Search Results — 2000 specimen records retrieved (1604 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  POM220653  Abies magnifica H. F. Copeland 1928-8-29 331 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  CHSC81447  Acer circinatum D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  CAS-BOT-BC21750  Achillea millefolium John Thomas Howell 1962-6-16 37581 Butte Pentz road 2 mi. s. of Magalia 609 Comment
  SEINET10904839  Achillea millefolium var. lanulosa Lowell Ahart 1985-5-15 Ahart 4991 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CAS-BOT-BC210631  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along edges of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mi. N and 3 mi. E of Honcut 50 Comment
  CAS-BOT-BC210643  Achnatherum lemmonii Lowell Ahart 1977-6-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA13884  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1997-5-8 13742 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS108542  Achnatherum lemmonii L. P. Janeway 2006-5-28 8638 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir 856 Comment
  UCD50598  Achnatherum lemmonii Elizabeth Wilson 1940-6-21 s.n. Butte Butte County, near De Sabla, California. Comment
  CHSC49578  Achnatherum occidentale subsp. californicum Vernon Oswald 1987-6-23 3010 Butte Philbrook Rd. 1.3 mi (odometer) w of the road to High Lakes. 1615 Comment
  JEPS119695  Achyrachaena mollis Lowell Ahart 2012-5-2 17951 Butte West of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  CHSC39980  Acmispon americanus var. americanus L. Ahart; P. Ahart 1983-7-24 4204 Butte Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 167 Comment
  CHSC108789  Acmispon brachycarpus Lowell Ahart 2012-4-9 17845 Butte Near the high east cliff edge of Big Chico Creek, about 5 yads west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 206 Comment
  CHSC58913  Acmispon nevadensis var. nevadensis Lowell Ahart 1992-8-2 6911 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  JEPS124393  Acmispon nevadensis var. nevadensis Lowell Ahart 2015-6-16 20229 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC28864  Acmispon parviflorus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 467 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
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Jan 19 2011
  CHSC82425  Acmispon parviflorus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC90393  Acmispon parviflorus Richard A. Nichols 1980-4-19 9 Butte 1 yd above current shoreline of w branch of Lake Oroville, ca. 500 yds n of Lime Saddle Marina boat ramp. 286 Comment
  CAS-BOT-BC412870  Aconogonon davisiae E. B. Copeland 1914-8-7 11663 Butte Summit east of Jonesville 2133 Comment
  HSC66268  Aconogonon davisiae M. S. Taylor 1979-6-21 2156 Butte W side of Humboldt Peak, Humboldt Summit 2155 Comment
  CHSC100925  Aconogonon phytolaccifolium R. A. Schlising; Pauleen Broyles 1986-8-5 4497 Butte Close to Plumas County line, at beginning of Scotts John Creek. 1889 Comment
  CHSC94350  Adenocaulon bicolor Lowell Ahart 2006-7-25 13053 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  RSA122230  Adenostoma fasciculatum var. fasciculatum A. E. Wieslander 1936-3-30 626 Butte Keefer Ridge 549 Comment
  CHSC25039  Adiantum aleuticum W. E. Hartman 1972-4-29 7 Butte Ca. 500 ft. n up wash from Centerville Rd. at 0.8 mi e of Centerville Cemetery. 249 Comment
  CHSC34680  Adiantum capillus-veneris M. S. Taylor 1980-2-17 2364 Butte Along a creek at an old mine site, ca. 1/2 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  SEINET7728124  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  SEINET10529855  Adiantum jordanii Mary Susan Taylor 1980-4-1 Taylor 2422 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
  UC42033  Adiantum jordanii Miss E. P. Patton Dec. 1879 Butte near Fall River Fall River Comment
  CAS-BOT-BC110725  Aegilops triuncialis Lowell Ahart 1976-5-2 s.n. Butte Peter Ahart Ranch. Honcut. Comment
  JEPS120088  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte On the south side of Beastson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC77485  Aesculus californica Tim Stofer 1997-4-9 1 Butte Located on the creek side, 100 ft. from the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  JEPS115572  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South of a small drainage, on the west side of Guardians Trail, just northwest 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
  CAS-BOT-BC29495  Agoseris Clare B. Hardham 1978-4-17 21564 Butte Humbery Road north of Paradise Comment
  CAS-BOT-BC29614  Agoseris grandiflora var. grandiflora Helen M. Edwards 1917-6-16 s.n. Butte De Sabla Comment
  CAS-BOT-BC29615  Agoseris grandiflora var. grandiflora Lowell Ahart 1988-6-21 6054 Butte Along Poe Power House Road, about 3/4 mi N of Poe Power House, about 1 1/4 mi SE of Jarbo Gap 426 Comment
  CAS-BOT-BC22968  Agoseris heterophylla Lowell Ahart 1981-4-24 2788 Butte Near North Honcut Creek 150 Comment
  CHSC83884  Agoseris heterophylla var. cryptopleura Lowell Ahart 2003-4-10 10053 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
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Jan 19 2011
  CDA14067  Agoseris retrorsa G. F. Hrusa, T. D. Wilfred 1997-5-1 13715 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Comment
  CHSC42473  Agoseris retrorsa Lowell Ahart 1987-5-9 5603 Butte Along Pulga Road, about 2 miles south-west of Bardees Bar along the North Fork of the Feather River, about 4 1/2 miles south-west of Pulga. 365 Comment
  CHSC87216  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 35 Comment
  JEPS98367  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte 13 air miles NE of Oroville (N side of Bean Creek Road, about 1/4 mi SE of Little Bald Rock, 1 1/4 mi NE of Big Bald Rock, 4 air miles NE of Madrone Lake) 1066 Comment
  CAS-BOT-BC127335  Agrostis exarata M. S. Taylor 1978-7-19 1744 Butte Cherry Hill Campground, on S side of Old Humboldt Rd., ca. 2 mi SW of Jonesville. 1524 Comment
  JEPS113180  Agrostis hendersonii Lowell Ahart 2007-5-22 13899 Butte Along swales, on Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  RSA715555  Agrostis microphylla L. Ahart 2005-5-11 11793 Butte 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. 359 Comment
  CAS-BOT-BC138773  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows. 1219 Comment
  CHSC69733  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte On the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  CHSC61363  Agrostis stolonifera Lowell Ahart 1993-7-23 7105 Butte Along the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC113417  Agrostis thurberiana Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CAS-BOT-BC138577  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte At the summit east of Jonesville. 2133 Comment
  CAS-BOT-BC138411  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2191 Butte Near Hurleton. 600 Comment
  CDA1711  Aira elegantissima L. Ahart 2000-5-17 8363 Butte 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. On the south margin of Thermalito Afterbay, on the north side of the poor dirt road. 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
  CHSC31016  Alisma triviale M. S. Taylor 1978-7-22 1850 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale. 30 Comment
  CHSC31524  Allium amplectens L. Ahart 1975-5-12 763 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC49471  Allium amplectens Vernon Oswald 1988-6-13 3375 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. 426 Comment
  JEPS117407  Allium amplectens Lowell Ahart 2010-5-23 16729 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  UCD138474  Allium amplectens H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  HSC38141  Allium amplectens Thomas W. Nelson, Jane P. Nelson 1976-5-9 2446 Butte Intersection of Palermo Rd. and SR 70, 4 mi. S of Oroville Comment
  SEINET8112090  Allium amplectens W. Roderick 1967-4-15 s.n. Butte SW of Paradise. 457 Comment
  POM219305  Allium campanulatum H. F. Copeland 1931-6-9 1511 Butte Jonesville. Comment
  UC843256  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte summit above Jonesville 2133 Comment
  CAS-BOT-BC465440  Allium campanulatum E. B. Copeland 1937-5-30 s.n. Butte Jonesville Comment
  SEINET10472034  Allium campanulatum Mary Susan Taylor 1980-5-31 Taylor 2754 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC466716  Allium cratericola C. C., Mrs. Bruce 1899-1-1 1901 Butte Doe Mill Comment
  RSA0105547  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  UCD138550  Allium jepsonii B. Castro; Plumas NF botanists 1994-6-28 515 Butte ca. 0.4 mile south of Pulga, west side of Pulga Road, ca. 0.4 mile north of its junction with Hwy 70 by the Pulga Brige. 487 Comment
  CHSC102181  Allium peninsulare George W. Hartwell 2009-4-22 Butte Concow Road, approx. 3-4 miles above Concow Reservoir on serpentine ridge burned by wildfire in summer 2008. 860 Comment
  SBBG17065  Allium peninsulare M. Vincent 1962-4-15 193 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  SEINET12050260  Allium peninsulare Unknown 1985-1 5003 Butte 1/8 mi E of the dirt road, about 1.5 mi NE of Concow of Reservoir 732 Comment
  POM110048  Allium peninsulare var. peninsulare C. C. Bruce 1897-03 1900 Butte Chico. Comment
  CAS-BOT-BC132078  Allium peninsulare var. peninsulare Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut, along North Honcut Creek 50 Comment
  CHSC107294  Allium sanbornii var. sanbornii L. P. Janeway; Chris Cristofferson 2011-8-3 10627 Butte Northern High Sierra Nevada. Plumas National Forest; top edge of large northwest-facing granite outcrop near ridge top, overlooking Martin Creek; 1.6 air km northeast of Madrone Lake. 774 Comment
  CAS-BOT-BC265  Allocarya conjuncta Dr. E. B. Copeland 1903-5-15 s.n., distributed as Baker's 3046 . Butte Chico Comment
  UC398943  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville Comment
  SEINET10496947  Allophyllum integrifolium Lowell Ahart 1983-8-16 Ahart 4298 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC21021  Alnus rhombifolia M. S. Taylor 1975-10-4 961 Butte On se corner of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC40340  Alnus rhombifolia Lowell Ahart 1985-1-27 4837 Butte Around Kunkle Res., about 2 miles south of Paradise. 550 Comment
  OBI69161  Alnus rhombifolia Kari Fisher 2000-11-10 46 Butte Chico State Campus, along Big Chico Crk 79 Comment
  CAS-BOT-BC138170  Alopecurus aequalis var. aequalis Lowell Ahart 1987-5-27 5702 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC50066  Alopecurus carolinianus Lowell Ahart 1990-4-15 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 289 Comment
  CHSC82268  Alopecurus carolinianus Lowell Ahart 2002-4-15 9494 Butte Just above the water on the east side of a canal, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  RSA299120  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UCD55884  Alopecurus carolinianus L. Ahart 1977-4-19 s.n. Butte Honcut, Peter Ahart Ranch. 50 Comment
  CHSC103737  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  UCD169922  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte North Table Mountian, about 1/4 mile south of the parking area. About 4 1/2 miles (air) northeast of Oroville. 371 Comment
  SEINET10507155  Alopecurus saccatus Lowell Ahart 1991-5-16 Ahart 6654 Butte On the bottom of a small shallow vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  CHSC46329  Amaranthus albus Lowell Ahart 1989-5-23 6258 Butte About 1 mile north-west of Bangor, along the edges of Avocado Road, about 1/2 west of the Oroville Bangor Highway. 213 Comment
  CHSC94649  Amaranthus albus Lowell Ahart 2006-9-28 13364 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
  JEPS120591  Amaranthus albus Lowell Ahart 2013-11-18 19280 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC54559  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte Gray Lodge Waterfowl Management Area, south-west of Gridley, about 1/2 mile south-east of the intersection of Pennington Road and Rutherford Road. 21 Comment
  CHSC47964  Amaranthus deflexus Vernon Oswald 1983-10-10 1062 Butte Bidwell State Park on the e side of the Sacramento R. w of Chico. The Indian Fishery at the jct. Of W. Sacramento Ave and River Rd. Comment
  CDA3282  Amaranthus retroflexus L. 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. Comment
  SEINET10478792  Amaranthus retroflexus Mary Susan Taylor 1975-10-3 Taylor 930 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC100492  Ambrosia psilostachya Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15438 Butte On the south bank of Lindo Channel, about 50 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  CHSC45625  Ambrosia psilostachya Vernon Oswald 1987-8-9 3195 Butte Hwy 32 N of Forest Ranch at the 35.0 mi road marker, 3 mi S of Lomo. 1158 Comment
  CHSC66835  Ambrosia psilostachya Vernon H. Oswald 1996-8-29 8245 Butte Sacramento River National Widlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the southwest corner of Tract 3.4, Sanctuary II. 32 Comment
  UCR136869  Ammannia coccinea Beecher Crampton 1957-9-17 4631 Butte Sacramento Valley, 5 miles northwest of Biggs, Biggs Rice Experiment Station [955 Butte City Hwy, Hwy 162, 2.5 mi. west of Hwy 99] 30 Comment
  RSA688938  Ammannia coccinea L. Ahart 1986-11-9 5442 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  CAS-BOT-BC213948  Amsinckia A. A. Heller 1921-5-9 13551 Butte Field above Centerville Comment
  CHSC3188  Amsinckia intermedia Dona Kingsford 1966-3-3 Butte 1.3 miles south west of Hooker Oak Tree in a dry open field, Chico. Comment
  UC725509  Amsinckia lycopsoides A. A. Heller 1930-3-23 15356 Butte grade toward Paradise just beyond Pentz 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
  CHSC97535  Andropogon virginicus var. virginicus L. P. Janeway 2007-8-6 9154 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. 776 Comment
  CHSC262  Anthemis cotula B. Richardson 1929-5-25 Butte Chico. Comment
  SEINET10832444  Antirrhinum breweri Lowell Ahart 1985-6-30 Ahart 5073 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CHSC75987  Antirrhinum cornutum L. P. Janeway 1999-7-17 6503 Butte Slope on northwest side of Humboldt Road 2.1 mi northeast of Hwy 32; northwest edge of Carpenter Ridge. 1365 Comment
  UCD123429  Antirrhinum cornutum L. E. Hazeltine 1916-6-23 s.n. Butte U.S. Plant Garden, Chico. Comment
  CHSC48967  Antirrhinum leptaleum Vernon Oswald 1985-6-26 1868 Butte West side of Forbestown Rd. ca. 200 ft s of Black Bart Rd. 743 Comment
  JEPS122292  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 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
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 286 Comment
  CHSC24677  Aphyllon purpureum C. E. Stopher 1976-4-15 22 Butte 1.6 km nw of Forest Ranch. 579 Comment
  CHSC42125  Aphyllon purpureum Lowell Ahart 1980-5-29 2359 Butte On rock slides along the road south of Jordan Creek, about 2 1/2 miles north-east of the Oroville Quincy Highway, about 5 miles north-east of Mountain House. 1005 Comment
  CAS-BOT-BC392108  Aquilegia formosa A. A. Heller 1915-6-25 12017 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC392112  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  UC436300  Aquilegia formosa E. B. Copeland 1930-7-12 Butte above Jonesville; head of Butte Creek area 1800 Comment
  CHSC28418  Aralia californica M. S. Taylor 1979-10-5 2227 Butte Along stream entering Paradise Lake on se side, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC110037  Arbutus menziesii Lowell Ahart 2012-10-28 18530 Butte North of Big Chico Creek, northwest of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS115639  Arbutus menziesii Lowell Ahart 2009-8-23 16297 Butte On the west side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SBBG50849  Arbutus menziesii D. B. Marcum 1969-4-12 38 Butte Yankee Hill, Rd 70 640 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
  UC444991  Arceuthobium campylopodum E. B. Copeland July, 1930 Butte w Willow Creek 1500 Comment
  CHSC4728  Arceuthobium occidentale R. Carter 1966-6-12 423 Butte Found 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 1/8 mi. W off Feathervale; Growing parasitically on Pinus sabiniana, 50 yds W of house. 243 Comment
  SEINET10848278 Image available Arctostaphylos laxiflora A. Arthur Heller 1940-2-6 Heller 15492 Butte Along the railroad near the Wagstaff road, Paradise. A variation form the type, collected nearby. Comment
  CAS-BOT-BC24437  Arctostaphylos manzanita J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1684 Butte Top of North Table Mtn. at its nw. corner. Center of w. edge section 32. Comment
  RSA381140  Arctostaphylos manzanita J. T. Howell 1975-6-15 51111 Butte Paradise, at Skyway & Wagstaff Road. 610 Comment
  SEINET10841467  Arctostaphylos manzanita Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3374 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  SEINET11986400  Arctostaphylos manzanita Unknown 1977-1 15 Butte 16 mi NW of Chico on Cohasset Rd 10 yds W of roadside rocky soil 518 Comment
  CAS-BOT-BC24413  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1914-1-10 11152 Butte Common in the canyon of Big Chico Creek e. of Chico, especially on the n. slope. Comment
  CHSC31916  Arctostaphylos manzanita subsp. manzanita M. S. Taylor; E. Pierce 1981-1-29 3374 Butte Cohasset Ridge SW of Cohasset Hwy, ca. 1 mi S of Cohasset. 60 Comment
  SBBG28822  Arctostaphylos manzanita subsp. manzanita H. F. Copeland 1932-6-24 A 8 Butte Humboldt Grade, about 12 mi from Chico Comment
  CAS-BOT-BC24298  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte Near Forest Ranch Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  CHSC109062  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-4-30 17941 Butte On the north side of Guardian Trail, about 200 yards west of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 397 Comment
  CAS-BOT-BC38609  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte On the Neal road west of Optimo Lodge, between Paradise and Magalia. Comment
  CAS-BOT-BC38610  Arctostaphylos mewukka subsp. truei A. A. Heller 1949-2-6 15490 Butte Neal Road at Paradise in the game refuge. Comment
  UC726236  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-19 15501 Butte on the Neal Road w Optimo Lodge (between Paradise and Magalia) Comment
  CAS-BOT-BC45565  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 a Butte Jonesville. On ridge e. of the Summit. 640 Comment
  POM219294  Arctostaphylos patula H. F. Copeland 1928-6-5 223 Butte Jonesville. 1524 Comment
  SBBG60044  Arctostaphylos patula E. B. Copeland 1932-6-29 A 7 Butte The Summit, Jonesville Comment
  SEINET10973497  Arctostaphylos patula Mary Susan Taylor 1974-5-20 Taylor 255 Butte Ca. 50 ft N of Skyway to Paradise, ca. 16 mi NE of Chico, on Burton's Mesa. 244 Comment
  SEINET11995502  Arctostaphylos truei W. Knight, Knight, I.; Knight, T. 1988-1 6303 Butte Paradise at Berkshire Way & Bille Road just off The Skyway 274 Comment
  UCD52812  Arctostaphylos viscida John Thomas Howell; Lowell Ahart 1976-4-1 51540 Butte In foothill woodland south of Cherokee on road to Oregon City, Butte Co. Comment
  CAS-BOT-BC47384  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51097 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC47385  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51096 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48287  Arctostaphylos viscida subsp. viscida R. R. Kehlor 1951-4-14 25 Butte foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road. Comment
  JEPS113134  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 46 Comment
  RSA636985  Arctostaphylos viscida subsp. viscida Jon E. Keeley 1983-6-27 7814 Butte Kunkle Reservoir, north of Highway 70 on Magolia-Pentz Road. Comment
  UC1121438  Arctostaphylos viscida subsp. viscida J. E. Sowder 1933-6-20 89 Butte 1 1/2 mi se Paradise; Chico Quadrangle Comment
  CDA31421  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. Comment
  CHSC45202  Aristida oligantha Lowell Ahart 1977-7-14 1465 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC4665  Aristolochia californica R. Carter 1966-4-11 336 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
  JEPS119555  Aristolochia californica Lowell Ahart 2012-2-22 17756 Butte About 50 feet from Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA416042  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honeyrun road, 1/2 mile west of Paradise 579 Comment
  UC143064  Aristolochia californica Dr. E. B. Copeland 1903-4-10 3044 Butte Chico Comment
  UC204461  Aristolochia californica A. A. Heller 1914-3-12 11195 Butte Big Chico Creek Canyon e. of Chico; Big Chico Creek Canyon 68 Comment
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Feb 17 2016
  CHSC44894  Arnica discoidea Lowell Ahart 1988-7-31 6161 Butte About 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  CHSC42852  Arrhenatherum elatius Lowell Ahart 1987-5-27 5719 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  JEPS110512  Artemisia douglasiana Lowell Ahart 2006-10-12 13502 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  UC600722  Artemisia douglasiana H. F. Copeland 1927-9-3 1114 Butte Jonesville 1524 Comment
  CAS-BOT-BC400631  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SEINET10573068 Image available Asarum hartwegii A. Arthur Heller 1915-4-12 Heller 11809 Butte Near Cohasset, near the upper limit of the digger pine belt, on cool, shaded stream banks under trees of Quercus Kelloggii. Comment
  CHSC51850  Asclepias speciosa L. P. Janeway 1988-6-5 2728 Butte Cyn of Big Chico Cr ca 1 mi NE of the end of Upper Park Rd. 213 Comment
  CHSC23404  Aspidotis californica M. S. Taylor 1976-3-6 1008 Butte Above Macabes Creek, ca. 50 ft e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CAS-BOT-BC65917  Aspidotis densa John Thomas Howell 1955-6-14 30464 Butte Magalia 731 Comment
  CHSC24898  Aspidotis densa E. Rilla 1976-4-4 19 Butte Scattered on n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 Comment
  CHSC40388  Aspidotis densa Lowell Ahart 1985-5-15 4999 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CAS-BOT-BC99219  Aster M. S. Taylor 1977-11-12 1537 Butte By Big Chico Creek, at end of Upper Bidwell Park, ca. 10 mi e of Chico 304 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
  CHSC80525  Astragalus tener var. ferrisiae Lowell Ahart 2001-4-15 8721 Butte About 15 feet southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC66022  Athyrium filix-femina var. cyclosorum H. F. Copeland 1920-8-2 199 Butte by Butte Creek 1676 Comment
  CHSC84418  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-8-26 10544 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 mile (air) southwest of the Sly Creek Reservoir Dam. 996 Comment
  SBBG28169  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 Butte Jonesville 1600 Comment
  JEPS87173  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte about 1/6 mi e of the Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  POM143745  Athysanus pusillus C. F. Baker 1903-4-10 3027 Butte Chico. Comment
  UC1191306  Atriplex heterosperma Herbert L. Mason, Verne Grant 1946-8-14 13034 Butte canal near big pond Sacramento Outing Club (Butte Sink); canal nr big pond on Sacramento Outing Club, Butte Sink Comment
  CAS-BOT-BC311786  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley 35 Comment
  UCSB64019  Atriplex lentiformis Ahart, Lowell 1981-11-6 Butte near the entrance to the Gray Lodge Waterfowl Management Area, just west of Pennington Road, about 12 miles south-west of Gridley 30 Comment
  CHSC27232  Aucuba japonica P. Moyer 1972-3-18 141 Butte Front entrance of Bidwell Mansion. 60 Comment
  CAS-BOT-BC146177  Avena barbata Lowell Ahart 1987-5-6 5548 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CAS-BOT-BC146180  Avena barbata A. A. Heller 1914-3-18 11207 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CHSC101803  Avena fatua Lowell Ahart 2009-5-8 15665 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  SEINET263348  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Ca 1/12 miles NW of the West Branch Bridge across Lake Oroville; near the end of the dirt road that leads to Lake Orovil 271 Comment
  JEPS111348  Azolla filiculoides R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  JEPS127249  Azolla microphylla Lowell Ahart 2016-9-4 21342 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CAS-BOT-BC98621  Baccharis pilularis unspecified 1929-11-1 s.n. Butte Cultivated at Chico U.S. Experimental Station 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
  SD48506  Barbarea verna E. K. Balls 1957-5-22 22517 Butte Southwest shore, Lake Almanor, just beyond Big Meadows Dam. 1399 Comment
  HSC93350  Bergia texana L. Ahart 1995-7-15 7594 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 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
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC93964  Bistorta bistortoides R. D. Fischer 2004-6-20 759 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 collected from wet portion of Chico Meadows north of pond. 1371 Comment
  NY31004  Blennosperma californicum Mrs. C. C. Bruce 05 1898 2074 Butte 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
  CHSC33407  Boechera platysperma R. E. Preston 1981-7-8 103 Butte Ca. 15 m e of Humboldt Rd, ca. 4.2 km nne of Jonesville. 1970 Comment
  CHSC36678  Boechera platysperma R. E. Preston 1982-7-21 349 Butte Ca. 1 mi se of Philbrook Reservoir. 1972 Comment
  CHSC66455  Bolboschoenus glaucus Vernon H. Oswald 1996-6-10 7757 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CAS-BOT-BC75492  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, southwest of Gridley. 35 Comment
  CHSC43058  Boykinia major L. P. Janeway 1987-6-26 2321 Butte SW end of Logue Meadows. 1325 Comment
  CDA1772  Brachypodium distachyon L. P. Janeway, J. Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills; Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km WNW of Canyon Creek Bridge. Comment
  JEPS120578  Brachypodium distachyon L. P. Janeway 2012-6-2 10840 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  RSA739617  Brachypodium distachyon L. P. Janeway, B. Castro 2007-5-19 8980 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 99 Comment
  SEINET10661802  Brachypodium distachyon Lowell Ahart 1987-5-9 Ahart 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 305 Comment
  RSA0060844  Brickellia californica Lowell A. Ahart 2012-10-20 18496 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  UC1594553  Briza maxima Lowell Ahart 1992-5-9 6767 Butte about 2 air mi n. Oroville (on w side of a small stream, e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  CHSC35632  Briza minor R. E. Preston 1982-3-27 213 Butte SE corner of Larkin Rd and Oro Dam Blve int, Oroville. 51 Comment
  CHSC52148  Briza minor Donald M. Burk 1978-4-18 118 Butte 100 ft s of intersection of Broyles Road and Hwy 99, ca. 11 mi n of Chico. 59 Comment
  SEINET10507330  Briza minor Mary Susan Taylor 1978-4-14 Taylor 1555 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  SEINET10863379  Brodiaea A. Arthur Heller 1941-5-9 Heller 16105 Butte Roadside banks along the Clark Road to Paradise, below the Clear Creek school house. Comment
  CAS-BOT-BC482213  Brodiaea californica subsp. californica Agnes W Purnell 1923-5-1 s.n. Butte 1.7 mi. se. of Big Butte Creek, U.S. Hwy. 99 E Comment
  CAS-BOT-BC483077  Brodiaea elegans subsp. elegans James McMurphy 1914-6-14 s.n. Butte Wallace Comment
  CHSC100803  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-3 4571 Butte SE of Stirling City at Flea Valley; dry edge of grassy meadow and at roadside. 1118 Comment
  CAS-BOT-BC486486  Brodiaea sierrae Lowell Ahart 1983-6-15 4053 Butte Peter Ahart Ranch, Honcut, California. Near large rocks on flood plains along the edges of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut. 50 Comment
  SEINET10932607  Brodiaea volubilis H. E. Brown 1897-5-1 Brown s.n. 1897 Butte Collected near Clear Creek. 175 feet alt. Comment
  JEPS103478  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the S side of Central House Road, ca 80 yards E of the bridge across Whyman Ravine, ca 1/4 mile E of Highway 70, ca 12 miles SW of Oroville. 27 Comment
  UCD58286  Bromus carinatus A. A. Beetle 1941-6-27 2741 Butte 20 miles northeast of Chico. Comment
  CDA31576  Bromus carinatus var. carinatus L. Ahart 2004-7-23 11301 Butte North of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. Comment
  JEPS106169  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 692 Comment
  CAS-BOT-BC148731  Bromus carinatus var. marginatus John Thomas Howell 1962-6-15 37489 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC156075  Bromus diandrus John Thomas Howell 1967-6-22 42627 Butte Sierra Nevada. Magalia. 701 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
  SEINET6778858  Bromus diandrus H. C. Jansen 1984-1-5 Butte Chico Comment
  CAS-BOT-BC155462  Bromus hordeaceus Lowell Ahart 1987-5-6 5551 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  CHSC4379  Bromus japonicus M. M. Gregg 1966-5-25 177 Butte Intersection of Hwy. 99E midway and Park Ave. s of Chico. SE 50-80 ft off intersection to creek beside bridge. Comment
  CHSC102173  Bromus laevipes Lowell Ahart 2009-5-30 15804 Butte On dry rocky soil, on the north side of Ten Mile House Road, just southeast of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway32 and Ten Mile House Road, about 10 miles northeast of Chico. 425 Comment
  CHSC87913  Bromus laevipes Lowell Ahart 2004-5-27 10958 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  SEINET10520260  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  UCD59015  Bromus madritensis John Thomas Howell; Gordon H. True 1967-6-11 42558 Butte Sierra Nevada. On northwest side of Feather River Canyon near Pulga Bridge. Comment
  CHSC75328  Bromus madritensis subsp. madritensis Lowell Ahart 1999-5-24 8078 Butte Along the sides of the museum, Butte County Historical Society museum, 2335 Baldwin Avenue, Oroville. 60 Comment
  CHSC30695  Bromus madritensis subsp. rubens M. S. Taylor 1980-5-27 2674 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  UC203669  Bromus madritensis subsp. rubens A. A. Heller 1914-4-11 11279 Butte 8 mi n of Oroville Comment
  CHSC65610  Bromus orcuttianus L. P. Janeway 1995-7-27 4877 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 Comment
  JEPS87478  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte about 1 mi w of Lost Creek Reservoir 1188 Comment
  SEINET4404362  Bromus rubens J. Nachlinger 1984-4-8 922 Butte Table Mountain 4 miles N of Oroville 366 Comment
  CHSC65210  Bromus sterilis Lowell Ahart 1995-5-30 7576 Butte Along the edge of the dirt road, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CDA13291  Bromus suksdorfii G. F. Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Plumas National Forest; Occasional individuals on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC88168  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows. 1912 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  JEPS94986  Calamagrostis canadensis Lowell Ahart 1997-7-11 7757 Butte about 4 air mi ne of Stirling City (near the w edge of small bog, e of the dirt road, about 1/4 air mi e of Bald Mountain) 1676 Comment
  JEPS114726  Calandrinia ciliata Lowell Ahart 2008-5-8 14719 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
  CAS-BOT-BC438359  Calandrinia ciliata A. A. Heller 1914-4-13 s.n. Butte Hills 8 miles north of Oroville Comment
  SEINET4169755  Calliprora scabra A. A. Heller 1938-4-14 15032 A Butte Treeless summit of T Able Mountain north of Oroville in thin clay soil . Comment
  JEPS117213  Callitriche marginata Lowell Ahart 2010-5-16 16687 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  SEINET10457154  Callitriche marginata Mary Susan Taylor 1978-4-14 Taylor 1560 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CAS-BOT-BC80354  Calocedrus decurrens John Thomas Howell 1962-6-15 37433 Butte Magalia 731 Comment
  CAS-BOT-BC80355  Calocedrus decurrens Lowell Ahart 1967-2-10 s.n. Butte Near Challenge 762 Comment
  CHSC33953  Calocedrus decurrens M. S. Taylor 1981-8-15 4182 Butte On n side of Skyway, Inskip. 1463 Comment
  CHSC38252  Calocedrus decurrens Vernon Oswald 1982-12-30 40 Butte Upper Bidwell Park, Chico, along Yahi Trail near Chico Creek e of Brown's Hole. 195 Comment
  NY43613  Calocedrus decurrens S. Bianco 1995-11-9 1051 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET12046117  Calochortus albus Unknown 1978-1 12 Butte Butte Creek Canyon, 3.5 mi up from the Skyway, 300 yd in front of gaging station 122 Comment
  UC3356  Calochortus albus Carl Purdy 1821-1 Butte near Ukiah; Oroville Comment
  UC600459  Calochortus leichtlinii H. F. Copeland 1932-7-24 Butte sw of Butte Creek Meadows; Jonesville 1800 Comment
  CHSC20263  Calochortus luteus Linda Homze 1972-4-24 6 Butte Collected at Salmon Hole in upper Bidwell Park. Comment
  RSA377381  Calochortus luteus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CAS-BOT-BC492565  Calochortus minimus E. B. Copeland 1929-7-21 353 Butte Jonesville 1550 Comment
  UC725774  Calochortus monophyllus A. A. Heller 1939-4-10 15372 Butte Comment
  CAS-BOT-BC492599  Calochortus monophyllus Lowell Ahart 1985-3-22 4849 Butte Foothill Woodland. About 1/2 mile north-east of the west Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oville 450 Comment
  CHSC33858  Calochortus nudus J. D. Jokerst; B. Banchero, R. A. Schlising 1980-4-16 852 A Butte Chico meadows, ca 100 met N of Scout Rd, 1.1 mi W of it's jct with Humboldt Rd. 1341 Comment
  CHSC2465  Calochortus tolmiei P. Delaplane 1965-5-4 52 Butte South side of Concow Road. South side of Lake Concow. 1219 Comment
  CHSC77453  Calochortus tolmiei Laura Bogni 1997-4-5 12 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  CAS-BOT-BC494318  Calochortus tolmiei Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CAS-BOT-BC494347  Calochortus tolmiei Lowell Ahart 1985-5-15 5000 Butte On dry rocky red serpentine soil, east of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  SEINET12050638  Calochortus tolmiei Unknown 1981-1 6 Butte Paradise, ca 0.25 mi E of Pearson & Pentz intersection on W side of Feather River Canyon (W branch) 579 Comment
  CHSC46245  Calycadenia fremontii Vernon H. Oswald 1989-4-27 3751 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  CAS-BOT-BC273293  Calycadenia fremontii H. M. Hall 1930-8-11 12875 Butte Humboldt Road, 8.2 miles from Chico 381 Comment
  CAS-BOT-BC270001  Calycadenia multiglandulosa Lewis S. Rose 1937-6-10 37358 Butte Hurleton 579 Comment
  CHSC46914  Calycadenia multiglandulosa Lowell Ahart 1980-6-19 2390 Butte Along the edge of Swedes Flat Road, about 1/8 mile east of Rocky Honcut Creek, about 2 1/2 miles east of the Bangor Oroville Highway, northeast of Bangor. 304 Comment
  CAS-BOT-BC106096  Calycadenia oppositifolia A. A. Heller 1914-5-22 11426 Butte About 5 miles north of Chico on the Richardson Springs Road Comment
  CAS-BOT-BC106121  Calycadenia oppositifolia Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise, in an open area about 1/4 mi N of Kunckle Res. 500 Comment
  CHSC27702  Calycadenia oppositifolia Robert A. Schlising 1978-6-11 3289 Butte Cohasset Road, near Cohasset and 5.5 mi above (NE of ) crossing of Mud Creek. Comment
  SBBG128090  Calycadenia oppositifolia J. Dittes, L. Ahart, S. Green, J. Guardino 2003-5-27 2003 -32 Butte Cascade Range foothills, upper Bidwell Park, ca. 6.7 air-mi NE of Chico, 2.5 air-mi NE of Horseshoe Lake, on cut rd bank and slope on N side of main rd, just W of Parking Lot-R 228 Comment
  UC935692  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 mi n of, on Richardson Springs Rd. Chico Comment
  SEINET13978227 Image available Calycadenia oppositifolia G. D. Carr 1975-1 789 Butte NE of Chico, ca. 0.3 mi SW of N boundary of Upper Bidwell Park (Devil's Kitchen), ca. 5.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave, 100 yds NW road. 244 Comment
  CHSC102725  Calycadenia truncata Lowell Ahart 2009-6-30 15954 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
  CHSC27559  Calycadenia truncata Robert A. Schlising 1977-10-9 3207 Butte NE of Chico on Cohasset Road, 3.0 mi NE of jct road to Richardson Springs and 3.3 mi NE crossing of Mud Creek. Comment
  SEINET10904844  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-10-13 Taylor 2276 Butte T23N R4E sec 29. Along Jordan Hill Road (Ponderosa Way on some maps), ca. 11.5 mi N of its jct with Concow Road, 2.3 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 732 Comment
  RSA699697  Calycadenia truncata subsp. truncata L. Ahart 2004-7-11 11222 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
  CAS-BOT-BC275388  Calycadenia truncata var. truncata Clarence R. Quick 1964-7-9 64 -62 Butte N of Jarbo Gap Comment
  POM68555  Calycanthus occidentalis C. C. Bruce 1897-06 1822 `` Butte Big Chico Comment
  UC1136670  Calyptridium monospermum P. L. Johannsen 1936-7-21 954 Butte 1/2 mi e of Chaparral House (Lassen National Forest); Lassen National Forest 1584 Comment
  UC203617  Calyptridium monospermum A. A. Heller 1914-6-24 11512 Butte w side of Sierra Nevada at West Branch; Sierra Nevada 1036 Comment
  CHSC33260  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3687 Butte Along Hwy 32, 3.2 miles S of Butte/Tehama County line. Comment
  HSC103793  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road, ~ 0.5 km. SW of Anderson Mill site, and ~5.9 air km. NNE of Cohasset. 1128 Comment
  HSC103797  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8696 Butte Northern High Sierra Nevada. Along a major dirt road, 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  UC1586576  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald and Lowell Ahart 1991-6-5 4654 Butte ca 0.5 miles west of Highway 32 on logging road 200-G ca 1 mile north of Platte Mtn Lookout between Forest Ranch and Lomo. Comment
  CHSC46360  Calystegia occidentalis Lowell Ahart 1989-5-28 6300 Butte On a steep slope south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC31023  Calystegia occidentalis subsp. occidentalis M. S. Taylor 1979-6-12 2299 Butte Off dirt rd in dry areas, between Magalia serpentine area and Feather River, ca 1/2 mi. downhill from jcty of Coutelenc Rd and the Skyway. 670 Comment
  SEINET10869723  Calystegia polymorpha Mary Susan Taylor 1978-7-19 Taylor 1728 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC27224  Camellia japonica P. Moyer 1971-2-1 71 Butte CSUC Campus. Within stand of camellias, n bank Chico Ck., n of Cafe Annex bridge. 60 Comment
  CHSC44515  Camissonia contorta Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10939007  Campanula prenanthoides Taylor 1980-9-12 Taylor 3336 Butte West side of Highway 32, about 3 miles north of Forest Ranch, near Forest Ranch Fire Control Station, about a 5 milute walk west of the Highway on a dirt road. T23N R3E NW 1/4 Sec 21 Paradise Quad. 975 Comment
  CHSC103664  Capsella bursa-pastoris Lowell Ahart 2010-3-5 16570 Butte Parking area, 20 feet south of Sycamore Street (Gridley Colusa Highway), 3 feet east of Virginia Street, in Gridley. 28 Comment
  CHSC42102  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC490  Capsella bursa-pastoris P. Delaplane 1965-3-20 38 Butte At base of steps of 1069 East Ave., Chico. 30 Comment
  CAS-BOT-BC37878  Cardamine oligosperma A. A. Heller 1914-4-14 11290 Butte Hills 8 miles north of Oroville. In a grain field 8 miles north of Oroville. Comment
  CHSC87446  Cardamine oligosperma R. D. Fischer; Jenny Marr 2004-4-2 80 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Guardian Trail, south of Pine Trail junction. 399 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
  CAS-BOT-BC38056  Cardamine pachystigma LeRoy Ellsworth Detling 1935-4-18 1634 Butte West Fork Feather River, 15 miles north of Oroville. Comment
  CHSC83933  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7742 Butte Northern High Sierra Nevada. Low in the 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
  CHSC101492  Cardamine pachystigma var. dissectifolia Samantha Mackey Hillaire 2007-4-17 1250 Butte DeSabla Powerhouse Road, Butte Creek Canyon, approximately 1 mile SW of DeSabla Reservoir. UTM 10 618377E, 4414780N. 463 Comment
  CHSC60579  Cardamine pachystigma var. dissectifolia Vernon H. Oswald; Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. Near the creek. 701 Comment
  CHSC31617  Carduus pycnocephalus L. Ahart 1975-6-5 785 Butte North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC106600  Carex L. P. Janeway 2011-4-13 10229 Butte Sacramento Valley. Oroville; Centennial Plaza on top of the levee on the south side of Feather River between the north ends of Lincoln Street and Oak Street. 57 Comment
  CHSC113410  Carex abrupta Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC38068  Carex amplifolia R. E. Preston 1982-6-23 313 Butte On the bank of Fall Creek, SW of Rag Dump. 1158 Comment
  CHSC53710  Carex angustata L. P. Janeway 1987-6-26 2319 Butte Southwest end of Logue Meadows. 1325 Comment
  CHSC84747  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1091 Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  SEINET7549691 Image available Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CHSC52843  Carex athrostachya L. P. Janeway; C. A. Janeway 1986-8-31 1810 Butte Along north shore of Philbrook Reservoir at main PG and E campground. 1691 Comment
  POM218976  Carex athrostachya E. B. Copeland 1928-7-28 s.n. Butte Jonesville. 1700 Comment
  SEINET10585131  Carex athrostachya Lawrence P. Janeway 1986-1-1 Janeway 1821 Butte T25N, R4E, Jonesville quad (15') NE1/4 of sec. 13. N side of Philbrook Reservoir at main PG&E camp-ground. White fir dominated mixed conifer forest. Along edge of campground road. Comment
  SEINET7550706 Image available Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the "Lily Pond". 1700 Comment
  CHSC102951  Carex brainerdii 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
  CHSC41246  Carex brainerdii J. D. Jokerst 1985-5-20 2512 Butte Ca. 1 mile north of Stirling City, along edge of dirt road several hundred meters NW of Breedlove Reservoir. 1127 Comment
  CHSC45063  Carex brainerdii Vernon Oswald 1987-6-9 2976 Butte Forest Service Rd. to Snow Mt. which joins Humbug Rd. in the sw quarter of section 21, at a point slightly south of the spur to Summit Lake. 1950 Comment
  CHSC48546  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mi E of a spur road from the Concow Rd, which is 1.0 mi SW of Jones Meadow. 1798 Comment
  CHSC52847  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3145 Butte SW-facing slope above Coon Hollow; along dirt road 0.8 mi NE of the creek. 1783 Comment
  CHSC44118  Carex capitata L. P. Janeway 1988-7-29 3111 Butte Mdw on S side of Butte Cr 1/2 mi W of Cherry Hill. 1402 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
  CHSC42370  Carex densa Lowell Ahart 1987-5-10 5610 Butte On the banks of Wyandotte Creek, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC47064  Carex densa L. P. Janeway; Vern H. Oswald 1989-4-17 3219 Butte Along levee on E side of Butte Cr, 1.8 mi S of Biggs-Princton Rd (Afton Rd). On E side of the levee along edge of fallow rice field. 18 Comment
  CHSC96835  Carex densa Lowell Ahart 2007-4-30 13703 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  SEINET14378485 Image available Carex densa Lowell Ahart 2009-6-3 15826 Butte About 130 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  UC827031  Carex deweyana subsp. leptopoda Lewis S. Rose 1937-6-10 37364 Butte Hurleton 579 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
  RSA0045625  Carex divulsa subsp. divulsa Lowell A. Ahart 2012-4-30 17948 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 64 Comment
  CAS-BOT-BC19848  Carex echinata H. F. Copeland 1932-7-17 s.n. Butte Jonesville. Comment
  SEINET8027623 Image available Carex echinata L. Janeway, Gog, L 2008-1 3196 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi W of Cherry Creek Campground. Comment
  CAS-BOT-BC19997  Carex feta A. A. Heller 1928-6-16 14620 a Butte Butte Meadows. Comment
  CAS-BOT-BC20001  Carex feta J. D. Jokerst 1984-5-19 2025 Butte At the edge of Highway 70. Comment
  CHSC44995  Carex feta S. C. Morey 1983-7-23 579 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  UC1748323  Carex feta L. P. Janeway 1995-7-16 4860 Butte along Concow Road 8.2 mi E of West Branch Feather River Breakneck Canyon, E side (0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; 1.5 mi N of Kimshew Creek) 1402 Comment
  SEINET12649387 Image available Carex flacca L. P. Janeway 2009-1 9795 Butte 59 Comment
  CHSC106516  Carex fracta Peter F. Zika 2009-8-18 24616 Butte Cascade Range Highlands (CaRH). 2 air km S of Humboldt Summit, above Humboldt Road. 1900 Comment
  CHSC37065  Carex fracta L. Ahart 1982-9-29 3837 Butte On banks of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC43903  Carex fracta L. P. Janeway 1987-5-20 2085 Butte North Fork Feather River. Seep along hwy 70 0.3 mi north of Arch Rock Tunnel. 472 Comment
  CHSC47061  Carex fracta L. P. Janeway 1989-5-17 3247 Butte Cyn overlook (S Fk Feather River) along rd to Forbestown Diversion Dam 3.7 mi from Forbestown Rd. 693 Comment
  JEPS110318  Carex fracta Lowell Ahart 2006-7-25 13068 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC201825  Carex fracta H. M. Hall 1914-7-25 9786 Butte Jonesville Sierra Nevada Mountains 1554 Comment
  RSA726774  Carex gracilior L. Ahart 2007-4-16 13675 Butte Peter Ahart Ranch about 1 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 52 Comment
  SEINET10855729  Carex gracilior Lowell Ahart 1982-5-28 Ahart 3441 Butte On dry rocky soil and under oak trees near North Honcut Creek, n of Peter Ahart Ranch, 3 mi ne of Honcut. Foothill Woodland. 50 Comment
  JEPS122077  Carex hirtissima Lowell Ahart 2014-7-13 19642 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  HSC96351  Carex jonesii L. P. Janeway 2003-7-13 7900 Butte SE side of Humbug Summit Rd., at the Cornelia Lott Sank Memorial Spring 1519 Comment
  CAS-BOT-BC31120  Carex lemmonii V. Oswald; Lowell Ahart 1988-6-17 3403 Butte Pinkard Creek ca. 1.5 mi N of Lost Creek Reservoir. 1066 Comment
  CHSC42821  Carex lemmonii L. P. Janeway 1987-6-19 2244 Butte Along Barton Hill Rd towards Sly Cr Reservoir, 1.7 mi from the Challenge-LaPorte Rd and Travis Saddle. 1066 Comment
  CHSC61510  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte Small meadow, on the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC77170  Carex lemmonii G. F. Hrusa; T. D. Wilfred 1997-7-3 13964 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']. 790 Comment
  UCD140476  Carex lemmonii L. P. Janeway 1987-5-28 2109 Butte along side road (23N12Y) of Four Trees Road, 1.6 miles west of its junction with OroQuincy hwy. 1463 Comment
  SEINET7899355 Image available Carex lemmonii H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  CHSC105540  Carex luzulina Lowell Ahart 2010-9-28 17263 Butte On damp black soil, on a moss covered high bank, 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
  CHSC105834  Carex mariposana Lowell Ahart 2010-7-27 16928 Butte High bank on the west side of the South Fork of the Feather River, east of Forest Road 22N68, about 1/4 mile southwest of the Feather Fork Mine, about 1-1/2 miles (air) northeast of Little Grass Valley Reservoir 1565 Comment
  CAS-BOT-BC32163  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte Near Stirling 1036 Comment
  CHSC103223  Carex multicaulis L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9979 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  CHSC36893  Carex multicaulis L. Ahart 1982-6-4 3537 Butte On a lava cap, 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC42384  Carex nudata Lowell Ahart 1987-5-6 5543 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC49387  Carex pachystachya L. P. Janeway 1987-7-4 2413 Butte Along West Branch Feather River at bridge 1.8 mi from Inskip. 1341 Comment
  RSA774138  Carex raynoldsii L. Ahart 2010-9-28 17264 Butte South edge of 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  SEINET12649898 Image available Carex subbracteata L. P. Janeway 2011-1 10229 Butte 57 Comment
  CHSC52875  Carex subfusca L. P. Janeway; Patty Costello 1987-9-5 2577 Butte NW side of Big Chico Cr below the road to Soda Springs campground, near Hwy 32. 1127 Comment
  CHSC52882  Carex subfusca L. P. Janeway 1987-6-19 2229 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  SEINET4287828  Carex subfusca L. Janeway, Gog, L 2008-1 3192 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  SEINET10946213  Carex subfusca Mary Susan Taylor 1978-7-21 Taylor 1812 Butte On S side of Oroville-Quincy Hwy, ca. 14 mi N of Lake Madrone, ca 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  UCD141168  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-22 3075 Butte just above the High Lakes Road 3.4 miles west of the pass. 1905 Comment
  JEPS120093  Carex texensis Lowell Ahart 2012-6-14 18182 Butte At the entrance to Lower Bidwell Park, east of Woodland Avenue, Chico. Comment
  CHSC45067  Carex vesicaria Vernon Oswald 1987-6-23 3020 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC116953  Carpenteria californica Matthew Forster 2013-4-17 Butte City of Chico, corner of E. 3rd Ave. and Oleander Ave. 60 Comment
  CAS-BOT-BC248998  Castilleja Mrs. H. C. Cantelow 1941-5-25 s.n. Butte 2 miles west of Arch Rock, Feather River Canyon, on State highway 24 Comment
  CHSC115357  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19958 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 450 yards north of where the trail comes out to the old road and Highway 32, about 6 miles (air) northeast of Chico. 377 Comment
  CAS-BOT-BC249584  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  CHSC109577  Castilleja applegatei subsp. pinetorum L. P. Janeway 2012-6-23 10887 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  RSA769603  Castilleja applegatei subsp. pinetorum L. Ahart 2009-4-22 15594 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
  UC492739  Castilleja arachnoidea H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville Comment
  CHSC55418  Castilleja attenuata L. P. Janway 1991-4-30 3920 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of middle Fork Feather River. 426 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
  CHSC1830  Castilleja exserta P. Delaplane 1965-4-6 26 Butte Along side of Cohasset Rd. 3/4 mi. above Richardson Springs Rd. turnoff. 182 Comment
  CHSC83908  Castilleja exserta subsp. exserta Lowell Ahart 2003-4-10 10086 Butte On the west side of a wash, near the south rim of South Table Mountain, about 2 miles (air) north of Oroville. 302 Comment
  JEPS93845  Castilleja exserta subsp. exserta Lowell Ahart 1998-6-9 7996 Butte about 7 air mi n of Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 396 Comment
  UCR188712  Castilleja lacera Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CDA41400  Castilleja miniata T. C. Fuller 1962-7-12 9175 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  JEPS31898  Castilleja tenuis A. A. Heller 1914-6-22 11509 Butte Chico Meadow 1219 Comment
  CHSC54336  Caulanthus lasiophyllus Lowell Ahart 1991-5-8 6650 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC40501  Caulanthus lasiophyllus Lowell Ahart 1983-5-7 3966 Butte Peter Ahart Ranch, about 1.5 miles north and 2 and 1/8 miles east of Honcut. 50 Comment
  CHSC50338  Ceanothus diversifolius Vernon Oswald 1990-5-14 4211 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  SBBG121216  Ceanothus diversifolius L. Ahart 2007-7-10 14283 Butte N side of USFS Rd 21N31Y, ca. 0.6 mi W of Bald Rock Rd, ca 17 mi NE of Oroville 1032 Comment
  RSA718378  Ceanothus integerrimus L. Ahart 2006-6-24 12860 Butte Dirt road (Ponderosa Way), at an intersection, a gated road goes NW on Cohasset Ridge, 3 3/4 miles (air) NE of Cohasset. 1128 Comment
  SEINET12210559  Ceanothus integerrimus Unknown 1970-1 118 Butte ca 20 mi N of Oroville, on left side of Hwy. 70 Comment
  CHSC27336  Ceanothus prostratus T. B. Devine 1977-6-5 412 Butte Ca 1 mi n of De Sabla. 853 Comment
  SEINET10493652  Ceanothus prostratus Mary Susan Taylor 1981-4-16 Taylor 3542 Butte T21N R6E nw sec 18, Brush Creek quad. Galen Ridge, ca. 1 mi SE of Brush Creek. Yellow Pine Forest; 3400 ft. 1036 Comment
  CHSC111741  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wess Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  JEPS120067  Celtis australis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17997 Butte On the south side Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  JEPS120082  Celtis australis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17910 Butte On the north side of the path, near the table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  UC179660  Centaurea benedicta A. A. Heller 1914-4-24 11416 Butte hills 8 mi n Oroville Comment
  CDA34188  Centaurea maculosa Ed Finley 2010-6-2 PDR# 1303791 Butte Paradise; Horning Ranch, Edgewood Lane. 0 Comment
  CHSC101821  Centaurea melitensis Lowell Ahart 2009-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS98719  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  NY43565  Centaurea solstitialis S. Bianco 1995-11-9 1052 Butte 13199 Concow Rd, NE edge of Concow Lake (Private land holding) 670 Comment
  RSA754863  Centaurea solstitialis L. Ahart 2009-7-3 15984 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC115798  Centaurea stoebe subsp. micranthos Lowell Ahart 2015-9-8 20533 Butte On the sides of a dirt road, about one mile northeast of the bridge across Fall River, about 8 miles (air) northeast of the school in Feather Falls. 1191 Comment
  JEPS88573  Centaurium muehlenbergii Vernon H. Oswald and Lowell Ahart 1996-6-10 7758 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit; US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, NE corner of Tract 7.2, Sanctuary 1 33 Comment
  CHSC62110  Centaurium tenuiflorum L. P. Janeway 1993-7-2 4424 A Butte Plumas National Forest. Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swaybe Hill to Big Bar Mtn). 926 Comment
  JEPS93821  Centaurium venustum Lowell Ahart 1998-7-1 8021 Butte about 7 air mi n of Oroville (nw of the Ione oak tree, about 1/8 mi nw of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  UC1609087  Centunculus minimus Lowell Ahart 1993-5-17 6953 Butte 1 1/2 mi. n. & 3 mi. e. Honcut (ca. 12 mi. s.e. of Oroville, on w. side of Dunstone Rd.) 60 Comment
  SD149106  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Edge of the North Fork of the Feather River, near the Poe Power House, ca. 2 mi. SE of Jarbo Gap 890 Comment
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Jan 9 2013
  CHSC115479  Cerastium glomeratum L. P. Janeway; Emily Meigs Doe 2015-4-22 11667 Butte Northern High Sierra Nevada. Plumas National Forest; southwest side of Old Forbestown Road, 0.8 road-km north of Forbestown Road and New York Flat Road. 855 Comment
  CHSC82430  Cerastium glomeratum Lowell Ahart 2002-5-7 9619 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  OBI69157  Cercis occidentalis Kari Fisher, Bill Fisher 2000-10-8 27 Butte Upper Bidwell Park, along Upper Bidwell Park rd 98 Comment
  UC136899  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  SEINET10543165  Cercocarpus betuloides Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7023 Butte 2.6 miles w of paradise on chico road 610 Comment
  CHSC45963  Cercocarpus betuloides var. betuloides Lowell Ahart 1979-4-6 1821 Butte Along the west side of North Honcut Creek, about 1/2 mile north of Avocado Avenue, about 3 miles north-west of Bangor. 91 Comment
  CHSC34126  Chamaesyce maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi w of Chico. 40 Comment
  JEPS115356  Chamaesyce maculata Lowell 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 67 Comment
  UC177570  Chamaesyce maculata H. M. Hall 1914-8-2 9835 Butte near Marysville 22 Comment
  CDA13844  Chamaesyce nutans G. F. Hrusa, T. D. Wilfred 1996-9-6 13572 Butte Butte Basin; E side of Butte Creek approx. 1/2 mi. NE of confluence with Howard Slough, and immed. below McPherrin Dam (private and scheduled for removal). Comment
  CHSC23374  Chamaesyce ocellata Robert Schlising 1974-10-30 3160 Butte Chico; Bidwell Park aarea above golf course and rifle range. Comment
  JEPS115651  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2009-8-13 16271 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET10529948  Cheilanthes californica Mary Susan Taylor 1980-3-19 Taylor 2393 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CAS-BOT-BC69443  Cheilanthes gracillima Lowell Ahart 1987-5-22 5677 Butte N. of Lumpkin Ridge Road, about 1.5 mi. e. of Camp 18, about 8 mi. ne. of Feather Falls. 1280 Comment
  CHSC34775  Chenopodium strictum var. glaucophyllum L. Ahart 1981-11-6 3230 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. 35 Comment
  CHSC69681  Chenopodium strictum var. glaucophyllum Vernon Oswald 1987-7-30 3171 Butte Ranch Arroyo Chico. On the edge of the Sacramento River just upstream from the washout (Chico Landing site). 36 Comment
  UC474264  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte woods near Jones Creek (Jonesville); Jonesville Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  JEPS103563  Chondrilla juncea Lowell Ahart 2002-7-18 9875 Butte On the W edge of Lumpkin Road, ca 1/8 mile S of the Enterprise Bridge across Lake Oroville, ca 11 1/2 miles (air) NE of Oroville. 326 Comment
  CAS-BOT-BC252672  Chorizanthe membranacea Lowell Ahart 1980-7-20 2469 Butte Near the Suspension Bridge, Oroville 330 Comment
  CHSC39074  Chorizanthe polygonoides var. polygonoides R. A. Schlising 1980-4-6 3545 Butte E of Chico along Skyway, 3.5 mi S of Paradise. 213 Comment
  POM105880  Chorizanthe stellulata R. M. Austin 1879-05 s.n. Butte Dead Man's Grade Comment
  CHSC38336  Cichorium intybus Vernon Oswald 1983-6-2 603 Butte Upper Bidwell Park, Chico, at the E end of Upper Park Rd. 207 Comment
  JEPS87145  Cinna latifolia Lowell Ahart 1992-7-26 6836 Butte small stream about 1/2 mi n Carr Mine (s side of Coon Hollow, about 2 (air) mi s of Snow Mountain); s side Coon Hollow 1737 Comment
  CHSC20896  Circaea alpina subsp. pacifica M. S. Taylor 1975-8-31 880 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  SEINET10453140  Circaea alpina subsp. pacifica Lowell Ahart 1983-8-16 Ahart 4293 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  UC177565  Cirsium andersonii H. M. Hall 1914-6-30 9817 Butte northern Butte County Sierra Nevada Mountains 1615 Comment
  CAS-BOT-BC284378  Cirsium arvense J. R. Keck; E. H. Remmers 1974-9-4 s.n. Butte 0.2 mile north of Pinkard Creek inlet to Lost Creek Reservoir, N.E. of Clipper Mills Comment
  SEINET179234  Cirsium breweri E. B. Copeland 1930-7-28 488 Butte Jonesville 1600 Comment
  CHSC37409  Cirsium douglasii var. breweri R. A. Schlising; S. Morey 1982-8-28 4376 Butte N part of county, n of Cherry Hill Meadow, n and e of Butte Meadows and n of Butte Creek. Near creek. 1524 Comment
  SFV11411  Cirsium occidentale var. californicum M. L. Vincent 1963-6-11 425 Butte Roadside on Pentz Road. 5 miles south of Paradise. Comment
  CAS-BOT-BC288040  Cirsium occidentale var. venustum John Thomas Howell 1962-6-15 37430 Butte 4 miles from Paradise on road to Oroville 106 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-BC228749  Cistanthe umbellata A. A. Heller 1917-7-29 12858 Butte Summit above Jonesville 2133 Comment
  CAS-BOT-BC228759  Cistanthe umbellata Dr. Barton W. Evermann 1917-7-1 s.n. Butte Between Oroville & Chico Comment
  CAS-BOT-BC163542  Clarkia arcuata G. P. Van Eseltine 1918-5-5 1724 Butte Near Nimshew Comment
  CHSC1091  Clarkia arcuata E. Hembree 1929-4-21 Butte Centerville Rd. 121 Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  POM37901  Clarkia arcuata C. C. Bruce 1898-03 1956 Butte Foothills [no specific locality given] Comment
  UCD103993  Clarkia arcuata Katherine Lahey 1981-4-16 33 Butte Table Mountain. 0.6 mile E of Cherokee Road and Table Mountain Blvd. junction, on Cherokee Road. 365 Comment
  CAS-BOT-BC164134  Clarkia concinna Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC3329  Clarkia concinna subsp. concinna Robert L. Smith 1966-5-17 4 Butte Honey Run Rd., 3 miles W of Paradise. 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
  LA206022  Clarkia gracilis subsp. albicaulis H. Lewis; M. Lewis, M. R. Roberts 1951-5-19 827 Butte road from Nimshew to Butte Creek Canyon, 1.65 mi. below Nimshew Comment
  UC107825  Clarkia gracilis subsp. albicaulis R. M. Austin July 1896 848 Butte Little Chico Creek Comment
  CAS-BOT-BC171884  Clarkia gracilis subsp. gracilis Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS100683  Clarkia mildrediae Dean W. Taylor 1995-8-6 15377 Butte 2 air mi NE of Stirling City; Plumas National Forest 1127 Comment
  CHSC48630  Clarkia mildrediae subsp. mildrediae Vernon Oswald 1985-6-20 1846 Butte Hwy 32 0.2 mi s of Headwaters Rd. between Forest Ranch and Platte Mtn. Lookout. Near the road. 944 Comment
  CAS-BOT-BC163356  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 853 Comment
  UC1730253  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte Swayne Hill, S end, along Road 23N28 0.8 mi W of Road 22N34 731 Comment
  UCD169420  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. 655 Comment
  UC725303  Clarkia purpurea A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  UCD80466  Clarkia purpurea subsp. quadrivulnera CNPS SN Foothill Team 2005-5-5 SNFN 0157 c Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  CAS-BOT-BC164779  Clarkia rhomboidea John Thomas Howell 1967-6-22 42645 Butte 3 miles northeast of Pulga Bridge, canyon of the Feather River North Fork Comment
  CAS-BOT-BC164794  Clarkia rhomboidea L. P. Janeway 1991-6-1 3983 Butte West-facing cut-bank of Dark Canyon Road 2.4 mi south of Big Bend Road/Parkhill 396 Comment
  CHSC36811  Clarkia rhomboidea L. Ahart 1982-6-15 3581 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  RSA108407  Clarkia rhomboidea Harlan Lewis, M. Lewis 1947-6-11 398 Butte On Magalia to Stirling City Road, 1.4 mile from Magalia School Comment
  UC1609083  Clarkia rhomboidea Lowell Ahart 1993-6-20 6980 Butte about 6 1/2 mi (air) ne Feather Falls (about 1 1/2 mi e Camp 18); Lumpkin Ridge 1219 Comment
  CAS-BOT-BC164800  Clarkia rhomboidea L. P. Janeway 1987-5-7 2029 Butte Along Dark Canyon Road 1.0 mi south of Big Band Road/Parkhill 512 Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CHSC56064  Claytonia palustris L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3148 Butte Along West Branch Feather River, 1.5 mi along Humbug Summit Road north of Philbrook Road. 1584 Comment
  RSA65644  Claytonia palustris F. W. Peirson 1926-6-21 6774 Butte Butte Meadow, Humboldt Road Comment
  SFV14448  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville. South bank of Jones Creek. 0.4 km east of the Jonesville Hotel. 1550 Comment
  RSA718341  Claytonia perfoliata L. Ahart 2006-5-8 12596 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  JEPS108794  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-5-8 12596 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  SEINET10572736  Claytonia rubra Mary Susan Taylor 1981-3-31 Taylor 3449 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  SEINET10572739  Claytonia rubra Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4743 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CHSC32676  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-24 3432 Butte S side of Hwy 70 near creek entrance opposite Cresta Poserhouse. 487 Comment
  UCR66727  Claytonia sibirica H. F. Copeland 1931-6-9 1515 Butte Jonesville, by Jones Creek 1524 Comment
  CHSC1438  Clematis lasiantha J. Koopman 1929-4-18 Butte Honey Run canyon. 396 Comment
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  POM252812  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte On the Feather River Highway 23 miles from Oroville. Comment
  UC600649  Collinsia torreyi var. wrightii H. F. Copeland 1932-6-27 Butte woods near Butte Creek Meadows (going toward Kirbys Meadow, Jonesville); Jonesville Comment
  CHSC34597  Collomia heterophylla R. A. Schlising; P. Broyles 1979-5-15 3405 Butte NW of Concow Reservoir at Griffin Gulch. Roadside. 640 Comment
  CHSC34994  Collomia heterophylla R. Schlising; D. Ikeda, R. Banchero 1980-6-23 3772 Butte 2.2 mi N of La Porte Road (= 1.2 mi S of S end of Sly Creek Reservoir dam), at Strawberry Valley Creek. Roadside. 1059 Comment
  JEPS115538  Collomia tinctoria Lowell Ahart 2009-5-15 15716 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CAS-BOT-BC180252  Comandra umbellata subsp. californica A. A. Heller 1915-4-20 11845 Butte 3 miles above Centerville in the Sierra foothills Comment
  CHSC102848  Convolvulus arvensis Lowell Ahart 2009-5-30 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. 269 Comment
  RSA0036118  Corallorhiza maculata Marion Ownbey, Ruth P. Ownbey 1938-6-14 1732 Butte Humboldt Summit above Jonesville. 2026 Comment
  CHSC89482  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 213 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  CAS-BOT-BC211987  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte West Branch, west side of the Sierra Nevada 1036 Comment
  UCD117253  Cornus nuttallii Sue Wagener 1955-5-28 78 Butte Powelton, on Diamond Match Road ca. 5 miles north of Lovelock, Stirling City area. 1127 Comment
  SEINET10453479  Cornus nuttallii Mary Susan Taylor 1981-4-14 Taylor 3531 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  UC1122804  Cornus sessilis R. Bacigalupi 1934-9-2 2325 Butte 10 mi. s.w. Butte Meadows (along Chico-Butte Meadows Rd., canyon of W. Fork Campbell Creek); Lassen Nat'l Forest, Chico Quad., W. Fork Campbell Creek Comment
  CDA24604  Corydalis caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mile east of Jonesville. 0 Comment
  SEINET10838865  Corylus cornuta var. californica Mary Susan Taylor 1980-5-8 Taylor 2609 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
  SEINET10483826  Cotoneaster pannosus Lowell Ahart 1991-6-19 Ahart 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East, southwest of Oroville Dam. Foothill Woodland. T19N R4E c/s/S2. 213 Comment
  CHSC90637  Cotula australis Lowell Ahart 2005-4-2 11680 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  SBBG119746  Cotula australis L. Ahart 2004-3-12 10703 Butte Thompson Flat Cemetery, grave of Tillie Moody, E of the entrance gate, ca. 1/8 mi E of Cherokee Rd, ca. 1 mi N of Oroville 61 Comment
  CHSC118577  Cotula coronopifolia Lowell Ahart 2017-4-22 21390 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC112911  Crassula aquatica B. Castro; Robin Carter 2011-4-29 1870 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC82214  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water 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
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC46741  Crassula saginoides Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD72993  Crassula tillaea Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC100498  Crataegus monogyna Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15408 Butte On the north side of the gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. 67 Comment
  SEINET10483806  Crataegus oxyacantha Mary Susan Taylor 1975-5-24 Taylor 769 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CHSC33522  Crepis pleurocarpa R. A. Schlising; R. Banchero, K. Tarp 1981-7-11 4139 Butte E of N Fork of Feather River. Along Coyote Gap road, ca 0.5 mi S of Coyote Gap. 1219 Comment
  CHSC44891  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  SD8855  Crocidium multicaule R. M. Austin 1883-1 Butte Comment
  CHSC107899  Crucianella angustifolia L. P. Janeway 2011-6-29 10414 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC118498  Crucianella angustifolia L. P. Janeway 2016-5-9 11953 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 junction of Ponderosa Way and Road 19N19. 701 Comment
  JEPS104099  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  JEPS122259  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 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
  JEPS115035  Crypsis schoenoides Lowell Ahart 2007-10-31 14514 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  JEPS95949  Crypsis schoenoides Lowell Ahart 1999-8-13 8148 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET11688336  Crypsis schoenoides Unknown 1984-1 4788 Butte W of Pacific Heights Road, about 5 mi SW of Oroville 40 Comment
  SEINET10518393  Crypsis vaginiflora A. Arthur Heller 1914-7-31 Heller 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  CAS-BOT-BC189239  Cryptantha John Thomas Howell 1967-6-22 42615 Butte Magalia 701 Comment
  POM183197  Cryptantha affinis H. F. Copeland 1930-7-28 1386 Butte Neighborhood of Jonesville. 1829 Comment
  UC398945  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville 1700 Comment
  CHSC39974  Cryptantha flaccida L. Ahart; P. Ahart 1983-6-26 4119 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. 500 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CAS-BOT-BC85568  Cupressus macnabiana Lowell Ahart 1985-6-30 5094 Butte South of road to Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 899 Comment
  SEINET10966022  Cupressus macnabiana Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5395 Butte T23N R4E sw/sw sec 30, Paradise quad. On serpentine outcrop, at jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise. 1220 ft elev. 372 Comment
  CHSC50547  Cuscuta californica var. californica Vernon Oswald; Lowell Ahart 1990-7-5 4348 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  JEPS120643  Cuscuta campestris Lowell Ahart 2013-11-13 19270 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, along the sides of Sucker Creek, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. Comment
  JEPS102501  Cuscuta indecora Vernon H. Oswald 2000-11-2 9982 Butte W of Chico (Chico Sewage Treatment Plant, Chico River Road) 41 Comment
  UC1586409  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte about 4 air mi ne Brush Creek (e of Oroville-Quincy Hwy, on the n side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd)) 1097 Comment
  SEINET10497510  Cynoglossum grande Mary Susan Taylor 1980-5-8 Taylor 2617 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
  JEPS103526  Cynosurus echinatus Lowell Ahart 2002-6-21 9737 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  SEINET10507676  Cynosurus echinatus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4035 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-BC114704  Cyperus bipartitus Lowell Ahart 1987-9-4 5877 Butte On the bottom of North Honcut Creek, ca. 2 mi N & 3 mi E of Honcut, 67 Comment
  JEPS87444  Cyperus bipartitus Lowell Ahart 1993-7-23 7104 Butte ca. 6 (air) mi. n.e. of Feather Falls (w. side of Fall R., 100 yds. w. of bridge across Fall river); w side Fall River 1036 Comment
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  CHSC28616  Cyperus eragrostis M. S. Taylor 1979-10-3 2223 Butte In Butte Creek Canyon, ca 1/4 mi upstream from bridge corssing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CHSC45752  Cyperus eragrostis L. P. Janeway 1987-6-13 2190 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  SEINET191614  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 miles E of Honcut. 137 Comment
  RSA92299  Cyperus eragrostis F. W. Peirson 1926-6-20 6763 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  UCD141068  Cyperus eragrostis L. P. Janeway 1987-5-20 2087 Butte seep along Highway 70, 0.3 mile north of Arch Rock Tunnel. N fork Feather River. Granitics. 472 Comment
  CAS-BOT-BC114376  Cyperus erythrorhizos Lloyd 1940-6-21 7 Butte Grey Lodge Refuge, 9 mi N of Gridley Comment
  SEINET10467311  Cyperus erythrorhizos Mary Susan Taylor 1975-10-3 Taylor 940 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
  JEPS95785  Cyperus flavescens Lowell Ahart 1999-8-13 8143 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC109779  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC65183  Cyperus niger Lowell Ahart 1995-8-19 7613 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, 12 miles south-east of Oroville. 36 Comment
  CHSC78488  Cyperus niger Lowell Ahart 2000-8-23 8662 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
  CAS-BOT-BC113848  Cyperus niger var. capitatus Lowell Ahart 1980-7-29 2479 Butte Near Hurleton Swedes Flat Road. 600 Comment
  CAS-BOT-BC114206  Cyperus strigosus Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut. 45 Comment
  SEINET8773192 Image available Cyperus strigosus H. E. Brown Butte Near Clear Creek Comment
  CAS-BOT-BC68050  Cystopteris fragilis Lowell Ahart; Vernon Oswald 1987-8-5 3184 Butte Outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail 2072 Comment
  CHSC110473  Cystopteris fragilis L. P. Janeway 2013-5-21 11115 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon 1.1 air km north of Poe Dam, along Camp Creek Road at crossing of Dogwood Creek. 585 Comment
  UCSB63846  Cystopteris fragilis Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC42902  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CAS-BOT-BC189854  Danthonia californica Lowell Ahart 1987-7-8 5812 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC87576  Darmera peltata R. D. Fischer 2004-5-2 127 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on margins of Big Chico Creek near bottom of 10 Mile House Road. 192 Comment
  SEINET10483090  Darmera peltata Mary Susan Taylor 1980-3-19 Taylor 2387 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC76404  Datura wrightii Lowell Ahart; Vernon H. Oswald 1999-10-3 8294 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC29798  Daucus pusillus M. S. Taylor; J. D. Jokerst 1980-5-14 2882 Butte On w side of Oroville-Quincy Hwy ca. 1 mi (2 mi by car) n of Bidwell Bar Bridge over south fork of Feather River, ca. 7 mi s of Lake Madrone. 457 Comment
  SEINET10906787  Daucus pusillus Mary Susan Taylor 1979-6-12 Taylor 2304 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC84274  Delphinium hansenii subsp. hansenii Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10225 Butte On the east side of the dirt road, at Parking Area P, Upper Bidwell Park, about 5 miles east of Manzanita Avenue, Chico. 228 Comment
  CHSC3307  Delphinium hesperium M. Gregg 1966-4-23 102 Butte 1/2 mile on the Skyway from Burtons Mesa. This is south east of Chico. On the Butte Creek side of the Skyway. Comment
  CAS-BOT-BC10103  Delphinium hesperium subsp. pallescens H. E. Brown 1897-5-1 207 Butte near Clear Creek Comment
  CHSC97408  Delphinium nuttallianum Robert Fischer 2006-6-17 1027 Butte Butte Meadows. Cascade Range High, off Hwy. 32 on Humboldt Road between Lomo and Butte Meadows. 1402 Comment
  CHSC56771  Delphinium patens R. A. Schlising 1982-5-19 4249 Butte E of village of Feather Falls, just n of Fall River and Fall River Campground. 1066 Comment
  CHSC2463  Delphinium patens subsp. patens R. Carter 1964-3-23 58 Butte 5 mi. E of Chico Rd. on Cherokee Rd. Ca. 200 yds. E of rd. along base of cliffs. 60 Comment
  CHSC31340  Delphinium patens subsp. patens Herb Allan McLane 1980-4-23 6 Butte 1.2 mi sw of Ponderosa Dam, se of trail, Plumas National Forest. 426 Comment
  CAS-BOT-BC17020  Delphinium variegatum L. S. Rose 1931-4-13 s.n. Butte Oroville Comment
  CHSC41525  Delphinium variegatum Richard J. Slama 1981-4-20 12 Butte Ca. 5 mi. e of Chico, ca. 3 mi. e of hwy 99 and hwy 32, ca. 2 mi. e on Humboldt Road on n side. 99 Comment
  CHSC36362  Delphinium variegatum subsp. variegatum J. D. Jokerst 1982-4-12 1525 Butte South of Clark Rd. 0.4 mi N of its junction with Hwy 70. Comment
  CHSC26780  Dendromecon rigida M. S. Taylor 1978-5-6 1580 Butte Magalia. 609 Comment
  CAS-BOT-BC192650  Deschampsia danthonioides Lowell Ahart 1980-5-4 2170 Butte Thermalito 65 Comment
  CHSC44247  Deschampsia danthonioides V. Oswald; L. Ahart 1988-7-13 3577 Butte Road to High Lakes e of Philbrook Reservoir. On the n side of the road. 1859 Comment
  CHSC56628  Deschampsia danthonioides J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  SEINET10966580  Deschampsia danthonioides A. Arthur Heller 1914-5-13 Heller 11399 Butte Between Durham & Nelson. Comment
  UCD62779  Deschampsia danthonioides var. gracilis A. A. Beetle 1941-6-27 2746 Butte Near Lomo at road forking to Chico Creek. Comment
  CAS-BOT-BC201745  Deschampsia elongata E. B. Copeland 1929-7-16 335 Butte Jonesville 1500 Comment
  JEPS113493  Dianthus armeria subsp. armeria Lowell Ahart 2007-7-2 14247 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville 680 Comment
  CHSC3148  Dicentra formosa Gary Dutton 1966-4-23 225 Butte Found four miles north of Paradise on Rd. to Jones Village. Comment
  CHSC3333  Dicentra formosa Robert L. Smith 1966-4-7 32 Butte Paradise Dam, SE side. Comment
  CHSC636  Dicentra formosa R. M. Staley 1952-7-13 Butte Ponderosa Way. 609 Comment
  CHSC79753  Dicentra formosa Leanna Brown 1999-4-27 70 Butte Eastern shore of Paradise Lake. 753 Comment
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  SD8288  Dicentra formosa Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  SEINET10934920  Dichanthelium lanuginosum Mary Susan Taylor 1979-6-12 Taylor 2295 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 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-BC500063  Dichelostemma capitatum M. S. Taylor 1982-5-2 4396 Butte S side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  UC421798  Dichelostemma capitatum Francis Ramaley 1917-5-6 11206 Butte 3 of Chico Comment
  CHSC30975  Dichelostemma capitatum subsp. capitatum Diane M. Reilly 1980-4-11 6 Butte 10 ft e of creek, ca. 1/2 mi n on drt road off Big Bend Rd, ca. 5 m se of Hwy 70, ca. 27 mi n of Oroville. 719 Comment
  RSA333574  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 23 Butte Along Cherokee Road, 0.5 mile N of intersection with Oregon Gulch Road, near South Table Mountain, N of Oroville. 450 Comment
  RSA333580  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-16 31 Butte Along State Route 70, 1 mile N of intersection with Palermo Road, S of Oroville. 150 Comment
  CHSC21268  Dichelostemma multiflorum M. S. Taylor 1974-3-5 72 Butte Around entrance to Richardson Springs, ca. 4 mi n of Chico. 121 Comment
  CHSC23469  Dichelostemma multiflorum J. R. Lee 1974-4-22 3 Butte 25 yds n of Skyway and 6 mi e of Chico city limits. 152 Comment
  CHSC90608  Dichelostemma multiflorum Jose Romero 1983-4-20 19 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  UCD80430  Dichelostemma multiflorum CNPS SN Foothill Team 2006-5-25 SNNR 0958 Butte Horning Ranch, private. 189 Comment
  UCD139266  Dichelostemma volubile Don Blosser 1970-5-9 12 Butte on Skyline Blvd. near Skyline Way, 5 miles east of Oroville. Comment
  CHSC46594  Digitalis purpurea V. Oswald; L. Ahart 1989-7-12 3841 Butte Loggin road (T-line) 0.5 mi (air) wnw of Bald Mtn Lookout, ne of Stirling City. 1487 Comment
  CHSC27252  Digitaria sanguinalis P. Moyer 1971-11-7 67 Butte CSUC Campus. N bank Chico Ck., behind cafe annex. Comment
  JEPS119518  Digitaria sanguinalis Lowell Ahart 2011-10-29 17728 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  UC1037341  Digitaria sanguinalis E. Wilson 1934-9-3 71 Butte Biggs Rice Station Comment
  CAS-BOT-BC150496  Diplacus grandiflorus John Thomas Howell; Gordon H. True 1967-7-12 43386 Butte North Fork Feather River near Cresta Powerhouse 426 Comment
  CHSC44771  Diplacus grandiflorus R. Banchero 1980-6-19 258 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  CHSC44813  Diplacus grandiflorus R. Banchero 1980-4-19 123 Butte Along Lumpkin Rd ca 1.9 mi S of the Enterprise Bridge, 2.0 mi NE of its jct with Forbestown Rd. 390 Comment
  CHSC44817  Diplacus grandiflorus R. Banchero 1980-4-13 112 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC103691  Diplacus kelloggii Lowell Ahart 2010-5-7 16624 Butte On the west side of a trail, about 100 yards north of south park fence, on a ridge about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 304 Comment
  CHSC62788  Diplacus kelloggii L. P. Janeway 1993-5-20 4349 Butte Plumas National Forest. Swayne Hill. South-facing road cutbank overlooking lower French Creek. 746 Comment
  CHSC44748  Diplacus layneae R. Banchero 1980-6-14 216 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  CAS-BOT-BC154032  Diplacus torreyi A. A. Heller 1914-6-24 s.n. Butte West Branch 1036 Comment
  CHSC39545  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC35076  Dipsacus fullonum N. Prouty; J. Prouty, R. A. Schlising 1981-10-4 4218 Butte 0.7 mi S of Nelson, between highway and Southern Pacific Railroad tracks. Comment
  CDA31991  Dittrichia graveolens L. Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito. Comment
  CHSC100483  Dittrichia graveolens Lowell Ahart 2008-11-8 15445 Butte Parking area on the west side of the Midway, west of the intersection of Midway and East Park Avenue, Chico. 60 Comment
  CHSC83438  Dodecatheon alpinum L. P. Janeway 2002-5-26 7562 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  CHSC13897  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 248 Butte 0.3 mi e on Neal Road from Hwy 99 on n side of road. Comment
  CHSC3620  Dodecatheon clevelandii subsp. patulum John Francis 1966-2-21 22 Butte 1/2 mile S. of intersection on Neal Rd. and Hwy 99E on Neal Road. Plant growing in pasture. Comment
  CHSC4625  Dodecatheon clevelandii subsp. patulum R. Carter 1966-3-3 290 Butte Found 4 mi. NE of intersection of Chico Rd. and Old Cherokee Rd., 15' from W side of Cherokee Rd. 243 Comment
  CHSC67290  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1954 Butte Peter Ahart Ranch on bluff top of the North Fork Honcut Creek. Growing within 0.2-0.3 mi of #1952 and 1953. Comment
  CHSC51077  Downingia bacigalupii Pauleen Broyles 1987-7-19 1082 Butte Ca 7.2 km (air) NE of Inskip. 1750 Comment
  RSA436094  Downingia bicornuta L. Ahart 1984-5-8 4599 Butte Ca. 2.5 miles N and 1.4 miles E of Honcut, ca. 12 miles S of Oroville. 40 Comment
  CHSC81239  Downingia bicornuta var. bicornuta J. Trizzino 2001-4-25 60 Butte Oro-Chico Highway, 0.25 mi west of Neal Road. 54 Comment
  UC144216  Downingia bicornuta var. bicornuta Copeland 1903-5-30 3284 Butte Chico Comment
  UC196262  Downingia bicornuta var. bicornuta A. A. Heller 1914-4-24 11316 Butte 5 mi from Chico (Chico-Oroville road) Comment
  UC28961  Downingia bicornuta var. bicornuta Edw. L. Greene Jun 1889 Butte near Chico Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  POM285433  Downingia cuspidata Lyman Benson 1935-3-27 6357 Butte 10 mi. W. of Oroville. Watershed: Sacramento River. 91 Comment
  POM59144  Downingia ornatissima A. A. Heller, H. E. Brown 1902-5-14 5549 Butte Berry Canyon (near Clear Creek) Comment
  CHSC65899  Downingia ornatissima var. ornatissima Vernon H. Oswald 1996-4-20 7408 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. In formally irrigated pasture in the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CAS-BOT-BC41347  Draba verna Lowell Ahart 1983-4-1 3914 Butte About 4 miles south of Jarbo Gap. Along the edge of old Highway 40. 350 Comment
  UCD115560  Draba verna R. N. Bowman 1977-3-30 1352 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  CHSC39617  Draba verna var. aestivalis Lowell Ahart 1983-4-1 3914 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  UCD119185  Draperia systyla L. Ahart 1982-9-13 3820 Butte Near dirt road n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC401554  Drosera rotundifolia M. S. Taylor; L. Ahart 1981-8-16 4202 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City 1828 Comment
  CHSC46489  Drosera rotundifolia Lowell Ahart 1984-7-19 4756 Butte About 1/2 mile east of Bald Mountain, about 5 air ... Field redacted by CHSC, contact the data manager for more information 1615 Comment
  CHSC51866  Drosera rotundifolia L. P. Janeway 1987-7-5 2445 Butte 0.4 mi E on a spur rd from the Concow Rd, which is ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  JEPS120572  Drymocallis glandulosa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  UC600380  Drymocallis lactea var. austiniae E. B. Copeland 1930-7-12 Butte above Jonesville (head of Butte Creek area); , above Jonesville 1900 Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  CHSC3431  Duchesnea indica Judy Potter 1966-3-23 Butte West of Physical Science bridge Chico State College. Comment
  UC632456  Duchesnea indica Lee Richardson 1864-6-3 Butte Richardson's Springs Comment
  CHSC36509  Dysphania ambrosioides L. Ahart 1981-9-26 3206 Butte On a sand bar near the Sacramento River. 40 Comment
  CHSC112198  Dysphania botrys Lowell Ahart 2013-4-20 18561 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC97729  Dysphania pumilio Lowell Ahart 2007-11-3 14566 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC31239  Echinochloa colona M. S. Taylor; J. D. Jokerst 1979-10-11 2284 Butte In ricefield, ca. 6 mi s of Chico, on w side of Goodspeed-Watt Rd (Aquas Frias Rd). 33 Comment
  CHSC34191  Echinochloa colona L. Ahart 1981-9-19 3178 Butte Along edge of road just a few ft north of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  SEINET3928558  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico, CA, at edge of a driveway along Mangrove Ave. by intersection with E 7th Ave.; 0 95 Comment
  CHSC110387  Echinochloa crus-galli Lowell Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 64 Comment
  CHSC112604  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC23131  Echinochloa crus-galli M. S. Taylor 1975-10-3 931 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  SEINET239850 Image available Echinochloa crus-galli E. Dean, J. Ditomaso; E. Healy 2001-8-20 855 Butte Biggs UC Field Station 30 Comment
  UC1100268  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12740 Butte nw Pennington; Gray Lodge Game Refuge Comment
  SEINET10509316  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  CDA1999  Echinochloa oryzicola E. Dean, J. M. DiTomaso, Evelyn Healy 2001-8-2 854 Butte Biggs UC Field Station: north of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 miles E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. Comment
  CAS-BOT-BC208572  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 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
  JEPS122231  Elatine Lowell Ahart 2014-4-26 19411 -A Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  JEPS123909  Elatine Lowell Ahart 2015-4-24 20073 Butte About 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. Comment
  CHSC113454  Elatine ambigua Lowell Ahart 2014-8-8 19696 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC42130  Elatine californica Lowell Ahart 1984-5-8 4597 Butte About 2-1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS120900  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards N of Lower Honcut Road, about 1.75 miles W of Honcut. Comment
  CHSC65454  Elatine rubella Vernon Oswald 1988-10-25 3719 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  CAS-BOT-BC113637  Eleocharis acicularis Herbert L. Mason; Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge. Comment
  CHSC68422  Eleocharis acicularis L. P. Janeway; R. A. Schlising 1988-7-1 2921 Butte Edges of Summit Lake, on the northwest flank of Snow Mountain. 1889 Comment
  POM183193  Eleocharis acicularis var. acicularis H. F. Copeland 1930-7-28 1355 Butte Neighborhood of Jonesville. 1829 Comment
  CAS-BOT-BC113413  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2678 Butte In rice plots, Biggs Rice Experiment Station Comment
  CHSC44243  Eleocharis bella V. Oswald; L. Ahart 1988-7-13 3586 Butte Road to High Lakes e of Philbrook Reservoir. Along a streamlet in a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CAS-BOT-BC113452  Eleocharis bella Lowell Ahart 1984-7-19 4728 Butte Ca. 1 1/2 mi SE of Bald-Mountain, 3/4 mi W of Oak Point, ca. 4 mi NE of Stirling City. 1500 Comment
  CHSC78183  Eleocharis bolanderi Lowell Ahart 2000-5-30 8410 Butte Near seeps, about 1/4 mile northeast of Kunkle Reservoir, east of the Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  CHSC88221  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 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
  CAS-BOT-BC113373  Eleocharis engelmannii Lowell Ahart 1974-11-9 s.n. Butte In rice field, Peter Ahart ranch, Honcut 45 Comment
  UCD49597  Eleocharis engelmannii John M. Tucker 1953-8-28 2677 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC68440  Eleocharis macrostachya L. P. Janeway 1996-5-27 4983 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  JEPS98363  Eleocharis macrostachya Lowell Ahart 2000-6-21 8498 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  SEINET10466798  Eleocharis macrostachya Mary Susan Taylor 1978-9-8 Taylor 1878 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC113339  Eleocharis montevidensis Lowell Ahart 1978-7-15 s.n. Butte On moist soil along edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC113141  Eleocharis pachycarpa Lowell Ahart 1985-8-11 5161 Butte Peter Ahart Ranch, Honcut. On the west side of North Honcut Creek, 45 Comment
  CHSC42381  Eleocharis quinqueflora Lowell Ahart 1987-4-30 5496 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  JEPS98281  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC109751  Eleusine indica Lowell Ahart 2012-10-28 18532 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC69737  Eleusine indica Lowell Ahart 1997-10-25 7946 Butte Lawn, at the Butte County Historical Society museum, Oroville. 60 Comment
  JEPS106243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore 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
  SEINET10501556  Elodea canadensis Mary Susan Taylor 1979-11-11 Taylor 2278 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC33137  Elymus caput-medusae J. D. Jokerst 1980-5-28 801 Butte Top of North Table Mt, S of Cherokee Rd. Comment
  CHSC28861  Elymus elymoides var. californicus J. D. Jokerst 1979-5-18 464 Butte Top of North Table Mt, ca 400 met N of the jct of E edge of Mt and Cherokee Rd. Comment
  CHSC36411  Elymus glaucus J. Boze 1982-4-30 421 Butte Along gravel roadway top of levy south side of Sycamore Creek drainage ca. 1/2 mi. from Eaton Rd. Comment
  SACT001137  Elymus glaucus Herbert Copeland 1930-7-21 Butte In damp woods and meadows. 1500.0 Comment
  CHSC49541  Elymus glaucus subsp. jepsonii Vernon Oswald 1985-6-3 1801 Butte Spur road on the e side of Hwy 32 0.1 mi s of Platte Mtn. Lookout. 1066 Comment
  CHSC117316  Elymus ponticus L. P. Janeway 2016-6-2 12103 Butte Northern High Sierra Nevada. Plumas National Forest; Fileds Ridge Meadow; on the ridge between South Fork Feather River and Sucker Run; 1.5 air-km east-northeast of Ponderosa Reservoir. 872 Comment
  CHSC32668  Enemion occidentale M. S. Taylor 1981-3-24 3448 Butte S side of Hwy 70, ca. 100 ft w of Poe Dam, ca. 1/2 e of Pulga. Comment
  UCD105377  Epilobium brachycarpum E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC31764  Epilobium campestre L. Ahart 1978-6-8 1772 Butte On bottom of small vernal pools and swales. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC34013  Epilobium campestre L. Ahart 1981-7-18 2937 Butte On bottom of a drain ditch along the edge of the Pacific Heights Rd, ca. 1/8 mi w of Hwy 70, ca. 3 mi sw of Oroville. 35 Comment
  CHSC30765  Epilobium canum subsp. latifolium M. S. Taylor 1980-9-27 3344 Butte S side of Hwy 70, at Butte-Plumas county line, on granite wall. 548 Comment
  CHSC75969  Epilobium ciliatum subsp. ciliatum Lowell Ahart; Vernon H. Oswald 1999-8-13 8171 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC600546  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-19 Butte beside Butte Creek (near the source); Jonesville 1800 Comment
  UC765003  Epilobium cleistogamum R. F. Hoover 1936-5-20 1153 Butte 10 mi sw Oroville Comment
  RSA724889  Epilobium glaberrimum subsp. glaberrimum L. Ahart 2006-8-15 13187 Butte 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows 1570 Comment
  POM184022  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-17 s.n. Butte Jonesville; in woods along Butte Creek 457 Comment
  CHSC105809  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
  RSA169435  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi south of Pulga, North Fork of Feather River. 579 Comment
  JEPS115564  Epilobium torreyi Lowell Ahart 2009-5-23 15755 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
  UCD106907  Epilobium torreyi H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles S of Oroville. Comment
  CHSC20496  Epipactis gigantea M. S. Taylor 1975-6-25 802 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  JEPS115378  Epipactis gigantea Lowell Ahart 2009-6-3 15833 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC94606  Equisetum hyemale subsp. affine Lowell Ahart 2006-9-13 13323 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  RSA794970  Equisetum hyemale var. affine L. Ahart 2010-9-13 17151 Butte Oroville Wildlife Area, about 0.5 miles west of Pacific Heights Road, about 3.5 air miles northwest of Palermo. 32 Comment
  UC1586568  Equisetum laevigatum Lowell Ahart 1991-6-22 6663 Butte near Lake Oroville (w of Springtown Rd.) 304 Comment
  CHSC42768  Eragrostis cilianensis Lowell Ahart 1987-8-3 5845 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  HSC92441  Eragrostis cilianensis L. Ahart 1981-9-5 3063 Butte In a garden just a little N of the store in Honcut Comment
  CHSC113541  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC65187  Eragrostis hypnoides Lowell Ahart 1995-8-19 7614 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
  CHSC75983  Eragrostis hypnoides Lowell Ahart; Vernon H. Oswald 1999-8-13 8151 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC284039  Eragrostis mexicana subsp. virescens Lowell Ahart 1981-11-6 3229 Butte East of the Gridley Bridge 35 Comment
  SEINET13711413  Eragrostis pectinacea Lowell William Ahart, Lowell William Ahart 1999-1 8152 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC30530  Eragrostis pectinacea var. pectinacea M. Merryman; R. Banchero 1979-9-23 48 Butte SW of Chico, just e of Ord Ferry and Sacramento River. Riverbank. 30 Comment
  JEPS76253  Eragrostis pectinacea var. pectinacea W. L. Jepson 1939-8-17 19465 Butte Feather River bottom near Oroville; Feather River bottom 45 Comment
  UCD169455  Eragrostis pectinacea var. pectinacea Lowell Ahart 2004-9-14 11402 Butte East part of Palermo, on the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road. 57 Comment
  SEINET10791410  Eragrostis pilosa B. Crampton 1963-9-9 Crampton 6884 Butte Honcut. Comment
  CAS-BOT-BC131515  Ericameria arborescens Lowell Ahart 1976-10-13 s.n. Butte 0.25 mile west of Pinkard Creek which is about 2 miles northwest of The Sly Creek Reservoir Comment
  UC1609001  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  CHSC25464  Ericameria nauseosa var. speciosa Marc Hayes; Warner 1977-9-11 93 Butte Near the top of Humboldt Peak, near Butte-Tehama County line. 2133 Comment
  CHSC115350  Erigeron canadensis Lowell Ahart 2015-2-20 19935 Butte Above the retaining wall, just north of the railroad underpass, on the west side of Hountoon Street, Oroville 68 Comment
  POM173375  Erigeron inornatus var. inornatus H. F. Copeland 1928-8-14 1004 Butte Ridge above Jones Creek, neighborhood of Jonesville Comment
  CHSC61906  Erigeron petrophilus var. sierrensis M. S. Taylor 1981-6-19 3962 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, ca. 20 mi ne of Oroville. Comment
  CAS-BOT-BC295950  Erigeron philadelphicus H. E. Brown 1897-4-15 195 Butte Near Clear Creek Comment
  POM33314  Erigeron philadelphicus C. C. Bruce 1897-04 2076 Butte Pintz [not confident in locality]. Comment
  CHSC35968  Eriodictyon californicum M. S. Taylor 1982-5-23 4514 Butte Scattered on n side of Hwy 70, e side of Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. 487 Comment
  SEINET5495492  Eriodictyon californicum B. Nightingale 1961-4-29 41 Butte Shore of Deer Creek about 20 miles north of Chico on HWY 99E 64 Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CHSC39080  Eriogonum marifolium var. marifolium R. A. Schlising 1981-7-25 4169 Butte N part of county, E of Inskip, at Jones Meadow; margin of forest. 1844 Comment
  CHSC58939  Eriogonum marifolium var. marifolium Lowell Ahart 1992-7-29 6892 Butte Around and on rocks, about 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  UC1032186  Eriogonum nudum var. pubiflorum P. L. Johannsen 1936-7-17 935 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC849636  Eriogonum nudum var. pubiflorum A. A. Heller 1916-9-5 12664 Butte hills 8 mi n Oroville Comment
  CAS-BOT-BC269848  Eriogonum nudum var. pubiflorum Wm. A. D'Egilbert 1923-7-22 s.n. Butte Wyandotte Comment
  SEINET11934611  Eriogonum nudum var. pubiflorum L. P. Janeway 1988-1 2967 Butte Pulga quad. nr. roadside into French Creek .6 mi S of Coyote Gap. Shaley SE-faceing ridge outcrop 1219 Comment
  CHSC30075  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-14 3910 Butte Near Philbrook Reservoir, 2.4 mi E of junction with Skyway, on Philbrook Road. Comment
  CAS-BOT-BC265209  Eriogonum umbellatum var. speciosum M. S. Taylor 1981-9-17 4280 Butte N side of Feather River Hwy 70 at Pulga Bridge, ca. 20 mi ne of Oroville 487 Comment
  JEPS48320  Eriogonum ursinum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2693 Butte Pulga Bridge, west side North Fork of Feather River, Pulga Bridge 472 Comment
  SEINET10479576  Eriogonum ursinum Mary Susan Taylor 1980-7-6 Taylor 3075 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC28939  Eriogonum ursinum var. ursinum M. S. Taylor 1978-7-18 1698 Butte On top of Humboldt Peak. 2154 Comment
  SBBG1660  Eriogonum vimineum H. and M. Dearing 1938-6-21 2044 Butte 15 mi N of Chico Comment
  JEPS110205  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC35696  Eriophyllum lanatum var. croceum J. D. Jokerst 1982-5-1 1547 B Butte N of Concow Resv. N. of Hoffman Rd, ca. 2.0 mi E of Concow Rd. Comment
  CAS-BOT-BC308149  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1977-5-20 1146 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC308159  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1962-6-15 37523 Butte Magalia, Sierra Nevada 731 Comment
  CAS-BOT-BC308171  Eriophyllum lanatum var. grandiflorum A. A. Heller 1913-5-28 10763 Butte 8 miles north of Oroville, Table Mountain 182 Comment
  UC1118267  Eriophyllum lanatum var. grandiflorum P. L. Johannsen 1936-4-16 927 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle, Bolt Creek 1432 Comment
  CHSC95135  Erodium botrys Lowell Ahart 2006-11-12 13541 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC35702  Erodium brachycarpum J. D. Jokerst 1982-5-1 1550 Butte Top of North Table Mt, SE of Cherokee Rd ca. 200 meters at mesa's E edge. 60 Comment
  UCD103168  Erodium cicutarium A. A. Heller 1914-4-21 11312 Butte Chico. Comment
  SEINET10495114  Erodium moschatum Mary Susan Taylor 1975-3-25 Taylor 420 Butte Chico. Comment
  CHSC46111  Eryngium castrense J. D. Jokerst 1982-4-6 1519 Butte East of and adjacent to Highway 99 1.0 mi N of its junction with Neil Rd. Comment
  RSA481930  Eryngium castrense Aaron Liston, Sara Meury 1988-5-28 743 -5 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  POM219573  Eryngium castrense H. F. Copeland 1923-7-9 34 Butte Mud Creek Ranch Comment
  CAS-BOT-BC40750  Erysimum capitatum Lowell Ahart 1987-5-9 5589 Butte Along Pulga Road, about 0.25 mile west of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC38696  Erythranthe bicolor Vernon Oswald 1983-5-8 447 Butte Upper Bidwell Park, Chico, on the w bank of the Diversion Channel between Lindo Channel and Wildwood Ave. 83 Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC8620  Erythranthe bicolor L. V. Ritter 1969-5-20 320 Butte 1 mi. w of Butte Meadows e side of Butte Meadows Rd. Comment
  CHSC43760  Erythranthe breweri Vernon Oswald 1983-8-4 956 Butte Near Humbolt Rd. 3.5 mi n-e of Butte Meadows. 1414 Comment
  CHSC102624  Erythranthe cardinalis Lowell Ahart 2009-8-3 16261 Butte Along a small drainage, about 50 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CAS-BOT-BC153575  Erythranthe floribunda Lowell Ahart 1987-7-3 5786 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC108801  Erythranthe glaucescens Lowell Ahart 2012-4-9 17850 Butte Near a small drainage, about 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC3369  Erythranthe glaucescens M. Gregg 1966-4-23 99 Butte In front of Paradise water reservior number 73. On the Skyway. Comment
  CHSC44682  Erythranthe glaucescens R. Banchero 1980-4-11 103 Butte Along Coutolenc Rd 0.3 mi N of its jct with the Skyway, near the river. 487 Comment
  CHSC44780  Erythranthe glaucescens R. Banchero 1980-4-7 96 Butte Ca 0.5 mi W of the Thermalito Forebay Picnic Area, ca 2.5 mi NW of Oroville. 91 Comment
  SEINET8391710  Erythranthe glaucescens Sean Marquis 1998-4-26 3 Butte 1/4 re mile w of Richardson Springs, next to road. 183 Comment
  CHSC105773  Erythranthe guttata Christopher T. Ivey 2007-7-26 372 Butte Lassen National Forest, Scotts John Meadow. 1750 Comment
  CHSC1771  Erythranthe guttata L. Oliver, D. Sloan 1935-5-10 Butte Butte Creek Canyon. Comment
  SD4699  Erythranthe guttata E. B. Copeland 1929-7-28 464 Butte Jonesville, in a cold stream 1500 Comment
  SEINET8255133  Erythranthe guttata A. A. Heller 1917-7-26 12813 Butte Butte Meadows. 1280 Comment
  CHSC38702  Erythranthe nasuta Vernon Oswald 1983-5-7 443 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.7 mi e of the power lines. 353 Comment
  CHSC44675  Erythranthe nasuta R. Banchero 1980-4-13 115 Butte Along the bluffs 0.7 mi NE of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC50845  Erythranthe tilingii Vernon H. Oswald; Lowell Ahart 1990-7-19 4376 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.4 mi west of the Plumas County line. 1920 Comment
  SEINET10469658  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3504 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET10469671  Erythronium cliftonii Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3416 Butte T22N R5E ne sec 6. Pulga SW quad. Both sides of Hwy 70 at Pulga bridge, on serpentine outcrops, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  UCSB63623  Erythronium multiscapideum Wolt, Terril 1970-3-21 Butte On E. side of Honey Run Rd. 2.5 miles N.E. of Humbug Rd Comment
  SEINET10899973  Erythronium purpurascens Austin AUSTIN s.n. Butte Butte or Plumas County Comment
  CAS-BOT-BC402970  Eschscholzia californica A. A. Heller; H. E. Brown 1902-5-6 5456 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC76951  Eschscholzia californica Margie Collins 1894-5-1 Butte Chico. Comment
  UC85491  Eschscholzia californica Mrs. R. M. Austin Apr., 1886 Butte near Chico Comment
  UC855193  Eschscholzia californica A. A. Heller 1938-4-23 15052 Butte on Feather River Hwy near Yankee Hill road (w side of summit) Comment
  SEINET10904725  Eschscholzia californica Mary Susan Taylor 1975-10-4 Taylor 962 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CAS-BOT-BC419506  Eschscholzia lobbii A. A. Heller 1913-4-6 10714 Butte Hills near Big Chico creek, east of Chico 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
  HSC67920  Eschscholzia lobbii J. P. Smith 1973-3-22 5918 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  UCD73329  Eschscholzia lobbii Chuck Hughes 2008-3-18 20 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  CHSC98570  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Ridge top row of these old trees. 235 Comment
  JEPS114196  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Comment
  UCD144333  Euonymus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1996-7-9 13115 Butte Plumas National Forest. On Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. 1175 Comment
  SEINET10475036  Eupatorium occidentale Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4206 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  SD48502  Euphorbia crenulata E. K. Balls 1957-5-22 22505 Butte Feather River Highway, U. S. 40 alt., 18 miles northeast from Oroville. 700 Comment
  CAS-BOT-BC202427  Euphorbia ocellata A. A. Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, east of Chico Comment
  SEINET10939887  Euphorbia ocellata Mary Susan Taylor 1975-10-3 Taylor 945 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
  CDA38820  Euphorbia peplus L. Ahart 2012-4-17 17877 Butte Area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) sothwest of Oroville. Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  RSA724815  Euthamia occidentalis L. Ahart 2006-9-11 13275 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CHSC49544  Festuca arundinacea Vernon Oswald 1987-10-17 3242 Butte Bolt Creek at a point ca. 1 mi e of Butte Meadows and 0.5 mi s of Humboldt Rd. On the edge of the creek bed. 1341 Comment
  CHSC116989  Festuca microstachys var. pauciflora Lowell Ahart 2016-6-4 20935 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 mile (air) northwest of Forbestown. 732 Comment
  CHSC97181  Festuca subuliflora Lowell Ahart 2007-5-22 13915 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC65888  Filago pyramidata var. pyramidata Vernon H. Oswald 1996-4-20 7404 Butte Sacramento Valley. Sacramento River National Wildllife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC34194  Fimbristylis autumnalis R. A. Schlising 1979-10-13 3502 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC68451  Fimbristylis autumnalis L. P. Janeway 1986-9-20 1878 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Fery Road bridge. 28 Comment
  JEPS117926  Fimbristylis autumnalis John Dittes 2003-10-8 845 Butte Undesignated section of Arroyo Chico Land Grant;ca. 6.0 air miles west by southwest of Chico ca. 2.3 air miles south of State Hwy 32, east Sacramento River, Bidwell-Sacramento River State Park; Northen Sacramento Valley Comment
  JEPS88545  Foeniculum vulgare Vernon H. Oswald and Lowell Ahart 1996-7-22 8076 Butte U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane and Sacramento R. (edge of levee rd. along n. side of Tract 6 - Sanctuary 1); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC27221  Forsythia suspensa var. fortunei P. Moyer; R. Pessner 1972-3-11 115 Butte Footpath 100 ft. from L.S., s bank Chico Creek. CSUC Campus. 60 Comment
  RSA196149  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC62909  Frangula californica subsp. tomentella A. A. Heller 1915-5-17 11881 Butte Canyon of Chico creek 5 mi. e. of Chico. The type was collected about 50 mi. to the s., probably along the Bear River. Comment
  UCD112786  Frangula californica subsp. tomentella J. I. Mallory 1968-5-29 289 Butte 0.75 mile northeast of Union Hill. 670 Comment
  CHSC2937  Fraxinus dipetala W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 426 Comment
  CHSC88863  Fraxinus dipetala Christine Hantelman 2000-4-3 62 Butte Along Cohasset Road. 350 Comment
  UC1594533  Fraxinus dipetala Vernon H. Oswald and Lowell Ahart 1992-4-8 4897 Butte s side Thermalito Diversion Pool (at the nw foot of Sycamore Hill, near abandoned railroad grade in the Oroville Dam Recreation Area); Oroville Dam Recreation Area, Sycamore Hill 73 Comment
  CHSC101743  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico. 203 Comment
  JEPS115585  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC136067  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  POM109752  Fritillaria affinis C. C. Bruce 1897-02 2024 Butte Little Chico Comment
  CAS-BOT-BC130320  Fritillaria eastwoodiae A. A. Heller 1939-4-8 15367 Butte About 4 miles from Magalia on the Coutoleno Road Comment
  CHSC88621  Fritillaria eastwoodiae Linnea Hanson 1985-4-26 268 Butte Plumas National Forest. 792 Comment
  CHSC88632  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 293 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  CHSC4198  Fritillaria recurva J. E. Bowlin 1967-3-10 4 Butte Ca. 10 feet e of Cohasset Rd. and ca. 6.1 miles n of corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  CHSC42432  Galium aparine Lowell Ahart 1987-5-9 5579 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CHSC46591  Galium bifolium V. Oswald; L. Ahart 1989-7-12 3849 .5 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) SE of Philbrook Reservoir. 1901 Comment
  CHSC93865  Galium bolanderi Lowell Ahart 2006-6-9 12661 Butte On the east side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  CHSC28379  Galium grayanum M. S. Taylor; J. Jokerst 1979-7-21 2150 Butte Humboldt Peak, at Butte County-Plumas County line (Humboldt Summit). 2151 Comment
  SEINET10902547  Galium grayanum Mary Susan Taylor 1979-7-21 Taylor 2150 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  RSA107820  Galium nuttallii var. tenue L. S. Rose 1955-6-14 55095 Butte Magalia. 732 Comment
  HSC38059  Galium parisiense Thomas W. Nelson, Jane P. Nelson 1976-5-10 2466 Butte Beside SR 191 just N of its junction with SR 70 Comment
  SEINET10500637  Galium parisiense Lowell Ahart 1985-6-17 Ahart 5062 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  JEPS52624  Galium sparsiflorum subsp. glabrius Lauramay T. Dempster 1964-7-24 4046 Butte 1 mi s Nimshew (near creekbed) 658 Comment
  JEPS18283  Galium sparsiflorum subsp. glabrius Rimo Bacigalupi with H. Whisler 1957-7-26 6037 A Butte along Humbug Rd 2.2 mi sw Nimshew (at eastern canyonside of Butte Creek); eastern canyonside of Butte Creek 609 Comment
  SEINET12331813  Galium trifidum var. pacificum L. Ahart, Ahart, P. 1984-1 4750 Butte about 1.5 mi SE of Bald Mountain, 0.25 mi E of Oak Point, about 5 mi NE of Stirling City 1500 Comment
  UCD121118  Garrya flavescens D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CHSC30816  Garrya fremontii M. S. Taylor; J. D. Jokerst 1980-4-18 2530 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  RSA718330  Gastridium phleoides L. Ahart 2006-6-9 12652 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  SBBG583  Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte 2 mi N of Lone Pine Forest Guard Stn, St Hwy 32 Comment
  JEPS116001  Gastridium ventricosum Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side 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
  JEPS118048  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC37446  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-6-11 3873 Butte NE part of county at Stephens Ridge, just NW of Brush Creek. 1036 Comment
  SEINET10453073  Gayophytum heterozygum Mary Susan Taylor 1977-8-17 Taylor 1480 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC36814  Gayophytum humile L. Ahart 1982-6-4 3556 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CAS-BOT-BC208059  Genista monspessulana Richard R. Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road 1000 Comment
  CDA36729  Genista monspessulana Barbara L. Wilson, Richard E. Brainerd, Lawrence Janeway, Barbara Castro 2010-8-7 16242 Butte Within half a mile of the old Magalia railroad depot, on Coutolenc off the Skyway. Comment
  CHSC106133  Genista monspessulana L. P. Janeway 2011-3-9 10228 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. 42 Comment
  SEINET8263330  Genista monspessulana Richard R. Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road. 1000 Comment
  CHSC99670  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2006-10-26 4467 Butte Butte Creek House Meadow Ecological Reserve, about 3 miles e of Jonesville, along Humbug Road. In turf of large meadow on Butte Creek. 1767 Comment
  CHSC63817  Gentianopsis simplex S. C. Morey 1983-7-23 593 Butte Cherry Hil Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC109068  Geranium carolinianum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17905 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC20044  Geranium dissectum M. S. Taylor 1975-4-18 490 Butte N of Chico. Ca. 1/2 mi e of Hwy 99 on Keefer Rd, ca. 1/2 mi ne of junction of Hwy 99 and Keefer-Lassen Rd. Comment
  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
  JEPS122283  Geranium dissectum Lowell Ahart 2014-4-16 19378 -A Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  UCR237321  Geranium dissectum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18739 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  SEINET10936166  Geranium dissectum Mary Susan Taylor 1975-4-26 Taylor 519 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  JEPS103246  Geranium molle Lowell Ahart 2002-5-7 9625 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CAS-BOT-BC459402  Geum macrophyllum Lowell Ahart 1980-6-20 2416 Butte Along the South Fork of Feather River, Sierra Nevada 800 Comment
  CHSC44413  Gilia capitata subsp. pedemontana Lowell Ahart 1988-5-30 6028 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC82402  Gilia capitata subsp. pedemontana Lowell Ahart 2002-5-7 9626 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC44275  Githopsis pulchella subsp. campestris Vernon Oswald 1988-6-14 3381 Butte Jordan Hill Rd. 1.1 mi (odometer) n of Griffin Gulch. 688 Comment
  CHSC30823  Githopsis specularioides M. S. Taylor; J. D. Jokerst 1980-4-18 2526 Butte On dry open bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC33153  Githopsis specularioides R. Watts 1974-4-30 29 Butte Found ca. 15 mi ne of Chico on Cohasset Road. Comment
  CHSC46114  Githopsis specularioides L. P. Janeway; Margie McNairn 1989-4-29 3227 Butte Near the old hwy 32, 1 1/4 mi north of Ten Mile House. 536 Comment
  HSC43123  Githopsis specularioides Maralyn O'Meara 1974-4-20 276 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC76420  Glinus lotoides Lowell Ahart 1999-10-28 8297 Butte On the bottom of a small wash, just southeast of the small pond where you can park, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET260329 Image available Glinus lotoides Lowell Ahart 1986-1 5437 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Rd, ca 6 mi SW of Oroville 37 Comment
  CDA2162  Glyceria declinata L. Ahart 2000-5-21 8377 Butte On the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. Comment
  UC589870  Glyceria elata P. L. Johannsen 1936-7-17 939 Butte 3 mi sw Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  UCD85123  Glyceria elata August L. Hormay Date Unknown s.n. Butte 3 miles below Butte Meadow on creek. Comment
  SEINET10904836  Gnaphalium luteoalbum Mary Susan Taylor 1977-10-10 Taylor 1529 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CAS-BOT-BC302467  Gnaphalium palustre A. A. Heller 1915-5-28 11911 Butte Near Cohasset Comment
  RSA724997  Gnaphalium palustre L. Ahart 2006-9-11 13277 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  UC601006  Goodyera oblongifolia E. B. Copeland 1938-9-13 Butte Jonesville Comment
  CHSC26817  Gratiola ebracteata M. S. Taylor 1978-5-7 1599 Butte Richvale pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC88245  Gratiola ebracteata Lowell Ahart 2004-7-11 11228 Butte Below the high water line, on the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  UCD80779  Gratiola ebracteata CNPS SN Foothill Team 2005-3-31 SNFN 0073 g Butte CDFG, North Table Mountain Wildlife Area, in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  SEINET13768180  Gratiola ebracteata B. Ertter 1980-5-5 3266 Butte Ca 1.5 mi NE of Honcut btw Oroville and Marysville; Peter Ahart Ranch 30 Comment
  CAS-BOT-BC305284  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC38356  Grindelia hirsutula var. davyi Vernon Oswald 1983-5-25 557 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. On abandoned road. 134 Comment
  CHSC50793  Grindelia hirsutula var. davyi Vernon Oswald; Lowell Ahart 1990-7-31 4416 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  CHSC97007  Grindelia hirsutula var. davyi B. Castro 2007-6-26 1656 Butte Northern High Sierra Nevada. Along Hwy 70 2.1 road miles northeast of Jarbo Gap, at the Plumas National Forest sign; 1.6 air miles northwest of North Fork Feather River. At the east-facing canyon edge of the road pullout area. 633 Comment
  RSA69248  Hastingsia alba Frank W. Peirson 1926-6-21 6776 Butte Butte Meadow, Humboldt Road. Comment
  CHSC6644  Hedera helix M. MacArthur 1968-6-16 340 Butte In kindergarten play area of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC103730  Hedypnois cretica Lowell Ahart 2010-5-16 16680 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 378 Comment
  CAS-BOT-BC306541  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC31428  Helenium bigelovii L. Ahart 1980-7-20 2479 Butte Near the edges of seeps, near Bean Creek Rd, on the s side of Little Bald Rock, ca. 15 mi ne of Oroville. 1100 Comment
  JEPS120538  Helenium puberulum B. Castro, Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Hwy 99, 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal. On W side of canal ~ 20 ft in from toe of W levee. Comment
  CAS-BOT-BC314696  Helianthella californica var. californica A. A. Heller 1915-5-25 11897 Butte Ridge above Enterprise in teh Sierra Nevada 609 Comment
  CHSC27976  Heliotropium europaeum M. S. Taylor 1978-8-11 329 1/2 Butte In field, ca. 50 ft e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. 30 Comment
  CHSC65328  Helminthotheca echioides Lowell Ahart 1995-10-4 7677 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS87516  Hemizonella minima Lowell Ahart 1993-7-29 7114 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 air mi ne of Stirling City) 1584 Comment
  CAS-BOT-BC314996  Hemizonella minima E. B. Copeland 1931-7-12 696 Butte Between Jones and North Willow Creeks, Jonesville 1700 Comment
  CHSC50797  Hemizonia congesta subsp. luzulifolia Vernon Oswald; Mary Bailey 1990-8-2 4426 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  JEPS107420  Hesperevax acaulis var. robustior Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11673 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  CHSC29045  Hesperevax caulescens R. Schlising 1980-4-14 3562 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
  SEINET3840036  Hesperevax caulescens Unknown 2003-5-14 10175 Butte Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  CHSC48602  Hesperolinon micranthum Vernon Oswald 1983-7-6 805 Butte Near Calif. Hwy. 32, 6.3 mi n-e of Forest Ranch. Growing on an old logging road in yellow pine forest. 1036 Comment
  UC478502  Hesperolinon micranthum E. B. Copeland 1931-7-12 656 Butte ridge between Jones Creek and North Willow Creek; Jonesville 1700 Comment
  RSA4246  Heterocodon rariflorum E. B. Copeland 1929-7-16 398 Butte Jonesville. 1550 Comment
  CHSC21132  Heteromeles arbutifolia M. S. Taylor 1975-10-29 967 Butte Along Humbug Rd, ca. 4 mi e of junc of the Skyway and Humbug Rd. Comment
  SEINET267154  Heteromeles arbutifolia T. A. Ranker, P. G. Trapp 1994-6-17 1617 Butte Pence Road south of Paradise. 395 Comment
  CAS-BOT-BC310280  Heterotheca grandiflora Lowell Ahart 1986-11-7 5422 Butte East of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CAS-BOT-BC310277  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mile above Pentz on the Paradise grade Comment
  UCD116346  Hibiscus lasiocarpos var. occidentalis G. L. Webster; G. L. Stebbins 1967-8-27 7533 Butte Howard Slough, along Biggs-Princeton road c. 1/2 mile W of Butte Creek. Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  CHSC51353  Hieracium scouleri var. scouleri Vernon Oswald 1990-7-10 4358 Butte Feather Falls Trail between California Nutmeg Spring and Fall River, ca. 4 mi north of the town of Feather Falls. 603 Comment
  SEINET7930197  Hoita orbicularis Lowell Ahart 1985-7-24 5150 Butte East of the dirt road to the Forbestown Res, about 2 1/2 miles north-east of Forbestown.; 0 869 Comment
  CDA42902  Holcus lanatus L. Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. Comment
  JEPS98510  Holcus lanatus Lowell Ahart 2000-7-17 8594 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC34248  Holodiscus discolor M. S. Taylor 1981-7-17 4069 Butte N side of Feather River Hwy 70 at Pulga bridge on large serpentine outcrop along Pulga Rd near bridge, ca. 20 mi ne of Oroville. 487 Comment
  UCD113340  Holodiscus discolor var. microphyllus H. F. Copeland 1928-8-14 s.n. Butte Bet. Jones Creek and Scotch-John Creek, near Jonesville. Comment
  CAS-BOT-BC150115  Holodiscus microphyllus var. glabrescens H. F. Copeland 1928-8-14 398 Butte Near Jonesville. Between Jones Creek and Scotch-John Creek 1828 Comment
  CAS-BOT-BC311880  Holozonia filipes Bruce G. Baldwin; Lowell Ahart; Gerald Carr 1988-6-9 712 Butte 1 mile north and 3 miles east of Honcut along North Honcut Creek on the Peter Ahart Ranch Comment
  CHSC53988  Hordeum depressum Vernon H. Oswald 1991-4-25 4533 Butte West Liberty Rd, 0.8 mi west of Pennington Rd, on the north edge of Gray Lodge Wildlife Area. Bordering the road near the PG and E Substation. 20 Comment
  CHSC6657  Hordeum murinum subsp. glaucum Marilyn Lee 1968-3-15 111 Butte East side of Cohasset Road, 100 yards north of entrance to Chico Airport. Comment
  CAS-BOT-BC143348  Horkelia californica var. elata Lowell Ahart 1975-6-23 s.n. Butte Near Honcut 53 Comment
  CHSC44164  Horkelia fusca subsp. tenella V. Oswald; L. Ahart 1988-7-26 3614 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CAS-BOT-BC143358  Horkelia tridentata Lowell Ahart 1982-5-8 3413 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  CAS-BOT-BC536256  Horkelia tridentata var. tridentata A. A. Heller 1913-6-7 10793 Butte Near Stirling 1036 Comment
  CAS-BOT-BC536264  Horkelia tridentata var. tridentata Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SFV2584  Hydrocotyle verticillata M. L. Vincent 1960-7-19 113 Butte Sierra Nevada 4 miles south of Paradise at small reservoir off Pentz Road. 450 Comment
  UC1609440  Hydrophyllum occidentale Lowell Ahart 1993-7-6 7056 Butte about 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC29844  Hypericum anagalloides K. R. Stern 1979-5-23 6612 Butte Ca. 5 mi. SW of Paradise. 182 Comment
  CAS-BOT-BC410223  Hypericum concinnum John Thomas Howell 1962-6-16 37595 Butte Feather River West Branch sw of Nelson Bar 304 Comment
  CHSC42930  Hypericum perforatum Lowell Ahart 1987-7-17 5823 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
  CHSC96883  Hypochaeris radicata Lowell Ahart 2007-6-12 14063 Butte East of high ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 Comment
  SEINET7073600  Iris A. G. Vestal 1955-5-20 s.n. Butte Honey Run Road above Honey Run east of Paradise. UTM Zone 10, 615564mE, 4400438mN. Coordinate datum: NAD27. Comment
  HSC23528  Iris douglasiana A. K. Revard 1967-3-19 3 Butte Goat Rock, 1 mi. W on Goat Rock Rd. from Hwy. 1, 6 mi. N of Bodega Bay 30 Comment
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Nov 5 2013
  UC1188257  Iris hartwegii L. W. Lenz and E. K. Balls 1957-5-23 22527 Butte 11.5 mi s Lomo (State Hwy 32) 944 Comment
  CHSC21276  Iris macrosiphon M. S. Taylor 1975-4-13 379 Butte Ca. 75 ft s of the Skyway on Neal Rd, Paradise. 609 Comment
  CHSC90653  Iris macrosiphon Doug Burcombe 1988-4-20 16 Butte 11 mi NNE of Chico. Cohasset ridge. 175 m S of Anderson fork of Rock Creek. 320 Comment
  CHSC52482  Iris tenuissima Rob Lee 1975-5-4 13 -23 Butte Eldredge Drive, Paradise. 304 Comment
  JEPS127197  Isoetes howellii Lowell Ahart 2016-5-30 20881 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  RSA0118713  Isoetes howellii Lowell Ahart 2013-5-22 18703 Butte About 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  CHSC36897  Isoetes nuttallii L. Ahart 1982-6-15 3563 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC40399  Isoetes nuttallii Ahart; Jokerst 1985-5-10 4945 Butte Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  CHSC60936  Isoetes nuttallii Lowell Ahart 1993-5-13 6936 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 32 Comment
  CHSC70784  Jensia rammii B. Castro; L. Gehrung 1995-5-9 567 Butte Ca 4 air mi E of Oroville, ca 2.2 mi E of jcn of Oro-Quincy Hwy with Forbestown Rd, within 15 ft of S edge of Forbestown Rd. 426 Comment
  HSC72758  Jensia rammii M. S. Taylor 1980-5-27 2672 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  CAS-BOT-BC340242  Jensia rammii Lowell Ahart 1979-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC42950  Juncus acuminatus Lowell Ahart 1987-7-17 5821 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA724898  Juncus articulatus L. P. Janeway, Marcia Waterway, Martin Lechowicz 2006-8-3 8823 Butte Old pond below Lumpkin Ridge Road about 10 km east of Feather Falls and about 1.0 km southwest of Lumpkin Ridge Road junction with road to Cascade and Fall River; near head of western branch of Know-nothing Creek. 1209 Comment
  CDA37167  Juncus bufonius CDFA Staff 2010-6-7 s.n. Butte Palermo Road and Highway 70. 0 Comment
  CHSC78328  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC90956  Juncus bufonius var. bufonius Lowell Ahart 2005-4-14 11719 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS88259  Juncus bufonius var. congestus Vernon H. Oswald and Lowell Ahart 1996-5-27 7658 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (sw corner of Tract 3.4, Sanctuary II); Sacramento River Wildlife Refuge, Llano Seca Unit 32 Comment
  CHSC59024  Juncus covillei var. covillei Lowell Ahart 1992-7-27 6863 Butte Along 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
  CDA2694  Juncus cyperoides G. D. Barbe, T. C. Fuller 1982-6-14 3675 Butte Black Bart Road 0.5 mile west of Forbestown Road. Comment
  SEINET11787470  Juncus cyperoides P. Ahart, Ahart, L. 1984-1 4692 Butte ca 0.5 mi SW of jct of Black Bart Rd & Forbestown Rd, ca 14 mi E of Oroville 650 Comment
  CHSC73491  Juncus dubius B. Castro; L. Gehrung 1995-7-26 597 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In center of moist meadow E of road. 1143 Comment
  CHSC96940  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  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
  CHSC44647  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1982-10-7 1660 Butte Along the margins of the West Branch of the Feather River, at Coon Hollow where Forest Service Road 27N74 crosses the river. 1615 Comment
  JEPS98315  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  POM196139  Juncus ensifolius E. B. Copeland 1929-7-16 s.n. Butte Jonesville. 1550 Comment
  SEINET10472284  Juncus ensifolius Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4223 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC42896  Juncus hemiendytus Lowell Ahart 1987-7-3 5778 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC59021  Juncus howellii Lowell Ahart 1992-7-26 6840 Butte Near a small stream, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  JEPS127087  Juncus kelloggii Lowell Ahart 2016-4-15 20750 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CHSC113938  Juncus laccatus Lowell Ahart 2014-8-13 19701 Butte On the bottom of a small drainage, south of the intersection of Humbug Summit Road and Philbrook Road, about 2 miles (air) northwest of Philbrook Reservoir. 1597 Comment
  CAS-BOT-BC312663  Juncus leiospermus Lowell Ahart 1978-5-1 1692 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC47563  Juncus leiospermus var. ahartii Lowell Ahart 1980-5-10 2238 Butte On the bottom of a vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS84924  Juncus leiospermus var. ahartii Barbara Ertter with Lowell Ahart 1986-4-13 5891 Butte ca 2 air mi nne Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  SD121519  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca. 2 miles north and I(c) mile east of Honcut, between Marysville and Oroville. Wet bare soil around the edges of a large vernal pool in one of the farmed fields. Common only around edge of pool. 49 Comment
  CAS-BOT-BC110138  Juncus leiospermus var. leiospermus Lowell Ahart 1979-4-30 1854 Butte 7 miles north of Oroville. On the top of Table Mountain. 400 Comment
  JEPS119681  Juncus leiospermus var. leiospermus Lowell Ahart 2012-5-4 17984 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
  RSA325179  Juncus leiospermus var. leiospermus L. Ahart, M. Taylor, J. Jokerst 1984-4-6 5407 Butte 0.5 miles N of Kunkle Reservoir, along Kunkle Creek, 2 miles S of Paradise, E side of Pentz-Magalia Hwy Comment
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Sep 3 2010
  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
  CHSC31927  Juncus nevadensis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 846 Butte Chico Meadows, 1.1 mi N of Humboldt Rd adjacent to Scout Rd., community of Butte Meadows. 1341 Comment
  CHSC44643  Juncus nevadensis J. D. Jokerst; R. A. Schlising 1982-10-7 1653 Butte On the bottom of a pond. Easternmost pond on the south edge of Coon Hollow. 1706 Comment
  CDA39186  Juncus occidentalis G. D. Barbe, T. C. Fuller 1982-6-14 3679 Butte Black Bart Road, 1.25 miles west of Forbestown Road. Comment
  CHSC113956  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC26748  Juncus patens M. S. Taylor; M. Hayes 1977-8-16 1446 Butte Near man-made ponds on Clear Creek, Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC50698  Juncus tenuis Lowell Ahart 1990-5-25 6483 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile northwest of the Enterprise Bridge across Lake Oroville. 259 Comment
  JEPS118345  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 1009 Comment
  UC1485933  Juncus triformis Lowell Ahart 1980-7-20 2474 Butte ca 15 mi ne Oroville (along Bean Creek Road, near the s side of Little Bald Rock) 1100 Comment
  JEPS113748  Juncus usitatus Lowell Ahart 2007-7-11 14292 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  RSA305774  Keckiella breviflora subsp. glabrisepala James R. Shevock 1972-5-19 1767 Butte Highway 70, north of Lake Oroville. 91 Comment
  CHSC39331  Keckiella breviflora var. glabrisepala Lowell Ahart 1983-6-26 4131 Butte Along Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CAS-BOT-BC237821  Keckiella lemmonii Lowell Ahart 1983-7-24 4209 Butte On the road cutbanks at the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  SEINET10964557  Keckiella lemmonii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4209 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  POM193328  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  CHSC76005  Kickxia elatine Lowell Ahart; Vernon H. Oswald 1999-8-13 8132 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET10811006  Kickxia elatine Lowell Ahart 1995-8-19 Ahart 7611 Butte T17N, R4E, south-east 1/4 Section 11. Normal size plants, on dry sandy soil, 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. 37 Comment
  CHSC31709  Koeleria phleoides Lowell Ahart 1974-4-14 412 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC9457  Kumlienia hystricula Mrs. R. M. Austin and Bruce March 1898 1891 Butte Butte County Comment
  UC217236  Kumlienia hystricula H. M. Hall 1917-5-12 10298 Butte West Branch Feather River, at mouth of Cherokee Creek Cherokee Creek; West Branch Feather River, Cherokee Creek 243 Comment
  CHSC25446  Kyhosia bolanderi Marc Hayes; Warner 1977-9-11 77 Butte Ca. 150 m n of Humboldt Road between Butte Meadows and Jonesville, exactly 8.4 mi from the junction with Hwy 32. 1219 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
  UCD141221  Kyllinga brevifolia John Thomas Howell 1959-9-20 34631 Butte eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC274278  Lachnagrostis filiformis Lowell Ahart 1977-4-29 1520 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS115364  Lactuca serriola Lowell Ahart 2009-7-9 16024 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC340529  Lactuca serriola Lowell Ahart 1983-9-19 4458 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC340530  Lactuca serriola Lowell Ahart 1983-9-19 4457 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CHSC105204  Laennecia coulteri K. R. Stern 1972-9-19 3785 Butte Vic. Eddy Lake, Llano Seco Rancho, ca. 10 mi sw of Chico. Comment
  CHSC28809  Lagophylla glandulosa J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 409 Butte Top of Table Mt, 100 m north of Cherokee Rd at the east edge of the top. 396 Comment
  SEINET10474765  Lagophylla glandulosa subsp. serrata Mary Susan Taylor 1982-6-24 Taylor 4748 Butte T22N R4E sw/ne sec 14. Pulga SW quad. Mixed Evergreen Forest; e side of Ponderosa Way (Rim Rd), 1.6 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2850 ft. 869 Comment
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  RSA32933  Lamium amplexicaule A. A. Heller 1920-4-10 s.n. Butte Butte County: Chico Comment
  SEINET11804897  Lasthenia chrysostoma M. J. Luesebrink 1978-1 2 Butte ca 300 ft N of Skyway Rd, 3.8 mi E of jct with Humbug Rd, 4.6 mi E of jct with Hwy 99, ESE of Chico 274 Comment
  CHSC2425  Lasthenia fremontii R. Carter 1965-3-13 162 Butte On North Table Mountain, these found 40 yds. E of point where Old Cherokee Rd. comes over rim of table, on top of table ca. 15 yds. from rim. 304 Comment
  CAS-BOT-BC354123  Lasthenia fremontii Ahart Lowell 1983-5-12 3974 Butte Valley Grassland. Red gravelly soil along the power line, about 0.5 mile NE of Highway 99 & Pentz Road. 65 Comment
  SEINET11806703  Lasthenia fremontii D. B. Carlson 1980-1 20 Butte ca 19 km NW of Chico, between Singer Creek & Cana-Pine Creek Rd 60 Comment
  CHSC83919  Lasthenia gracilis Lowell Ahart 2003-4-10 10052 Butte Near the east side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
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Jan 19 2011
  CHSC103678  Lathyrus angulatus Lowell Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville. About 11 miles (air) northeast of Oroville. 263 Comment
  JEPS108548  Lathyrus brownii L. P. Janeway, B. Castro 1994-4-21 4643 Butte Northern High Sierra Nevada. Western end of Watson Ridge about 2.0 mi east-northeast of Bald Rock Dome 1079 Comment
  CHSC104801  Lathyrus latifolius Lowell Ahart 2010-6-12 16791 Butte On the north side of Ten Mile House Road, about 1/2 mile (air) from Highway 32, about 9 miles (air) northeast of Chico. 332 Comment
  CHSC24778  Lathyrus nevadensis D. E. Hale 1976-4-4 1 Butte Ca. .75 km from n side of Vilas Rd, ca. 1.6 km ene from Cohasset Hwy-Vilas Rd intersection, 24 km ne of Chico, 835 Comment
  CHSC48509  Lathyrus nevadensis var. nevadensis Vernon Oswald 1984-4-9 1125 Butte Feather Falls Trail, 0.75 trail mi. n of the trail head at the end of Bryant Ravine Road. 701 Comment
  CHSC28159  Lathyrus tingitanus R. J. Goedl 1979-4-21 32 Butte Ca. 5 mi n of Oroville, 5 ft w of Cherokee Mountain Road. 335 Comment
  CHSC109080  Laurus nobilis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17908 Butte On the north side of the path, near the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC80530  Lavatera cretica Lowell Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 1/4 miles (air) northwest of Honcut, about 1 mile south of Oroville. 29 Comment
  CDA4996  Lavatera cretica L. Ahart 2001-4-19 8730 Butte On the east side of Highway 70, about 50 yards south of Middle Honcut Road, about 3 /14 miles (air) northwest of Honcut, about 1 mile south of Oroville. Comment
  CHSC2831  Layia fremontii David Prall 1965-3-28 16 Butte In field east of Meridian Rd. 8 miles NE of HW. 99E north of Chico. 60 Comment
  CHSC65987  Layia fremontii Vernon H. Oswald 1996-4-26 7455 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the NW corner of the north paddock of Tract 7, Sanctuary II. 32 Comment
  CAS-BOT-BC321756  Layia fremontii A. A. Heller 1914-4-4 11292 Butte Hills 8 miles N of Oroville Comment
  CAS-BOT-BC321760  Layia fremontii Ira L. Wiggins 1925-3-25 1406 Butte 3.5 mi. E of Durham on States Land Colony Highway. Comment
  HSC38062  Layia fremontii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2470 Butte Beside SR 191 just N of its junction with SR 70 Comment
  CAS-BOT-BC274353  Leersia oryzoides Lowell Ahart 1977-8-14 1543 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC32121  Lemna minuta L. Ahart 1975-1-9 696 Butte In dredger pond near edge of North Honcut Creek, from Honcut go e to Dunstone Dr, stop when at s curve, then go w ca. 1/4 mi to North Honcut Creek; 2 mi n and 3 mi e of Honcut. 60 Comment
  UCD115254  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  UC203607  Lepidium nitidum A. A. Heller 1914-4-11 11274 Butte 8 mi n Oroville Comment
  SEINET10907264  Lepidium nitidum Mary Susan Taylor 1973-1 Taylor 42 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC34026  Lepidium pinnatifidum L. Ahart 1981-7-26 3013 Butte Ca. 1/2 mi s of the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  JEPS98681  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte NE of Oroville Post Office (S side of the Ehmann Home) 36 Comment
  CHSC57221  Lepidium strictum Vernon H. Oswald; Lowell Ahart 1992-3-24 4886 Butte Near Oroville at the junction of Burma and Cherokee roads, Lake Oroville Recreation Area on the west side of Thermalito Diversion Pool. In parking area located here. 74 Comment
  CAS-BOT-BC13066  Lepidium virginicum var. menziesii H. F. Copeland 1930-7-18 1333 Butte Jonesville. 1524 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
  CHSC58674  Leptochloa fusca subsp. uninervia M. Bailey 1991-6-6 Butte West side of Clark Road, ca 1 mi n of its jct with Pentz Road, in the vicinity of the jct of West Branch Lane. 76 Comment
  CHSC32132  Leptosiphon androsaceus L. Ahart 1976-4-7 1036 Butte Hillside near the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1277  Leptosiphon bicolor P. Delaplane 1965-3-23 77 Butte H. Wurlitzer Ranch ca. 13 mi. NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC31388  Leptosiphon bicolor J. D. Jokerst 1979-4-13 1196 Butte Top of North Table Mt., W edge of mt in the vicinity of Coal Cr Canyon. 365 Comment
  UCD72995  Leptosiphon bicolor 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
  UCSB63627  Leptosiphon bicolor Curtis, Lisa 1982-4-17 Butte no data 88 Comment
  CHSC34991  Leptosiphon bolanderi R. A. Schlising 1981-4-27 4041 Butte S of Cohasset on Cohasset Ridge, ca 1/4 mi E of Cohasset Highway. 441 Comment
  CHSC40923  Leptosiphon bolanderi Lowell Ahart 1985-5-15 4984 Butte Ridge, east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC28165  Leptosiphon ciliatus J. D. Jokerst 1979-5-7 222 Butte Along roadside. Cohasset Hwy., 5 mi N. of Chico Muni. Airport. 365 Comment
  CHSC2384  Leptosiphon filipes R. Carter 1965-3-23 172 Butte Found ca. 20' inside gate to Richardson Springs just off Cohasset Rd. 20' N of road. 167 Comment
  CHSC29789  Leptosiphon filipes M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2870 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC30791  Leptosiphon filipes M. S. Taylor 1980-5-27 2677 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC3523  Leptosiphon parviflorus John Francis 1966-4-23 128 Butte In pasture, Table Mt. Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  CHSC27621  Lessingia virgata Robert A. Schlising 1977-10-9 3208 Butte Cohasset Road S of Cohasset, 3.0 mi NE of road to Richardson Springs and 3.3 mi NE of crossing of Mud Creek. Roadside. Comment
  UCD159567  Leucanthemum maximum D. S. Park 2011-6-27 304 Butte East shore of Thermalito Afterbay. Growing on roadsides. Disturbed. 1999 Comment
  CHSC35976  Leucothoe davisiae M. S. Taylor 1982-6-24 4744 Butte Rag Dump 5, ca. 2 mi n of Flea Mt., ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  CHSC42025  Ligusticum grayi Lowell Ahart 1986-7-2 5339 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  UC2026869  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte On the south side of the paved park road, west of entrance from Woodland Avenue, Lower Bidwell Park, Chico. Comment
  RSA776054  Lilaea scilloides P. Reisentz 1979-5-11 s.n. Butte 0.7 mile W on Lunt Road from Highway 70, north of Oroville Comment
  CAS-BOT-BC133044  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer; Ira L. Wiggins 1940-7-6 10 Butte About 1/2 mile west of Chaparral 1554 Comment
  SEINET10495212  Limnanthes alba Mary Susan Taylor 1981-5-7 Taylor 3643 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  CHSC60992  Limnanthes alba subsp. alba Lowell Ahart 1993-5-17 6951 Butte On the bottom of a large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC88867  Limnanthes alba subsp. alba Christine Hantelman 2000-5-3 87 Butte In drainage cut on north side Wookey Road, 0.5 mi east of Meridian. 1920 Comment
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Apr 7 2008
  HSC93611  Limnanthes alba subsp. versicolor James D. Jokerst, R. S. Schlising 1982-5-19 1576 Butte NE of Camp 18 on Lumpkin Ridge Rd. 1280 Comment
  SEINET6670265  Limnanthes alba var. alba C. T. Mason 1949-4-23 1252 Butte 7 miles south of Oroville, along the east side of State Highway 24 Comment
  RSA590211  Limnanthes douglasii subsp. douglasii Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7236 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC30383  Limnanthes douglasii subsp. nivea J. D. Jokerst 1979-3-20 1147 Butte Around the edges of vernal pools and creeks. Top of North Table Mt., ca .5 mi N of the Jct of Cherokee Rd and the E edge of the Mt. 396 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
  CHSC38539  Limnanthes douglasii subsp. rosea Vernon Oswald 1983-3-5 117 Butte Upper Bidwell Park, Chico, near the s-e corner of the Omicron Enclosure. 85 Comment
  POM86188  Limnanthes douglasii subsp. rosea R. M. Austin 1883-05 s.n. Butte Mesa. Comment
  CHSC102546  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-31 Butte Northern Sacramento Valley. Near the base of the foothills in-between where Wookey road and Munjar Road terminate. 106 Comment
  CHSC67542  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3238 Butte Doe Mill population N of Warfield Rd., E of Bruce Rd., W of Butte Creek Diversion Channel. On young fan deposits of Little Chico Creek. 76 Comment
  CHSC112705  Limosella acaulis Lowell Ahart 2013-10-26 19218 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  SEINET10496780  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1974-5-3 Taylor 212 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. 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
  SEINET10496796  Linanthus ciliatus Mary Susan Taylor 1982-6-24 Taylor 4740 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  CHSC24766  Linanthus dichotomus P. J. Welch 1976-4-12 17 Butte Ca. 0.65 mi e along Crown Pt. Rd. from intersection with Deer Creek Hwy. (Hwy. 32) and ca. 30 yds n of Crown Pt. Rd.; 10.4 mi ene of Chico. 304 Comment
  CHSC76954  Linanthus dichotomus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  SEINET10496801  Linanthus filipes Mary Susan Taylor 1980-5-27 Taylor 2677 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
  RSA0096837  Linanthus filipes H. F. Copeland 1929-5-4 1124 Butte Canyon of Chico Creek. Comment
  UC880250  Linanthus filipes A. A. Heller 1915-7-10 12074 Butte near Skyhigh (on the Oroville-Quincy road); Sierra Nevada 1066 Comment
  POM219475  Linanthus pungens subsp. pulchriflorus E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top west of the Summit 2150 Comment
  CHSC50689  Lindernia dubia var. anagallidea Lowell Ahart 1990-5-25 6485 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC94583  Lindernia dubia var. anagallidea Lowell Ahart 2006-9-11 13292 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
  SBBG121597  Lindernia dubia var. anagallidea L. Ahart 2007-7-8 14271 Butte North Honcut Crk, Peter Ahart Ranch, ca. 0.75 mi N and 2.5 mi E of Honcut, ca. 12 mi (air) SE of Oroville Comment
  CHSC48015  Linnaea borealis var. longiflora Vernon Oswald 1985-6-17 1845 Butte Quartz Creek' Rd., 0.4 mi S of Fall River, ca. 6 air miles NE of Feather Falls. 1066 Comment
  CHSC116705  Linum bienne Lowell Ahart 2016-5-14 20825 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. 57 Comment
  CHSC109570  Linum lewisii var. lewisii L. P. Janeway 2012-6-7 10867 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC20125  Liquidambar styraciflua M. S. Taylor 1975-5-6 563 Butte California State University, Chico, ca. 3 ft se of Little Cafeteria. 60 Comment
  CHSC1652  Lithophragma bolanderi D. Stover 1929-4-18 Butte Bidwell Park. 76 Comment
  CHSC2470  Lithophragma bolanderi R. Carter 1964-5-16 98 Butte Found Feather R. Canyon, 300 yds. W of Cresta Power House on S side of Hwy. 40A. 609 Comment
  CHSC4032  Lithophragma parviflorum Sadie Gualtieri 1967-3-6 Butte Collected: On Skyway to Paradise, 3 to 5 miles outside Chico, open fields on N. side hiway. Comment
  SBBG17379  Lithophragma parviflorum M. Vincent 1961-3-28 15 Butte overlooking Butte Crk; Skyway, 4 mi W of Paradise on rd to Chico 609 Comment
  CHSC92562  Lithophragma parviflorum var. trifoliatum L. P. Janeway 2005-3-10 8354 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CAS-BOT-BC316346  Lithospermum californicum Wayne Roderick 1967-4-15 s.n. Butte In Pinkton Canyon, Feather River. 609 Comment
  CAS-BOT-BC342380  Logfia gallica Lowell Ahart 1988-5-12 5998 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
  SEINET10960424  Lolium multiflorum Laurel L. Huey 1980-4-25 Huey 19 Butte T22N, R1E, Sec 10, (Richardson Springs SW Quad 15'). Immediately S of Chico Muni Airport, W of Cohasset Highway. 60 Comment
  CAS-BOT-BC269078  Lolium perenne John Thomas Howell 1951-6-26 27518 Butte Big Bend Mt. 609 Comment
  CAS-BOT-BC271209  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte Hills 8 miles north of Oroville Comment
  CHSC4048  Lomatium dasycarpum subsp. tomentosum Ann Dolder 1967-4-26 Butte Ca. 1000 yards e of Salmon hole near rock cliff, Bidwell Park, Chico. 76 Comment
  UC1532355  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-20 2033 Butte between Chico and Forest Ranch (w. side of Hwy. 32 at Crown Point Rd.) 597 Comment
  UC566806  Lomatium nudicaule Herbert L. Mason 1927-5-11 3726 Butte vicinity of Dobbins 457 Comment
  CHSC38741  Lomatium utriculatum Vernon Oswald 1983-4-14 488 Butte Upper Bidwell Park, Chico, on the north rim ca. 3000 ft e of the power lines. 316 Comment
  RSA339134  Lonicera hispidula var. vacillans Margaret J. Williams, W. Roderick 1984-5-25 84- 23 -1 Butte Feather River Canyon, Hwy 70, 1.5 miles W of Poe Power Dam. 457 Comment
  SEINET7085240  Lonicera interrupta Steven R. Hill 2010-7-17 38551 Butte Junction of Forbestown Road and upper end of Black Bart Road. Elevation 2800 - 3000 feet [2442 feet]. Sierra Nevada. Coordinate Datum: WGS84/NAD83. 744 Comment
  CAS-BOT-BC241434  Lonicera involucrata var. involucrata H. F. Copeland 1920-8-29 141 Butte Jonesville 1219 Comment
  SEINET11263890  Lotus argophyllus var. fremontii Lowell Ahart 2000-6-27 8516 Butte Yellow Pine Forest. T21N, R6E, SE 1/4 Section 30. Big Bald Rock, about 3 air miles E of Madrone Lake, about 12 air miles NE of Oroville.; 0 994 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
  SEINET5736944 Image available Lotus nevadensis Lowell Ahart 1985-1 5039 Butte Lake Oroville, at the Enterprise Launch Area and about 0.75 mile W of the Enterprise Bridge across Lake Oroville, NE of Oroville.; Oroville 274 Comment
  SEINET7042709  Lotus wrangelianus A. G. Vestal 1963-5-9 s.n. Butte At lower slope of lava mesa. Road to Chico. Ca. 11 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 604825mE, 4383603mN. Comment
  JEPS109763  Lunaria annua Dean W. Taylor 2005-7-15 19411 B Butte Stirling City, dirt logging road in Long Ravine ca. 1 mile N from County Road 61 960 Comment
  CAS-BOT-BC198302  Lupinus John Thomas Howell 1976-4-1 51536 Butte Table Mountain, 4-5 miles north of Oroville 304 Comment
  CHSC90029  Lupinus albifrons Keith Bunney 1991-4-21 2 Butte West side of Hwy 162, 2.9 mi ne of Oroville. 121 Comment
  SEINET11071667 Image available Lupinus albifrons H. E. Brown 1897-5-1 Butte near Clear Creek Comment
  CHSC36098  Lupinus apertus R. A. Schlising; K. Tarp, D. Burk 1982-6-16 4298 Butte E part of county, 0.7 mi S of Plumas County line on Oroville-Quincy Hwy. Comment
  CHSC51045  Lupinus arbustus J. D. Jokerst 1985-4-22 2261 Butte Top of Cohasset Ridge in community of Cohasset, SE of Cohasset Hwy and Cave Creek. 609 Comment
  UC600401  Lupinus arbustus E. B. Copeland 1931-6-19 Butte Jonesville Big Summit, Jonesville (Big Summit); Jonesville Comment
  RSA699516  Lupinus arbustus Paul Maslin 2004-4-15 14 Butte Sierra Nevada Range, west of Highway 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). 457 Comment
  UCD106792  Lupinus argenteus var. argenteus A. A. Heller 1915-6-25 11859 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  CHSC28461  Lupinus bicolor R. A. Schlising 1979-4-8 3353 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162-to-Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  UC725527  Lupinus bicolor A. A. Heller 1939-4-10 15376 Butte Lower part of the Chhasset road near the foot of the grade near Rock Creek. Comment
  JEPS119548  Lupinus bicolor var. pipersmithii Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17865 Butte East of the Deer Pen, between Tables 12 & 13 Lower Bidwell Park, Chico. Comment
  CHSC65779  Lupinus bicolor var. tridentatus Vernon Oswald 1996-4-10 7357 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in an equiptment storage lot off of 7 Mile Lane near the S end of Tract 8, Sanctuary 2. 33 Comment
  CHSC93459  Lupinus bicolor var. tridentatus Lowell Ahart 2006-5-8 12595 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  HSC66228  Lupinus densiflorus Thomas A. Welgan 1979-4-15 9 Butte 4.5 mi N of Oroville, 5 ft. W of Cherokee Mtn. Rd. 305 Comment
  SEINET10450558  Lupinus formosus Lowell Ahart 1984-6-8 Ahart 4682 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  CDA13259  Lupinus grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13110 Butte Plumas National Forest; Nr. headwaters of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  SEINET10484003  Lupinus grayi Lowell Ahart 1985-6-17 Ahart 5046 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC37674  Lupinus latifolius M. S. Taylor 1982-8-16 5002 Butte At loop in road above Discovery Creek, ca. 1 mi n of Bald Mt, ca. 4 mi ne of Stirling City. 1584 Comment
  CHSC108711  Lupinus microcarpus var. microcarpus B. Castro; L. Janeway 2009-5-5 1782 Butte Sacramento Valley. Ca 4.8 air mi NW of Oroville, on N side of Cottonwood Rd, 2.7 mi E of Hwy 99 and 0.3 mi E of main entrance to PG and E substation. 49 Comment
  UC1076230  Lupinus nanus Herbert L. Mason 1927-5-10 3712 Butte ne of Oroville Table Mountain (Cherokee Mine); , Cherokee Mine Comment
  UC1129656  Lupinus nanus J. E. Sowder 1933-5-26 77 Butte 1/4 mi nw Yankee Hill; Chico Quad., nw of Yankee Hill Comment
  UCD109079  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  RSA724911  Lupinus nanus subsp. nanus L. P. Janeway 2006-5-24 8607 Butte Northern Sierra Nevada Foothills, near the eastern shores of Lake Wyandotte, 7 air km ESE of Oroville Dam. 422 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 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
  CHSC32763  Lupinus pachylobus J. D. Jokerst 1981-3-29 1280 Butte Top of North Table Mountain, ca. 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC117855  Lupinus polycarpus L. P. Janeway 2016-5-9 11946 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  SEINET10937164  Lupinus polyphyllus subsp. superbus Mary Susan Taylor 1977-7-15 Taylor 1418 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  CHSC48561  Lupinus polyphyllus var. burkei Vernon Oswald 1984-6-11 1280 Butte Near Humboldt Rd, at Butte Creek, 0.2 mi w of Cherry Hill Campground. 1414 Comment
  CHSC63813  Lupinus polyphyllus var. burkei S. C. Morey 1983-7-23 590 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS23890  Lupinus polyphyllus var. burkei A. A. Heller 1938-7-20 15279 Butte upper end Snag Lake (7 mi e of Chaparral); upper end of Snag Lake 1524 Comment
  UC600395  Lupinus polyphyllus var. burkei H. F. Copeland 1931-6-10 Butte Jonesville Comment
  CHSC62740  Lupinus stiversii L. P. Janeway 1993-6-10 4381 Butte Plumas National Forest. Southwest side of Watson Ridge, ca 1.5 mi east of Bald Rock Dome. 822 Comment
  SEINET10452166  Lupinus vallicola Mary Susan Taylor 1981-5-1 Taylor 3588 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  RSA712860  Lupinus vallicola subsp. vallicola L. Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon,about 2 miles northwest of the parking area, cow chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 338 Comment
  RSA43304  Lupinus vallicola subsp. vallicola W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  SEINET10969784  Lupinus vallicola subsp. vallicola Taylor 1982-5-2 Taylor 4381 Butte Along truex rd in foothill woodland, .5 mi w of its jct with hwy 70, ca 10 air Mi n of oroville. With petrorhagia velutina, solanum parishii. Comment
  HSC95781  Luzula comosa Jim Jokerst, Robert A. Schlising, L. Ahart 1982-5-8 1563 Butte 2.5 mi E of Forbestown along rd. to Forbestown reservoir, just S of creek Comment
  CHSC113511  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 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
  CHSC96801  Luzula macrantha 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
  CHSC98955  Luzula macrantha Lowell Ahart 2008-5-8 14724 Butte Below the high water line of Lake Oroville, about 50 yards south 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
  CHSC43003  Luzula parviflora L. P. Janeway 1987-6-19 2233 Butte Sly Creek, 2.1 mi from the Challenge-LaPorte Rd on the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  UC1609042  Luzula parviflora Lowell Ahart 1993-7-23 7108 Butte about 6 air mi ne of Feather Falls (about 1/8 mi s of campgrounds on the large gravel bar along Fall River); s of Fall River 1036 Comment
  SFV10919  Lythrum hyssopifolia M. L. Vincent 1963-6-9 413 Butte Sierra Nevada De Mille Road, south of Paradise. 520 Comment
  UC1191546  Lythrum hyssopifolia Herbert L. Mason, Verne Grant 1946-8-6 12973 Butte 2.7 mi n of colusa (between Sacramento River and Butte Creek, Butte Sink); Butte Sink Comment
  OBI48938  Lythrum hyssopifolia Lewis S. Rose 1939-6-11 39275 Butte 3 mi E of Honcut 46 Comment
  CHSC84017  Lythrum portula Lowell Ahart 2003-6-23 10301 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC34017  Lythrum salicaria L. Ahart 1981-7-18 2938 Butte On the bottom of a deep drain ditch along the edge of the Pacific Heights Rd, ca. 1/8 mi w of Hwy 70, ca. 3 mi sw of Oroville. 35 Comment
  UC1229853 Image available Lythrum salicaria Rimo Bacigalupi with G. T. Robbins 1955-7-22 5441 Butte about 2.5 mi s of Oroville (at junction of road to Palermo, along edge of Feather River); Feather River 48 Comment
  CHSC112696  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte Edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  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
  CAS-BOT-BC342641  Madia citrigracilis Bruce G. Baldwin; Vern Oswald 1988-6-16 716 Butte Near Pulga, along Camp Creek Road 512 Comment
  CAS-BOT-BC342715  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  CHSC26643  Madia elegans subsp. densifolia M. S. Taylor 1977-11-12 1541 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC50543  Madia elegans subsp. elegans Vernon Oswald 1990-7-10 4360 Butte Feather Falls Trail between the 0.5 and 1.0 mile posts, ca. 2 miles north of the town of Feather Falls. Along the trail. 609 Comment
  CHSC60956  Madia exigua Lowell Ahart 1993-6-20 6979 Butte At Camp 18, about 5 (air) miles north-east of Feather Falls. 1158 Comment
  CAS-BOT-BC342951  Madia gracilis M. S. Taylor; M. Hayes; R. Schlising 1977-8-17 1458 Butte On n side of Old Humboldt Rd, ca 4.5 mi ne of Butte Meadows turnoff from Hwy 32 1326 Comment
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North 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
  SEINET10474812  Madia gracilis Mary Susan Taylor 1977-8-17 Taylor 1458 Butte Abundant on E side of Humboldt Road, in thin, dry rocky soil, open area in Yellow Pine Forest, ca. 4.5 mi NE of Butte Meadows turnoff from Hwy 32. 1326 Comment
  CAS-BOT-BC345241  Madia subspicata A. A. Heller 1915-5-17 11878 Butte Along Chico Creek 5 miles east of Chico Comment
  CAS-BOT-BC345233  Madia subspicata Lowell Ahart 1978-6-2 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 50 Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CDA13274  Malacothrix floccifera G. F. Hrusa, T. D. Wilfred 1996-7-9 13122 Butte Plumas National Forest; N ridge above Jordan Creek. Nr. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC39354  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte Along the dirt road, about 1 mile east of Milsap Bar, about 25 miles north-east of Oroville. 750 Comment
  SEINET10475286  Malacothrix floccifera Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4723 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  JEPS115578  Malva nicaeensis Lowell Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC28446  Marah macrocarpa Robert A. Schlising; R. Waaland 1965-3-27 2764 Butte Just north of city Gridley limits, junction of Gridley Road and unnamed dirt road running west. Comment
  CHSC42547  Marah watsonii Lowell Ahart 1987-5-12 5648 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC21052  Marsilea vestita M. S. Taylor 1975-10-4 958 Butte On e edge of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC5140  Marsilea vestita P. Delaplane 1965-3-23 45 Butte H. Wurlitzer Ranch; ca. 13 mi. NW of Chico, W of Hwy 99E N. Butte Co. 60 Comment
  CHSC58671  Marsilea vestita M. Bailey 1991-7-27 Butte Lake Concow Reservoir. 762 Comment
  HSC32657  Marsilea vestita Dave Knorr 1974-4-20 114 Butte 1 mi. E of Hwy. 99 S of Chico on Skyway Rd. Comment
  SEINET10530351  Marsilea vestita Mary Susan Taylor 1980-7-6 Taylor 3051 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC20050  Matricaria discoidea M. S. Taylor 1975-4-11 456 Butte Along Upper Bidwell Park Road, near Salmon Hole, Upper Bidwell Park, Chico. Comment
  JEPS115591  Matricaria discoidea Lowell Ahart 2009-4-22 15568 Butte Along the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC90233  Meconella californica Ross L. Jones 1989-4-12 24 Butte Ca. 100 m s of Butte Creek and 200 m w of Covered Bridge, 10.2 km ese of Chico. 150 Comment
  UCD95461  Meconella californica M. C. Earley 1982-4-16 5 Butte 11 miles ESE of Chico. 112 Comment
  CHSC42528  Medicago lupulina Lowell Ahart 1987-5-6 5524 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC40916  Medicago praecox Lowell Ahart; John Thomas Howell 1976-4-1 1030 Butte Along Cherokee Road, about 1/4 mile north of the large parking area, Table Mountain, north of Oroville. 365 Comment
  RSA715569  Medicago praecox L. 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 Ord bend, about 12 miles (air) southwest of Chico. 26 Comment
  CHSC3335  Melaleuca leucadendra Robert L. Smith 1966-3-3 25 Butte U. S. Plant Introduction Station 5 miles S. E. of Chico. Comment
  CAS-BOT-BC269373  Melica californica Lowell Ahart 1987-5-9 5581 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CAS-BOT-BC269391  Melica californica M. S. Taylor 1982-5-21 4490 Butte On n side of Hwy 70 along Pulga Rd near Pulga bridge over Feather River; ca. 20 air mi ne of Oroville 487 Comment
  JEPS113256  Melica californica Lowell Ahart 2007-5-29 13924 Butte About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northea 598 Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  RSA403523  Melica harfordii L. Ahart, P. Ahart 1984-6-10 4713 Butte About 2 miles SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  SD122518  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CAS-BOT-BC262501  Melica torreyana A. A. Heller 1902-5-8 5511 Butte Berry Canyon (near Clear Creek) Comment
  CDA30212  Melissa officinalis L. Ahart 2009-7-9 16014 Butte On the east edge of Big Chico Creek, about 15 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
  CHSC753  Melissa officinalis V. Holt; M. Underhill 1952-7-21 Butte 304 Comment
  JEPS119619  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte About 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC52226  Mentha canadensis L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3094 Butte W side of Murphy Slough, across from Golden State Island. 38 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
  CHSC94587  Mentha spicata var. spicata Lowell Ahart 2006-9-13 13319 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC29293  Mertensia ciliata var. stomatechoides R. A. Schlising; R. Banchero 1980-6-2 3635 Butte Northern Butte Co., at first crossing of Butte Creek by Humboldt Road above Butte Meadows. Streamside. Comment
  CAS-BOT-BC429200  Micranthes oregana H. F. Copeland 1929-6-1 1240 Butte Jonesville 1524 Comment
  SJSU10057  Micropus californicus C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  UCR187081  Micropus californicus Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 012 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  POM225969  Micropus californicus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  POM57380  Micropus californicus E. B. Copeland 1903-5-2 s.n. Butte Chico Comment
  CAS-BOT-BC348464  Micropus californicus var. californicus Lowell Ahart 1985-5-15 4994 Butte West of a small stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC394  Micropus californicus var. californicus M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 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
  SEINET10473428  Microseris Mary Susan Taylor 1981-5-7 Taylor 3639 Butte T20N R6E nw sec 36, Forbestown quad. S side of 20N24.8, ca. 3 mi S of Feather Falls community. Yellow Pine Forest; 2200 ft. 670 Comment
  CAS-BOT-BC348699  Microseris acuminata Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC101080  Microseris acuminata Lowell Ahart; John Dittes 2009-3-20 15516 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC20384  Mimetanthe pilosa L. M. Mayer 1975-6-21 400 Butte Growing beside the Sacramento River below Ord Ferry Bridge. Comment
  CHSC37139  Mimetanthe pilosa L. Ahart 1982-8-22 3752 Butte Along edges of North Honcut Creek, a little sw of the Peter Ahart Ranch, ca. 1 mi n and 2 and 3/4 mi e of Honcut. 50 Comment
  JEPS86871  Mimulus angustatus David M. Thompson 1988-3-24 853 Butte 4.4. mi ne Keefer Road (along Cohasset Hwy, then 0.4-0.6 mi s along private dirt road, Griffith residence); Cohasset Ridge 400 Comment
  POM202464  Mimulus aurantiacus var. grandiflorus L. S. Rose 1933-5-26 33186 Butte Feather River Canyon 5 mi. e. of Oroville 152 Comment
  RSA339151  Mimulus aurantiacus var. grandiflorus Margaret J. Williams, W. Roderick 1984-5-25 84- 24 -1 Butte Feather River Canyon, Hwy 70, near arch Rock Tunnel Comment
  HSC96068  Mimulus bicolor L. P. Janeway 2005-5-29 8398 Butte Northern High Sierra Nevada. Between the E end of Hollywood Dr., Magalia and upper end of Magalia Reservoir 762 Comment
  SEINET12319564  Mimulus bifidus Unknown 1978-1 17 Butte ca 4 mi SE Concow Reservoir, 13.5 mi NE of Oroville, 0.7 mi S on Dark Canyon Rd, E side of road 549 Comment
  JEPS115643  Mimulus cardinalis Lowell Ahart 2009-8-23 16290 Butte About 30 yards west of the seep at the base of a large rock, northwest of a broad open drainage in oak woodland, about 150 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 266 Comment
  SEINET10830523  Mimulus cardinalis Mary Susan Taylor 1975-6-25 Taylor 798 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  JEPS109856  Mimulus glaucescens Dean W. Taylor 2006-6-28 19554 Butte West Branch Feather River; growing on the diversion dam and nearby cliffs just upstream from the Reston Road Bridge, vicinity of Striling 993 Comment
  JEPS50780  Mimulus glaucescens Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9282 Butte just above Pulga Bridge; North Fork Feather River Canyon Comment
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Mar 15 2006
  UCD122721  Mimulus glaucescens Kirsten L. Tarp 1981-4-20 7 Butte Bidweel Park e of Chico, n of Chico municipal golf course. 97 Comment
  UCSB63616  Mimulus glaucescens Griffiths, Troy 1988-3-15 Butte Vic. Salmon Hole; ca. 5 mi e of Chico Municipal Golf Course; Chico 121 Comment
  SEINET10830513  Mimulus glaucescens Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5383 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  JEPS110124  Mimulus guttatus 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
  UCR190823  Mimulus guttatus 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
  SEINET10570356  Mimulus guttatus Mary Susan Taylor 1975-4-26 Taylor 534 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET12332656  Mimulus guttatus D. E. Young 1983-1 18 Butte North Table Mountain, 5 mi W of Cherokee Rd & 1.3 km SW of Oregon Gulch Rd, 7.2 km E of Hwy 70 & 9.2 390 Comment
  HSC32602  Mimulus kelloggii Linda M. Barker 1974-4-20 163 Butte Table Mtn., Central Valley 305 Comment
  SEINET10570234  Mimulus kelloggii Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5390 Butte T23N R3E sec 28? S side of Humbug Rd, ca. 3.5 mi SW of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  JEPS9651  Mimulus latidens A. A. Heller 1914-5-1 11343 Butte 6 mi from Chico (on the Chico-Hamilton road) Comment
  RSA712757  Mimulus layneae L. P. Janeway 2005-5-29 8399 Butte Northern High Sierra Nevada. Between the east end of Hollywood Drive, Magalia and the upper end of Magalia Reservoir. (NAD83) 762 Comment
  UCD85075  Mimulus layneae Dena Grossenbacher; Marisano James 2009-6-7 1032 -b Butte Along Bean Creek Road 1.1 miles east of junction with Bald Rock Road. Private property. 983 Comment
  UC1594557  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  CHSC44774  Mimulus moschatus R. Banchero 1980-7-2 277 Butte Along Powelton Rd 4.5 mi NE of its jct with the Skyway (near old Powelton site). 1097 Comment
  UC1012174  Mimulus nasutus F. W. Pennell and A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  JEPS88226  Mimulus pilosus Vernon H. Oswald and Lowell Ahart 1996-6-10 7741 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, at the N end of the Riparian Sanctuary 28 Comment
  UC886324  Mimulus primuloides A. A. Heller 1914-6-22 11497 Butte Chico Meadows 1219 Comment
  JEPS14949  Mimulus torreyi D. Cleveland 1882-7-14 Butte Sutton House Comment
  RSA21489  Mimulus tricolor Carl B. Wolf 1937-5-14 8671 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  RSA717286  Mimulus tricolor L. Ahart 2005-5-28 11825 Butte 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
  CAS-BOT-BC174595  Minuartia californica H. E. Brown 1897-3-3 143 Butte Near Clear Creek 53 Comment
  HSC43125  Minuartia californica Maralyn O'Meara 1974-4-20 278 Butte Along Pentz Rd. 300 yds. S of the intersection with Clark Rd. 76 Comment
  CHSC38296  Minuartia douglasii Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. On a basaltic cap overlooking Chico Creek. 198 Comment
  CHSC43378  Minuartia douglasii Lowell Ahart 1978-4-17 1646 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 Comment
  CHSC75488  Minuartia douglasii G. F. Hrusa; T. D. Wilfred 1997-5-7 13721 Butte Sierra Nevada. Serpentine outcrop on SSE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  POM161689  Mitella pentandra E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC43938  Modiola caroliniana Vernon Oswald 1988-4-5 3268 Butte Chico Tree Improvement Center (former USDA Plant Introduction Station) located in southeast Chico. In the southeast corner of the greenhouse complex. 70 Comment
  CHSC31521  Mollugo verticillata L. Ahart 1972-5-8 98 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC52180  Mollugo verticillata Pauleen Broyles 1987-5-21 1048 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. Scattered along banks of Singer/Pine Creek. 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
  UC204576  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte land 8 mi n of Oroville Comment
  UCD99639  Mollugo verticillata John Thomas Howell 1959-9-20 34635 Butte eastern outskirts of Oroville. 60 Comment
  PASA603  Mollugo verticillata Frank W. Peirson 1926-6-20 Butte Banks of Sacramento River, 5 miles west of Chico Comment
  CHSC39334  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Along Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC60608  Monardella breweri subsp. lanceolata L. P. Janeway 1992-6-13 4232 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. 487 Comment
  CHSC94485  Monardella odoratissima subsp. glauca Lowell Ahart 2006-7-16 12960 Butte Near the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC58926  Monardella odoratissima subsp. pallida Lowell Ahart 1992-7-29 6869 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  SD6867  Monardella odoratissima subsp. pallida Daniel Cleveland 1882-7-14 Butte Comment
  CHSC52048  Monardella sheltonii L. P. Janeway 1988-6-29 2908 Butte Along the road to The Lime Saddle, 0.2 mi from the Pentz- Magalia Hwy. 320 Comment
  CHSC52213  Monardella sheltonii L. P. Janeway 1988-6-25 2888 Butte Near Paradise; Wayland Rd (Foster Rd) 1.1 mi E of Neal Rd. 381 Comment
  CHSC67981  Monardella sheltonii James D. Jokerst 1989-7-3 3124 Butte Hwy. 70 and Pulga Rd. Comment
  CHSC67984  Monardella sheltonii James D. Jokerst 1992-5-19 3357 Butte Cascade Range Foothills. Stone Ridge Ranch Devolopment Site E of Cohasset Rd. at Chico Municipal. North-facing cliff S of intermittent drainage in Sheep Hollow. 76 Comment
  JEPS120836  Monardella sheltonii Lowell Ahart 2013-7-1 18819 Butte About 30 yards SW of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  POM280231  Montia clara Lyman Benson 1935-3-27 6370 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC33108  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  UC203629  Montia fontana A. A. Heller 1914-3-18 11209 Butte 8 mi n of Oroville Comment
  JEPS116040  Montia fontana subsp. amporitana Lowell Ahart, John Dittes 2009-3-20 15513 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chic 407 Comment
  JEPS119846  Montia fontana subsp. amporitana Lowell Ahart 2012-3-23 17792 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC38632  Montia fontana subsp. chondrosperma Vernon Oswald 1983-3-13 164 .5 Butte Upper Bidwell Park, Chico, ca. 400 ft s and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC97378  Montia fontana subsp. chondrosperma Paul Maslin 2006-3-17 38 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 1061036E 4412565N. Comment
  CAS-BOT-BC445037  Montia linearis Lowell Ahart 1983-6-30 4183 Butte On the east side of the West Branch of the Feather River, about 5 miles east of Stirling City 1150 Comment
  CHSC57197  Montia parvifolia L. P. Janeway 1988-5-14 2767 Butte Steep bank along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. 922 Comment
  POM101998  Montia parvifolia C. C. Bruce 1898-05 1777 Butte [Unspecified] Comment
  JEPS119542  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte East of the Deer Pen, south of Table 11, Lower Bidwell Park, Chico. Comment
  JEPS122161  Muhlenbergia andina Lowell Ahart 2014-8-13 19702 Butte About 80 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC260538  Muhlenbergia filiformis A. A. Heller 1917-7-28 12833 Butte Butte Meadows 1280 Comment
  JEPS122029  Muhlenbergia filiformis Lowell Ahart 2014-7-2 19549 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  LA9645  Muhlenbergia filiformis E. B. Copeland; 1929-7-16 339 Butte Jonesville 1550.0 Comment
  JEPS121900  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  RSA585085  Muhlenbergia minutissima H. F. Copeland 1930-7-29 1347 Butte Neighborhood of Jonesville 1829 Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC29372  Myosotis discolor R. A. Schlising; R. Banchero 1980-6-6 3655 Butte N of L. Oroville, on Bald Rock Road, 1.5 mi s of jct with Oroville-Quincy Highway in Brush Creek. 944 Comment
  UC1586627  Myosurus minimus subsp. apus Lowell Ahart 1991-5-20 6656 Butte 10 mi sw Gridley (1/4 mi w of Pennington Road,, on n side of Rutherford road, Gray Lodge Waterfowl Management Area) 19 Comment
  SEINET10536217  Myosurus minimus subsp. apus Mary Susan Taylor 1980-3-28 Taylor 2401 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  RSA0025076  Myriophyllum aquaticum L. P. Janeway, B. Castro, Laurie Archambault 2006-1-16 8554 Butte Sacramento Valley. Gray Lodge Wildlife Area; in shallow sluggish canal between the main waterfowl viewing parking area and the headquarters area. 18 Comment
  CHSC20528  Myrtus communis Pamela Caldwell 1971-11-7 Butte CSUC campus. So-wil-len-no Rd. Behind amphitheatre. Comment
  CHSC24489  Nama lobbii M. S. Taylor 1976-6-28 1165 Butte Ca. 4 mi se of Jonesville on Scotts John Creek Rd, ca. 2 ft n of rd. 1828 Comment
  CHSC46197  Nama lobbii L. P. Janeway 1988-6-25 2857 Butte Along the Skyway w.4 mi N of Inskip; ridge top near Bottle Hill. 1554 Comment
  UC1069123  Nama lobbii P. L. Johannsen 1936-7-16 918 Butte 1 3/4 mi ese Butte Mdws (Lassen National Forest); , Paynes Creek Quad. Comment
  UC21150  Nama lobbii P. L. Johannsen 1936-7-21 952 Butte 1/2 mi e Chaparral House; Paynes Creek Quad., Lassen National Forest Comment
  CHSC27863  Nassella cernua A. K. Bos 1978-4-24 20 Butte Ca. 10 ft s of Rd, 2.6 mi e on Humbug Rd, 6.6 mi se from Chico. Comment
  CHSC43007  Navarretia E. Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  CHSC35114  Navarretia capillaris R. A. Schlising 1980-7-16 3912 Butte N part of county NE of Butte Meadows and SW of Jonesville; meadow and streamside of Butte Creek near Cherry Hill Campground. Comment
  JEPS121907  Navarretia capillaris Lowell Ahart 2014-7-16 19681 Butte About 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC426936  Navarretia divaricata E. B. Copeland 1930-7-17 443 Butte Jonesville 1550 Comment
  CHSC97038  Navarretia divaricata subsp. vividior B. Castro; Plumas NF/Feather River RD botanists 2005-6-6 1483 Butte On SW end of Lumpkin Ridge, ca 6 3/4 air mi NE of town of Feather Falls and 1.3 mi E of the 'Camp 18' site on topo maps. Ca 300 ft SE of USFS Rd 22N27 (Lumpkin Rd). ca 2 mi E of its jcn with the County Rd and USFS Rd 22N94 to Fall River. 1295 Comment
  CHSC102842  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC91460  Navarretia filicaulis Lowell Ahart 2005-7-12 12140 Butte Poor road on the south side of Forest Road 21N40, about 100 yards west of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) west of Bloomer Hill, about 6 miles west of Oroville Quincy Highway. 822 Comment
  UC101993  Navarretia filicaulis Mrs. C. C. Bruce Jun 1887 1137 Butte Forest Ranch Comment
  CHSC38600  Navarretia heterandra Vernon Oswald 1983-5-22 531 Butte Upper Bidwell Park, Chico, along the n side of Horseshoe Lake. 100 Comment
  UCD37443  Navarretia heterandra Beecher Crampton 1960-6-15 5623 Butte Butte County, 10 miles southeast of central Chico. Comment
  CHSC39340  Navarretia intertexta Lowell Ahart 1983-6-26 4140 Butte Along the East Fork of Canyon Creek, along Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC94249  Navarretia intertexta subsp. intertexta Lowell Ahart 2006-7-16 13003 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1524 Comment
  CHSC4468  Navarretia leucocephala C. Glascock 1965-3-23 337 Butte Ca. 0.5 mi. S from US99E on Broyles Rd (ca. 10 mi. NW of Chico). At W roadside. Comment
  POM74522  Navarretia leucocephala subsp. leucocephala Edward Palmer 1892-6-7 2081 Butte Near Chico. Comment
  UC1330011  Navarretia nigelliformis subsp. radians Beecher Crampton 1966-6-27 7768 Butte ca 13 mi nw centralChico (U.S. Hwy 99 E; Elwin Roney ranch) Comment
  CHSC26826  Navarretia pubescens M. S. Taylor 1978-5-7 1593 Butte In vernal pools on e side of Williams Rd, on Butte College campus, ca. 1/2 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC44417  Navarretia pubescens Lowell Ahart 1988-6-9 6036 Butte On the Joie Osgood Ranch, about 1/10 mile west of Dunstone Drive, about 1 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC172847  Navarretia pubescens A. A. Heller 1913-5-25 10757 Butte near Pents 152 Comment
  CAS-BOT-BC232628  Navarretia pubescens Clare B. Hardham 1975-6-7 20432 Butte Cherokee Comment
  CDA40108  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  JEPS107884  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CAS-BOT-BC219364  Nemophila John Thomas Howell 1976-4-1 51524 Butte Table Mountain, 4 to 5 miles north of Oroville 152 Comment
  CHSC84917  Nemophila heterophylla W. Dobson 1980-5-25 21 Butte Ca. in Wagner Valley. 542 Comment
  CHSC90237  Nemophila heterophylla Thomas M. Scott 1989-4-19 11 Butte Ca. .2 km e of Covered Bridge (over Butte Creek), 10.2 km ese of Chico. 120 Comment
  UC126923  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte near Oroville (in the foothills of the Sierra Nevada); foothills Sierra Nevada, nar Oroville 150 Comment
  CHSC28965  Nemophila pedunculata J. D. Jokerst; M. S. Taylor 1980-2-23 449 Butte Edge of flat ridge top ca 1/4 mi NW of Neal Rd. 198 Comment
  SBBG128278  Nemophila pedunculata L. Ahart, J. Dittes 2009-3-20 15499 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  SEINET10497064  Nemophila spatulata Mary Susan Taylor 1978-6-24 Taylor 1660 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CHSC116131  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte On the bottom and on the west side of Dark Canyon, west of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 224 Comment
  JEPS87441  Nicotiana acuminata var. multiflora Lowell Ahart 1993-7-22 7069 Butte about 5 air mi ne Feather River Falls (at Camp 18) 1219 Comment
  UC1562311  Nothocalais alpestris Vernon Oswald and Lowell Ahart 1990-7-19 4377 Butte ca 3 mi e Philbrook Reservoir (ca 0.1 mi w of the Plumas County Line); s side of Philbrook Creek Comment
  UC600689  Nuphar lutea subsp. polysepala H. F. Copeland Butte Jonesville 1828 Comment
  CHSC90657  Nuttallanthus canadensis Samatha Mackey Hillaire; Charles Hooks 2005-4-9 1213 Butte North Table Mountain Plateau. Shore of AL Chaffin Reservoir, SE side. 298 Comment
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Jan 18 2011
  CHSC84113  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 48 Comment
  POM197244  Odontostomum hartwegii H. F. Copeland 1929-5-4 1130 Butte Canyon of Chico Creek. Comment
  SEINET10905074  Odontostomum hartwegii Mary Susan Taylor 1986-5-6 Taylor 5625 Butte Butte County; Upper Bidwell Park, Chico, in open Valley Grassland between Horseshoe Lake and Omicron Enclosure. With Vern Oswald and Lowell Ahart. 200 ft. 229 Comment
  CHSC108854  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  JEPS119512  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  POM355266  Oenothera M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC38559  Olea europaea Vernon Oswald 1983-5-27 569 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  SEINET10484013  Onobrychis viciifolia Mary Susan Taylor 1982-6-24 Taylor 4730 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 3600 ft. 1097 Comment
  CAS-BOT-BC349985  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC96316  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. 1695 Comment
  CHSC87568  Orobanche fasciculata R. D. Fischer 2004-4-20 141 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along southern end of Humboldt Trail, at edge of trail. 396 Comment
  RSA0076586  Orobanche fasciculata Lonnie Bookbinder 1967-4-15 7 Butte Southeast of Paradise. 914 Comment
  SEINET10549646  Orthocarpus attenuatus Mary Susan Taylor 1976-3-9 Taylor 1024 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  SEINET6225233  Orthocarpus attenuatus L. S. Rose 1967-1 67055 Butte Oroville Comment
  SEINET12328344  Orthocarpus campestris Unknown 1984-1 4585 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut, ca 12 mi S of Oroville 50 Comment
  POM286324  Orthocarpus erianthus Lyman D. Benson 1935-3-27 6366 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  RSA727539  Orthocarpus lacerus 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
  CHSC54296  Osmorhiza brachypoda Vernon H. Oswald; Lowell Ahart 1991-6-5 4651 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 762 Comment
  SEINET10454517  Osmorhiza chilensis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4697 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC334337  Packera eurycephala var. eurycephala Lowell Ahart 1985-6-30 5089 Butte 100 yards S of the road to the Forbestown Res., S of the Forbestown Ditch, about 2.5 miles NE of Forbestown 883 Comment
  CAS-BOT-BC316893  Packera eurycephala var. lewisrosei John Thomas Howell 1955-6-15 30507 Butte West branch of North Fork of Feather river 182 Comment
  LA203913  Packera subnuda var. subnuda E. B. Copeland; 1930-6-27 sn Butte Jonesville 1550.0 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
  CHSC51293  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 228 Comment
  SEINET7293845 Image available Panicum rigidulum subsp. rigidulum John Thomas Howell 1961-1 36714 Butte Bank of Feather River, Oroville 53 Comment
  CHSC116722  Parentucellia viscosa Lowell Ahart 2016-5-24 20873 Butte Flood plain, on the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CAS-BOT-BC181181  Paronychia ahartii J. D. Jokerst 1986-6-18 2744 Butte Unsurveyed portion county on the Richardson Spring 7.5 minute USGS topographic map the site is 145 mm from bottom edge of map, not including border, 181mm from left edge. 45 Comment
  UCD88690  Paspalum boscianum Elizabeth Wilson 1934-8-9 s.n. Butte Biggs Rice Station. Comment
  CDA2128  Paspalum dilatatum A. A. Beetle 1941-6-27 2894 Butte 4 miles north of Gridley. 0 Comment
  SEINET10509032  Paspalum distichum Mary Susan Taylor 1975-10-3 Taylor 928 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  SEINET10508285  Paspalum urvillei Mary Susan Taylor 1975-10-4 Taylor 952 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC3008  Paulownia tomentosa Carl Pejsa 1958-4-19 88 Butte Bidwell Park Forestry Station. Comment
  CHSC39613  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte Found on the east bank of Woodleaf Creek, above the road, about 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown. 450 Comment
  SEINET10939921  Paxistima myrsinites Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5224 Butte T21N R6E se sec 30. Big Bald Rock, ca. 3 mi s of Brush Creek, ne of Oroville. 3200 ft. 975 Comment
  CHSC28139  Pectocarya pusilla Robert A. Schlising 1979-4-4 3352 Butte Northeast of Chico, along Skyway (hwy to Paradise). 243 Comment
  CHSC86595  Pectocarya pusilla L. P. Janeway 2003-5-7 7772 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 360 Comment
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  UC478469  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville 1550 Comment
  CAS-BOT-BC71202  Pellaea andromedifolia Dr. E. B. Copeland 1902-12-29 2750 Butte Chico Canyon Comment
  SEINET10529800  Pellaea mucronata Mary Susan Taylor 1980-7-20 Taylor 3193 Butte Big Bald Rock, ca. 3 mi E of Lake Mad rone, NE of Oroville. With L. Ahart, R. Schlising & J. Jokerst. 998 Comment
  CHSC101337  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 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
  UC382581  Pellaea mucronata var. mucronata Mrs. Carlotta C. Hall 1912-5-27 Butte canyon near Richardson's Springs Chico Comment
  SBBG66459  Penstemon azureus A. A. Heller 1926-4-21 13926 Butte Rock Crk, 7 mi N of Chico Comment
  POM194868  Penstemon azureus subsp. angustissimus D. D. Keck 1928-6-16 451 Butte 1.5 miles south of Berry Creek Inn. 610 Comment
  CHSC92734  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  UC436310  Penstemon deustus var. deustus E. B. Copeland 1930-7-7 Butte Jonesville Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC62506  Penstemon heterophyllus var. purdyi B. Castro 1987-5-18 104 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E of Altatina Drive. 445 Comment
  NY601733  Penstemon heterophyllus var. purdyi L. Ahart 1980-6-19 2391 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  NY604463  Penstemon laetus var. laetus L. Ahart 1987-5-22 5672 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1.5 miles east of Camp 18, about 8 miles northeast of Feather Falls 1280.2 Comment
  NY627284  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  CHSC29402  Penstemon newberryi R. A. Schlising 1980-6-10 3672 Butte Along Humboldt Road, 1.9 mi ne of jct with Hwy32 at Loma in n part of county. 1356 Comment
  SEINET10548068  Penstemon newberryi Mary Susan Taylor 1980-8-2 Taylor 3217 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  UC463015  Penstemon newberryi var. newberryi E. B. Copeland 1931-6-19 Butte Big Summit , Big Summit (Jonesville) 2100 Comment
  CHSC115451  Pentagramma pallida M. Sutton; C. Yasuda 2013-3-10 13 Butte Feather Falls Trail. 1069 Comment
  SBBG47401  Pentagramma pallida J. T. Howell 1962-6-16 37618 Butte Nelson Bar 213 Comment
  CHSC29214  Pentagramma triangularis Carl E. Yingst 1980-4-23 13 Butte Ca 20 km ne of Chico, 1.6 km sw of Highway 32. 454 Comment
  CHSC28409  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-9-28 2201 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC1972  Perideridia bolanderi subsp. involucrata M. Underhill 1952-7-2 Butte 243 Comment
  UC1312887  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
  CHSC102818  Perideridia kelloggii Lowell Ahart 2009-6-30 15972 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC88068  Perideridia kelloggii R. D. Fischer 2004-6-6 154 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located off 10 Mile House Road at the Big Chico Creek fording point, e. side of the connecting tr. from the end of the w. side Upper Park rd. 213 Comment
  SEINET12121858  Perideridia oregana Unknown 1985-1 5061 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yards S of dirt road 975 Comment
  CHSC33972  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-15 4186 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC40239  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 a Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd at the W. Branch of the Feather R. 1615 Comment
  CAS-BOT-BC413705  Persicaria hydropiper Lowell Ahart 1982-10-11 3864 Butte About 1/10 mile west of the Gray Lodge Headquarters, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  JEPS120035  Persicaria lapathifolia Lowell Ahart 2011-10-29 17725 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  JEPS120613  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  CHSC26647  Persicaria maculosa M. S. Taylor 1977-11-10 1513 Butte In dry irrigation ditch on s side of Crauch Rd, ca. 300 ft w of its jct with Lone Pine Ave., ca. 4 mi s of Chico. 30 Comment
  CAS-BOT-BC419318  Persicaria punctata Lowell Ahart 1987-5-27 5716 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC26675  Persicaria punctata M. S. Taylor; M. Hayes 1977-8-16 1450 Butte Abundant in Clear Creek on Butte College Camputs, ca. 15 mi s of Chico. 60 Comment
  CHSC37379  Persicaria punctata R. A. Schlising 1980-8-3 3965 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
  SBBG128610  Persicaria punctata L. Ahart 2012-9-28 18466 Butte middle of Big Chico Crk, ca. 30 yards W of the Freeway, Lower Bidwell Park, Chico 65 Comment
  CHSC44386  Petrorhagia dubia Lowell Ahart 1988-5-30 6026 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC38463  Phacelia cicutaria Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, on the edge of the canyon rim overlooking Chico Creek ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. 198 Comment
  UC1047037  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 343 Butte along Feather River Hwy about 0.5 mi below Las Plumas road junction (about 14 mi ne of Oroville) Comment
  UC1602038  Phacelia heterophylla subsp. virgata P. L. Johannsen 1936-7-17 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  UC1046983  Phacelia imbricata Butte just below Los Plumas road junction with the Feather River Highway, about 14 miles northeast of Oroville Comment
  UC909976  Phacelia mutabilis A. A. Heller 1917-7-26 12831 Butte Butte Meadows 1402 Comment
  CHSC46565  Phacelia procera V. Oswald; L. Ahart 1989-7-12 3851 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1926 Comment
  CHSC38467  Phacelia tanacetifolia Vernon Oswald 1983-3-14 181 .5 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CHSC48476  Phacelia tanacetifolia Vernon Oswald 1985-4-15 1710 Butte Upper Bidwell Park, Chico, on the north rim ca. 1 mi e of the power lines. 320 Comment
  CHSC6661  Phalaris caroliniana Marilyn Lee 1968-4-19 141 Butte Table Mt., ca 3/7 mile W. of Cherokee Road. Comment
  CHSC49566  Phleum pratense Vernon Oswald 1983-6-22 750 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. In a meadow near a stream. 1264 Comment
  UCD118254  Phlox speciosa W. R. Powell 1968-5-17 1510 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  CAS-BOT-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  CAS-BOT-BC135097  Phoradendron juniperinum Flower Shaw 1928-4-1 s.n. Butte Cherokee School Comment
  SEINET10492842  Phoradendron juniperinum subsp. libocedri Lowell Ahart, Peter Ahart 1985-9-15 Ahart 5169 Butte On dry lava cap, about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. Comment
  CHSC30387  Phoradendron villosum J. D. Jokerst 1979-2-23 1133 Butte Top of North Table Mt., N of Cherokee Rd. On lone Quercus douglasii in open grasslands. 381 Comment
  CHSC84271  Phoradendron villosum Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Iahi Trail, about 200 yards east of Parking Area O, Upper Bidwell Park, about 4 1/2 miles east of Manzanita Avenue, Chico. 182 Comment
  JEPS120060  Photinia Lowell Ahart 2012-4-9 17824 Butte On the north side of South Rim Trail, about 30 yards east of Big Chico Creek, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. Comment
  CHSC49448  Phyla nodiflora var. nodiflora Vernon Oswald 1987-7-30 3172 Butte Rancho Arroyo Chico. Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  CHSC93064  Phyla nodiflora var. nodiflora Linnea Hanson; Boy Scout troop 1996-7-1 Butte Pine Creek Landing, off River Rd before Scotty's. Gravel bar on E shore of Pine Ck, just N of its confluence with the Sacramento River. 39 Comment
  CHSC59523  Phyllostachys bambusoides Bryan C. Willingham 1968-6-3 Butte Purchased in Nagasaki, Japan. Introduced to the Chico (California) Plant Introduction Station. Comment
  CHSC83053  Physalis lancifolia Lowell Ahart 2002-10-17 9996 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC64003  Physocarpus capitatus B. Castro 1987-9-12 218 Butte At N edge of Butte Ck ca 1.1 mi S of the Ponderosa Way bridge, ca 1 mi S on the Butte Creek Trail, at base of rock slide. 585 Comment
  RSA592544  Physocarpus capitatus S. O. Mattoon 1970-6-12 16 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  POM90682  Physocarpus capitatus C. C. Bruce 1898-05 1812 Butte Butte Creek. Comment
  JEPS117523  Phytolacca americana Lowell Ahart 2010-9-24 17241 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  CHSC32124  Pickeringia montana L. Ahart 1979-5-29 1909 Butte Along edge of dirt rd ca. 0.5 mi e of Kunkle Creek, 2.5 mi ne of Paradise. 500 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC31532  Pilularia americana L. Ahart 1973-4-15 197 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC32152  Pilularia americana L. Ahart 1978-5-2 1712 Butte On top of Table Mt, e of parking area. Near Oroville. 400 Comment
  CHSC43857  Pilularia americana Vernon Oswald 1988-3-14 3256 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC3240  Pinus contorta subsp. murrayana Virginia Hagaman 1966-3-12 58 Butte Lower Bidwell Park about 2 miles east of entrance. Comment
  NY61630  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  NY61631  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  UCD134797  Pinus monticola E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC79018  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  CHSC88624  Pinus ponderosa H. Gray 2003-1-17 Butte Plumas National Forest. Zink Road. 792 Comment
  SD28280  Pinus sabiniana M. V. Hood 1940-8-7 Butte Mount Chico 760 Comment
  CDA13729  Piperia leptopetala G. F. Hrusa, T. D. Wilfred 1997-6-27 13907 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CDA13733  Piperia transversa G. F. Hrusa, T. D. Wilfred 1997-6-27 13911 Butte Sierra Nevada; Feather Falls/Cascade Rd. Comment
  CHSC51945  Piperia unalascensis L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3080 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  CAS-BOT-BC254382  Piptatherum micranthum Lowell Ahart 1984-6-10 4690 Butte Along the edge of a new subdivision road about 1 mile SE of Hurleton, 1/12 mile E of the Oak Grove Cemetary, about 10 miles E of Oroville 500 Comment
  SEINET10529833  Pityrogramma triangularis Mary Susan Taylor 1980-7-6 Taylor 3079 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC28994  Plagiobothrys austiniae J. D. Jokerst 1980-3-12 474 Butte NE of Chico. Comment
  CHSC46778  Plagiobothrys glyptocarpus Lowell Ahart 1984-5-7 4590 Butte Near Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  SEINET10497372  Plagiobothrys glyptocarpus Mary Susan Taylor 1975-4-26 Taylor 515 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC117346  Plagiobothrys glyptocarpus var. glyptocarpus B. Castro; L. P. Janeway 2014-4-4 2003 Butte Northern Sierra Nevada Foothills. On North Table Mountain, ca 5.5 air mi N of Oroville, 100 ft N of the main parking area just W of Cherokee Rd on the table top; ca 200 ft NE of the large lone oak tree by the parking lot. 406 Comment
  JEPS103363  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 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
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  CHSC33133  Plagiobothrys leptocladus J. D. Jokerst 1980-5-1 693 Butte Ahart Ranch ca 1/2 mi N of the ranchhouse, S edge of Butte County. Comment
  CHSC39213  Plagiobothrys nothofulvus M. S. Taylor; K. Tarp 1983-3-12 5239 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC40764  Plagiobothrys nothofulvus Ahart; Jokerst 1985-5-10 4955 Butte 10 yards north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UCR187084  Plagiobothrys nothofulvus Anna M. Hurlbutt, C. R. Weeks 2007-4-26 008 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  SEINET10497555  Plagiobothrys nothofulvus Lowell Ahart 1985-5-10 Ahart 4955 Butte North of east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC46766  Plagiobothrys scriptus Lowell Ahart 1977-4-9 1276 Butte Along the edges of a small swale, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC31552  Plagiobothrys shastensis L. Ahart 1977-4-15 1294 Butte Peter Ahart Ranch, Honcut. In pasture fields. 50 Comment
  CHSC35068  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4018 Butte W of Oroville and SW of Thermalito, at S border of Oroville Municipal Airport; off Larkin Road, 1.2 mi S of jct with Hwy 162. Comment
  CHSC84126  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Road Boat Ramp, on the north side of the access road to the boat ramp at the Thermalito Afterbay, about 300 yards west of Larkin road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 38 Comment
  UC718179  Plagiobothrys stipitatus Carl B. Wolf 1937-5-14 Butte 5 mi nw Chico (Hamilton City Road); Sacramento Valley 45 Comment
  CHSC116696  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-17 20840 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
  CHSC39626  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-5-12 3972 Butte Found along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 65 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
  CHSC84013  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-6-23 10309 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS104318  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2003-5-28 10229 Butte Center of a vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  RSA768983  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte 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 air miles northeast of Chico 396 Comment
  UC1609328  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1993-5-17 6946 Butte ca. 12 mi. s.e. Oroville (ca. 1.5 mi. n. and 3 mi. e. of Honcut, on w. side of Dunstone Rd.) 60 Comment
  CHSC29276  Plagiobothrys tenellus R. A. Schlising 1980-4-7 3557 Butte 2.8 mi E of Bangor Highway, on Swedes Flat Road. 365 Comment
  SEINET12318338  Plantago coronopus D. M. Burk 1978-1 117 Butte 50 ft S of intersection of Broyles Rd & Hwy 99, ca 11 mi N of Chico 59 Comment
  CHSC47459  Plantago elongata Lowell Ahart 1974-4-24 426 Butte Growing on the bottom of small vernal pools, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC62364  Plantago elongata B. Castro 1990-3-31 418 Butte Ca 4 mi SW of Paradise, S of Neal Rd ca 0.1 mi SE of Elliot Spring House. 297 Comment
  CDA42161  Plantago elongata L. Ahart 2004-4-14 10741 Butte In the road gutter and on the lower edge of the south side of Lower Honcut Road, about 100 yards west of Wyandotte Creek, about 1/8 mile west of the Railroad, about 1 3/4 miles west of Honcut. 0 Comment
  UCD73333  Plantago erecta Chuck Hughes 2008-3-26 24 Butte North Table Mountain. 396 Comment
  UCD124474  Plantago erecta Peter H. Raven 1963-5-8 18365 Butte 5 miles south of Cherokee. Comment
  SEINET12319542  Plantago hookeriana Unknown 1980-1 12 Butte Chico, 50 ft N of Skyway, Sec 31 N of SE 37 Comment
  CHSC115413  Plantago lanceolata M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CHSC88176  Plantago major Lowell Ahart 2004-7-23 11302 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  SEINET13711423  Plantago major Lowell William Ahart, Lowell William Ahart 1999-1 8173 Butte 12 Air Mi SW of Chico, 2 Air Mi SE of Ordbend, Sacramento River Comment
  UC429341  Platanthera Mrs. R. M. Austin 1896-7-1 6 Butte Butte Creek Comment
  SEINET10470060  Platanthera dilatata var. leucostachys Mary Susan Taylor 1980-1 Butte Comment
  CHSC41261  Platanthera leucostachys S. C. Morey 1983-7-21 479 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC39948  Platanus racemosa Lowell Ahart 1984-4-3 4535 Butte Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. 50 Comment
  CHSC51073  Platanus racemosa Pauleen Broyles 1988-2-25 1098 Butte The Nature Conservancy Vina Plains Preserve. On e. side of Singer Creek in n.e. portion of Wurlitzer Addition. Comment
  CHSC35652  Platystemon californicus R. E. Preston 1982-4-7 236 Butte Ca. 10 ft above high water mark, w branch Feather River arm of Lake Oroville, ca. 1 mi. n of Nelson Bar launch ramp, ca 4 mi sw of Paradise. 304 Comment
  CHSC10701  Plectritis ciliosa Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  SEINET10449168  Pleuricospora fimbriolata Mary Susan Taylor 1980-8-2 Taylor 3210 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  JEPS104015  Poa annua Lowell Ahart 2003-3-31 10031 Butte Rice field, ca 50 yd e of the drain ditch, ca 20 yd n of Hamilton Rd, ca 3/8 mi e of Riceton Highway, ca 10 mi sw of Oroville. 29 Comment
  RSA726780  Poa annua L. Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 35 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
  CHSC111387  Poa bulbosa Lowell Ahart 2012-5-2 17979 Butte On the south side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC42452  Poa bulbosa Lowell Ahart 1987-5-27 5718 Butte At the intersection of Big Bend Road and Dark Canyon Road, about 1 mile south of Jarbo Gap. 640 Comment
  CHSC9281  Poa bulbosa D. C. Burns 1971-4-3 115 Butte On n side of Cohasset rd., ca. .5 mi e of the intersection of Cohasset rd. and Vilas rd. 365 Comment
  JEPS116023  Poa compressa Lowell Ahart 2009-7-9 16022 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 203 Comment
  CDA32005  Poa palustris L. Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC64262  Poa pratensis S. C. Morey 1983-8-1 652 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10659754  Poa pratensis Moyer 1972-4-16 MOYER 189 Butte S bank Chico Crk., between Warner St and New Dorm Bridge 61 Comment
  SD112  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at the summit on a steep gravelly north slope which in most years remains covered with snow 609 Comment
  CHSC59850  Poa secunda subsp. secunda R. E. Preston 1982-3-6 187 Butte At boundary of Upper Bidwell Park, n of Horseshoe Lake, Chico. 188 Comment
  SEINET5850115  Polanisia dodecandra var. trachysperma R. R. Halse 2006-8-2 6980 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC23869  Polycarpon tetraphyllum Lowell Ahart 1976-7-27 1147 Butte North Honcut Creek below the Peter Ahart Ranch. 45 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
  SEINET10493887  Polygala cornuta Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4095 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CDA2832  Polygonum arenastrum L. Ahart 1998-7-1 8035 Butte Along the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC113440  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC46193  Polygonum aviculare L. P. Janeway; C. A. Janeway 1986-10-5 1911 Butte Along Pine Creek at Cana Hwy. Gravel bar along the creek. 48 Comment
  JEPS94731  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte about 7 air mi n Oroville (along the fence, e of cow chute and on e side of Cherokee Road); North Table Mountain 403 Comment
  CAS-BOT-BC414195  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  CAS-BOT-BC109135  Polygonum bidwelliae Lowell Ahart 1980-5-11 2239 Butte 0.5 mile southwest of Kunkle Res. 500 Comment
  CHSC59121  Polygonum bidwelliae L. P. Janeway; B. Castro 1992-5-16 4186 Butte Unnamed canyon on southeast side of Neal Road opposite the entrance to the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. Bottom of slope on west side of dry creek. 68 Comment
  CHSC88076  Polygonum bidwelliae R. D. Fischer 2004-6-12 161 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on ridge above Humboldt Trail and just w. of Hwy 32. 399 Comment
  CHSC97344  Polygonum bidwelliae Paul Maslin 2005-5-1 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  UC570215  Polygonum bidwelliae J. E. Sowder 1933-6-2 79 Butte about 3 mi n Clear Creek; Chico Quadrangle 274 Comment
  CAS-BOT-BC414363  Polygonum californicum John Thomas Howell 1962-6-16 37589 Butte 3.5 mi. n. of Pentz 396 Comment
  CAS-BOT-BC414416  Polygonum douglasii H. F. Copeland 1920-7-24 18 Butte Meadow by Colby Creek 1828 Comment
  POM219174  Polygonum douglasii H. F. Copeland 1928-8-18 318 Butte Jonesville, Butte Creek Canyon 1524 Comment
  UC203866  Polygonum douglasii subsp. douglasii A. A. Heller 1914-7-23 11603 Butte woods about Chico Meadows 1219 Comment
  UC600491  Polygonum douglasii subsp. spergulariiforme H. F. Copeland 1920-7 Butte Jonesville Comment
  CDA14466  Polygonum lapathifolium G. D. Barbe 1988-8-24 4307 Butte Lundberg Brothers' near Richvale. 0 Comment
  CHSC33762  Polygonum parryi R. A. Schlising; R. Banchero 1980-6-17 3727 Butte N of Magalia and De Sabla, along Skyway, ca 1.5 mi SW of jct with Coutelenc Road at Lovelock. 780 Comment
  CHSC46011  Polygonum parryi Lowell Ahart 1984-7-19 4730 Butte Along the edge of the dirt road where there is a seep along the road gutter, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles northeast of Stirling City. 1371 Comment
  SEINET11934432  Polygonum parryi L. Ahart, Ahart, P. 1984-1 4730 Butte About 1.5 mi SE of Bald Mountain, 3/4 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC27968  Polygonum polygaloides subsp. kelloggii M. S. Taylor 1978-7-19 1765 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  SEINET10479686  Polygonum spergulariiforme Mary Susan Taylor 1980-9-19 Taylor 3338 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  SEINET10932889  Polypodium californicum Mary Susan Taylor 1981-3-18 Taylor 3416 A Butte T22N R5E ne sec 6. Pulga SW quad. Both sides of Hwy 70 at Pulga bridge, on serpentine outcrops, ca. 20 air mi ne of Oroville. 1600 ft. 488 Comment
  CHSC103672  Polypodium calirhiza Lowell Ahart 2010-4-30 16592 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC33692  Polypodium calirhiza L. Ahart 1981-3-29 2716 Butte Along or near Ponderosa Way, ca. 1/4 mi s of Ponderosa Dam, near Forbestown. 350 Comment
  CHSC39843  Polypodium calirhiza Maxey-Jones 1928-3-5 Butte Iron Canyon. Comment
  CHSC97158  Polypodium calirhiza Lowell Ahart 2007-5-16 13892 Butte South of Bear Ranch Creek, about 15 feet above the west side of the entrance to the tunnel, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel.1 480 Comment
  CHSC30550  Polypogon interruptus J. D. Jokerst; M. S. Taylor 1980-9-11 635 Butte Adjacent to rice fields, 50 ft N of Goodspeed-Watt Rd, 0.2 mi N of its jct with Nelson Rd (ca 6 mi S of Chico). Comment
  CHSC36518  Polypogon interruptus L. Ahart 1982-5-28 3442 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CAS-BOT-BC233211  Polypogon maritimus Lowell Ahart 1983-10-15 3888 Butte North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  CHSC28464  Polypogon maritimus R. Schlising 1979-5-30 3430 Butte Richvale vernal pools; 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC71270  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte On the bottom and sides of a wash, 20 yards south of a east west fence, at a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC232578  Polypogon monspeliensis A. A. Heller 1902-5-15 5556 Butte Near Biggs Comment
  SEINET10507586  Polypogon monspeliensis Lowell Ahart 1985-5-15 Ahart 4973 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. 503 Comment
  JEPS118208  Polypogon viridis Dean W. Taylor 2004-6-17 19105 Butte Flea Valley (3 air miles NW of Pulga; watershed Flea Valley Creek, tributary North Fork Feather River) 1127 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
  CAS-BOT-BC72266  Polystichum imbricans subsp. curtum L. P. Janeway 1994-9-29 4757 Butte western end of Jackson Ranch Ridge to Fall River, about half-way between Jackson Ranch Ridge and Fall River 929 Comment
  JEPS122334  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CAS-BOT-BC72296  Polystichum imbricans subsp. imbricans John Thomas Howell; Gordon H. True 1967-6-11 42566 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  CHSC6621  Populus M. MacArthur 1968-6-12 303 Butte SE yard of Building U, Chico State College Campus. 60 Comment
  SD5045  Porterella carnosula E. B. Copeland 1929-7-29 Butte Above Jonesville 1750 Comment
  CHSC46093  Portulaca oleracea L. P. Janeway 1988-10-5 3157 Butte City of Chico; campus of Calif. State Univ. Edge of plantings on shady N side of Holt Hall, near Mansion Ave. 59 Comment
  CHSC88252  Potamogeton nodosus Lowell Ahart 2004-7-11 11227 Butte On the northeast shore of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  CAS-BOT-BC454086  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville 1650 Comment
  CHSC46277  Potamogeton pusillus var. pusillus Vernon Oswald 1989-5-19 3779 Butte 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 in an old channel of the Sacramento River. 45 Comment
  CHSC76022  Potamogeton pusillus var. pusillus Lowell Ahart 1999-8-22 8190 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
  CHSC27565  Potentilla glandulosa subsp. glandulosa Robert Schlising 1978-5-17 3257 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  CHSC38645  Potentilla glandulosa subsp. glandulosa Vernon Oswald 1983-5-11 472 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  SD2236  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  CHSC113324  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  CHSC38652  Poterium sanguisorba Vernon Oswald 1983-5-25 550 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd. at Diversion Dam. Along an abandoned road. 134 Comment
  SEINET9798146 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
  HSC46104  Proboscidea louisianica J. P. Smith, J. O. Sawyer 1975-7-1 8152 Butte 5 mi. W of Dayton on the Ord Ferry Rd. Comment
  CHSC31761  Proboscidea lutea L. Ahart 1973-7-19 262 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC43833  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-27 2353 Butte Overlooking Keyser Cr; 5.4 mi N of Ramsey Bar along the Concow Rd. 1554 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
  CHSC48868  Prunus mahaleb Vernon Oswald 1987-3-30 2301 Butte Butte Creek Reserve between Butte Creek and the Durham Mutual Ditch ne of Hwy 99. 68 Comment
  JEPS119633  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  CHSC28728  Prunus subcordata R. A. Schlising 1979-4-13 3360 Butte Cohasset Ridge, about 14 miles NE of Chico. Just off Cohasset Highway. 548 Comment
  SEINET10483131  Prunus virginiana var. demissa Mary Susan Taylor 1976-4-27 Taylor 1085 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  CHSC30416  Pseudobahia heermannii R. Banchero 1980-3-19 51 B Butte Ca. 5.5 mi e of Chico on Skyway. On w edge of plateau. 243 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
  UC1594537  Pseudognaphalium californicum Lowell Ahart 1992-8-2 6910 Butte about 0.5 mi n of Flea Valley (about 4.5 mi (air) ne of Concow Reservoir, e of the intersection) 1158 Comment
  CAS-BOT-BC357549  Pseudognaphalium stramineum Mrs. C. C. Bruce 1897-5-1 2112 Butte Butte Creek Comment
  CHSC60960  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1993-5-10 6933 Butte Peter Ahart Ranch, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC113389  Psilocarphus tenellus Lowell Ahart 2014-7-2 19545 Butte Depression on both sides of the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC46336  Psilocarphus tenellus var. tenellus Lowell Ahart 1989-5-23 6245 Butte Along the edges of Avacado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  UC726637  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte near Forest Ranch Forest Ranch; Sierra foothills Comment
  CHSC103729  Pterostegia drymarioides Lowell Ahart 2010-5-16 16697 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC38621  Pterostegia drymarioides Vernon Oswald 1983-4-9 302 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.4 mi e of the power lines. 350 Comment
  RSA105838  Pterostegia drymarioides R. M. Austin 1883-05 27 Butte Chico Creek Comment
  CHSC12607  Punica granatum S. Posner 1972-9-20 Butte Ca. 20 ft. w of Nord Ave, ca. 1/4 mi n of First St, Chico. Comment
  CHSC54356  Pycnanthemum californicum L. P. Janeway 1989-5-19 Butte Vicinity of Sawmill Peak; along Jordan Hill Road ca 7 3/4 mi n of Concow Road. 944 Comment
  CHSC62549  Pyrola aphylla B. Castro; J. Jurewicz 1993-7-6 466 Butte Ca 2.5 mi SSW of Big Bar Mtn, on the N side of USFS Rd 22N84. 975 Comment
  SBBG28969  Pyrola asarifolia E. B. Copeland 1931-7-1 Butte Jonesville 1500 Comment
  CHSC33403  Pyrola dentata R. E. Preston 1981-7-8 24 Butte Ca. 0.8 km e of Humboldt Peak, ca. 5.5 km nne of Jonesville. 1952 Comment
  UC474256  Pyrola picta H. F. Copeland 1930-8-26 Butte Jonesville, woods above hotel Jonesville Comment
  CHSC27200  Pyrus P. Moyer 1971-2-1 84 Butte CSUC Campus. E face of Bus.-Soc. Sci. Bldg. 60 Comment
  CAS-BOT-BC45810  Quercus H. F. Copeland 1920-7-6 35 Butte near Jonesville 1219 Comment
  CHSC51878  Quercus berberidifolia Mike Pahl 1988-4-19 16 Butte 14.2 mi NE of Chico on Cohasset Hwy and 0.3 mi SSW off the rd. 548 Comment
  UC754055  Quercus berberidifolia H. F. Copeland 1939-7-8 1575 Butte 12 mi e Chico (Humboldt Road) Comment
  CHSC6009  Quercus borealis M. MacArthur 1968-6-18 224 Butte Ca. 300 ft. NW of Big Chico Creek, by EP bld. entrance, Chico State College. 60 Comment
  JEPS117279  Quercus douglasii Lowell Ahart 2010-6-1 16762 Butte On the north side of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico 172 Comment
  SEINET13953256 Image available Quercus dumosa A. A. Heller 1916-1 12650 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  CHSC96585  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less over-looking Little Butte Creek about 600 m north-northwest of upper end of Magalia Reservoir. 759 Comment
  CHSC76054  Quercus garryana var. semota G. F. Hrusa; T. D. Wilfred 1997-5-7 13738 Butte Sierra Nevada. On SE-facing slopes facing Little Butte Creek above Magalia Reservoir, N of Magalia. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 725 Comment
  UCD46647  Quercus kelloggii C. G. Albertus; J. E. Sowder 1935-7-14 114 Butte 1/2 mile west of 14 Mile House. 335 Comment
  CHSC31828  Quercus lobata L. Ahart 1978-3-21 1618 Butte Along edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC90929  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS117323  Quercus lobata Lowell Ahart 2010-6-12 16803 A Butte North side of the pond and table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  CHSC21385  Quercus nigra M. S. Taylor 1975-6-22 785 Butte On s side of Big Chico Creek, ca. 15 ft e of Little Cafeteria, California State University, Chico. Comment
  CHSC100471  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15452 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  POM219180  Quercus vacciniifolia H. F. Copeland 1928-8-14 335 Butte Neighborhood of Jonesville, above Scotch-John Creek. 1829 Comment
  CAS-BOT-BC104690  Quercus wislizeni A. A. Heller 1913-3-2 10689 Butte Hills two miles N of Oroville Comment
  UC143209  Quercus wislizeni Mrs. R. M. Austin Apr 1896 781 Butte near Chico Comment
  JEPS110548  Quercus wislizeni var. wislizeni Lowell Ahart 2006-10-15 13508 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  JEPS122194  Ranunculus aquatilis var. aquatilis Lowell Ahart 2014-4-16 19370 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CAS-BOT-BC379115  Ranunculus aquatilis var. diffusus E. B. Copeland 1929-7-28 360 Butte Jonesville 1500 Comment
  CHSC4663  Ranunculus arvensis R. Carter 1966-4-11 345 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt., 300 yds. W off Feathervale, 15 yds. W off Feathervale, 15 yds. W of house; in orchard. 243 Comment
  UCD80871  Ranunculus arvensis Robert E. Preston 2007-5-3 2473 Butte Chico, Upper Bidwell Park, N of park road, W of power lines. 91 Comment
  JEPS127009  Ranunculus bonariensis var. trisepalus Lowell Ahart 2016-5-24 20866 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  RSA516356  Ranunculus bonariensis var. trisepalus Barbara J. Ertter 1986-4-13 5901 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  CHSC42050  Ranunculus canus Lowell Ahart 1986-4-4 5241 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 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
  CDA34237  Ranunculus hebecarpus L. Ahart 2009-4-22 15592 Butte Along the Guardian s Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC10560  Ranunculus hebecarpus Lowell Ahart 1967-3-30 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC1482  Ranunculus hebecarpus J. Koopman 1929-3-25 Butte Butte Creek canyon. Comment
  CHSC10720  Ranunculus muricatus Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC111374  Ranunculus muricatus Lowell Ahart 2012-5-2 17967 Butte On dark clay soil, on the bottom of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  CDA15363  Ranunculus occidentalis G. F. Hrusa 1997-5-29 13802 Butte Sierra Nevada; Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  UC600474  Ranunculus occidentalis H. F. Copeland 1930-7-25 Butte So. Willow Creek Jonesville 1828 Comment
  RSA32929  Ranunculus occidentalis var. eisenii A. A. Heller 1938-4-23 15054 Butte At the summit on the Feaather River Hwy, 20 miles from Oroville. Comment
  CHSC52691  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 255 Butte S part of county near Bangor Hwy nw of Bangor. 182 Comment
  SEINET177458  Ranunculus occidentalis var. ultramontanus E. B. Copeland 1930-6-26 642 Butte Jonesville 1550 Comment
  CHSC11812  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  JEPS87196  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC43729  Ranunculus uncinatus var. parviflorus Vernon Oswald; M. S. Taylor 1985-5-30 1791 Butte Four Trees Rd. 0.2 mi w of the S. Branch of Mill Creek. Along the road near an intermittent stream. 810 Comment
  CHSC52694  Ranunculus uncinatus var. uncinatus Kirsten Tarp 1983-8-6 334 Butte Near Butte Meadows, on Bull Hill Rd. 0.2 mi from its jct with Humboldt Rd. Near creek. 1325 Comment
  SEINET10841498  Raphanus raphanistrum Mary Susan Taylor 1975-3-25 Taylor 423 Butte Chico. Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  CAS-BOT-BC59888  Rhamnus ilicifolia P. Monnet 1913-3-1 683 Butte Feather River Canyon. Oroville. Comment
  SEINET10969454  Rhamnus ilicifolia Mary Susan Taylor 1980-4-27 Taylor 2574 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC20002  Rhamnus tomentella subsp. tomentella M. S. Taylor 1975-1-16 373 Butte Ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  UC1121072  Rhododendron occidentale C. G. Albertus 1933-7-5 41 Butte 2 mi se of Promontory Point 1066 Comment
  CAS-BOT-BC168129  Rhus aromatica A. A. Heller 1915-3-19 11773 Butte Along Rock Creek 12 miles northeast of Chico 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
  POM86098  Rhus trilobata var. pilosissima C. C. Bruce 1898-03 s.n. Butte Little Chico Creek. Comment
  JEPS98684  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  UC1562393  Rhynchospora capitellata Vernon Oswald and Lowell Ahart 1990-7-31 4424 Butte ca 4 mi n Concow (bordering Concow Road, n side of meadow); Flea Valley 1127 Comment
  SD2127  Ribes inerme E. B. Copeland 1931-5-9 Butte Jonesville. In half-open places. 1500 Comment
  UC478512  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CAS-BOT-BC212670  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  CHSC31399  Ribes roezlii Leslie Steidl 1980-3-15 4 Butte Ca. .6 mi nw of Lumpkin Rd on Island Bar Hill Rd. and 1 ft w of Island Bar Hill Rd., 22 mi ene of Oroville. 731 Comment
  RSA0024708  Ribes roezlii H. F. Copeland 1928-8-18 346 Butte Neighborhood of Jonesville. 1524 Comment
  CAS-BOT-BC198959  Ribes roezlii var. roezlii Lowell Ahart 1988-3-28 5953 Butte About 1/10 mile south of Lumpkin Ride road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1280 Comment
  CAS-BOT-BC362953  Rigiopappus leptocladus John Thomas Howell 1962-6-16 37594 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC33908  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC115427  Robinia pseudoacacia Ariana Gehrig 2013-4-18 Butte City of Chico. Big Chico Creek at Rio Chico Way. 64 Comment
  CHSC99658  Robinia pseudoacacia H. Koeth; K. Schierenbeck 2007-2-27 Butte Upper Bidwell Park (Green Gate), Hwy 32. UTM 10 609663E 4406233N. 454 Comment
  CHSC21145  Rorippa curvisiliqua var. orientalis M. S. Taylor 1975-4-26 533 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC23134  Rorippa nasturtium-aquaticum M. S. Taylor 1975-10-31 983 Butte Ca. 500 yds n of Pentz Rd, in Butte College Campus, by the creek, ca. 12 mi s of Chico. 91 Comment
  CHSC35750  Rorippa nasturtium-aquaticum R. E. Preston 1982-5-19 288 Butte In stream at edge of meadow; ca. 1/4 mi n of Fall River Campground. 1028 Comment
  JEPS103432  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC65584  Rosa bridgesii L. P. Janeway 1995-6-1 4766 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC30739  Rosa gymnocarpa M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  CHSC96887  Rosa gymnocarpa Lowell Ahart 2007-6-12 14067 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  CHSC71190  Rosa multiflora Lowell Ahart 1998-5-2 7958 Butte On the south side of Evans Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CDA32003  Rosa pisocarpa L. Ahart 2009-5-3 15800 Butte South of a small stream, meadow, about 30 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
  UC1926782 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC83008  Rosa rubiginosa Lowell Ahart 2002-9-8 9933 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  CAS-BOT-BC148255  Rosa woodsii var. ultramontana A. A. Heller 1938-7-20 15283 Butte Occasional along a stream in a meadow, upper end of Snag Lake, 7 miles east of Chaparral. 1524 Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC73813  Rubus glaucifolius B. Castro; L. Hanson 1996-8-22 718 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with its South Branch, on the extreme W end of Mtn Spring House Ridge. On knoll, ca 0.2 mi N of overlook to Seven Falls. 1005 Comment
  CAS-BOT-BC148351  Rubus laciniatus Clarence R. Quick 1962-8-19 62 -81 Butte Coyote Gap-Four Trees Road, Plumas National Forest Comment
  SEINET10483577  Rubus laciniatus Mary Susan Taylor 1980-5-27 Taylor 2649 A 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
  CHSC52475  Rubus parviflorus L. P. Janeway 1987-5-20 2078 Butte Along Heinz Cr along hwy 70 2.1 mi NE of Pulga bridge. 457 Comment
  UC136459  Rubus parviflorus Mrs. R. M. Austin July 1899 779 Butte Colby Comment
  UCD166757  Rubus praecox Marcel Rejmanek 2016-10-6 2159 Butte A ditch by the Highway 99, ca 1 km S of Nelson Ave. Comment
  SEINET10483603  Rubus procerus Mary Susan Taylor 1975-5-24 Taylor 771 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CHSC48876  Rubus ursinus Vernon Oswald 1987-4-6 2308 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. 80 Comment
  CHSC48915  Rubus ursinus Vernon Oswald 1983-5-1 405 Butte Upper Bidwell Park, Chico, on the s border of the trail 100 ft e of the turn-around at the e end of Upper Park Rd. 207 Comment
  CHSC50800  Rudbeckia occidentalis var. occidentalis Vernon Oswald; Lowell Ahart 1990-7-31 4421 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CDA34636  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of a pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC113447  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC42496  Rumex acetosella Lowell Ahart 1987-6-9 5742 Butte 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
  JEPS121924  Rumex acetosella Lowell Ahart 2014-7-10 19632 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  POM104793  Rumex acetosella C. C. Bruce 1897-05 1936 Butte Butte Creek. Comment
  CHSC116294  Rumex conglomeratus Lowell Ahart 2015-10-16 20554 Butte On west side of Feather River, about half way of and east of ne Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  JEPS115372  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles no 232 Comment
  CDA42867  Rumex pulcher L. Ahart 2012-5-14 18049 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CHSC58271  Rumex salicifolius var. triangulivalvis Lowell Ahart 1992-5-9 6768 Butte On the bottom of a small stream, east of Cherokee Road, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 91 Comment
  CHSC109087  Sagina decumbens subsp. occidentalis Lowell Ahart 2012-4-20 17899 Butte Seep along a small wash, east of South Rim Trail, south of Bloody Pin Trail, about 5/8 mile west of Highway 32, about 7 miles northeast of Chico, south part of Upper Bidwell Park. 243 Comment
  CHSC96487  Sagina decumbens subsp. occidentalis Lowell Ahart 2007-4-16 13673 Butte On the south side of a small wash, about 100 yards east of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 63 Comment
  CHSC98805  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 238 Comment
  JEPS122065  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET5337060  Sagina decumbens subsp. occidentalis B. Ertter, Jeffrey L. Strachan; L. Ahart 1980-5-7 3295 Butte Peter Ahart Ranch ca 2-1/2 miles NNE of Honcut between Oroville and Marysville. 30 Comment
  CHSC112722  Sagina saginoides Lowell Ahart 2013-10-26 19211 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  POM219074  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville. Kirby's Meadow. 1750 Comment
  SEINET10538833  Salix exigua Mary Susan Taylor 1975-4-26 Taylor 525 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  SEINET11987376  Salix exigua E. L. Smith 1971-1 1064 Butte Big Chico Creek in Bidwell Park, Chico Comment
  JEPS119882  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the bottom of Beatson Hollow, about 1mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC103000  Salix gooddingii Lowell Ahart 2009-6-3 15827 Butte Meadow, about 50 yards southeast of the gate, about 40 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 257 Comment
  CHSC108823  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte On the west side of a deep ditch, area where cobbles were removed for Oroville Dam, about 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC76835  Salix gooddingii L. P. Janeway 1999-11-15 6626 Butte Northern Sierra Nevada foothills. Within 40 ft below high water line of Lake Oroville, in ravine below Nelson Bar Road 0.5 mi north-northwest of Lime Saddle. 274 Comment
  CAS-BOT-BC104072  Salix hindsiana Gordon H. True 1971-4-8 6452 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CAS-BOT-BC106937  Salix laevigata Lowell Ahart 1987-5-22 5683 Butte near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls 1219 Comment
  RSA755039  Salix laevigata L. Ahart 2009-5-15 15687 Butte E side of Big Chico Creek, about 50 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 204 Comment
  CHSC109074  Salix lasiandra var. lasiandra Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 18913 Butte On the north side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC32614  Salix lasiolepis J. D. Jokerst 1979-2-23 1134 A Butte Top of North Table Mt., W edge of mountain at the top of the S fork of Coal Cr Canyon. 365 Comment
  POM107141  Salix lasiolepis C. C. Bruce 1898-05 2480 Butte Little 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
  CAS-BOT-BC124578  Salix lemmonii John Thomas Howell; Gordon H. True 1967-5-9 42240 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  UC600411  Salix ligulifolia E. B. Copeland 1931-6-18 Butte Jonesville 1550 Comment
  CHSC9692  Salix melanopsis E. L. Smith 1971-9-12 1064 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC446423  Salix melanopsis E. B. Copeland 1931-6-20 Butte across Butte Creek Jonesville 1500 Comment
  UC446425  Salix melanopsis E. B. Copeland 1931-6-30 Butte Jonesville beside Butte Creek 1500 Comment
  LA208913  Salix scouleriana E. B. Copeland; 1931-7-30 sn Butte Jonesville 1550.0 Comment
  CAS-BOT-BC129003  Salix sitchensis A. A. Heller 1913-6-7 10832 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC76401  Salsola tragus Lowell Ahart; Vernon H. Oswald 1999-10-3 8295 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95990  Salsola tragus Lowell Ahart and Vernon H. Oswald 1999-10-3 8295 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC66435  Sambucus mexicana Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .1 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CDA42912  Sambucus nigra subsp. caerulea L. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Tables 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC12398  Samolus parviflorus Lowell Ahart 1973-6-28 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC23533  Sanicula bipinnata M. S. Taylor 1976-3-9 1021 Butte Ca. 500 yds n of the Skyway, ca. 13 mi e of Chico. 457 Comment
  CHSC45732  Sanicula bipinnata Troy Griffiths 1988-3-8 64 Butte N side of Cohasset Rd., ca. 4 mi ne of Chico Municipal Airport, Chico. 106 Comment
  SEINET10873886  Sanicula bipinnata Mary Susan Taylor 1980-3-1 Taylor 2324 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
  UC1006698  Sanicula crassicaulis C. Ritchie Bell 1952-4-19 3 X419 Butte 3.8 mi ne of Berry Creek (in (an old home site)) Comment
  SEINET10939830  Sanicula crassicaulis Lowell Ahart 1984-4-3 Ahart 4540 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  CHSC42667  Sanicula graveolens Vernon Oswald 1986-6-22 2141 Butte Humboldt Summit. 1999 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
  SEINET13945254 Image available Sanicula tuberosa A. A. Heller 1915-1 11807 Butte Plentiful near Cohasset in the chaparral. Near the upper limit of the digger pine in the Sierra foothills. Comment
  SEINET10965510  Saponaria officinalis Mary Susan Taylor 1982-8-16 Taylor 4987 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  UC392198  Sarcodes sanguinea E. B. Copeland Jul 1929 Butte Jonesville 472 Comment
  UC1212526  Saxifraga odontoloma E. B. Copeland 1931-7-20 Butte vicinity of Jonesville (Lassen National Forest); Lassen National Forest 1500 Comment
  CHSC33660  Sceptridium multifidum R. A. Schlising; K. Tarp 1981-7-28 4170 Butte N of Inskip in NE part of county, near junction of creek from Coon Hollow and West Branch of North Fork of Feather River. 1328 Comment
  CHSC37094  Sceptridium multifidum L. Ahart 1982-9-13 3817 Butte Along mined edge of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC51841  Sceptridium multifidum L. P. Janeway 1986-9-1 1830 Butte East end of Philbrook Reservoir. 1691 Comment
  SEINET10472665  Schoenolirion album Mary Susan Taylor 1977-8-17 Taylor 1465 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  NY663861  Schoenoplectus mucronatus L. Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 50 Comment
  UCD49962  Schoenoplectus mucronatus Carl Wick 1983-6-1 s.n. Butte CA. Butte Co. Comment
  SFV12648  Scirpus acutus var. occidentalis M. L. Vincent 1963-6-10 424 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  SEINET13711019  Scirpus cernuus Lowell William Ahart, Lowell William Ahart 2000-1 8390 Butte 12 Air Mi. SSE of Oroville (T17N, R4E, sec 11, SE 1/4) 130 Ft. 40 Comment
  CHSC97341  Scirpus microcarpus L. P. Janeway 2007-8-6 9150 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Dense clumps of this plant occasionally on rotting logs in the now waterless (seasonal dry down), but still soggy, upper part of the pond. 776 Comment
  SEINET10971844  Scirpus setaceus Lowell Ahart 1984-6-8 Ahart 4685 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  SEINET10466960  Scirpus tuberosus Lowell Ahart 1991-9-14 Ahart 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC90633  Scleranthus annuus subsp. annuus Lowell Ahart 2005-4-2 11687 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC30028  Scribneria bolanderi L. Ahart 1980-5-4 2173 Butte Pasture field southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  SEINET10548953  Scrophularia californica subsp. floribunda Lowell Ahart 1990-10-21 Ahart 6634 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. Foothill Woodland (destroyed). 244 Comment
  CHSC42832  Scutellaria californica L. P. Janeway 1987-5-20 2074 Butte Along hwy 70 1.7 mi NE of Pulga bridge; N Fk Feather River at Poe Dam. 472 Comment
  CHSC58274  Scutellaria californica Lowell Ahart 1992-5-9 6761 Butte On the north side of the dirt road, on the north side of Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC65570  Scutellaria californica R. Banchero 1980-5-23 160 Butte Ca. 1.6 mi NW of jcn of Nelson Bar Rd and Lunt Rd, ca 0.4 mi from where Nelson Bar Rd meets Lake Oroville. 384 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
  CHSC44282  Scutellaria siphocampyloides Vernon H. Oswald; Lowell Ahart 1988-6-17 3390 Butte East of Forbestown Rd. at the e end of Black Bart Rd. 743 Comment
  SBBG128802  Scutellaria siphocampyloides L. Ahart 2013-5-27 18708 Butte under trees ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 763 Comment
  CAS-BOT-BC415019  Sedella pumila A. A. Heller 1938-4-22 15042 Butte U.S. Highway #99E about 9 miles N of Chico Comment
  SD67709  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville Road, ca. 7.0 miles from Chico. Comment
  UC1410123  Sedum spathulifolium H. M. Wheeler 1954-3-12 Butte ne Oroville (Feather Falls on the Fall River); , ne of Oroville 571 Comment
  UCD14853  Sedum spathulifolium Tamara Kan 1991-5-11 20 Butte California, Butte Co.; along the north fork of Feather River, 30 mi. north of the town of Oroville; 451 Comment
  RSA590214  Selaginella hansenii Michael A. Vincent, Robert M. Rhode, Jim Anowden 1996-3-29 7225 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  SEINET10932886  Selaginella wallacei Mary Susan Taylor 1980-9-27 Taylor 3345 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CDA14051  Senecio aronicoides G. F. Hrusa, T. D. Wilfred 1997-5-1 13699 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC8148  Senecio aronicoides D. McClain 1969-3-20 84 Butte 1/2 mi. e. of Hooker Oak along the Chico Creek, Upper Bidwell Park, Chico. 64 Comment
  UC472365  Senecio aronicoides H. M. Hall 1912-5-26 Butte Stirling City Sierra Nevada Mountains Comment
  RSA0012439  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville. 1524 Comment
  CHSC24645  Senecio integerrimus var. major S. Deaton 1976-4-23 38 Butte 20 ft sw of Feather Falls trail, ca. 1 3/4 mi n of Falls parking lot. 853 Comment
  CAS-BOT-BC363995  Senecio integerrimus var. major Lowell Ahart 1982-5-8 3410 Butte About 1/2 mile south-west of the Forbestown Res. 800 Comment
  CHSC116206  Senecio sylvaticus Lowell Ahart 2015-7-4 20269 Butte Clear cut area on the south side of the County Road, about 3/4 mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1270 Comment
  JEPS117239  Senecio sylvaticus Lowell Ahart 2010-5-20 16707 Butte On both sides of the Yahi Trail, east if the dirt road, west of Big Chico Creek, Upper Bidwell Park, about 6 miles (air) northeast of Chico 182 Comment
  SBBG128460  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte high E cliff edge of Big Chico Crk, ca. 20 yards W of S Rim Trail, S part of Upper Bidwell Park, ca. 2.5 mi NE of Chico 206 Comment
  CDA8687  Senecio triangularis T. C. Fuller 1962-7-12 9168 Butte 2 miles east of Butte Meadows. 0 Comment
  POM219171  Senecio triangularis H. F. Copeland 1928-8-17 251 Butte Jonesville. Comment
  CHSC101087  Senecio vulgaris Lowell Ahart; John Dittes 2009-3-20 15502 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC40552  Senecio vulgaris Ahart; Jokerst 1985-3-24 4867 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
  CHSC4118  Senecio vulgaris R. Carter 1966-4-2 325 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house, in pasture. 243 Comment
  CHSC92506  Senecio vulgaris Lowell Ahart 2005-12-11 12510 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CDA7658  Senecio vulgaris A. C. Browne 1951-3-28 Butte Bidwell Bar. 0 Comment
  SEINET9798642 Image available Sesbania punicea Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  JEPS124335  Setaria parviflora Lowell Ahart 2015-10-16 20558 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  JEPS127628  Setaria parviflora B. Castro 2008-7-15 1758 Butte 2 mi W of Hwy 99 and 1 mi SE of Richvale, and NE corner of Cherokee Canal and Richvale Hwy. Comment
  JEPS119816  Setaria viridis Lowell Ahart 2012-8-10 18416 Butte On the west northeast side of Bidwell Mansion, on the southwest side of the parking area, Bidwell Mansion, Chico. Comment
  CHSC29977  Sidalcea asprella Lowell Ahart 1980-5-17 q 2300 Butte About .5 mi SE of Hurleton, slightly E of Oak Grove Cemetery. 600 Comment
  CHSC13724  Sidalcea calycosa J. G. Moore 1969-4-13 141 Butte Stilson Canyon Rd., 1.4 mi. se of jct. with Bruce Rd., Chico. Comment
  JEPS119893  Sidalcea calycosa subsp. calycosa Lowell Ahart 2012-6-5 18164 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  UC1124956  Sidalcea glaucescens P. L. Johannsen 1936-7-21 958 Butte 1 1/2 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC10735  Sidalcea hartwegii Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90253  Sidalcea hartwegii Eric M. Haney 1989-4-21 8 Butte Found in Bidwell Park ca. 100 m e of Horseshoe Lake. Comment
  POM61856  Sidalcea hartwegii A. A. Heller, H. E. Brown 1902-5-9 5512 Butte Berry Canyon (near Clear Creek) from type region Comment
  CHSC26813  Sidalcea hirsuta 1978-5-7 1615 Butte Richvale vernal pool area, ca. 20 mi s of Chico, on w side of Hwy 99. 30 Comment
  CHSC34959  Sidalcea hirsuta R. A. Schlising 1981-5-3 4045 Butte N of Chico, slightly E of Highway 99; just N of Meridian Road. Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  CAS-BOT-BC213188  Sidalcea robusta A. A. Heller 1940-4-28 15564 Butte Ridge above chico Creek opposite the Golf Links east of Chico Comment
  POM84694  Sidalcea robusta C. C. Bruce 1898-05 2390 Butte Forest Ranch Comment
  SEINET11931589  Silene californica Unknown 1974-1 32 Butte ca 10 mi NE of Chico on Cohassett Rd 549 Comment
  CHSC32372  Silene gallica J. D. Jokerst 1979-5-2 1222 Butte Top of North Table Mt., S of Cherokee Rd at the E edge of the mountain. 396 Comment
  CHSC24673  Silene laciniata subsp. californica S. Deaton 1976-4-14 17 Butte Ca. 2 1/2 mi n of Feather Falls parking lot, 15 ft off nw side of Falls trail. 853 Comment
  UC398910  Silene lemmonii E. B. Copeland 1929-7-15 359 Butte Jonesville 1550 Comment
  CHSC66154  Silybum marianum Vernon H. Oswald; Lowell Ahart 1996-5-27 7667 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS98990  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CAS-BOT-BC74931  Sinapis arvensis A. A. Heller 1914-3-13 11199 Butte Hills 8 miles north of Oroville. Comment
  CHSC31639  Sisyrinchium bellum L. Ahart 1977-5-20 1385 Butte Along edge of a small wash. Peter Ahart Ranch, Honcut. 60 Comment
  JEPS115613  Sisyrinchium bellum Lowell Ahart 2009-5-23 15734 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
  SEINET12051032  Sisyrinchium bellum Unknown 1987-1 1072 Butte Stirling City Quad, 7 km N of Inskip on Bull Hill Rd Comment
  CDA42899  Solanum americanum L. Ahart 2012-6-14 18185 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC38725  Solanum americanum Vernon Oswald 1983-7-21 887 Butte Upper Bidwell Park, Chico, in Lindo Channel near the flood-control gates. 79 Comment
  CHSC39226  Solanum americanum M. S. Taylor; K. Tharp 1983-3-11 5232 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  CHSC45724  Solanum parishii J. Marr 1988-3-27 18 Butte 20 ft n side Concow Rd ca. 5 mi e of Hwy 70, 18 mi n of Oroville. 365 Comment
  SEINET7274373 Image available Solanum parishii S. Jones 29 Butte ca. 0.25 mi E of jct of Stilson Canyn Rd. and Bruce Rd.; Butte County Comment
  CHSC94184  Solanum physalifolium var. nitidibaccatum Lowell Ahart 2006-7-4 12910 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC365378  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CHSC30664  Solidago elongata M. S. Taylor 1978-7-21 1832 Butte On n side of Oroville-Quincy Hwy in meadow, ca. 1 mi s of Butte County-Plumas County line. 1341 Comment
  SBBG27341  Solidago elongata E. B. Copeland 1930-8-27 Butte Jonesville 1500 Comment
  CAS-BOT-BC364941  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way 575 Comment
  JEPS115532  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  CHSC111368  Sonchus oleraceus Lowell Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. 79 Comment
  CHSC31659  Sonchus oleraceus L. Ahart 1978-7-15 1782 Butte Around the garden, Peter Ahart Ranch, Honcut. 50 Comment
  CHSC6086  Sonchus oleraceus B. Wilson 1968-4-17 153 Butte NE of Greenhouse, CSC campus. 59 Comment
  CHSC35221  Sorbus scopulina M. S. Taylor 1981-5-13 3706 Butte Jct of 23N15.5, 22N66X, and 22N40, ca. 2 air mi s of Four Trees Rd, ca. 1 air mi w of Elks Retreat on Oroville-Quincy Shy. 1280 Comment
  CAS-BOT-BC235258  Sorghum bicolor John Thomas Howell 1959-9-26 35094 Butte Roadside at Pulga Bridge, N. Fk. Feather River Comment
  CDA43079  Sorghum halepense L. P. Janeway 2011-8-18 10662 Butte Northern High Sierra Nevada.; Plumas National Forest; top of Bloomer Hill. Comment
  SEINET8233923  Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC33957  Sparganium emersum subsp. emersum M. S. Taylor; L. Ahart 1981-8-16 4195 A Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. In pond. 1828 Comment
  SEINET10939979  Spartium junceum Mary Susan Taylor 1980-5-31 Taylor 2751 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CDA7727  Spergula arvensis subsp. arvensis L. Ahart 2006-4-23 12533 Butte On the west side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC224  Spergula arvensis subsp. arvensis M. Anthony; L. Ahart 1963-5-15 Butte Honcut. 32 Comment
  CHSC45561  Spergula arvensis subsp. arvensis Lowell Ahart 1977-5-22 1394 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC390131  Spergularia bocconi Lowell Ahart 1981-4-6 2743 Butte Sutter Buttes Region. West of the Gray Lodge Headquarters, about 8 miles southwest of Gridley 35 Comment
  CHSC34818  Spergularia rubra M. S. Taylor 1981-5-27 3804 A Butte In path, nw end of Paradise Lake near old barn, ca. 3 air mi n of Magalia. 792 Comment
  CHSC42800  Spiraea douglasii L. P. Janeway 1987-6-8 2168 Butte Along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 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
  CHSC44426  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock. 762 Comment
  RSA0036991  Spiraea douglasii Lowell A. Ahart 2013-7-1 18813 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  SBBG128718  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CHSC102516  Spiranthes porrifolia Lowell Ahart 2009-5-30 15961 Butte Along a small drainage west of the Guardian Rock Trail, about 10 yards northwest of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC59032  Spiranthes porrifolia Lowell Ahart 1992-8-2 6900 Butte On the west side of Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  UCD22593  Spiranthes porrifolia L. K. Mann 1959-6-5 s.n. Butte Along road between Oroville and Peutz, north of turnoff to Oregon City. Comment
  SEINET3163884  Spraguea umbellata K. Conger 1907-1 sn Butte Brush Creek Comment
  CHSC11986  Stachys ajugoides var. rigida E. B. Copeland 1930-7-20 451 Butte Jonesville. 1500 Comment
  CHSC809  Stachys ajugoides var. rigida V. Holt 1952-7-9 Butte 56 Comment
  CHSC99492  Stachys pycnantha Lowell Ahart 2008-7-23 15154 Butte West side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  UCR51781  Stanleya pinnata M. M. Boney 1897-1 s.n. Butte Butte Co. 287 Comment
  CHSC52334  Stebbinsoseris heterocarpa J. D. Jokerst 1985-4-14 2233 Butte Top of North Table Mt, N of Cherokee Rd., near E edge of mesa. 396 Comment
  CHSC113500  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  RSA0041906  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 s.n. Butte Jonesville. Comment
  CHSC39071  Stellaria media R. A. Schlising 1983-3-20 4399 Butte Richvale Vernal Pools, 0.25 mile south of junction with Highway 162 to Oroville, along Highway 99 and across from Thermalito Afterbay. Near fences. Comment
  CHSC10654  Stellaria nitens Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC395111  Stellaria nitens A. A. Heller 1916-4-13 12325 Butte Stilson canyon E of Chico Comment
  SEINET10833473  Stellaria nitens Lowell Ahart 1983-3-28 Ahart 3907 Butte Ca 0.5 mi sw of Forbestown Reserv., along the rd in slide area, ca. 4 mi ne of Forbestown. On serpentine, Yellow Pine Forest. 450 Comment
  SEINET12558144 Image available Stellaria nitens Lowell Ahart 1983-1 3907 Butte about 1/2 mile southwest of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown, California 450 Comment
  JEPS99035  Stephanomeria elata Lowell Ahart 1998-11-11 8064 Butte Near large oak trees, north of the stream to Phantom Falls, about 1/2 mile west of the cattle chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 371 Comment
  CHSC38392  Stephanomeria exigua subsp. macrocarpa Vernon Oswald 1983-7-3 801 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 280 Comment
  POM193087  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville. 1550 Comment
  JEPS94722  Streptanthus diversifolius Lowell Ahart 1998-6-3 7967 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
  UCD164222  Streptanthus diversifolius N. Ivalu Cacho; Sharon Y. Strauss 2013-4-19 IC-SS 299 Butte Table Mountain. 1177 Comment
  CAS-BOT-BC87388  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 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
  CHSC93961  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  NY888395  Streptanthus longisiliquus G. Clifton 1997-6-13 35529 Butte Ca. 0.8 km. North of Robley Point 939 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
  HSC96685  Streptanthus polygaloides L. P. Janeway 2006-5-28 8639 Butte N High Sierra Nevada, W side of Concow Rd., 3.2 mi. NE of upper end of Concow Reservoir 860 Comment
  JEPS34385  Streptanthus polygaloides Rimo Bacigalupi and P. C. Hutchison, J. K. Wright 1963-6-1 8861 Butte 0.75 mi. s. Pulga (cliff above side rd. off U.S. Hwy. 40 in canyon of N. Fork Feather R., n. base of grade over Jarbo Gap, just before bridge across Feather R.); canyon of N. Fork Feather R. 426 Comment
  SBBG29856  Streptanthus polygaloides L. Constance 1941-5-28 2826 Butte south branch of the Feather River at Magalia 487 Comment
  UC1492816  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4175 Butte on Ponderosa Rd 0.9 mi w Rattlesnake Creek (ne of Magalia) Comment
  CAS-BOT-BC87510  Streptanthus tortuosus Lowell Ahart 1987-5-9 5597 Butte Along Pulga Road, about 0.5 mile SW of Bardees Bar along the North Fork of the Feather River, about 3 miles SW of Pulga. 365 Comment
  CHSC4639  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-21 353 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 4 yds. off E side Old Cherokee Rd., 5.4 mi. from Chico Rd. Comment
  CHSC93859  Streptanthus tortuosus var. suffrutescens Lowell Ahart 2006-6-9 12647 Butte Cutbank, on the west side of 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. 403 Comment
  CHSC58895  Streptanthus tortuosus var. tortuosus Lowell Ahart 1992-7-29 6872 Butte About 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC36089  Streptopus amplexifolius var. americanus R. A. Schlising; K. Tarp, D. Burk 1982-6-27 4306 Butte SE part of county S of Lost Creek Res. At crossing of Strawberry Valley Creek. 1097 Comment