata A. A. Heller 1942-4-26 16436 Butte s of Oregon City road (summit of Table Mountain, a short distance s of the place where the road emerges from the timbered part); Table Mountain Comment
  CHSC52393  Downingia ornatissima Harritta Gaussoin 1980-4-22 20 Butte Southwest jct of Broyles Rd and hwy 99N, ca 13 mi N of Chico on hwy 99. 60 Comment
  JEPS103261  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  UC765626  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  CHSC8625  Draba verna D. Patton 1968-3-5 72 Butte Collected ca. 1 1/2 mi e of Chico near edge of The Skyway. 91 Comment
  CAS-BOT-BC41346  Draba verna Lowell Ahart 1980-3-8 2032 Butte Honcut. Peter Ahart Ranch. 50 Comment
  JEPS117893  Draba verna var. verna L. P. Janeway 2008-3-18 9236 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road 126 Comment
  CHSC35901  Draperia systyla M. S. Taylor 1982-5-23 4512 Butte S side of Jwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  UC1382130  Draperia systyla L. Constance and David H. French 1968-5-2 3867 Butte Canyon of North Fork of Feather River 7.3 miles SW of Storrie Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  UC426910  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  UC600381  Drymocallis lactea H. F. Copeland 1932-8-19 Butte Jonesville Jonesville (at the Lily Pond) 1700 Comment
  CHSC28884  Dryopteris arguta M. S. Taylor 1980-2-17 2355 Butte On s side of lower Forbestown Rd, ca. 3 mi w of Forbestown. 609 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
  CAS-BOT-BC109477  Dudleya John Thomas Howell 1962-6-16 37597 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CAS-BOT-BC428074  Dudleya cymosa subsp. cymosa Herbert Copeland 1920-5-1 s.n. Butte Jonesville Comment
  CHSC110355  Dudleya cymosa subsp. cymosa L. P. Janeway 2013-5-1 11095 Butte Northern Sierra Nevada Foothills. Southwest-facing high cutbank into bedrock above Oroville-Quincy Hwy about 200 m north-northwest of the north end of the Bidwell Bar Bridge over Lake Oroville. 314 Comment
  CHSC38406  Dudleya cymosa subsp. cymosa Vernon Oswald 1983-4-25 394 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 359 Comment
  CHSC25520  Dysphania ambrosioides Hayes; Warner 1977-9-11 61 Butte Along dirt and gravel shoulder, Hwy 32, exactly 24.6 mi e of the Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  CHSC42107  Dysphania ambrosioides Lowell Ahart 1986-11-9 5460 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC42110  Dysphania ambrosioides Lowell Ahart 1986-11-7 5419 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC48291  Dysphania ambrosioides Vernon Oswald 1983-7-25 913 Butte River Road at the washout w of Chico. Comment
  CHSC94591  Dysphania ambrosioides Lowell Ahart 2006-9-11 13281 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC116589  Dysphania botrys L. P. Janeway 2015-7-20 11802 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC25424  Dysphania botrys M. P. Hayes; Warner 1977-9-11 58 Butte Along roadside, dirt and gravel shoulder 2 m south of Hwy 32, exactly 24.6 mi east of the Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  CHSC42731  Dysphania botrys Lowell Ahart 1987-5-27 5712 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
  SEINET3928576  Echinochloa colona Lowell Ahart 1984-9-17 4791 Butte Peter Ahart Ranch, about 2.3 mi N and 0.3 mi. E of Honcut, about 12 mi S of Oroville; Valley Grassland.; 0 50 Comment
  CHSC94762  Echinochloa crus-galli Lowell Ahart 2006-9-11 13304 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS114996  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  SBBG116106  Echinochloa crus-galli B. Crampton 1963-9-9 6887 Butte ca. 5 mi NW of Biggs, Biggs Rice Experiment Stn Comment
  SEINET10831129  Echinochloa crus-galli Lowell Ahart 1977-8-14 Ahart 1554 Butte On damp soil in a small slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  SEINET10934804  Echinochloa crus-galli Mary Susan Taylor 1975-10-3 Taylor 931 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  RSA733900  Echinochloa oryzicola Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 854 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  CDA2001  Echinochloa oryzoides E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 853 Butte Biggs UC Field Station: north of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 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
  CHSC10707  Echinodorus berteroi Lowell Ahart 1972-6-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10474219  Eclipta alba Mary Susan Taylor 1980-9-26 Taylor 3341 Butte In Lindo Channel, jct of Mangrove and Cohasset Rds, Chico. 46 Comment
  CHSC115324  Elatine Lowell Ahart 2015-4-24 20065 Butte Bottom of a large duck field, 50 yards north of Parking Lot 2, about 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. 19 Comment
  CHSC115338  Elatine Lowell Ahart 2015-4-24 20066 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC78979  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station; field on south side of Hwy 162 between the railroad and Riceton Rd. 30 Comment
  JEPS122284  Elatine californica Lowell Ahart 2014-4-9 19349 Butte 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. Comment
  CHSC84023  Elatine rubella Lowell Ahart 2003-6-19 10292 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  SEINET10447968  Elatine rubella Lowell Ahart 1984-5-8 Ahart 4598 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC78919  Eleocharis acicularis Lowell 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 of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  CAS-BOT-BC113414  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots, Biggs Rice Experiment Station Comment
  CAS-BOT-BC113458  Eleocharis bella A. A. Heller 1963-7-16 63 52 b Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  SEINET7585843 Image available Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CDA14063  Eleocharis bolanderi G. F. Hrusa, T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CAS-BOT-BC113373  Eleocharis engelmannii Lowell Ahart 1974-11-9 s.n. Butte In rice field, Peter Ahart ranch, Honcut 45 Comment
  CHSC68435  Eleocharis macrostachya L. P. Janeway 1987-5-7 2017 Butte Bottom of Dead Horse Slough draining the California Park lake, just west of California Road and about 300 ft north of Hwy 32. 74 Comment
  JEPS98593  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8389 Butte 12 air miles SE of Oroville (E side of North Honcut Creek, Peter Ahart Ranch, 1 mi N and 2 3/4 mi E of Honcut) 39 Comment
  SEINET11750485  Eleocharis pachycarpa Unknown 1985-1 5161 Butte Peter Ahart Ranch, ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville,W side of North Honcut Creek 46 Comment
  CHSC44930  Eleocharis parishii Lowell Ahart 1988-7-24 6125 Butte Along the bottom of a road gutter, about 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  JEPS115999  Eleocharis parishii Lowell Ahart 2009-6-19 15923 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  UC143762  Eleocharis parishii Copeland 1903-5-30 3280 Butte Chico Comment
  CDA38987  Eleocharis quinqueflora L. Ahart 2000-5-28 8408 Butte On the north margin of a large wash, 200 yards east of the road crossing, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC111960  Eleocharis radicans Lowell Ahart 2012-6-5 18163 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain , about 6 miles (air) north of Oroville. 273 Comment
  CDA38981  Eleocharis radicans L. Ahart 2000-8-3 8677 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  JEPS122217  Elodea canadensis Lowell Ahart 2014-4-16 19371 Butte On the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC84055  Elymus caput-medusae Lowell Ahart 2003-5-15 10177 Butte Pasture fields, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  CHSC29821  Elymus elymoides subsp. brevifolius M. S. Taylor; J. D. Jokerst 1979-7-21 2158 Butte Humboldt Peak at Humboldt Summit. 2154 Comment
  UC1133005  Elymus elymoides subsp. elymoides A. E. Wieslander 1933-6-23 323 Butte Bottle Creek Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC28563  Elymus glaucus M. S. Taylor 1978-7-21 1794 Butte Lake Madrone, at its jct with Oroville-Quincy Hwy, ca. 10 mi ne of Oroville. 609 Comment
  CHSC44454  Elymus glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC203420  Elymus glaucus subsp. glaucus Lowell Ahart 1987-7-8 5808 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  JEPS116072  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15794 Butte On dry soil, on the east side of Big Chico Creek, about 30 yards south of the gate, on both sides of north side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  SEINET10661843  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 Ahart 10959 Butte T17N, R4E, northeast 1/4 Section 11. On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CHSC49541  Elymus glaucus subsp. jepsonii Vernon Oswald 1985-6-3 1801 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn. Lookout. 1066 Comment
  UCD62442  Elymus multisetus John Thomas Howell 1962-6-15 37528 Butte Magalia. 731 Comment
  CHSC76156  Elymus stebbinsii G. F. Hrusa; T. D. Wilfred 1997-6-27 13908 Butte Sierra Nevada. Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. 1400 Comment
  CHSC68915  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1997-7-11 7744 Butte Road cut, on the north side of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS110200  Elymus trachycaulus subsp. subsecundus Lowell Ahart 2006-7-16 12999 Butte On the northwest edge of Willow Creek, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1515 Comment
  CAS-BOT-BC227813  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico Comment
  SEINET12192833  Epilobium adenocaulon M. S. Taylor 1975-1 954 Butte ca 1 mi S of Paradise, E side of Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy 610 Comment
  SEINET10453001  Epilobium brachycarpum Lowell Ahart 1985-10-12 Ahart 5201 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC111152  Epilobium campestre Lowell Ahart 2012-6-4 18153 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC873163  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durhan and Nelson; Butte Creek 53 Comment
  UC600549  Epilobium ciliatum subsp. ciliatum H. F. Copeland 1932-8-17 Butte swamp by Butte Creek; Jonesville 1500 Comment
  OBI5728  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1935-7-28 s.n. Butte Jonesville 1500 Comment
  CDA42891  Epilobium cleistogamum L. Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 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
  CHSC28804  Epilobium densiflorum J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 406 Butte In bottom of vernal pools. Top of Table Mt, 300 m NW. of the intersection of Cherokee Rd and east edge of section. Comment
  CHSC46146  Epilobium densiflorum Lowell Ahart 1977-9-20 1577 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS119880  Epilobium foliosum Lowell Ahart 2012-6-2 18141 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC70341  Epilobium minutum R. A. Schlising 1980-6-10 3676 Butte Along Humboldt Road, 1.9 mi NE of junction with Hwy 32 at Lomo; Carpenter Ridge. 1356 Comment
  HSC38023  Epilobium minutum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2486 Butte Just E of Magalia Comment
  CHSC44137  Epilobium obcordatum V. Oswald; L. Ahart 1988-7-29 3635 Butte Ca. 5 (air) mi se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  UC478494  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte The Summit Jonesville 2000 Comment
  CHSC36555  Epilobium pygmaeum L. Ahart 1982-7-10 3669 Butte Ca. 1/4 mi se of Headquarters, Graylodge Wildlife Refuge, ca. 12 mi w of Gridley. In a duck pond. 35 Comment
  SEINET3070848 Image available Equisetum fontinale E. B. Copeland 1930-6-24 403 Butte Jonesville 1300 Comment
  SD10030  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 Butte Jonesville Comment
  CAS-BOT-BC57258  Equisetum laevigatum John Thomas Howell 1975-6-15 51072 Butte Butte Creek near Chico 60 Comment
  CAS-BOT-BC204452  Eragrostis cilianensis Lowell Ahart 1981-9-5 3063 Butte Honcut 35 Comment
  JEPS95928  Eragrostis cilianensis Lowell Ahart 1999-8-22 8187 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
  CHSC83072  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS95812  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 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
  RSA724875  Eragrostis pectinacea L. Ahart 2006-9-11 13338 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CHSC30530  Eragrostis pectinacea var. pectinacea M. Merryman; R. Banchero 1979-9-23 48 Butte SW of Chico, just e of Ord Ferry and Sacramento River. Riverbank. 30 Comment
  CHSC41971  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-7 5428 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  SEINET10507726  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 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
  JEPS115368  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
  CHSC35049  Eremogone cliftonii R. Schlising; R. Banchero 1981-6-29 4125 Butte NE part of county, 0.8 mi SW of Ramsey Bar on Little Kimshew Creek. Roadside. 1463 Comment
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Jul 8 2014
  CHSC35050  Eremogone cliftonii R. A. Schlising; R. Banchero 1981-6-29 4124 Butte NE part of county, 0.5 mi SW of Ramsey Bar on Little Kimshew Creek. 1417 Comment
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Jul 8 2014
  CHSC42695  Eremogone congesta var. congesta Vernon Oswald; Lowell Ahart 1987-7-1 3054 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek. 1828 Comment
  CHSC117805  Ericameria arborescens L. P. Janeway 2016-9-15 12173 Butte Northern High Sierra Nevada. Plumas National Forest; about 30 m northeast of Old Forbestown Road, 0.6 kim north of Forbestown Road. 860 Comment
  CAS-BOT-BC291276  Ericameria bloomeri H. F. Copeland 1928-8-29 383 Butte Near Jonesville. Summit of Humboldt Road 2133 Comment
  CAS-BOT-BC291277  Ericameria bloomeri A. A. Heller 1928-7-25 14704 Butte Butte Creek House Comment
  CHSC48144  Erigeron annuus Vernon Oswald 1987-5-26 2928 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  RSA774145  Erigeron lassenianus L. Ahart 2010-9-21 17227 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CAS-BOT-BC295468  Erigeron lassenianus var. lassenianus V. Oswald; L. Ahart 1988-7-26 3617 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 1996 Comment
  CAS-BOT-BC295774  Erigeron petrophilus var. sierrensis John Thomas Howell 1959-9-26 s.n. Butte At Pulga Bridge, Feather River Canyon 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
  CHSC27256  Eriobotrya japonica P. Moyer 1971-2-1 79 Butte CSUC Campus. S bank Chico Ck., at base of sycamore tree, w of L.S.-Ed. Psych. Bridge. 60 Comment
  CHSC99637  Eriodictyon californicum H. Koeth; K. Schierenbeck 2007-2-13 Butte Crown Point Rd., Forest Ranch. UTM 10 611669E 4411016N. 586 Comment
  UC1594552  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte About 2 air mi north of Oroville (on north side of dirt road on north side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC116207  Eriodictyon lobbii Lowell Ahart 2015-7-4 20267 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 300 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1252 Comment
  RSA722693  Eriogonum luteolum R. R. Halse 2006-8-2 6983 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC912846  Eriogonum luteolum var. luteolum A. A. Heller 1916-9-5 12646 Butte hills 8 mi n Oroville Comment
  UCR111229  Eriogonum luteolum var. luteolum H. Dearing, M. Dearing 1938-6-21 2044 Butte 15 mi north of Chico on lava ridge 268 Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  CHSC113842  Eriogonum nudum var. oblongifolium Lowell Ahart 2014-8-24 19727 A Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CAS-BOT-BC269851  Eriogonum nudum var. pubiflorum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC38610  Eriogonum nudum var. pubiflorum Vernon Oswald 1982-11-6 8 Butte Bidwell Park, Chico. Beside Yahi Trail ca. 800 ft e of Salmon Hole. 158 Comment
  CHSC39137  Eriogonum nudum var. pubiflorum R. A. Schlising 1982-8-31 4383 Butte N part of county, S of Butte Meadows along Humboldt Road; at immediate roadside. 1402 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
  LA206890  Eriogonum nudum var. pubiflorum E. B. Copeland; 1930-7-16 sn Butte Jonesville 1500.0 Comment
  CHSC112071  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; 'Magalia Serpentine' (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  RSA0089890  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2011-8-1 21133 Butte Pulga Bridge, Feather River canyon, Pulga Road about 200 yards E of the intersection, Highway 70. 457 Comment
  RSA88593  Eriogonum umbellatum var. ahartii J. T. Howell 1951-8-19 28160 Butte 2 miles west of Pulga 366 Comment
  CHSC30844  Eriogonum ursinum var. ursinum M. S. Taylor; R. Schlising 1980-7-6 3075 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  CHSC44046  Eriogonum ursinum var. ursinum L. P. Janeway 1987-6-13 2197 Butte Along Ponderosa Way (Rim Rd) 3.8 NE of Jarbo Gap. East-facing roadcut. 883 Comment
  CAS-BOT-BC262344  Eriogonum vimineum Lowell Ahart 1983-7-24 4205 Butte At the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  SEINET11924838  Eriogonum wrightii var. trachygonum Unknown 1974-1 635 Butte along North Honcut Creek,Peter Ahart Ranch,ca 1 1/4 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville 46 Comment
  CAS-BOT-BC301307  Eriophyllum lanatum var. croceum C. R. Quick 1941-6-7 41 -36 Butte Big Bar Mt. Comment
  UC171383  Eriophyllum lanatum var. grandiflorum A. A. Heller 1912-5-23 10748 Butte n Oroville; Table Mountain Olive Ranch Comment
  UC725409  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  UC896354  Eriophyllum lanatum var. grandiflorum A. A. Heller 1915-5-28 11909 Butte near Cohasset; Sierra foothills Comment
  SEINET5320907  Erodium botrys Unknown 2002-3-27 6154 Butte Chico; At the junction of State Highway 99 and Hamilton Nord Cana Highway, about 8 miles northwest of Chico 40 Comment
  CHSC31154  Erodium brachycarpum M. S. Taylor 1980-3-1 2331 Butte West end of Dump, on n side of Neal Rd, ca. 1 mi e of Hwy 99, ca. 7 mi s of Chico. 76 Comment
  HSC8490  Erodium cicutarium William J. Ferlatte 1963-5-11 41 Butte Chico State College campus Comment
  POM88768  Erodium cicutarium C. C. Bruce 1898-05 2385 Butte [No location information on label.] Comment
  CAS-BOT-BC40747  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte Near Cohasset. Comment
  CHSC115453  Erysimum capitatum M. Sutton; K. Schierenbeck 2013-5-5 49 Butte Deer Creek. 657 Comment
  CHSC10770  Erysimum capitatum var. capitatum Lowell Ahart 1970-5-19 Butte Along Deadwood Road, off Highway 70. 914 Comment
  CHSC44827  Erythranthe bicolor R. Banchero 1980-4-26 132 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  CAS-BOT-BC151492  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, Ca 2.5 mi e of the jct of Zink Rd and Bald Rock Rd. 975 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC24153  Erythranthe glaucescens B. Bunge 1976-4-20 16 Butte Ca. 100 yd s of Skyway, ca 5 mi ese of Chico. 213 Comment
  CHSC51924  Erythranthe glaucescens S. B. Collom 1988-4-25 11 Butte Chico: 100 yds E from 5th Ave bridge in Lindo Channel, on N side. Comment
  CHSC77495  Erythranthe glaucescens Anna Pinsky 1997-4-24 13 Butte Chico, Upper Bidwell Park, Salmon Hole, above Chico Creek, on rock outcrop. 30 Comment
  CHSC78169  Erythranthe glaucescens Lowell Ahart 2000-5-31 8428 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 Comment
  CAS-BOT-BC153858  Erythranthe glaucescens A. A. Heller 1938-5-4 15060 Butte Near the covered bridge over Butte Creek east of Chico Comment
  CHSC84713  Erythranthe inconspicua L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7848 Butte Northern High Sierra Nevada. Along southeast edge of North Fork Feather River arm of Lake Oroville, between mouth of Berry Creek and mouth of French Creek. 280 Comment
  CHSC42716  Erythranthe microphylla Lowell Ahart 1987-6-9 5735 Butte On a sand bar 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
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Jun 25 2013
  CHSC44781  Erythranthe nasuta R. Banchero 1980-3-21 74 Butte Along Hwy 32, 4.2 mi N of Humbolt Rd, Ca 0.5 mi N of Ten Mile House. 487 Comment
  CHSC42865  Erythranthe pulsiferae Lowell Ahart 1987-5-12 5654 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falles. 1280 Comment
  SEINET10938446  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3515 Butte T23N R4E se sec 36, Pulga SW quad. Serpentine embankment, s side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek canyon, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 2l air mi n of Oroville. 3300 ft. 1006 Comment
  CHSC32644  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-2 3474 A Butte W side of Coutelenc Rd, n side of spur rd just n of RR overpass and the Skyway, ca. 1/4 mi n of Magalia. 701 Comment
  CHSC39632  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte 3/8 mile south-west of Forbestown Res., about 4 miles north-east of Forbestown. On the east side of Woodleaf Creek. 450 Comment
  CAS-BOT-BC504539  Erythronium multiscapideum M. S. Taylor 1981-3-18 3422 Butte Around and w of bridge crossing West Branch of Feather River on Ponderosa Way (Jordan Hill Rd), both banks 579 Comment
  CAS-BOT-BC502810  Erythronium purpurascens M. S. Taylor 1981-4-28 3561 Butte Road embankment, S side of 23N28.2 (road to Big Bar Mt), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, 4 air mi E of Pulge on Hwy 70 1280 Comment
  CAS-BOT-BC402649  Eschscholzia caespitosa Lowell Ahart 1988-3-27 5938 Butte West of the deep road cut, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 1/4 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap 335 Comment
  CAS-BOT-BC402968  Eschscholzia californica A. A. Heller 1914-4-3 s.n. Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC402974  Eschscholzia californica Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  POM125702  Eschscholzia californica var. peninsularis C. C. Bruce 1897-04 2020 Butte Foot hills, near Iron Canyon Comment
  CAS-BOT-BC419498  Eschscholzia lobbii H. E. Brown 1897-4-15 149 Butte Near Clear Creek 53 Comment
  UC600728  Eucephalus breweri H. F. Copeland 1932-7-24 Butte sw Butte Creek Meadows; Jonesville Comment
  CHSC54301  Euphorbia crenulata Vernon H. Oswald; Lowell Ahart 1991-6-5 4653 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. On roadside banks. 822 Comment
  CHSC48379  Euphorbia lathyris Vernon Oswald 1987-4-22 2341 Butte Along Durham Mutual Ditch e of Butte Creek and ne of Hwy 99, ca 1600 ft s of the diversion dam on Butte Creek. 68 Comment
  RSA724815  Euthamia occidentalis L. Ahart 2006-9-11 13275 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CHSC45377  Fallopia convolvulus Vernon Oswald 1987-8-9 3194 Butte Hwy 32, ca. 0.2 mi s of Lomo. 1170 Comment
  JEPS110142  Festuca Lowell Ahart 2006-5-19 12635 A 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 405 Comment
  JEPS122270  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  CHSC42919  Festuca occidentalis Lowell Ahart 1987-7-8 5801 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  JEPS113257  Festuca occidentalis Lowell Ahart 2007-5-29 13942 Butte On the south side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oro 844 Comment
  SEINET10662360  Festuca subuliflora Lowell Ahart 2007-5-22 Ahart 13915 Butte T21N, R6E, Section 28. About 1/8 miles south of Bald Rock Dome, around a small stream along the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  SEINET10474659  Filago californica Mary Susan Taylor 1980-5-31 Taylor 2767 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC27221  Forsythia suspensa var. fortunei P. Moyer; R. Pessner 1972-3-11 115 Butte Footpath 100 ft. from L.S., s bank Chico Creek. CSUC Campus. 60 Comment
  RSA325094  Fragaria vesca subsp. californica M. S. Taylor 1981-4-28 3571 Butte Along Four Trees Road, 0.5 to 1mile E of Hwy 70. 2-3 mile NE of Pulga. 671 Comment
  SEINET7417508 Image available Frangula purshiana A. A. Heller 1919-1 13157 Butte Feather River near Stirling [City] 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
  CHSC27178  Fraxinus dipetala M. MacArthur 1968-6-19 233 Butte Along NW edge of Big Chico Creek near Dining Hall bridge, Chico State College. 60 Comment
  SEINET13943082 Image available Fraxinus dipetala Unknown 11405 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  CHSC118038  Fremontodendron decumbens Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 236 Butte Durham Native Plant trail near elementary school. 55 Comment
  CHSC28967  Fritillaria affinis J. D. Jokerst 1980-2-24 450 Butte E branch of Mud Cr ca 0.5 mi E of Richardsons Springs. 243 Comment
  JEPS119568  Fritillaria affinis Lowell Ahart 2012-2-22 17747 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC130312  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte Old Utah Mine, near Magalia Comment
  SEINET8478820  Fritillaria eastwoodiae M. J. Williams 1967-4-15 s.n. Butte Near Magalia. 610 Comment
  CAS-BOT-BC130424  Fritillaria pluriflora A. A. Heller 1916-3-5 12278 Butte Along the highway 10 miles north of Chico Comment
  SEINET8501273 Image available Fritillaria pluriflora H. E. Brown 1897-1 141 Butte Near Clear Creek Comment
  CAS-BOT-BC508149  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  POM219311  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte Jonesville. Gulch draining into Colby Canyon. 1524 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
  UC1586556  Galium divaricatum Lowell Ahart 1991-5-12 6652 Butte about 1 1/4 mi n and 2 1/2 mi e Honcut (about 12 mi se of Oroville, banks of a small wash); Peter Ahart Ranch 48 Comment
  POM174355  Galium grayanum var. grayanum H. F. Copeland 1928-8-29 1015 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC29770  Galium parisiense M. S. Taylor; L. Ahart, R. S. Schlising 1980-5-31 2750 Butte E side of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. 609 Comment
  POM319644  Galium parisiense Patricia Wilder 1971-6-23 5177 -a Butte Magalia. N of Paradise. Coutelenc Road just N of the jct with Skyway Road along railroad track. Sierra Nevada Mtn range. W branch of the Feather River. 732 Comment
  SEINET10500736  Galium porrigens var. tenue Mary Susan Taylor 1980-3-1 Taylor 2349 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
  CHSC61010  Galium spurium var. echinospermum Lowell Ahart 1993-6-20 6988 A Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  JEPS98713  Galium tricornutum Lowell Ahart 2000-5-13 8353 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, W side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville airport) 42 Comment
  CHSC28430  Galium triflorum M. S. Taylor 1979-10-5 2337 Butte On SE side of Paradise Lake, ca. 1/2 mi N of Coutolenc Rd., ca. 5 mi N of Magalia. 731 Comment
  CAS-BOT-BC169935  Garrya fremontii Wm. S. Levis 1931-7-3 s.n. Butte Middle Feather River 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
  SEINET5765228  Garrya fremontii J. T. Howell 1975-6-15 51082 Butte 2 miles from paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC282601  Gastridium phleoides Lowell Ahart 1988-8-24 6128 Butte At the intersection of Black Bart Road and Forbestown Road about 1 mile west of Robinson Mill Road 731 Comment
  CHSC44924  Gastridium phleoides Lowell Ahart 1988-7-24 6128 Butte On the bottom of a ditch, at the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  POM183996  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 s.n. Butte Jonesville, about the Lily Pond 1700 Comment
  CHSC37445  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-7-11 3884 Butte E side of county ne of Berry Creek and Brush Creek at south end of Walker Plains. 1536 Comment
  CHSC31051  Gayophytum humile M. S. Taylor 1978-7-19 1778 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CAS-BOT-BC208055  Genista monspessulana John Thomas Howell 1962-6-16 37574 Butte Magalia 731 Comment
  CHSC90079  Genista monspessulana Ross Rowland 2001-4-25 53 Butte On east side of Longview Road about 20 yards north of Skyway in Paradise. 616540mE/4400340mN/zone 10N. 463 Comment
  RSA638255  Genista monspessulana Michael A. Vincent, Ethan H. Freid, Karl Vincent 1998-4-6 8109 Butte Table Mountain; along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  SEINET12332631  Gentiana newberryi P. Broyles, Schlising, R. A.; Janeway, L. P.; Castro, B. 1987-1 1076 Butte Ca 17km NE of Inskip. T26N, R4E, SE1/4 section 36 499 Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC101259  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC98944  Geranium molle Lowell Ahart 2008-5-8 14720 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  SEINET10495128  Geranium molle Lowell Ahart 1983-4-10 Ahart 3926 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC110104  Geranium purpureum L. P. Janeway 2012-5-29 10827 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  JEPS120522  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. Comment
  CAS-BOT-BC459402  Geum macrophyllum Lowell Ahart 1980-6-20 2416 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  CHSC39273  Gilia capitata subsp. mediomontana Lowell Ahart 1983-6-26 4164 Butte Found along the sides of Bean Creek Road, about 1/2 mile south of Little Bald Rock. 1000 Comment
  CHSC41372  Gilia capitata subsp. mediomontana R. A. Schlising; R. Banchero 1980-6-12 3693 Butte 0.25 mi S of Tehama County line on Highway 32 near Lomo. 1121 Comment
  CHSC1257  Gilia tricolor J. Gulick 1929-3-17 Butte Oroville. 53 Comment
  CAS-BOT-BC266482  Githopsis diffusa Clare B. Hardham 4-17-?8 21552 Butte Humbug Road N of Paradise Comment
  CHSC103966  Githopsis pulchella subsp. campestris Lowell Ahart 2010-5-7 16616 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC30823  Githopsis specularioides M. S. Taylor; J. D. Jokerst 1980-4-18 2526 Butte On dry open bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  JEPS108821  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
  UC1609064  Githopsis specularioides Lowell Ahart 1993-6-20 6997 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC282821  Glyceria X occidentalis L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi. east of Palermo-Honcut Road ca. 5.1 mi. south of Palermo 38 Comment
  CHSC113963  Glyceria borealis Lowell Ahart 2014-7-7 19585 Butte Pond in the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CAS-BOT-BC302468  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  CAS-BOT-BC302474  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CHSC75960  Gnaphalium palustre Lowell Ahart; Vernon H. Oswald 1999-8-13 8166 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC202668  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  RSA688937  Gnaphalium palustre L. Ahart 1986-11-9 5450 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  UC129187  Goodyera oblongifolia Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET6167160  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  CHSC112891  Gratiola ebracteata Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CAS-BOT-BC302079  Grindelia Grace Kermode 1899-6-3 s.n. Butte Big Chico Creek Comment
  UC175440  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte n Oroville (Table Mountain Olive Ranch); Table Mountain Olive Ranch Comment
  CHSC97029  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-19 9061 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  RSA272553  Grindelia nana Porter P. Lowry II 1977-7-5 810 Butte 0.25 mile S of Grand View Cafe on State Hwy 70. Comment
  CDA3433  Gypsophila elegans L. Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  RSA81717  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles S of Cherokee on road to Oroville. Comment
  SEINET10487247  Hedysarum boreale Mary Susan Taylor 1981-5-22 Taylor 3799 Butte Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, about 5 air mi E of Magalia. 1006 Comment
  CHSC25264  Helenium puberulum M. S. Taylor 1977-6-26 1384 Butte Creek on s side of Ponderosa Way, ca. 2 mi e of Cohasset. 609 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
  CHSC35085  Heliotropium europaeum R. A. Schlising 1981-10-1 4213 Butte N margin of county, several mi E of Sacramento River, along Cana/Pine Creek Road. 57 Comment
  SEINET10935958  Heliotropium europaeum Lowell Ahart 1985-6-9 Ahart 5042 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  CHSC65192  Helminthotheca echioides Lowell Ahart 1995-7-2 7590 Butte Along the edge of the dirt road, near the water trough for horses, south-west of the parking area to unload horses, on the west side of Oroville Quincy Highway, Loafer Creek State Park, about 6 miles east of Oroville. 335 Comment
  JEPS108568  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top 1317 Comment
  UC1609075  Hemizonella minima Lowell Ahart 1993-6-26 7021 Butte about 1 mi w Lost Creek Reservoir (e side of dirt road); Mooreville Ridge 1188 Comment
  CHSC25344  Hemizonia congesta subsp. luzulifolia M. Hayes 1977-7-3 23 Butte Along Pentz Rd. 2.0 km east of Highway 99. 80 Comment
  CHSC50797  Hemizonia congesta subsp. luzulifolia Vernon Oswald; Mary Bailey 1990-8-2 4426 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CHSC41381  Heracleum lanatum Lowell Ahart 1986-7-2 5342 Butte Along a small stream, south of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CHSC46921  Hesperevax acaulis var. acaulis Lowell Ahart 1974-4-24 440 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC44632  Hesperevax acaulis var. ambusticola Vernon Oswald 1986-5-6 1998 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CHSC44469  Hesperevax caulescens Lowell Ahart 1988-4-29 5964 Butte Near the ditch which was part of the Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC75250  Hesperevax caulescens Jennifer Slater 1997-4-27 35 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 60 Comment
  CHSC37407  Hesperocnide tenella R. A. Schlising 1982-2-21 4224 Butte S of Paradise, near Elliot Spring House. 213 Comment
  SD40685  Hesperocyparis macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Butte Sierra Nevada Foothills, at Magalia 700 Comment
  CDA13914  Hesperolinon micranthum G. F. Hrusa, T. D. Wilfred 1997-7-3 13980 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC112465  Hesperolinon micranthum Lowell Ahart 2013-5-27 18713 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  CHSC78154  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  JEPS120480  Hesperolinon micranthum B. Castro, L. P. Janeway 2004-6-13 1468 Butte Northern High Sierra Nevada. Along Old Forebestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. Comment
  UCD60530  Heteranthera rotundifolia Collector Unknown 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi. W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CAS-BOT-BC143631  Heteromeles arbutifolia Sally Bianco 1995-11-3 1050 Butte 0.25km N of Concow School on S end of Concow Rd. 549 Comment
  CAS-BOT-BC143632  Heteromeles arbutifolia Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC42051  Heteromeles arbutifolia Lowell Ahart 1986-10-16 5401 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  JEPS108135  Heterotheca grandiflora Lowell Ahart 2005-11-20 12491 Butte W side of the Poe Power house, E of the North Fork of the Feather River 275 Comment
  UC725600  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mi above Pentz (on the Paradise grade) Comment
  CAS-BOT-BC311008  Heterotheca oregona Lowell Ahart 1987-9-24 5903 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCR88744  Heterotheca oregona J. T. Howell 1959-9-20 34620 Butte eastern outskirts of Oroville on level of Feather River 61 Comment
  CHSC34709  Heterotheca oregona var. compacta M. S. Taylor 1980-9-26 3340 Butte In Lindo Channel, jct of Mangrove and Cohasset, in Chico. 45 Comment
  POM92886  Heuchera micrantha C. C. Bruce 1897-05 2041 Butte Butte Creek. Comment
  SEINET10479987  Hibiscus syriacus Mary Susan Taylor 1975-6-30 Taylor 824 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC69039  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CAS-BOT-BC319753  Hieracium argutum Lowell Ahart 1983-7-24 4210 Butte Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC51353  Hieracium scouleri var. scouleri Vernon Oswald 1990-7-10 4358 Butte Feather Falls Trail between California Nutmeg Spring and Fall River, ca. 4 mi north of the town of Feather Falls. 603 Comment
  NY11964  Hoita hallii H. M. Hall 1914-7-31 9825 Butte Humboldt Road; Sierra Nevada Mountains 1066.8 Comment
  CDA42902  Holcus lanatus L. Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 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
  CAS-BOT-BC320294  Holocarpha virgata Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile east of Oregon City 400 Comment
  CAS-BOT-BC150113  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  CHSC31535  Holozonia filipes L. Ahart 1974-7-9 549 Butte Along banks of North Honcut Creek on moist soil. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC4302  Hordeum murinum subsp. glaucum V. Hagaman 1966-4-25 Butte Field on Chico State College Campus. 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
  UC203611  Horkelia fusca subsp. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  CAS-BOT-BC143980  Horkelia fusca var. tenella H. F. Copeland 1920-8-2 205 Butte Jonesville Meadow 1219 Comment
  CHSC36519  Horkelia tridentata L. Ahart 1982-5-8 3413 Butte On slope above the road, ca. 1/2 mi sw of the Forbestown Reservoir, ca. 4.5 mi ne of Forbestown. 800 Comment
  CHSC116223  Horkelia tridentata var. tridentata Lowell Ahart 2015-6-16 20239 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 Comment
  HSC73113  Hosackia stipularis var. stipularis M. S. Taylor 1981-5-7 3647 Butte S side of Field Ridge Rd. (20N24), 4.7 mi. S of its jct. with Lumpkin Rd., 2 air mi. SE of Feather Falls. 1037 Comment
  CDA38353  Hydrocotyle umbellata L. Ahart 2000-9-2 8680 Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  POM196017  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville. 1550 Comment
  CHSC95107  Hypericum concinnum L. P. Janeway 2006-7-9 8805 Butte High Cascade Ranges. Doe Mille Ridge; along Doe Mill Road 3.1 km north-northeast of Schott Road. 860 Comment
  CDA36535  Hypericum concinnum Bellue & Berry 1938-6-9 Butte 10 miles west of Thermalitos on main highway. 0 Comment
  SD7538  Hypericum concinnum Mrs. R. M. Austin 1883-1 Butte Comment
  JEPS110536  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 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
  CHSC102378  Hypericum perforatum Lowell Ahart 2009-5-30 15783 Butte Northeast of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC31638  Hypericum perforatum Lowell Ahart 1977-6-3 1406 Butte Peter Ahart Ranch, Honcut. Along the banks of North Honcut Creek. 50 Comment
  CHSC30304  Hypochaeris glabra M. S. Taylor 1980-5-27 2682 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  UCD118208  Ipomopsis aggregata E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  RSA136349  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20689 Butte Just south of Paradise on road to Oroville 549 Comment
  RSA565165  Iris hartwegii R. J. Shaw 1993-5-23 5092 Butte ca. 15 miles east of Chico at junction of Highway 32 and Sugar Pine Place 1000 Comment
  SEINET10469746  Iris hartwegii Mary Susan Taylor 1979-5-4 Taylor 1982 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC52481  Iris macrosiphon Stacy Scott 1981-4-14 Butte 1.2 km E of hwy323 and Santos Wayjct on Santos Way, ca 11.2 km NNE of Chico. Comment
  CHSC90017  Iris macrosiphon Peggy Fain 1991-4-6 11 Butte N. side Richardson Springs Road ca. 4 km. from intersection with Cohasset Highway. 152 Comment
  UC398879  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte above Jonesville 1750 Comment
  JEPS104157  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  CAS-BOT-BC61878  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte near North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC60644  Isoetes orcuttii Vernon H. Oswald 1993-4-12 5260 Butte North Table Mtn. Near the SW edge of Flag Canyon. 365 Comment
  CHSC113273  Isolepis setacea Lowell Ahart 2014-5-13 19467 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  CHSC99760  Isolepis setacea Lowell Ahart 2008-7-23 15149 Butte On the north edge of the South Fork of the Feather River, about 10 yards east of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS98516  Isolepis setacea Lowell Ahart 2000-7-11 8564 Butte on the N side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 5 miles (air) NE of Feather Falls. 1219 Comment
  CAS-BOT-BC112644  Isolepis setacea Lowell Ahart 1989-5-28 6285 Butte South of Oregon Gulch road, ca. 1/2 mi N of the Cemetery, ca. 1 1/4 mi W of Rocky Point 335 Comment
  CDA32296  Juncus acuminatus G. F. Hrusa, T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  JEPS113835  Juncus acuminatus Lowell Ahart 2007-8-19 14488 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CDA39167  Juncus articulatus G. D. Barbe, T. C. Fuller 1982-6-14 3677 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  CHSC116318  Juncus articulatus subsp. articulatus Lowell Ahart 2015-11-18 20666 Butte Marsh like area, on the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC45240  Juncus balticus S. C. Morey 1983-7-28 629 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC96946  Juncus balticus subsp. ater Lowell Ahart 2007-7-8 14266 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  JEPS114976  Juncus balticus subsp. ater Lowell Ahart 2008-6-13 14815 Butte East of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  UCD141317  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 976 Comment
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. Comment
  CDA37167  Juncus bufonius CDFA Staff 2010-6-7 s.n. Butte Palermo Road and Highway 70. 0 Comment
  CHSC113246  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 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
  JEPS114389  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14795 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 305 Comment
  CHSC103724  Juncus bufonius var. congestus Lowell Ahart 2010-5-14 16666 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  CHSC112937  Juncus bufonius var. congestus B. Castro 2012-5-29 1925 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
  UC1250332  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte s of Oroville Comment
  CHSC61351  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7101 Butte On the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles northeast of Feather Falls. 1036 Comment
  JEPS114882  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  RSA726659  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14300 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
  SD192836  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, ca. 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, ca. 0.25 mile west of the Ponderosa Dam. 257 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
  CHSC39337  Juncus ensifolius Lowell Ahart 1983-6-26 4137 Butte Found along the edge of the East Fork of Canyon Creek, near Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS104263  Juncus ensifolius Lowell Ahart 2003-6-30 10336 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  CHSC40351  Juncus exiguus Lowell Ahart 1985-6-30 5086 Butte 10 yards south of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  UC1609084  Juncus hemiendytus var. hemiendytus Lowell Ahart 1993-6-20 6974 Butte about 1/2 mi s of Quartz Hill (tracks of a logging road) 1219 Comment
  CHSC41911  Juncus howellii Lowell Ahart 1983-8-16 4294 Butte Along the banks of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  HSC100753  Juncus laccatus Lowell Ahart 2011-8-23 17647 Butte Along Pinkard Creek, E of the corral , 1 mi. N of Lost Creek Reservoir Dam, 4 (air) mi. NE of Clipper Mills. 1134 Comment
  SBBG128543  Juncus laccatus L. Ahart 2011-8-23 17647 Butte Pinkard Crk flows through the meadow, E of the corral, ca. 1 mi N of Lost Crk Reservoir Dam, ca. 4 mi NE of Clipper Mills 1133 Comment
  CHSC93376  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12541 Butte In a vernal pool, about 100 yards southeast of the fence and tower, pasture fields, about 7/8 mile north and 1 3/4 miles east of Honcut. 53 Comment
  CAS-BOT-BC110143  Juncus leiospermus var. leiospermus J. D. Jokerst 1984-4-6 1964 Butte Ca. 0.5 mile north of Kunkle Resv and several hundred meters southeast of Lago Vista where it turns from east to the north. Comment
  CHSC113248  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 356 Comment
  JEPS104274  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 Butte On the high water line of vernal pools, pasture field, ca 130 yd south of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 332 Comment
  JEPS110151  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12604 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/2 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 339 Comment
  UC600803  Juncus mexicanus H. F. Copeland 1930-7-28 Butte by Humbug Road Jonesville 1828 Comment
  POM196141  Juncus nevadensis E. B. Copeland 1929-7-29 s.n. Butte Near Butte Creek House, above Jonesville. 1750 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
  JEPS103511  Juncus occidentalis Lowell Ahart 2002-6-21 9740 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  UCD141681  Juncus oxymeris Robert E. Preston 1982-7-16 337 Butte Crane Valley. Comment
  CHSC100489  Juncus patens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15418 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC54194  Juncus patens Vernon H. Oswald; Lowell Ahart 1991-5-31 4638 Butte Dan Beebe Trail, Lake Oroville State Recreation Area, on the south side of Thermalito Diversion Pool and on the north side of Oroville Dam Blvd East, between the 4 and 5 mile posts (ca. 4.5 miles). Along a drainage crossing the trail. 85 Comment
  JEPS117673  Juncus tenuis Lowell Ahart 2010-9-21 17225 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  RSA0035818  Juncus tenuis Lowell A. Ahart 2008-6-2 14804 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  CHSC96750  Juncus trilocularis Lowell Ahart 2007-6-12 14080 Butte On east side of Rockerfeller Road, at the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  JEPS113760  Juncus usitatus Lowell Ahart 2007-8-19 14493 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  RSA726657  Juncus usitatus L. Ahart 2007-7-5 14250 Butte Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 23 Comment
  CHSC49630  Juncus xiphioides Vernon Oswald 1987-5-25 2925 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. On the flood plain of the creek. 68 Comment
  JEPS115826  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  RSA754386  Kickxia elatine L. Ahart 2009-7-3 15991 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC33693  Kumlienia hystricula L. Ahart 1981-4-29 2717 Butte Along edges of a small stream near Ponderosa Dam, near Forbestown. 500 Comment
  UC600742  Kyhosia bolanderi H. F. Copeland 1930-7-25 1322 Butte below cabin Jonesville Comment
  CHSC75309  Kyllinga brevifolia Lowell Ahart 1999-5-24 8082 Butte Along the steps on the south side of the building, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC100521  Lactuca saligna Lowell Ahart 2008-11-4 15400 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  JEPS104647  Lagophylla glandulosa Lowell Ahart 2003-8-3 10465 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi (air) se of Oroville. 60 Comment
  CAS-BOT-BC341300  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  SEINET10474765  Lagophylla glandulosa subsp. serrata Mary Susan Taylor 1982-6-24 Taylor 4748 Butte T22N R4E sw/ne sec 14. Pulga SW quad. Mixed Evergreen Forest; e side of Ponderosa Way (Rim Rd), 1.6 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2850 ft. 869 Comment
  CHSC35667  Lamarckia aurea R. E. Preston 1982-4-22 257 Butte Slope at lakeside; Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  RSA0060802  Lamium purpureum Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17814 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  CHSC8158  Lasthenia californica D. McClain 1969-3-20 82 Butte 20 yds. from Upper Bidwell Park Rd., 1/2 mi. from entrance of Upper Bidwell Park, Chico. 60 Comment
  SEINET11806701  Lasthenia californica Unknown 1981-1 15 Butte 1 mi E of Chico, 100 yds S from Hwy 32 76 Comment
  JEPS107750  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  UC1363795  Lasthenia fremontii Robert Ornduff 1958-4-19 4908 Butte 2 mi e Chico (on Hwy 32) Comment
  HSC68177  Lasthenia platycarpha J. P. Smith 1973-3-22 5908 Butte Along S.R. 149 just N of junction with U.S. 70 Comment
  CHSC113350  Lathyrus angulatus Lowell Ahart 2014-5-13 19461 Butte Below the high water line of Lake Oroville, along the old paved road, about 50 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of Oroville. 259 Comment
  CHSC45907  Lathyrus angulatus Lowell Ahart 1978-5-15 1727 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  RSA767796  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 air miles northeast of Oroville 264 Comment
  CDA4180  Lathyrus hirsutus L. Ahart 2000-6-17 8483 Butte About 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. Comment
  RSA406664  Lathyrus jepsonii subsp. californicus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  SEINET10940068  Lathyrus nevadensis Mary Susan Taylor 1980-4-18 Taylor 2509 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC65553  Lathyrus nevadensis var. nevadensis L. P. Janeway 1995-6-13 4783 Butte About 0.75 mi east of the western end of Jackson Ranch Ridge; along Road 21N25Y. 1158 Comment
  JEPS84919  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  SEINET956202  Lathyrus sulphureus Carl B. Wolf 1937-1 8730 Butte Northern Sierra nevada. 5 miles below magalia on oroville road. 610 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC321780  Layia fremontii Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch 50 Comment
  UC179642  Layia fremontii A. A. Heller 1914-4-14 11292 Butte 8 mi n Oroville Comment
  CHSC52966  Lemna gibba Vernon H. Oswald 1991-2-23 4470 Butte Chico Sewer Treatment Plant on River Rd, ca. 4.5 mi w of Chico. In an irrigation ditch along the west boundary of the treatment plant. 39 Comment
  CHSC103014  Lemna minuta Lowell Ahart 2009-10-8 16410 Butte On the south side of the road, about 50 yards east of Parking Lot 15, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC99306  Leontodon saxatilis subsp. longirostris Lowell Ahart 2008-5-21 14768 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. 246 Comment
  RSA30425  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Plentiful near Cohasset. Near the upper limit of the digger pine in the Sierra foothills. Comment
  CHSC104003  Lepidium didymum Lowell Ahart 2010-5-28 16740 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  UCD115866  Lepidium pinnatifidum M. S. Taylor; L. Ahart 1982-10-11 5154 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  CHSC36973  Leptosiphon acicularis L. Ahart 1982-5-3 3404 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC90798  Leptosiphon ciliatus Lowell Ahart 2005-5-2 11765 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC97027  Leptosiphon harknessii Susan Bazell; R. Schlising 2007-6-21 53 Butte East of Jonesville on Lassen National Forest Road 26N27. On flat gravelly spot at edge of road across from Butte Creek House. 1767 Comment
  CHSC35111  Leptosiphon parviflorus R. Schlising; R. Banchero 1981-4-17 4037 Butte SE of Oroville and NE of Honcut, 1.1 mi S of jct Grubbs and Dunstone Roads, along latter. Comment
  CHSC50799  Lessingia nana Vernon Oswald; Mary Bailey 1990-8-2 4430 Butte North side of Neal Rd, 0.3 mi east of Hwy 99. Pasture bordering the intermittent stream draining Nance Canyon. 60 Comment
  CAS-BOT-BC341743  Lessingia nana Rimo Bacigalupi; G. T. Robbins 1955-7-15 5304 Butte Just above Big Chico Creek, about 4 miles above the Hooker Oak 121 Comment
  CHSC30277  Lessingia nemaclada M. S. Taylor 1979-8-4 2171 1/2 Butte On s side of Hwy 70, ca. 1 mi n of Cresta Powerhouse, ca. 30 mi n of Oroville. 487 Comment
  UC725608  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte lower end of Honey Run grade at Paradise Comment
  CAS-BOT-BC341780  Lessingia nemaclada Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile north-east of Oregon City 400 Comment
  CAS-BOT-BC342063  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC334597  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of teh Feather River near the Poe Power House about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC56387  Leucothoe davisiae Lowell Ahart 1989-9-21 6396 Butte along a small branch of French Creek, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CAS-BOT-BC444184  Lewisia nevadensis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  SEINET10572650  Lewisia rediviva Mary Susan Taylor 1973-1 Taylor 14 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  UCD13237  Lewisia rediviva Bot. 108 student - Ray? 1974-4-8 79 Butte California: Butte Co. Near Oroville, between Route 1330 and Coal Canyon. Elev. ca. 500 ft. 152 Comment
  UC175517  Ligusticum californicum A. A. Heller 1913-6-7 10795 Butte near Stirling 1074 Comment
  RSA776054  Lilaea scilloides P. Reisentz 1979-5-11 s.n. Butte 0.7 mile W on Lunt Road from Highway 70, north of Oroville Comment
  SEINET10968804  Lilaea scilloides Mary Susan Taylor 1980-5-31 Taylor 2772 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC130565  Lilium humboldtii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby Comment
  CHSC113471  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CAS-BOT-BC133044  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  UCD116443  Limnanthes H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  CHSC31850  Limnanthes alba L. Ahart 1971-4-21 75 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC37688  Limnanthes alba M. S. Taylor 1981-5-7 3643 Butte Along spur rd, ca. 1/5 mi se of its jct with 20N24.6 (Fields Ridge Rd), ca. 3 air mi s of Feather Falls. 975 Comment
  SEINET6670254  Limnanthes alba M. Plotkin 1997-3-21 12 b Butte Northeast of Chico Municipal Airport, south of dirt road diverging east from Hicks Road where Hicks Road makes a sharpturn west, 100 feet east of airport fence 91 Comment
  SEINET10495212  Limnanthes alba Mary Susan Taylor 1981-5-7 Taylor 3643 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC88571  Limnanthes alba subsp. alba T. W. Henrich 2004-4-15 Butte In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  UCD169373  Limnanthes alba subsp. alba T. W. Henrich 2004-4-12 s.n. Butte Meghdadi Property' in southeast Chico; about 0.5 km north of Doe Mill Road, about 0.5 km east of south end of Potter Road, and 0.25 km west of old stone fence. Comment
  JEPS119680  Limnanthes alba subsp. versicolor Lowell Ahart 2012-5-4 17986 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC726865  Limnanthes douglasii A. A. Heller 1938-4-14 15033 Butte n Oroville (treeless summit of mt.); Table Mountain 304 Comment
  HSC23392  Limnanthes douglasii Willis Ball 1970-3-7 85 Butte Growing 1/4 mi. E of Hwy. 99E, beside Skyway to Paradise from Chico. 61 Comment
  RSA435674  Limnanthes douglasii subsp. douglasii L. Williams 1927-4-11 s.n. Butte Richardson s Springs. Comment
  CHSC10643  Limnanthes douglasii subsp. nivea Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  UC203549  Limnanthes douglasii subsp. rosea A. A. Heller 1914-3-23 11224 Butte in low hills 8 mi n Oroville Comment
  CDA35336  Limnanthes douglasii subsp. rosea T. C. Fuller 1958-4-15 4800 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  JEPS18178  Limnanthes douglasii subsp. rosea Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5611 Butte near junction of road to Oregon City (along Oroville-Concow road) 388 Comment
  RSA715420  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 29 Comment
  CHSC115336  Limosella acaulis Lowell Ahart 2015-4-24 20068 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC31874  Limosella aquatica L. Ahart 1978-4-2 1624 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS115626  Linanthus ciliatus Lowell Ahart 2009-5-15 15678 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  SEINET12326966  Linanthus filipes R. J. Goedl 1979-1 27 Butte 3.5 mi E of Hwy 99 and Chico, 20 ft N of Skyway 213 Comment
  UC196267  Linanthus parviflorus A. A. Heller 1914-4-3 11258 Butte 8 mi n Oroville Comment
  SEINET10569965  Lindernia anagallidea Mary Susan Taylor 1978-7-22 Taylor 1845 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, S of Chico, in rice field. 30 Comment
  JEPS97415  Lindernia dubia var. anagallidea Lowell Ahart 1995-7-15 7595 Butte 11/2 mi N and 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  RSA0037498  Lindernia dubia var. anagallidea Lowell A. Ahart 2013-7-9 18832 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC75980  Lipocarpha micrantha Lowell Ahart 1999-8-13 8180 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC111976  Lipocarpha micrantha Lowell Ahart 1983-9-17 4430 Butte Near Kunkle Res, near Paradise. 600 Comment
  CHSC65525  Listera convallarioides L. P. Janeway 1995-8-5 4890 Butte Along West Branch Feather River about 0.1 mi above Snag Lake. 1725 Comment
  SEINET10871262  Lithophragma Mary Susan Taylor 1981-4-28 Taylor 3569 A Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CHSC45969  Lithophragma bolanderi Lowell Ahart 1974-4-7 355 Butte Peter Ahart Ranch, about 1 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  POM92061  Lithophragma bolanderi C. C. Bruce 1897-03 1842 Butte [No further location information] Comment
  CHSC2363  Lithospermum californicum R. Carter 1965-5-1 194 Butte Found on Bean Creek Rd., 2 mi. SE of intersection with Bald Rock Rd., on E bank above road. 1005 Comment
  CHSC23637  Lithospermum californicum M. S. Taylor 1976-4-4 1055 Butte On n side of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 609 Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  CHSC4377  Lolium multiflorum M. M. Gregg 1966-5-21 171 Butte NW corner of CSC campus around the artificial ski jump. Chico. Comment
  CHSC66461  Lolium multiflorum Vernon H. Oswald; Lowell Ahart 1996-6-10 7734 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 bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  UCD66074  Lolium multiflorum M. Vincent 1964-4-9 536 Butte Clark Rd., 5 miles south of Pearson Rd. Comment
  CHSC31716  Lolium perenne L. Ahart 1972-5-8 104 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10591974  Lolium perenne Lowell Ahart 1988-9-4 Ahart 6175 Butte On dry disturbed soil, along the N side of a branch of Last Chance Creek, E of the dirt road, about 1 mile W and little N of Bald Mountain. 1006 Comment
  UCD66485  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte 8 miles north of Oroville. Comment
  UC765468  Lomatium caruifolium var. denticulatum R. F. Hoover 1938-4-24 3238 Butte 3 mi. n. Chico Comment
  JEPS127062  Lomatium dasycarpum subsp. tomentosum Lowell Ahart 2016-5-14 20824 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  RSA32887  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1939-4-14 15380 Butte Butte County: near Pine Creek, Plentiful in a field along the road E of US 99E, in clay soil Comment
  UC1532355  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  SEINET10454503  Lomatium marginatum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4098 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CHSC102185  Lomatium marginatum var. marginatum George W. Hartwell 2009-3-19 Butte Concow Road, 3-4 miles above Concow Reservoir on a serpentine ridge and adjacent steep, rocky hillsides burned by summer wildfire in 2008. 861 Comment
  CHSC98573  Lomatium marginatum var. marginatum L. P. Janeway; B. Castro 2007-5-6 8970 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
  SEINET12120810  Lomatium tomentosum M. S. Taylor 1980-1 2742 Butte along Rocky Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CHSC1964  Lomatium utriculatum M. Roberson 1956-2-20 Butte Near Paradise, along Skyway. 426 Comment
  CHSC31865  Lomatium utriculatum L. Ahart 1977-4-16 1307 Butte Along sides of North Honcut Creek; Peter Ahart Ranch, Honcut. 50 Comment
  SEINET8056664  Lonicera hispidula M. J. Williams 1984-5-25 84- 34 -1 Butte Feather River Canyon, Hwy 70, 1.5 mile W of Poe Power Dam. 457 Comment
  CHSC116219  Lonicera involucrata var. involucrata Lowell Ahart 2015-6-16 20230 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  UC1609033  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte 6 (air) mi ne Feather Falls (about 200 yards w of the bridge, w side of river); Fall River 1036 Comment
  UC600685  Lonicera involucrata var. involucrata H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville 1981 Comment
  CHSC21057  Lotus corniculatus M. S. Taylor 1975-6-25 804 Butte Ca. 500 yds w of Mud Creek, ca. 1/2 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 243 Comment
  POM27895  Lotus humistratus C. C. Bruce 1897-05 2037 Butte [No location data on label] Comment
  UC1609418  Lotus incanus Lowell Ahart 1993-6-26 7024 Butte about 1 mi w Lost Creek Reservoir (on w side of the dirt road); Mooreville Ridge 1188 Comment
  SEINET10906991  Lotus nevadensis Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5224 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CDA27290  Lotus oblongifolius var. oblongifolius Vernon H. Oswald & Lowell Ahart 1998-8-11 9465 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mile north of Four Trees-Coyote Gap Road. Comment
  UC862220  Lotus purshianus var. purshianus A. A. Heller 1938-7-20 15289 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  UC600394  Lotus purshianus var. purshianus H. F. Copeland 1932-7-24 Butte by small stream running down from the w to Butte Creek meadows Jonesville, Butte Creek Meadows Comment
  JEPS105661  Lotus strigosus L. P. Janeway, John Hunt, Adam Henderson 2003-5-13 7785 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.2 km southwest of mouth of Frey Creek 290 Comment
  UCR247563  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 s.n. Butte south-southwest of Richvale 23 Comment
  RSA0118716  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. 26 Comment
  UCD149021  Ludwigia decurrens M. Stewart; C. Mutters 2011-9-13 137332 8 Butte south-southwest of Richvale. Comment
  CHSC113152  Ludwigia palustris Lowell Ahart 2013-11-13 19250 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  JEPS95926  Ludwigia palustris Lowell Ahart 1999-8-22 8186 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
  UC204453  Ludwigia palustris A. A. Heller 1914-8-13 11683 Butte hills 8 mi. n. Oroville Comment
  JEPS98531  Ludwigia peploides subsp. montevidensis Lowell Ahart 2000-7-18 8601 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC61054  Ludwigia peploides subsp. peploides Vernon H. Oswald 1993-7-29 5736 Butte Gray Lodge Wildlife Management Area W of Gridley, 0.3 mi S of Rutherford Rd. on the first levee road E of the headquarters complex. In a drainage ditch. 19 Comment
  JEPS110472  Lunaria annua Lowell 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 548 Comment
  CAS-BOT-BC198305  Lupinus Charles Piper Smith 1949-4-21 49123 Butte Nimshew, 0.7 miles southwest, Oroville Road Comment
  RSA0036364  Lupinus albicaulis Daisie Huang 2006-8-3 06080306 Butte Butte. 1327 Comment
  UC392197  Lupinus albicaulis var. shastensis E. B. Copeland 1929-7-24 Butte Jonesville 1600 Comment
  CAS-BOT-BC196245  Lupinus albifrons var. eminens A. A. Heller 1902-5-16 14340 Butte East Butte, Marysville Buttes, in the Sacramento Valley Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  UC865499  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 mi below Centerville (in Sierra foothills); Sierra foothills, below Centerville Comment
  SEINET10484853  Lupinus bicolor Barbara J. Ertter, Jeffrey Strachen; Lowell Ahart 1980-5-7 Ertter 3306 Butte North Table Mountain ca 5 airmiles north of Oroville, flat-topped basalt butte, near parking area. 396 Comment
  SEINET10874148  Lupinus bicolor subsp. pipersmithii Lowell Ahart 1985-4-1 Ahart 4873 A Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC3568  Lupinus bicolor var. tridentatus R. D. Briggs 1966-3-5 32 Butte Three miles due north of Oroville, on hwy #70. Comment
  CHSC82216  Lupinus bicolor var. tridentatus Lowell Ahart 2002-4-14 9488 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 Comment
  CHSC96218  Lupinus latifolius var. columbianus R. Fischer 2006-5-5 980 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on wooded hillside, black oak overstory, ca. 0.25 miles east of Big Chico Creek on the north side of 10 Mile House Road. 304 Comment
  CHSC60982  Lupinus lepidus var. sellulus Lowell Ahart 1993-6-26 7042 Butte About 1/4 mile north of Jackass Flat, Mooreville Ridge, about 1 1/4 miles (air) north-west of Lost Creek Reservoir. 1188 Comment
  UC725973  Lupinus nanus A. A. Heller 1938-4-14 15034 Butte summit of Table Mountain 609 Comment
  CHSC3651  Lupinus nanus var. apricus Robert D. Briggs 1966-3-28 R.- 94 Butte East end of table Mt., 2 miles east of Cherokee. Comment
  JEPS115828  Lupinus nanus var. vallicola Lowell Ahart 2009-4-26 15618 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC103001  Lupinus pachylobus Lowell Ahart 2009-6-3 15831 Butte Meadow, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 209 Comment
  CHSC109091  Lupinus pachylobus Lowell Ahart 2012-4-20 17890 Butte North edge of the trail, about 50 yards east of Big Chico Creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 202 Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  CAS-BOT-BC8229  Lupinus pennellianus Amos Arthur Heller 1940-6-5 15705 Butte Along the Feather River Higway between Arch Rock Tunnel and Pulga Comment
  CHSC31110  Lupinus polycarpus Roberta A. Boer 1980-4-13 3 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC25291  Lupinus polyphyllus var. burkei M. S. Taylor 1977-7-15 1418 Butte On Humbug Rd between Covered Bridge and Paradise, ca. 3 mi s of Paradise. Comment
  CHSC2511  Lupinus stiversii W. Fitzwater 1958-4-19 Butte A Few miles above Paradise. Comment
  CHSC33557  Lupinus stiversii M. S. Taylor 1981-5-5 3596 Butte On e side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  RSA126017  Lupinus stiversii E. K. Balls 1957-5-22 22510 Butte Near Tobins, about 7 mi. ne. Butte-Plumas Co. line. 640 Comment
  SEINET10491009  Lupinus vallicola subsp. vallicola Taylor 1981-4-30 Taylor 3572 Butte Forbestown quad. Nw corner of jct of forbestown rd and lumpkin rd (feather Falls turnoff), ca 10 air mi e of oroville. Associates: trifolium hirtum. 549 Comment
  CHSC52707  Luzula cascadensis L. P. Janeway 1987-6-26 2328 Butte Meadow just northwest of Logue Meadows along the road to Lynch Meadows. 1325 Comment
  CHSC59026  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir. 1676 Comment
  CHSC52709  Luzula comosa var. laxa L. P. Janeway 1988-6-19 2840 Butte 3.3 mi N of Stirling City toward Inskip, along logging road 0.2 mi W of Skyway. Seepy area adjacent to the road. 1219 Comment
  UC600795  Luzula comosa var. laxa H. F. Copeland 1932-7-17 Butte In damp woods across road from Copeland Cabin (Jonesville); Jonesville 1550 Comment
  CHSC7189  Luzula comosa var. subsessilis H. Alger 1969-2-23 2 Butte 10 ft. s of Helltown Rd., 0.8 mi n of Centerville. 243 Comment
  CHSC32677  Luzula macrantha M. S. Taylor 1981-3-24 3435 A Butte S side of Hwy 70, ca. 1/4 mi w of Cresta Powerhouse. 487 Comment
  CHSC112442  Luzula subsessilis Lowell Ahart 2013-5-18 18698 Butte About 100 yards east of the intersection of Forbestown Road and the Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  CHSC84881  Lychnis coronaria Lowell Ahart 1983-7-29 4229 Butte Found along the edge of the dirt road, about 1/4 mile west of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  RSA0036439  Lycopus americanus Lowell A. Ahart 2012-10-20 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC38546  Lythrum hyssopifolia Vernon Oswald 1983-5-31 583 Butte Upper Bidwell Park, Chico, near the trail on the s side of Chico Creek between Day Camp and the power lines. 91 Comment
  CHSC117344  Lythrum portula B. Castro; Sabrina Bell 2015-5-21 2045 Butte Sacramento Valley. Off E edge of Thermalito Afterbay, ca 1.36 air mi E of Hwy 99 and 1 mi S of Highway 162E. Just S of the Afterbay perimeter road, at NE corner of low pond (impoundment) with willows. 43 Comment
  JEPS120768  Lythrum portula Lowell Ahart 2013-9-20 19060 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  JEPS94571 Image available Lythrum salicaria Lowell Ahart 1997-6-29 7742 Butte Wyman Ravine; s side, on w side of Lone Tree Rd., about 6 mi s of Oroville 36 Comment
  JEPS120854  Lythrum tribracteatum Lowell Ahart 2013-6-18 18806 Butte About 60 yards E of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  SEINET10474299  Madia elegans Mary Susan Taylor 1977-11-12 Taylor 1541 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC109772  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET10474802  Madia elegans subsp. densifolia Mary Susan Taylor 1979-8-4 Taylor 2172 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC34707  Madia elegans subsp. vernalis M. S. Taylor 1981-5-22 3800 A Butte Around a landing, ridge n of Flea Valley Creek drainage, n of Pulga, ca. 5 air mi e of Magalia. 1005 Comment
  CAS-BOT-BC344321  Madia exigua John Thomas Howell 1962-6-15 37487 Butte Magalia 731 Comment
  CAS-BOT-BC344322  Madia exigua John Thomas Howell 1962-6-16 37609 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC115156  Madia exigua Lowell Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC164  Madia exigua M. Roberson 1956-6-4 Butte SW Paradise, along Skyway. 426 Comment
  CHSC32361  Madia exigua J. D. Jokerst; M. S. Taylor, R. A. Schlising 1980-6-14 835 Butte Little Bald Rock, N slopes. 914 Comment
  SD122590  Madia exigua Lowell Ahart 1984-6-8 4666 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown 370 Comment
  CAS-BOT-BC343278  Madia gracilis John Thomas Howell 1962-6-15 37479 Butte Magalia 731 Comment
  CHSC26704  Madia gracilis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1458 Butte On n side of Old Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CHSC46956  Madia gracilis Lowell Ahart 1978-6-2 1750 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC48179  Madia gracilis Vernon Oswald 1985-5-28 1787 Butte Oroville-Quincy Hwy at the first pull-out on the e side of the road 0.8 mi n of Bidwell Bar Bridge. 320 Comment
  CHSC43625  Madia subspicata Vernon Oswald 1985-5-1 1736 Butte Upper Bidwell Park, Chico, along Yahi Trail just e of Parking Area R. 228 Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CDA13327  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13173 Butte Sierra Nevada; S end of 22N89. Approx. 0.5 m. on 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  CHSC62530  Malacothrix floccifera B. Castro 1993-7-27 486 Butte Ca 3 mi NW of Brush Creek, along USFS Rd 22N34 as it parallels French Creek, ca 0.5 mi SW of the low-water crossing at the confluence of French and Peavine Creeks. 618 Comment
  CHSC87889  Malacothrix floccifera Lowell Ahart 2004-6-22 11113 Butte Road cut, on the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  SEINET10904853  Malacothrix floccifera Mary Susan Taylor 1979-8-4 Taylor 2183 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CDA31965  Malva nicaeensis L. Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC101814  Malva nicaeensis Lowell Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10479995  Malva nicaeensis Mary Susan Taylor 1982-4-28 Taylor 4360 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC46808  Malva parviflora R. A. Schlising 1986-9-14 4504 Butte NW part of county, W of Pine Creek Cemetery. Comment
  JEPS95294  Malva parviflora Lowell Ahart 1994-3-30 7277 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  CHSC34966  Malvella leprosa R. A. Schlising 1981-9-23 4204 Butte Near crossing of Little Butte Creek by Seven Mile Lane, 0.1 mi S of jct with Nelson West Road. 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
  CHSC46037  Marsilea vestita Lowell Ahart 1978-5-15 1724 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC2825  Matricaria discoidea David Prall 1965-4-25 Butte Humbug Road 0.3 miles west of junction of Honey Run Rd. (covered bridge). Roadside. 198 Comment
  CHSC90951  Matricaria discoidea Lowell Ahart 2005-4-18 11731 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
  CHSC29116  Meconella californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2459 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  CAS-BOT-BC422642  Meconella californica Junea Kelley 1920-4-24 s.n. Butte Los Vergils Comment
  SEINET10904036  Medicago polymorpha var. polymorpha Mary Susan Taylor 1981-5-1 Taylor 3587 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  CHSC3341  Melaleuca nodosa Robert L. Smith 1966-3-1 33 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CAS-BOT-BC271132  Melica aristata E. B. Copeland 1929-7-18 337 Butte Jonesville 1550 Comment
  CHSC42917  Melica aristata Lowell Ahart 1987-7-8 5800 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CAS-BOT-BC269388  Melica californica L. W. Swift 1934-5-7 102 Butte Outside forest 731 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
  CHSC42439  Melica californica Lowell Ahart 1987-5-9 5582 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  UC926585  Melica californica G. P. Van Eseltine 1918-4-29 Butte 4 mi se Chico (near bridge over Battle Creek) Comment
  SEINET10508156  Melica californica Lowell Ahart 1985-5-15 Ahart 4974 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  POM204788  Melica californica var. nevadensis Copeland 1903-5-2 3254 Butte Chico Comment
  CHSC94575  Melilotus albus Lowell Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  HSC96978  Melilotus indicus L. Ahart 2005-5-2 11772 Butte E side of the Sacramento River, NW of Parrott Landing, about 1 mi. SE of Ord Ferry, about 2 mi. SE of Ordbend, about 12 mi. SW of Chico. 26 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
  SEINET13710343  Melissa officinalis Lowell William Ahart, Lowell William Ahart 2002-1 9931 Butte 2 Mi. N Town of Feather Falls (39 Deg 36'44.9'N, 121 Deg 15'59.8"W) 2433 Ft. 742 Comment
  CHSC43846  Mentha canadensis B. Castro 1987-8-25 203 Butte In Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC25275  Mentha pulegium K. R. Stern 1977-6-25 Butte Chico. Comment
  RSA771481  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15577 Butte Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg ) of Honcut, 7.2 mi. SE (114 deg ) of Gridley 35 Comment
  CHSC11791  Mentzelia dispersa E. B. Copeland 1929-7-19 Butte Jonesville. Found on two rock-slides in full sunlight, along Butte Creek. 1550 Comment
  CHSC10754  Micranthes californica Lowell Ahart 1965-3-1 Butte Ahart Ranch, Honcut. 42 Comment
  CHSC1673  Micranthes californica R. Carter 1964-3-28 70 Butte 8 mi. E of Oroville at 6110 Woodleaf St. Rt. ca. 10 yds. W of entrance to driveway. 121 Comment
  CHSC99639  Micranthes californica M. Jenkins; K. Schierenbeck 2007-3-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  UCD102816  Micranthes californica Robert R. Kehlor 1951-4-14 31 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville, on Mt. Ida road. Comment
  CAS-BOT-BC429075  Micranthes odontoloma Mrs. C. C. Bruce 1898-7-1 2409 Butte Lassen peaks Comment
  CAS-BOT-BC429200  Micranthes oregana H. F. Copeland 1929-6-1 1240 Butte Jonesville 1524 Comment
  SJSU10057  Micropus californicus C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  UCD80099  Micropus californicus var. californicus CNPS SN Foothill Team 2005-4-13 SNFN 0079 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 30 m from the western boundary and 60 m from the southern boundary. 85 Comment
  UCD134504  Micropus californicus var. californicus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles east of Oroville. Comment
  UC831277  Microseris acuminata A. A. Heller 1914-4-14 11291 Butte grain field 8 mi n Oroville Comment
  UCD80104  Microseris douglasii subsp. douglasii CNPS SN Foothill Team 2005-4-13 SNFN 0080 c Butte Private Rock Ranch (horse ranch) owned by Chris and Maria Rock. The plot location on the ranch is near the SE corner of the south pasture, approximately 25 m from the south fence. 92 Comment
  SEINET10475279  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 Ahart 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC44273  Microseris nutans V. Oswald; L. Ahart 1988-6-17 3395 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC51046  Microseris sylvatica J. D. Jokerst 1985-4-16 1971 Butte Cherokee area east of Table Mt, south of Campbell Flat in my backyard. Comment
  CHSC30357  Microsteris gracilis J. D. Jokerst 1979-3-5 1137 Butte Top of North Table Mt., 300 m NW of the intersection of E edge of section 17 and Cherokee Rd. 300 Comment
  JEPS86871  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte 4.4. mi ne Keefer Road (along Cohasset Hwy, then 0.4-0.6 mi s along private dirt road, Griffith residence); Cohasset Ridge 400 Comment
  UC943806  Mimulus aurantiacus var. grandiflorus H. E. McMinn 1946-5-10 5503 Butte ca. 9 mi e Oroville Comment
  POM264771  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SEINET12334052  Mimulus bifidus Unknown 1972-1 4 Butte P.G. & E. stop, Shady Rest along Hwy 70, N fork of Feather River ca 1 mi N of Cresta Power dam 183 Comment
  CDA41666  Mimulus bifidus subsp. bifidus J. R. Keck Jr. 1978-5-23 PDR# 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  CDA41428  Mimulus glaucescens Schoenig 1998-7-5 98 -76 Butte East roadside of Highway 32, circa 1 mile north of road to Butte Meadows. Vicinity of Loma. Comment
  RSA795591  Mimulus glaucescens Christopher T. Ivey 2010-6-7 375 Butte Honey Run Road, 3.5 km northeast of bridge crossing Butte Creek, in roadside ditch. 165 Comment
  UC26940  Mimulus glaucescens Mrs. R. M. Austin March 1898 2104 Butte Comment
  CHSC113293  Mimulus guttatus Lowell Ahart 2014-4-9 19344 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC98977  Mimulus guttatus Lowell Ahart 2008-5-12 14737 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS80613  Mimulus guttatus M. S. Taylor 1980-4-18 2501 Butte ca. 1 mi s Nimshew (ca. 1/4 mi e of Nimshew Rd.); Paradies quad. 609 Comment
  JEPS81221  Mimulus guttatus L. R. Heckard and J. C. Hickman 1981-4-18 5496 Butte 3 mi ne Kiefer road junction (on Cohasset Road, ne of Chico) 243 Comment
  JEPS94733  Mimulus kelloggii Lowell Ahart 1998-6-3 7971 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC1609161  Mimulus kelloggii Vernon H. Oswald and Lowell Ahart 1993-3-24 5242 Butte n Pentz historical site (e side of canyon, on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  UC103727  Mimulus latidens Mrs. R. M. Austin 1890-1 164 Butte Little Chico Creek Comment
  POM173680  Mimulus latidens H. F. Copeland 1923-5-1 916 Butte Nelson. Comment
  POM264937  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC44666  Mimulus moschatus R. Banchero 1980-5-12 158 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  CHSC44686  Mimulus moschatus R. Banchero 1980-6-12 207 Butte Along Hwy 32 ca 3.9 mi S of tis jct with Humboldt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  CHSC64018  Mimulus moschatus B. Castro 1987-8-29 213 Butte At s edge of Butte Ck ca 2.1 mi S of Skyway and ca 1/4 mile E of Hwy 99 bridge. 60 Comment
  POM219092  Mimulus moschatus H. F. Copeland 1927-9-3 361 Butte Jonesville. Comment
  UC426952  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville 1550 Comment
  SEINET10570265  Mimulus primuloides Mary Susan Taylor 1978-7-19 Taylor 1790 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  JEPS97433  Minuartia californica Lowell Ahart 1995-5-30 7588 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  SEINET7067143  Minuartia douglasii A. G. Vestal 1947-4-30 s.n. Butte Lava at Table Mountain northeast of Oroville. Coordinate datum: NAD27. Comment
  UCSB44158  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road; from Cherokee Road; north of Oregon City Comment
  CAS-BOT-BC22742  Moenchia erecta Lowell Ahart 1980-5-4 2192 Butte East of Oak Grove Cemetary, ca 3/4 miles SE of Hurlton 600 Comment
  UCD99630  Mollugo verticillata Rimo Bacigalupi; L. R. Heckard 1962-6-1 8581 Butte road to Centerville, about 200 feet east of its inception at the Paradise Road junction. 60 Comment
  CAS-BOT-BC219944  Monardella breweri subsp. lanceolata Lowell Ahart 1989-5-31 6330 Butte North of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  UC1124558  Monardella odoratissima subsp. glauca P. L. Johannsen 1936-7-16 923 Butte 1 3/4 mi E.S.E of Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC2035806  Monardella odoratissima subsp. glauca H. F. Copeland 1932-8-17 Butte At The Summit Jonesville 2000 Comment
  CAS-BOT-BC220456  Monardella sheltonii Mrs. C. C. Bruce 1897-5-1 1974 Butte Little Chico Comment
  CAS-BOT-BC220457  Monardella sheltonii Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC2422  Monardella sheltonii R. Carter 1965-6-15 227 Butte Found e of Paradise on Honey Run Rd., 2.4 mi. from intersection with Skyway on S side of road. 472 Comment
  CHSC768  Monardella sheltonii R. M. Staley 1952-7-1 Butte Honey Run. 243 Comment
  CHSC93083  Monardella sheltonii L. P. Janeway 1994-6-23 4672 Butte Northern Sierra Nevada Foothills. Pinkston Canyon Road about 400 ft east of Concow Road. 563 Comment
  CHSC60101  Monardella venosa B. Castro; L. P. Janeway 1992-5-10 456 Butte In bottom of canyon SE of Neal Road; ca 100 ft NW of intermittent creek. 85 Comment
  CHSC54372  Montia fontana subsp. amporitana M. Bailey 1991-3-8 548 Butte Edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC56081  Montia fontana subsp. chondrosperma L. P. Janeway 1988-6-25 2871 Butte In Coon Creek and near Bull Hill Road 1.0 mi from Skyway. 1554 Comment
  CHSC33124  Montia linearis M. S. Taylor 1981-5-22 3801 Butte In Flea Valley, ca. 100 ft e of jct Ponderosa Way and turnoff to Sawmill Peak, ca. 2 ft n of Sawmill Peak Rd. ca/ 4 air mi e of Magalia. 1127 Comment
  CHSC70812  Montia linearis B. Castro 1995-5-18 571 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow, in very moist soil just downslope from spring. 1109 Comment
  CAS-BOT-BC445035  Montia linearis A. A. Heller 1919-5-18 13179 Butte Mosquito Creek between Appleton and Coutelence Comment
  CHSC108765  Morus alba L. P. Janeway 2011-5-9 10252 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
  SEINET10605684  Muhlenbergia andina Lowell Ahart 1987-6-9 Ahart 5740 Butte On dry sand, around rocks, 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
  CDA32543  Muhlenbergia filiformis L. Ahart, Vernon H. Oswald 1999-10-3 8284 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
  CHSC42437  Muhlenbergia filiformis Lowell Ahart 1987-5-6 5558 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
  SEINET4343727 Image available Muhlenbergia filiformis Unknown 2009-11-19 16546 Butte Meadow in Foothill Woodland; About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Par about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UCD86607  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville. 1550 Comment
  JEPS100187  Muhlenbergia mexicana Lowell Ahart 2006-8-15 13174 Butte North edge of a wet area west of a large open meadow with bogs, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC274935  Muhlenbergia rigens Lowell Ahart 1982-10-15 3896 Butte N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  JEPS124199  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  JEPS98458  Myosotis discolor Lowell Ahart 2000-6-6 8458 Butte 5 air miles E of Oroville Dam (old gold mining pit, 200 yds NW of where the dirt road crosses Oregon Gulch creek, about 1/4 mi NE of the cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC45317  Najas guadalupensis Vernon Oswald 1988-10-25 3715 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CHSC24489  Nama lobbii M. S. Taylor 1976-6-28 1165 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  POM197047  Nama lobbii H. F. Copeland 1928-8-14 1068 Butte Neighborhood of Jonesville. On top of ridge between Jones Creek and Scotch-John Creek. 1829 Comment
  RSA4126  Nama lobbii E. B. Copeland 1930-6-27 s.n. Butte Jonesville. 1600 Comment
  CHSC6749  Nassella pulchra V. Hagaman 1968-4-19 476 Butte Cherokee Village, ca 200 yards E. of cemetary. Comment
  CAS-BOT-BC60371  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  SEINET10940373  Nasturtium officinale Mary Susan Taylor 1975-10-31 Taylor 983 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 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
  CHSC50415  Navarretia capillaris Vernon Oswald; Lowell Ahart 1990-6-27 4331 Butte Oro-Quincy Hwy at the south edge of Walker Plains, 0.3 mi west-northwest of Buckeye (site). 1536 Comment
  CHSC34986  Navarretia divaricata R. A. Schlising; R. Banchero 1981-5-20 4059 Butte E part of county, Lumpkin Ridge. Comment
  UC426936  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville 1550 Comment
  SEINET10496819  Navarretia divaricata Mary Susan Taylor 1980-5-15 Taylor 2629 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC61326  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-7-29 7125 Butte On the east side of an old water ditch for gold mining, about 1/8 mile north of the Snow Mine, about 2 1/2 miles north-east of Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC1292  Navarretia divaricata subsp. vividior M. Roberson 1956-5-21 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC87539  Navarretia divaricata subsp. vividior R. D. Fischer; Jenny Marr 2004-5-9 135 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on the Annie Bidwell Trail between Diversion Dam and junction of Bloody Pin Trail. 198 Comment
  JEPS107910  Navarretia filicaulis Lowell Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway 822 Comment
  RSA0037496  Navarretia filicaulis Lowell A. Ahart 2013-7-1 18818 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
  CHSC44337  Navarretia heterandra Lowell Ahart 1988-4-29 5961 Butte Near the ditch which was part of Honcut Flume, on the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC1251  Navarretia leptalea V. Holt 1951-7-8 Butte Butte Meadows. 1219 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
  POM74520A  Navarretia leucocephala subsp. leucocephala C. C. Bruce 1898-05 1970 Butte Sloughs Comment
  CAS-BOT-BC232626  Navarretia pubescens Lowell Ahart 1977-5-8 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC232627  Navarretia pubescens Lewis S. Rose 1963-6-5 6314 Butte 3 miles W of Palermo 45 Comment
  CHSC62748  Nemophila heterophylla L. P. Janeway 1993-6-9 4374 Butte Plumas National Forest. Oroville Ranger District. Swayne Hill Compartment. Southeast of Swayne Hill, along road 11N24 1.8 mi south of the 'low water crossing' of French Creek. East-facing slope above French Creek. Partially shaded road cutbank. 621 Comment
  JEPS107352  Nemophila heterophylla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11679 Butte Big Chico Creek Ecological Reserve. On the west side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  POM65257  Nemophila heterophylla A. A. Heller, H. E. Brown 1902-5-9 11606 Butte Berry Canyon (Near Clear Creek). Comment
  UC726899  Nemophila heterophylla A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  UC107250  Nemophila pedunculata H. E. Brown Mar 3 1897-Mar 22 1897 173 Butte near Clear Creek; ; Clear Creek, Butte Co. 53 Comment
  CHSC42354  Nemophila spatulata Lowell Ahart 1987-5-12 5641 Butte On damp bare broken black lava, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  CDA5772  Nicotiana alata L. C. Going 1964-4-2 Butte 694 Roberts Road, Paradise. 0 Comment
  JEPS95801  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD110203  Notholithocarpus densiflorus B. F. Smith 1965-10-18 60 Butte 3/4 mile east-northeast of Woodleaf. 1021 Comment
  CAS-BOT-BC400068  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CHSC24943  Odontostomum hartwegii M. L. McCrum 1976-4-21 14 Butte Ca. 4.0 mi ne of Chico, 2.1 mi e on Wildwood Ave., 0.1 mi n. 106 Comment
  CHSC31849  Odontostomum hartwegii L. Ahart 1977-4-16 1306 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  JEPS104455  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  JEPS22684  Odontostomum hartwegii Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte 1 mi. n. Chico airport (along Cohasset Rd., drainage of Mud Creek) 91 Comment
  UC143374  Odontostomum hartwegii Mrs. R. M. Austin May 1896 837 Butte Chico Comment
  RSA7434  Odontostomum hartwegii J. H. Morrison 1932-04 s.n. Butte Durham Comment
  CAS-BOT-BC349985  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC43597  Oreostemma alpigenum var. andersonii Vernon H. Oswald 1983-7-6 830 Butte Near Humboldt Rd. 3.4 mi NE of Butte Meadows. 1432 Comment
  UC179695  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC116375  Oreostemma elatum Sara M. Taylor; Scott Batiuk 2012-7-31 52 Butte Plumas National Forest. Drosera Pond. From Quincy, head west on Hwy 89, right/north on Hwy 422 toward Smith Lake, left/west on 25N20. Continue west on 25N57, left/west on 25N59. UTM Zone 10, 4428806 N, 660224 E. 1610 Comment
  JEPS123824  Orobanche uniflora var. uniflora Lowell Ahart 2015-4-18 20056 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) east of Oroville. Comment
  RSA0083241  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville. 1500 Comment
  SEINET12326963  Orthocarpus attenuatus R. E. Preston 1979-1 18 Butte N of Cherokee Rd, 5 mi N of Oroville 366 Comment
  SEINET10549653  Orthocarpus campestris Mary Susan Taylor 1978-5-7 Taylor 1603 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10549676  Orthocarpus erianthus Mary Susan Taylor 1973-1 Taylor 2 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10964395  Orthocarpus erianthus Mary Susan Taylor 1980-3-28 Taylor 2410 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  CHSC75387  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte East side of Sacramento River and north side of Big Chico Creek, Bidwell Sacramento River State Park west of Chico, along the dirt road leading into the Big Chico Creek river access. 36 Comment
  CHSC31776  Oxalis laxa L. Ahart 1975-5-12 765 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  HSC92457  Oxalis laxa L. Ahart 1975-5-12 766 Butte Along N Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut, ca. 12 mi. S of Oroville 43 Comment
  CHSC35669  Packera eurycephala var. lewisrosei R. E. Preston 1982-4-22 260 Butte Lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 286 Comment
  CHSC102833  Panicum acuminatum var. acuminatum Lowell 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. 209 Comment
  CHSC75573  Panicum acuminatum var. acuminatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada. Slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  CAS-BOT-BC253703  Panicum capillare Lowell Ahart 1981-8-15 3042 Butte Snag Lake, about 3 miles S of Jonesville 1524 Comment
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  CHSC4359  Panicum capillare R. L. Smith 1966-5-28 7 Butte US Plant Introduction Station 5 mi sw of Chico. Comment
  CHSC34020  Panicum rigidulum subsp. rigidulum L. Ahart 1981-7-18 2943 Butte Along the edge of a ditch in the burrow area ca. 5.5 m sw of Oroville. On edge of the ditch on the w side of the burrow area and ca. in the middle. 35 Comment
  CHSC6595  Papaver somniferum G. Nielson 1968-4-20 Butte Growing at 5th st. and Salem, Chico. 59 Comment
  CHSC108989  Parentucellia viscosa Lowell Ahart 2012-4-30 19942 Butte Depression along the side of the Guardian Trail, about 1/4 mile west of Highway 32, about 8-1/4 miles northeast of Chico, south part of Upper Bidwell Park. 382 Comment
  CHSC78170  Parentucellia viscosa Lowell Ahart 2000-5-17 8367 Butte On the south margin of the Thermalito Afterbay, north of the poor dirt road, just west of the Cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. 42 Comment
  JEPS120936  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CDA6399  Parentucellia viscosa L. Ahart 2000-5-23 8385 Butte Northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CHSC5943  Parthenocissus tricuspidata var. veitchi M. MacArthur 1968-6-17 187 Butte On NW wall of Life Science bld., Chico State College campus. 60 Comment
  SEINET7040266  Parvisedum pentandrum A. G. Vestal 1963-5-9 s.n. Butte Ca 14.2 miles southeast of Chico. Nelson Quadrangle UTM Zone 10, 598465mE, 4375546mM. Comment
  UCD88740  Paspalum dilatatum J. Jones 1923-9-15 s.n. Butte Biggs Rice Station. Comment
  CHSC64076  Paulownia tomentosa B. Castro 1989-4-11 308 Butte On corner of 7th and Flume Streets at the edge of downtown Chico. Comment
  CHSC34221  Paxistima myrsinites M. S. Taylor 1981-5-29 3811 Butte Vicinity of old mining claim ca bin, Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  CHSC37125  Paxistima myrsinites L. Ahart 1982-9-13 3827 Butte Along edge of dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC101138  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 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
  CHSC24781  Pedicularis densiflora D. E. Hale 1976-4-10 14 Butte On e side of Vilas Rd - Ponderosa Rd intersection, ca. 1.2 km e from Vilas Rd - Cohasset Hwy intersection. 830 Comment
  CHSC102398  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC28987  Pellaea mucronata M. S. Taylor 1980-3-19 2391 Butte Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  SEINET10872478  Pellaea mucronata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4115 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET10931288  Penstemon azureus subsp. angustissimus Mary Susan Taylor 1981-5-11 Taylor 3688 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  SEINET3160230  Penstemon breviflorus L. S. Rose 1940-5-30 40425 Butte Feather River Canyon, 25 mi NE of Oroville 610 Comment
  CHSC1850  Penstemon breviflorus subsp. glabrisepalus V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  RSA780097  Penstemon breviflorus subsp. glabrisepalus C. C. Bruce 1898-06 2414 Butte [No location information provided.] Comment
  UC436310  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  CHSC11886  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville. 1950 Comment
  CHSC27966  Penstemon gracilentus M. S. Taylor 1978-7-19 1780 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of tis jct with Scotts John Rd, ca. 6 mi ne of Jonesville. 1889 Comment
  CHSC37781  Penstemon laetus var. leptosepalus M. S. Taylor 1982-6-24 4729 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  RSA4119  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  CHSC30081  Penstemon neotericus M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3204 Butte Humboldt Peak on w side of trail. 2154 Comment
  UC1560380  Penstemon newberryi var. newberryi E. Joyal and D. Mehlman 1988-7-3 1310 Butte Humboldt summit, E side Lsassen National Forest 2100 Comment
  CAS-BOT-BC245634  Penstemon personatus M. S. Taylor 1982-8-16 4998 Butte Along road from Bald Mt. to High Rock Ravine , ca. 4 air mi NE of Stirling City 1737 Comment
  UC1527283  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte about 1/2 mi sw Bald Mountain (about 4 1/2 mi ne of Stirling City); sw of Bald Mountain, ne of Stirling City 1615 Comment
  NY651299  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 689 Butte Jonesville. On gravel bars by Butte Creek. 1500 Comment
  CHSC10590  Pentagramma pallida Lowell Ahart 1966-2-20 Butte Sam's Ranch, Honcut. 60 Comment
  CHSC3982  Pentagramma triangularis E. P. Parreno 1967-2-20 Butte Salmon Hole. Comment
  JEPS113228  Pentagramma triangularis Lowell Ahart 2007-5-22 13918 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  JEPS113226  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  UC1562390  Perideridia howellii Vernon Oswald and Lowell Ahart 1990-7-31 4420 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow, 1097 Comment
  CDA14077  Perideridia lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13960 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC38743  Perideridia oregana Vernon Oswald 1983-6-9 655 Butte Upper Bidwell Park, Chico, near Yahi Trail 1400 ft e of Salmon Hole Parking Area. 170 Comment
  JEPS115269  Perideridia oregana Lowell Ahart 2009-6-30 15957 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC40238  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 b Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd. at the W. Branch of the Feather R. 1615 Comment
  CHSC48661  Persicaria amphibia Vernon Oswald 1987-7-4 3091 Butte Rancho Aquas Frias. 7-Mile Lane, 2.8 mi s of Dayton-Ord Hwy, between Chico and Butte City. Growing in a dry roadside ditch. 33 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
  SBBG120023  Persicaria lapathifolia L. Ahart 2006-9-11 13289 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  CHSC31170  Persicaria maculosa M. S. Taylor 1978-9-8 1883 Butte Along flood control slough, ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CAS-BOT-BC419182  Persicaria maculosa John Thomas Howell 1959-9-20 34617 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC419322  Persicaria punctata John Thomas Howell 1959-9-20 34664 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC419321  Persicaria punctata A. A. Heller 1914-7-15 11578 Butte Hills 8 miles north of Oroville 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
  CHSC75265  Petrorhagia dubia Jennifer Slater 1997-4-20 26 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx 10 miles north of Chico. 67 Comment
  HSC46448  Petrorhagia dubia J. P. Smith, J. O. Sawyer 1973-4-14 6064 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  CHSC33711  Phacelia corymbosa J. D. Jokerst 1981-5-21 1327 Butte Pulga Rd., ca 1/10 mi NE of its junction with Hwy 70. Comment
  CHSC27787  Phacelia egena Michael Snider 1978-4-8 19 Butte Ca 120 ft s of Rock Creek. 213 Comment
  CHSC38466  Phacelia egena Vernon Oswald 1983-3-31 242 Butte Upper Bidwell Park, Chico, near Yahi Trail ca. 500 ft w of Parking Area N (1.3 mi e of the power lines) at Salmon Hole. 146 Comment
  SEINET12326938  Phacelia heterophylla Unknown 1980-1 18 Butte ca .75 mi E of Oroville Quincy Highway, 10 ft S of Lumpkin Rd 402 Comment
  JEPS50779  Phacelia heterophylla subsp. virgata Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9283 Butte immediately w of Arch Rock Tunnel (along Feather River Highway); Feather River Highway 487 Comment
  POM181498  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville. 1524 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
  CAS-BOT-BC134035  Phacelia ramosissima var. ramosissima Charles Piper Smith 1914-7-2 2905 Butte Chico Creek foothills Comment
  UC65193  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  CAS-BOT-BC259043  Phalaris lemmonii Lowell Ahart 1984-5-10 4600 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC2173  Phalaris paradoxa D. Bower 1953-8-27 Butte 1A Llano Seco. 30 Comment
  SBBG128084  Philadelphus lewisii L. Ahart 2009-5-23 15723 Butte S side of Ten Mi House Rd, Upper Bidwell Park, ca. 0.5 mi SW of the intersection of Hwy 32 and Ten Mi House Rd, ca. 10 mi NE of Chico 311 Comment
  CAS-BOT-BC250864  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  CHSC35092  Phlox diffusa R. A. Schlising; R. Banchero, J. Fuller, M. Merryman 1981-6-20 4100 Butte NE part of county, E of Inskip and E of Jones Meadow. 1856 Comment
  CHSC93966  Phlox diffusa R. D. Fischer 2004-6-20 748 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Roadside. 1417 Comment
  CHSC1307  Phlox speciosa subsp. occidentalis P. Delaplane 1965-5-4 56 Butte Found on so. side of Concow Rd. South side of Lake Concow. 914 Comment
  JEPS114181  Phlox speciosa subsp. occidentalis L. P. Janeway 2007-5-6 8969 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. Comment
  CAS-BOT-BC134920  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia Comment
  JEPS127077  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yards north of the intersection of Smullin Road and Ahart Road east side of Honcut, about 13 miles south of Oroville. Comment
  CAS-BOT-BC141250  Phoradendron serotinum subsp. tomentosum John Thomas Howell 1978-7-26 53191 Butte Open crest in volcanic agglomerate, E of Nevada City on Highway 20 at junction of road to Washington. Sierra Nevada 1310 Comment
  CHSC31425  Phoradendron villosum L. Ahart 1980-9-10 2624 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  RSA30417  Phoradendron villosum A. A. Heller 1914-1-28 11157 Butte Near Hog Springs, 6 miles E of Chico. Comment
  CHSC38724  Physalis lancifolia Vernon Oswald 1983-8-26 1027 Butte Upper Bidwell Park, Chico, in Lindo Channel at Five Mile Recreation Area. 85 Comment
  CHSC51930  Physalis lancifolia L. P. Janeway 1986-9-20 1887 Butte Inside the bend at the jct of Chico-Butte City Hwy and Road 48. 28 Comment
  CHSC35299  Physocarpus capitatus Robert A. Schlising; Coleta Lawler 1981-8-8 4192 Butte Concow Reservoir E of Paradise. At roadside. Comment
  CHSC102989  Phytolacca americana Lowell Ahart 2009-8-13 16280 Butte West end of a picnic area, on the north side of the channel, about 140 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, about 40 yards northwest of Big Chico Creek, Upper Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC76937  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC29003  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte Just e of Chico. Ne corner of jct of Notre Dam Blvd and the Skyway, ca 1/8 mi of Hwy 99. 68 Comment
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC11775  Pinus monticola E. B. Copeland 1929-7-17 331 Butte Above Jonesville. 2000 Comment
  CHSC3267  Pinus nigra M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CAS-BOT-BC79017  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  UC600637  Piperia colemanii H. F. Copeland 1932-7-23 Butte above Jonesville hotel; Jonesville 1600 Comment
  JEPS95141  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Clear Creek, s of the hay barn, Butte Junior College Clear Creek; , Butte Junior College 76 Comment
  CDA43080  Pistacia chinensis L. P. Janeway 2011-9-12 10724 Butte Sacramento Valley.; North face of the levee on the south side of the Feather River about 250 m east of Centennial Park, Oroville. Comment
  SEINET10529822  Pityrogramma triangularis Mary Susan Taylor 1980-3-8 Taylor 2369 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  JEPS124179  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. 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
  CHSC28989  Plagiobothrys canescens J. D. Jokerst 1979-4-28 206 Butte Adjacent to Rock Cr, 150 mets. N.W. of southern most intersection of Rock Cr. Rd. and Cohasset Hwy. 121 Comment
  UC726654  Plagiobothrys fulvus A. A. Heller 1938-4-23 15044 Butte on Feather River Hwy 1 1/2 mi from Oroville Comment
  CHSC103738  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-5-16 16688 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  UCD169853  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 2010-6-9 16785 Butte About 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles(air) northeast of Oroville. About 100 yards west of the fence. 398 Comment
  CAS-BOT-BC228253  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 Comment
  CHSC29034  Plagiobothrys nothofulvus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 547 Butte Top of North Table Mt, 200 m N of Cherokee Rd where it intersects the E end of the Mt. Comment
  CHSC39213  Plagiobothrys nothofulvus M. S. Taylor; K. Tarp 1983-3-12 5239 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC3933  Plagiobothrys nothofulvus L. R. Alexander 1967-4-6 30 Butte Ca. 200 yds. s of East Lassen Ave., Cohasset road intersection on the right hand side of Cohasset road. 59 Comment
  CHSC54361  Plagiobothrys nothofulvus M. Bailey 1991-3-30 558 Butte Butte College campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  POM71479  Plagiobothrys nothofulvus C. C. Bruce 1897-05 1929 Butte Chico. Comment
  SBBG40484  Plagiobothrys nothofulvus J. Ingram 1960-4-6 508 Butte below Pentz Rd, ca. 1 mi N of jct with Nelson Bar Rd, S of Paradise Comment
  UCD80166  Plagiobothrys nothofulvus CNPS SN Foothill Team 2005-4-6 SNFN 0099 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, Oroville. Stand on mesa NW of parking area, approximately 1 mile; 123 degrees east of south fork of Coal Canyon, extends to west and north of releve location. 383 Comment
  SEINET10497610  Plagiobothrys scriptus Lowell Ahart 1983-4-10 Ahart 3918 Butte Ca. l mi ne of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC35065  Plagiobothrys shastensis R. A. Schlising; R. Banchero 1981-5-20 4055 Butte E of Oroville on Forbestown Road, just S of Lake Wyandotte. Comment
  CHSC31250  Plagiobothrys stipitatus Jeffrey D. Prouty 1979-4-18 213 Butte H. Wurlitzer Ranch, ca 10 mi N of Chico. In pasture and along roadside ca 500 m N of Singer Creek, E side of Cana-Pine Creek Road. 57 Comment
  CHSC104803  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte On Damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. 398 Comment
  CHSC46346  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1989-5-28 6290 Butte Near the edge of a large meadow, in a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point. 335 Comment
  SBBG128017  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte W side of the old Humboldt Rd, Disc Golf Area, ca. 150 yards N of the entrance to the Disc Golf Area, ca. 40 yards W of Hwy 32, upper Bidwell Park, ca. 5 mi (air) NE of Chico 395 Comment
  SEINET7072732  Plagiobothrys stipitatus var. micranthus A. G. Vestal 1963-5-9 s.n. Butte North of Oroville on Alternate Route 40 (Route 70). UTM Zone 10, 621508mE, 4387718mN. Coordinate datum: NAD 27.) Comment
  UCD80160  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-3-31 SNFN 0073 e Butte CDFG North Table Mountain Wildlife Area, located in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  CHSC33702  Plantago bigelovii L. Ahart 1981-4-6 2745 Butte A little SE of Graylodge Waterfowl Mgmt Area HQ, ca. 8 mi swof Gridley. 35 Comment
  SEINET10499843  Plantago bigelovii Mary Susan Taylor 1976-3-23 Taylor 1031 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  JEPS117515  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC62364  Plantago elongata B. Castro 1990-3-31 418 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House. 297 Comment
  CHSC20045  Plantago erecta M. S. Taylor 1975-4-25 500 Butte Along dirt road, ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC24896  Plantago erecta G. K. Mead 1976-4-23 14 Butte Ca. 150 yds S of Butte Creek and 2.0 mi W of the Covered Bridge. 6.4 mi ESE of Chico. 121 Comment
  CHSC34412  Plantago erecta R. M. Winchell 1980-4-17 1 Butte Covered Bridge along Butte Creek. Comment
  CHSC75389  Plantago erecta Jennifer Slater 1997-4-12 15 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  UC195481  Plantago erecta A. A. Heller 1914-3-21 11221 Butte 8 mi n Oroville Comment
  UCD22636  Plantago hookeriana var. californica Joseph Laferriere 1982-4-18 6 Butte 3 miles south of Oroville on Hwy 70, roadside hilltop 1/4 mile south of jet Baggett-Marysville Rd. 65 Comment
  JEPS108965  Plantago lanceolata Lowell Ahart 2006-9-13 13321 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 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
  CHSC113501  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC93988  Platanthera leucostachys R. D. Fischer 2004-6-20 784 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Above pond area and around upper stream edges. 1371 Comment
  UC1594590  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  SEINET13710512  Platanthera sparsiflora Lowell William Ahart, Lowell William Ahart, Peter L. Ahart 1984-1 4757 Butte 5 Mi. NE Stirling City, 0.5 Mi. E Bald Mtn, 1750 M 1750 Comment
  UCD80810  Plectritis ciliosa CNPS SN Foothill Team 2005-3-22 SNFN 0063 c Butte CDPR, Oroville State Recreation Area, just south of a state park utility road out to water tanks; this road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  CAS-BOT-BC458151  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft. W of Old Humboldt Rd. 2011 Comment
  CAS-BOT-BC244402  Poa annua Javier Penalosa 1962-6-18 2462 A Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC23132  Poa annua M. S. Taylor 1975-4-6 431 Butte In lawn, ne corner of Arcadian and W. 4th Ave, Chico. 30 Comment
  CHSC38842  Poa annua Vernon Oswald 1983-2-14 75 Butte Upper Bidwell Park, Chico, in Parking Area K at Bare Hole (1 mi e of the power lines). 109 Comment
  CHSC88148  Poa bolanderi Lowell Ahart 2004-7-23 11305 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CHSC89036  Poa bulbosa A. Peterson 2003-3-25 10 Butte East of Chico, Humboldt Rd., along road edge. 152 Comment
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  CHSC28857  Poa secunda subsp. secunda J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 459 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC59849  Poa secunda subsp. secunda Michael Snider 1978-4-12 13 Butte Ca. 140 ft s of Rock Creek. 213 Comment
  CHSC59850  Poa secunda subsp. secunda R. E. Preston 1982-3-6 187 Butte At boundary of Upper Bidwell Park, n of Horseshoe Lake, Chico. 188 Comment
  HSC39887  Poa secunda subsp. secunda J. P. Smith 1973-3-22 5932 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  JEPS108566  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage 1478 Comment
  JEPS117265  Pogogyne zizyphoroides Lowell Ahart 2010-5-14 16646 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CHSC101687  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 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
  CHSC27986  Polygala cornuta M. S. Taylor 1978-7-18 1692 Butte On n side of Old Humboldt Rd, ca. 2 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC32101  Polygala cornuta L. Ahart 1974-8-3 583 Butte At Merry Mountain Village. 914 Comment
  CAS-BOT-BC6544  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  CHSC38607  Polygala cornuta var. cornuta Vernon Oswald 1983-6-3 633 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC28155  Polygonum bidwelliae J. D. Jokerst; Jim Nelson 1979-5-21 250 Butte Abundant on thin soils atop the upper rim rock (Tuscan lava) of nw side of Little Chico Creek Canyon. Fifty yrds se of Hwy 32, 10 mi, n of Chico. 457 Comment
  SBBG61484  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Neale grade on rd from Chico to Paradise Comment
  UC726648  Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte 5 mi e Chico (just back of rifle range, opposite golf links) Comment
  POM144885  Polygonum convolvulus Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  UCR66556  Polygonum davisiae H. F. Copeland 1928-8-29 0345 Butte Northern Sierra Nevada Mtns., neighborhood of Jonesville, summit of Humboldt Road 2134 Comment
  SD1176  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville, on ground wet in spring 1500 Comment
  CHSC45100  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-9-4 6182 Butte On the bank of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  UC1101175  Polygonum hydropiperoides Herbert L. Mason and Verne Grant 1946-8-14 13027 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CHSC100914  Polygonum minimum R. A. Schlising; Lawrence Janeway 1988-7-22 4624 Butte North of Philbrook Lake, near Plumas County line. 1935 Comment
  CHSC40783  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 975 Comment
  JEPS87372  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC24813  Polygonum persicaria E. L. Rilla 1976-9-18 31 Butte .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  CDA22837  Polygonum phytolaccifolium T. C. Fuller 1962-7-12 9179 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  POM219111  Polygonum phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville. 1500 Comment
  CHSC44227  Polygonum polygaloides subsp. kelloggii V. Oswald; L. Ahart 1988-7-13 3585 Butte Road to High Lakes e of Philbrook Reservoir. In a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  UC392191  Polygonum polygaloides subsp. kelloggii E. B. Copeland 1929-7-29 Butte above Jonesville (by lily pond) 1750 Comment
  UCR188565  Polygonum punctatum George K. Helmkamp, E. A. Helmkamp 2007-10-7 13069 Butte Northern Sacramento Valley, East Gridley Road at the west edge of the Feather River bridge 27 Comment
  SEINET10479686  Polygonum spergulariiforme Mary Susan Taylor 1980-9-19 Taylor 3338 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  CAS-BOT-BC71865  Polypodium californicum Lowell Ahart 1983-4-1 3917 Butte along old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap 350 Comment
  POM22456  Polypodium californicum E. B. Copeland 1902-12-29 2749 Butte Chico Canyon Comment
  CHSC108841  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the north side of a large rock, on the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 189 Comment
  CHSC3273  Polypodium calirhiza M. L. Hillier 1966-3-7 Butte 100 to 300 yds. S. of covered bridge over Butte Creek about 9 miles from C. S. C. on Humbug rd. Comment
  CDA14059  Polypodium glycyrrhiza G. F. Hrusa, T. D. Wilfred 1997-5-1 13706 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC73552  Polypogon australis B. Castro; L. Gehrung 1995-7-26 595 Butte Pinkard Mdw. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In meadow E of road. 1143 Comment
  UC204879  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 mi n Oroville Comment
  CHSC111141  Polypogon interruptus Lowell Ahart 2012-6-21 18214 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  SEINET10507585  Polypogon maritimus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4052 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC4297  Polypogon monspeliensis R. Jaegel 1966-5-15 7 Butte In upper Bidwell Park at the drainage of the Golf Coarse Lake. Comment
  CHSC28907  Polystichum imbricans M. S. Taylor 1979-5-4 1987 Butte Millsap Bar Campground, ca. 9 mi ne of jct of Millsap Bar Rd and Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  SEINET10530116  Polystichum imbricans Mary Susan Taylor 1979-5-4 Taylor 1987 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CHSC77411  Polystichum imbricans subsp. imbricans Laura Bogni 1997-4-5 32 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 640 Comment
  JEPS124285  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-24 20584 Butte About 3 miles (air) north of De Sabla Reservoir. Comment
  CHSC28380  Polystichum kruckebergii Robert A. Schlising; Marc P. Hayes 1978-6-24 3292 Butte Extreme NW Butte County, just below summit of Humboldt Peak above Jonesville. 2133 Comment
  SD234000  Polystichum munitum Virginia Pinkus Ryder 1965-4-4 400 Butte Megalia, Feather River. 701 Comment
  CHSC44608  Polystichum scopulinum Vernon Oswald; Lowell Ahart 1987-8-5 3189 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  POM107428  Populus fremontii subsp. fremontii C. C. Bruce 1897-05 1791 Butte Little Chico. Comment
  UC600407  Populus tremuloides H. F. Copeland 1930-7-26 Butte Jonesville 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
  UC1099872  Potamogeton foliosus Herbert L. Mason, Verne Grant 1945-7-10 12638 Butte Sandford Slough, sw corner of Butte County Sandford Slough Comment
  RSA4631  Potamogeton illinoensis E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  CHSC46627  Potamogeton pectinatus Vernon H. Oswald 1988-8-5 3619 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). Pond. 85 Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  CHSC45583  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2041 Butte Near PG and E ditch ca 3/4 mi north of DaSAbla Res. at crossing of rd to Forks of Butte (Doe Mill Rd). 853 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
  CAS-BOT-BC539448  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  POM219382  Potentilla millefolia H. F. Copeland 1535 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CHSC52221  Prunella vulgaris var. lanceolata L. P. Janeway 1987-8-4 2415 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 Comment
  CHSC62115  Prunella vulgaris var. lanceolata L. P. Janeway 1993-6-23 4404 Butte Plumas National Forest. Along Rd 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CAS-BOT-BC159925  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville Comment
  CHSC26698  Prunus emarginata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1474 Butte On s side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  SD2306  Prunus emarginata E. B. Copeland 1931-7-28 Butte On ridge west of North Willow Creek, in chaparral. Jonesville 1650 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
  JEPS118066  Pseudognaphalium californicum Lowell Ahart 2011-8-17 17630 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 239 Comment
  JEPS108883  Pseudognaphalium luteoalbum Lowell Ahart 2005-12-11 12511 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  CHSC28534  Pseudognaphalium thermale M. S. Taylor 1979-10-5 2233 Butte Paradise Lake, se side, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC32753  Pseudognaphalium thermale J. D. Jokerst 1981-4-3 1283 Butte Near the top of the S side of Butte Cr. Canyon. 365 Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  SEINET10530889  Pseudotsuga menziesii Mary Susan Taylor 1976-2-22 Taylor 1000 Butte Yellow Pine Forest, ca. 2 mi N of Cohas st, ca. 10 ft E of Cohasset Hwy. 610 Comment
  CHSC60962  Psilocarphus tenellus var. tenellus Lowell Ahart 1993-7-6 7049 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC77029  Pteridium aquilinum var. pubescens D. L. Gott 1972-4-26 21 Butte E of Skyway, ca. 0.9 mi n of Stirling City turnoff and ca. 2 feet off road. 707 Comment
  CHSC2448  Pterospora andromedea R. Carter 1965-7-6 274 Butte Found along E side of Oroville-Quincy Rd., 5.2 mi. N of Mountain House, ca. 15' from road in open woods. 1219 Comment
  CHSC48672  Pterospora andromedea Vernon Oswald 1983-7-6 811 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  SEINET10454557  Pteryxia terebinthina Mary Susan Taylor 1978-7-18 Taylor 1708 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  SEINET10602442  Puccinellia pauciflora Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3940 Butte Soda Ridge Rd, 1.5 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. On the edge of a dry snow lake located over a low ridge just n of the marshy, spring-fed lake visible from the road. Comment
  CHSC31439  Pycnanthemum californicum L. Ahart 1980-7-29 2503 Butte Near a small stream near Forbestown Rd,ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  SEINET10499004  Pycnanthemum californicum Mary Susan Taylor 1975-8-31 Taylor 888 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  UC478487  Pyrola asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville 457 Comment
  SD3521  Pyrola asarifolia subsp. asarifolia E. B. Copeland 1931-7-1 670 Butte Jonesville, shady places near streams 1500 Comment
  RSA0080634  Pyrola dentata H. F. Copeland 1931-7-15 6167 Butte Jonesville. 1600 Comment
  SD3516  Pyrola picta E. B. Copeland 1931-7-15 Butte Jonesville, coniferous woods 1600 Comment
  SEINET10449176  Pyrola picta Mary Susan Taylor 1982-8-16 Taylor 4999 Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  UC1609015  Pyrola picta var. picta Lowell Ahart 1993-9-8 7159 Butte North-west 1/4 Section 3. about 1 mile east of Snow Mountain 2072 Comment
  CHSC47412  Quercus Lowell Ahart 1976-9-1 996 Butte On the west side of North Hpncut Creek, Joie Osgood Ranch, about 2 1/2 miles north and 3 miles east of Honcut. 60 Comment
  UCD169920  Quercus berberidifolia L. P. Janeway 2008-6-15 9408 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  CHSC111730  Quercus coccinea Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18224 Butte North side of paved parak road, north of South Park Drive, east of Caper Acres Playground, about 150 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC28520  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte At Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. .8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  RSA754366  Quercus kelloggii L. Ahart 2009-6-3 15812 Butte 150 yards SW of Ten Mile House Road, Upper Bidwell park, about 1/2 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CAS-BOT-BC61579  Quercus lobata C. Hart Merriam 1919-11-21 s.n. Butte Chico Comment
  CHSC48694  Ranunculus alismifolius var. alismellus Vernon Oswald 1984-6-11 1281 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. Edge of meadow. 1414 Comment
  CHSC65427  Ranunculus alismifolius var. hartwegii Vernon Oswald 1984-5-9 1179 Butte Near the covered spring at Chico Meadows ca. 1 mi n of Butte Meadows. In a meadow. 1292 Comment
  POM150530  Ranunculus aquatilis var. capillaceus E. B. Copeland 1903-5-30 3276 Butte Chico. Comment
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Jan 23 2011
  JEPS103494  Ranunculus bonariensis var. trisepalus Lowell Ahart 2002-4-24 9529 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC52789  Ranunculus canus Vernon Oswald 1983-2-9 65 Butte Upper Bidwell Park, Chico, on the north slope n-w of Horseshoe Lake. 115 Comment
  CDA34237  Ranunculus hebecarpus L. Ahart 2009-4-22 15592 Butte Along the Guardian s Trail, about 100 yards north 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
  CHSC1481  Ranunculus hebecarpus M. Roberson 1956-2-5 Butte SW Paradise, along Skyway. 426 Comment
  CHSC32725  Ranunculus hebecarpus M. S. Taylor 1981-4-8 3492 Butte Rd embankment at end of Dark Canyon Rd, around the turnout near the restroom, up from the boat ramp to the West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CHSC1487  Ranunculus muricatus R. Morford 1941-4-21 Butte Butte Creek. 121 Comment
  CDA14071  Ranunculus occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-1 13718 Butte Sierra Nevada; NE side of upper end of Paradise Lake above Magalia. Comment
  CHSC39325  Ranunculus occidentalis var. occidentalis Lowell Ahart 1983-6-26 4155 Butte Found along Ponderosa Way, about 2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 600 Comment
  CHSC41521  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-27 358 Butte N part of county, n of Philbrook Reservoir, at Coon Hollow. Near jeep trail. 1706 Comment
  POM219014  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville. 1550 Comment
  CHSC65207  Ranunculus pusillus Lowell Ahart 1995-5-26 7573 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  HSC93187  Ranunculus pusillus L. Ahart 1995-5-26 7573 Butte Peter Ahart Ranch, 2 mi. N and 0.25 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS117918  Ranunculus uncinatus var. parviflorus L. P. Janeway 2008-6-22 9433 Butte Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  CHSC21252  Raphanus raphanistrum M. S. Taylor 1975-3-25 422 Butte In fields between 11th and 12th Ave, at end of Citrus Ave, Chico. 60 Comment
  CAS-BOT-BC74264  Raphanus sativus A. A. Heller 1923-10-13 13828 a Butte Along the highway near Richvale. Comment
  SEINET13946291 Image available Rhamnus californica A. A. Heller 1915-1 11882 Butte Canyon of Chico creek 5 miles east of Chico Comment
  CHSC75529  Rhamnus crocea G. F. Hrusa; T. D. Wilfred 1997-5-8 13743 Butte Uncommon on serpentine slope facing E above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. 740 Comment
  CAS-BOT-BC59883  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra Foothills. Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  JEPS95615  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3 1/2 mi SW of Forbestown (S of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  JEPS103463  Rhamnus tomentella subsp. tomentella Lowell Ahart 2002-6-2 9676 Butte West of a small open dry meadow, SW of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  RSA107816  Rhamnus tomentella subsp. tomentella L. S. Rose 55097 Butte Magalia 732 Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 Comment
  JEPS98684  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
  SD2126  Ribes californicum E. B. Copeland 1931-7-31 Butte Woods near Butte Creek Comment
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Jul 22 2018
  SBBG28495  Ribes inerme E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  CAS-BOT-BC169092  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CHSC26784  Ribes nevadense M. S. Taylor 1978-5-6 1626 Butte E side of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  SBBG29145  Ribes nevadense E. B. Copeland 1931-7-31 Butte near Butte Crk, Jonesville 1550 Comment
  RSA0022849  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Jonesville, near Butte Creek. 1550 Comment
  RSA0022850  Ribes nevadense H. F. Copeland 1928-8-18 217 Butte Neighborhood of Jonesville. 1524 Comment
  SBBG17303  Ribes roezlii M. Vincent 1962-4-15 183 Butte 1 mi S of Stirling City on the Skyway Comment
  UC600617 Image available Ribes viscosissimum H. F. Copeland 1931-6-11 Butte Kirby Meadows Jonesville Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  CDA39482  Romulea rosea var. australis Rod Lacey 2005-3-28 s.n. Butte Thermalito; 2 blocks north of Hwy 162, between 10th Street and 12th Street. Ruderal Valley Grassland Comment
  CAS-BOT-BC74457  Rorippa curvisiliqua Lowell Ahart 1979-9-8 s.n. Butte California Rice Experiment Station. 33 Comment
  JEPS95951  Rorippa palustris var. hispida Lowell Ahart 1999-8-13 8182 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
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Feb 25 2009
  CHSC35645  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 229 Butte Western Canal, at jct with the Midway ca. 0.75 mi s of Nelson. 35 Comment
  CHSC65429  Rosa bridgesii Vernon Oswald 1984-5-28 1211 Butte Cohasset Rd., 1.3 mi n of the end of the pavement. 1005 Comment
  JEPS103255  Rosa eglanteria Lowell Ahart 2002-9-8 9933 Butte 1 3/4 mi N by road from town of Feather Falls (W side of paved road, 1/4 mi S of the first parking spaces at the Feather Falls Trailhead) 854 Comment
  SEINET10597110  Rostraria cristata A. Arthur Heller 1902-5-13 Heller 5534 Butte Grade between Clear Creek and Paradise. Comment
  UC1191575  Rotala ramosior Herbert L. Mason, Verne Grant 1946-8-15 13048 Butte Butte Sink, Greylodge Game Refuge, #833 Irrigation Ditch, near caretakers house Butte Sink; , Greylodge Game Refuge, #833 Irrigation Ditch Comment
  CHSC31793  Rubus armeniacus L. Ahart 1976-5-21 1116 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52472  Rubus armeniacus L. P. Janeway 1987-5-20 2061 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Creek bottom. 457 Comment
  SEINET10483860  Rubus armeniacus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4716 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC148349  Rubus laciniatus Lowell Ahart 1984-6-10 4696 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  CHSC45815  Rubus laciniatus L. P. Janeway 1987-5-20 2060 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Cr bottom. 457 Comment
  CHSC23700  Rubus parviflorus M. S. Taylor 1976-5-5 1112 Butte Along creek, ca. 5 ft s of Hwy 70, ca. 20 me ne of Oroville. Comment
  JEPS29839  Rubus praecox Rimo Bacigalupi and L. R. Heckard 1962-6-1 8583 Butte along road to Centerville about 200 feet e of its inception at the Paradise Road junction; along road to Centerville 60 Comment
  UCD166762  Rubus praecox Marcel Rejmanek 2016-10-6 2162 e Butte By Richvale East Rd, right before the intersection with Highway 99. Comment
  JEPS115605  Rubus ursinus Lowell Ahart 2009-5-23 15736 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CAS-BOT-BC421908  Rumex acetosella Lowell Ahart 1987-6-9 5742 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
  CHSC103944  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC34787  Rumex salicifolius var. denticulatus L. Ahart 1981-9-26 3204 Butte On gravel bar along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  UC726091  Rumex salicifolius var. triangulivalvis A. A. Heller 1928-7-25 14702 Butte Butte Creek House Jonesville Comment
  UC1594709  Rumex stenophyllus Lowell Ahart 1992-5-23 6777 Butte about 0.5 mi s Butte City Highway (on the w side of Goodspeed Watt Road) 30 Comment
  SD122531  Rumex triangulivalvis var. oreolapathum Lowell Ahart 1984-6-8 4675 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown 145 Comment
  SEINET10530982  Sabina californica A. Arthur Heller 1939-12-10 Heller 15486 Butte Neal Road 3 km above the junction with the Oroville road. 150 Comment
  JEPS118328  Sagina apetala Lowell Ahart 2011-4-28 17331 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC98805  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 238 Comment
  CHSC33283  Sagina saginoides R. A. Schlising 1981-6-29 4123 Butte E of Inskip at Ramsey Bar of Little Kimshew Creek. 1341 Comment
  CAS-BOT-BC445663  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville 1700 Comment
  CAS-BOT-BC445725  Sagittaria latifolia Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  POM219074  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville. Kirby's Meadow. 1750 Comment
  LA208686  Salix exigua var. hindsiana A. A. Heller; 1914-5-13 11397 Butte near Butte Creek on the road between Durham and Nelson Comment
  SD926  Salix geyeriana E. B. Copeland 1931-6-10 Butte Jonesville, in meadows by Butte Creek 1500 Comment
  LA208653  Salix gooddingii A. A. Heller; 1914-4-6 11262 Butte Chico-Oroville rd 12 mi from Chico on the banks of Dry Creek Comment
  SBBG128179  Salix gooddingii L. Ahart 2012-4-20 17893 Butte E side of the dam, E side of S Rim Trail, ca. 50 yards SW of the table at the old homestead, ca. 100 yards S of the intsection of S Rim Trail and Ten Mi House Rd, ca. 5/8 mi W of Hwy 32, ca. 9 m NE of Chico 259 Comment
  SEINET10539215  Salix hindsiana Mary Susan Taylor 1975-10-3 Taylor 935 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
  CHSC11348  Salix laevigata Lowell Ahart 1970-3-18 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC65011  Salix laevigata Vernon Oswald 1987-3-26 2298 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. 73 Comment
  LA208680  Salix laevigata A. A. Heller; 1914-3-21 11222 Butte 8 mi N of Oroville Comment
  CHSC108852  Salix lasiolepis Lowell Ahart 2012-3-9 17772 Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CAS-BOT-BC125060  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  CHSC38670  Salix lucida subsp. lasiandra Vernon Oswald 1983-5-2 411 Butte Upper Bidwell Park, Chico, along the edge of Lindo Channel downstream from the flood-control gates. 79 Comment
  LA208870  Salix melanopsis E. B. Copeland; 1931-6-10 sn Butte by Butte Creek; Jonesville 1500.0 Comment
  SEINET10937638  Salsola kali var. tenuifolia Mary Susan Taylor 1974-10-11 Taylor 332 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  SEINET12326926  Sambucus mexicana Unknown 1978-1 16 Butte collected 2yds W of Cohasset Rd. 16.7 mi NE of Chico. Chapparal Comment
  SD4966  Sambucus racemosa E. B. Copeland 1930-7-12 Butte Above Jonesville 2100 Comment
  CHSC50544  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1990-6-20 4309 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1965 Comment
  CHSC3478  Sanicula bipinnata Roger Jaegel 1966-3-21 87 Butte Located three miles east of the Highway 99 intersection on Pentz Road. Comment
  CHSC45732  Sanicula bipinnata Troy Griffiths 1988-3-8 64 Butte N side of Cohasset Rd., ca. 4 mi ne of Chico Municipal Airport, Chico. 106 Comment
  CHSC90615  Sanicula bipinnata Chris Ottinger 1983-3-15 17 Butte Ca. 0.6 km sw of Covered Bridge, s side of Butte Creek, 10.2 km ese of Chico. 120 Comment
  HSC66267  Sanicula bipinnata M. S. Taylor 1980-3-1 2324 Butte W end of county dump on N side of Neal Rd., about 1 mi. E of Hwy. 99, about 7 mi. S of Chico 76 Comment
  JEPS43475  Sanicula bipinnatifida Joan O. Danielson 1966-4-6 26 Butte Cherokee Rd past Oregon Gulch Road 609 Comment
  SEINET12121650  Sanicula bipinnatifida L. Ahart, Ahart, P. 1984-1 4715 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  UC1006698  Sanicula crassicaulis C. Ritchie Bell 1952-4-19 3 X419 Butte 3.8 mi ne of Berry Creek (in (an old home site)) Comment
  POM219522  Sanicula graveolens E. B. Copeland 1931-6-22 s.n. Butte Jonesville, on ridge west of Jones Creek. 2100 Comment
  CHSC42671  Sanicula tuberosa Vernon Oswald 1985-1-24 1680 Butte Upper Bidwell Park, Chico, on the north rim just e of the head of the west intermittent stream flowing into Sycamore Creek. 304 Comment
  POM219371  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Near Jones Creek Comment
  UC1212528  Saxifraga aprica H. F. Copeland 1933-6-25 Butte vicinity of Jonesville (along Butte Creek Meadow); Lassen National Forest, Butte Creek Meadow Comment
  SEINET10483042  Saxifraga californica Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5235 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  NY186188  Saxifraga gracillima A. A. Heller 1914-3-19 11214 Butte Canyon of Big Chico creek Comment
  UC1602227  Saxifraga oregana H. F. Copeland 1920-7-12 358 Butte Jonesville Comment
  SEINET10472665  Schoenolirion album Mary Susan Taylor 1977-8-17 Taylor 1465 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CAS-BOT-BC111369  Schoenoplectus acutus var. occidentalis John Thomas Howell 1959-9-20 34651 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  CHSC38912  Schoenoplectus acutus var. occidentalis Vernon Oswald 1983-5-23 540 Butte Upper Bidwell Park, Chico, between the turn-around at the end of Upper Park Rd. and the east boundary of the park. 207 Comment
  CHSC4413  Schoenoplectus acutus var. occidentalis J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park. Chico. Comment
  CHSC45123  Schoenoplectus tabernaemontani Vernon Oswald 1988-8-15 3689 Butte South side of a small pond in the Oroville Wildlife Area on the west side of the Feather River slightly north of the level of Cherry Ave. 32 Comment
  UC1100776  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-7 12993 Butte Gridley Road n Butte Sink (Big Pond near river, Grey Lodge Game Refuge); Grey Lodge Game Refuge, n of Butte Sink Comment
  SEINET10467323  Scirpus carinatus Mary Susan Taylor 1981-5-6 Taylor 3622 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
  CHSC56800  Scirpus congdonii L. P. Janeway 1986-9-1 1831 Butte Near wet meadow and willows at east end of Philbrook Reservoir. 1691 Comment
  UC1100919  Scirpus maritimus Herbert L. Mason, Verne Grant 1946-8-15 13046 Butte Greylodge Game Refuge near caretaker's house; Butte Sink, Greylodge Game Refuge Comment
  JEPS104047  Scirpus setaceus Lowell Ahart 2003-6-30 10337 Butte In the gutter on the n side of Fields Ridge Rd, n of the Ponderosa Reservoir, ca 3 mi (air) n of Forbestown. 491 Comment
  CHSC90633  Scleranthus annuus subsp. annuus Lowell Ahart 2005-4-2 11687 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
  CHSC33234  Sclerolinon digynum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3785 Butte Meadow 0.1 mi s of Butte Meadows junct of Skyway and Humboldt Road. 1341 Comment
  CHSC1900  Scrophularia californica subsp. floribunda L. Oliver; D. Sloan 1935-4-20 Butte Feather River Canyon. Comment
  CHSC36517  Scutellaria californica L. Ahart 1982-5-28 3439 Butte Near Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  SEINET13947868 Image available Scutellaria siphocampyloides A. A. Heller 1927-1 14397 Butte Along Chico Creek E of Chico Comment
  SEINET10499231  Scutellaria tuberosa Mary Susan Taylor 1979-5-4 Taylor 1995 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CAS-BOT-BC415025  Sedella pumila A. A. Heller 1914-4-27 11329 Butte Along the Chico-Oroville road on the lava plains 6 miles from 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
  CHSC87435  Sedella pumila R. D. Fischer 2004-3-28 98 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail. Located approx. 0.5 mile south of Pine Trail junction near drainage. 396 Comment
  CHSC90604  Sedella pumila M. J. Luesebrink 1978-4-12 16 Butte Ca. 300 ft. s of Butte Creek, ca. .25 mi sw of Covered Bridge, n of Humbug Rd., 4.4 mi ne of junction with Skyway Rd., 5.7 mi ese of Chico. 91 Comment
  HSC92528  Sedella pumila Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 30 Butte On N Table Mtn., S of Paradise on Cherokee Rd., S end of Table Mtn. proper 381 Comment
  RSA0081476  Sedum spathulifolium I. L. Wiggins, Dorothy Wiggins 1961-6-10 16313 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  RSA0081478  Sedum spathulifolium C. C. Bruce 1897-05 1778 Butte Butte Creek. Comment
  CAS-BOT-BC62122  Selaginella hansenii L. P. Janeway 1994-10-23 4759 Butte Brush Creek quad, lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River 441 Comment
  CHSC21  Selaginella hansenii J. Cowan 1943-3-22 Butte Salmon Hole. 243 Comment
  CHSC28875  Selaginella hansenii J. D. Jokerst; M. S. Taylor 1980-2-14 42 Butte Along E side of Lumpkin Rd ca 200 m N of its jct with McCabe Cr. Comment
  UCD135979  Selaginella hansenii L. Ahart 1974-1-6 294 Butte Peter Ahart Ranch, Honcut; along North Honcut Creek. 45 Comment
  CAS-BOT-BC363284  Senecio aronicoides F. N. Bassett June 16. s.n. Butte Jonesville Comment
  CHSC86443  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 95 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  SEINET10904906  Senecio eurycephalus var. lewisrosei Mary Susan Taylor 1978-5-6 Taylor 1582 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC11832  Senecio integerrimus var. major E. B. Copeland 1929-7-14 498 Butte Jonesville. 1650 Comment
  CDA34189  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada; Along Bean Creek Road 0.4 km northwest of Spur Road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Comment
  CHSC30364  Senecio sylvaticus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 691 Butte Top of North Table Mt, 100 E of waterfalls of the S branch of Coal Cr. 365 Comment
  JEPS115628  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
  JEPS117239  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico 182 Comment
  CHSC94021  Senecio triangularis R. D. Fischer 2005-9-5 667 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  POM219171  Senecio triangularis H. F. Copeland 1928-8-17 251 Butte Jonesville. 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
  RSA755040  Senecio vulgaris L. Ahart 2009-5-15 15692 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CAS-BOT-BC364545  Senecio vulgaris Lowell Ahart 1980-5-4 2155 Butte Thermalito 65 Comment
  CHSC69442  Sericocarpus oregonensis Lowell Ahart 1997-9-6 7890 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  SEINET10872005  Sericocarpus oregonensis subsp. californicus Mary Susan Taylor 1980-9-12 Taylor 3328 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
  CHSC69740  Setaria pumila Lowell Ahart 1997-10-24 7936 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CAS-BOT-BC240191  Setaria viridis John Thomas Howell 1959-9-20 34679 Butte Eastern outskirts of Oroville 60 Comment
  CHSC109002  Sherardia arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte On the north side of the path,near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC116637  Sherardia arvensis Lowell Ahart 2016-4-15 20751 Butte On the west side of Swedes Flat Road, about 1/2 mile southwesst of Dutch Ravine, about 8 miles (air) southest of Oroville. 384 Comment
  UCD122005  Sherardia arvensis J. A. Sheldahl 1968-4-20 22 Butte Table Mountain, ca. 6 miles north of Oroville. Comment
  RSA702150  Sidalcea calycosa subsp. calycosa R. D. Fischer 2004-6-6 444 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trial and Pine. Comment
  CHSC100866  Sidalcea gigantea B. Castro; David Toren 2005-7-21 1520 Butte Ca 9 air mi NE of Paradise, and 2.5 mi NE of Flea Mtn, at the crossing of Lockerman Ck by USFS Rd 24N13. Ca 200 ft from W edge of ck. 950 Comment
  CHSC48612  Sidalcea gigantea Vernon Oswald 1984-7-12 1569 Butte Skyway 1.4 mi s of Inskeep. 1402 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  CHSC13729  Sidalcea hartwegii J. G. Moore 1970-4-7 147 Butte Skyway, 2 mi. w of Paradise. Comment
  CHSC45945  Sidalcea hartwegii Lowell Ahart 1978-5-16 1734 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC726097  Sidalcea oregana subsp. spicata A. A. Heller 1928-6-28 14650 Butte Butte Meadows Comment
  SEINET10480011  Sidalcea oregana subsp. spicata Mary Susan Taylor 1975-8-31 Taylor 882 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  POM225855  Silene californica J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham. Comment
  SEINET11933241  Silene californica K. L. Tarp 1981-1 Butte Bidwell Park NE of Chico, W of Big Chico Creek 219 Comment
  CHSC32372  Silene gallica J. D. Jokerst 1979-5-2 1222 Butte Top of North Table Mt., S of Cherokee Rd at the E edge of the mountain. 396 Comment
  CHSC87537  Silene gallica R. D. Fischer 2004-4-20 131 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail, north of Disk Golf Course and prior junction of Bloody Pin Trail. 274 Comment
  CHSC214  Silene laciniata subsp. californica R. M. Staley 1952-7-14 Butte Butte Creek. Comment
  CHSC39296  Silene laciniata subsp. californica Lowell Ahart 1983-7-29 4253 Butte Found along the edge of the dirt road, about 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 900 Comment
  UC120147  Silene lemmonii unknown Butte Jonesville Comment
  UC478523  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville 1550 Comment
  CHSC48264  Silene occidentalis subsp. occidentalis Vernon Oswald 1987-6-29 3039 Butte Jones Meadow Rd. e of Inskip, ca. 0.3 mi e of the intersection of the last section of road to Jones Meadow, at the East Fork of Last Chance Creek. On the n side of the creek. 1734 Comment
  CHSC81465  Silybum marianum Petra M. Lee 2000-4-30 Butte Chico. 1/2 mile NW of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  JEPS102307  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  CAS-BOT-BC74933  Sinapis arvensis J. D. Jokerst 1983-4-4 1707 Butte Ca. 330 meters south of Keefer Lane alnong the P.G.&E. powerlines. 109 Comment
  CHSC50404  Sisymbrium altissimum Vernon Oswald 1990-6-10 4287 Butte Hwy 32 at Lomo (jct. Humboldt Rd to Butte Meadows). On the west edge of the pullout on Hwy 32. 1158 Comment
  JEPS113183  Sisyrinchium bellum Lowell Ahart 2007-4-30 13706 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
  UC726206  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 2133 Comment
  SEINET10905129  Smilacina racemosa Mary Susan Taylor 1981-5-21 Taylor 3783 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  JEPS43464  Smilax californica W. L. Jepson 1939-8-17 19471 Butte near Oroville; Feather River 45 Comment
  CHSC77027  Solanum elaeagnifolium David Scofield Wilson 1996-10-8 Butte In the city of Chico: roadside at the southwest corner of Manzanita Avenue and Centennial Avenue. 82 Comment
  CHSC114961  Solanum parishii Lowell Ahart 2015-3-14 19946 Butte On the north side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  CHSC43779  Solanum rostratum Vernon Oswald 1986-7-23 2223 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Roadside on the edge of vernal pond. 48 Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC1939  Solanum umbelliferum Garnett-Durbrow 1928-3-18 Butte Iron Canyon, Chico Creek. 152 Comment
  JEPS108860  Solanum umbelliferum Lowell Ahart 2006-5-19 12633 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  RSA325175  Solanum umbelliferum M. S. Taylor, L. Ahart, J. D. Jokerst 1984-4-6 5413 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC41890  Solidago elongata Lowell Ahart 1986-8-15 5385 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CAS-BOT-BC364942  Solidago velutina subsp. californica Lowell Ahart 1988-7-24 6130 Butte About 1/20 mile north-east of the intersection of Ponderosa Way and Lower Forbestown Road, west of Sunset Hill, near Forbestown 731 Comment
  JEPS127010  Soliva sessilis Lowell Ahart 2016-5-24 20856 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  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
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCR219113  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15584 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  SEINET10594641  Sorghum halepense H. E. Brown 1896-10-9 Brown 113 Butte Near Clear Creek 53 Comment
  SEINET10452463  Spartium junceum Mary Susan Taylor 1975-4-26 Taylor 524 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC118036  Spergula arvensis subsp. arvensis Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 233 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CAS-BOT-BC390128  Spergularia bocconi Lowell Ahart 1989-5-23 6244 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  UCD99249  Spergularia marina P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  CHSC42793  Spiraea densiflora subsp. densiflora L. P. Janeway 1987-6-27 2331 Butte Along Little Kimshew Cr just N of Ramsey Bar. Site of old Ramsey Bar mining and timber center. 1341 Comment
  CHSC27193  Spiraea prunifolia P. Moyer 1972-3-2 96 Butte CSUC Campus. Lassen Hall Bridge, Citrus Ave. 60 Comment
  UC600631  Spiranthes romanzoffiana H. F. Copeland 1930-7-27 Butte Blueberry Meadow Jonesville Comment
  UC1594710  Sporobolus cryptandrus Lowell Ahart 1992-7-23 6834 Butte at intersection of Shippee Rd. and Openshaw Rd. (along edge of Oroville Chico Hwy.) 60 Comment
  CHSC43639  Stachys ajugoides var. rigida B. Castro 1987-8-25 204 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC42979  Stachys pycnantha L. P. Janeway 1987-6-5 2129 Butte Along OroQuincy Hwy just S of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC806  Stachys pycnantha E. Walker 1932-7-26 Butte Magalia Heights. 731 Comment
  CAS-BOT-BC181379  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow 1889 Comment
  CHSC48275  Stellaria crispa Vernon Oswald 1987-8-10 3208 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the edge of a streamlet at the e end of the largest (south) lake. 1935 Comment
  SD147596  Stellaria crispa Lowell Ahart 1981-9-15 3165 Butte Along French Creek 1299 Comment
  SEINET10537514  Stellaria longipes Mary Susan Taylor 1978-6-24 Taylor 1637 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  SEINET10537517  Stellaria longipes Lowell Ahart 1983-8-16 Ahart 4306 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  CAS-BOT-BC391084  Stellaria longipes subsp. longipes Lowell Ahart 1983-8-16 4306 Butte Near Bull Hill Road, about 3 1/2 miles south of Butte Meadows 1600 Comment
  CHSC103736  Stellaria media Lowell Ahart 2010-5-16 16703 Butte East of the basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 366 Comment
  CHSC113349  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  CHSC44489  Stellaria nitens Lowell Ahart 1988-3-27 5935 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CAS-BOT-BC395109  Stellaria nitens A. A. Heller 1916-4-13 12325 Butte Stilson canyon E of Chico Comment
  CAS-BOT-BC395113  Stellaria nitens Lowell Ahart 1980-3-11 2035 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA42852  Stellaria pallida L. Ahart 2012-4-3 17943 Butte On large rocks, on the north side of Bloody Pin Trail, west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC40007  Stephanomeria lactucina Lowell Ahart 1983-8-16 4307 Butte Along the banks of a small wash, near a small mountain meadow, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  SEINET10448512  Streptanthus campestris Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4187 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC40446  Streptanthus polygaloides Lowell Ahart 1985-5-15 4975 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
  CHSC93856  Streptanthus polygaloides Lowell Ahart 2006-6-9 12653 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  SEINET10481895  Streptanthus polygaloides Lincoln Constance 1941-5-28 Constance s.n. Butte Calyx yellow, petals white, brownish veined, crisped. Serpentine outcrop, with ceanothus, arctostaphylos, rhamnus and eriodictyon, pinus sabiniana- cupressus macnabiana- umbelularia assoc. S. Branch of the feather river at magalia, sierra nevada foothills. 488 Comment
  CHSC4161  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-11 338 Butte Found ca. 1/8 mi. E of Bidwel Bar along N side of R.R. tracks; on cliff above. 152 Comment
  CHSC93178  Streptanthus tortuosus var. tortuosus L. P. Janeway 1994-6-17 4666 Butte Northern High Sierra Nevada. Northwest side of canyon of North Fork Feather River, +-overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Southeast-facing road cutbank. 670 Comment
  CHSC95097  Streptopus amplexifolius var. americanus L. P. Janeway 2006-8-6 8833 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CAS-BOT-BC48057  Styrax redivivus M. S. Taylor 1982-5-23 4511 Butte S side of Hwy 70, near Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. Pulga SW quad. 487 Comment
  HSC66094  Styrax redivivus M. S. Taylor 1980-5-27 2699 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  RSA304177  Styrax redivivus James R. Shevock 1972-5-19 1783 Butte S of Storie. Feather River Cyn. 610 Comment
  CHSC116483  Styrax redivivus R. F. Thorne; E. W. Lathrop, W. Wisura 1977-7-8 49598 Butte Santa Ana Mountains: rocky ravine tributary to San Juan Canyon, along Ortega Highway (74) about 2 miles above San Juan Fire Station. Comment
  UC600726  Symphyotrichum foliaceum H. F. Copeland 1932-8-16 Butte Butte Creek (woods by) Jonesville 1500 Comment
  CAS-BOT-BC98089  Symphyotrichum spathulatum E. B. Copeland 1930-8-4 485 Butte Jonesville 1500 Comment
  CHSC44153  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald; Lowell Ahart 1988-7-26 3616 Butte Snow Mt. region located ca. 6 air mi SE of Jonesville. 1996 Comment
  CHSC69037  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC69673  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-29 3159 Butte South side of Humbug Rd. just E of Chaparral Guard Station, ca. 1.5 mi (air) WNW of Philbrook Reservoir. 1554 Comment
  CAS-BOT-BC221936  Taeniatherum caput-medusae John Thomas Howell 1962-6-15 37422 Butte 5 miles west of Oroville Comment
  UCD73065  Taeniatherum caput-medusae 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
  CHSC19952  Tauschia hartwegii M. S. Taylor 1975-2-16 382 Butte Ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  UC1609372  Tauschia kelloggii Lowell Ahart 1993-6-26 7029 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge, w of the Lost Creek Reservoir 1188 Comment
  CHSC48910  Tellima grandiflora Vernon Oswald 1984-4-9 1132 Butte Feather Falls Trail, 2.1 trail mi. from the trail head at the end of Bryant Ravine Rd. 457 Comment
  SEINET5334384  Tetrapteron graciliflorum K. Conger 1908-1 s.n. Butte Brush Creek Comment
  UC600472  Thalictrum fendleri H. F. Copeland 1929-6-11 Butte Jonesville Comment
  CHSC45804  Thalictrum fendleri var. fendleri Kirsten Tarp 1983-8-5 324 Butte Ca. 1.0 mi sw of Jonesville at Colby Creek; near stream. 1487 Comment
  UC9665  Thalictrum fendleri var. polycarpum Edw. L. Greene 1889-1 Butte Chico Comment
  CAS-BOT-BC88226  Thysanocarpus curvipes John Thomas Howell 1978-4-17 52841 Butte Sierra Nevada. Table Mountain. 381 Comment
  CHSC35014  Thysanocarpus curvipes R. E. Preston 1982-3-20 189 Butte Feather River canyon, n side of Hwy 70, ca. 18 mi n of Oroville. 646 Comment
  UC857573  Thysanocarpus curvipes A. A. Heller 1938-4-23 15051 Butte on Feather River Highway near t