Search Results — 2000 specimen records retrieved (1582 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
  CHSC1769  Abronia latifolia R. Morford 1931-4-30 Butte Salmon Hole, Chico Creek. 152 Comment
  RSA0025840  Abronia turbinata M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC34968  Abutilon theophrasti R. A. Schlising 1981-9-26 4208 Butte West of Chico along Sacramento Avenue; just west of Mud Creek. Comment
  CAS-BOT-BC330624  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  SEINET10973041  Acer glabrum var. torreyi Mary Susan Taylor 1978-6-24 Taylor 1649 Butte Summit of Humboldt Road, at Butte and Tehama County line. 2134 Comment
  CAS-BOT-BC334156  Acer negundo var. californicum Lewis S. Rose 1937-6-10 37378 Butte 7 miles W of Honcut along Feather River 22 Comment
  CAS-BOT-BC21703  Achillea millefolium H. F. Copeland 1920-8-29 148 Butte Jonesville 1219 Comment
  CHSC49581  Achnatherum lemmonii Vernon Oswald 1983-7-6 835 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. 1325 Comment
  UCD50573  Achnatherum lemmonii P. B. Kennedy 1914-5-8 s.n. Butte Paradise Grade. Comment
  CHSC2193  Achnatherum occidentale subsp. californicum H. Silberman; D. Isaac 1949-5-17 Butte Big Chico Creek Canyon, 7 1/2 mi. east of Chico. 182 Comment
  UC590008  Achnatherum occidentale subsp. californicum P. L. Johannsen 1936-7-17 933 Butte 2 1/2 mi sse Butte Meadows; Lassen National Forest, Paynes Cr. Quadrangle 1554 Comment
  SEINET7593433 Image available Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  UCD51409  Achnatherum stillmanii M. L. Maynard 1984-8-1 s.n. Butte Hwy. 32, 30 miles east of Chico. Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CHSC88869  Achyrachaena mollis Christine Hantelman 2000-4-20 77 Butte On south side of fence about 1.25 miles east on Wookey Road. 112 Comment
  CHSC30682  Acmispon americanus var. americanus M. S. Taylor 1978-7-18 1689 Butte N side of Old Humboldt Rd, ca. 1 mi e of jct of Old Humboldt Rd and Hwy 32. 1325 Comment
  CHSC37260  Acmispon americanus var. americanus L. Ahart 1982-6-15 3578 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  UCD103795  Acmispon americanus var. americanus A. A. Heller 1914-7-23 11615 Butte Chico Meadows. 1219 Comment
  UCD103809  Acmispon americanus var. americanus A. A. Heller 1917-7-26 12826 Butte Butte Meadows. 1402 Comment
  CAS-BOT-BC204850  Acmispon argophyllus var. fremontii Lowell Ahart 1983-7-29 4256 Butte About 3 miles east of Milsap Bar, about 25 miles north-east of Oroville 1100 Comment
  CHSC40913  Acmispon argophyllus var. fremontii Lowell Ahart 1977-4-28 1324 Butte About 1 mile north-east of the Ponderosa Dam, north of Forbestown. 457 Comment
  CHSC42559  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 1/2 miles south-west of Pulga. 365 Comment
  CHSC90519  Acmispon brachycarpus Mark Bradford 1983-4-19 7 Butte Near Salmon Hole (Bidwell Park) ca. 7 mi. e of Chico, 2 mi. e of Bidwell Golf Course, 100 yds. n of Big Chico Creek. 76 Comment
  CHSC62739  Acmispon grandiflorus var. macranthus L. P. Janeway 1993-5-20 4350 Butte Plumas National Forest. Swayne Hill. South-facing road cutbank overlooking lower French Creek. 746 Comment
  CHSC33336  Aconitum columbianum R. Banchero 1980-8-1 330 Butte 0.4 mi w of the e end of Philbrook Lake, 4.3 mi se of the jct of Skyway and Philbrook Rd. Mdw. 1706 Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CHSC28677  Aconogonon davisiae M. S. Taylor 1978-7-18 1705 A Butte On top of Humboldt Peak, at Humboldt Summit. 2158 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 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. At the intlet of the large lake. 1935 Comment
  CHSC20048  Adenostoma fasciculatum M. S. Taylor 1975-4-25 494 Butte Ca. 1/2 mi e of Cohasset Hwy, ca. 10 mi n of Chico. Comment
  CHSC23464  Adiantum jordanii J. R. Lee 1974-4-15 1 Butte Found at base of cliff 300 yds se of 9th hole on the Bidwell Municipal Golf Course building, Chico. 76 Comment
  CHSC41132  Adiantum jordanii R. A. Hunt 1976-4-28 1 Butte Ca. 1 km n on Helltown Rd on steep embankment on e side of road. Ca. 18.5 km ene of CSU@Chico on course 66 degrees 30 minutes. In Butte Canyon ca. 1 km n of junction of Helltown Rd. and Humbug Rd. 225 Comment
  CHSC41988  Adiantum jordanii Lowell Ahart 1975-3-7 704 Butte Along Ponderosa Way, about 1 1/2 miles south of the Ponderosa Reservoir, north-west of Forbestown. 426 Comment
  CHSC99560  Adiantum jordanii L. P. Janeway 2008-6-22 9421 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  JEPS116129  Adiantum jordanii Lowell Ahart 2009-5-23 15742 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 Highwat 32, about 10 miles northeast of Chico 234 Comment
  CAS-BOT-BC110726  Aegilops triuncialis Lowell Ahart 1980-5-4 2162 Butte Thermalito. 65 Comment
  CAS-BOT-BC202592  Aesculus californica Grace Kermode 1899-5-30 s.n. Butte Centerville Comment
  CAS-BOT-BC202594  Aesculus californica Lowell Ahart 1985-6-17 5045 Butte Near the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 762 Comment
  CHSC3857  Aesculus carnea Gary Dutton 1966-4-13 205 Butte Found in front of CSC Aud. Comment
  CAS-BOT-BC22964  Agoseris heterophylla Lowell Ahart 1982-6-4 3542 Butte 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 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 mile of Magalia. 1097 Comment
  SEINET10912569  Agrostis avenacea Lowell Ahart 1986-9-11 Ahart 5468 Butte On dry red gravelly soil, on the bottom of a pond, about 1/10 mile S of the clay burrow for oroville Dam, 1/4 mile E of Larking Road, about 6 miles SW of Oroville 37 Comment
  CHSC117594  Agrostis capillaris B. Castro; Melinda Carlson 2007-10-25 1681 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek within surrounding disturbed riparian forest. Arroyo Chico land grant area. 39 Comment
  CAS-BOT-BC127336  Agrostis exarata John Thomas Howell 1955-6-15 30474 Butte Paradise. 518 Comment
  CHSC50701  Agrostis exarata Lowell Ahart 1990-5-21 6475 Butte About 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  CHSC61654  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UCD52304  Agrostis exarata August L. Hormay 1929-7-24 s.n. Butte 3 miles North of Pulga. Comment
  CHSC50810  Agrostis exarata var. monolepis Vernon Oswald; Lowell Ahart 1990-7-31 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC139715  Agrostis gigantea M. S. Taylor 1978-7-18 1676 Butte On west side of Highway 32. Ca. 0.25 mile north of Forest Ranch. 723 Comment
  CHSC34060  Agrostis gigantea L. Ahart; M. S. Taylor, J. T. Howell 1981-8-15 3045 Butte N end of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  RSA299243  Agrostis gigantea M. S. Taylor 1978-8-21 1796 Butte Lake Madrone at its s jct with Oroville-Quincey Hwy ca. 10 mi ne of Oroville. 610 Comment
Read comments
Oct 9 2010
  CAS-BOT-BC138853  Agrostis microphylla Lowell Ahart 1980-7-20 2473 Butte At Big Bald Rock. 1100 Comment
  UC1594697  Agrostis perennans Lowell Ahart 1992-7-21 6809 Butte about 2 (air ) mi ne Philbrook Reservoir (s side of Coon Hollow); Coon Hollow 1737 Comment
  JEPS95031  Agrostis scabra Lowell Ahart 1997-10-20 7918 Butte 3 air mi nw of Sly Creek Reservoir Dam (on w side of the sharp bend in South Fork of Feather River, about 1/4 mi n of the bridge across river, about 3/4 mi n of Golden Trout Crossing); South Fork of Feather River 914 Comment
  CHSC91470  Agrostis stolonifera Lowell Ahart 2005-7-13 12150 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC41923  Agrostis thurberiana Lowell Ahart 1983-8-16 4290 Butte Near a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  UC600598  Agrostis variabilis H. F. Copeland 1932-8-17 Butte at the Summit (Jonesville); Jonesville 2000 Comment
  CHSC96863  Agrostis viridis Lowell Ahart 2007-6-3 13977 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
  JEPS114957  Aira caryophyllea Lowell Ahart 2008-5-12 14740 Butte below the high water line of Lake Oroville, on the E side of Sucker Creek, about 40 yds N of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi W of the Ponderosa Dam 258 Comment
  CAS-BOT-BC138408  Aira caryophyllea var. capillaris M. S. Taylor; J. D. Jokerst; L. Ahart 1980-4-6 2442 Butte Old road ca. 100 feet west of Rocky Honcut Creek, ca. 1/8 mile north of Swedes Flat Road, ca. 2 miles east of Oroville-Bangor Highway, ca. 10 miles southeast of Oroville. 365 Comment
  CDA43078  Albizia julibrissin L. P. Janeway 2011-7-7 10503 Butte Sacramento Valley.; Near edge of water, south side of Feather River just east of Bedrock Park, Oroville. Comment
  CHSC46618  Alisma lanceolatum Vernon H. Oswald 1988-8-5 3618 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). 85 Comment
  JEPS104027  Alisma plantago-aquatica Lowell Ahart 2003-6-23 10304 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  RSA725061  Allium amplectens L. P. Janeway 2006-4-30 8569 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC460740  Allium amplectens A. A. Heller; H. E. Brown 1902-5-7 5480 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  CAS-BOT-BC465438  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  CHSC3533  Allium cratericola John Francis 1966-3-28 89 Butte Table Mt. Comment
  CHSC115468  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CHSC86446  Allium jepsonii Jenny Marr 1993-7-1 99 Butte Northern Sierra Nevada, between Concow and Pulga, on a serpentine rockoutcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CAS-BOT-BC472966  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Gap; Sierra Nevada Comment
  SEINET10872298  Allium membranaceum Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4698 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC96417  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. 762 Comment
  POM169679  Allium peninsulare var. peninsulare A. A. Heller 1902-5-13 5538 Butte Grade between Clear Creek and Paradise Comment
  CAS-BOT-BC474065  Allium platycaule A. A. Heller 1915-6-16 12024 Butte Summit of Sierra Nevada above Jonesville 2133 Comment
  CAS-BOT-BC475439  Allium serra S. P. Rixford 1918-5-1 s.n. Butte Chico Comment
  JEPS117691  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville 39 Comment
  CAS-BOT-BC171271  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  SEINET269930  Alnus rhombifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows 1219 Comment
  UCD109998  Alnus rhombifolia Kathy Corson 1969-4-6 17 Butte Big Chico Creek just inside entrance off East 4th Street to Bidwell Park, Chico. Comment
  SEINET10478439  Alnus rhombifolia Mary Susan Taylor 1979-10-12 Taylor 2242 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  RSA715579  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte Drain ditch, 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10511013  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil of floor of rice field, Peter Ahart Ranch, ca. 2 mi. NE of Honcut. Very common; 50 m. Comment
  CHSC23423  Alopecurus saccatus P. Fehr 1974-4-23 14 Butte Collected along side of Keefer Rd., 8 mi e of junction with Hwy 99, ca. 10 mi n of Chico. 57 Comment
  CHSC31727  Alopecurus saccatus L. Ahart 1980-5-10 2236 Butte Ca. 2.5 mi n and 1/8 mi e of Honcut. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35536  Alopecurus saccatus Marilyn Lee 1968-4-19 141 Butte Table., ca 3/7 mile W. of Cherokee Road. Comment
  CHSC115153  Amaranthus albus Lowell Ahart 2015-6-6 20202 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  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
  UCD97101  Amaranthus albus L. Ahart 1982-7-10 3671 Butte 1/4 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Comment
  CHSC51346  Amaranthus californicus Vernon Oswald 1990-9-27 4454 Butte Paradise Lake, ca. 3 mi north of Magalia. 772 Comment
  CDA42944  Amaranthus deflexus L. Ahart 2012-10-2 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS120724  Amaranthus palmeri Lowell Ahart 2013-10-12 19111 Butte On the west side of Highway 99E, about 20 yards south of B Street, about 1 mile east of Biggs Comment
  CDA3281  Amaranthus retroflexus L. Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC76263  Amaranthus rudis Lowell Ahart 1999-9-21 8266 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
  CHSC76264  Amaranthus rudis Lowell Ahart 1999-9-21 8267 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC50790  Ambrosia artemisiifolia Vernon H. Oswald; Lowell Ahart 1990-7-31 4425 Butte Camelot Estates Subdivision on the north side of Concow Reservoir. 621 Comment
  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
  CHSC28645  Ammannia coccinea M. S. Taylor 1978-9-8 1889 Butte Along flood control slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  CHSC84033  Ammannia robusta Lowell Ahart 2003-6-19 10294 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
  UCD169263  Amorpha fruticosa Lowell Ahart 2012-6-9 18177 Butte About 30 yards east of Ten Mile Road House, about 1/8 mile north of the old homestead, Upper Bidwell Park, about 9 miles (air) northeast of Chico. 269 Comment
  UCD169357  Amorpha fruticosa Lowell Ahart 2012-5-12 18027 Butte About 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. About 300 yards southwest of Ten Mile House Road. On the north side of a deep drainage, north of the large meadow, northeast of the old homestead. 268 Comment
  SEINET12319577  Amsinckia intermedia J. B. Locey 1975-1 4 Butte ca 50 yds W of Hicks Lane and 100 yds E of Hwy 99, 3 mi N of Chico 59 Comment
  UCD119626  Amsinckia intermedia R. R. Kehlor 1951-4-14 29 Butte Sierra Nevada, 6.25 miles E of Oroville - Mt. Ida Road. 48 Comment
  CHSC60964  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1609202  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  CHSC51349  Anaphalis margaritacea Vernon Oswald 1990-9-11 4450 Butte About 1.5 miles south-southeast of Brush Creek. 960 Comment
  CAS-BOT-BC137826  Andropogon glomeratus var. pumilus M. S. Taylor 1977-11-12 1532 Butte On north side of Upper Bidwell Park Road, Chico. 213 Comment
  UCD39909  Andropogon virginicus Elden F. Azevedo, Farm Advisor 1952-10-8 s.n. Butte Oroville. Comment
  CHSC103174  Andropogon virginicus var. virginicus Lowell Ahart 2009-11-19 16552 Butte On the east side of Big Chico Creek, southwest of a 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
  CHSC38118  Andropogon virginicus var. virginicus R. L. Ondricek-Fallscheer 1982-10-30 163 Butte At sw tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 146 Comment
  CHSC43259  Andropogon virginicus var. virginicus Lowell Ahart 1987-10-22 5926 Butte About 1/2 mile west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles south-west of Oroville. 38 Comment
  CHSC1961  Angelica californica R. M. Staley 1952-7-16 Butte Honey Run. 121 Comment
  UC1246763  Angelica californica A. S. Barclay, R. D. Barbee and K. E. Blum 1962-6-20 1198 Butte 2 mi s of Cohasset (on road to Chico) 762 Comment
  CHSC60957  Anisocarpus madioides Lowell Ahart 1993-6-16 6971 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  JEPS108991  Anthemis cotula Lowell Ahart 2006-10-8 13427 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  UCD128971  Anthemis cotula L. Ahart 1982-4-29 3390 Butte Graylodge Wildlife Refuge. A little W of check-in station. Ca. 12 miles SW of Gridley. 35 Comment
  CDA34135  Anthriscus caucalis L. Ahart 2009-4-3 15521 Butte Chico: East of the Cedar grove Parking Area in Lower Bidwell Park. Comment
  SEINET10454730  Anthriscus caucalis Mary Susan Taylor 1982-4-28 Taylor 4378 Butte T17N R1E sec 15 & 16. Pennington quad. Along road loop around HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 54 ft. 16 Comment
  SEINET10547817  Antirrhinum cornutum Mary Susan Taylor 1983-1-17 Taylor 5217 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC25337  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-12 30 Butte 100 m from the intersection of Highway 70 and Pulga Raod. 426 Comment
  CHSC43144  Antirrhinum vexillo-calyculatum subsp. intermedium R. A. Schlising; J. D. Jokerst 1980-7-2 3815 Butte 0.74 mi SW of Butte Creek. NE of Forest Ranch. 658 Comment
  CHSC12932  Aphyllon epigalium subsp. epigalium T. A. Salinas 1972-2-5 2 Butte Found ca. 400 yds. w of Big Butte Creek. 385 Comment
  CHSC12928  Aphyllon purpureum K. D. Cox 1974-4-15 187 Butte Horse Trough, about 2 mi. N of Chico Airport, on Cohasset Rd. On roadside bank. Comment
  CHSC104  Apocynum androsaemifolium 1954-5-30 Butte Kimshew Falls near Rag Dump 5, out from Stirling. 1097 Comment
  CHSC40376  Apocynum cannabinum Lowell Ahart 1985-6-30 5072 Butte Along edge of the Oroville Bangor Highway, 100 yards east of the intersection with Wyandotte Miners Ranch Road, about 7 miles south-east of Oroville. 274 Comment
  CHSC1433  Aquilegia formosa var. truncata R. Carter 1964-6-15 128 Butte Feather R. Canyon, 3/4 mi. E of Pulga turnoff where Bear Ranch Rd. le ves Hwy. 40A. 609 Comment
  CHSC52686  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 357 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1633 Comment
  CHSC52689  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 365 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1682 Comment
  RSA4434  Arabis platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CAS-BOT-BC167246  Aralia californica Clarence R. Quick 1952-7-1 52 -116 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC110  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC100970  Arbutus menziesii Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15489 Butte East side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC39785  Arbutus menziesii Eloise Gallatin 1935-5-19 Butte Lake Madrone. 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
  UC42907  Arceuthobium campylopodum E. B. Copeland 1930-7-28 Butte Jonesville 1550 Comment
  UCD52113  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51088 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52120  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51096 Butte In Upper Sonoran Zone on volanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  UCD52240  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51562 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11989222  Arctostaphylos manzanita J. T. Howell 1975-1 51104 Butte about 2 mi from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC38865  Arctostaphylos manzanita subsp. manzanita Frances Brown 1935-2-11 s.n. Butte Durham Comment
  CAS-BOT-BC38867  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte At Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC38873  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15487 Butte 1 mile west of the Spring House on the Neal Road to Paradise. Comment
  JEPS119572  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SD60287  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC725335  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 mi below Paradise (on Pentz-Magalia Rd) Comment
  UC725908  Arctostaphylos mewukka A. A. Heller 1942-1-18 16351 Butte two mi below De Sabla Comment
  UC726979  Arctostaphylos mewukka A. A. Heller 1942-1-4 16347 Butte Pentz-Magalia Rd 4 mi below Paradise Comment
  CAS-BOT-BC45572  Arctostaphylos nevadensis A. A. Heller 1915-6-26 12034 Butte Summit of Sierra Nevada above Jonesville. 2133 Comment
  CHSC99660  Arctostaphylos patula subsp. patula H. Koeth 2007-5-5 Butte Butte Meadows, Cherry Hill campground. UTM 10 628108E 4440095N. 1326 Comment
  SEINET11989235  Arctostaphylos truei J. T. Howell 1975-1 51112 Butte Skyway & Montana Drive, Paradise 610 Comment
  CAS-BOT-BC44589  Arctostaphylos viscida subsp. mariposa Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 35 Butte 2 mi. N of Paradise off Skyway Blvd., 0.2 mi. N on Coutolene Rd. 701 Comment
  CAS-BOT-BC48282  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-2 s.n. Butte Pater Ahart Ranch, Honcut 48 Comment
  UCD52826  Arctostaphylos viscida subsp. viscida J. I. Mallory 1968-7-1 296 Butte 4 miles south of Brush Creek Ranger Station, Plumas National Forest. 640 Comment
  CHSC35047  Arenaria kingii var. glabrescens R. A. Schlising 1981-6-28 4115 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek at white Table Mountain. 1828 Comment
  CHSC41391  Arenaria kingii var. glabrescens Lowell Ahart 1986-7-2 5344 Butte West of the dirt road, about 2 miles north-east of Bald Mountain, south of Jones Meadow, about 6 1/2 miles north-east of Stirling City. 1767 Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  CHSC26759  Aristida oligantha M. S. Taylor; M. Hayes 1977-8-16 1434 Butte On the s side of Pentz Rd. Ca. 1.2 mi e of jct of Pentz Rd and Hwy 99, ca. 15 mi s of Chico. 60 Comment
  SEINET10512738  Aristida oligantha Mary Susan Taylor 1977-8-16 Taylor 1434 Butte On S side of Pentz Rd, near culvert in natural drainage, ca 1.2 e of jct of Pentz Rd & Hwy 99, ca 15 mi S of Chico. 61 Comment
  CAS-BOT-BC400418  Aristolochia californica Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 26 Butte E of Chico off of Skyway Blvd, 1.0 mi. north on Honey -Run Rd. 381 Comment
  CHSC109079  Aristolochia californica Lowell Ahart 2012-4-19 17885 Butte On the northwest side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 1/2 mile east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  UCD170558  Aristolochia californica D. O. Burge 2017-8-25 2286 Butte Butte Creek. 220 Comment
  SEINET10971030  Aristolochia californica Mary Susan Taylor 1980-2-17 Taylor 2359 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UC1564791  Arnica chamissonis V. Oswald and L. Ahart 1989-7-27 3822 Butte 3.3 mi se, Humbug Rd at Butte Creek House Jonesville; Butte Creek 1767 Comment
  CHSC26658  Arnica dealbata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1501 Butte On n side of the Skyway, in Inskip. 1615 Comment
  CHSC103160  Artemisia douglasiana Lowell Ahart 2009-11-19 16554 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC51249  Artemisia douglasiana Lowell Ahart 1990-10-3 6625 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of lake Oroville, about 1/4 mile north east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  JEPS120016  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC400630  Asarum hartwegii Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC51847  Asarum lemmonii L. P. Janeway 1987-6-26 2293 Butte At Rag Dump. 1173 Comment
  CHSC117  Asclepias cordifolia M. Harless 1930-5-18 Butte Paradise. 548 Comment
  UC600678  Asclepias cordifolia E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  SEINET10870123  Asclepias cordifolia Mary Susan Taylor 1980-5-31 Taylor 2775 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  SEINET10903038  Asclepias cordifolia Lowell Ahart 1985-6-17 Ahart 5063 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  UCD121285  Asclepias cordifolia M. Vincent 1963-6-8 405 Butte Honey Run Road. Comment
  RSA755343  Asclepias fascicularis L. Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2.5 miles north and 3/4 miles east of Honcut, about 12 air miles south of Oroville. 32 Comment
  CHSC2221  Asparagus officinalis D. Smith 1935-5-23 Butte Vacant lot in Chico. 57 Comment
  CHSC3983  Aspidotis densa E. P. Parreno 1967-3-30 Butte Only plant seen close to the water's edge of Lindo Channel ca. 350 yards upstream fron the Mun. Golf Course, Chico. Comment
  CHSC40387  Aspidotis densa Lowell Ahart 1985-5-15 4981 Butte About 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC94270  Aspidotis densa Lowell Ahart 2006-7-16 12965 Butte Deep road cut, west of the open mudflow area, on the south side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC65620  Aster radulinus L. P. Janeway 1995-9-10 4922 Butte Watson Ridge about 1 mi east of its western end. Overlooking Fall River. 1097 Comment
  CHSC65992  Astragalus tener var. ferrisiae Vernon H. Oswald 1996-5-9 7547 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 the S paddock of Tract 7, Sanctuary II. 32 Comment
  JEPS102548  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
  CHSC69041  Asyneuma prenanthoides Lowell Ahart 1997-8-1 7793 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1371 Comment
  SEINET10532288  Athyrium filix-femina var. californicum Mary Susan Taylor 1981-4-16 Taylor 3545 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
  CHSC42512  Athysanus pusillus Lowell Ahart 1987-5-22 5665 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC476  Athysanus pusillus G. Spurlock 1935-4-7 Butte Covered bridge on Butte Creek. Comment
  JEPS107360  Athysanus pusillus Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  SEINET10901943  Avena barbata Mary Susan Taylor 1980-3-1 Taylor 2327 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
  CHSC92513  Avena fatua Lowell Ahart 2005-12-11 12515 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
  JEPS107374  Avena fatua Lowell Ahart 2005-4-14 11706 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
  CHSC27  Azolla filiculoides M. Anthony 1962-2-10 Butte Oxbow Lake inlet, e. of Sacramento River. 36 Comment
  CHSC36303  Azolla filiculoides M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4370 Butte Ca. 1/2 mi s of HQ on Graylodge Waterfowl Refuge, ca. 12 mi sw of Gridley. 19 Comment
  SEINET11718749  Azolla filiculoides L. Ahart, Jokerst, J. 1985-1 4850 Butte S of Hwy 70, at intersection of Hwy 70 & 191, Valle Grassland 100 Comment
  CHSC66661  Baccharis douglasii Vernon H. Oswald 1996-7-17 8069 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
  CHSC279  Baccharis salicifolia B. Richardson 1929-4-18 Butte Near Chico. Comment
  UCD123526  Bacopa repens J. M. Tucker 1953-8-28 2684 Butte Biggs Rice Experiment Station. Comment
  CHSC46297  Bacopa rotundifolia Vernon Oswald 1989-5-30 3791 Butte Sheep Camp Ditch on the w side of the n end of Cana-Pine Creek Rd near Vandergrift Lake. 54 Comment
  CAS-BOT-BC106558  Balsamorhiza deltoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  UC1594585  Balsamorhiza deltoidea Vernon H. Oswald and Lowell Ahart 1992-3-24 4891 Butte .2 mi n of, (n side Thermalito Diversion Pool, along 1st stream w of spillway) Burma Rd.; Lake Oroville Recreation Area 76 Comment
  CHSC9132  Berberis aquifolium var. dictyota C. A. Stafford 1970-4-26 23 Butte On E. side of Ponderosa Way, ca. 6 miles N. from jct of Cohasset Hwy. and Ponderosa Way. Lassen Game Refuge vic. 1127 Comment
  SBBG17205  Berberis aquifolium var. repens M. Vincent 1961-3-31 12 Butte 0.5 mi W of Harrison Rd in open woods Comment
  SFV1330  Berberis aquifolium var. repens M. L. Vincent 1961-3-31 12 Butte Sierra Nevada Paradise. 0.5 miles west of Harrison and Stearns roads. 530 Comment
  CAS-BOT-BC75549  Berberis dictyota Lowell Ahart 1988-3-27 5942 Butte Along Poe Power House Road, about 0.1 mile north of the bridge across the North Fork of the Feather River. 350 Comment
  CHSC46016  Bergia texana Lowell Ahart 1974-7-31 570 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC43271  Bidens cernua Lowell Ahart 1987-8-30 5862 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
  CHSC116138  Bidens frondosa Lowell Ahart 2015-10-26 20590 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  RSA724879  Bidens frondosa L. Ahart 2006-9-11 13274 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CHSC100915  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1998-7-16 4609 Butte Northern Butte County, south of Humbug Summit, at upper reaches of Willow Creek. 1950 Comment
  NY31001  Blennosperma californicum R. M. Austin s.n. Butte Mesa, near Little Chico Creek Comment
  SEINET10474476  Blennosperma nanum Mary Susan Taylor 1973-1 Taylor 62 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10904923  Blennosperma nanum Mary Susan Taylor 1974-3-5 Taylor 77 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CAS-BOT-BC100692  Blennosperma nanum var. nanum Lowell Ahart 1975-4-2 s.n. Butte Honcut 45 Comment
  CHSC39541  Boechera arcuata Lowell Ahart 1983-5-28 4017 Butte Found growing at the over-look to Feather Falls, about 5 1/2 miles north of the town of Feather Falls. 600 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
  UC600709  Boechera platysperma H. F. Copeland 1932-8-16 Butte Jonesville 1500 Comment
  SEINET10453128  Boisduvalia densiflora Mary Susan Taylor 1975-6-25 Taylor 800 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
  CHSC110354  Bolboschoenus fluviatilis B. Castro; Margie Graham 2006-8-24 1601 Butte Sacramento Valley Ca 1 mi W of Hwy 99 and 3 mi NE of Richvale, just S of the Western Canal siphon in Cherokee Canal. On E side of canal ca 100 ft S of dirt road crossing the canal. 35 Comment
  CHSC66684  Bolboschoenus maritimus Vernon H. Oswald; Lowell Ahart 1996-7-22 8095 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 1.1, Sanctuary II. 33 Comment
  CHSC36962  Boykinia major M. S. Taylor 1982-8-16 5018 Butte S side of jct of Big Kimshew Creek and Bald Mt-Ramsy Bar Rd (52513), ca. 4 air mi ne of Stirling City. 1432 Comment
  CDA15362  Boykinia occidentalis G. F. Hrusa 1997-5-29 13805 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC103158  Brachypodium distachyon Lowell Ahart 2009-6-3 15821 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  CHSC107902  Brachypodium distachyon L. P. Janeway 2011-6-29 10411 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
  JEPS115997  Brachypodium distachyon Lowell Ahart 2009-6-3 15821 Butte About 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CAS-BOT-BC36722  Brassica rapa Lowell Ahart 1986-11-7 5423 Butte East of the Feather River, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC106323  Brickellia californica John Thomas Howell 1961-9-22 36744 Butte Bank of Feather River, Oroville - Sierra Nevada 53 Comment
  CHSC52485  Briza maxima R. L. Ondricek 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. 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
  SEINET11672243  Briza minor Unknown 1978-1 10 Butte ca 12 mi N of Chico on CA 99 at Broyles Rd 67 Comment
  CAS-BOT-BC482211  Brodiaea californica subsp. californica David D. Keck 1933-5-30 2410 Butte 1 mile west of Richardson Springs Comment
  CHSC88078  Brodiaea californica var. californica R. D. Fischer 2004-6-6 163 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). At stream crossing on Big Chico Creek, 300 ft n. of gated property line of Bidwell Park. Off of Chico Canyon Road (name on older maps), e. side of creek. 213 Comment
  CHSC2071  Brodiaea coronaria V. Holt 1960-5-7 Butte Oroville Road. 79 Comment
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Jun 17 2014
  CHSC84255  Brodiaea elegans subsp. elegans Lowell Ahart 2003-5-26 10215 Butte On dredge tailings, on the west side of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  SEINET223331  Brodiaea minor Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3270 Butte Peter Ahart Ranch about 2.5 miles north-northeast of Honcut between Oroville and Marysville 30 Comment
  UC143034  Brodiaea minor Mrs. R. M. Austin 1890-1 816 Butte e Chico Comment
  CHSC82407  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  CAS-BOT-BC149544  Bromus carinatus var. carinatus John Thomas Howell 1951-6-26 27527 Butte Sierra Nevada. Near Pulga. 411 Comment
  CHSC88253  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC93875  Bromus carinatus var. carinatus Lowell Ahart 2006-6-9 12643 Butte Along the north side of the service road to Bardees Bar along the North Fork of the Feather River, about 70 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  JEPS103548  Bromus carinatus var. carinatus Lowell Ahart 2002-6-21 9736 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
  SEINET10662690  Bromus carinatus var. carinatus Lowell Ahart 2007-5-29 Ahart 13943 Butte T21N, R6E, Section 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trailhead which is 3/10 mi E of Bean Creek Road, about 2 miles (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  UCD58345  Bromus catharticus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  CAS-BOT-BC155944  Bromus commutatus Lowell Ahart 1988-5-30 6031 Butte About 1/12 mile north of the bridge across the North Fork of the bridge across the North Fork of the Feather River, along Poe Power House Road, about 2 miles southeast of Jarbo Gap. 335 Comment
  CAS-BOT-BC155463  Bromus hordeaceus John Thomas Howell 1967-6-22 42631 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC104810  Bromus hordeaceus Lowell Ahart 2010-6-12 16797 Butte Along the south side of a small stream, about 150 yards east of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  CHSC42141  Bromus japonicus Lowell Ahart 1979-6-9 1932 Butte East of Kunkle Creek, south-east of Paradise. 457 Comment
  CHSC86854  Bromus laevipes L. P. Janeway; John Hunt 2003-5-22 7793 Butte Northern Sierra Nevada Foothills. Northeast-facing slope between Lime Saddle Campground and West Branch Feather River arm of Lake Oroville. 287 Comment
  SBBG115912  Bromus laevipes J. T. Howell 1962-6-15 37495 Butte Magalia 731 Comment
  CHSC110137  Bromus madritensis subsp. rubens L. P. Janeway 2012-4-29 10808 A Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.4 km west of the powerlines. 136 Comment
  CHSC96857  Bromus orcuttianus Lowell Ahart 2007-5-29 13944 Butte On the south side of the Dome Trail head, trail leads to the Middle Fork of the Feather River, about 100 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
  CAS-BOT-BC161616  Bromus sterilis John Thomas Howell 1973-7-9 49695 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  CHSC49523  Bromus suksdorfii Vernon Oswald; Lowell Ahart 1987-8-5 3183 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  CHSC42861  Bromus tectorum Lowell Ahart 1987-5-6 5552 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
  CHSC50388  Bromus vulgaris Vernon Oswald 1990-6-1 4276 Butte Butte Creek Trail, ca. 2 miles north-northwest of Lake De Sabla. Near the second intermittent streamlet south of the trailhead on Ponderosa Way (Doe Mill Rd). 609 Comment
  RSA718082  Bromus vulgaris L. Ahart 2006-7-16 12975 Butte about 220 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. West edge of a large wet meadow and bog, 1570 Comment
  CHSC38627  Calandrinia ciliata Vernon Oswald 1983-2-26 103 Butte Upper Bidwell Park, Chico, along the edge of the North Rim Trail at the level of Horseshoe Lake. 140 Comment
  SEINET10499790  Callitriche Mary Susan Taylor 1976-3-30 Taylor 1044 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  CHSC12181  Callitriche heterophylla var. bolanderi Lowell Ahart 1973-3-26 186 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC29106  Calochortus albus M. S. Taylor; J. D. Jokerst 1980-4-27 2567 Butte On s side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 137 Comment
  CHSC3353  Calochortus albus Robert L. Smith 1966-4-20 19 Butte Paradise, 5 miles SE of post office. Comment
  CAS-BOT-BC487510  Calochortus albus John Thomas Howell; Gordon H. True 1967-5-9 42230 Butte Southeast side of North Fork of Feather River at Pulga Bridge Comment
  POM225869  Calochortus albus J. H. Morrison 1932-5-30 SN Butte Durham. Comment
  CHSC2231  Calochortus coeruleus R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  CAS-BOT-BC487815  Calochortus coeruleus Lowell Ahart 1973-5-28 s.n. Butte South and East of La Porte 1371 Comment
  HSC38030  Calochortus luteus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2492 Butte Beside Skyway, 2 mi. W of Paradise Comment
  SEINET12046805  Calochortus luteus Unknown 1978-1 19 Butte ca 0.5 mi W of jct of Pentz Rd & Pentz Magalia Hwy, ca 1.5 mi SW of West Branch of Feather River 183 Comment
  CHSC115498  Calochortus monophyllus L. P. Janeway 2015-3-16 11637 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CAS-BOT-BC492596  Calochortus monophyllus A. A. Heller 1914-4-16 11295 Butte Chico-Centerville road, 8 miles from Chico Comment
  SEINET10469602  Calochortus monophyllus Lowell Ahart 1985-3-22 Ahart 4849 Butte About 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville. Comment
  RSA369111  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  RSA53633  Calochortus nudus Marion Ownbey, Gerald B. Ownbey 1946-6-24 2939 Butte Grassy meadow along Butte Creek, just below Jonesville Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  CHSC67733  Calochortus tolmiei James D. Jokerst 1979-4-6 198 Butte 400 ft S of corners of sections. T. C. Hunt property SE of Pulga Rd. Comment
  CHSC67734  Calochortus tolmiei James D. Jokerst 1979-5-7 223 Butte Cohasset Hwy. 5.0 mi N of Chico Municipal Airport. 365 Comment
  CHSC98583  Calochortus tolmiei L. P. Janeway; B. Castro 2007-5-6 8968 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  SEINET12048526  Calochortus tolmiei Unknown 1978-1 12 Butte 4 yd E of Hwy 70, 15.6 mi NE of Hwy 149, in Feather River Canyon 549 Comment
  CHSC46838  Caltha leptosepala var. biflora Kirsten Tarp 1983-7-31 319 Butte Near Humbug Rd. between Butte Creek House and Snag Lake. At border of meadow. 1804 Comment
  RSA255535  Calycadenia ciliosa Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico Comment
  HSC66225  Calycadenia fremontii Hayes, Warner 1977-10-23 145 Butte In a small drainage intersecting Cohasset Hwy., approx. 2.3 mi. S of the Chico Airport 35 Comment
  RSA300139  Calycadenia hispida L. Ahart 1976-11-12 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC34157  Calycadenia multiglandulosa Lowell Ahart 1981-8-31 3052 Butte S of the jct of Black Bart Rd and Oroville-Forbestown Rd, ca. 10 mi W of Forbestown. 750 Comment
  UCD129710  Calycadenia multiglandulosa Lowell Ahart 1972-10-4 144 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC288  Calycadenia oppositifolia M. Roberson 1956-5-28 Butte Near Paradise along Skyway. 548 Comment
  CHSC75901  Calycadenia oppositifolia G. F. Hrusa; T. D. Wilfred 1997-7-3 13989 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 725 Comment
  RSA32902  Calycadenia oppositifolia A. A. Heller 1929-5-15 s.n. Butte Richardson Springs Road Comment
  CHSC84034  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, about 2 miles north and 1 3/8 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  CHSC30945  Calycadenia truncata L. Ahart 1980-7-4 2449 Butte On a steep hillside ca. 1/2 mi SE of Hurleton. 600 Comment
  CHSC98900  Calycadenia truncata L. P. Janeway 2007-10-20 9219 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south edge of the top of North Rim overlooking Bear Hole. 291 Comment
  POM253181  Calycadenia truncata subsp. truncata A. A. Heller 1938-6-14 15152 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CAS-BOT-BC90918  Calycanthus occidentalis Sally Bianco 1995-9-23 1029 Butte Concow area, along unnamed creek that parallels Yellowwood Road. 793 Comment
  CHSC107384  Calycanthus occidentalis Blake McSorley 2010-5-11 Butte Bidwell Park at Christer Ave. Found along Big Chico Creek. 71 Comment
  CHSC174  Calycanthus occidentalis Agnes Riker 1897-5-1 Butte Comment
  UC176138  Calycanthus occidentalis A. A. Heller 1913-6-6 10782 Butte 8 mi n Oroville; Table Mountain 182 Comment
  UCD100460  Calyptridium umbellatum T. I. Storer 1961-6-6 s.n. Butte State Highway 32, 23 miles east of Chico. 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
  RSA0104578  Calystegia atriplicifolia subsp. buttensis Sandra M. Namoff 2012-7-26 66 Butte NE of Chico, 2.4 air miles NE of Forest Ranch, 0.63 [miles] from Hwy 32 on Headwater Road. 951 Comment
  RSA718168  Calystegia malacophylla L. Ahart 2006-7-11 12942 Butte 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1401 Comment
  UCD126161  Calystegia occidentalis E. B. Copeland 1931-7-4 674 Butte Jonesville. 1550 Comment
  RSA718780  Calystegia occidentalis subsp. occidentalis L. P. Janeway 2006-7-9 8806 Butte 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  CHSC27311  Calystegia occidentalis subsp. occidentalis t. B. Devine 1976-7-31 344 Butte Beside Humbug Road ca 2 mi S of Nimshaw. 548 Comment
  SEINET10472624  Camassia leichtlinii subsp. suksdorfii Mary Susan Taylor 1978-6-24 Taylor 1661 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  RSA37526  Camissonia tanacetifolia Milo S. Baker 1936-6-12 8286 Butte Highway 97, Butte Creek Comment
  POM59345  Campanula prenanthoides Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10463077  Campanula prenanthoides Mary Susan Taylor 1980-9-12 Taylor 3336 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  SEINET10939041  Campanula scouleri Hall Hall 9798 Butte NEAR BUTTE MEADOES, ON FLAT IN SHADE OF CEDAR & PINE 1280 Comment
  JEPS120952  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  CHSC4049  Cardamine californica J. W. Cherry 1967-3-27 Butte Ca. 3 ft. from edge of Big Chico Creek, 100 yds. e of end of Bidwell Park road. 176 Comment
  CHSC33183  Cardamine oligosperma R. E. Preston 1981-4-8 51 Butte In a field on n side of Sacramento Ave. ca. 8 km w of Chico. 40 Comment
  CDA34716  Carduus pycnocephalus L. Ahart 2010-6-1 16749 Butte Along Centennial Avenue, about 100 yards east of Chico Canyon Road, on the south side of Big Chico Creek, Upper Bidwell Park, Chico. Comment
  CHSC54088  Carduus pycnocephalus Vernon H. Oswald; Lowell Ahart 1991-5-13 4587 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 137 Comment
  SBBG128736  Carex L. Ahart 2012-6-14 18190 Butte lawn, on S side of path, SW of CARD Community Center, Lower Bidwell Park, 62 Comment
  CDA13290  Carex amplifolia G. F. Hrusa, T. D. Wilfred 1996-7-9 13138 Butte Plumas National Forest; Dense colony on shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CAS-BOT-BC17808  Carex amplifolia L. P. Janeway 1988-6-25 2874 Butte Creek along Bull Hill Road 2.2 miles from the Skyway. 1508 Comment
  CHSC53715  Carex angustata L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3089 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  POM183139  Carex aurea H. F. Copeland 1929-6-11 1243 Butte Jonesville. 1524 Comment
  UC478553  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville 1500 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCD140157  Carex barbarae L. P. Janeway 1986-9-11 1842 Butte city of Chico, campus of CSU, Chico. Big Chico Creek, SE of Butte Hall. 59 Comment
  CHSC52269  Carex bolanderi L. P. Janeway 1987-5-20 2086 Butte Canyon of North Fork Feather River; seep along Hwy 70, 0.3 mi N of Arch Rock Tunnel. 472 Comment
  UC1586586  Carex bolanderi Vernon H. Oswald and Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail between Canyon Drive and Oroville Blvd. East (opposite the spillway, on the edge of Palermo Canal); Lake Oroville Recreation Area, Dan Beebe Trail 170 Comment
  UCD140164  Carex bolanderi L. P. Janeway; B. Castro, Pat Kelly 1987-5-10 2032 Butte Butte Creek Trail, above Butte Creek ca. 1 mile south of the Doe Mill Road bridge. 609 Comment
  CHSC52853  Carex densa L. P. Janeway 1987-5-20 2057 Butte Near Gold Flat and Hodap Creek; jct of Lunt Road and Nelson Bar Road. 457 Comment
  JEPS121405  Carex divulsa subsp. divulsa P. F. Zika & L. Janeway 2012-5-17 25873 Butte near Camelia Way bridge, N bank of Big Chico Creek, alluvium over andesite, Chico Comment
  UCR7845  Carex dudleyi Marilyn Malin 1968-4-19 245 Butte W side of Cherokee Road, c. 2 mi south of Cherokee, & 100 yards east of the Cherokee Graveyard 405 Comment
  CHSC41302  Carex echinata subsp. echinata S. C. Morey 1983-7-22 538 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC53709  Carex feta L. P. Janeway 1987-5-20 2077 Butte Soggy drainage along Hwy 70 2.1 mi NE of Pulga bridge, near Heinz Creek. 457 Comment
  UCR7833  Carex feta Marilyn Malin 1968-4-19 246 Butte W side of Cherokee Road, c. 2 mi south of Cherokee, & 100 yards east of the Cherokee Graveyard 405 Comment
  CHSC104784  Carex fracta L. P. Janeway 2010-6-19 10027 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  HSC87072  Carex fracta L. P. Janeway 1987-6-27 2337 Butte Canyon of Little Kimshew Creek, along road 0.9 mi. N of the Concow Rd. 1509 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
  SEINET7559369 Image available Carex fracta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11398 Butte Ca 7.5 mi NE of community of Butte Meadows, along road to Humboldt Summit, ca 0.8 road mi S of (downslope from) Humboldt Summit. 1914 Comment
  CHSC100876  Carex geyeri L. P. Janeway; Linus Gog 2008-7-18 9435 Butte High Cascade Range. Along Humbug Summit Road, above the Cornelia Lott Sank memorial Spring (which feeds West Branch Feather River). Comment
  CAS-BOT-BC146661  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown 838 Comment
  CAS-BOT-BC28193  Carex hirtissima James D. Jokerst 1982-6-4 1591 Butte Headwaters of Concow Creek ca 1.0 mi S of Flea Valley. 1097 Comment
  CHSC102853  Carex hirtissima Peter F. Zika 2009-6-17 24516 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC42828  Carex hirtissima L. P. Janeway 1987-5-10 2045 Butte Mdw at jct of Skyway and Doe Mill Rd/Humbug Rd, just N of Da Sabla Reservoir. 838 Comment
  CHSC84734  Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1116 Comment
  RSA88708  Carex hirtissima L. S. Rose 1937-6-10 37375 Butte Butte County: Forbestown. 838 Comment
  RSA0119041  Carex integra Lowell Ahart 2014-7-7 19592 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  RSA774141  Carex integra L. Ahart 2010-9-21 17218 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  SEINET12649502 Image available Carex inversa Peter F. Zika 2010-1 24827 Butte 65 Comment
  JEPS117661  Carex luzulina var. ablata L. Ahart 2010-9-21 17219 Butte Near a poor camp, 30 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC111389  Carex multicaulis Lowell Ahart 2012-4-30 17923 Butte Near a small drainage, north of the meadow, southwest of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 268 Comment
  CHSC51511  Carex nebrascensis L. P. Janeway 1987-5-10 2044 Butte Meadow at junction of Skyway and Doe Mill/Humbug Road (just N of DeSabla Reservoir). 838 Comment
  HSC86840  Carex nervina L. P. Janeway, Robert A. Schlising, B. Castro 1988-7-30 3146 Butte Coon Hollow, along dirt road 0.9 mi. SE of W Branch Feather River 1646 Comment
  SEINET7569421 Image available Carex nudata L. P. Janeway 2003-5-11 7783 Butte Stirling City 7.5' quad. High Cascade Range, along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte), just upstream of the diversion structure. 588 Comment
  CHSC45051  Carex pachystachya Vernon Oswald 1987-5-7 2378 Butte Butte Creek Reserve on the n side of Butte Creek, e of the Skyway. 74 Comment
  CHSC84733  Carex pachystachya L. P. Janeway; John Hunt 2003-5-8 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  CHSC51429  Carex pendula L. P. Janeway 1989-12-1 3653 Butte Along Comanche Creek (Edgar Slough) behind the office of USFS Tree Improvement Center. 68 Comment
  CHSC44950  Carex praegracilis L. P. Janeway 1988-7-2 2943 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  JEPS104628  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  CHSC41300  Carex simulata S. C. Morey 1983-7-22 536 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  SEINET7575671 Image available Carex specifica Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11385 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  UC202968  Carex subfusca H. M. Hall 1914-7-25 9781 Butte Jonesville Sierra Nevada Mts. (n Butte Co.); Jonesville, northern Butte Co., Sierra Nevada Mts. 1554 Comment
  CAS-BOT-BC115307  Carex utriculata A. A. Heller 1914-6-22 11494 Butte Chico Meadows. 1219 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10751319  Carex vesicaria var. vesicaria Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3039 Butte T26N, R5E, Jonesville quad (15'). SE1/4 of sec. 20. Vernal pool next to Humbug Rd 0.8 mi W of Butte Creek House. Large rocky pool surrounded by lodgepole pines and montane chaparral. This is the main species filing the drying vernal pool. 1806 Comment
  CHSC12164  Castilleja J. Grove 1973-4-24 77 Butte Collected 1 mi W of Paradise. Comment
  CHSC46408  Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  JEPS117245  Castilleja affinis subsp. affinis Lowell Ahart 2010-5-7 16630 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico 277 Comment
  CDA13281  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1996-7-9 13129 Butte Plumas National Forest; W side above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC114979  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20036 Butte On the southwest side of Rim Road, about 3 miles (air) north of Jarbo Gap, about 17-1/2 miles (air) north of Oroville. 907 Comment
  JEPS123823  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 -A Butte About 1/4 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. Comment
  JEPS15597  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4723 Butte 0.5 mi below Nimshew (on Nimshew (Humbug) Road, along sides of Butte Canyon); Butte Canyon 701 Comment
  SEINET10549341  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-6-19 Taylor 3957 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  JEPS104367  Castilleja attenuata Lowell Ahart 2003-4-10 10057 Butte Near the e side of the ''sunken area,'' ca 150 yd w of the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 320 Comment
  CDA41336  Castilleja attenuata T. C. Fuller 1958-4-15 3804 Butte 1 mile south of Oroville. 0 Comment
  UCSB63618  Castilleja attenuata Holloway, Steve 1986-4-12 Butte 100 m of Chico Municipal Airport; Richardson Springs Quadrangle; NE 1/4; Sec. 27, T23N, R1E 102 Comment
  CHSC28689  Castilleja campestris subsp. campestris M. S. Taylor 1979-5-6 1999 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90174  Castilleja exserta Carol A. Bordin 1983-4-15 17 Butte 0.3 mi s of Chester Orland (Hwy 32) exit and Little Chico Creek on Hwy 99 s and ca. 0.2 mi east of Tenneco West Almond Processing Plant, East 20th street exit. Comment
  UCSB63719  Castilleja exserta subsp. exserta Jensen, Julie 1987-4-10 Butte 2 mi from Cherokee Rd; Table Mountain; Oroville quad.,7.5', T 20 N, R 4 E, NW 1/4 Sec. 18 335 Comment
  CHSC43767  Castilleja lacera Vernon Oswald 1985-5-20 1767 Butte Robinson Mill Rd. 1.8 mi s of Forbestown Rd. 609 Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 320 Comment
  CHSC116954  Catalpa speciosa Matthew Forster 2013-5-7 Butte Lower Bidwell Park, found off of bike path, 30 meters south of the Hwy 99 overpass. 65 Comment
  UCR231508  Ceanothus Anna M. Hurlbutt 2009-8-7 025 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  POM196018  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville. 1550 Comment
  UC600529  Ceanothus cordulatus H. F. Copeland 1927-9-2 Butte Jonesville Comment
  UCD123472  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 815 e Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek, accessed via north-trending foot trail from 13411 Bean Flat Road, 1.0 road miles from Centerville Road on Bean Flat Road . 15.1 km 74 deg. (True) ENE of Chico. 243 Comment
  CAS-BOT-BC50776  Ceanothus integerrimus Lewis S. Rose 1968-6-12 68112 Butte Feather River Canyon - Pulga 487 Comment
  CAS-BOT-BC50781  Ceanothus integerrimus A. A. Heller 1928-4-30 14536 Butte Along the Neal Road about 3 miles below Paradise Comment
  CAS-BOT-BC47957  Ceanothus lemmonii Carl B. Wolf 1937-5-18 8726 Butte Northern Sierra Nevada - 5 mi. below Magalia on Oroville Road. 609 Comment
  CHSC28138  Ceanothus lemmonii J. D. Jokerst 1979-5-7 220 Butte Top of Cohasset Ridge (Tuscan Lava). 200 m. sw of Cohasset Hwy. 463 Comment
  SEINET13946050 Image available Ceanothus prostratus A. A. Heller 1915-1 11971 Butte Chico Meadows in the Sierra Nevada; 4000 ft alt. 1219 Comment
  CHSC27158  Celtis occidentalis M. MacArthur 1968-6-23 286 Butte Ca. 10 ft. SE of Big Chico Creek, opposite SW entrance to LS bld., Chico State College. 60 Comment
  CHSC110977  Celtis sinensis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18231 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  JEPS113265  Centaurea cyanus Lowell Ahart 2007-5-16 13893 Butte Between the road to Bear Ranch Creek and Highway 70, north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  JEPS115574  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
  CAS-BOT-BC272095  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CAS-BOT-BC284505  Centaurea solstitialis Forman T. McLean 1921-10-20 33 Butte Chico Comment
  JEPS46957  Centaurium muehlenbergii W. L. Jepson 1939-8-17 19454 Butte near Oroville; Feather River 45 Comment
  JEPS93837  Centaurium muehlenbergii Lowell Ahart 1998-7-1 8025 Butte about 7 air mi n of Oroville (about 100 yards s of a east west fence, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC105225  Centaurium venustum Lowell Ahart; John Dittes 2010-7-19 16908 Butte At the homestead, west of the poor dirt road, about 3.6 miles (air) southwest of Manton, about 3.6 miles (air) north of Highway 36 and Lane Valley Road intersection. 505 Comment
  JEPS94760  Centaurium venustum Lowell Ahart 1998-6-3 7969 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC46469  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3812 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), ca. 0.25 mi n of the s gate. 18 Comment
  CDA38803  Cephalanthus occidentalis L. Ahart 2012-7-5 18278 Butte On south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  CHSC113243  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CHSC93490  Cerastium glomeratum Lowell Ahart 2006-5-8 12593 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
  POM28570  Cercis occidentalis C. C. Bruce 1897-05 1815 Butte Little Chico. Comment
  SFV1802  Cercis occidentalis B. Fuller 1961-4-1 s. n. Butte Butte Creek Canyon. Honeyrun Road below Paradise. Comment
  SFV1803  Cercis occidentalis M. L. Vincent 1961-3-30 24 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  UC204721  Cercis occidentalis A. A. Heller 1914-3-12 11194 Butte e Chico; Canyon of Big Chico Creek 68 Comment
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Feb 17 2016
  CAS-BOT-BC276479  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  SEINET10475244  Chaenactis glabriuscula var. megacephala Mary Susan Taylor 1976-4-27 Taylor 1099 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  RSA451323  Chamaebatia foliolosa L. S. Rose 1937-6-10 37368 Butte Forbestown. 838 Comment
  SEINET9250421  Chamaesyce hooveri B. Crampton 1978-1 Butte Comment
  CHSC113527  Chamaesyce maculata Lowell Ahart 2014-9-23 19864 Butte South edge of the road, near the iron pole gate, parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC76416  Chamaesyce maculata Lowell Ahart 1999-10-28 8309 Butte On the west side of a large pond, along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles (air) southwest of Chico. 32 Comment
  JEPS29838  Chamaesyce ocellata Rimo Bacigalupi and L. R. Heckard 1962-6-1 8582 Butte 200 ft e junction of Paradise Rd and rd to Centerville 60 Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  UC1609291  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte 6 air mi ne Feather Falls (w of the bridge, along Fall River) 1036 Comment
  NY246351  Chamaesyce sulfurea A. A. Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, E of Chico Comment
  CAS-BOT-BC69448  Cheilanthes gracillima E. B. Copeland 1929-7-13 327 Butte Jonesville. 1700 Comment
  SEINET10529932  Cheilanthes siliquosa Mary Susan Taylor 1978-5-6 Taylor 1584 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC43256  Chenopodium album Lowell Ahart 1987-10-22 5923 Butte Along a drain ditch, along Oroville Chico Highway (149), 1/10 mile northwest of Highway 70. 76 Comment
  CDA7111  Chenopodium botrys L. Ahart 2006-10-8 13438 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. Comment
  CHSC34047  Chenopodium murale L. Ahart 1981-7-26 3002 Butte On sides of large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  RSA726435  Chenopodium pumilio L. Ahart 2007-11-3 14566 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CDA42932  Chenopodium strictum var. glaucophyllum L. Ahart 2012-9-28 18475 Butte On the east side of the path, north of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC58910  Chimaphila menziesii Lowell Ahart 1992-7-29 6893 Butte About 1 mile east of the Carr Mine, about 1/2 mile north-west of Lotts Lake. 1828 Comment
  UC600608  Chimaphila menziesii E. B. Copeland July, 1929 Butte along Butte Creek (Jonesville); Jonesville 1550 Comment
  UC455449  Chimaphila umbellata Miss Kate Conger 1907-1 Butte Bush Creek Comment
  CAS-BOT-BC184906  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
  JEPS50845  Chlorogalum angustifolium H-M. Beard 1967-6-26 65 .1217 Butte Comment
  CHSC38877  Chlorogalum pomeridianum var. pomeridianum Vernon Oswald 1983-6-20 726 Butte Upper Bidwell park, Chico, along Yahi Trail e of Brown's Hole. 198 Comment
  JEPS104397  Chondrilla juncea Lowell Ahart 2003-7-10 10372 Butte On the n slope of Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 296 Comment
  CHSC43863  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1988-4-4 3266 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the northeast part of the ranch. 60 Comment
  CHSC94048  Chorizanthe polygonoides var. polygonoides R. D. Fischer 2005-5-18 722 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail. 426 Comment
  CHSC21786  Chorizanthe stellulata Robert A. Schlising 1974-5-25 3133 Butte 9.9 mi NE jct Hwy 99 and Hwy 32 in Chico, along Hwy 32. Comment
  CAS-BOT-BC247537  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  SEINET10454841  Cicendia quadrangularis Mary Susan Taylor 1980-5-15 Taylor 2631 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC45659  Cirsium arvense Vernon Oswald 1987-7-29 3164 Butte 0.6 mi w of Coon Hollow Rd. on the dead-end spur road which parallels it on the south, ca. 2 mi (air) ne of Philbrook Reservoir. Roadside. 1783 Comment
  CHSC46719  Cirsium arvense R. A. Schlising; P. Broyles 1986-8-5 4499 Butte N part of county, NE of Snag Lake and W of Butte Creek House. Along Butte Creek. 1767 Comment
  SFV11411  Cirsium occidentale var. californicum M. L. Vincent 1963-6-11 425 Butte Roadside on Pentz Road. 5 miles south of Paradise. Comment
  CHSC39049  Cirsium occidentale var. candidissimum Lowell Ahart 1983-7-29 4242 Butte About 1 mi e of Milsap Bar, about 25 mi ne of Oroville. 750 Comment
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico Comment
  CHSC21139  Cirsium occidentale var. venustum M. S. Taylor 1975-6-30 821 Butte Ca. 500 yds w of Cohasset Hwy, Cohasset. Comment
  CHSC304  Cirsium occidentale var. venustum B. Richardson 1929-5-14 Butte Cohasset. 609 Comment
  CHSC9546  Cirsium occidentale var. venustum R. G. Bevers 1968-3-5 30 Butte Locally found 9 mi n of Chico on hwy. 32. On the w side of the rd. 100 ft. s of large turnoff overlooking the valley. Ca. 10 ft from the rd. 304 Comment
  UCD149987  Citrullus lanatus var. citroides E. L. 1971-9-7 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  UCD13205  Clarkia affinis Charles Martin 1986-4-26 13 Butte Sutter Buttes, canyon SE of North Butte. 182 Comment
  JEPS93841  Clarkia arcuata Lowell Ahart 1998-6-3 7976 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
  CHSC1096  Clarkia concinna subsp. concinna R. Carter 1964-6-12 119 Butte About 5 mi. NW of Forbestown on old Forbestown-Feather Falls Rd. 548 Comment
  JEPS108862  Clarkia concinna subsp. concinna Lowell Ahart 2006-5-19 12636 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  CHSC88059  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1.4 miles s. of this junction. Close to rd. on uphill side. For the next 3 miles. 643 Comment
  JEPS93981  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch (n. side of the knob on the w. side of the rd., easily seen from hwy. when traveling s. from Forest Ranch) 573 Comment
  UC107852  Clarkia gracilis subsp. albicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC37427  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1982-7-28 4358 Butte SE of Pulga and S of Coyote Gap Station on road crossing Last Chance Creek. Roadside. 777 Comment
  CHSC89898  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  CHSC111319  Clarkia mildrediae subsp. mildrediae Samantha Mackey Hillaire 2008-5-22 1256 A Butte Plumas National Forest. Roadcuts under powerlines. 731 Comment
  CHSC65575  Clarkia mosquinii L. P. Janeway 1995-7-7 4835 Butte Along Hwy 70 1.9 mi northeast of Jarbo Gap. Southeast-facing road cutbank through mid-slope of North Fork Feather River canyon. 649 Comment
  CHSC1107  Clarkia purpurea R. Carter 1964-5-27 104 Butte 8 mi E of Oroville at 6120 Woodleaf Star Rt. on W side of driveway. 121 Comment
  CAS-BOT-BC163657  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 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
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  SD122549  Clarkia purpurea subsp. viminea Lowell & Peter Ahart 1984-5-28 4650 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road ca. 2 miles East of Old Yankee Hill, ca. 16 miles NE of Oroville. 449 Comment
  CHSC38567  Clarkia rhomboidea Vernon Oswald 1983-5-21 518 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  CHSC59113  Clarkia rhomboidea L. P. Janeway 1991-6-1 3978 Butte West-facing cut-bank of Dark Canyon Road 0.6 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 542 Comment
  CHSC59114  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill. 512 Comment
  CHSC60837  Clarkia rhomboidea Vernon H. Oswald; Lowell Ahart 1993-6-22 5554 Butte Powellton Rd., 2.1 mi N of Doe Mill Rd. (Ponderosa Way), N of De Sabla. 963 Comment
  SEINET3260809 Image available Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville. 1650 Comment
  RSA144792  Clarkia rhomboidea G. I. Stage, R. Thorp 1959-6-21 59 -121 Butte 11.9 miles northwest of Chico on Highway 32 Comment
  CAS-BOT-BC165438  Clarkia unguiculata Lowell Ahart 1989-5-31 6333 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Croville 304 Comment
  CHSC93511  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Rd., where a main tributary joins Battle Creek. 1500 Comment
  UC1595882  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Butte Creek Jonesville (Jonesville, on Humboldt Road at the junction with Colby Mtn Lookout Rd, where the main tributary joins Butte Creek) 1500 Comment
  RSA0059521  Claytonia palustris E. B. Copeland 1929-7-28 s.n. Butte Jonesville. 1500 Comment
  SEINET10572701  Claytonia parviflora Mary Susan Taylor 1981-3-24 Taylor 3440 A Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC1381  Claytonia parviflora subsp. parviflora E. Dolittle 1929-3-15 Butte Bidwell Park. 60 Comment
  CHSC90643  Claytonia parviflora subsp. parviflora Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11651 Butte Big Chico Creek Ecological Reserve. South of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  CHSC36180  Claytonia perfoliata subsp. perfoliata J. S. Adams 1980-4-25 17 Butte On s side of Bidwell Park Rd, between One Mile and Five Mile, Lower Bidwell Park, Chico. 67 Comment
  SEINET10830265  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3432 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC4714  Claytonia rubra subsp. rubra R. Carter 1966-4-28 383 Butte Found in Feather R. Canyon ca. 1.5 mi. SW of Cresta Power House on E side Hwy. 70; growing in loose granite on bank above road. 670 Comment
  CHSC42491  Clematis lasiantha Lowell Ahart 1987-5-9 5587 Butte Near a wash, 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
  SEINET10476023  Clematis lasiantha Lowell Ahart 1988-11-27 Ahart 5946 Butte Chapparral Clematis. On dry red soil, along Poe Power House Road, about 1/2 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap, Butte County, California. 425 Comment
  SEINET12088731  Clematis lasiantha Unknown 1978-1 17 Butte ca 8 mi NE of Chico Municipal Airport and .5 mi NW of Rock Creek, 12 mi NE of Chico Comment
  CHSC66443  Clematis ligusticifolia Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  RSA325883  Clematis ligusticifolia L. Ahart, P. Ahart 1983-7-24 4215 Butte S32 at the Forbestown Reservoir, 5 miles NE of Forbestown, Yellow Pine Forest. 450 Comment
  SEINET10469618  Clintonia uniflora Mary Susan Taylor 1982-6-24 Taylor 4745 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
  CHSC114647  Collinsia greenei Vivian Paarker 1993-6-16 17 -21 Butte Yolla Bolly Ranger District. Serpentine ridge above and north of Snake Lake, north of FS road 28N10. 1260 Comment
  SBBG17350  Collinsia heterophylla M. Vincent 1962-4-20 214 Butte Hwy 40, Feather River Cyn Rd, 6 mi NE of Oroville near site of Feather River Dam Comment
  CHSC31823  Collinsia sparsiflora L. Ahart 1979-4-28 1851 Butte Peter Ahart Ranch, Honcut. Along banks of North Honcut Creek. 50 Comment
  UCD123666  Collinsia sparsiflora Michael A. Vincent; Ethan H. Freid 1998-4-6 8129 Butte Table Mountain. Comment
  SEINET10548309  Collinsia sparsiflora var. bruceae Lowell Ahart 1984-4-3 Ahart 4537 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
  UC1594549  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte about 2 air mi n of Oroville (on n side of the dirt road, on n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UC175549  Collinsia tinctoria A. A. Heller 1913-5-28 10768 Butte Table Mountain 8 mi n of Oroville 182 Comment
  CHSC10580  Collomia heterophylla Lowell Ahart 1970-5-19 Butte Near Stirling City. 914 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  CHSC43740  Comandra umbellata subsp. californica Vernon Oswald 1984-6-22 1160 Butte Upper Bidwell Park, Chico, on Yahi Trail near Chico Creek w of Brown's Hole. 182 Comment
  JEPS115533  Comandra umbellata subsp. californica Lowell Ahart 2009-5-15 15704 Butte On the east side of Big Chico Creek, about 3 yards west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC76939  Convolvulus arvensis Margie Collins 1894-5-1 Butte Chico. Comment
  RSA755749  Convolvulus arvensis L. 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 air mile west of Highway 32, about 10 miles northeast of Chico. 270 Comment
  NY643133  Convolvulus arvensis A. A. Heller 1916-9-9 12657 Butte Near Durham Comment
  CAS-BOT-BC288956  Conyza floribunda John Thomas Howell 1959-9-20 34632 Butte Eastern outskirts of Oroville 60 Comment
  POM168516  Corallorhiza maculata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET12331907  Cordylanthus pilosus subsp. bolanderi Unknown 1985-1 5153 Butte along Forbestown Ditch, about 2.5 mi NE of Forbestown 869 Comment
  CDA41358  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC48986  Cordylanthus tenuis subsp. viscidus Vernon Oswald 1983-8-17 977 Butte Humbolt Rd., 2.1 mi ne of Lomo. 1383 Comment
  UC1562382  Cordylanthus tenuis subsp. viscidus Vernon Oswald and Lowell Ahart 1990-7-31 4415 Butte ca 2 mi ne Concow (Jeep Trail between Concow Rd and Rim Rd) 899 Comment
  CHSC27211  Cornus florida var. rubra P. Moyer 1972-5-1 224 Butte CSUC Campus. N side Chico Creek, e side entrance Gus Magnolis Bridge. 60 Comment
  CHSC29109  Cornus nuttallii M. S. Taylor; J. D. Jokerst 1980-4-27 2559 Butte Along Middle Butte Creek off of Little Butte Creek, ca. 1 1/2 mi se of Nimshew. 609 Comment
  CHSC7079  Cornus nuttallii Mike Prather 1969-4-13 Butte 2.5 m on Feather Falls Trail, 22 mi e of Oroville. Comment
  CHSC61640  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte On the west side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC600763  Cornus sericea subsp. sericea H. F. Copeland 1931-6-11 Butte by Scotch John Creek in Butte Creek Canyon Jonesville; Butte Creek Canyon, Scotch John Creek Comment
  SEINET10506963  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5143 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CDA24604  Corydalis caseana T. C. Fuller 1962-7-12 9204 Butte 0.2 mile east of Jonesville. 0 Comment
  CAS-BOT-BC401859  Corydalis caseana subsp. caseana H. M. Hall 1914-7-28 9796 Butte Butte Creek, northern Butte County 1500 Comment
  CHSC36526  Cotula coronopifolia L. Ahart 1982-7-29 3450 Butte Field n of the Peter Ahart Ranch, ca. 2.5 mi n and 1 1/4 mi e of Honcut. 50 Comment
  RSA517004  Cotula coronopifolia Barbara Ertter, Lowell Ahart 1986-4-13 5903 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  CAS-BOT-BC291332  Cotula coronopifolia Lowell Ahart 1982-5-29 3450 Butte North of the Peter Ahart Ranch about 2 1/2 miles north and 1 1/4 miles east of Honcut 50 Comment
  CHSC80522  Crassula aquatica Lowell Ahart 2001-4-15 8729 Butte A deep ditch, 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
  JEPS103505  Crassula aquatica Lowell Ahart 2002-4-14 9480 Butte Area between the Railroad and the Midway Road, 50 yards S of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS120654  Crassula aquatica Lowell Ahart 2013-10-26 19213 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  UC1594614  Crassula connata Lowell Ahart 1992-4-7 6742 Butte e side of Biggs Princeton Rd. and w. side of Southern Pacific R.R. in Biggs 30 Comment
  RSA636050  Crassula connata var. erectoides Michael A. Vincent, Ethan H. Freid 1998-4-6 8126 Butte Table Mountain Comment
  CHSC46743  Crassula tillaea Lowell Ahart 1974-4-11 382 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC38642  Crataegus monogyna Vernon Oswald 1983-4-6 287 Butte Upper Bidwell Park, Chico, on the s edge of Upper Park Rd. 0.3 mi e of the end of the pavement. 94 Comment
  JEPS120077  Crataegus monogyna Lowell Ahart 2012-5-17 18084 Butte On both sides of the horse trail, between the paved park road and the poor dirt road, between Table 21 and Larch, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC290528  Crepis capillaris Lowell Ahart 1988-6-29 6092 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  POM219379  Crepis occidentalis subsp. pumila H. F. Copeland 1931-6-11 1532 Butte Jonesville; near Butte Creek Meadows 1829 Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC33291  Croton setiger S. Posner 1972-9-24 2 Butte Edge of Skyway between Hwy. 99 and Humbug Rd. Comment
  CHSC29115  Crucianella angustifolia M. S. Taylor; J. D. Jokerst, L. Ahart 1979-4-6 1994 A Butte Abundant in Valley Grassland and along Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 30 Comment
  CHSC62495  Crucianella angustifolia B. Castro 1987-5-18 96 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 445 Comment
  JEPS108961  Crypsis alopecuroides Lowell Ahart 2006-9-11 13302 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
  RSA0106564  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 Butte Northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  RSA725028  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  CAS-BOT-BC190094  Crypsis schoenoides Lowell Ahart 1983-10-15 3892 Butte Sierra Nevada. North Honcut Creek, about 1 mile north and 2.75 miles east of Honcut. 50 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
  SEINET10518382  Crypsis schoenoides Lowell Ahart 1982-1 Ahart 3672 Butte On dry bare soil on bottom of dry duck pond, ca. 1/4 mi se of HQ, Wildlife Refuge, ca. 13 mi se of Gridley. Not common and inconspicuous. Comment
  SEINET10518390  Crypsis vaginiflora A. Arthur Heller 1919-8-13 Heller s.n. Butte Rice fields between Nelson & Richvale in moist adobe. Comment
  CHSC86138  Cryptantha affinis John Dittes; Josephine Guardino 2002-6-21 617 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.7 air-mile north by northwest of Feather Falls Overlook, ca. 5.4 air-miles west by southwest of Cascade. 1133 Comment
  SD122567  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-6-10 4708 Butte Ca. 2 miles southwest of Forbestown Diversion Dam, northeast of Forbestown 700 Comment
  SEINET10497259  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4724 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
  CHSC46752  Cryptantha flaccida Lowell Ahart 1980-5-12 2245 Butte On dredger piles along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC71165  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC179503  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  SEINET12329571  Cryptantha flaccida L. Ahart, Ahart, P. 1984-1 4649 Butte on a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca 2 mi E of Old Yankee Hill.. 450 Comment
  UC78586  Cryptantha flaccida Mrs. R. M. Austin Apr 1896 Butte Little Chico Canyon Comment
  CHSC35060  Cryptantha intermedia R. A. Schlising 1981-6-13 4081 Butte E part of county, along Milsap Bar Road, 2.7 miles S of its junction with Bald Rock Road near Brush Creek. 975 Comment
  UC726521  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  CDA40502  Cryptantha torreyana T. C. Fuller 1962-7-12 9169 a Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CAS-BOT-BC68067  Cryptogramma acrostichoides Lowell Ahart; Vernon Oswald 1987-8-5 3179 Butte Near Humboldt Peak 2151 Comment
  CAS-BOT-BC85569  Cupressus macnabiana M. S. Taylor 1981-4-8 3503 Butte Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines off logging [loggine] rd., 883 Comment
  SEINET10531469  Cupressus macnabiana Mary Susan Taylor 1975-9-19 Taylor 913 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  CHSC100503  Cupressus sempervirens Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15417 Butte In the center of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  RSA312628  Cuscuta californica H. L. Mason, Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge, Butte Sink Comment
  RSA718398  Cuscuta californica L. Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  CHSC48360  Cuscuta californica var. californica V. Oswald 1988-5-25 3339 Butte Just nw of intersection of Pennington Rd. and Rutherford Rd. at Gray Lodge Waterfowl Management Area. 21 Comment
  SEINET10837188  Cuscuta howelliana Mary Susan Taylor 1979-5-6 Taylor 2008 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CHSC28503  Cymopterus terebinthinus var. californicus M. S. Taylor; J. Jokerst 1979-7-21 2160 Butte On Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC117432  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte On the bottom of a deep wash, about 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 east of Honcut, about 12 miles (air) south of Oroville. 29 Comment
  POM72524  Cynoglossum grande Mrs. R. M. Austin 1883-04 25 Butte Butte County Comment
  CHSC47985  Cynoglossum occidentale Vernon Oswald 1985-6-20 1847 Butte Near Jones Creek on Rd. 26N27, ca. 1 mi ne of Jonesville. 1630 Comment
  CHSC109631  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Ave, Lower Bidwell Park, Chico. 74 Comment
  SEINET7072728  Cynosurus echinatus A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles north of Oroville on Table Mountain Boulevard. UTM Zone 10, 620857mE, 4378681mN. Coordinate datum: NAD 27.) Comment
  UCD60178  Cynosurus echinatus Beecher Crampton 1965-6-17 7384 Butte 1/2 mile west Rackerby Store, La Porte Road. 426 Comment
  CHSC68378  Cyperus bipartitus L. P. Janeway; C. A. Janeway 1986-10-4 1903 Butte Gravel bar along Butte Creek about 2 1/2 mi east of The Skyway. 45 Comment
  CHSC6630  Cyperus eragrostis M. MacArthur 1968-6-18 212 Butte Along SE edge of Big Chico Creek, opposite LS bld., Chico State College campus. 60 Comment
  JEPS94691  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET191614  Cyperus eragrostis Lewis S. Rose 1939-6-11 39277 Butte 6 miles E of Honcut. 137 Comment
  CHSC66856  Cyperus erythrorhizos Vernon H. Oswald 1996-9-30 8291 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Llano Seco Rancho between 7 Mile Lane and the Sacramento River. Northern Sacramento Valley. Margin of Angel Slough on the W side of Tract 4.1, Sanctuary I. [Label says 'T20N R01W S15 SE1/4 of NW1/4']. 30 Comment
  CHSC76405  Cyperus fuscus Lowell Ahart; Vernon H. Oswald 1999-10-3 8287 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
  UCD139947  Cyperus iria Whitney Brim-DeForest 2013-8-1 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  UCD141197  Cyperus niger John Thomas Howell 1959-9-20 34639 Butte eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC113845  Cyperus niger var. capitatus John Thomas Howell 1959-9-20 34639 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC113534  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 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
  CAS-BOT-BC114075  Cyperus squarrosus Lowell Ahart 1983-9-17 4431 Butte Ca 1/8 mi NE of Kunkle Res., south of Paradise. 600 Comment
  CHSC109749  Cyperus strigosus Lowell Ahart 2012-10-20 18501 Butte About 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC68417  Cyperus strigosus L. P. Janeway 1986-10-19 1932 Butte Along Butte Creek on west side of Hwy 99. 60 Comment
  UC399278  Cystopteris fragilis Mrs. R. M. Austin May 1896 244 Butte bluffs, Butte Creek Butte Creek Comment
  SEINET10535614  Cystopteris fragilis Mary Susan Taylor 1978-6-24 Taylor 1659 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
  SEINET10833641  Cystopteris fragilis Mary Susan Taylor 1981-5-13 Taylor 3694 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  SEINET10932440  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2357 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UCD169810  Danthonia californica Lowell Ahart 2010-9-21 17230 Butte About 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. On the north side of a poor dirt road. 1899 Comment
  UC600745  Danthonia californica var. americana H. F. Copeland 1932-7-17 Butte Jonesville; across from cabin Comment
  CHSC51951  Danthonia unispicata T. B. Devine 1980-4-28 725 Butte On Cherokee Rd ca 3.4 mi S of its jct with Hwy 70. Roadside. Comment
  CHSC44830  Darmera peltata Steven Triano 1987-4-19 45 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico, growing among rocks in the West Branch Butte Creek. 853 Comment
  NY41067  Darmera peltata S. Bianco 1995-9-17 1027 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  CHSC76008  Datura stramonium var. tatula Lowell Ahart; Vernon H. Oswald 1999-8-13 8134 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC42578  Daucus carota Vernon Oswald 1985-5-20 1764 Butte Lower Hgoncut Rd. 0.1 mi e of N. Honcut Creek. Comment
  CHSC24644  Delphinium gracilentum S. Deaton 1976-4-23 34 Butte 1 3/4 mi n of Feather Falls parking lot and 20 ft down s slope of Falls trail. 853 Comment
  CAS-BOT-BC8797  Delphinium gracilentum f. versicolor Lowell Ahart 1980-5-25 2337 Butte Near Old Forbestown 1000 Comment
  JEPS104466  Delphinium hansenii subsp. hansenii Lowell Ahart 2003-5-27 10225 Butte On the e side of the dirt road, at Parking Area P, Upper Bidwell Park, ca 5 mi e of Manzanita Avenue, Chico. 228 Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  CHSC39537  Delphinium hesperium Lowell Ahart 1983-6-21 4079 Butte Found along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CAS-BOT-BC10106  Delphinium hesperium subsp. pallescens Mrs. H. C. Cantelow 1940-5-10 4255 Butte 8.5 mi. SW of Oroville along Hwy. 24 Comment
  CHSC101301  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  SEINET12099564  Delphinium nudicaule Unknown n d s.n. Butte Chico Comment
  POM193379  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville. 1550 Comment
  CHSC56780  Delphinium patens R. A. Schlising; R. Banchero 1981-5-20 4064 Butte Lumpkin Ridge at eastern border of county. 1280 Comment
  CAS-BOT-BC121615  Delphinium patens subsp. patens A. A. Heller 1938-4-14 15036 Butte Slope on Table Mountain, near the upper end of a ravine Comment
  CHSC52120  Delphinium variegatum R. E. Alumbaugh 1984-4-26 1 Butte 6.4 mi e of hwy 99 and ca. 50 yds n of Skyway, 8.5 mi e of Chico. 387 Comment
  CHSC52503  Delphinium variegatum V. F. Pappas 1975-4-26 19 Butte 8.5 mi s of Chico on Highway 99E at Oroville Junction. 59 Comment
  CHSC52504  Delphinium variegatum Jose Romero 1983-4-20 11 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  CHSC53303  Delphinium variegatum J. V. Serrao II 1971-5-2 153 Butte In meadows throughout ne side of lower Bidwell Rd, ca. 100 yds w of Horseshoe Lake, Bidwell Park. 121 Comment
  RSA517003  Delphinium variegatum Barbara J. Ertter 1986-4-13 5886 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  CAS-BOT-BC16981  Delphinium variegatum subsp. variegatum A. A. Heller 1902-5-13 5520 Butte Near Clear Creek Comment
  CHSC38165  Delphinium variegatum subsp. variegatum Vernon Oswald 1983-4-6 283 Butte Upper Bidwell Park, Chico, ca. 100 ft s of the n park boundary and ca. 1800 ft e of the junction of Wildwood Ave. and Upper Park Rd. 88 Comment
  CAS-BOT-BC16976  Delphinium variegatum subsp. variegatum Ira L. Wiggins 1925-3-25 1414 Butte Three and one half miles east of Durham on State Land Colony highway. Comment
  CHSC29239  Dendromecon rigida M. S. Taylor 1980-5-8 2592 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi. e of Hwy 32. 853 Comment
  SEINET10448606  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1975-5-9 Taylor 570 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  CHSC9126  Deschampsia cespitosa Willis Ball 1970-3-10 69 Butte Along the Skyway to Paradise, about 5 miles after the turn off to Paradise from hwy 99E. On the right side of the road. 182 Comment
  POM218974  Deschampsia cespitosa E. B. Copeland 1931-7-15 s.n. Butte Jonesville. 1750 Comment
  SEINET10507361  Deschampsia cespitosa Mary Susan Taylor 1978-6-24 Taylor 1663 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  CAS-BOT-BC192655  Deschampsia danthonioides Lowell Ahart 1982-6-15 3562 Butte Ca. 1.5 mi. E of Camp 18, ca. 8 mi E of Feather Falls 1000 Comment
  SEINET10524182  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  SEINET10524190  Deschampsia danthonioides D. McClain 1969-4-18 McClain 44 Butte 400 yds. n. from gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 488 Comment
  SEINET10966580  Deschampsia danthonioides A. Arthur Heller 1914-5-13 Heller 11399 Butte Between Durham & Nelson. Comment
  CAS-BOT-BC201740  Deschampsia elongata Lowell Ahart 1977-6-16 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek Comment
  CHSC105682  Deschampsia elongata Lowell Ahart 2010-9-21 17232 -A Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CHSC39046  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte About 15 mi ne of Oroville, just off of Bloomer Hill Road about 0.5 mi w of the Oroville-Quincy Highway. Along a poor road, near a branch of Canyon Creek. 400 Comment
  CAS-BOT-BC388454  Dianthus armeria John Thomas Howell 1962-6-15 37511 Butte Magalia 731 Comment
  UC854935  Dicentra formosa A. A. Heller 1915-6-11 11965 Butte Chico Meadow; Sierra Nevada 1219 Comment
  CHSC19648  Dicentra nevadensis K. R. Stern 1964-5-16 Butte Chico. Comment
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  CAS-BOT-BC209183  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 miles west of Pulga - Sierra Nevada 365 Comment
  CHSC9271  Dichelostemma capitatum subsp. capitatum D. C. Burns 1971-3-17 101 Butte Abundant 5 yds. N side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 Comment
  CHSC109154  Dichelostemma congestum Lowell Ahart 2012-5-12 18029 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8-1/2 miles (air) northeast of Chico 237 Comment
  RSA256665  Dichelostemma multiflorum Kitsy Kelly 1974-4-20 16 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  SEINET12044751  Dichelostemma multiflorum J. H. Morrison 1932-1 s.n. Butte Durham Comment
  UC143046  Dichelostemma multiflorum Mrs. R. M. Austin Apr 1896 37 Butte e of Chico Comment
  SEINET3885710  Dichelostemma pulchellum James L. Reveal 1988-6-4 7003 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge.; 0 518 Comment
  JEPS95157  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte about 1/4 mi w of Ponderosa Dam (about 20 yards n of the South Fork of the Feather River and on w side of Sucker Creek, strand of Lake Oroville); Sucker Creek 274 Comment
  RSA703067  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte in a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  CHSC111111  Diospyros virginiana Lowell Ahart 2012-5-17 18077 Butte North of Big Chico Creek, south of the horse trail, southwest of the southwest corner of the old walnut orchard, about 3/5 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC103934  Diplacus angustatus Lowell Ahart 2010-5-16 16693 Butte Bottom of a small drainage, just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CHSC44776  Diplacus angustatus R. Banchero 1980-4-9 102 Butte Along Cherokee Rd ca 1.0 mi N of its jct with Oregon rd, 2.3 mi S of the town Cherokee. 426 Comment
  CAS-BOT-BC150506  Diplacus grandiflorus Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dam Power Station on Feather River, along U. S. Highway Alternate 40 Comment
  CHSC101317  Diplacus grandiflorus Lowell Ahart 2009-4-22 15602 Butte West side of the Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC100801  Diplacus jepsonii R. A. Schlising; L. Janeway 1988-7-1 4548 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CHSC44671  Diplacus kelloggii R. Banchero 1980-4-26 135 Butte Along the Cohasset Hwy 5.8 mi NE of its jct with Keefer Rd, 0.4 mi SW of the town of Cohasset. 426 Comment
  CAS-BOT-BC153210  Diplacus kelloggii Lowell Ahart 1969-4-8 s.n. Butte Swedes Flat Road, near Bangor 1200 Comment
  CHSC78271  Diplacus layneae Lowell Ahart 2000-6-27 8510 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CAS-BOT-BC154036  Diplacus torreyi A. A. Heller 1928-6-20 14616 Butte At Butte Meadows Comment
  CHSC34720  Diplacus torreyi M. S. Taylor; R. Bacigalupi 1981-4-27 3555 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC44751  Diplacus torreyi R, Banchero 1980-6-13 224 Butte Little Bald Rock, ca 1.0 mi E of Bald rock Rd. 1036 Comment
  CHSC44809  Diplacus torreyi R. Banchero 1980-6-6 200 Butte Along Bald Rock Rd 1.5 mi S of the upper jct with Hwy 162. 999 Comment
  CHSC2141  Distichlis spicata H. Silberman; D. Isaac 1949-9-19 Butte Grey Lodge State Game Refuge. Comment
  CHSC106282  Dittrichia graveolens L. P. Janeway 2010-11-17 10220 Butte Sacramento Valley. Oroville; in gravel parking area at east sie of Feather River Ranger District office (875 Mitchell Ave.). 59 Comment
  CHSC97711  Dittrichia graveolens Lowell Ahart 2007-10-30 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  JEPS115045  Dittrichia graveolens Lowell Ahart 2007-10-30 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  RSA4135  Dodecatheon alpinum subsp. majus E. B. Copeland 1930-6-26 s.n. Butte Jonesville. 1550 Comment
  CHSC3995  Dodecatheon clevelandii subsp. patulum Wayne O. Baum 1967-3-17 3 Butte In triangle area, on e. side of Cohasset Rd. and ca. 312 mi n. of Chico. 60 Comment
  CHSC88972  Dodecatheon clevelandii subsp. patulum Christine Hantelman 2000-2-23 9 Butte Baccala ranch 1/4 mi east past end of Wookey Road. 114 Comment
  UC195373  Dodecatheon clevelandii subsp. patulum A. A. Heller 1914-2-16 11178 Butte 8 mi n Oroville; n of Oroville Comment
  CHSC114964  Dodecatheon hendersonii Lowell Ahart 2015-3-14 19947 Butte On the south side of the poor old dirt road, Beatson Hollow, about 3/5 of a mile northwest of Cherokee Road, about 7 miles (air) north of Oroville. 309 Comment
  CHSC14047  Dodecatheon hendersonii J. F. Goodwin 1974-3-11 184 Butte Ca. .8 mi se on Oregon Gulch Rd from its intersection with Cherokee Rd, Table Mt, n of Oroville. Comment
  CHSC32731  Dodecatheon hendersonii M. S. Taylor 1981-3-12 3397 Butte Along s side of 20N53.2, in open disturbed areas, ca. 1 mi sw of Feather Falls community. 883 Comment
  CHSC33355  Dodecatheon hendersonii Steven Azevedo 1980-3-23 2 Butte Corner of Pentz-Magalia Hwy. and Limesaddle Road, 3 mi. sw of Paradise. 304 Comment
  CHSC67291  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1953 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Adjacent to #1952. Comment
  SEINET10973444  Dodecatheon hendersonii Mary Susan Taylor 1979-3-20 Taylor 1944 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  RSA758601  Dopatrium junceum Peter Fritsch, Boni Cruz 2005-8-9 1787 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. 41 Comment
  UCD123715  Dopatrium junceum John M. Tucker 1953-8-28 2679 Butte Biggs Rice Experiment Station. Comment
  POM59018  Downingia bicornuta A. A. Heller, H. E. Brown 1902-5-3 5448 Butte Near Nelson Comment
  POM68177  Downingia bicornuta Edward Palmer 1892-6-7 2083 Butte Near Chico. Comment
  CDA42327  Downingia insignis Vernon H. Oswald & Lowell Ahart 1998-6-11 9217 Butte Butte Valley National Grassland near the junction of Meiss Lake-Sams Neck Rd. and Hwy. 97 ca. 5 mi. north of Macdoel. Comment
  UCD80194  Downingia ornatissima CNPS SN Foothill Team 2005-4-13 SNFN 0120 Butte City of Chico, Chico Municipal Airport, 20 m N of fence across SE border of accessible area, about half the distance down paved road. 62 Comment
  CHSC7081  Downingia ornatissima var. ornatissima H. Alger 1969-4-25 21 Butte 0.7 mi e of Chico, 15 yds s of Skyway. 60 Comment
  UC131877  Downingia ornatissima var. ornatissima Mrs. R. M. Austin 1896-1 66 Butte Comment
  CAS-BOT-BC41349  Draba verna Lowell Ahart 1984-2-27 4497 Butte Honcut. Peter Ahart Ranch. About 12 miles south of Oroville. 50 Comment
  UCD115553  Draba verna L. Ahart 1973-11-21 149 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile N and 2.5 miles E of Honcut, about 12 miles S of Oroville. 39 Comment
  CHSC48331  Draba verna var. verna Vernon Oswald 1987-3-26 2296 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek near the entry gate. 71 Comment
  CHSC687  Draperia systyla R. Carter 1964-5-16 90 Butte Feather R. Canyon, S side Hwy. 40 A along old road ca. 300 yds. E of Bear Cr. 731 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  CHSC28723  Drosera rotundifolia M. Banchero; R. Schlising 1979-9-2 36 Butte Wet meadow sloping to Butte Creek, 8.1 mi NE jct H ... Field redacted by CHSC, contact the data manager for more information Comment
  UCD123996  Drosera rotundifolia Barry Rice 2011-8-21 BR 110809 Butte Along Colby Creek. Population upstream, extending into Tehama County. 1490 Comment
  CHSC102981  Dryopteris arguta Lowell Ahart 2009-8-20 16288 Butte Below the rim, along a small drainage, west of the Guardian Rock Trail, about 30 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
  CHSC3410  Dryopteris arguta Alice L. Stoll 1966-3-7 49 Butte Honey Run Grade near Paradise. Comment
  RSA715710  Dryopteris arguta L. Ahart 2005-1-20 11473 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  UC123311  Dryopteris arguta Mrs. R. M. Austin May 1883 79 Butte Big Chico Comment
  CHSC115450  Dryopteris filix-mas M. Sutton; C. Yasuda 2013-3-19 9 Butte Feather Falls Trail. 1069 Comment
  JEPS119500  Duchesnea indica var. indica Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17819 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CAS-BOT-BC428073  Dudleya cymosa subsp. cymosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC31235  Dysphania ambrosioides M. S. Taylor 1980-10-6 3358 Butte N side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC108179  Dysphania botrys L. P. Janeway 2011-8-18 10663 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. 912 Comment
  UCD98719  Dysphania botrys H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles S of Oroville. Comment
  CHSC112660  Echinochloa colona Lowell Ahart 2013-10-12 19106 Butte On the east side of Palermo Honcut Highway, about 20 yards south of Palermo Road, Palermo. 51 Comment
  CHSC99647  Echinochloa colona H. Koeth 2007-5-5 Butte End of Santa Clara Ave. off Rose Ave., Chico. UTM 10 609663E 4406233N. 57 Comment
  CHSC28867  Echinochloa crus-galli J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 429 Butte Top of North Table Mt, ca 100 m n of the intersection of east edge of Mt and Cherokee Rd. Comment
  JEPS124347  Echinochloa crus-galli Lowell Ahart 2015-10-26 20602 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  UCD60819  Echinochloa crus-galli P. B. Kennedy 9-10 Aug 1921 Butte Butte County. Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  CAS-BOT-BC291138  Eclipta prostrata Lowell Ahart 1981-9-26 3203 Butte Along the Sacramento River, ca. 6 mi. W of Chico 40 Comment
  CHSC94489  Elaeagnus angustifolia Lowell Ahart; Mike G. Womack 2006-8-29 13239 Butte About 20 yards east of a large canal, about 100 yards north of the Headquarters, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 20 Comment
  CHSC115323  Elatine Lowell Ahart 2015-4-24 20072 Butte On the west side of the dirt road, about 300 yards northeast of Parking Lot 10, about 2 miles east of Pennington Road, Gray Lodge Wildlife Area, about 3 1/2 miles (air) southwest of Gridley. 22 Comment
  JEPS122236  Elatine ambigua Lowell Ahart 2014-9-28 19881 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. Comment
  CHSC112424  Elatine californica Lowell Ahart 2013-6-5 18723 A Butte About 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  CHSC113233  Elatine californica Lowell Ahart 2014-4-30 19420 Butte About 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC114970  Elatine californica Lowell Ahart 2015-3-31 19984 Butte Bottom of a large duck field, about 200 yards north of Parking Lot 12, on the north side of the dirst road, about 1/8 mile south of Rutherford Road, Gray Lodge Wildlife Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC45273  Elatine rubella Vernon H. Oswald 1988-12-13 3724 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  SEINET13709377  Eleocharis acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8711 Butte Rice Exp. Station NW of Biggs, Hamilton Rd. 1/8 Mi. E Riceton Rd. (T19B, R2E, S 35, se, Sw) 100 Ft. 30 Comment
  SEINET7583520 Image available Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville. 1550 Comment
  JEPS110397  Eleocharis bolanderi Lowell Ahart 2006-8-15 13181 Butte Bog, near the center of a large open meadow with bogs, about 70 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
  UCD19372  Eleocharis engelmannii E. Dean; with J. Ditomaso and E. Healy 2001-8-20 863 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CAS-BOT-BC112791  Eleocharis macrostachya Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS95984  Eleocharis obtusa Lowell Ahart 1999-10-28 8304 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
  CDA2610  Eleocharis pachycarpa L. Ahart 2000-8-3 8676 Butte Southeast of a large pond, about 100 yards south of the Feather River, west of the break in the levee, about 1/2 mile (air) west of Pacific Heights Road, Oroville Wildlife Area, about 3 1/3 miles (air) southwest of Oroville. Comment
  CHSC37108  Eleocharis pachycarpa L. Ahart 1982-10-15 3887 Butte Sand bar along edges of North Honcut Creek, ca. 1 mi n and 2.7 mi e of Honcut. 50 Comment
  CHSC66683  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart 1996-7-22 8092 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of Tract 3.1, Sanctuary II. 32 Comment
  JEPS98287  Eleocharis quinqueflora Lowell Ahart 2000-5-10 8333 Butte 12 air miles SE of Oroville (N margin of a large wash, just W of the road crossing, Peter Ahart Ranch, 1 3/4 mi N and 1 1/4 mi E of Honcut) 36 Comment
  CDA38985  Eleocharis quinqueflora L. Ahart 2000-5-27 8405 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC111960  Eleocharis radicans Lowell Ahart 2012-6-5 18163 Butte On the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain , about 6 miles (air) north of Oroville. 273 Comment
  SEINET13711105  Eleocharis radicans Lowell William Ahart, Lowell William Ahart 2000-1 8698 Butte N of Large Pong on E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi. SW Chico Comment
  CHSC69737  Eleusine indica Lowell Ahart 1997-10-25 7946 Butte Lawn, at the Butte County Historical Society museum, Oroville. 60 Comment
  CAS-BOT-BC451515  Elodea canadensis Lowell Ahart 1988-5-30 6020 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UC398890  Elymus elymoides subsp. elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  CHSC32760  Elymus glaucus J. D. Jokerst 1981-4-10 1286 Butte Top of North Table Mt, W edge ca. 150 met N of Cherokee Rd where it intersects the W edge of Mt. 335 Comment
  CHSC4355  Elymus glaucus R. L. Smith 1966-5-25 8 Butte Butte Creek Canyon 3 mi e of Skyway. Comment
  CAS-BOT-BC203426  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  CHSC102158  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15794 Butte On dry soil, on the east side of Big Chico Creek, about 30 yards south of the gate, on both sides of north side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  CHSC82474  Elymus stebbinsii subsp. septentrionalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9738 Butte On the sides of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET10453190  Epilobium adenocaulon var. occidentale Mary Susan Taylor 1978-7-18 Taylor 1726 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  UCR219098  Epilobium brachycarpum George K. Helmkamp, E. A. Helmkamp 2009-9-5 15595 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  CAS-BOT-BC166846  Epilobium canum subsp. latifolium M. S. Taylor 1982-8-16 5017 Butte S side of jct of Big Kimshew Creek and Bald Mt - Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City 1432 Comment
  CHSC12075  Epilobium canum subsp. latifolium R. N. Bowman 1971-10-17 58 Butte Found growing on embankment along Hwy. 70, ca. 4.1 mi. w. of Bear Creek Falls, in the Feather River Canyon. 762 Comment
  UC1562487  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along creek below high water line of Lake Oroville (about 1/2 mi sw of the Enterprise Bridge across lake); McCabe Creek 228 Comment
  UC1563299  Epilobium ciliatum subsp. ciliatum unknown 1990-10-3 6623 Butte creek bottom below high water line of Lake Oroville (about 1/4 mi ne of the Canyon Creek Bridge across Lake Oroville); East Fork of Canyon Creek 259 Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  UC398938  Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-7-25 388 Butte Jonesville 1500 Comment
  UCD83699  Epilobium cleistogamum Christina Owens 2005-5-8 s. n. Butte Tuscan Preserve (Lower Wurlitzer Ranch), about 10 mi N of Chico. Comment
  CHSC21136  Epilobium densiflorum M. S. Taylor 1975-6-30 817 Butte In ditches, ca. 500 yds e of Cohasset Hwy, ca. 500 yds ne of Greenwood Store, Cohasset. 853 Comment
  CHSC39343  Epilobium densiflorum Lowell Ahart 1983-6-26 4149 Butte Found along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  SEINET12194592  Epilobium minutum Unknown 1985-1 4970 Butte N of Oroville, W of Lunt Road, ca 0.5 mi N of intersection of Lunt Rd. and Rt. 70, N of Yankee Hill 503 Comment
  CHSC44137  Epilobium obcordatum V. Oswald; L. Ahart 1988-7-29 3635 Butte Ca. 5 (air) mi se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  SEINET10453182  Epilobium paniculatum Mary Susan Taylor 1980-9-27 Taylor 3343 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  JEPS117208  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  JEPS116120  Equisetum arvense Lowell Ahart 2009-6-19 15938 Butte South of trail where people cross Big Chico Creek, 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-BC57856  Equisetum hyemale subsp. affine Lowell Ahart 1987-5-27 5713 Butte Along the N. Fork of the Feather River, near the Poe Power House, about 2 mi. se. of Jarbo Gap. 271 Comment
  CHSC33694  Equisetum laevigatum L. Ahart 1981-4-9 2752 Butte Near the edge of North Honcut Creek on Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. 50 Comment
  CHSC34163  Eragrostis cilianensis L. Ahart 1981-8-31 3063 Butte In a garden just a little n of the store in Honcut. 35 Comment
  JEPS95928  Eragrostis cilianensis Lowell Ahart 1999-8-22 8187 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SD122514  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, circa 1.5 miles North and 1.7 miles East of Honcut, circa 12 miles South of Oroville. 49 Comment
  UC1562282  Eragrostis cilianensis Lowell Ahart 1990-8-15 6583 Butte 0.5 mi sw Enterprise Bridge across Lake Oroville (near McCabe Creek, below the high water line); Lake Oroville 228 Comment
  CHSC112336  Eragrostis hypnoides Lowell Ahart 2013-7-9 18828 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CAS-BOT-BC278504  Eragrostis pilosa Lowell Ahart 1987-5-27 5697 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10507726  Eragrostis pilosa Mary Susan Taylor 1975-10-3 Taylor 941 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  SEINET11688373  Eragrostis pilosa Unknown 1985-1 5202 Butte end of Nelson Bar Road, about 1 mi S of Kunkle Reservoir, about 3 mi S of Paradise 302 Comment
  JEPS95983  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 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
  CHSC48247  Eremogone cliftonii Vernon Oswald 1985-4-21 1713 Butte Between the WPRR and North Branch of the Feather River sw of Mayaro. 457 Comment
  CHSC90971  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8377 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road about 1.2 km north of Mayaro and North Fork Feather River, 0.2 km east of Camp Creek. 747 Comment
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Jul 8 2014
  UC426988  Ericameria bloomeri E. B. Copeland 1930-8-26 493 Butte Jonesville 1550 Comment
  CHSC116148  Erigeron canadensis Lowell Ahart 2015-11-7 20614 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/8 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 240 Comment
  UC1586589  Erigeron foliosus var. hartwegii Vernon H. Oswald and Lowell Ahart 1991-5-31 4637 Butte along the roadbed on the s side Thermalito Diversion Pool (at the drainage on the ne side of Sycamore Hill); Lake Oroville State Recreation Area, Sycamore Hill 76 Comment
  SD5419  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 Butte Above Jonesville 1800 Comment
  CAS-BOT-BC295170  Erigeron inornatus John Thomas Howell 1955-6-15 30476 Butte Paradise 518 Comment
  CAS-BOT-BC295771  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
  CHSC50792  Erigeron petrophilus var. sierrensis Vernon Oswald; Lowell Ahart 1990-7-31 4414 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 902 Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  CHSC90025  Eriodictyon californicum Ross Rowland 2001-4-14 45 Butte On slope at the Skyway and Crossroads Road junction about 50 yards north of Skyway, about 1 1/2 miles south of Neal Road in Paradise. 615480mE/4400220mN/zone 10N. 429 Comment
  SEINET10497041  Eriodictyon californicum Mary Susan Taylor 1975-2-16 Taylor 385 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  POM305187  Eriogonum luteolum Henry J. Ramsey, Henry J. Ramsey 1939-10-15 594 Butte Feather River Hwy. Comment
  CAS-BOT-BC124297  Eriogonum marifolium Edwin Bingham Copeland 1930-7-12 158 (UCBerkeley's 410) Butte Above Jonesville 2000 Comment
  CHSC39135  Eriogonum nudum var. oblongifolium R. A. Schlising; K. Tarp 1982-7-28 4355 Butte Plumas Natl. Forest, sw of Coyote Gap and s of Big Bar Mt. 868 Comment
  CHSC34722  Eriogonum nudum var. pubiflorum M. S. Taylor 1981-7-10 4058 Butte N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi ne of Oroville. 487 Comment
  CHSC39085  Eriogonum nudum var. pubiflorum R. A. Schlising; K. Tarp 1983-8-12 4444 Butte N part of county, on dirt road to Carr Mine NE of Philbrook Reservoir, 1.2 miles W of Plumas County line. 1981 Comment
  RSA4637  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. 1500 Comment
  CAS-BOT-BC269849  Eriogonum nudum var. pubiflorum Gladys L. Smith 1976-6-5 4534 Butte Roadside banks of Lower Feather River Canyon (Rte. 70) 304 Comment
  CAS-BOT-BC265210  Eriogonum umbellatum var. speciosum James L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  SEINET10904446  Eriogonum umbellatum var. speciosum Mary Susan Taylor 1981-7-10 Taylor 4063 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  UC912723  Eriogonum ursinum A. A. Heller 1917-7-29 12855 Butte summit above Jonesville 2133 Comment
  CHSC45950  Eriogonum wrightii var. trachygonum Lowell Ahart 1974-9-7 626 Butte On a gravel bar along North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC95179  Eriophorum gracile R. D. Fischer 2005-6-5 22 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing in wet portion of Chico Meadow above pond. 1280 Comment
  SD5694  Eriophyllum lanatum E. B. Copeland 1930-7-11 Butte Jonesville 1550 Comment
  CHSC48453  Erodium botrys Vernon Oswald 1984-3-7 1089 Butte Upper Bidwell Park, Chico, beside the creek trail w of Alligator Hole. 91 Comment
  CHSC101281  Erodium brachycarpum Lowell Ahart 2009-4-3 15527 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS115234  Erodium brachycarpum Lowell Ahart, John Dittes 2009-3-20 15509 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
  CAS-BOT-BC40748  Erysimum capitatum H. F. Copeland 1931-6-10 1527 Butte Woods between Willow and Colby Creeks. Comment
  UC856289  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte near Cohasset; Sierra foothills Comment
  CHSC113492  Erythranthe breviflora Lowell Ahart 2014-7-10 19615 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CHSC40889  Erythranthe filicifolia Lowell Ahart 1985-5-22 5027 Butte Along Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CAS-BOT-BC153854  Erythranthe glaucescens A. A. Heller 1914-4-29 11340 Butte 12 miles north of Chico Comment
  CAS-BOT-BC153869  Erythranthe glaucescens Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC40886  Erythranthe glaucescens Lowell Ahart 1985-5-6 4934 Butte About 1/10 mile east of Longfellow Avenue, Chico. 60 Comment
  CHSC44944  Erythranthe glaucescens Cathy Young 1988-4-23 8 Butte 1/4 mi e of Durham, 50 yds n of Durham Highway on the w bank of Butte Creek. 67 Comment
  CHSC110630  Erythranthe guttata Christopher T. Ivey; Jenn Coughlan 2013-5-17 381 Butte Centerville Rd. about 2 km NE of Honey Run bridge. 115 Comment
  CHSC44943  Erythranthe guttata J. Marr 1988-3-19 14 Butte 2.5 mi on w side of Cherokee Rd, ca. 6 mi n of Oroville. 342 Comment
  CHSC44787  Erythranthe nasuta R. Banchero 1980-3-27 84 Butte Along Richardson's Springs Rd Ca 4 mi NE of its jct with Cohasset Hwy, Ca 1.3 mi W of the town of Richardson's Springs. 213 Comment
  SEINET10938446  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3515 Butte T23N R4E se sec 36, Pulga SW quad. Serpentine embankment, s side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek canyon, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 2l air mi n of Oroville. 3300 ft. 1006 Comment
  SEINET10834239  Erythronium grandiflorum var. giganteum R. M. Austin Austin 5 Butte Butte Creek Comment
  UC119848  Erythronium multiscapideum Mrs. R. M. Austin 1883-1 320 Butte Davis Creek Comment
  UC1485464  Erythronium multiscapideum M. S. Taylor 1981-4-8 3518 Butte serpentine ridge on n side of Concow Rd ca 3/4 mi s jct with Ponderosa Way (ca 6 air mi n of Jarbo Gap on Hwy 70, ca 21 air mi n of Oroville); Pulga SW Quad 853 Comment
  CAS-BOT-BC504519  Erythronium multiscapideum Lois E. Edwards 1917-4-1 s.n. Butte De Sabla 548 Comment
  CAS-BOT-BC504520  Erythronium multiscapideum W. J. Follett 1965-3-24 s.n. Butte Feather River highway, 0.6 mi. above Pulga Bridge Comment
  CAS-BOT-BC504538  Erythronium multiscapideum M. S. Taylor 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia 853 Comment
  SEINET10469556  Erythronium purpurascens Mary Susan Taylor 1981-4-28 Taylor 3561 Butte T22N R5E nw sec 2. Pulga SW quad. S side of 23N28.2 (Rd to Big Bar Mt from Coyote Gap), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, ca. 4 air mi E of Pulga. 4200 ft. 1280 Comment
  CHSC40627  Eschscholzia californica Ahart; Jokerst 1985-3-24 4860 Butte Found growing west of Lunt Road, about 1/2 miles north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC88970  Eschscholzia lobbii Christine Hantelman 2000-3-23 22 Butte On firebreak on south side of Wookey road, 1/8 mi west of driveway at end of road. 112 Comment
  SJSU15292  Eschscholzia lobbii Lisa Morton 2002-3-30 13 Butte Upper Bidwell Park, Along N. Rim Trail on top of butte. 80 Comment
  UC85481  Eschscholzia lobbii Mrs. R. M. Austin Feb. 1896 Butte Chico Plains Comment
  CHSC3644  Eucalyptus tereticornis Alice L. Stoll 1966-3-5 47 Butte Lower Bidwell Park between freeway and Manzanita Ave., Chico, along roadside. Comment
  CAS-BOT-BC312033  Eucephalus breweri Vernon Oswald; Lowell Ahart 1987-8-5 3178 Butte Near Humboldt Peak 2148 Comment
  UC1609300  Eucephalus breweri Lowell Ahart 1993-9-8 7158 Butte about 1 mi e Snow Mountain (n side of ridge) 2072 Comment
  CHSC92748  Euonymus occidentalis var. occidentalis L. P. Janeway; Matt Brown 2005-6-21 8426 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Lockerman Creek 0.9 km north of its confluence with Camp Creek. 963 Comment
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Mar 30 2007
  CHSC25348  Euphorbia crenulata Marc P. Hayes 1977-4-22 18 Butte Ca. 2 km nw of Jarbo Gap, ca. 11 km w of Paradise. Forest, along Hwy 70, ca. 20 m n of Rd. 660 Comment
  CHSC54301  Euphorbia crenulata Vernon H. Oswald; Lowell Ahart 1991-6-5 4653 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. On roadside banks. 822 Comment
  JEPS122246  Euphorbia maculata Lowell Ahart 2014-9-23 19864 Butte Parking lot of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  UCD142580  Euphorbia maculata L. Ahart 1981-9-26 3200 Butte Along the Sacramento River, ca. 6 mi. W of Chico. 40 Comment
  SD60216  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte at the base of hills ca. 3 miles east of Chico 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
  CHSC615  Euphorbia peplus V. Holt 1945-11-16 Butte Chico. 57 Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC57223  Euphorbia spathulata Vernon H. Oswald; Lowell Ahart 1992-3-24 4890 Butte Lake Oroville Recreation Area on the north side of Thermalito Diversion Pool, along the first stream west of the spillway and ca. 0.3 mi north of Burma Rd. 76 Comment
  UC1586603  Euphorbia spathulata Vernon H. Oswald and Lowell Ahart 1991-5-11 4576 Butte Loafer Creek Recreation Area Lake Oroville (along Roy Rodgers Trail, near the group camps) 341 Comment
  CHSC44535  Festuca arundinacea Lowell Ahart 1988-6-29 6104 Butte Along the road to the Andy Smith Ranch, about 100 yards east of Bean Creek Road, about 1 1/2 miles south-east of Little Bald Rock. 914 Comment
  CDA38775  Festuca bromoides L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte On the north side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC82473  Festuca occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9744 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  JEPS87481  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC41291  Festuca rubra S. C. Morey 1983-7-21 498 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC77690  Ficus carica John Thomas Howell 1959-9-20 34712 Butte Feather River Highway at West Branch bridge 152 Comment
  CHSC27179  Ficus carica M. MacArthur 1968-6-12 321 Butte NE of Aymer Jay Hamilton School play yard, Chico State College campus. 60 Comment
  RSA755423  Filago gallica L. Ahart 2009-5-30 15809 Butte West side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile west of the intersection of Highway 32 and Ten Mile House Road. 441 Comment
  CDA38976  Fimbristylis autumnalis L. Ahart, Vernon H. Oswald 1999-8-13 8145 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  SD2199  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville, in low woods 1550 Comment
  CAS-BOT-BC437079  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC52507  Frangula californica subsp. californica C. H. M. 1919-11-21 s.n. Butte Chico Comment
  CAS-BOT-BC62946  Frangula californica subsp. tomentella Lowell Ahart 1968-5-8 972 Butte Peter Ahart Ranch, Honcut. 150 Comment
  CAS-BOT-BC55650  Frangula purshiana A. A. Heller 1928-6-16 14690 Butte in the yellow pine forest at Butte Meadows Comment
  CHSC46397  Frangula rubra subsp. obtusissima Lowell Ahart 1989-5-29 6311 Butte On the east side of the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 822 Comment
  UC196270  Fraxinus dipetala A. A. Heller 11405 Butte between the 14 Mile House and Forest Ranch 731 Comment
  CAS-BOT-BC223474  Fraxinus latifolia Lowell Ahart 1987-8-3 5849 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC130313  Fritillaria eastwoodiae L. C. Hanson 1987-4-27 s.n. Butte De Sabla Reservoir, near Magalia Comment
  HSC72756  Fritillaria eastwoodiae M. S. Taylor, D. V. Hemphill 1981-3-18 3430 Butte Ridge NNW of sawmill Peak of Jordan Hill Rd., 1.0 mi. NE of Magalia 701 Comment
  CAS-BOT-BC505285  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Above the road cut bank along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  CAS-BOT-BC508147  Fritillaria recurva Flower Show 1929-4-1 s.n. Butte Unspecified Comment
  SEINET5725074 Image available Fritillaria recurva Gary L. Carlin 1971-1 17 Butte Vildas Road, 2.5 miles east of Cohasset; Cohasset Comment
  CHSC4005  Galium aparine E. P. Parreno 1967-3-30 Butte Upper Bidwell Park ca. 400 yards NE of Chico Municipal Golf Course. Comment
  CHSC61007  Galium aparine Lowell Ahart 1993-6-20 6988 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UCR190819  Galium aparine 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
  JEPS52659  Galium bolanderi Lauramay T. Dempster 1964-7-24 4047 Butte Nimshew 731 Comment
  SEINET10968838  Galium divaricatum Mary Susan Taylor 1980-5-24 Taylor 2737 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC48885  Galium grayanum var. grayanum Vernon H. Oswald 1983-8-17 988 Butte Trail between Humboldt Summit and Humboldt Peak, ca 3 mi NE of Jonesville. 2097 Comment
  CHSC90959  Galium murale Lowell Ahart 2005-4-14 11705 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
  CHSC47480  Galium porrigens var. tenue Lowell Ahart 1976-5-21 1109 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 air miles east of Honcut, about 12 miles south of Oroville. 48 Comment
  CHSC7105  Galium porrigens var. tenue Harley J. Parmenter 1969-2-11 7 Butte 40 yds. N of the entrance to Burtons Mesa. 298 Comment
  CHSC32843  Galium tricornutum S. Scott 1981-4-24 Butte 1 km E of Manzanita Ave and Centenial Ave jct, 2.5 km E of Chico. 97 Comment
  CHSC33963  Galium trifidum var. pusillum M. S. Taylor; L. Ahart 1981-8-16 4196 A Butte Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1828 Comment
  UC600429  Galium trifidum var. pusillum H. F. Copeland 1930-7-28 Butte S. Willow Creek Jonesville 1828 Comment
  UC1562451  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville) 30 Comment
  CHSC52024  Garrya fremontii M. P. Howe 1984-4-20 13 Butte Doe Mill Summit. 579 Comment
  RSA134772  Garrya fremontii Percy C. Everett, E. K. Balls 1959-10-20 23910 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  UC1122706  Garrya fremontii J. E. Sowder 1933-7-14 112 Butte .12 mi n 14 Mile House; Chico Quad. 609 Comment
  SEINET12137514  Garrya fremontii T. A. Welgan 1979-1 1 Butte ca 9 mi SE of Chico on Hwy 32, 3 yds N of Highway 32 213 Comment
  CAS-BOT-BC282598  Gastridium phleoides Lowell Ahart 1977-6-2 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10559590  Gastridium phleoides A. Arthur Heller 1914-6-2 Heller 11474 Butte Hills 8 miles north of Oroville. Comment
  SEINET191205 Image available Gastridium phleoides A. A. Beetle 1941-6-27 2744 Butte Lone Pine Forest Guard Station: 2 miles north of route 32 Comment
  SEINET10790827  Gastridium ventricosum Lowell Ahart 2003-6-20 Ahart 10295 Butte T17N, R4E, southeast 1/4 Section 3. Normal size plants, on dry soil, in open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles southeast of Oroville. 46 Comment
  JEPS108157  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River 1179 Comment
  RSA715595  Gaultheria ovatifolia L. P. Janeway 1994-7-19 4696 Butte South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1180 Comment
  RSA718782  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  CHSC37442  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-19 4156 Butte NE of Stirling City near e side of county; Crane Valley, southern portion. Meadow. Comment
  CHSC36709  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32, on roadside fill. Comment
  JEPS110208  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 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
  JEPS108772  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 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
  CHSC46705  Gentiana newberryi var. tiogana V. Oswald; L. Ahart 1989-8-22 3956 Butte Butte Creek House Meadow on the e side of Humbug Rd, ca. 3.5 mi (air) se of Jonesville. 1767 Comment
  CHSC115899  Gentiana newberryi var. tiogana R. A. Schlising; A. Kannely 2015-8-12 4478 Butte Butte Creek House Meadow Ecological Reserve, along Humbug Road. 1767 Comment
  CHSC113197  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards west of the old road, west of the first area to park, about 3 1/2 miles (air) northeast of Oroville Dam. 252 Comment
  CHSC39648  Geranium molle Lowell Ahart 1983-4-10 3926 Butte On steep sidehill, about 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  CHSC90248  Geranium molle Robert Kissane 1989-4-20 12 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  CHSC110104  Geranium purpureum L. P. Janeway 2012-5-29 10827 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road km north of Lower Forbestown Road; 1.4 air km south of the Ponderosa Reservoir dam. 485 Comment
  CDA25864  Geum macrophyllum T. C. Fuller 1962-7-12 9177 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC29391  Geum macrophyllum R. A. Schlising; R. Banchero 1980-6-2 3634 Butte First crossing of Butte Creek by Humboldt Road, above Butte Meadows. In area bordering the creek. 1389 Comment
  CHSC87575  Gilia capitata subsp. pedemontana R. D. Fischer 2004-4-20 126 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Patch located approx. midway along Humboldt Trail. 426 Comment
  CHSC185  Githopsis pulchella subsp. campestris M. Roberson 1956-4-9 Butte Near Paradise along Skyway. 548 Comment
  CHSC186  Githopsis pulchella subsp. campestris M. Diven 1930-5-15 Butte Humboldt Rd. east of Chico. 243 Comment
  CHSC38287  Githopsis pulchella subsp. campestris Vernon Oswald 1983-5-18 508 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  JEPS28832  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1306 Butte ca. 3 mi. n.w. Paradise (along Honeyrun rd.) 243 Comment
  SEINET10840482  Githopsis pulchella subsp. campestris Carter 1965-5-15 Carter 201 Butte On east side of Highway 32, 10.7 miles northeast of 99E overpass at Chico 305 Comment
  CHSC31948  Githopsis specularioides J. D. Jokerst 1979-5-1 1220 Butte Top of North Table Mt., ca. 200 meters S of Cherokee Rd. 396 Comment
  SEINET10972188  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart s.n. Butte Swedes Flat road, near Bangor 457 Comment
  SEINET12331825  Githopsis specularioides Unknown 1985-1 4967 Butte W of Lunt Road, about 0.5 mi N of the Intersection of LuntRoad and Highway 70, N of Yankee Hill, 503 Comment
  UCD85124  Glyceria elata G. F. Hrusa; T. D. Wilfred 1996-7-9 13189 Butte Plumas National Forest. On 23N15, approx. 100 m. to S of Hwy 162 across from entrance to Rogers Cow Camp. 1250 Comment
  POM308583  Gnaphalium beneolens Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3234 Butte Feather River Hwy. Comment
  CDA34553  Gnaphalium canescens subsp. beneolens L. Ahart 2008-11-4 15398 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. Comment
  CHSC29291  Gnaphalium palustre R. A. Schlising 1980-5-26 3602 Butte Several mi sw village of Cohasset, e of Cohasset Road. 472 Comment
  POM222735  Gnaphalium palustre H. F. Copeland 1928-8-17 679 Butte Jonesville. Comment
  SD122586  Gnaphalium purpureum Lowell Ahart 1984-6-8 4660 Butte Along Ponderosa Way 1/8 mile west of Ponderosa Dam; 2 miles northwest of Forbestown. 370 Comment
  SEINET6167159  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  CHSC48989  Gratiola ebracteata Vernon Oswald 1987-8-10 3200 Butte Snag Lake located 2.5 mi (air) se of Jonesville. 1726 Comment
  SEINET10473780  Grindelia camporum Mary Susan Taylor 1975-6-30 Taylor 811 Butte E side of Cohasset Hwy, ca. 2 mi N of Chico; Valley Grassland. 244 Comment
  CHSC116978  Grindelia hirsutula Matthew Forster 2013-5-14 Butte Oroville Spillway, off Oro Powerhouse Rd.,, adjacent to Oroville Spillway. 118 Comment
  JEPS113905  Grindelia hirsutula L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills; Along the Oroville-Quincy Hwy 0.3 road km SW of S end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville 306 Comment
  JEPS115719  Grindelia hirsutula Lowell Ahart 2009-8-3 16263 Butte On the east side of Big Chico Creek, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  UCR219091  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15580 Butte Sacramento Valley, Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg. ) of Honcut, 7.2 mi. SE (114 deg. ) of Gridley 35 Comment
  UC196299  Hackelia californica A. A. Heller 1914-8-7 11657 Butte Summit back of Jonesville 2133 Comment
  CHSC45678  Hedypnois cretica Vernon Oswald 1986-4-10 1066 Butte Dunstone Dr. 0.1 mi n of LaPorte Rd. Roadside. Near Wilson Creek. 41 Comment
  CHSC11824  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Swamp, Jonesville. 1500 Comment
  CHSC78371  Helenium bigelovii Vernon H. Oswald 2000-7-13 9940 Butte Forest road 25N02 between Jones Meadow and Bald Mountain Lookout. 1731 Comment
  CHSC93979  Helenium bigelovii R. D. Fischer 2004-6-20 770 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected north of pond along the eastern meadow edge. 1371 Comment
  POM180853  Helenium bigelovii H. F. Copeland 1924-8-12 868 Butte Jonesville. Comment
  JEPS113571  Helenium puberulum Lowell Ahart 2007-7-27 14399 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  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-BC309394  Helenium puberulum G. Earle Kelley 1920-10-31 s.n. Butte Los Verjils Comment
  CHSC11823  Helianthella californica var. nevadensis E. B. Copeland 1931-6-22 695 Butte Jonesville, at 'the Summit'. 2150 Comment
  CHSC86586  Helianthella californica var. nevadensis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7859 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.2 km east-southeast of south end of Bidwell Bar bridge. 277 Comment
  JEPS124154  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  CAS-BOT-BC305847  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 mile north of Highway 162, about 2 1/2 miles north-west of Biggs 28 Comment
  CAS-BOT-BC309788  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte Near Chico Comment
  SEINET10475208  Hemizonia fitchii Mary Susan Taylor 1975-6-25 Taylor 806 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
  SEINET10454761  Heracleum lanatum Mary Susan Taylor 1981-5-15 Taylor 3744 Butte T22N R5E se sec 2, Pulga SW quad. W side of rd 23N00.1, ca. 3/4 mi S of Coyote Gap, ca.4 air mi E of Pulga on Feather River Hwy 70. Creek crossing road; shaded; 3800 ft. 1158 Comment
  CHSC50661  Herniaria hirsuta subsp. hirsuta Lowell Ahart 1990-6-16 6507 Butte Along the edge of the dirt road, just south of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  JEPS124002  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC310155  Hesperevax caulescens Mrs. C. C. Bruce 1897-5-1 2112 Butte Fields near Chico Comment
  CAS-BOT-BC175999  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 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
  CHSC11042  Hesperolinon californicum Lowell Ahart 1968-5-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC78152  Hesperolinon californicum Lowell Ahart 2000-5-31 8426 Butte Steep grassy and shrubby slope, just west of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 286 Comment
  JEPS98553  Hesperolinon californicum Lowell Ahart 2000-5-17 8368 Butte 7 1/4 air mi W of Oroville (SE margin Thermalito Afterbay, W of poor dirt road, S of the Cottonwood tree, about 1/8 mi N of the Richvale Hwy, about 3/4 mi E of Hwy 99) 42 Comment
  SEINET10493822  Hesperolinon micranthum Lowell Ahart 1985-6-30 Ahart 5085 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CHSC30986  Heteranthera limosa M. S. Taylor 1978-7-21 1847 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in ricefield. 30 Comment
  SEINET10469503  Heteranthera limosa Lowell Ahart 1991-7-21 Ahart 6669 Butte About 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  CHSC54577  Heteranthera rotundifolia Lowell Ahart; Peter Ahart, Carl Wick 1991-7-21 6669 Butte In a rice field, about 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. 30 Comment
  CHSC51860  Heterocodon rariflorum L. P. Janeway 1988-6-14 2782 Butte Upper reaches of Haw Cr, 1 3/4 air mi SE of Lomo. 1226 Comment
  CHSC42051  Heteromeles arbutifolia Lowell Ahart 1986-10-16 5401 Butte South of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC45806  Heteromeles arbutifolia L. P. Janeway 1988-6-19 2816 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/firebreak along powerline (3-wire, wooden pole). 274 Comment
  SEINET11908428  Heteromeles arbutifolia Unknown 1978-1 6 Butte 20 ft. S of hwy. 32, 9 mi E. of jct of hwys 99 and 32. 9 mi, E of Chico 366 Comment
  CAS-BOT-BC310278  Heterotheca grandiflora John Thomas Howell 1959-9-20 34626 Butte Eastern outskirts of Oroville 60 Comment
  CHSC70848  Heterotheca grandiflora Lowell Ahart 1998-4-8 7951 Butte 100 yards south of the Thermalito Diversion Dam, on the east side of the Feather River, City Park, Oroville. 57 Comment
  JEPS113324  Heterotheca grandiflora L. P. Janeway 2006-10-4 8901 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  RSA0074384  Heterotheca grandiflora L. Ahart 2005-11-20 12491 Butte Along road, on the west side of the Poe Power House, east of North Fork of the Feather River. 276 Comment
  CHSC2421  Heuchera micrantha var. erubescens R. Carter 1965-6-1 222 Butte Found on top of Big Bald Rock, growing below granite shelf about 75 yds. E of Exact top of rock, ca. 20 mi. E of Oroville. 1005 Comment
  CHSC26676  Hibiscus lasiocarpos var. occidentalis M. S. Taylor; M. Hayes 1977-8-16 1441 Butte In small area on Clear Creek between the Organic garden and the man-made ponds, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC41924  Hieracium scouleri var. scouleri Lowell Ahart 1983-7-24 4210 Butte Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC33184  Hirschfeldia incana R. E. Preston 1981-5-27 72 Butte On n shoulder of Sacramento Ave., ca. 0.5 km w of Meridian Rd., ca. 8 km w of Chico. 40 Comment
  CHSC959  Hoita orbicularis R. M. Staley 1952-7-15 Butte Paradise. 548 Comment
  CAS-BOT-BC280714  Holcus lanatus Lowell Ahart 1980-7-4 2460 Butte Along Forbestown Road 750 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
  UC1594546  Holozonia filipes Lowell Ahart 1992-7-23 6833 Butte about 1.25 mi nw Oroville Dam (bottom and sides of Gulch, n of the Thermalito diversion Pool); Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  CHSC102174  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2009-5-30 15778 Butte On dry soil, broad open drainage in oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC100994  Hordeum murinum subsp. glaucum L. P. Janeway 2008-4-2 9248 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC31417  Hordeum murinum subsp. leporinum L. Orme 1980-3-15 6 Butte .4 km. W. of railroad tracks, .8 km. SW. of Chico. Edge of a field. 54 Comment
  CHSC48849  Horkelia fusca subsp. parviflora Vernon Oswald 1985-7-2 1882 Butte Skyway (Bull Hill Rd.) at Coon Creek, 5.5 mi se of Butte Meadows. On bank of creek in a meadow. 1554 Comment
  RSA126021  Horkelia tridentata E. K. Balls 1957-5-22 22506 Butte Hwy 40 , 18 miles NE from Oroville 701 Comment
  SD2233  Horkelia tridentata var. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CAS-BOT-BC536251  Horkelia tridentata var. tridentata H. F. Copeland 1920-7-11 53 Butte By Butte Creek 1828 Comment
  CHSC26695  Hosackia crassifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1471 Butte On n side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  UCD106041  Hosackia incana A. A. Heller 1919-5-18 13172 Butte location unknown. 1072 Comment
  CHSC28390  Hosackia oblongifolia J. D. Jokerst 1979-8-12 320 Butte 1.0 mi W. of Kimshew Falls and W. Branch Feather River. Along creek bed. Comment
  CHSC42556  Hosackia oblongifolia var. oblongifolia Lowell Ahart 1987-5-27 5709 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  LA47950  Hosackia oblongifolia var. oblongifolia E. B. Copeland; 1930-7-11 420 Butte Jonesville 1500.0 Comment
  CHSC42943  Hosackia stipularis var. ottleyi Lowell Ahart 1987-7-8 5804 Butte Near Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  JEPS124324  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SEINET10837219  Hydrophyllum occidentale Mary Susan Taylor 1979-5-4 Taylor 1997 A Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  JEPS118482  Hypericum anagalloides Lowell Ahart 2011-7-9 17575 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 974 Comment
  UC871904  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte 10 mi. e. Chico Comment
  UCD169859  Hypericum anagalloides Lowell Ahart 2009-6-19 15922 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC400824  Hypericum anagalloides Lowell Ahart 1981-8-31 3055 Butte Along Black Bart Road, Forbestown 750 Comment
  CAS-BOT-BC410221  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  SD3077  Hypericum formosum var. scouleri E. B. Copeland 1930-7-18 Butte Jonesville 1550 Comment
  CHSC76281  Hypericum mutilum Lowell Ahart 1999-9-21 8263 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC92048  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  JEPS117557  Hypericum perforatum Lowell Ahart 2010-6-25 16841 Butte Open pasture field, on the north side of the improved parking area, about 100 yards north of the cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  CAS-BOT-BC401336  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  CHSC46979  Imperata brevifolia Vernon H. Oswald 1989-9-28 4020 Butte Richardson Springs in the foothills ne of Chico. North of the falls on the East Branch of Mud Creek. 243 Comment
  JEPS43465  Iris chrysophylla Joan O. Danielson 1966-4-6 17 Butte Oregon Gulch Road 609 Comment
  CAS-BOT-BC133553  Iris hartwegii John Thomas Howell 1978-4-17 52826 Butte Skyway near Neal Road, Paradise 609 Comment
  RSA137403  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-23 22525 Butte State Highway 32, 6.9 miles south from Lomo, at junction with road from Butte Meadows 1037 Comment
  UCD138747  Iris hartwegii R. H. Ramsey 1961-5-13 53 Butte 1 mile north of Berry Creek on Oroville - Quicy Road. Comment
  CHSC24910  Iris macrosiphon T. L. Reynolds 1976-4-23 56 Butte 0.3 mi ne of Covered Bridge, 7.2 mi ese of Chico. Comment
  SBBG40332  Iris tenuissima J. Ingram, A. Ingram 1960-4-6 500 Butte Endicot Springs on Neal Rd, S of Paradise Comment
  JEPS121773  Isatis tinctoria L. P. Janeway 2014-5-22 11259 Butte Northern High Sierra Nevada. Plumas National Forest; along the Oroville-Quincy Hwy in Brush Creek, 0.6 km northeast of the upper end of Bald Rock Road. Comment
  POM183198  Isoetes bolanderi H. F. Copeland 1930-7-29 1374 Butte Neighborhood of Jonesville. 1829 Comment
  UC398879  Isoetes bolanderi E. B. Copeland 1929-7-29 329 Butte above Jonesville 1750 Comment
  CAS-BOT-BC61870  Isoetes nuttallii Lowell Ahart 1983-6-12 4046 Butte 7 miles south-west of Feather Falls, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville 425 Comment
  CAS-BOT-BC61874  Isoetes nuttallii Lowell Ahart 1980-5-17 2271 Butte 1/2 mi. south-east of Hurleton 600 Comment
  CHSC116702  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC30989  Isoetes nuttallii M. S. Taylor 1980-3-15 2382 Butte Ca. 1/4 mi s of Pentz rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  SEINET3449664  Isoetes nuttallii Unknown 2003-4-15 10094 Butte Oroville, Oroville, about 7 air miles north, northwest of Cherokee Road, North Table Mountain, south edge of Beatson Hollow, about 1.25 miles northwest of the iron gate and fence, about 80-100 ? southwest of the section corner pipe, about 1/8 miles southwest of the tall Digger Pine 290 Comment
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Sep 19 2014
  SEINET10470698  Isoetes nuttallii Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4046 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-BC109892  Juncus Lowell Ahart 1981-7-24 2999 Butte Sierra Nevada. About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CDA37214  Juncus acuminatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  CHSC36895  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 2 1/2 mi e of 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
  RSA726655  Juncus acuminatus L. Ahart 2007-7-7 14263 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  CHSC42079  Juncus balticus L. A. Hinman 1986-4-3 7 Butte Ca. 6.5 mi ne of Chico. NW side of Mud Creek, ca. 20 yd w of creek. 195 Comment
  JEPS114587  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  JEPS114980  Juncus brachyphyllus Lowell Ahart 2008-6-13 14821 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  SEINET10472241  Juncus bufonius Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4096 Butte T21N R5E sec 30. Along Bloomer Hill Rd, ca. 3 mi nw of Oroville-Quincy Hwy, ca. 16 mi ne of Oroville. Yellow Pine Forest; 700 m. 700 Comment
  CDA5727  Juncus bufonius var. bufonius L. Ahart 2005-4-14 11719 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC103697  Juncus bufonius var. bufonius Lowell Ahart 2010-5-14 16665 Butte Along a small drainage, near south park fence, Disc Golf Area, west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  CHSC113167  Juncus bufonius var. bufonius Lowell Ahart 2013-11-13 19240 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  JEPS87457  Juncus bufonius var. congestus Lowell Ahart 1993-5-15 6940 Butte ca. 2 mi. w. Biggs (n. side of Biggs Princeton Rd.) 30 Comment
  CHSC42137  Juncus bufonius var. occidentalis Lowell Ahart 1984-7-19 4733 Butte Along the edge of the dirt road, there is a seep along the road gutter in this area, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  CHSC30360  Juncus capitatus J. D. Jokerst 1980-5-15 697 Butte Top of Cohasset Ridge, ca 1/4 mi E of Cohasset Ridge. 487 Comment
  CHSC47540  Juncus capitatus Lowell Ahart 1980-5-4 2207 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC6157  Juncus capitatus E. Parreno 1968-4-19 67 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  CHSC84202  Juncus effusus subsp. pacificus Lowell Ahart 2003-6-30 10335 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  SEINET11787692  Juncus ensifolius J. D. Jokerst, Schlising, R. A. 1982-1 1650 Butte W edge of Skyway 1.1 mi S of Innskip 1433 Comment
  CHSC40351  Juncus exiguus Lowell Ahart 1985-6-30 5086 Butte 10 yards south of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC47554  Juncus howellii Lowell Ahart 1981-8-15 3047 Butte On the south side of the dirt road, about 1 mile east of Coon Hollow Road, southeast of Snag Lake, about 10 miles north of Inskip. 1524 Comment
  CHSC99000  Juncus kelloggii Lowell Ahart 2008-5-30 14794 Butte Dry to damp granite soil, small meadow, bottom of an old gold mined area, about 150 yeards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  SEINET10472450  Juncus leiospermus Mary Susan Taylor 1980-4-21 Taylor 2560 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  CHSC93492  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 368 Comment
  CHSC113462  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte Depression in a large disturbed area on the south side of Philbook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC99755  Juncus occidentalis Lowell Ahart 2008-6-13 14816 A Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 311 Comment
  JEPS121936  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC49623  Juncus oxymeris Vernon Oswald 1987-5-18 2910 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  CHSC96881  Juncus tenuis Lowell Ahart 2007-7-11 14293 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC96948  Juncus tenuis Lowell Ahart 2007-7-7 14262 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
  JEPS114823  Juncus tenuis Lowell Ahart 2008-6-2 14804 Butte below the high water mark of Lake Oroville, on the N side of the South Fork of the Feather River, about 50 yds E of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mi NW of the Ponderosa Dam 243 Comment
  UCD141911  Juncus triformis L. Ahart 1980-7-20 2474 Butte on the north side of Bean Creek Road, about 1/2 mile south of Little Bald Rock, about 15 miles northeast of Oroville. 1005 Comment
  CHSC96941  Juncus usitatus Lowell Ahart 2007-7-5 14249 Butte On the north side a drainage ditch, about 25 yards west of French Avenue, on the north side of Evans Reimer Road, about 2 miles (air) southwest of Gridley. 24 Comment
  JEPS113749  Juncus usitatus Lowell Ahart 2007-8-3 14405 Butte On the west side of a large canal, on the west side of Aguas Frias Road (Goodspeed Watt), about 6 miles (air) northwest of Richvale 29 Comment
  SBBG128190  Juncus usitatus L. Ahart 2009-7-4 15999 Butte side of a large shallow pond, on the W side of the gravel rd, ca. 100 yards S of parking lot 3, Gray Lodge Waterfowl Management Area, ca. 6 mi (air) SW of Gridley 21 Comment
  RSA293236  Keckiella breviflora subsp. glabrisepala D. C. Michener 1980-8-4 3777 Butte Northern Sierra Nevada. Feather River Canyon, 4.4 miles north of Pulga on CA 70. 500 Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  CAS-BOT-BC235679  Keckiella breviflora var. glabrisepala Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CAS-BOT-BC237823  Keckiella lemmonii Lowell Ahart 1982-9-29 3841 Butte Along Pinkard Creek, about 1 1/2 miles north of the Lost Creek Res. Dam, about 3 1/2 miles north-west of Strawberry Valley 1200 Comment
  JEPS95060  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte ca. 8 mi. (air) n.e. Stirling City (ca. 0.25 mi. e. of Table Mountain, on w. side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  UCR47786  Keckiella lemmonii D. C. Michener 1980-8-4 3778 Butte Northern Sierra Nevada Mtns, Rocky slopes and fill along the Feather River about 2.9 mi south of the Plumas County line 549 Comment
  JEPS103538  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UC204878  Koeleria phleoides A. A. Heller 1914-5-19 11417 Butte Comment
  CHSC33693  Kumlienia hystricula L. Ahart 1981-4-29 2717 Butte Along edges of a small stream near Ponderosa Dam, near Forbestown. 500 Comment
  CHSC43864  Kumlienia hystricula Vernon Oswald 1988-3-20 3260 Butte Centerville flume upstream from Humbug Rd. at the s end of the tunnel. 353 Comment
  UC89375  Kyhosia bolanderi R. M. Austin Jul 1896 412 Butte Colby Comment
  CAS-BOT-BC340332  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  CAS-BOT-BC274276  Lachnagrostis filiformis Earle T. Gammon 1959-7-6 s.n. Butte Rice Exp. Station, Biggs Comment
  UC828864  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham Comment
  RSA755344  Lagophylla glandulosa L. Ahart 2009-7-9 16002 Butte On the east side of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC341315  Lagophylla glandulosa David D. Keck 1932-7-2 1612 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  CHSC11371  Lamium amplexicaule Lowell Ahart 1962-3-10 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC31888  Lamium amplexicaule L. Ahart 1973-4-15 201 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10497958  Lamium amplexicaule Mary Susan Taylor 1975-3-25 Taylor 425 Butte Chico. Comment
  CHSC104013  Landoltia punctata Lowell Ahart 2010-6-12 16806 Butte In pond, on the east side of the trail and dam, 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
  SEINET10475346  Lasthenia chrysostoma Mary Susan Taylor 1975-4-26 Taylor 513 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CAS-BOT-BC354117  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte On the Chico-Oroville rd 8 miles from Oroville. Comment
  CHSC112883  Lasthenia fremontii Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.75 air mi E of Hwy 99, in N end of Thermalito Afterbay on hill at end of S-trending peninsula. 45 Comment
  UC893757  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte on the Chico-Oroville road 8 mi from Oroville Comment
  POM30704  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  UC725646  Lasthenia fremontii A. A. Heller 1939-4-14 15379 Butte 1 mi n Rock Creek (along the road e of U.S. Highway #99E) Comment
  CHSC31574  Lasthenia glaberrima L. Ahart 1978-5-12 1718 Butte Near the edges of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  UCD73064  Lasthenia platycarpha 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
  SD129664  Lathyrus angulatus Barbara Ertter, Lowell Ahart 1986-4-13 5887 Butte Ca. 2 airmiles NNE of Honcut between Oroville & Marysville, Peter Ahart Ranch (mostly used as sheep pasture) 29 Comment
  CHSC50323  Lathyrus brownii Vernon Oswald; Lowell Ahart 1990-5-29 4264 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CAS-BOT-BC213348  Lathyrus jepsonii subsp. californicus Carl B. Wolf 1937-5-14 8670 Butte Sacramento Valley, 1 mi. No. of Durham 45 Comment
  SEINET5327267  Lathyrus jepsonii var. californicus R. McKee 1918-5-1 s.n. Butte Battle Creek. Comment
  CHSC112690  Lathyrus latifolius Lowell Ahart 2013-7-1 18814 Butte Meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  RSA0080126  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET5327314  Lathyrus nuttallii R. McKee 1918-4-28 s.n. Butte Appleton Comment
  CHSC90505  Lathyrus sulphureus J. Marr 1988-4-20 3 Butte Ca. 25 ft. n side of Honeyrun Rd., Paradise. 9 mi ese of Chico. 243 Comment
  LA205072  Lathyrus sulphureus C. B. Wolf; 1937-5-18 8730 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  CHSC30903  Lathyrus tingitanus M. S. Taylor 1980-5-27 2716 Butte S side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  SEINET10841170  Lathyrus tingitanus Mary Susan Taylor 1980-5-27 Taylor 2716 Butte N and S sides of Bald Rock Road, ca. 1 mi E of Lake Madrone; Yellow Pine Forest. 671 Comment
  CAS-BOT-BC321755  Layia fremontii A. A. Heller 1914-4-14 11292 Butte Hills 8 miles N of Oroville Comment
  RSA682150  Layia fremontii R. R. Halse 2002-3-27 6151 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  POM30571  Layia fremontii C. C. Bruce 1897-05 1845 Butte [Unspecified] Comment
  SEINET10474770  Layia fremontii Mary Susan Taylor 1980-3-28 Taylor 2409 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
  SEINET11806702  Layia fremontii Unknown 1982-1 3 Butte 3 km NE of int. of Chico Canyon Rd & Manzanita Ave., Chico, 1 m from edge of Chico Canyon Rd in S Comment
  CHSC51670  Leersia oryzoides M. Bailey 1990-10-9 417 Butte East Branch of Clear Creek, near intersection of the east and west branches of Clear Creek near Pentz Road, Butte College Campus. 85 Comment
  CHSC59579  Leersia oryzoides Lowell Ahart 1992-9-9 6919 Butte About 1/2 mile south-east of Kunkle Reservoir. 243 Comment
  UCD150365  Lemna minor William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  CHSC103169  Lemna minuta Lowell Ahart 2009-11-19 16556 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  JEPS110291  Lemna minuta Lowell Ahart 2006-5-26 12639 Butte In a drain ditch, on the south side of Sheldon Avenue at the intersection with Larkin Road, about one mile south of Gridley Road, about 2 miles (air) southeast of Gridley 28 Comment
  UCD106697  Lens culinaris P. B. Kennedy 1914-5-10 4774 Butte Plant Introduction Gardens, Chico. Comment
  UCD73331  Leontodon saxatilis subsp. longirostris Chuck Hughes 2008-3-18 22 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  CAS-BOT-BC215732  Lepechinia calycina Lowell Ahart 1989-5-29 6305 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CAS-BOT-BC215734  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte Near Cohasset Comment
  CHSC101831  Lepechinia calycina Lowell Ahart 2009-5-23 15759 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road. On the east side of Guardians Trail by shrubs, about 150 yards southwest of Ten Mile House Road. 407 Comment
  CHSC48322  Lepidium didymum Vernon Oswald 1984-5-27 1209 Butte Sacramento River, Bidwell State Park, near the boat ramp. 39 Comment
  RSA715890  Lepidium didymum L. Ahart 2005-4-2 11685 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC34536  Lepidium nitidum R. E. Preston 1982-2-21 175 Butte N rim of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 274 Comment
  CHSC34539  Lepidium nitidum Lana L. Smith 1975-4-5 6 Butte Ca. 0.32 km w of junction of Clark and Pentz Rds. and 1.19 km n of Fallager Creek, 17 km se of Chico. 85 Comment
  UC203609  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte 8 mi n Oroville (near w base of Table Mountain) Comment
  CAS-BOT-BC89882  Lepidium nitidum Lowell Ahart 1980-3-11 2039 Butte Peter Ahart Ranch. Honcut. 50 Comment
  SEINET10841497  Lepidium perfoliatum Lowell Ahart 1984-6-8 Ahart 4680 Butte Along the edge of the dirt road, the road forks here and one goes to Feather Falls and the other to Lumpkin Ridge Rd, ca. 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown; Yellow Pine Forest. 500 Comment
  CAS-BOT-BC12845  Lepidium pinnatifidum Lowell Ahart 1982-7-10 3664 Butte Gray Lodge check in station, about 12 miles southwest of Gridley. Parking area. 35 Comment
  CAS-BOT-BC12847  Lepidium pinnatifidum H. A. George; V. Simpson; E. Littrel 1971-6-14 s.n. Butte Gray Lodge Wildlife Management Area, 7 miles southwest of Gridley. 27 Comment
  JEPS115831  Lepidium strictum Lowell Ahart 2009-4-26 15608 Butte Upper Bidwell Park, on the west side of Highway 32, parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  JEPS103330  Leptochloa fascicularis Lowell Ahart 2002-9-7 9929 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  RSA585120  Leptochloa fusca subsp. fascicularis H. F. Copeland 1923-8-13 1107 Butte Nelson Comment
  UCD63665  Leptochloa fusca subsp. fascicularis Beecher Crampton 1957-9-17 4619 Butte Biggs Rice Exper. Station, 5 mi. northwest of Biggs. Comment
  CHSC45751  Leptosiphon filipes L. P. Janeway 1988-5-9 2662 Butte Ridge between hwy 32 and the piece of old rd that connects to Crown Point Rd, 2 mi N of Ten Mile House. 594 Comment
  RSA715925  Leptosiphon filipes L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Opening under high power transmission lines. 981 Comment
  CHSC3523  Leptosiphon parviflorus John Francis 1966-4-23 128 Butte In pasture, Table Mt. Comment
  SD62327  Lessingia virgata Willard Spence 1960-9-7 625 Butte 7 miles south of Oroville, alternate Route 40 Comment
  RSA467654  Leucothoe davisiae Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
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Feb 6 2012
  UC1736059  Lewisia rediviva var. rediviva Dean W. Taylor 1972-4-28 1396 Butte 304 Comment
  SEINET10572653  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2673 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
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CDA13279  Ligusticum grayi G. F. Hrusa, T. D. Wilfred 1996-7-9 13127 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CAS-BOT-BC451601  Lilaea scilloides Lowell Ahart 1989-5-23 6240 Butte North of the new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  POM161665  Lilium kelleyanum E. B. Copeland 1929-07 s.n. Butte Jonesville, along Butte Creek 1550 Comment
  UC478545  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CAS-BOT-BC509474  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC25011  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville. 1500 Comment
  SEINET3992016  Lilium parvum var. luteum E. B. Copeland, Mrs. Austin 1930-7-18 614 Butte Jonesville 1500 Comment
  CAS-BOT-BC110607  Limnanthes John Thomas Howell 1976-4-1 51529 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 304 Comment
  CHSC59327  Limnanthes alba subsp. versicolor Darby Kremer 1992-4-18 21 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 Comment
  CHSC24978  Limnanthes douglasii J. Cox 1976-3-10 40 Butte N. Table Mt. Ca. 250 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 411 Comment
  CHSC83909  Limnanthes douglasii subsp. nivea Lowell Ahart 2003-4-10 10083 Butte Along a drainage, southwest of the 'sunken area,' on the top of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 310 Comment
  CHSC36134  Limnanthes douglasii subsp. rosea Greg C. Halcomb 1978-3-14 2 Butte Ca. 1 mi e of Chico at intersection of Bruce Rd. and Skyway Rd. and 100 yds wnw of Bruce Rd. 70 Comment
  JEPS43472  Limnanthes douglasii subsp. rosea Joan O. Danielson 1966-4-6 16 Butte Cherokee Rd 5 mi s Cherokee 609 Comment
  POM282577  Limnanthes douglasii subsp. rosea Lyman Benson 1935-3-27 6364 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  CHSC35691  Limnanthes floccosa subsp. californica J. D. Jokerst 1982-4-12 1528 Butte N side Shippee Rd 1/2 mi E of Hwy 99 along side road and in a small pasture between houses N of Shippee Rd. Comment
  CHSC55138  Limnanthes floccosa subsp. californica Bill Johnson 1991-4-4 Butte 100 yds nw of intersection of hwy 32 and Bruce Road s of Dead Horse Slough, east of Chico. 76 Comment
  CHSC32591  Limnanthes floccosa subsp. floccosa J. D. Jokerst 1981-3-21 1257 Butte Initial slopes delineating the beginning of the foothills, ca. 0.5 mi N of Horseshoe Lake. Comment
  RSA715420  Limnophila X ludoviciana L. Ahart 2005-8-28 12336 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road. 29 Comment
  UCD128337  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  RSA769681  Linanthus bicolor L. Ahart 2009-4-22 15585 Butte Along Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 382 Comment
  CHSC4190  Linanthus dichotomus Kathy Sommarstrom 1967-4-15 26 Butte Foothills. Found 400 yds west of covered bridge, 40 yds south of creek. 76 Comment
  CHSC96235  Linanthus dichotomus R. Fischer 2006-4-10 990 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a steep, open, grassy/rocky, hillside overlooking Big Chico Creek. 518 Comment
  JEPS118329  Linanthus filipes Lowell Ahart 2011-4-28 17332 Butte Along trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  SEINET10837197  Linanthus filipes Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4257 Butte T22N R7E sw sec 31. Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET12332636  Linanthus filipes S. S. Khan 1988-1 43 Butte North Table Mountains, ca 100 yds W of Table Mountain-Cherokee Rd, ca 6 mi N of Oroville 244 Comment
  UC754224 Image available Linanthus parviflorus Herbert L. Mason 1941-4-6 12414 Butte Cherokee; ; Cherokee, Butte Co. 304 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  RSA0037498  Lindernia dubia var. anagallidea Lowell A. Ahart 2013-7-9 18832 Butte South side of North Honcut Creek, west of the steel power line, about 2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC33339  Linnaea borealis var. longiflora R. Banchero 1980-7-7 285 Butte Ca. 5.5 mi NE of the town of Feather Falls. 1.9 mi S of the Fall River Campground along the 'Quartz Creek Rd. 1147 Comment
  SEINET12186044  Linum micranthum Unknown 1983-1 4286 Butte near Humboldt Rd., 3 mi SW of Butte Meadows, Yellow Pine Forest 1450 Comment
  CHSC47074  Listera convallarioides R. A. Schlising; B. Castro, L. Janeway 1988-7-30 4651 Butte NE part of county, on Snow Mountain Ridge. 1950 Comment
  CHSC61358  Listera convallarioides Lowell Ahart 1993-7-31 7134 Butte Along a small stream that flows into Big Kimshew Creek, on the east side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC61653  Listera convallarioides Lowell Ahart 1993-9-13 7228 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC44087  Lithocarpus densiflorus L. P. Janeway 1987-6-26 2301 Butte On Granite Ridge, along Concow Rd. 2.0 mi N of Rag Dump. 1295 Comment
  CHSC103667  Lithophragma bolanderi Lowell Ahart 2010-4-30 16603 Butte Steep north slope, below rim and above cliffs, on the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  RSA638247  Lithophragma bolanderi Michael A. Vincent, Ethan H. Freid 1998-4-6 8135 Butte Table Mountain Comment
  POM91966  Lithophragma parviflorum var. trifoliatum C. C. Bruce 1898-03 1844 Butte Plains [no specific locality given] Comment
  CHSC23637  Lithospermum californicum M. S. Taylor 1976-4-4 1055 Butte On n side of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 609 Comment
  SEINET10497328  Lithospermum californicum Mary Susan Taylor 1976-4-4 Taylor 1055 Butte Yellow Pine Forest, ca. 2 mi W of junc tion of Ponderosa Way and Hwy 32, ca. 5-15 ft S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata. 610 Comment
  CAS-BOT-BC342141  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  JEPS107767  Logfia gallica Lowell Ahart 2005-5-7 11787 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  CHSC2160  Lolium multiflorum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CHSC90644  Lolium multiflorum Lowell Ahart 2005-4-2 11698 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
  JEPS115281  Lolium multiflorum Lowell Ahart 2009-5-8 15669 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  JEPS88228  Lolium multiflorum Vernon H. Oswald and Lowell Ahart 1996-6-10 7734 Butte U.S. Fish and Wildlife Service parcel btw 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary, Sacramento River Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge 28 Comment
  SEINET10591974  Lolium perenne Lowell Ahart 1988-9-4 Ahart 6175 Butte On dry disturbed soil, along the N side of a branch of Last Chance Creek, E of the dirt road, about 1 mile W and little N of Bald Mountain. 1006 Comment
  CDA35635  Lolium temulentum J. R. Keck Jr. 1981-5-13 PDR# 330199 Butte Oroville. 0 Comment
  SEINET10592054  Lolium temulentum Lowell Ahart 1968-8-5 Ahart 18 Butte Peter Ahart Ranch, Honcut. Valley Grassland. 150 Comment
  SEINET10454487  Lomatium Mary Susan Taylor 1980-3-30 Taylor 2414 Butte Upper Bidwell Park, Chico. 244 Comment
  SBBG18209  Lomatium dasycarpum subsp. tomentosum M. Vincent 1962-4-15 175 Butte intersection of Pentz and US Hwy 40A, 13 mi S of Paradise Comment
  CHSC42610  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  CHSC21045  Lomatium utriculatum M. S. Taylor 1975-4-26 530 Butte In meadow on ne side of Knukle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  SEINET10454537  Lomatium utriculatum Mary Susan Taylor 1979-6-12 Taylor 2302 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC240444  Lonicera hispidula Lowell Ahart 1985-6-30 5082 Butte East of the road to the Forbestown Res. Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 868 Comment
  CAS-BOT-BC240684  Lonicera interrupta A. A. Heller; H. E. Brown 1902-5-14 5551 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC2474  Lonicera interrupta W. Fitzwater 1958-6-26 Butte Chico area. 457 Comment
  UC726746  Lotus argophyllus var. fremontii A. A. Heller 1940-6-5 15699 Butte between the bridge and mouth of the West Branch of the North Fork (along Feather River); Feather River Comment
  SEINET957207  Lotus balsamiferus Lowell Ahart 1987-1 5804 Butte On dry bare distrubed soil, near Big Bar Mountian Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. Comment
  SEINET10452683  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-5 Taylor 3614 Butte T20N R6E nw sec 11, Forbestown quad. W side of spur rd, ca. 0.5 mi N of its jct with 21N35Y-Bryant Ravine Rd, ca. 1 air mi N of Feather Falls community. Yellow Pine Forest; 2800 ft. 853 Comment
  UC80909  Lotus micranthus R. M. Austin May 1896 702 Butte Little Chico Creek Comment
  CDA13333  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13179 Butte Sierra Nevada; approx. 0.4 m from Hwy 162 on 22N89. Comment
  UC1129111  Lotus oblongifolius var. oblongifolius P. L. Johannsen 1936-7-17 943 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad. 1554 Comment
  RSA769807  Lotus purshianus var. purshianus L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15439 Butte South bank of Lindo Channel, about 50-100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 69 Comment
  UCD150370  Ludwigia palustris William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC21155  Ludwigia peploides M. S. Taylor 1975-10-3 925 Butte In slough at bridge over Big Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC26808  Ludwigia peploides M. S. Taylor 1978-5-7 1608 Butte In irrigation ditch in Richvale vernal pool area, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  CHSC43053  Lunaria annua Pauleen Broyles 1986-4-13 950 Butte Town of Paradise. East side of bike path (old RR bed), adjacent to fence, just south of Maxwell Road. Comment
  UC726688  Lupinus A. A. Heller 1942-4-26 16439 Butte near road from Cherokee to Oroville on the flattened treeless summit summit of Table Mountain Comment
  CHSC65560  Lupinus albicaulis L. P. Janeway 1995-6-6 4771 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
  CHSC929  Lupinus albicaulis L. Nelson 1935-5-25 Butte Humboldt road. 457 Comment
  CAS-BOT-BC198378  Lupinus albifrons Charles Piper Smith 1949-4-16 49104 Butte Bangor, 2.6 miles east, Yuba-Butte Bridge, Loma Rica Road Comment
  RSA325884  Lupinus andersonii var. andersonii L. Ahart, P. Ahart 1983-7-29 4250 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  CHSC50324  Lupinus apertus Vernon Oswald; Lowell Ahart 1990-5-29 4271 Butte Skyway 0.4 miles north of Inskip. 1475 Comment
  SEINET10484603  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23n,r5e,sec.18 nw 1/4. Pulga sw quad. Corolla pink. E side of road 23no2, ca 2 Miles e of rag dump, ca 6 air mile ne of magalia. Yellow pine forest, granitic Soil. Assoc.; Arctostaphylos truei, claytonia rubra 1189 Comment
  CHSC108836  Lupinus bicolor var. tridentatus Lowell Ahart 2012-4-17 17874 Butte Bare areas 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
  SEINET10490348  Lupinus grayi Mary Susan Taylor 1981-5-29 Taylor 3816 Butte T22n r5e ne1/4 sec 22. Pulga sw quad. Chino ridge, ca 1.2 mi. N of 22n31, ca 3 Air mi. Se of pulga. 853 Comment
  CHSC87798  Lupinus latifolius var. columbianus Paul Maslin 2004-4-15 15 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC93976  Lupinus latifolius var. columbianus R. D. Fischer 2004-6-20 776 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. On slope above creek. 1371 Comment
  CHSC34691  Lupinus nanus M. S. Taylor 1981-5-14 3717 Butte N side of 23N00.2, 2.5 mi sw of Merrimac on Oroville-Quincy Hwy. 975 Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  SEINET10940184  Lupinus pachylobus Johnson 1978-4-16 Johnson 2 B Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset rd At lassen avenue, 3 mi n of chico. At edge of moist pasture in gravelly loam With grass and other annuals of valley grassland. 61 Comment
  SEINET10939999  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC107577  Luzula cascadensis Lowell Ahart 2011-8-23 17652 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  RSA712826  Luzula comosa L. Ahart 2006-4-28 12547 Butte A part of the drainage of Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 318 Comment
  SEINET10472472  Luzula comosa Mary Susan Taylor, L. Hanson 1981-3-12 Taylor 3398 Butte T20N R6E sw sec 23. Forbestown quad. Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. Yellow Pine Forest; 2900 ft. 884 Comment
  UC600807  Luzula divaricata E. B. Copeland 1930-7-12 Butte Jonesville , highest Butte Creek Region (highest Butte Creek Region) Comment
  CAS-BOT-BC441206  Luzula macrantha Lowell Ahart 1982-5-8 3411 Butte Near the Forbestown Res. About 1/2 mile SW of the reservoir, about 4.5 miles NWE of Forbestown 800 Comment
  UC1609080  Luzula parviflora Lowell Ahart 1993-6-26 7011 Butte about 1/4 mi w of Lost Creek Reservoir (n of dirt road) 1036 Comment
  JEPS120131  Luzula subsessilis Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8 1/2 miles (air) northeast of Chico. Comment
  SEINET10905122  Luzula subsessilis Mary Susan Taylor 1976-4-24 Taylor 1076 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CHSC34819  Lychnis coronaria M. S. Taylor 1981-5-21 3785 Butte In Mayaro, ca. 2 mi ne of Pulga on Hwy 70. 487 Comment
  CHSC38295  Lychnis coronaria Vernon Oswald 1983-5-31 585 Butte Upper Bidwell Park, Chico, on the n bank of Chico Creek ca. 300 ft w of Day Camp. 91 Comment
  SEINET10498039  Lycopus americanus Lowell Ahart 1984-8-19 Ahart 4783 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  JEPS17912 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 Feather River); Feather River 48 Comment
  CDA5126  Lythrum salicaria G. D. Barbe 1982-8-11 3893 Butte At the northeast corner of State Wildlife Area, west of Pacific Heights Road, 1/4 mile west of end of Welsh Road, ca 2 miles south of Oroville. 0 Comment
  UCD102941  Lythrum salicaria Carl M. Wick 1975-8-15 s.n. Butte Oroville. Comment
  CHSC111173  Lythrum tribracteatum Lowell Ahart 2013-6-18 18806 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  SD5627  Madia bolanderi E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CHSC36529  Madia elegans L. Ahart 1982-6-4 3543 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 304 Comment
  RSA691019  Madia elegans subsp. elegans L. Ahart 2003-6-30 10321 Butte North of small stream, on the east side of Ponderosa Way, about 2.5 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown 578 Comment
  CHSC101120  Madia elegans subsp. vernalis Lowell Ahart 2009-5-23 15726 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  CHSC34031  Madia elegans subsp. vernalis L. Ahart 1981-7-7 2927 Butte Along edge of Black Bart Rd, ca. 1/2 mi w of the Oroville-Forbestown Rd, w of Forbestown. 700 Comment
  CHSC93862  Madia exigua Lowell Ahart 2006-6-9 12650 Butte On the east 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
  CAS-BOT-BC344310  Madia exigua A. A. Heller 1928-5-27 14561 Butte Along the Neal road, Paradise Comment
  CHSC84184  Madia gracilis Lowell Ahart 2003-6-30 10323 A Butte Near the small stream, on the southeast side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  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
  SEINET10872066  Madia rammii Lowell Ahart 1985-5-6 Ahart 4938 Butte About 2 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  UC1442609  Madia subspicata Lowell Ahart 1978-7-15 Butte near North Honcut Creek; Honcut, Peter Ahart Ranch 50 Comment
  SEINET10899356  Mahonia dictyota Mary Susan Taylor 1981-4-10 Taylor 3525 Butte T22N R4E sw sec 12, Pulga SW quad. 8 side of private rd. ca. 1/8 mi E of 4 mi N of Jarbo Gap on Hwy 70, ca. 19 air mi N of Oroville. Yellow Pine Forest; 3000 ft. 914 Comment
  CHSC42809  Maianthemum racemosum L. P. Janeway 1987-7-4 2433 Butte Along the Concow Rd towards Jones Mdw ca 1 mi from Bald Mtn. 1786 Comment
  CAS-BOT-BC512734  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  CHSC109571  Malacothrix floccifera L. P. Janeway 2012-6-7 10859 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
  SBBG128805  Malacothrix floccifera L. Ahart, J. Dittes, J. Guardino 2013-4-26 18627 Butte rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams 566 Comment
  CHSC38554  Malva nicaeensis Vernon Oswald 1983-4-25 366 Butte Upper Bidwell Park, Chico, at the edge of Parking Area C at the w end of Horseshoe Lake. 100 Comment
  CHSC84130  Malva parviflora Lowell Ahart 2003-5-9 10122 Butte Along the southwest corner of a prune orchard, on the north side of Evans Reimer Road, about 3/4 mile west of Block Road, about 3 miles (air) southwest of Gridley. 24 Comment
  JEPS118074  Malva parviflora Lowell Ahart 2011-5-9 17352 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs 29 Comment
  RSA157758  Marah fabacea I. L. Wiggins 1925-3-22 1468 Butte Chico Creek Canyon about 5 miles above Chico. Comment
  SEINET10448085  Marah fabacea Mary Susan Taylor Taylor 986 Butte Bidwell Park, Chico. 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
  CHSC101673  Marah watsonii Lowell Ahart 2009-4-26 15648 Butte On the east side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC90011  Marah watsonii Ross Rowland 2001-4-2 29 Butte At the end of Billie Trail, about 10 ft above park bench, in Billie Park, Paradise. 617280mE/4403340mN/zone 10N. 530 Comment
  CHSC60988  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte At Camp 18. 1158 Comment
  CHSC42751  Marsilea vestita Lowell Ahart 1987-8-8 5856 Butte Along North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC82398  Marsilea vestita subsp. vestita Lowell Ahart 2002-5-15 9659 Butte On the bottom and sides of a pond, about 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC46313  Matricaria occidentalis Vernon Oswald 1989-6-6 3799 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Waste area just n of the lighted parking area on the main ranch road n of Butte Creek-Little Dry Creek. 18 Comment
  CHSC949  Medicago polymorpha A. Koopman 1929-4-25 Butte Butte Creek. 76 Comment
  JEPS115301  Medicago polymorpha Lowell Ahart 2009-5-8 15662 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
  CDA38818  Medicago praecox L. Ahart 2012-4-9 17836 Butte Around the edged of a small vernal pool, west of the South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. Comment
  CDA4225  Medicago scutellata H. K. Wagnon 1956-6-1 Butte In vicinity of Chico Plant Intro. Gardens. 0 Comment
  CHSC61542  Melica aristata Lowell Ahart 1993-6-26 7022 Butte On the east side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CAS-BOT-BC269374  Melica californica Lowell Ahart 1987-5-9 5582 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CHSC42439  Melica californica Lowell Ahart 1987-5-9 5582 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga. 365 Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CAS-BOT-BC281301  Melica harfordii Lowell Ahart 1983-7-29 4231 Butte Along the dirt road, ca 0.25 mile W of Milsap Bar, ca 25 miles NE of Oroville 500 Comment
  CHSC41168  Melica harfordii L. P. Janeway; Gary Benson, Randy Harrison 1984-9-12 Butte Plumas N.F. ECOS plot 11-052. On ridge between Concow Res and N Fk Feather R. 865 Comment
  SEINET10508160  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC6105  Melica torreyana A. R. Jaegel 1968-4-24 141 Butte On roadside, 1 mi w of Centerville on Humbug Rd. Comment
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  JEPS102339  Melilotus officinalis Lowell Ahart 2001-6-1 8747 Butte 8 mi W of Biggs (S side of Biggs - Princeton road, about 1/2 mi E of Butte Creek) 21 Comment
  CDA13827  Mentha canadensis G. F. Hrusa, T. D. Wilfred 1996-9-5 13555 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  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
  CHSC116316  Mentha pulegium Lowell Ahart 2015-11-18 20661 Butte Marsh like area, on the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC50998  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  SBBG128021  Mentha spicata L. Ahart 2011-8-17 17624 Butte ca. 20 yards S of the trail, S of the crossing and on the E side of Big Chico Crk, ca. 50 yards W of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 203 Comment
  JEPS118060  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC38540  Mentzelia laevicaulis Vernon Oswald 1983-8-2 946 Butte Upper Bidwell Park, Chico, on the n side of Lindo Channel ca. 100 ft e of Manzanita Ave. 79 Comment
  SD6717  Mertensia sibirica Mrs. R. M. Austin 1882-1 Butte Comment
  CHSC43753  Micranthes bryophora Vernon Oswald 1984-7-12 1576 Butte High Lakes Rd. near the Plumas Co. line. 1981 Comment
  CAS-BOT-BC429041  Micranthes nidifica Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  SFV10349  Micropus californicus M. L. Vincent 1963-6-6 373 Butte In mountain meadow, 1 mile west from Nelson Bar Road at stream. Comment
  SD116532  Micropus californicus var. californicus Barbara Ertter, Lowell Ahart and Jeff Strachan 1980-5-6 3279 Butte Peter Ahart Ranch; 2.5 miles northnortheast of Honcut. 29 Comment
  CAS-BOT-BC348880  Microseris douglasii subsp. douglasii Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC24770  Microsteris gracilis P. J. Welch 1976-4-11 7 Butte Ca. 2 yds s of Sycamore Creek and ca.100 yds w of Cohasset Rd., 2.35 mi n of Chico. 60 Comment
  SEINET12326990  Microsteris gracilis Unknown 1984-1 17 Butte Stilson Canyon Rd, ca 4 km W of jct of Hwys 99 and 32 95 Comment
  POM196544  Microsteris gracilis subsp. gracilis H. F. Copeland 1929-6-12 1202 Butte Jonesville. 1524 Comment
  CHSC66444  Mimetanthe pilosa Vernon H. Oswald 1996-6-10 7741 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
  HSC72762  Mimulus aurantiacus var. grandiflorus M. S. Taylor 1981-4-8 3481 Butte E side of Dark Canyon Rd., 2.2 mi. S of jct. with Big Bend Rds., 3 mi. S of Jarbo Gap on Hwy. 70 427 Comment
  UC1012167  Mimulus aurantiacus var. grandiflorus F. W. Pennell and A. A. Heller 1940-6-5 25677 Butte 10-12 mi above Oroville (Route 24); Feather River 182 Comment
  LA28066  Mimulus bicolor A. A. Heller; Howard S. Brown 1902-5-12 5545 Butte Grade between Clear Creek and Paradise Comment
  UC1609082  Mimulus breweri Lowell Ahart 1993-6-20 6982 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10570221  Mimulus douglasii Mary Susan Taylor 1979-3-31 Taylor 1973 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  CDA41428  Mimulus glaucescens Schoenig 1998-7-5 98 -76 Butte East roadside of Highway 32, circa 1 mile north of road to Butte Meadows. Vicinity of Loma. Comment
  POM5129  Mimulus glaucescens E. B. Copeland 1903-5-15 3177 Butte Chico Comment
  UC103740  Mimulus glaucescens Mrs. R. M. Austin 1890-1 159 Butte Little Chico Canyon Comment
  UC1778563  Mimulus glaucescens S. E. Schoenig 1998-7-5 98 -76 Butte Wet seep. E roadside of Hwy 32, ca. 1mi N of road to Butte Meadows. Vicinity of Lomo. 1097 Comment
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Aug 31 2012
  CHSC117442  Mimulus guttatus Lowell Ahart 2016-5-24 20862 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, 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
  JEPS114718  Mimulus guttatus Lowell Ahart 2008-5-21 14774 Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 246 Comment
  LA38958  Mimulus guttatus Frank W. Peirson; 1926-6-21 6775 Butte Butte Meadows, Humbolt Road 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
  UC65831  Mimulus kelloggii A. A. Heller 1902-5-6 5464 Butte Clear Creek P.O. Clear Creek Comment
  UCD96006  Mimulus kelloggii Dena Grossenbacher; Brian Green 2008-4-8 758 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  CDA41713  Mimulus kelloggii L. Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  POM43693  Mimulus latidens C. C. Bruce 1897-05 2103 Butte Near Chico. Comment
  JEPS11922  Mimulus microphyllus F. W. Pennell, A. A. Heller 1940-6-4 25668 Butte above Richardson Springs 182 Comment
  UC1778564  Mimulus moniliformis S. E. Schoenig 1998-7-5 98 -77 Butte Wet gravely seep. E roadside of Hwy 32, ca. 1mi NE of road Forest Ranch. Comment
  CHSC113404  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  RSA4114  Mimulus primuloides E. B. Copeland 1930-7-15 460 Butte Jonesville. 1500 Comment
  RSA535418  Mimulus torreyi David M. Thompson 1988-6-7 936 Butte NW of De Sabla. 0,25 mi N of Doe Mill Road along Garland Road. 600 Comment
  SEINET10830521  Mimulus torreyi Mary Susan Taylor 1978-7-21 Taylor 1813 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  RSA21489  Mimulus tricolor Carl B. Wolf 1937-5-14 8671 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 Comment
  CAS-BOT-BC174595  Minuartia californica H. E. Brown 1897-3-3 143 Butte Near Clear Creek 53 Comment
  HSC67511  Minuartia californica J. P. Smith 1973-3-22 5928 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC29782  Minuartia douglasii M. S. Taylor 1980-5-27 2696 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 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
  SEINET11934609  Minuartia douglasii L. P. Janeway 1988-1 2970 Butte Near the road to French Cr 0.6 mi S of Coyote Gap 1219 Comment
  SD2102  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville, damp woods 1500 Comment
  UC600613  Mitella pentandra E. B. Copeland 1929-7-16 Butte Jonesville 1500 Comment
  CDA3373  Mollugo verticillata L. P. Janeway, B. Castro 1999-6-4 6451 Butte Sacramento Valley; East side of the Sacramento River 1.4 km southeast of the Ord Ferry Bridge. Comment
  JEPS95930  Mollugo verticillata Lowell Ahart 1999-8-13 8176 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC219942  Monardella breweri subsp. lanceolata Mrs. J. H. Morrison 1932-6-12 s.n. Butte Above Durham Comment
  CAS-BOT-BC219944  Monardella breweri subsp. lanceolata Lowell Ahart 1989-5-31 6330 Butte North of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  SFV3186  Monardella glauca M. L. Vincent 1960-9-7 100 Butte Sierra Nevada Old Stage Road near Stearn Road, 3 miles south of Paradise. 530 Comment
  JEPS110081  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
  CAS-BOT-BC215538  Monardella odoratissima subsp. pallida A. A. Heller 1917-7-29 12860 Butte Summit above Jonesville 2133 Comment
  CHSC52229  Monardella odoratissima subsp. pallida L. P. Janeway; R. A. Schlising 1988-7-22 3046 Butte Just below saddle between Coon Hollow and Chips Cr. 1920 Comment
  UC525885  Monardella odoratissima subsp. pallida H. F. Copeland 1932-8-17 Butte The Summit Jonesville 2000 Comment
  CAS-BOT-BC220452  Monardella sheltonii Lewis S. Rose 1951-6-26 51019 Butte Jarboe [Jarbo] Pass, 22 mi. n. of Oroville 579 Comment
  CAS-BOT-BC220454  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte On Highway #24, 23 miles east of Oroville Comment
  CHSC67981  Monardella sheltonii James D. Jokerst 1989-7-3 3124 Butte Hwy. 70 and Pulga Rd. Comment
  SEINET4173692 Image available Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte 23 miles from Oroville east of Jarboe Pass on the Feather River Hwy Comment
  RSA97974  Monochoria vaginalis J. M. Tucker, B. J. McCaskill, W. A. Harvey 1954-9-15 2753 Butte In experimental rice plots, Biggs Rice Station. Comment
  RSA755352  Montia fontana L. P. Janeway 2008-3-18 9237 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC56080  Montia fontana subsp. amporitana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. In the lawn. 70 Comment
  CHSC32844  Montia fontana subsp. chondrosperma D. J. Everett 1981-4-16 15 Butte North Table Mountain, s side of Campbell Creek, Beatson Hollow, ca. 6.5 mi n of Oroville, ca. 20 mi se of Chico. 335 Comment
  CHSC7114  Montia parvifolia Paul Kinnison 1969-5-6 11 Butte On Highway 70 e 200 yds. up Bear Creek where it hits the road. Just before the abandon tunnel. Comment
  CAS-BOT-BC445134  Montia parvifolia Mrs. C. C. Bruce 1897-6-1 1117 Butte Forest Ranch Comment
  CAS-BOT-BC73671  Morus alba John Thomas Howell 1961-9-22 36738 Butte Sierra Nevada - bank of Feather River, Oroville. 53 Comment
  CHSC109094  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  CAS-BOT-BC264287  Muhlenbergia andina Lowell Ahart 1988-7-31 6147 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City 914 Comment
  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
  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
  UC569481  Muhlenbergia filiformis H. S. Yates 1936-8-13 6100 Butte Butte Meadow Paynes Creek Quadrangle 1341 Comment
  CHSC111402  Muhlenbergia mexicana Lowell Ahart 2012-6-21 18217 Butte About 1/4 of a clump, on dry soil, on the south side of Big Chico Creek, about 20 yards off the Freeway, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  UC1563262  Muhlenbergia mexicana unknown 1990-9-30 6610 Butte 1/8 mi ne Canyon Creek Bridge across Lake Oroville (creek bottom below high water line of lake); East Fork of Canyon Creek 243 Comment
  CHSC43727  Myosurus minimus Lowell Ahart 1981-4-6 2747 Butte South-east of the Gray Lodge Headquarters, about 8 miles south-west of Gridley. 28 Comment
  CHSC46875  Myriophyllum spicatum Vernon Oswald 1989-9-6 3986 Butte West end of West Liberty Rd along the n boundary of Gray Lodge Wildlife Area. 19 Comment
  CHSC38886  Najas gracillima Vernon Oswald 1983-7-21 893 Butte Upper Bidwell Park, Chico, along the n edge of Horseshoe Lake. 100 Comment
  SEINET10871965  Narthecium californicum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  SEINET12050272  Narthecium californicum L. Ahart, Ahart, P. 1984-1 4760 Butte about .5mi E of Bald Mt., about 5mi NE of Stirling City 1750 Comment
  CHSC34983  Navarretia divaricata R. A. Schlising 1979-6-4 3435 Butte S of Cohasset off of Cohasset Highway. Comment
  CHSC34984  Navarretia divaricata R. A. Schlising; R. Banchero 1980-6-17 3739 Butte N of Magalia at Old Coutelenc Site, along Coutelenc Road, 1.7 mi S of jct with Skyway at Lovelock. Roadside. Comment
  CHSC93987  Navarretia divaricata subsp. divaricata R. D. Fischer 2004-6-20 780 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  CHSC27048  Navarretia filicaulis Lowell Ahart 1978-7-2 1780 Butte Along Robinson Mill Road, Bangor. Near the edge of the road. 350 Comment
  SEINET10496824  Navarretia filicaulis Mary Susan Taylor 1979-6-12 Taylor 2297 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  UC133843  Navarretia filicaulis Mrs. R. M. Austin 1883-1 Butte Comment
  CAS-BOT-BC230299  Navarretia heterandra Peter H. Raven 1953-5-9 5423 Butte 7 miles SE of Chico on Oroville Road Comment
  CHSC109730  Navarretia heterandra B. Castro 2006-5-25 1534 Butte Sacramento Valley/S. Cascade Range Foothill edge. Ca 7 air mi SE of Chico, ca 1.6 air mi NE of Hwy 99, in lower end of Hamlin Canyon. 94 Comment
  CHSC36715  Navarretia heterandra D. H. Ikeda 1981-5-11 359 Butte Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  CHSC60128  Navarretia heterandra B. Castro; L. P. Janeway 1992-5-15 453 Butte In bottom of canyon SE of Neal Road, ca 100 ft NW of intermittent creek. 73 Comment
  JEPS107886  Navarretia heterandra Lowell Ahart 2005-5-28 11815 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville 91 Comment
  CHSC20514  Navarretia intertexta M. S. Taylor 1975-6-25 799 Butte Above dam area, ca. 1/2 mi n of Richardson Springs Hotel, ca. 7 mi ne of Chico. 243 Comment
  JEPS127016  Navarretia intertexta Lowell Ahart 2016-5-24 20864 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  UCSB63838  Navarretia leptalea Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  UC426937  Navarretia leptalea subsp. leptalea E. B. Copeland 1930-6-28 444 Butte Scotch John meadow , Scotch John Meadow (Jonesville) 1650 Comment
  UC196266  Navarretia leptalea subsp. leptalea A. A. Heller 1914-7-22 11590 Butte Sierra Nevada between La Loma and Little Summit; Sierra Nevada btw La Loma and Little Summit 1219 Comment
  CHSC4163  Navarretia leucocephala R. Carter 1966-4-21 350 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side of Old Cherokee Rd., 6.55 mi. from Chico Rd., in vernal pool. 274 Comment
  CHSC7090  Navarretia leucocephala R. Smallwood 1969-5-1 3 Butte 20 yds. e of main entrance to Chico Municipal Airport, on Cohasset Highway 3 mi ne of Chico. 36 Comment
  POM65124  Navarretia leucocephala subsp. leucocephala Copeland 1903-5-15 3047 Butte Chico. Comment
  UCR66594  Navarretia leucocephala subsp. leucocephala H. F. Copeland 1923-5-7 0612 Butte Sacramento Valley, Blavo 46 Comment
  CDA40121  Navarretia nigelliformis T. C. Fuller 1962-5-17 8706 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC12747  Navarretia pubescens L. V. Ritter 1969-5-5 262 Butte Ca 200 yds. w of Horseshoe Lake, Bidwell Park, 50 yds. n of the Park Rd. Comment
  CHSC28162  Navarretia pubescens J. D. Jokerst 1979-5-28 225 Butte 1.6 mi S. of Waylan Rd (1.2 mi S of intersection of Waylan Rd and Neil Rd.). 350 Comment
  SEINET10869735  Navarretia squarrosa Mary Susan Taylor 1978-5-7 Taylor 1593 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC33128  Navarretia subuligera J. D. Jokerst 1981-5-11 1310 A Butte Top of Doe Mill Ridge. 457 Comment
  CHSC12060  Navarretia tagetina K. J. Hislop 1970-5-10 127 Butte Found on Hwy. 70 ca. 5 mi. n of Yankee Hill. 213 Comment
  CHSC36706  Navarretia tagetina D. H. Ikeda 1980-5-8 347 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. Comment
  JEPS127003  Navarretia tagetina Lowell Ahart 2016-5-24 20848 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC46820  Nemacladus capillaris R. A. Schlising; R. Banchero 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  CHSC44512  Nemacladus interior Lowell Ahart 1988-7-3 6118 Butte Along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  SEINET3450874  Nemacladus interior Unknown 2003-7-10 10371 Butte Ponderosa Dam, Ponderosa Dam, about 1.5 air miles east, both sides of the dirt road to the power generator, north side of Ponderosa Reservoir 490 Comment
  UC726899  Nemophila heterophylla A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  RSA32941  Nemophila heterophylla A. A. Heller 1937-5-31 s.n. Butte Yankee Hill Comment
  RSA3796  Nemophila heterophylla A. A. Heller 1926-3-24 13912 Butte Along Chico Creek about six miles east of Chico. Comment
  SEINET5520962  Nemophila heterophylla H. P. Chandler 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada 150 Comment
  CHSC4086  Nemophila menziesii Kathy Sommarstrom 1967-4-12 21 Butte Found on left hand side of Honey Run Rd on South end of bridge next to covered bridge. 76 Comment
  CHSC90484  Nemophila menziesii subsp. menziesii Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11677 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico. 236 Comment
  CHSC51050  Nemophila pedunculata Pauleen Broyles 1987-2-22 996 Butte The Nature Conservancy Vina Plains Preserve. E of Sheep Camp Ditch in 'safe' pasture, on a rise. Comment
  CHSC90461  Nemophila pedunculata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11678 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico. 236 Comment
  CHSC39097  Nemophila spatulata R. A. Schlising; K. Tarp 1983-8-12 4449 Butte N and E of Philbrook Reservoir in N part of county, about 1.2 mi W of Plumas County line on road to Carr Mine; in crevices and draws of slate outcrop. 1981 Comment
  CDA5772  Nicotiana alata L. C. Going 1964-4-2 Butte 694 Roberts Road, Paradise. 0 Comment
  CHSC49437  Nicotiana glauca Vernon Oswald 1987-5-3 2371 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  SEINET3992318  Odontostomum hartwegii Barbara Ertter, Lowell Ahart and Jeff Strachan 1980-5-6 3283 Butte Peter Ahart Ranch ca. 2.5 mi N.-N. E. of Honcut between Oroville and Marysville, stream through Valley Grassland and grainfield 30 Comment
  CHSC54160  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte Joie Osgood Ranch, about 2 1/2 miles north and 3 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 91 Comment
  CHSC26829  Orobanche fasciculata M. S. Taylor 1978-5-6 1621 Butte Ca. 1/4 mi e of Cohasset Rd, ca. 8 mi n of Chico. 137 Comment
  UC1586604  Orobanche fasciculata Vernon H. Oswald and Lowell Ahart 1991-5-13 4585 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). Comment
  SEINET10500394  Orobanche fasciculata var. franciscana Mary Susan Taylor 1976-4-27 Taylor 1086 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  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
  SEINET12326963  Orthocarpus attenuatus R. E. Preston 1979-1 18 Butte N of Cherokee Rd, 5 mi N of Oroville 366 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
  POM43592  Orthocarpus erianthus C. C. Bruce 1897-03 2089 Butte Chico. Comment
  CHSC42635  Osmorhiza chilensis Vernon Oswald 1985-6-17 1840 Butte Beside a logging road 0.1 mi e of the trailhead to Feather Falls. 768 Comment
  JEPS117519  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 455 Comment
  SEINET10840954  Osmorhiza chilensis Mary Susan Taylor 1977-6-25 Taylor 1378 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  RSA0060803  Oxalis pes-caprae Lowell A. Ahart, John Dittes, Josephine Guardino 2012-4-6 17808 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, city of Chico. 61 Comment
  CAS-BOT-BC316887  Packera eurycephala var. lewisrosei A. Heller 1938-5-28 15115 Butte 23 miles from Oroville on Highway 24. Comment
  CHSC99562  Packera eurycephala var. lewisrosei L. P. Janeway 2008-5-26 9388 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  JEPS73765  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  UC596487  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC43941  Papaver somniferum Vernon Oswald 1988-4-29 3290 Butte Meridian Rd., 0.4 mi e and then n of Hwy 99. On the edge of the road. 57 Comment
  JEPS105999  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. Comment
  RSA126975  Paspalum dilatatum H. S. Yates 1936-8-14 6128 Butte 2 miles S. S. W. of Nielson 30 Comment
  CHSC34181  Pedicularis racemosa L. Ahart 1981-9-15 3164 Butte Above the steep road cut (20 m), along French Creek, ca. 1/2 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC11888  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  RSA500413  Pellaea brachyptera Vernon H. Oswald 1989-5-28 3786 Butte Logging road paralleling the west side of Butte Creek, 3.2 miles south of Humboldt Road, nead Butte Meadows. 1293 Comment
  CAS-BOT-BC67553  Pellaea mucronata Lowell Ahart 1985-6-17 5055 Butte 8 miles north-east of Feather Falls, 1 1/2 miles east of Camp 18 975 Comment
  CHSC3223  Pellaea mucronata Virginia Hagaman 1966-3-28 93 Butte On Table Mountain. Comment
  SEINET10529810  Pellaea mucronata Mary Susan Taylor 1980-4-27 Taylor 2547 Butte T23N R3E ne sec 27. Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Rd; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  UC1609391  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte ca. 9 air mile nw of Lost Creek Reservoir Dam (Mooreville Ridge, Jackass Flat); Jackass Flat, Mooreville Ridge 1158 Comment
  CHSC88056  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1 mile s. of this junction. 643 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  RSA31965  Penstemon heterophyllus subsp. heterophyllus A. A. Heller 1940-6-5 15701 Butte Along the Feather River Hwy east of the first river crossing east of Oroville. Comment
  POM21002  Penstemon laetus var. leptosepalus Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  SEINET5329211 Image available Penstemon newberryi var. newberryi S. Dean 1979-4-24 s.n. Butte Hwy 70, Feather River Canyon, approx. 30 mi W of Quincy 914 Comment
  CAS-BOT-BC245637  Penstemon personatus Lowell Ahart 1986-7-2 5336 Butte About 0.5 mi. S of Bald Mountain, ca. 4.5 mi. NE of Stirling City, Sierra Nevada 1615 Comment
  SEINET10548098  Penstemon procerus subsp. formosus Mary Susan Taylor 1980-7-6 Taylor 3086 Butte T26N R4E nw sec 29, Butte Meadows quad; N side of Old Humboldt Rd, just W of Butte Meadows Ranger Station. With R.A. Schlising. 1341 Comment
  CAS-BOT-BC239453  Penstemon rydbergii var. oreocharis C. S. Robinson 1929-7-4 124 Butte Lassen National Forest, Colby Mdw. 1219 Comment
  CDA41988  Penstemon rydbergii var. oreocharis T. C. Fuller 1962-7-12 9198 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC32691  Pentagramma triangularis M. S. Taylor 1981-3-18 3416 B Butte S side of Hwy 70 near Pulga bridge. 487 Comment
  CHSC32722  Pentagramma triangularis M. S. Taylor 1981-4-8 3483 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  CHSC51052  Pentagramma triangularis Pauleen Broyles 1987-2-7 994 Butte Along the bank of Pine Creek. Comment
  CAS-BOT-BC77175  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1939 Butte Ca. 1 mi N of jct. of north fork Feather River, along an old road, ca. 10 mi N of Oroville. 304 Comment
  CHSC27954  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-3-20 1939 Butte Ca. 1 mi n of jct of north fork Feather River, ca. 10 mi n of Oroville. 304 Comment
  CHSC38251  Pentagramma triangularis subsp. triangularis Vernon Oswald 1983-4-4 274 Butte Upper Bidwell Park, Chico, on the north rim ca. 1800 ft w of the power lines. 182 Comment
  CHSC73399  Perideridia howellii B. Castro 1995-9-10 611 Butte Watson Cabin Meadow. Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  CHSC108170  Perideridia kelloggii L. P. Janeway 2011-8-18 10664 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  CHSC102825  Perideridia oregana Lowell Ahart 2009-6-30 15957 Butte West of the Guardian Rock Trail, about 100 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC33964  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-16 4204 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC45861  Persicaria lapathifolia Lowell Ahart 1974-11-9 680 Butte On the bottom of a drained rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC94597  Persicaria lapathifolia Lowell Ahart 2006-9-11 13289 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
  JEPS124337  Persicaria maculosa Lowell Ahart 2015-10-16 20556 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  UCD99567  Persicaria maculosa A. A. Heller 1914-8-20 11690 Butte 8 miles north of Oroville Comment
  SJSU5410  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  SEINET10932244  Petrorhagia velutina Mary Susan Taylor 1982-5-2 Taylor 4382 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  RSA32014  Phacelia corymbosa A. A. Heller 1938-5-28 15118 Butte On the Feather River Highway, 23 miles from Oroville. Comment
  CHSC39112  Phacelia egena B. Castro 1982-4-9 13 Butte Rare, on steep e-facing hillside on w side of Pentz-Magalia Hwy, ca 12 mi ne of Oroville. 256 Comment
  CHSC71118  Phacelia egena Jan Monelo 1989-4-11 9 Butte Ca 75 yds w of Covered Bridge on w side of Honey Run Rd, ca 7 mi e of Chico. 121 Comment
  UC1228349  Phacelia heterophylla subsp. virgata L. R. Heckard 1956-8-6 821 Butte about 6 mi s Stirling City (along road to Magalia) 792 Comment
  SEINET10935994  Phacelia imbricata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4117 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville Comment
  UC600781  Phacelia mutabilis H. F. Copeland 1930-7-18 Butte Jonesville Comment
  RSA21534  Phacelia purpusii Carl B. Wolf 1937-5-17 8720 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  SD6827  Phacelia purpusii R. M. Austin 1883-1 Butte Comment
  CHSC6182  Phalaris aquatica J. Wheeler 1968-5-16 356 Butte S side of e approach to the hwy. 32 Sacramento River Bridge. 45 Comment
  CHSC49564  Phalaris brachystachys Vernon Oswald 1987-5-1 2362 Butte Rancho Aquas Frias. Collected along Goodspeed-Watt Rd. at the Western Canal. 39 Comment
  POM207757  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  CHSC1644  Philadelphus lewisii 1954-5-30 Butte Below Concow reservoir. 609 Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  JEPS115611  Philadelphus lewisii Lowell Ahart 2009-5-23 15723 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  SD3827  Phlox caespitosa E. B. Copeland 1931-6-19 Butte Jonesville, on and below crags west of The Summit 2100 Comment
  CHSC35096  Phlox speciosa subsp. occidentalis Robert A. Schlising; Coleta Lawler 1981-4-12 4025 Butte E of Oroville. 365 Comment
  UCD102042  Phoradendron bolleanum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  UCR143102  Phoradendron bolleanum subsp. densum H. F. Copeland 1928-4-3 1000 Butte Near Magalia 732 Comment
  CHSC38542  Phoradendron serotinum subsp. macrophyllum Vernon Oswald 1983-4-24 362 Butte Upper Bidwell Park, Chico, on the n edge of Chico Creek ca. 300 ft. e of Parking Area H at Day Camp. 91 Comment
  JEPS127077  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2016-2-22 20740 Butte On the east side of Ahart Road, about 100 yards north of the intersection of Smullin Road and Ahart Road east side of Honcut, about 13 miles south of Oroville. Comment
  CAS-BOT-BC141246  Phoradendron serotinum subsp. tomentosum A. A. Heller 1914-1-28 11157 Butte Hills 5 miles E of Chico Comment
  CHSC106605  Photinia serratifolia L. P. Janeway 2011-4-20 10236 Butte Sacramento Valley. Lower Bidwell Park, Chico; near northwest edge of the park, near Vallombrosa Ave between Madrone Ave and Crister Ave. 73 Comment
  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
  RSA423763  Physalis lancifolia H. F. Copeland 1923-8-13 809 Butte Nelson. Comment
  CAS-BOT-BC76938  Pilularia americana Lowell Ahart 1980-4-19 2092 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC28827  Pilularia americana J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 419 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd ( at e edge of mt). 381 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
  JEPS99049  Pilularia americana Lowell Ahart 2002-4-14 9482 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  CAS-BOT-BC78286  Pinus attenuata Lowell Ahart 1987-5-11 5611 Butte along Lumpkin Road, about 1.5 miles north-east of Forbestown Road 426 Comment
  CHSC32747  Pinus attenuata M. S. Taylor; L. Hanson 1981-4-16 3548 Butte Both sides of rd 21N80, ca. 1 mi nw of its jct with Zink Rd, ca. 1.5 air mi nw of Big Bald Rock, ca. 2 air mi e of Lake Madrone. 883 Comment
  SD23  Pinus contorta subsp. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  UC398881  Pinus monticola E. B. Copeland 1929-7-17 331 Butte above Jonesville 2000 Comment
  CHSC79  Pinus sabiniana M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC88240  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  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
  CHSC2351  Piperia transversa V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  SEINET10529837  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1981 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  CAS-BOT-BC169563  Plagiobothrys M. S. Taylor 1974-3-3 68 Butte Burton's Mesa, ca 3 mi E of Chico on the Skyway to Paradise 60 Comment
  CHSC23463  Plagiobothrys J. R. Lee 1974-4-22 3 Butte At edge of pond 10 yds n of Skyway roadside and 1.6 mi e of Chico city limits. 76 Comment
  JEPS124178  Plagiobothrys Lowell Ahart 2015-3-10 19944 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  JEPS119688  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte About 200 yards southwest of the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC47997  Plagiobothrys bracteatus Vernon Oswald 1985-4-29 1734 Butte Oroville-Quincy Hwy 0.9 mi s of Canyon Creek Bridge. 304 Comment
  CHSC50991  Plagiobothrys cusickii Lowell Ahart; Vern Oswald 1990-7-5 6550 c Butte In a small meadow, on the north side of Humboldt Road just west of Scout Road, Butte Meadows. 1325 Comment
  CHSC28982  Plagiobothrys glyptocarpus R. A. Schlising 1980-3-23 3519 Butte E of Chico and SW of Paradise. 289 Comment
  JEPS77831 Image available Plagiobothrys glyptocarpus A. A. Heller 1914-5-16 11202 Butte 8 mi n Oroville Comment
  CHSC25484  Plagiobothrys greenei L. Ahart 1977-4-15 1297 Butte Found in the bottom of swales and vernal pools. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35062  Plagiobothrys greenei R. A. Schlising 1981-4-6 4016 Butte Along Hwy 70 S of Oroville, 0.2 mi S of jct with Cox Lane; roadside. 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
  UC625523  Plagiobothrys greenei Frank W. Gould 1938-4-23 310 Butte two mi n Chico 60 Comment
  CAS-BOT-BC228252  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 Comment
  CHSC31256  Plagiobothrys hispidulus R. A. Schlising; R. Banchero 1980-7-14 3892 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows); in meadow/pasture. 1511 Comment
  CHSC58891  Plagiobothrys hispidulus Lowell Ahart 1992-7-21 6822 Butte On a gravel bar along Coon Hollow Creek, about 2 1/4 (air) miles north-east of Philbrook Reservoir. 1706 Comment
  CHSC111375  Plagiobothrys nothofulvus Lowell Ahart 2012-5-2 17973 Butte On damp soil, 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 3/4 mile east of Chico. 85 Comment
  UC196322  Plagiobothrys nothofulvus A. A. Heller 1914-4-13 11283 Butte 8 mi n Oroville Comment
  CHSC118549  Plagiobothrys scriptus Lowell Ahart 2017-2-27 21383 Butte Along a poor road, open pasture field, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  SEINET516433  Plagiobothrys scriptus Lowell Ahart 1977-1 1275 Butte Normal size plant, growing on damp to dry gravelly red soil along the edge of small swales, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC90483  Plagiobothrys shastensis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11672 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
  UCR70803  Plagiobothrys stipitatus C. B. Wolf 1937-5-14 08674 Butte Sacramento Valley, 5 mi NW of Chico on [Hwy 32; Nord Ave.] Hamilton City Rd 46 Comment
  POM225866  Plagiobothrys stipitatus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC90978  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-5-11 11807 Butte Bottom of a vernal pool, south of a small stream, open pasture field, about 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  JEPS107358  Plagiobothrys stipitatus var. micranthus Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11665 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  SBBG128017  Plagiobothrys stipitatus var. micranthus L. Ahart 2010-5-14 16653 Butte W side of the old Humboldt Rd, Disc Golf Area, ca. 150 yards N of the entrance to the Disc Golf Area, ca. 40 yards W of Hwy 32, upper Bidwell Park, ca. 5 mi (air) NE of Chico 395 Comment
  CHSC82239  Planodes virginica Lowell Ahart 2002-3-28 9455 Butte In a rice field, on the north side of Gridley Road, about 5 miles west of Gridley. 21 Comment
  CHSC96378  Planodes virginica Lowell Ahart 2007-3-7 13586 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/10 miles east of Honcut, about 12 miles south of Oroville. 31 Comment
  RSA0118696  Planodes virginica Lowell A. Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 0.4 mile east of the intersection of Pennington Road and Colusa Highway, about 5.5 miles west of Gridley. 23 Comment
  SEINET10499843  Plantago bigelovii Mary Susan Taylor 1976-3-23 Taylor 1031 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  CHSC109178  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte On the bottom and sides of a small vernal pool, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  CHSC24971  Plantago elongata T. F. Burnham 1976-4-20 11 Butte 50 ft s of Cana Pine Creek Road, at the intersection of 99 and Cana Pine Creek Road. 97 Comment
  CHSC82236  Plantago elongata Lowell Ahart 2002-3-24 9428 Butte On the east side of Table Mountain Boulevard, about 100 yards south of the bridge across the drainage from Beatson Hollow, about 5 miles (air) northwest of Oroville. 76 Comment
  CHSC3814  Plantago erecta L. E. Dunkel 1965-9-3 5 Butte Ca. 60 yards e of entrance gate at Chico Municipal Airport. 30 Comment
  CHSC4179  Plantago erecta M. Lee 1967-4-10 15 Butte In field, W. side of Cherokee Rd., ca. 8 1/2 mi. N. of Oroville. 373 Comment
  CHSC52449  Plantago erecta Diane M. Reilly 1980-4-19 17 Butte Under power lines, ca. 1/4 mi SW off Big Bend Rd, ca. 2 mi off hwy 70, ca. 25 mi E of Chico. 609 Comment
  SEINET10499850  Plantago erecta Mary Susan Taylor 1980-4-6 Taylor 2450 Butte On S side of Melody Lane, ca. 1 mi E of its junction with Honcut-Palermo Rd, ca. 5 mi S of Palermo. With L. Ahart & J.D. Jokerst. 38 Comment
  CHSC107433  Plantago lanceolata L. P. Janeway 2011-6-29 10407 Butte Northern High Sierra Nevada. Top of Bloomer Hill, at southwest corner of the fence around the upper communication tower; between the chain-link fence and a little used short access dirt road. 908 Comment
  CHSC1223  Plantago lanceolata M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC88146  Plantago lanceolata Lowell Ahart 2004-7-23 11303 Butte In a small meadow, on the west side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  JEPS113684  Plantago lanceolata Lowell Ahart 2007-7-27 14393 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  HSC92461  Plantago major L. Ahart 1981-9-27 3213 Butte 1/8 mi. NE of intersection Lower Wyandotte Rd. and Upper Palermo Rd., 4 mi. NE of Palermo 73 Comment
  JEPS115884  Plantago major Lowell Ahart 2009-6-19 15920 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  JEPS98554  Plantago virginica Lowell Ahart 2000-5-17 8366 Butte 7 1/4 air mi W of Oroville (SE margin Thermalito Afterbay, W of poor dirt road, S of the Cottonwood tree, about 1/8 mi N of the Richvale Hwy, about 3/4 mi E of Hwy 99) 42 Comment
  CHSC61527  Platanthera leucostachys Lowell Ahart 1993-6-26 7006 Butte About 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC2383  Platystemon californicus R. Carter 1965-3-23 173 Butte Found ca. 7 mi. NW of Chico along E side of Hicks Ln. 25 mi. S of Keefer Rd., ca 10 yds. S of bridge, along roadside. 76 Comment
  CHSC60694  Plectritis macrocera Vernon H. Oswald; James Snowden 1993-4-7 5252 Butte Near the SE rim of Hamlin Canyon E of the cattle barns on the McKnight Ranch, E side of Hwy. 99 between Durham-Pentz and Neal roads, S of Chico. 182 Comment
  POM193358  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville. 1550 Comment
  HSC72943  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between FS 21N33 and 21N80, Galen Ridge, 1 mi. SW of Bald Rock Rd, 0.5 mi. N of Zink Rd., 2 mi. SW of Brush Creek. 1006 Comment
  CHSC100964  Poa annua Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC47627  Poa annua Lowell Ahart 1974-3-12 317 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC254923  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2.5 miles N and 3 miles E of Honcut, about 12 miles S of Oroville 67 Comment
  CHSC38845  Poa compressa Vernon Oswald 1983-6-24 762 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  CHSC34164  Poa pratensis L. Ahart 1981-9-15 3155 Butte On the sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC100898  Poa secunda subsp. secunda R. A. Schlising; Alice Ratcliff 1980-4-6 3549 Butte South of Chico, at the junction of Oroville-Chico Road and Neal Road. 53 Comment
  CHSC103981  Poa secunda subsp. secunda Lowell Ahart 2010-5-14 16670 Butte Open rocky flats near south park fence, about 1/4 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 363 Comment
  CHSC8253  Poa secunda subsp. secunda M. Banning 1969-4-15 54 Butte Junction of Rock Cr. Rd. and Cohasset, along road. 60 Comment
  CHSC12731  Pogogyne douglasii R. Howlett 1974-4-25 1 Butte On Bruce rd. Ca. 1 mi off of Stillson Canyon Rd. 70 Comment
  CHSC75282  Pogogyne douglasii Jennifer Slater 1997-4-20 25 Butte Edge of vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  POM62748  Pogogyne douglasii A. A. Heller, H. E. Brown 1902-5-15 5553 Butte Near Biggs. Comment
  UC196319  Pogogyne douglasii A. A. Heller 1914-5-13 11390 Butte Comment
  SD106157  Pogogyne douglasii subsp. douglasii W. L. Jepson 1932-5-9 16367 Butte East of Cana Comment
  UC1303183  Pogogyne zizyphoroides A. A. Heller 1926-3-29 13915 Butte 9 miles north of Chico Comment
  UCD80398  Pogogyne zizyphoroides CNPS SN Foothill Team 2005-4-12 SNFN 0077 f 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
  CDA25320  Polanisia dodecandra subsp. trachysperma L. Ahart 2002-9-27 9938 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 miles southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC75992  Polanisia dodecandra subsp. trachysperma Lowell Ahart; Vernon H. Oswald 1999-8-13 8157 Butte Large disturbed 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. 32 Comment
  SEINET13711411  Polanisia dodecandra subsp. trachysperma Lowell William Ahart, Lowell William Ahart 1999-1 8157 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  UC1562380  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1990-6-1 6504 Butte on s edge of Durham Highway about 3 mi e Durham (about 1 mi w of Highway 99) 60 Comment
  CHSC11948  Polemonium occidentale E. B. Copeland 1929-7-28 392 Butte Jonesville. 1500 Comment
  CHSC109070  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte On the south side of the path, near Table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CAS-BOT-BC167551  Polygala cornuta var. cornuta Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC46976  Polygala cornuta var. cornuta Vernon H. Oswald 1989-9-27 4017 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of the roadway which surrounds the perimeter of the lake. 777 Comment
  JEPS115673  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 369 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-BC414190  Polygonum aviculare subsp. depressum John Thomas Howell 1961-9-22 36743 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC109141  Polygonum bidwelliae James L. Reveal 1988-6-3 6999 Butte Crown Point Road, 0.8 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road. 609 Comment
  RSA261661  Polygonum bistortoides A. Kellogg 1870-6-21 s.n. Butte Chico Comment
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Jun 10 2012
  CHSC102160  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UC85631  Polygonum californicum Mrs. R. M. Austin 1883-1 Butte Chico Comment
  POM118565  Polygonum californicum C. C. Bruce 1897-06 2007 Butte [No location data on label] Comment
  JEPS118058  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte Aboout 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Prk, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  UC1101161  Polygonum lapathifolium Herbert L. Mason and Verne Grant 1946-8-14 13028 Butte Sacramento Outing Club Butte Sink (canal near big pond) Comment
  CHSC63717  Polygonum parryi Lowell Ahart 1994-10-9 7555 Butte In a small grassy opening, on the north side of Forbestown road, about 150 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  SEINET10479659  Polygonum parryi Mary Susan Taylor 1986-5-6 Taylor 5618 Butte Butte County; Cohasset Ridge, in open flat areas in mixture of Foothill Woodland and Chaparral, ca. 10 mi NNW of Chico. With Vern Oswald & Lowell Ahart. 1400 ft. 427 Comment
  POM219111  Polygonum phytolaccifolium E. B. Copeland 1930-8-4 628 Butte Jonesville. 1500 Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC94486  Polygonum punctatum Lowell Ahart 2006-8-29 13237 Butte In the field north of the canal and Parking Lot 16, west of the gravel road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 19 Comment
  RSA724947  Polygonum punctatum L. Ahart 2006-10-8 13428 Butte E side of the N fork of the Feather River, just E of where the river flows into a pool, on the W side of Hwy 70, 1/2 mile N of Cresta Power House. 610 Comment
  CAS-BOT-BC71862  Polypodium californicum Rod O'Sullivan 1977-2-12 4 Butte Little Chico Creek Canyon, 9.2 mi NE of Chico on Hwy 99 and 1 mi E of Tenmile House, Paradise Quadrangle, 15' 268 Comment
  SEINET10530414  Polypodium californicum Mary Susan Taylor 1979-3-20 Taylor 1950 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10834128  Polypodium californicum Mary Susan Taylor 1979-3-19 Taylor 1930 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC28504  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1979-10-13 2254 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise, 426 Comment
  CHSC3886  Polypodium calirhiza Gerry Carrauthers 1966-3-7 79 Butte Honeyrun Rd. above old Honeyrun Bridge. Ca. 5 mi. N. W. of city of Paradise. Comment
  CAS-BOT-BC232963  Polypogon australis Lowell Ahart 1981-9-15 3158 Butte 0.5 mile N of the Lost Creek Reservoir 1100 Comment
  CHSC61376  Polypogon australis Lowell Ahart 1993-7-23 7098 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
  UCD90526  Polypogon australis L. E. Hazeltine 1916-6-10 s.n. Butte Chico. Comment
  UCD90975  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC233053  Polypogon interruptus Lowell Ahart 1987-5-27 5699 Butte On sand bar along the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  SD34489  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte near Lomo, 13 miles west of Chester, near road to Chico Creek Comment
  SEINET10508324  Polypogon interruptus Lowell Ahart 1983-6-15 Ahart 4057 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  UCD91195  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Low adobe places near Butte creek between Durham and Nelson. Comment
  CHSC4145  Polystichum munitum R. Carter 1966-6-26 463 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. Up E side Berry Cr. 457 Comment
  CHSC35698  Populus fremontii J. D. Jokerst 1982-5-1 1554 Butte Ca. 200 met E. Phantom Falls at the N Fork of Coal Cr. Canyon. Comment
  SEINET10965417  Populus fremontii Mary Susan Taylor 1974-10-11 Taylor 326 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CHSC38889  Potamogeton diversifolius Vernon Oswald 1983-6-3 617 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CHSC46466  Potamogeton gramineus V. Oswald; L. Ahart 1989-6-27 3832 Butte Humbug Rd a Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In a pool located in a meadow along Butte Creek. 1767 Comment
  CHSC112658  Potamogeton nodosus Lowell Ahart 2013-10-16 19114 Butte Thermalito Afterbay, about 20 feet north of the base of the large rock levee, about 100 yards north of Larkin Road, about 4 miles (air) north of East Biggs. 49 Comment
  POM218973  Potamogeton pusillus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  RSA4416  Potamogeton pusillus subsp. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville, Butte County. 1650 Comment
  CHSC65476  Potamogeton pusillus var. tenuissimus Vernon Oswald 1989-6-8 3800 Butte W side of Hwy 99 in ditch just n of Comanche Creek in s Chico. 64 Comment
  CHSC45610  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  UCD113869  Potentilla gracilis A. A. Heller 1917-7-26 12836 Butte Butte Meadows. 1280 Comment
  CHSC44400  Prunella vulgaris var. lanceolata Lowell Ahart 1988-6-23 6062 Butte In small meadow, north of Forbestown Road, about 1/12 mile east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  UC1609298  Pseudobahia heermannii Vernon H. Oswald and Lowell Ahart 1993-3-24 5239 Butte e side of canyon n historical site of Pentz (on e side of a secondary drainage entering Dry Creek 2 mi n of Pentz Rd.); Dry Creek Canyon 274 Comment
  CHSC61295  Pseudognaphalium californicum Lowell Ahart 1993-7-31 7147 Butte Along the west edge of Concow Road, just south of Lake Concow. 640 Comment
  CHSC38351  Pseudognaphalium stramineum Vernon Oswald 1983-5-27 560 Butte Upper Bidwell Park, Chico, 200 ft n of Upper Park Rd. at Diversion Dam. 121 Comment
  CHSC66288  Pseudognaphalium stramineum Lowell Ahart 1996-5-9 7679 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  UC195396  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte 8 mi from Chico (Chico-Oroville road) Comment
  CAS-BOT-BC361827  Psilocarphus oregonus A. A. Heller 1915-5-28 11913 Butte Near Cohasset Comment
  CHSC25483  Psilocarphus oregonus L. Ahart 1977-4-15 1301 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC29848  Psilocarphus oregonus K. R. Stern 1979-5-23 6613 Butte Ca. 5 mil SW of Paradise. 182 Comment
  SFV4079  Psilocarphus tenellus M. L. Vincent 1962-4-15 174 Butte Sierra Nevada Intersection of Bernum and Pentz Roads. Near the town of Pentz. 200 Comment
  CHSC48192  Psilocarphus tenellus var. tenellus Vernon Oswald 1987-4-15 2328 Butte Butte Creek Preserve on the s side of Butte Creek e of Hwy 99 near the valve which regulates Durham Mutual Ditch. 68 Comment
  JEPS119981  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  RSA0047080  Ptelea crenulata L. Ahart 2012-4-30 17931 Butte Both sides of South Rim Trail, about 0.5 miles southwest of the old homestead, pond, and Ten Mile House Road, about 0.75 miles west of Highway 32, about 8 miles northeast Chico, south part of Upper Bidwell Park. 256 Comment
  UCR231083  Pteridium aquilinum Anna M. Hurlbutt 2009-8-7 020 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CAS-BOT-BC460485  Pterospora andromedea A. A. Heller 1914-8-8 11670 Butte At Jonesville 1524 Comment
  RSA105838  Pterostegia drymarioides R. M. Austin 1883-05 27 Butte Chico Creek Comment
  SEINET10602442  Puccinellia pauciflora Vernon H. Oswald, Lowell Ahart 1989-8-15 Oswald 3940 Butte Soda Ridge Rd, 1.5 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. On the edge of a dry snow lake located over a low ridge just n of the marshy, spring-fed lake visible from the road. Comment
  CHSC36068  Puccinellia simplex J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1545 Butte Grey Lodge east of dirt road z 1/4 mile S of Rutherford Road. Comment
  JEPS115841  Quercus berberidifolia Lowell Ahart 2009-4-22 15577 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  UCR231084  Quercus chrysolepis Anna M. Hurlbutt 2009-8-12 016 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  HSC32631  Quercus douglasii Gary S. Lester 1974-4-20 101 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  SEINET12031932  Quercus garryana W. Knight, Knight, I. 1989-1 6495 Butte Cohasset Rd 0.6mi S of summit at 1700 ft Comment
  CAS-BOT-BC105145  Quercus kelloggii Lowell Ahart 1984-7-19 903 - 4735 Butte About 1.5 miles SE of Bald Mountain, 3/4 mile W of Oak Point, about 4 miles NE of Stirling City 1500 Comment
  CHSC30793  Quercus kelloggii M. S. Taylor 1980-5-27 2657 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  JEPS115710  Quercus kelloggii Lowell Ahart 2009-6-3 15812 Butte On the north edge of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CAS-BOT-BC61586  Quercus lobata P. C. Everett; E. K. Balls 1959-10-20 23905 Butte Bidwell Park, Chico 58 Comment
  JEPS113214  Quercus lobata Lowell Ahart 2007-3-28 13601 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 51 Comment
  UCR219104  Quercus lobata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15593 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  SACT002720  Quercus vacciniifolia Mary Johnson 1934/08/00 Butte Showing insect galls. 1500.0 Comment
  SEINET10477840  Quercus wislizeni Mary Susan Taylor 1976-3-30 Taylor 1037 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  CHSC90107  Quercus wislizeni var. wislizeni Charlie Crannell 1991-4-22 3 Butte 50 ft south of where Honey Run Road crosses Butte Creek. 103 Comment
  SEINET12094429  Ranunculus bonariensis Unknown 1983-1 261 Butte SW of Bangor, T18N, R4E, sec. 36 73 Comment
  CHSC45400  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 1659 Butte In a vernal pool, Peter Ahart Ranch, about 1 mile north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1442628  Ranunculus bonariensis var. trisepalus Lowell Ahart 1978-4-21 Butte Peter Ahart Ranch Honcut 45 Comment
  CHSC52788  Ranunculus canus J. D. Jokerst; M. S. Taylor 1980-2-24 452 Butte Along hillsides at base of rimrock ca 0.5 mi E of Richardson Springs. 243 Comment
  RSA3795  Ranunculus canus A. A. Heller 1926-3-31 13916 Butte 14 miles S of Chico. Comment
  CHSC115355  Ranunculus hebecarpus Lowell Ahart 2015-3-24 19963 Butte Cliffs, on the road cut on the south side of Pacific Heights Road, about 3 1/2 miles (air) southwest of Oroville. 47 Comment
  CHSC52122  Ranunculus hebecarpus Scott Lorbeer 1984-4-10 16 Butte Ca. 12 mi nw of Chico at jct of Broyles Road and Hwy 99, on w side of Hwy 99. 60 Comment
  CHSC7045  Ranunculus muricatus M. I. Moore 1969-3-17 1 Butte Bidwell River Park along bank of slough w end of Sacramento Ave., Chico. 64 Comment
  UCD80710  Ranunculus muricatus CNPS SN Foothill Team 2005-4-14 SNFN 0033 d Butte Rock Ranch (private), in the horse pasture, near the NE corner of the pasture located west of the barn and house; plot is ca. 10 m from corner of pasture fence. 105 Comment
  POM99241  Ranunculus muricatus C. C. Bruce 1897-04 1890 Butte [No location data on label] Comment
  CHSC3805  Ranunculus occidentalis R. D. Briggs 1966-3-2 50 Butte Salmon Hole,' 4 miles above the Bidwell Park golf course, Chico. 106 Comment
  SEINET10535980  Ranunculus occidentalis var. eisenii Mary Susan Taylor 1978-7-21 Taylor 1829 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC109064  Ranunculus occidentalis var. occidentalis Lowell Ahart 2012-4-30 17921 Butte On the southwest side of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 392 Comment
  CHSC4664  Ranunculus occidentalis var. occidentalis R. Carter 1966-4-2 320 Butte Found ca. 7 mi. E of Oroville at 6120 Woodleaf St. Rt.; 300 yds. off Feathervale, behind house. 243 Comment
  CHSC41517  Ranunculus occidentalis var. ultramontanus Kirsten Tarp 1983-8-5 325 Butte Ca. 1.0 mi sw of Jonesville on Humboldt Rd. at Colby Creek. Near stream in meadow. 1487 Comment
  CHSC52827  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-28 309 Butte Chico Meadows, ca. 1 mi n of Butte Meadows in ne part of county. In meadow. 1295 Comment
  JEPS123886  Ranunculus pusillus Lowell Ahart 2015-5-5 20139 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  CHSC93958  Ranunculus uncinatus var. uncinatus R. D. Fischer 2004-6-20 754 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 off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  CHSC31824  Rhamnus tomentella subsp. tomentella L. Ahart 1975-6-5 782 Butte Peter Ahart Ranch, Honcut. Along North Honcut Creek on moist to dry loamy soil. 45 Comment
  RSA712801  Rhamnus tomentella subsp. tomentella L. P. Janeway 2005-6-26 8433 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  CHSC13517  Rhododendron occidentale A. R. Morrison 1974-4-20 Butte On trail to Feather Falls, ca. 2 mi. upstream from Lake Oroville. Comment
  CHSC43881  Rhododendron occidentale L. P. Janeway 1987-6-8 2169 Butte Along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  JEPS87159  Rhynchospora capitellata Lowell Ahart 1992-8-2 6901 Butte about 3 (air) mi ne Concow Reservoir (w side of meadow); Concow Meadow 1097 Comment
  CAS-BOT-BC169093  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CHSC1658  Ribes inerme var. klamathense T. Morgue 1932-5-3 Butte Concow Reservoir. 579 Comment
  SEINET12215665  Ribes roezlii Unknown 1977-1 5 Butte ca 15 mi E of Chico, 3 mi NE of Forest Ranch & 50 yds NE of Little Chico Creek 792 Comment
  CAS-BOT-BC198958  Ribes roezlii var. roezlii M. S. Taylor 1982-5-23 4513 Butte S side of Hwy 70, vicinity of Arch Rock Tunnel ca. 0.5 mi SW of Butte-Plumas county line. 487 Comment
  JEPS119551  Ribes roezlii var. roezlii Lowell Ahart 2012-2-22 17754 Butte On the north side of Ten Mile House Road, about 100 yards northeast of Guardian Trail about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC173955  Ribes viscosissimum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC76515  Ricinus communis Vernon H. Oswald 1999-11-14 9840 Butte Near the southwest corner of the Chico Sewage Treatment Plant on Chico River Rd. Rancho de Farwell. 39 Comment
  CHSC87547  Robinia pseudoacacia R. D. Fischer 2004-3-5 70 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found next to parking area at 10 Mile House Road leading into the park. 502 Comment
  CAS-BOT-BC74468  Rorippa curvisiliqua A. A. Heller 1914-5-30 11469 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road 6 miles from Chico. Comment
  CHSC50026  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1990-4-15 6451 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
  CHSC9136  Rorippa nasturtium-aquaticum Terril Wolt 1970-4-20 28 Butte Streams; ca. 4 mi. N.E. of Skyway, on W. side of Humbug Rd. Comment
  UCD149847  Rorippa palustris BED 1974-6-17 s.n. Butte Gray Lodge Wildlife Area, Field 53. Comment
  CHSC75990  Rorippa palustris var. hispida Lowell Ahart; Vernon H. Oswald 1999-8-13 8182 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
  CHSC43212  Rosa bridgesii L. P. Janeway 1987-6-19 2240 Butte Side ravine south from Sly Cr; 1.6 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 mile (air) southwest of Forbestown. 829 Comment
  POM90181  Rosa californica C. C. Bruce 1897-06 1807 Butte Little Chico. Comment
  SEINET11910494  Rosa gymnocarpa P. Ahart, Ahart, L. 1983-1 4464 Butte T20N, R8E, Sec 5, along French Creek, 3mi N of Sly Creek Dam, N of Strawberry Valley 900 Comment
  UC1862495  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 b Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CHSC50561  Rosa pisocarpa subsp. pisocarpa Vernon Oswald; Lowell Ahart 1990-7-5 4346 Butte Camping area along Butte Creek on F-Line, 0.4 mi southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. On the bank of the creek. 1316 Comment
  CHSC76419  Rotala ramosior Lowell Ahart 1999-10-28 8305 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 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
  NY43611  Rubus laciniatus S. Bianco 1995-10-18 1039 Butte 4236 Kakini Rd, E of Concow Rd, off Yellowwood Rd (Private land holding) 762 Comment
  CHSC108313  Rubus ursinus Lowell Ahart 2011-8-17 17623 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  JEPS122191  Rubus ursinus Lowell Ahart 2014-4-16 19365 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
  CHSC50683  Rumex acetosella Lowell Ahart 1990-5-25 6497 Butte Just below the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  JEPS95968  Rumex acetosella Lowell Ahart 1999-6-12 8090 Butte large reservoir north of Beatson Hollow; North Table Mountain; about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 295 Comment
  CAS-BOT-BC421733  Rumex conglomeratus Lowell Ahart 1982-6-27 3653 Butte About 2 1/4 miles north and 1/4 mile east of Honcut, Peter Ahart Ranch 50 Comment
  CAS-BOT-BC421615  Rumex crispus John Thomas Howell 1959-9-20 34621 Butte Eastern outskirts of Oroville 60 Comment
  CHSC103944  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  SEINET10479441  Rumex pulcher Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4145 Butte T20N R5E nw sec 15. Around a small meadow along Ponderosa Way (Big Ridge Rd), ca. 1/2 mi s of East Fork Canyon Creek, ca. 13.5 mi ne of Oroville. Foothill Woodland. 550 Comment
  CHSC99487  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte Bottom of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CHSC45578  Sagina apetala Lowell Ahart 1975-5-11 752 Butte In a wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC71172  Sagina apetala Lowell Ahart 1998-6-9 8003 Butte In a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC35031  Sagina decumbens subsp. occidentalis R. A. Schlising; J. D. Jokerst 1981-4-15 4031 Butte Southeastern part of county, along Hurleton/Swedes Flat Road, 0.6 mi N of junction with Swedes Flat Road. At roadside. Comment
  CHSC90800  Sagina decumbens subsp. occidentalis Lowell Ahart 2005-5-2 11776 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
  JEPS113284  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
  RSA173737  Sagina saginoides H. F. Copeland 1927-9-4 947 Butte Jonesville. Comment
  RSA4630  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Jonesville. 1550 Comment
  SD74  Sagittaria cuneata E. B. Copeland 1930-7-29 Butte Above Jonesville. 1700 Comment
  CHSC113972  Sagittaria montevidensis subsp. calycina Lowell Ahart 2014-10-14 19883 Butte Open area 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. 29 Comment
  CHSC66363  Sagittaria montevidensis subsp. calycina Vernon H. Oswald 1996-6-20 7831 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the S end of Tract 3.4, Sanctuary II. 33 Comment
  POM219074  Salix boothii E. B. Copeland 1931-6-11 623 Butte Jonesville. Kirby's Meadow. 1750 Comment
  CAS-BOT-BC103735  Salix exigua M. S. Taylor 1982-5-22 4498 Butte Graylodge Wildlife Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. Pennington quad. 19 Comment
  CHSC38667  Salix exigua var. hindsiana Vernon Oswald 1983-5-25 551 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd at Diversion Dam. 134 Comment
  JEPS119529  Salix exigua var. hindsiana Lowell Ahart 2012-4-20 17888 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. 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
  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
  JEPS115376  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
  CAS-BOT-BC104075  Salix hindsiana Lowell Ahart 1987-4-30 5491 Butte along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  RSA0045619  Salix laevigata Lowell A. Ahart 2012-4-9 17848 Butte 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
  CDA38767  Salix lasiolepis L. Ahart 2012-4-2 17887 Butte On the east side of Big Chico Creek, about 20 yards west of the trail, about 200 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC1622  Salix lasiolepis V. Holt 1958-2-17 Butte Along Sandy Gulch near Chico. 60 Comment
  RSA28802  Salix lasiolepis A. A. Heller 1914-4-27 11324 Butte 8 miles N of Oroville. Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  UC600412  Salix lemmonii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  CAS-BOT-BC125061  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550 Comment
  POM219073  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville, Butte Creek. 1500 Comment
  CHSC9691  Salix nigra E. L. Smith 1971-9-12 1063 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  POM219007  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  SEINET13947659 Image available Salvia sonomensis A. A. Heller 1914-1 11410 Butte W slope of the Sierra near Forest Ranch; 2400 ft alt. 732 Comment
  CHSC3773  Sambucus mexicana R. L. Adams 1964-4-12 75 Butte Found 1/4 mile S of junction of River road and highway 32 on E. side of road next to a barn. Comment
  POM193376  Sambucus microbotrys E. B. Copeland 1930-7-12 480 Butte Above Jonesville, along north brow of high ridge 2100 Comment
  JEPS115317  Sanicula bipinnata Lowell Ahart 2009-4-17 15558 Butte On the south slope of a ridge, about 200 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  UC175514  Sanicula bipinnata A. A. Heller 1913-4-5 10707 Butte above Oroville (n side of Feather River); Feather River Comment
  CHSC23641  Sanicula bipinnatifida M. S. Taylor 1976-3-30 1038 Butte Ca. 20 ft e of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  UC174161  Sanicula bipinnatifida Mrs. R. M. Austin Apr. 1896 214 Butte Little Chico Creek Comment
  UC726870  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Paradise Comment
  HSC38020  Sanicula bipinnatifida Thomas W. Nelson, Jane P. Nelson 1976-5-10 2480 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  JEPS115607  Sanicula bipinnatifida var. flava Lowell Ahart 2009-5-23 15751 Butte About 10 miles northeast of Chico, about 1/2 mile (air) southwest of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 311 Comment
  CHSC1983  Sanicula crassicaulis A. Goekler 1930-4-13 Butte Chico. Comment
  UCD127991  Sanicula crassicaulis Robert Kehlor 1951-5-6 47 Butte J. M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC42671  Sanicula tuberosa Vernon Oswald 1985-1-24 1680 Butte Upper Bidwell Park, Chico, on the north rim just e of the head of the west intermittent stream flowing into Sycamore Creek. 304 Comment
  CHSC45883  Sanicula tuberosa Lowell Ahart 1982-5-8 3412 Butte On the north slope above the road, about 1/2 mile south-west of the Forbestown Reservoir, about 4 1/2 miles north-east of Forbestown. 731 Comment
  CHSC79646  Sanicula tuberosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13749 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  SEINET10454586  Sanicula tuberosa Mary Susan Taylor 1980-7-6 Taylor 3077 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
  CAS-BOT-BC436866  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 36 Comment
  SEINET8244409  Saxifraga californica A. A. Heller 1914-3-19 11214 Butte Canon of Big Chico Creek. 76 Comment
  SEINET8720392 Image available Saxifraga integrifolia E. B. Copeland 1929-1 369 Butte Jonesville. 1550 Comment
  RSA755046  Scandix pecten-veneris L. Ahart 2009-4-26 15613 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 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
  CHSC24430  Schoenoplectus mucronatus Lowell Ahart 1976-9-18 Butte Rice fields on the Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC111649  Schoenoplectus mucronatus Lowell Ahart 1980-9-8 2592 Butte Peter Ahart Ranch, Honcut 15 Comment
  UC1100774  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-14 13031 Butte canal near big pond on Sacramento Outing Club (Butte Sink); Butte Sink Comment
  CHSC45137  Scirpus congdonii Vernon Oswald; Lowell Ahart 1987-7-1 3083 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. At the e end of the large lake. 1935 Comment
  CAS-BOT-BC30729  Scirpus diffusus M. S. Taylor 1978-7-18 1722 Butte On n side of Butte Creek at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground. 1524 Comment
  CDA39142  Scirpus microcarpus L. P. Janeway 1995-8-2 4886 Butte Head of minor drainage into Haphazard Creek; west side of Oroville-Quincy Hwy 0.55 mi south of the county line; southwest corner of crossing of an un-numbered dirt road. Comment
  CHSC19637  Scribneria bolanderi J. Wheeler 1968-4-19 326 Butte W side of Cherokee Rd. ca. 0.75 mi s of Oregon City Rd., Table Mountain. 548 Comment
  CHSC29300  Scribneria bolanderi J. D. Prouty 1980-4-25 80 .81 Butte N of Serene Lane ca. 3 mi. s of Oroville. 82 Comment
  CHSC31740  Scribneria bolanderi L. Ahart 1978-4-27 1664 Butte Pasture fields. Peter Ahart Ranch, Honcut. 50 Comment
  UC887501  Scrophularia californica A. A. Heller 1916-4-13 12322 Butte e Chico (Stilson Canyon) Comment
  CHSC52199  Scutellaria californica L. P. Janeway 1988-5-29 2702 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC52201  Scutellaria siphocampyloides L. P. Janeway 1988-5-19 2674 Butte Southeast-sloping ravine above Mud Cr and just below Ponderosa Way 0.7 mi from Vilas Rd. 746 Comment
  CHSC799  Scutellaria siphocampyloides R. Carter 1964-6-12 121 Butte Ca. 24 mi. E of Oroville on Lower Forbestown Rd. 3 mi. N of Olive Hwy. on E side of road. 60 Comment
  UC1713641  Scutellaria siphocampyloides Mrs. C. C. Bruce May 1897 1835 Butte Big Chico Comment
  RSA82375  Scutellaria siphocampyloides F. W. Peirson 1926-6-21 6773 Butte Butte Meadow, Humboldt Road. Comment
  CHSC38482  Scutellaria tuberosa Vernon Oswald 1983-3-14 183 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.8 mi e of the power lines. 350 Comment
  CHSC4014  Scutellaria tuberosa D. B. Joley 1967-4-16 24 Butte Few plants in a field, ca. 1/4 mile after you turn off 99, s of Chico turn left on first dirt road past Butte Creek Bridge on 99. 59 Comment
  CHSC57224  Scutellaria tuberosa Vernon H. Oswald; Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Rd. on the north side of Thermalito Diversion Pool about one-quarter mile east of the old bridge site. 76 Comment
  CHSC2185  Secale cereale H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave. at Ceanothus Ave., Chico. 57 Comment
  CHSC84128  Sedella pumila Lowell Ahart 2003-4-10 10082 Butte Near the easat 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
  CHSC24643  Sedum spathulifolium S. Deaton 1976-4-23 37 Butte Ca. 1 3/4 mi n of Feather Falls trail parking lot, n side of trail. 853 Comment
  RSA0081478  Sedum spathulifolium C. C. Bruce 1897-05 1778 Butte Butte Creek. Comment
  SFV1567  Sedum spathulifolium M. L. Vincent 1962-4-18 211 Butte Near Feather River at Hells Town. Comment
  CHSC65798  Selaginella hansenii L. P. Janeway 1994-10-23 4759 Butte On lower face of Bald Rock Dome, along Dome Trail; overlooking Middle Fork Feather River. 441 Comment
  SEINET10470982  Selaginella hansenii Collins, 1978-4-21 Collins 14 Butte 6 miles n of Oroville, 1 mile w of Cherokee Rd. 1000 feet. 305 Comment
  CAS-BOT-BC363283  Senecio aronicoides A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC363992  Senecio integerrimus var. major A. A. Heller 1919-5-18 13171 Butte Stirling 1072 Comment
  CAS-BOT-BC363994  Senecio integerrimus var. major Lowell Ahart 1987-5-22 5670 Butte About 1/8 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  RSA4143  Senecio subnudus E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC27967  Senecio triangularis M. S. Taylor 1978-7-19 1743 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC36304  Senecio vulgaris M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4354 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC38387  Senecio vulgaris Vernon Oswald 1982-12-19 30 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  JEPS115244  Senecio vulgaris Lowell Ahart 2009-4-3 15523 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  SFV11435  Senecio vulgaris M. L. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Road. Comment
  UC261  Sequoiadendron giganteum unknown 1894-1-1 Butte Chico Forestry Station Comment
  CHSC65189  Setaria gracilis Lowell Ahart 1995-8-19 7615 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
  RSA724851  Setaria parviflora L. Ahart 2006-9-28 13383 Butte on the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  CHSC109684  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte At the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 61 Comment
  CHSC40642  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte On the sides of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC97725  Setaria sphacelata Lowell Ahart 2007-11-3 14563 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CDA42919  Setaria viridis L. Ahart 2012-8-1 18416 Butte On the northeast side of Bidwell Mansion, on the southwest side of the parking area, Bidwell Mansion, Chico. Comment
  CHSC109002  Sherardia arvensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17917 Butte On the north side of the path,near the intersection of Centennial Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  SEINET10448358  Sibara virginica Lowell Ahart 1985-4-1 Ahart 4871 Butte On damp bare soil along Wyandotte Creek and Central House Road, north-west of Honcut, about 12 miles south of Oroville. Comment
  JEPS102952  Sidalcea L. P. Janeway, B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside 1341 Comment
  POM319038  Sidalcea Patricia Wilder 1971-6-23 5196 Butte One mile E of Forbestown on Challenge cut-off Road, near junction with Forbestown Road. East of Oroville.; Mt. Range: West slope of the Sierra Nevada; Drainage Area: Feather River. 823 Comment
  CHSC24891  Sidalcea asprella P. Laherty 1976-4-4 12 Butte On slope, ca. 3 ft n of Ponderosa Way, ca. 1 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 487 Comment
  CHSC34961  Sidalcea calycosa R. A. Schlising 1979-6-4 3440 Butte S of Cohasset, off Cohasset Road. Comment
  UC203663  Sidalcea calycosa subsp. calycosa A. A. Heller 1914-5-8 11381 Butte Comment
  CHSC112929  Sidalcea diploscypha B. Castro 2012-5-9 1918 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.34 mi N of jcn of Hwy 99/Hwy 162W and ca 0.45 mi. S of screened CDFG fishery facility 39 Comment
  CHSC96335  Sidalcea gigantea L. P. Janeway 2006-8-12 8838 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  JEPS97945  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC45944  Sidalcea hartwegii Lowell Ahart 1972-4-18 87 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC52446  Sidalcea hartwegii Denise Monceau 1984-4-11 12 Butte Ca 5 mi from hwy 99; jct of Honey Run and Humbug Roads. SE side of road. 106 Comment
  CHSC95211  Sidalcea hartwegii R. D. Fischer 2004-4-25 807 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected off ridge top along Hwy 32 and the beginning of the Bloodypin Trail. 335 Comment
  JEPS117235  Sidalcea hartwegii Lowell Ahart 2010-5-16 16694 Butte Just east of the basalt cliffs, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 368 Comment
  UC66034  Sidalcea hartwegii A. A. Heller and H. E. Brown 1902-5-9 5512 Butte near Clear Creek; near Clear Creek, Berry Canyon Comment
  UCSB63716  Sidalcea hartwegii Bufton, Gail 1990-4-17 Butte Ca. 50 m S of Butte Creek and 0.3 km w of Covered Bridge, 10.2 km ese of Chico 120 Comment
  CHSC1047  Sidalcea hirsuta F. Johnson 1937-5-20 Butte Near old radio transmitter on Madrone St. 57 Comment
  RSA715558  Sidalcea hirsuta L. Ahart 2005-5-11 11792 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yard south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  SJSU8536  Sidalcea hirsuta J. B. Willis Jr. 1969-5-3 99 Butte by State Hwy 70 c. 7 mi NE of Oroville Comment
  SEINET10937542  Sidalcea malviflora subsp. asprella Mary Susan Taylor 1982-8-16 Taylor 4996 Butte T24N R4E se/se sec 11. Pulga NW quad. At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. Mixed Evergreen Forest; 5400 ft. 1646 Comment
  CHSC1059  Sidalcea oregana subsp. spicata V. Holt 1935-7-1 Butte De Sabla. 762 Comment
  POM183155  Sidalcea oregana subsp. spicata H. F. Copeland 1318 Butte Jonesville. Comment
  UC726097  Sidalcea oregana subsp. spicata A. A. Heller 1928-6-28 14650 Butte Butte Meadows Comment
  CHSC37440  Sidalcea robusta R. A. Schlising 1982-2-21 4225 Butte S of Paradise, near Elliot Spring House; slopes of Hamlin Canyon. 213 Comment
  CHSC38553  Sidalcea robusta Vernon Oswald 1983-5-21 517 Butte Upper Bidwell Park, Chico, on the north rim 1500 ft e of the power lines. 274 Comment
  RSA31842  Sidalcea robusta A. A. Heller 1941-5-9 s.n. Butte Clark Road about a mile above the site of the old Clear Creek Post Office. Comment
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May 22 2007
  CHSC45556  Silene antirrhina Lowell Ahart 1980-5-25 2343 Butte Near the edge of Ponderosa Way, about 1 1/2 miles south of the Ponderosa Dam, about 2 miles north-west of Forbestown. 457 Comment
  CAS-BOT-BC384467  Silene antirrhina Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi. se of Paradise. NE of Kunkle Res. 500 Comment
  CAS-BOT-BC174846  Silene bernardina R. A. Schlising 1982-8-1 4362 Butte N part of county e of Inskip and near Jones Meadow 1734 Comment
  CDA13245  Silene californica G. F. Hrusa, T. D. Wilfred 1996-7-8 13092 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  SEINET5337142  Silene californica W. Short 1959-4-11 s.n. Butte 15 miles east of Oroville, California on US 40. 549 Comment
  SEINET5337144  Silene californica R. T. Short 1959-4-11 13 Butte 15 miles east of Oroville on US 40. 549 Comment
  CHSC11054  Silene gallica Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  LA204646  Silene occidentalis E. B. Copeland; 1930-7-28 635 Butte Jonesville 1550.0 Comment
  CHSC65098  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1995-8-2 7170 Butte High Cascade Range. Scotts John Rd. (Forest Rd. 26N11) 1.5 mi N of Jonesville Rd. (Forest Rd. 26N27), between Spurs A and B. 1828 Comment
  UC600620  Silene occidentalis subsp. longistipitata H. F. Copeland 1924-8-11 880 Butte Jonesville Comment
  CHSC115421  Silybum marianum Kate Ronan 2013-5-19 Butte Upper Bidwell Park, Wildwood Trail near golf course. 89 Comment
  CHSC484  Sinapis arvensis G. Spurlock 1935-5-20 Butte Chico. Orchards and grainfields. 57 Comment
  CHSC80520  Sinapis arvensis Vernon H. Oswald 2001-4-1 9993 Butte Grainland Rd (Pratt Grant Rd) 0.75 mi east of Seven Mile Lane, southwest of Chico. 30 Comment
  CHSC35760  Sisymbrium altissimum R. E. Preston 1982-6-18 302 Butte In meadow; site of Merrimac, ca. 22 mi ne of Oroville. 1173 Comment
  CAS-BOT-BC135399  Sisyrinchium H. F. Copeland 1920-8-29 165 Butte Jonesville Meadow 1219 Comment
  SEINET12051032  Sisyrinchium bellum Unknown 1987-1 1072 Butte Stirling City Quad, 7 km N of Inskip on Bull Hill Rd Comment
  JEPS88523  Smilacina racemosa Lowell Ahart 1996-6-5 7683 Butte about 1/10 mi n of the bridge across the South Fork of the Feather River (about 1 mi n of Golden Trout Crossing, about 7 air mi e of Feather Falls, on the east side of river) 914 Comment
  SEINET10472651  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1978-7-18 Taylor 1700 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CDA5908  Solanum carolinense Agricultural Commissioner 1959-7-13 Butte Western Pacific Railroad, Oroville. 0 Comment
  SEINET10865539  Solanum nodiflorum Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4228 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CHSC1940  Solanum parishii V. Holt 1935-4-5 Butte Honey Run grade. 365 Comment
  CHSC67398  Solanum parishii James D. Jokerst; R. A. Schlising 1985-4-8 2226 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 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
  RSA724887  Solidago canadensis subsp. elongata L. Ahart 2006-8-15 13193 Butte On the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 mile (air) northwest of Jonesville, about four miles (air) northeast of Butte Meadows. 1517 Comment
  CHSC64039  Solidago elongata S. C. Morey 1983-8-4 718 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  UC1999867  Solidago elongata J. C. Semple, S. Heard 1986-8-14 8432 Butte Jonesville, banks of Butte Creek, by road to Butte Meadows. Comment
  UC426994  Solidago elongata E. B. Copeland 1930-8-27 499 Butte Jonesville 1500 Comment
  CHSC39344  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
  UC573852  Sorghum halepense H. S. Yates 1936-8-19 6124 Butte 10 mi. s. Durham; Chico Quad. Comment
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Nov 12 2007
  UCR219103  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15601 Butte Sacramento Valley, Honcut, on Palermo-Honcut Highway, 0.1 mile north of Lower Honcut Road 35 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
  CHSC3747  Spartium junceum R. L. Adams 1964-4-14 57 Butte Elliot Road 1/2 mile from Skyway on E, side of road, Paradise. Comment
  CAS-BOT-BC389945  Spergula arvensis Lowell Ahart 1990-1-17 6406 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  JEPS98351  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 8388 Butte 4 mi NE of Honcut (100 yds SE of the barn, about 1/4 mi NE of Honcut Cemetery) 54 Comment
  CHSC112243  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  UCD99249  Spergularia marina P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  CHSC90650  Spergularia rubra Lowell Ahart 2005-4-2 11688 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
  SEINET10537508  Spergularia rubra Mary Susan Taylor 1979-8-4 Taylor 2182 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  SEINET10454595  Sphenosciadium capitellatum Mary Susan Taylor 1978-7-18 Taylor 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  SD2172  Spiraea densiflora E. B. Copeland 1931-6-19 649 Butte Jonesville; at the Summit. 2100 Comment
  CAS-BOT-BC149708  Spiraea splendens A. A. Heller 1914-8-7 11665 Butte Summit back/east of Jonesville 2133 Comment
  CHSC2431  Spiranthes porrifolia R. Carter 1965-6-15 232 Butte Found 0.5 mi. N of Derrick Rd. on Old Cherokee Rd. along W side of road ca. 5' from edge of road, North Table Mountain ca. 5 mi. N of Oroville. 335 Comment
  SEINET10938417  Spiranthes romanzoffiana Mary Susan Taylor 1978-1 Butte Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC96310  Stachys ajugoides var. rigida L. P. Janeway 2006-8-12 8839 Butte Northern High Sierra Nevada. At Concow Road crosiing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  CHSC84398  Stachys pycnantha Lowell Ahart 2003-7-23 10439 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 Comment
  RSA4123  Stachys rigida subsp. quercetorum E. B. Copeland 1930-7-20 s.n. Butte Jonesville 1500 Comment
  CHSC39548  Stachys stricta Lowell Ahart 1983-7-29 4217 Butte About 2 1/2 miles west on Bloomer Hill Road from the Oroville Quincy Highway, about 13 miles north of Oroville. 500 Comment
  SD60318  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  CHSC48275  Stellaria crispa Vernon Oswald 1987-8-10 3208 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. On the edge of a streamlet at the e end of the largest (south) lake. 1935 Comment
  JEPS87171  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  JEPS122000  Stellaria media Lowell Ahart 2014-5-13 19463 Butte Below the high water line of Lake Oroville, about 100 yards west of the poor parking area, about 30 yards east of McCabe Creek, about 11 miles (air) east of Oroville. Comment
  CAS-BOT-BC395120  Stellaria nitens Ahart; Jokerst 1985-3-24 4862 Butte W of Lunt Road, about 1/2 mile N of the intersection of Lunt Road and Highway 70, N of Yankee Hill 550 Comment
  RSA0118747  Stephanomeria elata Lowell Ahart 2014-8-24 19725 Butte On the north side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC51043  Stephanomeria exigua subsp. macrocarpa Vernon Oswald 1983-10-2 1049 Butte Upper Bidwell Park, Chico, on the north rim about half way between the heads of the intermittent streams which flow into Sycamore Creek. 347 Comment
  CHSC60963  Stephanomeria lactucina Lowell Ahart 1993-6-26 7027 Butte On the west side of the dirt road, Mooreville Ridge, about 1 mile west of the Lost Creek Reservoir. 1188 Comment
  CHSC51044  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1983-7-15 869 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. at the e entrance to Brown's Hole. Road cut. 231 Comment
  CHSC61773  Stephanomeria virgata subsp. pleurocarpa Vernon H. Oswald 1993-8-31 5886 Butte Hwy. 70 at Cresta Rest (near the Butte-Plumas county line), along the PG and E service road to the falls on Bear Ranch Creek. On a bank near the bottom of the road. 457 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
  CHSC47387  Streptanthus longisiliquus Lowell Ahart 1983-9-17 4434 Butte Along the edge of the dirt road, about 2 1/2 miles south of Stirling City. 1005 Comment
  CHSC48347  Streptanthus longisiliquus Vernon Oswald 1983-6-22 748 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  JEPS111356  Streptanthus longisiliquus G. L. Clifton 1997-6-13 35529 Butte 0.8 km N of Robley Point; Paradise East 938 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
  HSC96693  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte N High Sierra Nevada, NW side of Rim Rd. (Ponderosa Way) at S end of Rocky Ridge and S end of its serpentine openings 847 Comment
  CAS-BOT-BC87515  Streptanthus tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Oroville Ranger Station. Bald Rock Compartment. Upper end of Galen Ridge. 1036 Comment
  CAS-BOT-BC87517  Streptanthus tortuosus W. P. Vestal; A. G. Vestal 1947-4-30 s.n. Butte Table Mountain, northeast of Oroville. Comment
  CHSC36692  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  UCD116316  Streptanthus tortuosus R. E. Preston 1996-5-22 938 Butte along Highway 70, 0.1 mile west of access to Cresta Powerhouse. 457 Comment
  CHSC62098  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CHSC62538  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-10 4380 Butte Plumas National Forest, La Porte Ranger District. Southwest side of Warthan Ridge, ca 1.5 mi east of Bald Rock Dome. 822 Comment
  SEINET10940278  Styrax officinalis var. fulvescens Mary Susan Taylor 1978-7-21 Taylor 1837 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CAS-BOT-BC234615  Symphoricarpos mollis F. N. Bassett 1923-7-16 s.n. Butte Jonesville via Butte Meadows Comment
  CAS-BOT-BC97686  Symphyotrichum chilense Lowell Ahart 1984-12-28 4833 Butte about 1/2 mile north-east of the West Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oroville 400 Comment
  CAS-BOT-BC99037  Symphyotrichum cusickii Lowell Ahart 1981-9-18 3179 Butte Sierra Nevada - Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC64036  Symphyotrichum foliaceum var. parryi S. C. Morey 1983-9-18 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  CHSC69037  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico Comment
  UCD128107  Tauschia hartwegii Joe Connell 2003-5-5 s.n. Butte Yankee Hill. 1500-2000 ft. Comment
  CAS-BOT-BC81330  Taxus brevifolia Clarence R. Quick 1952-6-29 52 -94 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  RSA32873  Tellima grandiflora A. A. Heller 1919-5-18 13173 Butte Butte County: Mosquito Creek betw Appleton and Coutolence. 610 Comment
  CHSC52196  Thalictrum fendleri var. polycarpum L. P. Janeway 1989-5-11 3232 Butte Along Deadwood Cr at jct of Concow and Jordan Hill Roads. 518 Comment
  UC480872  Thalictrum fendleri var. polycarpum R. M. Austin July 1896 655 Butte Coby<?> Comment
  UC444993  Thalictrum sparsiflorum E. B. Copeland 1930-8-26 Butte above Butte Creek; Jonesville 1800 Comment
  SBBG119897  Thelypteris nevadensis L. Ahart 2003-8-26 10545 Butte W side of dirt rd, ca. 0.25 mi N of where Pinkard Crk flows into the Lost Crk Reservoir, ca. 0.5 mi N of the Lost Crk Reservoir Dam, ca. 1 air mi NW of the Sly Crk Reservoir Dam 996 Comment
  CHSC2899  Thelypteris palustris G. H. Roseman 1939-6-1 Butte Comment
  CAS-BOT-BC197364  Thinopyrum intermedium subsp. barbulatum M. S. Taylor 1978-7-21 1835 Butte In Big Bald Rock parking lot 997 Comment
  CAS-BOT-BC88206  Thysanocarpus curvipes A. A. Heller 1919-3-29 13095 Butte Feather River near Yankee Hill. Comment
  CHSC35020  Thysanocarpus curvipes R. E. Preston 1982-3-25 199 Butte W side of Hwy 70 at jct with Yankee Hill Rd, ca. 13 mi n of Oroville. 518 Comment
  CHSC35022  Thysanocarpus curvipes R. E. Preston 1982-3-25 202 Butte Along dirt road on n side of Feather River canyon, ca. 1/2 mi e of Pulga. 487 Comment
  CHSC50029  Thysanocarpus curvipes Lowell Ahart 1990-3-9 6415 Butte On the banks on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  RSA755350  Thysanocarpus curvipes var. curvipes L. P. Janeway 2008-3-18 9233 Butte Cascade Range Foothills. East edge of City of Chico, south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC103688  Thysanocarpus curvipes var. elegans Lowell Ahart 2010-4-30 16597 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
  CHSC35747  Thysanocarpus curvipes var. elegans R. E. Preston 1982-4-29 269 Butte At side of Hwy 70, ca. 0.2 mi s of Butte/Plumas Co. line. 487 Comment