Search Results — 2000 specimen records retrieved (1609 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
  JEPS120575  Acer circinatum Tim Hanson 2013-9-24 11 Butte Northern High 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. Comment
  UC1171590  Acer circinatum R. Bacigalupi 1934-9-2 2326 Butte along Chico-Butte Meadows Road 10 mi sw Butte Meadows (Canyon of W Fork of Campbell Creek); Lassen National Forest, Chico Quad., W Fork Campbell Cr Comment
  UC870267  Acer glabrum var. diffusum A. A. Heller 1915-6-16 12025 Butte summit of the Sierra Nevada above Jonesville; summit of Sierra Nevada above Jonesville 2133 Comment
  CHSC38254  Acer macrophyllum Vernon Oswald 1983-4-1 256 Butte Upper Bidwell Park, Chico in the wooded strip s of the creek and e of the footbridge at the Golf Course. 91 Comment
  CHSC44463  Acer macrophyllum Lowell Ahart 1988-3-27 5934 Butte along a dirt road west of the Poe Power House, east of the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 274 Comment
  UCD116997  Acer macrophyllum L. Ahart 1982-5-8 3409 Butte 1 mile SW of Forbestown Reservoir, 4 miles NE of Forbestown. 800 Comment
  CHSC66428  Acer saccharinum Vernon H. Oswald; Lowell Ahart 1996-6-10 7745 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  SEINET10937968  Achillea millefolium Mary Susan Taylor 1978-5-6 Taylor 1587 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CAS-BOT-BC210633  Achnatherum lemmonii Lowell Ahart 1988-6-21 6058 Butte Along Poe Power House Road, about 3/4 mile north of the Poe Power House, about 1 1/4 miles south-east of Jarbo Gap 426 Comment
  CHSC41351  Achnatherum lemmonii R. A. Schlising; R. Banchero 1980-7-7 3861 Butte E part of country, NE of village of Feather Falls. 1280 Comment
  RSA299172  Achnatherum lemmonii var. lemmonii J. T. Howell 1962-6-16 37566 Butte Magalia 732 Comment
  CHSC92276  Achnatherum stillmanii L. P. Janeway; B. Castro 2005-8-3 8517 Butte Northern High Sierra Nevada. Plumas National Forest; southerly-facing forested slope between Flea Mountain and Dogwood Creek, 1.3 km northeast of top of Flea Mountain. 1122 Comment
  CHSC95045  Achnatherum stillmanii L. P. Janeway 2006-7-9 8807 Butte High Cascade Range. 150 m west of Hwy 32, 3.0 km south of Humboldt Road (Lomo); near top of ridge between Big Chico Creek and West Branch Butte Creek. 1140 Comment
  CHSC75246  Achyrachaena mollis Jennifer Slater 1997-4-12 19 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  UCD150367  Achyrachaena mollis Harry A. George 1967-4-24 s.n. Butte Shippe Rd. Comment
  SEINET11838910  Achyrachaena mollis Unknown 1978-1 13 Butte Small population ca 2 mi N of Chico on State Hwy. 99 67 Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  UCD128417  Achyrachaena mollis Susan M. Leary 1978-4-18 8 Butte Southwest corner of junction of Broyles Road and Highway 99, ca. 11.2 miles northwest of Chico. 60 Comment
  CHSC42559  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 1/2 miles south-west of Pulga. 365 Comment
  CHSC50038  Acmispon brachycarpus Lowell Ahart 1990-4-15 6465 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of Oroville. 289 Comment
  JEPS119579  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte 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. Comment
  UCD103754  Acmispon denticulatus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  SD48505  Acmispon grandiflorus var. grandiflorus E. K. Balls 1957-5-22 22513 Butte North fork Feather River, above Camp Rogers, on trail to Buck's Lake. 655 Comment
  CHSC48515  Acmispon nevadensis var. nevadensis Vernon Oswald 1987-5-31 2942 Butte Camelot Estates at the n end of Lake Concow. 621 Comment
  CHSC52676  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-6 328 Butte Ca. 0.9 mi w of Cherry Hill in the ne part of Butte County, Butte Meadows. 1414 Comment
  SEINET7728118  Adiantum emarginatum C. C. Parry 1883-1 Butte Little Chico Canyon Comment
  CHSC23472  Adiantum jordanii T. D. Brumley 1974-5-2 4 Butte On s side of Chico creek ca. 400 yds s of Municipal Golf Course building, Chico. 152 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
  CHSC32723  Adiantum jordanii M. S. Taylor 1981-4-8 3500 Butte At the end of Dark Canyon Rd around the turnout near the restroom, up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  SEINET10529854  Adiantum jordanii Mary Susan Taylor 1973-1 Taylor 55 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10966247  Adiantum jordanii Mary Susan Taylor 1976-4-4 Taylor 1059 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  UCD137231  Adiantum jordanii G. M. Trimble 1974-4-28 sc- 17 Butte 300 yards W. of Covered Bridge; ca. 100 yards above the river. 266 Comment
  CAS-BOT-BC110727  Aegilops triuncialis Lowell Ahart 1980-5-10 2227 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78216  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte On the north side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC202594  Aesculus californica Lowell Ahart 1985-6-17 5045 Butte Near the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 762 Comment
  SEINET10494491  Aesculus californica Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4112 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC45667  Ageratina occidentalis Vernon Oswald 1987-7-16 3124 Butte West Branch of Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  CAS-BOT-BC29496  Agoseris J. T. Howell 1962-6-16 37565 Butte Magalia 731 Comment
  CHSC50812  Agoseris glauca var. monticola Vernon Oswald 1990-7-23 4383 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  JEPS119888  Agoseris grandiflora var. grandiflora Lowell Ahart 2012-6-5 18174 Butte On the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  CHSC111146  Agrostis avenacea Lowell Ahart 2012-6-5 18167 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  CHSC117594  Agrostis capillaris B. Castro; Melinda Carlson 2007-10-25 1681 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek within surrounding disturbed riparian forest. Arroyo Chico land grant area. 39 Comment
  CHSC94554  Agrostis exarata Lowell Ahart 2006-9-11 13301 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
  UC591541  Agrostis exarata H. F. Copeland 1935-7-26 Butte Jonesville 1500 Comment
  SEINET10507085  Agrostis exigua Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4166 Butte T21N R6E nw sec 29. Along a small seep near Bean Creek Rd, ca. 1/4 mi s of Little Bald Rock, ca. 20 mi ne of Oroville. Yellow Pine Forest; 1000 m. 1000 Comment
  CHSC30300  Agrostis hendersonii M. S. Taylor 1980-5-27 2710 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CAS-BOT-BC139437  Agrostis hyemalis A. A. Heller 1914-7-23 11613 Butte In Chico Meadows. 1219 Comment
  CAS-BOT-BC138849  Agrostis microphylla Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC113240  Agrostis microphylla Lowell Ahart 2014-4-20 19383 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC69119  Agrostis pallens Lowell Ahart 1997-8-1 7772 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
  CDA13331  Agrostis scabra G. F. Hrusa, T. D. Wilfred 1996-7-9 13177 Butte Sierra Nevada; Dry, open woods of Ponderosa pine approx. 0.4 m from Hwy 162 on 22N89. Perennial. Uncommon here. Comment
  UCD53293  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  CHSC63305  Agrostis stolonifera Lowell Ahart 1994-6-6 7314 Butte On the south edge of Cottonwood Road, on the east side of the overpass over Highway 70, about 3 1/2 miles (air) north of Oroville. 60 Comment
  RSA716149  Agrostis stolonifera L. 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
  CHSC105685  Agrostis thurberiana Lowell Ahart 2010-9-21 17214 Butte Open meadow-like area, 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
  CHSC31933  Agrostis variabilis J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1032 Butte Humboldt Peak, large, open, bowl-shaped, volcanic mudflow ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  CHSC38721  Ailanthus altissima Vernon Oswald 1983-5-22 528 Butte Upper Bidwell Park, Chico, along the edge of the parking area at the Horse Arena. 79 Comment
  SEINET10868764  Aira caryophyllea Lowell Ahart 1987-5-6 Ahart 5546 Butte On dry sand and silt, on gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC30029  Aira elegans L. Ahart 1980-5-4 2191 Butte Ca. 50 m sw of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  SEINET9753572 Image available Alisma lanceolatum Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC33525  Alisma triviale R. A. Schlising 1981-6-21 4104 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
  CHSC36906  Allium amplectens Marc Hayes; R. Schlising 1978-5-22 3266 Butte NW part of county, n of Chico; along Cohasset Hwy, 4.3 mi n o f Mud Creek. Comment
  CHSC90192  Allium amplectens Camela J. Ott 1989-4-11 8 Butte Population ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  SEINET8466775 Image available Allium amplectens D. W. McNeal 1974-4-24 1426 Butte Along Hwy #70, 4.4 miles south of the Oroville Dam Exit (Hwy. #126) Comment
  CAS-BOT-BC460736  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM183164  Allium campanulatum H. F. Copeland 1930-7-19 1330 Butte Jonesville. 1524 Comment
  CHSC3868  Allium cratericola Gary Dutton 1966-3-28 152 Butte Found at Table Top. Comment
  CHSC115468  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  CAS-BOT-BC135814  Allium jepsonii A. A. Heller 1940-6-5 15703 Butte Jarboe Pass on the Feather River Highway 609 Comment
  CHSC94209  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large 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
  CHSC87430  Allium neapolitanum R. D. Fischer 2004-3-22 93 Butte Upper Bidwell Park in Chico, on the lower east-side. Collected along road leading to old pistol range. 76 Comment
  CHSC44518  Allium obtusum var. obtusum Lowell Ahart 1988-3-28 5954 Butte Near Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  CHSC102996  Alnus rhombifolia Lowell Ahart 2009-8-23 16298 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
  SEINET10838855  Alnus rhombifolia Lowell Ahart 1985-1-27 Ahart 4837 Butte Kunkle Res., about 2 miles south of Paradise. Comment
  SEINET10478495  Alnus tenuifolia Mary Susan Taylor 1975-8-31 Taylor 886 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC43172  Alopecurus aequalis Robert Banchero 1981-8-6 636 Butte Ca 3 air mi se of Jonesvill. 1853 Comment
  CAS-BOT-BC138037  Alopecurus carolinianus Lowell Ahart 1987-5-10 5606 Butte In an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1.5 mile north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC27056  Alopecurus carolinianus Lowell Ahart 1978-4-21 1660 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC137940  Alopecurus saccatus Lowell Ahart 1980-5-10 2236 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC78220  Alopecurus saccatus Lowell Ahart 2000-5-18 8371 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  JEPS103452  Amaranthus albus Lowell Ahart 2002-10-17 9985 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS87520  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road); w of Butte Creek 48 Comment
  CDA3282  Amaranthus retroflexus L. Ahart 2006-9-28 13365 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. Comment
  CAS-BOT-BC55585  Ambrosia psilostachya A. A. Heller 1914-8-11 11759 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  CHSC75967  Ammannia coccinea Lowell Ahart; Vernon H. Oswald 1999-8-13 8167 Butte Along east side of the Sacramento River, northwest of Parrott Landing, about1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC94336  Ammannia coccinea Lowell Ahart 2006-8-5 13084 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 300 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC1101419  Ammannia coccinea Herbert L. Mason and Verne Grant 1946-9-27 13141 -A Butte 3 mi. w. Biggs Comment
  SEINET10939968  Ammannia coccinea Mary Susan Taylor 1979-10-2 Taylor 2213 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  UC725863  Amsinckia intermedia A. A. Heller 1942-4-26 Butte Oregon City Road Comment
  SBBG126075  Amsinckia lycopsoides L. Ahart 2012-4-20 17889 Butte S of the trail, ca 50 yards E of Big Chico Crk, ca 100 yards W of Ten Mile House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 202 Comment
  UC725509  Amsinckia lycopsoides A. A. Heller 1930-3-23 15356 Butte grade toward Paradise just beyond Pentz Comment
  UC726393  Amsinckia lycopsoides A. A. Heller 1941-4-19 16069 Butte hills w of Willows Comment
  CHSC42004  Anaphalis margaritacea Lowell Ahart 1975-9-4 972 Butte Along the South Fork of the Feather River, about 1/2 mile north of Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC8166  Andropogon glomeratus var. scabriglumis K. Henegar 1969-5-15 61 Butte Upper Bidwell Park, on n side of road opposite Bear Hole. Comment
  SEINET3918327  Andropogon virginicus Elden F. Azevedo 1952-10-8 s.n. Butte Oroville.; 0 Comment
  CDA31535  Andropogon virginicus var. virginicus L. Ahart 2000-9-27 8693 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. Comment
  UCR231509  Angelica Anna M. Hurlbutt 2009-8-7 026 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC43624  Anisocarpus madioides Vernon Oswald 1985-5-20 1771 Butte Forbestown Rd. 0.5 mi ne of Robinson Mill Rd. Along the edge of the road. 853 Comment
  UC195390  Anthemis cotula A. A. Heller 1914-6-18 11479 Butte near, east of Butte Creek Durham; Butte Creek Comment
  CHSC84922  Anthoxanthum odoratum L. P. Janeway 2003-7-13 7901 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC50018  Anthriscus caucalis Lowell Ahart 1990-4-8 6436 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  RSA791504  Anthriscus caucalis George K. Helmkamp, E. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC31885  Aphyllon purpureum L. Ahart 1974-3-18 331 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC20487  Apocynum androsaemifolium M. S. Taylor 1975-6-30 812 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC102418  Apocynum cannabinum Lowell Ahart 2009-6-19 15925 Butte On damp soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC32153  Apocynum cannabinum L. Ahart 1976-5-27 1133 Butte La Porte Rd, ca. 100 yds above its jct with Robinson Mill Rd, ca. 2 mi sw of Rackerby. 609 Comment
  CAS-BOT-BC392106  Aquilegia formosa Lowell Ahart 1984-6-10 4703 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  UC398913  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  CHSC52688  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 364 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1828 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
  SEINET10480703  Arabis Mary Susan Taylor, K. Marsh 1974-3-16 Taylor 82 Butte In Devil's Kitchen, Upper Bidwell Park, Chico. Associates: Dudleya. Comment
  LA210043  Arabis glabra var. glabra E. B. Copeland; 1929-7-29 Butte Jonesville 1550.0 Comment
  SEINET1912952  Arceuthobium abietinum R. L. Mathiasen 2010-1 1067 Butte Humboldt Summit 2020 Comment
  UC463034  Arceuthobium campylopodum E. B. Copeland 1931-8-5 Butte Jonesville 1500 Comment
  UC600690  Arceuthobium campylopodum E. B. Copeland July 1929 Butte Jonesville 487 Comment
  CAS-BOT-BC409928  Arceuthobium campylopodum V. Oswald; Lowell Ahart 1988-7-29 3633 Butte along the road connecting Humboldt and Humbug Roads at a point 0.9 miles W of Humbud Road, ca. 3 miles E of Jonesville 1804 Comment
  CHSC33288  Arctostaphylos S. Posner; K. Stern 1972-9-24 1 Butte 200 yds south of Humbug Rd., 3 miles east of Skyway. Comment
  CAS-BOT-BC24437  Arctostaphylos manzanita J. D. Jokerst; L. Ahart; M. S. Taylor 1983-1-17 1684 Butte Top of North Table Mtn. at its nw. corner. Center of w. edge section 32. Comment
  CHSC67934  Arctostaphylos manzanita James D. Jokerst; M. S. Taylor, L. Ahart 1983-1-17 1685 Butte Top of N. Table Mtn. at its NW corner. Township/Range 'center W edge Sect. 32'. Comment
  RSA633001  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27460 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD51984  Arctostaphylos manzanita John Thomas Howell; Lowell Ahart 1976-4-1 54541 Butte In foothill woodland south of Cherokee on road to Oregon City. Comment
  UCD52236  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51561 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CAS-BOT-BC24414  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1928-1-23 14474 Butte At the Ten Mile House. Comment
  CAS-BOT-BC38865  Arctostaphylos manzanita subsp. manzanita Frances Brown 1935-2-11 s.n. Butte Durham Comment
  CHSC31680  Arctostaphylos manzanita subsp. manzanita L. Ahart 1974-2-12 296 Butte Ahart Ranch. Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  UC412700  Arctostaphylos manzanita subsp. manzanita W. P. Taylor 1912-5-27 Butte 4 mi N Oroville, Chambers Ravine Comment
  UC725751  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1941-12-17 16338 Butte Neal Rd 3 mi below Paradise Comment
  UCD52218  Arctostaphylos manzanita subsp. roofii James I. Mallory 1968-12-3 347 Butte Cohasset Ridge; 2 miles north-northwest of Richardson Springs. 518 Comment
  RSA31998  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC726568  Arctostaphylos mewukka A. A. Heller 1940-2-24 15506 Butte a half mi w Ten Mile House (e of Chico) Comment
  JEPS119573  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17745 Butte On the east side of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC38574  Arctostaphylos mewukka subsp. truei W. K. Fisher 1899-1-1 s.n. Butte Berry Creek. Comment
  CHSC48373  Arctostaphylos mewukka subsp. truei Vernon Oswald 1985-2-28 1682 Butte Near Coutolenc Rd. ca. 0.1 mi N of the Skyway on the N edge of the Magalia Serpentine. Comment
  JEPS109967  Arctostaphylos mewukka subsp. truei Dean W. Taylor 2006-7-12 19564 Butte Swain Hill; northwest flank along County Road 47 1158 Comment
  SEINET10973491  Arctostaphylos nevadensis Mary Susan Taylor 1980-8-2 Taylor 3207 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  LA42219  Arctostaphylos patula H. F. Copeland; 1932-6-29 A 7 Butte Jonesville, the Summit Comment
  CHSC26697  Arctostaphylos patula subsp. patula M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1473 Butte On both sides of Old Humboldt Rd, ca. 3 mi E of its jct with Scotts John Rd, N of Jonesville. 1828 Comment
  UCD51944  Arctostaphylos truei John Thomas Howell 1975-6-15 51094 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 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-BC47379  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51101 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48294  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51108 Butte Paradise - Skyway just ne. of Billie Road. 609 Comment
  CHSC42015  Arctostaphylos viscida subsp. viscida Lowell Ahart 1976-2-19 1011 Butte Near Ponderosa Way, about 3 mi south of the Ponderosa Dam on the South Fork of the Feather River, about 3 mi northwest of Forbestown. 609 Comment
  OBI5723  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 mi from Chico Comment
  UC1748290  Arenaria kingii var. glabrescens L. P. Janeway and B. Castro 1999-8-1 6512 Butte 0.3 mi N of: 0.5 mi SW of Summit Lake top of Snow Mountain 2017 Comment
  RSA718156  Aristida oligantha L. Ahart 2006-10-13 13504 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville. 34 Comment
  CHSC37505  Aristida ternipes var. hamulosa J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1679 Butte Top of Table Mt. top of the bench that is ca 200 meters north of Phantom Falls (Wedge of mesa, N branch of Coal Cr. Canyon). 381 Comment
  JEPS94791  Aristida ternipes var. hamulosa Lowell Ahart 1998-6-9 7994 Butte about 7 air mi n Oroville (about 1/2 mi nw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  JEPS119555  Aristolochia californica Lowell Ahart 2012-2-22 17756 Butte About 50 feet from Highway 32, about 9 miles (air) northeast of Chico. Comment
  RSA20867  Aristolochia californica C. B. Wolf 1937-3-29 s.n. Butte Sacramento Valley, 2 mi S of Chico. 58 Comment
  CHSC3347  Asclepias cordifolia Robert L. Smith 1966-4-4 75 Butte Salmon Hole, 6 miles NE of Chico. Little Chico Creek. Comment
  POM75970  Asclepias eriocarpa C. C. Bruce 1897-05 s.n. Butte Sacramento River Comment
  CHSC123  Asclepias speciosa E. Walker 1932-6-2 Butte Magalia 670 Comment
  POM120432  Aspidotis californica C. C. Bruce 1897-06 1869 Butte Iron Canyon. Comment
  SEINET10529842  Aspidotis californica Mary Susan Taylor 1981-5-4 Taylor 3604 Butte Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. 914 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
  SEINET10475114  Aster eatonii Mary Susan Taylor 1979-9-28 Taylor 2200 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC105530  Aster occidentalis var. yosemitanus Lowell Ahart 2010-9-21 17227 Butte On the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  CAS-BOT-BC178464  Astragalus gambelianus Lowell Ahart 1989-5-10 6227 Butte At the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  JEPS119575  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 Butte 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. 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
  CHSC59315  Astragalus pauperculus J. L. Guardino 1992-3-23 1 Butte Paradise, 1/4 mi s of Circle Dr. terminus. 472 Comment
  CHSC100123  Athyrium filix-femina var. cyclosorum L. P. Janeway 2008-8-10 9537 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek, 4.5 road km east-southeast of Hwy 70. Along moist roadside gutter. 823 Comment
  CHSC69103  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 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
  CHSC84211  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-7-12 10377 Butte Along a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  CHSC28901  Athysanus pusillus M. S. Taylor; J. Jokerst 1980-2-23 2318 Butte Ca. 1/4 mi n of Neal Rd, on bluffs overlooking Nance Canyon, ca. 4 mi sw of Paradise. 198 Comment
  CAS-BOT-BC146176  Avena barbata Lowell Ahart 1989-5-23 6233 Butte Near a new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CHSC9339  Avena sativa B. Anthony 1968-5-17 523 Butte Corner of Pentz Road and Dry Creek Road, Pentz. Comment
  JEPS115263  Baccharis salicifolia subsp. salicifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15443 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  JEPS87167  Balsamorhiza deltoidea Vernon H. Oswald and Lowell Ahart 1992-3-24 4891 Butte Thermalito Diversion Pool Lake Oroville Recreation Area (n side, along the first stream w of spillway and ca 2.0 mi n of Burma Rd.) 76 Comment
  CAS-BOT-BC27831  Balsamorhiza macrolepis H. E. Brown 1897-4-15 208 Butte Near Clear Crerek 53 Comment
  NY162467  Balsamorhiza macrolepis H. E. Brown 1897-5-1 208 Butte Near Clear Creek 53.3 Comment
  CHSC113619  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east of Oroville. 226 Comment
  CHSC46017  Bergia texana Lowell Ahart 1974-9-8 628 Butte Peter Ahart Ranch, about 1-1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC32369  Bidens frondosa J. D. Jokerst 1979-11-13 1229 Butte Table Mountain. Top of North Table Mountain, ca. 100 m N of Cherokee Rd at the E edge of the mountain. 396 Comment
  CAS-BOT-BC102072  Bidens frondosa Forman T. McLean 1921-9-29 23 Butte Chico Comment
  JEPS120856  Bidens tripartita Lowell Ahart 2013-6-18 18802 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  RSA0036989  Bidens tripartita Lowell A. Ahart 2013-6-18 18802 Butte Drained bottom of a duck field, about 20 yards east of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC43711  Bistorta bistortoides Vernon Oswald 1983-7-6 832 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  CAS-BOT-BC412959  Bistorta bistortoides Dr. A. Kellogg 1870-6-21 s.n. Butte Chico Comment
  SEINET11839694  Blennosperma nanum Unknown 1968-1 288 Butte W of N road to Chico Missile Base 61 Comment
  CHSC38021  Boechera breweri R. E. Preston 1981-6-13 87 Butte S side of canyon, middle fork of Feather River at Milsap Bar, ca. 20.5 mi NE of Oroville. 609 Comment
  CHSC473  Boechera breweri subsp. breweri G. Spurlock 1935-2-24 Butte Salmon Hole. Comment
  CHSC10614  Boechera breweri subsp. shastaensis Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC83912  Boechera breweri subsp. shastaensis Lowell Ahart 2003-4-10 10063 Butte On basalt cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 332 Comment
  CAS-BOT-BC14634  Boechera rectissima E. B. Copeland 1929-7-14 367 Butte Jonesville. 1550 Comment
  CHSC20522  Boechera sparsiflora M. S. Taylor 1975-4-29 542 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  RSA715559  Boisduvalia stricta L. Ahart 2005-5-11 11795 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  UCD150349  Bolboschoenus fluviatilis E. Littrell 1972-4-27 s.n. Butte Gray Lodge Wildlife Management Area. Comment
  CAS-BOT-BC75487  Bolboschoenus glaucus L. H. Cloyd 1940-7-3 3 A Butte Gray Lodge Refuge, 9 miles north of Gridley. Comment
  UC1198849  Boykinia major C. M. Wilder 1912-7-18 1696 Butte Martin's Camp Comment
  CAS-BOT-BC145680  Brachypodium distachyon Lowell Ahart 1983-6-21 4062 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1/8 mile west of Oroville Quincy Highway, 1.25 mile south of the Berry Creek School. Northeast of Oroville, section 5. 400 Comment
  SEINET10507663  Brachypodium distachyon Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4062 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CDA3607  Brassica napus L. Ahart 2001-5-1 8739 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC41556  Briza maxima R. L. Ondricek-Fallscheer 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC88979  Briza maxima Christine Hantelman 2000-4-27 83 Butte Around vernal pools on preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  CHSC99643  Briza maxima H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte). UTM 10 633982E 4365709N. 217 Comment
  RSA768991  Briza maxima L. Ahart 2010-5-16 16692 Butte About 0.25 miles south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 369 Comment
  CHSC92546  Briza minor L. P. Janeway 2005-3-10 8346 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  SEINET10753292  Briza minor Christopher 2003-4-21 CHRISTOPHER 229 Butte Off Hwy. 99. Ahart Family Ranch along boundary on access road and edge of field. Vernal pool prairie and roadside ditch. With Limnanthes, Lilaea, Briza and Spergula 41 Comment
  UC184182  Briza minor A. A. Heller 1913-5-25 10762 Butte near Pents 152 Comment
  RSA32795  Brodiaea californica A. A. Heller 1938-5-22 15106 Butte Near the Chico Airport Comment
  SEINET10971333  Brodiaea californica Mary Susan Taylor 1982-6-24 Taylor 4749 Butte T22N R4E se sec 23. Berry Creek quad. On serpentine rdcut, w side of Ponderosa Way (Rim Rd), 0.3 mi n of Jarbo Gap on Hwy 70; ne of Oroville. 2200 ft. 670 Comment
  UC143052  Brodiaea coronaria Mrs. R. M. Austin May 1896 27 Butte Iron Canyon Comment
  UCD77199  Brodiaea coronaria Robert E. Preston 2003-6-13 2157 Butte North Table Mountain, along Cherokee Rd, 1.6 mi N of its jct with Oregon Gulch Rd 426 Comment
  UC726235  Brodiaea elegans subsp. elegans A. A. Heller 1941-5-9 16105 Butte below Clear Creek School House (roadside banks along Clark Road to Paradise) Comment
  CHSC46856  Brodiaea minor R. A. Schlising; P. Broyles 1988-7-9 4575 Butte E of Paradise and Magalia, and N of Oroville and Jarbo Gap; along Rim Road. 792 Comment
  UC1442879  Brodiaea nana Theodore F. Niehaus 1966-4-25 655 Butte at junction of Pentz road and Clark road Comment
  UCD22630  Brodiaea pulchella Joseph Laferriere 1982-4-18 4 Butte Table Mountain, NW of Cherokee Rd., 5 miles north of Oroville. 396 Comment
  SEINET10534140  Brodiaea purdyi Mrs. R. M. Austin 1896-1 Austin 816 Butte Mesa-east of Chico Comment
  CHSC40272  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC101802  Bromus catharticus Lowell Ahart 2009-5-8 15666 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
  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
  JEPS106156  Bromus catharticus Lowell Ahart 2004-8-30 11399 Butte In a walnut orchard, on the north side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  JEPS115992  Bromus catharticus Lowell Ahart 2009-5-8 15666 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
  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
  CHSC102791  Bromus laevipes Lowell Ahart 2009-5-30 15780 Butte About 120 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC85002  Bromus laevipes L. P. Janeway; John Hunt 2003-6-5 7806 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 173 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 299 Comment
  CHSC96867  Bromus laevipes Lowell Ahart 2007-6-3 13969 Butte On the east side of Jordan 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
  CHSC61533  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte On the east side of the dirt road, about 1 mile west of Lost Creek Reservoir. 1188 Comment
  UCD80527  Bromus rubens CNPS SN Foothill Team 2005-5-6 SNFN 0160 a Butte City of Chico, Upper Bidwell Park, on the northwest side of Upper Park Road, directly across from parking area 'M. 149 Comment
  CHSC8177  Bromus secalinus B. Hamilton 1969-5-19 43 Butte Found 6 miles north of Gridley in Hiway 99 along roadside. Comment
  CAS-BOT-BC161501  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of Feather River near Stirling. Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  HSC93416  Bromus tectorum L. Ahart 1995-5-30 7585 Butte S of Beatson Hollow, about 3/4 mi. NW of Cherokee Rd., North Table Mtn., 7 mi. N of Oroville 305 Comment
  RSA4655  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  UCD60257  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. Comment
  CAS-BOT-BC18158  Bulbostylis capillaris J. D. Jokerst 1980-7-18 994 Butte Top of North Table Mountain, ca. 200 meters northwest of junction of Cherokee Road and the east edge of Table Mountain. Comment
  CHSC108058  Bulbostylis capillaris Matt Simenc; Tim Hanson, Melanie Williams, Nicole Habecker 2011-6-22 Butte Northern High Sierra Nevada. Plumas National Forest; northwest facing slopes near the top of the ridge on the southeast side of Martin Creek, 1.9 air miles northeast of Madrone Lake. 755 Comment
  RSA774131  Calamagrostis canadensis L. Ahart 2010-9-21 17222 Butte About 10 yards east of poor dirt road, about 200 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CAS-BOT-BC438359  Calandrinia ciliata A. A. Heller 1914-4-13 s.n. Butte Hills 8 miles north of Oroville Comment
  CHSC12181  Callitriche heterophylla var. bolanderi Lowell Ahart 1973-3-26 186 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC47393  Callitriche heterophylla var. bolanderi Lowell Ahart 1984-5-7 4595 Butte In a small pool, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  JEPS95760  Callitriche heterophylla var. heterophylla Lowell Ahart 1995-5-26 7574 Butte 12 mi S of Oroville (Peter Ahart Ranch, 2 mi N and 1/4 mi E of Honcut) 36 Comment
  CHSC26730  Callitriche marginata M. S. Taylor; M. Hayes 1978-4-14 1560 Butte Vernal pool, on e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 16 mi s of Chico. 30 Comment
  SEINET10531067  Calocedrus decurrens Mary Susan Taylor 1980-5-27 Taylor 2698 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
  UC429160  Calochortus albus Mrs. R. M. Austin 1890-1 30 Butte Butte Creek Comment
  SEINET12048527  Calochortus albus Unknown 1977-1 16 Butte ca 1 m W fo Cherokee Rd, 4 km N of Oroville 152 Comment
  CHSC51939  Calochortus luteus Carl W. Dobson 1980-4-12 10 Butte Ca 15 uds N of dirt rd atop Musty Buck Ridge, 0.5 mi N of Big Chico Cr, 5.0 mi ENE of Chico. 231 Comment
  UC203869  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte 8 mi n Oroville Comment
  CAS-BOT-BC491855  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Grassy hills 8 miles north of Oroville below the quercus Douglasii belt Comment
  CAS-BOT-BC491861  Calochortus luteus A. A. Heller 1914-5-22 11424 Butte Near Richardsons Springs Comment
  CAS-BOT-BC491862  Calochortus luteus Lewis S. Rose 1945-5-12 45047 Butte Richardsons Springs 304 Comment
  UCD13260  Calochortus luteus Dean Dubbe 1974-5-5 10- 3 Butte State Highway 70, 10 miles northwest of Oroville. 274 Comment
  CAS-BOT-BC492566  Calochortus minimus H. F. Copeland 1931-9-6 1513 Butte Jonesville 1524 Comment
  UCR190818  Calochortus monophyllus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  HSC66208  Calochortus monophyllus Laraine Roothoff 1979-5-20 11 Butte 1.05 km. W of Skyway on Bille Rd. at Bille Park, N side of rd., Paradise 518 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
  CHSC80707  Calochortus nudus R. E. Preston 1982-7-1 323 Butte Meadow; ca. 1 mi S of Humbug Summit. 1950 Comment
  CDA14083  Calochortus superbus G. F. Hrusa, T. D. Wilfred 1997-7-3 13967 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries enter from E. Comment
  POM109611  Calochortus superbus C. C. Bruce 1897-05 2117 Butte Butte Creek. Comment
  CDA15391  Calochortus tolmiei G. F. Hrusa 1997-4-3 13689 Butte Sierra Nevada; Immed. above Paradise Lake dam along Old Railroad Grade Rd., approx. 3 m. N of Magalia. Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  CAS-BOT-BC494320  Calochortus tolmiei C. C., Mrs. Bruce 1897-6-1 2407 Butte Foush Ranch Comment
  HSC23361  Calochortus tolmiei J. V. Serrao II 1971-5-5 160 Butte On N banks of Hwy. 32, 19.4 mi. E of Hwy. 32 and Oroville Rd. intersection 244 Comment
  SD1664  Caltha howellii E. B. Copeland June 1930 Butte Jonesville; in meadows by North Willow Creek 1550 Comment
  CHSC46246  Calycadenia fremontii Vernon H. Oswald 1989-5-2 3758 Butte Pasture located S of Broyles Rd and W of Hwy 99 owned by Howard Wurlitzer. 53 Comment
  CAS-BOT-BC273291  Calycadenia fremontii David D. Keck 1933-5-31 2408 Butte Bridge crossing Mud Creek, 2.9 miles west of Richardson Springs Comment
  UC194199  Calycadenia fremontii H. M. Hall 1914-7-19 9761 Butte Richardson Spring, near Chico 91 Comment
  HSC103922  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  UC1971669  Calycadenia multiglandulosa 1977-7-6 2036 Butte 2.1 mi SE of the Quincy-Oroville/Olive Hwy (162), on Forbestown Road (at milepost 59.35, C. oppositifolia (RLC2037) ca. 200 yds E 427 Comment
  SEINET11842848  Calycadenia multiglandulosa subsp. bicolor L. Ahart, Ahart, P. 1984-1 4687 Butte ca 1 mi SE of Hurleton, 1/12 mi E of Oak Grove Cemetery, ca 10 mi E of Oroville 500 Comment
  CAS-BOT-BC106098  Calycadenia oppositifolia A. A. Heller; H. E. Brown 1902-5-9 s.n. Butte Berry Canyon, near Clear Creek Comment
  CHSC75348  Calycadenia oppositifolia Lowell Ahart 1999-6-12 8091 Butte West of the split in the dams and on both sides of the poor dirt road, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  UC1876647  Calycadenia oppositifolia Gerald D. Carr 1973-5-22 736 Butte 0.5 mi S of Chico Municipal Airport on Cohasset Rd. Comment
  UC726317  Calycadenia oppositifolia A. A. Heller 1929-5-15 14876 Butte Richardson Springs Road Comment
  UC727113  Calycadenia oppositifolia A. A. Heller 1940-6-5 15702 Butte e of, Jarboo Pass on the Feather River Highway Oroville 609 Comment
  CAS-BOT-BC270735  Calycadenia pauciflora Bruce G. Baldwin; Gerald D. Carr 1988-6-9 711 Butte Wurlitzer Ranch, 1 mile N of Broyles Road Comment
  UCD129792  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99, at Durham Road, 10 miles southeast of Chico. Comment
  CHSC28385  Calycadenia truncata J. D. Jokerst; M. S. Taylor 1979-10-13 398 Butte Jordan Hill Rd. (Ponderosa Way) 2.55 mi E of junction with the N fork Feather River. 853 Comment
  CHSC28808  Calycadenia truncata J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 410 Butte Top of Table Mt 100 m north of Cherokee Rd. 396 Comment
  CHSC30945  Calycadenia truncata L. Ahart 1980-7-4 2449 Butte On a steep hillside ca. 1/2 mi SE of Hurleton. 600 Comment
  JEPS120559  Calycadenia truncata L. P. Janeway 2012-10-11 11071 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way / Rim Road, near high-voltage power lines. Comment
  JEPS113315  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km north of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. Comment
  CAS-BOT-BC221235  Calystegia malacophylla subsp. malacophylla H. F. Copeland 1920-7-6 39 Butte Jonesville 1219 Comment
  CHSC52019  Calystegia malacophylla subsp. malacophylla L. P. Janeway 1988-4-16 2796 Butte SE-facing slope above Cedar Creek along road 3.9 mi from Lomo. 1249 Comment
  CHSC38399  Calystegia occidentalis Vernon Oswald 1983-5-21 513 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  JEPS115674  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2009-5-30 15775 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 379 Comment
  CAS-BOT-BC496958  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  CHSC90638  Camissonia contorta Lowell Ahart 2005-4-2 11692 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
  JEPS119581  Camissonia contorta Lowell Ahart 2012-4-17 17882 Butte 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. Comment
  SEINET10840318  Campanula prenanthoides Taylor 1978-7-18 Taylor 1673 Butte On west side of Highway 32 on edge of Yellow Pine Forest, in dry open area, about 0.25 mile north of Forest Ranch 718 Comment
  SEINET10458022  Campsis radicans Mary Susan Taylor 1975-6-30 Taylor 823 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC78069  Capsella bursa-pastoris Megan Lee Hudzik 1998-4-16 20 Butte Bidwell Park, 50 m w of Horseshoe Lake, 6 miles s of Bidwell Mansion. Next to a stream. 91 Comment
  JEPS122192  Capsella bursa-pastoris Lowell Ahart 2014-4-16 19360 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
  UCD114531  Cardamine Robert E. Preston 1983-2-7 380 Butte above the SW bank of McCabe's Creek, at its junction with Lumpkin Road, 10 miles E of Oroville. 371 Comment
  POM196110  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  JEPS98767  Cardamine nuttallii Dean W. Taylor 1997-3-13 15915 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CHSC29224  Cardamine oligosperma M. S. Taylor; J. D. Jokerst 1980-3-28 2406 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  SEINET10448559  Cardamine oligosperma Mary Susan Taylor 1979-3-31 Taylor 1966 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC62722  Cardamine pachystigma B. Castro 1993-3-31 461 Butte Ca 1.5 mi E of Mtn House, on N side Four Mile Ridge Road (or USFS Rd 22N33), 0.4 mi W of its jcn with the Oro-Quincy Hwy. On ridgetop. 944 Comment
  JEPS53388  Cardamine pachystigma unknown 1933-5-1 Butte Oroville Comment
  CHSC105671  Carex abrupta Lowell Ahart 2010-9-21 17200 Butte About 50 yards east of the poor dirt road, about 100 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1917 Comment
  CHSC94345  Carex amplifolia Lowell Ahart 2006-7-16 12968 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
  HSC87283  Carex amplifolia L. P. Janeway 1988-6-14 2775 Butte Near W branch Butte Creek, 2 mi. E of Hwy. 32, at Ewalt Camp 922 Comment
  CHSC53753  Carex angustata L. P. Janeway 1986-9-1 1832 Butte East end of Philbrook Reservoir. 1691 Comment
  SEINET7549691 Image available Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  CAS-BOT-BC18052  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  POM218976  Carex athrostachya E. B. Copeland 1928-7-28 s.n. Butte Jonesville. 1700 Comment
  CHSC42371  Carex aurea Lowell Ahart 1987-5-22 5678 Butte Near the dirt road, about 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC81925  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  CHSC45075  Carex bolanderi Vernon Oswald 1987-5-12 2392 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 Comment
  CHSC54113  Carex bolanderi Vernon H. Oswald; Lowell Ahart 1991-5-13 4583 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). On the edge of Palermo Canal. 170 Comment
  CHSC95226  Carex bolanderi L. P. Janeway 2006-8-6 8827 Butte Northern High Sierra Nevada. Near road along west side of lower Pinkard Creek, 1.2 mi north of Lost Creek Reservoir dam. 1021 Comment
  CHSC48540  Carex brainerdii L. P. Janeway; R. A. Schlising 1988-4-24 2640 Butte Along Humboldt Rd 1.9 mi from Hwy 32; Carpenter Ridge. 1371 Comment
  JEPS116653  Carex crawei L. P. Janeway 2009-5-25 9796 Butte Campus of California State University, Chico Chico (between Merriam Library, the new student services building,and Warner Ave.); Sacramento Valley 59 Comment
  SEINET4289436 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 A Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CHSC95030  Carex cyrtostachya L. P. Janeway 2006-8-6 8826 Butte Northern High Sierra Nevada. Near road along west side of Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  SEINET10785816 Image available Carex cyrtostachya Peter F. Zika 2011-7-6 Zika 25536 Butte Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH). 1040 Comment
  UCR7845  Carex dudleyi Marilyn Malin 1968-4-19 245 Butte W side of Cherokee Road, c. 2 mi south of Cherokee, & 100 yards east of the Cherokee Graveyard 405 Comment
  CHSC28866  Carex feta J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 431 Butte Along edges of first drainage northwest of jct east edge of Table Mt and Cherokee Rd. Comment
  RSA770105  Carex feta L. P. Janeway, B. Castro 2009-7-4 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  SEINET10650513  Carex feta Lowell Ahart 1987-5-6 Ahart 5544 Butte On damp to dry sand, along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC42949  Carex fracta Lowell Ahart 1987-7-8 5797 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  UCD140345  Carex fracta L. P. Janeway; R. A. Schlising, B. Castro, P. Broyles 1987-7-19 2502 Butte Coon Hollow, 1.0 mile SE of the Humbug Summit Road. 1661 Comment
  CHSC106467  Carex gracilior Peter F. Zika 2009-6-17 24509 Butte Cascade Range Highlands (CaRH). Partly shaded margin of small unnamed creek, SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC110987  Carex gracilior Lowell Ahart 2012-5-17 18085 Butte On both sides of the horse trail, 10 to 50 feet north of the poor dirt road, about 100 feet south of Larch, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 73 Comment
  CHSC61651  Carex heteroneura var. heteroneura Lowell Ahart 1993-9-8 7157 Butte On the north side of the ridge, about 1 mile east of Snow Mountain. 2072 Comment
  CHSC47057  Carex hirtissima L. P. Janeway 1989-5-17 3243 Butte Along edge of Lower Forbestown Rd (a dirt road) 0.1 mi N of Forbestown Rd. 798 Comment
  SEINET7561551 Image available Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte Pulga 7.5' Quad. High Cascade Range. Flea Valley, meadow at head on Concow Creek. 1116 Comment
  SEINET7561557 Image available Carex hirtissima Lewis S. Rose 1937-6-10 37375 Butte Forbestown. 838 Comment
  CHSC52910  Carex integra L. P. Janeway 1987-7-5 2459 Butte Meadow near Dresser Camp, 3.0 mi N of Jones Meadow along road to Philbrook Reservoir. 1889 Comment
  CAS-BOT-BC94042  Carex inversa Peter F. Zika 2010-5-16 24826 Butte Robinson Street near Lincoln Street, Oroville, Ahart's station, Sacramento Valley (ScV) 50 Comment
  CHSC52916  Carex jonesii L. P. Janeway 1988-7-2 2945 Butte Marsh-meadow at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CAS-BOT-BC31120  Carex lemmonii V. Oswald; Lowell Ahart 1988-6-17 3403 Butte Pinkard Creek ca. 1.5 mi N of Lost Creek Reservoir. 1066 Comment
  UC478550  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville 457 Comment
  CAS-BOT-BC32163  Carex multicaulis A. A. Heller 1913-6-7 10794 Butte Near Stirling 1036 Comment
  CAS-BOT-BC32157  Carex multicaulis Lewis Samuel Rose 1937-6-10 37366 Butte 8 mi E of Hurleton 792 Comment
  UCD140658  Carex multicaulis L. P. Janeway 1987-6-8 2170 Butte west facing slope on Swayne Hill, around 10 miles south of Big Bar Mountain via dirt road. 731 Comment
  SEINET7568665 Image available Carex nebrascensis Unknown 2004-8-15 8244 Butte Butte Meadows 7.5' quad. High Cascade Range, meadow along southeast side of Skyway (Humbug Summit Road), at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  HSC87281  Carex nervina L. P. Janeway, Robert A. Schlising 1988-7-16 3012 Butte Along Willow Creek, 1 mi. W of Humbug Rd. 1799 Comment
  UC1108039  Carex nervina H. F. Copeland 1932-8-22 Butte Butte Creek Crest Butte Creek Comment
  CAS-BOT-BC119558  Carex nudata A. A. Heller 1913-6-7 10818 Butte West Branch of the North Fork of the Feather river near Stirling. 914 Comment
  CDA2571  Carex pendula L. P. Janeway 2004-6-2 8137 Butte Sacramento Valley; South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek. Comment
  RSA769169  Carex pendula P. F. Zika 2010-5-16 24824 Butte Shores of Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico, Janeway s station, Sacramento Valley 45 Comment
  UCD140554  Carex pendula Peter F. Zika 2010-5-16 24824 Butte both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, SW of Chico. W of Janeway's Station. Sacramento Valley. 45 Comment
  CAS-BOT-BC117986  Carex rossii John Thomas Howell 1962-6-16 37537 Butte Magalia 731 Comment
  JEPS118051  Carex simulata Lowell Ahart 2011-8-23 17645 Butte Along a small stream, in the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  HSC87282  Carex stipata var. stipata L. P. Janeway 1987-6-8 2175 Butte Jack Creek, 8.6 mi. S of Big Bar Mtn. via dirt road 747 Comment
  CHSC106161  Carex subfusca Peter F. Zika 2009-6-17 24515 Butte Cascade Range Highlands (CaRH), below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC52875  Carex subfusca L. P. Janeway; Patty Costello 1987-9-5 2577 Butte NW side of Big Chico Cr below the road to Soda Springs campground, near Hwy 32. 1127 Comment
  CHSC52877  Carex subfusca L. P. Janeway 1987-6-19 2231 Butte Along Sly Cr, 2.1 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC83287  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7616 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  CAS-BOT-BC115304  Carex utriculata L. P. Janeway 1987-7-5 2460 Butte Open dryish meadow near Dresser Camp, 3.0 mi N of Jones Meadow, 1889 Comment
  CHSC113951  Carex vesicaria Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC43868  Carex whitneyi Vernon Oswald 1983-8-17 985 Butte Humboldt Summit on Humboldt Rd. n-e of Jonesville at the jct. of Butte, Tehama, and Plumas Counties. 1999 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
  SEINET10367321  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Highlands, Magalia Serpentine, Coutolenc Rd., 0.1 miles N. of Skyway Rd 720 Comment
  UCD140189  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada. Near summit of SSE slope above Little Butte Creek, N of Magalia. Immediately east of Holmwood Drive. 750 Comment
  CHSC115404  Castilleja affinis M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CAS-BOT-BC249116  Castilleja affinis Lowell Ahart 1990-3-28 6430 Butte On the south side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville 39 Comment
  CHSC39267  Castilleja applegatei subsp. pinetorum Lowell Ahart 1983-6-30 4177 Butte About 1 1/2 miles north-east of Concow Res. Section 1. 550 Comment
  POM173734  Castilleja applegatei subsp. pinetorum H. F. Copeland 1927-4-2 952 Butte Jonesville. Comment
  SEINET10549340  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-4-5 Taylor 3484 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  JEPS124006  Castilleja attenuata Lowell Ahart 2015-4-18 20043 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  JEPS124165  Castilleja attenuata Lowell Ahart 2015-3-27 19970 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 of Oroville. Comment
  CHSC112905  Castilleja campestris B. Castro; Robin Carter 2011-4-29 1875 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Road. 34 Comment
  CHSC35073  Castilleja lacera R. Schlising; P. Broyles 1979-5-15 3406 Butte NE of Magalia and N of Sawmill Peak. 701 Comment
  CHSC87560  Castilleja lacera R. D. Fischer 2004-4-9 63 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 320 Comment
  CHSC97368  Castilleja lacera Paul Maslin 2005-5-1 47 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106096636E 4409708N. 268 Comment
  JEPS80632  Castilleja lacera M. S. Taylor 1980-5-15 2624 Butte ca 0.25 mi e Cohasset Rd. (ca 9 mi ne of Chico); Cohasset Ridge 396 Comment
  UCD122595  Castilleja lacera Gerald D. Carr 1972-5-9 698 Butte Hurleton, ca. 10 mi. E of Oroville on Forbestown Rd. Comment
  JEPS124169  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte About one mile north of suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. Comment
  UC492735  Castilleja miniata H. F. Copeland 1930-7-25 Butte Jonesville; meadow below cabin Comment
  CAS-BOT-BC56924  Ceanothus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada. 5 mi. below Magalia on Oroville Road 609 Comment
  CAS-BOT-BC48548  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville 1550 Comment
  LA41969  Ceanothus cordulatus E. B. Copeland; 1929-7-14 382 Butte Jonesville 1550.0 Comment
  CAS-BOT-BC49179  Ceanothus cuneatus Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC111155  Ceanothus cuneatus var. cuneatus Lowell Ahart 2012-6-9 18179 Butte On the north side of Guardian Trail, about 50 yards southwest of Tem Mile House Road, about 1/8 mile west of Highway 32, Upper Bidwell Park, about 9 miles northeast of Chico. 411 Comment
  HSC18286  Ceanothus integerrimus L. S. Rose 1968-6-12 68112 Butte Feather River Canyon, Pulga 488 Comment
  CHSC55404  Ceanothus integerrimus var. macrothyrsus C. G. Morris 1991-4-18 14 Butte Collected 60 yds n of Castle Dr., 0.6 mi w of Oliver Rd., Paradise. 533 Comment
  RSA25681  Ceanothus jepsonii Carl B. Wolf 1941-7-23 11048 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  CAS-BOT-BC51728  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope fo the Sierra near Forest Ranch 822 Comment
  CAS-BOT-BC51733  Ceanothus lemmonii Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  CHSC31411  Ceanothus lemmonii Debra Dockrey 1980-4-21 4 Butte Ca 10 mi n of Chico. 426 Comment
  CAS-BOT-BC52002  Ceanothus prostratus A. A. Heller 1915-6-11 11971 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CAS-BOT-BC83773  Ceanothus prostratus D. O. Burge 2007-5-11 921 a Butte East shore of Lake de Sabla 850 Comment
  CHSC1516  Ceanothus prostratus 1937-4-1 Butte Paradise. 609 Comment
  UC2026878  Cedrus deodara Lowell Ahart 2012-10-12 18483 Butte About 50 yards east of the east side of the Deer Pen, east of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. Comment
  UC2026880  Celtis occidentalis Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18271 Butte Path in Cedar Grove, west parking area, Lower Bidwell Park, Chico. Comment
  JEPS118609  Celtis sinensis L. P. Janeway, B. Castro 2010-6-4 9991 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. Richardson Springs 7.5' quad. Comment
  CDA35494  Centaurea maculosa Ed Finley 2006-6-26 PDR# 1365082 Butte Paradise; Edgewood Lane. 0 Comment
  RSA718333  Centaurea melitensis L. Ahart 2006-6-9 12659 Butte 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 2.75 air miles southwest of Pulga 386 Comment
  UCD130046  Centaurea melitensis L. E. Hazeltine 1916-6-27 s.n. Butte Chico. Comment
  CHSC114165  Centaurea solstitialis Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16791 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  JEPS117547  Centaurium muehlenbergii Lowell Ahart 2010-6-20 16828 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville 59 Comment
  CHSC28516  Centaurium tenuiflorum M. S. Taylor; J. D. Jokerst 1979-10-13 2271 Butte Wet spot near creek on Jordan Hill Rd, (Ponderosa Way on some maps) ca. 1.5 mi n of Sawmill Peak, ca. 10.7 mi n of JH Rd jct with Concow Rd, ca. 2 mi ne of Magalia. 853 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
  JEPS46925  Centaurium venustum H. A. Dutton 1921-1 Butte e of Chico Comment
  CHSC98895  Centranthus ruber L. P. Janeway 2007-12-11 9223 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, east side Table Mountain Blvd bridge. Growing among rock outcrops just above river high water line. 40 Comment
  CAS-BOT-BC288534  Centromadia fitchii John Thomas Howell 1959-9-20 34682 Butte Eastern outskirts of Oroville 60 Comment
  CHSC45957  Centunculus minimus Lowell Ahart 1979-5-11 1868 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. On the bottom of a depression in a grain field. 36 Comment
  CHSC61523  Cephalanthera austiniae Lowell Ahart 1993-6-16 6963 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) south-west of Forbestown. 609 Comment
  SEINET10470077  Cephalanthera austiniae Mary Susan Taylor 1982-6-24 Taylor 4746 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  JEPS117150  Cerastium glomeratum Lowell Ahart 2010-4-30 16582 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 369 Comment
  CDA36293  Ceratophyllum demersum Ed Finley? Jul 1987 Butte Sacramento River, Mile 195, east bank. [Near Hamilton City] 0 Comment
  JEPS115830  Cercis occidentalis Lowell Ahart 2009-4-26 15620 Butte On the east side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  POM89488  Cercocarpus betuloides C. C. Bruce 1897-04 1817 Butte Big Chico Comment
  CAS-BOT-BC137006  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte Chico Creek lower end of Iron [canon] Canyon Comment
  UC600735  Chaenactis douglasii var. douglasii E. B. Copeland 1930-7-1 Butte above Jonesville 2000 Comment
  CHSC35668  Chaenactis glabriuscula var. heterocarpha R. E. Preston 1982-4-22 259 Butte 100 ft n of Lake Oroville, ca. 0.9 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 289 Comment
  SACT000736  Chaetochloa viridis Herbert Copeland 1923-5-11 Butte Comment
  CHSC102983  Chamaesyce maculata Lowell Ahart 2009-8-15 16283 Butte Garden area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC109761  Chamaesyce maculata Lowell Ahart 2012-10-20 18498 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS115678  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville 41 Comment
  JEPS120594  Chamaesyce maculata Lowell Ahart 2013-11-18 19276 Butte Below the high-water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  RSA726363  Chamaesyce maculata L. Ahart 2007-7-2 14242 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 Comment
  RSA754388  Chamaesyce maculata L. Ahart 2009-7-3 15987 Butte E side of the road, 30 yards SE of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards E of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC31678  Chamaesyce ocellata L. Ahart 1976-7-4 1153 Butte Pasture fields. Peter Ahart Ranch, Honcut. 45 Comment
  JEPS13271  Chamaesyce ocellata Rimo Bacigalupi with G. T. Robbins 1955-7-15 5300 Butte 3.5 mi s Chico (0.5 mi s of the Hooker Oak) 80 Comment
  CDA35250  Chamaesyce ocellata T. C. Fuller 1962-8-6 9332 Butte North of Hwy 99E to Chico, 1.2 miles south of Tehama/Butte County line. 0 Comment
  CHSC75965  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart; Vernon H. Oswald 1999-8-13 8161 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
  CHSC78230  Cheilanthes gracillima Lowell Ahart 2000-6-27 8518 Butte Around large granite rocks, Big Bald Rock, about 3 miles (air) east of madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET10529937  Cheilanthes siliquosa Mary Susan Taylor 1979-10-13 Taylor 2273 Butte T23N R4E e center sec 29. Serpentine outcrop on Jordan Hill Road (Ponderosa Way on some maps), ca. 11.1 mi N of its jct with Concow Road, 1.9 mi N of Sawmill Peak, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  JEPS95916  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1999-8-22 8183 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
  CHSC61974  Chenopodium strictum var. glaucophyllum Vernon H. Oswald 1993-10-19 5955 Butte N side of West East Ave., Chico, between Cussick and Alamo avenues. 51 Comment
  JEPS87387  Chimaphila menziesii Lowell Ahart 1993-7-29 7129 Butte ca. 6 1/2 mi. n.e. Stirling City (ca. 1/8 mi. s.w of Snow Mine, ca. 2 1/2 mi. e. of Bald Mt.) 1463 Comment
  CAS-BOT-BC451371  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  CAS-BOT-BC451372  Chimaphila menziesii E. B. Copeland 1930-7-27 433 Butte Jonesville, along Butte Creek 1600 Comment
  CAS-BOT-BC451483  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  CHSC30760  Chimaphila umbellata M. S. Taylor 1978-9-9 1907 Butte Bull Run Rd., ca. 50 ft. w of the rd, ca. 10 mi s of Butte Meadows. 1463 Comment
  SEINET3451380  Chloris virgata Unknown 2006-8-2 6 .337 Butte East of Butte City, East of Butte City, along Ord Ferry Road, east of old Sacramento River district 30 Comment
  POM110261  Chlorogalum angustifolium C. C. Bruce 1897-04 1838 Butte [No locality information provided] Comment
  CAS-BOT-BC498819  Chlorogalum pomeridianum John Thomas Howell 1962-6-15 37426 Butte Volcanic slopes, 4 miles from Paradise on road to Oroville 106 Comment
  CAS-BOT-BC252835  Chorizanthe polygonoides var. polygonoides Lowell Ahart 1979-5-7 s.n. Butte 2 1/2 mi. SE of Paradise 472 Comment
  CHSC43863  Chorizanthe polygonoides var. polygonoides Vernon Oswald 1988-4-4 3266 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the northeast part of the ranch. 60 Comment
  CHSC84285  Chorizanthe stellulata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10218 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1 1/2 miles east of Manzanita Avenue, Chico. 103 Comment
  CHSC29024  Cicendia quadrangularis M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2441 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  SEINET12328380  Cicendia quadrangularis M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5398 Butte ca 0.5mi n of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise? Comment
  SD3366  Circaea alpina subsp. pacifica E. B. Copeland 1929-7-20 Butte 1500 Comment
  RSA0070562  Cirsium andersonii H. F. Copeland 1928-8-14 1003 Butte Neighborhood of Jonesville. 1829 Comment
  SEINET10971148  Cirsium coulteri Mary Susan Taylor 1975-6-30 Taylor 821 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  SD5918  Cirsium douglasii var. breweri E. B. Copeland 1930-7-28 Butte Jonesville 1600 Comment
  CAS-BOT-BC288041  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  CAS-BOT-BC288042  Cirsium occidentale var. venustum John Thomas Howell 1955-6-15 30487 Butte 6 miles from Paradise on raod to Pentz, Sierra Nevada 426 Comment
  CAS-BOT-BC228754  Cistanthe umbellata E. B. Copeland 1930-6-28 s.n. Butte Jonesville; Scotch John 1750 Comment
  UC1071946  Clarkia arcuata H. and M. Lewis 1951-5-19 826 Butte 1.6 mi below Nimshew (Nimshew to Butte Creek Canyon) Comment
  CAS-BOT-BC163544  Clarkia arcuata Mrs. C. C. Bruce 1897-4-1 1956 Butte Unspecified Comment
  SEINET12192686  Clarkia arcuata S. M. Grossberg 1978-1 18 Butte Small population, North Table Mountain, ca 1.2 mi NNE of Cherokee Road, 6.0 mi N. of Oroville 373 Comment
  UCD103993  Clarkia arcuata Katherine Lahey 1981-4-16 33 Butte Table Mountain. 0.6 mile E of Cherokee Road and Table Mountain Blvd. junction, on Cherokee Road. 365 Comment
  CAS-BOT-BC164517  Clarkia gracilis subsp. albicaulis Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC25259  Clarkia gracilis subsp. albicaulis M. S. Taylor 1977-6-26 1380 Butte In ditch on s side of Ponderosa Way, ca. 1 1/2 mi e of Cohasset. 609 Comment
  CHSC88059  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1.4 miles s. of this junction. Close to rd. on uphill side. For the next 3 miles. 643 Comment
  JEPS95170  Clarkia mildrediae Lowell Ahart 1997-7-11 7743 Butte about 2 air mi sw of Bald Mountain (about 9 mi by road from Stirling City, or about 2 air mi ne of Stirling City, on n side of dirt road, se of Cold Creek) 1219 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
  CHSC35144  Clarkia purpurea subsp. quadrivulnera R. Schlising; R. Banchero 1980-6-6 3648 Butte N of Lake Oroville along Hwy 162, 1.7 mi N of Bidwell Bar Bridge crossing of the lake. Roadside bank. 304 Comment
  CHSC42364  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1987-5-22 5667 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC48629  Clarkia purpurea subsp. viminea Vernon Oswald 1988-6-14 3377 Butte Jordan Hill Rd. between Coutolenc Rd. and the West Branch of the Feather River. 512 Comment
  CAS-BOT-BC164776  Clarkia rhomboidea Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  CAS-BOT-BC164790  Clarkia rhomboidea H. Lewis; M. Lewis 1951-5-1 824 Butte Rd. from Oroville to Magalia, 1.65 mi. S. of Rd. to Paradise Comment
  CHSC30066  Clarkia rhomboidea R. A. Schlising 1980-5-26 3601 Butte Several mi sw village of Cohasset, along fire road e of Cohasset Road. 411 Comment
  CHSC59112  Clarkia rhomboidea L. P. Janeway 1991-6-1 3977 Butte East-facing cut-bank of Dark Canyon Road 0.4 mi south of Big Bend Road/Parkhill. Near canyon bottom. 560 Comment
  HSC95777  Clarkia rhomboidea L. P. Janeway 1993-6-23 4395 Butte Upper end of Galen Ridge 250 ft. NW of Bald Rock Rd., 0.7 mi. SW of Oroville-Quincy Hwy. 1037 Comment
  SD122550  Clarkia rhomboidea Lowell Ahart 1984-6-8 4663 Butte At the Ponderosa Dam, ca. 2 miles NW of Forbestown; Yellow Pine Forest, 370 Comment
  POM271488  Clarkia rhomboidea J. W. Morrison 1929-06 s.n. Butte Oroville-Quincy. Sierra Nevada mtn range. Feather River watershed. Comment
  SEINET10453164  Clarkia rhomboidea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4118 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  UC1186581  Clarkia rhomboidea G. I. Stage, R. W. Thorp 1959-6-21 59 -118 Butte Tehama-Butte County Line and Highway 32 Comment
  CHSC1117  Clarkia xantiana J. Wakeman 1963-5-18 Butte In College Greenhouse. 57 Comment
  CAS-BOT-BC439110  Claytonia exigua subsp. exigua A. A. Heller 1919-3-29 13094 Butte Feather River near Yankee Hill Comment
  CHSC56066  Claytonia palustris L. P. Janeway 1988-7-29 3103 Butte Along Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). 1325 Comment
  CHSC93511  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Rd., where a main tributary joins Battle Creek. 1500 Comment
  NY342211  Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville; above south bank of Jones Creek, 0.4 km east of the Jonesville Hotel 1550 Comment
  JEPS87429  Claytonia parviflora subsp. grandiflora Vernon H. Oswald and Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail ene Magalia (between Jordan Hill Rd and Sawmill Peak Lookout) 740 Comment
  CHSC109115  Claytonia parviflora subsp. parviflora Lowell Ahart 2012-3-23 17802 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC46725  Claytonia parviflora subsp. parviflora Lowell Ahart 1978-4-19 1653 Butte Along the trail to Feather Falls, north of Frey Creek, about 3 miles north of Feather Falls. 548 Comment
  CHSC56760  Claytonia perfoliata Jan Monelo 1989-4-5 1 Butte At base of Pinus ponderosa and Umbellularia californica, 609 Elliott Rd, Paradise. 548 Comment
  RSA712990  Claytonia perfoliata L. Ahart 2006-4-28 12546 Butte 3/4 mile NW of Iron Gate along Cherokee Road, N TAble Mtn, 7 miles air N of Oroville 318 Comment
  SFV1192  Claytonia perfoliata M. L. Vincent 1961-3-29 27 Butte Sacramento Valley Chico. Bidwell Park. 100 Comment
  CHSC103969  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2010-5-7 16614 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC37618  Clematis lasiantha T. B. Devine 1979-7-8 581 Butte Along Hwy 32, ca. 1/2 mi below T.V. cable antenna, ca. 11 mi N of Chico. Comment
  SEINET12319539  Collinsia grandiflora Unknown 1973-1 14 Butte ca 5 mi NE of Oroville, on top of Table Mt., 20 yds off E side of Old Cherokee Rd Comment
  JEPS81035  Collinsia sparsiflora var. collina J. P. Smith Jr. 1973-3-22 5914 Butte 2.1 mi E of junction with US 99 and the road to Paradise, California. 121 Comment
  CHSC43513  Collinsia tinctoria Lowell Ahart 1976-7-7 1170 Butte Along the edge of the road to the Little North Fork of the Feather River, about 2 miles north-east of Junction House. 1219 Comment
  SD147485  Collinsia tinctoria Lowell Ahart 1980-6-19 2383 Butte Along Swedes Flat Road, near Bangor 320 Comment
  CHSC27959  Collinsia torreyi M. S. Taylor 1978-7-19 1768 1/2 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  POM219432  Collomia grandiflora E. B. Copeland 1931-6-14 677 Butte Jonesville. 1550 Comment
  CHSC34995  Collomia heterophylla R. A. Schlising 1980-6-2 3620 Butte Along Highway 32, 10.3 mi N of jct with Forest Ranch Road in village of Forest Ranch; at roadside. Comment
  CHSC62774  Collomia heterophylla L. P. Janeway 1993-6-9 4373 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. Slope above French Creek. 621 Comment
  RSA409228  Collomia heterophylla M. M. Boney 1897-1 1724 Butte [No locality information provided] Comment
  UC478479  Collomia linearis E. B. Copeland 678 Butte Jonesville Comment
  CHSC94493  Collomia tinctoria Lowell Ahart 2006-8-15 13190 Butte East part of a large meadow with bogs, 5 yards west of Willow Creek, about 100 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  SEINET10870113  Convolvulus arvensis Mary Susan Taylor 1982-5-22 Taylor 4499 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CAS-BOT-BC286063  Conyza canadensis A. A. Heller 1914-8-13 11680 Butte 8 miles north of Oroville Comment
  CHSC46684  Cordylanthus pilosus subsp. hansenii Vernon H. Oswald 1989-8-12 3933 Butte Wurlitzer Unit, Vina Plains Preserve. On the edge of Pine Creek just downstream from the mouth of Singer Creek. 54 Comment
  JEPS66509  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2766 Butte Nimshew (site), nw of Magalia 853 Comment
  CHSC6030  Cornus alternifolia M. MacArthur 1968-6-19 230 Butte SE side Big Chico Creek near PSA bld. bridge, Chico State College. 60 Comment
  UC57377  Cornus nuttallii H. E. Brown 1896-10-1 108 Butte near Love Locks 335 Comment
  CHSC49700  Cortaderia selloana Vernon Oswald 1987-9-9 3240 Butte Butte Creek Preserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi e of the diversion dam for Crouch Ditch. On the bottom of a dredger pond. 80 Comment
  UC854991  Corydalis caseana subsp. caseana A. A. Heller 1915-6-11 12047 Butte Jonesville Sierra Nevada, Jonesville 1676 Comment
  CHSC115007  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Above the retaining wall, just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. 68 Comment
  JEPS106291  Cotula australis Lowell Ahart 2004-3-12 10703 Butte Grave of Tillie Moody, east of the entrance gate, Thompson Flat Cemetery, about 1/8 mile east of Cherokee Road, about 1 mile north of Oroville 61 Comment
  CHSC29005  Cotula coronopifolia M. S. Taylor 1980-4-4 2463 Butte SW corner of jct of Melody Lane and Palermo-Honcut Hwy, ca. 12 mi s of Oroville. 38 Comment
  CHSC26736  Crassula connata M. S. Taylor; M. Hayes 1978-4-14 1552 Butte E of Williams Rd ca. 1/4 mi n of Pentz Rd on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  CHSC46737  Crassula connata Lowell Ahart 1974-4-11 387 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10449709  Crassula erecta Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4853 Butte Serpentine Point, west of Yankee Hill. Comment
  CHSC46740  Crassula saginoides Lowell Ahart 1978-5-15 1725 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC26720  Crassula tillaea Hayes; Taylor 1978-4-14 151 Butte On the east side of Williams road, approx. 1/4 mi n of Pentz road on the Butte College Campus. 65 Comment
  CHSC31173  Crassula tillaea M. S. Taylor 1980-4-16 2492 Butte Lake Oroville State Recreation Area, ca. 1/4 mi s of Parish Camp just s of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC82225  Crassula tillaea Lowell Ahart 2002-4-10 9479 Butte Along the edge of the gravel roads, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  UC485366  Crepis occidentalis H. F. Copeland 1931-6-11 1532 Butte near Butte Creek Meadows; Jonesville 1828 Comment
  CHSC44891  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC376471  Crepis pleurocarpa Lowell Ahart 1985-6-30 5087 Butte 100 yards south of the road to the Forbestown Res., near the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  SD8855  Crocidium multicaule R. M. Austin 1883-1 Butte Comment
  SBBG19380  Croton setiger H. F. Copeland 1937-7-30 1604 Butte foothills, near Oroville Comment
  CHSC51010  Crucianella angustifolia Lowell Ahart 1990-7-4 6550 Butte About 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  SEINET10500614  Crucianella angustifolia Mary Susan Taylor 1979-5-6 Taylor 1994 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  POM313218  Crypsis schoenoides H. L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  CHSC111231  Cryptantha 2012-5-31 Butte Comment
  HSC96916  Cryptantha intermedia L. Ahart 2006-6-9 12656 Butte N side of Bardees Bar Rd., E of the large stream, about 1/10 mi. N of the bridge across the N Fork of the Feather River at Bardees Bar, about 2.75 mi. SW of Pulga 355 Comment
  SEINET10497508  Cryptantha intermedia Lowell Ahart 1985-5-15 Ahart 4966 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  POM304533  Cryptantha milobakeri L. S. Rose 1939-6-7 39246 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  CHSC44614  Cryptogramma acrostichoides Vernon Oswald 1987-7-13 3110 Butte Summit Lake on the n side of Snow Mt, ca. 4 mi (air) se of Jonesville. 1901 Comment
  CAS-BOT-BC85565  Cupressus macnabiana C. B. Wolf; E. R. Johnson 1934-10-5 6161 Butte Sierra Nevada Foothills, At Magalia 701 Comment
  CHSC23370  Cupressus macnabiana Robert Schlising 1974-5-19 3130 Butte Just N of Magalia, on Coutelenc Road above the Magalia Reservoir. Comment
  NY16699  Cupressus macnabiana A. A. Heller 1918-5-5 13009 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
  POM173662  Cupressus macnabiana H. F. Cofeland 999 Butte Near Magalia Comment
  SEINET10966023  Cupressus macnabiana John G. Lemmon 1895-12-2 Lemmon s.n. 1895 Butte Magnalia Comment
  JEPS93811  Cuscuta californica Lowell Ahart 1998-7-19 8048 Butte along Hurleton Swedes Flat Road 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  CHSC26650  Cuscuta pentagona M. S. Taylor 1977-11-10 1508 Butte N side of Crouch Rd, at jct of Crouch and Lone Pine Aves., ca 4 mi s of Chico. 45 Comment
  CHSC55056  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte North side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), east of Oroville-Quincy Hwy, about 5 miles (air) north-east of Brush Creek. 1097 Comment
  UC478481  Cuscuta suksdorfii E. B. Copeland 1931-7-17 676 Butte near head of South Willow Creek; Jonesville 1700 Comment
  CHSC113125  Cynodon dactylon Lowell Ahart 2013-11-18 19284 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC4715  Cynoglossum grande R. Carter 1966-3-13 295 Butte Found ca. 6 mi. E of Chico at intersection of Honeyrun Rd. and Humbug Rd in Butte Cr. Canyon. Ca. 150 yds. up slope on S side of canyon. 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
  CAS-BOT-BC190393  Cynosurus echinatus Lowell Ahart 1987-5-6 5555 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  JEPS119884  Cynosurus echinatus Lowell Ahart 2012-6-2 18142 Butte South edge of Truex Road, about 40 yards east of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CDA38929  Cyperus difformis L. Ahart 2002-9-7 9930 Butte East side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mi. north of Oroville. Comment
  CAS-BOT-BC114735  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte In rice plots; Biggs Rice Experiment Station. Comment
  SEINET10466974  Cyperus difformis Mary Susan Taylor 1979-11-11 Taylor 2282 Butte T20 N R1E. Ca. 6 mi S of Chico, on W side of Goodspeed-Watt Road. With Jim Jokerst. 34 Comment
  CHSC4368  Cyperus eragrostis M. Hillier 1966-5-29 Butte In dry creek bed along Manzanita Ave. Chico. Comment
  CHSC76299  Cyperus eragrostis Lowell Ahart 1999-9-21 8272 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
  UC1100533  Cyperus eragrostis Herbert L. Mason and Verne Grant 1946-8-15 13049 Butte near caretaker's house Greylodge Game Refuge (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  UC1100518  Cyperus erythrorhizos Herbert L. Mason 1945-9-19 12738 Butte Gray Lodge Game Refuge n.w. Pennington; Gray Lodge Game Refuge Comment
  UCD169398  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CHSC43785  Cyperus esculentus Vernon Oswald 1987-7-23 3145 b Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CHSC43787  Cyperus esculentus Vernon Oswald 1982-7-19 Butte Upper Bidwell Park, Chico, just downstream from the diversion dam on Lindo Channel. 79 Comment
  JEPS95920  Cyperus esculentus Lowell Ahart 1999-8-13 8141 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  SEINET13711402  Cyperus flavescens Lowell William Ahart, Lowell William Ahart 1999-1 8143 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend Comment
  CHSC100229  Cyperus fuscus John Dittes 2003-10-8 850 Butte Undesignated section of Arroyo Chico Land Grant; Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  JEPS119909  Cyperus fuscus Lowell Ahart 2012-10-20 18500 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC109757  Cyperus niger Lowell Ahart 2012-10-20 18502 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. 68 Comment
  CHSC43528  Cyperus niger Lowell Ahart 1979-9-8 2019 Butte Along the edge of old Highway 40, about 1/2 mile west of Oroville Dam, about 6 miles east of Oroville. 167 Comment
  UCD141197  Cyperus niger John Thomas Howell 1959-9-20 34639 Butte eastern outskirts of Oroville. 60 Comment
  CHSC31694  Cyperus rotundus E. Bevan; L. Bevan 1974-11-24 Butte In garden of Ernes and Lorene Bevan, near Honcut. 33 Comment
  CAS-BOT-BC114209  Cyperus strigosus John Thomas Howell 1961-9-22 36708 Butte Bank of Feather River. Oroville. Comment
  CHSC28667  Cyperus strigosus J. D. Jokerst 1979-10-12 373 Butte 50 met. S. of Big Chico Cr., 1.0 mi. N.E. of end of Upper Park Rd. 213 Comment
  CHSC68411  Cyperus strigosus L. P. Janeway 1986-9-20 1875 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Fery Road bridge. 28 Comment
  CHSC37118  Cypripedium fasciculatum L. Ahart 1982-9-13 3809 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  SEINET10470085  Cypripedium fasciculatum Mary Susan Taylor 1981-5-29 Taylor 3817 Butte T23N R7E nw/nw sec 29, Bucks Lake quad. Along Buckhorn Creek on S side, about midslope, ca. 200 ft W of 23N18.5, ca. 1 mi SW of Grizzly Mt, ca. 13 air mi NE of Pulga. Dense, shaded, moist Yellow Pine Forest; 5200 ft. 1585 Comment
  CAS-BOT-BC68042  Cystopteris fragilis Clarence R. Quick 1952-7-1 52 -123 Butte Sierra Nevada - Mill Creek Road between Feather River Canyon and Coyote Gap Comment
  SEINET10899407  Cystopteris fragilis Mary Susan Taylor 1981-3-24 Taylor 3445 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC190484  Dactylis glomerata Lowell Ahart 1987-7-8 5803 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, southeast of Pulga. 1280 Comment
  CHSC109588  Dactylis glomerata Lowell Ahart 2012-5-23 18107 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. 70 Comment
  CAS-BOT-BC189852  Danthonia californica Lowell Ahart 1983-6-21 4093 Butte Sierra Nevada. Along Bloomer Hill Road, ca. 1.25 mile west of the Oroville Quincy Highway, ca. 15 miles northeast of Oroville. 450 Comment
  UC1131384  Danthonia californica H. S. Yates 1936-8-13 17549 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  POM219142  Danthonia californica var. americana H. F. Copeland 1931-6-11 1558 Butte Butte Creek Meadows Comment
  CHSC38672  Darmera peltata Vernon Oswald 1983-5-23 546 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek near the east boundary of the park. 207 Comment
  CHSC31862  Daucus carota L. Ahart 1977-7-14 1467 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC56766  Delphinium gracilentum R. A. Schlising 1981-6-16 4088 Butte Cohasset, e of KPAY radio tower (1.1 mi e of junction Cohasset Road on Vilas Road) at West Branch of Mud Creek. 975 Comment
  UCD95659  Delphinium gracilentum A. A. Heller 1919-5-18 13176 Butte Mosquito creek between Appleton and Coutelence in the yellow pine belt in moist soil near the creek. Comment
  CAS-BOT-BC8565  Delphinium hansenii E. B. Copeland 1899-5-28 s.n. Butte Marysville Comment
  CHSC102847  Delphinium hansenii subsp. hansenii Lowell Ahart 2009-5-30 15805 Butte On the west side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 440 Comment
  CHSC50336  Delphinium hesperium subsp. hesperium Vernon Oswald 1990-6-1 4274 Butte Butte Creek Trail, ca. 1.75 miles north-northwest of Lake De Sabla. 579 Comment
  CHSC101301  Delphinium nudicaule Lowell Ahart 2009-4-22 15590 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC87436  Delphinium nudicaule R. D. Fischer 2004-3-28 100 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail below bluffs of Disk Golf Course. On bluff edge. 381 Comment
  CHSC51903  Delphinium patens subsp. patens Richard Steward 1988-4-2 2 Butte Ca 6 mi N, 0.4 mi NW of Paradise. 701 Comment
  JEPS104009  Delphinium patens subsp. patens Lowell Ahart 2003-4-15 10100 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC52501  Delphinium variegatum M. J. Luesebrink 1978-2-4 11 Butte Ca. 250 ft. n of Wildwood Ave., 0.8 mi ne of junction with Manzanita Ave., .8 mi sw of rifle range, Bidwell Park, Chico. 56 Comment
  CHSC76957  Delphinium variegatum Margie Collins 1894-5-1 Butte Chico. Comment
  POM150574  Delphinium variegatum E. B. Copeland 1903-5-2 3251 Butte Chico Comment
  CAS-BOT-BC17022  Delphinium variegatum subsp. variegatum A. A. Heller; H. E. Brown 1902-5-10 s.n. Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC82876  Dendromecon rigida Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  SEINET10907269  Dentaria pachystigma var. dissectifolia Mary Susan Taylor, L. Hanson 1981-4-10 Taylor 3524 Butte T22N R4E ne sec 2 to nw sec 1, Pulga SW quad. N-facing grassy serpentine slope, ca. 1/4 mi n of Pine Cluster Ranch, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. Elevation 2700 to 2900 ft. 731 Comment
  UCR143552  Deschampsia cespitosa subsp. cespitosa H. F. Copeland 1930-7-25 1344 Butte Jonesville 1524 Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  CAS-BOT-BC192659  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte Hills 8 miles north of Oroville Comment
  CHSC38806  Deschampsia danthonioides Vernon Oswald 1982-4-16 Butte Bidwell Park, Chico, ca. about 800 ft n of Upper Park Rd. on the e side of the intermittent stream which crosses Upper Park Rd. 2.9 mi e of its junction with Wildwood Ave. 134 Comment
  SEINET3927686  Deschampsia danthonioides B. Ertter, Jeff Strachan 1980-5-5 3255 Butte Peter Ahart Ranch ca 1.5 miles northeast of Honcut between Oroville and Marysville. North of house.; 0 30 Comment
  UC203666  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte along rd. between Dry Creek and Gridley (and near Nelson) Comment
  UCD62543  Deschampsia danthonioides R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 10 miles S of Oroville on Marysville Road. Comment
  CAS-BOT-BC201749  Deschampsia elongata Lowell Ahart 1987-7-17 5822 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC33467  Descurainia incana R. E. Preston 1981-7-14 109 Butte Ca. 7.5 km ese of Jonesville. In meadow. 1950 Comment
  CHSC31700  Desmazeria rigida L. Ahart 1979-4-28 1852 Butte Along a wash near the old tunnel gold mine. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC388455  Dianthus armeria Lowell Ahart 1988-6-29 6089 Butte Along Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone 621 Comment
  CHSC79753  Dicentra formosa Leanna Brown 1999-4-27 70 Butte Eastern shore of Paradise Lake. 753 Comment
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  POM148827  Dicentra formosa subsp. formosa Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  UCD114218  Dicentra formosa subsp. formosa R. J. Planck 1963-5-4 27 Butte Ragdump Road, 4 miles E of Stirling City log pond. Comment
  SEINET10508815  Dichanthelium lanuginosum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4138 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC82601  Dichelostemma capitatum subsp. capitatum Tara Morgan 2002-4-23 26 Butte Found along the south rim trail located on the east side of Big Chico Creek. Located down from the green gate off of Highway 32 down the trail to the left split. 395 Comment
  SEINET10833771  Dichelostemma congestum A. Arthur Heller 1902-5-8 Heller s.n. 1902 Butte Berry Canon (near Clear Creek) Comment
  CHSC31512  Dichelostemma multiflorum L. Ahart 1978-4-27 1666 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA21172  Dichelostemma multiflorum Carl B. Wolf 1937-5-14 8664 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  SEINET3243527  Dichelostemma multiflorum Carl B. Wolf 1937-1 8781 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte. 91 Comment
  HSC66210  Dichelostemma multiflorum Jane A. Rogers 1979-4-21 20 Butte S side of Neal Rd., 0.25 mi. W of intersection of Hwy. 99 and Neal Rd. 61 Comment
  UC143046  Dichelostemma multiflorum Mrs. R. M. Austin Apr 1896 37 Butte e of Chico Comment
  CAS-BOT-BC502525  Dichelostemma volubile H. C. Cantelow 1940-5-10 3911 Butte E of Oroville. Old road to Bucks Lake. Comment
  SEINET12044674  Dichelostemma volubile L. S. Rose 1933-1 33195 Butte Bangor 267 Comment
  CAS-BOT-BC209039  Digitaria sanguinalis Lowell Ahart 1983-10-15 3889 Butte North Honcut Creek, about 1 mi. N and 2.75 mi. E of Honcut - Sierra Nevada 50 Comment
  RSA29936  Digitaria sanguinalis I. L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  UCD64122  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  SEINET10508481  Digitaria sanguinalis Lowell Ahart 1985-11-7 Ahart 5236 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CHSC104800  Diospyros virginiana Lowell Ahart 2010-6-12 16803 Butte North side of the pond, at the table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  SEINET13693686  Diplacus aurantiacus M. J. Williams, W. Roderick 1984-5-25 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CHSC1761  Diplacus douglasii L. Oliver; D. Sloan 1935-3-17 Butte Salmon Hole on Chico Creek. 152 Comment
  CAS-BOT-BC151942  Diplacus douglasii Frances Brown 1935-3-20 s.n. Butte Durham Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 Comment
  CHSC44672  Diplacus kelloggii R. Banchero 1980-4-13 110 Butte Doe Mill Ridge, ca 2.0 mi SW of the Covered Bridge. 213 Comment
  CHSC4612  Diplacus kelloggii R. Carter 1966-4-11 329 Butte Found ca. 10 mi. E of Oroville, 1 mi. E of Bidwell Bar along R.R. tracks on S side of river. Comment
  SEINET13700565  Diplacus kelloggii M. J. Williams 1967-4-22 s.n. Butte Road from Oroville to Feather Falls. 244 Comment
  CHSC44731  Diplacus torreyi R. Banchero 1980-6-16 239 Butte Along Humbolt Rd 1.9 mi SW of the jct with the Skyway, Ca 3.1 mi NE of the jct of Humbolt Rd and Hwy 32. 1414 Comment
  CAS-BOT-BC154173  Diplacus tricolor A. A. Heller; H. E. Brown 1902-5-15 5554 Butte Near Biggs Comment
  RSA4135  Dodecatheon alpinum subsp. majus E. B. Copeland 1930-6-26 s.n. Butte Jonesville. 1550 Comment
  CHSC24851  Dodecatheon clevelandii subsp. patulum A. D. Launer 1976-3-14 2 Butte Small population 100 yds n of Humboldt Rd, ca. 4 mi e of Chico. 97 Comment
  CHSC3995  Dodecatheon clevelandii subsp. patulum Wayne O. Baum 1967-3-17 3 Butte In triangle area, on e. side of Cohasset Rd. and ca. 312 mi n. of Chico. 60 Comment
  CHSC14051  Dodecatheon hendersonii J. F. Goodwin 1972-3-21 247 Butte Ca. 4 mi se on Cherokee Rd, from Hwy 70, ca. 500 ft w of road near oaks in cow pasture. Comment
  UCD118965  Dodecatheon hendersonii M. Vincent 1964-4-9 542 Butte Honey Run Rd. 2 miles west of Skyway. Comment
  UCD149972  Dopatrium junceum William Anderson 1964-8-15 s.n. Butte Richvale. Comment
  POM57731  Downingia bicornuta E. B. Copeland 1903-5-30 3284 Butte Chico. Comment
  CHSC112888  Downingia bicornuta var. bicornuta Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.2 air mi E of Hwy 99 off NW edge of the Thermalito Afterbay, ca 450 ft NW of the levee road and just S of fenceline along rice fields. 41 Comment
  CHSC84254  Downingia cuspidata Lowell Ahart 2003-5-28 10227 Butte Center of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  UC890622  Downingia cuspidata Elmer I. Applegate 1928-4-27 5378 Butte between Richvale and Biggs Comment
  CHSC8625  Draba verna D. Patton 1968-3-5 72 Butte Collected ca. 1 1/2 mi e of Chico near edge of The Skyway. 91 Comment
  SEINET10448465  Draba verna Mary Susan Taylor 1973-1 Taylor 63 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC109119  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC31141  Draba verna var. aestivalis M. S. Taylor 1979-3-19 1929 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville. 487 Comment
  CHSC103662  Draba verna var. verna Lowell Ahart 2010-2-13 16565 Butte Parking area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  RSA31686  Draperia systyla A. A. Heller 1938-5-28 15128 Butte Feather River Highway near Pulga. 726 Comment
  JEPS110326  Drosera rotundifolia Lowell Ahart 2006-7-25 13065 Butte West part of a large meadow and bog, about 20 yard DUE TO CONCERNS FOR THE PROTECTION OF CERTAIN RARE OR COLLECTIBLE SPECIES, FOR THIS SPECIES THE LOCATION INFO HAS BEEN TRUNCATED, SECTION INFO HAS BEEN DELETED FROM THE TOWNSHIP AND RANGE FIELD, AND SEC 1569 Comment
  SEINET10448021  Drosera rotundifolia Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4202 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CAS-BOT-BC159640  Drymocallis glandulosa var. glandulosa M. S. Taylor 1982-5-2 4393 Butte Pulga serpentine, N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  CHSC23407  Dryopteris arguta M. S. Taylor; L. Gut 1976-3-6 1012 Butte Along Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC39351  Dryopteris arguta Lowell Ahart 1983-6-30 4171 Butte Along old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap, Section 11. 350 Comment
  CAS-BOT-BC70859  Dryopteris arguta Wayne D. Dakan 1974-4-15 s.n. Butte near Pulga Comment
  SEINET10530142  Dryopteris arguta Mary Susan Taylor 1980-3-8 Taylor 2376 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC42190  Dudleya cymosa A. L. Quesada 1986-4-19 2 Butte Small population 3.3 mls from jct of Stilson Cyn on Humboldt Rd n of Chico. 152 Comment
  CAS-BOT-BC428074  Dudleya cymosa subsp. cymosa Herbert Copeland 1920-5-1 s.n. Butte Jonesville Comment
  CHSC97739  Dysphania ambrosioides Lowell Ahart 2007-11-3 14565 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC40611  Dysphania pumilio Lowell Ahart 1985-10-12 5203 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reserovir, about 3 miles south of Paradise. 301 Comment
  CHSC97729  Dysphania pumilio Lowell Ahart 2007-11-3 14566 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC56899  Echinochloa colona J. D. Jokerst 1980-11-11 Butte Along irrigation ditch adjacent to Goodspeed-Watt Road, 0.1 mi north of junction with Nelson Road. Comment
  SEINET8413190  Echinochloa colona Richard R. Halse 2006-8-2 6985 Butte Chico; weedy area at edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 95 Comment
  UCD60918  Echinochloa crus-galli L. Ahart 1984-9-17 4791 -B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. 50 Comment
  UCD61105  Echinochloa muricata E. M. Johnston 1915-7-1 149 -J Butte Biggs. Comment
  CAS-BOT-BC208564  Echinochloa oryzicola Lowell Ahart 1984-9-17 4792 b Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  UCD61163  Echinochloa oryzicola B. Voorhees 1997-8-21 Butte Davit Dayton Ranch, south of Chico. Comment
  CHSC108133  Eclipta prostrata Lowell Ahart 2011-10-29 17718 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC36968  Eclipta prostrata M. S. Taylor; L. Ahart 1982-10-11 5147 Butte Graylodge Wildlife Refuge, near checking station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CHSC82227  Elatine rubella Lowell Ahart 2002-4-10 9478 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  HSC72958  Elatine rubella M. S. Taylor 1978-7-22 1850 Butte Richvale, on SE corner of Richvale E Rd. and Erickson Rd. 30 Comment
  CAS-BOT-BC113635  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. 1550 Comment
  CHSC78919  Eleocharis acicularis Lowell Ahart 2000-10-21 8711 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  JEPS98305  Eleocharis acicularis Lowell Ahart 2000-10-2 8699 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
  JEPS98372  Eleocharis acicularis Lowell Ahart 2000-7-11 8579 Butte 4 air mi NE of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  SEINET10905702  Eleocharis acicularis Lowell Ahart 1984-5-7 Ahart 4591 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
  CHSC42715  Eleocharis engelmannii Lowell Ahart 1987-6-9 5724 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET7585972 Image available Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC111159  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte on the sides of the small stream, on the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountainl, about 6 miles (air) north of Oroville. 273 Comment
  CHSC28829  Eleocharis macrostachya J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 421 Butte Top of North Table Mt, ca 1.0 mi n of east edge jct with Cherokee Rd. 381 Comment
  CHSC68431  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1917 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  JEPS103568  Eleocharis montevidensis Lowell Ahart 2002-6-7 9710 Butte On the S side of North Honcut Creek, Peter Ahart Ranch, ca 1 mile N and 2 3/4 miles E of Honcut, ca 12 miles (air) SE of Oroville. 38 Comment
  JEPS98699  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin 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
  CDA2608  Eleocharis pachycarpa L. Ahart 2000-5-24 8389 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET9084814  Eleocharis pachycarpa L. Ahart 2000-7-18 8597 Butte Oroville Wildlife Area, ca 0.5 mile W of Pacific Heights Road, ca 4 air miles SW of Oroville. 40 Comment
  CHSC55295  Eleocharis quadrangulata Lowell Ahart 1991-9-14 6722 Butte Drying margins of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  JEPS88549  Eleocharis quadrangulata Vernon H. Oswald and Lowell Ahart 1996-7-22 8092 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on s side of Tract 3.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  RSA716569  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  JEPS98265  Eleocharis radicans Lowell Ahart 2000-10-2 8698 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
  CDA38982  Eleocharis radicans L. Ahart 2000-9-2 8680 -A Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  CDA38983  Eleocharis radicans L. Ahart 2000-9-2 8680 -A Butte About 4 miles (air) southwest of Oroville; about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area. Comment
  CHSC37397  Elodea canadensis R. A. Schlising 1980-8-31 3979 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 49, along latter and across from Thermalito Afterbay. Comment
  SEINET10564686  Elymus elymoides A. Arthur Heller 1917-7-29 Heller 12867 Butte Summit above Jonesville in granite, in open forest of Abies magnifica. Undershrubs are Uva ursi, Cerasus, Ceanothus cordulatus and velutinus. 2134 Comment
  CHSC49574  Elymus elymoides subsp. californicus Vernon H. Oswald 1983-6-22 731 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  UC398890  Elymus elymoides subsp. elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  UC821488  Elymus elymoides subsp. elymoides A. A. Heller 1917-7-29 12867 Butte summit above Jonesville 2133 Comment
  SACT001137  Elymus glaucus Herbert Copeland 1930-7-21 Butte In damp woods and meadows. 1500.0 Comment
  UCR143543  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  UCSB63839  Elymus glaucus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; Little Kimshew Creek, in Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  CAS-BOT-BC203426  Elymus glaucus subsp. glaucus A. A. Heller 1914-7-23 11614 Butte Chico Meadows 1219 Comment
  CHSC111403  Elymus glaucus subsp. glaucus Lowell Ahart; Lowell Ahart 2012-6-28 18239 A Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  JEPS94308  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  CHSC65611  Elymus glaucus subsp. jepsonii L. P. Janeway 1995-7-27 4878 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca 0.6 mi east of the western end of the ridge. 1143 Comment
  CDA13730  Elymus stebbinsii G. F. Hrusa, T. D. Wilfred 1997-6-27 13908 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Slopes densely forested with rare granite rock outcrops & gravelly open areas. Uncommon, here in sandy-gravelly, rock outcrop/opening. Perennial, clumping, few-stemmed. Comment
  CHSC36554  Elymus triticoides L. Ahart 1982-7-10 3668 Butte Ca. 1/12 mi e of checking station, Graylodge Wildlife Refuge Station, on n side of road. 35 Comment
  CHSC44912  Elytrigia intermedia subsp. intermedia Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CHSC45419  Enemion occidentale Lowell Ahart 1971-3-26 67 Butte Along Swedes Flat Road, about 1 mile east of Oroville Bangor Highway. 243 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
  CDA38260  Epilobium brachycarpum G. F. Hrusa, S. Dubiel 2012-9-9 18507 Butte Sierra Nevada; Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  CHSC24805  Epilobium brachycarpum E. L. Rilla 1976-9-18 29 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
  SEINET6635812 Image available Epilobium brachycarpum H. F. Copeland 1923-1 404 Butte Nelson Comment
  POM219493  Epilobium brachycarpum H. F. Copeland 404 Butte Nelson. Comment
  UC204404  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durham and Nelson; Butte Creek 53 Comment
  CHSC94658  Epilobium canum subsp. latifolium Lowell Ahart 2006-9-28 13386 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  RSA88521  Epilobium canum subsp. latifolium J. T. Howell 1951-8-19 28162 Butte Sierra Nevada: Above Arch Rock Tunnel, on Feather River. 457 Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  JEPS88582  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald and Lowell Ahart 1996-7-22 8078 Butte US Fish & Wildlife Service parcel betw 7 Mile Lane and Sacramento R. (edge of farm rd. crossing branch of Angel Slough w of Refuge HQ's at s.e. corner of Tract 1, Sanctuary 1); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  RSA0117083  Epilobium densiflorum Lowell A. Ahart 2015-6-6 20203 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  SEINET10453013  Epilobium glaberrimum Mary Susan Taylor 1977-8-17 Taylor 1468 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC46576  Epilobium glaberrimum subsp. glaberrimum Vernon H. Oswald 1989-7-18 3862 Butte Humboldt Rd east of Butte Meadows, ca. 0.5 mi sw of the Butte Creek Bridge at Cherry Hill. Meadow bordering Butte Creek. 1389 Comment
  POM184022  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-17 s.n. Butte Jonesville; in woods along Butte Creek 457 Comment
  SBBG32323  Epilobium minutum L. S. Rose 1963-6-2 Butte 2 mi S of Pulga, N Fork of Feather River 579 Comment
  SEINET10453179  Epilobium minutum Mary Susan Taylor 1978-5-6 Taylor 1572 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  RSA516785  Epilobium paniculatum L. Ahart 1976-10-2 s.n. Butte Peter Ahart Ranch, Honcut. 46 Comment
  CHSC113442  Epilobium torreyi Lowell Ahart 2014-7-10 19621 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  UC600560  Epilobium torreyi H. F. Copeland July, 1930 Butte Jonesville Comment
  RSA754451  Epipactis gigantea Lowell A. Ahart 2009-6-3 15833 Butte On E side of Big Chico Creek, SW of the meadow, about 30 yards W of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 209 Comment
  CAS-BOT-BC57993  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the N. Fork of the Feather River, near the Poe Power House, about 2 mi. se. of Jarbo Gap. 271 Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  SEINET9765342 Image available Equisetum hyemale Richard Carter 2006-7-31 Butte ca. 4 airmiles S Oroville jct. Hwy CA 70 and Hwy CA 162, Oroville Wildlife Area Comment
  SEINET10530172  Equisetum hyemale subsp. affine Mary Susan Taylor 1975-10-4 Taylor 965 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC30729  Equisetum laevigatum M. S. Taylor; R. Schlising 1980-7-6 3081 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  SEINET10530239  Equisetum laevigatum Mary Susan Taylor 1975-8-31 Taylor 891 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC75982  Eragrostis cilianensis Lowell Ahart; Vernon H. Oswald 1999-8-13 8150 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
  SEINET10836138  Eragrostis cilianensis Lowell Ahart 1984-10-5 Ahart 4813 Butte On dry red gravelly soil in the open pasture fields; the area has a high water table; Peter Ahart Ranch, ca. 1.5 mi N and 1.7 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland. 50 Comment
  UCD62990  Eragrostis curvula J. W. Jones 1930-6-20 Butte Biggs. Comment
  CHSC76429  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 Butte On the west side of a pond, area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC284086  Eragrostis pectinacea var. pectinacea John Thomas Howell 1961-9-22 36786 Butte North Fork of Feather River ne. of Pulga, Sierra Nevada Comment
  CHSC44922  Eragrostis pectinacea var. pectinacea Lowell Ahart 1988-7-24 6135 Butte Along the north edge of La Porte Road, about 2 1/2 miles north-east of Bangor. 274 Comment
  UCD65674  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC90973  Eremogone cliftonii L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-5-4 8376 Butte Northern High Sierra Nevada. Plumas National Forest; along Pulga Road on southwest side of Dogwood Creek; canyon of North Fork Feather River. 594 Comment
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Jul 8 2014
  CHSC92525  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown, Lawrence Janeway, Jamie Lewis 2005-5-4 1216 Butte North of Pulga/Mayaro area. 1018 Comment
  CHSC41870  Ericameria arborescens Lowell Ahart 1986-10-16 5406 Butte Along Ponderosa Way, about 1/2 mile south of Lumpkin Road, about 3 miles south-west of Feather Falls. 609 Comment
  RSA4145  Ericameria bloomeri E. B. Copeland 1930-8-26 493 Butte Jonesville 1550 Comment
  CDA14082  Erigeron annuus G. F. Hrusa, T. D. Wilfred 1997-7-3 13966 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC41876  Erigeron bonariensis Lowell Ahart 1986-11-14 5461 Butte 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
  CHSC110116  Erigeron canadensis L. P. Janeway 2012-10-18 11082 Butte Sacramento Valley. Along Hwy 70 at Wheelock Road/Coal Canyon Road. 136 Comment
  CAS-BOT-BC295164  Erigeron inornatus Lowell Ahart 1983-7-29 4245 Butte About 1 mile east of Milsap Bar, about 25 miles north-east of Oroville 750 Comment
  SEINET10971237  Erigeron inornatus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4245 Butte T22N R6E ne sec 36. Ca. 1 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  SEINET10839186  Erigeron inornatus var. viscidulus Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4206 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC72439  Erigeron petrophilus var. sierrensis L. P. Janeway 1998-7-31 5906 Butte Along dirt road 100 ft above north end of the Lost Creek Reservoir dam. 981 Comment
  POM33315  Erigeron philadelphicus C. C. Bruce 1897-04 2075 Butte Near Deadwood Comment
  CHSC27256  Eriobotrya japonica P. Moyer 1971-2-1 79 Butte CSUC Campus. S bank Chico Ck., at base of sycamore tree, w of L.S.-Ed. Psych. Bridge. 60 Comment
  RSA31114  Eriodictyon californicum A. A. Heller 1915-4-20 11856 Butte 7 miles below Centerville. Butte Creek. 76 Comment
  CHSC45099  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte On a large road cut along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  RSA0005065  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 610 Comment
  NY282106  Eriogonum microthecum var. laxiflorum R. R. Halse 1988-8-13 3756 Butte Along U.S. Hwy 20/26, 3.3 miles northeast of the entrance to Craters of the Moon National Monument, at milepost 233. 1680 Comment
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Feb 29 2016
  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
  SEINET10904446  Eriogonum umbellatum var. speciosum Mary Susan Taylor 1981-7-10 Taylor 4063 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70 at Pulga bridge, on large serpentine outcrop, ca. 20 mi NE of Oroville. 1600 ft elev. 488 Comment
  CHSC88276  Eriogonum vimineum Lowell Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  SEINET10479585  Eriogonum vimineum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4181 Butte T22N R4E nw/nw sec 1. Ca. 1.5 mi ne of Concow Reservoir. Foothill Woodland; 550 m. NE of Oroville. 550 Comment
  CHSC94347  Eriophorum gracile Lowell Ahart 2006-7-16 12981 Butte In a bog, in the west edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC95179  Eriophorum gracile R. D. Fischer 2005-6-5 22 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing in wet portion of Chico Meadow above pond. 1280 Comment
  LA203593  Eriophyllum lanatum E. B. Copeland; 1930-7-11 492 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CHSC109576  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2012-6-7 10856 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines 895 Comment
  CHSC328  Eriophyllum lanatum var. grandiflorum 1954-5-30 Butte Paradise. 548 Comment
  CHSC40478  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 4997 Butte West of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  POM53933  Eriophyllum lanatum var. grandiflorum A. A. Heller, H. E. Brown 1902-5-7 5483 Butte Berry Canyon (Near Clear Creek). Comment
  UC201314  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  UC1130255  Erodium botrys C. G. Albertus 1933-6-6 22 Butte 0.25 mi w Pentz; Chico Quad. 137 Comment
  CHSC85819  Erodium brachycarpum Richard R. Halse 2002-3-27 6154 Butte At the junction of State Hwy. 99 and Hamilton Nord Cana Hwy. ca. 8 miles NW of Chico. 40 Comment
  JEPS119602  Erodium brachycarpum Lowell Ahart 2012-4-9 17844 Butte About 5 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  JEPS115287  Erodium cicutarium Lowell Ahart 2009-4-3 15528 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  HSC8490  Erodium cicutarium William J. Ferlatte 1963-5-11 41 Butte Chico State College campus Comment
  CAS-BOT-BC41445  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  RSA481930  Eryngium castrense Aaron Liston, Sara Meury 1988-5-28 743 -5 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  CAS-BOT-BC211103  Eryngium pinnatisectum Lowell Ahart 1972-5-8 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC21019  Erysimum capitatum var. capitatum M. S. Taylor 1975-4-29 544 Butte On s side of Hwy 70, ca. 25 mi ne of Oroville. Comment
  CHSC42717  Erythranthe cardinalis Lowell Ahart 1987-6-9 5723 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4611  Erythranthe cardinalis R. Carter 1996-6-26 460 Butte Found ca. 15 mi. NE of Oroville at old Berry Creek RR station on N Fork Feather R., 500 yds. up E side Berry Cr. 457 Comment
  CHSC48997  Erythranthe floribunda Vernon Oswald 1984-6-3 1251 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. 39 Comment
  CHSC27050  Erythranthe geniculata Lowell Ahart 1978-5-2 Butte On Table Mountain, n of Oroville. 400 Comment
  CHSC43538  Erythranthe geniculata Lowell Ahart 1978-5-2 1708 Butte North of the large parking area on the top of Table Mountain, about 7 miles north of Oroville. 396 Comment
  CHSC105166  Erythranthe glaucescens Christopher T. Ivey 2007-3-31 370 Butte Big Chico Creek Ecological Reserve. 360 Comment
  CHSC44800  Erythranthe glaucescens R. Banchero 1980-6-12 211 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  CHSC54452  Erythranthe guttata Vernon H. Oswald; Lowell Ahart 1991-7-15 4741 Butte Milsap Bar Rd (Forest Rd 22N62), 6.4 miles west of Feather Falls-Little Grass Valley Rd (Forest Rd 22N94), ca 5.5 miles (air) east-northeast of Brush Creek. 845 Comment
  CAS-BOT-BC151463  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  SEINET8354987  Erythranthe moniliformis A. A. Heller 1914-6-22 11511 Butte Chico meadows. 1219 Comment
  CHSC43762  Erythranthe pulsiferae Vernon oswald; Lowell Ahart 1987-6-10 2979 Butte Forest Service road joining Humbug Rd. in about the center of Section 22, in the first drainage e of Humbug Rd. 1874 Comment
  SEINET10938447  Erythronium cliftonii Mary Susan Taylor 1979-3-19 Taylor 1925 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC32642  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-3-31 3460 Butte S side of Ponderosa Way (Rim Rd, rd to Flea Valley), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville. 975 Comment
  CHSC32653  Erythronium multiscapideum M. S. Taylor; D. Hemphill 1981-3-18 3416 Butte S side of Hwy 70 just e of Pulga Bridge by turnout. 487 Comment
  CHSC4195  Erythronium multiscapideum E. P. Parreno 1967-4-10 Butte Ca. 300 yards from Covered Bridge, NE Chico. Comment
  CHSC88619  Erythronium multiscapideum Linnea Hanson; Glenn Clifton 1997-3-19 370 Butte Plumas National Forest. 3 miles from Jarbo Gap, Rocky Ridge Road. Comment
  UC1485466  Erythronium multiscapideum M. S. Taylor 1981-4-8 3516 Butte open reddish serpentine slope ca 1/10 mi s jct of Concow Road and Ponderosa Way (ca 7 mi n of Jarbo Gap on Hwy 70, ca 22 air mi n of Oroville); Pulga SW Quad 975 Comment
  CAS-BOT-BC504537  Erythronium multiscapideum John Thomas Howell 1955-6-14 30438 Butte Magalia 731 Comment
  CHSC99652  Eschscholzia californica H. Koeth 2007-4-26 Butte 20th and Salem St., Chico. Growing in an unmanaged lawn. UTM 10 600693E 4396754N 57 Comment
  CHSC1203  Eschscholzia californica subsp. californica M. Anthony 1962-4-20 Butte Bidwell Park. 60 Comment
  CHSC1192  Eschscholzia lobbii W. Reed 1942-3-26 Butte Comment
  CHSC1193  Eschscholzia lobbii S. Cater 1929-3-24 Butte Richardson Springs road. 121 Comment
  CHSC46497  Eschscholzia lobbii Lowell Ahart 1975-5-12 776 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
  RSA715717  Eschscholzia lobbii L. P. Janeway 2005-3-1 8331 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC98570  Eucalyptus camaldulensis L. P. Janeway 2008-1-9 9228 Butte Northern Sierra Nevada Foothills. Southwest corner of Kelly Ridge, Oroville; 740 m south-southwest of the southern end of Oroville Dam, at junction of Oro-Dam Blvd and Canyon Drive. Ridge top row of these old trees. 235 Comment
  SEINET10453754  Euphorbia crenulata Mary Susan Taylor 1982-6-24 Taylor 4736 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
  CHSC48380  Euphorbia peplus Vernon Oswald 1987-3-26 2297 Butte Butte Creek Reserve on the e side of the Skyway and n side of Butte Creek. Between some ponds in dredger tailings. 73 Comment
  SEINET10453782  Euphorbia serpillifolia Lowell Ahart 1990-10-21 Ahart 6637 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. Foothill Woodland (destroyed). T21N R4E NWS5. 213 Comment
  CAS-BOT-BC312199  Eurybia radulina Lowell Ahart 1985-8-15 5166 Butte About 2 miles south-west of Forbestown about 2 miles north-east of Robinson Mill Road 762 Comment
  CAS-BOT-BC458287  Euthamia occidentalis John Thomas Howell 1961-9-22 36728 Butte Sierra Nevada: Bank of Feather River, Oroville 53 Comment
  CHSC42497  Fallopia convolvulus Lowell Ahart 1987-6-9 5722 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
  CHSC5935  Fatsia japonica M. Macarthur 1968-6-12 164 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC98657  Festuca californica B. Castro; L. P. Janeway 2005-8-9 1525 Butte Ca 20 air mi NNE of Oroville and 2 mi S of Flea Mtn, along Rim Rd ca 1 mi SE of its jcn with Concow Rd. On uphill edge of road, on NE-facing slope. 987 Comment
  POM365944  Festuca californica var. californica L. Ahart, P. Ahart 1984-6-10 4701 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown. 700 Comment
  UCR237317  Festuca dertonensis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18733 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  SEINET10560618  Festuca elmeri Elihu Hall 1863-1 Hall s.n. Butte Bolander. Comment
  UCR177719  Festuca microstachys var. ciliata Lowell Ahart 2006-5-10 12619 Butte 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 2.5 miles (air) southwest of Pulga 355 Comment
  CHSC109625  Festuca myuros Lowell Ahart 2012-6-17 18081 Butte On the north side of Big Chico Creek, southeast of Table 21, south of the paved park road, northeast of the Deer Pen, Lower Bidwell Park, Chico. 73 Comment
  CHSC111379  Festuca myuros Lowell Ahart 2012-5-2 17977 Butte On the south side of the paved road, about 100 yards southeast of the entrance of Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC76331  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 770 Comment
  UCD66372  Festuca rubra August L. Hormay 1929-6-27 Butte Chico Meadows. Comment
  SEINET10507967  Festuca subulata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4107 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC85408  Fimbristylis autumnalis John Dittes 2003-10-8 845 Butte Arroyo Chico Land Grant. Northern Sacramento Valley; ca. 6.0 air-miles west by southwest of Chico, ca. 2.3 air-miles south of State Hwy 32, east bank of Sacramento River, Bidwell-Sacramento River State Park. 38 Comment
  CHSC12117  Fragaria vesca M. F. Smith 1972-4-22 6 Butte On Madrone Meadows Road two (2) miles from turn off at Lumpkin Road 1/2 mile west of Feather Falls Community. 914 Comment
  CAS-BOT-BC437078  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC62902  Frangula californica subsp. tomentella John Thomas Howell 1955-6-14 30446 Butte Magalia. 731 Comment
  CAS-BOT-BC62945  Frangula californica subsp. tomentella Lowell Ahart 1987-5-9 5586 Butte Along Pulga Road, about 1/4 mi. w. of Bardees Bar along the North Fork of the Feather River, about 2.5 mi. sw. of Pulga. 365 Comment
  SJSU7511  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 68113 Butte Feather R Canyon, Pulga 487 Comment
  CAS-BOT-BC55655  Frangula purshiana Clarence R. Quick 1952-6-29 52 -92 Butte Near spring, 0.3 miles west of Coyote Gap on Mile Creek Road Comment
  CHSC109215  Frangula rubra B. Castro; L. P. Janeway 2004-6-13 1467 A Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Road. 829 Comment
  CHSC11990  Frangula rubra E. B. Copeland 1931-7-28 657 Butte Jonesville. In brushy woods on dry ridge west of North Willow Creek. 1650 Comment
  CAS-BOT-BC55728  Frangula rubra subsp. rubra E. B. Copeland 1931-7-28 657 Butte west of North Willow Creek 1650 Comment
  CHSC6632  Fraxinus M. MacArthur 1968-6-16 355 Butte Ca. 10 ft. from NW edge of Big Chico Creek just N of bridge by Dining Hall, Chico State College campus. 60 Comment
  CAS-BOT-BC223384  Fraxinus dipetala Barbara T. Menzies 1978-4-17 s.n. Butte Nimshaw Road w. of De Sabla Comment
  JEPS119531  Fraxinus dipetala Lowell Ahart 2012-4-20 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC115408  Fraxinus latifolia M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  CHSC27636  Fremontodendron californicum Robert A. Schlising 1978-5-9 3229 Butte In chaparral south of Cohasset, along dirt road parallel with Cohasset Hwy, about 6 mi NE of Hwy crossing of Mud Creek. Comment
  CHSC41917  Fremontodendron californicum Lowell Ahart 1983-6-21 4084 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 450 Comment
  CHSC4661  Fritillaria affinis R. Carter 1966-3-13 301 Butte Found ca. 6 mi. E of Chico at intersection of HoneyRun Rd. and Humbug Rd. in Butte Cr. Canyon. Comment
  CHSC79871  Fritillaria affinis Simona Altman 1999-2-27 18 Butte Bidwell Park, S. side of Big Chico Cr. 121 Comment
  CAS-BOT-BC136068  Fritillaria affinis A. A. Heller 1916-2-27 12277 Butte Canyon of Chico Creek east of Chico Comment
  CAS-BOT-BC130314  Fritillaria eastwoodiae L. C. Hanson 1987-4-15 s.n. Butte Forbestown Site, on road from Forbestown to Woodleaf Comment
  CHSC115500  Fritillaria eastwoodiae L. P. Janeway 2015-3-18 11641 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way at Road 19N19, 1.0 road-km northwest of Lower Forbestown Road, just before the canyon becomes steep into South Fork Feather River arm of Lake Oroville. 747 Comment
  CHSC2279  Fritillaria eastwoodiae R. Carter 1964-3-23 68 Butte 1/4 mi. down Truex Rd. off Hwy. 40 A on S side of road. 152 Comment
  CHSC39597  Fritillaria eastwoodiae Lowell Ahart 1983-4-14 3933 Butte On the east side of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Reservoir., about 4 miles north-east of Forbestown. 450 Comment
  SEINET10905373  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3475 Butte T23N R4E northcentral sec 30; Paradise quad. Ca. 1/5 mi se of Ponderosa Way Bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (and downhill) of Magalia. Steep serpentine slope; 1800 ft. 549 Comment
  CHSC2282  Fritillaria pluriflora N. Maxwell 1929-3-4 Butte Near Shasta Union School. 60 Comment
  CHSC99098  Fumaria officinalis Elena Alfieri 2008-2-22 Butte Sacramento Valley. Lower Bidwell Park, Chico, within the Arroyo Chico Land Grant. Located on a shaded, southeast-facing slope overlooking the Big Chico Creek picnic area, and adjacent to Wildwood road (just before it dead ends); north side of Lindo Channel near its beginning at Big Chico Creek. 85 Comment
  CHSC31421  Galium bolanderi L. Ahart 1980-9-10 2630 Butte Ca. 1 mi NE of Millsap Bar, ca. 25 mi NE of Oroville. 900 Comment
  JEPS26676  Galium bolanderi P. C. Hutchison 1969-6-9 2099 Butte on hwy US Alt. 40 1 mi s (above) Pulga Bridge; canyon of the north fork of the Feather River Comment
  SEINET10836827  Galium grayanum Mary Susan Taylor 1980-8-2 Taylor 3202 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  JEPS107282  Galium murale Lowell Ahart 2005-4-14 11705 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley 28 Comment
  SEINET10902549  Galium murale Mary Susan Taylor 1978-4-14 Taylor 1551 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
  SEINET12318326  Galium nuttallii Unknown 1977-1 79 Butte ca 9 km N of Oroville 180 Comment
  POM68694  Galium nuttallii var. tenue C. C. Bruce 1897-05 1934 Butte Little Chico. Comment
  CHSC36511  Galium parisiense L. Ahart 1982-5-29 3446 Butte Peter Ahart Ranch, ca. 1.5 mi N and 2 1/4 mi E of Honcut. 50 Comment
  CHSC78269  Galium parisiense Lowell Ahart 2000-6-27 8524 Butte Seepy area, north part of Big Bald Rock, area is about 100 yards south and west of the north and east forest line, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 963 Comment
  JEPS119905  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte On the south side of the Humboldt Trail, about 100 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  UC1143092  Galium porrigens C. G. Albertus 1933-6-6 23 Butte 1/4 mi w Pentz; Chico Quadrangle 137 Comment
  CHSC1615  Galium porrigens var. tenue M. Roberson 1956-4-9 Butte SW of Paradise. 426 Comment
  JEPS98579  Galium tricornutum Lowell Ahart 2000-5-13 8353 Butte 5 mi SW of Oroville (Thermalito Afterbay, S side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  POM193329  Galium trifidum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  CHSC11819  Galium trifidum var. pacificum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  SEINET10500748  Galium trifidum var. pacificum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4750 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  CAS-BOT-BC169934  Garrya fremontii John Thomas Howell 1975-6-15 51081 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC3588  Garrya fremontii Susan Carrauthers 1966-3-5 29 Butte E. of city of Chico along highway 32 toward Susanville ca. 12 mi. Comment
  CAS-BOT-BC282603  Gastridium phleoides A. A. Heller 1902-5-15 5555 Butte Near Biggs Comment
  CHSC108171  Gastridium phleoides L. P. Janeway 2011-8-18 10666 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  CAS-BOT-BC278703  Gastridium ventricosum Lowell Ahart 1983-6-21 4063 Butte Along Bloomer Hill Road, ca. 1/8 mi. W of the Oroville Quincy Highway, 1.25 mi. S of the Berry Creek School, NE of Oroville 400 Comment
  JEPS110117  Gastridium ventricosum Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS116001  Gastridium ventricosum Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  CAS-BOT-BC56293  Gaultheria ovatifolia Clarence R. Quick 1965-7-27 65 -23 Butte along Lewis Creek near Lewis Flat, NE of Challenge 1066 Comment
  JEPS118048  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CDA38135  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. Comment
  CHSC37443  Gayophytum diffusum subsp. parviflorum R. A. Schlising; R. Banchero, R. Preston 1981-7-14 4144 Butte About 0.3 mi s of Humbug Summit in ne part of county. 1981 Comment
  CHSC36709  Gayophytum heterozygum M. Banchero 1979-9-2 24 Butte 6 mi NE Forest Ranch on Hwy 32, on roadside fill. Comment
  SD7787  Gayophytum heterozygum Daniel Cleveland 1882-8-4 Butte West Branch. Comment
  SEINET10453073  Gayophytum heterozygum Mary Susan Taylor 1977-8-17 Taylor 1480 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC3487  Genista monspessulana Roger Jaegel 1966-4-20 112 Butte Located on Chico - Paradise road, four miles east of Chico. Comment
  CHSC88166  Gentianopsis simplex Lowell Ahart 2004-8-2 11332 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
  CHSC98965  Geranium Lowell Ahart 2008-5-12 14762 Butte On the east side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown. 670 Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  CHSC36292  Geranium dissectum M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4353 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, ca. 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  CHSC7103  Geranium molle K. Cox 1969-4-4 15 Butte Bidwell Park. 4.2 mi E. of entrance to upper park. 60 Comment
  CHSC90471  Geranium molle Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11650 Butte Big Chico Creek Ecological Reserve. Burned area, south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  JEPS119546  Geranium molle Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17858 Butte East of the Deer Pen, between Tables 10 & 11, Lower Bidwell Park, Chico. 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
  CDA13726  Gilia capitata subsp. mediomontana G. F. Hrusa, T. D. Wilfred 1997-6-27 13904 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC36812  Gilia capitata subsp. mediomontana L. Ahart 1982-6-4 3555 Butte On a lava cap, 1.5 mi e of Camp 18 and ca. 8 mi e of Feather Falls. 1000 Comment
  UCD117708  Gilia capitata subsp. mediomontana L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET12318342  Gilia tricolor K. D. Johnson 1978-1 18 Butte NW side of Neal Rd, 3.1 mi SW of intersection with Skyway, Paradise 305 Comment
  CAS-BOT-BC266582  Githopsis pulchella A. A. Heller; H. E. Brown 1902-5-14 5548 Butte Berry Canyon [Near Clear Creek] Comment
  SEINET10460582  Githopsis pulchella subsp. campestris A. Arthur Heller 1914-5-22 Heller 11423 Butte On gravely north slope near Richardson Springs Comment
  UCD80202  Githopsis pulchella subsp. serpentinicola CNPS SN Foothill Team 2006-5-23 SNNR 0789 b Butte BLM Parcels near Paradise. 520 Comment
  CHSC113223  Githopsis specularioides Lowell Ahart 2014-5-2 19434 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  JEPS103370  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  CHSC61221  Glyceria declinata Lowell Ahart 1993-4-5 6927 Butte Floor of a rice field on the south side of Cottonwood Road, about 1/2 mile east of Highway 99. 36 Comment
  RSA21630  Gnaphalium luteoalbum C. B. Wolf 1937-6-12 8784 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  CHSC113129  Gnaphalium palustre Lowell Ahart 2013-11-17 19258 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  UC1609234  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte on s side of dirt road about 1/4 mi w Lost Creek Reservoir 1036 Comment
  CHSC108148  Goodyera oblongifolia Lowell Ahart 2011-8-23 17654 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 100 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC49678  Goodyera oblongifolia Vernon Oswald 1983-8-4 949 Butte Near Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1188 Comment
  JEPS118067  Goodyera oblongifolia Lowell Ahart 2011-8-23 17654 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 100 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  UC600633  Goodyera oblongifolia unknown 1924-8-10 857 Butte Jonesville Comment
  POM168292  Goodyera oblongifolia Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  SEINET6167160  Goodyera oblongifolia P. B. Kennedy 1901-8-15 407 Butte Bearmans camp, north fork of American River Comment
  CHSC43151  Gratiola ebracteata R. A. Schlising 1980-4-2 3532 Butte 1/4 miles S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Richvale vernal pools. Comment
  CHSC55415  Gratiola ebracteata L. P. Janeway 1991-5-2 3925 Butte 1 mi east of Palermo-Honcut Hwy, ca 2 1/2 mi north of Honcut. 38 Comment
  CAS-BOT-BC305284  Grindelia hirsutula A. A. Heller 1913-6-4 10780 Butte Table Mountain Olive Ranch north of Oroville Comment
  CHSC14007  Grindelia hirsutula var. davyi D. Isle 1969-5-17 478 Butte On e side of turn-off from Upper Bidwell Park to Bare Hole, in Upper Bidwell Park, Chico. 182 Comment
  CHSC33139  Grindelia hirsutula var. davyi J. D. Jokerst 1980-5-28 803 Butte Top of North Table Mountain. Along sides of Cherokee Road on the west 1/2 of the mountain. Comment
  CHSC84406  Grindelia hirsutula var. davyi Lowell Ahart 2003-7-30 10462 Butte At the trail head to Bald Rock Dome, about 1/8 mile east of Bean Creek Road, about 1 1/4 miles (air) southeast of Little Bald Rock, about 4 miles (air) southeast of Brush Creek. 801 Comment
  CHSC97029  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-19 9061 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  UC78798  Hackelia californica R. M. S. July, 1896 625 Butte Colby Comment
  CHSC27983  Hackelia nervosa M. S. Taylor 1978-7-18 1711 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  UC1560379  Hackelia nervosa E. Joyal and D. Mehlman 1988-7-3 1309 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  POM180853  Helenium bigelovii H. F. Copeland 1924-8-12 868 Butte Jonesville. Comment
  RSA722688  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC315000  Hemizonella minima Lowell Ahart 1989-5-29 6325 Butte East of Mooreville Ridge about 2 air miles north of the Lost Creek Dam south of the west branch of Pinkard Creek 1188 Comment
  CHSC45682  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1987-8-13 3219 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. By large vernal pool in field. 48 Comment
  UC726326  Hemizonia congesta subsp. luzulifolia A. A. Heller 1941-9-13 16310 Butte 9 mi from Chico (Oroville Road) 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
  JEPS115590  Hesperevax acaulis var. robustior Lowell Ahart 2009-4-22 15587 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CAS-BOT-BC310156  Hesperevax caulescens Peter H. Raven 1963-5-8 18363 Butte On State Highway 32, 5 miles west of Chico Comment
  CAS-BOT-BC175976  Hesperolinon californicum Mrs. C. C. Bruce 1897-3-1 1775 Butte Little Chico Comment
  CDA18369  Heteranthera limosa G. D. Barbe 1978-8-14 2438 Butte Biggs Rice Experiment Station. 0 Comment
  JEPS94303  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, near some small streamlets of Little Kimshew Creek, in Snow Meadow); Snow Meadow 1524 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
  SEINET10460749  Heterocodon rariflorum Mary Susan Taylor 1980-5-15 Taylor 2623 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET10840496  Heterocodon rariflorum Mary Susan Taylor 1980-5-31 Taylor 2770 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
  SEINET10972527  Heterocodon rariflorum Edwin B. Copel 1929-7-16 Copeland 398 Butte JONESVILLE 1150 M Comment
  JEPS115711  Heteromeles arbutifolia Lowell Ahart 2009-6-3 15836 Butte 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 Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET10483352  Heteromeles arbutifolia Mary Susan Taylor 1975-10-29 Taylor 967 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  CHSC8127  Heterotheca grandiflora K. Henegar 1969-4-17 88 Butte At corner of Pentz and Pentz-Paradise Road. Comment
  CAS-BOT-BC311008  Heterotheca oregona Lowell Ahart 1987-9-24 5903 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  JEPS103460  Heterotheca oregona var. rudis Lowell Ahart 2002-9-27 9940 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CAS-BOT-BC420457  Heuchera micrantha var. erubescens Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  RSA0062974  Heuchera micrantha var. erubescens C. C. Bruce 1897-05 2041 Butte Iron Canyon. Comment
  RSA0062978  Heuchera micrantha var. erubescens James R. Shevock 1972-5-19 1785 Butte N Fork Feather River Canyon. Hwy 70. 625 Comment
  CHSC6026  Hibiscus militaris M. MacArthur 1968-6-12 161 Butte Just outside NW entrance to Life Science bld., Chico State College. 60 Comment
  CHSC86850  Hieracium scouleri var. scouleri L. P. Janeway; John Hunt 2003-7-11 7895 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 835 m north-northeast of mouth of French Creek. Along edge and cutbank of roadbed. 305 Comment
  CHSC94562  Hirschfeldia incana Lowell Ahart 2006-9-13 13330 Butte South of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, poor road on the north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 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
  CAS-BOT-BC280713  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC111726  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Uncommon. Riparian Woodland. 62 Comment
  CHSC8213  Holcus lanatus B. Hamilton 1969-4-15 4 Butte Found near irrigation ditch on corner of Ord Ferry and Butte-City-Chico Rd. Comment
  CAS-BOT-BC150115  Holodiscus microphyllus var. glabrescens H. F. Copeland 1928-8-14 398 Butte Near Jonesville. Between Jones Creek and Scotch-John Creek 1828 Comment
  RSA550555  Hordeum brachyantherum L. Ahart 1981-5-24 2836 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 1/15 mi. E of Honcut 50 Comment
  CHSC2151  Hordeum marinum subsp. gussoneanum H. Silberman; D. Isaac 1949-5-4 Butte Humboldt road, 2 mi. E. of Chico. 121 Comment
  CHSC4320  Hordeum murinum subsp. glaucum M. Hillier 1966-5-29 Butte In creek bed parallel to Manzanita Ave., Chico. Comment
  JEPS119876  Horkelia californica var. elata Lowell Ahart 2012-6-2 18137 Butte About 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  CHSC48849  Horkelia fusca subsp. parviflora Vernon Oswald 1985-7-2 1882 Butte Skyway (Bull Hill Rd.) at Coon Creek, 5.5 mi se of Butte Meadows. On bank of creek in a meadow. 1554 Comment
  CAS-BOT-BC143979  Horkelia fusca var. tenella H. F. Copeland 1928-8-20 458 Butte Jonesville 1524 Comment
  UCD113498  Horkelia fusca var. tenella H. F. Copeland 1928-8-2 371 Butte Jonesville. 1524 Comment
  SEINET10483369  Horkelia tridentata Mary Susan Taylor 1980-5-8 Taylor 2613 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
  CHSC45799  Horkelia tridentata subsp. flavescens L. P. Janeway 1988-6-19 2833 Butte 3.1 mi N of Stirling City towards Inskip. Along logging rd 0.2 mi W of The Skyway. Meadow. 1219 Comment
  UC600377  Horkelia tridentata subsp. tridentata H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC26695  Hosackia crassifolia M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1471 Butte On n side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  CHSC48517  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-26 2930 Butte Rancho Bosquelo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). On an old channel of the river. 48 Comment
  LA47950  Hosackia oblongifolia var. oblongifolia E. B. Copeland; 1930-7-11 420 Butte Jonesville 1500.0 Comment
  SD2572  Hosackia oblongifolia var. oblongifolia E. B. Copeland 1930-7-11 420 Butte Jonesville, in sunny places wet ,at least, below the surface 1500 Comment
  CHSC65558  Hosackia stipularis var. ottleyi L. P. Janeway 1995-6-22 4807 Butte Watson Ridge; about 1.2 mi south of Pompys Point. South side of the ridge, at edge of Road 21N25A. 1097 Comment
  CHSC42583  Hydrocotyle umbellata Vernon Oswald 1985-6-26 1865 Butte Oroville Wildlife Area ca. 0.6 mi s of the Hwy 162 entrance. 36 Comment
  UC1532351  Hydrocotyle verticillata Vernon Oswald 1986-6-11 2110 Butte just e. of Diversion Dam (Upper Bidwell Park, on s. side of Upper Park Rd., Chico); Chico, Upper Bidwell Park 134 Comment
  CAS-BOT-BC400831  Hypericum anagalloides A. A. Heller 1914-8-6 11637 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC400832  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CHSC45901  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte Growing on moist granite soil, near the edges of small seeps, near Bean Creek Road, near the south side of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  SEINET3082827 Image available Hypericum anagalloides Marc Mittleman 1980-8-1 224 Butte Chico (little) Creek, adjacent to China Garden Springs 262 Comment
  CHSC116020  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 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
  CHSC37395  Hypericum perforatum R. A. Schlising 1980-8-31 3972 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC741  Hypericum perforatum H. Reid 1949-6-1 Butte Paradise. 548 Comment
  RSA754794  Hypochaeris glabra L. Ahart 2009-5-8 15654 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  SEINET10872150  Hypochaeris glabra Mary Susan Taylor 1980-5-27 Taylor 2682 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
  CHSC43254  Hypochaeris radicata Lowell Ahart 1987-10-16 5913 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  SD3949  Ipomopsis aggregata E. B. Copeland 1929-7-24 Butte Jonesville. 1550 Comment
  UC398944  Ipomopsis aggregata E. B. Copeland 1929-7-24 394 Butte Jonesville 1500 Comment
  SEINET6190908 Image available Iris douglasiana A. A. Heller 1919-1 13102 Butte Butte County Comment
  RSA135944  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20697 Butte 7 miles northeast from Pentz Trading Post on road to U.S. Highway 40 alt. from Oroville-Magalia road 579 Comment
  SBBG1118  Iris hartwegii H. and M. Dearing 1938-6-21 2055 Butte 21 mi NE of Chico Comment
  SEINET10469750  Iris macrosiphon Mary Susan Taylor 1976-4-4 Taylor 1060 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC36900  Iris tenuissima J. D. Nishball 1982-4-16 12 Butte Ca. 8.5 mi. se of Chico, off Honey Run Rd., s end of Covered Bridge; Butte Creek Canyon. 115 Comment
  CAS-BOT-BC69902  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte E. of North Honcut Creek, on the Joie Osgood Ranch, about 1.5 mi. n. and 3 mi. e. of Honcut, about 12 mi. se. of 60 Comment
  CHSC116702  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC29111  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-5-15 2635 Butte Cohasset Ridge, ca. 1/4 mi e of Cohasset Rd, ca. 9 mi ne of Chico. 396 Comment
  CHSC30306  Isoetes nuttallii M. S. Taylor 1980-5-27 2678 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CAS-BOT-BC61877  Isoetes nuttallii Lowell Ahart 1975-6-20 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut 38 Comment
  SEINET10536079  Isopyrum occidentale Mary Susan Taylor 1980-4-6 Taylor 2460 Butte Swedes Flat Road, ca. 1 mi E of its jct with Bangor-Oroville Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 335 Comment
  CHSC23691  Jensia rammii M. S. Taylor 1976-5-3 1102 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC93642  Juglans californica var. hindsii Paul Kirk 2001-10-19 11 Butte City of Chico, at corner of W. 3rd Ave. and Arcadian. 51 Comment
  HSC68033  Juglans nigra J. P. Smith, J. O. Sawyer 1973-4-14 6062 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  SEINET10938201  Juncus Mary Susan Taylor 1980-5-27 Taylor 2676 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
  CAS-BOT-BC109892  Juncus Lowell Ahart 1981-7-24 2999 Butte Sierra Nevada. About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CHSC112884  Juncus acuminatus Robin Carter; Sabrina Bell 2011-5-18 Butte Sacramento Valley. Ca 0.8 air mi E of Hwy 99, in N end of Thermalito Afterbay, ca 0.3 mi S of Tres Vias Rd. on E side of hill toward upper end of S-trending peninsula. 42 Comment
  CHSC78328  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS122227  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  JEPS98488  Juncus bufonius var. bufonius Lowell Ahart 2000-7-11 8565 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) Comment
  CHSC112937  Juncus bufonius var. congestus B. Castro 2012-5-29 1925 Butte Sacramento Valley. Between hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  CHSC44523  Juncus bufonius var. congestus Lowell Ahart 1988-5-15 6005 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC61518  Juncus bufonius var. congestus Lowell Ahart 1993-5-15 6940 Butte Fallow rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC71104  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte Graded north side of Evens Reimer Road, about 1/4 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  JEPS87149  Juncus bufonius var. occidentalis Lowell Ahart 1992-7-29 6882 Butte ca. 3/4 mi. n.w. Lotts Lake (ca. 1 mi. n.e. of Carr Mine) 1798 Comment
  CHSC112909  Juncus capitatus B. Castro; Robin Carter 2011-4-29 1871 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
  SEINET10472434  Juncus capitatus Mary Susan Taylor 1978-5-7 Taylor 1601 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC115687  Juncus cyperoides Emily Meigs Doe 2015-5-11 27 Butte Northern High Sierra Nevada. Plumas National Forest. About 2 miles (air) NW of Forbestown. About 200 ft. SE of Rd. 19N19, approx. 0.82 mi. (air) NE of its intersection with Ponderosa Way. 768 Comment
  JEPS115641  Juncus dubius Lowell Ahart 2009-8-12 16292 Butte On dark wet soil or in shallow water, meadow, along small drainages, 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 236 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  CHSC39675  Juncus effusus subsp. pacificus Lowell Ahart 1983-6-21 4099 Butte Found along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  SEINET10938193  Juncus effusus var. pacificus Mary Susan Taylor 1977-8-16 Taylor 1449 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  JEPS120032  Juncus exiguus Lowell Ahart 2012-6-21 18211 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC117019  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte Depression (mud puddle) in the middle of a poor road, about 50 yards east of cow corral, about 200 yards north of the County Road, about one mile we of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CHSC46601  Juncus hemiendytus var. hemiendytus V. Oswald; L. Ahart 1989-7-12 3848 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC113944  Juncus howellii Lowell Ahart 2014-8-13 19705 Butte East edge of a large wet meadow, about 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC44444  Juncus howellii Lowell Ahart 1988-6-23 6071 Butte In the meadow, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC69059  Juncus howellii Lowell Ahart 1997-8-1 7761 Butte On the bottom of Little Kimshew Creek, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC47560  Juncus leiospermus Lowell Ahart 1984-5-7 4589 Butte On the east side of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CAS-BOT-BC110147  Juncus leiospermus var. ahartii Lowell Ahart 1978-4-18 1648 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UC1586561  Juncus leiospermus var. ahartii Lowell Ahart 1991-5-2 6647 Butte about 2 1/4 mi n and 1/2 mi e of Honcut (about 12 mi s of Oroville, Peter Ahart Ranch); Peter Ahart Ranch 39 Comment
  CHSC93498  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12588 Butte Margins of a vernal pool where there is basalt shelfing, about 100 yards south of the Gray Pine on the rim of Coal Canyon, about 1 3/4 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 354 Comment
  JEPS110150  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-3 12558 Butte On the sides of vernal pools, 20 feet south of the fence, about 5/8 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 405 Comment
  JEPS110170  Juncus nevadensis Lowell Ahart 2006-8-15 13179 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CDA39188  Juncus nevadensis T. C. Fuller 1962-6-12 9201 Butte Bottomland of Butte Creek, 2 miles east of Butte Meadows. 0 Comment
  CHSC78338  Juncus occidentalis Lowell Ahart 2000-6-29 8535 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
  CHSC96882  Juncus occidentalis Lowell Ahart 2007-7-15 14308 Butte Along the west side of Encina Grande Road (Bloomer Hill Road), about 150 yards north and south of homes, about 1 1/2 miles (air) southeast of Bloomer Hill. 656 Comment
  CHSC28665  Juncus orthophyllus J. D. Jokerst 1979-11-4 400 Butte At edge of creek in large meadow. 100 mets. SE. of intersection of Butte Cr. and Humbug Rd. (Butte Creek House). 1767 Comment
  RSA755380  Juncus patens L. Ahart 2009-7-9 16004 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  CHSC80894  Juncus tenuis Lowell Ahart 2001-7-6 8885 Butte West of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS113853  Juncus triformis Lowell Ahart 2007-6-12 14075 Butte Seeps, about 50 yards south of Bean Creek Road, about 1/4 mile (air) southeast of Little Bald Rock, about 15 miles (air) northeast of Oroville 974 Comment
  UC1495745  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte about 2 mi n and 0.5 mi e Honcut (Peter Ahart Ranch) 50 Comment
  CHSC111175  Juncus usitatus Lowell Ahart 2013-6-18 18808 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southest of Gridley. 19 Comment
  CHSC113971  Juncus usitatus Lowell Ahart 2014-11-24 19921 Butte On the sides of a small drainage, below the high water line of Lake Oroville, about 200 yards west of the second parking area, old Bidwell Bar Road, about one mile south of Oroville Quincy Highway, about 8 miles (air) northeast of Oroville. 225 Comment
  CHSC96956  Juncus usitatus Lowell Ahart 2007-7-11 14292 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  JEPS120888  Juncus usitatus Lowell Ahart 2013-6-18 18808 Butte Duck field 60 yards W of Parking Lot 14, Gray Ladge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  UC103069  Keckiella breviflora Mrs. R. M. Austin May 1896 65 Butte Iron Canyon Comment
  CHSC44721  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-5 196 Butte Along Hwy 70 at its jct with the Feather River at the Rivers edge, ca 4.3 mi N of the jct of Pinkston Canyon Rd and Hwy 70. 487 Comment
  CHSC89462  Keckiella corymbosa R. D. Fischer 2004-7-25 452 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail below Disk Golf Course, N end. 313 Comment
  JEPS95060  Keckiella lemmonii Lowell Ahart 1997-8-1 7795 Butte ca. 8 mi. (air) n.e. Stirling City (ca. 0.25 mi. e. of Table Mountain, on w. side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  CHSC50422  Kelloggia galioides Vernon Oswald; Lowell Ahart 1990-6-27 4326 Butte Oro-Quincy Hwy between Merrimac and Buckeye sites, ca. 0.4 mi south of Plumas County line. Comment
  RSA726557  Kickxia elatine L. Ahart 2007-10-31 14519 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  CHSC23405  Kumlienia hystricula M. S. Taylor 1976-3-6 1009 Butte Along Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi e of Forbestown Rd, ca. 12 mi e of Oroville. 1097 Comment
  CHSC26747  Lactuca saligna M. S. Taylor; M. Hayes 1977-8-16 1443 Butte Around maintance buildings, Butte College Campus, ca. 15 mi S of Chico. 60 Comment
  CHSC84400  Lactuca saligna Lowell Ahart 2003-8-6 10476 Butte In the road gutter on the east side of Encina Grande Road, just south of a small branch of Canyon Creek, about 1 mile west of Oroville Quincy Highway, about 2 1/2 miles (air) southwest of Berry Creek. 632 Comment
  JEPS104644  Lactuca saligna Lowell Ahart 2003-8-6 10476 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  JEPS120015  Lactuca saligna Lowell Ahart 2012-10-28 18518 Butte South of the paved park road, about 30 yards east of the restrooms and bridge, west part of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC340448  Lactuca saligna Lowell Ahart 1978-9-28 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  UCD133503  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  CHSC102720  Lactuca serriola Lowell Ahart 2009-8-9 16269 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC111604  Lactuca serriola Lowell Ahart 2012-8-10 18417 Butte The north side of the parking area, Bidwell Mansion, Chico. Uncommon. Urban. 60 Comment
  CHSC66664  Lactuca serriola Vernon H. Oswald; Lowell Ahart 1996-7-22 8081 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the W side of the levee at the SW corner of Tract 6, Sanctuary 1. 30 Comment
  UCD133539  Lactuca serriola L. E. Hazeltine 1916-7-1 s.n. Butte Chico. Comment
  CAS-BOT-BC341313  Lagophylla glandulosa David D. Keck 1930-7-25 974 Butte 6.5 miles east of Oroville on Forbestown road 425 Comment
  CAS-BOT-BC341321  Lagophylla glandulosa Alice Eastwood 1912-8-22 1933 Butte Payne Creek, Lassen Butte Region 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
  HSC43352  Lasthenia californica Maralyn O'Meara 1974-4-20 264 Butte Along drainage ditch, 1 mi. E of Hwy. 99 beside Skyway Rd. 61 Comment
  SEINET10473880  Lasthenia californica Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4282 Butte T20N R2E sw/nw sec 1. Shippee quad. SE corner of jct of Hwys 149 & 99, ca. l0 mi s of Chico. 225 ft. Valley Grassland. 68 Comment
  SEINET10475347  Lasthenia chrysostoma Mary Susan Taylor 1976-3-9 Taylor 1025 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CAS-BOT-BC324474  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte Along Butee Creek between Durham and Nelson 53 Comment
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC46949  Lasthenia fremontii Lowell Ahart 1983-5-12 3974 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 60 Comment
  JEPS119708  Lasthenia fremontii Lowell Ahart 2012-5-2 17963 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CHSC31574  Lasthenia glaberrima L. Ahart 1978-5-12 1718 Butte Near the edges of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS120546  Lasthenia glaberrima B. Castro 2007-3-29 1619 Butte Sacramento Valley. Ca 0.8 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd. In NE - SW trending swale bottom, ca 500 ft E of Cohasset Rd in area of grassland and scattered shallow vernal pools. Comment
  HSC38105  Lasthenia gracilis Thomas W. Nelson, Jane P. Nelson 1976-5-9 2451 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CDA34700  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 miles (air) northeast of Oroville. Comment
  JEPS119626  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte Annie's Glen, Lower Bidwell Park, Chico. Comment
  RSA21544  Lathyrus sulphureus Carl B. Wolf 1937-5-18 8730 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road 610 Comment
  CHSC100983  Lathyrus tingitanus L. P. Janeway 2008-4-2 9243 Butte Northern Sierra Nevada Foothills. Oroville; along high flat bank on east side of Feather River between Thermalito Diversion Dam and the Fish Barrier Dam. 65 Comment
  CHSC30039  Lathyrus tingitanus L. Ahart 1980-5-17 2304 Butte Around the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 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
  UCD150365  Lemna minor William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  CHSC112602  Lemna minuta Lowell Ahart 2013-9-20 19063 Butte Along a ditch, about 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about one mile southeast of the Rice Experiment Station. 30 Comment
  CAS-BOT-BC88735  Lepidium appelianum A. A. Heller 1924-7-6 13859 Butte Near the river bridge west of Chico. Comment
  CHSC50653  Lepidium didymum Lowell Ahart 1990-5-28 6501 Butte Along the edges of Palm Avenue, about 1/12 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  SEINET10841504  Lepidium latifolium Mary Susan Taylor 1982-5-22 Taylor 4507 A Butte T17N R1E ne/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, sw corner of jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 60 ft. 68 Comment
  CAS-BOT-BC89876  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC3239  Lepidium nitidum Virginia Hagaman 1966-3-12 57 Butte 1/2 mile northeast of Hooker Oak along stream bank, in Lower Bidwell Park, Chico. Comment
  CHSC39595  Lepidium strictum Lowell Ahart 1983-4-10 3929 Butte Along the edges of dirt roads, about 1 1/2 miles north-east of Highway 99 and Pentz Road. 100 Comment
  CHSC65685  Lepidium strictum Vernon H. Oswald 1996-3-22 7248 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 7.2. Ranch and levee roads at this location. 33 Comment
  CAS-BOT-BC13065  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-9 5601 Butte Along Pulga Road, about 2 miles southwest of Bardees Bar along the North Fork of the Feather River. 365 Comment
  UCR148775  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte W side of Hwy 70, about 100 yd N of Rich Gulch Road, 1 mi N of the West Branch Bridge across Lake Oroville, and 5 air mi SE of Paradise 335 Comment
  JEPS95945  Leptochloa fascicularis Lowell Ahart 1999-8-13 8153 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC273948  Leptochloa fusca subsp. fascicularis Lowell Ahart 1983-10-11 3858 Butte West of the check-in station, Gray Lodge, about 12 mi. SW of Gridley 35 Comment
  RSA468553  Leptosiphon androsaceus M. M. Boney 1897-1 s.n. Butte [No locality information provided] 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
  CHSC29964  Leptosiphon bolanderi R. A. Schlising 1980-6-1 3609 Butte S of Paradise at Kunkle Reservoir, off Pentz-Magalia Hwy. 440 Comment
  CHSC44221  Leptosiphon ciliatus V. Oswald; L. Ahart 1988-7-13 3579 Butte Road to High Lakes e of Philbrook Reservoir. Outcropping on the n side of the road. 1859 Comment
  SBBG98248  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte woods above Butte Crk Meadows, Jonesville 1828 Comment
  CHSC96995  Leptosiphon filipes L. P. Janeway 2007-6-20 9067 Butte Northern High Sierra Nevada. Plumas National Forest; along French Creek Road 5.0 road km northeast of Oroville-Quincy Hwy and Stanwood Saddle; 1.0 air km west of Mountain House. 884 Comment
  CHSC1272  Leptosiphon parviflorus J. Gulick 1929-4-18 Butte Rifle Range near Chico Creek. 106 Comment
  JEPS124203  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte About 9 1/2 miles north of Oroville. Comment
  SD62438  Lessingia nana Willard Spence 1962-7-24 729 Butte Route 99E, corner of Broyles Road, north of Chico Comment
  CAS-BOT-BC341794  Lessingia nemaclada R. F. Hoover 1938-8-2 3721 Butte Magalia Comment
  CAS-BOT-BC341785  Lessingia nemaclada John Thomas Howell 1959-9-20 34718 Butte At Pulga bridge, Feather River Highway Comment
  CAS-BOT-BC342060  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 mi west of Oroville 45 Comment
  UC179649  Lessingia virgata A. A. Heller 1914-9-4 11762 Butte hills 8 mi n Oroville Comment
  RSA126788  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mile west of Tres Vias 46 Comment
  HSC73015  Leucothoe davisiae M. S. Taylor, L. Ahart 1981-8-15 4179 Butte Both sides of the Skyway, 1.8mi. S of Inskip 1250 Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  UC175517  Ligusticum californicum A. A. Heller 1913-6-7 10795 Butte near Stirling 1074 Comment
  SEINET3887041  Lilaea scilloides Daphne K. Christopher, Hannah I. Stevens; Lowell Ahart 2003-4-21 226 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field.; 0 41 Comment
  SEINET10469676  Lilium Mary Susan Taylor 1980-4-18 Taylor 2499 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
  CAS-BOT-BC509476  Lilium kelleyanum Mrs. J. H. Morrison 1932-7-4 s.n. Butte Mountains above Durham Comment
  CHSC46225  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1059 Butte Ca 2.0 km s. of Inskip of w. side of Skyway. 1400 Comment
  CHSC42196  Limnanthes alba John E. Hunter 1986-4-12 46 Butte Vacant lot within City of Chico, ca 75 m nw of the intersection of East Ave. and Ceanothus Ave. Vernal pool margin. 62 Comment
  CHSC62828  Limnanthes alba Ella Icard 1893-4-1 Butte Comment
  UCD116504  Limnanthes douglasii Harriet Sindal 1970-4-25 2 Butte on Cherokee Road, 4.7 miles north from its intersection with Nelson Avenue and Clark Road, west from gate, North Table Mountain. 335 Comment
  JEPS89153  Limnanthes douglasii subsp. nivea A. A. Heller 1914-4-3 11261 Butte 8 mi nw Oroville Comment
  CHSC67541  Limnanthes douglasii subsp. rosea James D. Jokerst; M. S. Taylor 1980-3-20 486 Butte 50 m NW of junction of Bruce Rd. and Skyway, SE side Chico. Comment
  HSC43087  Limnanthes douglasii subsp. rosea Maralyn O'Meara 1974-4-20 292 Butte Table Mtn. 305 Comment
  UCD71183  Limnanthes floccosa M. Plotkin 1997-3-21 MSP 11 a Butte Chico, at intersection of Cohasset highway and Ryan Road (Ryan Road ends). 91 Comment
  CHSC35691  Limnanthes floccosa subsp. californica J. D. Jokerst 1982-4-12 1528 Butte N side Shippee Rd 1/2 mi E of Hwy 99 along side road and in a small pasture between houses N of Shippee Rd. Comment
  JEPS120764  Limnophila X ludoviciana Lowell Ahart 2013-9-20 19062 Butte About 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about 1 mile southeast of the Rice Experiment Station. Comment
  UCD19360  Limnophila X ludoviciana E. Dean; with J. Ditomaso and E. Healy 2001-8-20 851 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy, by dirt turnout half way between first two dirt roads that enter rice fields on the N side of the road. Turnout leads to walking path. 30 Comment
  JEPS123907  Limosella acaulis Lowell Ahart 2015-4-24 20068 Butte About 3/4 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  SEINET10496780  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1974-5-3 Taylor 212 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  SEINET10496794  Linanthus ciliatus Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4645 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  CHSC51016  Lindernia dubia var. anagallidea Lowell Ahart 1990-8-15 6580 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC96950  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC97926  Lindernia dubia var. anagallidea G. D. Barbe; June McCaskill 1990-9-5 4393 Butte Weedy at edge of flooded rice checks, experimental fields of the Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  JEPS120849  Lindernia dubia var. anagallidea Lowell Ahart 2013-7-9 18832 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
  SEINET3450716  Lindernia dubia var. anagallidea Unknown 2003-6-23 10305 Butte Cottonwood, Cottonwood, about 12 air miles east /northeast, about 2.8 air miles south/southwest of the Darah Springs State Fish Hatchery, about 0.25 miles south of the Coleman Canal, about 350 yards south of the barn 30 Comment
  JEPS88435  Lindernia dubia var. anagallidea Vernon H. Oswald and Lowell Ahart 1996-7-22 8083 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River, in the NW corner of Tract 9.1., Sanctuary I, a unit managed for watergrass (Echinochloa). 30 Comment
  CHSC44406  Linum bienne Lowell Ahart 1988-6-23 6076 Butte In deep ditch, south of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  SEINET12186145  Linum micranthum Unknown 1985-1 5085 Butte about 2.5 mi NE of Forbestown, roadside to the Forbestown Reservoir 869 Comment
  CHSC55620  Lipocarpha L. P. Janeway 1987-6-5 2142 Butte Border area of small pool, near confluence of Ram Creek and French Creek. 609 Comment
  CHSC112327  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC26769  Liquidambar styraciflua P. Moyer 1971-10-1 17 Butte CSUC campus. Along So-wil-len-no Ave. 60 Comment
  CAS-BOT-BC36172  Lithocarpus densiflorus var. densiflorus John R. Reeder; Charlotte G. Reeder 1972-6-6 5656 Butte ca. 4 miles N of Forest Ranch 1066 Comment
  CHSC1649  Lithophragma affine E. Canfield 1904-4-9 Butte Wood adjoining Hooker Oak field. 76 Comment
  CHSC11075  Lithophragma bolanderi Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  UCD102715  Lithophragma bolanderi Michael A. Vincent; Ethan H. Freid 1998-4-6 8135 Butte Table Mountain. Comment
  CAS-BOT-BC430878  Lithophragma bolanderi Lowell Ahart 1987-12-5 5645 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC4010  Lithophragma parviflorum D. B. Joley 1967-4-14 22 Butte Near the railroad tracks, ca. 30 feet from Skyway and ca. 1.8 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  CHSC87426  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-20 116 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along Guardian Trail, south of Pine Trail. UTM: 10609476E 4405711N. 384 Comment
  CHSC51919  Lithophragma tenellum L. P. Janeway; R. A. Schlising 1988-7-1 2910 Butte On the NE-facing flank of Snow Mtn and above Summit Lake. 2011 Comment
  CHSC27840  Lithospermum californicum T. B. Devine 1977-6-5 426 Butte Beside Humbug Rd. Next to PG and E Flume. 853 Comment
  SEINET11268243  Lobularia maritima Lowell Ahart 2001-4-15 8722 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley.; 0 23 Comment
  CHSC6633  Lolium M. MacArthur 1968-6-16 350 Butte 20 ft. SW of Big Chico Creek, just S of Esplanade Bridge, Chico State College campus. 60 Comment
  CHSC27295  Lolium multiflorum P. Moyer 1972-4-9 172 Butte CSUC Campus. Sacramento Ave., across from sportshop. 60 Comment
  CHSC4300  Lolium multiflorum V. Hagaman 1966-4-27 Butte Chico State Campus. Comment
  CAS-BOT-BC271210  Lolium temulentum John Thomas Howell 1963-6-2 39383 Butte Along highway near Pulga, Sierra Nevada Comment
  UC875115  Lomatium caruifolium var. denticulatum A. A. Heller 1915-3-6 11769 Butte 8 mi. n. Oroville Comment
  JEPS117226  Lomatium dissectum var. multifidum Lowell Ahart 2010-5-7 16632 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) east of Chico 301 Comment
  CDA38449  Lomatium utriculatum T. C. Fuller 1960-4-15 5007 Butte Highway 99E, ca. 10 miles northwest of Chico. 0 Comment
  CHSC39677  Lonicera hispidula Lowell Ahart 1983-8-21 4066 Butte Just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  CHSC102510  Lonicera interrupta Lowell Ahart 2009-5-30 15807 -A Butte North of a small drainage, on the east side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 411 Comment
  CHSC20532  Lonicera japonica Pamela Caldwell 1972-5-7 Butte N entrance of L.S. Bridge CSUC. 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
  JEPS87385  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  RSA719534  Lotus denticulatus Michael A. Vincent, K. Levings, Karl Vincent 2006-7-29 12877 Butte East of Chico along Route 32. Comment
  SEINET10452008  Lotus purshianus Mary Susan Taylor 1980-6-14 Taylor 2873 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, on granite dome, ca. 4 mi E of Lake Madrone. 1016 Comment
  POM27894  Lotus wrangelianus C. C. Bruce 1897-04 2089 Butte Chico Comment
  CHSC112876  Ludwigia decurrens Evan Padgett 2014-8-28 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  JEPS95926  Ludwigia palustris Lowell Ahart 1999-8-22 8186 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  HSC97109  Lunaria annua L. Ahart 2006-5-3 12554 Butte 75 yds. SE of Concow Grange building, W side of Big Bend Rd., 1.25 mi. S of Jarbo Gap 549 Comment
  UC726731  Lupinus A. A. Heller 1942-6-16 16510 Butte State Highway #24, 2 1/2 mi w Arch Rocks Tunnel; w of Arch Rocks Tunnel 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
  SFV11556  Lupinus albifrons M. L. Vincent 1965-4-16 618 Butte Pentz Road and Highway 70 below highway in ravine. Comment
  UCD105996  Lupinus albifrons Marian Vincent 1965-4-16 618 Butte Pentz Road and Hwy. 70. Comment
  SEINET10452618  Lupinus albifrons Mary Susan Taylor 1981-4-5 Taylor 3480 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET10488403  Lupinus albifrons T. R. Norton 1977-4-17 Norton 6 Butte Shrub, ca 3 ft high. Small population, ca 7.5 miles e of chico, 3.5 miles sw of Paradise along s side of honey run road. Rocky soil on road bank within Chaparral 244 Comment
  CDA38768  Lupinus albifrons var. albifrons L. Ahart 2012-4-2 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC115358  Lupinus albifrons var. albifrons Lowell Ahart 2015-3-21 19957 Butte Steep east road cut, along Oregon Gulch Road, about one mile south of Oregon city, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  CAS-BOT-BC196244  Lupinus albifrons var. eminens Lowell Ahart 1967-4-12 s.n. Butte Bidwell Bar 609 Comment
  UCR237327  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC48525  Lupinus bicolor var. pipersmithii Vernon Oswald 1985-3-17 1686 Butte Peter Ahart Ranch ca. 2 mi ne of Honcut. 32 Comment
  CHSC98967  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 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
  HSC66228  Lupinus densiflorus Thomas A. Welgan 1979-4-15 9 Butte 4.5 mi N of Oroville, 5 ft. W of Cherokee Mtn. Rd. 305 Comment
  UC725350  Lupinus latifolius var. columbianus A. A. Heller 1940-6-5 15705 Butte Feather River Highway between Arch Rock Tunnel and Pulga; Feather River Highway btw Arch Rock Tunnel and Pulga Comment
  CHSC33129  Lupinus microcarpus var. microcarpus J. D. Jokerst 1981-4-29 1301 Butte Adjacent to entrance road to Butte College Campus from Pentz Road. 76 Comment
  CHSC36142  Lupinus nanus Don K. Aust 1981-4-15 19 Butte Ca. 1 mi n of Chico, e side of Cohasset Hwy. 60 Comment
  CHSC79742  Lupinus nanus G. F. Hrusa; T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada Flora - Plumas National Forest. Roadside colony along Hwy 162 near entrance to Rogers Cow Camp. [Lat./Long. on label is '39 46 N; 121 17 W']. 1250 Comment
  CHSC48535  Lupinus nanus var. apricus Vernon Oswald 1983-3-31 245 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 103 Comment
  JEPS115828  Lupinus nanus var. vallicola Lowell Ahart 2009-4-26 15618 Butte In a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 286 Comment
  CHSC31811  Lupinus polycarpus L. Ahart 1978-5-1 1686 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SBBG128005  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte ca. 70 yards E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1917 Comment
  POM276281  Lupinus vallicola subsp. apricus Lyman D. Benson 1935-3-27 6363 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  RSA712860  Lupinus vallicola subsp. vallicola L. Ahart 2006-5-8 12594 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon,about 2 miles northwest of the parking area, cow chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 338 Comment
  CHSC107577  Luzula cascadensis Lowell Ahart 2011-8-23 17652 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  CHSC7189  Luzula comosa var. subsessilis H. Alger 1969-2-23 2 Butte 10 ft. s of Helltown Rd., 0.8 mi n of Centerville. 243 Comment
  CAS-BOT-BC441209  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 4091 Butte About 2 mi. E of Bidwell Bar Bridge Comment
  JEPS94068  Luzula parviflora Vernon H. Oswald and Lowell Ahart 1998-8-11 9469 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi. n. of Four Trees-Coyote Gap Rd. 1396 Comment
  SEINET10498035  Lycopus americanus Mary Susan Taylor 1977-10-10 Taylor 1520 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  OBI48938  Lythrum hyssopifolia Lewis S. Rose 1939-6-11 39275 Butte 3 mi E of Honcut 46 Comment
  SEINET3155238  Lythrum hyssopifolia L. S. Rose 1939-6-11 39275 Butte 3 miles E of Honcut 46 Comment
  JEPS120768  Lythrum portula Lowell Ahart 2013-9-20 19060 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CAS-BOT-BC342643  Madia citrigracilis Vern Oswald; Bruce Baldwin 1988-6-16 3388 Butte Camp Creek Rd. ca. 0.5 mi ene of Pulga 512 Comment
  JEPS98925  Madia citrigracilis Bruce G. Baldwin, Vern Oswald 1988-6-16 716 Butte along Camp Creek Road, near Pulga 512 Comment
  JEPS87530  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC342725  Madia elegans H. E. Brown 1897-4-15 196 Butte Collected near Clear Creek Comment
  CHSC102734  Madia elegans subsp. densifolia Lowell Ahart 2009-7-9 16015 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road,Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC344321  Madia exigua John Thomas Howell 1962-6-15 37487 Butte Magalia 731 Comment
  CAS-BOT-BC344322  Madia exigua John Thomas Howell 1962-6-16 37609 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  HSC96907  Madia exigua L. Ahart 2006-6-9 12650 Butte E side of Bardees Bar Rd., S of the small stream, about 1/4 mi. SW of the poor bridge scross the N Fork of the Feather River at Bardees Bar, about 2 3/4 mi. (air) SW of Pulga 404 Comment
  CAS-BOT-BC344309  Madia exigua A. A. Heller; H. E. Brown 1902-5-12 5532 Butte Grade between Clear Creek and Paradise Comment
  CHSC11829  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville. 1500 Comment
  CAS-BOT-BC342956  Madia gracilis Clarence R. Quick 1952-9-7 52 -317 Butte Fire trail just south of Coyote Gap (east of Pulga) Comment
  CDA34718  Madia subspicata L. Ahart 2010-6-1 16751 Butte South side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  JEPS107879  Madia subspicata Lowell Ahart 2005-5-7 11788 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  CHSC46240  Maianthemum racemosum Pauleen Broyles 1987-7-19 1081 Butte Ca 7.2 km (air) NE of Inskip. 1770 Comment
  CHSC66293  Maianthemum racemosum Lowell Ahart 1996-6-5 7683 Butte About 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  SEINET10971246  Malacothrix californica Mary Susan Taylor 1974-4-30 Taylor 192 Butte Along Cohasset Road, NE of Chico. Comment
  CDA8300  Malacothrix floccifera L. Ahart 2004-6-22 11113 Butte On the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. Comment
  SD8992  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Comment
  CDA14064  Malus sylvestris G. F. Hrusa, T. D. Wilfred 1997-5-1 13711 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC1036  Malva neglecta F. Johnson 1937-6-4 Butte Near Chico. 57 Comment
  RSA754953  Malva nicaeensis L. Ahart 2009-6-12 15840 Butte 10-50 yards north of the Bear s Lair Picnic Area and Coastal Redwood Grove sign, about 80-130 yards east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  SEINET3441872  Malva parviflora Unknown 2003-5-9 10122 Butte Dobbins, Dobbins, about 3 air miles northeast, about 0.5 miles north of Fountain Hill Road, about 3 miles south of Oregon Hill Road, west side of Fountain Hill road 20 Comment
  CHSC66671  Malvella leprosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8094 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 1.1, Sanctuary II. 33 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
  JEPS115824  Marah watsonii Lowell Ahart 2009-4-26 15648 Butte On the east side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC12135  Marsilea vestita B. A. Jenkins 1972-5-1 2 Butte 75 yds se of Humboldt Road-Fir Street Junction, Chico. Comment
  CHSC46037  Marsilea vestita Lowell Ahart 1978-5-15 1724 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10530355  Marsilea vestita Mary Susan Taylor 1975-10-4 Taylor 958 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  JEPS95739  Marsilea vestita subsp. vestita Lowell Ahart 1995-7-15 7593 Butte 12 mi S of Oroville (Peter Ahart Ranch; 1 1/2 mi N and 3/4 mi E of Honcut) 36 Comment
  CHSC11385  Matricaria discoidea Lowell Ahart 1971-4-13 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC389  Matricaria discoidea B. Richardson 1929-4-16 Butte CSC Campus. 54 Comment
  CHSC77476  Matricaria discoidea Anna Pinsky 1997-4-30 37 Butte Upper Bidwell Park, between Bear and Salmon Hole, 100-200 ft above Big Chico Creek. Comment
  CAS-BOT-BC348265  Matricaria occidentalis M. S. Taylor; L. Ahart; J. Jokerst 1982-4-28 4359 Butte Graylodge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley 21 Comment
  UCD134447  Matricaria occidentalis L. Ahart 1977-4-25 1320 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS87777  Medicago arabica Lowell Ahart 1994-3-30 7278 Butte Oregon City School House Oroville (garden area at ne corner, about 7 mi n of Oroville); Oregon City 365 Comment
  SEINET12155157  Medicago arabica P. L. Ricker 1912-1 3956 Butte Chico Comment
  CHSC38518  Medicago polymorpha Vernon Oswald 1983-4-6 290 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and s). 256 Comment
  CHSC944  Medicago polymorpha E. Canfield 1904-5-10 Butte Hooker Oak field. 76 Comment
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  UCD86345  Melica bulbosa Copeland 1931-6-22 606 Butte Jonesville. 609 Comment
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile 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. 599 Comment
  UCD87264  Melica fugax E. B. Copeland 1944-7-6 s.n. Butte Butte Meadows. Comment
  CHSC93792  Melica harfordii Lowell Ahart 2006-5-19 12638 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
  CHSC54118  Melica torreyana Vernon H. Oswald; Lowell Ahart 1991-5-13 4584 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 170 Comment
  RSA712996  Melica torreyana L. Ahart 2006-5-19 12632 Butte 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. On the west side of the dirt road 406 Comment
  JEPS102576  Melilotus officinalis Lowell Ahart 2001-6-13 8817 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 miles east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CHSC110327  Mentha arvensis B. Castro; Margie Graham 2006-8-25 1608 Butte Sacramento Valley. Ca 3 mi W of Highway 99 and 2 mi S of Richvale and ca 250 ft N of Hwy 162 in Cherokee Canal.. On E side of canal abt 120 ft in from toe of E levee. 29 Comment
  JEPS120581  Mentha arvensis Lowell Ahart 2013-10-19 19142 Butte Along the west side of the Sacramento River, about 300 yards north of the bridge, west of Butte City Comment
  CHSC43844  Mentha canadensis B. Castro 1987-8-25 207 Butte At s edge of Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC94013  Mentha canadensis R. Fischer 2004-6-12 685 Butte Collected from Bidwell Park near the bottom of 10 Mile House Road, east side of Big Chico Creek, near north end of park property. Plants were growing at the edge of perennial meadow drainage. 219 Comment
  UC1562283  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte on bottom of Wyman Ravine on e side of Lincoln Boulevard Palermo (Palermo) 45 Comment
  CHSC94587  Mentha spicata var. spicata Lowell Ahart 2006-9-13 13319 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC45299  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1987-7-1 3053 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. Scattered on a massive, dry, outcrop of metavolcanic rock on the w side of Scotts John Creek. 1828 Comment
  CHSC4697  Mentzelia laevicaulis R. Carter 1966-7-10 469 Butte Found Feather River Canyon 4.4 mi W of Butte Co. line along W side Hwy. 70, growing on dry granite slope along Hwy. 70. 609 Comment
  CAS-BOT-BC428759  Micranthes californica Mrs. C. C. Bruce 1897-3-1 2042 Butte Little Chico Comment
  CHSC81305  Micranthes integrifolia J. Trizzino 2001-2-22 5 Butte North side of Humboldt Road, ca 0.5 mi east of intersection with Bruce Road. 112 Comment
  CAS-BOT-BC429072  Micranthes odontoloma H. F. Copeland 1930-7-12 s.n. Butte Jonesville 2000 Comment
  CHSC25283  Micranthes oregana M. S. Taylor 1977-7-15 1406 Butte In ne corner of Butte Meadows, ca. 20 mi ne of Chico. 1326 Comment
  SEINET10475174  Micropus californicus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5382 Butte T22N R2E nw sec 25. N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland; 600 ft elev. 183 Comment
  SEINET10871997  Micropus californicus Mary Susan Taylor 1981-5-21 Taylor 3775 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
  UCD134508  Micropus californicus E. H. Stanford 1940-4-14 s.n. Butte Morrison Ravine at Cherokee. Comment
  CHSC12125  Micropus californicus var. californicus K. O. Grigsby 1972-4-26 4 Butte In Chico city limits on Skyway, intersection of Notre Dame Blvd. 60 Comment
  CHSC14005  Micropus californicus var. californicus D. Farrell 1974-4-30 15 Butte Collected ca. 5 mi ne of Oroville on top of Table Mountain. 388 Comment
  CHSC4591  Micropus californicus var. californicus C. Glascock 1965-5-11 378 Butte Ca. 7.5 mi. ne of Chico and 3.6 mi. s of Russell Dr., S Paradise, ca. 30 yds. se of Hwy. Comment
  HSC23411  Micropus californicus var. californicus Carolyn Fante 1971-4-18 2 Butte N side of Pentz Rd. 76 Comment
  SEINET10473427  Microseris Mary Susan Taylor 1982-5-2 Taylor 4380 Butte T21N R4E sw/se sec 16. Cherokee quad. Along Truex Rd in Foothill Woodland, 0.5 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville. 1200 ft. 366 Comment
  CHSC29734  Microseris acuminata J. D. Jokerst 1980-4-17 597 Butte Top of North Table Mt, around the edges of vernal pools. 441 Comment
  CAS-BOT-BC348695  Microseris acuminata K. L. Chambers 1952-5-16 409 Butte 2.3 mi. s. of Cherokee, on road from Paradise to Oroville Comment
  SEINET3441870  Microseris lindleyi Unknown 2003-5-15 10178 Butte Oroville, Oroville, about 12 miles southeast, dredge piles on west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  SEINET10475169  Microseris linearifolia Mary Susan Taylor 1986-5-6 Taylor 5613 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  POM183423  Microseris sylvatica L. S. Rose 1931-4-12 s.n. Butte Honcut Comment
  SEINET10496809  Microsteris gracilis Mary Susan Taylor 1973-1 Taylor 60 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC42967  Mimetanthe pilosa Lowell Ahart 1987-7-3 5770 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
  JEPS86870  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte 0.5 mi s Derrick Road (along e side of Cherokee Road, vernal pool ca. 100 yds. from road); Table Mt. 400 Comment
  RSA535779  Mimulus angustatus David M. Thompson 1988-3-23 851 Butte Table Mt. 0.5 mi s of Derrick Road along cherokee Road, E side of road 396 Comment
  JEPS10563  Mimulus congdonii R. F. Hoover 1938-4-24 3240 Butte 3 mi n Chico Comment
  UCD96099  Mimulus glaucescens Dena Grossenbacher; Brian Green 2008-5-4 815 Butte Upper Bidwell Park on banks of Lindo Diversion Channel North of Centennial Ave. 80 Comment
  JEPS104651  Mimulus guttatus Lowell Ahart 2003-7-17 10419 Butte On the e side of Black Bart Rd, ca 1/2 mi w of the intersection of Forbestown Rd and Black Bart Rd, ca 4 mi (air) sw of Forbestown. 716 Comment
  POM252825  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte Summit of Table Mtn. 305 Comment
  UC886180  Mimulus guttatus A. A. Heller 1917-7-26 12813 Butte Butte Meadows 1280 Comment
  UC886239  Mimulus guttatus A. A. Heller 1938-4-14 15028 Butte summit Table Mountain 304 Comment
  UCR190823  Mimulus guttatus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  SEINET10570236  Mimulus kelloggii Mary Susan Taylor 1980-4-27 Taylor 2552 Butte T23N R3E west center border sec 26. Paradise quad. On N side of Ponderosa Way Road, ca. 0.5 mi E of Nimshew Rd, ca. 1 mi S of Nimshew; in open vernally dry embankment. With J.D. Jokerst. 610 Comment
  RSA535437  Mimulus layneae David M. Thompson 1988-6-8 937 Butte 0.2 mi E of Zinc Road (S jct) along Bald Rock Road. 750 Comment
  JEPS122032  Mimulus moschatus Lowell Ahart 2014-7-2 19538 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  SEINET12334057  Mimulus nasutus Unknown 1977-1 8 Butte ca 200 m NW of Cherokee Rd, North Table Mountain, 8 km N of Oroville 366 Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  SFV3401  Mimulus torreyi M. L. Vincent 1960-7-12 96 Butte Sierra Nevada On shore of new Paradise Dam, north of Paradise. 780 Comment
  SEINET10570285  Mimulus torreyi Mary Susan Taylor 1977-7-15 Taylor 1416 Butte Humbug Rd, between Honey Run Covered Bridge and Paradise. 579 Comment
  UC1468291  Mimulus tricolor L. Ahart 1983-6-6 4029 Butte 2.5 mi ne Honcut; Peter Ahart Ranch 50 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
  CHSC61721  Minuartia cismontana Mark D. Reiser 1992-4-17 17 Butte Meadow ca. yds sw of Vilas Rd., Cohasset Stage, ca. 8 mi ne of Chico Municipal Airport. 609 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
  CHSC103963  Minuartia douglasii Lowell Ahart 2010-5-7 16623 Butte On the south 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
  CHSC31561  Minuartia douglasii L. Ahart 1974-4-14 397 Butte Along a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC30060  Moenchia erecta L. Ahart 1980-5-4 2192 Butte East of the Oak Grove Cemetery, ca. 3/4 mi se of Hurlton. 600 Comment
  CHSC42101  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  JEPS95930  Mollugo verticillata Lowell Ahart 1999-8-13 8176 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET9776682 Image available Mollugo verticillata Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CAS-BOT-BC435070  Mollugo verticillata Lowell Ahart 1984-8-19 4787 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville 40 Comment
  CHSC39334  Monardella breweri subsp. lanceolata Lowell Ahart 1983-6-26 4134 Butte Along Ponderosa Way, near the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC51226  Monardella breweri subsp. lanceolata Lowell Ahart 1980-6-19 2389 Butte Along the edge of Swedes Flat Road, about 1/10 mile east of Rocky Honcut Creek, about 2 1/2 miles east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  SEINET12329572  Monardella lanceolata L. Ahart, Ahart, P. 1984-1 4652 Butte Along Hwy 40, now called Dark Canyon Rd, ca 2mi E of Old Yankee Hill, ca 16mi NE Oroville 450 Comment
  POM252835  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte On a stony open slope in serpentine 23 miles from Oroville River Highway. Comment
  RSA232885  Monardella sheltonii L. S. Rose 1968-6-12 68114 Butte Feather River Canyon; Pulga. 488 Comment
  CAS-BOT-BC444610  Montia chamissoi Mrs. Marian L. Campbell 1916-7-4 s.n. Butte Nelsons Comment
  CHSC33108  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte Along creek in Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC84468  Montia diffusa Lowell Ahart 2003-7-12 10378 Butte Near a small stream, on the west side of Milsap Bar Road, about 2 1/2 miles (air) east of the Brush Creek Work Center, about 17 miles (air) northeast of Oroville. 1036 Comment
  HSC32652  Montia fontana David Johnson 1974-4-20 57 Butte Table Mtn. Comment
  CHSC31854  Montia fontana subsp. amporitana L. Ahart 1974-2-12 300 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40382  Montia fontana subsp. chondrosperma L. Ahart; J. Jokerst 1985-5-10 4952 Butte On the bottom of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UCD111881  Morus alba John Thomas Howell 1961-9-22 36638 Butte Oroville. Feather River. 53 Comment
  UCD86404  Muhlenbergia andina William Anderson 1965-8-7 s.n. Butte Deer Creek Falls. State Hwy. 32. Comment
  CAS-BOT-BC260538  Muhlenbergia filiformis A. A. Heller 1917-7-28 12833 Butte Butte Meadows 1280 Comment
  CHSC34166  Muhlenbergia mexicana L. Ahart 1981-9-19 3182 Butte Along banks of Feather River ca. 100 m n of Arch Rock Tunnel on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  CHSC49561  Muhlenbergia minutissima Vernon Oswald 1987-8-10 3198 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi e of Jonesville. 1813 Comment
  SD271  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville, on gravelly bank of pond, as water retreats during summer 1750 Comment
  UC1594699  Muhlenbergia minutissima Lowell Ahart 1992-7-21 6799 Butte about 2 air mi ne Philbrook Reservoir (sides of snow lake on s side of valley); Coon Hollow 1737 Comment
  CAS-BOT-BC274933  Muhlenbergia rigens A. A. Heller 1923-9-3 13827 Butte At the Phelan Ranch near Chico Comment
  SEINET10508207  Muhlenbergia rigens Mary Susan Taylor Taylor 992 Butte Bidwell Park, Chico. Comment
  POM197047  Nama lobbii H. F. Copeland 1928-8-14 1068 Butte Neighborhood of Jonesville. On top of ridge between Jones Creek and Scotch-John Creek. 1829 Comment
  CDA34496  Nasturtium officinale Stewart, Michael 2011-4-26 PDR# 1373326 Butte In the vicinity of Gridley, on Locust Street near Georgia and Idaho Street. Comment
  POM183171  Navarretia divaricata H. F. Copeland 1930-7-18 1334 Butte Jonesville. 1524 Comment
  CHSC105821  Navarretia divaricata subsp. divaricata Lowell Ahart 2010-9-28 17249 Butte On the west side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC87539  Navarretia divaricata subsp. vividior R. D. Fischer; Jenny Marr 2004-5-9 135 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on the Annie Bidwell Trail between Diversion Dam and junction of Bloody Pin Trail. 198 Comment
  CHSC69660  Navarretia filicaulis Vernon Oswald; Lowell Ahart 1997-9-9 8860 Butte Northeast of Forest Ranch on Doemill Rd. 1.3 mi west of Butte Creek Bridge, 0.6 mi east of Garland Rd. Roadside. 792 Comment
  CHSC36713  Navarretia heterandra D. H. Ikeda 1980-5-8 346 Butte 0.3 mi n of intersection of Pentz Rd. and Williams Rd. on e side of the road. In vernal pool. Comment
  UCD85193  Navarretia heterandra CNPS SN Foothill Team 2006-5-18 SNNR 0978 Butte Shasta Land Trust Easement, Hathaway Ranch. 268 Comment
  JEPS120937  Navarretia intertexta Lowell Ahart 2013-5-23 18705 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC30683  Navarretia intertexta subsp. intertexta M. S. Taylor; L. Ahart, R. Schlising 1980-5-31 2758 Butte Kunkle Reservoir, e side, e side of Pentz-Magalia Hwy, ca. 2 mi s of Paradise. 441 Comment
  CHSC38592  Navarretia leptalea Vernon Oswald 1982-7-9 Butte Upper Bidwell Park, Chico, in Lindo Channel near the weir of the Diversion Channel. Along the edge of a pool. 79 Comment
  CHSC1296  Navarretia leucocephala P. Delaplane 1965-3-23 78 Butte H. Wurlitzer Ranch ca 13 mi. NW of Chico, W of Hwy 99E North. 60 Comment
  CHSC36432  Navarretia leucocephala D. H. Ikeda 1980-5-10 355 Butte 0.4 mi w of intersection of Hwy. 99 and Broyles Rd., on n side of road in a field. Comment
  CHSC4468  Navarretia leucocephala C. Glascock 1965-3-23 337 Butte Ca. 0.5 mi. S from US99E on Broyles Rd (ca. 10 mi. NW of Chico). At W roadside. Comment
  SEINET10496829  Navarretia leucocephala Mary Susan Taylor 1978-5-7 Taylor 1610 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10496831  Navarretia leucocephala Mary Susan Taylor 1978-5-7 Taylor 1596 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  UC75581  Navarretia leucocephala Mrs. Elbridge Miles Butte Comment
  CHSC66962  Navarretia leucocephala subsp. leucocephala James D. Jokerst; Chuck Ricard 1993-4-12 3948 Butte Vernal pool preserve S and adjacent to Table Mtn. Municipal Golf Course, W and adjacent to Oroville Municipal Airport. 53 Comment
  JEPS117326  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2010-5-22 16718 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
  CAS-BOT-BC230473  Navarretia nigelliformis var. nigelliformis A. A. Heller 1914-5-14 11402 Butte 8 miles N of Oroville, near Dry creek SW of Pentz Comment
  CHSC28860  Navarretia tagetina J. D. Jokerst 1979-5-18 463 Butte Top of North Table Mt, ca 400 met NW of jct of E edge of Mt and Cherokee Rd. 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
  CHSC91120  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  CHSC23851  Navarretia viscidula K. R. Stern 1974-7-2 5779 Butte 1.6 mi e of intersection between Richardson Springs Road and Cohasset Highway. Roadside area. 121 Comment
  CHSC50658  Nemacladus interior Lowell Ahart 1990-5-25 6495 Butte Lake Oroville, about 1/4 mile west of the Enterprise Boat Launch Area, about 1 1/4 miles north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC44509  Nemophila heterophylla Lowell Ahart 1988-5-1 5977 Butte Iin damp soil in cracks of broken rocks, at the base of cliffs, along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 277 Comment
  CHSC52344  Nemophila heterophylla J. D. Jokerst 1985-4-23 2263 Butte Top of North Table Mountain. N of Cherokee Rd., E edge of Beatson Hollow at the second drainage N of road. 365 Comment
  CHSC87447  Nemophila heterophylla R. D. Fischer 2004-3-19 81 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found along Humboldt Trail. 426 Comment
  UC126923  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte near Oroville (in the foothills of the Sierra Nevada); foothills Sierra Nevada, nar Oroville 150 Comment
  CAS-BOT-BC7219  Nemophila menziesii H. E. Brown 1897-4-15 145 Butte Near Clear Creek 53 Comment
  CHSC103670  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC115293  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  SEINET13711422  Nicotiana acuminata Lowell William Ahart, Lowell William Ahart 1999-1 8135 Butte 12 Mi. SW of Chico, 2 Mi. SE Ordbend, Sacramento River Comment
  CHSC116131  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte On the bottom and on the west side of Dark Canyon, west of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 224 Comment
  RSA0006688  Nuphar lutea subsp. polysepala E. B. Copeland 1930-6-29 415 Butte Jonesville. 1700 Comment
  RSA0012849  Nuphar lutea subsp. polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville. 1700 Comment
  CDA3524  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte North side of Nelson West Road just east of Chico-Butte City Road, Dodge Land. 0 Comment
  UC844103  Odontostomum hartwegii Lewis S. Rose 1937-6-10 37362 Butte Hurleton 579 Comment
  UCD18873  Odontostomum hartwegii Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-5-3 182 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
  CHSC48639  Oenothera elata subsp. hirsutissima Vernon Oswald 1984-7-9 1355 Butte Hwy 70 ca. 100 ft s of Arch Rock Tunnel. 487 Comment
  CHSC77488  Olea europaea Tim Stofer 1997-4-22 21 Butte The plant was located on the east side of the trail at the shooting range, 1/4 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  SEINET12166457  Onobrychis viciifolia M. S. Taylor 1982-1 4734 Butte T23N R5E sw1/4 sw1/4 Sec 29. Pulga SW quad. end of Spur rd along Flea Valley Ridge, see comments 1067 Comment
  SEINET10971520  Ophioglossum lusitanicum subsp. californicum Lowell Ahart 1983-3-27 Ahart 3901 Butte Joie Osgood Ranch, ca. 4 mi NE of Honcut. Valley Grassland; 85 m. 85 Comment
  CAS-BOT-BC349986  Oreostemma alpigenum var. andersonii A. A. Heller 1914-8-7 11650 Butte Butte Meadows 1219 Comment
  CHSC26855  Oreostemma alpigenum var. andersonii M. S. Taylor; M. Hayes 1978-6-24 1667 Butte On N side of Old Humboldt Rd, across from Butte Meadows. 1371 Comment
  CHSC116375  Oreostemma elatum Sara M. Taylor; Scott Batiuk 2012-7-31 52 Butte Plumas National Forest. Drosera Pond. From Quincy, head west on Hwy 89, right/north on Hwy 422 toward Smith Lake, left/west on 25N20. Continue west on 25N57, left/west on 25N59. UTM Zone 10, 4428806 N, 660224 E. 1610 Comment
  CHSC51890  Orobanche fasciculata L. P. Janeway; R. A. Schlising 1988-7-22 3061 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  CAS-BOT-BC499849  Orobanche fasciculata Ahart; Jokerst 1985-5-10 4961 Butte 1/2 mi E of Potter Ravine, S of the east branch of Potter Ravine, 2.5 mi NE of Oroville Dam 350 Comment
  SEINET12326963  Orthocarpus attenuatus R. E. Preston 1979-1 18 Butte N of Cherokee Rd, 5 mi N of Oroville 366 Comment
  NY90835  Orthocarpus bicolor A. A. Heller 1902-5-10 5519 Butte Berry Canyon (near Clear Creek). Comment
  RSA20876  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8337 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  SEINET12332662  Orthocarpus purpurascens Unknown 1988-1 9 Butte North Table Mtn., Cherokee Rd ca 6 mi N of Oroville 244 Comment
  UCD23268  Oryza sativa Albert Fischer 2003-9-17 s.n. Butte Biggs Experimental Station. Comment
  CHSC52183  Osmanthus fragrans L. P. Janeway; B. Castro 1989-10-8 3648 Butte Campus of California State University, Chico. South side of Big Chico Creek, along walkway at east end of Kendell Hall. 60 Comment
  CHSC40214  Osmorhiza chilensis Lowell Ahart 1985-7-9 5119 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
  CHSC89744  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  SEINET3840915  Ottelia alismoides G. Douglas Barbe, Thomas C. Fuller 1977-9-20 2334 Butte West of Biggs Rice Experiment Station, Submersed aquatic in drainage canal, east of Cherokee Canal, approximately 0.5 kilometers south of Highway 162 Comment
  SEINET10903094  Oxalis pes-caprae Mary Susan Taylor 1975-4-6 Taylor 432 Butte Chico. 52 Comment
  CHSC101489  Packera eurycephala var. lewisrosei Samantha Mackey Hillaire 2008-6-12 1254 Butte Lassen National Forest, administered by Plumas National Forest. Powerline survey, on Rocky Ridge. East of intersection of Rim Road (23N06) and 23N06C. Approx. 1 airmile SSW of Pulga. Also T22N, R04E, S01. Area centered on roughly 631167.524638359, 4406717.59894074. 975 Comment
  CDA32009  Panicum acuminatum var. acuminatum L. Ahart 2009-6-3 15832 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CAS-BOT-BC253696  Panicum capillare Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut 45 Comment
  CHSC47625  Panicum capillare Lowell Ahart 1974-8-14 601 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC31686  Panicum dichotomiflorum L. Ahart 1978-8-30 1803 Butte Along the edge of rice field. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41981  Panicum dichotomiflorum Lowell Ahart 1986-11-14 5462 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CDA6403  Parentucellia viscosa L. Ahart 2000-5-17 8367 Butte On the south margin of the Thermalito Afterbay, north of the poor dirt road, just west of the cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. Comment
  JEPS116010  Paspalum dilatatum Lowell Ahart 2009-7-3 15993 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove parking area, Lower Bidwell park, Chico 67 Comment
  SEINET10592878  Paspalum dilatatum Lowell Ahart 1982-10-15 Ahart 3895 Butte On dry gravelly soil along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. Not common. Foothill Woodland. 50 Comment
  CHSC21003  Paspalum distichum M. S. Taylor 1975-10-3 928 Butte Along slough under first bridge south of junction of River Rd and River Rd, ca. 9 mi w of Chico. 36 Comment
  CAS-BOT-BC202818  Paxistima myrsinites Lowell Ahart 1983-3-28 3909 Butte On the east bank of Woodleaf Creek, above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 450 Comment
  UC1586598  Pectocarya pusilla Vernon H. Oswald and Lowell Ahart 1991-5-13 4580 Butte opposite spillway (between Canyon Dr and Oroville Dam Blvd, Dan Beebe Trail); Lake Oroville Recreation Area 213 Comment
  RSA178619  Pedicularis attollens A. A. Heller 1928-7-10 14673 Butte Butte Meadows. Comment
  UC171556  Pedicularis semibarbata Mrs. R. M. Austin July 1896 110 Butte Colby Comment
  CHSC31462  Pellaea andromedifolia M. S. Taylor 1981-1-5 3370 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  POM120723  Pellaea andromedifolia C. C. Bruce 1897-04 1864 Butte Butte Creek Comment
  CHSC36898  Pellaea brachyptera L. Ahart 1982-6-4 3539 Butte 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC28510  Pellaea mucronata M. S. Taylor; J. D. Jokerst 1979-10-13 2265 Butte W side of Jordan Hill Rd (Ponderosa Way on some maps) ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  SEINET10529806  Pellaea mucronata Mary Susan Taylor 1980-3-19 Taylor 2391 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  UC1605504  Pellaea mucronata var. mucronata T. A. Ranker and P. G. Trapp 1994-6-17 1623 Butte s of Paradise (Pence Rd, along pipeline below Kunkel Reservoir); Cherokee Quadrangle 7.5 min topo. map 395 Comment
  HSC23313  Pellaea mucronata var. mucronata D. C. Polen 1971-4-8 20 Butte 40 mi. N on Skyway, 7.4 mi. E of Skyway's jct. with 99E, Chico 274 Comment
  RSA408435  Penstemon M. M. Boney 1897-1 4222 Butte [No location information provided.] Comment
  CHSC109846  Penstemon azureus var. azureus L. P. Janeway 2012-6-7 10868 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
  SD4638  Penstemon deustus E. B. Copeland 1931-6-11 690 Butte Jonesville, on dry cliffs 1600 Comment
  NY600752  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte Summit east of Jonesville 2133.6 Comment
  POM43798  Penstemon heterophyllus subsp. purdyi C. C. Bruce 1897-04 2009 Butte Little Chico. Comment
  CHSC51929  Penstemon heterophyllus var. purdyi Cathy Young 1988-4-24 13 Butte Ca. 5.5 mi NE of Chico, 50 yds SE of Hwy 32. 256 Comment
  UC139643  Penstemon heterophyllus var. purdyi Mrs. R. M. Austin Apr. 1896 189 Butte Plains e Chico; Plains e of Chico Comment
  CDA13238  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-8 13085 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC61592  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-19 14626 Butte Forest Ranch. Comment
  POM220089  Penstemon laetus var. leptosepalus H. F. Copeland 1927-9-4 480 Butte Jonesville. Comment
  CAS-BOT-BC245684  Penstemon newberryi var. newberryi Lowell Ahart 1980-5-19 2312 Butte Near bridge, South Fork of Feather River, Sierra Nevada 800 Comment
  SEINET5329275 Image available Penstemon personatus S. Urie 1988-8-18 s.n. Butte 1554 Comment
  CAS-BOT-BC239445  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 s.n. Butte Jonesville. On gravel bars by Butte Creek 1500 Comment
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  CHSC86081  Pentagramma pallida R. D. Fischer 2003-12-26 25 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. West side of Diversion Dam parking area. 231 Comment
  CHSC29014  Pentagramma triangularis M. S. Taylor; J. D. Jokerst 1980-4-4 2447 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 365 Comment
  CHSC30368  Pentagramma triangularis J. D. Jokerst 1979-2-23 1132 Butte In the upper reaches of Hollow Cr, Top of North Table Mt., W edge. Comment
  CAS-BOT-BC77132  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-7-29 4241 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  CHSC32689  Pentagramma triangularis subsp. semipallida M. S. Taylor; L. Hanson 1981-3-16 3408 Butte E side of Truex Rd, ca. 1/2 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  CHSC46035  Pentagramma triangularis subsp. semipallida Lowell Ahart 1978-4-19 1655 Butte Along the edge of the Feather Falls trail, about 4 miles north of Feather Falls. 548 Comment
  CHSC117764  Perideridia bacigalupii L. P. Janeway 2016-8-11 12151 Butte Northern High Sierra Nevada. Plumas National Forest; at the junction of Ponderosa Way and Road 19N19; between Sunset Hill and South Fork Feather River arm of Lake Oroville. Moderate west-facing slope; mixed conifer forest but open canopy due to 2015 wildfire. 740 Comment
  CHSC40224  Perideridia bolanderi subsp. bolanderi Vernon Oswald 1985-6-20 1848 Butte Scotts John Rd., 0.6 mi n of 26N27, ca. 2.25 air miles e of Jonesville. 1755 Comment
  CHSC37133  Perideridia bolanderi subsp. involucrata L. Ahart 1982-7-1 3654 Butte Ca. 1 1/4 mi n and 2 1/2 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  CHSC102738  Perideridia kelloggii Lowell Ahart 2009-7-9 16028 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  CHSC40234  Perideridia lemmonii Vernon Oswald 1985-6-15 1836 Butte Black Bart Rd., ca. 1.5 mi se of Lumpkin Rd. 655 Comment
  UCD127957  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-15 4186 Butte north end of Snag Lake, Montane Meadow, east side of Humbug Road, around 14 miles northeast of Stirling City. 1737 Comment
  CHSC31763  Persicaria hydropiper L. Ahart 1977-9-20 1582 Butte Peter Ahart Ranch, Honcut, along edges of North Honcut Creek. 50 Comment
  CHSC76403  Persicaria hydropiper Lowell Ahart; Vernon H. Oswald 1999-10-3 8293 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
  JEPS120019  Persicaria hydropiper Lowell Ahart 2012-10-28 18522 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC413703  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CAS-BOT-BC418948  Persicaria lapathifolia Ira L. Wiggins 1928-9-9 3332 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC89487  Persicaria punctata R. D. Fischer 2004-8-22 439 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located approx. .75 mile down 10 Mile House Road from Hwy 32. On edge of pond at ex-old cabin site. 248 Comment
  CHSC92380  Persicaria punctata Lowell Ahart 2005-11-12 12489 Butte Bottom of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CHSC4644  Petrorhagia dubia R. Carter 1966-4-26 368 Butte Found ca. 10 mi. NE of Oroville on E side of Oroville-Quincy Rd., .3 mi. S of intersection with USFS road 21N40 to Bloomer Mt., growing 10 yds. off road. 609 Comment
  CHSC92540  Petrorhagia dubia L. P. Janeway; M. Brown, S. Mackey Hillaire, C. Christofferson 2005-5-2 8372 Butte Northern High Sierra Nevada. Plumas National Forest; south side near top of ridge trending southeast from Flea Mountain; 2.1 km southeast of top of Flea Mountain and +-overlooking Pulga. Along un-used dirt road under high power lines. 1067 Comment
  JEPS18179  Petrorhagia dubia Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5615 Butte 5.3 mi n Bangor (along road from Oroville to Bangor) 182 Comment
  RSA725056  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade range Foothills. East edge of city of Chico; NW side of Humbolt Road 2.4 km northeast of Bruce Road. 149 Comment
  SBBG115476  Petrorhagia dubia R. Molholm 1998-4-11 13 Butte upper Bidwell Park, ca. 1 km E of Horseshoe Lake, along rd that follows Chico Crk 104 Comment
  SEINET11933238  Petrorhagia dubia Unknown 1984-1 14 Butte ca 0.75 mi NE of Centinnial and Manzanita avenues 70 Comment
  CHSC38463  Phacelia cicutaria Vernon Oswald 1983-5-1 401 Butte Upper Bidwell Park, Chico, on the edge of the canyon rim overlooking Chico Creek ca. 400 ft w of Parking Area P which is located 2.0 mi e of the power lines. 198 Comment
  CHSC52402  Phacelia egena Stacy Scott 1981-4-14 Butte 1 km E of hwy 32 and Santos Way intersection on Santos Way, ca 11 km NNE of Chico. Comment
  UCD80360  Phacelia heterophylla subsp. virgata CNPS SN Foothill Team 2005-5-5 SNNR 0020 Butte City of Chico, Upper Bidwell Park. 202 Comment
  CHSC39102  Phacelia mutabilis R. A. Schlising 1981-7-3 4128 Butte N part of county, E of Philbrook Reservoir. 1828 Comment
  JEPS87202  Phacelia procera Lowell Ahart 1992-7-29 6879 Butte about 1 mi ne Carr Mine (about 3/4 mi nw of Lotts Lake, near cliffs) 1798 Comment
  CHSC31000  Phacelia purpusii M. S. Taylor; R. S. Schlising 1980-7-6 3064 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, on rocky open edge of Yellow Pine Forest. 1127 Comment
  CHSC93963  Phacelia purpusii R. D. Fischer 2004-6-20 760 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1371 Comment
  CHSC42352  Phacelia vallicola Lowell Ahart 1987-5-12 5627 Butte On dry bare broken black lava, south of Lumpkin Ridge Road, south of the dirt road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  NY61541  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte On the Feather River Highway a mile or two west of Arch Rock Tunnel Comment
  RSA0008811  Phaeostoma mildrediae A. A. Heller 1938-7-2 15153 Butte West of Arch Rock Tunnel on Feather River Hwy a mile or two west of Arch Rock Tunnel. Comment
  JEPS120579  Phalaris aquatica L. P. Janeway 2012-6-2 10841 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CAS-BOT-BC265846  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  SEINET10658625  Phalaris caroliniana A. Arthur Heller 1914-4-17 Heller 11307 Butte Hills 8 mi. North of Oroville Comment
  CHSC58290  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  UCD88990  Phalaris lemmonii H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 10 miles S of Oroville on Marysville Road. Comment
  CAS-BOT-BC265955  Phalaris minor Lowell Ahart 1974-6-6 s.n. Butte Peter Ahart Ranch, Honcut Comment
  CHSC115274  Philadelphus lewisii Lowell Ahart 2015-5-5 20144 Butte On the south side of the gravel road, Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito.Raparian Woodland (destroyed). 39 Comment
  CHSC64175  Philadelphus lewisii H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 863 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. Label says Lat. is 39 deg, 45', 78' N. Openings in forest. 880 Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  CHSC88088  Philadelphus lewisii R. D. Fischer 2004-4-17 173 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek next to 10 Mile House Road. 213 Comment
  UC880606  Phlox speciosa Helen M. Edwards Jun 1917 Butte De Sabla Comment
  RSA3434  Phlox speciosa subsp. occidentalis Helen M. Edwards 1917-06 s.n. Butte De Sabla. Comment
  CAS-BOT-BC134916  Phoradendron bolleanum John Thomas Howell 1962-6-15 37435 Butte Magalia. Sierra Nevada 731 Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  CHSC48608  Phoradendron densum Vernon Oswald 1982-11-14 16 Butte Coutolenc Rd. 300 ft n of its junction with the Skyway at Magalia. 707 Comment
  CAS-BOT-BC135130  Phoradendron juniperinum Clarence R. Quick 1962-8-19 62 -82 Butte Coyote Gap-Four Trees Road. Plumas National Forest 1463 Comment
  CHSC78908  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC101261  Phoradendron villosum Lowell Ahart 2009-4-17 15559 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  SEINET12276347  Phyla nodiflora Unknown 1905-1 s.n. Butte near Chico Comment
  SEINET10547000  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 Ahart 6725 Butte On the south end of the dam, at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC97260  Physalis lancifolia Lowell Ahart 2007-8-19 14494 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  UC580804  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  CAS-BOT-BC76938  Pilularia americana Lowell Ahart 1980-4-19 2092 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10470795  Pilularia americana Lowell Ahart 1983-5-12 Ahart 3969 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC4721  Pinus lambertiana R. Carter 1966-6-15 438 Butte 3/4 mi. S Brush Creek on Bald Rock Rd., growing 25' off W side of road. 1219 Comment
  CAS-BOT-BC78937  Pinus monticola Dr. E. B. Copeland 1929-7-17 331 Butte Above Jonesville 2000 Comment
  CHSC11775  Pinus monticola E. B. Copeland 1929-7-17 331 Butte Above Jonesville. 2000 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
  SFV10661  Pinus sabiniana M. L. Vincent 1964-4-9 529 Butte Paradise. Clark road, 1 mile south of Pearson Road. Comment
  CHSC54350  Piperia elongata Lowell Ahart 1991-5-31 6657 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
  CHSC84863  Piperia elongata L. P. Janeway; John Hunt 2003-6-5 7808 Butte Northern Sierra Nevada Foothills. Top of low west-trending ridge into Lake Oroville 350 m west-southwest of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake. 296 Comment
  JEPS106053  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  CAS-BOT-BC136586  Piperia michaelii Lowell Ahart 1980-5-12 2256 Butte Field redacted by CAS, contact the data manager for more information 50 Comment
  CHSC49680  Piperia transversa Vernon Oswald 1983-7-26 914 Butte Calif. Hwy 32, 6.2 mi n-e of Forest Ranch. 1036 Comment
  CHSC11777  Piperia unalascensis E. B. Copeland 1929-7-13 354 Butte Jonesville. 1500 Comment
  CAS-BOT-BC254406  Piptatherum miliaceum Lowell Ahart 1988-5-30 6016 Butte Near the N Fork of the Feather River, near the Poe Power House, about 2 miles SE of Jarbo Gap 274 Comment
  CHSC114686  Piptatherum miliaceum G. F. Hrusa; S. Dubiel 2012-9-9 18509 Butte Sierra Nevada. Banks of Feather River, 2 miles downstream from Thermalito afterbay. 30 Comment
  CHSC109182  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 17996 Butte On the south side of Vallombrosa Avenue, north side of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  SEINET10529826  Pityrogramma triangularis Mary Susan Taylor 1979-11-15 Taylor 2290 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10932922  Pityrogramma triangularis Mary Susan Taylor 1980-4-1 Taylor 2425 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET10932937  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-4-5 Taylor 3497 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  UCD80167  Plagiobothrys austiniae CNPS SN Foothill Team 2006-4-13 SNFN 0433 Butte CDFG Stone Ridge Ranch Wildlife Area, located in the upper middle portion of the Stone Ridge Ranch Wildlife Area, along the main creek running through the middle of the property (see map), about 150 m west of the power lines. 91 Comment
  SEINET10497366  Plagiobothrys austiniae Lowell Ahart 1984-4-6 Ahart 4544 Butte T22N R4E sec 31. Ca. 0.5 mi N of Kunkle Reservoir, ca. 2 miles S of Paradise, east side of Pentz-Magalia Hwy. Foothill Woodland; 600 m. 600 Comment
  CHSC10672  Plagiobothrys bracteatus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC50991  Plagiobothrys cusickii Lowell Ahart; Vern Oswald 1990-7-5 6550 c Butte In a small meadow, on the north side of Humboldt Road just west of Scout Road, Butte Meadows. 1325 Comment
  JEPS115303  Plagiobothrys fulvus Lowell Ahart 2009-4-17 15544 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  CHSC28996  Plagiobothrys fulvus var. campestris J. D. Jokerst 1980-3-12 473 Butte NE of Chico. 67 Comment
  POM197245  Plagiobothrys fulvus var. campestris H. F. Copeland 1929-4-5 1128 Butte Near Chico. Comment
  CHSC43468  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-30 1853 Butte About 1 mile northeast of the West Branch Bridge across Lake Oroville. In seeps and small streams. 365 Comment
  CDA34720  Plagiobothrys glyptocarpus var. glyptocarpus L. Ahart 2010-6-9 16785 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. 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
  CHSC26801  Plagiobothrys greenei M. S. Taylor 1978-4-14 1567 Butte In vernal pools, on e side of Williams Rd. ca. 1/4 mi n of Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  CHSC46781  Plagiobothrys greenei Lowell Ahart 1980-5-4 2175 Butte On the bottom of a small vernal pool and along small swales in a pasture, south-west of the intersection of Nelson Avenue and 20th. Street in Thermalito. 60 Comment
  JEPS121921  Plagiobothrys hispidulus Lowell Ahart 2014-7-10 19627 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC29034  Plagiobothrys nothofulvus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-6 547 Butte Top of North Table Mt, 200 m N of Cherokee Rd where it intersects the E end of the Mt. Comment
  SEINET10497553  Plagiobothrys nothofulvus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5239 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC112708  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2013-10-26 19208 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC77981  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte In the mudhole of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC103747  Plagiobothrys stipitatus var. stipitatus Lowell Ahart 2010-5-22 16709 Butte About 100 yards east of the fence, about 200 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 385 Comment
  CHSC31263  Plagiobothrys tenellus R. A. Schlising 1980-3-24 3525 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  HSC32646  Plagiobothrys tenellus David Johnson 1974-4-20 61 Butte Table Mtn. Comment
  RSA63834  Plagiobothrys tenellus A. A. Heller, H. E. Brown 1902-5-9 5509 Butte Berry Canyon (near Clear Creek) from type region Comment
  CAS-BOT-BC60824  Planodes virginica Lowell Ahart 1985-3-14 4846 Butte Peter Aharts Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 50 Comment
  CHSC28984  Plantago bigelovii R. A. Schlising 1980-3-23 3522 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  JEPS117270  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  SEINET10499802  Plantago coronopus Mary Susan Taylor 1975-4-18 Taylor 481 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  CHSC26726  Plantago elongata M. S. Taylor 1978-4-14 1550 Butte On e side of Williams Rd, ca. 1/4 mi n of Pentz Rd, on Butte College campus, ca. 15 mi s of Chico. 30 Comment
  JEPS104005  Plantago elongata Lowell Ahart 2003-4-8 10032 Butte On the high water line of a small vernal pool, ca 20 yd south of a faint poor dirt road, pasture field, ca 150 yd sw of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 348 Comment
  JEPS104322  Plantago elongata Lowell Ahart 2003-3-31 10027 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin Rd, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 43 Comment
  CHSC109132  Plantago erecta Lowell Ahart 2012-3-23 17778 Butte In a small meadow opening in brush, about 100 yards south of the intersection of Guardian Trail and Ten Miles House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 437 Comment
  CHSC12640  Plantago erecta M. S. Taylor 1974-4-20 183 Butte Richardson Springs, ca. 6 mi n of Chico, ca. 10 yds off side of road. Comment
  CHSC33394  Plantago erecta C. W. Dawson 1978-3-29 9 Butte 1.5 mi. s of Paradise and junction of Pearson Road and Clark Road (Hwy. 191). 800 ft. nnw of roadway at top of ridge. 335 Comment
  CHSC1222  Plantago lanceolata R. M. Staley 1952-7-5 Butte Paradise. 579 Comment
  CHSC1223  Plantago lanceolata M. Roberson 1956-5-14 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC94585  Plantago lanceolata Lowell Ahart 2006-9-13 13321 Butte South edge of the North Fork of the Feather River, about 50 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  JEPS95936  Plantago major Lowell Ahart 1999-8-13 8173 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
  CHSC113501  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC26857  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1645 Butte In Cherry Creek Meadow, on s side of Old Humbodt Rd, ca. 4 mi e of Butte Meadows. 1524 Comment
  SEINET12030014  Platanus racemosa Unknown 1984-1 4535 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut, on Peter Ahart Ranch 50 Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  UC128821  Pleuricospora fimbriolata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UCD92193  Poa Robert E. Preston 1982-3-20 191 Butte along Hwy. 70, ca. 0.6 mile west of Cresta Power House. 451 Comment
  CHSC47627  Poa annua Lowell Ahart 1974-3-12 317 Butte In garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC36422  Poa bulbosa Kirsten Tarp 1982-4-26 150 Butte 1 mi se of Cherokee, ca. 18 mi se of Chico. Roadside. 402 Comment
  SEINET10657875  Poa compressa Lowell Ahart 1989-5-28 Ahart 6286 Butte South of Oregon Gulch Road, about 0.5 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. Foothill Woodland. 1100 Comment
  CAS-BOT-BC236364  Poa secunda subsp. secunda Peter H. Raven 1954-4-17 6617 Butte 10 miles above Oroville on road to Pulga Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  CHSC92660  Poa secunda subsp. secunda L. P. Janeway 2005-5-29 8413 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. 1478 Comment
  UC762428  Pogogyne douglasii R. F. Hoover 1937-5-19 2243 Butte 10 mi. NW of Chico Comment
  CHSC44302  Pogogyne zizyphoroides Lowell Ahart 1988-5-12 5992 Butte About 1/2 mile north-east of the Honcut Cemetary, Josie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  SEINET13947033 Image available Pogogyne zizyphoroides Kitsy Kelly 1974-1 17 Butte Oroville Quadrangle, 300 yds S of the intersection of Pentz and Clark Rds; 200 ft alt., T21N, R3E, SEC27 61 Comment
  CHSC25341  Polanisia dodecandra subsp. trachysperma M Hayes 1977-7-3 21 Butte Dry, gravelly wash 2.0 km east of Highway 99 along Pentz Road. 80 Comment
  CHSC26745  Polanisia dodecandra subsp. trachysperma M. S. Taylor; M. Hayes 1977-8-16 1437 Butte Near culvert in natural drainage on s side of Pentz Rd, ca. 1.2 mi e of its jct with Hwy 99, ca. 15 mi s of Chico. 60 Comment
  UC1562380  Polanisia dodecandra subsp. trachysperma Lowell Ahart 1990-6-1 6504 Butte on s edge of Durham Highway about 3 mi e Durham (about 1 mi w of Highway 99) 60 Comment
  CHSC25467  Polemonium pulcherrimum Hayes; Warner 1977-9-11 87 Butte Near top of Humboldt Peak, ca. 2 km e of Humboldt Summit on Butte-Tehama County line. 2133 Comment
  CHSC48259  Polycarpon tetraphyllum Vernon Oswald 1988-5-8 3299 Butte Fernandez land grant. Oroville Wildlife Area at the Palm Ave. entrance. Near a pond. 30 Comment
  CDA13254  Polygala cornuta G. F. Hrusa, T. D. Wilfred 1996-7-8 13102 Butte Plumas National Forest; Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC38607  Polygala cornuta var. cornuta Vernon Oswald 1983-6-3 633 Butte Upper Bidwell Park, Chico, on the north rim overlooking Sycamore Creek Canyon 2000 ft w of the e end of the North Rim Trail. 390 Comment
  CHSC70809  Polygala cornuta var. cornuta B. Castro 1995-7-20 587 Butte Ca 2 air mi NW of Feather Falls, at western end of Watson Ridge, at W end of USFS Rd 21N25 along trail. 1005 Comment
  SEINET6647278 Image available Polygonum alpinum H. F. Copeland 1928-1 440 Butte neighborhood of Jonesville; Canyon of Jones Creek 1829 Comment
  JEPS88567  Polygonum amphibium var. emersum Vernon H. Oswald and Lowell Ahart 1996-5-27 7672 Butte U.S. Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (in a ditch between 7 Mile Lane and Tract 6, Sanctuary 2, just n of the equipment parking lot); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC46204  Polygonum aviculare L. P. Janeway 1986-10-19 1940 Butte Wet area along small creek feeding Thermalito Forebay from the NE. Between bay and hwy 99 and just N of the State Park picnic grounds. 67 Comment
  UC1192352  Polygonum aviculare subsp. aviculare Herbert L. Mason, Verne Grant 1946-9-3 13098 Butte 3 mi W of Colusa Comment
  CHSC38614  Polygonum bidwelliae Vernon Oswald 1983-5-7 444 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.9 mi e of the power lines. 304 Comment
  CHSC88076  Polygonum bidwelliae R. D. Fischer 2004-6-12 161 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on ridge above Humboldt Trail and just w. of Hwy 32. 399 Comment
  CAS-BOT-BC414371  Polygonum californicum A. A. Heller 1914-9-4 11763 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC414372  Polygonum californicum A. A. Heller 1914-9-4 11763 Butte Hills 8 miles north of Oroville Comment
  CHSC104852  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 393 Comment
  UC204385  Polygonum davisiae A. A. Heller 1914-8-7 11661 Butte summit back of Jonesville (n. slope just below crest of ridge) Comment
  RSA219113  Polygonum douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  UC1562373  Polygonum hydropiper Lowell Ahart 1990-6-16 6521 Butte along creek about 1/2 mi sw Enterprise Bridge across lake (below high-water line of lake); Lake Oroville, McCabe Creek 243 Comment
  JEPS121990  Polygonum minimum Lowell Ahart 2014-7-13 19654 Butte About 100 yards south of Philbrook Road, from the large meadow go west to the snow lake, go on about 100 yards to the open logged area, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC600495  Polygonum minimum H. F. Copeland 1928-7-18 1005 Butte near Butte Creek; Jonesville 1524 Comment
  CAS-BOT-BC419811  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 975 Comment
  CAS-BOT-BC419812  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC30947  Polygonum parryi L. Ahart 1980-7-4 2457 Butte In the tracks of a dirt rd near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  POM312540  Polygonum persicaria H. L. Mason, Verne Grant 1946-9-4 13111 Butte 833 Canal, W Gridley Road. Comment
  SEINET10479669  Polygonum persicaria Mary Susan Taylor 1975-10-3 Taylor 924 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  UC1586574  Polygonum phytolaccifolium Lowell Ahart 1991-8-25 6709 Butte along creek about 2 mi nw Four Trees (about 2 mi w of the Oroville-Quincy Hwy, about 2 mi e of Coyote Gap); Wildcat Creek 1219 Comment
  SEINET10479674  Polygonum punctatum Lowell Ahart 1990-10-3 Ahart 6620 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. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC44134  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally common in loose, gravelly soil on a scree slope somewhat below the n edge of the ridge. 2097 Comment
  SEINET10530417  Polypodium glycyrrhiza Mary Susan Taylor 1981-3-24 Taylor 3433 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  JEPS114970  Polypogon australis Lowell Ahart 2008-5-21 14778 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north 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
  CHSC42450  Polypogon interruptus Lowell Ahart 1987-5-27 5699 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
  RSA0118753  Polypogon interruptus Lowell A. 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. 30 Comment
  RSA715583  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET10508323  Polypogon interruptus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4110 Butte T21N R5E se/se sec 32. Ca. 1/8 mi e of jct of Oroville-Quincy Hwy & Ponderosa Way (Big Ridge Rd), ca. 15 mi ne of Oroville. Foothill Woodland. 500 Comment
  CHSC39324  Polypogon maritimus Lowell Ahart 1983-6-26 4158 Butte Along Ponderosa Way, about 2 1/2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 600 Comment
  JEPS127227  Polypogon maritimus Lowell Ahart 2016-5-30 20886 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC47635  Polypogon monspeliensis Lowell Ahart 1966-5-7 14 Butte In swales, 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
  CDA13502  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte Sierra Nevada; immediately above Sucker Creek. 1.5 miles SSE of Feather Falls. Comment
  CHSC44607  Polystichum imbricans Vernon Oswald 1982-11-14 15 Butte Near Doon Campground, ca. 1 mi e of Lovelock (Skyway between Paradise and Stirling City). 853 Comment
  CHSC116275  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-24 20583 Butte On the east side of Doe Mill Road, about a 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) noth of De Sabla Resevoir. 710 Comment
  JEPS124287  Polystichum imbricans subsp. curtum Lowell Ahart 2015-10-23 20582 Butte About 400 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 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
  CHSC41888  Populus tremuloides Lowell Ahart 1986-8-15 5384 Butte 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
  UC600407  Populus tremuloides H. F. Copeland 1930-7-26 Butte Jonesville Comment
  CHSC8772  Potamogeton diversifolius S. Chulasmai 1966-4-15 9 Butte Keefer Rd, up to northern Chico. Ditch. Comment
  CHSC50709  Potamogeton foliosus Lowell Ahart 1990-7-1 6533 Butte In a ditch on the east side of the road, at the Forbestown Generator, on the east side of the Forbestown Reservoir. 487 Comment
  CHSC46982  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-28 4022 Butte Richardson Springs in the foothills ne of Chico. In a pool in the bed of the East Branch of Mud Creek just above the falls. 213 Comment
  CHSC65473  Potamogeton foliosus var. foliosus Vernon Oswald 1987-4-30 2360 Butte Butte Creek Reserve on the s side of Butte Creek, ne of the Skyway. In a dredger pond. 80 Comment
  CHSC49686  Potamogeton gramineus Vernon Oswald 1987-6-9 2974 Butte Lily Pond 0.25 mi se of the benchmark on the s edge of Humbug Rd. between Butte Creek House and Snag Lake. 1813 Comment
  CHSC8765  Potamogeton pusillus var. tenuissimus S. Chulasmai 1966-5-20 44 Butte Horseshoe Lake. Comment
  CHSC46588  Potentilla drummondii V. Oswald; L. Ahart 1989-7-12 3855 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CDA13869  Potentilla glandulosa subsp. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-7 13727 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC46237  Potentilla gracilis Pauleen Broyles 1987-7-5 1073 A Butte Ca 7 km n of Inskip on Bull Hill Road where it crosses Coon Creek. Roadside. 1500 Comment
  CAS-BOT-BC158500  Potentilla millefolia H. F. Copeland 1931-6-11 s.n. Butte Jonesville, Butte Creek Meadows 1828 Comment
  CHSC50562  Poteridium annuum Vernon Oswald; Lowell Ahart 1990-7-5 4347 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  CHSC39550  Proboscidea louisianica Lowell Ahart 1983-7-10 4192 Butte On the bottom of a dry pond, in front of the large barn, near the two large barns, about 1 1/2 miles north-east of the intersection of Highway 99 and Pentz Road, about 14 1/2 miles north of Oroville. 70 Comment
  CAS-BOT-BC508632  Prosartes hookeri Lowell Ahart 1982-9-13 3810 Butte Near Pinkard Creek about 1/8 mile north of the Lost Creek Res. Dam about 2 and 1/8 miles north-west of Straberry Valley 1100 Comment
  CHSC44399  Prunella vulgaris Lowell Ahart 1988-6-28 6082 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  CHSC52219  Prunella vulgaris var. lanceolata L. P. Janeway 1988-7-2 2956 Butte Along rd to Coyote Gap 2.6 mi from bridge on French Creek. 982 Comment
  CHSC109092  Prunus Lowell Ahart 2012-4-20 17901 Butte On the south side of Guardian Trail, about 40 yards southwest of Pine Trail, about 1/4 mile west of Highway 32, about 8 1/2 miles northeast of Chico, south part of Upper Bidwell Park. 361 Comment
  CHSC48865  Prunus avium Vernon Oswald 1987-3-30 2303 Butte Dredger tailings on the w side of Hwy 99 ca. 0.5 mi nw of Butte Creek Bridge. On the edge of a pond. 65 Comment
  CHSC70838  Prunus cerasifera Vernon Oswald 1998-4-12 8902 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 441 Comment
  CAS-BOT-BC159923  Prunus emarginata H. F. Copeland 1920-8-29 160 Butte Jonesville wood 1219 Comment
  CHSC48867  Prunus emarginata Vernon Oswald 1984-6-11 1286 Butte Humboldt Rd., 2.3 mi n-e of its jct. with Rd. 26N27 to Humbug Summit (near the n-e corner of Butte County). 1920 Comment
  CHSC92535  Prunus emarginata L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8374 Butte Northern High Sierra Nevada. Plumas National Forest; on Sawmill Peak, 560 m east-southeast of the Lookout Tower; 2.4 km east of Magalia. Edge of old roadway. 966 Comment
  CAS-BOT-BC151221  Prunus virginiana var. demissa Lowell Ahart 1988-5-1 5980 Butte On the south side of Big Bend Road, about 1/2 mile south of Jarbo Gap 609 Comment
  CHSC35644  Pseudognaphalium luteoalbum R. E. Preston 1982-4-7 228 Butte On n bank of Western Canal, at jct with Aguas Frias Rd, ca. 12 mi s of Chico. 32 Comment
  CHSC76829  Pseudognaphalium luteoalbum L. P. Janeway 1999-11-15 6627 Butte Northern Sierra Nevada foothills. Along drainages below high water line of Lake Oroville, below Nelson Bar Road about 0.6 mi north-northwest of Lime Saddle. Ravines below forest. 274 Comment
  CAS-BOT-BC357237  Pseudognaphalium microcephalum A. A. Heller 1916-9-23 12659 Butte Sierra foothills near Forest Ranch Comment
  UC896905  Pseudognaphalium thermale A. A. Heller 1916-9-23 12659 Butte near Forest Ranch (Sierra foothills); Sierra Comment
  SEINET10530888  Pseudotsuga menziesii Mary Susan Taylor 1975-2-23 Taylor 388 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CHSC65894  Psilocarphus brevissimus var. brevissimus Vernon H. Oswald 1996-4-19 7391 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture near the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  UC1609224  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch Comment
  CHSC46965  Psilocarphus oregonus Lowell Ahart 1979-5-11 1869 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC361919  Psilocarphus tenellus Lowell Ahart 1989-5-23 6245 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  JEPS117508  Psilocarphus tenellus var. globiferus Lowell Ahart 2010-5-22 16722 Butte North of the road, about 100 yards west of the fence, about 1/4 mile east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 387 Comment
  CHSC87445  Psilocarphus tenellus var. tenellus R. D. Fischer 2004-4-3 79 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found on Guardian Trail, south of Pine Trail junction. 399 Comment
  UC1602323  Ptelea crenulata J. E. Sowder 1933-7-7 110 Butte Camel Mound; Chico Quad. 609 Comment
  CHSC28649  Pteridium aquilinum var. pubescens M. S. Taylor 1979-3-20 1945 Butte On n side of Hwy 70 following Feather River, begins at s side of bridge over n fork of Feather River, ca. 10 mi n of Oroville. 304 Comment
  JEPS110226  Pteridium aquilinum var. pubescens Lowell Ahart 2006-4-28 12545 Butte South of the dirt road and south of a small stream, a part of the drainage into Beatson Hollow, about 3/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 318 Comment
  SEINET10470591  Pteridium aquilinum var. pubescens Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4463 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  UC436292  Pterospora andromedea E. B. Copeland July, 1930 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
  CHSC54356  Pycnanthemum californicum L. P. Janeway 1989-5-19 Butte Vicinity of Sawmill Peak; along Jordan Hill Road ca 7 3/4 mi n of Concow Road. 944 Comment
  CHSC78245  Pyrola aphylla Lowell Ahart 2000-7-11 8573 Butte On the north side of a dirt road, about 100 yards north 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
  CAS-BOT-BC460580  Pyrola aphylla Lowell Ahart 1988-6-15 6043 Butte NW of the intersection of Black Bart Road and Forbestown Road, about 1 mi. W of Robinson Mill Road 670 Comment
  CHSC11803  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville. 1600 Comment
  CHSC71637  Pyrola dentata Vernon H. Oswald 1998-8-11 9461 Butte USFS 25N95 to Upper Wildcat Creek 0.3 mi north of Four Trees-Coyote Gap Rd. 1463 Comment
  UCR231087  Pyrola dentata Anna M. Hurlbutt 2009-8-7 019 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CDA13277  Pyrola picta G. F. Hrusa, T. D. Wilfred 1996-7-9 13125 Butte Plumas National Forest; N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  UCD162814  Quercus berberidifolia D. O. Burge 2015-3-16 1686 Butte Butte Creek watershed, below Doe Mill Ridge. 243 Comment
  CAS-BOT-BC62689  Quercus chrysolepis A. A. Heller 1918-5-5 13016 Butte Honey Run grade on a north slope Comment
  SEINET10477145  Quercus chrysolepis Mary Susan Taylor 1975-5-2 Taylor 549 Butte Ca. 1/4 mi W of Cohasset Road, ca. 21 mi NE of Chico; Yellow Pine Forest; with Calocedrus decurrens, Corylus cornuta, Pinus ponderosa. 1036 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
  CHSC23663  Quercus douglasii M. S. Taylor 1976-4-26 1079 Butte Ca. 500 ft s of Bidwell Park Rd, ca. 1 mi w of Chico Municipal Golf Course, Upper Bidwell Park, Chico. Comment
  RSA263856  Quercus garryana J. T. Howell 1955-6-15 30497 Butte 6 miles from Paradise on road to Pentz. 427 Comment
  UCR231085  Quercus kelloggii Anna M. Hurlbutt 2009-8-12 015 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  POM219009  Quercus vacciniifolia E. B. Copeland 626 Butte Jonesville. 1500 Comment
  SEINET13954081 Image available Quercus wislizeni A. S. Barclay, R. D. Barbee and K. E. Blum 1962-1 1345 Butte 19 mi E of Chico on road to Centerville 236 Comment
  CHSC38444  Quercus wislizeni var. wislizeni Vernon Oswald 1983-3-14 171 Butte Upper Bidwell Park, Chico, on the north rim at the head of the ravine at the Rifle Range. 182 Comment
  JEPS115105  Quercus wislizeni var. wislizeni Lowell Ahart, John Dittes 2008-11-14 15451 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC379113  Ranunculus aquatilis var. diffusus H. F. Copeland 1920-8-12 119 Butte in creek at Jonesville 1219 Comment
  CHSC44961  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 338 Butte Near Butte Meadows, on Bull Hill Rd., 0.2 mi from its jct with Humboldt Rd.; in stream. 1325 Comment
  CHSC1478  Ranunculus canus R. M. Staley 1952-7-5 Butte Paradise. 548 Comment
  CHSC61607  Ranunculus canus A. A. Heller; H. E. Brown 1902-5-3 5449 Butte Near Nelson. Comment
  CAS-BOT-BC378769  Ranunculus canus var. canus A. A. Heller 1914-4-29 11336 Butte low ground 12 miles north of Chico; moist shaded places near Pine Creek, 8 miles south of Vina Comment
  CDA34237  Ranunculus hebecarpus L. Ahart 2009-4-22 15592 Butte Along the Guardian s Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road. Approximately, 10 miles northeast of Chico. Comment
  CHSC45403  Ranunculus hebecarpus Lowell Ahart 1974-4-11 386 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  POM99252  Ranunculus hebecarpus C. C. Bruce 1897-05 1889 Butte Iron Canyon Comment
  SEINET10866504  Ranunculus occidentalis Mary Susan Taylor Taylor 996 Butte Bidwell Park, Chico. Comment
  SEINET215121  Ranunculus occidentalis var. eisenii K. Corson 1969-4-6 7 Butte 10 mi E of Chicao on CA Hwy 32 Comment
  CHSC46850  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 259 Butte S part of county, sw of Bangor, on Bangor Park Rd., roadside. 103 Comment
  JEPS98314  Ranunculus pusillus Lowell Ahart 2000-5-13 8356 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay S side of access road to boat ramp, W of Larkin Road, about 1 1/4 mi S of Oroville Airport) 42 Comment
  CHSC53980  Ranunculus sceleratus var. sceleratus Vernon H. Oswald 1991-4-21 4508 Butte Shippee Rd, 0.3 mi east of Hwy 99, between Hwy 149 and the Thermalito Afterbay. In ditch on the north side of the road. 50 Comment
  CHSC99568  Ranunculus uncinatus var. parviflorus L. P. Janeway 2008-6-22 9433 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  CHSC111394  Raphanus raphanistrum Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18013 Butte On disturbed soil, on the east side of the horse path, about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CHSC38031  Raphanus raphanistrum R. E. Preston 1982-11-5 362 Butte At roadside, n side of Cana Hwy, 100 yds e of Cana-Pine Creek Rd, Cana. 50 Comment
  CAS-BOT-BC59882  Rhamnus ilicifolia Lowell Ahart 1989-5-10 6211 Butte Near a dirt road, about 1/10 mi. nw. of the West Branch Bridge across Lake Oroville. 304 Comment
  CDA13885  Rhamnus ilicifolia G. F. Hrusa, T. D. Wilfred 1997-5-8 13743 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC1527  Rhamnus ilicifolia 1937-5-1 Butte Butte Creek. 91 Comment
  CHSC88070  Rhamnus ilicifolia R. D. Fischer 2004-6-6 156 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on Guardian Trail just south of the 10 Mile House Road junction. 420 Comment
  LA207835  Rhamnus ilicifolia A. A. Heller; 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra foothills Comment
  POM86208  Rhamnus ilicifolia C. C. Bruce 1897-05 1799 Butte Chico ion Humboldt road Comment
  CHSC92537  Rhamnus tomentella subsp. tomentella L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8375 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Concow Road 110 m north of the side road to top of Sawmill Peak; 970 m east of the Lookout Tower; 2.7 km east of Magalia. Ridgetop. 954 Comment
  RSA518944  Rhamnus tomentella subsp. tomentella J. T. Howell 1959-9-20 34701 Butte Feather River Hwy 5.9 miles below W Branch bridge. Comment
  UC2026886  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. Comment
  CHSC100418  Rhododendron occidentale L. P. Janeway; Heather Koeth 2008-11-17 9610 Butte Northern High Sierra Nevada. On the flats on the southwest side of Fall River at Nelsons Crossing (across from the mouth of Kenebeck Creek). 43 Comment
  CHSC37628  Rhus aromatica T. B. Devine 1979-8-12 593 Butte Forest Ranch Road, ca. 3 mi N of Forest Ranch, ca. 1/2 mi Nw of Hwy 32. Comment
  UCD116882  Rhus aromatica Joseph M. DiTomaso 1976-5-23 462 Butte Lake Oroville. Comment
  CHSC31431  Rhynchospora capitellata L. Ahart 1980-9-10 2618 Butte Seeps, near Bean Creek Rd, se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC95230  Rhynchospora capitellata L. P. Janeway 2006-7-21 8821 Butte Northern High Sierra Nevada. Upper part of meadow on northeast side of Flea Valley. 1.1 km west-northwest of Flea Mountain. 1140 Comment
  SBBG17304  Ribes bracteosum M. Vincent 1962-4-15 184 Butte The Skyway, 1 mi S of Stirling City Comment
  UC436293  Ribes nevadense E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  SEINET3118954 Image available Ribes nevadense E. B. Copeland 1931-1 647 Butte Jonesville, woods near Butte Creek 1550 Comment
  LA205496  Ribes roezlii E. B. Copeland; 1931-5-9 sn Butte Jonesville 1500.0 Comment
  CAS-BOT-BC198955  Ribes roezlii var. roezlii Carl B. Wolf 1941-7-23 11055 Butte Northern Sierra Nevada, on Chico-Lake Almanor Rd., Calif. Highway #32, approx. 5 mi. N Forest Ranch 914 Comment
  CAS-BOT-BC198961  Ribes roezlii var. roezlii A. A. Heller 1939-4-26 15384 Butte Edge of thickets near the river at the foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC198962  Ribes roezlii var. roezlii A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico Comment
  CAS-BOT-BC173955  Ribes viscosissimum F. N. Bassett 1923-6-16 s.n. Butte Jonesville Comment
  CHSC46696  Rigiopappus leptocladus R. A. Schlising; D. Ikeda, S. Morey 1986-5-24 4485 Butte S of Cohasset, along Cohasset Road. 426 Comment
  UCD135433  Rigiopappus leptocladus M. S. Taylor 1981-5-21 3770 Butte South side of Concow Road, ca. 0.5 mile south of its junction with Ponderosa Way, ca 20 air miles noth of Oroville. Comment
  CAS-BOT-BC74471  Rorippa curvisiliqua H. F. Copeland 1929-6-10 1203 Butte Jonesville. 1524 Comment
  RSA754942  Rorippa curvisiliqua L. Ahart 2008-5-8 14713 A Butte 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 air miles east of Oroville. 260 Comment
  CAS-BOT-BC74460  Rorippa curvisiliqua Lowell Ahart 1982-9-13 3814 Butte Near Pinkard Creek, about 1/8 mile north of the Lost Creek Reservori Dam, about 2 and 1/8 miles NW of Strawberry Valley. 1100 Comment
  CDA25120  Rorippa curvisiliqua T. C. Fuller 1959-7-6 Butte East of Highway 99E, 4.5 miles south of Oroville. 0 Comment
  UCD115309  Rorippa curvisiliqua R. E. Preston 1996-4-30 931 Butte 4.5 miles north of Hamilton City, on gravel bar on the east side of the Sacramento River. 44 Comment
  CHSC11077  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1970-4-20 Butte Earnist Bevan Farm, near Honcut. 45 Comment
  JEPS113534  Rosa Lowell Ahart 2007-6-12 14067 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville 893 Comment
  CHSC108312  Rosa californica Lowell Ahart 2011-8-17 17622 Butte On the east side of Big Chico Creek, about 40 yards west of Ten Mile House Road, about 3/4 mile (air) northeast of Chico. 197 Comment
  CHSC113804  Rosa californica M. Ocken 2011-4-25 Butte Honeyrun Rd North side. Found along roadside at base of a slope. Roadside next to riparian. 96 Comment
  CAS-BOT-BC148105  Rosa gymnocarpa Lowell Ahart 1982-9-13 3822 Butte Along the dirt road which is along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC28419  Rosa gymnocarpa M. S. Taylor 1979-10-5 2225 Butte Paradise Lake, se side, ca. 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC30739  Rosa gymnocarpa M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  SEINET10483517  Rosa gymnocarpa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4464 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  JEPS115693  Rosa pisocarpa Lowell Ahart 2009-5-30 15800 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  JEPS115699  Rosa pisocarpa Lowell Ahart 2009-11-19 16542 Butte 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
  JEPS94329  Rosa pisocarpa subsp. ahartii Lowell Ahart 1997-8-1 7797 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on the bottom of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  POM253366  Rosa pisocarpa subsp. ahartii A. A. Heller 1938-7-20 15283 Butte Upper end of Lake Snag, 7 miles east of Chaparral 1524 Comment
  UC1926781 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC43211  Rosa pisocarpa subsp. pisocarpa L. P. Janeway 1987-6-26 2287 Butte At Rag Dump. At mdw edge. 1173 Comment
  CHSC31887  Rotala ramosior L. Ahart 1975-7-5 850 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek on mud. 45 Comment
  CHSC76419  Rotala ramosior Lowell Ahart 1999-10-28 8305 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS127015  Rubus armeniacus Lowell Ahart 2016-5-24 20867 Butte About 100 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC147105  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CHSC38651  Rubus laciniatus Vernon Oswald 1983-6-3 622 Butte Upper Bidwell Park, Chico, on the s bank of Lindo Channel ca. 400 ft w of Chico Creek. 79 Comment
  JEPS115363  Rubus laciniatus Lowell Ahart 2009-7-9 16013 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 181 Comment
  SEINET10483577  Rubus laciniatus Mary Susan Taylor 1980-5-27 Taylor 2649 A Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC147200  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CHSC1601  Rubus parviflorus R. Carter 1964-5-16 95 Butte Feather R. Canyon, 1/4 mi. up S side of Bear Creek from Hwy. 40A. 640 Comment
  CHSC46046  Rubus parviflorus L. P. Janeway 1987-5-10 2051 Butte At edge of bridge over West Branch Feather River ca 6 mi from Stirling City. 754 Comment
  CHSC44231  Rubus pensilvanicus Vernon Oswald 1988-6-30 3541 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. 1146 Comment
  SEINET10483614  Rubus vitifolius Mary Susan Taylor 1976-3-16 Taylor 1027 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CHSC98949  Rumex acetosella Lowell Ahart 2008-5-8 14726 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 264 Comment
  RSA781352  Rumex acetosella Anna Kostikova, Glenn Litsios, Sarah Burgy 2010-7-1 152 Butte Bidwell park, parking slot, northern entrance, from hwy 32. Comment
  CAS-BOT-BC421910  Rumex acetosella John Thomas Howell 1962-6-15 37477 Butte Magalia 731 Comment
  CDA29951  Rumex conglomeratus L. Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico Comment
  CHSC115154  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC45955  Rumex crispus Lowell Ahart 1976-6-27 1149 Butte Along the edge 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
  CAS-BOT-BC421614  Rumex crispus John Thomas Howell 1962-6-15 37476 Butte Magalia 731 Comment
  SEINET10479778  Rumex obtusifolius subsp. agrestis Mary Susan Taylor 1982-8-16 Taylor 4987 A Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CHSC33276  Rupertia hallii R. A. Schlising; R. Banchero 1981-6-16 4087 Butte NE of Cohasset. 1109 Comment
  SEINET10537602  Sagina apetala Lowell Ahart 1983-5-12 Ahart 3973 Butte Along the power line, ca. 0.5 mi ne of jct of Hwy 99 and Pentz Rd, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC113340  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  CHSC116717  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-5-24 20859 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) notheast of Honcut. 44 Comment
  CHSC33283  Sagina saginoides R. A. Schlising 1981-6-29 4123 Butte E of Inskip at Ramsey Bar of Little Kimshew Creek. 1341 Comment
  UC1586512  Sagittaria latifolia Vernon H. Oswald and Lowell Ahart 1991-8-28 4855 Butte gravel road 0.5 mi s of Richvale East Rd. 0.25 mi w of Hwy 99 and the Thermalito Afterbay (on the n boundary of the Richvale Vernal Pools); n boundary of the Richvale Vernal Pools 33 Comment
  CAS-BOT-BC445799  Sagittaria montevidensis Lowell Ahart 1987-10-20 5918 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
  CHSC43287  Sagittaria montevidensis subsp. calycina Lowell Ahart 1987-10-20 5918 Butte Rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10905440  Sagittaria montevidensis subsp. calycina Mary Susan Taylor 1978-7-22 Taylor 1852 A Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  JEPS102545  Salix babylonica Vernon H. Oswald 2001-4-4 9994 Butte Palm Ave entrance to the Oroville Wildlife Area. 27 Comment
  CDA9267  Salix exigua D. G. Kelch 2006-8-2 6 .346 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  RSA0045618  Salix exigua var. hindsiana Lowell A. Ahart 2012-4-9 17828 Butte 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. 111 Comment
  CAS-BOT-BC107837  Salix gooddingii C. R. Ball 1916-6-15 2069 Butte On bank of Chico Creek, Chico Comment
  HSC102781  Salix gooddingii L. Ahart 2012-4-20 17893 Butte About 9 air miles NE of Chico, ~0.6 mi. west of Hwy. 32; ~100 yds. south of the intersection of South Rim Trail and Ten Mile House Road, ~50 yds. SW of table at old homestead; on east side of dam, east of South Rim Trail. 259 Comment
  HSC103912  Salix gooddingii L. Ahart 2012-4-3 17803 Butte About 12 mi. SE of Oroville; Peter Ahart Ranch: ~1.25 mi. N and 2.75 mi. E of Honcut; north bank of North Honcut Creek 39 Comment
  JEPS119845  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southeast of intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC9694  Salix laevigata E. L. Smith 1971-9-12 1066 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  JEPS115187  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CHSC40542  Salix lasiolepis J. D. Jokerst; L. Ahart 1984-3-20 1947 Butte Along the edge of Black Bart Rd. 0.5 miles S of its junction with Forbestown Rd. Comment
  SBBG126081  Salix lasiolepis L. Ahart 2012-3-9 17773 -A Butte middle of N Honcut Crk, 30 yards E of floodgate, Peter Ahart Ranch, ca 1 mi N and 2.5 mi E of Honcut 39 Comment
  UCR237325  Salix lasiolepis George K. Helmkamp, E. A. Helmkamp 2012-4-14 18746 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction of East Gridley Road and CA-70 23 Comment
  CAS-BOT-BC129583  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  SD931  Salix ligulifolia E. B. Copeland 1931-6-9 621 Butte Jonesville, in meadow near the head of North Willow Creek 1550 Comment
  LA208870  Salix melanopsis E. B. Copeland; 1931-6-10 sn Butte by Butte Creek; Jonesville 1500.0 Comment
  UC456788  Salix melanopsis E. B. Copeland 1931-5-8 Butte Sandy Gulch Chico; Hooker Oak Ford, Sandy Gulch Comment
  JEPS116659  Salpichroa origanifolia L. P. Janeway 2010-5-12 9975 Butte Chico Chico (north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between the creek and Humboldt Road); Sacramento Valley 63 Comment
  RSA123292  Salvia sonomensis A. E. Wieslander, J. E. Sowder 1933-6-24 326 Butte Keefer Ridge. 305 Comment
  SEINET12319553  Salvia sonomensis S. R. Johnson 1978-1 18 Butte Ca 22km N of Chico, ca 5km S of Cohasset 590 Comment
  JEPS96095  Sambucus mexicana Vernon H. Oswald and Lowell Ahart 1996-6-10 7742 .1 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (bank of river at n end of Riparian Sanctuary); Sacramento River National Wildlife Refuge 28 Comment
  CAS-BOT-BC235067  Sambucus racemosa var. racemosa E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 2100 Comment
  JEPS98470  Sanguisorba annua Lowell Ahart 2000-6-29 8544 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  JEPS103400  Sanicula Lowell Ahart 2002-6-21 9733 Butte On the sides of a poor dirt road, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  SEINET12121437  Sanicula bipinnata R. S. Mitzel 1982-1 3 Butte ca 50 yds S of Horseshoe Lake in Upper Bidwell Park, 3 mi NE of Chico 61 Comment
  CHSC108811  Sanicula bipinnatifida Lowell Ahart 2012-4-9 17826 Butte About 20 yards southeast of Big Chico Creek, on the northwest side of South Rim Trail, south part of Upper Bidwell Park, about 3/4 mile east of the power lines, about 1 3/4 miles (air) northeast of Chico. 96 Comment
  POM82753  Sanicula bipinnatifida C. C. Bruce 1897-05 2057 Butte Little Chico Comment
  HSC32653  Sanicula bipinnatifida Patricia Datzman 1974-4-20 22 Butte Cherokee Mtn. Rd., 2 mi. S of Cherokee Comment
  CHSC65441  Sanicula tuberosa L. P. Janeway 1995-5-18 4763 Butte Jackson Ranch Ridge, between Fall River and Frey Creek. 1106 Comment
  CHSC99591  Sanicula tuberosa R. A. Schlising 2008-6-25 4469 Butte East of Jonesville, along road crossing to Humbug Summit Road, in small meadow 0.25 mi east of turnoff to Scotts John Creek. 1746 Comment
  SEINET3240023  Santalaceae R. L. Mathiasen 2010-1 1038 Butte Humboldt Summit; 2020 Comment
  UC478456  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  POM92827  Saxifraga californica C. C. Bruce 1897-1 2043 Butte Little Chico Comment
  POM196050  Saxifraga oregana H. F. Copeland 1929-06 1240 Butte Jonesville. 1524 Comment
  CHSC30003  Scandix pecten-veneris Harritta Gaussoin 1980-4-22 17 Butte SW jct. of Boyles Rd. and Highway 99 N, ca. 13 miles N of Chico. 60 Comment
  CHSC33660  Sceptridium multifidum R. A. Schlising; K. Tarp 1981-7-28 4170 Butte N of Inskip in NE part of county, near junction of creek from Coon Hollow and West Branch of North Fork of Feather River. 1328 Comment
  UCD126470  Schedonorus arundinaceus Leonard 1919-1 X 3095 Butte Chico. Comment
  CDA4987  Schinus molle G. Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills; Between the road to the Oroville Dam substation and the Thermalito Diversion Pool; about 1100 feet southwest of the base of Oroville Dam. Comment
  CHSC38912  Schoenoplectus acutus var. occidentalis Vernon Oswald 1983-5-23 540 Butte Upper Bidwell Park, Chico, between the turn-around at the end of Upper Park Rd. and the east boundary of the park. 207 Comment
  CHSC58284  Schoenoplectus mucronatus Lowell Ahart 1992-5-23 6773 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  NY51637  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  SD116544  Scirpus tuberosus Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Groville and Marysville, stream through Valley Grassland and grainfield. On moist clay. Dry rocky stream bed. 29 Comment
  CHSC28682  Scribneria bolanderi M. S. Taylor 1979-5-6 1996 A Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC6076  Scribneria bolanderi B. Wilson 1968-4-19 177 Butte 2 mi s of Cherokee on Table Mountain. Comment
  CHSC6093  Scribneria bolanderi A. R. Jaegel 1968-4-10 101 Butte W side of Cherokee Rd. and 1 mi s of Oregon City Rd. Comment
  JEPS117411  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC4078  Scrophularia californica subsp. floribunda J. E. Bowlin 1967-4-16 25 Butte Few plants in field, ca. 1/4 mile after you turn off 99, going s from Chico turn left on the first dirt road past Butte Creek Bridge and 99, Chico. 59 Comment
  SEINET10548953  Scrophularia californica subsp. floribunda Lowell Ahart 1990-10-21 Ahart 6634 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. Foothill Woodland (destroyed). 244 Comment
  CHSC93861  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
  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
  JEPS98476  Scutellaria californica Lowell Ahart 2000-5-31 8412 Butte 3 mi SE of Paradise (E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 304 Comment
  POM70088  Scutellaria californica Edward Palmer 1892-6-7 2054 Butte Near Chico. Comment
  JEPS115658  Scutellaria siphocampyloides Lowell Ahart 2009-5-30 15808 Butte On the southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 436 Comment
  RSA755770  Scutellaria siphocampyloides L. Ahart 2009-5-30 15808 Butte Southeast side of Guardians Trail, about 10 yards south of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 437 Comment
  CHSC52203  Scutellaria tuberosa L. P. Janeway 1988-5-19 2669 Butte Along Cohasset Rd near the Anderson Mill site; near the county line. 1133 Comment
  CHSC85403  Scutellaria tuberosa John Dittes; Josephine Guardino 1992-5-7 481 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  CHSC94028  Scutellaria tuberosa R. D. Fischer 2005-4-9 732 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on a shady roadside bank, with shrubs and chaparral of ridge top. 487 Comment
  SEINET8249655  Sedella pumila A. Heller 1926-4-19 13923 Butte Along Chico-Oroville road, about 7 miles from Chico. Comment
  UCD102081  Sedum spathulifolium P. Thompson 1996-4-26 35 Butte Highway 70. Belden. Along the north entrance of the Pacific Crest Trail. 304 Comment
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Apr 5 2013
  SEINET12215663  Sedum spathulifolium Unknown 1977-1 20 Butte ca 20 M S of Big Chico Creek, 6 km ne of Chico. Richardson Springs Quadrangle. 7.5' N. central 100 Comment
  JEPS113219  Selaginella hansenii Lowell Ahart 2007-2-24 13583 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  SEINET10530445  Selaginella wallacei Mary Susan Taylor 1980-5-27 Taylor 2666 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
  SEINET10874645  Selaginella wallacei Mary Susan Taylor 1980-4-6 Taylor 2439 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
  CAS-BOT-BC363286  Senecio aronicoides E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  CDA13874  Senecio eurycephalus var. lewisrosei G. F. Hrusa, T. D. Wilfred 1997-5-7 13732 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC113948  Senecio sylvaticus Lowell Ahart 2014-8-13 19706 Butte 10 yards east of the east edge of a large wet meadow (some bog), about 120 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC84011  Senecio sylvaticus Lowell Ahart 2003-6-23 10308 Butte In a field, Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  RSA0060801  Senecio sylvaticus Lowell A. Ahart 2012-4-9 17843 Butte High east cliff edge of Big Chico Creek, about 20 yards west of South Rim Trail, south part of Upper Bidwell Park, about 2.5 miles (air) northeast of Chico. 206 Comment
  CAS-BOT-BC364270  Senecio triangularis Lowell Ahart 1985-7-9 5117 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls 914 Comment
  CHSC19942  Senecio vulgaris M. S. Taylor 1975-3-26 428 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC42456  Senecio vulgaris Lowell Ahart 1987-3-20 5482 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
  CAS-BOT-BC364550  Senecio vulgaris Lowell Ahart 1987-3-20 5482 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville 67 Comment
  SEINET10904979  Senecio vulgaris Mary Susan Taylor 1973-1 Taylor 41 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10938099  Senecio vulgaris Mary Susan Taylor 1982-4-28 Taylor 4354 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
  CAS-BOT-BC240121  Setaria pumila John Thomas Howell 1961-9-22 36735 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC240122  Setaria pumila John Thomas Howell 1959-9-20 34680 Butte Eastern outskirts of Oroville 60 Comment
  CHSC2186  Setaria pumila D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CHSC47640  Setaria pumila Lowell Ahart 1975-6-23 801 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. 42 Comment
  UCD92705  Setaria pumila Beecher Crampton 1957-9-17 4617 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  UCD92713  Setaria pumila L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  JEPS119849  Setaria pumila subsp. pumila Lowell Ahart 2012-6-28 18229 Butte On the entrance to Lower Bidwell Park, north of Woodland Avenue, Chico. 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
  JEPS127019  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 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. Comment
  CHSC13724  Sidalcea calycosa J. G. Moore 1969-4-13 141 Butte Stilson Canyon Rd., 1.4 mi. se of jct. with Bruce Rd., Chico. Comment
  CHSC29724  Sidalcea calycosa J. D. Jokerst; T. B. Devine 1979-7-6 405 A Butte Top of North Table Mt, ca 100 m NW of the jct of the E edge of Table Mt and Cherokee Rd. Comment
  CHSC89485  Sidalcea calycosa subsp. calycosa R. D. Fischer 2004-6-6 444 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at junction of Guardian Trail and Pine Trail. At edge of small seep. 396 Comment
  UC764088  Sidalcea calycosa subsp. calycosa R. F. Hoover 1936-5-21 1164 Butte 7 mi n Chico; n of Chico Comment
  JEPS97960  Sidalcea diploscypha K. Andreasen 1998-6-30 277 Butte SW side of pond at end of Long Bar Rd., S side of Thermalito Diversion Pool Lake Lake Oroville State Recreation Area Comment
  UC108881  Sidalcea diploscypha K. Brandegee May 1883 Butte Comment
  CHSC82967  Sidalcea gigantea L. P. Janeway; B. Castro 2002-8-11 7696 Butte Northern High Sierra Nevada. Along Four Trees Road 0.6 km north of Coyote Gap; uppermost southeastern fork of Mill Creek. At drainage though not immediately adjacent to the water; roadside. 1341 Comment
  CHSC34956  Sidalcea glaucescens R. Schlising; R. Banchero 1980-7-14 3906 Butte North part of county, 0.4 mi N of Snag Lake. Comment
  CHSC2830  Sidalcea hartwegii David Prall 1965-3-28 17 Butte In a field east of Meridian Rd, 8 miles NE of HW. 99E north of Chico. Comment
  UC725875  Sidalcea hartwegii A. A. Heller 1926-4-28 13934 Butte near Little Chico Creek; near Little Chico Creek Comment
  SEINET10480002  Sidalcea hartwegii Mary Susan Taylor 1974-4-30 Taylor 200 Butte Along Cohasset Road, NE of Chico. Comment
  CHSC34950  Sidalcea oregana subsp. spicata R. A. Schlising; M. S. Taylor 1980-7-5 3835 Butte NE of Butte Meadows at first crossing of Butte Creek on Humboldt Road. 1341 Comment
  NY222070  Sidalcea robusta A. A. Heller 1915-5-17 11879 Butte Volcanic uplands along Chico creek 5 miles east of Chico in the Quercus douglasii belt Comment
  CHSC43400  Silene antirrhina Lowell Ahart 1979-5-29 1901 Butte About 1/4 mile east of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 487 Comment
  UCR179390  Silene californica Ann C. Myers 1976-4-25 42 Butte 20 miles north of Oroville County Road B-1 on Fether Falls Trail, 1.5 miles from trailhead 610 Comment
  CHSC99664  Silene gallica H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM10 610006E 4406721N. 471 Comment
  CHSC81483  Silene laciniata subsp. californica Julie Rose 2000-4-25 90 Butte 6.8 miles on Hwy 32 East to Green Gate. About a quarter mile down the trail. 365 Comment
  CHSC35041  Silene lemmonii R. A. Schlising; M. S. Taylor 1980-7-5 3837 Butte N part of county, at first crossing of Butte Creek on Humboldt Road N of Butte Meadows. On bank near creek. 1341 Comment
  CHSC31598  Silybum marianum L. Ahart 1975-6-5 786 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46348  Sisymbrium officinale Lowell Ahart 1989-5-23 6247 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  UC725582  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte upper end of Snag Lake (7 mi e of Chaparral, along stream) 1524 Comment
  UC600466  Smilacina racemosa E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  SEINET10905129  Smilacina racemosa Mary Susan Taylor 1981-5-21 Taylor 3783 Butte T23N R5E south central border sec 8, Pulga SW quad. Jct of Camp Creek and Rd 23N10, ca. 4 mi N of Pulga on Feather River Hwy 70. Granite soils; Yellow Pine Forest; 3300 ft. 1006 Comment
  POM197247  Smilax californica H. F. Copeland 1929-5-4 1125 Butte Canyon of Chico Creek. Comment
  SBBG120027  Solanum americanum L. Ahart 2006-9-11 13296 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  SEINET10546504  Solanum nodiflorum Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5225 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
  CHSC32733  Solanum parishii M. S. Taylor 1981-4-8 3502 Butte W side of Dark Canyon Rd, ca. 3 mi s of its jct with Big Bend Rds jct, ca. 4 air mi s of Jarbo Gap on Hwy 70. 365 Comment
  POM69612  Solanum umbelliferum R. M. Austin 1876-07 s.n. Butte American Valley. Comment
  SEINET12321224  Solanum umbelliferum Unknown 1890-1 s.n. Butte no further locality Comment
  CHSC101157  Soliva sessilis Lowell Ahart 2009-5-15 15694 Butte In the center of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC102501  Sonchus oleraceus Lowell Ahart 2009-5-30 15791 Butte By a small rock about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC103987  Sonchus oleraceus Lowell Ahart 2010-5-14 16671 Butte On the south side of a trail, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32. Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 260 Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  CHSC37123  Sorbus scopulina L. Ahart 1982-9-13 3824 Butte Along a stream, near dirt rd by Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC22890  Sorghum halepense Robert A. Schlising 1974-10-6 3160 Butte Along Sacramento River in field about .5 mi s of jct Sacramento Road and River Road, along latter. Comment
  CHSC43806  Sparganium emersum subsp. emersum Vernon Oswald; Lowell Ahart 1987-7-1 3073 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. In the largest lake. 1935 Comment
  JEPS98351  Spergula arvensis subsp. arvensis Lowell Ahart 2000-5-23 8388 Butte 4 mi NE of Honcut (100 yds SE of the barn, about 1/4 mi NE of Honcut Cemetery) 54 Comment
  CHSC34997  Spergularia bocconi R. Schlising; R. Banchero 1981-4-17 4034 Butte NW of Oroville, along Cottonwood Road, 0.4 mi E of junction with Hwy 99. Roadside. 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
  UC2026894  Spiraea Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17868 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC45808  Spiraea densiflora subsp. splendens L. P. Janeway; R. A. Schlising 1988-7-22 3045 A Butte Near the saddle between Coon Hollow and Chips Cr. 1889 Comment
  SBBG128718  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  UC600631  Spiranthes romanzoffiana H. F. Copeland 1930-7-27 Butte Blueberry Meadow Jonesville Comment
  SEINET10938417  Spiranthes romanzoffiana Mary Susan Taylor 1978-1 Butte Comment
  UC600632  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC42982  Stachys ajugoides var. rigida L. P. Janeway 1987-6-26 2253 Butte South Fork Feather R at crossing of the road from Lumpkin Ridge to Moorville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. On the S side of the river; a bench area. 975 Comment
  CHSC87566  Stachys ajugoides var. rigida R. D. Fischer 2004-4-20 147 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along 10 Mile House Road about 1/8 mile below junction of Guardian Trail. 396 Comment
  RSA0109093  Stachys pycnantha L. Ahart 2006-9-11 13286 Butte South edge of the North Fork of the Feather River, north side of Highway 760, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  SD60318  Stachys stricta A. A. Heller 1928-7-14 14684 Butte Butte Meadows on a tributary of Butte Creek. Comment
  UC179507  Stebbinsoseris heterocarpa A. A. Heller 1914-4-13 11282 Butte 8 mi north of Oroville. Comment
  SEINET10833472  Stellaria jamesiana Mary Susan Taylor 1978-7-19 Taylor 1753 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  UC135756  Stellaria media Mrs. R. M. Austin May 1896 293 Butte Chico plains; Chico Comment
  CAS-BOT-BC395114  Stellaria nitens Lowell Ahart 1980-3-26 2069 Butte Near Hurleton 600 Comment
  UC1609205  Stellaria nitens Vernon H. Oswald and Lowell Ahart 1993-3-24 5235 Butte 2 mi n Pentz Road (n of historical site of Pentz, e side of Dry Creek Canyon, on the e side of a secondary drainage entering Dry Creek); Dry Creek Canyon 243 Comment
  JEPS87165  Stellaria obtusa Lowell Ahart 1992-7-21 6817 Butte about 2 air mi ne Philbrook Reservoir (on s side of Coon Hollow, nw of a snow lake); Coon Hollow 1737 Comment
  UC1564733  Stellaria umbellata V. Oswald and L. Ahart 1989-7-21 3876 Butte ca 0.7 air mi se Summit Lake (ca 4.5 air mi se of Jonesville, sw branch of upper Butte Creek); Butte Creek 1828 Comment
  CHSC40007  Stephanomeria lactucina Lowell Ahart 1983-8-16 4307 Butte Along the banks of a small wash, near a small mountain meadow, near Bull Hill Road, about 3 1/2 miles south of Butte Meadows. 1600 Comment
  CHSC116153  Stephanomeria paniculata Lowell Ahart 2015-11-7 20623 Butte On the west 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
  UC1745626  Stephanomeria virgata subsp. pleurocarpa Annetta M. Carter 1945-9-30 1733 Butte Feather River highway above Oroville.; ; Feather River highway above Oroville. Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610