Search Results — 2000 specimen records retrieved (1632 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC20540  Abelia schumannii Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  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
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. Comment
  UC725982  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Feather River near Stirling; Feather River near Stirling 975 Comment
  CAS-BOT-BC331608  Acer macrophyllum A. A. Heller 1921-3-28 13536 Butte Chico Comment
  CAS-BOT-BC331611  Acer macrophyllum Lowell Ahart 1982-5-8 3409 Butte Near the Forbestown Res. About 1 mile SW of the Forbestown Res., about 4 miles NE of Forbestown. 800 Comment
  SBBG50798  Acer macrophyllum J. Watjen 1969-5-4 36 Butte confluence of Rock Crk and N Fork Feather River 457 Comment
  UC203657  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek along the stream canyon of Chico Creek Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  CHSC65773  Acer negundo var. californicum Vernon H. Oswald 1996-4-10 7350 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the edge of a branch of Angel Slough at the SW corner of Tract 2, Sanctuary 1. 32 Comment
  CHSC3860  Acer palmatum Gary Dutton 1966-4-13 208 Butte CSC; South side of admin. bld. In front lawn. Chico Comment
  CAS-BOT-BC21701  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC21702  Achillea millefolium Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC49579  Achnatherum occidentale subsp. californicum Vernon Oswald 1985-7-2 1873 Butte Hwy 32 2.3 mi s of Lomo. 1133 Comment
  UC204377  Achnatherum occidentale subsp. californicum A. A. Heller 1914-6-2 11501 Butte areas about Chico Meadows 1219 Comment
  UCD51149  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville. 1550 Comment
  CHSC3259  Achyrachaena mollis Virginia Hagaman 1966-4-17 112 Butte 1.2 miles south east of Hooker Oak. Comment
  CHSC64063  Achyrachaena mollis Michael Deal 1992-4-21 19 Butte Vina-Cana Rd., ca. 0.25 mi n of Pine Creek, ca. 12 mi nnw of Chico. 60 Comment
  CHSC113845  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19276 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  JEPS122339  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19726 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC62739  Acmispon grandiflorus var. macranthus L. P. Janeway 1993-5-20 4350 Butte Plumas National Forest. Swayne Hill. South-facing road cutbank overlooking lower French Creek. 746 Comment
  HSC23345  Acmispon micranthus R. N. Bowman 1971-4-16 11 Butte 11.7 mi. E of Hwy. 70 on Pentz Rd. 91 Comment
  CHSC39540  Acmispon nevadensis Lowell Ahart 1983-5-28 4016 Butte Along a trail to Feather Falls, about 1/2 mile south of the falls, about 5 miles north of the town of Feather Falls. 600 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
  JEPS119989  Acmispon wrangelianus Lowell Ahart 2012-4-30 17932 Butte On the sides of Bloody Pin Trail, about 1/2 way between Guardian Trail and South Rim Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC412866  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville 2100 Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC52113  Aconogonon phytolaccifolium L. P. Janeway 1988-7-29 3105 Butte Above bank of Butte Cr at Butte Meadows, crossing of Bull Hill Rd (The Skyway). 1325 Comment
  CHSC55251  Aconogonon phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte Along the edges of Wildcat Creek, about 2 miles north-west of Four Trees, about 2 miles west of the Oroville-Quincy Highway, about 2 miles north-east of Coyote Gap. 1219 Comment
  UCD98786  Aconogonon phytolaccifolium H. F. Copeland 1930-7-21 s.n. Butte Jonesville. 1524 Comment
  SEINET3286839 Image available Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte Stream at Chaparral. 1524 Comment
  CHSC23705  Adenocaulon bicolor M. S. Taylor 1976-5-5 1120 Butte Scattered ca. 4 ft N of Bear Creek and the waterfall, ca. 1/4 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC27914  Adenocaulon bicolor M. S. Taylor 1978-7-19 1734 Butte Cherry Hill Campground, on S side of Old Humboldt Rd, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC20048  Adenostoma fasciculatum M. S. Taylor 1975-4-25 494 Butte Ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC20253  Adiantum aleuticum W. E. Hartman 1972-4-29 1 Butte Abundant 500 ft. from Centerville Rd., ca. 8 mi e of Centerville Cemetery. 249 Comment
  CHSC44611  Adiantum aleuticum Vernon Oswald 1985-7-15 1900 Butte Near Cresta Tunnel below the falls on Bear Ranch Creek via the dirt road opposite Cresta Rest Area on Hwy 70. 463 Comment
  CHSC23644  Adiantum jordanii M. S. Taylor 1976-4-4 1059 Butte On s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  CHSC41988  Adiantum jordanii Lowell Ahart 1975-3-7 704 Butte Along Ponderosa Way, about 1 1/2 miles south of the Ponderosa Reservoir, north-west of Forbestown. 426 Comment
  CHSC44988  Adiantum jordanii Louis C. Bock 1987-4-23 13 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  CHSC78216  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte On the north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC38317  Agoseris grandiflora Vernon Oswald 1983-6-16 691 Butte Upper Bidwell Park, Chico, on the north rim ca. 800 ft W of the E end of the North Rim Trail. 414 Comment
  CAS-BOT-BC13341  Agoseris retrorsa A. A. Heller 1913-5-28 10766 Butte Along Table Mountain 8 miles north of Oroville 182 Comment
  CAS-BOT-BC13342  Agoseris retrorsa A. A. Heller 1919-5-18 13169 Butte Stirling 1072 Comment
  CHSC30698  Agoseris retrorsa M. S. Taylor 1980-5-27 2724 Butte N side of Oroville-Quincy Hwy, ca. 2 mi S of Lake Madrone. 609 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
  SACT000053  Agropyron laeve Herbert Copeland 1935-7-25 Butte Comment
  CHSC75420  Agrostis avenacea Lowell Ahart 1999-6-12 8088 Butte Large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  UCD51814  Agrostis avenacea Bill B. Fischer 1977-6-1 s.n. Butte Biggs Rice Exper. Sta. Comment
  SEINET10846779  Agrostis avenacea Lowell Ahart 1990-5-25 Ahart 6492 Butte Below the high water line of Lake Oroville, E of the Enterprise Boat Launch Area. About 1/8 mile NW of the Enterprise Bridge across Lake Orovilla. T19N R6E nw/S6. Foothill Woodland (destroyed). 259 Comment
  CAS-BOT-BC127327  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  UCD52304  Agrostis exarata August L. Hormay 1929-7-24 s.n. Butte 3 miles North of Pulga. Comment
  CHSC70823  Agrostis exarata var. monolepis B. Castro; H. Durio, L. Gehrung 1995-7-24 589 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S of 'A' Spur off USFS Rd 22N84. 914 Comment
  SEINET10507086  Agrostis exigua Lowell Ahart, L. Hanson 1985-5-20 Ahart 5028 Butte About 1/2 mile east of Little Bald Rock, N of Oroville. Comment
  CAS-BOT-BC139720  Agrostis gigantea Lowell Ahart 1985-11-7 5235 Butte Below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards northwest of the Ponderosa Dam. 277 Comment
  RSA299243  Agrostis gigantea M. S. Taylor 1978-8-21 1796 Butte Lake Madrone at its s jct with Oroville-Quincey Hwy ca. 10 mi ne of Oroville. 610 Comment
Read comments
Oct 9 2010
  CHSC30300  Agrostis hendersonii M. S. Taylor 1980-5-27 2710 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  JEPS117408  Agrostis microphylla Lowell Ahart 2010-5-16 16700 A Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  CHSC50809  Agrostis pallens Vernon Oswald; Lowell Ahart 1990-7-31 4418 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  RSA129697  Agrostis scabra H. S. Yates 1936-8-13 6109 Butte Paynes Creek; 2.5 miles S.S.E. of Butte Meadow 1494 Comment
  UCD53293  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC26663  Agrostis stolonifera M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1493 Butte On n side of John Rd, ca. 4.8 mi s of its jct with Old Humboldt Rd, above Jonesville. 1981 Comment
  CHSC91470  Agrostis stolonifera Lowell Ahart 2005-7-13 12150 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
  CAS-BOT-BC138575  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit of Jonesville. 2133 Comment
  JEPS117641  Agrostis variabilis Lowell Ahart 2010-9-28 17257 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  SEINET10790429  Agrostis variabilis A. Arthur Heller 1914-8-7 Heller 11660 Butte Summit end of Jonesville on a north slope where snow lies until midsummer. Collected in Yellowstone Park. 2134 Comment
  CHSC42839  Agrostis viridis Lowell Ahart 1987-5-27 5700 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC48024  Ailanthus altissima John Thomas Howell 1980-5-28 53713 Butte Honcut Creek on road from Oroville to Marysville. 30 Comment
  JEPS119720  Ailanthus altissima Lowell Ahart 2012-6-28 18244 Butte On the north side of Big Chico Creek, east of Sycamore Pool, about 100 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC104830  Aira caryophyllea Lowell Ahart 2010-6-1 16753 Butte On the south side of the Guardians Trail, about 150 yards east of the end of Centennial, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. 125 Comment
  UCD55800  Aira caryophyllea var. capillaris L. Ahart 1980-4-13 2079 Butte ca. 1.5 mi north and 3/4 mi east of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78219  Aira elegans Lowell Ahart 2000-5-17 8363 Butte On the south margin of the Thermalito Afterbay, on the north side of the poor dirt road, about 1/10 mile north of the Richvale Highway, about 1/2 mile east of Highway 99, about 7 1/2 miles (air) west of Oroville. 42 Comment
  CAS-BOT-BC445434  Alisma triviale M. S. Taylor 1978-7-22 1850 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale 30 Comment
  CAS-BOT-BC131913  Allium Lowell Ahart 1978-5-24 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC101291  Allium amplectens Lowell Ahart 2009-4-17 15560 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
  CHSC36907  Allium amplectens R. A. Schlising 1980-7-25 3920 Butte N part of county near Lomo, 1.9 m ne of jct Hwy. 32 with Humboldt Road. Carpenter Ridge. Comment
  UC3060  Allium amplectens Mrs. Bruce May 1898 1898 Butte Little Chico Butte Comment
  SEINET12048529  Allium amplectens E. J. Baker 1984-1 7 Butte N side of Humboldt Rd., ca 5 yds N of road, .2 mi E of intersection with Stinson Canyon Rd 58 Comment
  CAS-BOT-BC465436  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC465439  Allium campanulatum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC40617  Allium cratericola Ahart; Jokerst 1985-3-24 4863 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
  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
  CHSC28049  Allium jepsonii J. D. Jokerst 1978-6-22 151 Butte T22N, R4E, sect. 17. [no other locality information given] Comment
  CHSC62602  Allium jepsonii B. Castro 1993-8-5 492 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, on WSW-facing slope below N edge of sharp curve in USFS Rd 23N28. 1133 Comment
  CAS-BOT-BC472965  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Cap; Sierra Nevada Comment
  CAS-BOT-BC472805  Allium obtusum Lowell Ahart 1988-3-28 5954 Butte Near Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CHSC23661  Allium obtusum var. obtusum M. S. Taylor 1976-4-24 1072 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
  CHSC38762  Allium peninsulare var. peninsulare Vernon Oswald 1983-4-25 386 Butte Upper Bidwell Park, Chico, on the north rim ca 0.4 mi w of the power lines. 182 Comment
  CAS-BOT-BC132071  Allium peninsulare var. peninsulare Carl B. Wolf 1937-5-13 8658 Butte Sierra Nevada Foothills, 6 6/10 mi. Se. of Oroville on road to Wyandotte 121 Comment
  UC600455  Allium validum unknown 1920-7 430 Butte Jonesville Comment
  CHSC34800  Alnus incana subsp. tenuifolia M. S. Taylor 1981-5-13 3698 A Butte On e side of 23N15.5 ca. 1 mi s of its jct with Four Trees Rd, ca. 8 air mi e of Pulga and 1/2 mi w of Oroville-Quincy Hwy. 1371 Comment
  CHSC113365  Alopecurus carolinianus Lowell Ahart 2014-4-16 19368 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
  JEPS87188  Alopecurus carolinianus Lowell Ahart 1992-4-7 6743 Butte ca. 2 mi. w. Biggs (on s. side of Biggs Princeton Rd.) 30 Comment
  CAS-BOT-BC137941  Alopecurus saccatus Lowell Ahart 1983-5-12 3978 Butte Sierra Nevada. About 0.5 mile northeast of Highway 99 and Pentz Road. 65 Comment
  CHSC116741  Alopecurus saccatus Lowell Ahart 2016-5-17 10837 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  JEPS104098  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 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
  SEINET10511193  Alopecurus saccatus Roland McKee 1909-1 McKee s.n. Butte Chico. Comment
  SEINET10937690  Amaranthus albus Lowell Ahart 1985-11-7 Ahart 5228 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  JEPS124124  Amaranthus blitoides Lowell Ahart 2015-10-9 20541 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
  UCD97194  Amaranthus blitoides A. A. Heller 1919-8-9 13351 Butte Chico. Comment
  JEPS106013  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico 57 Comment
  CHSC78367  Amaranthus palmeri Lowell Ahart 2000-7-23 8605 Butte On road gravel and in the prune orchard, on the west edge and side of the Midway, north of Butte Creek, about 2 1/2 miles south of Durham. 45 Comment
  CHSC76409  Amaranthus retroflexus Lowell Ahart 1999-10-28 8314 Butte On west side of a large pond, large disurbed 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
  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
  JEPS118411  Amelanchier utahensis Lowell Ahart 2011-7-9 17573 Butte Near a large open area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  CHSC42098  Ammannia coccinea Lowell Ahart 1986-11-9 5442 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1.4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS120552  Ammannia coccinea B. Castro, Margie Graham 2006-8-24 1600 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ~ 100 ft S of dirt road crossing the canal. Comment
  SBBG117249  Ammannia coccinea B. Crampton 1957-9-17 4631 Butte 5 mi NW of Biggs, Biggs Rice Experiment Station Comment
  UC1191563  Ammannia coccinea Herbert L. Mason 1945-9-19 12739 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CHSC32138  Ammannia robusta L. Ahart 1974-9-8 631 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC66359  Ammannia robusta Vernon H. Oswald 1996-6-20 7825 Butte Sacramento National Wildlife Refuge, Llano Seco unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 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
  JEPS102416  Ammi majus Lowell Ahart 2001-6-13 8814 Butte Sides of the dirt road south and east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  UCD169263  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile Road House, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  CHSC136  Amsinckia eastwoodiae E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  CHSC38269  Amsinckia intermedia Vernon Oswald 1983-2-9 64 Butte Upper Bidwell Park, Chico, on the North Rim ca 0.8 mi e of the power line. 320 Comment
  CHSC76935  Amsinckia intermedia Ida Ryan 1893-3-1 Butte Rancho Chico. Comment
  RSA754453  Amsinckia intermedia L. Ahart 2009-4-17 15545 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  RSA0090927  Amsinckia intermedia var. eastwoodiae C. C. Bruce 1897-05 1926 Butte [No locality information provided] Comment
  CHSC96552  Amsinckia lycopsoides L. P. Janeway 2006-4-30 8561 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  UC727076  Amsinckia lycopsoides A. A. Heller 1940-4-10 15535 Butte e of Chico (alongside Bidwell Park, near the radio station) Comment
  CHSC37418  Amsinckia menziesii Nancy A. Stevens 1971-4-23 19 Butte Found ca 30 ft. s of Highway 32 and ca 2.5 mi w of Forest Ranch 701 Comment
  CHSC99006  Anagallis arvensis Lowell Ahart 2008-5-21 14785 Butte Damp bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC55052  Anaphalis margaritacea Lowell Ahart 1991-8-25 6710 Butte On the north side of Four Trees Road, near a small branch of Mill Creek, about 5 miles east of Highway 70. 1066 Comment
  SEINET10511333  Andropogon glomeratus Mary Susan Taylor 1977-11-12 Taylor 1532 Butte Devil's Kitchen area on S side of Upper Bidwell Park Road, Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC108806  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC61625  Angelica breweri Lowell Ahart 1993-9-8 7174 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  JEPS98278  Anthoxanthum odoratum Lowell Ahart 2000-6-29 8539 Butte On the northwest side of Concow Road at Flea meadow, about .5 mile west of Flea Mountain, about 3.5 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CDA5612  Anthriscus caucalis L. Ahart 2005-4-18 11729 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. Comment
  CHSC1951  Anthriscus caucalis A. Goekler 1929-4-25 Butte Chico. 57 Comment
  JEPS115306  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CHSC21049  Antirrhinum cornutum M. S. Taylor 1975-10-3 937 Butte On the Sacramento River, ca. 1/4 mi n of the washout on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC43152  Antirrhinum cornutum R. A. Schlising 1980-7-25 3918 Butte Along Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo; NW-facing slopes of volcanics mudflow outcrops on Carpenter Ridge. 1341 Comment
  SEINET10964553  Antirrhinum cornutum Mary Susan Taylor 1975-10-3 Taylor 937 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
  CHSC63721  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte Along the south side of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile south-west of the Forbestown Reservoir Dam, about 2 miles (air) north and 3 1/2 miles east of Forbestown. 762 Comment
  HSC92438  Antirrhinum vexillocalyculatum subsp. intermedium L. Ahart 1981-7-7 2933 Butte 0.5 mi. W of the Forbestown Reservoir, along edge of dirt road, NE of Forbestown 701 Comment
  CAS-BOT-BC454511  Aphanes occidentalis Lowell Ahart 1983-4-7 3968 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/8 miles east hof Honcut 50 Comment
  JEPS129818 Image available Aphyllon epigalium Karen D. Cox 1974-6-1 188 Butte Paradise, found in yard at 1332 Elliott Road. Comment
  UC175568  Apocynum cannabinum A. A. Heller 1913-6-4 10779 Butte Table Mt. Olive Ranch n. of Oroville; Table Mt. Olive Ranch Comment
  POM75789  Apocynum cannabinum C. C. Bruce 1898-05 s.n. Butte Sloughs Comment
  RSA4208  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville. 1550 Comment
  CHSC52192  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-15 293 Butte W bank on Butte Creek, SW of Butte Meadows. 1280 Comment
  SEINET10449329  Arbutus menziesii Mary Susan Taylor 1976-3-6 Taylor 1007 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  JEPS103529  Arceuthobium campylopodum Lowell Ahart 2002-6-21 9753 Butte On the S side of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1095 Comment
  CAS-BOT-BC409925  Arceuthobium campylopodum Lowell Ahart 1987-9-29 5907 Butte along dirt road that ends at Sugar Pine Point, about 0.5 miles S of Lumpkin Ridge Road, about 1 mile SE of Camp 18 and 7 miles NE of Feather Falls 1280 Comment
  SEINET10492825  Arceuthobium occidentale Mary Susan Taylor 1979-3-20 Taylor 1953 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  RSA629061  Arctostaphylos Jon E. Keeley 1983-6-27 7815 Butte Highway 70 and Magolia Pentz Road. Comment
  CAS-BOT-BC24433  Arctostaphylos manzanita Lowell Ahart 1975-3-30 s.n. Butte Near ne. corner of Peter Ahart Ranch. 45 Comment
  RSA178613  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte At the Ten Mile House east of Chico. Comment
  UC412700  Arctostaphylos manzanita subsp. manzanita W. P. Taylor 1912-5-27 Butte 4 mi N Oroville, Chambers Ravine Comment
  CAS-BOT-BC24253  Arctostaphylos mewukka John Thomas Howell 1978-4-18 52851 Butte De Sabla. 853 Comment
  RSA31999  Arctostaphylos mewukka A. A. Heller 1942-1-4 16346 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  SD49843  Arctostaphylos mewukka A. E. Wieslander 1933-6-24 329 Butte Chico quadrangle, 1 mi. E of Paradise on Pearson Road 519 Comment
  UC1094001  Arctostaphylos mewukka Lewis S. Rose 1955-6-15 55103 Butte 6 mi se Paradise (on Pentz Rd) 426 Comment
  UC726657  Arctostaphylos mewukka A. A. Heller 1942-3-22 16405 Butte 1/2 mi below first house; Cohassett Comment
  UC726686  Arctostaphylos mewukka A. A. Heller 1942-3-1 16383 Butte on Pentz-Magalia road three mi below Paradise Comment
  SBBG125910  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte ca 100 yards SW of intersection of Forbestown Rd and Black Bart Rd, ca 11 mi E of Oroville 741 Comment
  CAS-BOT-BC38564  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CAS-BOT-BC38569  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-24 15505 Butte On the Humboldt Road 0.5 mi. w. of the Ten Mile House site. Comment
  CAS-BOT-BC38571  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1989-4-17 6480 Butte 2 mi. n. on Coutolenc Road. from junction of skyway. 701 Comment
  POM219294  Arctostaphylos patula H. F. Copeland 1928-6-5 223 Butte Jonesville. 1524 Comment
  UCD51933  Arctostaphylos truei John Thomas Howell 1975-6-15 51109 Butte Skyway near Billie Road, Paradise, Butte County. Transition Zone. 609 Comment
  UCD51946  Arctostaphylos truei John Thomas Howell 1975-6-15 51090 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  SEINET11989221  Arctostaphylos truei J. T. Howell 1975-1 51100 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  SEINET10907226  Arctostaphylos viscida Mary Susan Taylor 1974-3-3 Taylor 71 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CAS-BOT-BC48297  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51084 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC32621  Arctostaphylos viscida subsp. viscida M. S. Taylor; L. Hanson 1981-3-31 3456 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
  SBBG126077  Arctostaphylos viscida subsp. viscida L. Ahart 2012-3-2 17762 Butte ca 200 yards N of Ten Mile House Rd, ca 200 yards W of Hwy 32, ca 9 mi NE of Chico 422 Comment
  CHSC78358  Aristida dichotoma Lowell Ahart 2000-6-27 8519 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC78552  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  JEPS94665  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
  CAS-BOT-BC400417  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain Comment
  CAS-BOT-BC400427  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte In the canyon of Big Chico Creek east of Chico 68 Comment
  HSC65302  Aristolochia californica J. P. Smith 1973-3-22 5917 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  POM165725  Aristolochia californica E. B. Copeland 1903-4-10 s.n. Butte Chico Comment
  UC543770  Aristolochia californica Herbert L. Mason 1927-5-10 3717 Butte ne of Oroville (Table Mountain, Coal Creek); Table Mountain, Coal Creek Comment
  UCD137823  Aristolochia californica Michael A. Vincent; Ethan H. Freid 1998-4-6 8134 Butte Table Mountain. Comment
  CAS-BOT-BC82110  Arnica chamissonis A. A. Heller 1928-7-25 14701 Butte Butte Creek House Comment
  CHSC105176  Arnica chamissonis B. Castro; L. P. Janeway 1999-8-1 1019 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  JEPS121969  Arnica discoidea Lowell Ahart 2014-7-7 19568 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  CHSC87782  Arrhenatherum elatius Paul Maslin 2004-5-21 34 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611255E 4411193N. 487 Comment
  CAS-BOT-BC146271  Arrhenatherum elatius var. elatius Lowell Ahart 1988-7-31 6151 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC28531  Artemisia douglasiana M. S. Taylor 1979-9-28 2198 Butte At Butte County line at Hwy 70, between boundry and Arch Rock Tunnel. 487 Comment
  RSA769225  Artemisia douglasiana L. Ahart 2009-11-19 16554 Butte East side of Big Chico Creek, southwest of meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 209 Comment
  RSA794971  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, about 0.5 miles west of Pacific Heights Road, about 3.5 air miles northwest of Palermo. 32 Comment
  RSA30562  Artemisia douglasiana I. L. Wiggins 1928-9-9 3347 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC109058  Arum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17904 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC94100  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  JEPS108902  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CAS-BOT-BC400632  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SEINET10580344  Asclepias cordifolia R. M. Austin Austin 287 Butte Little Chico Creek Comment
  CHSC47973  Asclepias eriocarpa Vernon Oswald 1985-6-2 1794 Butte Upper Bidwell Park, Chico, on the edge of Parking Area H at Day Camp. 91 Comment
  SEINET10529847 Image available Aspidotis carlotta-halliae Mary Susan Taylor 1979-3-19 Taylor 1926 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CAS-BOT-BC65909  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 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
  CAS-BOT-BC178459  Astragalus gambelianus Lowell Ahart 1981-4-24 2789 Butte Near North Honcut Creek on the Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut. 50 Comment
  CAS-BOT-BC178463  Astragalus gambelianus Lowell Ahart 1985-5-10 4940 Butte Along the edge of the Cherokee Road, north of where the public parks, about 5 miels north of Oroville. 450 Comment
  UC176262  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte hills six mi n Oroville; n of Oroville Comment
  CHSC12922  Astragalus pauperculus J. A. Roberts 1973-4-4 3 Butte Ca. 200 yds n of Upper Bidwell Park Road, and 0.25 mi e of East Ave., Chico. 60 Comment
  CHSC44493  Astragalus pauperculus Lowell Ahart 1988-5-12 5990 Butte Open pasture field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  CHSC88249  Asyneuma prenanthoides Lowell Ahart 2004-7-11 11247 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC44150  Athyrium distentifolium var. americanum V. Oswald; L. Ahart 1988-7-29 3651 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Somewhat below the n brow of the ridge. 2097 Comment
  CHSC51051  Athysanus pusillus Pauleen Broyles 1987-3-24 997 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer addition. Bank along Pine Creek just S of its confluence of Singer Creek. Comment
  CHSC46867  Atriplex cordulata Vernon Oswald 1989-9-6 3987 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  UCSB64018  Atriplex lentiformis Ahart, Lowell 1981-7-26 Butte east of the dirt road, about 1 mile north¬west of Pennington Road, about 1/2 mile north¬east of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 30 Comment
  UCD97798  Atriplex serenana A. A. Heller 1919-8-9 13350 Butte Chico. Comment
  CHSC4394  Avena barbata R. L. Smith 1966-5-15 Butte Paradise, 5 mi sw of Post Office. Comment
  CHSC46431  Avena barbata Lowell Ahart 1989-5-23 6233 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC31711  Avena fatua L. Ahart 1978-5-1 1699 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC9343  Avena fatua B. Anthony 1968-4-14 456 Butte 3 miles E. of Hamilton City on Hwy. 32. Comment
  RSA129570  Avena fatua C. G. Albertus 1933-6-6 21 Butte 1/4 mi. W. of Pentz [Rd.]; Chico 137 Comment
  SEINET10839518  Azolla filiculoides Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4850 Butte On shallow water in the ditch south of Highway 70, at the intersection of Highway 70 and 191. Comment
  CHSC103171  Azolla microphylla Lowell Ahart 2009-11-19 16558 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northest of Chico. 242 Comment
  CHSC34781  Baccharis pilularis subsp. consanguinea Lowell Ahart 1981-11-6 3225 Butte On S side of rd, a little E of Graylodge Waterfowl Mgmt HQ, ca. 1/2 mi W of Pennington Rd, ca. 12 mi SW of Gridley. 35 Comment
  CHSC66361  Bacopa rotundifolia Vernon H. Oswald 1996-6-20 7830 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CAS-BOT-BC106558  Balsamorhiza deltoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC26835  Barbarea orthoceras M. S. Taylor; M. Hayes 1978-6-24 1654 Butte In meadow, on n side of Scotts John Rd, ca. 3 mi e of its jct with Old Humboldt Rd, ca. 5 mi e of Jonesville. 1676 Comment
  UC397039  Barbarea orthoceras E. Copeland 1929-7-14 Butte near Jonesville 1600 Comment
  UCD114285  Barbarea orthoceras Robert E. Preston 1985-4-4 512 Butte ca. 1.8 km e of Pulga, at confluence of Dogwood Cr and N Fork Feather R. Montane Forest. 433 Comment
  SEINET10448247  Barbarea orthoceras Mary Susan Taylor 1975-8-31 Taylor 892 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
  CHSC479  Barbarea verna G. Spurlock 1935-5-15 Butte Chico. 57 Comment
  CHSC40919  Berberis aquifolium var. dictyota Lowell Ahart 1970-4-5 41 Butte Along Robinson Mill Road, north-east of Bangor. 457 Comment
  UC854679  Berberis aquifolium var. dictyota A. A. Heller 1917-3-18 12669 Butte lower end of Iron Canyon (Chico Creek) Comment
  CAS-BOT-BC75546  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  JEPS124257  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  SEINET10473664  Bidens frondosa Mary Susan Taylor 1978-9-8 Taylor 1877 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC11920  Bistorta bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  CHSC90187  Blennosperma nanum Ross L. Jones 1989-2-25 3 Butte Ca. 100 m e of abandoned city dump bordered by Highway 32 and Humboldt Rd., immediate outskirts e of Chico. 60 Comment
  SD8784  Blennosperma nanum R. M. Austin May 1883 Butte Chico Comment
  CHSC88976  Blennosperma nanum var. nanum Christine Hantelman 2000-2-17 4 Butte On west side of Meridian road about 1.5 mi north of Hwy 99 turnoff. Along road shoulders. 57 Comment
  CHSC113241  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte Near the top of rim cliffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC41902  Boechera breweri subsp. shastaensis Lowell Ahart 1961-2-26 2 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  UC726942  Boechera breweri subsp. shastaensis A. A. Heller 1920-3-28 13359 Butte Ten Mile House Comment
  CHSC38019  Boechera platysperma R. A. Schlising; K. Tarp 1982-7-24 4347 Butte Extreme e Butte County, e of Stirling City at Ramsey Bar on Kimshew Creek. 1341 Comment
  CHSC35759  Boechera rectissima R. E. Preston 1982-6-15 301 Butte At e margin of meadow; Cherry Hill, ca. 2 mi w of Jonesville. 1414 Comment
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  SEINET174979 Image available Botrychium simplex E. B. Copeland 1931-6-9 601 Butte Jonesville. 1500 Comment
  CHSC43074  Boykinia major L. P. Janeway 1987-6-26 2290 Butte At Rag Dump. Damp meadowy creekside (Fall Cr). 1173 Comment
  JEPS110294  Brickellia californica Lowell Ahart 2006-9-11 13335 Butte Gravel bar, south side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  CHSC2125  Briza minor M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC6667  Briza minor Marilyn Lee 1968-4-19 126 Butte West side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S. E. of cemetary, Table Mt. Comment
  POM204991  Briza minor A. A. Heller, H. E. Brown 1902-5-6 1439 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10967591  Briza minor Orme 1980-4-9 Orme 19 Butte Large population, T22N R2E NW1/4 of Sec. 17. 0.8 km on main road through upper Bidwell Park. 1.6 km N of Chico. Found on the edge of a open, rocky field. Soil a loam to sandy loam. 64 Comment
  SEINET10967594  Briza minor A. Arthur Heller, H. E. Brown 1902-5-6 Heller 5475 Butte Berry Canyon (near Clear Creek). Comment
  CAS-BOT-BC482216  Brodiaea californica subsp. californica A. A. Heller 1938-5-22 15106 Butte Plentiful near Chico airport Comment
  CHSC78756  Brodiaea coronaria subsp. coronaria L. P. Janeway 2000-5-14 6722 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  CHSC84255  Brodiaea elegans subsp. elegans Lowell Ahart 2003-5-26 10215 Butte On dredge tailings, on the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  HSC38057  Brodiaea elegans subsp. elegans Thomas W. Nelson, Jane P. Nelson 1976-5-10 2464 Butte Beside SR 191 just N of its junction with SR 70 Comment
  UC768712  Brodiaea minor R. F. Hoover 1936-5-21 1173 Butte 3 mi n Cana Comment
  CAS-BOT-BC484557  Brodiaea minor A. A. Heller 1928-6-28 14657 Butte At Butte Meadows Comment
  UCD139154  Brodiaea nana Robert E. Preston 2003-5-11 2129 Butte around 2 miles south of Oroville Airport, on east side of Thermalito Afterbay, along Larkin Road. 30 Comment
  UCD139155  Brodiaea nana R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  SEINET8194052  Brodiaea purdyi A. A. Heller, H. E. Brown 1902-5-10 s.n. Butte Berry Canyon, near Clear Creek. Comment
  CHSC112681  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  NY990638  Brodiaea sierrae R. Preston 2004-6-19 2261 Butte 1.3 mi. W of Hurleton, along Forbestown Rd. 434 Comment
  RSA700240  Bromus carinatus L. Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the bridge across the West Branch of the Feather River, about 1.5 miles (air) west of Philbrook Reservoir Dam, about 3.75 miles (air) southeast of Butte Meadows. 1457 Comment
  UC816144  Bromus carinatus var. carinatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows 1280 Comment
  JEPS88260  Bromus commutatus Vernon H. Oswald and Lowell Ahart 1996-5-27 7660 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (sw corner of Tract 3.4, Sanctuary II, Sacramento R. National Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC82676  Bromus diandrus Tara Morgan 2002-4-23 45 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. Off of highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  UC1131173  Bromus diandrus J. E. Sowder 1933-6-6 83 Butte 1/4 mi w of Pentz 137 Comment
  SEINET6778858  Bromus diandrus H. C. Jansen 1984-1-5 Butte Chico Comment
  SEINET6778864  Bromus diandrus M. Maynarel 1975-5-15 Butte Chico, Abandoned field Comment
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  HSC41095  Bromus hordeaceus J. P. Smith, J. O. Sawyer 1973-4-14 6047 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CDA1830  Bromus japonicus L. Ahart 1998-6-3 8015 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  CHSC49511  Bromus japonicus Vernon Oswald 1987-5-28 2935 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Pk. Lookout. 890 Comment
  CAS-BOT-BC162456  Bromus laevipes John Thomas Howell 1962-6-15 37514 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162459  Bromus laevipes P. B. Kennedy 1914-5-1 s.n. Butte Gradeta Paradice. Comment
  CAS-BOT-BC162463  Bromus laevipes Lowell Ahart 1977-5-2 1470 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC6164  Bromus laevipes E. Parreno 1968-4-28 79 Butte Ridge ne side of Covered Bridge. 60 Comment
  JEPS120988  Bromus laevipes Lowell Ahart 2013-5-27 18716 Butte On E side of Black Bart Road, about 0.75 road miles SW of intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  SEINET10520326  Bromus macrostachys Lowell Ahart 1987-5-6 Ahart 5550 Butte On dry disturbed soil 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
  CAS-BOT-BC162359  Bromus madritensis John Thomas Howell 1962-6-15 37490 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC162363  Bromus 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 southeast of Jarbo Gap. 283 Comment
  UCD80527  Bromus rubens CNPS SN Foothill Team 2005-5-6 SNFN 0160 a Butte City of Chico, Upper Bidwell Park, on the northwest side of Upper Park Road, directly across from parking area 'M. 149 Comment
  SEINET10507343  Bromus sterilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4238 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SEINET10515117  Bromus tectorum Lowell Ahart 1966-5-20 Ahart 5279 Butte On dry bare soil, near the edge of the road that goes to the Forbestown Reservoir, about 1 mile SW of the Forbestown Reservoir, about 3 1/2 miles NE of Forbestown. Yellow Pine Forest. 610 Comment
  CHSC90918  Calandrinia ciliata Lowell Ahart 2005-4-18 11739 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
  CHSC29268  Callitriche heterophylla var. bolanderi R. A. Schlising 1980-4-2 3540 Butte Richvale vernal pools, 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC113215  Callitriche heterophylla var. heterophylla Lowell Ahart 2014-4-26 19415 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
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC46260  Callitriche stagnalis Vernon Oswald 1989-5-19 3778 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a pond located in an old channel of the Sacramento River. 45 Comment
  CHSC65332  Callitriche verna Lowell Ahart 1995-10-3 7668 Butte Along the north side of Butte Creek, about 150 yards east of the bridge across Butte Creek, in Butte Creek House Meadow, about 2 1/2 miles (air) north-east of Snag Lake. 1767 Comment
  CHSC27198  Calocedrus decurrens P. Moyer 1971-10-2 27 Butte N side Ed.-Psych. Bldg. On CSUC campus. 60 Comment
  CHSC3348  Calocedrus decurrens Robert L. Smith 1966-4-23 18 Butte Bull Run Rd. 5 miles W of Butte Meadows. Comment
  UC565379  Calochortus albus Helen Hedges 1937-5-22 Butte near Enterprise (Midas Mine); South Fork of the Feather River 396 Comment
  CAS-BOT-BC489974  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  CAS-BOT-BC492563  Calochortus minimus H. F. Copeland 1920-7-11 69 Butte Scitch John meadows 1828 Comment
  CHSC57549  Calochortus monophyllus Suzanne Hermansen 1991-4-20 25 Butte ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  POM219307  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CHSC27343  Calochortus superbus T. B. Devine 1977-5-5 410 Butte Beside Humbug Road, 1.2 mi ne of Centerville. 350 Comment
  CHSC38876  Calochortus superbus Vernon Oswald 1983-5-18 505 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power line. 243 Comment
  CHSC95161  Calochortus superbus R. D. Fischer 2004-4-20 803 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy 32. Collected along Guardian Trail, north of the Disk Golf Course, on a grassy hillside. 335 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
  CAS-BOT-BC494315  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Shallow ravine, summit between the West Branch and North Fork of the Feather River on highway 324, in the Arid Transition Life Zone. Comment
  POM109542  Calochortus tolmiei C. C. Bruce 1898-05 2407 Butte [No locality information provided] Comment
  LA207379  Caltha leptosepala E. B. Copeland; June 1930 sn Butte Jonesville, N Willow Creek 1550.0 Comment
  CHSC51252  Calycadenia ciliosa Lowell Ahart; Mary Sue Taylor 1990-8-28 6595 Butte On the south side of Highway 32, about 3 miles east of Chico. 182 Comment
  CHSC46913  Calycadenia multiglandulosa Lowell Ahart 1980-7-4 2448 Butte Near the Oak Grove Cementery, about 1/2 mile southeast of Hurleton. 548 Comment
  CAS-BOT-BC106090  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 miles N. of Chico on Richardson Springs Road. Comment
  CHSC37503  Calycadenia oppositifolia J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1678 Butte Table Mountain. Ca. 150 meters due north of Phantom Falls (W edge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  RSA255507  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 miles W of Paradise, south side of Chico-Paradise Hwy Comment
  UCD129784  Calycadenia oppositifolia Gerald D. Carr 1971-6-5 558 Butte Vic. Jarbo Gay, Hwy 70, above turnout to Concow Road. Comment
  UCD129785  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mile west of Paradise. South side of Chico-Paradise Hwy. Comment
  CHSC31566  Calycadenia spicata L. Ahart 1972-6-21 117 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC1119109  Calycadenia spicata F. W. Embree 1934-4-24 44 Butte 4 1/2 mi n and 1 1/2 mi e of Biggs; Marysville 38 Comment
  CHSC25457  Calycadenia truncata Marc Hayes; Warner 1977-9-12 99 Butte On Butte College Campus, at intersection of Pentz and Clark Rds., ca. 15 SE of Chico. 82 Comment
  CAS-BOT-BC275381  Calycadenia truncata var. truncata A. A. Heller 1938-6-14 15152 Butte On Highway 24, 23 miles E of Oroville Comment
  CAS-BOT-BC275392  Calycadenia truncata var. truncata Lowell Ahart 1988-6-29 6085 Butte N of Swedes Flat Road, about 1 mile E of Oroville Bangor Highway, about 5 miles N of Bangor 304 Comment
  CAS-BOT-BC90921  Calycanthus occidentalis Lowell Ahart 1966-5-17 s.n. Butte Honey Run Road, near Chico. 152 Comment
  SD1523  Calyptridium monospermum J. B. Copeland 1930-7-9 Butte Jonesville 1500 Comment
  UC1136676  Calyptridium monospermum J. E. Sowder 1933-7-5 103 Butte 2 mi se of Promentory Point 1066 Comment
  CHSC63134  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1994-7-1 7442 Butte Around large rocks, on the north side of the larger pond, steep rocky slope on the north side of Henness Pass Road,at Keystone Gap, east of Keystone Mountain, about 1-1/2 miles north-east of Middlewaters, about 11 miles (air) northeast of Alleghany. 1889 Comment
  SEINET10496683  Calystegia polymorpha Mary Susan Taylor 1981-5-15 Taylor 3755 Butte T22N R5E nw sec 20, Berry Creek quad. N side of 22N84, ca. 1 air mi SW of Hungrey Hunt Peak, ca. 3 air mi S of Pulga on Feather River Hwy 70. 3300 ft. 1006 Comment
  POM219372  Camassia leichtlinii subsp. suksdorfii H. F. Copeland 1931-6-9 1525 Butte Jonesville. 1524 Comment
  JEPS94294  Campanula prenanthoides Lowell Ahart 1997-8-1 7793 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on w side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  RSA699700  Campanula prenanthoides L. Ahart 2004-7-11 11247 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast fo Paradise Dam, about 4 mi. (air) southwest of Stirling City. Yellow Pine Forest. 815 Comment
  SEINET10463077  Campanula prenanthoides Mary Susan Taylor 1980-9-12 Taylor 3336 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
  CHSC61303  Campanula scouleri Lowell Ahart 1993-7-22 7078 Butte Under trees in the campground on the west side of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC26512  Capsella bursa-pastoris P. Moyer 1972-3-4 109 Butte CSUC Campus. 1st and 2nd on Ivy, w side. 60 Comment
  CHSC38034  Capsella bursa-pastoris R. E. Preston 1982-11-13 365 Butte At edge of almond orchard, s side of Nelson Rd at jct with Adobe Rd, ca. 3 1/4 mi ne of Nelson. 46 Comment
  CHSC90194  Capsella bursa-pastoris Robert Kissane 1989-4-23 20 Butte On Moore's ranch, 2090 Oak Park Ave., Chico. 70 Comment
  CAS-BOT-BC37065  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico. Comment
  CHSC35761  Cardamine breweri R. E. Preston 1982-6-18 303 Butte At stream margin; site of Merrimac, ca. 22 mi ne of Oroville. 1173 Comment
  CHSC3612  Cardamine californica R. Jaegel 1966-3-2 19 Butte Collected 6 miles Northeast of Chico, in Upper Bidwell Park along the north bank of Butte Creek. Comment
  CHSC4049  Cardamine californica J. W. Cherry 1967-3-27 Butte Ca. 3 ft. from edge of Big Chico Creek, 100 yds. e of end of Bidwell Park road. 176 Comment
  CHSC501  Cardamine californica G. Spurlock 1935-3-19 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC101089  Cardamine oligosperma Lowell Ahart; John Dittes 2009-3-20 15505 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
  CHSC44482  Cardamine oligosperma Lowell Ahart 1988-3-27 5932 Butte Along the North Fork of the Feather River near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  HSC64130  Cardamine oligosperma J. P. Smith 1973-3-22 5922 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA715888  Cardamine oligosperma L. Ahart 2005-4-2 11684 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  UC1609210  Cardamine oligosperma Vernon H. Oswald and Lowell Ahart 1993-3-24 5246 Butte n. of historical site of Pentz (on e. side of a secondary drainage entering Dry Creek 2 mi n. of Pentz Rd., e. side Dry Creek Canyon); Dry Creek Canyon, drainage entering Dry Creek 262 Comment
  CHSC73757  Cardamine pachystigma B. Castro 1996-3-26 658 Butte Ca 7.5 air mi NW of Brush Creek, 0.6 mi SE of Big Bar Mtn, and 150 ft S of USFS Rd 23N28, at E edge of meadow below Wyman Spring. 1188 Comment
  CHSC86576  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7770 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.3 km northeast of Bloomer Hill. 293 Comment
  SEINET10644206  Carex Lowell Ahart 2003-6-30 Ahart 10324 Butte T19N, R6E, northwest 1/4 Section 4. On the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  CHSC52278  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-22 3068 Butte Upper canyon of Philbrook Cr, 0.7 mi W of the pass. 1889 Comment
  JEPS121933  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  CHSC99414  Carex amplectens Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10530 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. 1740 Comment
  NY25690  Carex amplifolia H. M. Hall 1914-7-25 9782 Butte Jonesville 1554.5 Comment
  JEPS106369  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  UC1594681  Carex athrostachya Lowell Ahart 1992-7-21 6805 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  SEINET10927860  Carex aurea Mary Susan Taylor, Lowell Ahart 1982-8-15 Taylor 4191 Butte T25N R5E SW1/4 SE1/4 Sec 35. Joneville SW quad. S side of Coon Hollow Rd in moist spot, 1.1 mi E of its jct with Humbug Rd. 12 mile NE of Stirling City. With Perideridia howellii, Hypericum anagalloides. 1676 Comment
  RSA767484  Carex bolanderi L. Ahart 2010-6-12 16796 Butte North side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 air miles west of Highway 32, about 9 air miles northeast of Chico. 238 Comment
  SEINET7552619 Image available Carex bolanderi Lawrence P. Janeway, Marcia Waterway; Martin Lechowicz 2006-8-3 8824 Butte Northern High Sierra Nevada; pond below Lumpkin Ridge Road about 10km east of Feather Falls and about 1.0km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek; Rooted in soft muddy muck in shady cove of the pond; Clipper Mills 7.5' quad 1209 Comment
  CHSC45047  Carex capitata Vernon Oswald 1987-5-11 2386 Butte Chico Meadows ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC107578  Carex cyrtostachya Lowell Ahart 2011-8-19 17639 Butte On the north side of a good forest road, about 1/2 mile north of the Lost Creek Reservoir dam, about 4 1/2 miles (air) north of Clipper Mills. 1266 Comment
  CHSC47130  Carex densa Vernon Oswald 1983-4-6 294 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. 198 Comment
  CHSC52857  Carex densa L. P. Janeway 1988-6-26 2883 Butte SE rim of Coon Ridge overlooking Nance Canyon; ca 0.6 mi NE of the power lines (high voltage). 182 Comment
  CHSC111380  Carex divulsa subsp. divulsa Lowell Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 63 Comment
  CHSC111961  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte On dry good soil, not maintained lawn, NW of intersection of W. Frances Willard Ave. and Arcadian Ave., 1 block so. of Chico High School, Chico. 59 Comment
  UC1108994  Carex echinata subsp. echinata H. F. Copeland 1932-7-17 Butte vicinity Jonesville; Lassen National Forest 1500 Comment
  CHSC99757  Carex feta Lowell Ahart 2008-6-13 14818 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
  RSA770105  Carex feta L. P. Janeway, B. Castro 2009-7-4 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CAS-BOT-BC20004  Carex feta Lowell Ahart 1988-6-23 6065 Butte North of Forbestown Road, about .08 mile east of the intesection of Black Bart Road and Forbestown Road. 670 Comment
  CHSC43911  Carex fracta L. P. Janeway 1987-6-8 2157 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of the road to Coyote Gap. 640 Comment
  CHSC44292  Carex fracta Vernon Oswald 1988-6-20 3408 Butte East of Humboldt Rd. 1.4 mi ne of Lomo. Along the edge of the W. Branch of Butte Creek at the bottom of a ravine. 1292 Comment
  SEINET7561219 Image available Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road, Yellow Pine Forest. 750 Comment
  CHSC43885  Carex heteroneura var. heteroneura L. P. Janeway 1987-7-4 2427 Butte Seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CAS-BOT-BC146661  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown 838 Comment
  CAS-BOT-BC28193  Carex hirtissima James D. Jokerst 1982-6-4 1591 Butte Headwaters of Concow Creek ca 1.0 mi S of Flea Valley. 1097 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
  CHSC47058  Carex hirtissima L. P. Janeway 1989-5-17 3241 Butte Drying wet area along Forbestown Rd 9.2 mi E of Oroville-Quincy Hwy, and 0.1 mi W of Lower Forbestown Rd. 798 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
  SEINET4286153  Carex hoodii Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir. 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
  UC1564775  Carex integra V. Oswald and L. Ahart 1989-6-27 3831 Butte ca. 3.3 air mi se Jonesville (Humbug Rd.); Butte Creek, Butte Creek House 1767 Comment
  CHSC44662  Carex jonesii L. P. Janeway 1987-6-27 2345 Butte Mdw just E of Keyser Cr; 4.3 mi N of Ramsey Bar along Concow Rd. 1478 Comment
  JEPS110203  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC42842  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Seep like area on the south side of the dirt road, about 1 mile east of Coon Hollow Road, south-east of Snag Lake, about 10 miles north of Inskip. 1737 Comment
  CHSC43884  Carex laeviculmis L. P. Janeway 1987-6-26 2295 Butte At Rag Dump. Near Fall Creek. 1173 Comment
  JEPS121925  Carex laeviculmis Lowell Ahart 2014-7-10 19610 Butte South of the intersection of Humbug Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CDA14081  Carex lemmonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13964 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  CHSC42815  Carex lemmonii L. P. Janeway 1987-6-13 2215 Butte Mdw just NE of jct of Concow Rd and rd to Flea Mtn. 1188 Comment
  JEPS105281  Carex lemmonii Dean W. Taylor 1995-8-6 15394 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Sierra Nevada 1706 Comment
  SEINET7485354 Image available Carex lemmonii Peter F. Zika 2009-1 24519 Butte below Concow Road 11.5 road miles above (N of) Route 70, at Dixie Road, Cascade Range 1210 Comment
  SEINET6190661 Image available Carex macloviana subsp. subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville; Jones Creek 1500 Comment
  CAS-BOT-BC32200  Carex multicaulis Lowell Ahart 1982-6-4 3537 Butte Ca 8 mi E of Feather Falls, 1.5 mi E of Camp 18. 1000 Comment
  CHSC43900  Carex multicaulis L. P. Janeway 1987-6-5 2147 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at French Cr. 640 Comment
  CAS-BOT-BC32161  Carex multicaulis L. P. Janeway 1987-6-13 2191 Butte Pulga quad, along Ponderosa Way (Rim Road) 2.5 mi NE of Jarbo Gap. 883 Comment
  CAS-BOT-BC32162  Carex multicaulis Lloyd W. Swift 1934-5-8 106 Butte S Challenge 914 Comment
  CHSC44117  Carex nervina L. P. Janeway 1988-7-29 3116 Butte Along Butte Cr where Humboldt Rd crosses near Cherry Hill. 1402 Comment
  CHSC44837  Carex nervina L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3147 Butte Along W Br Feather River, 1.5 mi along Humbug Summit Rd N of Philbrook Rd. 1584 Comment
  CHSC52243  Carex nudata L. P. Janeway 1988-4-10 2621 Butte North Honcut Creek at Dunstone Drive bridge at junction with Avocado Rd. 82 Comment
  CHSC52250  Carex nudata L. P. Janeway 1988-4-10 2619 Butte Along Clear Creek just north of Durham-Pentz Rd. 80 Comment
  CHSC77171  Carex nudata G. F. Hrusa; T. D. Wilfred 1997-5-1 13698 Butte The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 785 Comment
  JEPS116090  Carex nudata Lowell Ahart 2009-5-15 15708 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC105506  Carex pachycarpa Lowell Ahart 2010-9-21 17201 Butte Under red firs, about 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC88363  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. 59 Comment
  JEPS106524  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek 59 Comment
  CHSC102178  Carex praegracilis Lowell Ahart 2009-5-30 15789 Butte On dry soil, forming large dense colonies, meadow, about 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC87219  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale. 32 Comment
  JEPS98415  Carex praegracilis Lowell Ahart 2000-4-27 8331 Butte 6 air miles SE of Gridley (E side of Pennington Road, 100 ft N of Rutherford Road,); Gray Lodge Waterfowl Management Area 21 Comment
  SEINET7486528 Image available Carex subfusca Peter F. Zika 2009-6-17 24515 Butte below Concow Road 10 road miles above (N of) Route 70 1100 Comment
  UC1108037  Carex subfusca H. F. Copeland 1932-8-14 Butte Jonesville, woods below cabin Jonesville Comment
  JEPS117595  Carex utriculata Lowell Ahart 2010-9-28 17262 Butte About 50 yards east of the poor dirt road, about 20 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 1886 Comment
  SEINET10894839  Carex vernacula Lowell Ahart 2010-9-28 Ahart 17264 Butte T25N, R5E, northeast 1/4 Section 29. 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 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC98986  Carex vulpinoidea Lowell Ahart 2008-6-2 14805 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 50 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 243 Comment
  CHSC75551  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  CHSC91176  Carex xerophila L. P. Janeway 2005-5-29 8397 Butte Northern High Sierra Nevada. Isolated block of serpentine between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. 762 Comment
  HSC103679  Carex xerophila L. P. Janeway 2006-5-14 8595 Butte Northern High Sierra Nevada. 'Magalia Serpentine', east side of Coutolenc Road, between that road and the first bend in the road down to the 'Magalia 73 Dam'. 707 Comment
  CAS-BOT-BC248999  Castilleja A. A. Heller 1914-8-7 11658 Butte Summit back of Jonesville, on a north slope just below the crest of the ridge 2133 Comment
  CAS-BOT-BC249114  Castilleja affinis A. A. Heller 1919-4-12 13101 Butte Cherokee Mine Comment
  UCR133594  Castilleja applegatei H. F. Copeland 1927-9-2 952 Butte Jonesville 1524 Comment
  SBBG28928  Castilleja arachnoidea E. B. Copeland 1930-7-12 Butte above Jonesville, under N brow of ridge 2100 Comment
  CHSC65901  Castilleja attenuata Vernon H. Oswald 1996-4-19 7389 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  CHSC82292  Castilleja attenuata Lowell Ahart 2002-4-24 9530 Butte In a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC43555  Castilleja campestris subsp. campestris Lowell Ahart 1979-5-20 1885 Butte West of the Western Pacific Railroad, about 2 miles south of Palermo. 30 Comment
  SD234176  Castilleja exserta Virginia Pinkus Ryder 1965-4-3 363 Butte Table Mtns. 381 Comment
  CHSC109654  Castilleja exserta subsp. exserta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte Weedy field on the north side of the path, north of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC90143  Castilleja exserta subsp. exserta Andy Winkler 1980-4-15 13 Butte About 1/2 mi east of Hwy 99 Butte Creek bridge on the north side of Butte Creek. Comment
  CHSC30794  Castilleja lacera M. S. Taylor; J. D. Jokerst 1980-4-18 2533 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew, in Foothill Woodland. 518 Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  CHSC27266  Catalpa speciosa P. Moyer 1971-10-1 23 Butte CSUC campus. 50 ft. w of Esplanade Bridge, n side of Big Chico Ck. 60 Comment
  CHSC42003  Ceanothus cuneatus Lowell Ahart 1961-3-16 3 Butte At the Salmon Hole, Upper Bidwell Park, Chico. 91 Comment
  LA42059  Ceanothus cuneatus Carl B. Wolf; 1937-3-29 8338 Butte 7 8/10 mi. below Paradise on Chico Road 152 Comment
  SEINET10493633  Ceanothus cuneatus Mary Susan Taylor 1974-3-19 Taylor 87 Butte Along Butte Creek at Honey Run Covered Bridge, ca. 10 mi E of Chico. Comment
  CHSC81549  Ceanothus integerrimus Julie Rose 2000-4-25 89 Butte 6.8 miles on Hwy 32 East to Green Gate. At the beginning of the trail. 365 Comment
  CHSC30795  Ceanothus integerrimus var. californicus M. S. Taylor; J. D. Jokerst 1980-4-18 2538 Butte On bluffs on e side of Humbug Rd, ca. 2 mi ne of Centerville. 457 Comment
  CHSC38637  Ceanothus integerrimus var. macrothyrsus Vernon Oswald 1983-4-27 395 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd., ca. 200 ft e of Parking Area R (2.3 mi e of the power lines). 243 Comment
  RSA21541  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8727 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  RSA512835  Ceanothus lemmonii J. T. Howell 1975-6-15 51115 Butte Skyway near Billie Road, Paradise. 610 Comment
  SEINET10493644  Ceanothus lemmonii Mary Susan Taylor 1980-5-8 Taylor 2593 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SEINET10493643  Ceanothus lemmonii Mary Susan Taylor 1979-10-13 Taylor 2268 Butte T22N R4E se 1/4 sec 32. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 8.7 mi N of its jct with Concow Road, ca. 2 mi SE of Magalia. With Jim Jokerst. 945 Comment
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  UC725531  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte Comment
  UCD40397  Ceanothus prostratus Rodney Gale Myatt 1971-6-13 730 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  LA45120  Ceanothus velutinus E. B. Copeland; 1930-6-29 424 Butte Jonesville 1550.0 Comment
  CHSC31915  Centaurea calcitrapa M. S. Taylor 1980-8-30 3323 Butte In Potter Ravine along creek at dirt rd crossing betw. The High Rocks and Box Hall Flat, ca. 2 air mi e of Oregon City on Table mt, 9 mi n of Oroville. 304 Comment
  CAS-BOT-BC277028  Centaurea maculosa T. C. Fuller 1971-8-18 19925 Butte North side of overlook parking lot, Oroville Dam, 7 mi. east of Oroville 289 Comment
  CDA7276  Centaurea melitensis L. Ahart 2000-5-31 8414 Butte About 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. Comment
  CHSC111142  Centaurium tenuiflorum Lowell Ahart 2012-6-21 18212 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
  CHSC38448  Centaurium tenuiflorum Vernon Oswald 1983-6-7 643 Butte Upper Bidwell Park, Chico, ca. 400 ft n of Upper Park Rd. at Diversion Dam. 134 Comment
  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
  CHSC22563  Centromadia fitchii Robert A. Schlising 1973-10-14 3118 Butte Bidwell Park, Chico, ca 0.25 mi NE of jct Upper Park Road and Manzanita Avenue. Comment
  CHSC59505  Centromadia fitchii Lowell Ahart 1992-9-9 6921 Butte Below the high water line of Lake Oroville, about 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  CAS-BOT-BC288530  Centromadia fitchii Rimo Bacigalupi; G. T. Robbins 1955-7-15 5301 Butte 3.5 miles E of Chico and 0.5 mile S of the Hooker Oak 80 Comment
  UCD130186  Centromadia fitchii W. R. Powell 1968-11-12 1613 Butte Ellis Ranch, 200 yards north of La Porte Road, 4 miles southwest of Bangor. 91 Comment
  CHSC111743  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  CHSC38653  Cephalanthus occidentalis var. californicus Vernon Oswald 1983-6-20 717 Butte Upper Bidwell Park, Chico, 0.2 mi E of the end of the pavement on Upper Bidwell Rd. 91 Comment
  CHSC116136  Cerastium glomeratum Lowell Ahart 2015-11-7 20633 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CAS-BOT-BC388255  Cerastium glomeratum A. A. Heller 1915-5-28 11915 Butte Near Cohasset Comment
  CAS-BOT-BC179537  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte Plentiful in the canyon of Big Chico creek east of Chico. 68 Comment
  SEINET10452399  Cercis occidentalis Mary Susan Taylor 1975-4-25 Taylor 502 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  POM89488  Cercocarpus betuloides C. C. Bruce 1897-04 1817 Butte Big Chico Comment
  CHSC1541  Cercocarpus betuloides var. betuloides M. Roberson 1956-5-14 Butte SW Paradise, along Skway. 426 Comment
  LA203122  Chaenactis douglasii var. douglasii E. B. Copeland; 1931-7-6 692 Butte Jonesville 1900.0 Comment
  POM219485  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 692 Butte Jonesville 1900 Comment
  UC1586578  Chaenactis glabriuscula var. megacephala Vernon H. Oswald and Lowell Ahart 1991-6-5 4645 Butte ca 1.5 mi (air) nw Platt Mtn. Lookout (dirt road to Minnie-Ha-Ha Mine, located on Big Chico Creek, on the w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 701 Comment
  SEINET10483787  Chamaebatia foliolosa Mary Susan Taylor 1981-5-7 Taylor 3630 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  JEPS83932  Chamaesyce hooveri R. D. Stone 1986-7-15 750 Butte 10 mi se Chico (0.1 mi e of Hwy 99, 0.5 mi se of intersection with Pentz Rd); Esquon Lake 54 Comment
  CDA32012  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CDA34264  Chamaesyce maculata L. Ahart 2009-10-8 16414 Butte About 20 yards northeast of Parking Lot 12,Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  CHSC102511  Chamaesyce maculata Lowell Ahart 2009-8-13 16272 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC34126  Chamaesyce maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  JEPS113492  Chamaesyce maculata Lowell Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  RSA518698  Chamaesyce nutans L. Ahart 1990-9-30 6605 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 miles north of the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC102508  Chamaesyce ocellata Lowell Ahart 2009-5-30 16955 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 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
  CHSC47421  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1977-9-20 1579 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
  UC1562273  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-7-4 6542 Butte 1/5 mi sw Enterprise Bridge (near McCabe Creek, below high water line); Lake Oroville 243 Comment
  UC600557  Chamerion angustifolium subsp. circumvagum H. F. Copeland 1928-8-14 443 Butte on ridge above Jones Creek; Jonesville 1828 Comment
  CAS-BOT-BC69445  Cheilanthes gracillima A. A. Heller 1917-7-29 12852 Butte Summit of Jonesville. 2133 Comment
  CAS-BOT-BC69448  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  CHSC23659  Cheilanthes gracillima M. S. Taylor 1976-4-24 1069 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
  JEPS113223  Cheilanthes gracillima Lowell Ahart 2007-5-29 13931 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 585 Comment
  RSA712759  Cheilanthes gracillima L. P. Janeway 2005-5-29 8411 Butte Northern High Sierra Nevada, 0.2 kilometers of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  CHSC79987  Chenopodium album L. P. Janeway; B. Castro 1999-6-4 6456 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  SEINET10479092  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-3 Taylor 933 A Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  RSA724944  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CHSC60678  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-2-27 5231 Butte Near rimrock on the N side of the first canyon (unnamed) on the SE side of Neal Rd., just east of the double power transmission lines. 121 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
  CHSC1409  Chimaphila menziesii R. Carter 1964-5-16 100 Butte Feather R. Canyon, 1/4 mi. S of Cresta Power House on S side Hwy. 40A. 609 Comment
  CAS-BOT-BC451484  Chimaphila umbellata E. B. Copeland 1929-7-1 s.n. Butte Jonesville, along Butte Creek 1500 Comment
  UC474266  Chimaphila umbellata H. F. Copeland 1928-8-14 1002 Butte neighborhood Jonesville (on ridge above Scotch-John Creek) Comment
  CDA952  Chloris virgata D. G. Kelch 2006-8-2 6 .337 Butte Along Ord Ferry Rd. Comment
  CHSC40084  Chlorogalum angustifolium R. M. Austin 1896-5-1 737 Butte Comment
  CHSC44530  Chlorogalum angustifolium Lowell Ahart 1988-5-12 5986 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  UCD80425  Chlorogalum angustifolium CNPS SN Foothill Team 2005-5-3 SNFN 0197 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  CAS-BOT-BC498819  Chlorogalum pomeridianum John Thomas Howell 1962-6-15 37426 Butte Volcanic slopes, 4 miles from Paradise on road to Oroville 106 Comment
  CHSC39020  Chlorogalum pomeridianum var. pomeridianum J. D. Jokerst 1983-6-21 1818 Butte Top of North Table Mountain at north edge of Coal Cr Canyon. 304 Comment
  POM193562  Chorizanthe membranacea C. C. Bruce 1896-05 155 Butte Iron Canyon Comment
  RSA392754  Chorizanthe membranacea L. Ahart 1984-6-8 4678 Butte Along the dirt road near the water tower, above the generator, ca. 1 mile E of Ponderosa Dam, ca. 2 miles N of Forbestown. 475 Comment
  CHSC87571  Chorizanthe stellulata R. D. Fischer 2004-4-28 140 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. On top of Disk Golf Course near canyon edge and toward the middle of the course. 365 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
  UC478533  Chrysolepis sempervirens E. B. Copeland 1931-7-27 625 Butte Jonesville 1650 Comment
  SEINET10475251  Chrysopsis oregona var. compacta Mary Susan Taylor 1979-10-2 Taylor 2210 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CAS-BOT-BC279861  Cichorium intybus Lowell Ahart 1983-6-26 4125 Butte Along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. (Note: the sign gives Big Ridge Road instead of Ponderosa Way) 500 Comment
  CHSC40774  Circaea alpina subsp. pacifica Lowell Ahart 1985-7-9 5116 Butte Along Fall River, about 100 yards south of the bridge across Fall River. about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CAS-BOT-BC285278  Cirsium andersonii E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CHSC45659  Cirsium arvense Vernon Oswald 1987-7-29 3164 Butte 0.6 mi w of Coon Hollow Rd. on the dead-end spur road which parallels it on the south, ca. 2 mi (air) ne of Philbrook Reservoir. Roadside. 1783 Comment
  SEINET179234  Cirsium breweri E. B. Copeland 1930-7-28 488 Butte Jonesville 1600 Comment
  CDA1321  Cirsium occidentale var. candidissimum T. C. Fuller 1958-7-7 1908 -B Butte 1 mi. S of Pulga; roadside 0.1 mi. N of bridge over North Fork Feather River. 0 Comment
  CAS-BOT-BC438983  Cistanthe monosperma M. S. Taylor 1982-6-24 4743 Butte At Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CAS-BOT-BC228756  Cistanthe umbellata E. B. Copeland 1930-7-12 413 A Butte Above Jonesville 2000 Comment
  CAS-BOT-BC228759  Cistanthe umbellata Dr. Barton W. Evermann 1917-7-1 s.n. Butte Between Oroville & Chico Comment
  CHSC43549  Clarkia arcuata Lowell Ahart 1978-5-2 1710 Butte On slopes near the top of Table Mountain, near the large parking area near the top of Table Mountain, about 7 miles north of Oroville. 365 Comment
  UC725550  Clarkia arcuata A. A. Heller 1942-5-17 16475 Butte near where the road dips down toward Oroville (s end of the bare lava top of mountain); Table Mountain Comment
  CAS-BOT-BC164135  Clarkia concinna L. P. Janeway 1993-6-16 4390 Butte Upper east-facing slopes of North Fork Feather River Canyon; along Hwy 70 1.3 mi northeast of Jarbo Gap 670 Comment
  CHSC3329  Clarkia concinna subsp. concinna Robert L. Smith 1966-5-17 4 Butte Honey Run Rd., 3 miles W of Paradise. Comment
  CHSC48624  Clarkia concinna subsp. concinna Vernon Oswald 1985-5-23 1777 Butte Cohasset Rd. 0.4 mi uphill from Cohasset springs. On the road cut. 365 Comment
  CAS-BOT-BC164525  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-3 63 -54 Butte 12 miles northeast of Chico Comment
  CHSC48625  Clarkia gracilis subsp. albicaulis Vernon Oswald 1984-5-28 1210 Butte Cohasset Rd., 3.0 mi n-e of its jct. with Keefer Rd. Beside the road. 243 Comment
  RSA18617  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-6-12 8783 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  UCD104577  Clarkia mildrediae G. F. Hrusa; T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada. Plumas National Forest. Immed. S of Rogers Cow Camp on Highway 162. 1150 Comment
  HSC95510  Clarkia mildrediae L. Ahart 1997-7-11 7743 Butte Southeast of Cold Creek, 2 air mi. southwest of Bald Mountain, ~ 9 mi. by road from Stirling City, or ~ 2 air mi. northeast of Stirling City 1220 Comment
  CHSC73801  Clarkia mildrediae subsp. lutescens Ann Willyard 1997-7-16 Butte Ca 1.5 air mi S of Deer Park site on Rock Island Ridge, at E edge of USFS Rd 23N60 as it parallels Marble Creek, ca 0.5 air mi NE of its confluence with Little North Fork Feather River. On SW-facing roadcut ca 0.2 mi N of hairpin curve in road. 1143 Comment
  CHSC64117  Clarkia mosquinii L. P. Janeway 1993-7-12 4436 Butte Upper drainage of Berry Creek; along Rd 21N80 0.9 mi northwest of Zink Road. South-facing road cutbank at curve of the road. 853 Comment
  CHSC38566  Clarkia purpurea subsp. quadrivulnera Vernon Oswald 1983-5-14 479 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 292 Comment
  RSA448321  Clarkia purpurea subsp. viminea M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  JEPS87407  Clarkia rhomboidea Vernon H. Oswald and Lowell Ahart 1993-6-22 5554 Butte 2.1 mi n Doe Mill Rd. (Ponderosa Way) (Powellton Rd., n of De Sabla) 963 Comment
  CAS-BOT-BC164793  Clarkia rhomboidea Lowell Ahart 1984-5-28 4651 Butte Along Old Highway 40, now Dark Canyon Road, about 2 miles east of Old Yankee Hill, about 16 miles north-east of Oroville 450 Comment
  CAS-BOT-BC164801  Clarkia rhomboidea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River at junction with road to Las Plumas Comment
  SEINET10885379  Clarkia rhomboidea Mary Susan Taylor 1982-6-24 Taylor 4727 Butte T23N R5E center sec 30. Pulga SW quad. Forest opening on disturbed soild, e side of Flea Mt. ridge, ca 1 mile se of Flea Mt., 1.7 miles se of Ponderosa Way, ca 8.9 miles n of Jarbo Gap on Hwy 70. Mixed Evergreen Forest; 3600 feet. With Silene pratensis. 1095 Comment
  SEINET12194214  Clarkia rhomboidea L. Ahart, Ahart, P. 1984-1 4651 Butte On a large road cutbank along Hwy. 40, now called Dark Canyon Rd., ca 2 mi E of Old Yankee Hill; 450 Comment
  UCD104992  Clarkia rhomboidea L. P. Janeway 1995-7-16 4859 Butte 0.8 mile NW of Oak Point. 0.8 mile E of Transfer Ridge, E side of Breakneck Canyon. 1.5 miles N of West Branch Feather River. 1402 Comment
  CHSC35146  Clarkia unguiculata R. Schlising; R. Banchero 1980-6-6 3660 Butte N of Lake Oroville along Hwy 162, 1.9 miles N of Bidwell Bar Bridge crossing of the lake. Roadside bank. 304 Comment
  JEPS119802  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disc Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  CAS-BOT-BC439110  Claytonia exigua subsp. exigua A. A. Heller 1919-3-29 13094 Butte Feather River near Yankee Hill Comment
  CHSC43721  Claytonia palustris Vernon Oswald 1987-7-29 3163 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 Comment
  SEINET10572695  Claytonia parviflora Mary Susan Taylor 1980-5-8 Taylor 2614 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC109115  Claytonia parviflora subsp. parviflora Lowell Ahart 2012-3-23 17802 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC42410  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-6 5572 Butte On dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC98971  Claytonia parviflora subsp. parviflora Lowell Ahart 2008-5-8 14718 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC19934  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1975-3-10 380 Butte Abundant on s side of Butte Creek, ca. 30 ft s of Covered Bridge, ca. 8 mi e of Chico. Comment
  CHSC34700  Claytonia perfoliata subsp. perfoliata M. S. Taylor 1981-5-28 3807 A Butte Weedy on Valombroia St., e of its jct with Esplanade, Chico. 30 Comment
  CHSC2478  Clematis lasiantha W. Fitzwater 1958-4-12 Butte Foothills east of Chico. Comment
  RSA59594  Clematis lasiantha Verne Grant, Alva Grant 1950-7-15 8955 Butte 11 miles N of Chico on Hwy 32 Comment
  SEINET10476023  Clematis lasiantha Lowell Ahart 1988-11-27 Ahart 5946 Butte Chapparral Clematis. On dry red soil, along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap, Butte County, California. 425 Comment
  UCD95581  Clematis ligusticifolia L. and P. Alhart 1993-7-24 4215 Butte Western Virgin's Bower. At the Forbestown Reservoir, ca. 5 mi NE of Forbestown Reservoir, Yellow Pine Forest. 450 Comment
  CHSC51922  Collinsia heterophylla Kim Haas 1988-4-23 3 Butte Ca 20 ft S of Big Chico Cr, 6.0 mi NE of Chico. 131 Comment
  CHSC90230  Collinsia heterophylla Michael J. McNairn 1989-4-22 11 Butte On cliff s side of Big Chico Creek, S of golf course, 3/4 mi. e of 5-mile swimming area, Bidwell Park, E Chico. 79 Comment
  SFV3355  Collinsia heterophylla M. L. Vincent 1962-4-20 214 Butte Highway alternate 40. Feather River Canyon Road, 6 miles northeast of Oroville near site of Feather River Dam. Roadside. Comment
  UC600652  Collinsia parviflora H. F. Copeland 1931-6-11 Butte between Scotchjohn Creek and Willow Creek (Butte Creek Canyon, Jonesville); Jonesville, Butte Creek Canyon Comment
  UCD123647  Collinsia parviflora M. Vincent 1964-4-11 562 Butte Cherokee Road, beside the Campbell ranch 1/2 mile south of Cherokee. Comment
  JEPS11919  Collinsia sparsiflora F. W. Pennell 1940-6-5 25679 Butte 2 mi above Oroville (Route 24); Feather River 609 Comment
  CHSC39299  Collinsia tinctoria Lowell Ahart 1983-7-29 4249 Butte 2 miles east of Milsap Bar, about 25 miles north-east of Oroville. 1000 Comment
  CHSC44412  Collomia heterophylla Lowell Ahart 1988-5-30 6023 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC46361  Convolvulus arvensis Lowell Ahart 1989-5-23 6237 Butte Near a small stream, near a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC78072  Convolvulus arvensis Shelly Pirtie 1997-4-25 34 Butte 20 miles south of Chico off of Biggs-Afton Road: Little Dry Creek. Comment
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Jun 19 2009
  CDA13289  Corallorhiza maculata G. F. Hrusa, T. D. Wilfred 1996-7-9 13137 Butte Plumas National Forest; E of Jordan Creek near headwaters, S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC1742  Cordylanthus pilosus subsp. hansenii M. Underhill 1952-7-11 Butte Cohasset road. 91 Comment
  CHSC28383  Cordylanthus pilosus subsp. hansenii J. D. Jokerst 1979-10-13 386 Butte Jordan Hill Rd., 2.4 mi. N. of junction with Concow Cr. 609 Comment
  CHSC65538  Cordylanthus tenuis subsp. tenuis L. P. Janeway 1995-7-27 4879 Butte Near top of Jackson Ranch Ridge; ca 0.6 mi east of the western end of the ridge. 1139 Comment
  CHSC6030  Cornus alternifolia M. MacArthur 1968-6-19 230 Butte SE side Big Chico Creek near PSA bld. bridge, Chico State College. 60 Comment
  CHSC63246  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte In a small mountain meadow, south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles south-west of Forbestown. 609 Comment
  UC455443  Cornus nuttallii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS106219  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
  SEINET10836292  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC27207  Cotoneaster horizontalis P. Moyer 1971-11-7 55 Butte Front of Admin. Bldg. 60 Comment
  RSA0076091  Cotoneaster pannosus L. Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC77814  Cotula australis Lowell Ahart 2000-3-25 8323 Butte Waste area near the west side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  JEPS115291  Cotula australis Lowell Ahart 2009-3-9 15497 Butte At the home, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  RSA517004  Cotula coronopifolia Barbara Ertter, Lowell Ahart 1986-4-13 5903 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  CHSC31653  Crassula connata L. Ahart 1973-3-16 177 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10449717  Crassula muscosa Mary Susan Taylor 1980-4-16 Taylor 2492 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC31019  Crassula tillaea M. S. Taylor 1980-3-15 2381 Butte Ca. 1/4 mi s of Pentz Rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  CAS-BOT-BC290745  Crepis occidentalis subsp. occidentalis H. F. Copeland 1931-6-11 1532 Butte Jonesville. Near Butte Creek Meadows 1828 Comment
  POM29958  Crocidium multicaule C. C. Bruce 1897-03 2072 Butte [Unspecified] Comment
  CHSC46403  Crucianella angustifolia Lowell Ahart 1989-5-23 6252 Butte About 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC51286  Crypsis schoenoides Lowell Ahart 1990-9-30 6603 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC33258  Cryptantha affinis R. A. Schlising; R. Banchero 1980-6-17 3729 Butte N of Magalia and De Sabla, along Skyway, ca. 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  SD122567  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-6-10 4708 Butte Ca. 2 miles southwest of Forbestown Diversion Dam, northeast of Forbestown 700 Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  SEINET12328366  Cryptantha flaccida L. Ahart, Ahart, P. 1983-1 4119 Butte along Ponderosa Way (Big Ridge Road), ca 2 mi SE of the jct with Oroville-Quincy Hwy.. 500 Comment
  RSA32911  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  UC708007  Cryptantha intermedia McKee and Westover 1918-6-5 6 Butte Paradise 609 Comment
  POM264772  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte S Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  SBBG28777  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte N Fork of Feather River, 3 mi S of Pulga 609 Comment
  CHSC35069  Cryptantha torreyana R. A. Schlising 1981-7-14 4149 Butte NE part of county, near Humbug Summit, at Willow Creek and Meadow. 1950 Comment
  CHSC3601  Cupressus macnabiana Gerry Carrauthers 1966-3-6 44 Butte Ca. 1/4 mi N.E. of Magalia (city) train depot on Cautolenc Road. N. of city of Paradise. Comment
  JEPS94436  Cupressus macnabiana Lowell Ahart 1997-9-6 7884 Butte about 2 air mi ne of Concow Reservoir (at the McNab Cypress grove, near the steel tower power line, along sides of a logging road about 1/4 mi w of Rim Road); McNab Cypress grove 731 Comment
  CHSC41918  Cuscuta californica Lowell Ahart 1983-8-16 4282 Butte Along Humboldt Road, about 3 miles south-west of Butte Meadows. 1450 Comment
  CDA14092  Cuscuta californica var. californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13977 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC46288  Cuscuta howelliana Vernon Oswald 1989-5-17 3774 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  JEPS121237  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte NW of a large wash, about 0.5 mile SE of the Honcut Cemetery, about 3.24 air miles NE of Honcut. Comment
  SEINET12122113  Cymopterus terebinthinus var. californicus R. A. Schlising 1980-1 3666 Butte N part of county, along Humboldt Rd, 1.9 mi NE of junction with Hwy 32 at Lomo, Carpenter Ridge Comment
  SEINET10507349  Cynodon dactylon Mary Susan Taylor 1979-8-4 Taylor 2181 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
  CDA35770  Cynosurus echinatus J. R. Keck Jr. 1981-5-13 PDR# 237677 Butte Oroville. 0 Comment
  CHSC34198  Cyperus difformis J. D. Jokerst; L. Ahart 1981-9-26 1492 Butte Moist swale ca 110 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  UC1100549  Cyperus difformis Herbert L. Mason and Verne Grant 1946-8-14 13024 Butte canal near big pond on Sacramento Outing Club; Butte Sink Comment
  CHSC112331  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 Butte South side of North Honcut Creek, east of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC28865  Cyperus eragrostis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 432 Butte Along edges of first drainage north west of jct of east edge of Mt and Cherokee Rd. Top of North Table Mt. Comment
  CHSC37531  Cyperus eragrostis M. S. Taylor; L. Ahart 1982-10-11 5157 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
  JEPS104074  Cyperus eragrostis Lowell Ahart 2003-6-30 10329 Butte Near the small stream, on the w side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  UC1100532  Cyperus eragrostis Herbert L. Mason and Verne Grant 1946-8-15 13050 Butte #833 Irrigation Ditch near caretaker's house Greylodge Game Refuge; Butte Sink, Greylodge Game Refuge Comment
  UCSC000115  Cyperus eragrostis H. S. Yates 1936-8-19 6121 Butte 10 miles south of Durham - Chico 30 Comment
  CHSC34131  Cyperus erythrorhizos L. Ahart 1981-9-19 3191 Butte On the edges of a pond ca. 100 m n of the Cresta Powerhouse and a little e of the Feather River along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  CHSC43784  Cyperus erythrorhizos Vernon Oswald 1983-7-31 940 Butte Sacramento River ca. 0.25 mi downstream from Murphy's Slough (between Chico Creek and Rd. 29, Glenn Co.). Comment
  CHSC45158  Cyperus erythrorhizos Lowell Ahart 1974-11-9 671 Butte Near the edges of our drained rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1100468  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13023 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  UC698548  Cyperus erythrorhizos P. B. Kennedy Aug 9 1921-Aug 10 1921 Butte Comment
  CHSC43785  Cyperus esculentus Vernon Oswald 1987-7-23 3145 b Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CHSC34317  Cyperus flavescens L. Ahart 1981-9-6 3123 Butte In the rd gutter across the rd from the rest area just a little s of the Arch Rock tunnel on Hwy 70, ca. 4 mi n of Pulga. 500 Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  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
  CHSC42900  Cyperus niger Lowell Ahart 1987-7-3 5767 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
  CHSC68398  Cyperus niger L. P. Janeway; Patty Costello 1987-9-7 2579 Butte East side of City of Chico; along Forest Avenue between Little Chico Creek and East 20th Street. Along road at beginning of curb and gutter. 70 Comment
  JEPS110302  Cyperus niger Lowell Ahart 2006-9-13 13316 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  JEPS124350  Cyperus niger Lowell Ahart 2015-10-26 20598 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCD141197  Cyperus niger John Thomas Howell 1959-9-20 34639 Butte eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC113846  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mi NE of Kunkle Res., S of Paradise. 600 Comment
  CAS-BOT-BC113849  Cyperus niger var. capitatus Lowell Ahart 1980-7-29 2511 Butte Along Lower Forbestown Road. 750 Comment
  CAS-BOT-BC114082  Cyperus squarrosus Clarence Roy Quick 1963-7-16 63 54 c Butte Section Corner Meadow, E of Pulga. 1463 Comment
  SEINET7582975 Image available Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  UC1550  Cyperus squarrosus E. L. G. 1900-6-27 Butte Chico Comment
  CHSC68408  Cyperus strigosus L. P. Janeway; C. A. Janeway 1986-9-14 1865 Butte On bank along small slough/backwater of the Sacramento River at 'the washout. 36 Comment
  CHSC68412  Cyperus strigosus L. P. Janeway 1986-9-20 1881 Butte Bank along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  POM218971  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville, in woods by Butte Creek 1550 Comment
  SEINET11716735  Cystopteris fragilis M. S. Taylor, Jokerst, J. D.; Ahart, L. 1980-1 3203 Butte Humboldt Peak 2155 Comment
  CHSC23704  Darmera peltata M. S. Taylor 1976-5-5 1119 Butte Along Bear Creek, ca. 1/4 mi s of Hwy 70, by the waterfall, ca. 30 mi ne of Oroville. Comment
  CHSC29002  Darmera peltata M. S. Taylor 1980-3-19 2387 Butte In Macabes Creek, in Macabes Creek Canyon, ca. 100 ft e of Lumpkin Rd, ca. 2 1/2 mi n of its jct with Forbestown Rd, ca. 18 mi ne of Oroville. 396 Comment
  CHSC33371  Darmera peltata Steven Azevedo 1980-4-16 15 Butte Middle of Mud Creek, 1 mi. e of Richardson Spring. 243 Comment
  CHSC113117  Datura stramonium var. stramonium Lowell Ahart 2013-11-18 19278 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC31862  Daucus carota L. Ahart 1977-7-14 1467 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4562  Delphinium C. Glascock 1965-5-23 433 Butte Foothill Blvd 0.2 mi. e of its intersection with Oro-Bangor Hwy. Along roadside, Oroville. Comment
  UC726245  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte grassy slopes on Feather River Hwy 2 1/2 mi e Oroville Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  CHSC39537  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Found along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC34448  Delphinium nudicaule R. E. Preston 1982-2-4 163 Butte On cliff faces, s rim of Butte Creek Canyon above Honey Run Covered Bridge, ca. 7.5 mi e of Chico. 304 Comment
  JEPS115838  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA4642  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  UC600481  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte near north Willow Creek; Jonesville 1524 Comment
  UCR133595  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  POM225867  Delphinium nuttallianum J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  CHSC53295  Delphinium variegatum R. A. Emmrich 1975-4-20 81 Butte Cohasset Hwy ca. 10 yds e of roadside and 4 mi n of Chico. 60 Comment
  SEINET10536090  Delphinium variegatum f. superbum Mary Susan Taylor 1976-3-9 Taylor 1023 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC101129  Delphinium variegatum subsp. variegatum Lowell Ahart 2009-5-15 15702 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. 234 Comment
  CHSC2505  Delphinium variegatum subsp. variegatum W. Fitzwater 1958-4-12 Butte Plains on Oroville Hwy. between Oroville and Chico. Comment
  JEPS110321  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2006-7-25 13057 Butte In the west part of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC192658  Deschampsia danthonioides John Thomas Howell; Gordon H. True 1967-5-7 42175 Butte Northwest outskirts of Oroville north of the Feather River Comment
  CAS-BOT-BC192660  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Between Durham and Nelson Comment
  CAS-BOT-BC388457  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte Near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 400 Comment
  UCD14852  Dicentra formosa Tamara Kan 1991-5-11 16 Butte 28.3 miles N of the town of Oroville, along Route 70; 426 Comment
  CAS-BOT-BC402385  Dicentra formosa subsp. formosa E. B. Copeland 1929-7-22 364 Butte Jonesville 1500 Comment
  CHSC19650  Dicentra formosa subsp. oregana K. R. Stern 1966-3-31 Butte From Montreal Botanical Gardens; Planted in Chico. Comment
  UCD73058  Dichelostemma capitatum Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CAS-BOT-BC500055  Dichelostemma capitatum Ahart; Jokerst 1985-3-24 4864 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CAS-BOT-BC501082  Dichelostemma multiflorum H. C. Cantelow 1940-5-10 s.n. Butte 8 1/2 miles SW of Oroville on Highway 24 Comment
  CAS-BOT-BC501091  Dichelostemma multiflorum C. R. Quick 1941-6-8 41 -02 Butte About 2 miles south of Big Bar Mt. Comment
  RSA339162  Dichelostemma multiflorum Margaret J. Williams, Wayne Roderick 1984-5-25 84- 22 -4 Butte Magalia, near Skyline road to Paradise 168 Comment
  SEINET10866725  Dichelostemma multiflorum Charles C. Parry Parry s.n. Butte Chico Comment
  SEINET12044750  Dichelostemma multiflorum L. S. Rose 1937-1 37353 Butte Hurleton 579 Comment
  SEINET10533886  Dichelostemma volubile A. Arthur Heller 1915-4-20 Heller 11848 Butte Thickets in the digger pine and oak belt, 2 miles below Centerville in the Sierra foothills, associated with Ceanothus, Aesculus and Toxicodendron in the blue oak-digger pine belt, where it is rather common. Comment
  SEINET10496684  Dichondra donelliana Mary Susan Taylor 1980-5-24 Taylor 2739 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA39972  Dichondra micrantha William Hansell 1963-6-7 s.n. Butte 1 mile east of Quincy Road and 1 mile south of the Middle Fork of the Feather River on the west side of Bidwell Mountain; Hansell property, Route 4, box 4660. 0 Comment
  CAS-BOT-BC209034  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC150203  Diplacus John Thomas Howell 1967-6-22 42608 Butte Magalia 701 Comment
  CHSC44753  Diplacus douglasii R. Banchero 1980-3-9 59 Butte Ridge above Horseshoe Lake in upper Bidwell Park. 195 Comment
  CHSC101317  Diplacus grandiflorus Lowell Ahart 2009-4-22 15602 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC14058  Diplacus kelloggii J. Moore 1974-5-7 Butte Collected ca. 1 mi n of Jarboe Gap, on Hwy 70, n of Oroville. Comment
  CHSC43186  Diplacus kelloggii Leslie Steidl 1980-4-1 7 Butte On n side of Craig Access Rd, 2 mi nnw of Lumpkin Rd at boundary of State Park, ca. 18 mi e of Oroville. 316 Comment
  CHSC78271  Diplacus layneae Lowell Ahart 2000-6-27 8510 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET8370227  Diplacus tricolor Christine C. Lorain 1995-4-30 2270 Butte just E of Floral Road in the northern part of Chico. 61 Comment
  POM182759  Disporum hookeri var. hookeri Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC38811  Distichlis spicata Vernon Oswald 1983-6-2 612 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the flood plain of the creek. 207 Comment
  CDA43367  Dittrichia graveolens D. G. Kelch 2012-9-19 12 .356 Butte Oroville, immediately west of sewage treatment plant. Comment
  CHSC109851  Dittrichia graveolens L. P. Janeway 2012-11-14 11083 Butte Cascade Range Foothills. Along Skyway between Chico and Para-dise, 5.3 road km east of its bridge over Butte Creek; along inner edge of west-bound lane. 215 Comment
  CHSC3290  Dodecatheon clevelandii subsp. patulum M. L. Hillier 1966-2-21 Butte Old Oroville Chico rd. 3/4 miles w. of highway 99E along rd. side. Comment
  SEINET7072737  Downingia bacigalupii A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  HSC86818  Downingia bicornuta Andrew R. Shepard 1981-4-22 14 Butte About 15 mi. N of Chico and 900 ft. W of Singer Creek. 58 Comment
  RSA298986  Downingia bicornuta W. L. Jepson 1934-5-4 16605 Butte Pine Creek, near Sacramento River, 1 1/2 miles S of Nord. Comment
  UC220573  Downingia bicornuta var. bicornuta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2083 Butte near Chico Comment
  UC725779  Downingia bicornuta var. bicornuta A. A. Heller 1940-5-13 15617 a Butte 3 mi w Chico (on State Highway 32) Comment
  CHSC4645  Downingia cuspidata R. Carter 1966-4-21 348 Butte Found ca. 5 mi. NE of Oroville on top Table Mt., growing 20 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. in dry vernal pool. 274 Comment
  CHSC84254  Downingia cuspidata Lowell Ahart 2003-5-28 10227 Butte Center of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  POM305786  Downingia ornatissima C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  CHSC48331  Draba verna var. verna Vernon Oswald 1987-3-26 2296 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek near the entry gate. 71 Comment
  CHSC113503  Draperia systyla Lowell Ahart 2014-7-16 19671 Butte About 50 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  UCD124001  Drosera X obovata Barry Rice 2011-8-21 BR 110812 Butte Mallory Meadow. 1350 Comment
  CHSC62546  Drosera rotundifolia B. Castro; R. A. Schlising, L. P. Janeway, P. Broyles 1987-7-19 154 Butte Southernmost pond on slopes on south side of Coon ... Field redacted by CHSC, contact the data manager for more information 1767 Comment
  SD2057  Drosera rotundifolia E. B. Copeland 1930-7-25 Butte Jonesville 1500 Comment
  CAS-BOT-BC527355  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  UC114426  Drymocallis hansenii Mrs. R. M. Austin July, 1896 Butte Colby Comment
  JEPS110220  Dryopteris arguta Lowell Ahart 2006-5-19 12634 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
  CHSC41896  Dysphania ambrosioides Lowell Ahart 1974-12-5 682 Butte Near Pinkard Creek, along the dirt road, about 2 miles west of the Sly Creek Dam. 914 Comment
  JEPS124155  Dysphania botrys Lowell Ahart 2015-11-7 20617 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CHSC105958  Echinochloa colona Lowell Ahart 2010-9-24 17236 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC88925  Echinochloa colona Lowell Ahart 2004-9-14 11401 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 57 Comment
  CHSC110353  Echinochloa crus-galli B. Castro 2006-8-10 1595 Butte Sacramento Valley. Ca 2.5 mi W of hwy 99 and 1.2 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of dirt road which crosses Cherokee Canal just N of the Biggs canal. 102 Comment
  CHSC116150  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  JEPS120038  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. 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
  UC1254615  Echinochloa oryzicola Beecher Crampton 1963-9-9 6887 Butte 5 mi nw Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  UCD75790  Echinochloa oryzicola var. mutica Beecher Crampton 1963-9-9 6887 Butte 5 mi. NW Biggs, Biggs Rice Experiment Station. Comment
  RSA365246  Echinochloa oryzoides L. Ahart 1984-9-17 4792 A Butte Peter Ahart Ranch, ca. 2.3 mi. N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  CHSC10707  Echinodorus berteroi Lowell Ahart 1972-6-21 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC291137  Eclipta prostrata Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC291138  Eclipta prostrata Lowell Ahart 1981-9-26 3203 Butte Along the Sacramento River, ca. 6 mi. W of Chico 40 Comment
  CHSC115337  Elatine Lowell Ahart 2015-4-24 20067 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  JEPS123832  Elatine Lowell Ahart 2015-4-24 20067 Butte About 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS127222  Elatine Lowell Ahart 2016-8-5 21259 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET10447967  Elatine rubella Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4200 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC115279  Eleocharis acicularis Lowell Ahart 2015-4-24 20062 Butte Bottom of a large duck field, 50 yards south east of Parking Lot 1, about 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Freshwater Marsh. 19 Comment
  CHSC104846  Eleocharis acicularis var. acicularis Lowell Ahart 2010-6-9 16776 Butte 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CDA38954  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC113640  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-5-10 2225 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78286  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-17 8487 Butte In a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UC1564729  Eleocharis bella V. Oswald and L. Ahart 1989-7-21 3869 Butte 1 mi W of Jonesville (confluence of Willow and Colby Creeks, on W side of Colby Creek on N side of Humboldt Road) 1487 Comment
  CAS-BOT-BC113456  Eleocharis bella Lowell Ahart 1980-7-29 2510 Butte Along Lower Forbestown Road. 750 Comment
  CHSC78190  Eleocharis bolanderi Lowell Ahart 2000-6-4 8446 Butte In the small meadow south of the intersection of Black bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC94423  Eleocharis decumbens Lowell Ahart 2006-8-15 13177 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
  CHSC42715  Eleocharis engelmannii Lowell Ahart 1987-6-9 5724 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
  CAS-BOT-BC112793  Eleocharis macrostachya E. B. Copeland 1931-7-15 613 Butte In and beside the Lili Pond, a permanent pool, warm in summer. Jonesville. 1750 Comment
  CHSC117431  Eleocharis macrostachya Lowell Ahart 2016-5-30 20893 Butte North of Little Pump and along the north fence, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CHSC36972  Eleocharis macrostachya M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4368 Butte Graylodge Wildlife Refuge, s of parking lot 1, ca. 1/2 mi ne of Headquarters, ca. 12 mi sw of Gridley. 19 Comment
  CHSC78289  Eleocharis macrostachya Lowell Ahart 2000-6-17 8481 Butte In seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC68444  Eleocharis montevidensis L. P. Janeway 1986-10-19 1935 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  CHSC68445  Eleocharis montevidensis L. P. Janeway 1988-5-29 2705 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  SEINET10467262  Eleocharis quadrangulata Lowell Ahart 1991-9-14 Ahart 6722 Butte On the drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC78306  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte By the road culvert on the northwest side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS98442  Eleocharis quinqueflora Lowell Ahart 2000-5-27 8405 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  RSA699696  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast of Paradise Dam, about 4 mi. (air) southwest of Stirling City. 815 Comment
  CHSC44178  Elymus elymoides subsp. californicus V. Oswald; L. Ahart 1988-7-29 3640 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. On top of ridge. 2103 Comment
  JEPS94307  Elymus elymoides subsp. californicus Lowell Ahart 1997-8-1 7782 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  CHSC32760  Elymus glaucus J. D. Jokerst 1981-4-10 1286 Butte Top of North Table Mt, W edge ca. 150 met N of Cherokee Rd where it intersects the W edge of Mt. 335 Comment
  CHSC87922  Elymus glaucus subsp. glaucus Lowell Ahart 2004-5-27 10959 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC110479  Elymus multisetus P. Reisentz 1979-5-13 Butte Along roadside on State Highway 70, 9 miles south of Butte-Plumas County line. Comment
  CHSC31936  Elymus sierrae J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1033 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of county. 1828 Comment
  CHSC43290  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  CHSC49491  Elymus stebbinsii subsp. septentrionalis Vernon Oswald 1988-6-30 3543 Butte Humboldt Rd. (to Butte Meadows) 0.6 mi ne of Lomo. 1219 Comment
  CHSC96756  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2007-5-29 13936 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  JEPS103565  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 2002-6-21 9738 Butte 5 air mi N of Feather Falls (town) (poor dirt road, Watson Ridge, 2 air mi NE of Bald Rock Dome) 1086 Comment
  CHSC65411  Elytrigia intermedia subsp. intermedia Vernon Oswald 1987-7-29 3155 Butte Hwy 32, 1.5 mi ssw of Lomo. Roadside. 1146 Comment
  CAS-BOT-BC409189  Enemion occidentale A. A. Heller 1919-3-29 13093 Butte Feather river near Yankee Hill Comment
  CHSC23720  Enemion occidentale L. V. Ritter 1969-3-28 100 Butte N side of Wilenor Lake, ca .5 mi. e of dam. Comment
  CAS-BOT-BC410232  Enemion occidentale Flower Shaw 1926-4-24 s.n. Butte Los Verjils Comment
  SEINET11266286  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte U.S.D.A. Plant Introduction Station, Chico. Erect shrub without need of support, about 2 feet high.; 0 Comment
  SEINET10874040  Epilobium adenocaulon var. parishii Mary Susan Taylor 1979-8-4 Taylor 2180 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
  SD3257  Epilobium brevistylum E. B. Copeland 1929-7-25 Butte Jonesville. 1500 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
  JEPS119886  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  CHSC94617  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-11 13287 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
  CHSC111605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte The south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  CHSC40775  Epilobium densiflorum Lowell Ahart 1985-6-17 5058 Butte 100 yards south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 975 Comment
  CHSC65170  Epilobium densiflorum Lowell Ahart 1995-8-19 7609 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC84031  Epilobium densiflorum Lowell Ahart 2003-6-18 10288 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC84249  Epilobium densiflorum Lowell Ahart 1983-6-26 4120 Butte Found on the sides of a small stream along Ponderosa Way, about 2 miles south-east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  JEPS115272  Epilobium densiflorum Lowell Ahart 2009-6-30 15962 Butte West of Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 386 Comment
  JEPS119814  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 -A Butte On the south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. Comment
  RSA795667  Epilobium densiflorum L. Ahart 2012-8-12 18418 Butte South edge of North Honcut Creek, about 0.75 miles north and 2.5 miles east of Honcut, about 13 miles southeast of Oroville. 40 Comment
  UC873154  Epilobium densiflorum A. A. Heller 1914-7-13 11564 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  CHSC70344  Epilobium foliosum L. Ahart 1982-6-4 3536 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS117288  Epilobium hornemannii subsp. hornemannii Lowell Ahart 2010-9-21 17213 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CHSC38572  Epilobium minutum Vernon Oswald 1983-5-14 484 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the turn-around at the end of the jeep trail. 402 Comment
  CHSC90828  Epilobium minutum Lowell Ahart 2005-5-2 11764 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
  POM219517  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville, at the Summit 2000 Comment
  SEINET10453022  Epilobium obcordatum Mary Susan Taylor 1980-8-2 Taylor 3201 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC70345  Epilobium oregonense R. A. Schlising 1981-7-25 4167 Butte N part of county, E of Inskip, at Jones Meadow. At pond margin. 1842 Comment
  CHSC46148  Epilobium torreyi Lowell Ahart 1974-6-5 476 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC7140  Epilobium torreyi M. I. Moore 1969-4-22 12 Butte 20 ft. n of Pentz Rd., 200 yds. e of Hwy. 99. 76 Comment
  JEPS107758  Epilobium torreyi Lowell Ahart 2005-5-11 11795 Butte Swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 358 Comment
  SBBG126103  Epilobium torreyi L. Ahart 2012-6-5 18157 Butte dirt rd, on S side of Beatson Hollow, ca 0.75 mi NW of the iron gate on the N side of Cherokee Rd, N Table Mtn, ca 6 mi N of Oroville 298 Comment
  SFV2  Equisetum arvense M. L. Vincent 1962-4-15 180 Butte Sierra Nevada 1 mile south of Stirling City on the Skyway near small stream. 975 Comment
  UC600576  Equisetum arvense H. F. Copeland 1927-5-6 225 Butte Jonesville Comment
  CHSC94264  Equisetum laevigatum Lowell Ahart 2006-7-16 12984 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET4568214  Eragrostis chloromelas R. McKee 1907-8-18 13903 Butte Chico Comment
  UCD62963  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. Comment
  SEINET13711407  Eragrostis mexicana Lowell William Ahart, Lowell William Ahart 1999-1 8306 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Bank of Sacramento River Comment
  CDA34555  Eragrostis pectinacea var. pectinacea L. Ahart 2008-11-4 15405 Butte On the east edge of the paved road. about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. Comment
  JEPS103286  Eragrostis pectinacea var. pectinacea Lowell Ahart 2002-9-7 9928 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  SBBG115841  Eragrostis pilosa B. Crampton 1963-9-9 6884 Butte Honcut Comment
  JEPS122262  Eragrostis pilosa var. pilosa Lowell Ahart 2014-9-23 19872 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CAS-BOT-BC174176  Eremogone cliftonii M. S. Taylor 1981-5-21 3793 Butte N side of Mayaro Rd, ca. 0.5 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70 609 Comment
  CHSC35051  Eremogone cliftonii R. A. Schlising; R. Banchero 1980-5-12 3588 Butte Along North Fork of Feather River, 1.3 miles NE of Poe Power Dam and 2.9 miles S of Arch Rock along Hwy 70; roadside. 560 Comment
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Jul 8 2014
  CHSC48247  Eremogone cliftonii Vernon Oswald 1985-4-21 1713 Butte Between the WPRR and North Branch of the Feather River sw of Mayaro. 457 Comment
  CHSC92520  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-20 1218 Butte South of Middle Fork of Feather River. Along road 22N62. On the east side of the canyon. UTM 10 S 650834,4397612. 859 Comment
  CAS-BOT-BC168360  Eremogone ferrisiae Lowell Ahart 1983-7-29 4246 Butte 2 miles east of Milsap Bar, ca. 25 miles northeast of Oroville - Sutter Buttes Region 900 Comment
  UC1594625  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  CAS-BOT-BC291278  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  CHSC110126  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the rail-road tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Knoll flattened in mining rock long ago? 91 Comment
  CHSC38343  Erigeron divergens Vernon Oswald 1982-5-3 Butte Bidwell Park, Chico. Just below the north rim ca. 800 ft w of the power lines. 207 Comment
  JEPS87160  Erigeron divergens Lowell Ahart 1992-5-9 6757 Butte about 2.5 mi w Oroville Dam (on the n side of pool); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CAS-BOT-BC296824  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek Comment
  CHSC58252  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte Along Oregon Gulch, Lake Oroville Recreation Area, about 1 1/4 miles west of Oroville Dam. 91 Comment
  RSA32021  Erigeron foliosus var. hartwegii A. A. Heller 1940-6-5 15700 Butte Feather River Highway between the bridge crossing and the mouth of the West Branch Comment
  CAS-BOT-BC295419  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 s.n. Butte Jonesville 1550 Comment
  SBBG119820  Eriochloa acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy, ca. 20 ft S of Palermo Rd, E part of Palermo 57 Comment
  CHSC19919  Eriodictyon californicum M. S. Taylor 1975-2-16 385 Butte Ca. 2 mi s of Concow Reservoir on Jordan Hill Rd. Comment
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  CHSC679  Eriodictyon californicum A. Goekler 1928-4-25 Butte Bidwell Park 76 Comment
  CHSC82530  Eriodictyon californicum Tara Morgan 2002-4-23 30 Butte Found and collected while walking down the south rim trail that leads into Upper Bidwell Park from green gate off of Highway 32. The trail splits and the specimen was collected from the left split. 439 Comment
  RSA769683  Eriodictyon californicum L. Ahart 2009-4-22 15591 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
  CHSC29787  Eriogonum lobbii M. S. Taylor; R. S. Schlising, J. D. Jokerst 1980-6-14 2872 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CAS-BOT-BC259403  Eriogonum luteolum John Thomas Howell 1975-6-15 51075 Butte Butte Creek near Chico. (On Skyway btw. Chico & Paradise) 60 Comment
  NY282106  Eriogonum microthecum var. laxiflorum R. R. Halse 1988-8-13 3756 Butte Along U.S. Hwy 20/26, 3.3 miles northeast of the entrance to Craters of the Moon National Monument, at milepost 233. 1680 Comment
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Feb 29 2016
  CAS-BOT-BC261718  Eriogonum nudum var. oblongifolium A. A. Heller 1914-7-22 11585 Butte Little Summit near Butte Meadows 1463 Comment
  UC1594624  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte about 1/8 mi w Enterprise Boat Launch Ramp (below the high water line of Lake Oroville, about 3/4 mi sw of Rocky Point); Lake Oroville 243 Comment
  CHSC51893  Eriogonum umbellatum var. ahartii L. P. Janeway 1988-7-2 2966 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. 1219 Comment
  CHSC69427  Eriogonum umbellatum var. ahartii Lowel Ahart 1997-8-19 7870 Butte On the south side of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles (air) northeast of Feather Falls. 1280 Comment
  JEPS113301  Eriogonum umbellatum var. ahartii L. P. Janeway 2006-8-9 8836 Butte Northern High Sierra Nevada. Plumas National Forest; along the northwest edge of Mooreville Ridge 9.6 air km west-soutwest of La Porte. Comment
  RSA0048238  Eriogonum ursinum James R. Shevock 1972-5-19 1774 Butte Jarbo Pass, Feathr River Cyn., Hwy. 70. 1066 Comment
  CHSC30077  Eriogonum ursinum var. ursinum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3784 Butte Along Humboldt Rd., 1.9 mi NE of jct with Hwy 32 at Lomo; on open N and W-facing cliffs. Comment
  CHSC30843  Eriogonum ursinum var. ursinum M. S. Taylor; L. Ahart, J. Jokerst 1980-8-2 3218 Butte Humboldt Peak. 2154 Comment
  CHSC107454  Eriogonum vimineum Matt Simenc 2011-7-2 21 Butte Northern Sierra Nevada Foothills. 300 ft NW of intersection of Montgomery St. and Downer St. in Oroville. Between upper and lower parking lot near the Feather River, at top of slope in gravelly soil. 58 Comment
  CHSC33642  Eriogonum vimineum M. Merryman; D. Ikeda 1979-9-2 23 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 950 Comment
  UCD132181  Eriophyllum lanatum P. Thompson 1996-4-14 15 Butte Oroville, Cherokee Road, approximately 1 kilometer south of Oregon Road. 210 Comment
  CAS-BOT-BC308080  Eriophyllum lanatum var. achilleoides Clarence R. Quick 1964-7-9 64 -51 Butte North of Jarbo Gap, Sierra Nevada Comment
  CDA20457  Eriophyllum lanatum var. croceum B. Smith August 1996 s.n. Butte Plumas National Forest; 1.5 mi S of Feather Falls along Owl Creek. 0 Comment
  CAS-BOT-BC308155  Eriophyllum lanatum var. grandiflorum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC101283  Erodium botrys Lowell Ahart 2009-4-17 15561 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  JEPS115308  Erodium botrys Lowell Ahart 2009-4-17 15561 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC100985  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC101267  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC90247  Erodium cicutarium Robert Kissane 1989-4-20 11 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  UC762232  Erodium macrophyllum R. F. Hoover 1937-5-18 2230 Butte 2 mi s Nelson Comment
  UC176244  Erysimum capitatum A. A. Heller 1913-6-7 10826 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  CHSC4257  Erysimum capitatum var. capitatum J. E. Bowlin 1967-3-24 36 Butte Along roadside, Hwy 70 at Cresta Powerhouse. Comment
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC38699  Erythranthe floribunda Vernon Oswald 1983-3-31 244 Butte Upper Bidwell Park, Chico, near the diversion dam on Chico Creek (1.0 mi e of the power lines). 97 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CHSC27272  Erythranthe glaucescens P. Moyer 1972-4-16 173 Butte CSUC Campus. S. bank Chico Ck., e of Warner St. Bridge. 60 Comment
  CHSC44799  Erythranthe glaucescens R. Banchero 1980-3-15 63 Butte Along Cohasset Hwy 11.9 mi N of Chico, 5.6 mi NE of first jct of Cohasset Hwy and Rock Creek Rd. 323 Comment
  CHSC105164  Erythranthe guttata Christopher T. Ivey 2007-4-30 367 Butte Table Mountain, along small creek. 396 Comment
  CHSC116308  Erythranthe guttata Lowell Ahart 2015-11-18 20662 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC3884  Erythranthe guttata Gerry Carrauthers 1966-3-21 67 Butte Coal Canyon Rd. Ca. 15 mi S.E. of city of Chico. Comment
  CHSC94337  Erythranthe guttata Lowell Ahart 2006-7-25 13063 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC94687  Erythranthe guttata Lowell Ahart 2006-9-28 13373 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC84715  Erythranthe inconspicua L. P. Janeway; John Hunt, Adam Henderson 2003-6-17 7849 Butte Northern High Sierra Nevada. Along northwest edge of North Fork Feather River arm of Lake Oroville, at the mouth of French Creek. 280 Comment
  CAS-BOT-BC153576  Erythranthe moniliformis E. B. Copeland 1929-7-13 463 Butte Jonesville 1550 Comment
  CHSC44676  Erythranthe nasuta R. Banchero 1980-4-19 119 Butte Ca 0.7 mi directly NE of Feather Falls, ca 1.4 mi due N of the town of Feather Falls. 944 Comment
  CHSC44737  Erythranthe nasuta R. Banchero 1980-3-19 69 Butte Along the Skyway 5.5 mi E of Chico, Ca 6 mi SW of Paradise. 304 Comment
  SD7068  Erythranthe primuloides Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC43962  Erythranthe pulsiferae Vernon Oswald 1988-5-30 3347 Butte Humbug Rd. 1.0 mi s of Nimshew. 627 Comment
  CHSC2407  Erythronium multiscapideum R. Carter 1964-5-23 102 Butte Magalia, below outlet to reservoir. 731 Comment
  CAS-BOT-BC502809  Erythronium purpurascens Clarence R. Quick 1952-6-30 52 -103 Butte Ridge top, Big Bar Mountain east of Pulga Comment
  CHSC115442  Eschscholzia caespitosa M. Sutton; C. Yasuda, S. Luse 2013-4-9 21 Butte Centerville Flumes. 350 Comment
  CHSC42255  Eschscholzia caespitosa Kim Mc Kirahan 1986-4-19 16 Butte Ca. 12 m n of Big Chico Creek. 219 Comment
  CHSC76952  Eschscholzia californica Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  CHSC1203  Eschscholzia californica subsp. californica M. Anthony 1962-4-20 Butte Bidwell Park. 60 Comment
  CHSC85392  Eschscholzia lobbii John Dittes; Josephine Guardino 1992-5-7 482 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  UC1303106  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte near Hooker Oak (e of Chico) Comment
  CAS-BOT-BC419504  Eschscholzia lobbii A. A. Heller 1914-3-7 11188 Butte Hills 8 miles north of Oroville Comment
  SEINET12091626  Eschscholzia lobbii Unknown 1984-1 1 Butte ca 7 km WNW of Jct. of Hwy 149 and 70. Oroville Quadrangle, 15 ft., NE corner Sec. 17, T20N, R4E 402 Comment
  UC1609300  Eucephalus breweri Lowell Ahart 1993-9-8 7158 Butte about 1 mi e Snow Mountain (n side of ridge) 2072 Comment
  UCD142580  Euphorbia maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi. W of Chico. 40 Comment
  CDA19192  Euphorbia oblongata L. Pejsa 2001-5-16 PDR P 073954 Butte Sacramento Valley; at 2760 Mariposa, Chico. 0 Comment
  CAS-BOT-BC202422  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte About 3 miles east of Chico Comment
  RSA572325  Euphorbia ocellata var. ocellata Robert F. Hoover 1938-8-2 3718 Butte 7 miles southeast of Chico. Comment
  JEPS127201  Festuca microstachys var. pauciflora Lowell Ahart 2016-6-4 20935 Butte About 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  JEPS122213  Festuca myuros var. hirsuta Lowell Ahart 2014-4-25 19404 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CDA13232  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1996-7-8 13079 Butte Plumas National Forest; Uncommon perennial in shaded understory of conifer forest. Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  CHSC93102  Festuca occidentalis L. P. Janeway 1994-5-13 4645 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge. 1127 Comment
  CAS-BOT-BC278925  Festuca rubra Lowell Ahart 1987-7-8 5810 Butte Along Walker Plains Road, ca. 1/8 mi. N of Coyote Gap, ca. 5 mi. E of Pulga 1280 Comment
  UCD66372  Festuca rubra August L. Hormay 1929-6-27 Butte Chico Meadows. Comment
  CHSC77602  Ficus carica L. P. Janeway 2000-3-29 6642 Butte Sacramento Valley. In narrow riparian strip along Little Chico Creek at Salem Street in Chico. 60 Comment
  CHSC13519  Fragaria vesca A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  SEINET10970301  Fragaria vesca subsp. californica Mary Susan Taylor 1980-4-1 Taylor 2421 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  CHSC48837  Frangula purshiana Vernon Oswald 1987-6-29 3042 Butte Bald Mt., 1.1 mi (odometer) sw of the Lookout. 1645 Comment
  CHSC30894  Frangula rubra subsp. obtusissima M. S. Taylor 1980-9-12 3327 Butte W side of Hwy 32, ca. 3 mi. n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the hwy on dirt road. 975 Comment
  HSC102799  Fraxinus dipetala L. Ahart 2012-4-20 17896 Butte About 8.5 mi. NE of Chico, south part of Upper Bidwell Park; ~0.6 mi. west of Hwy. 32, west side of South Rim Trail 255 Comment
  JEPS120065  Fraxinus latifolia Lowell Ahart 2012-5-17 18086 Butte On the north side of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/10 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  RSA725003  Fraxinus latifolia L. Ahart 2006-9-11 13288 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
  CAS-BOT-BC205977  Fremontodendron decumbens Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  CHSC40036  Fritillaria affinis R. M. Austin 1896-2-1 Butte Near Chico. Comment
  CAS-BOT-BC130318  Fritillaria eastwoodiae Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC505284  Fritillaria micrantha Lowell Ahart 1980-3-26 2058 Butte Near Hurleton. Comment
  CAS-BOT-BC130428  Fritillaria pluriflora M. A. Wagner 1928-3-1 s.n. Butte Near Chico Comment
  UC683360  Fritillaria pluriflora W. B. Davis 1934-2-25 38 Butte near Richardson Springs Comment
  CHSC10766  Fritillaria recurva Lowell Ahart 1970-5-14 Butte Near Sly Creek, Gold Cup. 914 Comment
  CAS-BOT-BC508150  Fritillaria recurva A. A. Heller 1919-5-17 s.n. Butte Banks of the Feather river near Stirling Comment
  CHSC35216  Galium aparine M. S. Taylor 1981-5-14 3711 Butte N side of Four Mile Ridge, S of Sly Creek, ca. 1.5 mi NE of Mt House on Oroville-Quincy Hwy. 883 Comment
  SEINET10500698  Galium bolanderi Mary Susan Taylor 1978-7-21 Taylor 1801 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  CAS-BOT-BC124079  Galium grayanum var. grayanum Amos Arthur Heller 1914-8-7 11668 Butte Summit east of Jonesville 2133 Comment
  RSA715570  Galium murale L. Ahart 2005-4-14 11705 Butte At the base of the railroad roadbed. E side of the railroad tracks. S of the railroad bridge. N of Spruce Street. Gridley. 28 Comment
  SEINET10968829  Galium nuttallii Mary Susan Taylor 1979-3-20 Taylor 1940 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  JEPS98587  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  CHSC31921  Galium porrigens var. tenue M. S. Taylor; T. Devine, M. Merryman 1981-2-11 3380 Butte 20 ft E of Lumpkin Rd, on N side of Macabes Creek, ca. 2 mi N of jct of Lumpkin Road and Oroville-Quincy Hwy (162), ca. 13 mi NE of Oroville. 457 Comment
  CHSC45083  Galium porrigens var. tenue Chris Bradley; C. A. Bradley 1988-4-26 2 Butte Honey Run Rd., ca. 100 m from Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  SEINET10500744  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-9-12 Taylor 3332 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
  POM367830  Galium trifidum H. F. Copeland 1930-07 1393 Butte Jonesville. Comment
  CHSC26834  Galium trifidum var. pacificum M. S. Taylor; M. Hayes 1978-6-24 1638 Butte On Ernies Island in Butte creek at its jct with Old Humboldt Rd, ca. 1/2 mi W of Butte Meadows. Comment
  CHSC47484  Galium trifidum var. pacificum Lowell Ahart 1984-7-19 4750 Butte About 1 1/2 miles south-east of Bald Mountain, about 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1371 Comment
  UC1609077  Galium trifidum var. pusillum Lowell Ahart 1993-6-26 7017 Butte about 1/4 mi w Lost Creek Reservoir (small meadow n of dirt road) 1036 Comment
  POM193333  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville. 1500 Comment
  CHSC77979  Gamochaeta argyrinea Lowell Ahart 2000-5-13 8345 Butte On the margin of the Thermalito Afterbay, on the west side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC50649  Gamochaeta stachydifolia Lowell Ahart 1990-6-16 6523 Butte Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  UC1562451  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville) 30 Comment
  CHSC107395  Garrya fremontii Blake McSorley 2010-2-16 Butte Crownpoint Road and Hwy 32. 579 Comment
  CHSC108860  Garrya fremontii Lowell Ahart 2012-2-22 17755 Butte On the south side of Guardian Trail, about 20 yards west of Ten Mile House Road, about 1/4 mile west of High 32, about 9 miles northeast of Chico. 426 Comment
  CHSC40353  Garrya fremontii Lowell Ahart 1985-1-27 4835 Butte On a steep slope a little below the road, east of Magalia. 750 Comment
  CHSC48444  Garrya fremontii Vernon Oswald 1983-1-13 44 Butte Along Highway 32 ca. 8 mi n-e of Chico. 512 Comment
  CHSC85418  Garrya fremontii John Dittes 1992-5-5 470 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CAS-BOT-BC282602  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CHSC58286  Gastridium phleoides Lowell Ahart 1992-5-9 6755 Butte Along a dirt road, near homestead, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/2 miles west of Oroville Dam. 76 Comment
  CHSC109532  Gaultheria ovatifolia L. P. Janeway; Tom Carlberg, Linnea Hanson+ 2012-5-27 10825 Butte Northern High Sierra Nevada. Along the road to Sly Creek Reservoir dam, 0.9 road km west of the south end of the dam; overlooking the upper end of Lost Creek Reservoir from the south. 1035 Comment
  CHSC73415  Gaultheria ovatifolia B. Castro; L. Gehrung 1995-6-20 577 Butte Ca 4 air mi NE of Feather Falls, towards northeastern end of Watson Ridge, in N-trending ravine S of sharp bend in USFS Rd 22N24. 1173 Comment
  CHSC595  Gaultheria shallon A. Small 1953-6-15 Butte Ramsey Bar above Rag Dump. Comment
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  CDA38135  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. Comment
  SBBG119859  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte ca. 100 yards NE of the buildings in Butte Crk House Meadow, ca. 3 mi NE of Snag Lake, ca. 7 mi (air) E of Butte Meadows 1771 Comment
  CHSC3174  Genista monspessulana Robert D. Briggs 1966-4-23 RE- 129 Butte Mesquete Jct, Reservoir, 6 miles due north of Magalia. Comment
  CHSC26691  Gentianopsis simplex M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1495 Butte Meadow on s side of Humbug Rd, ca. 1 mi n of Snag Lake. 1828 Comment
  JEPS114965  Geranium carolinianum Lowell Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  RSA0028177  Geranium carolinianum L. Ahart 2012-4-30 17945 Butte South side of the path near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park. 81 Comment
  RSA0028180  Geranium carolinianum C. C. Bruce 1898-05 1937 Butte Little Chico Comment
  CHSC90960  Geranium dissectum Lowell Ahart 2005-4-14 11704 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  JEPS122280  Geranium dissectum Lowell Ahart 2014-4-9 19341 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CHSC101272  Geranium molle Lowell Ahart 2009-4-3 15530 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  SEINET10495127  Geranium molle Mary Susan Taylor 1980-5-27 Taylor 2644 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CDA31943  Geranium purpureum L. Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown Comment
  CHSC29381  Geum macrophyllum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-23 3763 Butte Near Strawberry Valley, 1.6 mi N of La Porte Road (=1.8 mi S of S end dam for Sly Cr. Res.). Roadside seep. Comment
  CHSC93994  Geum macrophyllum R. D. Fischer 2004-6-20 766 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found along stream edge downstream of pond. 1371 Comment
  POM65177  Gilia capitata subsp. pedemontana Copeland 1907-5-30 3277 Butte Chico. Comment
  SEINET12326974  Gilia tricolor L. D. Curtis 1982-1 31 Butte 88 Comment
  SBBG17367  Gilia tricolor subsp. tricolor M. Vincent 1961-3-29 10 Butte Skyway on rd from Paradise to Chico overlooking "Little Grand Cyn" Comment
  CHSC21741  Githopsis pulchella Robert A. Schlising 1964-6-11 2723 Butte Few miles south of Paradise along Honeyrun Road. Comment
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  JEPS110249  Glyceria declinata Lowell Ahart 2006-5-3 12564 Butte Banks of a small stream, near basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  CHSC116747  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  UCR143347  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville 1524 Comment
  POM222735  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville. Comment
  SEINET10474675  Gnaphalium palustre Lowell Ahart 1985-11-7 Ahart 5239 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10938059  Gnaphalium purpureum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4152 Butte T20N R5E nw sec 17. Along edge of Ponderosa Way (Big Ridge Rd), ca. 1.5 mi se of East Fork Canyon Creek, ca. 14.5 mi ne of Oroville. Foothill Woodland. 575 Comment
  JEPS103378  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 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
  CHSC34779  Grindelia camporum var. camporum L. Ahart 1981-11-6 3228 Butte Along edge of road that leads to Graylodge Waterfowl Mgmt HQ, ca. 1/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC24503  Hackelia californica M. S. Taylor 1976-6-28 1167 Butte Ca. 4 mi se of Jonesville, ca. 2 ft n of Scotts John Creek Rd. 1828 Comment
  CHSC51859  Hackelia californica L. P. Janeway 1988-6-25 2860 Butte Near Coon Cr and near Bull Hill Rd 1.0 mi from the Skyway. Near the creek. 1554 Comment
  JEPS105605  Hamamelis vernalis L. P. Janeway, John Hunt 2003-7-11 7898 Butte Northern High Sierra Nevada. Low in canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek 299 Comment
  CAS-BOT-BC302418  Hazardia whitneyi M. S. Taylor; J. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd (Ponderosa Way on some maps) 7.5 mi n of Concow Rd, 1 mi se of Sawmill Peak, little south of turnoff to Sawmill Peak lookout 944 Comment
  SEINET11842149  Hedypnois cretica R. A. Schlising 1980-1 3595 Butte N of Lake Oroville, along Nelson Bar Rd, 1 mi W of jct with Lunt Rd & 1.8 mi total W of jct Comment
  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
  CAS-BOT-BC306541  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC108145  Helenium puberulum Lowell Ahart 2011-8-17 17625 Butte About 40 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC66431  Helenium puberulum Vernon H. Oswald; Lowell Ahart 1996-6-10 7737 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
  JEPS115715  Helenium puberulum Lowell Ahart 2009-8-3 16258 Butte About 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET5554091  Helianthella californica H. S. Gentry 1962-1 19760 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  CAS-BOT-BC314757  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville 2150 Comment
  UCD146601  Helianthus bolanderi G. F. Hrusa; T. D. Wilfred 1997-7-3 13984 Butte above Little Butte Creek, north of Magalia. Immediately east of Holmwood Drive. 725 Comment
  UCR219090  Helianthus bolanderi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15581 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
  CHSC44375  Hemizonella minima Lowell Ahart 1988-6-29 6097 Butte Along a wash north of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 975 Comment
  CHSC46312  Hemizonia congesta subsp. clevelandii Vernon Oswald 1989-5-31 3794 Butte Wurlitzer Unit, Vina Plains Preserve. Near the nw corner of the Unit. 57 Comment
  CHSC45682  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1987-8-13 3219 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. By large vernal pool in field. 48 Comment
  RSA4485  Heracleum maximum E. B. Copeland 1930-6-29 665 Butte Jonesville. 1500 Comment
  CHSC33523  Herniaria hirsuta subsp. hirsuta R. A. Schlising 1981-7-11 4132 Butte NE of Oroville and NW of Brush Creek near French Creek Road crossing of French Creek. 613 Comment
  CHSC87190  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  JEPS105997  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  RSA0111936  Hesperocyparis macnabiana Lowell A. Ahart 2015-4-30 20117 Butte About 0.25 mile south of Forbestown Reservoir Road, about 2.5 miles (air) northeast of Forbestown. 890 Comment
  CAS-BOT-BC175992  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC176000  Hesperolinon californicum Lowell Ahart 1988-4-29 5962 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
  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
  RSA107430  Hesperolinon micranthum L. S. Rose 1955-6-15 55100 Butte 6 miles SE of Paradise on Pentz Road 427 Comment
  RSA285912  Heteranthera limosa T. C. Fuller 1969-8-19 18817 Butte Dodge Land, south side of Nelson West Road just east of Chico-Butte City Road. Comment
  CHSC51861  Heterocodon rariflorum L. P. Janeway 1988-6-19 2832 Butte 3.1 mi N of Stirling City Towards Inskip. Along loggins rd 0.2 mi W of the Skyway. 1219 Comment
  JEPS115569  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  JEPS117615  Heterocodon rariflorum Lowell Ahart 2010-6-9 16777 Butte Between the vernal pool and the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  SEINET7714837  Heterocodon rariflorum Unknown Butte Chico Comment
  CHSC23693  Heterotheca grandiflora M. S. Taylor 1976-5-5 1106 Butte On w side of Pentz-Magalia Rd, ca. 50 ft s of junc of Pentz-Magalia Rd and Pentz Rd, ca. 15 mi s of Chico. 121 Comment
  CHSC8127  Heterotheca grandiflora K. Henegar 1969-4-17 88 Butte At corner of Pentz and Pentz-Paradise Road. Comment
  JEPS103460  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC420456  Heuchera micrantha var. erubescens A. A. Heller 1913-6-7 10822 Butte W Branch of the N Fork of the Feather river near Stirling 914 Comment
  CAS-BOT-BC420459  Heuchera micrantha var. erubescens Lowell Ahart 1987-5-9 5596 Butte along Pulga Road, about 1/2 mile SW of Bardees Bar along the N Fork of the Feather River, about 3 miles SW of Pulga 365 Comment
  RSA0062970  Heuchera micrantha var. erubescens M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC109750  Hirschfeldia incana Lowell Ahart 2012-10-28 18533 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CAS-BOT-BC55329  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte At Bagor. 304 Comment
  UCD84911  Holcus lanatus Alva W. Mitchell 1958-6-6 s.n. Butte Irrigated pasture near Oroville. Comment
  UC1594728  Holodiscus discolor Lowell Ahart 1992-7-26 6842 Butte 2 air mi S of Snow Mountain (W side of a small stream 1/2 mi N of the Carr Mine) 1767 Comment
  RSA4243  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. 2000 Comment
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  CHSC27569  Hordeum marinum subsp. gussoneanum Robert Schlising 1978-5-17 3261 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC46105  Hordeum marinum subsp. gussoneanum L. Ahart; M. S. Taylor, J. D. Jokerst 1982-4-29 1537 Butte Grey Lodge Waterfowl Management Area, N. side of Rutherford Rd. ca 100 met. W. of Pennington Rd. Comment
  CHSC4305  Hordeum murinum subsp. leporinum J. Potter 1966-4-26 Butte Field corner Arcadian and W. Mansion Ave., Chico. Comment
  CAS-BOT-BC532317  Horkelia fusca var. parviflora Lowell Ahart 1984-7-19 2753 Butte About 1 1/2 miles South-east of Bald Mountain; 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. 1500 Comment
  CHSC26852  Hosackia oblongifolia var. oblongifolia M. S. Taylor; M. Hayes 1978-6-24 1640 Butte On Ernies Island in Butte creek, at tis jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC45901  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte Growing on moist granite soil, near the edges of small seeps, near Bean Creek Road, near the south side of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  RSA0045597  Hypericum anagalloides Lowell Ahart 2012-6-9 17575 Butte About 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  SEINET10839415  Hypericum anagalloides Mary Susan Taylor Taylor 321 Butte 61 Comment
  CHSC46359  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  POM135547  Hypericum concinnum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SFV2322  Hypericum concinnum B. Fuller 1962-5-23 s. n. Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  CHSC63821  Hypericum formosum var. scouleri S. C. Morey 1983-8-2 678 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  POM183154  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville. Comment
  CHSC58922  Hypericum mutilum Lowell Ahart 1992-7-23 6829 Butte Growing on wet soil on the north side of the Termalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  JEPS98550  Hypericum mutilum Lowell Ahart 2000-7-18 8602 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
  SBBG128029  Hypericum perforatum L. Ahart 2010-6-25 16841 Butte open pasture field, on the N sideof the improved parking area, ca. 100 yards N of the cattle chute and Cherokee Rd, N Table Mtn, ca. 7 mi N of Oroville 409 Comment
  CAS-BOT-BC401331  Hypericum scouleri A. A. Heller 1914-7-23 11599 Butte In Chico Meadows 1219 Comment
  CHSC108761  Hypochaeris glabra L. P. Janeway 2011-6-7 10368 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC363  Hypochaeris glabra M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC81246  Hypochaeris glabra J. Trizzino 2001-5-2 68 Butte North Table Mountain. 384 Comment
  JEPS119778  Ilex aquifolium Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 -A Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC46806  Ipomopsis aggregata subsp. formosissima R. A. Schlising; L. Janeway, B. Castro 1988-7-30 4646 Butte N part of county on Snow Mountain ridge. 2072 Comment
  POM195674  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  CAS-BOT-BC133555  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22525 Butte State Hwy. 32, 6.9 mi. S. from Lomo, at jct. with rd. from Butte Meadows 1036 Comment
  SEINET10227046  Iris hartwegii N. J. Fashing 1964-3-14 22 Butte n. side of Humbug Rd., ca. 10 yds off road and 5 mi. se. of Chico Comment
  CHSC23645  Iris macrosiphon M. S. Taylor 1976-4-4 1060 Butte S side of Ponderosa Way, ca. 3 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  RSA136503  Iris macrosiphon Lee W. Lenz, E. K. Balls 1955-5-13 20484 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  CDA43102  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada.; Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the upper end of Bald Rock Road. Comment
  CAS-BOT-BC69951  Isoetes bolanderi Vernon Oswald; Lowell Ahart 1987-7-1 3064 Butte Lily Pond located ca. 0.6 mi (air) w. of Butte Creek House and 0.25 mi. s. of Humbug Rd., ca. 2.75 mi. (air) se. of 1813 Comment
  CHSC71271  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte About 1/4 miles north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC61868  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte East branch of Potter Ravine, on the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam 350 Comment
  CHSC103698  Isoetes nuttallii Lowell Ahart 2010-5-14 16655 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC40399  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC60935  Isoetes nuttallii Lowell Ahart 1993-5-17 6945 Butte East side of Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 53 Comment
  RSA606518  Isoetes nuttallii Jon E. Keeley 1981-4-11 7547 A Butte On the SE side of Kunkle Res, ca 1 mile S of Paradise. 600 Comment
  CHSC61513  Isolepis setacea Lowell Ahart 1993-6-20 6975 Butte Along seep edges, about 1/2 mile south of Quartz Hill. 1219 Comment
  SEINET10475594  Isomeris arborea var. globosa Mary Susan Taylor 1982-8-28 Taylor 4377 Butte T17N R1E nw/sw 14. Pennington quad. Graylodge Wildlife Refuge, HQ center, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  SEINET10536079  Isopyrum occidentale Mary Susan Taylor 1980-4-6 Taylor 2460 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  CHSC111734  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte On the south side of Big Chico Creek, about 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC110011  Juncus Mrs. R. M. Austin 1883-1-1 s.n. Butte Unspecified. Comment
  CHSC112884  Juncus acuminatus Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.8 air mi E of Hwy 99, in N end of Thermalito Afterbay, ca 0.3 mi S of Tres Vias Rd. on E side of hill toward upper end of S-trending peninsula. 42 Comment
  CHSC37392  Juncus acuminatus R. A. Schlising 1980-8-31 3974 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
  JEPS115037  Juncus articulatus Lowell Ahart 2007-10-31 14511 Butte On the north side of North Honcut Creek, east of the cable across the creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville 40 Comment
  UC142375  Juncus bufonius E. B. Copeland 1903-5-30 3279 Butte Chico Comment
  CHSC96964  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14061 Butte Along swales, west of a high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  CHSC65354  Juncus bufonius var. occidentalis Lowell Ahart 1995-10-3 7672 Butte East of the dirt road, along a small branch of Willow Creek, about 1/2 mile west of Humbug Summit. 1981 Comment
  CHSC47543  Juncus capitatus Lowell Ahart 1983-5-12 3979 Butte Small vernal pools, near the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  CHSC115687  Juncus cyperoides Emily Meigs Doe 2015-5-11 27 Butte Northern High Sierra Nevada. Plumas National Forest. About 2 miles (air) NW of Forbestown. About 200 ft. SE of Rd. 19N19, approx. 0.82 mi. (air) NE of its intersection with Ponderosa Way. 768 Comment
  JEPS120831  Juncus cyperoides Lowell Ahart 2013-7-1 18820 Butte On the E side of Black Bart Road, about 3/4 mile by road SW from the intersection of Forbestown Road and Black Bart Road, 3.5 air miles SW of Forbestown. Comment
  CHSC50382  Juncus diffusissimus Vernon Oswald 1990-6-2 4280 Butte Oroville Wildlife Area on the northwest side of the Feather River, just upstream from the outlet of Thermalito Afterbay. 33 Comment
  JEPS114881  Juncus effusus subsp. effusus Lowell Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA795239  Juncus effusus subsp. pacificus L. Ahart 2011-8-23 17646 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 air miles northeast of Clipper Mills. 1134 Comment
  CDA37217  Juncus effusus var. exiguus CDFA Staff 2004-10-18 s.n. Butte Thermalito Afterbay. 0 Comment
  CDA42851  Juncus effusus var. pacificus L. Ahart 2011-8-19 17637 Butte About 30 yards east of Know-nothing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. Comment
  CHSC38921  Juncus ensifolius Vernon Oswald 1983-6-24 765 Butte Upper Bidwell Park, Chico, near the retaining wall at the e end of Centennial Ave. 85 Comment
  CHSC94340  Juncus ensifolius Lowell Ahart 2006-7-25 13058 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  RSA726663  Juncus ensifolius L. Ahart 2007-7-15 14303 Butte East side of Encina Grand Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 mile (air) west of Bloomer Hill. 809 Comment
  SEINET10472445  Juncus howellii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4749 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  UCSB63871  Juncus howellii Ahart, Lowell 1997-8-1 Butte on the bottom of Little Kimshew Creek; Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  JEPS108585  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Northern High Sierra Nevada. Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. Nest to small creeklet 969 Comment
  CAS-BOT-BC312663  Juncus leiospermus Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut 50 Comment
  UC1527280  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte about 2.25 mi n and 0.5 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch) 39 Comment
  CHSC83896  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  JEPS117320  Juncus leiospermus var. leiospermus Lowell Ahart 2010-5-22 16726 Butte About 100 yards east of Cherokee Road, about 200 yards northeast of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 385 Comment
  CHSC105517  Juncus mertensianus Lowell Ahart 2010-9-28 17259 Butte On wet humus, 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 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  CHSC94396  Juncus nevadensis Lowell Ahart 2006-8-15 13179 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
  CHSC96882  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill. 656 Comment
  CHSC2219  Juncus oxymeris I. Boyd 1949-5-19 Butte Near Chico. Along stream bank. 57 Comment
  CHSC31129  Juncus oxymeris L. Ahart 1980-7-4 2463 Butte In a small meadow near the jct of Forbestown Rd and Black Bart Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 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
  SEINET10472343  Juncus tenuis Lowell Ahart 1985-7-24 Ahart 5154 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  CHSC96965  Juncus trilocularis Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  UC1543891  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC96941  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley. 24 Comment
  RSA755034  Juncus usitatus L. Ahart 2009-6-18 15913 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 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
  CHSC3896  Juniperus californica Don Heinz 1967-2-12 Butte Collected at Butte Co. Dump, Neal Rd., ca. 7 mi. SE of Chico. 106 Comment
  NY21034  Juniperus californica A. A. Heller 1939-12-10 15486 Butte Neal Rd, 2 mi above the jct with the Oroville road 152.4 Comment
  SEINET10531637  Juniperus californica Mary Susan Taylor 1980-2-23 Taylor 2321 Butte T21N R2E SE section 11. In Foothill savannah, ca 15 m NW of Neal Road. ca 3 km E of Highway 99, ca 1.5 km E of Neal Road dump, ca 11 km S of Chico. Comment
  UC103069  Keckiella breviflora Mrs. R. M. Austin May 1896 65 Butte Iron Canyon Comment
  UC889317  Kelloggia galioides A. A. Heller 1917-7-29 12870 Butte summit above Jonesville 2133 Comment
  JEPS103538  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  SEINET10582525  Kickxia elatine Mary Susan Taylor 1978-9-8 Taylor 1895 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  CHSC64038  Kyhosia bolanderi S. C. Morey 1983-8-4 719 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC96358  Kyllinga brevifolia T. C. Fuller 1962-12-7 9952 Butte Sacramento Valley. 100 sq ft infestation in sun and semi-shade in lawn of Cynodon dactylon and Paspalum dilataum, 282 Chico Rd, Oroville. 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
  UCD133541  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  SFV4001  Lagophylla glandulosa M. L. Vincent 1960-9-7 112 Butte Sierra Nevada On dry bluff overlooking Butte Creek Canyon. 3 miles west of Paradise on the Skyway. 215 Comment
  CAS-BOT-BC341302  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CAS-BOT-BC341314  Lagophylla glandulosa David D. Keck 1932-7-2 1611 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  SFV3166  Lamium amplexicaule M. L. Vincent 1961-3-26 30 Butte Sierra Nevada Honey Run Road, near covered bridge over Butte Creek. Southwest of Paradise. 110 Comment
  CHSC101987  Lasthenia fremontii Richard A. Nichols 1980-8-18 4 Butte Ca. 50 yards north of jct of Skyway and Zanella Way, ca. 1.5 mi SE of Chico. 64 Comment
  CHSC10647  Lasthenia fremontii Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC354120  Lasthenia fremontii Ahart Lowell 1980-5-10 2222 Butte Valley Grassland. Peter Ahart Ranch, Honcut. 50 Comment
  UC725646  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte 1 mi n Rock Creek (along the road e of U.S. Highway #99E) Comment
  SEINET10484229  Lathyrus Mary Susan Taylor 1981-5-21 Taylor 3759 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC29843  Lathyrus hirsutus K. R. Stern 1980-6-22 6660 Butte S bank of Gold Run Creek, SE of Shippee Rd. 45 Comment
  CHSC29795  Lathyrus latifolius M. S. Taylor; J. D. Jokerst 1980-6-14 2881 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over the south fork Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  CHSC89010  Lathyrus latifolius H. Gray 2003-6-3 Butte Plumas National Forest. Milsap Bar Road. 762 Comment
  POM219421  Lathyrus nevadensis subsp. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  SEINET5327314  Lathyrus nuttallii R. McKee 1918-4-28 s.n. Butte Appleton Comment
  CAS-BOT-BC321762  Layia fremontii E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  CHSC3453  Layia fremontii Judy Potter 1966-3-21 Butte Roadside-Pentz Road 1 mile east of US 99E. Comment
  CHSC90592  Layia fremontii Jose Romero 1983-4-20 14 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi s.w. of Oroville. 45 Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  UC1124466  Lepechinia calycina A. E. Wieslander 1933-6-24 325 Butte Keefer Ridge 304 Comment
  CHSC46120  Lepidium didymum L. P. Janeway; B. Castro 1989-4-19 3225 Butte Campus of CSU, Chico; in city of Chico. Between Laxson Auditorium and Chico Cr. In lawn. 60 Comment
  CHSC112248  Lepidium strictum Lowell Ahart 2013-4-29 18654 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC90625  Lepidium strictum Sally A. Carter 1988-4-12 1 Butte South side of Little Butte Creek, about 8.8 mi east-southeast of Chico, 200 ft west of Honey Run Road. 160 Comment
  CHSC118871  Leptochloa fascicularis D. G. Kelch 2009-10-8 09 .663 Butte West of Lemoore, east of Lemoore NAS (Navel Air Station). Jackson Avenue, 1 kilometer east of Avenal Cutoff Road, south of Highway 198. Along river channel. 61 Comment
  UC1586517  Leptochloa fascicularis Lowell Ahart 1991-9-14 6721 Butte about 2 mi e Honcutt (margins of a large reservoir); Joie Osgood Ranch 45 Comment
  CHSC110334  Leptochloa fusca subsp. fascicularis B. Castro 2011-10-19 1915 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek ca 0.6 mi downstream (W) of its crossing under the Cohasset Hwy bridge and ca 500 ft E of its confluence with Sheep's Hollow. Depression in low flat floodplain on N side of channel, excavated and leveled in 2010 in a sediment removal project. 54 Comment
  CHSC41977  Leptochloa fusca subsp. uninervia Lowell Ahart 1986-11-14 5480 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
  POM74009  Leptosiphon androsaceus C. C. Bruce 1897-04 1966 Butte [No locality information provided] Comment
  CHSC67372  Leptosiphon bolanderi James D. Jokerst; R. A. Schlising 1985-4-8 2222 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  CHSC29379  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3686 Butte 4.6 mi s of Butte/Tehama County line on Hwy 32; roadside. Comment
  CHSC46393  Leptosiphon ciliatus Lowell Ahart 1989-5-10 6215 Butte Along a dirt road that leads to Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville, near Lake Oroville. 289 Comment
  JEPS120029  Lessingia nana Lowell Ahart 2012-8-22 18419 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 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
  CAS-BOT-BC341793  Lessingia nemaclada M. S. Taylor 1979-7-22 2170 Butte Pulga bridge, on n side of trail leading from ne side of Pulga bridge, over Hwy 70, ca. 27 mi n of Oroville 487 Comment
  SD8923  Lessingia nemaclada Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC84457  Lessingia virgata Lowell Ahart 2003-8-3 10464 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 60 Comment
  UCD134099  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 miles west of Oroville. 45 Comment
  CHSC36966  Leucanthemum maximum M. S. Taylor 1982-8-16 4998 Butte S end of Stirling City along both sides of the Skyway. 1036 Comment
  POM253222  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte Treeless summit of Table Mtn. Comment
  UCD101649  Lewisia rediviva Clyde L. Elmore 1962-4-8 27 Butte 100 feet south of Table Mountain road, northeast of Oroville. 365 Comment
  SD234157  Lewisia rediviva Virginia Pinkus Ryder 1965-4-3 353 Butte Sable Mtn. 381 Comment
  CHSC57134  Lewisia triphylla L. P. Janeway; R. A. Schlising 1988-7-22 3050 Butte Upper Coon Hollow; just below saddle between Coon Hollow and Chips Creek. 1920 Comment
  CDA13279  Ligusticum grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13127 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC42590  Ligusticum grayi Vernon Oswald 1985-7-2 1879 Butte Scotts John Rd. 0.6 mi n of the road connecting Humboldt and Humbug Rds. 1780 Comment
  CDA43061  Ligustrum sinense L. P. Janeway, B. Castro 2010-6-4 9993 Butte Sacramento Valley.; Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and Centennial Ave. Comment
  SD6538  Lilium Unknown 1882-7-14 Butte Sutton House. Comment
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Jul 3 2010
  UC478546  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CHSC24944  Limnanthes alba M. L. McCrum 1976-4-26 18 Butte Ca. 6.0 mi sw of Cohasset on Cohasset Rd., .25 mi e on dirt rd. 365 Comment
  JEPS103417  Limnanthes alba subsp. alba Lowell Ahart 2002-4-24 9528 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
  CHSC35708  Limnanthes alba subsp. versicolor J. D. Jokerst 1982-5-19 1576 Butte Top of Lumpkin Ridge 2 mi E of Camp 18, at the S edge of the ridge. 1280 Comment
  CHSC1011  Limnanthes douglasii subsp. rosea P. Delaplane 1965-3-23 42 Butte H. Wurlitzer Ranch; ca. 13 mi NW of Chico. W. of Hwy 99E N. 60 Comment
  CHSC3540  Limnanthes douglasii subsp. rosea John Francis 1966-3-21 80 Butte 0.7 mile N. of intersection of Pentz Rd. and Hwy. 99E (on Pentz Rd.). Beside road. Comment
  SBBG17309  Limnanthes douglasii subsp. rosea M. Vincent 1962-4-17 203 Butte Cherokee Rd near Table Mtn Comment
  CHSC55507  Limnanthes floccosa subsp. californica Pat Kelly 1991-3-31 Butte Arroyo Chico.' On the north side of the southern branch of Sycamore Creek opposite the mouth of the Diversion Channel. 74 Comment
  CHSC67550  Limnanthes floccosa subsp. californica James D. Jokerst 1980-3-12 471 Butte E of Cohasset Hwy. at Chico Municipal Airport. 64 Comment
  UC971878  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1255 Butte 8 mi nw Oroville (along the Oroville-Chico road, near a large asphalt area marked Bombing Range) Comment
  UCD19360  Limnophila X ludoviciana E. Dean; with J. Ditomaso and E. Healy 2001-8-20 851 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, by dirt turnout half way between first two dirt roads that enter rice fields on the N side of the road. Turnout leads to walking path. 30 Comment
  JEPS123907  Limosella acaulis Lowell Ahart 2015-4-24 20068 Butte About 3/4 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS103303  Limosella aquatica Lowell Ahart 2002-4-14 9483 Butte Area between the Railroad and the Midway Road, 50 yards S of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS115836  Linanthus bicolor Lowell Ahart 2009-4-22 15585 Butte Along the Guardians Trail, just south side of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UC718541  Linanthus bolanderi Carl B. Wolf 1937-3-29 Butte 7.8 mi below Paradise (on Chico Road); Sierra Nevada Foothills 152 Comment
  SEINET12319547  Linanthus ciliatus Unknown 1970-1 57 Butte 2.3 mi on Upper Park Rd, Bidwell Park, Chico Comment
  JEPS98369  Linanthus filipes Lowell Ahart 2000-6-27 8526 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  SEINET7072745  Linanthus filipes A. G. Vestal 1963-5-9 s.n. Butte About 3.5 miles north of Oroville. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 623209mE, 4374845mN. Coordinate datum: NAD 27.) Comment
  CHSC42119  Lindernia dubia Lowell Ahart 1986-11-9 5443 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC42116  Lindernia dubia var. anagallidea Lowell Ahart 1986-11-9 5444 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC78155  Linum bienne Lowell Ahart 2000-5-21 8375 Butte On the north margin of Table Mountain Boulevard, about 300 yards southeast of Garden Drive, about 1/10 mile northwest of the Thermalito Diversion cut, about 2 mile north of Oroville. 67 Comment
  SEINET10533521  Liquidambar styraciflua Mary Susan Taylor 1975-5-6 Taylor 563 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  UC1594679  Listera convallarioides Lowell Ahart 1992-6-26 6780 Butte about 1/2 mi nw Merrimac (e side of camp); Rogers Cow Camp 1219 Comment
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way andRoad 19N19. 701 Comment
  POM219578  Lithophragma bolanderi H. F. Copeland 1923-3-16 47 Butte [Unspecified] Comment
  CAS-BOT-BC432265  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  CHSC48896  Lithophragma glabrum Vernon Oswald; Lowell Ahart 1987-5-14 2397 Butte Road paralleling Scotts John Creek, 0.6 mi n of the road connecting Humboldt and Humbug Roads. 1780 Comment
  SEINET12216581  Lithophragma parviflorum P. D. Nelson 1979-1 s.n. Butte Table Mountain, ca 200 ft W of Cherokee-Mountain Rd, ca 6 mi N of Oroville 381 Comment
  CHSC12190  Lithophragma parviflorum var. trifoliatum Lowell Ahart 1973-4-15 190 Butte Swedes Flat Road, Bangor. 304 Comment
  CHSC33697  Lithophragma parviflorum var. trifoliatum L. Ahart 1981-4-9 2754 Butte Peter Ahart Ranch. Under oak trees along banks of North Honcut Creek, ca. 1 mi n and 3 mi e of Honcut. 213 Comment
  CHSC90837  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  CHSC26786  Logfia gallica M. S. Taylor 1978-5-6 1623 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  CHSC38350  Logfia gallica Vernon Oswald 1983-4-25 390 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  CAS-BOT-BC342381  Logfia gallica Lowell Ahart 1989-5-10 6226 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville 280 Comment
  SEINET241452 Image available Lolium multiflorum A. A. Heller 11420 Butte 8 miles north of Oroville 2 Comment
  UC726873  Lomatium caruifolium var. denticulatum A. A. Heller 1941-4-14 16065 Butte 4 mi. n. Biggs (along U.S. Hwy. 99E) Comment
  UC765514  Lomatium caruifolium var. denticulatum R. F. Hoover 1937-5-18 2238 Butte 3 mi. n. Chico Comment
  CHSC90624  Lomatium dasycarpum subsp. tomentosum Steven H. Roth 1980-4-25 17 Butte 50 m north of Big Chico Creek at Diversion Dam in Upper Bidwell Park, Chico. Comment
  CHSC109005  Lomatium macrocarpum Lowell Ahart 2012-4-20 17897 Butte Cliffs, below the rim, on the west side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CHSC10576  Lonicera interrupta Lowell Ahart 1969-5-26 Butte Swede's Flat Road, near Bangor. 304 Comment
  JEPS87385  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  UC1562314  Lotus grandiflorus var. macranthus Vernon Oswald and Lowell Ahart 1990-6-27 4324 Butte ca 0.5 mi (air) nne Junction House (Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, e side of Oro-Quincy Hwy) 1097 Comment
  CHSC103674  Lotus humistratus Lowell Ahart 2010-4-30 16594 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  RSA169437  Lotus humistratus L. S. Rose 1963-6-2 63076 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  SEINET12161339  Lotus humistratus S. M. Grossberg 1978-1 12 Butte ca .5miWNW of Hwy 32, 9.2miNE of Chico 366 Comment
  SEINET10452366  Lotus micranthus Mary Susan Taylor 1974-4-20 Taylor 180 Butte Ca. 10 yds W of roadside, Richardson Springs, ca. 6 mi N of Chico. Comment
  SEINET10871197  Lotus purshianus Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7022 Butte 2.6 mi w of paradise on chico road. 610 Comment
  RSA769807  Lotus purshianus var. purshianus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  SEINET12165110  Lotus scoparius L. Ahart, Ahart, P. 1984-1 4691 Butte ca 1miSE of Hurleton, 1/12miE of Oak Grove Cemetary, ca 10miE of Oroville 500 Comment
  UC1562315  Lotus stipularis Vernon Oswald and Lowell Ahart 1990-6-27 4334 Butte 0.5 mi n Coyote Gap (Four Trees Rd) 1341 Comment
  CDA5220  Ludwigia uruguayensis L. Ahart 2000-7-18 8601 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  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
  RSA0065261  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  CHSC115452  Lupinus albifrons M. Sutton; C. Yasuda, S. Luse 2013-4-9 23 Butte Centerville Flumes. 350 Comment
  SEINET12161341  Lupinus albifrons T. E. Lewis 1978-1 5 Butte on Magalia Hwy, E side of rd ca 50 m S of Pent Rd jct, ca 11km S of Paradise 270 Comment
  CAS-BOT-BC201358  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-16 49114 Butte Harts Mills - Brush Creek Road Comment
  JEPS124247  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte About one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. Comment
  UC1713209  Lupinus arbustus Brandegee 1882-7-14 134 Butte Sutton House Comment
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Jul 3 2010
  SEINET10452071  Lupinus densiflorus Mary Susan Taylor 1976-4-27 Taylor 1097 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  SEINET10485236  Lupinus densiflorus var. lacteus W. E. Hartman 1972-4-29 Hartman 7 Butte Corolla white; fls fragrant. Locally abundant on cliff by centerville rd. .6 Mi. N of centerville cemetary. Rocky, sandy loam. Assoc: trifolium Tridentatum. 244 Comment
  JEPS87384  Lupinus grayi Lowell Ahart 1993-6-26 7023 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge); , w of the Lost Creek Reservoir 1188 Comment
  CHSC87808  Lupinus latifolius var. columbianus Paul Maslin 2004-4-21 25 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  JEPS115619  Lupinus microcarpus var. densiflorus Lowell Ahart 2009-5-15 15703 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 234 Comment
  JEPS18176  Lupinus nanus Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5609 Butte along road to Oroville from Cherokee 3.5 mi n Cherokee (at top of descent into North Fork Feather River Canyon); top of descent into North Fork Feather River Canyon 396 Comment
  UC725745  Lupinus nanus A. A. Heller 1939-3-23 15355 Butte Berkeley Olive Orchard Comment
  UCSB63593  Lupinus nanus Hill, Leonard 1991-3-6 Butte Upper Bidwell Park, Chico; from Manzanita Ave., E 4 mi. on Wildwood Ave., S of road, near cliff edge 106 Comment
  CHSC38507  Lupinus nanus var. apricus Vernon Oswald 1983-3-23 203 Butte Upper Bidwell Park, Chico near the N boundary between the Omicron Enclosure and the low swale to the east. 88 Comment
  CHSC103726  Lupinus nanus var. vallicola Lowell Ahart 2010-5-16 16679 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  JEPS124190  Lupinus pachylobus Lowell Ahart 2015-3-24 19960 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC31378  Lupinus polycarpus J. D. Jokerst 1979-4-20 1203 Butte Open grasslands of North Table Mt., ca 200 met. N of Cherokee Rd at the E edge of the mountain. 403 Comment
  CHSC31811  Lupinus polycarpus L. Ahart 1978-5-1 1686 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC25003  Lupinus polyphyllus var. burkei E. B. Copeland 1930-7-11 422 Butte Jonesville. 1500 Comment
  POM24970  Lupinus succulentus C. C. Bruce 1898-05 2454 Butte Sacramento River. Comment
  HSC23497  Lupinus vallicola L. E. Dunkel 1965-3-2 2 Butte .5 mi. SW of Municipal Golf Course building, Chico 61 Comment
  RSA0069567  Lupinus vallicola var. apricus Daisie Huang 2006-8-3 06080304 Butte Butte County. 1124 Comment
  CHSC52710  Luzula cascadensis L. P. Janeway 1988-6-25 2868 Butte Near Coon Creek and near Bull Hill Road 1.0 mi from Skyway. On gravel bar along small creek (Coon Cr). 1554 Comment
  CHSC41445  Luzula comosa var. laxa Lowell Ahart 1986-7-2 5341 Butte In a small meadow, north of the dirt road, 1/2 mile southwest of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  UC600796  Luzula comosa var. laxa H. F. Copeland 1930-7-25 Butte Jonesville Comment
  JEPS113268  Luzula comosa var. subsessilis Lowell Ahart 2007-4-30 13705 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CAS-BOT-BC499136  Luzula macrantha Peter F. Zika 2012-5-16 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Los Creek Reservoir 1020 Comment
  CDA31936  Lychnis coronaria L. Ahart 2009-6-13 14826 Butte Banks of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 air miles northeast of Oroville. Comment
  CHSC51367  Lycopus americanus Vernon Oswald 1990-8-14 4435 Butte Kunkle Reservoir on the east side of Pentz-Magalia Hwy south of Paradise. Along the edge of the reservoir on the north side of the dam. 441 Comment
  CHSC46308  Lythrum californicum Vernon Oswald 1989-5-23 3780 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC104856  Lythrum hyssopifolia Lowell Ahart 2010-6-9 16780 Butte On the east side of vernal pool full of dodder, about 30 yards south of the poor dirt road, about 60 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  JEPS117550  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  RSA180583  Lythrum salicaria L heinrichs 1965-7-5 s.n. Butte Butte County: roadside ditch, Pacific high road & state Hwy 70 (Hwy 40ft) to Marysville, 2.5 miles S of Oroville. Comment
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Sep 11 2012
  CHSC84026  Lythrum tribracteatum Lowell Ahart 2003-6-23 10311 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  SFV4039  Madia citriodora M. L. Vincent 1960-9-8 91 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  SEINET3450906  Madia elegans Unknown 2003-6-30 10321 Butte Forbestown, Forbestown, about 2 miles air northwest, east side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  CHSC38378  Madia elegans subsp. densifolia Vernon Oswald 1983-6-20 725 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. Near Chico Creek. 207 Comment
  CHSC62714  Madia elegans subsp. elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  CHSC76036  Madia elegans subsp. elegans G. F. Hrusa; T. D. Wilfred 1996-7-9 13172 Butte Sierra Nevada. Plumas National Forest. At S end of 22N12X. Approx. 0.5 m. on 22N89 and 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. [Original Lat./Long. on label is '39 45 N; 121 18 W']. 1100 Comment
  CHSC103957  Madia exigua Lowell Ahart 2010-5-23 16737 Butte On the north side of Guardians Trail, about 50 yards southwest of a small drainage, about 50 yards southwest of Pine trail, about 80 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC44374  Madia exigua Lowell Ahart 1988-6-23 6068 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC62715  Madia exigua L. P. Janeway 1993-6-9 4377 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. Slope above French Creek. Edge of dirt road. 621 Comment
  RSA755762  Madia exigua L. Ahart 2009-5-23 15757 Butte South side of Guardians Trail, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  RSA774146  Madia glomerata L. Ahart 2010-9-21 17223 Butte Open area along poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CAS-BOT-BC342970  Madia gracilis John Thomas Howell 1967-6-22 42632 Butte Magalia 701 Comment
  CHSC31572  Madia gracilis L. Ahart 1978-5-30 1744 Butte On dredger piles near North Honcut Creek. Ca. 3 mi ne of Honcut. 50 Comment
  RSA0035822  Madia rammii Lowell A. Ahart 2008-6-13 14823 Butte About 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET10474828  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2672 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC6014  Magnolia M. MacArthur 1968-6-19 269 Butte NE end of PSA bld., Chico State College. 60 Comment
  CHSC27984  Maianthemum racemosum M. S. Taylor 1978-7-18 1700 Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  CAS-BOT-BC510730  Maianthemum racemosum subsp. amplexicaule H. F. Copeland 1916-11-29 1236 Butte Woods near Butte Creek. Comment
  CAS-BOT-BC347376  Malacothrix floccifera Clarence R. Quick 1952-7-1 52 -128 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  POM37684  Malacothrix floccifera C. C. Bruce 1898-05 2465 Butte Doe mill ridge Comment
  SJSU15293  Marah fabacea Lisa Morton 2002-3-23 3 Butte Bidwell River Park, Intersection of W. Sacramento and River Roads 40 Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC116981  Marrubium vulgare Matthew Forster 2013-5-7 Butte Lower Bidwell Park, along bike path just east of Hwy. 99. 65 Comment
  CHSC38473  Marrubium vulgare Vernon Oswald 1983-5-2 420 Butte Upper Bidwell Park, Chico, along the s edge of the Golf Course. 91 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
  UC865635  Medicago arabica A. A. Heller 1915-5-2 11864 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  CHSC61918  Medicago lupulina Lowell Ahart 1993-11-1 7274 Butte On the banks of an irrigation ditch, on the Rice Experiment Station, on the south side of Butte City Highway, east of the Southern Pacific Railroad, west of Riceton Road, about 3 1/4 miles north-west of Biggs. 30 Comment
  CHSC31876  Medicago polymorpha L. Ahart 1976-5-2 1086 Butte North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46104  Medicago polymorpha J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1542 Butte Grey Lodge Waterfoul Management Area along Rutheford Rd. where it turns 90 degrees to the north. Comment
  RSA754793  Medicago polymorpha L. Ahart 2009-5-8 15662 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  POM348140  Medicago polymorpha P. L. Ricker 1912-5-18 3953 Butte Chico. Comment
  SEINET10871260  Medicago polymorpha var. brevispina Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4858 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC108817  Medicago praecox Lowell Ahart 2012-4-9 17836 Butte Around the edges of a small vernal pool, west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 141 Comment
  JEPS107779  Medicago praecox Lowell Ahart 2005-5-2 11779 -A 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
  SEINET10874086  Medicago sativa Mary Susan Taylor 1981-5-11 Taylor 3688 A 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
  CDA4225  Medicago scutellata H. K. Wagnon 1956-6-1 Butte In vicinity of Chico Plant Intro. Gardens. 0 Comment
  UCD86257  Melica aristata G. F. Hrusa; T. D. Wilfred 1996-7-9 13103 Butte Plumas National Forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. 800 Comment
  CHSC65612  Melica californica var. californica L. P. Janeway 1995-6-19 4797 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CHSC101464  Melica geyeri L. P. Janeway; Sarah Starkey 2009-7-13 9855 Butte Northern High Sierra Nevada. Northwest side of Concow Road 2.8 air km northeast of upper end of Concow Reservoir, 1.5 road km northeast of Cirby Creek Road. 823 Comment
  UC600753  Melica stricta H. F. Copeland 1932-7-24 Butte sw of Butte Creek meadows (rim of Butte Creek drainage); Jonesville, Butte Creek 2000 Comment
  UC204543  Melilotus indicus A. A. Heller 1914-7-13 11567 Butte 10 mi e Oroville; Mt. Ida Ranch Comment
  CDA5721  Melissa officinalis L. 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 Fall. Comment
  CHSC102727  Melissa officinalis Lowell Ahart 2009-6-19 15949 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
  CHSC26638  Mentha canadensis M. S. Taylor 1977-11-12 1530 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC44398  Mentha canadensis Lowell Ahart 1988-6-21 6045 Butte Along the edge of te North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC78519  Mentha spicata Lowell Ahart 2000-8-30 8675 Butte Margins of a large pond, about 100 yards south of the Feather River, east of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. 42 Comment
  CHSC86082  Mentha spicata R. D. Fischer 2004-1-4 45 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. In drainage ditch next to Upper Park Road 300 ft. west of Salmon Hole. 243 Comment
  CHSC102979  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico. 68 Comment
  CHSC45980  Micranthes californica Lowell Ahart 1974-3-8 312 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC101970  Micropus californicus J. Boze 1982-5-8 438 Butte Along edge of Horseshoe Lake in Upper Bidwell Park. 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
  CAS-BOT-BC348700  Microseris acuminata Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC26734  Microseris acuminata M. S. Taylor; M. Hayes 1978-4-14 1562 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC44329  Microsteris gracilis Lowell Ahart 1988-3-28 5956 Butte Near the dirt road to Sugar Pine Point, about 1/8 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC45354  Microsteris gracilis Vernon Oswald 1987-4-16 2332 Butte Butte Creek Reserve on the n side of Butte Creek e of the Skyway. 74 Comment
  UC518026  Mimulus aurantiacus var. grandiflorus Lewis S. Rose 1933-5-26 33186 Butte 5 mi e Oroville; Feather River canyon 152 Comment
  UCD111670  Mimulus bicolor Christopher Mallek 2008-1 HW1- 10 Butte Magalia. 756 Comment
  JEPS121944  Mimulus breweri Lowell Ahart 2014-7-7 19599 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS108837  Mimulus geniculatus Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS29841  Mimulus glaucescens Rimo Bacigalupi and L. R. Heckard 1962-6-1 8585 Butte 1 mi below and w Paradise (along Honey Run Road, in upper reaches of canyon); Butte Creek canyon 365 Comment
  RSA754964  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Lake Oroville, north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET12326955  Mimulus guttatus L. D. Collins 1978-1 16 Butte 6 mi N of Oroville, 1 mi W of Cherokee Rd 305 Comment
  SEINET8340981  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  SFV3394  Mimulus guttatus M. L. Vincent 1962-4-16 197 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. 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
  RSA409258  Mimulus kelloggii J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  RSA792652  Mimulus kelloggii Dena Grossenbacher, Brian Green 2008-4-8 758 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  CHSC28680  Mimulus moschatus M. S. Taylor 1978-7-21 1827 Butte On s side of Oroville-Quincy Hwy along creek in meadow in Yellow Pine Forest, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC94014  Mimulus moschatus R. Fischer 2004-6-12 684 Butte Collected from Bidwell Park near the bottom of 10 Mile House Road, east side of Big Chico Creek, near north end of park property. Plants were growing at the edge of perennial meadow drainage. 219 Comment
  JEPS122032  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC113499  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  POM173736  Mimulus torreyi H. F. Copeland 1927-9-2 957 Butte Jonesville. Comment
  RSA4111  Mimulus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  JEPS107746  Mimulus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 67 Comment
  UC336556  Mimulus tricolor Edw. L. Greene June 1890 Butte Chico Comment
  CAS-BOT-BC174594  Minuartia californica A. A. Heller 1914-3-18 11208 Butte Eight miles north of Oroville Comment
  CHSC40650  Minuartia californica Ahart; Jokerst 1985-3-24 4868 Butte Found west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC92573  Minuartia californica L. P. Janeway 2005-3-1 8341 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  HSC68100  Minuartia californica J. P. Smith 1973-3-22 5907 Butte Along S.R. 149 just N of junction with U.S. 70 Comment
  CHSC103666  Minuartia cismontana Lowell Ahart 2010-4-30 16602 Butte Open are 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
  CHSC26819  Minuartia douglasii M. S. Taylor 1978-5-6 1575 Butte Serpentine around RR tracks, Magalia. 609 Comment
  CHSC42739  Minuartia douglasii Lowell Ahart 1987-5-11 5617 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC96571  Minuartia douglasii L. P. Janeway 2006-5-14 8597 Butte Northern High Sierra Nevada. Upper part of open serpentine slope just west of Jordan Hill Road; 0.9 km east of Sawmill Peak lookout. 953 Comment
  SEINET11933236  Minuartia douglasii S. E. Bigbee 1984-1 62 Butte Ca 400 yds W of Cherkee Rd on Table Mt., ca 12 mi N of Oroville 396 Comment
  CHSC28460  Mollugo verticillata R. A. Schlising 1979-9-23 3491 Butte SW of Chico and E of Ordbend, at west margin of Butte County at Sacramento River and Ord Ferry Road. In sand of river bar. Comment
  JEPS120585  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CDA3377  Mollugo verticillata T. C. Fuller 1959-7-6 s.n. Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  CAS-BOT-BC219948  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Near the edges of Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville 500 Comment
  UC196294  Monardella odoratissima subsp. glauca A. A. Heller 1914-7-23 11604 Butte Edge of the forest about Chico Meadows 1219 Comment
  POM193438  Monardella odoratissima subsp. pinetorum E. B. Copeland 1930-8-4 s.n. Butte Jonesville 1550 Comment
  CHSC27939  Monardella sheltonii M. S. Taylor 1978-7-18 1685 Butte On n side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1326 Comment
  CHSC39669  Monardella sheltonii Lowell Ahart 1983-6-21 4083 Butte Along Bloomer Hill Rd., about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC79520  Monardella sheltonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13975 Butte Northern California. Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  RSA70492  Monardella sheltonii C. C. Bruce 1898-05 2452 Butte Chico Creek. [county uncertain: not specified on voucher label] Comment
  CAS-BOT-BC220310  Monardella venosa C. C. Parry 1883-1-1 s.n. Butte Chico Comment
  RSA724908  Monardella villosa subsp. sheltonii L. P. Janeway 2007-6-26 9075 Butte Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air KM northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  UC2035834  Monardella villosa subsp. villosa Chester Dudley 1940-6-1 Butte near Magalia Comment
  UC1009214  Monochoria vaginalis J. M. tucker and J. J. McCaskill and W. A. Harvey 1954-9-15 2753 Butte Biggs Rice Experiment Station Comment
  CHSC57135  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-22 3055 Butte Upper Coon Hollow; just below the saddle between Coon Hollow and Chips Creek. 1920 Comment
  UC600488  Montia chamissoi H. F. Copeland 1932-6-27 Butte in and at edge of Butte Creek Meadows Butte Creek Meadows; Jonesville, Butte Creek Meadows Comment
  CHSC84468  Montia diffusa Lowell Ahart 2003-7-12 10378 Butte Near a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  SEINET10572657  Montia diffusa Mary Susan Taylor 1981-5-5 Taylor 3615 Butte T20N R6E se/se sec 11 Forbestown quad. Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi S of Feather Falls trailhead, ca. 0.5 air mi N of Feather Falls community. Yellow Pine Forest; 2700 ft. 823 Comment
  CHSC27071  Montia fontana subsp. chondrosperma James T. Nicol 1978-3-15 12 Butte Ca. 30 m se of junct. of Honey Run-Humbug Rds. 10.2 km ese of Chico. 120 Comment
  CHSC28633  Montia fontana subsp. chondrosperma M. S. Taylor 1979-3-31 1965 Butte In very wet ditch. Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  UC1586595  Montia parvifolia Vernon H. Oswald and Lowell Ahart 1991-6-5 4652 Butte 1.5 air mi nw of Platte Mountain Lookout (dirt road to Minnie-Ha-Ha Mine on Big Chico Creek, on w side of Hwy 32, between Forest Ranch and Lomo); Big Chico Creek 792 Comment
  POM101999  Montia parvifolia Mrs. R. M. Austin 1883-05 19 Butte Chico Creek Comment
  CHSC45332  Morus alba Vernon Oswald 1987-4-9 2319 Butte Bidwell River State Park between the Washout (Chico Landing Site) and Big Chico Creek. 38 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
  JEPS116024  Muhlenbergia mexicana Lowell Ahart 2009-7-9 16023 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC11973  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. On bank of pond. 1750 Comment
  RSA585085  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Neighborhood of Jonesville 1829 Comment
  CHSC65462  Myosurus minimus Vernon Oswald 1988-3-16 3257 Butte Butte Creek Canyon Ecological Reserve on the south side of Butte Creek e of Hwy 99 near the control valves of Durham Mutual Ditch. In a track. 67 Comment
  UC1609490  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  CHSC28574  Myriophyllum spicatum M. S. Taylor; J. D. Jokerst 1979-11-11 2277 Butte Aquatic in irrigation ditch, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  CHSC20528  Myrtus communis Pamela Caldwell 1971-11-7 Butte CSUC campus. So-wil-len-no Rd. Behind amphitheatre. Comment
  CHSC6049  Nandina domestica M. MacArthur 1968-6-12 147 Butte Location: NW side of LS bld. Near the SW end, Chico State College campus. 60 Comment
  CHSC25255  Navarretia divaricata M. S. Taylor 1977-6-26 1393 Butte On s side of Ponderosa Way, ca. 4 mi e of Cohasset. 548 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
  CHSC93987  Navarretia divaricata subsp. divaricata R. D. Fischer 2004-6-20 780 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
  CHSC37313  Navarretia divaricata subsp. vividior L. Ahart 1982-6-4 3533 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC88075  Navarretia filicaulis R. D. Fischer 2004-6-6 160 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail between the junctions of Pine Trail and 10 Mile House Road. 403 Comment
  CHSC91458  Navarretia filicaulis Lowell Ahart 2005-7-13 12151 Butte About 100 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
  SEINET10496827  Navarretia intertexta Mary Susan Taylor 1980-5-15 Taylor 2627 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
  CHSC101836  Navarretia intertexta subsp. intertexta Lowell Ahart 2009-5-23 15754 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on east side of Ten Mile House Road, just northeast of Guardians Trail. 381 Comment
  UCD106178  Navarretia leptalea E. B. Copeland 1928-8-18 s.n. Butte Jonesville. 1524 Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  CHSC88962  Navarretia leucocephala subsp. leucocephala Christine Hantelman 2000-4-8 70 Butte On vernal pool preserve between Oroville airport runway and Table Mountain golf course. On margin of pools. 60 Comment
  RSA256643  Navarretia leucocephala subsp. leucocephala Kitsy Kelly 1974-4-20 18 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  CDA40121  Navarretia nigelliformis T. C. Fuller 1962-5-17 8706 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC91111  Navarretia pubescens Lowell Ahart 2005-5-28 11822 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  JEPS107889  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  RSA717292  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte On the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UC1719847  Navarretia tagetina David Fruchter 1979-5-28 s. n. Butte Richvale (N of Corning) Comment
  CHSC46823  Nemacladus capillaris R. A. Schlising; R. Banchero 1981-6-16 4083 Butte Cohasset, 0.3 mi S of junction with Vilas Road, on Cohasset Road. 646 Comment
  CHSC118892  Nemacladus capillaris R. A. Schlising 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  JEPS115283  Nemophila heterophylla Lowell Ahart 2009-4-3 15531 Butte Along the north margin of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UCD119996  Nemophila heterophylla K. Esau; M. Phillips 1929-4-13 1918 Butte Chico. Comment
  UC107227  Nemophila menziesii H. E. Brown Mar 3 1897-Mar 23 1897 252 Butte near Clear Creek; ; near Clear Creek, Butte Co. 53 Comment
  CHSC60986  Nemophila pedunculata Lowell Ahart 1993-6-20 7002 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile northwest of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC90461  Nemophila pedunculata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11678 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico. 236 Comment
  JEPS117154  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 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
  SEINET8395638  Nemophila pedunculata A. Heller 1922-3-19 13606 Butte Near Clear Creek. Comment
  SEINET5536418  Nemophila pulchella M. J. Williams 1967-4-22 s.n. Butte Feather Falls Road 610 Comment
  UC426938  Nemophila spatulata E. B. Copeland 1930-6-28 445 Butte Jonesville 1650 Comment
  CHSC34016  Nicotiana glauca L. Ahart 1981-7-18 2942 Butte In the burrow area ca. 4.5 mi sw of Oroville. Along the dirt rd near the base of the levee. 35 Comment
  CDA41165  Nicotiana quadrivalvis L. Ahart, Vernon H. Oswald 1999-8-13 8136 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CAS-BOT-BC400069  Nuphar polysepala E. B. Copeland 1929-7-29 s.n. Butte Jonesville, near Butte Creek House 1750 Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  SEINET3154256  Odontostomum hartwegii L. S. Rose 1937-6-10 37362 Butte Hurleton 579 Comment
  SEINET12265276  Odontostomum hartwegii J. H. Morris 1932-1 s.n. Butte Durham Comment
  CAS-BOT-BC171468  Oenothera cruciata Lowell Ahart 1988-5-30 6018 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS44059  Oenothera elata subsp. hirsutissima W. L. Jepson 1939-8-17 19458 Butte near Oroville; Feather River 45 Comment
  CDA34717  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  CHSC6028  Olea europaea M. MacArthur 1968-6-18 223 Butte Ca. 10 ft. W of Big Chico Creek and ca. 30 ft N of PSA bld. bridge, Chico State College. 60 Comment
  CHSC39923  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge se of Flea Mt. n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  JEPS113318  Oreostemma alpigenum var. andersonii L. P. Janeway 2006-8-12 8847 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. Comment
  CHSC48679  Orthilia secunda Vernon Oswald 1987-7-29 3162 Butte On the edge of Coon Hollow Creek, 1.0 mi (odometer) se of Humbug Rd., ca. 2.25 mi (air) n of Philbrook Reservoir. 1645 Comment
  RSA715718  Orthocarpus erianthus L. P. Janeway 2005-3-1 8332 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10549670  Orthocarpus erianthus Mary Susan Taylor 1980-3-1 Taylor 2325 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 76 Comment
  SEINET10549677  Orthocarpus erianthus Mary Susan Taylor 1973-1 Taylor 59 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10549691  Orthocarpus lacerus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5393 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  SEINET12328377  Orthocarpus lacerus M. S. Taylor, Oswald, V. 1984-1 5393 Butte S side of Humbug Rd, ca 2 mi SW of Nimshew, ca 12 air mi NE of Chico Comment
  SEINET10549699  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-18 Taylor 2533 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC25254  Osmorhiza chilensis M. S. Taylor 1977-6-26 1378 Butte S side of Ponderosa Way, ca. 3 mi w of Forest Ranch. 609 Comment
  CHSC27915  Osmorhiza chilensis M. S. Taylor 1978-7-19 1733 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jomesville. 1524 Comment
  SEINET3840915  Ottelia alismoides G. Douglas Barbe, Thomas C. Fuller 1977-9-20 2334 Butte West of Biggs Rice Experiment Station, Submersed aquatic in drainage canal, east of Cherokee Canal, approximately 0.5 kilometers south of Highway 162 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
  RSA724822  Oxypolis occidentalis L. Ahart 2006-9-9 13247 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 air mile northwest of Jonesville, about 5 air miles northeast of Butte Meadows 1561 Comment
  CHSC48195  Packera eurycephala var. eurycephala Vernon Oswald 1987-6-2 2949 Butte On the s side of the Oroville-Wyandotte Canal about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  LA212209  Packera eurycephala var. lewisrosei James R. Shevock; 1972-5-9 1777 Butte Feather River Canyon, Jarbo Plass. 914 Comment
  CHSC42925  Panicum capillare Lowell Ahart 1987-7-3 5776 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
  JEPS76250  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  RSA726556  Panicum capillare L. Ahart 2007-10-31 14513 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  UCD89718  Panicum dichotomiflorum E. Wilson 1934-10-1 s.n. Butte Near Biggs. Comment
  CHSC116140  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2015-10-26 20606 Butte Strand of Lake Oroville, on west side of West Branch of Feather River,about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southest of Paradise. 207 Comment
  CDA6402  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern Sierra Nevada Foothills; On the slopes above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. Comment
  CHSC37402  Parnassia palustris R. Schlising; J. D. Jokerst 1982-9-7 4386 Butte N part of county, s of Inskip along Skyway. 1432 Comment
  JEPS104347  Parvisedum pumilum Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  CAS-BOT-BC259622  Paspalum dilatatum Lowell Ahart 1982-10-15 3895 Butte Along the edges of N Honcut Creek, ca. 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC2171  Paspalum dilatatum D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  CHSC110343  Paspalum distichum B. Castro 2006-8-10 1597 Butte Sacramento Valley. Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On W side of canal about 30 ft N of dirt road crossing the canal. 35 Comment
  CHSC78964  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  JEPS110515  Paspalum distichum Lowell Ahart 2006-10-13 13506 Butte Peter Ahart Ranch, about 1 1/2 mile north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  UCD88967  Paspalum distichum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC39528  Paspalum urvillei Lowell Ahart 1983-6-12 4049 Butte In a meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  SEINET10453506  Paxistima myrsinites Lowell Ahart 1983-3-28 Ahart 3909 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 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
  JEPS117133  Pectocarya pusilla Lowell Ahart 2010-5-7 16615 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  SBBG40344  Pedicularis densiflora J. Ingram, A. Ingram 1960-4-5 282 Butte ca. 2 mi N of Magalia Comment
  SFV3421  Pedicularis densiflora M. L. Vincent 1961-3-20 9 Butte Paradise. Harrison and Stearns Roads. 535 Comment
  CHSC4051  Pellaea andromedifolia J. W. Cherry 1967-3-23 Butte Along north bank of Big Chico Creek, directly s. of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  CAS-BOT-BC71200  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  UC399519  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  CAS-BOT-BC69335  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  CAS-BOT-BC67599  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte Near the Forbestown Res., in a dry open area above the road and on the east side of Woodleaf Creek, 450 Comment
  SEINET10834168  Pellaea mucronata Mary Susan Taylor 1980-4-18 Taylor 2524 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC32636  Pellaea mucronata var. californica M. S. Taylor; L. Hanson 1981-4-2 3478 Butte NNW of Sawmill Peak, off Jordan Hill Rd/Ponderosa Way, ca. 1 air mi ne of Magalia. 701 Comment
  SEINET10865355  Penstemon azureus var. azureus Heidi H. Schmidt 1993-6-15 Schmidt 868 Butte Plumas National Forest. On state road 23N06 ca. 3 miles N of the junction with highway 70. Mixed hardwood and conifer forest. 1010 Comment
  UC886964  Penstemon deustus var. deustus A. A. Heller 1915-6-16 12023 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  UC426950  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte above Jonesville; above Jonesville 1950 Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC21055  Penstemon heterophyllus var. purdyi M. S. Taylor 1975-6-30 815 Butte Ca. 300 yds w of Cohasset Hwy, Cohasset. 731 Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC35219  Penstemon laetus var. leptosepalus M. S. Taylor 1981-5-7 3629 Butte N side of Ponderosa Way, 0.8 mi n of Sucker Creek bridge, ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC43075  Penstemon laetus var. leptosepalus R. A. Schlising; J. D. Jokerst 1980-7-2 3818 Butte Nimshew Road, 1.0 mi S of Nimshew Cementary. 731 Comment
  CHSC61592  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch. Comment
  NY604513  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch Comment
  POM220089  Penstemon laetus var. leptosepalus H. F. Copeland 1927-9-4 480 Butte Jonesville. Comment
  NY627278  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral 1645.9 Comment
  POM195088  Penstemon neotericus D. D. Keck 1930-7-24 971 Butte Near Chaparral. 1646 Comment
  CHSC107594  Penstemon newberryi var. newberryi Lowell Ahart 2011-7-9 17577 Butte Northwest part of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CHSC69056  Penstemon personatus Lowell Ahart 1997-8-1 7803 Butte On the north side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  JEPS109969  Penstemon personatus Dean W. Taylor 2006-7-13 19565 Butte Bald Mountain; along Concow Road (Forest Road 25N02) ca. 1 mile north of the summit fire lookout, at logging road junction with ''T'' line 1737 Comment
  SEINET10548096  Penstemon personatus Mary Susan Taylor 1982-8-16 Taylor 4998 A 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
  CHSC31035  Penstemon rydbergii M. S. Taylor; R. A. Schlising 1980-7-6 3086 Butte N side of Old Humboldt Rd, just w of Butte Meadows Ranger Station. 1341 Comment
  UC1602332  Penstemon rydbergii var. oreocharis E. B. Copeland 1930-8-4 Butte on gravel bar by Butte Creek (Jonesville); , Jonesville 1500 Comment
  CHSC39892  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte Ca. 1/4 mile south of Cox Lane, east of the pole line tower; ca. 3.5 miles NE of Honcut. 100 Comment
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  HSC66080  Pentagramma pallida M. S. Taylor 1980-3-30 2413 Butte N side of Big Chico Cr., Diversion Dam, upper Bidwell Park, Chico 244 Comment
  CAS-BOT-BC77084  Pentagramma triangularis subsp. triangularis Saichi Kawahara 1968-5-4 378 Butte Paradise - James Ripley's property, Graham Road 640 Comment
  CAS-BOT-BC77089  Pentagramma triangularis subsp. triangularis R. A. Emmrich 1975-4-24 46 Butte Ca. 1/2 mi. E of Butte Creek and 1/4 mi. SE of Covered Bridge, 6 mi. ESE of Chico. 128 Comment
  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
  CHSC117763  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC40222  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1852 Butte Scotts John Rd., 0.9 mi n of Rd. 26N27, ca. 2.5 air miles ene of Jonesville. 1780 Comment
  UC1312882  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  CHSC37275  Perideridia lemmonii L. Ahart 1982-8-19 3744 Butte Along sides of North Honcut Creek, in a protected shady place, Peter Ahart Ranch, ca. 1 mile n and 3 mi e of Honcut. 50 Comment
  JEPS117536  Perideridia lemmonii Lowell Ahart 2010-9-21 17212 Butte On damp bare soil, open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CDA42946  Persicaria hydropiper L. Ahart 2012-10-28 18522 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC23425  Persicaria lapathifolia K. R. Stern 1972-9-19 3781 Butte Margin of Perkins Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC34207  Persicaria lapathifolia J. D. Jokerst; L. Ahart 1981-9-26 1479 Butte Chico River State Park (Chico Landing) at the E bank Sacramento River ca 5 mi W of Chico. Locally abundant on dry sand bars. Comment
  CHSC43246  Persicaria lapathifolia Lowell Ahart 1987-10-22 5922 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70. 76 Comment
  CHSC31762  Persicaria maculosa L. Ahart 1977-9-20 1580 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC94565  Persicaria maculosa Lowell Ahart 2006-9-11 13290 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC419173  Persicaria maculosa Lowell Ahart 1981-9-19 3189 Butte Cresta Power House 550 Comment
  CHSC108124  Persicaria punctata Lowell Ahart 2011-10-29 17724 -A 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
  JEPS124336  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  RSA41905  Petrorhagia dubia Ella Dales Cantelow 1940-5-10 3078 Butte 10 miles E of Oroville, Bidwell Bar Bridge. Comment
  SEINET5726582 Image available Petrorhagia dubia Gary L. Carlin 1971-1 28 Butte Honey Run Road crossing of Butte Creek, 3.7 miles east of Chico.; Chico 122 Comment
  SEINET10546873  Phacelia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5228 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  SEINET10546874  Phacelia Mary Susan Taylor 1979-10-5 Taylor 2229 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC45933  Phacelia cicutaria Lowell Ahart 1974-4-24 439 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 Comment
  CHSC105820  Phacelia mutabilis Lowell Ahart 2010-9-28 17269 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  JEPS110075  Phacelia racemosa Lowell Ahart 2006-7-16 12962 Butte Near of the open mudflow area, on the south side (gutter) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  UCD88798  Phalaris caroliniana A. A. Heller 1914-4-17 11307 Butte 8 miles N of Oroville. Comment
  CHSC36521  Phalaris lemmonii L. Ahart 1982-5-10 3431 Butte On bottom of a vernal pool in the fields, Peter Ahart Ranch, Honcut, ca. 2.5 mi n and 1/4 mi e of Honcut. 50 Comment
  CAS-BOT-BC250706  Phalaris paradoxa Lowell Ahart 1981-5-24 2833 Butte Peter Ahart Ranch, ca. 2 mi. N and 2 mi. E of Honcut 50 Comment
  CHSC56831  Phalaris paradoxa J. M. Lund 1980-3-3 Butte Chico Game Fish Farm, 0.2 mi west of Hwy 99, 1.0 mi north of Hwy 149. On a levee. 91 Comment
  CHSC6135  Phalaris paradoxa J. Wheeler 1968-4-19 322 Butte Table Mountain, n of ne branch of Beatson Hollow, along edge of temporary pond. 548 Comment
  JEPS107748  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham 70 Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  CHSC45109  Phleum alpinum Lowell Ahart 1988-9-4 6185 Butte On the bottom of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  CAS-BOT-BC250862  Phleum pratense H. F. Copeland 1920-8-29 144 Butte Jonesville Meadow 1219 Comment
  CHSC41283  Phleum pratense S. C. Morey 1983-7-21 500 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC42924  Phleum pratense Lowell Ahart 1987-7-8 5795 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC59053  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  UC880352  Phlox gracilis A. A. Heller 1915-6-27 12041 Butte Jonesville Sierra Nevada 1676 Comment
  CHSC4667  Phlox speciosa subsp. occidentalis R. Carter 1966-4-11 337 Butte Found ca. 1 mi. E of Bidwell Bar along S side of R.R. tracks, 300 yds W of R.R. bridge over S Fork. 152 Comment
  CAS-BOT-BC135130  Phoradendron juniperinum Clarence R. Quick 1962-8-19 62 -82 Butte Coyote Gap-Four Trees Road. Plumas National Forest 1463 Comment
  SEINET10492843  Phoradendron juniperinum subsp. libocedri Mary Susan Taylor 1981-5-15 Taylor 3739 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  CHSC101261  Phoradendron villosum Lowell Ahart 2009-4-17 15559 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
  POM105948  Phoradendron villosum C. C. Bruce 1897-03 1786 Butte Little Chico Comment
  CHSC106605  Photinia serratifolia L. P. Janeway 2011-4-20 10236 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  CHSC49438  Physalis acutifolia Vernon Oswald 1983-10-10 1066 Butte Near Chico on Bell Rd. ca. 1/2 mi s of the Mud Creek Diversion Channel. Along the edge of a young orchard. Comment
  CHSC52369  Physocarpus capitatus L. P. Janeway 1989-5-17 3251 Butte Near rd to Forbestown Diversion Dam 4.1 mi from Forbestown Rd. 640 Comment
  NY43557  Physocarpus capitatus S. Bianco 1995-10-28 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  CAS-BOT-BC76941  Pilularia americana Lowell Ahart 1973-4-15 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC76942  Pilularia americana Lowell Ahart 1983-5-12 3969 Butte About 1/2 mile north-east of Highway 99 & Pentz Road. 65 Comment
  UC1561898  Pilularia americana Barbara Ertter with Lowell Ahart 1986-4-13 5895 Butte ca. 2 airmiles nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  NY49911  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC88660  Pinus lambertiana H. Gray 2003-1-27 Butte Plumas National Forest. 914 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  CAS-BOT-BC78936  Pinus monticola A. A. Heller 1915-6-26 12033 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC86581  Piperia elongata L. P. Janeway; Christine Hantelman 2003-6-19 7852 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 277 Comment
  CHSC74146  Piperia transversa R. Beattie; M. Muchowski 1996-7-17 Butte Ca 3 air mi SW of Walker Plains, on the N side of USFS Rd 22N93, 0.1 mi N of the Haphazard Creek crossing. 987 Comment
  CHSC88246  Piperia transversa Lowell Ahart 2004-7-11 11246 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC49562  Piptatherum miliaceum Vernon Oswald 1985-6-12 1829 Butte Bidwell State Park slightly s of the Washout on River Rd. On a bank of the river. 38 Comment
  CHSC100502  Pittosporum tobira Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15421 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10529837  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1981 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10899934  Pityrogramma triangularis var. semipallida Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5514 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  UCD80155  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-14 SNFN 0034 b Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~ 45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  POM64763  Plagiobothrys bracteatus E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  UCD120782  Plagiobothrys bracteatus Michael A. Vincent; Ethan H. Freid 1998-4-6 8131 Butte Table Mountain. Comment
  UC78035  Plagiobothrys canescens Mrs. R. M. Austin Mar 1896 Butte Comment
  UC480695  Plagiobothrys fulvus H. F. Copeland 1929-5-4 1128 Butte in fields near Chico Comment
  JEPS123819  Plagiobothrys fulvus var. campestris Lowell Ahart 2015-4-18 20050 Butte About 1 1/2 miles southwest of the intersection of Robinson Mill Road and Forbestown Road, about 12 miles (air) southeast of Oroville. Comment
  CHSC28982  Plagiobothrys glyptocarpus R. A. Schlising 1980-3-23 3519 Butte E of Chico and SW of Paradise. 289 Comment
  CHSC32127  Plagiobothrys glyptocarpus L. Ahart 1978-4-27 1667 Butte Along edges of small wash. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  CHSC46344  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-23 6238 Butte Along the edges of a small stream, north of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC46345  Plagiobothrys glyptocarpus Lowell Ahart 1989-5-28 6279 Butte In a mined over area south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  UCD73006  Plagiobothrys scriptus 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
  CHSC46767  Plagiobothrys shastensis Lowell Ahart 1979-5-12 1872 Butte In pasture fields, 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
  CDA34703  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico Comment
  CHSC77981  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte In the mudhole of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  UCD121010  Plagiobothrys stipitatus var. micranthus W. R. Powell 1968-4-23 1470 Butte 2 miles south-southeast of Oroville. 71 Comment
  CAS-BOT-BC60825  Planodes virginica Lowell Ahart 1989-3-20 6192 Butte West of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles S of Oroville 30 Comment
  CHSC28765  Plantago bigelovii J. D. Jokerst 1979-3-30 194 Butte Ca 300 meters S.E. of Hwy. 32, east of Chico. 396 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
  JEPS103364  Plantago elongata Lowell Ahart 2002-3-16 9417 Butte On the bottom and sides of a depression, on the N side of a poor dirt road, ca 50 yards N of Highway 32, ca 1/4 mile E of the intersection of Bruce Road and Highway 32, E of Chico. 73 Comment
  JEPS119682  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte About 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC30381  Plantago erecta J. D. Jokerst 1979-3-20 1144 Butte Top of North Table Mt., ca 0.5 mi N of the jct of Cherokee Rd and E edge of Mt. 396 Comment
  UC1506095  Plantago erecta Robert T. Clausen 1963-3-20 63009 Butte s of Chico (low ridge e of Mutual Ditch, Sacramento River drainiage); Sacramento Valley, Sacramento River 57 Comment
  RSA325092  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd, ca 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca 2 mi N of Lake Concow, ca 20 air mi NE of Oroville. 854 Comment
  RSA756695  Plantago erecta Barbara J. Ertter, Linda Vorobik 1986-4-13 5881 Butte NE arm of Lake Mendocino NE of Ukiah. North side of Highway 20. 366 Comment
  UCD124474  Plantago erecta Peter H. Raven 1963-5-8 18365 Butte 5 miles south of Cherokee. Comment
  CHSC107433  Plantago lanceolata L. P. Janeway 2011-6-29 10407 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC31779  Plantago lanceolata L. Ahart 1973-6-28 256 Butte Peter Ahart Ranch, Honcut. On dry sand near a creek. 45 Comment
  CHSC42549  Plantago major Lowell Ahart 1987-5-6 5532 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET13710809  Plantago virginica Lowell William Ahart, Lowell William Ahart 2000-1 8348 Butte Thermalito Afterbay W of Larkin Rd., 5 Air Mi. SW of Oroville, 140 Ft. (T19N, R3E, sec 27, SW 1/4) 43 Comment
  SEINET10476447  Platanus occidentalis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5376 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  CHSC30887  Plectritis macrocera J. D. Jokerst 1979-4-6 1186 Butte Top of North Table Mt, W edge of Mt. 365 Comment
  RSA32918  Plectritis macrocera subsp. grayi A. A. Heller 1938-4-14 15026 Butte Summit of Table Mtn. 305 Comment
  CHSC6058  Poa E. Parreno 1968-3-15 41 Butte Right side of rd. leading to Missle Base, side intersecting with Keefer Rd., Chico. Comment
  CHSC2181  Poa annua M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  UCD80594  Poa annua CNPS SN Foothill Team 2005-3-31 SNFN 0073 d Butte CDFG North Table Mountain Wildlife Area, North Table Mountain complex, in the middle and eastern portion of the southern-most table. 310 Comment
  CAS-BOT-BC255684  Poa bolanderi A. A. Heller 1917-7-29 12868 Butte Summit above Jonesville 2133 Comment
  CHSC8602  Poa bulbosa M. Banning 1969-4-9 47 Butte 9 mi. E. Chico on Hwy. 32. 259 Comment
  JEPS115963  Poa bulbosa Lowell Ahart 2009-4-22 15598 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET10901783  Poa gracillima Mary Susan Taylor 1980-6-14 Taylor 2877 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  CHSC8588  Poa pratensis D. McClain 1969-4-18 64 Butte 100 yds. s. of Upper Bidwell Rd., 4.5 mi. e. of Upper Bidwell Park Entrance, Chico. 67 Comment
  RSA700237  Poa pratensis L. Ahart 2004-7-23 11304 Butte on the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, bout 1.5 miles (air) west of Philbrook Reservoir Dam., About 3 3/4 miles (air) southeast of Butte meadows. 1457 Comment
  SEINET10659754  Poa pratensis Moyer 1972-4-16 MOYER 189 Butte S bank Chico Crk., between Warner St and New Dorm Bridge 61 Comment
  CHSC111401  Poa pratensis subsp. pratensis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey. 2012-6-28 18240 Butte About 1/3 of a clump, on wet good soil, on the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 61 Comment
  CHSC71216  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC88152  Poa pratensis subsp. pratensis Lowell Ahart 2004-7-23 11304 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CAS-BOT-BC236372  Poa secunda subsp. secunda Lowell Ahart 1980-3-15 2043 Butte Near intersection of Pentz Road and 99E 50 Comment
  CHSC31699  Poa secunda subsp. secunda L. Ahart 1970-3-18 35 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC54370  Poa secunda subsp. secunda M. Bailey 1991-3-9 550 Butte Butte College campus, in the vicinity of the intersection of Clark and Pentz Roads. 85 Comment
  CHSC93505  Poa secunda subsp. secunda Lowell Ahart 2006-5-10 12615 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC45030  Pogogyne douglasii Pauleen Broyles 1988-4-6 1101 Butte The Nature Conservancy Vina Plains Preserve. West of reservoir in n.e. portion of Addition, in an extensive low area. Comment
  CHSC48493  Pogogyne douglasii Vernon Oswald 1986-4-28 1983 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  CHSC14009  Pogogyne zizyphoroides G. Notch 1974-4-16 156 Butte 500 yds e of Cherokee Rd. ca 5.5 mi sw of Cherokee. 373 Comment
  SEINET12318337  Pogogyne zizyphoroides E. D. Osman 1978-1 18 Butte Ca 7.8mi N of Chico and 200' E of Cohasset Hwy. Richardson Springs Quadrangle, 7.5'. NE corner of * 76 Comment
  CHSC11948  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC75266  Polycarpon tetraphyllum Lowell Ahart 1999-5-24 8080 Butte Sidewalks, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC46498  Polygala cornuta Lowell Ahart 1989-5-31 6334 Butte On the west side of a small stream, north of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC110252  Polygonum aviculare subsp. depressum L. P. Janeway 2012-10-11 11075 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CAS-BOT-BC109141  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road. 609 Comment
  SEINET3405100 Image available Polygonum bidwelliae A. A. Heller 1941-5-25 16149 Butte Just back of the Rifle Range, 5 miles E of Chico, opposite Golf Links Comment
  UCD99854  Polygonum bidwelliae F. T. Griggs 1978-5-31 s.n. Butte East of Rifle Range, Upper Bidwell Park, Chico. 91 Comment
  CAS-BOT-BC109152  Polygonum bolanderi Lowell Ahart 1983-8-16 4280 Butte A little north of Humboldt Road, about 3 miles southwest of Butte Meadows. 1450 Comment
  UC204387  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit 1463 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
  SEINET10479346  Polygonum douglasii Mary Susan Taylor 1978-9-9 Taylor 1916 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CDA42849  Polygonum lapathifolium L. Ahart 2011-8-17 17628 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  UC849887  Polygonum persicaria A. A. Heller 1916-9-30 12663 Butte hills 8 mi n Oroville Comment
  CHSC94265  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2006-7-16 13006 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  SBBG29156  Polygonum spergulariiforme E. B. Copeland 1931-7-3 Butte Colby Cyn, Jonesville 1550 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  SEINET10834127  Polypodium californicum Mary Susan Taylor 1979-10-13 Taylor 2254 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  SEINET10966165  Polypodium californicum Mary Susan Taylor 1979-9-28 Taylor 2191 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC29018  Polypodium calirhiza M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2430 Butte Ca. 10 ft s of Swedes Flat Rd, at jct with Rocky Honcut Creek, ca. 2 mi e of OrovilleBangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC83918  Polypodium calirhiza Lowell Ahart 2003-4-10 10077 Butte Face of basalt cliff, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 334 Comment
  UCD169390  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CDA2346  Polypogon monspeliensis L. Ahart 2002-5-7 9635 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC8578  Polypogon monspeliensis B. Hamilton 1969-4-18 34 Butte Found around sidewalk at Humboldt and Flume Streets, Chico. Comment
  SEINET10960583  Polypogon monspeliensis A. Arthur Heller 1902-5-15 Heller 556 Butte Near Biggs Comment
  CHSC101751  Polystichum californicum Lowell Ahart 2009-5-23 15741 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 234 Comment
  JEPS117719  Polystichum californicum Lowell Ahart 2010-6-12 16801 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, ab out 3/4 mile (air) west of Highway 32, about 9 miles (air) northeat of Chico 197 Comment
  UC1618880  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte 1.5 mi sse Feather Falls (immediately above Sucker Creek); Sierra Nevada, Plumas Nat'l Forest, Clipper Mills 7.5' Quadr 720 Comment
  SEINET10530115  Polystichum imbricans Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3470 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  SEINET10867042  Polystichum imbricans Mary Susan Taylor 1981-3-18 Taylor 3420 Butte T22N R5E ne sec 16. Pulga SW quad. N side of Pulga Rd, at bridge and along road to 1/4 mi n of its jct with Hwy 70 at Pulga bridge, ca. 20 air mi n of Oroville. Serpentine outcrops; 1600 ft. 488 Comment
  CHSC116291  Polystichum imbricans subsp. imbricans Lowell Ahart 2015-10-23 20581 Butte On south side of Forbestown Reservoir, about 400 yards southeasst of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 564 Comment
  CHSC61624  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-9-13 7240 Butte On the south side of the dirt road, road is on the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC92384  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  SD234000  Polystichum munitum Virginia Pinkus Ryder 1965-4-4 400 Butte Megalia, Feather River. 701 Comment
  UC600407  Populus tremuloides H. F. Copeland 1930-7-26 Butte Jonesville Comment
  CHSC76021  Potamogeton crispus Lowell Ahart 1999-8-22 8189 Butte In a pond, 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-BC452107  Potamogeton crispus M. S. Taylor 1979-10-2 2216 Butte On e bank of Sacramento River at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  CHSC8772  Potamogeton diversifolius S. Chulasmai 1966-4-15 9 Butte Keefer Rd, up to northern Chico. Ditch. Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  CHSC65476  Potamogeton pusillus var. tenuissimus Vernon Oswald 1989-6-8 3800 Butte W side of Hwy 99 in ditch just n of Comanche Creek in s Chico. 64 Comment
  SD2231  Potentilla andersonii E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CHSC42546  Potentilla biennis Lowell Ahart 1987-5-27 5689 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
  CHSC87437  Potentilla glandulosa subsp. glandulosa R. D. Fischer 2004-3-28 101 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail at bottom of cliff face, below the Disk Golf Course. 396 Comment
  CHSC54309  Potentilla glandulosa subsp. reflexa Vernon H. Oswald 1991-6-3 4640 Butte Trail along Butte Creek upstream from the bridge on Doe Mill Rd (Ponderosa Way), ca. 3 mi (air) north-northeast of De Sabla. 621 Comment
  CHSC64213  Potentilla gracilis var. fastigiata S. C. Morey 1983-8-1 656 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC50560  Potentilla norvegica Vernon Oswald 1990-7-9 4356 Butte Paradise Lake, ca. 3 mi north of Magalia. On the bank of Mosquito Creek, just below the high-water line of the lake. 775 Comment
  CHSC63976  Proboscidea louisianica B. Castro 1987-8-6 202 Butte E side of Chico Cyn as it heads NE. 91 Comment
  SEINET9791606 Image available Proboscidea louisianica Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC77026  Proboscidea lutea Loren Gehrung 1999-8-11 Butte Along Hwy 149 about 1 mi southeast of Hwy 99. Disturbed ground between the road and agricultural fields. 60 Comment
  CHSC43836  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-13 2200 Butte Flea Valley. 0.1 mi from Concow Rd on road into Flea Valley. 1127 Comment
  CHSC52217  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-5 2154 Butte Upper reach of Carey Gulch where F. S. Rd 22N89 crosses it 0.5 mi from the OroQuincy Hwy. 1097 Comment
  JEPS115360  Prunella vulgaris var. lanceolata Lowell Ahart 2009-7-9 16010 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
  CHSC82331  Prunus S. Posner 1972-9-23 Butte Garden behind 725 Nord Ave., Chico. Comment
  CAS-BOT-BC154609  Prunus subcordata Lowell Ahart 1990-3-19 6420 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 33 Comment
  CHSC93520  Prunus subcordata L. P. Janeway; Dan Lubin 2006-5-9 8581 Butte Northern High Sierra Nevada. Head of small side drainage into Concow Creek; between Concow Creek and Cirby Creek, 2.6 km north of the upper end of Concow Reservoir. In west-facing dry bowl. 750 Comment
  UCD134978  Pseudobahia heermannii M. S. Taylor 1980-4-1 2423 Butte overlooking Butte Creek, in Foothill Savannah around 1/4 mile downstream from Honey Run Covered Bridge, around 6 miles east of Chico. 182 Comment
  CHSC88074  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  UC1609324  Pseudognaphalium californicum Lowell Ahart 1993-7-31 7147 Butte just s Lake Concow (along w edge of Concow Rd) 640 Comment
  CHSC21054  Pseudognaphalium luteoalbum M. S. Taylor 1975-4-25 503 Butte On Cohassett Hwy, ca. 1/2 mi n of Horse trough, ca. 20 mi ne of Chico. Comment
  CHSC65682  Pseudognaphalium luteoalbum Vernon H. Oswald 1996-3-22 7256 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CHSC76829  Pseudognaphalium luteoalbum L. P. Janeway 1999-11-15 6627 Butte Northern Sierra Nevada foothills. Along drainages below high water line of Lake Oroville, below Nelson Bar Road about 0.6 mi north-northwest of Lime Saddle. Ravines below forest. 274 Comment
  CHSC66288  Pseudognaphalium stramineum Lowell Ahart 1996-5-9 7679 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31052  Pseudostellaria jamesiana M. S. Taylor 1978-8-19 1753 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  CHSC6051  Psidium guajava M. MacArthur 1968-6-22 276 Butte NE EP bld., ca. 30 ft., Chico State College. 60 Comment
  UC1609233  Psilocarphus tenellus Lowell Ahart 1993-7-6 7049 Butte about 1/4 mi w Lost Creek Reservoir (s side of dirt rd) 1036 Comment
  CAS-BOT-BC361916  Psilocarphus tenellus Lowell Ahart 1980-4-30 2140 Butte Along Hurleton-Swedes Flat Road 500 Comment
  POM86960  Ptelea angustifolia C. C. Bruce 1897-05 1803 Butte Forest- Ranch. Comment
  UCR190820  Ptelea crenulata 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
  SEINET10530092  Pteridium aquilinum Mary Susan Taylor 1980-4-27 Taylor 2549 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC32685  Pteridium aquilinum var. pubescens M. S. Taylor; L. Hanson 1981-3-31 3451 Butte SE side of Spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  CHSC61331  Pyrola aphylla Lowell Ahart 1993-7-22 7077 Butte On the west side of the dirt road, near Fall River, about 1/4 mile north-west of the bridge across Fall River, about 6 miles (air) north-east of Feather Falls. 1036 Comment
  UCD117816  Pyrola picta L. E. Hazeltine 1916-7-30 s.n. Butte Sierra Nevada. 1828 Comment
  CHSC108797  Pyrus communis Lowell Ahart 2012-4-9 17822 Butte About 20 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 1/2 mile east of the power lines, about 1 1/2 miles (air) northeast of Chico. 96 Comment
  UC2026861  Pyrus kawakamii Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18230 Butte On the north side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC105030  Quercus X morehus Lowell Ahart 1976-7-15 s.n. Butte Near edge of North Honcut Creek, 2 miles N and 3 miles E of Honcut 200 Comment
  UC2026893  Quercus acutissima Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  RSA726483  Quercus berberidifolia L. Ahart 2007-4-30 13707 Butte About 2 miles northwest of Concow Creek, about 2 miles northwest of Concow Reservoir. 484 Comment
  UC1135490  Quercus berberidifolia J. E. Sowder 1933-6-14 113 Butte .12 mi n 13 Mile House; Chico Quad. 609 Comment
  CHSC20967  Quercus chrysolepis M. S. Taylor 1975-9-12 907 Butte Ca. 500 ft w of Hwy 32, ca. 24 mi ne of Chico. 1066 Comment
  SEINET13953242 Image available Quercus chrysolepis A. A. Heller 1918-1 Butte Honey Run grade on a north slope in the digger pine and oak belt Comment
  JEPS113189  Quercus chrysolepis var. chrysolepis Lowell Ahart 2007-4-30 13702 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  JEPS115840  Quercus chrysolepis var. chrysolepis Lowell Ahart 2009-4-22 15578 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CAS-BOT-BC86117  Quercus dumosa John Thomas Howell 1955-6-15 30492 Butte 6 miles from Paradise on road to Pentz 426 Comment
  SEINET13953267 Image available Quercus dumosa A. A. Heller 1916-1 12649 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  CHSC97044  Quercus durata B. Castro; Plumas NF/Feather River botanists 2005-6-23 1490 Butte At E edge of ridge above Magalia, off E end of Hollywood Drive, in USFS parcel about midway between Paradise Lake and Magalia Res., overlooking Little Butte Ck. On isolated serpentine outcrop. 755 Comment
  UCD169291  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 759 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  RSA325123  Quercus kelloggii M. S. Taylor 1981-5-21 3763 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  HSC32641  Quercus lobata Gary S. Lester 1974-4-20 100 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  POM219009  Quercus vacciniifolia E. B. Copeland 626 Butte Jonesville. 1500 Comment
  UC600478  Ranunculus alismifolius var. alismifolius H. F. Copeland 1931-6-11 Butte Butte Creek Meadows Comment
  CAS-BOT-BC379223  Ranunculus aquatilis var. aquatilis Lowell Ahart 1970-4-4 s.n. Butte Honcut, Peter Ahart Ranch 150 Comment
  CHSC110446  Ranunculus arvensis B. Castro 2007-4-19 1620 Butte Sacramento Valley. Ca 0.7 mi S of Chico Airport, N of Sycamore Creek and W of Cohasset Rd. In a shallow depression off N edge of Large old spoils pile, ca 550 ft W of Cohasset Rd and 310 Ft N of levee along Sycamore Creek, in area of grazed grassland and scattered shallow vernal depressions. 57 Comment
  CHSC52948  Ranunculus canus Vernon Oswald 1983-2-14 73 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. about 0.7 mi e of the power lines. 115 Comment
  CHSC53701  Ranunculus hebecarpus Kirsten Tarp 1983-4-3 260 Butte S part of county, sw of Bangor on Bangor Park Rd., roadside. 103 Comment
  UC204953  Ranunculus hebecarpus A. A. Heller 1914-3-26 11232 Butte Canyon of Big Chico Creek 76 Comment
  CHSC29233  Ranunculus muricatus M. S. Taylor 1980-4-1 2416 Butte Drainage, between Notre Dam Blvd and Hwy 99, and the Skyway and Humboldt Rd, just e of Chico. 70 Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  HSC31873  Ranunculus muricatus David Johnson 1974-4-20 44 Butte Table Mtn. Comment
  POM99241  Ranunculus muricatus C. C. Bruce 1897-04 1890 Butte [No location data on label] 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
  CHSC85402  Ranunculus occidentalis John Dittes; Josephine Guardino 1992-5-7 477 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  SEINET10535983  Ranunculus occidentalis var. ultramontanus Mary Susan Taylor 1978-7-18 Taylor 1723 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC11810  Ranunculus uncinatus E. B. Copeland 1930-6-29 641 Butte Jonesville. 1500 Comment
  CHSC38035  Raphanus raphanistrum R. E. Preston 1982-11-13 366 Butte Along sides of Chico-Butte City Hwy, ca. 13 1/2 mi ssw of Chico. 30 Comment
  CHSC38052  Raphanus sativus R. E. Preston 1983-2-16 382 Butte At the SW corner of the intersection of Notre Dame Blvd and Forest Ave, Chico. 68 Comment
  UCD115181  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC59878  Rhamnus ilicifolia John Thomas Howell; Gordon H. True 1968-5-13 44334 Butte Cherry Hill Road at Rincon Trail, Brush Creek Canyon. Kern Plateau. 1463 Comment
  CHSC102219  Rhamnus ilicifolia Lowell Ahart 2009-6-30 15963 Butte South of a small drainage, along Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 386 Comment
  POM86208  Rhamnus ilicifolia C. C. Bruce 1897-05 1799 Butte Chico ion Humboldt road Comment
  RSA31115  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 miles below Centerville in the Sierra foothills Comment
  RSA719541  Rhamnus rubra Michael A. Vincent, K. Levings 2006-7-29 12885 Butte NE of Chico along Rt. 32. Comment
  CHSC33718  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-4-8 3505 Butte Serpentine ridge on n side of logging landing site just w of power lines, off logging road ca. 0.5 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  RSA107816  Rhamnus tomentella subsp. tomentella L. S. Rose 55097 Butte Magalia 732 Comment
  CAS-BOT-BC199747  Rhododendron occidentale var. californicum Clarence R. Quick 1952-6-29 52 -91 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  CAS-BOT-BC200684  Rhus aromatica Lewis S. Rose 1945-5-12 45026 Butte Richardson Springs 304 Comment
  CHSC51844  Rhus aromatica Steven Triano 1987-4-7 37 Butte Ca 20 ft S of Honey Run Rd ca 2.7 mi E of The Skyway, out of SE Chico. 91 Comment
  CHSC51845  Rhus aromatica Mike Pahl 1988-4-19 20 Butte 14.3 mi NE of Chico on Cohasset Hwy, 0.3 mi off the rd. 548 Comment
  CHSC44063  Rhynchospora californica L. P. Janeway 1988-6-14 2761 Butte NW side of cyn of Little Chico Cr ca 2 air mi S of Ten Mile House. 259 Comment
  CHSC11905  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Damp spots in woods near Butte Creek. 1550 Comment
  CHSC48902  Ribes nevadense Vernon Oswald 1984-4-9 1120 Butte Bryant Ravine Rd., 0.8 mi n of its jct. with Lumpkin Rd. near Feather Falls. 853 Comment
  CHSC11904  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville. 1500 Comment
  CAS-BOT-BC198964  Ribes roezlii var. roezlii A. A. Heller 1915-6-11 11970 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  POM53911  Rigiopappus leptocladus A. A. Heller, H. E. Brown 1902-5-12 5540 Butte Grade between Clear Creek and Paradise. Comment
  CHSC3496  Robinia pseudoacacia Roger Jaegel 1966-4-14 123 Butte Located four miles west of Forest Ranch. Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  JEPS53826  Rorippa W. L. Jepson 1927-6-25 12356 Butte Biggs 30 Comment
  CHSC113160  Rorippa curvisiliqua Lowell Ahart 2013-11-17 19261 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
  SBBG119803  Rorippa curvisiliqua L. Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, ca. 2 mi N and 0.5 mi E of Honcut, ca. 12 mi S of Oroville 31 Comment
  CHSC539  Rorippa curvisiliqua var. orientalis M. Anthony 1954-5-30 Butte Rag Dump 5, Concow. 609 Comment
  CHSC98952  Rorippa nasturtium-aquaticum Lowell Ahart 2008-5-21 14788 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS115373  Rorippa nasturtium-aquaticum Lowell Ahart 2009-6-3 15819 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersecti 232 Comment
  UC600715  Rorippa nasturtium-aquaticum H. F. Copeland 1920-5-23 221 Butte Jonesville Comment
  CHSC50655  Rorippa palustris var. hispida Lowell Ahart 1990-6-16 6516 Butte Below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC35648  Rorippa palustris var. occidentalis R. E. Preston 1982-4-7 232 Butte At bottom of irrigation ditch, on s side of Biggs-Princeton Hwy, 2.4 mi w of Biggs. 24 Comment
  CHSC82213  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  CHSC102956  Rosa californica Lowell Ahart 2009-8-3 16264 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  SEINET11910494  Rosa gymnocarpa P. Ahart, Ahart, L. 1983-1 4464 Butte T20N, R8E, Sec 5, along French Creek, 3mi N of Sly Creek Dam, N of Strawberry Valley 900 Comment
  CHSC116569  Rosa multiflora B. Castro 2016-4-15 2131 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca -.4 mi downstream (W) of its crossing under the Cohasset Hwy bridge. At moist lowest edge of bank on N side of channel, near a large cottonwood tree roughly opposite the confluence of Dry Creek. 55 Comment
  RSA754882  Rosa pisocarpa L. Ahart 2009-6-19 15921 Butte East side of Big Chico Creek, SW of the meadow, about 30 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 209 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  UC392208  Rosa pisocarpa subsp. ahartii E. B. Copeland 1929-7-19 Butte Jonesville 1550 Comment
  CHSC111371  Rubus armeniacus Lowell Ahart 2012-5-14 18055 Butte On dry deep soil, just west of Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. 74 Comment
  UCD166765  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 a Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  CAS-BOT-BC147106  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CHSC84739  Rubus glaucifolius L. P. Janeway; Christine Hantelman 2003-6-19 7850 Butte Northern Sierra Nevada Foothills. Along south edge of Middle Fork Feather River arm of Lake Oroville, half way between mouth of South Fork Feather River arm of the lake and mouth of Bean Creek. 280 Comment
  CHSC86141  Rubus glaucifolius John Dittes; Josephine Guardino 2002-6-21 620 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  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
  CHSC28912  Rubus laciniatus M. S. Taylor 1980-2-17 2362 Butte Along a dirt road by creek, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SEINET10483578  Rubus laciniatus Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4696 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC43134  Rudbeckia occidentalis Robert Banchero 1981-7-11 563 Butte 1 mi s of Coyote Gap. 1121 Comment
  CHSC75394  Rumex acetosella Lowell Ahart 1999-6-12 8090 Butte West of the south part of the dam, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  SEINET10479372  Rumex acetosella Mary Susan Taylor 1978-7-21 Taylor 1806 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CHSC33685  Rumex dentatus L. Ahart 1981-5-16 2804 Butte In low places on Graylodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC37090  Rumex obtusifolius subsp. agrestis L. Ahart 1982-9-13 3807 Butte On wet edges of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  SEINET10479779  Rumex obtusifolius subsp. agrestis Mary Susan Taylor 1978-7-21 Taylor 1824 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC33422  Rumex pulcher R. A. Schlising 1981-6-14 4082 a 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
  CHSC100897  Rumex salicifolius var. salicifolius R. A. Schlising; Lawrence Janeway 1988-8-2 4655 Butte Northern Butte County, north of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. 1139 Comment
  CAS-BOT-BC445664  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Above Jonesville 1700 Comment
  CAS-BOT-BC445782  Sagittaria longiloba Carl Wick 1988-6-17 s.n. Butte South of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton 39 Comment
  UC2026859  Salix babylonica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17804 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  RSA30394  Salix exigua Unspecified 11397 Butte Near Butte creek on the road between Durham and Nelson. Comment
  CHSC47485  Salix exigua var. hindsiana Lowell Ahart 1984-6-8 4676 Butte About 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown. 426 Comment
  JEPS119597  Salix exigua var. hindsiana Lowell Ahart 2012-4-9 17828 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UCD110804  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte Jonesville, by Butte Creek. 1500 Comment
  CAS-BOT-BC107837  Salix gooddingii C. R. Ball 1916-6-15 2069 Butte On bank of Chico Creek, Chico Comment
  JEPS122277  Salix gooddingii Lowell Ahart 2014-4-9 19347 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC125175  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CHSC108845  Salix lasiolepis Lowell Ahart 2012-3-9 17773 -A Butte On a gravel bar, middle of North Honcut Creek, 30 yards east of the floodgate, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 39 Comment
  JEPS119583  Salix lasiolepis Lowell Ahart 2012-3-9 17772 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  JEPS119606  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129581  Salix lasiolepis var. lasiolepis A. A. Heller 1914-4-27 11324 Butte Hills 8 miles north of Oroville, on the stony banks of a winter stream 8 miles north of Oroville Comment
  JEPS121898  Salix lemmonii Lowell Ahart 2014-7-10 19638 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  LA208858  Salix lemmonii E. B. Copeland; 1931-8-1 620 Butte Jonesville 1700.0 Comment
  POM219070  Salix lemmonii E. B. Copeland 1931-8-1 620 Butte Jonesville. Massed about the 'Lily Pond' 1700 Comment
  UC600413  Salix lemmonii H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville; , Kirby Meadows 1828 Comment
  CHSC94971  Salix melanopsis Lowell Ahart 2006-10-14 13507 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CHSC9691  Salix nigra E. L. Smith 1971-9-12 1063 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CAS-BOT-BC125949  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville 1550 Comment
  UC446422  Salix scouleriana E. B. Copeland 1931-6-11 Butte Kirby's Meadow 1800 Comment
  UC463020  Salix scouleriana E. B. Copeland 1931-8-1 Butte Abertine: upper lake 1800 Comment
  CHSC26719  Salsola tragus Hayes 1977-10-23 142 Butte In Lindo channel about 180 m w of its intersection with Mangrove Avenue in Chico. 35 Comment
  CHSC792  Salvia sonomensis M. Davidson 1929-5-19 Butte Cohasset road. 457 Comment
  CHSC11857  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville. 472 Comment
  CHSC4709  Sambucus mexicana R. Carter 1966-6-15 447 Butte One mi N of Bidwell Bar on Old Quincy Rd, ca. 9 mi. E of Oroville, growing along W side of road. 152 Comment
  CHSC81480  Sambucus mexicana Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe lake in Upper Bidwell Park 500 yards away from Big Chico Creek. 91 Comment
  POM219484  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville. 1550 Comment
  UC1575631  Sambucus mexicana Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2095 Butte near Chico Comment
  UC195403  Sambucus mexicana A. A. Heller 1914-4-27 11326 Butte banks of winter stream 8 mi n Oroville Comment
  UC478466  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville 1550 Comment
  JEPS115317  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC87440  Sanicula bipinnatifida R. D. Fischer; Jenny Marr 2004-4-2 104 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail south of Pine Trail junction. 396 Comment
  UC566789  Sanicula bipinnatifida Herbert L. Mason 1927-5-10 3713 Butte ne of Oroville (Table Mountain, Cherokee Mine); Table Mountain, Cherokee Mine Comment
  HSC43089  Sanicula bipinnatifida Maralyn O'Meara 1974-4-20 289 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  SEINET10840962  Sanicula crassicaulis Mary Susan Taylor, K. Tharp 1983-4-8 Taylor 4287 Butte T19N R4E se/ne sec 1. Oroville Dam quad. Immediate vicinity of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 1200 ft. 366 Comment
  CHSC82482  Sanicula graveolens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC99587  Sanicula graveolens L. P. Janeway 2008-5-26 9389 Butte Northern High Sierra Nevada. Low ridge near saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  UC635842  Sanicula graveolens Herbert F. Copeland 1938-7-4 Butte canyon of Jones Creek Jonesville 182 Comment
  CHSC118584  Sanicula tuberosa L. P. Janeway; Emily doe, Cynthia Baricevic 2017-4-27 12193 Butte Northern High Sierra Nevada. Plumas National Forest; top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  CHSC83902  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  UC398939  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville 1550 Comment
  CHSC43660  Sapium sebiferum Vernon Oswald 1987-8-15 3220 Butte Butte Creek Reserve, on the n side of Butte Creek e of the Skyway, e of Chico. On the edge of the creek. 73 Comment
  UC600604  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville Comment
  CAS-BOT-BC436855  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET10838427  Saxifraga fallax Mary Susan Taylor 1979-5-4 Taylor 1989 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  POM354597  Saxifraga marshallii M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC96216  Scandix pecten-veneris R. Fischer 2006-6-4 982 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along Guardian Trail and 1/4 south of the Pine Trail junction, adjacent a seasonal stream. 381 Comment
  CHSC57152  Schoenoplectus mucronatus L. P. Janeway 1988-6-29 2906 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of Skyway, 2.9 mi east of the Butte Creek bridge. 170 Comment
  CAS-BOT-BC111655  Schoenoplectus mucronatus M. K. Bellue 1947-6-1 s.n. Butte 2 miles south of Palermo. 35 Comment
  CHSC56798  Scirpus congdonii L. P. Janeway; C. A. Janeway 1986-9-13 1894 Butte Wide flat meadow along Humbug Summit Road ca 1 1/2 mi southwest of Humbug Summit. 1859 Comment
  CHSC56803  Scirpus congdonii L. P. Janeway 1988-6-25 2895 Butte Meadow adjacent to Bull Hill Road, 2.6 mi from Skyway. 1508 Comment
  CHSC41303  Scirpus diffusus S. C. Morey 1983-7-22 539 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CDA39136  Scirpus saximontanus G. D. Barbe, T. C. Fuller 1982-6-14 3676 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  SEINET10905684  Scirpus setaceus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4047 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC239956  Scribneria bolanderi Lowell Ahart 1980-5-4 2173 Butte Thermalito 65 Comment
  CAS-BOT-BC239959  Scribneria bolanderi Lowell Ahart 1980-5-4 2212 Butte Near Hurleton 600 Comment
  CAS-BOT-BC239963  Scribneria bolanderi Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC29300  Scribneria bolanderi J. D. Prouty 1980-4-25 80 .81 Butte N of Serene Lane ca. 3 mi. s of Oroville. 82 Comment
  JEPS117411  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 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
  CHSC19935  Scrophularia californica subsp. floribunda M. S. Taylor 1975-2-16 372 Butte Ca. 1.4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CAS-BOT-BC214186  Scutellaria Clare B. Hardham 1975-6-7 20426 Butte South end of Oroville Dam Comment
  CHSC43842  Scutellaria californica B. Castro 1987-5-9 86 Butte Just e of Cohasset Rd, 9.5 mi by road from Chico. 539 Comment
  CHSC70806  Scutellaria californica H. Durio; L. Gehrung 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off off USFS Rd 22N84. 914 Comment
  CHSC87793  Scutellaria californica Paul Maslin 2004-4-6 10 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Comment
  CHSC102849  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards 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. 436 Comment
  CHSC43688  Scutellaria siphocampyloides Vernon Oswald 1984-6-5 1254 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood control gate. 79 Comment
  CHSC51234  Scutellaria siphocampyloides Lowell Ahart 1977-5-20 1388 Butte Growing on the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  UC726728  Scutellaria siphocampyloides A. A. Heller 1927-5-30 14397 Butte Chico Creek Comment
  CHSC4014  Scutellaria tuberosa D. B. Joley 1967-4-16 24 Butte Few plants in a field, ca. 1/4 mile after you turn off 99, s of Chico turn left on first dirt road past Butte Creek Bridge on 99. 59 Comment
  CHSC39596  Sedella pumila Lowell Ahart 1983-4-10 3932 Butte About 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  CHSC457  Sedella pumila R. Carter 1964-3-23 63 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 250 yds. E of rd. along rim of table. 60 Comment
  CHSC458  Sedella pumila P. Delaplane 1965-3-16 2 Butte E. of US 99 ca. 14 mi. N. Chico. 30 Comment
  CHSC90600  Sedella pumila John P. McKeon 1980-4-24 12 Butte Ca. 30 m s of jct of Hwy 32 and Humboldt Rd. 20 m e of Hwy 32. 8.3 km e of Chico. 265 Comment
  UCD13206  Sedella pumila Charles Martin 1986-4-26 14 Butte California: Sutter Co. Sutter Buttes. Canyon SE of North Butte. R2E, T16 N, Sec 20, SW 1/4. Elev. ca. 600 ft. 182 Comment
  CHSC32684  Sedum albomarginatum M. S. Taylor; D. Hemphill 1981-3-18 3418 Butte N side of Pulga Rd, at its jct with Hwy 70 at Pulg ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  CHSC24945  Sedum spathulifolium M. L. McCrum 1976-4-27 20 Butte Pop. ca. 6.5 mi e of Chico, .1 mi w of Covered Bridge, along creek. 112 Comment
  CHSC87534  Sedum spathulifolium R. D. Fischer 2004-3-28 99 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail approx. 0.25 miles south of Pine Trail junction. Located on north facing cliff face. 396 Comment
  RSA638250  Selaginella hansenii Michael A. Vincent, Ethan H. Freid 1998-4-6 8116 Butte Table Mountain Comment
  CHSC42457  Senecio aronicoides Lowell Ahart 1987-5-22 5670 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC76039  Senecio aronicoides G. F. Hrusa; T. D. Wilfred 1997-5-7 13741 Butte Sierra Nevada. At summit of SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 750 Comment
  SEINET10474902  Senecio aronicoides Mary Susan Taylor 1981-4-16 Taylor 3546 Butte T21N R6E ne sec 30, Brush Creek quad. W side of 21N33Y.1, ca. 0.5 mi N of its jct with Zink Rd near Big Bald Rock, ca. 3 mi E of Lake Madrone, ca. 23 mi NE of Oroville. Yellow Pine Forest; 3400 ft. 1036 Comment
  SFV11419  Senecio aronicoides M. L. Vincent 1967-6-25 676 Butte 0.25 miles west of Paskenta Ranger Station._x000B_[NOTE: this locality is messed up. Paskenta Ranger Station is in Tehama County and habitat there doesn't match pine trees and meadow mentioned on labels and in Vincent notebook.] Comment
  CHSC86438  Senecio eurycephalus var. lewisrosei Jenny Marr 1994-6-13 82 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on serpentine outcrop belonging to LNF. Site approx. 0.3 miles north of Magalia Reservoir. 759 Comment
  RSA201477  Senecio eurycephalus var. lewisrosei J. T. Howell 1962-6-16 s.n. Butte Magalia 732 Comment
  JEPS119561  Senecio sylvaticus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey, John Dittes 2012-6-28 18234 Butte 10 yards south of Vallombrosa Avenue, northeast of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS119617  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte In Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  RSA712845  Senecio sylvaticus L. P. Janeway 2006-4-23 8558 Butte Northern Sierra Nevada Foothills. North Table Mountain; at head of northern drainage into Campbell Creek/Beatson Hollow, 600 m north-northeast of Phantom Falls. Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC47665  Senecio triangularis Lowell Ahart 1989-9-21 6389 Butte On the west side of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  UCD92598  Setaria parviflora John Thomas Howell 1959-9-20 34678 Butte eastern outskirts of Oroville. 60 Comment
  CHSC26447  Setaria pumila P. Moyer 1971-10-24 48 Butte CSUC Campus. Creek area behind Archeology Bldg. 'B. 60 Comment
  UCD92713  Setaria pumila L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CHSC47641  Setaria sphacelata Lowell Ahart 1977-8-14 1551 Butte In a slough, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC35323  Sherardia arvensis M. S. Taylor; K. Tharp 1982-4-8 4286 Butte Immediate vicinity of Oroville Dam Visitors Center, Oroville. 365 Comment
  SEINET10483281  Sibbaldia procumbens Mary Susan Taylor 1979-7-21 Taylor 2161 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  JEPS97960  Sidalcea diploscypha K. Andreasen 1998-6-30 277 Butte SW side of pond at end of Long Bar Rd., S side of Thermalito Diversion Pool Lake Lake Oroville State Recreation Area Comment
  UC1586587  Sidalcea diploscypha Vernon H. Oswald and Lowell Ahart 1991-5-31 4635 Butte on the sw side Glen Pond (Dan Beebe Trail in the Lake Oroville State Recreation Area, on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation ARea, sw side Glen Pond Comment
  JEPS100685  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  UCR133587  Sidalcea glaucescens H. F. Copeland 1930-7-20 1335 Butte Jonesville 1524 Comment
  CHSC90977  Sidalcea hartwegii Lowell Ahart 2005-5-11 11808 Butte Along Hendricks Ditch, near a small stream, open pasture field, about 1 1/4 miles south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 276 Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  UC725939  Sidalcea hartwegii A. A. Heller 1938-5-4 15061 Butte near the covered bridge on Butte Creek e Chico; near the covered bridge on Butte Creek e of Chico Comment
  UCSB63716  Sidalcea hartwegii Bufton, Gail 1990-4-17 Butte Ca. 50 m S of Butte Creek and 0.3 km w of Covered Bridge, 10.2 km ese of Chico 120 Comment
  RSA715558  Sidalcea hirsuta L. Ahart 2005-5-11 11792 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yard south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  CDA36507  Sidalcea hirsuta Butte County Ag. Comm. 1961-5-1 Butte Near Nelson. 0 Comment
  POM183155  Sidalcea oregana subsp. spicata H. F. Copeland 1318 Butte Jonesville. Comment
  CAS-BOT-BC213186  Sidalcea robusta E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CAS-BOT-BC213189  Sidalcea robusta A. A. Heller; H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek Comment
  JEPS114713  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry bare granite soil, 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
  UC455230  Silene californica Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC852813  Silene californica Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  UC185513  Silene gallica Mrs. R. M. Austin May, 1896 859 Butte Little Chico Creek Comment
  CDA33638  Silene gallica R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  CHSC4006  Silene laciniata subsp. californica J. W. Cherry 1967-3-29 Butte On hillside, ca. 100 yds. e. of end of Bidwell Park road. 182 Comment
  CAS-BOT-BC389288  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte About Chico Meadows 1219 Comment
  CHSC80520  Sinapis arvensis Vernon H. Oswald 2001-4-1 9993 Butte Grainland Rd (Pratt Grant Rd) 0.75 mi east of Seven Mile Lane, southwest of Chico. 30 Comment
  CHSC546  Sisymbrium officinale E. Canfield 1904-5-10 Butte Hooker Oak Field. 76 Comment
  UC203873  Sisyrinchium A. A. Heller 1914-7-23 11606 Butte Chico Meadows, at base of n slope Chico Meadows; Sierra Nevada 1219 Comment
  CHSC20110  Sisyrinchium bellum M. S. Taylor 1975-4-26 508 Butte Ca. 50 m ne of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC3517  Sisyrinchium bellum John Francis 1966-4-16 108 Butte 3.7 miles E. of covered bridge (Honey Run). Comment
  UC844610  Smilacina racemosa A. A. Heller 1915-6-11 11968 Butte Chico Meadows Sierra Nevada 1219 Comment
  CHSC28529  Solanum americanum M. S. Taylor 1979-9-28 2195 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC31473  Solanum americanum L. Ahart 1980-7-20 2471 Butte In a rd drain along the edge of the abandoned paved rd on the n side of the Suspension Bridge across Lake Oroville, n of Oroville. 330 Comment
  CDA5902  Solanum carolinense Sterling O. Mattoon 1968-8-2 Butte Nedry property, corner of Pentz Road & Wagstaff Road, Paradise. 0 Comment
  CHSC101306  Solanum parishii Lowell Ahart 2009-4-22 15595 Butte East side of Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC95297  Solanum physalifolium var. nitidibaccatum Lowell Ahart 2006-10-30 13517 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles southeast of Oroville. 31 Comment
  POM69612  Solanum umbelliferum R. M. Austin 1876-07 s.n. Butte American Valley. Comment
  CAS-BOT-BC364940  Solidago velutina subsp. californica Lowell Ahart 1977-11-15 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  UC195368  Solidago velutina subsp. californica A. A. Heller 1916-9-9 12656 Butte near Durham Comment
  CHSC39419  Soliva sessilis J. D. Jokerst 1984-4-7 1967 Butte Along the edges of a dirt road, top of North Table Mountain, north of Cherokee rd. Comment
  CHSC34696  Sonchus asper M. S. Taylor 1981-5-14 3713 Butte N side of Four Mile Ridge, s of Sly Creek, ca. 1.5 mi ne of Mt House on Oroville-Quincy Hwy. 853 Comment
  CHSC44899  Sonchus asper Lowell Ahart 1988-7-31 6155 Butte Along the road gutter, north of small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  JEPS124111  Sonchus oleraceus Lowell Ahart 2015-6-6 20206 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC157206  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte West of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  UCD92884  Sorghum R. J. Strong 1915-9-1 s.n. Butte Oroville. Comment
  CHSC2192  Sorghum halepense H. Silberman; D. Isaac 1949-5-31 Butte Chico. 57 Comment
  CDA43068  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley.; South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  JEPS98351  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 8388 Butte 4 mi NE of Honcut (100 yds SE of the barn, about 1/4 mi NE of Honcut Cemetery) 54 Comment
  CHSC50033  Spergularia rubra Lowell Ahart 1990-4-15 6461 Butte Near a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC94015  Sphenosciadium capitellatum R. Fischer 2005-9-5 661 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
  CHSC48918  Spiraea densiflora Vernon Oswald 1983-8-17 992 Butte On Humboldt Peak, n-e of Jonesville. 2158 Comment
  CHSC33639  Spiraea douglasii M. Merryman; R. Banchero 1979-9-2 31 Butte Humboldt Rd at Butte Creek, 5.3 mi ne of jct Hwy 32 and Humboldt Rd. At streamside. 1341 Comment
  CHSC43736  Spiraea douglasii Vernon Oswald 1983-7-6 821 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. In a meadow. 1325 Comment
  CHSC88186  Spiranthes romanzoffiana Lowell Ahart 2004-8-2 11325 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
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Sep 6 2011
  JEPS108131  Sporobolus creber Lowell Ahart 2005-10-22 12462 Butte Irrigated pasture, Daley Ranch, about 1 mile northeast of Honcut, about 13 miles south of Oroville 34 Comment
  CHSC42981  Stachys ajugoides var. rigida L. P. Janeway 1987-6-27 2352 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. Edge of road. 1554 Comment
  CHSC52067  Stachys ajugoides var. rigida B. Castro; L. P. Janeway, R. A. Schlising 1988-7-11 269 Butte Abundant in damp sands of Big Kimshew Ck along sw corner of Crane Valley. 1569 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
  JEPS118641  Stachys pycnantha B. Castro and L. P. Janeway 2002-8-11 1380 Butte Northern High Sierra Nevada. Along NW side of Hwy 70, 0.8 mi NE of Jarbo Gap; at roadside seep feeding unnamed ephemeral tributary of N. Fork Feather River. Berry Creek 7.5' Quad. Comment
  SBBG128189  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte drainage on the E side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  CHSC113251  Stebbinsoseris heterocarpa Lowell Ahart 2014-4-20 19389 Butte Near the bottom of rim cliffs, about 30 yards west of the small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  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
  JEPS113137  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  CHSC45773  Stephanomeria lactucina Vernon Oswald 1983-7-19 886 Butte Bull Hill Rd. 2.6 mi s of Butte Meadows. 1493 Comment
  SEINET10506970  Stipa Mary Susan Taylor 1980-4-18 Taylor 2506 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
  UCD115989  Streptanthus diversifolius Robert E. Preston 1986-4-29 539 Butte 8 km north of Oroville, on North Table Mountain. 396 Comment
  CHSC78132  Streptanthus drepanoides Lowell Ahart 2000-5-31 8420 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
  CHSC39048  Streptanthus longisiliquus Lowell Ahart 1983-6-30 4187 Butte About 3 mi SE of Stirling City, on dirt road on the west side of the West Branch of the Feather River; along the edge of the road. Section 10. 1100 Comment
  UCD78022  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CHSC35744  Streptanthus polygaloides R. E. Preston 1982-4-22 258 Butte Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 286 Comment
  CAS-BOT-BC87436  Streptanthus polygaloides Lincoln Constance 1941-5-28 2826 Butte Sierra Nevada Foothills. South Branch of the Feather River at magalia. 487 Comment
  SEINET10448521  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2700 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC93177  Streptanthus tortuosus var. orbiculatus L. P. Janeway 1994-6-6 4656 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
  CHSC93504  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-5-8 12582 Butte On basalt outcrops, about 1/3 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  CHSC62098  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  SEINET10784830  Symphoricarpos albus var. laevigatus Lowell Ahart 2007-5