Search Results — 2000 specimen records retrieved (1593 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
  JEPS117174  Abies magnifica var. magnifica Lowell Ahart 2010-9-21 17196 Butte On the west side of the County Road, about 1/4 mile north of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1911 Comment
  RSA0115090  Acer circinatum Tim Hanson 2013-6-24 11 Butte Northern Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. 902 Comment
  CHSC103953  Acer macrophyllum Lowell Ahart 2010-5-23 16732 Butte On the west side 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
  CHSC99657  Acer macrophyllum H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  SEINET12236469  Acer macrophyllum Unknown 1980-1 10 Butte 8 mi NNW of Lumpkin Rd on Craig access rd on W side of rd. 18 mi E of Oroville Comment
  JEPS119586  Acer negundo Lowell Ahart 2012-4-17 17871 Butte On the west side of Gridley Road, about 1/8 mile southeast of the bridge over the Feather River, about 2 miles west of Highway 70. Comment
  CHSC77293  Acer negundo var. californicum L. P. Janeway 2000-3-29 6641 Butte Sacramento Valley. In narrow riparian strip along Little Chico Creek at Salem Street in Chico. 60 Comment
  CAS-BOT-BC210632  Achnatherum lemmonii Lowell Ahart 1987-5-9 5583 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-BC210642  Achnatherum lemmonii John Thomas Howell 1962-6-16 37491 Butte Magalia 731 Comment
  CHSC41350  Achnatherum lemmonii R. A. Schlising 1983-6-4 4417 Butte E part of county, NE of village of Feather Falls at Lumpkin Ridge. 1264 Comment
  CHSC42447  Achnatherum lemmonii Lowell Ahart 1987-5-9 5583 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
  JEPS108565  Achnatherum lemmonii L. P. Janeway 2005-5-29 8415 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga 960 Comment
  POM196134  Achnatherum occidentale subsp. californicum E. B. Copeland 1929-7-16 342 Butte Jonesville 1550 Comment
  CHSC94126  Achnatherum stillmanii Lowell Ahart 2006-6-24 12852 Butte On the east side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  SBBG17315  Achyrachaena mollis M. Vincent 1962-4-15 191 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  UCD80027  Achyrachaena mollis CNPS SN Foothill Team 2005-4-12 SNFN 0077 d Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge across a diversion canal). 87 Comment
  SEINET11839288  Achyrachaena mollis Unknown 1975-1 25 Butte ca 5 m from Skyway Rd., 5.6 mi E of Chico 305 Comment
  CHSC42108  Acmispon americanus var. americanus Lowell Ahart 1986-11-14 5479 Butte On the drying margins of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC97929  Acmispon americanus var. americanus D. G. Kelch 2006-8-2 06 .345 Butte Along Butte Creek, north of Durham-Dayton Hwy. 40 Comment
  UCD103766  Acmispon americanus var. americanus Collector unknown Date unknown 12845 Butte Butte Meadows. Comment
  UCD103796  Acmispon americanus var. americanus A. A. Heller 1914-7-24 11625 Butte Forest Ranch. 731 Comment
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC879  Acmispon parviflorus A. Koopman 1929-4-21 Butte Near Pentz. 152 Comment
  UC1594727  Aconitum columbianum Lowell Ahart 1992-7-26 6844 Butte ca. 2 (air) mi. n Snow Mt. (ca. 1/2 mi. n. of Carr Mine) 1767 Comment
  UCD98572  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville. At 'the Summit. 2100 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  SD5472  Adenocaulon bicolor E. B. Copeland 1930-8-9 Butte Jonesville 1500 Comment
  CHSC23644  Adiantum jordanii M. S. Taylor 1976-4-4 1059 Butte On s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  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
  CHSC87785  Aegilops triuncialis Brian Elliott; Linnea Hanson 2003-6-9 11635 Butte Plumas National Forest, about 2 miles west of the town of Feather Falls, and 4 miles north of Old Forbestown, on Forest Road 20N67. 731 Comment
  SEINET10935076  Aegilops triuncialis Mary Susan Taylor 1980-5-24 Taylor 2740 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC97016  Agoseris grandiflora L. P. Janeway 2007-7-9 9110 Butte Northern High Sierra Nevada. Plumas National Forest; near Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CHSC33795  Agoseris retrorsa M. S. Taylor 1981-5-4 3594 Butte SW of 21N80, S side of Spur rd near plantation, ridge south of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 Comment
  CHSC86108  Agoseris retrorsa L. P. Janeway; John Hunt 2003-4-22 7763 Butte Northern Sierra Nevada Foothills. Near tip of peninsula into west side of Lake Oroville, at Bloomer Point Campground; 4.3 km southwest of Bloomer Hill. 283 Comment
  CHSC87805  Agoseris retrorsa Paul Maslin 2004-4-21 23 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611440E 4411034N. 533 Comment
  CAS-BOT-BC127331  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC127334  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Along bands of North Honcut Creek. Peter Ahart Ranch. Honcut. 50 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
  CAS-BOT-BC139719  Agrostis gigantea Lowell Ahart 1987-6-9 5731 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC78353  Agrostis hendersonii Lowell Ahart 2000-6-27 8515 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  UC1609039  Agrostis idahoensis Lowell Ahart 1993-8-31 7139 Butte about 1 1/2 mi se Bald Mountain (n side of dirt road to Big Kimshew Creek, ne of Stirling City); Big Kimshew Creek 1493 Comment
  CHSC38780  Agrostis microphylla Vernon Oswald 1983-5-8 457 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC71207  Agrostis microphylla Lowell Ahart 1998-5-30 7961 Butte About 100 yards west of the lone oak tree, wet of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC8192  Agrostis microphylla D. McClain 1969-4-18 63 Butte 500 yds. N. of gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its juction with Feather River Highway. 487 Comment
  JEPS117408  Agrostis microphylla Lowell Ahart 2010-5-16 16700 A Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 364 Comment
  JEPS122225  Agrostis microphylla Lowell Ahart 2014-4-20 19383 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CDA34632  Agrostis pallens L. Ahart 2009-6-19 15929 Butte About 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwelll Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 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
  SEINET11688338  Agrostis scabra L. Ahart, Ahart, P. 1984-1 4738 Butte ca 1.5 mi SE of Bald Mountains, 0.75 mi W of Oak Point, ca 4 mi NE of Stirling City 1500 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
  JEPS93859  Agrostis stolonifera Lowell Ahart 1998-7-18 8041 Butte about 7 air mi n of Oroville (sw 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
  RSA769591  Agrostis variabilis L. Ahart 2010-9-28 17257 Butte About 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC31162  Aira caryophyllea M. S. Taylor 1980-3-1 2351 Butte SE facing cliff looking into Hamlin Canyon, ca. 1/2 mi e of Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC38782  Aira caryophyllea Vernon Oswald 1983-3-6 123 Butte Upper Bidwell Park, Chico, on the north rim 2.7 mi e of the power lines. 341 Comment
  CHSC6700  Aira caryophyllea Marilyn Lee 1968-4-19 127 Butte Side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards E. of cemetary, Table Mt. Comment
  CAS-BOT-BC138411  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-4 2191 Butte Near Hurleton. 600 Comment
  CHSC30549  Aira elegans J. D. Jokerst; M. S. Taylor, L. Ahart 1980-4-7 559 Butte NE of the jct of Upper Rocky Honcut Cr and Swedes Flat Rd (10 mi SE of Oroville). Comment
  JEPS110041  Alisma plantago-aquatica Lowell Ahart 2006-10-8 13437 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  JEPS120839  Alisma triviale Lowell Ahart 2013-7-9 18836 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  HSC39466  Allium amplectens J. P. Smith, J. O. Sawyer 1973-4-14 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  JEPS82253  Allium amplectens Roger Raiche 1983-4-13 30188 Butte slope above Honey Run Covered Bridge (Honey Run Road) Comment
  SEINET257320  Allium amplectens J. L. Reveal 1988-6-3 7005 Butte Paradise 0.2 mi S of Bennett Rd along South Libby Rd onto N end of Morgan Ridge 518 Comment
  SEINET7072746  Allium amplectens A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles northeast of Oroville on Route 10 [Mountain Boulevard]. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 619496mE, 4380367mN. Coordinate datum: NAD 27.) Comment
  CHSC49473  Allium campanulatum Vernon Oswald 1983-6-22 746 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy 32. 1386 Comment
  SD589  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville, common in loose soil in open pine woods. 1550 Comment
  UC600451  Allium campanulatum H. F. Copeland 1930-7-19 Butte Jonesville 1524 Comment
  CDA43368  Allium cepa D. G. Kelch 2012-9-19 12 .357a Butte Oroville, immediately west of sewage treatment plant. Comment
  CAS-BOT-BC466714  Allium cratericola Gladys L. Smith 1973-1-1 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  SEINET10905148  Allium cratericola Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4863 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CDA13909  Allium jepsonii G. F. Hrusa, T. D. Wilfred 1997-7-3 13990 Butte Sierra Nevada; Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC37130  Allium jepsonii M. S. Taylor; R. A. Schlising 1982-6-24 4750 Butte W side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70, ca. 15 air mi n of Oroville. 792 Comment
  CHSC63973  Allium jepsonii B. Castro 1994-6-28 515 Butte Ca 0.4 mi S of town of Pulga. On W side of Pulga Rd, ca 0.4 mi N of its jcn with Hwy 70 by the Pulga Bridge. 487 Comment
  RSA770536  Allium jepsonii S. Mashayekhi, M. Biabani 2010-6-11 SM 061 Butte 0.29 miles north on Andy Mt. Road with its junction of Hwy 70. West side of road. 955 Comment
  CHSC29962  Allium membranaceum R. A. Schlising; P. Broyles 1979-5-15 3407 Butte NE of Magalia and NW of Sawmill Peak. Comment
  CAS-BOT-BC472965  Allium membranaceum Clarence R. Quick 1952-7-1 52 -119 Butte Mill Creek Road between Feather River Highway and Coyote Cap; Sierra Nevada Comment
  CAS-BOT-BC472969  Allium membranaceum Lowell Ahart 1984-6-10 4698 Butte Along road to Forbestown Diversion Dam; near a small stream, along the road about 2 miles southwest of the Forbestown Diverson Dam, northeast of Forbestown. 700 Comment
  RSA325885  Allophyllum divaricatum L. Ahart, P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  SEINET12329560  Allophyllum divaricatum Unknown 1984-1 4664 Butte at the Ponderosa Dam, ca 2 mi NW of Forbestown, Yello Pine Forest 370 Comment
  RSA173366  Allophyllum integrifolium H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  CAS-BOT-BC170911  Alnus rhombifolia Javier Penalosa 1962-6-18 2440 Butte Near confluence of French and Peavine Crks. 609 Comment
  CAS-BOT-BC170914  Alnus rhombifolia A. A. Heller 1914-2-2 11167 Butte Canon [canyon] of Bog Chico creek E of Chico Comment
  CHSC27225  Alnus rhombifolia P. Moyer 1971-11-1 86 Butte CSUC campus. Front of campus Copy Cat. 60 Comment
  CHSC31577  Alnus rhombifolia L. Ahart 1976-1-22 998 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38267  Alnus rhombifolia Vernon Oswald 1982-12-31 41 Butte Bidwell Park, Chico, at Five Mile Recreation Area. 85 Comment
  CHSC46477  Alnus rhombifolia Lowell Ahart 1977-11-21 1226 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 54 Comment
  UCD169392  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  CHSC47603  Alopecurus saccatus Lowell Ahart 1982-5-10 3429 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10478812  Amaranthus blitoides Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5159 Butte T17N R1E s/nw sec 15. Pennington quad. Graylodge Wildlife Refuge, on n side of loop rd w of HQ, ca. 12 mi sw of Gridley. 60 ft. 18 Comment
  CHSC97127  Amaranthus hybridus Lowell Ahart 2007-7-2 14241 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 362 Comment
  CHSC51347  Amaranthus powellii Vernon Oswald 1990-9-22 4453 Butte Growing in median along the Esplanade between 10th and 11th avenues. 59 Comment
  CHSC61022  Amaranthus rudis Vernon H. Oswald 1993-7-29 5740 Butte Arroyo Chico. S side of Kusal Slough Bridge on Sacramento Ave., 0.25 mi E of Sutter Ave. (Upper River Rd.) near the Sacramento River W of Chico. 39 Comment
  CHSC38320  Ambrosia psilostachya Vernon Oswald 1983-8-27 1033 Butte Upper Bidwell Park, Chico, between the parking areas at Bear Hole and Diversion Dam. 121 Comment
  CHSC85444  Ambrosia psilostachya R. D. Fischer 2003-11-16 16 Butte Sierra Nevada foothills between Chico and Forest Ranch on edge of hwy 32 at 10 Mile House Rd, (Greengate). The upper most parking area for accessing upper Bidwell Park. 466 Comment
  CAS-BOT-BC142950  Amelanchier utahensis H. F. Copeland 1929-6-10 1208 Butte Jonesville 1524 Comment
  CHSC1027  Ammannia coccinea V. Holt 1945-10-2 Butte Butte Creek canyon. 91 Comment
  SBBG117249  Ammannia coccinea B. Crampton 1957-9-17 4631 Butte 5 mi NW of Biggs, Biggs Rice Experiment Station Comment
  CHSC42114  Ammannia robusta Lowell Ahart 1986-11-14 5476 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC3188  Amsinckia intermedia Dona Kingsford 1966-3-3 Butte 1.3 miles south west of Hooker Oak Tree in a dry open field, Chico. Comment
  CHSC3615  Amsinckia intermedia R. Jaegel 1966-3-2 37 Butte 4 miles Northeast of Chico. On a south slope of a small drainage in Upper Bidwell Park. Comment
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line 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
  UC725509  Amsinckia lycopsoides A. A. Heller 1930-3-23 15356 Butte grade toward Paradise just beyond Pentz Comment
  CHSC44475  Amsinckia menziesii var. menziesii Lowell Ahart 1988-5-13 5999 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  NY622098  Amsinckia nitidicaulis A. A. Heller 1918-4-10 12982 Butte At Chico; especially plentiful as a weed about the high school Comment
  POM57372  Ancistrocarphus filagineus A. A. Heller, H. E. Brown 1902-5-12 s.n. Butte Grade between Clear Creek and Paradise. Comment
  CHSC108806  Andropogon glomeratus var. scabriglumis Lowell Ahart 2012-4-9 17829 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  UCR21785  Andropogon virginicus Paul Reisentz 1979-5-13 s.n. Butte Canyon c. 3 mi southe of the Butte-Plumas Co. line, 1 mi north of Cresta Point Houses, Hwy 70 Comment
  CHSC61625  Angelica breweri Lowell Ahart 1993-9-8 7174 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  UCD116183  Anoda cristata Ball 1939-12-1 s.n. Butte Banger garden. Comment
  SEINET10474094  Antennaria rosea Lowell Ahart 1985-6-17 Ahart 5048 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC261  Anthemis cotula M. Roberson 1934-3-23 Butte Near Paradise along Skyway. 548 Comment
  CAS-BOT-BC84693  Anthemis cotula Grace Kermode 1899-6-9 s.n. Butte Big Chico Creek Comment
  CAS-BOT-BC84694  Anthemis cotula A. A. Heller 1923-8-13 13830 Butte Chico Comment
  SEINET10473583  Anthemis cotula Mary Susan Taylor 1975-10-3 Taylor 939 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC14026  Anthriscus caucalis J. A Brattan 1974-4-15 5 Butte Abundant at the base of a cliff 300 yds s of the 9th hole on the Bidwell Municipal Golf Course. 91 Comment
  CHSC36168  Anthriscus caucalis G. H. Snodgrass 1981-4-11 PT- 12 Butte Ca. 5 mi e of Chico, ca. 200 yds e of Rockwood Lake entrance on Honeyrun Rd. (previously Humbug Rd.). 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
  CHSC43141  Antirrhinum leptaleum R. Banchero; R. Schlising 1980-9-6 331 Butte 0.7 mi ne of the jct of Lumpkin and Forbestown Rd. 493 Comment
  CHSC111362  Aphyllon purpureum Lowell Ahart 2012-5-4 17987 Butte On damp dark rocky soil, on and around basalt on a steep slope, about 200 feet south of stream in Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 286 Comment
  RSA253211  Apocynum androsaemifolium subsp. pumilum A. A. Heller 1938-7-20 s.n. Butte High ridge betw Inskip and chaparral. 1524 Comment
  CHSC38261  Apocynum cannabinum Vernon Oswald 1983-8-19 1009 Butte Upper Bidwell Park, Chico, near the e end of Yahi Trail. 207 Comment
  CAS-BOT-BC392109  Aquilegia formosa A. A. Heller 1914-6-22 11504 Butte About Chico Meadows 1219 Comment
  UC436300  Aquilegia formosa E. B. Copeland 1930-7-12 Butte above Jonesville; head of Butte Creek area 1800 Comment
  CHSC108826  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC58257  Arabidopsis thaliana Lowell Ahart 1992-3-9 6737 Butte Below the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC109  Aralia californica M. Underhill 1952-7-7 Butte 609 Comment
  CHSC23403  Arbutus menziesii M. S. Taylor 1976-3-6 1007 Butte Ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 miles E of Oroville. Comment
  UC463026  Arceuthobium campylopodum E. B. Copeland 1931-7-13 Butte Big Summit Jonesville 640 Comment
  CHSC4574  Arceuthobium occidentale C. Glascock 1965-1-27 194 Butte Foothills 2 mi. e of Oroville on Oro-Quincy Hwy. ca. 30 ft. downhill from midpoint of driveway at 2723 Oro-Quincy Hwy., Oroville. 38 Comment
  NY9763  Arctostaphylos A. A. Heller 1940-2-19 15500 Butte Neal Road 3 mi W of Paradise near the upper limit of the Upper Sonoran Life Zone Comment
  CHSC115454  Arctostaphylos manzanita M. Sutton; C. Yasuda, S. Luse 2013-3-5 7 Butte Ten mile house trail. 391 Comment
  RSA633010  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27447 Butte East of Chico, Cohasset Road. 170 Comment
  RSA633012  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27457 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  CAS-BOT-BC38827  Arctostaphylos manzanita subsp. manzanita Lewis S. Rose 1945-5-12 45033 Butte Richardson Springs 304 Comment
  CHSC24701  Arctostaphylos manzanita subsp. manzanita J. R. Nelson 1976-3-1 6 Butte 9 mi E of Chico on Hwy 32. 548 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
  CAS-BOT-BC24296  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte About 2 mi. w. of Forest Ranch. Comment
  JEPS117428  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville 741 Comment
  CAS-BOT-BC38562  Arctostaphylos mewukka subsp. truei John Thomas Howell 1967-6-22 42638 Butte Magalia. 701 Comment
  CAS-BOT-BC38571  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight 1989-4-17 6480 Butte 2 mi. n. on Coutolenc Road. from junction of skyway. 701 Comment
  CAS-BOT-BC38573  Arctostaphylos mewukka subsp. truei Walter Knight; Irja Knight; Tiffany Knight 1988-7-24 6303 Butte Paradise at berkshire Way and Bille rd. just off The Skyway. 274 Comment
  CHSC32678  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-3-24 3441 Butte S side of Hwy 70 just E of Heinz Creek, ca. 1 mi E of Pulga. 487 Comment
  POM219427  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  UC202367  Arctostaphylos patula H. M. Hall July 1914 9808 Butte near Jonesville 1645 Comment
  UCD51950  Arctostaphylos truei John Thomas Howell 1975-6-15 51093 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  UCD52627  Arctostaphylos viscida R. R. Kehlor 1951-4-14 25 Butte Foothills of Sierra Nevada, 6 1/2 miles east of Oroville, on Mt. Ida Road, Butte County, California. Comment
  SEINET10449338  Arctostaphylos viscida Mary Susan Taylor 1981-3-18 Taylor 3424 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  SEINET10907226  Arctostaphylos viscida Mary Susan Taylor 1974-3-3 Taylor 71 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CAS-BOT-BC47368  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 miles from Chico Comment
  CAS-BOT-BC48290  Arctostaphylos viscida subsp. viscida John Thomas Howell 1955-6-15 30489 Butte 6 miles from Paradise on road to Pentz 426 Comment
  CAS-BOT-BC48295  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51085 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC48298  Arctostaphylos viscida subsp. viscida A. A. Heller 1914-5-18 11403 Butte Between Chico and Forest Ranch, 14 miles from Chico 731 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
  CHSC78553  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC137555  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico. Comment
  CAS-BOT-BC146312  Aristida ternipes var. gentilis Lowell Ahart 1986-11-14 5466 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC41916  Aristida ternipes var. hamulosa Lowell Ahart 1983-8-16 4277 Butte Along the edge of Highway 32 about 1 mile east of Chico. 100 Comment
  CAS-BOT-BC400422  Aristolochia californica Mrs. C. C. Bruce 1897-3-1 1794 Butte Little Chico Comment
  CHSC65681  Aristolochia californica Vernon H. Oswald 1996-3-29 7277 Butte Sacramento Valley, Sacramento River National Wildlife Refuge, Llano Seco Unit, toward S end of the riparian Sanctuary (Fish Camp on the ranch map). 28 Comment
  POM165725  Aristolochia californica E. B. Copeland 1903-4-10 s.n. Butte Chico Comment
  SEINET10475903  Aristolochia californica Mary Susan Taylor 1979-3-20 Taylor 1951 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
  SEINET10937924  Aristolochia californica Mary Susan Taylor 1975-4-29 Taylor 543 Butte Abundant on S side of Hwy 70, ca. 25 mi NE of Oroville, near Bear Creek, ca. 1 mi SW of Butte-Plumas County line; with Styrax officinalis ssp. californica, Draperia systyla; on granitic soils. Comment
  CHSC45778  Arnica dealbata Vernon Oswald 1984-7-2 1332 Butte Intersection of Skyway (Bull Hill Rd.) and Humbug Rd. 1584 Comment
  UC832874  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte edge of the forest about Chico Meadows Chico Meadows 1219 Comment
  CAS-BOT-BC82412  Arnica discoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC38322  Artemisia douglasiana Vernon H. Oswald 1983-8-19 1006 Butte Upper Bidwell Park, Chico, near the E end of Yahi Trail. 207 Comment
  RSA724814  Artemisia douglasiana L. Ahart 2006-9-11 13273 Butte South edge of the North Fork of the Feather River, north side of highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 air miles northeast of Oroville. 432 Comment
  CAS-BOT-BC93885  Artemisia dracunculus Lowell Ahart 1987-8-3 5850 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC101158  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 271 Comment
  CHSC3146  Asclepias cordifolia Gary Dutton 1966-4-23 254 Butte Found 9 miles from Chico on Hwy. 32. Comment
  UCD121248  Asclepias cordifolia L. Ahart 1977-4-16 1309 Butte Near Honcut. 50 Comment
  JEPS115885  Asclepias eriocarpa Lowell Ahart 2009-6-18 15915 Butte On dry soil, on the east side of a wash, south of the fence, about 40 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  CHSC28669  Asclepias speciosa S. Posner 1972-10-12 Butte Upper Bidwell Park, North bank Chico Creek. Vicinity of Archery Range. Chico. Comment
  CHSC2221  Asparagus officinalis D. Smith 1935-5-23 Butte Vacant lot in Chico. 57 Comment
  HSC66084  Aspidotis carlotta-halliae M. S. Taylor 1979-3-19 1927 Butte In the vicinity of Pulga bridge over Feather River on Hwy. 70, 25 mi. NE of Oroville 488 Comment
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Mar 28 2013
  CAS-BOT-BC65917  Aspidotis densa John Thomas Howell 1955-6-14 30464 Butte Magalia 731 Comment
  CHSC86436  Aspidotis densa Jenny Marr 1994-6-13 84 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  CAS-BOT-BC178457  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CAS-BOT-BC178458  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about five miles above Chico Comment
  CHSC45902  Astragalus gambelianus Lowell Ahart; Jim Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 518 Comment
  JEPS119691  Astragalus gambelianus Lowell Ahart 2012-5-2 17957 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  SEINET7042706  Astragalus gambelianus A. G. Vestal 1963-5-9 s.n. Butte Route 99E 11.8 miles north of Chico. Nelson quadrangle UTM Zone 10, 605211mE, 4382252mN. Comment
  CHSC29234  Astragalus pauperculus M. S. Taylor 1980-3-15 2380 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
  CHSC43661  Astragalus pauperculus Vernon Oswald 1985-3-30 1688 Butte Upper Bidwell Park, Chico, near the 3rd tower n of Upper Park Rd. of the transmission line crossing the park w of Horseshoe Lake. 91 Comment
  CHSC54383  Astragalus pauperculus M. Bailey 1991-3-15 552 Butte Butte College campus, ca 700 ft n of Pentz Road, on the eastern and southern ridges of knoll south of the Fire Training area. Near fence line. 109 Comment
  CHSC831  Astragalus pauperculus V. Holt 1941-3-1 Butte Table Mountain near Oroville. 457 Comment
  SEINET10452231  Astragalus pauperculus Mary Susan Taylor 1980-3-15 Taylor 2380 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CAS-BOT-BC68693  Athyrium filix-femina var. californicum M. S. Taylor 1981-4-16 3545 Butte Along creek near 21N31Y, ca. 2 mi N of Big Bald Rock, ca. 1 mi SE of Brush Creek on Oroville-Quincy Hwy. Brush Creek qd. 1036 Comment
  CAS-BOT-BC68694  Athyrium filix-femina var. californicum M. S. Taylor 1981-5-14 3707 Butte S side of 22N49, at jct where creek crosses the rd. (Next creek e of Little Ram Creek), 975 Comment
  CHSC33576  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-16 3545 Butte Near 21N31Y, ca. 2 mi n of Big Bald Rock, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  UC398876  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  UCSB63847  Athyrium filix-femina var. cyclosorum Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC4073  Athysanus pusillus H. E. Lindahl 1967-4-4 14 Butte 1/2 mi. s of intersection of Neal Rd. and Chico-Oroville highway. Comment
  CAS-BOT-BC13742  Athysanus pusillus Lowell Ahart 1990-3-9 6414 Butte On east side of Pacific Heights Road, about 3.5 miles SW of Oroville. 110 Comment
  UC1586519  Atriplex argentea var. mohavensis Lowell Ahart 1991-9-6 6712 Butte about 10 mi se Gridley (on n side of Rutherford Road, about .12 mi w of Pennington Road, w of Parking Area, Gray Lodge Waterfowl Management Area); Gray Lodge Waterfowl Management Area 30 Comment
  CHSC55054  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, about 1/8 mile west of Pennington Road, south of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  JEPS90594  Atriplex minuscula Vernon H. Oswald 1993-7-29 5729 Butte w side of levee road ca 100 ft s Parking Lot 5 on Rutherford Rd. (0.5 mi w of Pennington Rd., w of Gridley); Gray Lodge Wildlife Management Area 21 Comment
  CHSC34125  Atriplex serenana L. Ahart 1981-9-10 3145 Butte Near the entrance to the Graylodge Waterfowl Mgmt HQ, w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CAS-BOT-BC176602  Atriplex serenana var. serenana Lowell Ahart 1981-9-10 3145 Butte Gray Lodge, SW of Gridley 35 Comment
  UCD56132  Avena barbata P. B. Kennedy 1914-5-1 4752 Butte Grade to Paradise. Comment
  CHSC116021  Azolla filiculoides Lowell Ahart 2015-10-20 20570 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  SEINET3875617  Azolla filiculoides Lowell Ahart 1990-5-20 6473 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.; 0 30 Comment
  CAS-BOT-BC66256  Azolla mexicana Lowell Ahart 1975-1-9 s.n. Butte Near North Honcut Creek, 2 miles N & 3 miles E of Honcut 60 Comment
  CHSC34140  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Ca. 3/4 mi NE of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 1/8 mi S of the ORO Bangor Hwy, ca. 5 mi NE of Palermo. 100 Comment
  CHSC89489  Baccharis pilularis R. D. Fischer 2004-8-22 441 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near gated end of park property. At edge of large mdw. 217 Comment
  JEPS115039  Baccharis pilularis Lowell Ahart 2007-10-30 14508 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  CHSC44898  Barbarea orthoceras Lowell Ahart 1988-7-31 6162 Butte Along the north edge of the road, about 1 air mile north and a little east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1524 Comment
  SD48506  Barbarea verna E. K. Balls 1957-5-22 22517 Butte Southwest shore, Lake Almanor, just beyond Big Meadows Dam. 1399 Comment
  CHSC34774  Bassia hyssopifolia L. Ahart 1981-11-6 3222 Butte On banks of deep ditch, n side of rd near entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC111129  Berberis Lowell Ahart 2012-6-21 18200 Butte Lawn, on the south side of the paved park road, weest of the entrance from Woodland Avenue, Lower Bidwell Park, Chico. 62 Comment
  CHSC38266  Berberis aquifolium var. dictyota Vernon Oswald 1983-5-11 473 Butte Upper Bidwell Park, Chico, near rim rock on the brush-covered slope s of the Police Pistol Range at the Golf Course. 146 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
  CHSC27240  Betula populifolia P. Moyer 1972-3-18 150 Butte CSUC campus. L. S. courtyard. 60 Comment
  CHSC31576  Bidens frondosa Lowell Ahart 1976-6-27 1145 Butte Along the edge of North Honcut Creek, near Honcut. 45 Comment
  CHSC66355  Bidens frondosa Vernon H. Oswald 1996-6-20 7833 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 NW corner of Tract 2, Sanctuary II. 33 Comment
  SEINET10872129  Bidens frondosa Mary Susan Taylor 1982-8-14 Taylor 5139 Butte T20N R8E. Jct of French Creek and 21N56, 0.5 mi e of Mooretown Ridge Rd, ca. 3 mi n of Sly Creek Reservoir Dam, ca. 4 air mi n of Strawberry Valley. 4000 ft. 1219 Comment
  CAS-BOT-BC412960  Bistorta bistortoides H. F. Copeland 1920-8-12 132 Butte Jonesville 1219 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
  CAS-BOT-BC100691  Blennosperma nanum var. nanum Carl B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 1/2 mi. SE. of Butte Creek on Chico - Oroville Road 57 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
  JEPS88584  Bolboschoenus maritimus subsp. paludosus Vernon H. Oswald and Lowell Ahart 1996-7-22 8095 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River Sacramento River National Wildlife Refuge, Llano Seco Unit (NE corner of Tract 1.1, Sanctuary II) 33 Comment
  RSA121458  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 miles SE of Butte Meadows. 1555 Comment
  CHSC48893  Boykinia occidentalis Vernon Oswald 1985-8-12 1926 Butte Bryant Ravine Rd. at Bryant Ravine Creek, 0.2 mi s of the trailhead to Feather Falls. 746 Comment
  CAS-BOT-BC145678  Brachypodium distachyon Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. 50 Comment
  CHSC78221  Brachypodium distachyon Lowell Ahart 2000-5-16 8359 Butte On the north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  SEINET10907336  Brassica campestris Lowell Ahart 1983-2-21 Ahart 3903 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 35 m. 35 Comment
  JEPS122267  Brassica nigra Lowell Ahart 2014-4-9 19336 Butte West edge of Pennington Road, at intersection of Pennington Road and Colusa Highway, about 5 miles west of Gridley. Comment
  CHSC38059  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  JEPS120521  Brassica rapa L. P. Janeway 2012-3-30 10803 Butte Sacramento Valley. West side of Hwy 99 1.6 km south of Estates Drive, south edge of Chico. Comment
  UCD57368  Briza maxima M. S. Taylor; J. D. Jokerst and L. Ahart 1980-5-24 2745 Butte Foothill Woodland. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC145532  Briza minor A. A. Heller; H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC145542  Briza minor Lowell Ahart 1970-4-16 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41131  Briza minor Rod Bungay 1978-4-25 15 Butte Ca. 10 ft e of Cohasset Rd ca. 3 mi ne of East Ave. between Chico and Cohasset. 30 Comment
  CHSC29288  Brodiaea coronaria R. A. Schlising 1980-5-29 3604 Butte Richvale vernal pools. 1/4 mi S of jct Hwy 162 (east to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  SEINET10932596  Brodiaea coronaria A. Arthur Heller 1914-7-24 Heller 11619 Butte Butte Meadows, 4000 feet. Comment
  JEPS7735  Brodiaea elegans subsp. elegans W. L. Jepson 1934-5-4 16620 Butte 2 1/2 mi ne Cana Comment
  CHSC100803  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-3 4571 Butte SE of Stirling City at Flea Valley; dry edge of grassy meadow and at roadside. 1118 Comment
  UCD77176  Brodiaea minor Robert E. Preston 2002-6-28 1893 Butte Forbestown. 832 Comment
  UC1080383  Brodiaea minor E. K. Balls 1957-5-23 22532 Butte US Hwy 99, 1.7 mi NW from jct with road from Pentz 91 Comment
  SEINET3888972  Brodiaea multiflora Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3271 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  RSA113236  Brodiaea nana E. K. Balls, Lee W. Lenz 1955-5-13 20483 Butte 3.4 miles E. of turn-off U.S. Hwy. 99 to Oroville. 61 Comment
  SEINET10534140  Brodiaea purdyi Mrs. R. M. Austin 1896-1 Austin 816 Butte Mesa-east of Chico Comment
  CAS-BOT-BC486487  Brodiaea sierrae Lowell Ahart 1983-6-21 4081 Butte 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-BC149545  Bromus carinatus var. carinatus Lowell Ahart 1988-6-23 6073 Butte South of the intersection of Black Bart Road and Forbestown Mill Road. 670 Comment
  CAS-BOT-BC149549  Bromus carinatus var. carinatus John Thomas Howell 1961-9-22 36754 Butte Sierra Nevada. Feather River Highway 3 miles from Oroville. Comment
  CHSC38800  Bromus catharticus Vernon Oswald 1983-6-13 677 Butte Upper Bidwell Park, Chico, along the n edge of the Hooker Oak Recreation Area. 80 Comment
  CAS-BOT-BC155945  Bromus commutatus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile northeast of Forbestown. 792 Comment
  SEINET10868335  Bromus commutatus Lowell Ahart 1988-5-30 Ahart 6031 Butte Hairy Chess, On damp disturbed soil, near a seep, about 1/12 mile N of the brige across the North Fork of the Feather River, along Poe Power House Road, about 2 miles SE of Jarbo Gap. 338 Comment
  CAS-BOT-BC156030  Bromus diandrus Peter H. Raven 1953-5-9 5430 Butte 8 miles from Bangor on Oroville Road. Comment
  RSA715574  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley. At the base of the railroad, east side of the railroad tracks, south of the railroad bridge, north of Spruce street. 28 Comment
  CDA31600  Bromus laevipes L. Ahart 2004-6-22 11109 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. Comment
  CAS-BOT-BC162360  Bromus madritensis Lowell Ahart 1983-6-21 4078 Butte Along Bloomer Hill Road, ca. 0.75 mile west of the Oroville Quincy Highway, ca. 15 mile northeast of Oroville. 425 Comment
  CHSC49522  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-29 1727 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  CHSC28543  Bromus orcuttianus M. S. Taylor 1978-7-18 1674 Butte On w side of Hwy 32 on edge of forest., ca. 1/4 mi n of Forest Ranch. 718 Comment
  JEPS98571  Bulbostylis capillaris Lowell Ahart 2000-6-6 8455 Butte 5 mi(air)E of Oroville Dam (in tire ruts, bottom of old gold mining pit 200 yds NW of dirt road crossing Oregon Gulch creek, 1/4 mi N of cemetary, 1 1/2 mi S of Crystal Hill) 304 Comment
  UC1609481  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  CHSC25120  Calandrinia ciliata var. menziesii G. G. Poulsen Jr. 1971-4-13 9 Butte Ca 2 mi n. of Oregon City turn off on Cherokee Rd. Grows in clusters in open fields and in shaded areas. 426 Comment
  SEINET10906553  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 Ahart 4595 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, along Kunkle Creek, ca. 2 mi S of Paradise, E side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  JEPS95736  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
  CHSC112907  Callitriche marginata B. Castro; Robin Carter 2011-4-29 1872 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, 0.37 mi S of jcn of Hwys 99 and 162W, ca 0.6 mi N of Hamilton Rd. 36 Comment
  CHSC38283  Callitriche marginata Vernon Oswald 1983-4-6 285 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Enclosure located ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. In vernal pond. 85 Comment
  SEINET11738872  Calocedrus decurrens D. J. Straub 1977-1 17 Butte ca 300 yards SE of Magalia Reservoir & 0.5 mi N of West Branch Feather River 853 Comment
  CAS-BOT-BC487512  Calochortus albus A. A. Heller 1914-5-8 11375 Butte Plateau above Clear Creek on the Paradise road Comment
  UC600459  Calochortus leichtlinii H. F. Copeland 1932-7-24 Butte sw of Butte Creek Meadows; Jonesville 1800 Comment
  CHSC104827  Calochortus luteus Lowell Ahart 2010-6-1 16758 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  CHSC7133  Calochortus luteus M. A. Davis 1969-4-19 4 Butte Comment
  UC203655  Calochortus luteus A. A. Heller 1914-5-22 11424 Butte near Richardson Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  CHSC41119  Calochortus monophyllus J. D. Jokerst 1977-1-17 74 Butte On n. side of Humbug road, 2 mi. e. of intersection with Honey Run Road, 8.5 mi. ese. Of Chico. Ca. 400 yds. N. of Butte Creek. 167 Comment
  SEINET10469599  Calochortus monophyllus Mary Susan Taylor 1980-4-18 Taylor 2511 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC34485  Calochortus superbus J. D. Jokerst 1978-5-21 128 Butte Ca 200 met w of Hwy 32 on top of ridge. 365 Comment
  UCD80424  Calochortus superbus CNPS SN Foothill Team 2005-5-4 SNFN 0201 b Butte City of Chico, Upper Bidwell Park, on the west side of Big Chico Creek, ~1 mile from the end of Upper Park Road, and about 110 m upslope of the road. 273 Comment
  UCD14892  Calochortus tolmiei Rachel Aptekar 1991-5-11 16 Butte along Route 70, 21.3 miles north of Oroville. 670 Comment
  CHSC46281  Calycadenia fremontii Vernon H. Oswald 1989-5-10 3762 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  UCR51793  Calycadenia multiglandulosa Lowell Ahart, P. Ahart 1984-6-10 4687 Butte Sierra Nevada Mtns. Foothills, along edge of a new subdivision road 1 mile southeast of Hurleton; 1/12 mile east of Oak Grove Cemetery 500 Comment
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Oct 10 2010
  CAS-BOT-BC270050  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  RSA337395  Calycadenia multiglandulosa subsp. bicolor L. Ahart, Peter Ahart 1984-6-10 4687 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  CAS-BOT-BC106081  Calycadenia oppositifolia John Thomas Howell 1951-6-26 27513 Butte Feather River Canyon, Sierra Nevada 213 Comment
  CAS-BOT-BC106083  Calycadenia oppositifolia John Thomas Howell 1955-6-14 30454 Butte Magalia 731 Comment
  CAS-BOT-BC106084  Calycadenia oppositifolia John Thomas Howell 1955-6-15 30509 Butte West Branch of North Fork of Feather River 182 Comment
  CAS-BOT-BC106090  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 miles N. of Chico on Richardson Springs Road. Comment
  CHSC108165  Calycadenia oppositifolia L. P. Janeway 2011-8-17 10657 Butte Northern High Sierra Nevada. Plumas National Forest; east slope of Bloomer Hill, 850m east-southeast of the top. Small flat at western end of the rock-garden-like opening in Ponderosa pine dominated mixed conifer forest. 721 Comment
  CHSC22939  Calycadenia oppositifolia Robert A. Schlising 1963-6-7 2616 Butte 3.1 mi S of Cohasset along Cohasset Highway. Comment
  CHSC30687  Calycadenia oppositifolia M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2294 Butte Magalia serpentine area rd to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC45540  Calycadenia oppositifolia 1976-5-28 Butte PG and E power line right-of-way on rd to Miller's Pond, ca 0.5 mi W of Hwy 70 at Rockhouse; 0.5 mi S of Jarbo Gap. 655 Comment
  CHSC86568  Calycadenia oppositifolia L. P. Janeway 2003-5-7 7775 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  UC726409  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte e of, near the airport Chico Comment
  CHSC25457  Calycadenia truncata Marc Hayes; Warner 1977-9-12 99 Butte On Butte College Campus, at intersection of Pentz and Clark Rds., ca. 15 SE of Chico. 82 Comment
  UC1953745  Calycadenia truncata R. L. Carr 1986-10-3 2266 Butte NE of Oroville, Olive Hwy (162, Oroville-Quincy Road), 3.6 mi NE of Forbestown Rd, ca. 0.5 mi N of Bidwell Bar Bridge Comment
  CAS-BOT-BC90920  Calycanthus occidentalis Lowell Ahart 1981-7-7 2920 Butte About 0.5 mile west of the Oroville Forbestown Road on the Black Bart Road, west of Forbestown. 700 Comment
  CAS-BOT-BC90925  Calycanthus occidentalis A. A. Heller 1913-6-6 10782 Butte Ditch along Table Mountain 8 miles north of Oroville. 182 Comment
  CAS-BOT-BC90928  Calycanthus occidentalis John Thomas Howell 1967-6-22 42640 Butte Sierra Nevada. 1 mile southwest of Pulga Bridge Canyon of the Feather River North Fork. Comment
  CHSC117663  Calycanthus occidentalis Lowell Ahart 2016-8-27 21317 Butte On the west side of Noth Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut loam, about 12 miles (air) southeast of Oroville. 57 Comment
  UCD166582  Calycanthus occidentalis Dylan O. Burge 2016-8-6 2122 Butte Butte Creek watershed, below Doe Mill Ridge. 220 Comment
  CHSC12006  Calyptridium umbellatum E. B. Copeland 1930-7-12 Butte Above Jonesville. 2000 Comment
  UCD100460  Calyptridium umbellatum T. I. Storer 1961-6-6 s.n. Butte State Highway 32, 23 miles east of Chico. Comment
  CHSC95080  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
  JEPS105268  Calystegia atriplicifolia subsp. buttensis Dean W. Taylor 1995-8-6 15398 Butte near Concow Reservoir (ca. 6 air miles E of Paradise) along Hoffman Road 0.3 miles West of Concow Road; Lassen National Forest 670 Comment
  SEINET10496586  Calystegia occidentalis Mary Susan Taylor 1982-6-24 Taylor 4735 Butte T23N R5E sw/sw sec 29. Pulga SW quad. At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. Mixed Evergreen Forest; 3500 ft. 1069 Comment
  CHSC70521  Calystegia occidentalis subsp. fulcrata R. A. Schlising 1972-5-4 3064 Butte W of Wrightwood in Angeles National Forest; at Grassy Hollow Campground, 2.6 mi W of junction N2 and Angeles Crest Hwy at Big Pines Station. Comment
  CHSC11911  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 Butte Jonesville. 1550 Comment
  POM38436  Camissonia graciliflora C. C. Bruce 1897-05 1957 Butte Near Chico. Comment
  SEINET10462927  Campanula prenanthoides Conger 1907-1 CONGER s.n. Butte BRUSH CREEK Comment
  SEINET10458022  Campsis radicans Mary Susan Taylor 1975-6-30 Taylor 823 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC101274  Capsella bursa-pastoris Lowell Ahart 2009-4-3 15526 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC11084  Capsella bursa-pastoris Lowell Ahart 1965-3-10 Butte Peter Ahart Ranch, Honcut. 36 Comment
  CHSC498  Cardamine californica P. Delaplane 1965-3-2 66 Butte Found ca. 100 yds. from covered bridge on Honey Run Rd. ca. 8 mi. SE of Chico. 304 Comment
  SD8269  Cardamine californica Mrs. R. M. Austin 1883-1 Butte Comment
  CHSC113301  Cardamine oligosperma Lowell Ahart 2014-4-9 19335 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC61208  Cardamine oligosperma Vernon H. Oswald; Lowell Ahart 1993-3-24 5246 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  CHSC99310  Cardamine oligosperma Lowell Ahart 2008-5-21 14786 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SBBG128279  Cardamine oligosperma L. Ahart, J. Dittes 2009-3-20 15505 Butte open area along the Guardian Rock Trail, ca. 150 yards SW of the Ten Mi House Rd Trail, ca. 300 yards W of Hwy 32, W of the intersection of Hwy 32 and Ten Mi House Rd, upper Bidwell Park, ca. 10 mi NE of Chico 407 Comment
  JEPS108575  Cardamine pachystigma L. P. Janeway, S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-4-26 8369 Butte Northern High Sierra Nevada. Plumas National Forest; Ridgetop between Cirby Creek and Flea Valley Creek drainages; along Concow Road 0.9 road km north-northwest of junction with Rim Road (Ponderosa Way) 1042 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte Near the ditch, 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. 50 Comment
  UC1586601  Carduus pycnocephalus subsp. pycnocephalus Vernon H. Oswald and Lowell Ahart 1991-5-13 4587 Butte between Canyon Drive and Oroville Dam Blvd. East (opposite the spillway) Dan Beebe Trail; Lake Oroville Recreation Area 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
  CHSC52277  Carex abrupta L. P. Janeway 1987-7-4 2430 Butte Near seepy area slong road to Jones Meadow 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CHSC77030  Carex abrupta V. Oswald; L. Ahart 1988-7-26 3627 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CAS-BOT-BC17901  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CAS-BOT-BC17903  Carex angustata H. F. Copeland 1920-8-1 166 Butte Jonesville meadow. 1219 Comment
  CAS-BOT-BC17906  Carex angustata L. P. Janeway 1988-6-25 2896 Butte Meadow adjacent to Bull Hill Road 2.6 miles from the Skyway. 1508 Comment
  CHSC36066  Carex angustata J. D. Jokerst; R. A. Schlising 1982-6-4 1590 Butte Concow Creek in an open meadow at its headwaters. 1097 Comment
  CHSC88224  Carex angustata Lowell Ahart 2004-8-2 11327 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain. 1452 Comment
  POM218979  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  SEINET10587462  Carex angustata Lawrence P. Janeway 1987-6-27 Janeway 2358 Butte T24N, R4E, Kimshew Point quad. NW 1/4 of sec. 12. Meadow on east slope of Bald Mtn; along the Concow Rd. Small open meadow, moist, in red fir forest. With C. lemmonii, Lotus oblongifolius var. nevadensis, Helenium bigelovii, etc. 1695 Comment
  SEINET7550019 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Sycamore Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. Oroville Dam quad 7.5' quad. 274 Comment
  OBI69227  Carex barbarae Kari Fisher 2000-11-10 45 Butte Chico State Campus, along Big Chico Crk 79 Comment
  CHSC52271  Carex bolanderi L. P. Janeway 1988-5-29 2676 Butte Canyon of Big Chico Creek; seep along Ponderosa Way 1.2 mi NW of the creek crossing. 426 Comment
  SEINET7552626 Image available Carex bolanderi Robert F. C. Naczi 2004-7-29 10639 Butte ca. 5 mi NE of Pulga, along E side of route 70; 0.3 mi N of Arch Rock Tunnel 460 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
  CHSC52849  Carex brainerdii L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2997 Butte Crane Valley; away from the meadow in disturbed forest. 1569 Comment
  UCR266839  Carex brainerdii Peter F. Zika 2011-7-6 25538 Butte Northern Sierra Nevada Highlands (n SNH), Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles north of dam on Lost Creek Reservoir 1040 Comment
  CHSC44116  Carex cusickii L. P. Janeway 1988-7-29 3119 Butte Mdw at jct of Colby, Willow and Butte Cks and Humboldt Rd. 1485 Comment
  CAS-BOT-BC320482  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls 1219 Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  SEINET8027623 Image available Carex echinata L. Janeway, Gog, L 2008-1 3196 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi W of Cherry Creek Campground. Comment
  CHSC52861  Carex echinata subsp. echinata L. P. Janeway 1987-6-26 2311 Butte 2.5 mi E of Granite Ridge along road to Lynch and Logue Meadows; along Camp Creek. 1365 Comment
  UC1108994  Carex echinata subsp. echinata H. F. Copeland 1932-7-17 Butte vicinity Jonesville; Lassen National Forest 1500 Comment
  UC1748323  Carex feta L. P. Janeway 1995-7-16 4860 Butte along Concow Road 8.2 mi E of West Branch Feather River Breakneck Canyon, E side (0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; 1.5 mi N of Kimshew Creek) 1402 Comment
  UCSB63767  Carex feta Janeway, L. 1995-7-16 Butte Kimshew Point quad., T24N, R4E, SE 1/4 of SW 1/4 of sec. 13; 0.8 mi. northwest of Oak Point; 0.8 mi. east of Transfer Ridge; east side of Breakneck Canyon; 1.5 mi. north of Kimshew Creek; along Concow Road; 8.2 mi. east of West Branch Feather River 1402 Comment
  CAS-BOT-BC21237  Carex fracta Clarence Roy Quick 1963-7-16 63 -43 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC37065  Carex fracta L. Ahart 1982-9-29 3837 Butte On banks of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC43911  Carex fracta L. P. Janeway 1987-6-8 2157 Butte Along French Cr ca 1/2 mi N of Bush Cr and near bridge of the road to Coyote Gap. 640 Comment
  SEINET7559348 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest, along Jones Creek, NE of Jonesville. 1720 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
  CHSC102376  Carex gracilior Lowell Ahart 2009-6-18 15911 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC78177  Carex gracilior Lowell Ahart 2000-5-18 8374 Butte On the bottom of the Clay Pit, near the cottonwood trees, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) sothwest of Oroville. 36 Comment
  SEINET12649429 Image available Carex gracilior Lowell Ahart 2009-1 15911 Butte 59 Comment
  CHSC52867  Carex hirtissima L. P. Janeway 1989-5-13 3239 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  UC826047  Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. Comment
  RSA739650  Carex hoodii L. P. Janeway, Linus Gog 2008-7-19 9442 Butte Butte County: High Cascade Range, N side of Scotts John Creek at crossing of Road 26N27 (The connector betw Humboldt Road and Humbug Summit road). 1740 Comment
  CDA30227  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley.; Oroville: south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum. Comment
  SEINET12649502 Image available Carex inversa Peter F. Zika 2010-1 24827 Butte 65 Comment
  UCD140469  Carex inversa Peter F. Zika 2010-5-16 24825 Butte Safford Street near Third Avenue, Oroville, Janeway's Station, Sacramento Valley. 50 Comment
  CHSC43884  Carex laeviculmis L. P. Janeway 1987-6-26 2295 Butte At Rag Dump. Near Fall Creek. 1173 Comment
  CHSC44931  Carex laeviculmis Lowell Ahart 1988-7-31 6154 Butte Road gutter, north of a small stream, 1 1/2 air miles west and a little south of Bald Mountain, about 3 air miles north-east of Stirling City. 1066 Comment
  CAS-BOT-BC278763  Carex lemmonii Peter F. Zika 2011-7-6 25531 Butte Mooreville Ridge Road, 0.4 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1025 Comment
  JEPS120811  Carex lemmonii Lowell Ahart 2013-5-27 18712 Butte On the E side of Black Bart Road, about 3/4 mile (by road) SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  SEINET12649537 Image available Carex leporinella Lowell Ahart 2010-1 17218 Butte 1918 Comment
  SJSU5739  Carex leptopoda Lewis S. Rose 1963-6-5 63140 Butte N Fork Feather R, Arch Rock Tunnel 487 Comment
  CHSC41352  Carex multicaulis R. A. Schlising; Nancy Prouty 1981-3-14 4000 Butte N of Oroville and N of Jarbo Gap along Hwy 70. Comment
  CHSC42368  Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 1 1/2 miles north-east of Forbestown. 853 Comment
  SEINET10713512  Carex multicaulis Lawrence P. Janeway 1988-6-19 Janeway 2830 Butte T24N, R4E, Stirling City quad. NW1/4 of sec. 16. 2.4 mi N of Stirling City towards Inskip, along dirt logging road 0.1 mi W of Skyway. W-facing roadcut of steep soft dirt. With C. brainerdii. 1173 Comment
  SEINET7568477 Image available Carex multicaulis Lowell Ahart 1987-5-11 5623 Butte North of the Forbestown Ditch along the dirt road, about 2 1/2 miles north-east of Forbestown. 853 Comment
  CHSC89037  Carex nebrascensis L. P. Janeway; B. Castro 2004-8-15 8245 Butte High Cascade Range. At Cold Springs; north side of Humbug Summit Road halfway between Willow Creek and Humbug Summit. 1975 Comment
  CAS-BOT-BC119721  Carex nervina V. Oswald; Lowell Ahart 1988-7-26 3623 Butte Snow Mt. region ca. 6 air mi SE of Jonesville. 2026 Comment
  CAS-BOT-BC119723  Carex nervina L. P. Janeway 1987-7-4 2423 Butte Kimshew Point quad. Seepy area along road to Jones Meadow, 9.6 mi from Inskip. 1935 Comment
  CHSC31673  Carex nudata L. Ahart 1976-4-12 1061 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  JEPS120085  Carex praegracilis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18108 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC118352  Carex praegracilis L. P. Janeway 1987-5-20 2056 Butte Near Gold Flat and Hodap Creek and the jct of Lunt Rd and Nelson Bar Rd. 457 Comment
  CHSC105521  Carex raynoldsii Lowell Ahart 2010-9-28 17264 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC44946  Carex simulata L. P. Janeway 1988-7-29 3125 Butte Mdw near Humbug Summit Rd, 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CHSC99392  Carex specifica Robert F. C. Naczi; Anton 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. 2120 Comment
  CHSC36883  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1658 A Butte Coon Hollow along the edges of forest service road 26N74 ca 1/2 mi W of the West Branch Feather River. N of Philbrook Resv. Comment
  CHSC52883  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro, F. Jay Fuller 1988-7-11 2991 Butte At Crane Valley (upper Big Kimshew Creek); a large montane meadow. 1569 Comment
  SD472  Carex subfusca E. B. Copeland 1929-7-20 Butte Jonesville; in woods by Jones Creek; forming tufts, sometimes large. 1500 Comment
  CHSC46042  Carex texensis L. P. Janeway 1987-4-28 2010 Butte CSU, Chico campus. Semi-wild area on N side of Big Chico Cr opposite Holt Hall. 57 Comment
  SEINET7486553 Image available Carex texensis Peter F. Zika 2010-1 24982 Butte N bank of Big Chico Creek, near Holt Hall, campus of California State University Chico, S of Mansion Avenue, Chico Comment
  CHSC50379  Carex vulpinoidea Vernon Oswald; Lowell Ahart 1990-5-26 4254 Butte Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. 32 Comment
  CHSC99390  Carex whitneyi Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10532 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. Upslope from creek. 1740 Comment
  JEPS117914  Carex whitneyi L. P. Janeway & Linus Gog 2008-7-19 9443 Butte North sid of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). High Cascade Range 1740 Comment
  SEINET12569333 Image available Carex xerophila L. P. Janeway 2006-1 8595 Butte Northern Sierra Foothills: "Magalia Serpentine," east side of Coutolene Road, between that road and the first bend in the road down to Magalis Dam 707 Comment
  UCD168844  Carex xerophila Peter. F. Zika; L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands (n SNH). Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. 720 Comment
  CAS-BOT-BC248934  Castilleja M. S. Taylor 1978-7-19 1776 Butte On e side of Upper Scotts John Rd, ca. 2 mi n of its jct with Scotts John Rd, ca. 6 mi ne of Jonesville 1828 Comment
  CHSC2932  Castilleja affinis W. Fitzwater 1958-4-19 Butte Humbolt Rd. Comment
  CHSC39496  Castilleja applegatei subsp. pinetorum Loweel Ahart 1983-6-21 4072 Butte Along Bloomer Hill Road, about 3/4 mile west of Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 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
  SEINET10865280  Castilleja applegatei var. fragilis Mary Susan Taylor 1978-5-6 Taylor 1583 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC255463  Castilleja applegatei var. pinetorum Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  UC492739  Castilleja arachnoidea H. F. Copeland 1932-8-22 Butte woods above Kirby's Meadow; Jonesville Comment
  CHSC115343  Castilleja attenuata Lowell Ahart 2015-4-11 20029 Butte About 3/4 mile northeast of the Honcut Cemetery, about 4 1/2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 71 Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC31820  Castilleja attenuata L. Ahart 1974-4-11 375 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3752  Castilleja attenuata R. L. Adams 1964-4-12 79 Butte 200 yds. E. Manzanita School on Manzanita Ave. NE Chico. Comment
  JEPS124208  Castilleja attenuata Lowell Ahart 2015-4-11 20029 Butte About 4 1/2 miles (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CHSC47507  Castilleja campestris subsp. campestris Lowell Ahart 1974-4-24 425 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC175548  Castilleja exserta A. A. Heller 1913-4-7 10729 Butte 6 mi n Oroville Comment
  CHSC115321  Castilleja lacera Lowell Ahart 2015-4-18 20048 Butte On the west side of Robinson Mill Road, about 1 1/2 miles southwest of the intersection of Robinson Mills Road and Forbestown Road, about 12 miles (air) southeast of Oroville. 685 Comment
  UC492736  Castilleja miniata H. F. Copeland 1932-7-24 Butte above Butte Creek Meadows (w wall of Butte Creek drainage, near rim); Jonesville, Butte Creek Comment
  CHSC1724  Castilleja pruinosa H. Summers 1929-3-11 Butte Richardson Springs Road. 152 Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  UC1509663  Castilleja tenuis L. Ahart and P. Ahart 1983-6-12 4044 Butte ca 1 mi s Crystal Hill (n of Oregon Gulch, near Lake Oroville, ca 7 mi sw of Feather Falls) Comment
  UC725777  Castilleja tenuis A. A. Heller 1938-7-20 15287 Butte 7 mi e Chaparral (meadow upper end of Snag Lake); Snag Lake 1524 Comment
  CAS-BOT-BC48820  Ceanothus cuneatus Ira L. Wiggins 1925-3-22 1466 Butte Chico Creek canyon about five miles above Chico Comment
  CHSC1501  Ceanothus cuneatus L. Stone 1930-3-9 Butte Near Richardson Springs. 152 Comment
  CHSC40677  Ceanothus cuneatus Ahart; Jokerst 1985-3-24 4865 Butte Found growing on damp bare serpentine west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CHSC51907  Ceanothus cuneatus Mile Pahl 1988-4-19 15 Butte 14.3 mi NE of Chico on Cohasset Hwy and 0.3 mi SSW of Cohasset Hwy. 548 Comment
  SEINET10493627  Ceanothus cuneatus Mary Susan Taylor, D. Hemphill 1981-3-18 Taylor 3431 Butte T23N R4E east center third sec 30 Paradise SE quad; Open serpentine ridge nnw of Sawmill Peak, off Ponderosa Way (Jordan Hill Rd), ca. 1 air mi ne of Magalia; 2300-2400 ft. 701 Comment
  SD2946  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville, in edge of fir and pine woods. 1650 Comment
  UC1070736  Ceanothus integerrimus C. G. Albertus 1933-6-26 35 Butte 2 mi e Paradise; Chico quad. 152 Comment
  CAS-BOT-BC51729  Ceanothus lemmonii A. A. Heller 1913-6-7 10810 Butte Near Stirling 1074 Comment
  CHSC1512  Ceanothus lemmonii 1937-5-1 Butte Forest Ranch. 548 Comment
  CHSC42001  Ceanothus lemmonii Lowell Ahart 1973-4-15 202 Butte Along Swedes Flat Road, north of Bangor. 304 Comment
  CHSC65583  Ceanothus lemmonii L. P. Janeway 1995-6-19 4799 Butte About 0.5 mi east of the western end of Jackson Ranch Ridge. 1097 Comment
  CHSC81298  Ceanothus lemmonii J. Trizzino 2001-4-25 54 Butte Humbug Road, 7 mi north of Steel Bridge, west facing hillside. 944 Comment
  RSA43302  Ceanothus lemmonii W. I. Follett 1948-6-1 s.n. Butte Hwy 24, 6.2 miles N of W Branch Feather River Comment
  CAS-BOT-BC51999  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  POM195581  Ceanothus prostratus E. B. Copeland 1930-3-29 s.n. Butte De Sabla. Comment
  RSA77695  Ceanothus prostratus F. W. Peirson 1926-6-21 6780 Butte Butte Meadow, Humboldt Road Comment
  SEINET194885  Ceanothus prostratus A. A. Heller 1949-4-10 15371 Butte unspecified Comment
  RSA113231  Ceanothus tomentosus E. K. Balls, Lee W. Lenz 1955-5-13 20688 Butte Paradise, on road from Oroville to Magalia 579 Comment
  CHSC11991  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville. 1550 Comment
  CHSC20725  Ceanothus velutinus M. S. Taylor 1975-8-31 898 Butte Scattered on n side of Humboldt Rd, ca. 3 ft w of Butte Creek, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC109671  Celtis occidentalis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west of the parking area, Lower Bidwell Park, Chlico. 71 Comment
  CHSC116948  Centaurea cyanus Matthew Forster 2013-4-3 Butte Hwy 32 off of 10 Mile House Rd. Found along hiking path of 10 Mile House Rd. 457 Comment
  CHSC61294  Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte On the west side of La Porte Road, about 2 miles south-west of Clipper Mills. 1066 Comment
  CHSC102714  Centaurea solstitialis Lowell Ahart 2009-7-3 15984 Butte 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove parking area, Lower Bidwell park, Chico. 67 Comment
  CHSC37382  Centaurea solstitialis R. A. Schlising 1980-8-3 3962 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS115353  Centaurea solstitialis Lowell Ahart 2009-7-3 15984 Butte 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  SEINET10473683  Centaurea solstitialis Mary Susan Taylor Taylor 776 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC74674  Centaurium tenuiflorum B. Castro 1998-6-13 790 B Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 80 ft N of creek channel, directly under transmission lines. 85 Comment
  CHSC22563  Centromadia fitchii Robert A. Schlising 1973-10-14 3118 Butte Bidwell Park, Chico, ca 0.25 mi NE of jct Upper Park Road and Manzanita Avenue. Comment
  JEPS88496  Centromadia parryi subsp. rudis Vernon H. Oswald and Lowell Ahart 1996-7-22 8096 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on edge of public access parking lot on 7 Mile Lane, adjacent to se corner of Tract 2, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  JEPS122187  Cerastium glomeratum Lowell Ahart 2014-4-16 19363 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CAS-BOT-BC388265  Cerastium glomeratum Lowell Ahart 1980-5-17 2285 Butte 1/2 mile south-east of Hurleton 600 Comment
  CHSC20053  Cercis occidentalis M. S. Taylor 1975-4-25 502 Butte Ca. 2 ft w of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  RSA31137  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of the Sierra near Forest Ranch. 610 Comment
  SEINET11911382  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Res., about 2 mi S of Paradise 550 Comment
  CAS-BOT-BC276479  Chaenactis douglasii var. douglasii E. B. Copeland 1931-7-6 693 Butte Jonesville 1900 Comment
  SEINET10483789  Chamaebatia foliolosa Mary Susan Taylor 1976-3-6 Taylor 1010 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
  CDA4787  Chamaesyce maculata L. Ahart 2000-11-4 8717 Butte On the west side of Highway 70, about 50 yards north of Rich Gulch Road, about 1 miles north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. Comment
  CHSC44389  Chamaesyce maculata Lowell Ahart 1988-7-3 6120 Butte Along the edge of the dirt road, about 1/10 mile north of the large steel water standpipe, about 1 1/2 miles east of the Ponderosa Dam. 457 Comment
  RSA518698  Chamaesyce nutans L. Ahart 1990-9-30 6605 Butte On the north side of Canyon Creek, below the high water line of Lake Oroville, about 1/8 miles north of the Canyon Creek Bridge across Lake Oroville. 228 Comment
  CHSC47423  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1974-8-14 603 Butte 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
  SEINET10971573  Cheilanthes californica Lowell Ahart 1983-5-28 Ahart 4023 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  CAS-BOT-BC69450  Cheilanthes gracillima H. W. Hallins 1914-7-1 9806 Butte Jonesville. 1737 Comment
  CHSC42499  Chenopodium album Lowell Ahart 1987-6-9 5726 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
  HSC100729  Chenopodium strictum var. glaucophyllum Lowell Ahart 2009-8-13 16281 Butte NE of Hooker Oak, Upper Bidwell Park, Chico, S end of cement barrier that controls water flow into Mud Creek. 69 Comment
  CHSC33973  Chimaphila menziesii M. S. Taylor 1981-5-13 3704 Butte Jct. of 23N15.5, 22N66X and 22N40X, ca. 2 air mi s of Four Trees Rd, ca. 1 air mile w of Elks Retreat on Oroville-Quincy Hwy. 1280 Comment
  UC474267  Chimaphila umbellata H. F. Copeland 1930-7-26 Butte dry places by Fishermen's Trail Jonesville Comment
  UCD138418  Chlorogalum angustifolium L. Ahart 1977-5-22 1397 Butte Peter Ahart Ranch, Honcut. 15 Comment
  UCD138421  Chlorogalum angustifolium J. A. Jernstedt 1976-5-21 356 Butte Intersection of Palermo Road and Power House Hill Road, ca. 0.5 mile east of Highway 70. 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
  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
  CHSC74115  Chorizanthe stellulata B. Castro; L. P. Janeway 1996-5-19 663 Butte Ca e air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just N of North Rim Trail ca 250 f W of jcn with trail from Diversion Dam. 335 Comment
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  SEINET10454640  Cicuta douglasii Mary Susan Taylor 1978-9-8 Taylor 1899 Butte Around rice fields along Road 50, ca. 4 mi N of Chico. 61 Comment
  SEINET10453140  Circaea alpina subsp. pacifica Lowell Ahart 1983-8-16 Ahart 4293 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC285283  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville 1828 Comment
  SEINET179237 Image available Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville 1650 Comment
  CHSC45659  Cirsium arvense Vernon Oswald 1987-7-29 3164 Butte 0.6 mi w of Coon Hollow Rd. on the dead-end spur road which parallels it on the south, ca. 2 mi (air) ne of Philbrook Reservoir. Roadside. 1783 Comment
  CAS-BOT-BC285522  Cirsium occidentale var. candidissimum A. A. Heller; H. E. Brown 1902-5-8 5502 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC288038  Cirsium occidentale var. venustum Lowell Ahart 1983-6-21 4075 Butte Along Bloomer Hill Road about 3/4 mile west of the Oroville Quincy Highway about 15 miles north-east of Oroville 425 Comment
  CDA1399  Cirsium occidentale var. venustum T. C. Fuller 1959-7-6 2767 Butte Hwy 40 Alt., 7.5 mi. N of Oroville. (Currently under Lake Oroville). Comment
  CAS-BOT-BC288037  Cirsium occidentale var. venustum Lowell Ahart 1980-6-19 2388 Butte Along Swedes Flat Road near Bangor, Sierra Nevada 320 Comment
  CHSC103144  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC30014  Clarkia concinna subsp. concinna L. Ahart 1980-5-25 2341 Butte Near the edge of Ponderosa Way, ca. 2 mi s of the Ponderosa Dam, near Forbestown. 600 Comment
  CHSC56759  Clarkia concinna subsp. concinna L. P. Janeway 1991-6-1 3988 Butte Cut-bank of Dark Canyon Road 3.6 mi south of Big Bend/Parkhill. 280 Comment
  CAS-BOT-BC163266  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-6-30 4176 Butte Along the road, south-east of Concow Res. 500 Comment
  CDA13315  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13161 Butte Sierra Nevada; USFS N60 approx. immed. E of bridge over Marble Creek. Comment
  CHSC44636  Clarkia mildrediae subsp. lutescens Lowell Ahart 1988-6-29 6102 Butte Along Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  CHSC71145  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-12 4437 Butte About 0.5 mi north of Mountain House; along Road 22N49 1.2 mi southwest of Fourmile Ridge Road (Road 22N33). Road cutbank. 853 Comment
  CHSC110764  Clarkia mildrediae subsp. mildrediae Dean Wm. Taylor 2011-8-3 21140 Butte Vicinity Stirling City; along Reston Road decsending into West Branch Feather River Canyon 1.4 miles down (north) from the intersection with the Skyway. 1005 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-BC163638  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-18 8733 Butte Northern Sierra Nevada. 8 7/10 mi. below Magalia on Oroville Road 365 Comment
  CAS-BOT-BC163647  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardson Springs Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC35143  Clarkia purpurea subsp. quadrivulnera George Kingston 1980-4-23 20 Butte N of Chico, at jct. Hwy. 99 and Broyles Road. 60 Comment
  JEPS107749  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 2005-5-28 11820 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CAS-BOT-BC164779  Clarkia rhomboidea John Thomas Howell 1967-6-22 42645 Butte 3 miles northeast of Pulga Bridge, canyon of the Feather River North Fork Comment
  CHSC36811  Clarkia rhomboidea L. Ahart 1982-6-15 3581 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC70750  Clarkia rhomboidea L. P. Janeway 1993-6-23 4399 Butte Along Rd 22N49 about 0.1 mi west of Oroville-Quincy Hwy, 1.0 mi southwest of Junction House. 1005 Comment
  CHSC88090  Clarkia rhomboidea R. D. Fischer 2004-4-17 175 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located mid-way down 10 Mile House Road on cut bank. 365 Comment
  UC765866  Clarkia rhomboidea Robert F. Hoover 1936-5-21 1162 Butte 7 mi n Chico Comment
  RSA448333  Clarkia rhomboidea L. Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  SD122552  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1984-5-28 4651 Butte On a large road cutbank along Highway 40, now called Dark Canyon Rd, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville; Foothill Woodland; 449 Comment
  JEPS119802  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disc Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  RSA699522  Clarkia unguiculata R. D. Fischer 2004-4-28 146 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Highway 32. Located on bluff edge of the Disk Golf Course, just east of the northern most bluff projection (a lookout point) 366 Comment
  CAS-BOT-BC165442  Clarkia unguiculata Lowell Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, Oroville 35 Comment
  CAS-BOT-BC439109  Claytonia exigua subsp. exigua A. A. Heller 1919-3-29 13094 Butte Feather River near Yankee Hill Comment
  SEINET11933195  Claytonia heterophylla Unknown 1983-1 4289 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  CHSC50556  Claytonia lanceolata Vernon Oswald; Lowell Ahart 1990-6-20 4306 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1920 Comment
  CHSC4175  Claytonia parviflora subsp. parviflora Kathy Sommarstrom 1967-10-15 23 Butte Found 20 yds off Humbug Rd in front of covered bridge. 76 Comment
  SEINET11933184  Claytonia perfoliata M. S. Taylor 1981-1 3807 A Butte Vallombrosia St., E of its jct with Espanade, Chico 30 Comment
  CHSC98972  Claytonia rubra subsp. rubra Lowell Ahart 2008-5-12 14758 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  JEPS113206  Claytonia rubra subsp. rubra Lowell Ahart 2007-5-16 13895 Butte On the east edge of Highway 70, about 150 yards north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  JEPS121920  Claytonia rubra subsp. rubra Lowell Ahart 2014-7-10 19633 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CAS-BOT-BC92578  Clematis ligusticifolia Lowell Ahart 1983-7-24 4215 Butte At the Forbestown Reserve, about 5 miles northeast of Forbestown. 450 Comment
  CHSC28506  Clematis ligusticifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2250 Butte By bridge over creek, Jordan Hill Rd (Ponderosa Way on some maps), ca. .8 mi n of its jct with Concow Rd., ca. 5 mi e of Paradise. 426 Comment
  HSC32685  Collinsia sparsiflora var. collina David Johnson 1974-4-20 49 Butte Table Mtn. Comment
  CHSC12750  Collinsia tinctoria M. S. Taylor 1974-5-19 254 Butte Ca. 10 ft s of Upper Bidwell Park Rd, in vicinity of Devils Kitchen, Chico. Comment
  UC129469  Collomia heterophylla Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC180255  Comandra umbellata subsp. californica Mrs. J. H. Morrison 1939-5-1 s.n. Butte Durham Comment
  RSA31755  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia. Comment
  CHSC35963  Convolvulus arvensis M. S. Taylor 1982-5-22 4499 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley. 19 Comment
  CAS-BOT-BC285919  Conyza bonariensis Lowell Ahart 1982-9-9 3771 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  SEINET10474183  Conyza bonariensis Lowell Ahart 1985-1-27 Ahart 4836 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  CAS-BOT-BC286060  Conyza canadensis John Thomas Howell 1961-9-22 36732 Butte Bank of Feather River, Oroville 53 Comment
  JEPS124157  Conyza canadensis Lowell Ahart 2015-11-7 20614 Butte 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. Comment
  CHSC2335  Corallorhiza striata J. Chew 1954-5-30 Butte Road between Rag Dump and Flea Valley. 1097 Comment
  UCD138901  Corallorhiza striata Kenneth D. Stewart 1965-7-15 s.n. Butte along State Highway 32, around 20 miles north of Forest Ranch. Comment
  CAS-BOT-BC211984  Cornus nuttallii Saichi Kawahara 1968-5-5 399 Butte Humboldt Road, 1 mile west of Bull Road 1432 Comment
  CHSC52016  Cornus nuttallii Steven Triano 1988-4-17 58 Butte Ca 50 ft e of Hwy. 32 and 6.54 mi n of Forest Ranch. 984 Comment
  UC1122795  Cornus nuttallii J. E. Sowder 1933-7-6 107 Butte 2 mi. n.e. Cohassett; Chico Quad. Comment
  UCD117250  Cornus nuttallii P. Thompson 1996-4-26 38 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  CAS-BOT-BC209586  Cornus sericea E. B. Copeland 1930-6-25 431 Butte Jonesville 1500 Comment
  CHSC33765  Cornus sericea subsp. sericea R. A. Schlising; R. Banchero, J. Fuller 1981-6-28 4121 Butte E of Stirling City near E border of county. S and E of andesitic Table Mountain in Little Kimshew Creek. 1584 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
  CAS-BOT-BC210520  Cornus sessilis Clarence Quick 1940-7-20 s.n. Butte Big Bar Mt., E. of Feather River at Pulga; from Big Bar Lookout 2-3 miles towards Brush Creek Comment
  RSA32004  Cornus stolonifera A. A. Heller 1938-7-20 15282 Butte Upper end of Snag lake 7 miles east of Chaparral on the Humbug Road. 1524 Comment
  SD1899  Corydalis caseana E. B. Copeland 1929-7-3 Butte Comment
  CHSC58279  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CHSC97413  Cotula australis Robert Fischer 2006-6-18 1032 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  SEINET10482970  Crassula Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5227 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CHSC65448  Crassula connata Vernon Oswald 1989-3-30 3729 Butte Upper Bidwell Park, Chico. Slightly nw of the North Rim Trail along an intermittent streamlet draining into Sycamore Creek. 274 Comment
  SEINET10449718  Crassula muscosa Mary Susan Taylor 1980-4-6 Taylor 2444 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  RSA0118771  Crassula tillaea Lowell A. Ahart 2013-4-20 18559 Butte In corral at the barn, about 0.25 mile north of the Honcut Cemetery, about 3.25 miles (air) northeast of Honcut. 48 Comment
  UCD72993  Crassula tillaea Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  UC485366  Crepis occidentalis H. F. Copeland 1931-6-11 1532 Butte near Butte Creek Meadows; Jonesville 1828 Comment
  JEPS120499  Crepis occidentalis subsp. conjuncta L. P. Janeway 2012-6-7 10862 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. Comment
  CHSC62453  Croton setiger L. P. Janeway 1993-9-7 4584 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC91472  Croton setiger Lowell Ahart 2005-7-13 12153 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC46402  Crucianella angustifolia Lowell Ahart 1989-5-10 6209 Butte About 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 304 Comment
  RSA718311  Crucianella angustifolia L. Ahart 2006-6-9 12645 Butte On the S side of the service road to Bardees Bar along the N Fork of the Feather River. About 1/8 mile E of Hwy 70. About 2.75 miles (air) SW of Pulga. 436 Comment
  CDA6677  Crucianella angustifolia J. T. Howell 1959-9-2 34692 Butte Sierra Nevada; Digger Pine Belt, 7 miles northeast of Oroville on Feather River Highway. 0 Comment
  SD122578  Crucianella angustifolia Lowell Ahart 1984-6-8 4681 Butte edge of dirt road, ar fork of Feather Falls and Lumpkin Ridge Rd., 3 mi NE of Ponderosa Dam, ca. 3 mi N of Forbestown 500 Comment
  CHSC76018  Crypsis schoenoides Lowell Ahart; Vernon H. Oswald 1999-8-13 8148 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
  UC1100332  Crypsis schoenoides Herbert L. Mason 1945-9-19 12729 Butte nw Pennington; Gray Lodge Game Refuge Comment
  CAS-BOT-BC190171  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton Road. Comment
  CHSC37662  Crypsis vaginiflora T. B. Devine 1981-9-3 768 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC38802  Crypsis vaginiflora Vernon Oswald 1983-10-21 1076 Butte Upper Bidwell Park, Chico, on the dirt road between Upper Park Rd. and the Easter Cross. 91 Comment
  SEINET10518390  Crypsis vaginiflora A. Arthur Heller 1919-8-13 Heller s.n. Butte Rice fields between Nelson & Richvale in moist adobe. Comment
  JEPS87166  Cryptantha affinis Lowell Ahart 1992-7-21 6820 Butte about 2 (air) mi ne Philbrook Reservoir (on the s side of Coon Hollow, n.w. of a snow lake); Coon Hollow 1737 Comment
  UC179681  Cryptantha affinis A. A. Heller 1914-6-22 11487 Butte near Butte Meadows; Little Summit Comment
  UC398945  Cryptantha affinis E. B. Copeland 1929-7-29 395 Butte Jonesville 1700 Comment
  CHSC46753  Cryptantha flaccida Lowell Ahart 1984-5-19 4609 Butte On a small hill a little east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC58256  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC29960  Cryptantha intermedia R. A. Schlising; R. Banchero 1980-6-2 3617 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  RSA32911  Cryptantha intermedia A. A. Heller 1938-5-28 15121 Butte 23 miles from Oroville on the Feather River Highway. Comment
  SBBG28777  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte N Fork of Feather River, 3 mi S of Pulga 609 Comment
  CHSC38430  Cucumis melo Vernon Oswald 1983-9-17 1041 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC75436  Cupressus macnabiana G. F. Hrusa; T. D. Wilfred 1997-5-7 13740 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  NY43612  Cupressus macnabiana S. Bianco 1995-11-2 1048 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  SEINET11739356  Cupressus macnabiana M. S. Taylor, Oswald, V. 1984-1 5395 Butte jct of Coutelenc Rd and the Skyway, Magalia, just N of Paradise 372 Comment
  CHSC38432  Cuscuta californica var. breviflora Vernon Oswald 1983-6-5 637 Butte Upper Bidwell Park, Chico, near rimrock of the north rim slightly e of Horseshoe Lake. 152 Comment
  CHSC27087  Cuscuta howelliana Lowell Ahart 1978-9-7 1804 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC94555  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC105506  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 370 Butte Comment
  UC105509  Cycladenia humilis var. humilis Mrs. R. M. Austin 1894-1 376 Butte Comment
  SEINET10479028  Cycloloma atriplicifolium Mary Susan Taylor 1979-10-2 Taylor 2210 A Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  JEPS127199  Cynodon dactylon Lowell Ahart 2016-5-31 20905 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south Oroville. Comment
  POM72532  Cynoglossum grande C. C. Bruce 1897-03 2092 Butte Little Chico Comment
  SEINET10497510  Cynoglossum grande Mary Susan Taylor 1980-5-8 Taylor 2617 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC117438  Cynosurus echinatus Lowell Ahart 2016-5-30 20902 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, aabout 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  JEPS127241  Cynosurus echinatus Lowell Ahart 2016-5-24 20871 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
  JEPS98500  Cyperus bipartitus Lowell Ahart 2000-8-23 8663 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC45156  Cyperus difformis Lowell Ahart 1974-10-20 665 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  RSA739808  Cyperus difformis John Dittes 2003-10-8 849 Butte Butte County; undesignated section of Arroyo Chico Land Grant, Ord Ferry 7.5, Quad, Northern Sacramento Valley, 6 air miles W by SW of Chico, 2.3 air miles S of Hwy 32, E bank of Sacramento River, bidwell sacramento river State Park. 38 Comment
  UCD141012  Cyperus difformis C. A. Janeway 1986-10-25 s.n. Butte city of Chico; Bidwell Park, in Big Chico Creek at Five-Mile Recreation Area. 79 Comment
  CHSC45248  Cyperus eragrostis L. P. Janeway; C. A. Janeway 1986-10-4 1905 Butte Gravel bar along Butte Cr ca 2 1/2 mi east of The Skyway. 45 Comment
  JEPS116031  Cyperus eragrostis Lowell Ahart 2009-6-30 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC1100532  Cyperus eragrostis Herbert L. Mason and Verne Grant 1946-8-15 13050 Butte #833 Irrigation Ditch near caretaker's house Greylodge Game Refuge; Butte Sink, Greylodge Game Refuge Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  CDA42942  Cyperus flavescens L. Ahart 2012-10-2 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  HSC102790  Cyperus flavescens L. Ahart 2012-10-20 18503 Butte Chico, Lower Bidwell Park, west of Cedar Grove, ~100 yds. west of Table 4, on the south side of Big Chico Creek 69 Comment
  CDA42918  Cyperus iria L. Ahart 2012-8-6 18415 Butte On the west side of Richvale South Highway, about 1 1/2 miles south of Richvale. Comment
  CHSC110390  Cyperus niger Lowell Ahart 2012-9-28 18469 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC76301  Cyperus niger Lowell Ahart 1999-9-21 8274 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
  SEINET227301  Cyperus niger Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mile NE of Kunkle Reservoir S of Paradise 600 Comment
  CHSC94594  Cyperus squarrosus Lowell Ahart 2006-9-11 13310 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
  RSA0106563  Cyperus squarrosus Lowell Ahart 2014-9-23 19871 Butte On the northeast part of Horsehoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  POM111856  Cyperus squarrosus C. C. Bruce 1897-06 1882 Butte Little Chico Comment
  POM185071  Cyperus squarrosus E. B. Copeland 1903-7-27 3489 Butte Chico. Comment
  CHSC24881  Cystopteris fragilis T. L. Reynolds 1976-4-23 60 Butte Ca. 100 yds s of Honey Run Road and 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CAS-BOT-BC68049  Cystopteris fragilis Lowell Ahart 1981-3-29 2713 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  SEINET10535619  Cystopteris fragilis Mary Susan Taylor 1980-2-17 Taylor 2365 Butte T20N R6E ne sec 5. Along a creek at an old mine site, in Yellow Pine Forest, ca. 0.5 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  UCSB63846  Cystopteris fragilis Ahart, Lowell 1997-8-1 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC10540  Damasonium californicum Lowell Ahart 1968-4-6 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UC1137166  Danthonia unispicata August L. Hormay 1929-6-22 Butte Butte Meadows; w exposure Comment
  CHSC99651  Darlingtonia californica H. Koeth 2007-5-7 Butte Butte Meadows, Cherry Hill Campground, hillside se ... Field redacted by CHSC, contact the data manager for more information 1326 Comment
  CHSC110036  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. 79 Comment
  CHSC115446  Darmera peltata M. Sutton; K. Schierenbeck 2013-5-5 48 Butte Deer Creek. 657 Comment
  CHSC84373  Darmera peltata Lowell Ahart 2003-8-26 10547 Butte On the bottom of the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 6 miles (air) northeast of Feather Falls. 975 Comment
  CHSC39491  Daucus pusillus Lowell Ahart 1983-6-21 4077 Butte 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-BC8796  Delphinium gracilentum Lowell Ahart 1980-5-4 2200 Butte Near Hurlton Comment
  CAS-BOT-BC8570  Delphinium hansenii John Thomas Howell 1962-6-16 37602 Butte Feather River West Branch, southwest of Nelson Bar 304 Comment
  CAS-BOT-BC8572  Delphinium hansenii Lowell Ahart 1980-5-8 2219 Butte North-east of Honcut 65 Comment
  CAS-BOT-BC9924  Delphinium nudicaule Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CHSC24887  Delphinium nudicaule D. J. Funk 1976-4-11 7 Butte Ca. 15 ft. sw of Little Chico Creek. 365 Comment
  CHSC51109  Delphinium nudicaule Ginger S. Gough 1989-4-8 18 Butte Ca. 9 m ese of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CAS-BOT-BC8068  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada 1676 Comment
  RSA398668  Delphinium nuttallianum M. M. Boney 1897-1 s.n. Butte [No location data on label] Comment
  CAS-BOT-BC121617  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4253 Butte E of Oroville, old road to Bucks Lake Comment
  CHSC56776  Delphinium patens subsp. patens J. D. Jokerst; Lowell Ahart, M. S. Taylor 1980-4-7 567 Butte Edge of Swedes Flat Road, 0.8 mi east of its junction with Oroville-Bangor Hwy, ca 10 mi southeast of Oroville. Comment
  CHSC61214  Delphinium patens subsp. patens Vernon H. Oswald; Lowell Ahart 1993-3-24 5236 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  CHSC67379  Delphinium patens subsp. patens James D. Jokerst; R. A. Schlising 1985-4-8 2224 Butte Above Hwy. 70 2.3 mi SW of Pulga Rd. 609 Comment
  CAS-BOT-BC121618  Delphinium patens subsp. patens Mrs. H. C. Cantelow 1940-5-10 4252 Butte E of Bidwell Bar Bridge Comment
  CHSC31845  Delphinium variegatum L. Ahart 1974-3-18 323 Butte In pasture fields; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40058  Delphinium variegatum H. E. Brown 1897-5-1 160 1/2 Butte Collected near Clear Creek. 53 Comment
  CHSC52817  Delphinium variegatum J. D. Jokerst 1981-5-10 1307 Butte Ca 1/2-3/4 mi S of the Skyway along w side of Hwy 99. 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
  CAS-BOT-BC17019  Delphinium variegatum N. Wynne; M. Peckham; J. Bamesberger 1994-3-30 08 Butte Upper Bidwell Park, in the open grasslands west of Horseshoe lake, on the north side of the paved park road. Comment
  CAS-BOT-BC17021  Delphinium variegatum Mrs. J. H. Morrison 1932-4-19 s.n. Butte Durham Comment
  CHSC4081  Delphinium variegatum subsp. variegatum J. E. Bowlin 1967-4-14 19 Butte Near the railroad tracks, ca 30 ft. from the Skyway and ca. 1.8 mi e of the corner of Skyway and Humbug Rd., Chico. 60 Comment
  CAS-BOT-BC16980  Delphinium variegatum subsp. variegatum A. A. Heller 1914-3-18 11205 Butte Low hills 8 miles north of Oroville below the Quercus Douglasii belt. Comment
  CHSC45340  Dendromecon rigida Vernon Oswald 1984-4-16 1158 Butte Near the jct. of the Skyway and Coutolenc Rd. just n of Magalia. 716 Comment
  SEINET7073608  Dendromecon rigida A. G. Vestal 1955-5-20 s.n. Butte About 5.6 miles south of Magalia on the Pentz Road [Pentz - Magalia Highway]. UTM Zone 10, 6223320mE, 4398975mN. Coordinate datum: NAD27. Comment
  POM97723  Dendromecon rigida C. C. Bruce 1898-05 2417 Butte Doe mill Comment
  LA206367  Deschampsia cespitosa H. S. Yates; 1931-7-15 605 Butte Jonesville 1750.0 Comment
  UCD62777  Deschampsia danthonioides var. gracilis A. A. Heller 1974-4-17 11301 Butte 8 miles north of Oroville. Comment
  CHSC39497  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC94017  Deschampsia elongata R. Fischer 2005-9-5 663 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  JEPS116079  Deschampsia elongata Lowell Ahart 2009-5-23 15737 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC39955  Dianthus armeria L. Ahart; P. Ahart 1983-6-30 4173 Butte Dark Canyon, along old Hwy 40, ca. 4 mi s of Jarbo Gap, ne of Oroville. Near the water fountain. 350 Comment
  CHSC2518  Dicentra formosa W. Fitzwater 1958-4-26 Butte Below Forest Ranch, ca. 15 mi. NE of Chico. Comment
  CHSC44641  Dicentra formosa Sally A. Carter 1988-4-24 Butte S. side of Rock Creek, ca. 1 mi e of Upper Vilas Rd., Cohasset, 17 mi ene Chico. 807 Comment
  CHSC635  Dicentra formosa R. Staley 1952-7-21 Butte 304 Comment
  CHSC19658  Dicentra spectabilis K. R. Stern 1965-7-23 2195 Butte Chico. Comment
  SEINET10934920  Dichanthelium lanuginosum Mary Susan Taylor 1979-6-12 Taylor 2295 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CAS-BOT-BC500063  Dichelostemma capitatum M. S. Taylor 1982-5-2 4396 Butte S side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CAS-BOT-BC483252  Dichelostemma capitatum subsp. pauciflorum Lowell Ahart 1970-2-25 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC23469  Dichelostemma multiflorum J. R. Lee 1974-4-22 3 Butte 25 yds n of Skyway and 6 mi e of Chico city limits. 152 Comment
  CAS-BOT-BC501083  Dichelostemma multiflorum Lewis S. Rose 1945-5-12 45045 Butte Richardson Springs 304 Comment
  SEINET12044750  Dichelostemma multiflorum L. S. Rose 1937-1 37353 Butte Hurleton 579 Comment
  SEINET12053816  Dichelostemma multiflorum I. Klockenbaum 5 s.n. Butte no further locality Comment
  CHSC3170  Dichelostemma volubile Robert D. Briggs 1966-4-23 R- 162 Butte 3 miles northeast of chico on hwy. 32. Comment
  CHSC44434  Dichelostemma volubile Lowell Ahart 1988-5-30 6017 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  SEINET10533886  Dichelostemma volubile A. Arthur Heller 1915-4-20 Heller 11848 Butte Thickets in the digger pine and oak belt, 2 miles below Centerville in the Sierra foothills, associated with Ceanothus, Aesculus and Toxicodendron in the blue oak-digger pine belt, where it is rather common. Comment
  CDA39972  Dichondra micrantha William Hansell 1963-6-7 s.n. Butte 1 mile east of Quincy Road and 1 mile south of the Middle Fork of the Feather River on the west side of Bidwell Mountain; Hansell property, Route 4, box 4660. 0 Comment
  CHSC31632  Digitaria sanguinalis L. Ahart 1977-7-19 1481 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC40902  Digitaria sanguinalis Lowell Ahart 1985-11-7 5236 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  JEPS119747  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. Comment
  CHSC48994  Diplacus angustatus Vernon Oswald 1986-5-6 1996 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
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  CHSC28641  Diplacus douglasii M. S. Taylor 1979-3-31 1973 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, se corner, ca. 22 mi n of Oroville. 198 Comment
  CHSC31822  Diplacus douglasii L. Ahart 1973-3-14 171 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET8340789  Diplacus grandiflorus Lowell Ahart 2006-5-10 12617 Butte Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, abotu 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CAS-BOT-BC153216  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte About the Clear Creek-Paradise grade Comment
  CHSC47501  Diplacus kelloggii Lowell Ahart 1974-4-15 417 Butte On the north side of Swedes Flat Road, about 1/4 mile east of the bridge across Rocky Honcut Creek, north of Bangor. 487 Comment
  CAS-BOT-BC153221  Diplacus kelloggii Jean L. Pawek 1956-5-21 53 Butte Alt. 40, Feather River 609 Comment
  CAS-BOT-BC153335  Diplacus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills 487 Comment
  CAS-BOT-BC217026  Diplacus layneae Javier Penalosa 1962-6-18 2474 Butte Near confluence of French and Peavine Creeks. 609 Comment
  CHSC28699  Diplacus torreyi M. S. Taylor 1978-7-21 1813 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC44804  Diplacus torreyi R. Banchero 1980-6-2 178 Butte Along Hwy 32 ca 5.9 mi N of the town of Forest Ranch, 6.1 mi S of its jct with Humbolt Rd. 999 Comment
  CHSC47068  Disporum hookeri R. A. Schlising; Kirsten Tarp 1982-7-28 4351 Butte E of Feather River Canyon and Pulga, on Four Trees Road. 731 Comment
  CHSC78360  Distichlis spicata Lowell Ahart 2000-6-21 8502 Butte On the margins of a seep, about 50 yards west of the dirt road at Parking Area L, west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC27188  Distylium P. Moyer 1971-10-1 16 Butte CSUC campus. Bidwell mansion front lawn. 60 Comment
  CDA35059  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley; Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. Comment
  CHSC67288  Dodecatheon clevelandii subsp. patulum James D. Jokerst 1984-3-20 1952 Butte Peter Ahart Ranch just W of the North Fork Honcut Creek. Comment
  SEINET10449637  Dodecatheon clevelandii subsp. patulum Mary Susan Taylor 1975-3-3 Taylor 392 Butte In field opposite Chico Municipal Airport, along Cohasset Rd, ca. 3 mi N of Chico. Associates: Layia fremontii, Lepidium nitidum, Brodiaea pulchella, Chlorogalum pomeridianum. 61 Comment
  CHSC44343  Dodecatheon hendersonii Lowell Ahart 1988-3-28 5951 Butte Near a small shrub and a small stream, about 1/10 mile south of Lumpkin Ridge road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  POM253216  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-3 15011 Butte Common in moist red clay soil derived from disintefrated lave, Table Mountain, near Cherokee. Comment
  POM253217  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-23 15045 Butte 1.5 mi. from Oroville on the Feather River Highway. Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  SEINET7072737  Downingia bacigalupii A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  UC1594616  Downingia bacigalupii Lowell Ahart 1992-7-21 6795 Butte about 2 air mi ne Philbrook Reservoir (on the s side of Coon Hollow); Coon Hollow 1737 Comment
  SD122580  Downingia bella Lowell Ahart 1984-5-7 4587 Butte Peter Ahart Ranch, ca. 1.5 mile north and 0.5 mile east of Honcut., 12 miles south of Oroville. 49 Comment
  CHSC112927  Downingia cuspidata B. Castro; Tom Boullion 2011-4-21 1846 Butte Sacramento Valley. N side of Thermalito Forebay/Power calanl, ca 0.3 mi W of Hwy 70 and ca 0.2 mi S of Garden Drive, at S end of picnic/boat ramp recreation area, on northside of Oroville. 71 Comment
  UC725639  Downingia cuspidata A. A. Heller 1942-4-26 16436 Butte s of Oregon City road (summit of Table Mountain, a short distance s of the place where the road emerges from the timbered part); Table Mountain Comment
  UC2048627  Downingia insignis Lisa Schultheis 1995-6-9 212 -95 Butte North of Sutter Buttes. Gray Lodge Wildlife Refuge, west side of Pennington Road, 0.3 mile north of Sutter/Butte County Line. Comment
  RSA31686  Draperia systyla A. A. Heller 1938-5-28 15128 Butte Feather River Highway near Pulga. 726 Comment
  CAS-BOT-BC401552  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  SEINET10448020  Drosera rotundifolia Mary Susan Taylor 1978-6-24 Taylor 1669 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  JEPS115701  Drymocallis glandulosa var. reflexa Lowell Ahart 2009-5-23 15739 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  CHSC93796  Dryopteris arguta Lowell Ahart 2006-5-19 12634 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  RSA713017  Dryopteris arguta L. Ahart 2005-11-12 12481 Butte 90 yards northeast of large parking area by the gate. end of Dark Canyon Road, about 3 miles south of Highway 70 at big Bend Road. 327 Comment
  SEINET10530138  Dryopteris arguta Mary Susan Taylor 1981-5-7 Taylor 3638 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC35993  Dudleya cymosa J. D. Jokerst 1982-5-1 1557 Butte At Phantom Falls, S branch of Coal Cr. Canyon. North Table Mountain. 388 Comment
  CHSC25451  Dysphania ambrosioides Hayes; Warner 1977-9-12 98 Butte Growing in flowerbed beside the Agriculture rainshed near the Clear Creek. On the Butte College Campus at the intersection of Clark and Pentz Roads, approx. 15 mi sse of Chico. 85 Comment
  CHSC79989  Dysphania botrys L. P. Janeway; B. Castro 1999-6-4 6450 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge over the Sacramento River. 30 Comment
  UCD98828  Dysphania pumilio J. A. Ream 1931-7-21 2240 Butte Paradise. Comment
  CAS-BOT-BC197095  Echinochloa crus-galli Lowell Ahart 1977-7-19 s.n. Butte Peter Ahart Ranch. Honcut Comment
  CAS-BOT-BC197099  Echinochloa crus-galli John Thomas Howell 1973-7-9 49686 Butte West Branch of Feather River on Feather River highway 304 Comment
  SEINET239850 Image available Echinochloa crus-galli E. Dean, J. Ditomaso; E. Healy 2001-8-20 855 Butte Biggs UC Field Station 30 Comment
  SEINET10564065  Echinochloa crus-galli Mary Susan Taylor 1978-9-8 Taylor 1886 Butte Along flood control slough, 4 mi N of Chico along Hwy 99. 61 Comment
  CDA14356  Echinochloa oryzicola B. Voorhees 1997-8-21 s.n. Butte Davit Dayton Ranch, south of Chico. 0 Comment
  CAS-BOT-BC208573  Echinochloa oryzoides Lowell Ahart 1984-9-17 4792 c Butte In a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC208574  Echinochloa oryzoides Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC66452  Echinodorus berteroi Vernon H. Oswald; Lowell Ahart 1996-6-10 7763 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Vernally flooded slough near the center of the E side of Tract 5 (W side of dike at the SW corner of Tract 6), Sanctuary I. 30 Comment
  CHSC113454  Elatine ambigua Lowell Ahart 2014-8-8 19696 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC78979  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station; field on south side of Hwy 162 between the railroad and Riceton Rd. 30 Comment
  CHSC46263  Elatine californica Vernon Oswald 1989-5-17 3776 Butte Wurlitzer Unit, Vina Plains Preserve. 56 Comment
  JEPS87389  Elatine chilensis Lowell Ahart 1993-5-17 6954 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CAS-BOT-BC113637  Eleocharis acicularis Herbert L. Mason; Verne Grant 1945-7-19 12635 Butte Marshes along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge. Comment
  CHSC55610  Eleocharis acicularis L. P. Janeway; C. A. Janeway 1986-8-31 1818 Butte Along Philbrook Reservoir near Picnic Area. Along east end of the lake. 1691 Comment
  CHSC59012  Eleocharis acicularis Lowell Ahart 1992-8-2 6906 Butte Bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  JEPS117614  Eleocharis acicularis var. acicularis Lowell Ahart 2010-6-9 16776 Butte 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 384 Comment
  CAS-BOT-BC113638  Eleocharis acicularis var. occidentalis Lowell Ahart 1980-6-15 2381 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78562  Eleocharis atropurpurea Lowell Ahart 2000-9-4 8683 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UCD49581  Eleocharis atropurpurea J. M. Tucker 1953-8-28 2681 Butte In rice plots; Biggs Rice Experiment Station, Butte County, California. Comment
  CHSC55612  Eleocharis bella L. P. Janeway 1987-6-19 2251 Butte Meadow on Pinkard Creek, between Lewis Ridge and Mooreville Ridge; 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  CHSC68425  Eleocharis bolanderi L. P. Janeway 1988-7-2 2974 Butte South slope of Big Bar Mountain, along road 5.5 mi southwest of Coyote Gap. 1188 Comment
  CHSC68442  Eleocharis bolanderi L. P. Janeway 1987-6-13 2217 Butte Meadow just northeast of junction of Concow Road and the road to Flea Mountain. 1188 Comment
  CHSC79601  Eleocharis bolanderi G. F. Hrusa; T. D. Wilfred 1997-5-1 13710 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 815 Comment
  JEPS104924  Eleocharis decumbens Dean W. Taylor 1995-8-6 15395 Butte 5 air mi NE of Stirling City, meadow 0.5 mi E of Bald Mountain summit 1706 Comment
  CHSC38905  Eleocharis engelmannii Vernon Oswald 1983-6-27 775 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  UC1100600  Eleocharis engelmannii Malcolm A. Nobs, S. Galen Smith 1949-7-29 1084 Butte 5 mi W of Richvale (rice field) Comment
  CAS-BOT-BC113369  Eleocharis engelmannii M. S. Taylor 1978-7-22 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, in rice field. 30 Comment
  UCD49589  Eleocharis engelmannii E. Dean; J. DiTomaso and E. Healy 2001-8-20 863 Butte Biggs UC Field Station. North of town 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 of buildings. Along east-west running dirt road. 30 Comment
  CHSC31942  Eleocharis macrostachya J. D. Jokerst; M. S. Taylor, R. Schlising 1979-5-18 718 Butte Top of Cohasset Ridge on slopes facing Mud Cr. 243 Comment
  CHSC39338  Eleocharis macrostachya Lowell Ahart 1983-6-26 4144 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road insteaad of Ponderosa Way. 550 Comment
  CHSC45229  Eleocharis macrostachya J. D. Prouty 1980-4-7 Butte Roadside ditch at jct Palermo-Honcut Hwy and Cox Lane; ca 9 mi S of Oroville. Comment
  CHSC68440  Eleocharis macrostachya L. P. Janeway 1996-5-27 4983 Butte South side of Lunt Road, 300 ft east of Nelson Bar Road. Between Lunt Road and a branch of Hodapp Creek. 457 Comment
  UCSB63783  Eleocharis macrostachya Ahart, Lowell 1998-7-18 Butte T20N, R4E, southeast 1/4 Section 8; along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 408 Comment
  SEINET10466896  Eleocharis palustris Mary Susan Taylor 1982-4-28 Taylor 4368 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC31940  Eleocharis parishii J. D. Jokerst; R. A. Schlising, M. S. Taylor 1980-5-18 719 Butte Top of Cohasset Ridge, S facing slope above Mud Cr. 243 Comment
  POM144780  Eleocharis parishii E. B. Copeland 1903-5-30 3280 Butte Chico. Comment
  CHSC78312  Eleocharis quinqueflora Lowell Ahart 2000-7-7 8559 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS98377  Eleocharis radicans Lowell Ahart 2000-10-2 8700 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  CHSC88243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  SEINET10507701  Elymus glaucus Mary Susan Taylor 1977-6-25 Taylor 1364 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC203420  Elymus glaucus subsp. glaucus Lowell Ahart 1987-7-8 5808 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CHSC44919  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-28 6136 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC43258  Epilobium M. Banchero; R. Schlising 1979-9-2 29 Butte Margin of large meadow sloping to Butte Creek, 8.1 mi NE jct Hwy 32, on Humboldt Road. Comment
  SEINET10453189  Epilobium adenocaulon var. occidentale Mary Susan Taylor 1978-7-19 Taylor 1745 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SEINET10453053  Epilobium canum subsp. latifolium Mary Susan Taylor 1982-8-16 Taylor 5017 Butte T24N R5E nw/nw sec 17. Pulga NW quad. S side of jct of Big Kimshew Creek and Bald Mt-Ramsey Bar Rd (52513), ca. 4 air mi ne of Stirling City. Riparian; 4700 ft. 1432 Comment
  CHSC21072  Epilobium ciliatum subsp. ciliatum M. S. Taylor 1975-10-4 954 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC37095  Epilobium ciliatum subsp. ciliatum L. Ahart 1982-9-13 3813 Butte Near and along Pinkard Creek, ca. 1/8 mi n of Lost Creek Reeservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  JEPS120645  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-13 19246 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  UC600555  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  CHSC102993  Epilobium densiflorum Lowell Ahart 2009-6-30 15962 Butte West of Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC110413  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 A Butte south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  CHSC28804  Epilobium densiflorum J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 406 Butte In bottom of vernal pools. Top of Table Mt, 300 m NW. of the intersection of Cherokee Rd and east edge of section. Comment
  CHSC58927  Epilobium densiflorum Lowell Ahart 1992-7-29 6890 Butte In a depression, on slopes, about 1 miles north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC65170  Epilobium densiflorum Lowell Ahart 1995-8-19 7609 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC84157  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the north side of Ponderosa Way, about 1 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 404 Comment
  RSA700273  Epilobium densiflorum L. Ahart 2004-7-20 11287 Butte North side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 30 Comment
  CAS-BOT-BC165939  Epilobium densiflorum L. P. Janeway 1995-7-15 4855 Butte Watson Ridge, about 1.5 mi east of its western end; Along dirt road 21N25A 1079 Comment
  CHSC109228  Epilobium minutum Robert Fischer 2012-6-17 1060 Butte Cascade Range 45 minutes east of Chico off the north side of Humboldt Road between Lomo and Butte Meadows. 1380 Comment
  CHSC61642  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte On the north side of the ridge, about 1/2 mile easta of Snow Mountain. 2103 Comment
  SEINET6644443 Image available Epilobium obcordatum E. B. Copeland 1931-1 664 Butte Jonesville; "the Summit" 2000 Comment
  SEINET10453021  Epilobium obcordatum Mary Susan Taylor 1979-7-21 Taylor 2149 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CHSC35106  Epilobium pallidum R. A. Schlising 1980-6-1 3613 Butte S of Paradise off Pentz Hwy, at Kunkle Reservoir. 440 Comment
  RSA0045628  Epilobium torreyi Lowell A. Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 122 Comment
  UCD18875  Epilobium torreyi Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 183 Butte Off of Hwy 99, 2 mi. north of its intersection with Hwy 149, Book Family Farm, Book Ranch Site, pool # BOO072, UTMs: 10S0611198; 4386920. Comment
  CHSC66067  Equisetum arvense Vernon H. Oswald 1996-5-22 7618 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  CHSC116290  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte On west side of Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC113940  Eragrostis cilianensis Lowell Ahart 2014-7-18 19693 Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  JEPS95948  Eragrostis hypnoides Lowell Ahart 1999-8-13 8151 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC83171  Eragrostis pilosa var. pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Meadow along road. Comment
  UCD65670  Eragrostis pilosa var. pilosa Beecher Crampton 1957-9-17 4620 Butte 5 miles northwest of Biggs, Biggs Rice Exper. Station. Comment
  CAS-BOT-BC291275  Ericameria bloomeri H. F. Copeland 1920-8-25 206 Butte Jonesville 1219 Comment
  CAS-BOT-BC291279  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  UC1609016  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte ridge top about 1 mi e Snow Mountain 2103 Comment
  JEPS19841  Ericameria parryi var. latior Rimo Bacigalupi with Howard Whisler 1957-7-26 6039 Butte 2.2 mi sw of Nimshew (at e canyonside of Butte Creek, along road berm on the Humbug Road); Butte Creek 579 Comment
  CHSC48144  Erigeron annuus Vernon Oswald 1987-5-26 2928 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). 48 Comment
  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
  UC1594581  Erigeron foliosus var. hartwegii Lowell Ahart 1992-5-9 6756 Butte along gulch about 1.25 mi w Oroville Dam; Lake Oroville Recreation Area, Oregon Gulch 91 Comment
  UC725636  Erigeron foliosus var. hartwegii A. A. Heller 1942-6-5 16499 Butte about half way between the junction of the Middle Fork and the West Branch (on the Feather River Highway) Comment
  CAS-BOT-BC300687  Erigeron glacialis var. glacialis Vernon Oswald; Lowell Ahart 1987-7-1 3071 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville 1935 Comment
  CAS-BOT-BC300688  Erigeron glacialis var. glacialis E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 1800 Comment
  CHSC92963  Erigeron inornatus var. inornatus L. P. Janeway 2005-9-4 8531 Butte Northern High Sierra Nevada. Ridge between Cedar Creek and un-named creek to the west; west-facing slope above the un-named drainage; 2.2 km northwest of Arch Rock on North Fork Feather River. 1244 Comment
  JEPS117381  Erigeron lassenianus var. lassenianus L. Ahart 2010-9-21 17227 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC38345  Erigeron philadelphicus Vernon Oswald 1983-5-1 404 Butte Upper Bidwell Park, Chico, where Yahi Trail borders Chico Creek ca. 800 ft w of the e end of Upper Park Rd. 198 Comment
  POM33314  Erigeron philadelphicus C. C. Bruce 1897-04 2076 Butte Pintz [not confident in locality]. Comment
  CHSC33715  Erigeron strigosus J. D. Jokerst 1981-6-13 1337 Butte 1.6 mi below the Road to Big Bald Rock on the road to Milsap Bar on the Middle Fork of the Feather River. Comment
  RSA703154  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. 58 Comment
  CAS-BOT-BC216045  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC216049  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC3202  Eriodictyon californicum Gerry Carrauthers 1966-4-23 126 Butte 9 mi. from city of Chico (east) on Highway 32. Near roadside. Comment
  CHSC680  Eriodictyon californicum M. Roberson 1956-5-14 Butte SW of Paradise along Skyway 426 Comment
  UC1594552  Eriodictyon californicum Lowell Ahart 1992-5-9 6764 Butte About 2 air mi north of Oroville (on north side of dirt road on north side of Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UCD119303  Eriodictyon lobbii Evans Bros. 1933-7-25 s.n. Butte Durham. Comment
  SEINET5330462  Eriogonum luteolum J. T. Howell 1959-9-20 34615 Butte along Feather River near Oroville 46 Comment
  SEINET5333742  Eriogonum luteolum R. R. Halse 2006-8-2 6983 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC23446  Eriogonum luteolum var. luteolum K. R. Stern 1974-6-30 5769 Butte Serpentine outcrop, Coutelenc Road, 0.2 mi n of intersection with Skyway and ca. 1 mi n of Magalia. Comment
  UC1594721  Eriogonum marifolium Lowell Ahart 1992-7-29 6892 Butte about 1 mi e, about 1/2 mi nw of Lotts Lake Carr mine 1828 Comment
  RSA4637  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. 1500 Comment
  UC176184  Eriogonum nudum var. pubiflorum A. A. Heller 1913-9-16 11141 Butte hills near Big Chico Creek (e of Chico) Comment
  SEINET8339333  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC267909  Eriogonum umbellatum V. Oswald; L. Ahart 1988-7-29 3645 Butte Ca. 5 mi. (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  RSA0049736  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2013-7-31 21389 Butte Jordon Hill Road, ca. 1 air mile directly east and across the West Branch Feather River canyon from Magalia 701 Comment
  SEINET11924843  Eriogonum umbellatum var. speciosum Unknown 1981-1 2929 Butte along the edge of dirt road 1/2 mi W of the Forbestown Reservoir, NE of Forbestown 701 Comment
  CHSC33642  Eriogonum vimineum M. Merryman; D. Ikeda 1979-9-2 23 Butte Ca. 6 mi ne of Forest Ranch on Hwy 32. 950 Comment
  CHSC51369  Eriogonum wrightii var. trachygonum Vernon Oswald 1990-10-13 4464 Butte Path on the south side of the Feather River between the fish hatchery and Bedrock Park, Oroville. 42 Comment
  CHSC42688  Eriophorum gracile Vernon Oswald 1987-9-1 3230 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. Marshy seep near the edge of the 'swimming hole' at the Boy Scout Camp. 1280 Comment
  CHSC11838  Eriophyllum lanatum E. B. Copeland 1930-7-11 492 Butte Jonesville. 1550 Comment
  CAS-BOT-BC308160  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1955-6-14 30465 Butte Magalia, Sierra Nevada 731 Comment
  UC1118267  Eriophyllum lanatum var. grandiflorum P. L. Johannsen 1936-4-16 927 Butte Bolt Creek Lassen National Forest, Paynes Creek Quadrangle, Bolt Creek 1432 Comment
  UCD132222  Eriophyllum lanatum var. grandiflorum Collector Unknown 1925-5-17 1621 Butte Marysville Buttes. Comment
  CHSC29992  Erodium brachycarpum L. Ahart 1980-4-7 Butte Along Swedes Flat Road, near Bangor, on damp granitic soil near the bridge across Rocky Honcut Creek. 320 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
  CHSC7118  Erodium moschatum J. Borgstrom 1969-4-23 8 Butte Abundant ca. 4 mi sw of Chico on Dayton Rd, 4 ft. on s side of road. 60 Comment
  UCD103256  Erodium moschatum A. A. Heller 1914-4-21 11313 Butte Chico. Comment
  SEINET10903101  Erodium obtusiplicatum Mary Susan Taylor 1973-1 Taylor 53 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC14197  Eryngium castrense F. T. Griggs 1973-3-20 Butte 10 miles s of Chico, 0.4 miles s of the inersection of Pentz Road and Hwy 99E. Comment
  CHSC44826  Erythranthe bicolor R. Banchero 1980-4-26 140 Butte Along the Cohasset Hwy 4.4 mi NE of its jct with Keefer Rd, ca 1.8 mi SW of the town of Cohasset. 451 Comment
  CHSC105811  Erythranthe breweri Lowell Ahart 2010-9-21 17207 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CAS-BOT-BC151492  Erythranthe filicifolia R. Banchero 1980-6-14 220 Butte Big Bald Rock, Ca 2.5 mi e of the jct of Zink Rd and Bald Rock Rd. 975 Comment
  CHSC94564  Erythranthe filicifolia Lowell Ahart 2006-9-11 13293 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC69724  Erythranthe floribunda Lowell Ahart 1997-10-24 7943 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CHSC93344  Erythranthe geniculata Lowell Ahart 2006-5-3 12563 Butte Face of basalt cliffs on the south side of the stream, about 100 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  CHSC44784  Erythranthe glaucescens R. Banchero 1980-3-16 67 Butte Along Neal Rd 5.4 mi NE of its jct with Hwy 99, Ca 2.8 mi SW of the town of Paradise. 274 Comment
  CHSC51924  Erythranthe glaucescens S. B. Collom 1988-4-25 11 Butte Chico: 100 yds E from 5th Ave bridge in Lindo Channel, on N side. Comment
  CHSC78102  Erythranthe glaucescens Caleb E. Casey 1999-4-6 Butte Bear Hole, Upper Bidwell Park. Found near Chico creek along old diversion canal. 121 Comment
  SEINET8205909  Erythranthe glaucescens Lowell Ahart 2006-5-10 12614 Butte north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bride across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC104814  Erythranthe guttata Lowell Ahart 2010-6-9 16775 Butte On damp to wet soil, bottom of a vernal pool, 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC110638  Erythranthe guttata Christopher T. Ivey; Jenn Coughlan 2013-5-17 381 Butte Centerville Rd. about 2 km NE of Honey Run bridge. W side of road. 115 Comment
  CHSC44669  Erythranthe guttata R. Banchero 1980-6-6 202 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  CHSC44738  Erythranthe guttata R. Banchero 1980-6-17 248 Butte Along Coutolenc Rd 1.7 mi S from its upper jct with the Skyway, 4.8 mi N of its lower jct with the Skyway. 853 Comment
  SD7082  Erythranthe guttata Daniel Cleveland 1882-7-14 Butte Sutton House Comment
  CHSC44818  Erythranthe nasuta R. Banchero 1980-4-26 131 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  CHSC64223  Erythranthe primuloides S. C. Morey 1983-7-28 631 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  SEINET10899973  Erythronium purpurascens Austin AUSTIN s.n. Butte Butte or Plumas County Comment
  CHSC52096  Eschscholzia caespitosa Andrew D. Lane 1984-4-22 9 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  UCSB63621  Eschscholzia caespitosa Holloway, Steve 1986-4-1 Butte North Table Mountain, 150m W of Cherokee Rd., 11.1 km N of the Feather River (Oroville 7.5 minute series Quadrangle. NW1/4, Sec. 17, T20N, R4E 396 Comment
  CAS-BOT-BC402971  Eschscholzia californica H. E. Brown 1897-4-15 166 Butte Near Clear Creek Comment
  UC175321  Eschscholzia californica A. A. Heller 1912-5-23 10747 Butte n Oroville; Table Mountain Olive Ranch Comment
  CAS-BOT-BC402974  Eschscholzia californica Alice Eastwood 1913-6-18 s.n. Butte Chico Comment
  CHSC55722  Eschscholzia lobbii Dan Morgan 1991-4-21 18 Butte Indian Springs Rd., 0.3 mi w of Neal Rd., Paradise. 243 Comment
  RSA32930  Eschscholzia lobbii A. A. Heller 1938-4-14 15027 Butte Summit of Table Mtn. 305 Comment
  CAS-BOT-BC419505  Eschscholzia lobbii A. A. Heller 1914-3-7 11188 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC419509  Eschscholzia lobbii Lowell Ahart 1979-5-12 s.n. Butte Near N. Honcut Creek. Peter Ahart Ranch. Honcut 50 Comment
  SEINET12092006  Eschscholzia lobbii Unknown 1979-1 17 Butte Small population ca 5 mi SE of the town of Cherokee on Cherokee Road on Table Mtn., 23 mi SE Comment
  CHSC44278  Euonymus occidentalis var. occidentalis V. Oswald; W. Dempsey, D. Perske 1988-6-15 3386 Butte Douglas Perske's property located at the e end of Bull Creek Rd., ca. 1 mi (air) ne of Cohasset School. Near the bottom of a canyon slope along the W. Branch of Mud Creek. 853 Comment
  SEINET10906849  Euphorbia maculata Lowell Ahart 1984-8-19 Ahart 4786 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  UCD142602  Euphorbia maculata John Thomas Howell 1959-9-20 34671 Butte Eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC202425  Euphorbia ocellata A. A. Heller 1916-9-5 12645 Butte Hills 8 miles north of Oroville Comment
  CHSC50815  Eurybia integrifolia Vernon Oswald; Lowell Ahart 1990-7-19 4363 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.2 mi west of the Plumas County line. 1981 Comment
  SEINET8687814 Image available Eurybia radulina K. Conger 1907-1 151 Butte Brush creek Comment
  CHSC49545  Festuca arundinacea Vernon Oswald 1985-5-13 1756 Butte Upper Bidwell Park, Chico, on the s perimeter of the Police Pistol Range. 91 Comment
  CHSC52486  Festuca arundinacea J. D. Jokerst 1982-6-29 1546 B Butte Along the edges of various roads in the area. Grey Lodge Waterfowl Management Area, ca. 1/2 mile west of the headquarters on access road. Comment
  CAS-BOT-BC282486  Festuca elmeri A. A. Heller 1902-5-16 5562 Butte East Butte, Marysville Buttes Comment
  CHSC109547  Festuca microstachys L. P. Janeway 2012-6-7 10865 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC113277  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  JEPS110211  Festuca occidentalis Lowell Ahart 2006-7-16 12977 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
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  CHSC74165  Festuca subulata B. Castro; L. Gehrung 1998-6-23 796 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, ca 200 ft W of Oro-Quincy Hwy on E side of ridge overlooking Get-Up-and-Get Creek. Ca 100 ft above creek channel. 1213 Comment
  CHSC98943  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  SEINET10507969  Festuca subuliflora Lowell Ahart 1991-6-19 Ahart 6660 Butte Along the south side of the dirt road that goes to the Forbestown Reservoir, about 1 1/2 miles southwest of Forbestown Reservoir. Yellow Pine Forest. T19N R7E NW/S5. 610 Comment
  CHSC102413  Ficus carica Lowell Ahart 2009-6-30 15976 Butte On dry soil, along a small flowing stream, about 20 yards south of the fence, about 150 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 242 Comment
  UCD111860  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Sierra Nevada. 5.5 miles below West Branch Bridge, Feather River Highway. Comment
  CAS-BOT-BC454524  Fragaria vesca subsp. californica M. S. Taylor 1980-4-1 2421 Butte Along S side of Butte Creek, ca. 1/4 mile downstream from Honey Run covered bridge, ca. 6 miles E of Chico. 121 Comment
  CAS-BOT-BC437080  Fragaria virginiana subsp. platypetala H. F. Copeland 1920-8-29 162 Butte Jonesville 1219 Comment
  CAS-BOT-BC62902  Frangula californica subsp. tomentella John Thomas Howell 1955-6-14 30446 Butte Magalia. 731 Comment
  CAS-BOT-BC55652  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise 640 Comment
  CHSC110033  Fraxinus Lowell Ahart; Josephine Guardino 2012-10-12 18480 Butte About 100 yards northeast of the sign Orient Street and E 1st Street, on the east side of the bridge, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  SEINET10457425  Fraxinus latifolia Mary Susan Taylor 1975-5-6 Taylor 556 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC35986  Fremontodendron californicum J. D. Jokerst 1982-5-15 1582 Butte Ca 2.5 airline miles SW of Berry Creek, ca 2.0 mi N of Oro-Quincy Hwy on Ponderosa Way. Comment
  CHSC88654  Fritillaria eastwoodiae Linnea Hanson 1985-4-23 265 Butte Plumas National Forest. North side of Woodleaf Road. 853 Comment
  SEINET10469654  Fritillaria eastwoodiae Mary Susan Taylor 1979-3-20 Taylor 1947 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
  CAS-BOT-BC124015  Fritillaria eximia Mrs. J. H. Morrison 1932-3-20 s.n. Butte On the Pence grade, east of Paradise Comment
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
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Oct 5 2009
  CHSC2287  Fritillaria recurva R. M. Staley 1952-7-17 Butte Butte Creek. 365 Comment
  CHSC76969  Fritillaria recurva Margie Collins 1894-5-1 Butte Forest Ranch. Comment
  JEPS108824  Galium aparine Lowell Ahart 2006-5-8 12597 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  UC1609061  Galium aparine Lowell Ahart 1993-6-20 6988 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  POM193332  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  POM196538  Galium bifolium H. F. Copeland 1929-6-12 1212 Butte Jonesville. 1524 Comment
  SEINET10500691  Galium bifolium Mary Susan Taylor 1978-7-18 Taylor 1714 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  UC600431  Galium bifolium H. F. Copeland 1931-6-10 1517 Butte gulch draining into Colby Canyon 1524 Comment
  CHSC48881  Galium bolanderi Vernon Oswald 1984-6-19 1305 Butte Hwy 32, 6.3 mi N of Forest Ranch. Comment
  SEINET10500696  Galium bolanderi Mary Susan Taylor 1981-5-21 Taylor 3767 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CDA34715  Galium murale L. Ahart 2010-5-28 16748 Butte Cedar Grove Parking Area, in Lower Bidwell Park, Chico. Comment
  JEPS119899  Galium murale Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18104 Butte Along the west side of the horse trail, north of Table 25, north of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS127203  Galium parisiense Lowell Ahart 2016-6-4 20925 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  UC1523186  Galium porrigens var. tenue M. S. Taylor and L. Hanson 1981-3-16 3406 Butte e side Truex Rd ca 1/2 mi s jct. with Hwy 70 (ca 7 mi n of Oroville); Cherokee Quad. 304 Comment
  CHSC25270  Galium sparsiflorum subsp. glabrius M. S. Taylor 1977-6-26 1381 Butte On N side of Ponderosa Way, ca. 1/2 mi E of Cohasset. 762 Comment
  CHSC48887  Galium tricornutum Vernon Oswald 1986-4-28 1984 Butte Hamilton-Nord-Cana Hwy 0.5 mi N of Bennett Rd. 48 Comment
  CHSC54349  Galium tricornutum Lowell Ahart 1991-5-8 6649 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC169932  Garrya fremontii H. M. Edwards 1918-1-15 s.n. Butte De Sabla Comment
  HSC93378  Gastridium phleoides L. Ahart 1995-5-30 7584 Butte S of Beatson Hollow, 1/8 mi. N of Cherokee Road, N Table Mtn., 7 mi. N of Oroville. 335 Comment
  RSA716153  Gastridium phleoides L. Ahart 2005-7-13 12149 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
  UCD66713  Gastridium phleoides C. G. Albertus 1933-5-29 8 Butte 1/2 mi. N. of Wick. 60 Comment
  CHSC26705  Gayophytum diffusum subsp. parviflorum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1459 Butte On e side of Humboldt Rd, ca. 4.5 mi ne of Butte Meadows turnoff from Hwy 32. 1326 Comment
  JEPS117285  Gayophytum heterozygum Lowell Ahart 2010-9-21 17215 Butte On damp bare soil, open meadow like area in red fir forest, about 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  UCD103534  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32. Comment
  CHSC90079  Genista monspessulana Ross Rowland 2001-4-25 53 Butte On east side of Longview Road about 20 yards north of Skyway in Paradise. 616540mE/4400340mN/zone 10N. 463 Comment
  CHSC11983  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  JEPS121303  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards W of the old road, W of the first area to park, about 3.5 air miles NE of Oroville Dam. Comment
  CDA38793  Geranium dissectum L. Ahart 2012-5-2 17968 Butte Under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC77710  Geranium dissectum Anna Pinsky 1997-4-24 19 Butte Chico, Upper Bidwell Park, Salmon Hole, 100 ft. above Big Chico Creek. Comment
  JEPS122205  Geranium dissectum Lowell Ahart 2014-4-25 19399 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  RSA0028538  Geranium molle L. P. Janeway 2005-3-15 8358 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 kilometers northeast of Bruce Road. 134 Comment
  SEINET10495195  Geranium molle Lowell Ahart 1990-4-8 Ahart 6435 Butte East side of Pacific Heights Road, ca. 3.5 miles southwest of Oroville. T19N R3E c/S35. Foothill Woodland. 34 Comment
  CHSC43048  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of creek. 1097 Comment
  CHSC39273  Gilia capitata subsp. mediomontana Lowell Ahart 1983-6-26 4164 Butte Found along the sides of Bean Creek Road, about 1/2 mile south of Little Bald Rock. 1000 Comment
  CHSC4012  Gilia capitata subsp. pedemontana D. B. Joley 1967-4-21 26 Butte Ca. 5 feet from Humbug Rd. and ca. 2.2 miles e of Skyway and Humbug Rd. corner, Chico. 60 Comment
  CHSC71120  Gilia capitata subsp. pedemontana Jan Monelo 1989-4-11 6 Butte Ca 4 mi e of Chico, n bank of Honey Run Rd. 106 Comment
  CHSC82402  Gilia capitata subsp. pedemontana Lowell Ahart 2002-5-7 9626 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC1255  Gilia tricolor subsp. tricolor Eleanor Stilson 1897-6-1 Butte Comment
  UC196265  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CHSC41667  Ginkgo biloba L. P. Janeway 1986-3-19 1336 Butte City of Chico. Planted in the lawn behind the Bidwell Mansion. Comment
  CHSC34815  Githopsis diffusa subsp. robusta M. S. Taylor 1981-5-21 3768 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC96244  Githopsis pulchella subsp. campestris R. Fischer 2006-5-27 994 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  SEINET10460573  Githopsis pulchella subsp. campestris Roberson 1956-4-9 ROBERSON s.n. Butte Near Paradise along Skyway 549 Comment
  CHSC116983  Githopsis specularioides Lowell Ahart 2016-6-4 20932 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC67356  Githopsis specularioides James D. Jokerst; R. A. Schlising 1985-4-8 2217 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. 548 Comment
  CHSC116591  Glinus lotoides B. Castro; Robin Carter, Sabrina Bell 2013-10-3 2001 Butte Sacramento Valley. Ca 6 air mi SW of Oroville, 2 mi SE of Thermalito Afterbay and ca 0.5 mi W of Hwy 70 off Pacific Heights Road, in the Oroville Wildlife Area. 32 Comment
  CHSC83085  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  UC1586633  Glinus lotoides Vernon Oswald and Lowell Ahart 1990-10-11 4460 Butte about 4 mi s of Jarbo Gap (Dark Canyon arm of Lake Oroville, on bed of Dark Canyon Creek); Dark Canyon arm of Lake Oroville 243 Comment
  SEINET10473438  Gnaphalium Mary Susan Taylor 1980-5-31 Taylor 2749 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10473778  Gnaphalium chilense Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4226 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
  CAS-BOT-BC302470  Gnaphalium palustre A. A. Heller 1917-7-28 12827 Butte Butte Meadows 1280 Comment
  CHSC44903  Gnaphalium palustre Lowell Ahart 1988-7-24 6126 Butte At the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  JEPS108990  Gnaphalium palustre Lowell Ahart 2006-10-8 13425 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  SEINET10948371  Gnaphalium palustre Lowell Ahart 1986-11-9 Ahart 5450 Butte On damp red gravelly soil, on the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 37 Comment
  SEINET6167158  Goodyera oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC103931  Gratiola ebracteata Lowell Ahart 2010-5-16 16686 Butte On the bottom and sides of drainages and vernal pools, about 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  HSC23332  Grindelia hirsutula B. Wilson 1968-5-3 185 Butte On Skyway, 2 mi. W of Paradise, N side of the road Comment
  CHSC77477  Grindelia hirsutula var. davyi Anna Pinsky 1997-4-30 43 Butte Upper Bidwell Park, Bear Hole, 30 ft. away from Big Chico Creek. Comment
  CHSC109661  Gymnocladus dioicus Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chlico. 71 Comment
  CHSC25272  Hastingsia alba M. S. Taylor 1977-6-26 1391 Butte On ne side of Big Chico Creek directly under Ponderosa Way bridge, 5 mi e of Cohasset. 457 Comment
  CHSC106879  Hedypnois cretica Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 58 Comment
  CHSC109657  Hedypnois cretica Lowell Ahart 2012-5-12 18032 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. 237 Comment
  JEPS18174  Hedypnois rhagadioloides Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5603 Butte roadside at bridgehead North Fork Feather River (on Nelson Bar Road) 198 Comment
  SEINET10487247  Hedysarum boreale Mary Susan Taylor 1981-5-22 Taylor 3799 Butte Open grassy areas around a landing, ridge N of Flea Valley Creek drainage and above Pulga, about 5 air mi E of Magalia. 1006 Comment
  JEPS88225  Helenium puberulum Vernon H. Oswald and Lowell Ahart 1996-6-10 7737 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on riprapped bank of river at n end of the Riparian Sanctuary); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  CHSC30652  Helianthella californica var. nevadensis M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2305 Butte Off road from Magalia to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC28784  Hemizonia congesta subsp. luzulifolia J. D. Jokerst 1979-9-8 337 Butte Adjacent to fresh-water marsh. East of Chico-Butte City Hwy., 0.5 mi. N. of intersection with Nelson West Rd. 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
  SEINET9340684  Hemizonia fitchii Unknown 1937-7-11 37380 Butte 7 mi W of Honcut Open field Comment
  CHSC41381  Heracleum lanatum Lowell Ahart 1986-7-2 5342 Butte Along a small stream, south of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  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
  CHSC44868  Hesperevax acaulis var. robustior Lowell Ahart 1979-4-17 1828 Butte On a bank of North Honcut Creek, about 1/2 mile north of Avacado Avenue, about 3 air miles north-west of Bangor. 91 Comment
  CAS-BOT-BC310156  Hesperevax caulescens Peter H. Raven 1963-5-8 18363 Butte On State Highway 32, 5 miles west of Chico Comment
  CHSC11386  Hesperevax caulescens Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC115298  Hesperocyparis macnabiana Lowell Ahart 2015-4-30 20117 Butte On dry bare serpentine soil, about 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Chaparral. 890 Comment
  CAS-BOT-BC176219  Hesperolinon disjunctum Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CHSC40373  Hesperolinon micranthum Lowell Ahart 1985-6-30 5085 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 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
  CDA34983  Heteranthera rotundifolia John 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, north of Biggs, 2.5 mi. west of Hwy 99, 955 Butte City Hwy. (Hwy 162). 0 Comment
  UC1925781  Heteranthera rotundifolia unknown 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC96223  Heterocodon rariflorum R. Fischer 2006-5-20 976 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants found in a spring watered grassy patch of soil along the access road to the southern Humboldt Trailhead, adjacent Hwy. 32. 313 Comment
  RSA755270  Heterocodon rariflorum L. Ahart 2009-5-15 15699 Butte About 60 yards NW of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 2/3 air mile W of Highway 32, about 10 miles NE of Chico. 268 Comment
  UCSB63791  Heterocodon rariflorum Ahart, Lowell 1997-8-1 Butte Damp rocky dark soil, 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. Uncommon, inconspicuous. Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CAS-BOT-BC310278  Heterotheca grandiflora John Thomas Howell 1959-9-20 34626 Butte Eastern outskirts of Oroville 60 Comment
  CAS-BOT-BC310277  Heterotheca grandiflora A. A. Heller 1940-9-28 15840 Butte 1 mile above Pentz on the Paradise grade Comment
  JEPS115602  Heuchera micrantha var. erubescens Lowell Ahart 2009-5-23 15738 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  RSA0062974  Heuchera micrantha var. erubescens C. C. Bruce 1897-05 2041 Butte Iron Canyon. Comment
  SD8927  Hieracium albiflorum Mrs. R. M. Austin 1883-1 Butte Comment
  SEINET10475294  Hieracium argutum Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4210 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  SEINET13710942  Hoita macrostachya Lowell William Ahart, Lowell William Ahart 2003-1 10420 Butte About 4 Air Mi. SW of Forbestown (39 Deg 29'53.2"N, 121 Deg 20'22.7"W) 2350 Ft. 716 Comment
  CHSC40422  Hoita orbicularis Lowell Ahart 1985-7-24 5150 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC41363  Hoita orbicularis R. A. Schlising; R. Banchero 1980-7-7 3839 Butte Along logging road E of Village of Feather Falls in E part of county. Near head of Little Buckeye Creek. 998 Comment
  CHSC70793  Hoita orbicularis B. Castro; H. Durio, L. Gehrung 1995-7-24 590 A Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC27242  Holcus lanatus P. Moyer 1972-4-9 170 Butte Chico State campus. Railroad tracks service road. 60 Comment
  CHSC40330  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 487 Comment
  JEPS108574  Holodiscus discolor L. P. Janeway, Matt Brown, S. Mackey Hillaire, L. Hanson 2005-4-25 8370 Butte Northern High Sierra Nevada. Plumas National Forest; north end of Rocky Ridge, southwest side of Rim Road (Ponderosa Way) 1.4 road km southeast of junction with Concow Road 1036 Comment
  CAS-BOT-BC150113  Holodiscus microphyllus var. glabrescens A. A. Heller 1914-8-7 11667 Butte Summit back/east of Jonesville 2133 Comment
  UCD85412  Hordeum brachyantherum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  UCD85409  Hordeum brachyantherum subsp. brachyantherum Robert E. Preston 1982-7-21 345 Butte Ca. 1.1 miles W of Philbrook Res. Upper Montane Forest. 1676 Comment
  CAS-BOT-BC285090  Hordeum marinum subsp. gussoneanum Lowell Ahart 1982-4-29 3397 Butte Ca. 0.75 mi. W of the sign-in station, Gray Lodge, ca. 12 mi. SW of Gridley 35 Comment
  CHSC82710  Hordeum murinum subsp. leporinum Tara Morgan 2002-4-23 47 Butte Along side the upper South Rim Trail (Green Gate Trail) north of the upper boundary of Upper Bidwell Park. This location is off of Highway 32 east of Chico within the Big Chico Creek Watershed near the watershed divide. 451 Comment
  CAS-BOT-BC536584  Horkelia californica var. elata Lowell Ahart 1980-7-29 2505 Butte Sierra Nevada, near Forbestown Road 750 Comment
  CAS-BOT-BC143975  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CAS-BOT-BC143979  Horkelia fusca var. tenella H. F. Copeland 1928-8-20 458 Butte Jonesville 1524 Comment
  CHSC46400  Horkelia tridentata Lowell Ahart 1989-5-28 6277 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  UC398920  Horkelia tridentata subsp. tridentata E. B. Copeland 1929-7-23 370 Butte Jonesville 1550 Comment
  CAS-BOT-BC206135  Hosackia crassifolia V. Oswald; L. Ahart 1988-7-13 3582 Butte Road to High Lakes e of Philbrook Reservoir, on the n side of the road, on dry margins of a seep on a steep outcropping 1859 Comment
  CHSC45284  Hosackia pinnata Vernon Oswald 1987-4-28 2348 Butte Jordan Hill Rd. between Griffin Gulch and the road to Sawmill Peak Lookout. 914 Comment
  CHSC8585  Hosackia pinnata B. Jackson 1968-5-5 27 Butte Taken ca. 1 mi S. of Cohasset along stream by Cohasset Rd. 365 Comment
  CHSC116329  Hydrocotyle umbellata Lowell Ahart 2015-10-20 20571 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC34142  Hydrocotyle umbellata L. Ahart 1981-9-27 3212 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  CHSC107593  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
  CHSC45900  Hypericum anagalloides Lowell Ahart 1977-6-3 1404 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  OBI5722  Hypericum anagalloides H. F. Copeland 1928-7-21 321 Butte Neighborhood of Jonesville. Woods by Jones Crk 1524 Comment
  SEINET10839415  Hypericum anagalloides Mary Susan Taylor Taylor 321 Butte 61 Comment
  UC334468  Hypericum anagalloides unknown Butte 40 mi. above Chico (on Humboldt grade, Camp Colby); Camp Colby Comment
  CHSC5954  Hypericum calycinum M. MacArthur 1968-6-17 183 Butte Chico State College Campus, SE wall of Life Science bld. 60 Comment
  CAS-BOT-BC410220  Hypericum concinnum Lowell Ahart 1983-6-21 4059 Butte Along Bloomer Hill Road, 1/8 mile west of the Oroville Quincy highway, 1 1/4 miles south of the Berry Creek School, north-east of Oroville. Section 5. 400 Comment
  CDA36535  Hypericum concinnum Bellue & Berry 1938-6-9 Butte 10 miles west of Thermalitos on main highway. 0 Comment
  SEINET5343949  Hypericum concinnum K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC58921  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte On the bottom of Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC63820  Hypericum formosum var. scouleri S. C. Morey 1983-7-28 633 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC51265  Hypericum perforatum Lowell Ahart 1990-10-3 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC401335  Hypericum scouleri E. B. Copeland 1930-7-18 426 Butte Jonesville 1550 Comment
  JEPS43465  Iris chrysophylla Joan O. Danielson 1966-4-6 17 Butte Oregon Gulch Road 609 Comment
  UC1188257  Iris hartwegii L. W. Lenz and E. K. Balls 1957-5-23 22527 Butte 11.5 mi s Lomo (State Hwy 32) 944 Comment
  RSA136682  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-22 22503 Butte Feather River Highway U.S. 40 alt., 18 miles northeast from Oroville 701 Comment
  CHSC52481  Iris macrosiphon Stacy Scott 1981-4-14 Butte 1.2 km E of hwy323 and Santos Wayjct on Santos Way, ca 11.2 km NNE of Chico. Comment
  SEINET3876030  Iris macrosiphon D. W. McNeal, Todd McIntyre 1989-4-18 3369 Butte Shady oak woodland on the margin of a barren serpentine outcrop above Lunt Rd., 0.4 mi. North of Highway #70.; 0 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
  CHSC94929  Isoetes howellii W. Gray; M. Brown 2005-3-16 34 Butte West of Wildwood park, Chico. 85 Comment
  SEINET3863802 Image available Isoetes howellii Barbara Ertter, Jeff Strachan; Lowell Ahart 1980-5-7 3288 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville and Marysville, dry ditches in oat field near ponds, Valley Grassland.; 0 30 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-BC61875  Isoetes nuttallii Lowell Ahart 1980-4-19 2087 Butte Valley Grassland, Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC61878  Isoetes nuttallii Lowell Ahart 1975-5-3 s.n. Butte near North Honcut Creek, Peter Ahart Ranch, Honcut 45 Comment
  CHSC36897  Isoetes nuttallii L. Ahart 1982-6-15 3563 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  JEPS98371  Isoetes nuttallii Lowell Ahart 2000-6-29 8545 Butte 5 air miles E of Magalia (SW part of Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  CHSC108964  Jasminum mesnyi Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17867 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13, Lower Bidwell Park, Chico. 65 Comment
  HSC72758  Jensia rammii M. S. Taylor 1980-5-27 2672 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  UCD133407  Jensia rammii L. Ahart 1976-4-15 1067 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC5934  Juglans californica var. hindsii M. MacArthur 1968-6-17 166 Butte SW side of Big Chico Creek near Life Science bld., Chico State College campus. 60 Comment
  SEINET4691794  Juncaceae Peter F. Zika 2011-1 25543 Butte near parking for Big Bald Rocks Trailhead, 0.2 air miles E of Big Bald Rocks 1050 Comment
  CHSC36891  Juncus L. Ahart 1982-6-1 3527 Butte Along the road, ca. 1/2 mi sw of the jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC61932  Juncus acuminatus Lowell Ahart 1993-11-1 7273 Butte On the Rice Experiment Station, on the south side of Butte City Highway, east of the Southern Pacific Railroad, west of Riceton Road, about 3 1/4 miles north-west of Biggs. 30 Comment
  CHSC31925  Juncus bufonius var. bufonius J. D. Jokerst; B. Banchero, R. A. Schlising 1980-6-16 840 Butte 0.1 mi W of junction of Skyway and Humboldt Rd., N of and adjacent to the latter. Comment
  CHSC99312  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 A Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  JEPS120619  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. Comment
  CHSC27063  Juncus bufonius var. congestus Lowell Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. On the bottom of a swale. 50 Comment
  UCSB63749  Juncus bufonius var. congestus Ahart, Lowell 1998-5-2 Butte T17N, R2E, southwest 1/4 Section 7; graded north side of Evans Reimer Road; about 1/4 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC82263  Juncus capitatus Lowell Ahart 2002-4-24 9535 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  SEINET226470  Juncus capitatus B. Ertter, JL Strachan; L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Marysville and Oroville 30 Comment
  UC1609271  Juncus covillei var. obtusatus Lowell Ahart 1993-6-26 7010 Butte about 1/4 mi w of Lost Creek Reservoir (on an old logging road, n of the dirt road) 1036 Comment
  CDA2695  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte Along Black Bart Road, Forbestown. 0 Comment
  JEPS114881  Juncus effusus subsp. effusus Lowell Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam 258 Comment
  RSA0113968  Juncus effusus subsp. pacificus Lowell A. Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 0.25 mile west of the Ponderosa Dam. 258 Comment
  CHSC11961  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville. In marsh. 1550 Comment
  CHSC44647  Juncus ensifolius J. D. Jokerst; R. A. Schlising 1982-10-7 1660 Butte Along the margins of the West Branch of the Feather River, at Coon Hollow where Forest Service Road 27N74 crosses the river. 1615 Comment
  UC600804  Juncus ensifolius H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 Comment
  SEINET10839421  Juncus ensifolius Mary Susan Taylor 1978-4-14 Taylor 1565 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
  CHSC113446  Juncus hemiendytus var. hemiendytus Lowell Ahart 2014-7-10 19623 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC82287  Juncus leiospermus var. ahartii Lowell Ahart 2002-4-24 9536 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CAS-BOT-BC110141  Juncus leiospermus var. leiospermus Lowell Ahart 1984-4-6 4543 Butte About 0.5 mile north of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC113236  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19390 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 366 Comment
  CHSC30361  Juncus leiospermus var. leiospermus J. D. Jokerst 1980-5-15 699 Butte Top of Cohasset Ridge ca 1/4 mi E of Cohasset Hwy. 487 Comment
  JEPS122233  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19392 Butte About 1 1/8 miles northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC600803  Juncus mexicanus H. F. Copeland 1930-7-28 Butte by Humbug Road Jonesville 1828 Comment
  UC600798  Juncus nevadensis E. B. Copeland Butte Jonesville Comment
  CHSC82471  Juncus occidentalis Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9740 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
  CHSC71201  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 Butte Center of a seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  HSC100818  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the N edge of a good forest road, W edge of Know-northing Creek, ~150 yd. N of Lumpkin Ridge Rd., 5 (air) mi. NE of Feather Falls. 1225 Comment
  CHSC44524  Juncus oxymeris Lowell Ahart 1988-6-28 6083 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  JEPS102314  Juncus patens Lowell Ahart 2001-7-6 8881 Butte 12 mi SW of Chico (W of a large pond, large overflow area on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 2 mi SE of Ord bend[sic]) 32 Comment
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Nov 27 2006
  JEPS116053  Juncus tenuis Lowell Ahart 2009-6-18 15910 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcutt Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  SBBG128724  Juncus triformis L. Ahart 2011-7-9 17563 Butte wet open area of almost bare rock, ca. 1/4 mi E of Little Bald Rock, ca. 2 mi (air) SE of Brush Crk, ca. 15 mi (air) NE of Oroville 1009 Comment
  CAS-BOT-BC279912  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands (n SNH) 830 Comment
  CHSC47572  Juncus uncialis Lowell Ahart 1974-4-11 364 Butte In a small vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1543891  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Peter Ahart Ranch Honcut 50 Comment
  JEPS113743  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
  CHSC28868  Juniperus californica M. S. Taylor 1980-3-1 2334 Butte Ca. 100 ft n of Neal Rd, ca. 2 1/2 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 137 Comment
  CAS-BOT-BC235616  Keckiella breviflora var. breviflora Lowell Ahart 1980-6-19 2386 Butte Along Swedes Flat Road, near Bangor 97 Comment
  JEPS120588  Kickxia elatine Lowell Ahart 2013-11-18 19286 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC46287  Kochia scoparia Vernon Oswald 1989-5-15 3768 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On the ranch road just s of the lighted parking area near the south gate. 18 Comment
  CHSC41996  Kumlienia hystricula Lowell Ahart 1975-3-7 707 Butte Along a small stream, along Ponderosa Way, about 2 miles south of the Ponderosa Dam, north-west of Forbestown. 426 Comment
  JEPS115721  Lactuca saligna Lowell Ahart 2009-8-3 16254 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  SEINET10473493  Lagophylla Mary Susan Taylor 1980-6-29 Taylor 2991 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CAS-BOT-BC341291  Lagophylla glandulosa John Thomas Howell 1961-9-22 36746 Butte Feather River Highway, 3 miles from Oroville Comment
  CAS-BOT-BC341294  Lagophylla glandulosa Lowell Ahart 1979-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10474761  Lagophylla glandulosa Mary Susan Taylor, M. Hayes 1977-6-27 Taylor 1396 Butte Butte College Campus, ca. 15 mi SE of Chico via Hwy 99 & Pentz Rd. Comment
  SEINET12319532  Lamium amplexicaule W. K. Cheechov 1978-1 18 Butte 200 FT ENE of Cohasset HWY, 0.7 MI N of East Lassen Ave. Chico 85 Comment
  CAS-BOT-BC337912  Lasthenia californica Lowell Ahart 1970-4-20 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CAS-BOT-BC213340  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  POM219421  Lathyrus nevadensis subsp. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  JEPS84919  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CDA15364  Lathyrus sulphureus G. F. Hrusa 1997-5-29 13801 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  SEINET10452339  Lathyrus sulphureus Lowell Ahart 1984-6-8 Ahart 4661 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  SEINET12164086  Lathyrus sulphureus Unknown 1984-1 11 Butte ca 2.1miS of Concow reservoir and .3miE of Concow Rd. along Deadwood Creek Rd. see comments 457 Comment
  JEPS120931  Lavatera cretica Lowell Ahart 2013-5-21 18702 Butte On the W side of Hwy 99E, 30 yards N of the W Rio Bonita Road, about 1 mile NE of Biggs. Comment
  CAS-BOT-BC321758  Layia fremontii Richard R. Halse 2002-3-27 6151 Butte At the junction of State Hwy 99 and Hamilton Nord Cana Hwy, ca 8 miles NW of Chico. 40 Comment
  CHSC101985  Layia fremontii Linda Osborne 1980-4-10 4 Butte Chico. Ca. 100 m SE of Notre Dame Blvd, 200 m NE of Skyway. Comment
  CHSC24144  Layia fremontii B. Bunge 1976-4-12 7 Butte Growing 25 yd. nw of intersection of Notre Dame Blvd. and Skyway near Chico. 67 Comment
  CHSC3264  Layia fremontii M. L. Hellier 1966-3-21 17 Butte Along rd. side about 1/2 mile e. of Hwy. 99 E. on Pentz rd. Comment
  CHSC3872  Layia fremontii Gerry Carrauthers 1966-3-21 70 Butte Pentz Rd. ca. 15 mi. E. of Clark Rd. Ca. 15 mi. S.E. of city of Chico. Along roadside. Comment
  UC894089  Layia fremontii A. A. Heller 1914-4-14 11235 Butte 8 mi n Oroville Comment
  CAS-BOT-BC321757  Layia fremontii N. Wynne; M. Peckham; J. Bamesberger 1914-3-28 54 Butte Table Mountain, Cherokkee Rd., approx. 2 miles E of Hwy 70. Comment
  HSC38062  Layia fremontii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2470 Butte Beside SR 191 just N of its junction with SR 70 Comment
  UC2044596  Layia platyglossa George K. Helmkamp with E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. (Biggs 7.5' Q.) Comment
  UCD63517  Leersia oryzoides L. E. Hazeltine 1916-7-12 Butte Chico. Comment
  CDA39175  Lemna minuta L. Ahart 2006-5-26 12639 Butte 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. 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
  SEINET10474774  Leontodon leysseri Mary Susan Taylor 1977-8-16 Taylor 1444 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC108760  Leontodon saxatilis subsp. longirostris L. P. Janeway 2011-6-7 10367 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC101265  Lepidium chalepense Lowell Ahart 2009-4-2 15520 Butte East side of Highway 99, about 1 mile south of Gridley. 27 Comment
  UCSB64016  Lepidium latifolium Ahart, Lowell 1981-9-10 Butte Near the entrance to the Gray Lodge Waterfowl Management Area; west of Pennington Road; about 12 miles southwest of Gridley 30 Comment
  SEINET10907265  Lepidium nitidum Mary Susan Taylor 1974-3-26 Taylor 88 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  SEINET11991649  Lepidium nitidum Unknown 1982-1 19 Butte ca jct of Skyway & Bruce Rd, ca 0.5 mi E of Hwy 99, E of Chico 76 Comment
  CHSC40530  Lepidium perfoliatum Lowell Ahart 1985-4-1 4874 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  UC436299  Lepidium virginicum var. pubescens E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  CHSC55065  Leptochloa fusca subsp. fascicularis Lowell Ahart 1991-9-14 6721 Butte Margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  SEINET10588903  Leptochloa fusca subsp. fascicularis Lowell Ahart 1986-11-14 Ahart 5480 Butte On dry red gravelly soil, on the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road about 6 miles southwest of Oroville. Valley grassland. 37 Comment
  CHSC31377  Leptosiphon bicolor Roberta A. Boer 1980-4-13 10 Butte Ca. 1/4 mi w of Foothill Blvd., 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  UCD73015  Leptosiphon bicolor Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  UCSB63627  Leptosiphon bicolor Curtis, Lisa 1982-4-17 Butte no data 88 Comment
  CHSC34990  Leptosiphon bolanderi R. A. Schlising 1981-4-7 4019 Butte NE of Chico and S of Forest Ranch; 2.1 mi N of jct with Humboldt Road, along Hwy 32. Comment
  CHSC29379  Leptosiphon ciliatus R. A. Schlising; R. Banchero 1980-6-12 3686 Butte 4.6 mi s of Butte/Tehama County line on Hwy 32; roadside. Comment
  CHSC52452  Leptosiphon ciliatus R. A. Emmrich 1975-4-24 60 Butte Ca 1/2 mi E of Butte Cr and 1/4 mi SE of Covered Bridge, 6 mi ESE of Chico. 106 Comment
  POM74989  Leptosiphon filipes C. C. Bruce 1897-04 1968 Butte [name of locality illegible] Comment
  CHSC30808  Leptosiphon parviflorus M. S. Taylor; J. D. Jokerst 1980-4-19 2545 Butte S side of Butte Creek, on bluffs above the creek, ca. 1/4 mi upstream (n) from Honey Run Covered Bridge, ca. 6 mi e of Chico. 182 Comment
  CAS-BOT-BC123154  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CHSC88092  Lessingia nemaclada Jenny Marr 1993-7-1 98 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine rock outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  UCD69222  Lessingia nemaclada D. Sanchez-Mata; P. Rodriguez-Rojo, D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside Magalia Res. 310 Comment
  CAS-BOT-BC341797  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte At Paradise Comment
  CAS-BOT-BC341798  Lessingia nemaclada A. A. Heller 1940-9-28 15841 Butte Upper end of the Honey Run grade at Paradise Comment
  CHSC42469  Leucanthemum vulgare Lowell Ahart 1987-5-27 5692 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM196087  Leucophysalis nana H. F. Copeland 1929-6-9 1228 Butte Jonesville. 1524 Comment
  CHSC100835  Lewisia triphylla R. A. Schlising; R. Banchero 1981-5-20 4067 Butte E of village of Feather Falls on Lumpkin Ridge. Comment
  UC119803  Lilium parvum Mrs. R. M. Austin Jul 1896 12 Butte Colby Comment
  CHSC41464  Lilium washingtonianum Lowell Ahart 1986-7-2 5335 Butte About 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  SEINET12183586  Limnanthes alba E. L. Knight 1988-1 16 Butte Small clustered population, ca 100 ft w of Ceanothus Road and ca 1 m n of East Avenue, in N. Chico 58 Comment
  CHSC1006  Limnanthes alba subsp. alba A. Goekler 1929-4-23 Butte Hooker Oak road. 60 Comment
  CHSC46293  Limnanthes alba subsp. alba Vernon Oswald 1989-5-11 3763 Butte Santos Rd between Hwy 32 and Doe Mill Ridge, s of Little Chico Creek. 335 Comment
  SEINET10865625  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 Ahart 6648 Butte about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 37 Comment
  CHSC30383  Limnanthes douglasii subsp. nivea J. D. Jokerst 1979-3-20 1147 Butte Around the edges of vernal pools and creeks. Top of North Table Mt., ca .5 mi N of the Jct of Cherokee Rd and the E edge of the Mt. 396 Comment
  CHSC1009  Limnanthes douglasii subsp. rosea A. Goekler 1929-3-11 Butte Hooker Oak road. 60 Comment
  CHSC111383  Limnanthes douglasii subsp. rosea Lowell Ahart 2012-5-2 17966 Butte On the bottom of a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 89 Comment
  CHSC67556  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3242 Butte Rancho Arroyo Population along dirt road ca. 0.25 mi E of Stern's location. 79 Comment
  UC971798  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1254 Butte Table Mt. Oroville (summit) Comment
  UC1748334  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3045 Butte ca. 150 m W of Cohasset Rd., ca. 1/6 mi S of jct. with Keefer Rd. 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
  SEINET10496789  Linanthus bicolor Mary Susan Taylor 1980-4-16 Taylor 2491 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC3813  Linanthus dichotomus L. E. Dunkel 1965-3-30 4 Butte Side of hill ca. 25 yards east of State Highway 32 at curve 7 mi. e of Chico City limits (99 Freeway overpass). 357 Comment
  LA206569  Linanthus pungens E. B. Copeland; 1931-6-22 682 Butte Jonesville 655 Comment
  CDA6352  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte On the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. Comment
  CDA6347  Linaria genistifolia subsp. dalmatica T. C. Fuller 1962-7-12 9163 Butte East side of Pentz-Magalia Road just south of Merrill Road, 1.2 miles south of Magalia. 0 Comment
  CHSC43147  Lindernia dubia var. anagallidea Robert Banchero 1979-9-23 37 Butte SW of Chico, just e of Sacramento River. 30 Comment
  CDA41688  Lindernia dubia var. anagallidea T. C. Fuller 1976-8-1 20164 Butte Rice Exp. Station, ca. 3 miles north of Biggs. 0 Comment
  CHSC39230  Linum bienne M. S. Taylor; K. Tharp 1983-3-11 5226 Butte Along Foreman Creek Rd leading to Foreman Creek Boat-In Camp on Lake Oroville, off Hwy 162, ne of Oroville. Comment
  JEPS120945  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, SW of the dredge pond, W of the barn, about 3.25 air miles NE of Honcut. Comment
  JEPS127061  Linum bienne Lowell Ahart 2016-5-14 20825 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC44285  Linum lewisii var. lewisii Vernon Oswald 1988-6-14 3383 Butte Rim Rd. or Ponderosa Way (23N06) 0.8 mi se of Concow Rd., ne of Lake Concow. Scattered on a brushy serpentine outcrop. 975 Comment
  CHSC45179  Lipocarpha Lowell Ahart 1973-6-28 259 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC51023  Lipocarpha Lowell Ahart 1990-7-15 6566 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC85004  Lipocarpha micrantha L. P. Janeway 2003-9-3 7974 Butte Northern High Sierra Nevada. A little below high water line on north side of South Fork Feather River arm of Lake Oroville, about 35 m west of the Enterprise Boat Ramp, about 1.6 km west-northwest of the north end of Enterprise Bridge. 268 Comment
  POM142577  Lithophragma bolanderi Copeland 1903-4-11 3041 Butte Chico Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CHSC6294  Lithophragma parviflorum L. Lyons 1967-4-27 Butte On south side of Rcihardson's Spring Rd. 1.8 mi e of entrance on n Cohasset Rd. 3.5 mi from Chico. 76 Comment
  RSA176430  Lithophragma parviflorum var. trifoliatum A. A. Heller 1921-3-27 13531 Butte Along Butte Creek E of Chico near the Honey Run grade bridge. Comment
  CHSC93869  Lithospermum californicum Lowell Ahart 2006-6-9 12641 Butte In the center of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  SEINET10506965  Lolium Mary Susan Taylor 1981-5-1 Taylor 3583 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  SEINET241452 Image available Lolium multiflorum A. A. Heller 11420 Butte 8 miles north of Oroville 2 Comment
  UCD66065  Lolium multiflorum A. A. Heller 1914-5-19 11420 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC269075  Lolium perenne John Thomas Howell; Gordon H. True 1967-6-11 42557 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  CAS-BOT-BC269079  Lolium perenne Lowell Ahart 1980-5-10 2231 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS103519  Lolium perenne Lowell Ahart 2002-6-2 9675 Butte Drainage, E of the large exposed drain pipe, road cut on the S side of Lumpkin Road, ca 1 mile NE of the intersection of Lumpkin Road and Forbestown Road, ca 12 miles (air) E of Oroville. 548 Comment
  RSA713011  Lolium perenne subsp. multiflorum L. Ahart 2005-12-11 12519 Butte 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
  CHSC42598  Lomatium caruifolium var. denticulatum Vernon Oswald 1985-3-4 1683 Butte Chico Municipal Airport near the e end of Piper Ave. 80 Comment
  CHSC4048  Lomatium dasycarpum subsp. tomentosum Ann Dolder 1967-4-26 Butte Ca. 1000 yards e of Salmon hole near rock cliff, Bidwell Park, Chico. 76 Comment
  RSA699520  Lomatium dasycarpum subsp. tomentosum R. D. Fischer 2004-4-3 72 Butte Edge of upper Bidwell Park in Chico on the east side addition along Highway 32, road near the north end of Humboldt Trail 427 Comment
  UC195446  Lomatium dasycarpum subsp. tomentosum A. A. Heller 1914-4-13 11259 Butte 8 mi. n. Oroville Comment
  SEINET10972965  Lomatium dasycarpum subsp. tomentosum Mary Susan Taylor 1980-5-24 Taylor 2742 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC87778  Lomatium dissectum var. multifidum Paul Maslin 2004-4-30 30 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610592E 4410317N. 457 Comment
  POM78413  Lomatium macrocarpum C. C. Bruce 2056 Butte Foothills Comment
  CDA38463  Lomatium marginatum T. C. Fuller 1962-5-17 8710 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  SEINET10454499  Lomatium marginatum Mary Susan Taylor 1981-4-5 Taylor 3490 Butte T21N R4E nw sec 12; Berry Creek quad. E side of Dark Canyon Rd, 2.5 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Roadside; 1300 ft. 396 Comment
  CHSC93489  Lomatium marginatum var. marginatum Lowell Ahart 2006-5-8 12606 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC103740  Lomatium utriculatum Lowell Ahart 2010-5-16 16699 Butte About 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC38291  Lonicera interrupta Vernon Oswald 1983-5-31 593 Butte Upper Bidwell Park. 1000 ft N of Upper Park Rd. and 1600 ft W of the power lines. 109 Comment
  CHSC50660  Lonicera interrupta Lowell Ahart 1990-6-16 6510 Butte On the north side of the dirt road, south-west of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CHSC46471  Lonicera involucrata var. involucrata Vernon Oswald 1989-6-19 3808 Butte Road between Fall River and Cascade, ca. 7.5 mi (air) NNE of Feather Falls. 1219 Comment
  SEINET10484212  Lotus Mary Susan Taylor 1981-5-5 Taylor 3602 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  SEINET10451958  Lotus argophyllus var. fremontii Mary Susan Taylor 1980-5-27 Taylor 2665 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
  SEINET10906988  Lotus argophyllus var. fremontii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4256 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
  SEINET10451970  Lotus humistratus Mary Susan Taylor 1981-4-21 Taylor 3550 Butte T23N R4E sw sec 36, Pulga SW quad. Serpentine, S side of Concow Rd, on ridge, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 2 mi N of Lake Concow, ca. 20 air mi NE of Oroville. 2800 ft. 853 Comment
  UC176259  Lotus incanus A. A. Heller 1913-6-7 10797 Butte near Stirling 1074 Comment
  CDA27215  Lotus incanus Sterling O. Mattoon, J. Harroun 1971-5-27 Butte Along driveway into property, James Knibbs property, Skyway, Stirling City. 0 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
  UC1594550  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  SEINET10452012  Lotus scoparius Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4691 Butte Along edge of a new subdivision road ca. 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetary, ca. 10 mi E of Oroville; Foothill Woodland; 500 m. 500 Comment
  SEINET12165110  Lotus scoparius L. Ahart, Ahart, P. 1984-1 4691 Butte ca 1miSE of Hurleton, 1/12miE of Oak Grove Cemetary, ca 10miE of Oroville 500 Comment
  JEPS114736  Lotus strigosus Lowell Ahart 2008-5-12 14734 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  SEINET2062321 Image available Lotus unifoliolatus Marc Mittleman 1980-8-1 225 Butte L:ittle Chico Creek, adjacent to China Garden Springs. 262 Comment
  CDA36456  Ludwigia decurrens M. Stewart & C. Mutters 2011-9-13 PDR# 1373328 Butte South-southwest of Richvale. 0 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
  CHSC66896  Ludwigia peploides subsp. montevidensis Vernon H. Oswald 1996-10-22 8300 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. Along the edge of the Feather River. 33 Comment
  RSA0036525  Lupinus adsurgens Daisie Huang 2006-8-3 06080302 Butte Skyway Rd. north of Stirling City. Comment
  SJSU10703  Lupinus albicaulis G. L. Baker 1968-5-4 66 Butte above Paradise Reservoir near Paradise 518 Comment
  UC865406  Lupinus albicaulis A. A. Heller 1937-5-31 15339 Butte on Highway #24 near the junction of the Yankee Hill Road about 21 mi from Oroville Comment
  POM253000  Lupinus albicaulis subsp. purpurascens A. A. Heller 1937-5-31 15339 Butte Highway #24 near the junction with the Yankee Hill road about 21 miles from Oroville. Comment
  CHSC34692  Lupinus albicaulis var. shastensis M. S. Taylor 1981-5-14 3716 Butte N side of 23N00.2, 2.9 mi sw of Merrimac on Oroville-Quincy Hwy. 975 Comment
  SFV11556  Lupinus albifrons M. L. Vincent 1965-4-16 618 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  SEINET10488402  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3480 Butte T21n,r4e,sec.2 se 1/4. Berry creek quad. E side of dark canyon road, 2.2 miles S of its junction with big bend roads, ca 3 air miles s of jarbo gap on hwy 70. Steep rock-wall, open. Assoc.; Mimulus kelloggii, diplacus grandiflorus 427 Comment
  CAS-BOT-BC196250  Lupinus albifrons var. eminens A. A. Heller 1913-5-28 10764 Butte Eight miles north of Oroville 182 Comment
  CHSC90490  Lupinus bicolor Andrew D. Lane 1984-4-22 9 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  CHSC40600  Lupinus bicolor subsp. tridentatus J. D. Jokerst; M. S. Taylor, L. Ahart 1984-4-6 1960 Butte N of Kunkle Reservoir, on ridge s of Paradise. 457 Comment
  SEINET10838149  Lupinus bicolor subsp. tridentatus Johnson 1978-4-16 Johnson 2 Butte Corolla blue, with purple-spotted white patch on banner. E side of cohasset Rd. At lassen ave., 3 Mi. N of chico, butte co, calif. At edge of moist Pasture in gravelly loam with grass and other annuals of valley grassland. 61 Comment
  CHSC54367  Lupinus bicolor var. tridentatus M. Bailey 1991-3-30 556 Butte Butte College campus, n side of hill directly ne of water tower, distance ca 1/4 mi. 176 Comment
  SEINET10485236  Lupinus densiflorus var. lacteus W. E. Hartman 1972-4-29 Hartman 7 Butte Corolla white; fls fragrant. Locally abundant on cliff by centerville rd. .6 Mi. N of centerville cemetary. Rocky, sandy loam. Assoc: trifolium Tridentatum. 244 Comment
  JEPS113885  Lupinus grayi L. P. Janeway 2007-7-2 9078 Butte Northern High Sierra Nevada; Plumas National Forest; along the road to Cascade 1.2 road km N-NW of its crossing of Fall River; 0.3 air km E of the confluence of Dark Canyon at Fall River 1067 Comment
  SEINET10489238  Lupinus latifolius subsp. longipes Lowell Ahart 1984-6-8 Ahart 4683 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca 6 mi NE of Ponderosa Dam, ca 4 mi SE of Feather Falls; Yellow Pine Forest. 1/3 of stems; on damp red soil; scattered in the area; flowers purplish. 550 Comment
  CHSC31153  Lupinus latifolius var. columbianus M. S. Taylor 1978-7-21 1822 Butte On s side of Oroville-Quincy Hwy, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC81268  Lupinus microcarpus var. densiflorus J. Trizzino 2001-4-24 49 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Along Big Chico Creek. 91 Comment
  CHSC76941  Lupinus nanus Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  UCD108989  Lupinus nanus A. A. Heller 1913-3-9 10685 Butte hills two miles north of Oroville. 91 Comment
  UCD69696  Lupinus nanus Ellen Hammond 1982-4-18 17 Butte Top of Table Mountain, along parking area. 396 Comment
  UCD109078  Lupinus nanus P. B. Kennedy 1914-5-8 4764 Butte Grade to Paradise. Comment
  CHSC43386  Lupinus nanus var. vallicola Lowell Ahart 1978-5-2 1711 Butte Near the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 457 Comment
  CHSC31110  Lupinus polycarpus Roberta A. Boer 1980-4-13 3 Butte Ca. 1/4 mi w of Foothill Blvd. and 2.7 mi se of jct of Olive Hwy and Foothill Blvd., ca. 3.5 mi se of Oroville. 121 Comment
  CHSC83885  Lupinus polycarpus Lowell Ahart 2003-4-8 10038 Butte Pasture field, about 400 yards north of the falls on Coon Hollow, about 1/2 mile west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 331 Comment
  CHSC94276  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC34234  Lupinus stiversii M. S. Taylor 1981-5-6 3627 A Butte N side of Ponderosa Way, 0.2 mi n of small bridge over Sucker Creek, ca. 3 air mile of Enterprise Bridge, ca. 4 air mi sw of Feather Falls. 335 Comment
  RSA126017  Lupinus stiversii E. K. Balls 1957-5-22 22510 Butte Near Tobins, about 7 mi. ne. Butte-Plumas Co. line. 640 Comment
  SEINET10452666  Lupinus stiversii Mary Susan Taylor 1980-4-18 Taylor 2529 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SD2409  Lupinus torreyi E. B. Copeland 1931-7-3 651 Butte Jonesville; Colby Canyon 1600 Comment
  SEINET10452166  Lupinus vallicola Mary Susan Taylor 1981-5-1 Taylor 3588 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  UCD111665  Luzula comosa Christopher Mallek 2008-1 HW2- 19 Butte Magalia. 756 Comment
  SBBG128007  Luzula comosa L. Ahart 2010-9-21 17203 Butte ca. 50 yards E of the poor dirt rd, ca. 100 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1917 Comment
  CHSC64054  Luzula comosa var. laxa S. C. Morey 1983-8-4 706 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC499136  Luzula macrantha Peter F. Zika 2012-5-16 25533 Butte Mooreville Ridge Road, 0.5 road miles N of dam on Los Creek Reservoir 1020 Comment
  CHSC30511  Luzula macrantha J. D. Jokerst 1980-3-23 489 Butte Along Cherokee Flume. 0.5 mi W of Hwy 70, from its S end of Bridge over West Branch Feather River. Comment
  CHSC32365  Luzula macrantha J. D. Jokerst 1980-4-7 563 Butte E. of jct. of Upper Rocky Honcut Cr., and Swedes Flat Rd., (E of the town of Rackerby) SE of Oroville 10 mi. Comment
  CHSC94067  Luzula macrantha R. Fischer 2005-3-9 745 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from the grassy edge of the riparian zone. 219 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
  CHSC36096  Lycium barbarum Robert A. Schlising; Coleta Lawler 1981-11-28 4223 Butte Richvale Vernal Pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay; on hilltop at site of old orchard. Comment
  JEPS120153  Lycopersicon esculentum Lowell Ahart 2012-10-20 18507 Butte On the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC109786  Lycopus americanus Lowell Ahart 2012-10-20 18511 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC37380  Lycopus americanus R. A. Schlising 1980-8-3 3963 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC42709  Lycopus americanus Lowell Ahart 1987-6-9 5743 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC60993  Lythrum hyssopifolia Lowell Ahart 1993-6-13 6957 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  JEPS98925  Madia citrigracilis Bruce G. Baldwin, Vern Oswald 1988-6-16 716 Butte along Camp Creek Road, near Pulga 512 Comment
  CAS-BOT-BC342719  Madia elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia 1097 Comment
  SEINET3450906  Madia elegans Unknown 2003-6-30 10321 Butte Forbestown, Forbestown, about 2 miles air northwest, east side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  CAS-BOT-BC342715  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  CHSC109772  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC31571  Madia elegans subsp. densifolia L. Ahart 1974-8-14 602 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UCR219267  Madia elegans subsp. densifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15586 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC103979  Madia exigua Lowell Ahart 2010-5-7 16620 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC11829  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  UC436296  Madia gracilis E. B. Copeland 1930-7-24 186 Butte Jonesville 1500 Comment
  SEINET10474816  Madia gracilis Lowell Ahart 1985-5-31 Ahart 5035 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  UCD134277  Madia gracilis L. Ahart 1982-9-13 3826 Butte along dirt road by Pinkard Creek, ca. 1/8 mile north of Lost Creek Reservoir Dam, ca. 2.1 miles northwest of Strawberry Valley. 1100 Comment
  SEINET10474825  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2705 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CAS-BOT-BC345241  Madia subspicata A. A. Heller 1915-5-17 11878 Butte Along Chico Creek 5 miles east of Chico Comment
  RSA0045596  Madia subspicata Lowell Ahart 2012-6-9 18178 Butte On the east side of Guardian Trail, about one mile south of Ten Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 8 miles northeast of Chico. 370 Comment
  UC1442644  Madia subspicata Lowell Ahart 1978-10-29 Butte along the La Porte Rd. 4 mi ne Bangor 350 Comment
  CAS-BOT-BC345234  Madia subspicata Lowell Ahart 1982-5-28 3438 Butte Sutter Buttes Area. Near North Honcut Creek, near the Peter Ahart Ranch, about 1.25 miles north and 3 miles east of Honcut 50 Comment
  CHSC35981  Malacothrix floccifera M. S. Taylor 1982-6-24 4723 Butte E side of Ponderosa Way (Rim Rd), 1.3 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  CHSC69655  Malacothrix floccifera Vernon Oswald; Lowell Ahart 1997-9-9 8859 Butte North of Magalia and 0.4 mi northeast of Coutolenc Rd. on Jordan Hill Rd. to Whiskey Flat. Roadside. 670 Comment
  SEINET10872007  Malacothrix floccifera Lowell Ahart 1984-6-8 Ahart 4670 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC33214  Malvella leprosa R. E. Preston 1981-6-19 96 Butte In and along road, atop levee; ca. 0.8 km s of Headquarters, Grey Lodge State Wildlife Area, ca. 14.5 km ssw of Gridley. 20 Comment
  CHSC65687  Marah fabacea var. agrestis Vernon H. Oswald 1996-3-29 7278 Butte Between ranch road and the slough on the E side of Goodman Opening at the S end of the Riparian Sanctuary. Sacramento River National Wildlife Refuge, Llano Seco Unit. 27 Comment
  CHSC26878  Marah watsonii Robert A. Schlising 1963-5-4 2566 Butte Roadside near Cohasset. 426 Comment
  CHSC28647  Marah watsonii M. S. Taylor 1979-3-20 1960 Butte Along old road on n side of Feather River. Ca. 1/4 mi n of Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC38473  Marrubium vulgare Vernon Oswald 1983-5-2 420 Butte Upper Bidwell Park, Chico, along the s edge of the Golf Course. 91 Comment
  SEINET10834130  Marsilea vestita Mary Susan Taylor 1980-8-15 Taylor 3253 Butte T21N R2E nw sec 36, Hamlin Canyon quad. Pentz vernal pool, 0.4 mi SE of jct of Pentz (Benum) Rd, and Hwy 99, ca. 10 mi S of Chico; Valley Grassland. With E. Pierce. 55 Comment
  CHSC65986  Matricaria occidentalis Vernon H. Oswald 1996-5-9 7545 Butte Sacramento River Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC4668  Meconella californica R. Carter 1966-4-11 341 Butte Found ca. 1/2 mi. E of Bidwell Bar along old R. R. tracks; growing in sandy soil in middle of tracks. 152 Comment
  JEPS115540  Medicago arabica Lowell Ahart 2009-5-15 15712 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UC865635  Medicago arabica A. A. Heller 1915-5-2 11864 Butte hills 12 mi ne Chico (near Rock Creek) Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  JEPS115379  Medicago lupulina Lowell Ahart 2009-6-3 15834 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  CHSC101685  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
  CHSC42526  Medicago polymorpha Lowell Ahart 1987-4-30 5494 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC42527  Medicago polymorpha Lowell Ahart 1987-4-30 5493 Butte On gravel bars along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  RSA32916  Medicago polymorpha A. A. Heller 1923-3-25 13737 Butte Rock Creek Comment
  UCD107828  Medicago polymorpha A. A. Heller 1914-3-7 11186 Butte 8 miles north of Oroville. Comment
  UCD80307  Medicago polymorpha CNPS SN Foothill Team 2005-5-4 SNNR 0016 Butte City of Chico, Upper Bidwell Park, in the flood zone of Chico Creek. 81 Comment
  JEPS95061  Melica aristata Lowell Ahart 1997-8-1 7804 Butte about 6 air mi ne of Stirling City (on s side of the County Road, sw of Keyser Creek, about 1 1/2 mi se of Bald Mountain); County Road 1432 Comment
  CAS-BOT-BC269376  Melica californica Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 miles se of Paradise 500 Comment
  CAS-BOT-BC269386  Melica californica Clarence R. Quick 1964-7-9 64 -64 Butte North of Jarbo Gap Comment
  CHSC8251  Melica californica B. Hamilton 1969-4-17 16 Butte Found near Horseshoe Lake in Bidwell Upper Park. Comment
  RSA712755  Melica californica L. P. Janeway 2005-5-29 8416 Butte Northern High Sierra Nevada. Top of Rocky Ridge towards its southern end; 2.9 km southwest of Pulga. 960 Comment
  CHSC115277  Melica californica var. californica Lowell Ahart 2015-4-30 20122 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. Chaparral. 890 Comment
  CHSC82477  Melica harfordii Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9739 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
  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
  JEPS87139  Melica torreyana Lowell Ahart 1992-5-9 6766 Butte ca. 2 (air) mi. n. Oroville (w. side of small stream, e. of Cherokee Rd., Lake Oroville Recreation Area); Lake Oroville Recreation Area 91 Comment
  CHSC38520  Melilotus indicus Vernon Oswald 1983-5-15 493 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Chico Creek and the flood-control gates. 79 Comment
  CDA30212  Melissa officinalis L. Ahart 2009-7-9 16014 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CHSC102727  Melissa officinalis Lowell Ahart 2009-6-19 15949 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS115150  Mentha arvensis Lowell Ahart 2009-11-19 16543 Butte North of the rose thicket, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  SEINET10498158  Mentha arvensis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 A Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC43838  Mentha pulegium B. Castro 1987-9-8 215 Butte E of the lodge at Richardson Springs resort. 182 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  JEPS115650  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico 68 Comment
  CHSC108793  Micranthes fallax Lowell Ahart 2012-4-9 17841 Butte On the high south cliff edge of Big Chico Creek, northwest of South Rim Trail, south part of Upper Bidwell Park, about 2 1/4 miles (air) northeast of Chico. 161 Comment
  CHSC4656  Micranthes integrifolia R. Carter 1966-3-13 294 Butte Found ca. 6 mi. E of Chico at intersection of Honey-Run Rd. and Humbug Rd. in Butte Cr. Canyon; slope ca. 25 yds. up slope on S side canyon. 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
  CHSC48908  Micranthes odontoloma Vernon Oswald 1987-7-29 3165 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the se/S6. 1752 Comment
  SD2093  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville, sunny swamp 1550 Comment
  CAS-BOT-BC348701  Microseris acuminata Lowell Ahart 1985-4-21 4879 Butte Near Wyandotte Creek, south of Central House Road, north-west of Honcut, about 12 miles south of Oroville 35 Comment
  CAS-BOT-BC348704  Microseris acuminata J. D. Jokerst 1982-4-12 1524 A Butte West edge of Highway 149 3/10 mile north of Highway 70 Comment
  POM53412  Microseris lindleyi E. B. Copeland 1903-4-10 3028 Butte Chico 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
  CHSC34992  Microsteris gracilis R. A. Schlising 1980-6-10 3664 Butte Along Humboldt Road, 1.9 mi NE of jct with Highway 32 at Lomo. Comment
  CHSC43704  Microsteris gracilis Vernon Oswald 1983-6-22 734 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humbolt Rd. to Butte Meadows. 1158 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
  HSC32623  Mimulus angustatus Dave Knorr 1974-4-20 125 Butte On Cherokee Mtn., road about 1 mi. E of Cherokee Comment
  JEPS14976  Mimulus bicolor A. A. Heller 1914-5-17 11338 Butte near Forest Ranch 731 Comment
  JEPS4727  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  UCD89439  Mimulus filicifolius Jason Sexton 2010-5-22 3 Butte East of Oroville, Big Bald Rock area. 932 Comment
  SEINET10570228  Mimulus glaucescens Lowell Ahart 1985-5-15 Ahart 4992 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  JEPS108963  Mimulus guttatus Lowell Ahart 2006-9-13 13322 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  RSA754964  Mimulus guttatus L. Ahart 2008-5-21 14774 A Butte Lake Oroville, north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  RSA795592  Mimulus guttatus Christopher T. Ivey 2010-6-7 374 Butte Honey Run Road, 3.0 km northeast of bridge crossing Butte Creek, in wet meadow and roadside ditch. 165 Comment
  POM252815  Mimulus kelloggii A. A. Heller 1938-4-14 15025 Butte The treeless, undulating plain of Table Mountain. 305 Comment
  UC1564742  Mimulus lewisii V. Oswald and L. Ahart 1989-8-15 3945 Butte 1.2 mi (air) n Philbrook Reservoir (Soda Ridge Rd. 1.4 mi w of its junction with Coon Hollow Rd., between the road and a marshy lake visible from the road) 1780 Comment
  UC886302  Mimulus moniliformis A. A. Heller 1917-7-26 12829 Butte Butte Meadows 1280 Comment
  CHSC4966  Mimulus moschatus R. Carter 1967-7-14 608 Butte Growing along roadside. Comment
  JEPS114717  Mimulus nasutus 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 Comment
  JEPS119684  Mimulus tricolor Lowell Ahart 2012-5-2 17962 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  UC1468291  Mimulus tricolor L. Ahart 1983-6-6 4029 Butte 2.5 mi ne Honcut; Peter Ahart Ranch 50 Comment
  UC625522  Mimulus tricolor Frank W. Gould 1938-4-23 305 Butte two mi n Chico 60 Comment
  RSA535804  Mimulus tricolor David M. Thompson, L. Ahart 1988-3-22 849 Butte N of Honcut. Peter Ahart Ranch (entrance 1.2 mi N of Honcut store along Ahart Road.) 1 mi E of ranch gate, then 0.5 mi N. 35 Comment
  CHSC39770  Minuartia californica Terrie Wilson 1978-10-4 14 Butte N side of Hwy 32, ca. 1.4 mi e jct. Hwy 99 and 32v at Chico. 76 Comment
  CHSC93375  Minuartia californica Lowell Ahart 2006-4-27 12540 Butte Side of a bank, about 100 yards south of the fence and tower, pasture fields, about 4/5 mile north and 1 3/4 miles east of Honcut. 49 Comment
  JEPS117627  Minuartia cismontana Lowell Ahart 2010-5-23 16734 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico 478 Comment
  HSC38025  Minuartia douglasii Thomas W. Nelson, Jane P. Nelson 1976-5-10 2490 Butte Just E of Magalia Comment
  UCD18735  Minuartia douglasii Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 28 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  SEINET10537567  Minuartia douglasii Mary Susan Taylor 1981-5-15 Taylor 3738 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  UCSB46161  Minuartia douglasii Reisentz, Paul 1979-5-13 Butte 0.7 miles W of Lunt Road; from Highway 70 Comment
  CDA3374  Mollugo verticillata L. Ahart 1998-7-1 8029 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC30744  Mollugo verticillata M. S. Taylor 1980-7-6 3052 Butte Ca. 1 mi e of Meridian Rd, ca. 1.25 mi ne of its jct with Hwy 99, ca. 8 mi n of Chico. In drainage of Rock Creek. 67 Comment
  JEPS122251  Mollugo verticillata Lowell Ahart 2014-9-23 19870 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  SEINET11261951  Mollugo verticillata Richard R. Halse 2006-8-2 6979 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Ave.; 0 92 Comment
  UCD99637  Mollugo verticillata A. A. Heller 1914-6-2 11473 Butte 8 miles north of Oroville. Comment
  SEINET10537425  Mollugo verticillata Mary Susan Taylor 1974-10-11 Taylor 331 Butte Along Sacramento River, in vicinity of the washout on River Road, ca. 10 mi W of Chico. Riparian Woodland. 61 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
  SD6873  Monardella breweri subsp. lanceolata R. M. Austin 1883-1 Butte Comment
  CHSC52039  Monardella odoratissima B. Castro; L. P. Janeway, R. A. Schlising 1988-7-30 282 Butte Abundant near top of ridge se of Snow Mtn at top of sw-facing slope above Coon Hollow. 2072 Comment
  CHSC43829  Monardella sheltonii L. P. Janeway 1987-5-20 2072 Butte SE-facing slope above hwy 70 3.5 mi NE of Jarbo Gap. 594 Comment
  CHSC4631  Monardella sheltonii R. Carter 1996-6-15 445 Butte 3/4 mi. S of intersection of 21N40 and Oroville-Quincy Rd. on W side of Oroville-Quincy Rd. 701 Comment
  JEPS108795  Monardella sheltonii Lowell Ahart 2006-6-9 12655 Butte On the east side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CHSC65567  Monardella villosa subsp. villosa R. Banchero 1980-6-5 193 Butte Ca 4.3 mi N of Pinkston Cyn/ Hwy 70 jcn, near bridge on Hwy 70 over Feather River, on road edge above river and near a seep. 426 Comment
  CDA2666  Monochoria vaginalis T. C. Fuller 1976-7-8 20150 Butte Rice Experiment Station, 3 miles north of Biggs. 0 Comment
  CHSC56080  Montia fontana subsp. amporitana L. P. Janeway 1987-4-14 2003 Butte Thermalito Forebay State Park, Oroville. In the lawn. 70 Comment
  CHSC56082  Montia fontana subsp. chondrosperma L. P. Janeway; R. A. Schlising 1988-7-16 3013 Butte Along Willow Creek, 1 mi west of Humbug Summit Road. In moss at seep next to creek. 1798 Comment
  SEINET10572665  Montia linearis Mary Susan Taylor 1981-5-22 Taylor 3801 Butte T23N R4E sw/sw sec 24, Pulga quad. In Flea Valley, ca. 100 ft E of jct of Ponderosa Way and turnoff to Sawmill Peak, ca. 2 ft N of Sawmill Peak Rd, ca. 4 air mi E of Magalia. 3700 ft. 1128 Comment
  UC83795  Montia parvifolia Mrs. R. M. Austin 1883-5-1 45 Butte Little Chico Canyon Comment
  CHSC42398  Muhlenbergia filiformis Lowell Ahart 1987-6-9 5733 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
  CHSC78362  Muhlenbergia filiformis Lowell Ahart 2000-6-29 8548 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  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
  JEPS121900  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. Comment
  UCD86785  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville 1750 Comment
  JEPS116019  Muhlenbergia rigens Lowell Ahart 2009-11-19 16541 Butte East edge of the south part of a meadow, about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 215 Comment
  SEINET10508207  Muhlenbergia rigens Mary Susan Taylor Taylor 992 Butte Bidwell Park, Chico. Comment
  CHSC42763  Myosotis laxa Lowell Ahart 1987-8-3 5848 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC14004  Myosurus minimus T. Manolis 1974-4-23 20 Butte In bed of vernal pool at edge of Hwy 99 at junction of Broyles Rd, ca. 9 mi n of Chico. 60 Comment
  SEINET10536217  Myosurus minimus subsp. apus Mary Susan Taylor 1980-3-28 Taylor 2401 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  SEINET946111  Myriophyllum brasiliense Lowell Ahart 1987-1 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 610 Comment
  SEINET946127  Myriophyllum hippuroides Verne Grant, Herbert L. Mason 1946-1 13014 Butte Canal near big pond on Sacramento Outing Club. Comment
  HSC13474  Myriophyllum spicatum T. F. Newman 1964-4-17 643 Butte SW of Oroville Comment
  JEPS88529  Najas gracillima Vernon H. Oswald and Lowell Ahart 1996-6-22 8093 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River. 32 Comment
  UCR146291  Najas guadalupensis Ellen Dean, Et al. 2001-8-20 852 Butte Biggs UC Field Station; N of town of Biggs, west of jct. of Hwys 99 and 162; north side of Mailton Road, c. 1/8 mi east of jct. with Riceton Hwy; along second N-S running dirt road leading N into rice field, at intersection with first E-W running dirt road, corner of rice field 100 Comment
  CHSC27863  Nassella cernua A. K. Bos 1978-4-24 20 Butte Ca. 10 ft s of Rd, 2.6 mi e on Humbug Rd, 6.6 mi se from Chico. Comment
  CHSC41137  Nassella pulchra R. L. Ondricek-Fallscheer 1983-5-7 165 Butte Ca. 200 yds s of house on plateau at tip of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 170 Comment
  CAS-BOT-BC60377  Nasturtium officinale M. S. Taylor 1982-5-23 4509 Butte South side of Highway 70 at east side of Arch Rock Tunnel, ca. 0.5 mile southwest of Butte-Plumas county line. 487 Comment
  CHSC105179  Navarretia capillaris B. Castro; L. P. Janeway 1999-8-1 1021 Butte Along Scotts John Creek, 0.2 mi N of road connecting Humboldt and Humbug Rds. In narrow meadowy riparian strip in partial shade of white fir and lodgepole pine adjacent to an alder thicket. 1749 Comment
  CHSC36817  Navarretia divaricata D. H. Ikeda 1980-5-26 383 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  SEINET10496822  Navarretia divaricata subsp. vividior Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4729 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
  CHSC102842  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC62777  Navarretia filicaulis B. Castro 1993-7-13 478 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along N side of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  SBBG128717  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CHSC36703  Navarretia intertexta D. H. Ikeda 1980-5-21 384 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  CHSC88062  Navarretia intertexta subsp. intertexta R. D. Fischer 2004-4-4 188 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at n/e end of Disk Golf Course, near connecting tr. to Guardian Trail. Old road bed. 393 Comment
  UC726818  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC71122  Navarretia leucocephala Jan Monelo 1989-4-25 10 Butte 50 yds s of intersection of Broyles Rd and Hwy 99, ca 12 mi n of Chico; rim of drainage, ca 20 yds w of Hwy 99. 106 Comment
  UCSB63717  Navarretia leucocephala Romano, Marci 1986-4-15 Butte junction of Broyles Rd and Hwy 99 11 m N of Chico 68 Comment
  JEPS9647  Navarretia nigelliformis subsp. nigelliformis A. A. Heller 1914-5-14 11402 Butte pastured field near Dry Creek (sw of Pentz) Comment
  UCD169102  Navarretia prostrata Ramona Robison 2013-4-15 23 Butte Clay Pit State Vehicular Recreation Area. In disturbed vernal pool located in main riding area. 41 Comment
  CHSC38605  Navarretia tagetina Vernon Oswald 1983-5-21 510 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  UCD80639  Navarretia tagetina CNPS SN Foothill Team 2005-5-3 SNFN 0198 e Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the preserve gate, and ca. 75 m from the east fence. 85 Comment
  POM74520B  Navarretia tagetina C. C. Bruce 1898-05 1970 Butte Sloughs Comment
  CHSC50992  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UC1562298  Nemacladus interior Lowell Ahart 1990-7-15 6567 Butte about 1.25 mi nw Enterprise Bridge across Lake Oroville (e of Enterprise Boat Launch Area, just below the high water line of Lake Oroville); Lake Oroville 243 Comment
  CHSC31112  Nemophila heterophylla Diane M. Reilly 1980-4-11 7 Butte 20 ft e of creek, ca. 1/2 mi s on dirt road off Big Bend Rd, ca. 2 mi se of Hwy 70, ca. 27 mi n of Oroville. 621 Comment
  CHSC90237  Nemophila heterophylla Thomas M. Scott 1989-4-19 11 Butte Ca. .2 km e of Covered Bridge (over Butte Creek), 10.2 km ese of Chico. 120 Comment
  UC107252  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; near Clear Creek 53 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
  UC76176  Nicotiana glauca H. E. Brown Nov 15 1896-Nov 30 1896 116 Butte near Clear Creek 53 Comment
  UCD137747  Nymphaea odorata G. Douglas Barbe 1975-6-4 2030 Butte between Nelson West Road and Pacific Gas and Electric reservoir, 1/4 mile east of Chico/Butte City Highway. Comment
  UC672088  Odontostomum hartwegii Herbert L. Mason 1927-5-10 3710 Butte n.e. of Oroville (Table Mt., summit of plateau); Table Mt. Comment
  POM110257  Odontostomum hartwegii C. C. Bruce 1897-04 1837 Butte Butte Creek Comment
  SEINET12265274  Odontostomum hartwegii L. S. Rose 1931-1 s.n. Butte Oroville Comment
  JEPS119512  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  JEPS117516  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 0.5 miles east of Chico Canyon Road. 126 Comment
  CHSC47370  Ophioglossum californicum Lowell Ahart 1982-12-1 3900 Butte Joie Osgood Ranch, about 1 mile north-east of Honcut Cemetery, 4 miles north-east of Honcut. 79 Comment
  CHSC30397  Oreostemma alpigenum var. andersonii Diane H. Ikeda 1979-9-2 160 Butte Ca. 8.1 mi NE of junction of Humboldt Rd and Hwy 32 on Humboldt Rd at crossing of Butte Crk. 1463 Comment
  CHSC94508  Oreostemma alpigenum var. andersonii Lowell Ahart 2006-8-15 13182 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
  SD5378  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 Butte Jonesville 1550 Comment
  RSA0059254  Orobanche californica subsp. grayana E. B. Copeland 1938-9-13 s.n. Butte Jonesville. Comment
  RSA0059255  Orobanche californica subsp. grayana Herbert F. Copeland 1930-8-30 1380 Butte Jonesville. From same plot as no.1019. 1524 Comment
  RSA0087776  Orobanche fasciculata Herbert F. Copeland 1931-6-10 1557 Butte Jonesville. Ridge between Willow and Colby Creeks. 1676 Comment
  SEINET10500395  Orobanche fasciculata var. franciscana Lowell Ahart 1985-5-10 Ahart 4961 Butte 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, about 2 1/2 miles north-east of Oroville Dam. Comment
  CAS-BOT-BC500244  Orobanche uniflora subsp. occidentalis Lowell Ahart 1980-5-29 2359 Butte Sierra Nevada: 5 mi NE of Mountain House 1100 Comment
  CDA42032  Orobanche uniflora subsp. occidentalis H. K. Wagnon 1957-4-28 712 Butte About five miles north of Oroville on road to Cherokee. 0 Comment
  RSA0006076  Orthocarpus brownii A. A. Heller, H. E. Brown 1902-5-6 5459 Butte Berry Canyon (near Clear Creek). Comment
  SEINET4856147  Orthocarpus brownii Unknown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek). Comment
  SEINET10549654  Orthocarpus campestris Mary Susan Taylor 1979-5-6 Taylor 1999 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  SEINET10549699  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-18 Taylor 2533 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SEINET12334059  Orthocarpus pusillus R. A. Schlising 1981-1 4014 Butte along Hwy 70 S of Oroville, 0.2 mi S of jct with Cox Lane Comment
  CAS-BOT-BC254365  Oryza sativa G. P. Rixford 1914-9-4 s.n. Butte Biggs Comment
  CHSC21007  Oxalis corniculata M. S. Taylor 1975-4-6 438 Butte In lawn, e side of 1200 block of Arcadian, Chico. 60 Comment
  JEPS121894  Oxalis corniculata Lowell Ahart 2014-11-24 19920 Butte About 10 feet below the high water line of Lake Oroville, about 500 yards east of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. Comment
  CHSC44306  Oxalis laxa Lowell Ahart 1988-4-30 5973 Butte Along the west side of North Honcut Creek, on the Joie Osgood Ranch, about 1 and 3/4 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC3308  Oxalis rubra M. Gregg 1966-4-13 67 Butte Corner of 20th and Salem Streets in Chico. In flower garden. Comment
  HSC73009  Oxypolis occidentalis M. S. Taylor, L. Ahart 1981-8-15 4193 Butte N side of Coon Hollow Rd (26N74), 1.2 mi. E of its junction with Humbug Rd., 12 mi. NE of Stirling City 1677 Comment
  SEINET10454540  Oxypolis occidentalis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4193 Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  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
  SEINET11805350  Packera eurycephala var. lewisrosei W. Knight, Knight, I. 1981-1 4115 Butte along Feather River Highway near Pulga Comment
  JEPS110194  Packera subnuda Lowell Ahart 2006-7-16 12978 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC28619  Panicum acuminatum M. S. Taylor 1979-10-3 2218 Butte In Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CDA13901  Panicum acuminatum var. acuminatum G. F. Hrusa, T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC31630  Panicum acuminatum var. acuminatum L. Ahart 1974-6-24 500 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  RSA29937  Panicum capillare I. L. Wiggins 1928-9-9 3339 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC78171  Parentucellia viscosa Lowell Ahart 2000-5-23 8385 Butte In a seepy area along a large wash, northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  UC830990  Parvisedum pumilum A. A. Heller 1914-4-27 11329 Butte along Chico-Oroville Road on the lava plains 6 mi from Chico; Chico-Oroville Road Comment
  SEINET12216577  Parvisedum pumilum A. R. Shepard 1981-1 12 Butte T23N, R1W, Sec. 4 NE quarter, ca 15 mi N of Chico and 900 ft W of Singer Creek; 58 Comment
  CHSC6744  Paspalum dilatatum V. Hagaman 1968-6-1 581 Butte Corner of 2nd street and Chestnut, Chico. Comment
  CHSC37660  Paspalum distichum T. B. Devine 1981-9-3 764 Butte At edge of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC103679  Pectocarya pusilla Lowell Ahart 2010-4-30 16595 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
  CHSC28139  Pectocarya pusilla Robert A. Schlising 1979-4-4 3352 Butte Northeast of Chico, along Skyway (hwy to Paradise). 243 Comment
  RSA4461  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  CHSC97737  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  POM120723  Pellaea andromedifolia C. C. Bruce 1897-04 1864 Butte Butte Creek Comment
  CAS-BOT-BC67599  Pellaea mucronata Lowell Ahart 1983-3-28 3912 Butte Near the Forbestown Res., in a dry open area above the road and on the east side of Woodleaf Creek, 450 Comment
  CHSC30367  Pellaea mucronata J. D. Jokerst 1979-3-20 1151 Butte Top of North Table Mt, W edge at the waterfalls of the S branch of Coal Cr. Canyon. 365 Comment
  CHSC38249  Pellaea mucronata Vernon Oswald 1982-12-19 26 Butte Bidwell Park, Chico, on the north rim at the level of Horseshoe L. 164 Comment
  CHSC39232  Pellaea mucronata M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5216 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  SEINET10931288  Penstemon azureus subsp. angustissimus Mary Susan Taylor 1981-5-11 Taylor 3688 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  NY571128  Penstemon azureus var. angustissimus D. D. Keck 1928-6-16 451 Butte 1.5 miles south of Berry Creek Inn 609.6 Comment
  CHSC92734  Penstemon azureus var. azureus L. P. Janeway 2005-6-26 8429 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  JEPS108825  Penstemon azureus var. azureus Lowell Ahart 2006-5-10 12618 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga 354 Comment
  UC177597 Image available Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte near Chico; Richardson Springs; Richardson Springs, near Chico, Butte Co. 152 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  UCD124218  Penstemon heterophyllus L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC63930  Penstemon heterophyllus var. purdyi Larry A. Stauffer 1990-4-22 28 Butte About 310 feet north-west of north end of Horseshoe Lake. Upper Bidwell Park, about 5 miles north-east of Chico, 0.5 mile east-north-east from park entrance. 76 Comment
  CHSC94061  Penstemon heterophyllus var. purdyi R. D. Fischer 2005-6-12 738 Butte Sierra Nevada foothills, off Hwy. 32, about 3 miles east of Chico at theeast end of Humboldt trailhead in Bidwell Park. Roadside collection. 407 Comment
  CHSC44699  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 291 Butte Along County Line Rd 0.2 mi W of its jct with Golden Trout Crossing, 0.7 mi E of Camp 18. 1272 Comment
  POM195084  Penstemon laetus var. leptosepalus D. D. Keck 1930-7-25 981 Butte 4 miles W of Forbestown. 762 Comment
  SFV10338  Penstemon laetus var. leptosepalus M. L. Vincent 1963-6-8 400 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  JEPS94299  Penstemon neotericus Lowell Ahart 1997-8-1 7771 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, on the w side of Little Kimshew Creek, Snow Meadow); Snow Meadow, Little Kimshew Creek 1524 Comment
  NY627284  Penstemon neotericus E. B. Copeland 1929-7-13 456 Butte Jonesville 1650 Comment
  UC600436  Penstemon neotericus H. F. Copeland 1930-7-26 1378 Butte rocky point above hotel (Jonesville); Jonesville 1676 Comment
  CHSC11884  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte Jonesville. 579 Comment
  UC725651  Penstemon newberryi var. newberryi A. A. Heller 1942-5-8 16445 Butte Feather River Hwy, a few feet from the Plumas Co. line Comment
  CHSC31035  Penstemon rydbergii M. S. Taylor; R. A. Schlising 1980-7-6 3086 Butte N side of Old Humboldt Rd, just w of Butte Meadows Ranger Station. 1341 Comment
  CHSC44729  Penstemon rydbergii R. Banchero 1980-6-26 266 Butte Chico Meadows, 0.95 mi N of the jct of Humboldt Rd and the Skyway. 1316 Comment
  CHSC39772  Pentagramma triangularis Richard K. McGaugh 1979-4-7 6 Butte Sec. 20 , Table Mt., ca. 120 m. w. of Cherokee Rd., 5.65 km. n. of Oroville. 457 Comment
  CHSC28898  Pentagramma triangularis subsp. semipallida M. S. Taylor 1979-5-4 1996 Butte Along Millsap Bar Rd, ca. 4 mi ne of its jct with Bruch Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC33559  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-5 3603 Butte On e side of Lumpkin-Laporte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 mi e of Oroville. 457 Comment
  CHSC42504  Pentagramma triangularis subsp. semipallida Lowell Ahart 1987-5-12 5637 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  JEPS108137  Pentagramma triangularis subsp. semipallida Lowell Ahart 2005-11-12 12482 Butte Steep road cut on the east side of Dark Canyon Road, south of the large parking area, south of the gate, end of Dark Canyon Road, about 3 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  JEPS113226  Pentagramma triangularis subsp. triangularis Lowell Ahart 2007-5-16 13888 Butte On the west side of Jordon Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir 436 Comment
  UC1312887  Perideridia bolanderi subsp. involucrata Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3778 Butte road to Magalia 1.8 mi n Pentz Store 137 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  UC1312881  Perideridia oregana Lincoln Constance and Tsan-Iang Chuang 1967-6-21 3777 Butte Feather River Hwy 5.7 mi se Pentz Store (ca 10 mi n of Oroville) 152 Comment
  SEINET10454555  Perideridia parishii subsp. latifolia Mary Susan Taylor 1978-7-19 Taylor 1788 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  CHSC55244  Persicaria hydropiperoides Lowell Ahart 1991-10-14 6715 Butte On the sides of a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CAS-BOT-BC418952  Persicaria lapathifolia Lowell Ahart 1981-8-15 3041 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC76004  Persicaria lapathifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8174 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  HSC104005  Persicaria lapathifolia L. Ahart 2013-11-17 19262 Butte About 5/8 mi. SW of the Enterprise Bridge across Lake Oroville, below the high water line of Lake Oroville, along the sides of McCabe Creek 245 Comment
  CHSC94487  Persicaria maculosa Lowell Ahart 2006-8-29 13236 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
  CAS-BOT-BC419176  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte Hills 8 miles north of Oroville Comment
  CHSC38297  Petrorhagia dubia Vernon Oswald 1983-3-14 184 Butte Upper Bidwell Park, Chico, on the north rim ca. 1500 ft w of the power lines. Along the edge of a jeep trail. 195 Comment
  CHSC96551  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CHSC83956  Phacelia distans Lowell Ahart 2003-4-8 10045 Butte About 40 yards and in the canyon west of the tall Digger Pine on the south edge of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 314 Comment
  CHSC118390  Phacelia egena Tim Kask 2015-2-18 225 Butte Antelope Creek, upstream from Fischer CG. 10T 0595755/4455054 Comment
  POM73733  Phacelia egena C. C. Bruce 1897-05 1978 Butte Little Chico. Comment
  SEINET10497011  Phacelia heterophylla subsp. virgata Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4722 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
  RSA134087  Phacelia mutabilis L. R. Heckard 1952-6-20 320 Butte Canyon of the Feather River, about 2 miles above (northeast of) Pulga. Comment
  CHSC39123  Phacelia purpusii R. Schlising 1980-6-2 3619 a Butte NE of Forest Ranch along Hwy 32. Comment
  UC1187650  Phacelia purpusii Lincoln Constance, Elwood Molseed, John Weiler 1960-6-12 3677 Butte three mi above junction of Highway 32 and Butte Meadows road (33 min ne of Chico) 1219 Comment
  CHSC11967  Phacelia racemosa E. B. Copeland 1931-7-12 684 Butte Jonesville. On bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CHSC60987  Phacelia vallicola Lowell Ahart 1993-6-20 6989 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10660062  Phalaris aquatica Prouty 1980-4-28 PROUTY 8093 Butte Jctn Hwy 70 & Pentz-Magnolia Hwy. Ruderal habitat. T21N, R4E, Sec. 29, NW1/4 232 Comment
  CHSC91099  Phalaris paradoxa Lowell Ahart 2005-5-28 11828 Butte Pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  JEPS117537  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 265 Comment
  JEPS95866  Phalaris paradoxa Lowell Ahart 1999-5-21 8068 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  SEINET10716717  Phalaris paradoxa A. Arthur Heller 1919-8-13 Heller 13352 Butte Rice fields between Nelson and Richvale in moist adobe Comment
  CHSC37653  Philadelphus lewisii T. B. Devine 1981-8-25 755 Butte Beside Hwy 70 near Bear Creek Ranch, along N Fork of Feather River near Cresta. 426 Comment
  CHSC43205  Phleum pratense Robert Banchero 1981-7-19 612 Butte Big Crane Valley. Meadow. 1584 Comment
  CHSC59053  Phleum pratense Lowell Ahart 1992-8-2 6904 Butte In Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  CHSC11949  Phlox diffusa E. B. Copeland 1931-6-19 683 Butte On and below crags of 'the Summit. 2100 Comment
  SD1138  Phoradendron juniperinum E. B. Copeland 1931-7-28 627 Butte Jonesville 1500 Comment
  CHSC103145  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  RSA754529  Phoradendron macrophyllum L. Ahart 2009-8-3 16255 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) W of Hwy 32, about 10 miles NE of Chico. 210 Comment
  SEINET10936355  Phoradendron villosum Mary Susan Taylor 1981-1-5 Taylor 3373 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC49440  Physalis philadelphica Vernon Oswald 1987-7-23 3144 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CAS-BOT-BC140565  Physocarpus capitatus Lowell Ahart 1982-6-1 3526 Butte About 1/2 mile south-west of the intersection of Black Bart Road and Forbestown Road, west of Forbestown 750 Comment
  SEINET11892048  Physocarpus capitatus Unknown 1981-1 2921 Butte ca.1/2mi W of Oroville Forbestown Rd, on S side of Black Bart Rd 640 Comment
  SEINET10537237  Phytolacca americana Lowell Ahart, Vernon H. Oswald 1985-7-24 Ahart 5159 Butte Along a small stream, along La Porte Road, about 4 miles north-east of Bangor. Comment
  CHSC27052  Pilularia americana Lowell Ahart 1978-5-1 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10470796  Pilularia americana Lowell Ahart 1983-6-6 Ahart 4032 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  RSA0111916  Pinus contorta var. murrayana H. F. Copeland 1926-3-27 207 Butte Jonesville. 1220 Comment
  CHSC61020  Pinus halepensis Vernon H. Oswald 1993-7-29 5738 Butte Gray Lodge Wildlife Management Area W of Gridley, along the return leg of the Tour Route, W of the headquarters complex 19 Comment
  UC398883  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  NY61631  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  CHSC26656  Pinus monticola M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1499 Butte On s side of Humbug Rd, ca. 13 mi s of its jct with Scott's John Rd, above Snag Lake. 1828 Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  SEINET10872490  Piperia elegans Mary Susan Taylor 1977-6-25 Taylor 1388 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CAS-BOT-BC136583  Piperia leptopetala Chester Dudley 1940-6-1 s.n. Butte Field redacted by CAS, contact the data manager for more information Comment
  CHSC61359  Piperia transversa Lowell Ahart 1993-7-22 7070 Butte On the east side of the dirt road, about 1/4 mile north-west of Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  CHSC108965  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17862 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12, Lower Bidwell Park, Chico. 65 Comment
  CHSC43586  Pistacia atlantica Vernon Oswald 1987-4-29 2358 Butte Chico Tree improvement Center (former USDA Plant Introduction Station ) in se Chico. 68 Comment
  UC2026874  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18202 -A Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10529839  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1991 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
  UCD73067  Plagiobothrys austiniae 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
  CHSC46250  Plagiobothrys bracteatus Vernon Oswald 1989-4-19 3739 Butte Wurlitzer Unit, Vina Plains Preserve. Along the upper s bank of Pine Creek just downstream from the mouth of Singer Creek. Also in other pools between Pine and Singer Creeks. 57 Comment
  CHSC46760  Plagiobothrys fulvus var. campestris Lowell Ahart 1977-5-2 1340 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC29275  Plagiobothrys glyptocarpus R. A. Schlising 1980-4-7 3556 Butte NE of Bangor, ca 1.1 mi NE junction of Ord-Bangor Hwy, along LaPorte Road. Streamside. Comment
  CHSC47999  Plagiobothrys glyptocarpus var. glyptocarpus Vernon Oswald 1986-4-14 1068 Butte Upper Bidwell Park, Chico, on the edge of the first seep s of Upper Park Rd. and w of Parking Area O. 182 Comment
  CAS-BOT-BC228252  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte W slope of Sierra Nevada at Chico Meadows 1219 Comment
  JEPS120653  Plagiobothrys hispidulus Lowell Ahart 2013-10-26 19209 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  SEINET10497551  Plagiobothrys leptocladus Mary Susan Taylor 1982-4-28 Taylor 4349 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
  CHSC116711  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about1 3/4 miles northand 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC46762  Plagiobothrys nothofulvus Lowell Ahart 1980-4-30 2123 Butte About 1 mile east of the Bangor Oroville Highway along Swedes Flat Road, north of Bangor. 295 Comment
  CHSC54361  Plagiobothrys nothofulvus M. Bailey 1991-3-30 558 Butte Butte College campus, in foothills n of Well #2, ca 1000 ft n of Butte Campus Drive. 106 Comment
  JEPS124228  Plagiobothrys nothofulvus Lowell Ahart 2015-3-27 19969 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north Oroville. Comment
  SEINET10497610  Plagiobothrys scriptus Lowell Ahart 1983-4-10 Ahart 3918 Butte Ca. l mi ne of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC46252  Plagiobothrys shastensis Vernon Oswald 1989-3-30 3728 Butte Upper Bidwell Park, Chico. Along the North Rim Trail between Lookout Point above Horseshoe Lake and the double set of power lines. 182 Comment
  SEINET10497612  Plagiobothrys stipitatus Mary Susan Taylor 1978-4-14 Taylor 1566 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
  CHSC31255  Plagiobothrys stipitatus var. micranthus R. A. Schlising 1980-4-20 3571 Butte Between Singer Creek and Cana-Pine Creek Road; in vernal pool. 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
  JEPS105901  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  JEPS107765  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
  CHSC101311  Plagiobothrys tenellus Lowell Ahart 2009-4-22 15571 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
  SEINET10497556  Plagiobothrys tenellus Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4290 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC40445  Planodes virginica Lowell Ahart 1985-3-14 4846 Butte Around vernal pools, in one of the pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  SEINET10499842  Plantago bigelovii Mary Susan Taylor 1978-4-14 Taylor 1550 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
  CHSC103945  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC42070  Plantago coronopus Kevin Lund 1986-4-15 16 Butte Ca. 13 mi n of Chico on Hwy. 99. Comment
  CHSC45342  Plantago coronopus Vernon Oswald 1985-4-11 1706 Butte Beside a gravel road at the shooting area in the Oroville Wildlife Area. Comment
  CHSC28636  Plantago erecta M. S. Taylor 1979-3-31 1974 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  UC1125626  Plantago erecta J. E. Sowder 1933-6-20 88 Butte 1.5 mi s Yankee Hill; Chico Quad. 457 Comment
  UC171664  Plantago erecta Mrs. R. M. Austin Apr 1896 248 Butte Little Chico Creek Comment
  UC195449  Plantago erecta A. A. Heller 1914-4-14 11288 Butte 8 mi n Oroville Comment
  RSA590213  Plantago erecta Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7228 Butte North Table Mountain, W of Cherokee Rd. N of Oroville. S side of Beatson Hollow, from center to west edge of butte. Comment
  CHSC41313  Plantago lanceolata S. C. Morey 1983-7-22 549 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  RSA754384  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yds north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yds east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  CHSC113388  Plantago major Lowell Ahart 2014-7-2 19548 Butte On the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  JEPS118034  Plantago virginica Lowell Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville 58 Comment
  JEPS94565  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  SEINET4890922  Platanus racemosa R. McKee 1909-1 s.n. Butte Chico Comment
  CHSC39417  Platystemon californicus J. D. Jokerst. 1984-4-7 1966 Butte Table Mountain. Ca 100 meters south of the creek that flows into the south fork of Coal Creek Cayon. Comment
  CHSC109099  Plectritis ciliosa Lowell Ahart 2012-3-23 17791 Butte On and around a large rock outcrop, about 200 yards east of Big Chico Creek, about 200 yards west of Ten MIle House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  CHSC1991  Plectritis ciliosa M. Davidson 1929-3-23 Butte Chico Canyon bluffs. 152 Comment
  CHSC70843  Plectritis ciliosa subsp. insignis Vernon Oswald 1998-3-16 8889 Butte Jeep Trail skirting north boundary Upper Bidwell Park between Hwy. 32 and Big Chico Creek. 292 Comment
  CHSC2457  Plectritis macrocera R. Carter 1965-3-13 159 Butte Found on North Table Mt. ca. 27 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  JEPS119792  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC726298  Plectritis macrocera A. A. Heller 1938-4-14 15026 Butte summit of Table Mountain Table Mountain 304 Comment
  POM132103  Pleuricospora fimbriolata Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC458153  Pleuricospora fimbriolata Lowell Ahart 1985-7-16 5148 Butte 4 miles E of Cherry Hill, south of Willow Creek, about 100 meters SW of the Section Corner of Sections 17, 16, 20, and 21, about 4 miles E of Cherry Hill, about 7 miles NE of Butte Meadows 1828 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
  SEINET10968188  Poa bolanderi Mary Susan Taylor 1978-7-19 Taylor 1777 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CHSC50854  Poa cusickii subsp. epilis Vernon Oswald; Lowell Ahart 1990-7-19 4371 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  CHSC54311  Poa howellii Vernon H. Oswald; Lowell Ahart 1991-6-5 4643 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek on the west side of Hwy 32, ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. Roadside banks. 670 Comment
  CHSC83100  Poa pratensis P. Moyer 1972-4-16 189 Butte CSUC Campus. S bank of Chico Ck. between Warner St. and New Dorm Bridge. 60 Comment
  UCD91924  Poa pratensis L. Y. Leonard 1919-6-1 x 3090 Butte Chico. Comment
  SEINET10659840  Poa pratensis Lowell Ahart 1987-5-6 Ahart 5560 Butte On dry sand, 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
  SEINET9349748  Poa pratensis Unknown 1931-6-22 606 Butte Butte Comment
  CHSC30517  Poa secunda subsp. secunda N. E. H. Prouty 1980-4-5 106 .2 Butte Field east side of Cohasset Rd., ca. 1/2 mi. north of the Chico Airport turnoff. 86 Comment
  CHSC35987  Poa secunda subsp. secunda J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1561 Butte Slope adjacent to road to Forbestown Resv. just S of the S. Fork of the Feather River. Comment
  HSC41104  Poa tenerrima J. P. Smith, J. O. Sawyer 1973-4-14 6055 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  SD111908  Pogogyne zizyphoroides B. Ertter, Jeff Strachan 1980-5-5 3249 Butte Peter Ahart Ranch, ca. 1.5 miles northeast of Honcut between Oroville and Marysville. 29 Comment
  RSA0022166  Pogogyne zizyphoroides L. S. Rose 1963-6-5 6314 Butte 3 mi. w of Palmero 46 Comment
  SEINET12320807  Pogogyne zizyphoroides E. C. Taylor 1975-1 39 Butte Ca 10yds W of Cohasset Hwy. opposite the Chico Municipal Airport, 2.7 mi N of Chico 76 Comment
  CHSC88060  Polanisia dodecandra subsp. trachysperma R. D. Fischer 2004-5-30 186 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. UTM: 10617204E 4409342N. 620 Comment
  CHSC27706  Polemonium pulcherrimum Robert A. Schlising; Marc P. Hayes 1978-6-24 3290 Butte Probably just within Butte County line on summit of Humboldt Peak. 2133 Comment
  JEPS115319  Polycarpon tetraphyllum Lowell Ahart 2009-5-8 15657 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC167556  Polygala cornuta var. cornuta Chester Dudley 1940-6-1 s.n. Butte Near Magalia Comment
  RSA726857  Polygala cornuta var. cornuta L. Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the both sides of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road., About 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 686 Comment
  CHSC104807  Polygonum bidwelliae Lowell Ahart 2010-6-1 16763 Butte On dry poor bare soil, on the south side of Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 1/2 miles (air) east of Chico. 120 Comment
  CHSC85423  Polygonum bidwelliae John Dittes 1992-5-5 473 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  UCD80668  Polygonum bidwelliae CNPS SN Foothill Team 2005-5-5 SNFN 0157 d Butte City of Chico, Upper Bidwell Park, about 200 m northwest of the road running through the park, about 1/2 mile up the road from Horseshoe Lake. 111 Comment
  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
  CAS-BOT-BC414367  Polygonum californicum Lowell Ahart 1974-10-18 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  CAS-BOT-BC414368  Polygonum californicum Lowell Ahart 1981-11-6 3216 Butte Peter Ahart Ranch, Honcut 50 Comment
  POM219181  Polygonum davisiae H. F. Copeland 1928-8-29 345 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  UC1586531  Polygonum hydropiperoides Lowell Ahart 1991-9-14 6716 Butte about 2 mi e Honcut (sides of a large reservoir); Joie Osgood Ranch 45 Comment
  CDA22816  Polygonum lapathifolium L. Ahart 2002-10-17 9992 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  CHSC11917  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville. On shaded gravel bars by Butte Creek. 1500 Comment
  CHSC24813  Polygonum persicaria E. L. Rilla 1976-9-18 31 Butte .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  JEPS108976  Polygonum persicaria Lowell Ahart 2006-9-11 13290 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  POM183168  Polygonum phytolaccifolium H. F. Copeland 1930-7-21 1326 Butte Jonesville. 1524 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
  SEINET10479784  Polygonum scabrum Mary Susan Taylor 1978-7-22 Taylor 1852 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  UC122768  Polypodium Mrs. R. M. Austin Mar, 1896 237 Butte Little Chico Canyon Comment
  CAS-BOT-BC71869  Polypodium californicum J. D. Jokerst; M. S. Taylor 1980-2-14 0439 Butte adjacent to MacCabes Cr, ca. 200 meters east of jct McCabes Cr and Lumpkin Rd. Comment
  CHSC24893  Polypodium calirhiza T. F. Burnham 1976-4-19 19 Butte Ca. 20 ft s of Butte Creek and 0.4 ft w of Covered Bridge, 6.4 mi e of Chico. 115 Comment
  CHSC50015  Polypodium calirhiza Lowell Ahart 1990-3-19 6419 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. Comment
  CHSC97736  Polypodium calirhiza Lowell Ahart 2007-11-3 14549 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  UC150454  Polypodium calirhiza Dr. E. B. Copeland 1902-12-29 2749 Butte Chico Canyon 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
  CAS-BOT-BC233060  Polypogon interruptus Lowell Ahart 1983-6-15 4057 Butte Banks of N Honcut Creek, Peter Ahart Ranch, about 1.5 miles N and 3 miles E of Honcut 50 Comment
  CDA31992  Polypogon interruptus L. Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. Comment
  CHSC113205  Polypogon interruptus Lowell Ahart 2014-4-16 19369 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC47631  Polypogon interruptus Lowell Ahart 1977-6-3 1400 Butte At the water hole, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  UC1562415  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  UCD169390  Polypogon interruptus Lowell Ahart 2005-4-14 11720 Butte North of Spruce Street, Gridley; about 200 feet east of the railroad tracks. 28 Comment
  UCD51660  Polypogon interruptus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  CHSC71270  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte On the bottom and sides of a wash, 20 yards south of a east west fence, at a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  UCD91194  Polypogon maritimus A. A. Heller 1914-5-13 11398 Butte Low adobe places near Butte creek between Durham and Nelson. Comment
  CHSC39348  Polypogon monspeliensis Lowell Ahart 1983-6-26 4150 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC116276  Polystichum californicum Lowell Ahart 2015-10-24 20585 Butte On the east side of Big Chico Creek, about 40 yards west of 10 Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  CHSC90203  Polystichum imbricans subsp. curtum Lowell Ahart 2005-1-20 11474 Butte On the west side of McCabe Creek, above the high water line of Lake Oroville, about 1/4 mile south of the siphon, about 3 miles (air) northeast of Hurleton, about 7 miles (air) east of Oroville Dam. 304 Comment
  UC1101393  Portulaca oleracea Malcolm A. Nobs, S. Galen Smith 1949-7-29 1087 Butte on road from Biggs to Princeton (Butte Creek); Butte Creek Comment
  JEPS117907  Potamogeton berchtoldii R. A. Schlising & A. Kannely 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake; in Summit Lake 1889 Comment
  SEINET10501686  Potamogeton crispus Mary Susan Taylor 1979-10-2 Taylor 2216 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC8774  Potamogeton gramineus S. Chulasmai 1966-4-15 11 Butte Lanniger Rd. (up to northern Chico). Stream, lake. Comment
  CHSC11798  Potamogeton pusillus var. tenuissimus E. B. Copeland 1931-7-20 604 Butte Jonesville. 1650 Comment
  CHSC1573  Potentilla glandulosa G. Herrington 1930-4-11 Butte Centerville road. 182 Comment
  CHSC44166  Potentilla gracilis var. fastigiata V. Oswald; L. Ahart 1988-7-26 3618 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  CHSC69050  Potentilla gracilis var. fastigiata Lowell Ahart 1997-8-3 7773 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC105953  Proboscidea lutea Lowell Ahart 2010-9-24 17238 Butte Near the east edge of the Golf Course, about 10 yards north of the footbridge, northeast of the Golf Club House, on the north side of Big Chico Creek, Bidwell Park. 94 Comment
  CHSC110110  Prunus cerasifera L. P. Janeway 2012-5-2 10815 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  JEPS120058  Prunus cerasifera Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17852 Butte Just east of the Deer Pen, near Table 10, Lower Bidwell Park, Chico. Comment
  CHSC94091  Prunus subcordata R. Fischer 2005-3-20 682 Butte Chico. Collected from Bidwell Park off of Pine Trail ca. 1/4 mi downhill from hwy 32. Shrubs growing on brushy north facing slope with an overstory of Big Leaved Maple. 426 Comment
  POM89316  Prunus subcordata C. C. Bruce 1897-05 1813 Butte Butte Creek. Comment
  CHSC1586  Prunus virginiana var. demissa M. Davidson 1929-2-24 Butte Butte Creek. Comment
  CAS-BOT-BC361741  Psilocarphus brevissimus var. brevissimus Lowell Ahart 1980-5-4 2160 Butte Thermalito 65 Comment
  CHSC43628  Psilocarphus brevissimus var. brevissimus Vernon Oswald 1987-6-23 3031 Butte High Lakes Rd. 5.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CAS-BOT-BC361825  Psilocarphus oregonus Lowell Ahart 1983-6-6 4033 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CAS-BOT-BC361829  Psilocarphus oregonus E. B. Copeland 1931-7-20 s.n. Butte Jonesville. Near Butte Creek House 1700 Comment
  CHSC28826  Psilocarphus oregonus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 418 Butte Top of north Table Mt, ca 1.0 mi n of Cherokee Rd (at e edge of Mt). Below high water mark of vernal pools. 381 Comment
  JEPS120953  Psilocarphus tenellus Lowell Ahart 2013-4-20 18555 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC70975  Psilocarphus tenellus var. tenellus Vernon Oswald 1998-5-6 8989 Butte Upper Bidwell Park (new addition), South Rim Trail ca. 0.25 mi west of Pine Trail. 396 Comment
  SEINET10841185  Psoralea orbicularis Lowell Ahart 1985-7-24 Ahart 5150 Butte East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. Comment
  CHSC32685  Pteridium aquilinum var. pubescens M. S. Taylor; L. Hanson 1981-3-31 3451 Butte SE side of Spur rd, ca. 3/4 mi n of its jct with Ponderosa Way, ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville. 822 Comment
  CAS-BOT-BC27144  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville 1550 Comment
  CHSC47637  Puccinellia simplex Lowell Ahart 1982-4-29 3396 Butte Near the dirt road, about 3/4 mile west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley. 30 Comment
  CHSC30055  Pyrola aphylla K. R. Stern 1979-6-29 Butte Jas. Moak Property. Parkhill, 1.5 mi S. of Jarhoe Gap. 594 Comment
  SBBG5360  Pyrola aphylla H. and M. Dearing 1938-6-21 2057 Butte 21 mi NE of Chico Comment
  UC600605  Pyrola asarifolia E. B. Copeland Jul 1929 Butte Jonesville 487 Comment
  CHSC94168  Pyrola dentata Lowell Ahart 2006-6-24 12855 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  SEINET10973482  Pyrola picta Lowell Ahart 1985-6-17 Ahart 5052 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  RSA134789  Quercus berberidifolia Percy C. Everett, E. K. Balls 1959-10-20 23907 Butte 8.6 miles ne. from Chico along State Hwy. 32, toward De Sabla. 488 Comment
  UCD162814  Quercus berberidifolia D. O. Burge 2015-3-16 1686 Butte Butte Creek watershed, below Doe Mill Ridge. 243 Comment
  POM106268  Quercus chrysolepis C. C. Bruce 1898-05 1805 Butte Forest Ranch Comment
  CHSC46974  Quercus chrysolepis var. nana Vernon H. Oswald 1989-8-9 3930 Butte Logging Rd (G-Line) paralleling Butte Creek, 0.8 mi sw of Humboldt Rd, ca. 1.5 mi (air) sw of Butte Meadows. 1310 Comment
  CAS-BOT-BC86635  Quercus douglasii Lowell Ahart 1981-7-7 2919 Butte About 0.5 mi W of the Oroville Forbestown Road on the Black Bart Road, W of Forbestown 700 Comment
  CHSC110993  Quercus ilex Lowell Ahart; L. Hanson, S. Bazell, J. Guardino,W. Dempsey 2012-6-7 18175 Butte On the south side of the paved park road, south of Table 35, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC627  Quercus lobata J. Foster 1928-4-25 Butte Bidwell Park. 60 Comment
  POM106177  Quercus wislizeni C. C. Bruce 1897-05 1798 Butte Forest- Ranch. Comment
  CHSC48694  Ranunculus alismifolius var. alismellus Vernon Oswald 1984-6-11 1281 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. Edge of meadow. 1414 Comment
  CHSC52463  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 331 Butte N part of county, ca. 0.9 mi w of Cherry Hill; in stream. 1414 Comment
  CHSC52121  Ranunculus arvensis John Lowrie 1979-4-26 Butte S. of the Skyway, 4 mi w. of Paradise. Comment
  RSA299449  Ranunculus arvensis J. P. Smith 1974-4-20 7344 Butte Skyway Drive, 1 miles E of Hwy 99. 61 Comment
  CHSC1477  Ranunculus canus Garnett; Durbrow 1928-2-19 Butte Richardson Springs road. Comment
  RSA739981  Ranunculus canus Carol W. Witham, Jennifer Buck 2001-4-10 2001 -38 Butte One mile eaast of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC46790  Ranunculus cymbalaria var. saximontanus R. Schlising 1987-9-27 4545 Butte Along N. Fork Feather River, ca 1.25 mi S of crossing of Bear Ranch Creek by Hwy 70. 463 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
  UC204953  Ranunculus hebecarpus A. A. Heller 1914-3-26 11232 Butte Canyon of Big Chico Creek 76 Comment
  RSA126011  Ranunculus occidentalis var. ultramontanus E. K. Balls 1957-5-22 22518 Butte SW shore, Lake Almanor, W of Big Meadows Dam, 1402 Comment
  UC204960  Ranunculus orthorhynchus var. orthorhynchus A. A. Heller 1914-6-22 11491 Butte Chico Meadows Sierra Nevada 1219 Comment
  RSA0111937  Ranunculus pusillus Lowell A. Ahart 2015-5-5 20139 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  JEPS87196  Ranunculus sardous Lowell Ahart 1992-5-9 6751 Butte Thermalite Diversion Pool Lake Oroville Recreation Area (n side, near Longs Bar Monument, about 2 mi w of Oroville Dam) 76 Comment
  CHSC1527  Rhamnus ilicifolia 1937-5-1 Butte Butte Creek. 91 Comment
  CHSC29815  Rhamnus ilicifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2259 Butte On Jordan Hill Rd, ca. 4.8 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CHSC62490  Rhamnus ilicifolia B. Castro 1987-5-18 105 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive within general area of Foothill Woodland/Chaparral/Grassland mosaic. 445 Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  UC726401  Rhamnus purshiana A. A. Heller 1919-5-17 13157 Butte near Stirling; Feather River 975 Comment
  HSC100784  Rhamnus tomentella subsp. tomentella Lowell Ahart 2009-5-23 15724 Butte S side of Ten Mile House Rd., Upper Bidwell Park, 1/2 (air) mi. SW of the intersection of Hwy. 32 and Ten Mile House Rd., 10 (air) mi. NE of Chico. 311 Comment
  CHSC108974  Rhododendron Lowell Ahart; John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico creek, Lost Park in Bidwell Park, city of Chico. 60 Comment
  CAS-BOT-BC56641  Rhododendron occidentale L. P. Janeway 1995-6-28 4821 Butte Top of Watson Ridge at junction of Roads 21N24 and 21N25; about 1.5 mi west of Kenebeck Ridge 1249 Comment
  CAS-BOT-BC170520  Rhus aromatica A. A. Heller 1914-3-19 11212 Butte Canyon of Big Chico Creek 76 Comment
  UC1532353  Rhynchospora californica Vernon Oswald 1985-7-10 1895 Butte ca. 0.2 mi. n.e. Salmon Hole (ca. 200 ft. s. of Upper Park Rd., Upper Bidwell Park, Chico); Chico, Upper Bidwell Park 182 Comment
  JEPS113701  Rhynchospora capitellata Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14278 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  SEINET5569898  Ribes californicum H. S. Gentry, S. Koch 1962-1 19763 Butte Cohasset. 914 Comment
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  CAS-BOT-BC169093  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  UC1127522  Ribes roezlii C. G. Albertus 1933-7-25 50 Butte just s Thompson's; Chico Quadrangle Comment
  LA205438  Ribes viscosissimum A. A. Heller; 1915-6-26 10232 Butte Sierra Nevada, summit above Jonesvillle 2133 Comment
  CAS-BOT-BC340982  Robinia pseudoacacia Lowell Ahart 1968-4-20 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC51875  Robinia pseudoacacia L. P. Janeway 1987-4-20 2008 Butte North side of hwy 32 ca 9 mi NE of jct with hwy99; at Ten Mile House Trail Rd. 471 Comment
  CHSC51254  Rorippa curvisiliqua var. orientalis Lowell Ahart 1990-10-21 6641 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  CHSC82213  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  JEPS103432  Rorippa palustris var. occidentalis Lowell Ahart 2002-4-15 9491 Butte On the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  CHSC66083  Rosa californica Vernon H. Oswald 1996-5-22 7628 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Between the farm road and the slough at the SE corner of the Riparian Sanctuary. 28 Comment
  CDA3959  Rosa eglanteria L. Ahart 2002-6-2 9677 Butte South of the intersection of Black Bart Road and Forbestown Road, about 3 miles (air) southwest of Forbestown. Comment
  CAS-BOT-BC148126  Rosa gymnocarpa Lowell Ahart 1983-9-21 4464 Butte Along French Creek, aobut 3 miles north of the sly Creek Dam, north of Strawberry Valley 900 Comment
  JEPS116658  Rosa multiflora L. P. Janeway, B. Castro 2010-4-30 9970 Butte Lower Bidwell Park, Chico Chico (along southeast side of Big Chico Creek about 160 m northeast of intersection of E, 8th Street and El Monte Avenue); Sacramento Valley 75 Comment
  CHSC87540  Rosa pisocarpa subsp. ahartii R. D. Fischer 2004-5-2 136 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at the end of 10 Mile House Road, near gated property boundary. In meadow, close to a drainage. East side of road, east side of Big Chico Creek. 228 Comment
  POM206580  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CHSC28475  Rotala ramosior R. A. Schlising 1979-10-14 3508 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC38545  Rotala ramosior Vernon Oswald 1983-7-8 836 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 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
  UCD168152  Rubus armeniacus Marcel Rejmanek 2017-5-19 2588 b Butte By Highway 99, ca 200 m south of the intersection with West Hamilton Road. Comment
  CHSC40332  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CHSC11997  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville. 1600 Comment
  CHSC52127  Rubus ursinus L. P. Janeway 1987-5-10 2050 Butte Along rd from Stirling City to West Branch Feather River, ca 5 mi from Stirling City. At edge of pond in bend of rd. 853 Comment
  POM91605  Rubus vitifolius C. C. Bruce 1898-05 1793 Butte One valley, two mountains. Comment
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Mar 5 2011
  JEPS124099  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC433477  Rumex dentatus M. S. Taylor 1982-5-22 4504 Butte Graylodge [Gray Lodge] Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CAS-BOT-BC433478  Rumex dentatus Lowell Ahart 1982-4-29 3393 Butte About 1/2 mile north-west of the sign in station, Gray Lodge, about 12 miles southwest of Gridley 35 Comment
  UCD101344  Rumex occidentalis A. A. Heller 1914-7-23 11595 Butte Chico Meadows. 1219 Comment
  UCD101470  Rumex stenophyllus L. Ahart 1982-7-10 3676 Butte 1/8 mi se of Graylodge Graylodge Wildlife Refuge HQ, ca. 12 mi sw of Gridley. Comment
  CAS-BOT-BC434166  Rumex triangulivalvis John Thomas Howell 1962-6-16 37563 Butte Magalia 731 Comment
  UC600624  Sagina E. B. Copeland 1929-7-16 Butte Jonesville 1550 Comment
  CHSC113217  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-4-26 19410 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
  CHSC113224  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-2 19433 Butte On the south side and below the high water line of the reservoir, about 2 1/2 miles (air) west of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 288 Comment
  CHSC28729  Sagina decumbens subsp. occidentalis R. A. Schlising 1979-4-8 3356 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 (E to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS127102  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-4-15 20746 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UC426897  Sagittaria cuneata E. B. Copeland 1930-7-29 5 Butte above Jonesville; above Jonesville 1700 Comment
  JEPS107337  Salix exigua Lowell Ahart 2005-4-2 11696 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
  CHSC42436  Salix exigua var. hindsiana Lowell Ahart 1987-5-6 5540 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC437339  Salix exigua var. hindsiana W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek) Comment
  CAS-BOT-BC107963  Salix geyeriana H. F. Copeland 1931-6-11 1546 Butte Kirby Meadows, Jonesville 1828 Comment
  JEPS122277  Salix gooddingii Lowell Ahart 2014-4-9 19347 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  UC176210  Salix laevigata A. A. Heller 1913-4-4 10694 Butte levee at Oroville Comment
  UC437331  Salix laevigata Mrs. R. M. Austin Apr. 1896 657 Butte Butte Creek Canyon Comment
  CHSC65014  Salix lasiolepis Vernon Oswald 1987-4-22 2342 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, NE of Hwy 99. 68 Comment
  CAS-BOT-BC129620  Salix lasiolepis var. lasiolepis Peter H. Raven 1953-5-9 5451 Butte 6.5 miles from Bangor on road to Oroville Comment
  SBBG29070  Salix lemmonii E. B. Copeland 1931-8-1 Butte Jonesville 1700 Comment
  UC600410  Salix ligulifolia E. B. Copeland June, 1930 Butte by Butte Creek Jonesville 1500 Comment
  UC75007  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte banks of Butte Creek Chico Comment
  UCD111862  Salix scouleriana E. B. Copeland 1931-7-30 624 Butte Jonesville. 1550 Comment
  CHSC52066  Salvia columbariae R. W. McNulty 1983-4-17 1 Butte Table Mountain, 6 mi N of Oroville, 5.2 mi SW of Cherokee, on Cherokee road, 500 yds W of road. 419 Comment
  CHSC48497  Salvia sonomensis Vernon Oswald 1985-4-5 1703 Butte Cohasset Hwy 1.9 mi w of Villas Rd. 579 Comment
  UC196328  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte near Forest Ranch (w slope of the Sierra); Sierra 731 Comment
  CHSC27338  Sambucus mexicana T. B. Devine 1977-11-6 464 Butte On River Road, 0.25 mi SE of jct with Big Chico Creek. 38 Comment
  CHSC46832  Sambucus mexicana R. A. Schlising 1987-7-19 4535 Butte Coon Hollow. Comment
  RSA0036028  Sambucus nigra subsp. caerulea Lowell A. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  UC1562362  Sanguisorba annua Vernon Oswald and Lowell Ahart 1990-7-5 4347 Butte on n side of Humboldt Rd just w of Scout Rd. Butte Meadows (Butte Meadows) 1325 Comment
  CHSC92566  Sanicula bipinnata L. P. Janeway 2005-3-10 8356 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC4089  Sanicula bipinnatifida L. R. Alexander 1967-4-9 7 Butte Found 4.5 mi. from Chico on the Paradise road ca. 250 yds. off the left hand side of the road. 182 Comment
  POM82756  Sanicula tuberosa C. C. Bruce 1897-03 s.n. Butte Little Chico Comment
  SEINET10454589  Sanicula tuberosa Mary Susan Taylor 1979-3-20 Taylor 1938 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
  UC436291  Sarcodes sanguinea E. B. Copeland Jul 1930 Butte Jonesville 1550 Comment
  CHSC43961  Satureja douglasii V. Oswald; B. Castro, D. Perske 1988-5-28 3345 Butte Douglas Perske's property located at the end of Bull Creek Rd. e of Cohasset Rd., ca. 1 mi nne of Cohasset School. 890 Comment
  CAS-BOT-BC436861  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436864  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  UC1713670  Saxifraga aprica E. B. Copeland 1930-7-12 Butte above Butte Creek House (Jonesville); Jonesville 1700 Comment
  NY186188  Saxifraga gracillima A. A. Heller 1914-3-19 11214 Butte Canyon of Big Chico creek Comment
  SEINET10871269  Saxifraga nidifica Lowell Ahart 1983-3-27 Ahart 3905 Butte Peter Ahart Ranch, ca. 3 mi NE of Honcut. Valley Grassland; 50 m. 50 Comment
  UC1594563  Saxifraga odontoloma Lowell Ahart 1992-7-26 6852 Butte about 1/2 mi n Carr Mine (about 2 (air) mi s of Snow Mountain, edges of a small stream); s of Snow Mountain, n of the Carr Mine 1798 Comment
  POM196050  Saxifraga oregana H. F. Copeland 1929-06 1240 Butte Jonesville. 1524 Comment
  CHSC2824  Scandix pecten-veneris David Prall 1965-4-25 32 Butte South side of Humbug Rd. 0.3 miles west of junction with Honey Run rd. (covered bridge). 198 Comment
  SEINET13945271 Image available Scandix pecten-veneris Barbara Ertter, Lowell Ahart & Jeffrey L. Strachan 1980-1 3280 Butte Peter Ahart Ranch ca 2 1/2 mi NNE of Honcut between Oroville & Marysville. T17N R4E SEC 4, NE 1/4, elev ca 100 ft 30 Comment
  CHSC44619  Sceptridium multifidum Vernon Oswald 1985-9-2 1935 Butte Concow Rd. ca. 6 air miles nne of Lake Concow at Rag Dump. Near Fall Creek. 1170 Comment
  CHSC66168  Schoenoplectus acutus var. occidentalis Vernon H. Oswald 1996-5-27 7656 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a drainage on the bed of seasonal marsh at the SW corner of Tract 2, Sanc-tuary II. 33 Comment
  CAS-BOT-BC111653  Schoenoplectus mucronatus Malcom A. Nobs; Stanley Galen [S. Galen] Smith 1949-7-29 1086 Butte Weedy rice field, ca. 5 miles west of Richland. Comment
  RSA500434  Schoenoplectus subterminalis Vernon H. Oswald, L. Ahart 1989-8-15 3939 Butte Soda Ridge Rd. 1.4 miles W of its jct with Coon Hollow Rd, 1.2 airmiles N of Philbrook Reservoir. 1753 Comment
  JEPS95816  Schoenoplectus tabernaemontani Lowell Ahart 1999-9-21 8278 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
  UC683297  Scirpus californicus Alan A. Beetle 1941-6-27 2739 Butte Rte 99E 4 mi n Richvale (along roadside); n of Richvale Comment
  CDA39129  Scirpus mucronatus Margaret Bellue Aug 1947 s.n. Butte Afton Road, near Biggs. 0 Comment
  CHSC78227  Scribneria bolanderi Lowell Ahart 2000-6-4 8442 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CHSC52200  Scutellaria californica L. P. Janeway 1988-6-19 2819 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd; along dirt rd/ firebreak along powerline (3-wire, wooden poles). 274 Comment
  JEPS108982  Scutellaria californica Lowell Ahart 2006-6-9 12658 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CHSC52202  Scutellaria siphocampyloides L. P. Janeway 1989-5-19 3264 Butte Near upper SE branches of Rattlesnake Cr ca 2.3 road mi from bridge over W Br Feather River via the rd to Sawmill Pk. 807 Comment
  UC1594691  Scutellaria tuberosa Vernon H. Oswald and Lowell Ahart 1992-3-24 4887 Butte Lake Oroville Recreation Area, along Burma Road Lake Oroville Recreation Area (n side of Thermalito Diversion Pool about 1/4 mi e of the old bridge site) 76 Comment
  CHSC42518  Secale cereale Lowell Ahart 1987-5-6 5571 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
  CAS-BOT-BC415021  Sedella pumila A. A. Heller; H. E. Brown 1902-5-7 5486 Butte Berry Canyon (near Clear Creek) Comment
  CHSC3149  Sedella pumila Gary Dutton 1966-4-23 229 Butte Found on Hwy. 32, 9 miles from Chico Forest Ranch Road. Comment
  CHSC87435  Sedella pumila R. D. Fischer 2004-3-28 98 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail. Located approx. 0.5 mile south of Pine Trail junction near drainage. 396 Comment
  CAS-BOT-BC415016  Sedella pumila Herbert L. Mason 1941-4-6 12409 Butte Three miles S of Chico near junction of road to Paradise 91 Comment
  CAS-BOT-BC415024  Sedella pumila A. A. Heller 1926-4-19 13923 Butte Along the Chico-Oroville road, about 7 miles from Chico Comment
  HSC78630  Selaginella hansenii L. P. Janeway 1984-9-29 1177 Butte At top of Feather Falls on Fall River (a tributary to Middle Fork of Feather River), 'Feather Falls Scenic Area 579 Comment
  CHSC30693  Selaginella wallacei M. S. Taylor 1980-5-27 2666 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CAS-BOT-BC363283  Senecio aronicoides A. A. Heller 1915-6-11 11967 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC100949  Senecio aronicoides R. A. Schlising 1980-6-10 3678 Butte Carpenter Ridge, along Humboldt Road, 1.9 miles northeast of junction with Highway 32 at Lomo. 1356 Comment
  CDA13906  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-7-3 13986 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC86441  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 93 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  CAS-BOT-BC364272  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte In Chico Meadows 1219 Comment
  CHSC43199  Senecio triangularis Robert Banchero 1981-7-19 608 Butte 0.3 mi s of Balt Mt look-out Tower, on Bald Mt. Meadow. 1688 Comment
  SEINET10473958  Senecio triangularis Mary Susan Taylor 1978-7-19 Taylor 1743 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  SFV11435  Senecio vulgaris M. L. Vincent 1964-4-9 533 Butte 1.5 miles south of Pearson Road. Comment
  SEINET10612366  Sequoia sempervirens Metcalf 1981-4-10 METCALF 6 Butte Cultivated. Leaves green with tree approximately 100 feet tall. Small population, just north of highway 99 along Big Chico Creek, within Chico. North side of Chico Creek. White Oak Forest. Loam. 30 Comment
  CAS-BOT-BC364729  Sericocarpus oregonensis subsp. californicus A. A. Heller 1916-9-23 12658 Butte Sierra Foothills near Forest Ranch Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS76248  Setaria pumila W. L. Jepson 1939-8-17 19456 Butte Reather R. bottom near Oroville; Reather R. 45 Comment
  CHSC47641  Setaria sphacelata Lowell Ahart 1977-8-14 1551 Butte In a slough, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  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
  CHSC84151  Sherardia arvensis Lowell Ahart 2003-6-25 10315 Butte In lawn, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  RSA449557  Sidalcea Anstruther Davidson 1928-07 s.n. Butte Feather River Comment
  SEINET7073626  Sidalcea asprella A. G. Vestal 1955-5-21 s.n. Butte About 5.8 miles east of Oroville on the Olive Highway. UTM Zone 10, 631906mE, 4373738mN. Coordinate datum: NAD27. Comment
  CHSC21070  Sidalcea calycosa M. S. Taylor 1975-10-4 956 Butte On s side of creek entering ne corner of Kinkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  CHSC39887  Sidalcea calycosa M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5404 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  UC725656  Sidalcea calycosa A. A. Heller 1942-5-17 16474 Butte near where the road dips down toward Oroville (s end of the bare lava top of Table Mountain); s end bare lava top Table Mountain Comment
  RSA325176  Sidalcea calycosa subsp. calycosa M. S. Taylor, L. Ahart, J. Jokerst 1984-4-6 5404 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC107239  Sidalcea diploscypha Lowell Ahart 2011-5-27 17357 Butte On damp brown to black clay soil, about 150 yards west of the west edge (dredged area) of North Honcut Creek, about 2 1/2 north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 65 Comment
  CHSC51888  Sidalcea diploscypha Sandra Rosas 1988-4-26 15 Butte South side Hahn Rd ca 0.33 mi W of jct with Hwy. 99, ca 13 mi N of Chico. 68 Comment
  CHSC76947  Sidalcea diploscypha Margie Collins 1894-5-1 Butte Nord. Comment
  CHSC34953  Sidalcea gigantea R. Schlising; R. Banchero 1980-7-31 3941 Butte 1.1 mi S of Inskip along Skyway. Comment
  JEPS109821  Sidalcea gigantea Dean W. Taylor 2004-7-22 19207 Butte Four Trees Road (Forest Road 23N00) ca. 0.3 miles North of Coyote Gap 1310 Comment
  UC204918  Sidalcea glaucescens A. A. Heller 1914-8-7 11656 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  RSA754584  Sidalcea hartwegii L. Ahart 2009-4-22 15583 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UC66034  Sidalcea hartwegii A. A. Heller and H. E. Brown 1902-5-9 5512 Butte near Clear Creek; near Clear Creek, Berry Canyon Comment
  SEINET7718632  Sidalcea humilis Unknown Butte Mesa Comment
  CHSC39411  Sidalcea oregana subsp. spicata L. Ahart 1983-8-16 4308 Butte In small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. 487 Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 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
  UC852811  Silene californica A. A. Heller 1915-5-2 11863 Butte hills 12 mi ne Chico (near Rock Creek); ne of Chico near Rock Creek Comment
  CAS-BOT-BC385886  Silene douglasii E. B. Copeland 1931-6-19 634 Butte Jonesville, near the Summit 2100 Comment
  CHSC58899  Silene douglasii Lowell Ahart 1992-7-29 6878 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC46830  Silene lemmonii R. A. Schlising; L. P. Janeway 1988-7-1 4557 Butte NE part of county, NE of Snow Mountain, near small un-named lake. Comment
  UC120147  Silene lemmonii unknown Butte Jonesville Comment
  RSA0002350  Silene occidentalis subsp. longistipitata E. B. Copeland 1930-7-28 635 Butte Jonesville. 1550 Comment
  CHSC81465  Silybum marianum Petra M. Lee 2000-4-30 Butte Chico. 1/2 mile NW of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  JEPS102307  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte 4 air miles SW of Gridley (N side of the dirt road E of the large pump, S side of Evans-Reimer Road, 1 mi E of Pennington Road, Gray Lodge Waterfowl Management Area) 22 Comment
  CHSC29735  Sisymbrium officinale J. D. Jokerst 1980-4-17 593 Butte Top of North Table Mt. 472 Comment
  CHSC38871  Sisyrinchium bellum Vernon Oswald 1983-3-31 229 Butte Upper Bidwell Park, on the s side of Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 152 Comment
  UC143528  Sisyrinchium bellum Mrs. R. M. Austin July, 1896 34 Butte Colby Comment
  UC600468  Smilacina stellata H. F. Copeland 1929-6-12 Butte Jones Creek Jonesville 1524 Comment
  UC119624  Smilax californica Mrs. R. M. Austin April 1883 284 Butte Big Chico Comment
  CHSC42007  Solanum americanum Lowell Ahart 1986-11-7 5417 Butte In a prune orchard, east of the Feather River and the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC76423  Solanum rostratum Lowell Ahart 1999-10-28 8320 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
  UC829903  Solidago velutina subsp. californica A. A. Heller 1916-9-9 12656 Butte near Durham Comment
  RSA129483  Sorghum halepense H. S. Yates 1936-8-14 6124 Butte 10 miles S. of Durham 30 Comment
  CHSC47699  Sparganium emersum subsp. emersum Lowell Ahart 1989-9-21 6399 Butte Along the margins of a apond, on a branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  CHSC38522  Spartium junceum Vernon Oswald 1983-5-4 424 Butte Upper Bidwell Park, Chico, 100 ft w of the parking lot at Day Camp. 91 Comment
  SEINET10939979  Spartium junceum Mary Susan Taylor 1980-5-31 Taylor 2751 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CHSC118036  Spergula arvensis subsp. arvensis Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 233 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC44488  Spergula arvensis subsp. arvensis Lowell Ahart 1988-5-12 5989 Butte Pasture field, about 1/4 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
  JEPS103601  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte 7 air mi S of Oroville (E side of Lone Tree Road, 1 1/8 mi N of Cox Lane, 3 air mi SW of Palermo) 35 Comment
  CDA34643  Spergularia bocconi L. Ahart 2009-7-3 15986 Butte ON the north side of road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC114168  Spergularia bocconi Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16792 A Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  CDA19178  Spergularia rubra Gary Vercruse, Riley 2001-5-21 PDR 1170768 Butte Sacramento Valley; 10010 Jones Ave, Durham. 0 Comment
  CHSC40005  Spergularia rubra Lowell Ahart 1983-8-16 4309 Butte Found on bank of small wash, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  JEPS114724  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC28903  Sphenosciadium capitellatum M. S. Taylor 1978-7-18 1724 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi W of Cherry Hill Campground. 1524 Comment
  CHSC42675  Sphenosciadium capitellatum Vernon Oswald 1985-8-4 1920 Butte Ca. 0.2 mi W of Humboldt Rd. at the bridge over Butte Creek S of Cherry Hill. 1414 Comment
  JEPS121989  Sphenosciadium capitellatum Lowell Ahart 2014-7-13 19648 Butte North part of meadow, about 100 yards southeast of Philbrook Road, about 1 air mile west of Philbrook Reservoir. Comment
  CAS-BOT-BC147947  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock 762 Comment
  CAS-BOT-BC147948  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesville 1500 Comment
  CHSC42801  Spiraea douglasii L. P. Janeway 1987-6-26 2317 Butte SW end of Logue Meadows. 1325 Comment
  CHSC69052  Spiraea douglasii Lowell Ahart 1997-8-1 7785 Butte Near some 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
  SBBG28490  Spiraea douglasii E. B. Copeland 1929-7-15 Butte Jonesville 1500 Comment
  SEINET264180  Spiraea douglasii R. J. Becraft 1929-7-21 Butte Philbrook Creek 1829 Comment
  CHSC43639  Stachys ajugoides var. rigida B. Castro 1987-8-25 204 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  UC884335  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  SEINET12326804  Stachys palustris subsp. pilosa Unknown 1983-1 4288 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  CHSC102960  Stachys pycnantha Lowell Ahart 2009-8-23 16259 Butte Drainage on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC60609  Stachys pycnantha L. P. Janeway 1992-6-13 4235 Butte Along Piute Drive, ca 1/4 mi east of Dark Canyon Road and ca 1/2 mi south of Parkhill and Big Bend Road. 594 Comment
  UC1563286  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mi northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  UC884287 Image available Stachys pycnantha A. A. Heller 1914-7-23 11592 Butte Chico Meadows Sierra Nevada. 1219 Comment
  UCD80405  Stachys rigida CNPS SN Foothill Team 2005-5-25 SNFN 0170 b Butte City of Chico, about 300 m south of northern boundary of Upper Bidwell Park, on the east side of Big Chico Creek. 278 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
  CHSC99553  Stellaria borealis subsp. sitchana L. P. Janeway; D. Toren, C. Christofferson,H. Koeth, D. Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada. Plumas National Forest; along Coon Creek about 100 m northeast of Rogers Cow Camp Campground, about 500 m west of Oroville-Quincy Hwy. 1234 Comment
  CHSC48273  Stellaria calycantha Vernon Oswald 1987-7-29 3166 Butte Between the dead-end spur road paralleling Coon Hollow Road on the south and the southwestern-most lake in a cluster of three located in the SE1/4 of S6. Along a streamlet. 1752 Comment
  SEINET10537517  Stellaria longipes Lowell Ahart 1983-8-16 Ahart 4306 Butte T26N R4E section 32? On dry dark soil in a small mountain meadow, near Bull Hill Rd, ca. 3.5 mi south of Butte Meadows. Yellow Pine Forest; l600 m. 1600 Comment
  CAS-BOT-BC391088  Stellaria longipes subsp. longipes H. F. Copeland 1920-8-1 190 Butte Jonesville 1219 Comment
  CAS-BOT-BC391087  Stellaria longipes subsp. longipes H. F. Copeland 1920-7-8 31 Butte Jonesville 1219 Comment
  CHSC29990  Stellaria nitens L. Ahart 1980-3-26 Butte E of the cemetery, ca. 1/2 mi e and 1/4 mi s of Hurleton. 600 Comment
  CAS-BOT-BC375584  Stephanomeria lactucina E. B. Copeland 1930-7-24 500 Butte Jonesville 1550 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
  CAS-BOT-BC375581  Stephanomeria lactucina H. F. Copeland 1920-8-24 219 Butte Scotch John Meadows 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
  SEINET10606025  Stipa columbiana Mary Susan Taylor 1982-5-2 Taylor 4395 Butte T23N R5E NE1/4NE1/4 Sec. 6. Pulga SW squad. Pulga serpentine area on N side of Hwy 70 at Pulga bridge, ca. 20 mi NE of Oroville. With Silene gallica, Claytonia parviflora, Potentilla glandulosa. 488 Comment
  JEPS94685  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
  UCD164126  Streptanthus diversifolius N. Ivalu Cacho; Sharon Y. Strauss 2010-5-15 IC-SS 85 - Butte Table Mountain. 400 Comment
  CHSC33405  Streptanthus longisiliquus R. E. Preston 1981-7-8 100 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  CHSC39964  Streptanthus longisiliquus L. Ahart; P. Ahart 1983-6-30 4187 Butte Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. 1100 Comment
  CHSC94104  Streptanthus longisiliquus Lowell Ahart 2006-7-11 12939 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC95057  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte Northern High Sierra Nevada Foothills. Serpentine outcrop along west side of Lunt Road 1.0 km southwest of Hwy 70. 495 Comment
  UC1492814  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4177 Butte Ponderosa Rd 0.1 mi e West Branch Bridge (n of Magalia) Comment
  CAS-BOT-BC87443  Streptanthus polygaloides Walter S. Lennon 1974-1-1 s.n. Butte Sierra Nevada. Near Pulga. Comment
  SEINET10448515  Streptanthus polygaloides Mary Susan Taylor 1981-5-21 Taylor 3765 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  SEINET10448521  Streptanthus tortuosus Mary Susan Taylor 1980-5-27 Taylor 2700 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC4639  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-21 353 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 4 yds. off E side Old Cherokee Rd., 5.4 mi. from Chico Rd. Comment
  CHSC57124  Streptanthus tortuosus var. suffrutescens L. P. Janeway 1991-5-1 3923 Butte Dark Canyon Road ca 1 1/4 mi south of Hwy 70. Road-cut bank. 518 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
  CHSC46873  Suaeda calceoliformis Vernon Oswald 1989-9-6 3981 Butte West Liberty Rd along the n boundary of Gray Lodge Wildlife Area, 0.8 mi w of Pennington Rd. Roadside drainage. 19 Comment
  UC1490565  Suaeda calceoliformis Lowell Ahart 1981-11-6 3227 Butte about 12 mi sw Gridley (e of Gray Lodge Waterfowl Management Headquarters, w of parking area, about 0.5 mi w of Pennington Road,) 35 Comment
  CHSC43136  Symphyotrichum ascendens Robert Banchero 1981-8-4 643 Butte Ca 1.7 mi N jct of Scotts-John Rd and Jonesville Rd. 1828 Comment
  UC179648  Symphyotrichum bracteolatum A. A. Heller 1914-8-7 11655 Butte Butte Meadows, wet meadows Butte Meadows 1219 Comment
  CAS-BOT-BC97691  Symphyotrichum chilense A. A. Heller 1914-9-3 11760 Butte On the Chico-Hamilton Road, 6 miles from Chico Comment
  CHSC26454  Symphyotrichum chilense Lowell Ahart 1977-10-15 Butte Peter Ahart Ranch, Honcut. Comment