Search Results — 2000 specimen records retrieved (1621 records with coordinates)
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC29103  Acer circinatum M. S. Taylor; J. D. Jokerst 1980-4-27 2557 Butte Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1 1/2 mi se of Nimshew. 609 Comment
  NY43528  Acer circinatum S. Bianco 1995-9-17 1026 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  SEINET10973037  Acer circinatum Mary Susan Taylor 1979-10-5 Taylor 2224 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  POM193371  Acer glabrum var. torreyi E. B. Copeland 1930-6-28 423 Butte Jonesville. 2100 Comment
  CAS-BOT-BC21701  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC210629  Achnatherum lemmonii Lowell Ahart 1983-6-21 4087 Butte Along Bloomer Hill Road, ca. 1.25 mi. W of the Oroville Quincy Highway, ca. 15 mi. NE of Oroville 450 Comment
  CHSC109860  Achnatherum lemmonii L. P. Janeway 2012-6-7 10857 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
  CAS-BOT-BC216465  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit 2154 Comment
  JEPS94313  Achnatherum occidentale subsp. occidentale Lowell Ahart 1997-8-1 7790 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, e of Little Kimshew Creek, e of Snow Meadow) 1524 Comment
  UCSB63843  Achnatherum occidentale subsp. pubescens Ahart, Lowell 1997-8-1 Butte E of Little Kimshew Creek, E of Snow Meadow, ca. 1/4 mi E of table Mtn., ca. 8 mi by air NE of Stirling City. T25N, R5E, Section 33. 1524 Comment
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Jun 8 2012
  JEPS118485  Achnatherum stillmanii Lowell Ahart 2011-7-9 17568 Butte North of a large open bare granite area, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 975 Comment
  UC891062  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 mi n of Oroville Comment
  SEINET11838910  Achyrachaena mollis Unknown 1978-1 13 Butte Small population ca 2 mi N of Chico on State Hwy. 99 67 Comment
  CHSC96998  Acmispon argophyllus var. fremontii L. P. Janeway 2007-6-19 9065 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  JEPS119604  Acmispon brachycarpus Lowell Ahart 2012-4-9 17845 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
  CHSC26791  Acmispon parviflorus M. S. Taylor 1978-5-6 1588 Butte Along trail, Magalia. 609 Comment
  CHSC100947  Aconogonon davisiae R. A. Schlising; Lawrence Janeway 1988-7-1 4552 Butte End of road on Snow Mt., above Summit Lake. 2011 Comment
  SD1178  Aconogonon davisiae E. B. Copeland 1931-6-19 629 Butte Jonesville, at the Summit, in sandy gravelly patches 2100 Comment
  CHSC40409  Aconogonon phytolaccifolium Lowell Ahart 1985-7-9 5118 Butte Along Fall River, about 100 yards south of the bridge across Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. 914 Comment
  CAS-BOT-BC29852  Adenocaulon bicolor A. A. Heller 1917-7-26 12830 Butte Butte Meadows 1280 Comment
  CHSC39801  Adiantum capillus-veneris Ruby Gist 1935-3-1 Butte Fern Banks. 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
  SEINET11715826  Adiantum jordanii D. J. Straub 1977-1 5 Butte ca 50 ft S of Big Chico Creek and 5050 ft E of Hooker Oak pool, 1 mi E of Chico 91 Comment
  CDA36799  Aegilops triuncialis D. B. Joley, S. O. Mattoon 1972-5-24 PDR# 33065 Butte Hwy 32, ca. 2 miles southwest of Forest Ranch, ca. 12 miles north of Chico. 0 Comment
  CHSC107396  Aesculus californica Blake McSorley 2010-4-13 Butte Bidwell Park at Green Gate. 469 Comment
  CHSC678  Aesculus californica A. Goekler 1928-5-25 Butte Bidwell Park, Chico. 152 Comment
  JEPS115572  Aesculus californica Lowell Ahart 2009-5-23 15765 Butte South of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  POM85637  Aesculus californica Mrs. R. M. Austin 1899-05 s.n. Butte Dead Mans Grade. Comment
  SEINET10494492  Aesculus californica Lowell Ahart 1985-6-17 Ahart 5045 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC33946  Ageratina occidentalis M. S. Taylor; L. Ahart 1981-8-16 4206 Butte N side of 25N04, near upper Big Kemshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. 1950 Comment
  UC600719  Agoseris aurantiaca var. aurantiaca H. F. Copeland 1932-8-19 Butte woods near the head Butte Creek; Jonesville 1800 Comment
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  CAS-BOT-BC447796  Agrimonia gryposepala John Thomas Howell 1962-6-15 37526 Butte Serpentine area, Magalia 731 Comment
  CHSC41978  Agrostis avenacea Lowell Ahart 1986-11-14 5468 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  UCD51764  Agrostis avenacea William Anderson 1965-6-13 s.n. Butte Table Mountain. 365 Comment
  UCD51814  Agrostis avenacea Bill B. Fischer 1977-6-1 s.n. Butte Biggs Rice Exper. Sta. Comment
  CHSC87216  Agrostis elliottiana Lowell Ahart 2004-4-6 10729 Butte Pasture field, Peter Ahart Ranch, about 2 1/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 35 Comment
  CAS-BOT-BC127337  Agrostis exarata Lowell Ahart 1977-7-8 1522 Butte Peter Ahart Ranch, Honcut. On the edge of North Honcut Creek. 50 Comment
  CHSC31729  Agrostis exarata L. Ahart 1977-6-16 1422 Butte On the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44913  Agrostis exarata Lowell Ahart 1988-7-24 6127 Butte At the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC84154  Agrostis exarata Lowell Ahart 2003-6-30 10333 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  UCD52416  Agrostis exarata A. A. Heller 1917-7-26 12825 Butte Butte Meadows. 1402 Comment
  UCD149814  Agrostis gigantea William Anderson 1965-6-20 s.n. Butte Canyon Creek. Comment
  CHSC78353  Agrostis hendersonii Lowell Ahart 2000-6-27 8515 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  SEINET10510256  Agrostis idahoensis Vernon H. Oswald, Lowell Ahart 1959-8-15 Oswald 3944 Butte Soda Ridge Rd, 1.4 mi W of its junction with Coon Hollow Rd, ca 1.2 mi (air) n of Philbrook Reservoir. On a boggy meadow adjacent to a shallow spring-fed lake N of and visible from the road. 1753 Comment
  CHSC90995  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  RSA715555  Agrostis microphylla L. Ahart 2005-5-11 11793 Butte South part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 359 Comment
  CAS-BOT-BC139080  Agrostis pallens Lowell Ahart 1980-7-29 2494 Butte Along Swedes Flat Road. 320 Comment
  CAS-BOT-BC139081  Agrostis pallens Lowell Ahart 1980-7-4 2462 Butte Along Forbestown Road. 750 Comment
  CHSC46077  Agrostis scabra J. D. Jokerst; R. A. Schlising 1982-10-7 1657 Butte Coon Hollow ca 1/2 mile west of where forest service road 27N74 crosses the West Branch of the Feather River. 1676 Comment
  CHSC28544  Agrostis stolonifera M. S. Taylor 1978-7-18 1676 Butte On w side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi n of Forest Ranch. 718 Comment
  SEINET10901700  Agrostis stolonifera Mary Susan Taylor 1978-7-18 Taylor 1676 Butte On W side of Hwy 32 on edge of Yellow Pine Forest in dry open area, 1/4 mi N of Forest Ranch. 718 Comment
  CHSC113417  Agrostis thurberiana Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC44176  Agrostis variabilis V. Oswald; L. Ahart 1988-7-26 3620 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 1996 Comment
  UCD53711  Agrostis variabilis A. A. Heller 1914-8-7 11660 Butte Locally abundant at the summit east of Jonesville. The type was collected in the Yellowstone Park. 2133 Comment
  JEPS113791  Agrostis viridis Lowell Ahart 2007-6-3 13977 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir 358 Comment
  CAS-BOT-BC47976  Ailanthus altissima John Thomas Howell 1959-9-20 34627 Butte Sierra Nevada - Lower foothills, eastern outskirts of Oroville Comment
  CHSC30712  Aira caryophyllea M. S. Taylor 1980-5-27 2704 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 Comment
  CHSC92548  Aira caryophyllea L. P. Janeway 2005-3-10 8345 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  HSC39885  Aira caryophyllea J. P. Smith 1973-3-22 5925 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CAS-BOT-BC138409  Aira caryophyllea var. capillaris Lowell Ahart 1980-4-7 2074 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CHSC47600  Aira elegans Lowell Ahart 1975-4-15 203 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CAS-BOT-BC445434  Alisma triviale M. S. Taylor 1978-7-22 1850 A Butte On se corner of Richvale East Rd and Erickson Rd, Richvale 30 Comment
  CHSC97373  Alisma triviale Paul Maslin 2006-6-15 39 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Man made pond near reserve headquarters. UTM: 10611097E 4411325N. 487 Comment
  UCD137977  Alisma triviale P. B. Kennedy 9-10 Aug 1921 s.n. Butte Exact location unknown. Comment
  CHSC20678  Allium amplectens M. S. Taylor 1975-6-30 822 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC30978  Allium amplectens B. Hollingsworth 1980-4-25 20 Butte Ca. 11 mi nw of Chico, 3.5 mi w of Hwy 99, 0.25 mi n of Cana Hwy, 0.625 mi e of Pine Creek. 45 Comment
  UC1339532  Allium amplectens S. W. Hutchinson 1933-4-28 5575 Butte near Chico 58 Comment
  UC203658  Allium amplectens A. A. Heller 1914-4-16 11299 Butte 2 mi from Chico (in the field near the Plant Introduction Garden) Comment
  UC767479  Allium amplectens R. F. Hoover 1938-4-24 3246 Butte 3 mi n Chico Comment
  CAS-BOT-BC460374  Allium amplectens C. C., Mrs. Bruce 1897-5-1 1899 Butte Fields near Chico Comment
  CAS-BOT-BC460735  Allium amplectens Lowell Ahart 1980-5-25 1330 Butte Along Hurleton-Swedes Flat Road. Comment
  CAS-BOT-BC460739  Allium amplectens A. A. Heller 1914-4-16 11299 Butte In a field near the Plant Introduction Garden, Cico-Centerville road, 2 miles from Chico. Comment
  SEINET5641950  Allium amplectens Linda M. Barker 1974-4-20 144 Butte Chico Quad. Skyway Road, one mile east of Hwy. 99.; 0 61 Comment
  SEINET8112102  Allium amplectens K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC465442  Allium campanulatum A. A. Heller 1917-7-29 12865 Butte Summit above Jonesville 2133 Comment
  CHSC21270  Allium cratericola M. S. Taylor 1973-4-21 15 Butte Ca. 1/4 mi w of Cherokee Rd, ca. 1 1/2 mi s of Cherokee, on Table Mountain. Comment
  CAS-BOT-BC135820  Allium jepsonii B. Castro 1993-7-5 492 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, on WSW-facing slope below N edge of sharp curve in USFS Rd 23N28. 1133 Comment
  CAS-BOT-BC135821  Allium jepsonii B. Castro 1993-7-27 489 Butte Ca 2.5 mi S of Big Bar Mtn, on SSE-facing slope ca 800 ft along both sides of USFS Rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  CHSC62601  Allium jepsonii B. Castro 1993-7-27 489 Butte Ca. 2.5 mi S of Big Bar Mtn, on SSE-facing slope 800 ft along both sides of USFS rd 22N84, ca 0.3 mi E of its jcn with Rd 23N28. 944 Comment
  UC843376  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  CHSC101188  Allium obtusum var. conspicuum L. P. Janeway; B. Castro 2009-4-18 9730 Butte Northern High Sierra Nevada. 'Hollywood Serpentine,' an isolated block of serpentine between the east end of Hollywood Drive, Magalia, and the upper end of Magalia Reservoir; west side of Little Butte Creek. 758 Comment
  POM193389  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville. 1500 Comment
  SEINET6225024  Allocarya greenei L. S. Rose 1967-1 67056 Butte Oraville, Comment
  UCD110029  Alnus rhombifolia John Steiner 1977-4-23 55 Butte S bank of Chico Creek at e end of Chico Canyon Road. 65 Comment
  CHSC49506  Alopecurus carolinianus Vernon Oswald 1988-4-13 3271 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  SEINET10511013  Alopecurus carolinianus Lowell Ahart 1982-5-10 Ahart 3430 Butte On dry soil of floor of rice field, Peter Ahart Ranch, ca. 2 mi. NE of Honcut. Very common; 50 m. Comment
  CHSC116741  Alopecurus saccatus Lowell Ahart 2016-5-17 10837 Butte Middle of a large vernal pool, about 1/2 mile east of La Porte Road, about 2 1/2 miles (air) east of Honcut. 47 Comment
  CHSC39627  Alopecurus saccatus Lowell Ahart 1983-5-12 3978 Butte About 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  CHSC84273  Alopecurus saccatus Lowell Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  SD149205  Alopecurus saccatus Lowell Ahart 1980-5-10 2236 Butte Peter Ahart Ranch, Honcut. 49 Comment
  CHSC115153  Amaranthus albus Lowell Ahart 2015-6-6 20202 Butte About 20 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  RSA722695  Amaranthus albus Richard Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC54559  Amaranthus californicus Lowell Ahart 1991-7-20 6667 Butte Gray Lodge Waterfowl Management Area, south-west of Gridley, about 1/2 mile south-east of the intersection of Pennington Road and Rutherford Road. 21 Comment
  JEPS122252  Amaranthus californicus Lowell Ahart 2014-9-23 19880 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC89437  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  CHSC85744  Amaranthus hybridus T. Gantenbein 1999-8-11 1198787 Butte Along rice field levee, Richvale. Comment
  UCD105585  Amaranthus retroflexus L. Ahart 1982-10-11 3850 Butte N of check-in station, Graylodge Wildlife Refuge, ca. 12 miles sw of Gridley. 35 Comment
  CHSC43596  Ambrosia artemisiifolia Vernon Oswald 1987-8-24 3223 Butte Skyway 0.4 mi SW of Toadtown (between DeSabla and Lovelock). 841 Comment
  UCD128818  Ambrosia psilostachya G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13076 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 35 Comment
  SEINET10971204  Ambrosia psilostachya var. californica Mary Susan Taylor 1977-8-19 Taylor 1505 Butte Abundant in slough ca. 3 mi E of junction of Hwy 42 with Hwy 162, on Hwy 162, S of Chico; with huge population of Hibiscus californicus. 30 Comment
  CAS-BOT-BC136691  Amelanchier alnifolia var. pumila Lowell Ahart 1980-5-19 2315 Butte Near bridge, South Fork of Feather River 800 Comment
  CHSC30019  Amelanchier pallida L. Ahart 1980-5-19 2315 Butte South Fork of the Feather River. Ca. 1/9 mi n of the Golden Trout Crossing, ca. 5 mi w of the Sly Creek Dam. Near bridge. 800 Comment
  SBBG117249  Ammannia coccinea B. Crampton 1957-9-17 4631 Butte 5 mi NW of Biggs, Biggs Rice Experiment Station Comment
  SEINET10452865  Ammannia coccinea Lowell Ahart 1990-10-5 Ahart 6632 Butte Below the high water line of Lake Oroville, about 1/8 mile south-west of the Enterprise Boat Launch Area, about 3/4 mile north-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S6. 229 Comment
  RSA0090972  Amsinckia A. A. Heller 1941-4-19 16069 Butte Crest of the hills west of Willows. Comment
  CHSC23470  Amsinckia intermedia J. R. Lee 1974-4-22 3 Butte 15 yds n of the Skyway roadside and 6 miles from the Chico city limits. 152 Comment
  CHSC90590  Amsinckia intermedia Tyler Williams 1984-3-12 3 Butte Ca. 500 yd n of Parking Area 'Q' on Upper Park Rd., in Upper Bidwell Park. 304 Comment
  SBBG50944  Amsinckia intermedia J. Doty 1969-3-31 617 Butte E side of Cohasset Rd, ca. 8 mi N of Chico Comment
  SEINET12290588  Amsinckia intermedia K. D. Johnson 1978-1 5 Butte edge of pasture on S side of Cohasset Road, 3.2 mi N of Chico 59 Comment
  JEPS87496  Amsinckia lycopsoides Lowell Ahart 1993-5-13 6935 Butte 1 3/4 mi n and 1/8 mi e of Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  RSA0089739  Amsinckia lycopsoides L. P. Janeway 2006-6-30 8561 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road, 2.4 km northeast of Bruce Road. 149 Comment
  UC725509  Amsinckia lycopsoides A. A. Heller 1930-3-23 15356 Butte grade toward Paradise just beyond Pentz Comment
  CHSC44895  Anaphalis margaritacea Lowell Ahart 1988-7-31 6143 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  JEPS115914  Andropogon virginicus var. virginicus Lowell Ahart 2009-11-19 16552 Butte On the east side of Big Chico Creek, southwest of a meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  JEPS98685  Andropogon virginicus var. virginicus Lowell Ahart 2000-9-27 8693 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
  UC1562474  Anemone drummondii Vernon Oswald and Lowell Ahart 1990-6-20 4307 Butte between Philbrook Reservoir and Carr Mine (s. side of Philbrook Creek, ca. 0.5 mi. w. of Butte-Plumas co. line) 1993 Comment
  CHSC33634  Anemone occidentalis R. E. Preston; R. A. Schlising, R. Banchero, D. Burk 1981-7-21 113 Butte Snow Mtn, ca. 7.2 km se of Jonesville. 2050 Comment
  CHSC42565  Angelica californica Vernon Oswald 1985-7-15 1902 Butte Ponderosa way (Rim Rd.) 3.1 mi n of Hwy 70 at Jarbo Gap. 853 Comment
  SEINET10454783  Angelica californica Mary Susan Taylor 1980-9-12 Taylor 3335 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CAS-BOT-BC84696  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte Near Durham Comment
  SEINET10473583  Anthemis cotula Mary Susan Taylor 1975-10-3 Taylor 939 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  SEINET10964553  Antirrhinum cornutum Mary Susan Taylor 1975-10-3 Taylor 937 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CHSC114984  Aphyllon purpureum Lowell Ahart 2015-4-18 20056 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) eastof Oroville. 752 Comment
  SD3750  Apocynum androsaemifolium E. B. Copeland 1930-7-7 Butte In shelter of rocks, Jonesville. Comment
  UC600768  Apocynum androsaemifolium H. F. Copeland 1930-7-26 1319 Butte on ridge above hotel and lower down Jonesville Comment
  CHSC45032  Aquilegia formosa var. truncata Kirsten Tarp 1982-7-24 224 Butte E of Powellton. 975 Comment
  CHSC52689  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-27 365 Butte N part of county, N of Philbrook Resevoir, at Coon Hollow. 1682 Comment
  NY9760  Arctostaphylos A. A. Heller 1928-1-17 14473 Butte About a mi below the Ten Mile House E of Chico, in red clay in the Upper Sonoran life zone. Comment
  RSA633007  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27456 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52097  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51105 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC109112  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2012-2-22 17736 Butte On the north side of Ten Mile House road, about 1/2 mile west of Highway 32, about 9 miles (air) northeast of Chico. 335 Comment
  CHSC40333  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 1985-2-17 4839 Butte About 2 miles south of Paradise. 167 Comment
  OBI69253  Arctostaphylos manzanita subsp. manzanita Kari Fisher, Bill Fisher 2000-11-11 57 Butte Bidwell Park, along Chico Creek, close to golf course. 84 Comment
  SEINET11998375  Arctostaphylos manzanita subsp. roofii W. Knight, Knight, I. 1989-1 6496 Butte 0.6 mi S of summit of Cohasset Rd 518 Comment
  UC725335  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 mi below Paradise (on Pentz-Magalia Rd) Comment
  UC726640  Arctostaphylos mewukka A. A. Heller 1942-1-18 16354 Butte one mi above De Sabla Comment
  UC726678  Arctostaphylos mewukka A. A. Heller 1942-2-7 16361 Butte along Neal Rd 3 mi below Paradise Comment
  CHSC108842  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. 254 Comment
  SBBG126089  Arctostaphylos mewukka subsp. mewukka L. Ahart 2012-1-12 17175 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut, ca 12 mi SE of Oroville 45 Comment
  CAS-BOT-BC38556  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51563 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC38613  Arctostaphylos mewukka subsp. truei John Thomas Howell 1955-6-15 30488 Butte 6 miles from Paradise on road to Pentz 426 Comment
  SD147589  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  UCD40394  Arctostaphylos patula Rodney Gale Myatt 1971-6-13 721 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  UCD52621  Arctostaphylos viscida John Thomas Howell 1975-6-15 51085 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CHSC21776  Arctostaphylos viscida subsp. viscida Robert A. Schlising 1974-9-17 3158 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  RSA13427  Arctostaphylos viscida subsp. viscida H. F. Copeland 1932-6-24 A 3 Butte Humboldt Grade, about 12 mils from Chico. Comment
  SBBG125911  Arctostaphylos viscida subsp. viscida L. Ahart 2010-7-27 16912 Butte ca 100 yards SW of intersection of Forbestown Rd and Black Bart Rd, ca 11 mi E of Oroville 741 Comment
  CHSC78553  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC137554  Aristida oligantha Lowell Ahart 1983-8-16 4278 Butte Sierra Nevada. One mile east of Chico, on Highway 32. 100 Comment
  CHSC30863  Aristolochia californica J. D. Jokerst 1979-3-23 1159 Butte Top of North Table Mt., W edge of Mt, immediately N of the waterfalls of the S fork of Coal Cr Canyon. 365 Comment
  POM20567  Aristolochia californica Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. Comment
  CAS-BOT-BC82410  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC118071  Arnica fulgens L. P. Janeway 2016-5-16 12006 Butte Modoc Plateau. Devils Garden area; junction of Road 46N02 at Road 47N09/73/181; 2.0 air-km east of Green Spring Reservoir. 1585 Comment
  SEINET10935029  Arrhenatherum elatius Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4189 Butte T23N R4E nw sec 10. Along edge of dirt road, ca. 3 mi se of Stirling City, on w side of West Branch of Feather River. Yellow Pine Forest; 1100 m. 1100 Comment
  CAS-BOT-BC146271  Arrhenatherum elatius var. elatius Lowell Ahart 1988-7-31 6151 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City. 914 Comment
  CHSC28531  Artemisia douglasiana M. S. Taylor 1979-9-28 2198 Butte At Butte County line at Hwy 70, between boundry and Arch Rock Tunnel. 487 Comment
  CHSC8570  Artemisia douglasiana M. MacArthur 1968-6-13 352 Butte Dried part of Big Chico Creek bed just W of Esplanade Bridge, Chico State College. 60 Comment
  CAS-BOT-BC90288  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch Comment
  UC196343  Asclepias eriocarpa A. A. Heller 1914-7-13 11573 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  CHSC66430  Asclepias speciosa Vernon H. Oswald; Lowell Ahart 1996-6-10 7749 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. Near a U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  CAS-BOT-BC65910  Aspidotis densa H. F. Copeland 1920-8-2 201 Butte near Jonesville 1219 Comment
  SEINET10474435  Aster oregonensis subsp. californicus Mary Susan Taylor 1979-9-28 Taylor 2196 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CHSC33759  Aster radulinus Robert A. Schlising 1979-9-6 3485 Butte Near jct Hwy 32 and Forest Ranch Road above Forest Ranch. Comment
  CHSC40605  Astragalus gambelianus Ahart; Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 550 Comment
  JEPS119691  Astragalus gambelianus Lowell Ahart 2012-5-2 17957 Butte About 80 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CAS-BOT-BC192797  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 miles from Chico Comment
  CAS-BOT-BC192798  Astragalus pauperculus Robert F. Hoover 1938-4-24 3236 Butte 3 miles north of Chico Comment
  CHSC48006  Asyneuma prenanthoides Vernon Oswald 1983-7-19 874 Butte Doon Campground, ca. 1 mi e of Love lock on the Skyway n-e of Paradise. 822 Comment
  CHSC88249  Asyneuma prenanthoides Lowell Ahart 2004-7-11 11247 Butte Along the dirt road, on the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC28411  Athyrium filix-femina M. S. Taylor 1977-7-16 1422 Butte Along west branch of Feather River, ca. 1 mi e of the Skyway, ca. 1 mi n of Magalia. 677 Comment
  UC398876  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  CHSC100968  Athysanus pusillus Lowell Ahart; Josephine Guardino, Steve Green 2009-2-20 15488 Butte On the south slope of a ridge about 150 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 364 Comment
  SEINET11983097  Athysanus pusillus Unknown 1978-1 3 Butte ca 900 ft E of Big Chico Creek, ca 1200 ft NE of jct of Humbug & Honey Run Rds, 6.4 mi ESEof Chico 146 Comment
  JEPS90671  Atriplex cordulata Vernon H. Oswald 1993-7-29 5728 Butte w of Gridley (Gray Lodge Wildlife Management Area, w side of levee road, 100 ft s of Parking Lot 5 on Rutherford Road, 0.5 mi w of Pennington Road); Gray Lodge Wildlife Management Area 21 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  JEPS90629  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC48287  Atriplex triangularis Vernon Oswald 1983-10-10 1077 Butte Indian Fishery, Bidwell River State Park w of Chico at the jct. of W. Sacramento Ave. and River Rd. Comment
  JEPS117709  Avena fatua Lowell Ahart 2010-5-7 16629 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico 246 Comment
  CHSC8167  Avena sativa M. Banning 1969-3-22 19 Butte South edge of Chico Golf Course, Bidwell Park. 73 Comment
  CDA34273  Azolla filiculoides L. Ahart 2009-10-8 16412 Butte About 20 yards east of Parking Lot 13, Gray Lodge Waterfowl Management Area. Approximately, 7 miles (air) southwest of Gridley. Comment
  CAS-BOT-BC66215  Azolla filiculoides Mrs. R. M. Austin 1894-6-1 s.n. Butte Cold Springs, Willow Creek Comment
  SEINET10530429  Azolla mexicana Mary Susan Taylor 1982-4-28 Taylor 4370 Butte T17N R1E se/sw sec 14. Pennington quad. Aquatic in slough, ca. 1/2 mi s of HQ on Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  POM350340  Baccharis glutinosa L. Ahart 1984-10-14 4814 Butte North Honcut Creek, about 3/4 mile north and 2 miles east of Honcut, on Joie Osgood property, about 12 miles south of Oroville. 40 Comment
  CHSC85440  Baccharis pilularis R. D. Fischer 2003-11-25 11 Butte Centerville. Sierra Nevada foothills between Chico and Paradise in the Butte Creek canyon. At the edge of the Centerville Rd. 3.9 miles north of the Honey Run Rd and Centerville Rd junction (covered bridge), 0.1 miles north of Center Gap Rd. 182 Comment
  CHSC40296  Baccharis pilularis subsp. consanguinea Lowell Ahart 1985-2-17 4838 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  CAS-BOT-BC98186  Baccharis salicifolia Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  CDA20248  Bacopa eisenii G. D. Barbe 1984-8-25 4191 Butte Sacramento Valley; Biggs Rice Experiment Station, N of Biggs. 0 Comment
Read comments
Dec 5 2007
  UC600734  Balsamorhiza sagittata H. F. Copeland 1932-6-29 Butte Jonesville 2000 Comment
  CHSC6025  Bambusa M. MacArthur 1968-6-19 240 Butte Along NW side of Big Chico Creek, ca. 200 ft. NE bridge to PSA bld., Chico State College. 60 Comment
  CAS-BOT-BC75547  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  CHSC76415  Bergia texana Lowell Ahart 1999-10-28 8308 Butte 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 9air) southwest of Chico. 32 Comment
  CHSC84020  Bergia texana Lowell Ahart 2003-6-23 10306 Butte In a rice field, Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  CAS-BOT-BC169392  Betula W. R. Dudley 1899-8-1 s.n. Butte Upper Sacramento River Comment
  CAS-BOT-BC102070  Bidens frondosa Lowell Ahart 1989-9-21 6398 Butte On a small branch of French Creek, north of the gravel road, about 1 mile west of the Sly Creek Reservoir 1158 Comment
  CAS-BOT-BC102071  Bidens frondosa A. A. Heller 1913-9-12 11134 Butte Chico, on Big Chico creek Comment
  CHSC31576  Bidens frondosa Lowell Ahart 1976-6-27 1145 Butte Along the edge of North Honcut Creek, near Honcut. 45 Comment
  RSA726433  Bidens frondosa L. Ahart 2007-11-3 14570 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CAS-BOT-BC102069  Bidens frondosa Lowell Ahart 1985-11-7 5238 Butte Near Ponderosa Dam Lake Oroville 274 Comment
  SEINET10474476  Blennosperma nanum Mary Susan Taylor 1973-1 Taylor 62 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  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
  JEPS122214  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  UC726942  Boechera breweri subsp. shastaensis A. A. Heller 1920-3-28 13359 Butte Ten Mile House Comment
  UCD114350  Boechera breweri subsp. shastaensis R. E. Preston 1982-4-7 235 B Butte S facing cliffs of Cape Horn; ca. 4.5 mi SE of Paradise. 335 Comment
  SEINET3149564  Boisduvalia densiflora L. S. Rose 1939-6-11 39276 Butte 6 mi. E of Honcut 137 Comment
  RSA166310  Boisduvalia stricta D. M. Moore 1960-6-1 91 Butte U.S. 40A, 4.7 mi. S of S Oroville (Dahl s Motel) Comment
  CHSC36842  Bolboschoenus glaucus M. S. Taylor 1982-5-22 4503 Butte Graylodge Waterfowl Refuge, in vicinity of parking lot 6, on Rutherford Rd, ca. 1/2 mi e of its jct with Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC66455  Bolboschoenus glaucus Vernon H. Oswald 1996-6-10 7757 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  JEPS88224  Bolboschoenus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7757 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (in the ne corner of corner of Tract 7.2, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  UC1100853  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12734 Butte nw Pennington (Gray Lodge Game Refuge); , nw of Pennington Comment
  UC777276  Botrychium W. H. Wagner Jr. with F. S. Wagner and Dr. E. B. Copeland 1949-7-16 4609 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  UC1751231  Botrychium ascendens Timothy B. Devine 1985-7-7 844 b Butte 3/4 mi N of Jonesville (beside Willow Creek about 1/4 mi N of jct with road to Colby Mountain Lookout) 1524 Comment
  UC600573  Botrychium simplex H. F. Copeland 1931-6-6 Butte Jonesville, below cabin Comment
  JEPS117722  Botrychium simplex var. compositum Lowell Ahart 2010-9-28 17242 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC43058  Boykinia major L. P. Janeway 1987-6-26 2321 Butte SW end of Logue Meadows. 1325 Comment
  UCD57008  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 miles east of Oroville. 152 Comment
  CHSC110130  Brassica rapa L. P. Janeway 2012-4-3 10804 Butte Sacramento Valley. Along old rock wall on south side of Humboldt Road 0.3 km east of Bruce Road, across from rehabbed and covered area of old dump site. 86 Comment
  CHSC103986  Briza maxima Lowell Ahart 2010-5-14 16636 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 376 Comment
  CHSC52485  Briza maxima R. L. Ondricek 1982-5-25 135 Butte NE side of tip of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CAS-BOT-BC145532  Briza minor A. A. Heller; H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek) Comment
  CHSC81426  Briza minor J. Trizzino 2001-4-30 66 Butte Upper Bidwell by Horseshoe Lake along seasonal creek drainage. 109 Comment
  UCD80420  Brodiaea californica CNPS SN Foothill Team 2005-5-6 SNFN 0159 a Butte City of Chico, Upper Bidwell Park. The stand is about X miles up the road from the gate. 133 Comment
  SEINET10472611  Brodiaea californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4081 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC482217  Brodiaea californica subsp. californica A. A. Heller 1914-5-11 11389 Butte Hills 8 miles north Oroville Comment
  UC768722  Brodiaea californica var. californica R. F. Hoover 1936-5-21 1172 Butte 3 mi n Cana Comment
  UCD77203  Brodiaea coronaria Robert E. Preston 2003-5-18 2140 Butte Ca. 2.25 mi N of Cana, along Cana-Pine Creek Rd, ca. 0.4 mi N of Pine Creek 51 Comment
  UC203652  Brodiaea coronaria subsp. coronaria A. A. Heller 1914-5-8 11382 Butte near Clear Creek school house Comment
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Jun 17 2014
  CHSC2074  Brodiaea elegans E. Walker 1932-6-26 Butte Magalia Heights. 731 Comment
  CHSC91471  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south 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. 748 Comment
  SEINET223331  Brodiaea minor Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3270 Butte Peter Ahart Ranch about 2.5 miles north-northeast of Honcut between Oroville and Marysville 30 Comment
  UC659998  Brodiaea minor L. Constance 1941-5-28 2825 Butte 3 mi SW of Paradise 304 Comment
  SEINET10938211  Brodiaea multiflora Mary Susan Taylor 1974-3-5 Taylor 72 A Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC21265  Brodiaea nana M. S. Taylor 1975-5-1 376 Butte Ca. 1/2 km w of junc of Clark and Pentz Rds, ca. 17m se of Chico. 91 Comment
  CHSC3529  Brodiaea nana John Francis 1966-5-7 156 Butte 4.2 miles N. of intersection of Pentz Rd. and Hwy. 99E., on Pentz Rd. Comment
  RSA712646  Brodiaea sierrae L. P. Janeway 2005-7-16 8497 Butte Northern High Sierra Nevada; on Rocky Ridge, along Rim Road (Ponderosa Way); about 1.3 km south of Bachelor Point. 927 Comment
  CAS-BOT-BC486480  Brodiaea sierrae John Thomas Howell 1955-6-14 30436 Butte Magalia 731 Comment
  CAS-BOT-BC486481  Brodiaea sierrae John Thomas Howell 1951-6-26 27512 Butte Feather River Canyon 213 Comment
  SEINET10506848  Bromus Mary Susan Taylor 1981-5-1 Taylor 3581 Butte T20N R3E center sec 26, Oroville quad. E side of Hwy 70, ca. 4 air mi NW of Oroville. Valley Grassland; 300 ft. 91 Comment
  UCD58295  Bromus carinatus var. californicus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 Comment
  CHSC88253  Bromus carinatus var. carinatus Lowell Ahart 2004-7-11 11230 Butte On the south side of the road, on the northeast side of Paradise Lake, about 1/8 mile southwest of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC31732  Bromus catharticus L. Ahart 1979-5-3 1855 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC156027  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC156072  Bromus diandrus Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC101659  Bromus diandrus Lowell Ahart 2009-4-26 15611 Butte About 10 miles northeast of Chico, Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road. 461 Comment
  HSC32411  Bromus diandrus Dave Knorr 1974-4-20 120 Butte On Pentz Rd. near intersection with Clark Rd. Comment
  UCD59475  Bromus diandrus A. A. Heller 1914-4-11 11280 Butte 8 miles N of Oroville. Comment
  CHSC117543  Bromus japonicus Lowell Ahart; John Dittes 2016-7-13 21144 Butte Scattered along the west edge of the pond, 100 yards south of County Road A02, 5.3 miles (air) east of Biebedr, 7.3 miles (air) southwest of Adin, hills at the southern slope of Big Valley. 1289 Comment
  CHSC42141  Bromus japonicus Lowell Ahart 1979-6-9 1932 Butte East of Kunkle Creek, south-east of Paradise. 457 Comment
  CHSC101463  Bromus laevipes L. P. Janeway; Sarah Starkey 2009-7-13 9856 Butte Northern High Sierra Nevada. Upper end of Rocky Ridge, southwest side of Rim Road (Ponderosa Way) 0.3 km southeast of Concow Road near the quarry. 978 Comment
  CHSC37091  Bromus laevipes L. Ahart 1982-9-13 3806 Butte Along edges of wash that flows into Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2 and 1/8 mi nw of Strawberry Valley. 1100 Comment
  SEINET11688365  Bromus laevipes Unknown 1985-1 4987 Butte E of dirt road, ca 1.5 mi NE of Concow Reservoir, NE of Oroville 732 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC49701  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-15 1707 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  CHSC95033  Bromus orcuttianus L. P. Janeway 2006-7-9 8808 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
  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
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  UCD60256  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC61340  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte About 2 1/2 mi NE of Bald Mountain, about 6 1/2 mi NE of Stirling City. 1584 Comment
  CHSC71265  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte Below of W of a large seep, W of the lone oak tree, W of the cow chute on the W side of Cherokee Road, North Table Mountain, about 7 mi (air) N of Oroville. 396 Comment
  UC600490  Calandrinia ciliata H. F. Copeland 1931-7-10 Butte gulch opening into Colby Canyon; Jonesville 1524 Comment
  CHSC103992  Callitriche marginata Lowell Ahart 2010-5-14 16651 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  SEINET10972756  Callitriche marginata Mary Susan Taylor 1980-3-15 Taylor 2379 A Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  RSA769227  Calocedrus decurrens L. Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 270 Comment
  SEINET10531075  Calocedrus decurrens Locey 1975-5-6 LOCEY 22 Butte 10 yds s of Fitzgerald Road and 50 yds e of Highway 32, at Forest Ranch. Woodland. Elevation 2357 feet. 717 Comment
  SEINET11738872  Calocedrus decurrens D. J. Straub 1977-1 17 Butte ca 300 yards SE of Magalia Reservoir & 0.5 mi N of West Branch Feather River 853 Comment
  CHSC116969  Calochortus albus Danielle Gee 2013-4-27 Butte Dark Canyon Road, about 2.5 miles off Hwy 70. 400 Comment
  CHSC2839  Calochortus albus David Prall 1965-4-25 25 Butte On roadside bank of north side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge). 152 Comment
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  CAS-BOT-BC487517  Calochortus albus C. C., Mrs. Bruce 1897-5-1 s.n. Butte Foothills Comment
  SEINET12046117  Calochortus albus Unknown 1978-1 12 Butte Butte Creek Canyon, 3.5 mi up from the Skyway, 300 yd in front of gaging station 122 Comment
  CHSC25013  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  UC398903  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte above Jonesville 2000 Comment
  CHSC104827  Calochortus luteus Lowell Ahart 2010-6-1 16758 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  POM169357  Calochortus luteus A. A. Heller, H. E. Brown 1902-5-8 5494 Butte Berry Canyon (near Clear Creek) Comment
  CAS-BOT-BC492564  Calochortus minimus E. K. Balls; L. W. Lenz 1955-5-13 20698 Butte 7 mi. ne. from Pentz Trading Sta. on rd. to U.S. Hwy. 40 alt. from Oroville-Magalia road 579 Comment
  CHSC101328  Calochortus monophyllus Lowell Ahart 2009-4-22 15597 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
  CHSC44980  Calochortus monophyllus R. E. Alumbaugh 1984-4-26 15 Butte Scattered 1.2 mi n of Butte creek and 5 ft e of Centerville rd, across from Centerville cemetary, 0.9 mi n of Centerville. 350 Comment
  SEINET10469601  Calochortus monophyllus Mary Susan Taylor 1973-1 Taylor 28 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  SEINET12048524  Calochortus monophyllus G. C. Russell 1975-1 1 Butte 8.2 km NE of Chico Municipal Airport 325 Comment
  UC119763  Calochortus monophyllus Mrs. R. M. Austin Apr 1896 Butte Baker Little Chico Creek Comment
  CHSC4134  Calochortus tolmiei R. Carter 1966-4-26 359 Butte Found ca. 10 mi. NE Oroville along W side USFS road 21N40 to Bloomer Mt., 0.5 mi. W from intersection with Oroville-Quincy Rd. 701 Comment
  CHSC25422  Calycadenia ciliosa M. Hayes; Warner 1977-9-6 54 Butte Upper Bidwell Park, ca. 1.8 mi from end of paved road (Wildwood Drive) across from Chico Municipal Golf Course, ca. 200 yds up SE facing slope of Big Chico Creek Canyon. 129 Comment
  CHSC63696  Calycadenia ciliosa Lowell Ahart 1994-10-8 7551 Butte Along North Rim Trail, near the double power lines, Bidwell Park, about 1 mile east of Chico. 152 Comment
  CAS-BOT-BC273295  Calycadenia fremontii Marc Hayes; Robert Schlising 1978-5-14 s.n. Butte About 10 miles nw. of Chico on Broyles Road (Wurlitzer Rd. [Ranch]) Comment
  CAS-BOT-BC270050  Calycadenia multiglandulosa David D. Keck 1930-7-25 980 Butte 4 miles W of Forbestown, on Oroville Road, E part of county 760 Comment
  JEPS80686  Calycadenia multiglandulosa L. R. Heckard and T. I. Chuang 1981-6-11 5537 Butte 0.5 mi w of junction (ca. 12 air mi e of Oroville) Lumpkin Road (along Forbestown Road) 609 Comment
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Dec 21 2012
  CAS-BOT-BC106076  Calycadenia oppositifolia David D. Keck 1930-7-25 975 Butte Hurleton, ten miles east of Oroville, on Forbestown Road, eastern Butte County. 487 Comment
  CAS-BOT-BC106080  Calycadenia oppositifolia Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC106081  Calycadenia oppositifolia John Thomas Howell 1951-6-26 27513 Butte Feather River Canyon, Sierra Nevada 213 Comment
  CHSC45089  Calycadenia oppositifolia L. P. Janeway 1988-6-14 2759 Butte Little Chico Cr ca 1 3/4 air mi S of Ten Mile House, along the road to Doe Mill Ridge. NW-facing slope on SE side of cyn. 274 Comment
  CHSC45090  Calycadenia oppositifolia L. P. Janeway 1988-6-19 2815 Butte Ca 100 ft (elev.) above Honey Run Rd, 2.6 mi from Humbug Rd, and near powerlines (3-wire, wooden pole). 243 Comment
  CHSC62147  Calycadenia oppositifolia B. Castro 1987-5-21 124 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. In middle of dirt road along top of ridge. 487 Comment
  CHSC75901  Calycadenia oppositifolia G. F. Hrusa; T. D. Wilfred 1997-7-3 13989 Butte Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 725 Comment
  CHSC112038  Calycadenia spicata Lowell Ahart 2012-8-22 18420 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  UC1971680  Calycadenia spicata 1977-7-5 2030 Butte Old jct of Durham Dayton Hwy with Hwy 99, 4.15 mi E of Durham (= GDC 565) 56 Comment
  UCD129792  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99, at Durham Road, 10 miles southeast of Chico. Comment
  CHSC102725  Calycadenia truncata Lowell Ahart 2009-6-30 15954 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  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
  UC89045  Calycadenia truncata H. E. Brown Nov 15 1896-Nov 30 1896 121 Butte near Clear Creek 53 Comment
  UC1971668  Calycadenia truncata 1977-7-7 2034 Butte 2.3 mi SE of Oroville - Quincy Hwy on Big Ridge Road NW of Oroville 628 Comment
  SEINET10475219  Calycadenia truncata subsp. scabrella Mary Susan Taylor 1979-6-22 Taylor 2166 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  POM253181  Calycadenia truncata subsp. truncata A. A. Heller 1938-6-14 15152 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CAS-BOT-BC275378  Calycadenia truncata var. truncata David D. Keck; J. Clausen 1935-6-25 3778 Butte 2.2 miles S of Flea Valley on road to Yankee Hill Comment
  CAS-BOT-BC90928  Calycanthus occidentalis John Thomas Howell 1967-6-22 42640 Butte Sierra Nevada. 1 mile southwest of Pulga Bridge Canyon of the Feather River North Fork. Comment
  UC854796  Calycanthus occidentalis R. Sprague 1939-5-20 Butte Feather River Comment
  UC176693  Calyptridium monospermum A. A. Heller 1913-6-7 10804 Butte near Stirling 1074 Comment
  CHSC30088  Calyptridium umbellatum M. S. Taylor; J. D. Jokerst, L. Ahart 1980-8-2 3212 Butte Humboldt Peak, on the top. 2154 Comment
  CHSC66383  Calystegia occidentalis subsp. occidentalis Vernon H. Oswalk; Lowell Ahart 1996-6-17 7811 Butte Bizz Johnson Trail accessed at Devils Corral Trailhead located off of Hwy 36 ca 7 mi w of Susanville.Modoc Plateau. Growing on slop at 6.0 mile post E of Dvils Corral Trailhead. 1420 Comment
  CAS-BOT-BC496959  Camassia leichtlinii subsp. suksdorfii H. F. Copeland 1930-7-11 56 Butte Scotch John meadows 1828 Comment
  SEINET10472624  Camassia leichtlinii subsp. suksdorfii Mary Susan Taylor 1978-6-24 Taylor 1661 Butte Montane Meadow, on N side of Old Humboldt Road, across the road from Butte Meadows; Yellow Pine Forest. 1372 Comment
  RSA699700  Campanula prenanthoides L. Ahart 2004-7-11 11247 Butte On the southeast edge of Paradise Lake, about 3/4 mi. northeast of the picnic area, about 1 mi. northeast fo Paradise Dam, about 4 mi. (air) southwest of Stirling City. Yellow Pine Forest. 815 Comment
  CHSC108863  Capsella bursa-pastoris Lowell Ahart 2012-3-2 17766 Butte On the sides of the Bloody Pin Trail, about 100 yards west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico. 304 Comment
  CHSC112203  Capsella bursa-pastoris Lowell Ahart 2013-4-20 18556 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CHSC113235  Capsella bursa-pastoris Lowell Ahart 2014-4-26 19418 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  CAS-BOT-BC37264  Cardamine breweri H. F. Copeland 1929-6-9 1251 Butte Jonesville. 1524 Comment
  RSA4216  Cardamine breweri E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  UC117855  Cardamine californica R. M. A. Feb. 1883 332 Butte banks Little Chico Creek; banks Little Chico Creek Comment
  CHSC38416  Cardamine oligosperma Vernon Oswald 1983-3-4 109 Butte Upper Bidwell Park, Chico, on the north slope ca. 300 ft n of Upper Park Rd. at a point 2.4 mi e of the power lines. 256 Comment
  CHSC101492  Cardamine pachystigma var. dissectifolia Samantha Mackey Hillaire 2007-4-17 1250 Butte DeSabla Powerhouse Road, Butte Creek Canyon, approximately 1 mile SW of DeSabla Reservoir. UTM 10 618377E, 4414780N. 463 Comment
  CHSC101155  Carduus pycnocephalus Lowell Ahart 2009-5-15 15691 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC103975  Carduus pycnocephalus Lowell Ahart 2010-5-7 16613 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
  CHSC106866  Carduus pycnocephalus Lowell Ahart 2011-5-1 17333 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  JEPS119892  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2012-6-5 18172 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
  CHSC112785  Carex Lowell Ahart 2013-5-27 18710 Butte On both sides of the meadow, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 763 Comment
  JEPS120144  Carex Lowell Ahart 2012-6-14 18190 Butte On the south side of path, southwest of CARD Community Center, Lower Bidwell Park, Chico. Comment
  JEPS120929  Carex Lowell Ahart 2013-5-27 18710 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  SJSU15296  Carex Lisa Morton 2002-3-31 18 Butte Upper Bidwell Park along Middle Trail 50 Comment
  JEPS116030  Carex amplifolia Lowell Ahart 2009-6-30 15974 Butte On the bottom of a deep ditch, on the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  JEPS94568  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  CHSC53753  Carex angustata L. P. Janeway 1986-9-1 1832 Butte East end of Philbrook Reservoir. 1691 Comment
  CAS-BOT-BC19108  Carex aurea Lowell Ahart 1981-8-15 3046 Butte Southeas of Snag Lake (about 3 miles south of Jonesville). 1524 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
  SEINET10752408  Carex brainerdii Lawrence P. Janeway 1988-7-16 Janeway 3009 Butte T26N, R4E, Jonesville quad (15') SE1/4 of sec. 12. Along Colby Mountain Rd., 1/2 mi N of Jonesville. Comment
  CHSC42370  Carex densa Lowell Ahart 1987-5-10 5610 Butte On the banks of Wyandotte Creek, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville. 30 Comment
  JEPS94824  Carex densa Lowell Ahart 1998-6-9 7989 Butte about 7 air mi n of Oroville (sw of the ione oak tree, nw of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CDA43058  Carex divulsa L. P. Janeway 2010-6-3 9989 Butte Sacramento Valley.; Oroville: Centennial Plaza on top of the levee along the south side of Feather River between the north ends of Lincoln Street and Oak Street. Comment
  CHSC106048  Carex divulsa L. P. Janeway 2010-6-3 9989 Butte Sacramento Valley. Oroville: Centennial Plaza on top of the levee along the south side of Feather River between the north ends of Lincoln Street and Oak Street. 57 Comment
  CHSC104835  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 406 Comment
  SEINET12649387 Image available Carex flacca L. P. Janeway 2009-1 9795 Butte 59 Comment
  CAS-BOT-BC21237  Carex fracta Clarence Roy Quick 1963-7-16 63 -43 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC37065  Carex fracta L. Ahart 1982-9-29 3837 Butte On banks of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC83286  Carex fracta L. P. Janeway; B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  JEPS102953  Carex fracta L. P. Janeway, B. Castro 2002-7-7 7622 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  CAS-BOT-BC28379  Carex gracilior W. H. Wheeler 1944-6-8 s.n. Butte US plant Introduction Garden (Edgar Slough) Chico. Comment
  CHSC85918  Carex gracilior L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-10 7755 Butte Northern High Sierra Nevada. Near western end of peninsula between Middle and South Forks Feather River arms of Lake Oro-ville; 2.1 km east of the Bidwell Bar Bridge; next to Craig Saddle Boat-in Campground. 290 Comment
  CAS-BOT-BC20459  Carex gynodynama Lowell Ahart 1980-7-4 2461 Butte Along Forbestown Road. 750 Comment
  CHSC76350  Carex hoodii L. P. Janeway 1999-7-17 6506 Butte Along Scotts John Creek 0.2 mi north of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  JEPS117643  Carex integra Lowell Ahart 2010-9-28 17271 Butte About 20 yards west of Big Kimshew Creek, meadow, 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
  RSA725282  Carex jonesii L. Ahart 2006-8-15 13175 Butte 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. 1570 Comment
  CAS-BOT-BC7782  Carex laeviculmis Clarence Roy Quick 1963-7-16 63 50 b Butte Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CHSC42815  Carex lemmonii L. P. Janeway 1987-6-13 2215 Butte Mdw just NE of jct of Concow Rd and rd to Flea Mtn. 1188 Comment
  CHSC42821  Carex lemmonii L. P. Janeway 1987-6-19 2244 Butte Along Barton Hill Rd towards Sly Cr Reservoir, 1.7 mi from the Challenge-LaPorte Rd and Travis Saddle. 1066 Comment
  CHSC47059  Carex lemmonii L. P. Janeway 1989-5-19 3261 Butte Seep along Jordan Hill Rd 8.0 mi N of Concow Rd. 929 Comment
  JEPS105283  Carex lemmonii Dean W. Taylor 1995-8-6 15396 Butte 5 air mi NE of Stirling City; boggy meadow 0.5 mi E of Bald Mountain summit; Lassen National Forest; Northern Sierra Nevada 1706 Comment
  JEPS109921  Carex lemmonii Dean W. Taylor 2006-8-17 19643 Butte Keyser Creek; boggy fen with patterned ground [ca. 5 miles NNE of Stirling City] 1524 Comment
  RSA783697  Carex lemmonii Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16767 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. Comment
  SD471  Carex lemmonii E. B. Copeland 1929-7-5 Butte Jonesville; in a sunny bog. 1500 Comment
  CHSC105834  Carex mariposana Lowell Ahart 2010-7-27 16928 Butte High bank on the west side of the South Fork of the Feather River, east of Forest Road 22N68, about 1/4 mile southwest of the Feather Fork Mine, about 1-1/2 miles (air) northeast of Little Grass Valley Reservoir 1565 Comment
  CHSC52255  Carex microptera L. P. Janeway; R. A. Schlising 1988-7-1 2936 Butte Creekbed of Willow Cr where Humbug Rd crosses. 1874 Comment
  CHSC31673  Carex nudata L. Ahart 1976-4-12 1061 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC77171  Carex nudata G. F. Hrusa; T. D. Wilfred 1997-5-1 13698 Butte The Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 785 Comment
  JEPS117597  Carex pachystachya var. pachystachya Lowell Ahart 2010-9-28 17271 A Butte On damp black soil, about 20 yards west of Big Kimshew Creek, in shade, others out in the open dry meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reserv 1886 Comment
  JEPS104628  Carex praegracilis Lowell Ahart 2000-4-27 8330 Butte On the cut bank on the west side of Pennington Road, about 400 feet north of Rutherford Road, Gray Lodge Waterfowl Management Area, about 6 miles (air) SW of Gridley. 21 Comment
  JEPS106104  Carex praegracilis Lowell Ahart 2004-4-4 10728 Butte In a pasture, on the north side of Richvale Highway, about 1/2 mile east of Richvale 32 Comment
  JEPS102949  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte Within the City of Chico; south side of town; in backyard lawn at 129 W. 19th Street 60 Comment
  CHSC106159  Carex subfusca Peter F. Zika 2009-6-17 24508 Butte Cascade Range Highlands (CaRH), SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC45071  Carex subfusca Vernon Oswald 1987-5-12 2391 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. On the edge of Butte Creek. 80 Comment
  UCD140909  Carex subfusca E. B. Copeland 1929-7-20 611 Butte Jonesville. 1500 Comment
  CAS-BOT-BC116744  Carex subfusca L. P. Janeway 1988-6-16 2810 Butte Along Butte Cr, 1/4 mi S of Humboldt Rd via the road in the W side of the canyon. 1264 Comment
  OBI20285  Carex subfusca H. F. Copeland 1932-7-14 s.n. Butte Vicinity of Jonesville, Lassen Natl Forest Comment
  UCD141168  Carex subfusca L. P. Janeway; R. A. Schlising 1988-7-22 3075 Butte just above the High Lakes Road 3.4 miles west of the pass. 1905 Comment
  JEPS121962  Carex vesicaria Lowell Ahart 2014-7-7 19577 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC114980  Carex vulpinoidea J. Sigg 1987-6-5 2954 Butte E side of the Sacramento River just N of Golden State Island. 33 Comment
  CAS-BOT-BC114981  Carex vulpinoidea J. Sigg 1987-6-5 2954 Butte E side of the Sacramento River just N of Golden State Island. 33 Comment
  SEINET10946139  Carex vulpinoidea Vernon H. Oswald, Lowell Ahart 1990-5-26 Oswald 4254 Butte T18N R3E ne/ne/S3, Freshwater Marsh in Riparian Woodland. Oroville Wildlife Area on the east side of the Feather River, Pacific Heights Rd entrance, south of Oroville. Densely cespitose sedge on wet, sandy soil bordering a dredge pond. 32 Comment
  CHSC100882  Carex whitneyi L. P. Janeway; Linus Gog 2008-7-19 9443 Butte High Cascade Range. North side of Scotts John Creek at crossing of Road 26N27 (the connector between Humboldt Road and Humbug Summit Road). Especially along old logging disturbed route that was ripped and allowed to return to natural. 1740 Comment
  CAS-BOT-BC19606  Carex xerophila B. Castro; Gail Kuenster 1989-5-29 307 Butte Ca. 0.1 mile north of junction Coutolenc Road and Skyway. On flat ledge between Coutolenc Road and old SPRR bed. 707 Comment
  JEPS122426  Carex xerophila Peter F. Zika with L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. Northern Sierra Nevada Highland (n SNH) Comment
  CHSC52372  Castilleja affinis J. D. Jokerst 1985-3-31 2189 Butte Top of North Table Mountain at its west edge ca. 1/2 mile NW of Phantom Falls adjacent to an unnamed creek and waterfall. 396 Comment
  CHSC67389  Castilleja affinis James D. Jokerst; R. A. Schlising 1985-4-8 2225 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  SEINET263349 Image available Castilleja affinis Lowell Ahart 1989-5-10 6222 Butte About 1/10 mile NW of the West Branch Bridge across Lake Oroville 290 Comment
  CAS-BOT-BC249592  Castilleja applegatei subsp. pinetorum Rimo Bacigalupi; Richard Hauke; Geo. Bacigalupi, Jr. 1954-7-15 4723 Butte Along sides of Butte Canon [Canyon], on Nimshew [Humbug] Road, 0.5 mi. below Nimshew 701 Comment
  CDA13281  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1996-7-9 13129 Butte Plumas National Forest; W side above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC39496  Castilleja applegatei subsp. pinetorum Loweel Ahart 1983-6-21 4072 Butte Along Bloomer Hill Road, about 3/4 mile west of Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CHSC93993  Castilleja applegatei subsp. pinetorum R. D. Fischer 2004-6-20 765 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants found on slope above creek, west side, downstream of pond. 1371 Comment
  UC1012190  Castilleja applegatei subsp. pinetorum F. W. Pennell and A. A. Heller 1940-6-5 25692 Butte above Pulga (Route 24, along Feather River); Feather River 457 Comment
  SBBG28928  Castilleja arachnoidea E. B. Copeland 1930-7-12 Butte above Jonesville, under N brow of ridge 2100 Comment
  CHSC55418  Castilleja attenuata L. P. Janway 1991-4-30 3920 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of middle Fork Feather River. 426 Comment
  HSC32626  Castilleja attenuata Linda M. Barker 1974-4-20 155 Butte Table Mtn., Central Valley 305 Comment
  CHSC28689  Castilleja campestris subsp. campestris M. S. Taylor 1979-5-6 1999 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3842  Castilleja exserta Susan Carrauthers 1966-3-28 80 Butte Table Mountain. Ca. 6 mi. N. of city of Oroville. Comment
  UC138981  Castilleja exserta E. B. Copeland 1903-4-10 3035 Butte Chico Comment
  CHSC14024  Castilleja lacera D. B. Joley 1967-4-14 18 Butte Ca. 3 feet n of Cohasset Rd. and ca 2.7 mi e of corner Keefer and Cohasset Rds. 152 Comment
  CHSC91456  Castilleja lacera Lowell Ahart 2005-7-13 12146 Butte About 10 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
  UCR188712  Castilleja lacera Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CDA41400  Castilleja miniata T. C. Fuller 1962-7-12 9175 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC115280  Castilleja pruinosa Lowell Ahart 2015-4-30 20119 Butte About 1/4 mile south of Forbestown Reservoir Road, about 2 1/2 miles (air) northeast of Forbestown. 890 Comment
  UC403964  Catalpa speciosa C. H. Shinn 1897-1 Butte Chico Forest Station Comment
  CHSC32664  Ceanothus cuneatus M. S. Taylor; D. Hemphill 1981-3-18 3431 Butte Open serpentine ridge nnw of Sawmill Peak, off Jordan Hill Rd (Ponderosa Way), ca. 1 air mi ne of Magalia. 701 Comment
  HSC59635  Ceanothus cuneatus J. P. Smith 1973-3-22 5933 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  RSA754631  Ceanothus cuneatus var. cuneatus Dylan O. Burge 2007-5-11 DOB 923 c Butte Magalia Reservoir: at roadside on Skyway near gravel pit, 1.1 road miles (1.8 km) N of intersection with Pentz Road, 0.29 km 340 degrees True NNW of Magalia. 700 Comment
  CAS-BOT-BC50779  Ceanothus integerrimus A. A. Heller; H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC50824  Ceanothus integerrimus Lowell Ahart 1987-5-6 5535 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west 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
  CHSC45727  Ceanothus integerrimus Cathy Young 1988-4-24 14 Butte 5.5 mi ne of Chico and 100 yds se of Highway 32. 256 Comment
  UC1070777  Ceanothus integerrimus J. E. Sowder 1933-7-25 119 Butte just s Thompson's; Chico Quad. 1280 Comment
  CAS-BOT-BC50712  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 4844 Butte Near Kunkle Res., about 2 miles south of Paradise. 550 Comment
  POM196019  Ceanothus integerrimus var. macrothyrsus E. B. Copeland 1929-7-14 838 Butte Jonesville. 1650 Comment
  RSA15055  Ceanothus integerrimus var. macrothyrsus Daniel Cleveland 1882-07 s.n. Butte Sultant House. Comment
  RSA25680  Ceanothus integerrimus var. puberulus Carl B. Wolf 1941-7-23 11050 Butte Northern Sierra Nevada, 5 miles below Magalia on Oroville road. 610 Comment
  RSA300948  Ceanothus prostratus D. C. Michener 1982-7-28 4140 Butte Along 32, 3.5 miles NE of Forest Ranch (at Nopel road), Yellow pine forest Comment
  UC725531  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte Comment
  SEINET12210496  Ceanothus prostratus D. G. Bendix 1978-1 9 Butte 0.8 km s of junction of Holmwood Drive with Rosewood Drive, Magalia;3 m e of rock 1.5 m tall 850 Comment
  JEPS113265  Centaurea cyanus Lowell Ahart 2007-5-16 13893 Butte Between the road to Bear Ranch Creek and Highway 70, north of Bear Ranch Creek, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 463 Comment
  CHSC78120  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  CHSC102513  Centaurea solstitialis Lowell Ahart 2009-5-30 15953 Butte Open area west of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  CHSC31966  Centaurea solstitialis S. Posner 1972-10-3 Butte Garden behind Trans Pacific Garden Apartments (725 Nord Ave.), Chico. Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  SEINET10473684  Centaurea solstitialis Mary Susan Taylor 1982-8-16 Taylor 4991 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
  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
  RSA754813  Centaurium muehlenbergii L. Ahart 2009-6-19 15943 Butte N of trail to pond and table, on E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC109599  Centaurium tenuiflorum Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18123 Butte On the south side of the paved park road (Peterson Drive) about 100 yards west of the gate, lower Bidwell Park, Chico. 76 Comment
  UC171477  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte e of Chico (hills near Big Chico creek) Comment
  UC518987  Centromadia fitchii J. Clausen 1932-9-16 657 Butte 20 mi s Chico (between Richvale and Nelson) Comment
  CAS-BOT-BC288525  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CAS-BOT-BC288529  Centromadia fitchii Forman T. McLean 1921-10-18 30 Butte Nelson Comment
  CHSC46470  Centromadia parryi subsp. rudis Vernon Oswald 1989-6-26 3814 Butte Gray Lodge Wildlife Area just s of Rutherford Rd at Parking Area 5. 19 Comment
  CHSC34180  Cerastium fontanum subsp. vulgare L. Ahart 1981-9-15 3160 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  CHSC103751  Cerastium glomeratum Lowell Ahart 2010-5-22 16723 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
  UC1609208  Cerastium glomeratum Vernon H. Oswald and Lowell Ahart 1993-3-24 5238 Butte e. side of Dry Creek Canyon n. of Pentz historical site (on e. side of secondary drainage entering Dry Creek 2 mi. n. of Pentz Rd.) 243 Comment
  CAS-BOT-BC400141  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley 19 Comment
  CDA36293  Ceratophyllum demersum Ed Finley? Jul 1987 Butte Sacramento River, Mile 195, east bank. [Near Hamilton City] 0 Comment
  UCD137763  Ceratophyllum demersum Herbert L. Mason; Verne Grant 1946-8-8 12994 Butte Butte Sink. Sanford Slough on Tule Gun Club. Comment
  CHSC27316  Cercocarpus betuloides var. betuloides T. B. Devine 1977-7-24 435 Butte Growing beside Humbug Road, .5 mi s of Nimshew. 609 Comment
  RSA794797  Cercocarpus betuloides var. betuloides L. Ahart, John Dittes 2009-3-20 15518 Butte On south side of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 200 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park., About 10 miles northeast of Chico. 407 Comment
  POM66468  Chaenactis glabriuscula var. heterocarpha C. C. Bruce 1897-05 1988 Butte Forest- Ranch. Comment
  CHSC11107  Chamaesyce glyptosperma Lowell Ahart 1969-9-9 Butte Peter Ahart Ranch, Honcut. 45 Comment
  OBI59419  Chamaesyce hooveri R. D. Stone & R. E. Buck, R. E. Buck 1987-1 Butte Comment
  CDA38811  Chamaesyce maculata L. Ahart 2011-10-29 17721 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC40362  Chamaesyce maculata Lowell Ahart 1985-7-9 5111 Butte Near a large slab of cement, on a side road 100 yards west of Ponderosa Way, about 1/4 mile north-west of the Ponderosa Dam across the South Fork of the Feather River. 292 Comment
  CHSC616  Chamaesyce maculata R. Carter 1964-6-5 110 Butte 7 mi. E of Oroville at 6120 Woodleaf St. Rt. 3 ft. brom back door beside walk. 243 Comment
  CHSC38440  Chamaesyce nutans Vernon Oswald 1983-7-8 844 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the flood-control weir. 79 Comment
  UC1563263  Chamaesyce nutans unknown 1990-4-30 6650 Butte 1/8 mi n Canyon Creek Bridge (across lake Oroville, on n side of creek, below high water line of the lake); Canyon Creek 228 Comment
  CDA35248  Chamaesyce ocellata T. C. Fuller 1959-10-2 3156 Butte Neal Rd., on road to Paradise, 2 miles north of Hwy 99E. 0 Comment
  CHSC40657  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1985-10-12 5200 Butte On the side of the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CHSC51076  Chamaesyce serpillifolia subsp. serpillifolia Pauleen Broyles 1987-7-19 1084 Butte Ca 4.5 air miles NE of Inskip. Vernal pool. 1755 Comment
  JEPS103264  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2002-10-17 9995 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) NE of Oroville Dam. 227 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
  SEINET10529915  Cheilanthes gracillima Mary Susan Taylor 1983-1-17 Taylor 5214 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  CHSC79987  Chenopodium album L. P. Janeway; B. Castro 1999-6-4 6456 Butte Sacramento Valley. Edge of walnut orchard along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. 30 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  CHSC50360  Chenopodium pratericola Vernon Oswald; Robert McNairn 1990-6-1 4277 Butte Arroyo Chico (section not surveyed). 2815 San Verbena, northeast Chico. 62 Comment
  JEPS114998  Chenopodium 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
  UC179653  Chenopodium pumilio A. A. Heller 1914-7-20 11580 Butte hills 8 mi n Oroville Comment
  JEPS110278  Chenopodium strictum var. glaucophyllum Lowell Ahart 2006-9-28 13368 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
  SEINET10449193  Chimaphila menziesii Mary Susan Taylor 1977-8-17 Taylor 1482 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
  CHSC42903  Chloris virgata Lowell Ahart 1987-7-19 5841 Butte In an almond orchard, along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC87541  Chlorogalum angustifolium R. D. Fischer; Jenny Marr 2004-4-27 137 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at north end of Disk Golf Course, near the top of the north-connecting trail going down toward Guardian Trail. Scattered throughout Disk Golf Course. 381 Comment
  UCD138418  Chlorogalum angustifolium L. Ahart 1977-5-22 1397 Butte Peter Ahart Ranch, Honcut. 15 Comment
  CHSC94048  Chorizanthe polygonoides var. polygonoides R. D. Fischer 2005-5-18 722 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the thin, rocky Tuscan mudlfow of the ridge top at the north end of Humboldt Trail. 426 Comment
  CHSC59042  Cinna latifolia Lowell Ahart 1992-7-26 6836 Butte In a stream bed, on the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC20097  Cinnamomum camphora M. S. Taylor 1975-4-8 453 Butte Children's Playground, e side of Chemistry Bldg, California State University, Chico. 60 Comment
  CHSC26693  Cirsium andersonii M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1498 Butte On jct of Scotts John Rd and Humbug Rd, above Snag Lake. 1828 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
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico Comment
  CAS-BOT-BC228750  Cistanthe umbellata A. A. Heller 1913-6-7 10804 Butte Near Stirling 1074 Comment
  CAS-BOT-BC228751  Cistanthe umbellata A. A. Heller 1915-6-11 11966 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC14037  Clarkia arcuata G. Blomstrom 1973-4-28 25 Butte Along Humbug rd, ca. 4 mi. from Centerville Cemetery. 670 Comment
  CHSC35142  Clarkia arcuata R. Schlising 1980-6-12 3688 Butte NW part of county, 0.25 mi S of Tehama County line on Hwy 32. 1121 Comment
  JEPS93841  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC163578  Clarkia biloba subsp. biloba Mrs. H. C. Cantelow 1940-5-10 4033 Butte 7 mi. E. of Oroville. Old rd. to Bucks Lake Comment
  CHSC27035  Clarkia biloba subsp. brandegeeae Robert A. Schlising 1978-6-25 3293 Butte E of Oroville, 3.4 mi below L. Wyandotte near L. Oroville. Comment
  CAS-BOT-BC164132  Clarkia concinna A. A. Heller 1938-5-28 15114 Butte Along Highway #24, 22 miles east of Oroville Comment
  SFV10911  Clarkia concinna M. L. Vincent 1963-6-8 395 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  CAS-BOT-BC164516  Clarkia gracilis subsp. albicaulis A. A. Heller 1928-6-19 14625 Butte Along the roadside a mile above the Ten Mile House east of Chico Comment
  CHSC42365  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte On roadcuts near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  CHSC84730  Clarkia gracilis subsp. albicaulis L. P. Janeway; John Hunt 2003-6-10 7824 Butte Northern High Sierra Nevada. On front of ridge into Middle Fork Feather River arm of Lake Oroville, opposite mouth of Bean Creek. 351 Comment
  SEINET516158  Clarkia gracilis subsp. albicaulis Vernon H. Oswald 1998-6-24 9238 Butte Hwy. 32 at Crown Pt. Rd. between Chico and Forest Ranch. 573 Comment
  CAS-BOT-BC171878  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-5-14 8663 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC71158  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4679 Butte Along ridge 0.7 mi east-southeast of Flea Mountain; northeast side near the top, 0.3 mi east-southeast of Campbell Meadow. Road cutbank and above. 1158 Comment
  CHSC28705  Clarkia purpurea subsp. purpurea R. A. Schlising 1979-5-30 3423 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  UCD77560  Clarkia purpurea subsp. purpurea Robert E. Preston 2004-4-21 2214 Butte Ca. 4.3 miles NW of Oroville. 51 Comment
  CAS-BOT-BC163647  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardson Springs Comment
  CHSC46386  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 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
  SEINET7073009  Clarkia purpurea subsp. quadrivulnera A. G. Vestal 1963-5-31 s.n. Butte About 8.2 miles north-northwest of Oroville on Route 149. UTM Zone 10, 614599mE, 4384406mN. Coordinate datum: NAD27. Comment
  CAS-BOT-BC164787  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 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
  CHSC59117  Clarkia rhomboidea L. P. Janeway 1991-6-1 3982 Butte West-facing cut-bank of Dark Canyon Road 1.45 mi south of Big Bend Road/Parkhill. Mid-slope of canyon. 472 Comment
  CHSC86953  Clarkia rhomboidea L. P. Janeway; B. Castro 2001-6-17 7183 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy. 1000 Comment
  CHSC56065  Claytonia palustris L. P. Janeway; R. A. Schlising 1988-7-16 3001 Butte Riparian strip along Willow Creek 1/2 mi northwest of Jonesville. 1508 Comment
  SEINET10572695  Claytonia parviflora Mary Susan Taylor 1980-5-8 Taylor 2614 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  SEINET10895984  Claytonia parviflora Mary Susan Taylor 1980-4-1 Taylor 2418 Butte T22N R2E sc sec 25. Riparian Woodland along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 122 Comment
  UC1609466  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
  CHSC42078  Claytonia perfoliata subsp. perfoliata Kim McKirahan 1986-4-11 9 Butte Wurlitzer Addition to Vina Plains Preserve. Pine Creek. 56 Comment
  CAS-BOT-BC443706  Claytonia rubra Lowell Ahart 1984-7-19 4743 Butte About 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City 1500 Comment
  CHSC3749  Claytonia rubra subsp. rubra R. L. Adams 1964-4-12 59 Butte Skyway, 1/2 mi. S. on Elliott Rd. Paradise. Comment
  CHSC56070  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-14 2774 Butte Ewalt Camp; edge of open dry meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  CHSC99570  Clematis lasiantha L. P. Janeway 2008-5-26 9366 Butte Northern Sierra Nevada Foothills. Along south side of Skyway 3.5 km southwest of Paradise and Neal Road. 360 Comment
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  CHSC42975  Clematis ligusticifolia Lowell Ahart 1987-7-3 5753 Butte At the Poe Power House, near the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 280 Comment
  CHSC52816  Clematis ligusticifolia Robert Schlising; M. Banchero, R. Banchero 1979-10-13 3498 Butte Along Sacramento River w of Chico, at slough at end of Sacramento Avenue. Comment
  CHSC45722  Collinsia heterophylla Phillip Scott 1988-4-18 33 Butte Vic. Chico Municipal Golf Course, ca. 3 mi ne of Chico. 91 Comment
  RSA7435  Collinsia heterophylla J. H. Morrison 1932-05 s.n. Butte Deerhaw. Comment
  CHSC114963  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  CHSC1737  Collinsia sparsiflora var. collina M. Roberson 1956-4-9 Butte SW of Paradise along Skyway. 426 Comment
  CHSC58280  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte On the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 2 (air) miles north of Oroville. 76 Comment
  CHSC82509  Collinsia tinctoria Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9732 Butte On a road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  JEPS24250  Collinsia tinctoria Helen-Mar Beard 1960-6-20 Butte 150 yds upstream lower boundary sign of Plumas National Forest (along US Hwy 40-A, at base of grade from Jarbo Gap, not far from Big Bar); Feather River Canyon 426 Comment
  POM42871  Collinsia tinctoria C. C. Bruce 1897-06 1845 Butte Little Chico. Comment
  CHSC45346  Collomia grandiflora Vernon Oswald 1987-7-16 3131 Butte Bull Hill Rd. (Skyway) where it parallels Bull Creek, between Inskip and Butte Meadows. Near the edge of the road. 1487 Comment
  UC478479  Collomia linearis E. B. Copeland 678 Butte Jonesville Comment
  SEINET10496711  Collomia linearis Mary Susan Taylor 1978-6-24 Taylor 1644 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  UCD118256  Collomia tinctoria E. B. Copeland 1931-6-29 679 Butte Jonesville. Along Butte Creek. 1500 Comment
  SEINET10544538  Comandra umbellata subsp. californica Mary Susan Taylor 1978-5-6 Taylor 1588 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  CHSC36290  Conium maculatum M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4357 Butte Graylodge Waterfowl Refuge roadsides, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  JEPS115157  Conyza floribunda Lowell Ahart 2009-11-19 16549 Butte About 30 yards southeast of the gate, about 5 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
  CHSC30738  Corallorhiza maculata M. S. Taylor; R. A. Schlising 1980-7-6 3080 Butte On w side of Hwy 32, ca. 0.3 mi s of Soda Springs Campground. 1127 Comment
  JEPS46150  Corallorhiza maculata Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  RSA0084711  Cordylanthus pilosus subsp. hansenii L. Ahart 2009-8-3 16253 Butte W side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  RSA505434  Cordylanthus tenuis subsp. viscidus R. C. Bacigalupi, Howard Whisler 1957-7-26 6038 Butte On the Humbug Road, 2.2 miles southwest of and below Nimshew, on the eastern canyon side of Butte Creek. 61 Comment
  POM193363  Cornus californica E. B. Copeland 1930-6-25 431 Butte Jonesville. 1500 Comment
  CHSC3825  Cornus nuttallii R. L. Adams 1964-4-2 73 Butte Highway 32 S. side rd. 1 mi. E. Forest Ranch. 20 yds. from highway. Comment
  CHSC449  Cornus nuttallii R. M. Staley 1953-7-18 Butte Lovelock. Comment
  CHSC81486  Cornus nuttallii D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  UC1122780  Cornus nuttallii P. L. Johannsen 1936-7-17 932 Butte 1/2 mi. s. Butte Meadows (Plot 2); Lassen Nat'l Forest, Paynes Creek Quad. Comment
  UC725377  Cornus sericea subsp. sericea A. A. Heller 1938-7-20 15282 Butte 7 mi. e. on the Humbug Rd. Chaparral (upper end of Snag Lake) 1524 Comment
  UC1122799  Cornus sessilis J. E. Sowder 1935-7-6 108 Butte 2 mi. n.e. Cohassett; Chico Quad. 944 Comment
  CDA4037  Coronilla varia L. Ahart 2004-6-22 11121 Butte On the west side of Doe Mill Road, about 1 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. Comment
  RSA178624  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows Comment
  SEINET3152046  Corydalis caseana subsp. caseana M. Ownbey, G. B. Ownbey 1946-6-24 2936 Butte 1.3 mi. below Jonesville Comment
  CHSC82274  Cotoneaster lacteus M. MacArthur 1968-6-16 332 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CHSC100488  Cotoneaster pannosus Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15420 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  UC1594678  Cotoneaster pannosus Lowell Ahart 1991-12-30 6735 Butte along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East southwest of Oroville Dam. 213 Comment
  SEINET10871334  Cotoneaster pannosus Lowell Ahart 1991-5-31 Ahart 6658 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd. East, southwest of Oroville Dam. Foothill Woodland. T19N R4E c/s/S2.f 213 Comment
  CHSC44466  Cotula australis Lowell Ahart 1988-5-15 6004 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  SEINET3450921  Cotula coronopifolia Unknown 2003-6-23 10310 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  JEPS103436  Crassula aquatica Lowell Ahart 2002-4-15 9490 Butte Just above the water on the E side of a canal bank, on the W side of Faris Road, 3 miles W of West Biggs Gridley Road, ca 3 miles (air) SW of Biggs. 24 Comment
  JEPS122154  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte About 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC113221  Crassula connata Lowell Ahart 2014-5-2 19425 Butte On the north side of a small drainage, about one mile (air) northwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 8 miles (air) north of Oroville. 391 Comment
  CHSC30890  Crassula connata J. D. Jokerst 1979-4-2 1172 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  JEPS87192  Crassula connata Lowell Ahart 1992-4-7 6742 Butte e side of Biggs Princeton Rd. and w. side of Southern Pacific R.R. in Biggs 30 Comment
  CHSC28752  Crassula tillaea J. D. Jokerst 1979-3-18 173 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico. 365 Comment
  CHSC46742  Crassula tillaea Lowell Ahart 1974-4-7 340 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  SEINET10973378  Crassula tillaea Mary Susan Taylor 1978-4-14 Taylor 1554 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
  CHSC103025  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 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. 269 Comment
  CHSC41985  Crypsis schoenoides Lowell Ahart 1986-11-9 5435 Butte Below the high water line of Lake Oroville, at the boat launch area off the Oroville Quincy Highway, near Canyon Creek, about 12 miles north-east of Oroville. 269 Comment
  CAS-BOT-BC190168  Crypsis vaginiflora Lowell Ahart 1986-11-14 5467 Butte About 0.1 mile south of the clay burrow for Oakville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  UC1564785  Cryptantha affinis V. Oswald and L. Ahart 1989-6-27 3820 Butte ca 3.3 (air) mi e Jonesville (ridge e of Scotts John Creek) 2042 Comment
  UC196315  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  UCD80136  Cryptantha intermedia CNPS SN Foothill Team 2006-5-23 SNNR 0789 a Butte BLM Parcels near Paradise. 520 Comment
  UC726521  Cryptantha torreyana A. A. Heller 1917-7-26 12818 Butte Butte Meadows 1402 Comment
  CHSC28377  Cryptogramma acrostichoides M. S. Taylor; J. Jokerst 1979-7-21 2151 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  CHSC58865  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  CHSC69441  Cupressus macnabiana Lowell Ahart 1997-9-6 7884 Butte At the McNab Cypress grove, near the steel tower power line, along the side of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  UCD133530  Cupressus macnabiana Mike Mitzel 1977-2-13 3 Butte ca. 0.5 mi W of the West Branch River and 4 mi N of Paradise. 762 Comment
  SEINET10531457  Cupressus macnabiana Mary Susan Taylor 1981-4-8 Taylor 3503 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  SEINET10966023  Cupressus macnabiana John G. Lemmon 1895-12-2 Lemmon s.n. 1895 Butte Magnalia Comment
  CHSC54526  Cuscuta californica var. breviflora Vernon H. Oswald; Lowell Ahart 1991-8-19 4838 Butte East end of coon Hollow Rd (Forest Rd 26N74), near its junction with Forest Fd. 25N15 (to Philbrook Reservoir). 1706 Comment
  CHSC58908  Cuscuta californica var. breviflora Lowell Ahart 1992-7-21 6821 Butte On the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CDA14092  Cuscuta californica var. californica G. F. Hrusa, T. D. Wilfred 1997-7-3 13977 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  JEPS110256  Cuscuta californica var. californica Lowell Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 30 Comment
  RSA4473  Cuscuta californica var. papillosa E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  CHSC112043  Cuscuta campestris Lowell Ahart 2012-8-22 18423 Butte On Xanthium strumarium. On dry disturbed red soil, on the south side of the Railroad Signal Box, east side of the Railroad, about 20 yards south of Cental House Road, about 2 miles (air) northwest of Honcut. 35 Comment
  CDA7735  Cuscuta japonica M. Brown 2007-11-27 PDR# 1328505 Butte Oroville, 3355 Fallbrook. 0 Comment
  RSA0118626  Cuscuta occidentalis Lowell Ahart 2013-9-26 19065 Butte Northwest of large wash, about 1/2 mile southeast of the Honcut Cemetery, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  UCD126346  Cuscuta subinclusa A. A. Heller 1914-7-22 11588 Butte near West Branch. 1066 Comment
  CHSC90809  Cycloloma atriplicifolium Lowell Ahart 2005-5-2 11780 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
  CAS-BOT-BC190246  Cynodon dactylon Lowell Ahart 1980-8-16 2585 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SFV3108  Cynoglossum grande M. L. Vincent 1961-3-30 23 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  JEPS119863  Cynosurus echinatus Lowell Ahart 2012-5-14 18067 Butte On the south side of the paved road, west of the horse trail, about 1/2 mile west of Peterson Drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. Comment
  JEPS110333  Cyperus bipartitus Lowell Ahart 2006-10-8 13439 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC66364  Cyperus difformis Vernon H. Oswald 1996-6-20 7832 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Marsh at NE corner of Tract 3.1, Sanctuary II. 33 Comment
  CHSC83007  Cyperus difformis Lowell Ahart 2002-9-7 9930 Butte On the east side of Cherokee Road, north of the Thermalito Diversion Canal, on the west side of the water purification pond, about 1 mile north of Oroville. 130 Comment
  CAS-BOT-BC114602  Cyperus eragrostis Ira L. Wiggins 1959-9-20 34640 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC68380  Cyperus eragrostis L. P. Janeway 1987-5-7 2024 Butte Table Mountain Road where it is right at the base of the railroad fill and overlooking Thermalito Forebay. 91 Comment
  JEPS110535  Cyperus eragrostis Lowell Ahart 2006-10-28 13516 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 33 Comment
  SEINET9751966 Image available Cyperus eragrostis Richard Carter 2006-7-30 Butte N Chico, 0.3 mi N jct. Nord Hwy and Esplanade, between Esplanade and Hwy CA 99 Comment
  CHSC69730  Cyperus erythrorhizos Lowell Ahart 1997-10-24 7944 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  UCD139948  Cyperus flavicomus Whitney Brim-DeForest 2013-8-16 s.n. Butte Biggs Rice Station, NNW of the town of Biggs. In rice field located just on the north side of West Hamilton Road, ca. 1.74 miles west of Hwy 99. 29 Comment
  RSA0060845  Cyperus fuscus Lowell A. 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. 69 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
  SBBG128797  Cyperus iria L. Ahart 2012-10-5 18476 Butte S edge of parking area at the restroom, end of rd to the Larkin Rd Boat Launch Area, ca. 0.25 mi W of Larking Rd, ca. 2 mi (air) SW of the Oroville Airport 28 Comment
  CHSC68399  Cyperus niger L. P. Janeway 1988-5-30 2715 Butte Canyon of Big Chico Creek; upper Bidwell Park 3.8 mi along Upper Park Road from Wildwood Avenue. Seep above Salmon Hole. 161 Comment
  CDA38968  Cyperus niger L. Ahart 2000-8-23 8662 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  SEINET10467153  Cyperus niger var. capitatus Lowell Ahart 1983-9-17 Ahart 4432 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  SD405  Cyperus squarrosus E. B. Copeland 1931-7-17 Butte Jonesville; abundant on drying bottoms of vernal pools. 1700 Comment
  SEINET7582975 Image available Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CAS-BOT-BC114206  Cyperus strigosus Lowell Ahart 1974-11-9 s.n. Butte Edge of rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CDA38893  Cyperus strigosus L. Ahart 2000-8-23 8661 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CHSC33910  Cypripedium fasciculatum M. S. Taylor 1981-5-27 3803 Butte W side of Paradise Lake, ca 1/2 way between Butte Cr ... Field redacted by CHSC, contact the data manager for more information 792 Comment
  CAS-BOT-BC68043  Cystopteris fragilis Mary E. Wall 1920-3-28 s.n. Butte Las Plumas Comment
  SEINET10535613  Cystopteris fragilis Mary Susan Taylor 1979-7-21 Taylor 2148 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  UC142471  Damasonium californicum Mrs. R. M. Austin May 1896 20 Butte Sacramento R. Comment
  SBBG128060  Danthonia californica L. Ahart 2010-9-21 17230 Butte N side of a poor dirt rd, ca. 1 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1899 Comment
  UC1594704  Danthonia californica Lowell Ahart 1992-7-21 6801 Butte about 2 air mi ne Philbrook Reservoir (high sides of snow lake on s side of Hollow); Coon Hollow 1737 Comment
  SEINET10899327  Delphinium Mary Susan Taylor 1981-4-8 Taylor 3508 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  JEPS108547  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge 1127 Comment
  CHSC117345  Delphinium hansenii subsp. hansenii B. Castro; Sabrina Bell, Robin Carter 2015-5-26 2047 Butte Sacramento Valley. Ca 2 air mi NE of Oroville and 1.5 mi W of Oroville Dam, off S edge of Thermalito Diversion Pool. Ca 0.1 mi S of the Brad Freeman Trail along a connector to the Dan Beebe trail as it winds around an inlet (long narrow pond). About 3 ft up from E side of Trail on W-facing slope in small opening withing Foothill Woodland. 80 Comment
  RSA755748  Delphinium hansenii subsp. hansenii L. Ahart 2009-5-30 15805 Butte West side of Guardians Trail, about 100 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile west of the intersection of Highway 32 and Ten Mile House Road. 441 Comment
  CAS-BOT-BC10143  Delphinium menziesii Lowell Ahart 1969-4-9 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  CHSC56873  Delphinium nudicaule P. D. Nelson 1979-3-17 Butte Ca 150 ft s of Bidwell Park Road at Salmon Hole, ca 9 mi e of California State University, Chico. And ca 30 ft n of Big Chico Creek. 152 Comment
  CHSC57139  Delphinium nudicaule J. B. Locey 1975-5-6 19 Butte Ca. 50 yds e of Humbug Road, ca. 1 mi n of Centerville. 182 Comment
  CHSC82594  Delphinium patens subsp. patens Samantha Mackey Hillaire 2002-3-18 306 Butte Table Mountain, on a cliff overlooking Beatson Hollow next to a waterfall. 359 Comment
  CHSC93486  Delphinium patens subsp. patens Lowell Ahart 2006-5-8 12610 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CAS-BOT-BC17017  Delphinium variegatum Lowell Ahart 1980-5-4 2185 Butte Thermalito. 65 Comment
  CHSC52120  Delphinium variegatum R. E. Alumbaugh 1984-4-26 1 Butte 6.4 mi e of hwy 99 and ca. 50 yds n of Skyway, 8.5 mi e of Chico. 387 Comment
  RSA718042  Delphinium variegatum R. D. Fischer 2004-4-4 802 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the E side Hwy 32 along Guardian Trail between the Pine and Bloodypin Trails 335 Comment
  CHSC3879  Delphinium variegatum subsp. variegatum Gary Dutton 1966-4-14 212 Butte Found in Upper Bidwell Park at Gun and Rod Club. Comment
  CHSC77436  Dendromecon rigida Laura Bogni 1997-4-5 25 Butte West side of Coutelec Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Resevoir. Magalia grove. 670 Comment
  SFV1356  Dendromecon rigida B. Fuller 1961-4-28 s. n. Butte Sierra Nevada Paradise. Stearns and Harrison Roads. 535 Comment
  CHSC44453  Deschampsia danthonioides Lowell Ahart 1988-5-30 6024 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA424685  Deschampsia danthonioides Aaron Liston, M. A. Blumler 1987-4-24 658 -8 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  SD116538  Deschampsia danthonioides B. Ertter, Jeff Strachan 1980-5-5 3255 Butte Peter Ahart Ranch; ca 1 I(c) miles northest of Honcut between Oroville and Marysville; in pasture north of house 29 Comment
  UC203843  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte 8 mi. n. Oroville Comment
  UCD80539  Deschampsia danthonioides CNPS SN Foothill Team 2005-4-12 SNFN 0077 b Butte City of Chico, Doe Mill Meadowfoam Preserve, about 200 m SE of the end of Warfield Street (i.e. where the street crosses an old unusable bridge over a diversion canal). 87 Comment
  UCD62781  Deschampsia danthonioides var. gracilis P. B. Kennedy 1914-5-1 s.n. Butte Chico. Comment
  CHSC44385  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
  JEPS106236  Dianthus armeria subsp. armeria Lowell Ahart 2004-7-11 11223 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
  UC120094  Dicentra formosa Mrs. R. M. Austin 1896-1 230 Butte Colby Comment
  UC1362282  Dicentra formosa Kingsley R. Stern 1964-4-21 2059 Butte ca 0.5 mi e Poe Power Dam (banks of Heinz Creek, s side of canyon of North Fork of Feather River); Pulga Quad., Heinz Creek Comment
  RSA21538  Dicentra formosa subsp. formosa Carl B. Wolf 1937-5-17 8724 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, W side of Big Butte Creek 732 Comment
  SEINET10508818  Dichanthelium lanuginosum Mary Susan Taylor 1979-10-12 Taylor 2244 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC116960  Dichelostemma capitatum Matthew Forster 2013-3-5 Butte Found along 14 Mile House Rd. 472 Comment
  CHSC2098  Dichelostemma capitatum subsp. capitatum P. Delaplane 1965-3-30 65 Butte On Table Mtn. Ca. 13 mi NNW of Oroville, on W. side of Oroville Cherokee Rd. 609 Comment
  CHSC32721  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1981-4-8 3488 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds Jct, ca. 3 air mi s of Harbo Gap on Hwy 70. 426 Comment
  CHSC3633  Dichelostemma capitatum subsp. capitatum Alice L. Stoll 1966-2-14 2 Butte 7 miles N. E. of First and Main Streets, Chico. Approximately 50 yds. W. of road, Upper Bidwell Park. Comment
  CHSC2092  Dichelostemma multiflorum N. Maxwell 1929-3-28 Butte Richardson Springs. 274 Comment
  SEINET12053818  Dichelostemma multiflorum Unknown 1936-1 13250 Butte along Mud Creek near Chico Comment
  CAS-BOT-BC502511  Dichelostemma volubile Lowell Ahart 1977-5-22 s.n. Butte Peter Ahart Ranch, Honcut; Along North Honcut Creek. Foothill Woodland. 50 Comment
  UCD139266  Dichelostemma volubile Don Blosser 1970-5-9 12 Butte on Skyline Blvd. near Skyline Way, 5 miles east of Oroville. Comment
  CHSC31657  Dichondra donelliana L. Ahart 1975-5-3 747 Butte Near North Honcut Creek. On Peter Ahart Ranch, Honcut. 45 Comment
  CHSC45211  Digitaria sanguinalis Lowell Ahart 1976-7-4 1152 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
  RSA29936  Digitaria sanguinalis I. L. Wiggins 1928-9-9 3340 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  SACT000981  Digitaria sanguinalis Herbert Copeland 1923-1 Butte Comment
  UCD63970  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  UCD163049  Diospyros virginiana var. virginiana D. O. Burge 2015-9-21 1832 Butte Helltown area, Butte Creek Canyon, roadside on Centerville Road. 260 Comment
  CHSC24984  Diplacus angustatus D. M. Raimondi 1975-4-22 18 Butte 7 mi ne Chico on Cohasset Ridge. 304 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
  SEINET8340789  Diplacus grandiflorus Lowell Ahart 2006-5-10 12617 Butte Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, abotu 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CHSC100801  Diplacus jepsonii R. A. Schlising; L. Janeway 1988-7-1 4548 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CHSC44805  Diplacus kelloggii R. Banchero 1980-6-5 187 Butte At the jct of Hwy 70 and Pinkston Canyon Rd, ca 6.4 mi SW of the jct of the Feather River and Hwy 70. 633 Comment
  CHSC62788  Diplacus kelloggii L. P. Janeway 1993-5-20 4349 Butte Plumas National Forest. Swayne Hill. South-facing road cutbank overlooking lower French Creek. 746 Comment
  SEINET14453096  Diplacus longiflorus Richard J. Shaw 1982-1 3043 Butte Highway 70, Feather River Canyon, 1/2 mile east of Pulga Dam; ca. 2000 ft. Comment
  CHSC44716  Diplacus torreyi R. Banchero 1980-6-23 260 Butte Along Eagle Gulch Rd 1.4 mi N of its jct with Laporte Rd, 2.0 mi SW of Sly Reservoir. 1059 Comment
  CAS-BOT-BC154039  Diplacus torreyi F. W. Peirson 1926-6-21 6778 Butte High ridge east of Butte Meadow, Humboldt Road Comment
  CHSC110049  Diplacus tricolor Lowell Ahart 2012-5-2 17962 Butte In a small vernal pool, about 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 89 Comment
  CHSC45523  Dipsacus fullonum Lowell Ahart 1988-10-28 6191 Butte On the north side of Lower Honcut Road, about 1/2 mile west of the Southern Pacific Railroad, about 2 miles west of Honcut. 30 Comment
  CHSC38811  Distichlis spicata Vernon Oswald 1983-6-2 612 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the flood plain of the creek. 207 Comment
  CHSC106283  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley. Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. 60 Comment
  CAS-BOT-BC136232  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  CHSC3563  Dodecatheon clevelandii subsp. patulum R. D. Briggs 1966-3-21 39 Butte Along Durham-Pentz Rd., 5 miles SSE of downtown Chico and 1 mile west of hwy US 99E. 57 Comment
  CHSC31413  Dodecatheon hendersonii Herb Allan McLane 1980-3-3 1 Butte Plumas National Forest, MDM, 1 mi sw of Ponderosa Dam. 402 Comment
  UCD118847  Dodecatheon hendersonii Greg C. Halcomb 1978-3-18 4 Butte ca. 100 yds s of Butte Creek and 500 yds w of Covered Bridge, 6.4 mi ese Chico. 109 Comment
  RSA21491  Downingia bicornuta C. B. Wolf 1937-5-14 8673 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. 46 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
  SEINET3450898  Downingia cuspidata Unknown 2003-5-28 10227 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  RSA424713  Downingia cuspidata Aaron Liston, M. Blumler 1987-4-24 658 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  UC890622  Downingia cuspidata Elmer I. Applegate 1928-4-27 5378 Butte between Richvale and Biggs Comment
  UC195392  Downingia insignis A. A. Heller 1914-5-30 11468 Butte about 6 mi nw Chico; Sacramento Valley Comment
  POM305786  Downingia ornatissima C. C. Bruce 1897-04 1903 Butte [No location data on label] Comment
  JEPS119712  Downingia ornatissima var. ornatissima Lowell Ahart 2012-5-2 17965 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  JEPS14465  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-20 1151 Butte 10 mi sw Oroville Comment
  JEPS124171  Draba verna var. aestivalis Lowell Ahart 2015-3-14 19945 Butte About 400 yards north of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  JEPS124180  Draba verna var. aestivalis Lowell Ahart 2015-2-26 19941 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  UCD123991  Drosera rotundifolia Barry Rice 2011-7-20 BR 110709 Butte Mallory Meadow. 1350 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CAS-BOT-BC527352  Drymocallis glandulosa var. reflexa Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC27945  Dryopteris arguta M. S. Taylor 1979-3-20 1949 Butte Ca. 1 mile n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  CHSC90008  Dryopteris arguta Charles Crannell 1991-4-23 20 Butte 50 ft south of where Honey Run Road crosses Butte Creek. In gully. 103 Comment
  CHSC93796  Dryopteris arguta Lowell Ahart 2006-5-19 12634 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 405 Comment
  SEINET10470596  Dryopteris arguta Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4207 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 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
  CHSC42960  Dysphania ambrosioides Lowell Ahart 1987-7-3 5755 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET11934612  Dysphania anthelmintica Unknown 1981-1 3224 Butte a little W of Gray Lodge Waterfowl Mgmt HQ, ca 0.75 mi W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CHSC112198  Dysphania botrys Lowell Ahart 2013-4-20 18561 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  JEPS124253  Dysphania botrys Lowell Ahart 2015-10-26 20594 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC113149  Dysphania pumilio Lowell Ahart 2013-11-13 19233 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC76276  Dysphania pumilio Lowell Ahart 1999-9-21 8279 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
  CHSC83055  Dysphania pumilio Lowell Ahart 2002-10-17 9990 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  JEPS120036  Echinochloa crus-galli Lowell Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  SEINET10509319  Echinochloa crus-galli Lowell Ahart 1984-9-17 Ahart 4792 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET3928604  Echinochloa muricata Lowell Ahart 1984-9-17 4792 Butte Peter Ahart Ranch, ca. 2.3 miles north and 0.3 miles east of Honcut, ca. 12 miles S of Oroville.; 0 50 Comment
  SEINET10561343  Echinochloa muricata A. Arthur Heller 1914-5-19 Heller 11418 Butte Hills 8 miles north of Oroville. Comment
  SBBG120012  Elaeagnus angustifolia L. Ahart 2006-8-29 13239 Butte ca. 100 yards N of the Headquarters, Gray Lodge Wildlife Area 20 Comment
  CHSC115332  Elatine Lowell Ahart 2015-4-24 20073 Butte Normal size plants, on dry to damp bare dark soil, on the west side of the dirt road. 22 Comment
  JEPS123832  Elatine Lowell Ahart 2015-4-24 20067 Butte About 1 mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS127222  Elatine Lowell Ahart 2016-8-5 21259 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET10447962  Elatine californica Lowell Ahart 1984-5-8 Ahart 4597 Butte T17N R4E. Ca. 2.5 mi N and 1.4 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 40 m. 40 Comment
  CHSC42127  Elatine heterandra Lowell Ahart 1984-5-8 4598 Butte About 2-1/2 miles north and 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC78180  Eleocharis acicularis Lowell Ahart 2000-5-27 8407 Butte Boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west end of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  SEINET10971927  Eleocharis acicularis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4728 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CDA38954  Eleocharis acicularis var. acicularis L. Ahart 2000-9-15 8690 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  CHSC55611  Eleocharis atropurpurea L. P. Janeway 1986-9-20 1886 Butte Inside the bend in the road at the junction of Chico Butte City Hwy and Road 48. 28 Comment
  JEPS98317  Eleocharis bella Lowell Ahart 2000-7-11 8577 Butte 4 air mi NE of Feather Falls (100 yds N 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
  UC398895  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville 1500 Comment
  JEPS110400  Eleocharis bolanderi Lowell Ahart 2006-8-15 13177 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CAS-BOT-BC113373  Eleocharis engelmannii Lowell Ahart 1974-11-9 s.n. Butte In rice field, Peter Ahart ranch, Honcut 45 Comment
  CHSC39542  Eleocharis engelmannii Lowell Ahart 1983-6-6 4027 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut. 50 Comment
  CAS-BOT-BC112790  Eleocharis macrostachya Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC112791  Eleocharis macrostachya Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC68433  Eleocharis macrostachya L. P. Janeway 1986-10-19 1938 Butte Along small creek just west of Clear Creek, on north side of Durham-Pentz Road. On Butte College agricultural land. 82 Comment
  SD427  Eleocharis macrostachya E. B. Copeland 1931-7-15 Butte Jonesville; in and beside the Lily Pond, a permanent pool. 533 Comment
  CHSC78194  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte On the wet side of a large wash, northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  SEINET13710023  Eleocharis pachycarpa Lowell William Ahart, Lowell William Ahart 2000-1 8387 Butte 13 Mi. SE of Oroville, 4 Mi. NE of Honcut (T17N, R4E, sec 12, SE 1/4) 180 Ft. 55 Comment
  CAS-BOT-BC113142  Eleocharis pachycarpa John Thomas Howell 1954-5-18 29840 Butte 1.5 mi NNE of Buena Vista 91 Comment
  RSA500437  Eleocharis quadrangulata Vernon H. Oswald 1989-6-29 3836 Butte Vandergrift Lake located on the W side of Cana Pine Creek Road just S of the Tehama Co. line. 55 Comment
  SEINET3441890  Eleocharis suksdorfiana Unknown 2000-7-5 8552 Butte Stirling City, Stirling City, about 4.5 miles north, about 1 mile south of Inskip, about 100 yards west of the skyway 1310 Comment
  CHSC31636  Elodea canadensis L. Ahart 1977-11-22 1610 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC113280  Elymus caput-medusae Lowell Ahart; John Dittes 2014-5-16 19491 Butte Small drainage on the north side of the poor dirt road, about 200 yards southwest of the lone oak tree, about 1/2 mile east of the end of Lyon Cattle Road, about 3 miles (air) northeast of Los Molinos. 99 Comment
  CHSC44920  Elymus glaucus subsp. jepsonii Lowell Ahart 1988-7-31 6165 Butte South of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  JEPS119886  Epilobium campestre Lowell Ahart 2012-6-5 18166 Butte North of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC102957  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2009-7-9 16003 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SBBG127998  Epilobium ciliatum subsp. ciliatum L. Ahart 2009-7-9 16003 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  JEPS108964  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 437 Comment
  UC1122517  Epilobium ciliatum subsp. glandulosum P. L. Johannsen 1936-7-17 940 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  SEINET3449320  Epilobium densiflorum Unknown 2003-6-30 10330 Butte Forbestown, Forbestown, about 2 air miles northwest, north side of Ponderosa Way, about 1.5 road miles southwest of the Ponderosa Dam 400 Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC70345  Epilobium oregonense R. A. Schlising 1981-7-25 4167 Butte N part of county, E of Inskip, at Jones Meadow. At pond margin. 1842 Comment
  UC1564778  Epilobium oregonense V. Oswald and L. Ahart 1989-6-27 3824 Butte Butte Creek House Humbug Rd, Butte Creek (ca 3.3 air mi se of Jonesville, along creek) 1767 Comment
  CHSC42750  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 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
  CHSC51033  Eragrostis cilianensis Lowell Ahart 1990-7-15 6556 Butte Along a stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UC1563256  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  JEPS116076  Eragrostis pectinacea var. pectinacea Lowell Ahart 2009-8-13 16278 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SEINET256565 Image available Eragrostis pilosa Lowell Ahart 5202 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 302 Comment
  CHSC45106  Eragrostis pilosa var. pilosa Lowell Ahart 1988-8-10 6169 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99. 60 Comment
  JEPS95983  Eragrostis pilosa var. pilosa Lowell Ahart 1999-10-28 8307 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UCD65667  Eragrostis pilosa var. pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Comment
  CAS-BOT-BC174177  Eremogone cliftonii Lewis Rose 1967-1-1 69075 Butte Rodgers Flat, Feather River 609 Comment
  CAS-BOT-BC174178  Eremogone cliftonii M. S. Taylor 1981-5-21 3793 Butte N side of Mayaro Rd, ca. 0.5 mi n of Mayaro, ca. 2 mi n of Pulga on Feather River Hwy 70 609 Comment
  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
  SEINET10537447  Eremogone cliftonii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4246 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  JEPS87197  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  UC1594625  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte about 3/4 mi s Rocky Point (at end of the Enterprise Boat Launch Ramp) 259 Comment
  CAS-BOT-BC298292  Ericameria nauseosa var. speciosa H. E. Brown 1896-11-15 46 Butte Near Clear Creek 53 Comment
  CHSC100519  Erigeron canadensis Lowell Ahart 2008-11-4 15396 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville. 263 Comment
  CHSC110126  Erigeron divergens L. P. Janeway 2012-3-21 10796 Butte Northern Sierra Nevada Foothills. Top of a flattened knoll on east side of Thermalito Diversion Pool between the Pool and the rail-road tracks, about 0.4 km north-northeast of the Diversion Dam (Feather River; Oroville). Knoll flattened in mining rock long ago? 91 Comment
  UC426985  Erigeron inornatus var. inornatus E. B. Copeland 1930-8-6 490 Butte Jonesville 1550 Comment
  POM193098  Erigeron lassenianus E. B. Copeland 1929-7-17 489 Butte Above Jonesville 2000 Comment
  CHSC44904  Erigeron petrophilus var. sierrensis Lowell Ahart 1988-7-28 6138 Butte At the north side of the dam at Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC295952  Erigeron philadelphicus Lowell Ahart 1985-7-24 5155 Butte Below the high water line of the Forbestown Res., about 50 yards south of the Generator, about 4 1/2 miles north-east of Forbestown 350 Comment
  CHSC38458  Eriodictyon californicum Vernon Oswald 1983-5-14 480 Butte Upper Bidwell Park, Chico, on the north rim ca. 1000 ft e of the power lines. 256 Comment
  NY280796  Eriogonum heracleoides var. heracleoides C. L. Hitchcock 1960-6-12 22002 Butte 1 mi. N of Craters of the Moon National Monument. Comment
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Jul 31 2012
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  UCSC010541  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 A Butte Along both sides of the dirt road to the Forbestown Reservoir, near Woodleaf Creek, about 3/4 mile southwest of the Forbestown Reservoir Dam, about 2 air miles north and 3 1/2 miles east of Forbestown. 762 Comment
  CHSC11923  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte Jonesville. Along Butte Creek. 1500 Comment
  UC1032186  Eriogonum nudum var. pubiflorum P. L. Johannsen 1936-7-17 935 Butte 2 1/2 mi sse Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC30075  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-14 3910 Butte Near Philbrook Reservoir, 2.4 mi E of junction with Skyway, on Philbrook Road. Comment
  SEINET11934607  Eriogonum spergulinum var. reddingianum L. P. Janeway, Janeway, C. A. 1986-1 1857 Butte Jonesville quad (15'), near mdw of upper Willow creek. Logging landing of soft soil 1951 Comment
  CAS-BOT-BC267909  Eriogonum umbellatum V. Oswald; L. Ahart 1988-7-29 3645 Butte Ca. 5 mi. (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC69427  Eriogonum umbellatum var. ahartii Lowel Ahart 1997-8-19 7870 Butte On the south side of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles (air) northeast of Feather Falls. 1280 Comment
  RSA0049736  Eriogonum umbellatum var. ahartii Dean Wm. Taylor 2013-7-31 21389 Butte Jordon Hill Road, ca. 1 air mile directly east and across the West Branch Feather River canyon from Magalia 701 Comment
  SEINET10479572  Eriogonum umbellatum var. polyanthum Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5113 Butte About 8 miles north-east of Feather Falls. Comment
  JEPS48320  Eriogonum ursinum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2693 Butte Pulga Bridge, west side North Fork of Feather River, Pulga Bridge 472 Comment
  UC600499  Eriogonum ursinum E. B. Copeland 1931-7-12 Butte ridge between Jones Creek and Willow Creek; Jonesville 1700 Comment
  CAS-BOT-BC262342  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of North Fork of Feather River 182 Comment
  CHSC51897  Eriogonum vimineum L. P. Janeway 1988-7-2 2965 Butte Near the road into French Creek 0.6 mi S of Coyote Gap. Shaley SE-facing ridge outcrop. 1219 Comment
  UCD101521  Eriogonum vimineum John Thomas Howell 1955-6-15 30511 Butte West Branch of Feather River. 182 Comment
  CDA13725  Eriophyllum lanatum var. grandiflorum G. F. Hrusa, T. D. Wilfred 1997-6-27 13903 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  CHSC48156  Eriophyllum lanatum var. grandiflorum Vernon Oswald 1983-6-22 749 Butte On the s side of Humboldt Rd. (to Butte Meadows) 3.3 mi n-e of Calif. Hwy. 32. 1386 Comment
  POM53922  Eriophyllum lanatum var. grandiflorum Copeland 1903-5-30 3275 Butte Chico. Comment
  RSA21662  Eriophyllum lanatum var. grandiflorum C. B. Wolf 1937-5-18 8732 Butte Northern Sierra Nevada. 8.7 miles below Magalia on Oroville road 366 Comment
  SFV3892  Eriophyllum lanatum var. grandiflorum M. L. Vincent 1960-9-8 94 Butte Sierra Nevada Paradise. In lot across street from 5330 Harrison Road. 525 Comment
  UC614533  Eriophyllum lanatum var. grandiflorum L. Constance, J. L. Morrison 1938-4-30 2176 Butte 5 mi se Oroville; Feather River 152 Comment
  JEPS127005  Eryngium castrense Lowell Ahart 2016-5-24 20849 Butte About 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CAS-BOT-BC211104  Eryngium pinnatisectum John Thomas Howell 1962-6-15 37419 Butte 5 miles west of Oroville Comment
  CHSC20876  Erythranthe bicolor Robert A. Schlising 1963-6-7 2619 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC42224  Erythranthe bicolor S. C. Henderson 1986-4-15 1 Butte Ca. 50 m s of Butte Creek and 0.1 km w of Covered Bridge, 10.2 km ese of Chico. 120 Comment
  CHSC20489  Erythranthe cardinalis M. S. Taylor 1975-6-25 798 Butte Along Mud Creek, ca. 1 mi n of Richardson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  CAS-BOT-BC153866  Erythranthe glaucescens A. A. Heller; H. E. Brown 1902-5-6 5461 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC43164  Erythranthe glaucescens R. A. Schlising 1980-6-30 3803 Butte Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. Comment
  CHSC77495  Erythranthe glaucescens Anna Pinsky 1997-4-24 13 Butte Chico, Upper Bidwell Park, Salmon Hole, above Chico Creek, on rock outcrop. 30 Comment
  SEINET8340802  Erythranthe glaucescens Sandra C. Morey 1978-4-10 17 Butte highway 32, ca. 7.5 mi e of junction with Highway 99 at Chico. 515 Comment
  CHSC9273  Erythranthe guttata D. C. Burns 1971-4-3 117 Butte Abundant on s side of highway 70, ca. 8.2 mi n of Oroville, (1.2 mi from end of Oroville freeway). 82 Comment
  CHSC10826  Erythronium multiscapideum Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  CHSC38878  Erythronium multiscapideum Vernon Oswald 1983-3-13 158 Butte Upper Bidwell Park, Chico, 100 ft. s of Upper Park Rd. at the w entrance to Brown's Hole (2.6 mi e of the power lines). 231 Comment
  CAS-BOT-BC504520  Erythronium multiscapideum W. J. Follett 1965-3-24 s.n. Butte Feather River highway, 0.6 mi. above Pulga Bridge Comment
  CAS-BOT-BC504521  Erythronium multiscapideum Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  SEINET10528913  Erythronium multiscapideum Zierenberg 1983-4-15 ZIERENBERG 24 Butte Just s of Magalia Reservoir Dam. USGS East Paradise quadrangle. UTM grid coordinates 214080 zone 10. Serpentine soil. 2160 feet. 658 Comment
  SEINET10469556  Erythronium purpurascens Mary Susan Taylor 1981-4-28 Taylor 3561 Butte T22N R5E nw sec 2. Pulga SW quad. S side of 23N28.2 (Rd to Big Bar Mt from Coyote Gap), 0.9 mi SW of its jct with Four Trees Rd at Coyote Gap, ca. 4 air mi E of Pulga. 4200 ft. 1280 Comment
  CHSC37283  Eschscholzia californica M. S. Taylor 1982-5-2 4388 Butte Pulga serpentine oucrops on n side of Hwy 70 at Pulga bridge, ca 20 mi ne of Oroville. 487 Comment
  SEINET10937887  Eschscholzia californica Mary Susan Taylor 1982-5-2 Taylor 4388 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  SD60226  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte In a field near the Hooker Oak, east of Chico in the valley oak belt. Comment
  UC2026857  Eucalyptus Lowell Ahart 2012-10-12 18484 Butte On the south side of the paved park road, 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
  UC202227  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte summit above Jonesville 2133 Comment
  UC1609453  Euonymus occidentalis var. occidentalis Vernon H. Oswald and Lowell Ahart 1993-6-22 5564 Butte ca. 0.25 mi. s. Diversion Dam (Long Ravine w. of Stirling City, along Hendricks Canal) 950 Comment
  UCD144333  Euonymus occidentalis var. occidentalis G. F. Hrusa; T. D. Wilfred 1996-7-9 13115 Butte Plumas National Forest. On Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. 1175 Comment
  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
  SEINET10841031  Euphorbia glyptosperma Mary Susan Taylor 1980-6-29 Taylor 2988 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CAS-BOT-BC202420  Euphorbia ocellata Lowell Ahart 1989-5-23 6256 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
  CAS-BOT-BC202421  Euphorbia ocellata John Thomas Howell 1959-9-19 34613 Butte 5 miles west of Oroville 45 Comment
  CHSC52366  Festuca arundinacea J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1547 Butte In the Grey Lodge Waterfowl Management Area, roadside. Comment
  CHSC92550  Festuca californica var. californica L. P. Janeway 2005-4-6 8359 Butte Northern High Sierra Nevada. Plumas National Forest; southwestern non-serpentine spur ridge at south end of Rocky Ridge, about 2.2 km east of north end of Concow Reservoir. 860 Comment
  CHSC50439  Festuca elmeri Vernon Oswald; Lowell Ahart 1990-6-27 4325 Butte Jordan Creek-Marble Creek Rd (23N60) between Spoon Ravine and Marble Creek, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) northeast of Junction House (site). 1109 Comment
  SEINET10508610  Festuca grayi Lowell Ahart 1985-5-15 Ahart 4969 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
  UCD18733  Festuca microstachys Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 26 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site, UTMs: 10S0624439; 4384482. Comment
  CHSC113277  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CDA13878  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-7 13736 Butte Sierra Nevada; Bottom of Little Butte Creek canyon above Magalia Reservioir, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC107921  Festuca occidentalis L. P. Janeway 2011-7-21 10518 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. Mostly along the outer road edge, but also on the cut-bank. 1067 Comment
  CHSC42919  Festuca occidentalis Lowell Ahart 1987-7-8 5801 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC49548  Festuca occidentalis Vernon Oswald 1983-6-22 730 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC61540  Festuca rubra Lowell Ahart 1993-7-6 7064 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1586629  Festuca subuliflora Lowell Ahart 1991-6-19 6660 Butte about 1.5 mi sw Forbestown Reservoir (along the s side of the dirt road that goes to the Forbestown Reservoir) 609 Comment
  CHSC42748  Ficus carica Lowell Ahart 1987-8-8 5857 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC34194  Fimbristylis autumnalis R. A. Schlising 1979-10-13 3502 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC48844  Fragaria vesca Vernon Oswald 1984-4-9 1121 Butte Feather Falls Trail, near the trail head at the end of Bryant Ravine Rd. 755 Comment
  CAS-BOT-BC62901  Frangula californica subsp. tomentella John Thomas Howell 1959-9-20 34701 Butte Feather River Highway, 5.5 mi. below West Branch Bridge. Comment
  CAS-BOT-BC62902  Frangula californica subsp. tomentella John Thomas Howell 1955-6-14 30446 Butte Magalia. 731 Comment
  CAS-BOT-BC62935  Frangula californica subsp. tomentella Gladys L. Smith 1976-5-18 s.n. Butte Lower Feather River Canyon, right side of State Route 70 just before first new turnout. Comment
  SEINET10969447  Frangula purshiana Mary Susan Taylor 1981-5-21 Taylor 3758 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CHSC33998  Fraxinus americana Carl Pejsa 1980-4-12 51 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC223383  Fraxinus dipetala Mrs. C. C. Bruce 1897-4-1 s.n. Butte Humboldt road Comment
  CHSC3019  Fraxinus latifolia Carl Pejsa 1958-4-19 53 Butte Bidwell Park Forestry Station. Comment
  UCR219101  Fraxinus latifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15570 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  UCD116288  Fremontodendron californicum J. I. Mallory 1967-5-17 286 Butte 1 3/4 miles south-southeast of summit of Bloomer Hill, 10 miles northeast of Oroville. 655 Comment
  CHSC28967  Fritillaria affinis J. D. Jokerst 1980-2-24 450 Butte E branch of Mud Cr ca 0.5 mi E of Richardsons Springs. 243 Comment
  CHSC33574  Fritillaria eastwoodiae M. S. Taylor; L. Hanson 1981-4-21 3552 Butte Ca. 500 ft S of creek crossing road, E side of spur rd (to Old Utah Mine) ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 792 Comment
  SEINET10905360  Fritillaria recurva Mary Susan Taylor 1981-5-21 Taylor 3784 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
  CHSC3430  Galium aparine Judy Potter 1966-3-28 207 Butte On Table Mountain. Comment
  CHSC37264  Galium aparine L. Ahart 1982-6-15 3569 Butte Ca. 1.5 mi E of Camp 18, ca. 8 mi E of Feather Falls. 1000 Comment
  SEINET10500616  Galium aparine Mary Susan Taylor 1973-1 Taylor 46 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  POM193332  Galium bifolium E. B. Copeland 1930-6-28 473 Butte Jonesville. 1650 Comment
  CHSC65586  Galium bolanderi L. P. Janeway 1995-6-1 4770 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  UC1143083  Galium bolanderi J. E. Sowder 1933-8-15 130 Butte 1 1/2 mi w mouth of Flea Valley Creek (on point of ridge); Bidwell Bar Quadrangle Comment
  NY131444  Galium grayanum var. grayanum A. A. Heller 1914-8-7 11668 Butte Summit east of Jonesville. 2133.6 Comment
  UC600426  Galium grayanum var. grayanum E. B. Copeland 1931-6-19 Butte at The Summit Jonesville Comment
  SEINET12318317  Galium nuttallii D. G. Bendix 1978-1 8 Butte Butte Creek Canyon 5.4 km E of junction of Honey Run Rd with Skyway, 10 km E of Chico, ca 10 m NE of 100 Comment
  CHSC116732  Galium parisiense Lowell Ahart 2016-5-25 20876 Butte On north side of the water ditch, about 200 yards south of La Porte Road, about 1/4 miles southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 mile (air) northeast of Honcut. 44 Comment
  CHSC28690  Galium parisiense M. S. Taylor 1979-5-6 2000 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS98713  Galium tricornutum Lowell Ahart 2000-5-13 8353 Butte 5 air miles SW of Oroville (margin of Thermalito Afterbay, W side of access road to the boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville airport) 42 Comment
  SEINET10500640  Galium tricornutum Lowell Ahart 1991-5-8 Ahart 6649 Butte Along a small wash, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  POM193329  Galium trifidum E. B. Copeland 1930-7-16 476 Butte Jonesville. 1500 Comment
  UC1523191  Galium trifidum M. S. Taylor and L. Ahart 1981-8-16 4196 Butte 3 mi s Philbrook Reservoir (ca 6 mi ne of Stirling City); Pulga NW Quadrangle, Jones Meadow 1828 Comment
  CHSC108322  Galium trifidum var. pacificum Lowell Ahart 2011-8-23 17651 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. 1133 Comment
  JEPS117919  Galium triflorum L. P. Janeway 2008-6-22 9430 Butte Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River North Fork Feather River (2.7 air km east of Pulga Bridge (Hwy 70) over); Northern High Sierra Nevada 823 Comment
  SD4919  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville, in damp meadow 1500 Comment
  CHSC42391  Gamochaeta argyrinea Lowell Ahart 1987-6-9 5738 Butte On the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC50650  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CAS-BOT-BC303381  Gamochaeta ustulata Lowell Ahart 1980-5-25 2326 Butte Along Swedes Flat Rd, near Bangor 320 Comment
  POM183175  Garrya fremontii H. F. Copeland 1930-7-26 1338 Butte Neighborhood of Jonesville, by Government Trail. 1677 Comment
  SD3490  Garrya fremontii E. B. Copeland 1932-7-27 Butte Jonesville 1650 Comment
  CHSC109651  Gastridium phleoides Lowell Ahart 2012-5-12 18036 Butte On the sides of Bloody Rim Trail, about 20 yards east of South Rim Trail, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 7-3/8 miles (air) northeast of Chico. 220 Comment
  UCD66716  Gastridium phleoides C. C. Parry 1887-1 Butte Chico. Comment
  CHSC37444  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-7-3 4130 Butte E of Philbrook Reservoir; at trailside. 1828 Comment
  HSC96902  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte About 100 yards NE of the buildings in Butte Creek House Meadow, about 3 mi. NE of Snag Lake, about 7 mi. E of Butte Meadows 1772 Comment
  CHSC37449  Gayophytum humile R. A. Schlising; R. Banchero, D. Ikeda 1980-6-26 3787 Butte 3.2 miles se of Butte Meadows on Bull Hill Road (= Skyway). In small meadows along Bull Creek. 1511 Comment
  RSA718074  Gayophytum racemosum L. Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1525 Comment
  CAS-BOT-BC208058  Genista monspessulana Lowell Ahart 1980-5-25 2334 Butte Near Old Forbestown 1000 Comment
  CHSC11983  Gentianella amarella subsp. acuta E. B. Copeland 1930-8-4 441 Butte Jonesville. 1500 Comment
  UCD169896  Geranium purpureum 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
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC4356  Gilia capitata subsp. mediomontana R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  CHSC45947  Gilia tricolor Lowell Ahart 1976-4-14 1063 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC52104  Gilia tricolor Carol A. Bordin 1983-4-11 11 Butte Ca. 0.5 mi e of Hwy 99 on Durham Pentz Rd, n of Falager Ct, n Durham Pentz Rd, ca. 4 mi e of Durham. 54 Comment
  SEINET10939134  Githopsis diffusa subsp. robusta Lowell Ahart 1982-6-15 Ahart 3574 Butte On a lava cap, about 1.5 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC266585  Githopsis pulchella A. A. Heller 1914-5-22 11423 Butte Near Richardson Springs Comment
  CAS-BOT-BC266589  Githopsis pulchella Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC55484  Githopsis specularioides L. P. Janeway 1991-5-2 3924 Butte 1 1/3 mi east of Palermo-Honcut Highway, 3 mi north of Honcut. 48 Comment
  CHSC60971  Githopsis specularioides Lowell Ahart 1993-6-20 6997 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  SEINET10972188  Githopsis specularioides Lowell Ahart 1973-5-6 Ahart s.n. Butte Swedes Flat road, near Bangor 457 Comment
  CHSC63707  Glinus lotoides Lowell Ahart 1994-10-8 7554 Butte On the bottom of a large drying pond, on the south side of the shooting area, about 1 1/2 miles south of the Oroville Airport, south-west of Oroville. 45 Comment
  UC1562276  Glinus lotoides Lowell Ahart 1990-7-2 6537 Butte near McCabe Creek (below the high water line of Lake Oroville, about 1/2 mi sw of the Enterprise Bridge across Lake Oroville) 243 Comment
  SEINET260329 Image available Glinus lotoides Lowell Ahart 1986-1 5437 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Rd, ca 6 mi SW of Oroville 37 Comment
  JEPS121950  Glyceria borealis Lowell Ahart 2014-7-7 19585 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC303824  Gnaphalium M. S. Taylor 1977-11-12 1536 Butte In Devil's Kitchen, Upper Bidwell Park, ca 1 mile from end of road, Chico 243 Comment
  CHSC38352  Gnaphalium luteoalbum Vernon Oswald 1983-4-25 391 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 353 Comment
  CAS-BOT-BC302466  Gnaphalium palustre Mrs. C. C. Bruce 1897-6-1 2110 Butte Little Chico Comment
  CHSC104813  Gnaphalium palustre Lowell Ahart 2010-6-9 16772 Butte On dry bare soil, in poor dirt road tracks, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC41871  Gnaphalium palustre Lowell Ahart 1986-11-9 5450 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
  CHSC78168  Gratiola ebracteata Lowell Ahart 2000-6-6 8450 Butte On the sides of an old gold mining pit, just southeast of where the dirt road crosses Oregon Gulch creek, about 1/4 mile northeast of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville Dam. 304 Comment
  JEPS98418  Gratiola ebracteata Lowell Ahart 2000-6-6 8450 Butte 5 mi (air) E of Oroville Dam (sides of an old gold mining pit, SE of where the dirt road crosses Oregon Gulch Creek, 1/4 mi NE of cemetery, 1 1/2 mi S of Crystal Hill) 304 Comment
  CHSC115411  Grindelia camporum M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  CAS-BOT-BC305283  Grindelia hirsutula Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  JEPS102325  Gypsophila elegans Lowell Ahart 2001-4-15 8726 Butte 4 air miles SW of Gridley (N side of dirt road E of the large pump, S side of Evans-Reimer Rd, 1 mi E of Pennington Rd, Gray Lodge Waterfowl Management Area) Comment
  JEPS95865  Hainardia cylindrica Lowell Ahart 1999-5-21 8067 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC80896  Hastingsia alba Dona Kingsford 1966-5-1 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  UC177600  Hastingsia alba H. M. Hall 1914-7-22 9769 Butte along Willow Creek (Jonesville); , Jonesville 1554 Comment
  CHSC35665  Hedypnois cretica R. E. Preston 1982-4-22 253 Butte Ca. 1/2 mi ne of Line Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  CAS-BOT-BC306290  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles south of Cherokee on road to Oroville Comment
  CAS-BOT-BC306291  Hedypnois cretica Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC309403  Helenium puberulum A. A. Heller 1914-8-13 11681 Butte Hills 8 miles north of Oroville Comment
  JEPS120538  Helenium puberulum B. Castro, Margie Graham 2006-9-7 1609 Butte Sacramento Valley. Ca 1.75 mi W of Hwy 99, 1.3 mi ENE of Richvale and ca 0.4 mi N of Richvale Hwy in Cherokee Canal. On W side of canal ~ 20 ft in from toe of W levee. Comment
  CHSC95076  Helianthella californica var. nevadensis L. P. Janeway 2006-6-25 8700 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  CHSC43614  Helianthus annuus Vernon Oswald 1987-7-23 3150 Butte W side of Hwy 99, 0.7 mi se of the Butte-Tehama county line. Along edge of roadside ditch. 60 Comment
  CHSC47656  Helianthus bolanderi Lowell Ahart 1989-9-17 6387 Butte On the west side of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC134875  Helianthus bolanderi H. E. Brown Nov 15 1896-Nov 30 1896 126 Butte near Clear Creek 53 Comment
  CHSC44378  Helminthotheca echioides Lowell Ahart 1988-6-23 6060 Butte Along the east side of Wyandotte Miners Ranch Road, about 1/2 mile south of Olive Highway, about 5 miles south-east of Oroville. 259 Comment
  UCD169354  Helminthotheca echioides Lowell Ahart 2012-6-21 18221 Butte About 15 yards east of the Freeway, south of Big Chico Creek, Lower Bidwell Park Chico. 62 Comment
  CHSC33891  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 2 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  JEPS108568  Hemizonella minima L. P. Janeway 2005-5-29 8407 Butte Northern High Sierra Nevada. Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km south of Kimshew Point. On southeast-facing side of ridge top 1317 Comment
  CHSC31567  Hemizonia congesta subsp. luzulifolia L. Ahart 1974-10-5 658 Butte Near Honcut. 45 Comment
  CHSC38361  Hemizonia congesta subsp. luzulifolia Vernon Oswald 1983-7-28 939 Butte Upper Bidwell Park, Chico, ca. 200 ft n of Upper Park Rd. at Diversion Dam. 128 Comment
  CHSC50797  Hemizonia congesta subsp. luzulifolia Vernon Oswald; Mary Bailey 1990-8-2 4426 Butte Nance Canyon just north of the power transmission lines, ca. 1 mi north-northeast of the Butte County Sanitary Landfill on Neal Rd. 97 Comment
  CAS-BOT-BC310160  Hesperevax caulescens Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  JEPS47390  Hesperevax caulescens L. R. Heckard, and Robert Ornduff, Hal Weidman 1966-4-27 1473 Butte field along US Hwy 99 about 11 mi se Chico Comment
  CHSC45497  Hesperocnide tenella Lowell Ahart 1974-4-14 399 Butte Peter Ahart Ranch, about 1 mile north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC44283  Hesperolinon micranthum Vernon Oswald; Bruce Baldwin 1988-6-16 3387 Butte Upper Bidwell Park, Chico, on the slope just s of the Police Pistol Range. 106 Comment
  JEPS98429  Hesperolinon micranthum Lowell Ahart 2000-5-31 8427 Butte 3 mi SE of Paradise (just W of Lake Oroville, about 400 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 286 Comment
  SD8553  Hesperolinon micranthum R. M. Austin 1883-1 Butte Butte Co. Comment
  UC1212237  Hesperolinon micranthum Freed W. Hoffman 1951-5-1 3777 Butte along highway from Chico to Paradise Comment
  RSA91387  Hesperolinon micranthum F. W. Peirson 1926-6-21 6779 Butte Butte Meadow, Humboldt Road. Comment
  UCD19080  Heteranthera rotundifolia Carl M. Wick 1983-7-1 s.n. Butte State Hwy 162, ca. 3 mi. west of State Hwy 99, then 1 mi. south along Cherokee Canal on Lattemore Ranch. Comment
  UC1925781  Heteranthera rotundifolia unknown 1983-8-16 Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi W of Hwy 99, 955 Butte City Hwy (Hwy 162). Comment
  CHSC34816  Heterocodon rariflorum M. S. Taylor 1980-4-27 2548 Butte Ca 1 mi s of Nimshew. ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC42134  Heterocodon rariflorum Lowell Ahart 1973-5-29 247 Butte Near a small wash, Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCSB63791  Heterocodon rariflorum Ahart, Lowell 1997-8-1 Butte Damp rocky dark soil, near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. Uncommon, inconspicuous. Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  SEINET11892045  Heteromeles arbutifolia Unknown 1975-1 790 Butte Along NorthHoncut Creek. Peter Ahart Ranch, Honcut 46 Comment
  SBBG17116  Heuchera micrantha M. Vincent 1962-4-18 209 Butte near Feather River at Hells Town Comment
  CHSC110454  Heuchera micrantha var. erubescens L. P. Janeway 2013-5-19 11109 Butte Northern High Sierra Nevada. Southeast-facing slope of inner canyon of North Fork Feather River +/- overlooking Cresta, along Camp Creek Road 1.7 road km northeast of Dixie Road. 670 Comment
  JEPS94304  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in snow Meadow, about 1/4 mile east of Table Mountain, about 8 air miles northeast of Stirling City. 1524 Comment
  UC202672  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC312342  Hieracium albiflorum H. F. Copeland 1920-7-11 77 Butte Beside Butte Creek 1828 Comment
  SD8927  Hieracium albiflorum Mrs. R. M. Austin 1883-1 Butte Comment
  SEINET10475086  Hieracium albiflorum Mary Susan Taylor 1975-9-12 Taylor 905 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  CDA13236  Hieracium gracile G. F. Hrusa, T. D. Wilfred 1996-7-8 13083 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  CHSC34043  Holodiscus discolor L. Ahart 1981-7-7 2931 Butte Near a small dry stream, near the dirt rd to the Forbestown Reservoir, 1/2 mi w of the Forbestown Reservoir, ne of Forbestown. 750 Comment
  SEINET10528776  Hookera californica A. Arthur Heller 1914-5-11 Heller 11389 Butte Hills 8 miles northof Oroville. Comment
  CHSC31718  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 758 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC86111  Horkelia californica subsp. dissita L. P. Janeway; John Hunt 2003-4-22 7761 Butte Northern Sierra Nevada Foothills. Just below high water line of Lake Oroville on south side of Bloomer Point Campground (west side of the lake); 4.7 km southwest of Bloomer Hill. Large meadow that extends above and below high water line. 271 Comment
  SEINET10483361  Horkelia elata Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4647 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
  CHSC45196  Horkelia fusca subsp. parviflora Lowell Ahart 1984-7-19 4753 Butte Near the edges of a meadow, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 air miles north-east of Stirling City. 1371 Comment
  CAS-BOT-BC144062  Horkelia parryi Volney Rattan 1880-5-1 s.n. Butte Brownsville Comment
  CHSC43123  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-26 2297 Butte At Rag Dump. 1173 Comment
  CHSC99565  Horkelia tridentata subsp. tridentata L. P. Janeway 2008-5-26 9387 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  CHSC116223  Horkelia tridentata var. tridentata Lowell Ahart 2015-6-16 20239 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CAS-BOT-BC536265  Horkelia tridentata var. tridentata Javier Penalosa 1962-6-18 2470 Butte Near confluence of French and Peavine Creeks 640 Comment
  CHSC96052  Hosackia oblongifolia var. oblongifolia L. P. Janeway 2006-8-12 8840 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. 1682 Comment
  JEPS120934  Hosackia stipularis var. ottleyi Lowell Ahart 2013-5-18 18699 Butte About 50 yards SW of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  JEPS124302  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  SFV2584  Hydrocotyle verticillata M. L. Vincent 1960-7-19 113 Butte Sierra Nevada 4 miles south of Paradise at small reservoir off Pentz Road. 450 Comment
  HSC104003  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte About 15 air mi. NE of Oroville, ~ 2 air mi. SE of Brush Creek, ~ 3/8 mi. NE of Little Bald Rock, SE edge of large open bare granite area 975 Comment
  CHSC4615  Hypericum concinnum R. Carter 1966-6-15 428 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd.; growing on bank above road in rather dry soil. 883 Comment
  CHSC46359  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC410224  Hypericum concinnum Mrs. J. H. Morrison 1932-5-22 s.n. Butte Durham Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  CHSC101693  Hypochaeris glabra Lowell Ahart 2009-4-26 15612 Butte Upper Bidwell Park, on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC30304  Hypochaeris glabra M. S. Taylor 1980-5-27 2682 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC30889  Hypochaeris glabra J. D. Jokerst 1979-4-6 1178 Butte Adjacent to intermittant creek. Top of North Table Mt, ca. 200 m north of Cherokee Rd where it intersects the E edge of mountain. 396 Comment
  CHSC34705  Hypochaeris glabra M. S. Taylor 1981-5-29 3809 Butte Both sides of 22N31, Chino Ridge, ca. 2 mi nw of its jct with French Creek, ca. 4 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC45686  Hypochaeris radicata Vernon Oswald 1985-4-29 1728 Butte Bald Rock Rd. 0.3 mi e of Oroville-Quincy Hwy. 640 Comment
  CHSC43859  Idahoa scapigera Vernon Oswald 1988-3-27 3263 Butte At the falls on Mud Creek n of the buildings at Richardson Springs. 228 Comment
  JEPS119778  Ilex aquifolium Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 -A Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC879867  Ipomopsis aggregata A. A. Heller 1917-7-29 12857 Butte summit above Jonesville 2133 Comment
  UC176159  Iris hartwegii A. A. Heller 1913-6-7 10803 Butte near Stirling 1074 Comment
  UC143451  Iris macrosiphon Mrs. R. M. Austin Mar 1896 13 Butte Little Chico Creek Comment
  SEINET3876030  Iris macrosiphon D. W. McNeal, Todd McIntyre 1989-4-18 3369 Butte Shady oak woodland on the margin of a barren serpentine outcrop above Lunt Rd., 0.4 mi. North of Highway #70.; 0 Comment
  JEPS127565  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approximated 0.25 miles north of its intersection with Ponderosa Way. Forbestown 7.5' Quad. Comment
  JEPS104157  Isoetes howellii Lowell Ahart 2003-5-28 10233 Butte On the bottom of Hendricks ditch, ca 1 3/4 mi w of the iron gate and fence, w of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS94717  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte about 7 air mi n Oroville (vernal pool about 1/4 mi n of lone oak tree, about 1/2 mi n of the cow chute along Cherokke Rd.); North Table Mountain 403 Comment
  CAS-BOT-BC61876  Isoetes nuttallii Lowell Ahart 1989-5-23 6268 Butte in Dutch Ravine, about 1/8 mile north of Swedes Flat Road, about 1 1/2 miles east of the Oroville Bangor Highway, 426 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  CHSC84205  Isolepis setacea Lowell Ahart 2003-6-30 10337 Butte In the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir, about 3 miles (air) north of Forbestown. 491 Comment
  HSC72758  Jensia rammii M. S. Taylor 1980-5-27 2672 Butte On Big Bald Rock, 3 mi. E of Lake Madrone. 998 Comment
  CAS-BOT-BC340245  Jensia rammii Lowell Ahart 1980-4-30 2141 Butte Along Hurleton-Swedes Flat Road 500 Comment
  CHSC102742  Juglans californica var. hindsii Lowell Ahart 2009-8-3 16252 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intrsection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  UC1950053  Juglans californica var. hindsii Lowell Ahart 2009-7-3 15988 Butte 10 yards south 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
  JEPS119902  Juglans hindsii Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwell Park, Chico. Comment
  CHSC30433  Juncus acuminatus NEH Prouty 1980-4-27 154 Butte Richvale vernal pools. 33 Comment
  CHSC34202  Juncus acuminatus J. D. Jokerst; L. Ahart 1981-9-26 1487 Butte Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico E bank Sacramento River. Comment
  RSA742780  Juncus acuminatus L. Ahart 2008-5-30 14802 Butte Below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10.5 miles (air) northeast of Oroville. Comment
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May 4 2010
  CHSC96946  Juncus balticus subsp. ater Lowell Ahart 2007-7-8 14266 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  JEPS113865  Juncus brachyphyllus Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville 972 Comment
  CHSC37378  Juncus bufonius var. bufonius R. A. Schlising 1982-4-24 4231 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Aftebay. Comment
  CHSC38117  Juncus bufonius var. bufonius R. L. Ondricek-Fallscheer 1983-5-10 171 Butte SW of driveway in front of house on plateau at sw end of Flatiron Ridge; ca. 3 1/2 mi wsw of Paradise. 182 Comment
  CHSC56895  Juncus bufonius var. bufonius L. P. Janeway; B. Castro 1991-4-9 3870 Butte 1/2 mi west of Dunstone Drive, 1 mi south of Wyandotte. 176 Comment
  CHSC61516  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte Large vernal pool, on the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CHSC6158  Juncus bufonius var. bufonius E. Parreno 1968-5-19 69 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  CHSC96891  Juncus bufonius var. bufonius Lowell Ahart 2007-6-12 14082 A Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  CHSC31838  Juncus bufonius var. congestus L. Ahart 1978-5-1 1682 Butte Peter Ahart Ranch, Honcut. Bottom of a small swale in a farmed field. 50 Comment
  CHSC38918  Juncus bufonius var. congestus Vernon Oswald 1983-6-7 648 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC43791  Juncus bufonius var. congestus Vernon Oswald 1984-4-22 1161 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near Parking Area O e of Salmon Hole. 182 Comment
  CHSC111388  Juncus capitatus Lowell Ahart 2012-5-2 17976 Butte About 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  JEPS105998  Juncus capitatus Lowell Ahart 2004-4-4 10718 Butte On the fire guard, about 5 yards east of Wilber Road, north of the high hill crossed by Wilber Road, south of the wash, pasture, about 3 miles (air) west of Thermalito 48 Comment
  SBBG119954  Juncus capitatus L. Ahart 2004-4-4 10718 Butte ca. 5 yards E of Wilber Rd, N of the high hill crossed by Wilber Rd, S of the wash, ca. 3 air mi W of Thermalito 48 Comment
  SEINET226470  Juncus capitatus B. Ertter, JL Strachan; L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Marysville and Oroville 30 Comment
  RSA596234  Juncus cyperoides L. Ahart 1981-7-24 2999 Butte About 0.5 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 700 Comment
  CHSC50808  Juncus dubius Vernon Oswald; Lowell Ahart 1990-7-31 4419 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Cocow. Along the creek at the foot of the meadow. 1097 Comment
  CHSC73491  Juncus dubius B. Castro; L. Gehrung 1995-7-26 597 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In center of moist meadow E of road. 1143 Comment
  CHSC41304  Juncus effusus subsp. pacificus S. C. Morey 1983-7-22 540 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  HSC104028  Juncus effusus subsp. pacificus L. Ahart 2008-7-23 15152 Butte About 11 mi. E of Oroville, ~ 0.75 mi. SW of the Enterprise Bridge, on the east side of McCabe Creek, below the high water line of Lake Oroville 243 Comment
  CHSC94340  Juncus ensifolius Lowell Ahart 2006-7-25 13058 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC96910  Juncus ensifolius Lowell Ahart 2007-7-15 14303 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 50 yards north of the home, about 1/4 miles (air) southwest of Bloomer Hill. 808 Comment
  CHSC40351  Juncus exiguus Lowell Ahart 1985-6-30 5086 Butte 10 yards south of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC41911  Juncus howellii Lowell Ahart 1983-8-16 4294 Butte Along the banks of a small stream that flows into Butte Creek, about 1 mile east of Butte Meadows. 1450 Comment
  JEPS45835  Juncus howellii Duncan Dunning 1921-7-29 Butte Butte Meadows Comment
  SEINET11787184  Juncus howellii Unknown 1983-1 4294 Butte along stream that flows into Butte Creek, 1 mi E of Butte Meadows 1450 Comment
  HSC100752  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Small spring on S side of road and wet meadow on N side, S side of a good forest road, 0.5 mi. N of Lost Creek Reservoir Dam, and 4.5 (air) mi. N of Clipper Mills. 1267 Comment
  UCD169927  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte About 1/2 mile north of the Lost Creek Reservoir Dam, about 4 1/2 miles (air) north of Clipper Mills. Along the wet road gutter, on the south side of a good forest road. 1266 Comment
  JEPS104273  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10042 Butte On the high water line of vernal pools, pasture field, ca 130 yd south of the tall Digger Pine on the south edge of Beatson Hollow, ca 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 302 Comment
  JEPS110152  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12581 Butte On the bottom of a tire track through a marshy area, about 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parkin area, North Table Mountain, about 7 miles (air) north of Oroville 377 Comment
  CHSC46465  Juncus nevadensis V. Oswald; L. Ahart 1989-6-27 3827 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In a large meadow along Butte Creek. 1767 Comment
  CHSC47566  Juncus nevadensis Lowell Ahart 1981-8-15 3043 Butte On the bottom of Snag Lake, on the north side of the lake, about 10 miles north of Inskip. 1524 Comment
  CHSC99748  Juncus nevadensis var. nevadensis Lowell Ahart 2008-7-23 15153 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 243 Comment
  JEPS98471  Juncus occidentalis Lowell Ahart 2000-6-29 8535 Butte 5 air miles E of Magalia (W side of Concow Road at Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  JEPS94884  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS98489  Juncus orthophyllus Lowell Ahart 2000-6-29 8536 Butte 5 air miles E of Magalia (E side of Flea Meadow, 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  JEPS98490  Juncus orthophyllus Lowell Ahart 2000-6-27 8522 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  UC600812  Juncus orthophyllus H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  CHSC28618  Juncus patens M. S. Taylor 1979-10-12 2243 Butte Big Chico Creek, at end of Upper Bidwell Park, ca. 10 mi ne of Chico. 243 Comment
  JEPS113768  Juncus patens Lowell Ahart 2007-7-15 14305 Butte Along the east side of Encina Grande Road (Bloomer Hill Road), about 20 yards southeast of the home, about 1/4 miles (air) southwest of Bloomer Hill 808 Comment
  CHSC102623  Juncus tenuis Lowell Ahart 2009-6-18 15910 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcutt Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  JEPS127245  Juncus tenuis Lowell Ahart 2016-5-24 20870 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  CHSC96542  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville. 955 Comment
  JEPS113273  Juncus triformis Lowell Ahart 2007-5-22 13902 Butte Northeast of Little Bald Rock, about 300 yards east of Bean Creek road, about 16 miles (air) northeast of Oroville 1009 Comment
  CHSC29053  Juncus uncialis R. A. Schlising 1980-4-2 3551 Butte Richvale vernal pools, 1/4 miles S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  CHSC47577  Juncus uncialis Lowell Ahart 1983-4-10 3931 Butte On the sides of small vernal pools, near the steel power line, about 1/2 mile northeast of Highway 99 and Pentz Road. 60 Comment
  CHSC102731  Juncus usitatus Lowell Ahart 2009-7-4 15999 Butte On the side of a pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  CHSC97112  Juncus usitatus Lowell Ahart 2007-7-31 14401 Butte Along a drain ditch, on the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 Comment
  CHSC97203  Juncus usitatus Lowell Ahart 2007-7-27 14397 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  JEPS113747  Juncus usitatus Lowell Ahart 2007-7-11 14291 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
  CAS-BOT-BC235675  Keckiella breviflora var. glabrisepala James L. Reveal 1988-6-3 6993 Butte Crown Point Road, 0.5 mile northeast of California Highway 32 between Ten Mile Trail and Fourteen Mile House Road, about 12 miles northeast of Chico 609 Comment
  CAS-BOT-BC235679  Keckiella breviflora var. glabrisepala Mrs. J. H. Morrison 1932-5-15 s.n. Butte Durham Comment
  CHSC101700  Keckiella breviflora var. glabrisepala Lowell Ahart 2009-4-26 15610 Butte Upper Bidwell Park, on the west side of Highway 32, west of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 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
  CHSC43146  Kickxia elatine R. A. Schlising 1979-10-14 3512 Butte Along Sacramento River w of Chico, n of Chico Landing Site in Bidwell River State Park. Comment
  HSC97347  Kickxia elatine J. P. Smith, J. O. Sawyer 2007-9-2 12420 Butte Parking lot at observation platform at the Llano Seco Unit of the Upper Butte Basin Wildlife Area along Seven Mile Rd. Comment
  CHSC38825  Koeleria phleoides Vernon Oswald 1983-4-20 349 Butte Upper Bidwell Park, Chico, ca. 50 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). Along a pathway. 91 Comment
  CAS-BOT-BC274276  Lachnagrostis filiformis Earle T. Gammon 1959-7-6 s.n. Butte Rice Exp. Station, Biggs Comment
  CHSC102617  Lactuca serriola Lowell Ahart 2009-7-9 16024 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC340530  Lactuca serriola Lowell Ahart 1983-9-19 4457 Butte About 1/8 mile south of the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC340531  Lactuca serriola Lowell Ahart 1982-9-12 3800 Butte On the banks of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut 50 Comment
  CHSC25273  Lagophylla glandulosa M. S. Taylor 1977-6-27 1396 Butte Butte College campus, ca. 15 mi s of Chico. 30 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
  SEINET10474763  Lagophylla glandulosa Mary Susan Taylor 1980-8-15 Taylor 3251 Butte T20N R4E sw sec 32, Oroville quad. Ca. 0.5 mi N of Oroville, on W side of Cherokee Rd, on the SE slope of South Table Mt. With E. Pierce. 244 Comment
  CHSC50314  Lagophylla ramosissima subsp. ramosissima Vernon Oswald; Mary Bailey 1990-5-19 4221 Butte First side branch of Nance Canyon northeast of the power transmission lines, its head at 'The Narrows', ca. 1.2 mile northeast of the Butte County Sanitary Landfill on Neal Rd, south of Chico. 137 Comment
  CHSC30513  Lamarckia aurea R. Banchero; M. Merryman 1980-4-9 47 B Butte Table Mtn ca. 6 mi n of Oroville on Cherokee Rd, ca. 0.3 mi w of the road. 384 Comment
  SEINET12319532  Lamium amplexicaule W. K. Cheechov 1978-1 18 Butte 200 FT ENE of Cohasset HWY, 0.7 MI N of East Lassen Ave. Chico 85 Comment
  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
  UCD80083  Lasthenia californica subsp. californica CNPS SN Foothill Team 2005-3-31 SNFN 0072 b Butte CDFG North Table Mountain Wildlife Area outside Oroville. Plot is ca. 1 mile west-southwest of turnout on tabletop, 1/4 mile northeast of a minor ravine. 310 Comment
  CAS-BOT-BC354117  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte On the Chico-Oroville rd 8 miles from Oroville. Comment
  CAS-BOT-BC354118  Lasthenia fremontii A. A. Heller 1914-4-3 11260 Butte On the Chico-Oroville rd 8 miles from Oroville. Comment
  CHSC13845  Lasthenia fremontii P. Haberkern 1974-4-21 26 Butte In field off the Skyway, ca. 0.5 mi e of Notre Dame Blvd, e of Chico. 60 Comment
  CHSC42085  Lasthenia glaberrima John E. Hunter 1986-4-12 49 Butte Vacant lot within City of Chico, ca. 45 m nw of the intersection of East Ave. an Ceanothus. 62 Comment
  CHSC98994  Lathyrus angulatus Lowell Ahart 2008-5-21 14770 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
  CHSC90961  Lathyrus jepsonii var. californicus Lowell Ahart 2005-4-14 11699 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET5327267  Lathyrus jepsonii var. californicus R. McKee 1918-5-1 s.n. Butte Battle Creek. Comment
  CHSC25009  Lathyrus nevadensis var. nevadensis E. B. Copeland 1931-6-10 654 Butte Jonesville. 1500 Comment
  CHSC65554  Lathyrus nevadensis var. nevadensis L. P. Janeway 1995-6-6 4774 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 749 Comment
  CAS-BOT-BC213286  Lathyrus sulphureus Lowell Ahart 1983-5-28 4025 Butte Along the trail to the over-look at Feather Falls, 3 1/2 miles north of Feather Falls 600 Comment
  CHSC864  Lathyrus sulphureus P. Delaplane; Eb 1965-5-4 51 Butte South side of Concow road. South side of Lake Concow. 1219 Comment
  JEPS117248  Lathyrus tingitanus Lowell Ahart 2010-5-14 16634 Butte On the west side of Highway 32, just north of the entrance to the Disc Golf Area, Upper Bidwell Park, about 5 miles (air) northeast of Chico 376 Comment
  JEPS124205  Lavandula Lowell Ahart 2015-4-11 20027 Butte About 1/4 mile west of the intersection of Palermo Honcut Highway and Lower Honcut Road, west of Honcut, about 13 miles (air) south Oroville. Comment
  CAS-BOT-BC321755  Layia fremontii A. A. Heller 1914-4-14 11292 Butte Hills 8 miles N of Oroville Comment
  CHSC101983  Layia fremontii Carl W. Hill 1980-4-12 8 Butte Ca. 0.5 mi E of intersection of hwy and Skyway, 2 mi SE of Chico, on N side of Skyway. 67 Comment
  CHSC65987  Layia fremontii Vernon H. Oswald 1996-4-26 7455 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in the NW corner of the north paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC75252  Layia fremontii Jennifer Slater 1997-4-6 7 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 60 Comment
  UC625525  Layia fremontii Frank W. Gould 1938-4-23 307 Butte 2 mi n Chico 60 Comment
  UCR227350  Layia fremontii Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CAS-BOT-BC321759  Layia fremontii Jeanne McFarland; Kathie Meyer; Anne Mullenniex 1995-4-9 3 Butte At intersections of Hwys 149 & 99 just N of Oroville, 50' E of offramp 54 Comment
  POM30571  Layia fremontii C. C. Bruce 1897-05 1845 Butte [Unspecified] Comment
  UCSB63596  Layia fremontii Wilson, Simon 1995-4-11 Butte Ca. 5 mi. n of Chico, 1 mi. toward Richardson Springs from junction of Cohasset Rd. and Richardson Springs Rd.; Richardson Springs USGS Quadrangle T23N, R1E, NW 1/4 sect. 23 115 Comment
  SFV4007  Layia platyglossa M. L. Vincent 1961-3-29 39 Butte Sacramento Valley Oroville-Chico Road, 1 mile east of Chico. 60 Comment
  CAS-BOT-BC380894  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  CAS-BOT-BC274354  Leersia oryzoides Lowell Ahart 1987-7-3 5777 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA32427  Leersia oryzoides E. M. Johnston 1915-1 Butte Biggs 0 Comment
  CHSC102422  Lemna minuta Lowell Ahart 2009-7-9 16008 Butte On wet soil and in shallow water, along streams, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC49693  Lemna minuta Vernon Oswald 1984-2-25 1084 Butte Upper Bidwell Park, Chico, ca. halfway between Upper Park Rd. and the north rimrock, slightly e of Day Camp. Near the head of a ravine. 152 Comment
  JEPS120087  Lemna minuta Lowell Ahart 2012-6-5 18158 Butte On the south side of Beastson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC116704  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-14 20823 Butte On the east side of North Honcut Creek, Peter Ahart Ranch,about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  JEPS119756  Leontodon saxatilis subsp. longirostris Lowell Ahart 2012-5-14 18054 Butte North edge of the path to Table 12, south of Big Chico Creek, north of the paved road, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC215732  Lepechinia calycina Lowell Ahart 1989-5-29 6305 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road 670 Comment
  CAS-BOT-BC89698  Lepidium latifolium Lowell Ahart 1982-7-10 3667 Butte Gray Lodge chek in station parking area, about 12 miles southwest of Gridley. 35 Comment
  CAS-BOT-BC89875  Lepidium nitidum A. A. Heller 1914-3-21 11274 Butte Hills 8 miles north of Oroville. Comment
  CHSC19949  Lepidium nitidum M. S. Taylor 1975-3-10 410 Butte Ca. 30 yds s of Covered Bridge on Butte Creek, ca. 8 mi e of Chico. Comment
  CHSC4516  Lepidium nitidum C. Glascock 1965-3-2 271 Butte At side of Chico Canyon Rd. ca. 1/2 mi. from its intersection with E 8th St., Chico. Comment
  CHSC85395  Lepidium nitidum John Dittes; Josephine Guardino 1992-5-7 484 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
  SEINET10907265  Lepidium nitidum Mary Susan Taylor 1974-3-26 Taylor 88 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  SEINET11986394  Lepidium nitidum B. K. Madsen 1970-1 17 Butte along Wildwood Ave., ca 0.5 mi E of intersection of Wildwood Ave & Manzanita Ave, Upper Bidwell Park 85 Comment
  CHSC75261  Lepidium nitidum var. nitidum Jennifer Slater 1997-4-6 13 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  SEINET10448291  Lepidium perfoliatum Mary Susan Taylor 1982-4-28 Taylor 4363 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC34026  Lepidium pinnatifidum L. Ahart 1981-7-26 3013 Butte Ca. 1/2 mi s of the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CHSC106603  Lepidium strictum L. P. Janeway 2011-4-13 10233 Butte Sacramento Valley. Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) 59 Comment
  CHSC106883  Lepidium strictum Lowell Ahart 2011-5-1 17337 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC35012  Lepidium strictum R. E. Preston 1982-3-6 185 Butte Ca. 100 yds n of Horseshoe Lake, Upper Bidwell Park, Chico. 106 Comment
  CHSC26276  Lepidium virginicum var. pubescens Joan P. Warner 1977-4-22 3 Butte Along Hwy 70, ca. 2.2 km sw of Butte-Plumas county line, ca. 23 km nw of Paradise. 485 Comment
  CHSC79066  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte About 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  SEINET4670739  Leptochloa dubia R. McKee 1907-7-8 17212 Butte Chico Comment
  UC1562350  Leptochloa fascicularis Vernon H. Oswald and Lowell Ahart 1990-7-31 4413 Butte Vinton Gulch Lake Oroville (ca 0.7 air mi n, bordering a streamlet on strand of lake below level of the cement ramp) 259 Comment
  CHSC117322  Leptochloa fusca subsp. fascicularis B. Castro 2008-7-15 1759 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of rice field in adjacent ditch. 31 Comment
  POM313213  Leptochloa fusca subsp. fascicularis H. L. Mason 1945-9-19 12730 Butte Gray Lodge Game Refuge, northwest of Pennington Comment
  UCD64022  Leptochloa fusca subsp. uninervia H. Clem Meith 1968-11-1 Butte Oroville. Comment
  RSA468553  Leptosiphon androsaceus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  POM253017  Leptosiphon bicolor A. A. Heller 1938-4-11 15022 a Butte Back of the rifle range east of Chico. 91 Comment
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Jul 31 2010
  CHSC29386  Leptosiphon filipes R. A. Schlising 1980-6-24 3777 Butte Along Hwy 70 in canyon of North Fork, Feather River, 0.2 mi N of Cresta Powerhouse. At roadside. 457 Comment
  CHSC41368  Leptosiphon filipes B. Castro 1982-4-21 26 Butte Vernal pool area, 0.3 mi w of jct with Hwy 99 on Broyles Rd, ca 10 mi nw of Chico. 60 Comment
  CHSC62775  Leptosiphon filipes L. P. Janeway 1993-6-9 4376 Butte Plumas National Forest. Southeast of Swayne Hill, along Road 22N24 1.8 mi south of the 'low water crossing' of French Creek. East-facing slope above French Creek. 621 Comment
  CHSC30274  Lessingia nemaclada M. S. Taylor 1979-9-9 1918 Butte On w side of Bull Run Rd., ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC30399  Lessingia nemaclada Diane H. Ikeda 1979-9-29 162 Butte Ca. 3.1 mi from the first crossing of Feather River with Hwy. 70 on Hwy. 70, just before the Plumas National Forest boundary. Comment
  CHSC89484  Lessingia nemaclada Jenny Marr 1994-7-6 215 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  UC726004  Lessingia nemaclada A. A. Heller 1941-11-8 16335 Butte about 20 mi e Oroville (just w of Jarboe Pass, along Feather River Highway) Comment
  CAS-BOT-BC342062  Lessingia virgata Lowell Ahart 1981-9-27 3211 Butte North-east of Palermo 80 Comment
  CHSC28736  Lessingia virgata Robert Schlising 1979-10-4 3494 Butte Archery range just e of lake in Bidwell Park, Chico. Comment
  CHSC45654  Leucanthemum vulgare Vernon Oswald 1987-6-12 2992 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  SEINET10572651  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2708 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  CHSC42025  Ligusticum grayi Lowell Ahart 1986-7-2 5339 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  CHSC42591  Ligusticum grayi Vernon Oswald 1985-6-20 1858 Butte Near Humbug Rd. at the n end of Snag Lake. 1706 Comment
  CHSC111128  Ligustrum japonicum Lowell Ahart 2012-6-21 18199 Butte Lawn, on the south side of the paved park road, west of the entrance from Woodland Avenue, Lower Bidwell Park, Chico. 62 Comment
  JEPS122073  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC46238  Lilium washingtonianum Pauleen Broyles 1987-8-5 1074 Butte Ca 6 km n of Inskip, ca. 0.3 km n of jct. Of Skyway and Bull Hill Rd. 1530 Comment
  LA22091  Lilium washingtonianum E. B. Copeland; 1931-7-12 615 Butte Jonesville 1600.0 Comment
  CHSC31351  Limnanthes alba P. Lynn Lester 1980-4-14 21 Butte Ca. 3 yds e of Meridian Rd, ca. 0.1 mi n of Wookey Rd, ca. 0.9 mi s of Pine Cr, ca. 3 mi e of Hwy 99, ca. 7 mi nnw of Chico. 88 Comment
  RSA21487  Limnanthes alba Carl B. Wolf 1937-5-14 2814 Butte Sacramento Valley, 3-1/2 mi. E. or Richvale. 30 Comment
  JEPS87379  Limnanthes alba subsp. alba Lowell Ahart 1993-5-17 6951 Butte about 1 1/2 mi n and 3 mi e Honcut (w side of Dunstone Rd, about 12 mi se of Oroville) 60 Comment
  SEINET12183346  Limnanthes douglasii Unknown 1978-1 4 Butte Table Mtn. ca 6 mi S on Cherokee Rd. from Hwy 70, W side of road, ca 5.5 mi n of Oroville; Comment
  UCD22645  Limnanthes douglasii Joseph Laferriere 1982-4-18 2 Butte Table Mountain, 5 miles north of Oroville on Cherokee Road, near creek. 396 Comment
  UC1586572  Limnanthes douglasii subsp. douglasii Lowell Ahart 1991-5-2 6648 Butte about 2 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  RSA712987  Limnanthes douglasii subsp. nivea L. Ahart 2006-4-28 12542 Butte South part of drainage into Beatson Hollow, west of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 320 Comment
  CHSC1008  Limnanthes douglasii subsp. rosea Edna Canfield 1904-4-9 Butte Hooker Oak Field. 76 Comment
  CHSC2386  Limnanthes douglasii subsp. rosea R. Carter 1965-3-30 174 Butte Found in vernal pools on Wurlitzer Ranch NW of Chico, inside gate. 60 Comment
  SDSU8107  Limnanthes douglasii var. rosea Scott McMillan 1992-4-11 Butte The pool was under an electrical tower north of Upper Park Rd., in Upper Bidwell Park, Chico, California. 78 Comment
  CAS-BOT-BC45926  Limnanthes floccosa subsp. californica Charles T. Mason, Jr. 1949-4-24 1255 Butte 8 miles N.W. of Oroville along the Oroville-Chico road 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
  CHSC67556  Limnanthes floccosa subsp. californica James D. Jokerst 1991-4-18 3242 Butte Rancho Arroyo Population along dirt road ca. 0.25 mi E of Stern's location. 79 Comment
  CHSC32586  Limosella acaulis L. Ahart 1980-5-11 2242 Butte On the w side of Pentz-Magalia Hwy, ca. 1/2 mi sw of Kunkle Reservoir, ca. 3 mi s of Paradise. 500 Comment
  CAS-BOT-BC246142  Limosella aquatica Lowell Ahart 1987-5-6 5576 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  SEINET10546852  Linanthus Mary Susan Taylor 1981-5-21 Taylor 3777 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
  SEINET10496789  Linanthus bicolor Mary Susan Taylor 1980-4-16 Taylor 2491 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  CHSC24766  Linanthus dichotomus P. J. Welch 1976-4-12 17 Butte Ca. 0.65 mi e along Crown Pt. Rd. from intersection with Deer Creek Hwy. (Hwy. 32) and ca. 30 yds n of Crown Pt. Rd.; 10.4 mi ene of Chico. 304 Comment
  SEINET9369866  Linanthus filipes Unknown 1996-7-9 13171 Butte Plumas National Forest Comment
  SEINET13711425  Lindernia dubia Lowell William Ahart, Lowell William Ahart 1999-1 8131 Butte 12 Mi (Air) SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC37385  Lindernia dubia var. anagallidea R. A. Schlising 1980-9-2 3989 Butte Bidwell R. State Park west of Chico. Comment
  JEPS98709  Linum bienne Lowell Ahart 2000-5-21 8375 Butte 2 mi N of Oroville (N margin of Table Mountain Boulevard, 300 yds SE of Garden Drive, about 1/10 mi NW of the Thermalito Diversion cut) 67 Comment
  CHSC76854  Lipocarpha aristulata L. P. Janeway 1999-6-26 6490 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC61358  Listera convallarioides Lowell Ahart 1993-7-31 7134 Butte Along a small stream that flows into Big Kimshew Creek, on the east side of the dirt road, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  UC600635  Listera convallarioides H. F. Copeland 1930-7-25 Butte Jonesville Comment
  CHSC23698  Lithocarpus densiflorus M. S. Taylor 1976-5-5 1110 Butte On n side of Hwy 70, ca. 2 mi n of Jarbo Gap, ca. 17 mi ne of Oroville. Comment
  CHSC28632  Lithocarpus densiflorus M. S. Taylor 1979-3-31 1969 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/4 mi ne of Concow Rd and Lake Concow, ca. 25 mi ne of Oroville. 670 Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  CAS-BOT-BC432270  Lithophragma campanulatum A. A. Heller 1914-6-22 11955 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC432271  Lithophragma campanulatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  UC1377728  Lithophragma parviflorum John Ingram 1960-4-6 506 Butte below Pentz Road about 1 mi n of junction with Nelson Bar Road s Paradise Comment
  CHSC100991  Lolium multiflorum L. P. Janeway 2008-3-18 9235 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  CHSC2160  Lolium multiflorum H. Silberman; D. Isaac 1949-5-9 Butte West side of football field, CSC campus. 54 Comment
  CHSC90644  Lolium multiflorum Lowell Ahart 2005-4-2 11698 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC271207  Lolium temulentum Lowell Ahart 1983-6-21 4068 Butte Along Bloomer Hill Road, ca. 0.5 mi. W of the Oroville Quincy Highway, ca. 15 mi. NE of Oroville Sec. 5 400 Comment
  CHSC46326  Lomatium caruifolium var. denticulatum Lowell Ahart 1989-5-23 6230 Butte Along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  UCD73061  Lomatium caruifolium var. denticulatum 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
  POM78413  Lomatium macrocarpum C. C. Bruce 2056 Butte Foothills Comment
  CDA13872  Lomatium marginatum G. F. Hrusa, T. D. Wilfred 1997-5-7 13730 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC33347  Lomatium utriculatum Laurel L. Huey 1980-4-21 4 Butte Ca. 80 m se of Butte Creek at Covered Bridge. 125 Comment
  SD5000  Lonicera conjugialis E. B. Copeland 1930-6-27 Butte Jonesville 1550 Comment
  CHSC194  Lonicera hispidula 1932-7-5 Butte Nunnely and Copeland rds. Paradise, canyon side. 548 Comment
  CHSC55489  Lonicera interrupta L. P. Janeway 1991-6-8 3998 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. At edge of little-used dirt road. 411 Comment
  SEINET10905410  Lonicera interrupta Mary Susan Taylor 1977-6-25 Taylor 1373 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CDA13333  Lotus nevadensis var. nevadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13179 Butte Sierra Nevada; approx. 0.4 m from Hwy 162 on 22N89. Comment
  POM16592  Lotus oblongifolius var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET2062321 Image available Lotus unifoliolatus Marc Mittleman 1980-8-1 225 Butte L:ittle Chico Creek, adjacent to China Garden Springs. 262 Comment
  RSA406345  Lotus wrangelianus M. M. Boney 1897-1 1724 Butte Butte Comment
  SD243397  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 PDR 1373328 Butte South-southwest of Richvale. Rice field. Comment
  CHSC28425  Ludwigia peploides M. S. Taylor 1979-10-2 2206 Butte Sacramento River sandbar, ca. 5 mi w of Chico. 30 Comment
  JEPS110472  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap 548 Comment
  SEINET10448485  Lunaria annua Mary Susan Taylor 1983-3-13 Taylor 5243 Butte T23N R5E se sec 31. Pulga quad. Community of Pulga, off n side of Hwy 70, ca. 20 mi ne of Oroville. l600 ft. 488 Comment
  SEINET10488406  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20n,r6e,sec.31 se 1/4, nw 1/4. Forbestown quad. E side of lumpkin-laporte Road, 1 mile n of enterprise bridge over s fork feather river, ca 10 air miles E of oroville. Granitic soils. Assoc.; Diplacus grandiflorus, lupinus Stiversii, trifolium ciliolatum 457 Comment
  CAS-BOT-BC201356  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49124 Butte Nimshew - 2.0 miles southwest - Chico Rd. Comment
  UC865452  Lupinus arbustus A. A. Heller 1915-6-25 12016 Butte Chico Meadows; Sierra Nevada, Chico Meadows 1219 Comment
  HSC71549  Lupinus bicolor J. P. Smith 1973-3-22 5913 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  UCD107231  Lupinus bicolor A. A. Heller 1915-4-12 11817 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  CHSC32608  Lupinus bicolor var. tridentatus J. D. Jokerst 1981-3-28 1269 Butte Butte College Campus ca 500 m due N of the jct of Pentz and Clark roads. 97 Comment
  CHSC38505  Lupinus bicolor var. tridentatus Vernon Oswald 1983-3-6 120 Butte Upper Bidwell Park, Chico, at Devil's Kitchen (2.1 mi e of the power lines). Growing along the edge of Upper Park Rd. 219 Comment
  CHSC65779  Lupinus bicolor var. tridentatus Vernon Oswald 1996-4-10 7357 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common in an equiptment storage lot off of 7 Mile Lane near the S end of Tract 8, Sanctuary 2. 33 Comment
  CHSC93459  Lupinus bicolor var. tridentatus Lowell Ahart 2006-5-8 12595 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  SEINET10452072  Lupinus densiflorus Lowell Ahart 1985-5-6 Ahart 4932 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC87798  Lupinus latifolius var. columbianus Paul Maslin 2004-4-15 15 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611499E 4411082N. 548 Comment
  CHSC34684  Lupinus nanus M. S. Taylor 1981-5-5 3601 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 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
  UCD108986  Lupinus nanus A. A. Heller 1913-3-9 10682 Butte hills two miles north of Oroville. 91 Comment
  UCD109250  Lupinus nanus M. S. Taylor 1980-5-27 2720 Butte N side of Bald Rock Rd, ca. 1 mi e of Lake Madrone. 670 Comment
  CHSC3251  Lupinus nanus var. apricus Virginia Hagaman 1966-3-28 90 Butte Table Mountain. Comment
  RSA424768  Lupinus nanus var. apricus Aaron Liston, M. Blumler 1987-4-24 658 -6 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  UCD109333  Lupinus pachylobus H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  POM196153  Lupinus sellulus var. artulus E. B. Copeland 1929-7-17 377 Butte Above Jonesville. 2000 Comment
  SEINET10486274  Lupinus subvexus D. Kroessig 1979-4-18 Kroessig 1 Butte Corolla blue and white. Medium population in grazed grassland. N. Butte co, Nw of singer creek. Associated spp: plagiobothrys fulvus, delphinium spp, and Sanicula bipinnatifida. 61 Comment
  SEINET10489014  Lupinus succulentus Mary Susan Taylor 1982-4-28 Taylor 4354 A Butte Pennington quad. Corolla blue. Graylodge waterfowl refuge, n side of Rutherford rd, ca 1.8 mi w of its jct with pennington rd at the checking Station, ca 12 mi sw of gridley. With brassica nigra, hemizonia parryi rudis. 21 Comment
  SEINET10452164  Lupinus vallicola Mary Susan Taylor 1976-3-30 Taylor 1042 Butte Valley Grassland, ca. 0.5 mi W of Chero kee Rd, ca. 2 mi NE of Oroville, on Table Mt; with Limnanthes douglasii. 373 Comment
  RSA113235  Lupinus vallicola subsp. vallicola E. K. Balls, Lee W. Lenz, B. K. Balls 1955-5-13 20684 Butte 0.5 mi. s. of Paradise on road from Oroville to Magalia. 427 Comment
  CHSC52705  Luzula cascadensis L. P. Janeway 1987-6-13 2207 Butte Along Dogwood Creek; road to Mayaro 2.4 mi E of Concow Road. 990 Comment
  CDA13297  Luzula comosa G. F. Hrusa, T. D. Wilfred 1996-7-9 13145 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC30509  Luzula macrantha N. E. H. Prouty 1980-4-7 110 Butte Along Lower Rocky Honcut Creek, south of Swedes Flat Rd. 381 Comment
  CAS-BOT-BC441204  Luzula macrantha Lowell Ahart 1980-3-26 2066 Butte Near Hurleton 600 Comment
  RSA718305  Luzula parviflora L. P. Janeway 2006-8-6 8830 Butte Near road along west side of lower Pinkard Creek, 1.2 road miles north of Lost Creek Reservoir dam. 1021 Comment
  CHSC102828  Lychnis coronaria Lowell Ahart 2009-6-19 15935 Butte Along trail, onn the east side of Big Chico Creek, about 50 yards west ofTen Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC31790  Lycopus americanus L. Ahart 1973-8-13 270 Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 45 Comment
  CHSC58923  Lycopus americanus Lowell Ahart 1992-7-23 6830 Butte Growing on the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  RSA0036439  Lycopus americanus Lowell A. Ahart 2012-10-20 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  UC1594713  Lycopus americanus Lowell Ahart 1992-7-23 6830 Butte ca. 2 mi. w. Oroville Dam (n. side of Thermalito Diversion Pool, near Longs Bar Monument); Lake Oroville Recreation Area 76 Comment
  SEINET10452837  Lythrum californicum Mary Susan Taylor 1978-9-8 Taylor 1904 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  JEPS117541  Lythrum hyssopifolia Lowell Ahart 2010-6-9 16780 Butte On the east side of vernal pool full of dodder, about 30 yards south of the poor dirt road, about 60 yards west of the fence, about 1/4 mile east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  UC204408  Lythrum hyssopifolia A. A. Heller 1914-7-31 11631 Butte about 6 mi nw of Chico (Sacramento Valley); Sacramento Valley Comment
  CHSC65401  Lythrum portula Vernon Oswald 1983-7-21 892 Butte Upper Bidwell Park, Chico, along the edge of Horeshoe Lake. 100 Comment
  JEPS104343  Lythrum portula Lowell Ahart 2003-6-23 10301 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  JEPS113572 Image available Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  SD130472  Lythrum salicaria Lowell Ahart 1981-7-18 2938 Butte Along edge of Pacific Heights Road, ca. 1.8 mile west of Highway 70, ca. 3.0 miles southwest of Oroville. 35 Comment
  POM183160  Madia bolanderi H. F. Copeland 1930-7-25 1322 Butte Jonesville; in meadow below cabin Comment
  CHSC43198  Madia elegans Robert Banchero 1981-7-17 586 Butte Along Concow Rd n end of Concow Res. 621 Comment
  SEINET3450906  Madia elegans Unknown 2003-6-30 10321 Butte Forbestown, Forbestown, about 2 miles air northwest, east side of Ponderosa Way, about 2 miles by road southwest of the Ponderosa Dam 570 Comment
  SFV11425  Madia elegans M. L. Vincent 1968-6-10 850 Butte Sierra Nevada 1/5 mile north of Cresta Power Station, North Fork Feather River. 460 Comment
  CAS-BOT-BC342726  Madia elegans H. M. Hall 1914-7-18 9758 Butte Chico Creek, 5 mi. E. of Chico Comment
  UCD150343  Madia elegans Harry George 1967-8-30 s.n. Butte Butte Creek and 99E Highway. Comment
  CHSC62714  Madia elegans subsp. elegans L. P. Janeway 1993-6-3 4370 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  CHSC379  Madia elegans subsp. vernalis B. Richardson 1929-4-21 Butte Plains around Chico. Comment
  POM56168  Madia elegans subsp. vernalis A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek). Comment
  RSA0117082  Madia exigua Lowell A. Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 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
  RSA718336  Madia exigua L. Ahart 2006-6-9 12650 Butte On the E side of Bardees Bar Road. S of the small stream. About 1/4 mile SW of the poor bridge across the North Fork of the Feather River at Bardees Bar. About 2.75 miles (air) SW of Pulga. 404 Comment
  UC830847  Madia exigua Lewis S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CAS-BOT-BC342967  Madia gracilis Lowell Ahart 1985-5-31 5035 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville 274 Comment
  CHSC113512  Madia gracilis Lowell Ahart 2014-7-7 19566 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC44511  Madia gracilis Lowell Ahart 1988-6-21 6056 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
  CHSC93874  Madia gracilis Lowell Ahart 2006-6-9 12649 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 403 Comment
  JEPS119875  Madia gracilis Lowell Ahart 2012-6-2 18129 Butte Along the sides 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
  SEINET10474815  Madia gracilis Mary Susan Taylor 1980-5-31 Taylor 2752 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  CAS-BOT-BC345233  Madia subspicata Lowell Ahart 1978-6-2 s.n. Butte Sutter Buttes Area. Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC512735  Maianthemum stellatum A. A. Heller 1919-5-17 13153 Butte Banks of the Feather River near Stirling Comment
  UC1609223  Malacothrix floccifera Lowell Ahart 1993-6-26 7028 Butte about 1 mi w Lost Creek Reservoir (w side of the dirt road); Mooreville Ridge 1188 Comment
  UC572335  Malacothrix floccifera P. L. Johannsen 1936-7-22 962 Butte 1.5 mi sw Head of Bottle Creek; Lassen National Forest, Paynes Creek Quad. 1432 Comment
  CHSC1036  Malva neglecta F. Johnson 1937-6-4 Butte Near Chico. 57 Comment
  CHSC36301  Malva parviflora M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4347 Butte Graylodge Waterfowl Refuge, near lot 5, ca. 1 mi s of HQ, ca. 12 mi sw of Gridley. 19 Comment
  CHSC63257  Malva parviflora L. Ahart 1994-3-30 7277 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  CHSC108981  Marah fabacea Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17916 Butte On the north side of the path, near table 17, on the north side of Centennial Avenue. Lower Bidwell Park, Chico. 80 Comment
  CHSC3917  Marah fabacea var. agrestis Wayne O. Baum 1967-3-13 27 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway, along cliff bank. 304 Comment
  CHSC30818  Marah watsonii M. S. Taylor; J. D. Jokerst 1980-4-18 2525 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  SEINET10448096  Marah watsonii Mary Susan Taylor 1981-3-24 Taylor 3443 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CHSC27241  Marrubium vulgare P. Moyer 1972-5-7 196 Butte CSUC Campus. N bank Chico Ck., e of L.S. Bridge. 60 Comment
  CAS-BOT-BC67811  Marsilea vestita Lowell Ahart 1983-7-10 4191 Butte About 1/2 mile north-east of teh intersection of Highway 99 and Pentz Road, about 13 miles north of Oroville. 65 Comment
  CHSC26  Marsilea vestita J. Campbell 1954-5-5 Butte Plant Introduction Garden, 3 mi. SE Chico. 57 Comment
  CHSC19636  Matricaria discoidea E. Parreno 1968-5-22 132 Butte Along sidewalk on se corner of Ivy and 1st Sts., Chico. 59 Comment
  CAS-BOT-BC348087  Matricaria discoidea Lowell Ahart 1979-4-14 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC36289  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
  CHSC23465  Meconella californica J. R. Lee 1972-4-20 2 Butte Found on hill 600 yds sw of Covered Bridge, 7.2 mi from the Chico city limits. 182 Comment
  CHSC43350  Meconella californica Lowell Ahart 1978-4-19 1656 Butte Near the overlook at Feather Falls, along trail to Feather Falls, about 5 miles north-west of the town of Feather Falls. 548 Comment
  RSA754957  Medicago lupulina L. Ahart 2009-6-12 15842 Butte 10-50 yards north of the Bears Lair Picnic Area and Coastal Redwood Grove sign, about 80-130 yards east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  CHSC21008  Medicago polymorpha M. S. Taylor 1975-4-25 504 Butte Ca. 20 mi ne of Chico on Cohasset Hwy, ca. 1/2 mi n of Horse trough. Comment
  UCD107841  Medicago polymorpha Robert Kehlor 1951-4-14 33 Butte J. M. Kehlor Ranch, 6 1/4 miles east of Oroville. Comment
  CHSC21046  Medicago sativa M. S. Taylor 1975-6-30 827 Butte On e side of Cohasset Rd, ca. 500 yds s of Lassen Ave, ca. 1 mi n of Chico. 60 Comment
  SEINET12155149  Medicago sativa P. L. Ricker 1912-1 3920 Butte Chico Comment
  CAS-BOT-BC271135  Melica aristata E. B. Copeland 1932-7-19 s.n. Butte Jonesville, Butte Creek Canyon 1550 Comment
  JEPS105603  Melica californica L. P. Janeway 2003-5-7 7777 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam 329 Comment
  UCD87142  Melica californica P. B. Kennedy 1914-5-1 4751 Butte Grade to Paradise. Comment
  CHSC38079  Melica fugax R. E. Preston 1982-7-21 350 Butte Ca. 1 mi SE of Philbrook Reservoir. 1828 Comment
  CHSC41166  Melica harfordii L. P. Janeway; Gary Benson 1985-7-1 Butte Plumas N.F. ECOS plot 11-123. Slope on west side of Middle Fork Feather River near Milsap Bar. 633 Comment
  CHSC42928  Melica harfordii Lowell Ahart 1987-7-8 5798 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CAS-BOT-BC281020  Melica stricta Vernon Oswald; Lowell Ahart 1987-8-5 3182 Butte Skirting the N flank of Humboldt Peak on the Butte - Plumas county border, S of the Pacific Crest Trail 2072 Comment
  CHSC73896  Melica subulata B. Castro 1997-6-13 742 Butte Mtn. House Proposed SIA. Ca 2 air mi NE of Brush Creek and 1.1 air mi E of Mtn. House, along the 'C' spur off USFS Rd 22N54, south of Mtn House Creek. Along dirt road edges. 1082 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  UCD88614  Melica subulata August L. Hormay 1929-7-7 s.n. Butte Butte Creek, 4 miles below Butte Mtn. Ranger Station. Comment
  CAS-BOT-BC262498  Melica torreyana John Thomas Howell 1962-6-16 37538 Butte Magalia 731 Comment
  JEPS116074  Melica torreyana Lowell Ahart 2009-5-30 15803 Butte On the northeast side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  SEINET10599671  Melica torreyana A. Arthur Heller 1902-5-8 Heller 5511 Butte Berry Canon (near Clear Creek). Comment
  CDA4211  Melilotus officinalis L. 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 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CDA5721  Melissa officinalis L. Ahart 2002-9-8 9931 Butte On the south side of the paved road, just south of the first parking spaces at the Feather Falls Trailhead, in Bryant Ravine, about 2 miles north by road from the town of Feather Fall. Comment
  CHSC43843  Melissa officinalis B. Castro 1987-8-25 209 Butte Butte Ck ca 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  JEPS115362  Melissa officinalis Lowell Ahart 2009-7-9 16014 Butte On the east edge of big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 181 Comment
  SEINET10870000  Melissa officinalis Mary Susan Taylor 1977-7-15 Taylor 1415 Butte Immediate vicinity of Butte Creek under Honey Run Covered Bridge, ca. 5 mi E of Chico. 244 Comment
  CHSC89463  Mentha canadensis R. D. Fischer 2004-7-21 450 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10-Mile House Road near end of park property. In mdw along drainage, between road and Big Chico Creek. 216 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  JEPS98512  Mentha pulegium Lowell Ahart 2000-7-17 8593 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  JEPS107540  Mentha spicata Lowell Ahart 2005-8-19 12334 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 49 Comment
  CAS-BOT-BC428992  Micranthes fragosa Lowell Ahart 1980-3-26 2067 Butte Near Hurleton. 600 Comment
  CHSC1674  Micranthes integrifolia L. Oliver; D. Sloan 1935-2-23 Butte Salmon Hole on Chico Creek. 152 Comment
  CHSC45981  Micranthes integrifolia Lowell Ahart 1975-3-18 712 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS120079  Micranthes integrifolia Lowell Ahart 2012-3-2 17764 Butte On the west side of South Rim Trail, about 1/2 mile southwest of the of homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico. Comment
  CAS-BOT-BC429039  Micranthes nidifica Lowell Ahart 1983-3-27 3905 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  CAS-BOT-BC348316  Micropus californicus Lowell Ahart 1979-4-17 s.n. Butte 3 miles north-west of Bangor. On the east side of North Honcut Creek 1/10 mile north of Avacado Ave. 100 Comment
  SEINET10904843  Micropus californicus Mary Susan Taylor 1986-5-6 Taylor 5617 Butte Butte County; Along Cohasset Hwy, Between Monk's Store and Horse Trough, ca. 8-10 mi NNW of Chico. Foothill woodland. With Vern Oswald and Lowell Ahart. 1200 ft. 366 Comment
  CHSC56091  Micropus californicus var. californicus R. L. Ondricek-Fallsheer 1983-5-7 166 Butte On rim of cliff, tip of Flatiron Ridge; ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  SD116532  Micropus californicus var. californicus Barbara Ertter, Lowell Ahart and Jeff Strachan 1980-5-6 3279 Butte Peter Ahart Ranch; 2.5 miles northnortheast of Honcut. 29 Comment
  CAS-BOT-BC348467  Micropus californicus var. californicus A. A. Heller; H. E. Brown 1903-5-6 5460 Butte Berry Canyon (Near Clear Creek) Comment
  UCD134504  Micropus californicus var. californicus R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles east of Oroville. Comment
  UCSB63614  Micropus californicus var. californicus Cooley, Patrick 1990-4-7 Butte Humbolt Rd. ca. 2 mi. e of Chico, Butte Co.; Chico Quadrangle, 7.5', SW 1/4 of NE 1/4 of SW 1/4 Sect. 21, T22N, R2E 152 Comment
  UCD80102  Microseris acuminata CNPS SN Foothill Team 2005-4-13 SNFN 0078 b Butte City of Chico, Doe Mill Meadowfoam Preserve, located at the east end of Warfield street, east side of the creek diversion between the diversion and the creek, ~85 m south of the Preserve gate entrance. 82 Comment
  CHSC31605  Microseris douglasii L. Ahart 1978-4-27 1665 Butte Peter Ahart Ranch, Honcut. Fields. 50 Comment
  CAS-BOT-BC349092  Microseris douglasii subsp. tenella Lowell Ahart 1985-4-29 4888 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  CAS-BOT-BC349166  Microseris elegans Lowell Ahart 1989-4-26 6203 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 36 Comment
  POM53412  Microseris lindleyi E. B. Copeland 1903-4-10 3028 Butte Chico Comment
  SEINET10570404  Mimulus Mary Susan Taylor 1979-8-4 Taylor 2177 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  SEINET10830535  Mimulus Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5242 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
  SEINET7073609  Mimulus aurantiacus A. G. Vestal 1955-5-20 s.n. Butte About 5.6 miles south of Magalia on the Pentz Road [Pentz - Magalia Highway]. UTM Zone 10, 6223320mE, 4398975mN. Coordinate datum: NAD27. Comment
  SEINET10570196  Mimulus bifidus Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7043 Butte Jarbo pass on hwy 70. Yellow pine, california buckeye, and shrubby lupine, woody Plant, corolla apricot color. 701 Comment
  RSA796039  Mimulus bifidus subsp. bifidus L. Ahart 2012-6-2 18128 Butte Along the sides 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. 287 Comment
  SEINET10962493  Mimulus kelloggii Mary Susan Taylor 1978-5-6 Taylor 1574 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  UC726348  Mimulus microphyllus A. A. Heller 1938-4-14 15028 Butte summit Table Mountain 304 Comment
  CHSC31022  Mimulus moschatus M. S. Taylor 1980-10-6 3361 Butte S side of Hwy 70, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel rest stop. 487 Comment
  CHSC44758  Mimulus moschatus R. Banchero 1980-6-17 243 Butte Along Skyway 0.6 mi E of the town of Lovelock, 3 mi SW of Stirling City. 877 Comment
  CHSC4561  Mimulus moschatus J. E. Bowlin 1967-7-21 48 Butte Butte Creek Canyon. 91 Comment
  POM308489  Mimulus moschatus Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3082 Butte Feather River Hwy. Comment
  POM298033  Mimulus moschatus var. longiflorus A. A. Heller 1917-7-26 12829 Butte Butte Meadows. 1280 Comment
  SBBG28815  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville Comment
  RSA589915  Mimulus tilingii Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7226 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  JEPS80654  Mimulus torreyi M. S. Taylor 1981-4-27 3555 Butte ca. 2 mi sw Brush Creek (ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd., ca. 0.5 mi n of Zink Rd.) 1005 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
  CHSC38293  Minuartia californica Vernon Oswald 1983-2-20 91 Butte Upper Bidwell Park, Chico, on the north rim at the level of the w end of Horseshoe L. 128 Comment
  SEINET10932248  Minuartia californica Mary Susan Taylor 1984-4-6 Taylor 5406 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CAS-BOT-BC388610  Minuartia douglasii John Thomas Howell 1978-4-17 52838 Butte Table Mountain 381 Comment
  CAS-BOT-BC388611  Minuartia douglasii John Thomas Howell 1967-6-22 42616 Butte Magalia 701 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
  UCD80207  Minuartia douglasii CNPS SN Foothill Team 2005-3-31 SNFN 0072 a Butte CDFG North Table Mountain Wildlife Area, in North Table Mountain Ecological reserve outside Oroville, ca. 1 mile west-southwest of turnout on tabletop, 1/4 mile northeast of a minor ravine. 310 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
  CHSC52180  Mollugo verticillata Pauleen Broyles 1987-5-21 1048 Butte The Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. Scattered along banks of Singer/Pine Creek. Comment
  JEPS93834  Mollugo verticillata Lowell Ahart 1998-7-1 8029 Butte about 7 air mi n of Oroville (20 yards s of a east west fence, in the tracks of poor dirt road about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain 403 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
  CHSC52230  Monardella odoratissima L. P. Janeway; R. A. Schlising 1988-7-22 3042 Butte Saddle between Coon Hollow and Chips Cr. 1905 Comment
  CHSC4631  Monardella sheltonii R. Carter 1996-6-15 445 Butte 3/4 mi. S of intersection of 21N40 and Oroville-Quincy Rd. on W side of Oroville-Quincy Rd. 701 Comment
  CHSC60989  Monardella sheltonii Lowell Ahart 1993-7-6 7062 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UCR280840  Monardella sheltonii Lowell Ahart 2016-6-29 21051 A Butte north side of Lumpkin Road, c. 100 yards north of McCabe Creek, c. 3 air miles west of Forbestown 388 Comment
  CHSC67804  Monardella venosa James D. Jokerst; Barbara Castro 1992-5-19 3355 Butte Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. Cascade Range Foothills. 76 Comment
  UC1748331  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar Middle Fork Feather River 579 Comment
  UC2062462  Monochoria vaginalis Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16443 Butte Rice Experiment State NW of Biggs, drained field at NE corner of Hamilton & Riceton roads. Comment
  CHSC38633  Montia parvifolia Vernon Oswald 1983-4-24 360 Butte Upper Bidwell Park, Chico, near the north edge of Chico Creek 50 ft w of Parking Area H at Day Camp. 91 Comment
  CAS-BOT-BC445137  Montia parvifolia L. P. Janeway 1987-6-5 2144 Butte Along French Creek just south of mouth of Peavine Creek. 624 Comment
  CHSC38557  Morus alba Vernon Oswald 1983-5-4 430 Butte Upper Bidwell Park, Chico, beside the trail on the N side of Chico creek 500 ft W of the power lines. 91 Comment
  JEPS119543  Morus alba Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17859 Butte East of the Deer Pen, south of Table 11, Lower Bidwell Park, Chico. Comment
  CHSC112724  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19222 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  POM196131  Muhlenbergia filiformis E. B. Copeland 1929-7-16 339 Butte Jonesville 1550 Comment
  UC1609264  Muhlenbergia filiformis Lowell Ahart 1993-7-29 7124 Butte near a seep about 2 1/2 mi n Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  RSA4650  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte Above Jonesville. 1750 Comment
  CHSC116016  Muhlenbergia rigens Lowell Ahart 2015-10-9 20544 Butte West edge of Bull Hill Road, about 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. 1697 Comment
  CHSC6180  Muhlenbergia rigens J. Wheeler 1968-5-16 361 Butte N of Bare Hole, Upper Bidwell Park. Comment
  CHSC44477  Myosotis discolor Lowell Ahart 1988-5-1 5975 Butte Along the North Fork of the Feather River, a little north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC46103  Myosurus minimus subsp. minimus J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1540 Butte Grey Lodge, north side of Rutheford Rd, ca. 100 meters West of Pennington Rd. Comment
  CHSC44208  Myriophyllum hippuroides Vernon Oswald 1988-7-4 3550 Butte Rancho Llano Seco. 7-Mile Lane 0.7 mi n of Nelsoon West Rd. Marshy slough. 30 Comment
  RSA4126  Nama lobbii E. B. Copeland 1930-6-27 s.n. Butte Jonesville. 1600 Comment
  CHSC38772  Narcissus incomparabilis Vernon Oswald 1983-3-19 192 Butte Upper Bidwell Park, Chico, 50 ft. e of Parking Area G (0.1 mi w of the power lines). 94 Comment
  CHSC82616  Narthecium californicum L. P. Janeway; B. Castro 2002-7-7 7606 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout. 1695 Comment
  UC1609065  Navarretia divaricata subsp. divaricata Lowell Ahart 1993-6-20 6999 Butte about 1 air mi nw Lost Creek Reserovir Dam; Mooreville Ridge, Jackass Flat 1158 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
  CHSC109216  Navarretia filicaulis B. Castro; L. P. Janeway 2004-7-13 1469 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 Rd. 829 Comment
  CHSC27048  Navarretia filicaulis Lowell Ahart 1978-7-2 1780 Butte Along Robinson Mill Road, Bangor. Near the edge of the road. 350 Comment
  CHSC87892  Navarretia filicaulis Lowell Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  HSC104014  Navarretia filicaulis L. Ahart 2013-7-1 18818 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  JEPS107911  Navarretia filicaulis Lowell Ahart 2005-7-12 12135 Butte Road cut bank, on the west side of Encina Grade Road (Bloomer Hill Road), about 2 miles (air) southeast of Bloomer Hill, about 2 miles west of Oroville Quincy Highway 623 Comment
  SEINET10969161  Navarretia filicaulis Mary Susan Taylor 1980-7-6 Taylor 3063 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  JEPS117233  Navarretia heterandra Lowell Ahart 2010-6-20 16833 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
  RSA26235  Navarretia intertexta Mary E. Wall 1940-7-24 s.n. Butte Paradise. Comment
  CHSC35115  Navarretia leptalea R. A. Schlising 1980-7-7 3856 Butte E part of county, Lumpkin Ridge, along Lumpkin/La Porte Road, just W of road dropping down to Fall River. 1280 Comment
  CHSC63650  Navarretia leptalea B. Castro; R. Zebell 1989-7-20 323 Butte S end of Walker Plains, on W side of the Oro-Quincy Hwy. 1539 Comment
  CHSC59336  Navarretia leucocephala J. L. Guardino 1992-4-21 24 Butte On Cana Pine Creek Rd., 0.5 mi sw of Hwy 99. Near vernal pool. 60 Comment
  CAS-BOT-BC230386  Navarretia leucocephala subsp. minima Lewis S. Rose 1939-6-5 39196 Butte Honcut 30 Comment
  HSC38283  Navarretia leucocephala subsp. minima Thomas W. Nelson, Jane P. Nelson 1976-5-9 2453 Butte At intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville Comment
  CHSC28478  Navarretia nigelliformis R. A. Schlising 1979-6-3 3431 Butte Richvale vernal pools, 1/4 mi s jct Hwy 99 and 162 to Oroville, across from Thermalito Afterbay. Comment
  CHSC26826  Navarretia pubescens M. S. Taylor 1978-5-7 1593 Butte In vernal pools on e side of Williams Rd, on Butte College campus, ca. 1/2 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC69482  Navarretia pubescens James D. Jokerst 1992-5-19 3366 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. On a terrace at powerlines on S side of Sheep Hollow. 97 Comment
  RSA755443  Navarretia pubescens L. Ahart 2009-5-23 15727 Butte About 20 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CHSC75393  Navarretia tagetina Jennifer Slater 1997-4-27 33 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  NY337163  Nemophila alata H. E. Brown 1897-3-3 173 Butte Clear Creek Comment
  JEPS115823  Nemophila heterophylla Lowell Ahart 2009-4-26 15641 Butte On the south of Guardians Trail, about 30 yards southwest 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
  RSA32941  Nemophila heterophylla A. A. Heller 1937-5-31 s.n. Butte Yankee Hill Comment
  CHSC39095  Nemophila spatulata Robert Schlising; R. Banchero 1980-6-2 3629 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  JEPS95923  Nicotiana acuminata var. multiflora Lowell Ahart 1999-8-13 8135 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-BC231530  Nicotiana glauca Lowell Ahart 1986-11-7 5415 Butte Along the Feather River, along the Oroville Gridley Highway, about 3 miles east of Gridley 28 Comment
  CHSC14106  Nicotiana quadrivalvis L. V. Ritter 1969-6-15 381 Butte Mand T Corporation Land, near Murphy Slough along bank of Sacramento River. Comment
  JEPS95801  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CAS-BOT-BC171464  Oenothera campestris Lowell Ahart 1988-5-30 6019 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  SEINET10453186  Oenothera hookeri Mary Susan Taylor 1975-10-4 Taylor 953 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
  CHSC54160  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte Joie Osgood Ranch, about 2 1/2 miles north and 3 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 91 Comment
  CHSC23669  Orobanche fasciculata M. S. Taylor 1976-4-27 1086 Butte Ca. 50 ft e of Cohasset Hwy, ca. 8 mi n of Chico. 137 Comment
  CHSC11801  Orthilia secunda E. B. Copeland 1930-8-7 434 Butte Jonesville. 1500 Comment
  RSA523836  Orthocarpus erianthus Gordon H. True Jr. 1936-3-26 375 Butte Gray Lodge Refuge. 23 Comment
  SEINET12328377  Orthocarpus lacerus M. S. Taylor, Oswald, V. 1984-1 5393 Butte S side of Humbug Rd, ca 2 mi SW of Nimshew, ca 12 air mi NE of Chico Comment
  SEINET10549698  Orthocarpus lithospermoides Mary Susan Taylor 1980-4-6 Taylor 2458 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
  POM86786  Oxalis albicans subsp. pilosa C. C. Bruce 1897-04 1852 Butte Butte Creek. Comment
  JEPS114193  Oxalis bowiei L. P. Janeway 2007-12-11 9224 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, west side Table Mountain Blvd bridge. Comment
  CHSC49843  Oxalis corniculata Vernon Oswald 1990-4-11 4162 Butte Upper Miocene Canal between Kunkle Reservoir and the jeep trail cutting down the slope above the West Branch of Lake Oroville. On the downhill side of the canal. 426 Comment
  UC1042339  Packera eurycephala var. lewisrosei Lewis S. Rose 1954-5-31 54085 Butte near Pulga; Feather River Canyon 396 Comment
  CAS-BOT-BC10502  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC47624  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte On bottom of North Honcut Creek, about 1 mile north and 2 1/2 miles east of Honcut. 42 Comment
  UCD89718  Panicum dichotomiflorum E. Wilson 1934-10-1 s.n. Butte Near Biggs. Comment
  CAS-BOT-BC253852  Panicum miliaceum Lowell Ahart 1988-8-10 6168 Butte On the S edge of Pentz Road, about 1 mile E of Highway 99 60 Comment
  CHSC44431  Parentucellia viscosa Lowell Ahart 1988-5-29 6008 Butte Near a small wash, about 1/10 mile north-east of the old barn, about 1/2 mile north-east of the Honcut Cemetary, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  JEPS120936  Parentucellia viscosa Lowell Ahart 2013-5-23 18706 Butte About 0.5 miles SE of the Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CAS-BOT-BC259621  Paspalum dilatatum John Thomas Howell 1959-9-20 34668 Butte Eastern outskirts of Oroville 60 Comment
  CHSC43276  Paspalum dilatatum Lowell Ahart 1987-8-30 5859 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS127627  Paspalum distichum B. Castro 2008-9-11 1774 Butte 10 air miles W of Gridley, 0.4 mi S of Gridley Rd., off SE bank of Cherokee Canal 0,2 mi NE of Sward bend in canal. Ca 40 feet out from levee toe. Comment
  SEINET10453507  Paxistima myrsinites Mary Susan Taylor 1981-5-29 Taylor 3811 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi SW of Coyote Gap, ca. 16 air mi N of Oroville. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 Comment
  CHSC11908  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC115190  Pectocarya pusilla Lowell Ahart 2015-4-27 20080 Butte Between the road and the stream, about 5 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
  CHSC45734  Pedicularis densiflora J. Marr 1988-3-31 17 Butte 1 mi n of Concow Rd, 6 mi w of Hwy 70, 18 mi n of Oroville. 609 Comment
  CHSC102398  Pellaea andromedifolia Lowell Ahart 2009-5-30 15781 Butte About 100 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
  CHSC28629  Pellaea mucronata M. S. Taylor 1979-3-19 1935 Butte Ca. 1 1/2 mi e of Pulga bridge on Hwy 70 over Feather River, ca. 25 mi n of Oroville. 487 Comment
  CDA35765  Pellaea mucronata J. R. Keck Jr. 1981-5-13 PDR# 330200 Butte Oroville. 0 Comment
  SEINET10529802  Pellaea mucronata Mary Susan Taylor 1983-1-17 Taylor 5216 Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  SEINET10867065  Pellaea mucronata Mary Susan Taylor 1979-3-19 Taylor 1935 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
  SEINET10931288  Penstemon azureus subsp. angustissimus Mary Susan Taylor 1981-5-11 Taylor 3688 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  RSA780098  Penstemon breviflorus subsp. glabrisepalus C. C. Bruce 1897-06 2008 Butte Little Chico. Comment
  NY600732  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  UC195477  Penstemon gracilentus A. A. Heller 1914-8-7 11664 Butte summit back Jonesville; summit back of Jonesville 2133 Comment
  POM252808  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte Along the Feather River Highway on roadside banks, 25 miles from Oroville. Comment
  UC726288  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 mi from Oroville; embankment on Feather Highway Comment
  UCD137724  Pentagramma pallida M. S. Taylor 1980-3-30 2413 Butte north side of Big Chico Creek, Diversion Dam, Upper Bidwell Park, Chico. 243 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
  CHSC32623  Pentagramma triangularis M. S. Taylor 1981-3-31 3464 Butte S side of Concow Rd, ca. 1/2 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC44617  Pentagramma triangularis subsp. semipallida Vernon Oswald 1984-4-9 1139 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC90140  Pentagramma triangularis subsp. triangularis Roberta A. Boer 1980-4-25 18 Butte About 1/4 mi north of Humboldt Road and 1.5 mi east of the junction of Hwy 32 and Hwy 99, about 2.0 mi east of Chico. 131 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
  CHSC38744  Perideridia kelloggii Vernon Oswald 1983-6-7 644 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  CHSC66659  Perideridia kelloggii Vernon H. Oswald; Lowell Ahart 1996-7-22 8089 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Near the SW corner of Tract 3.4, Sanctuary II, on the Llano Seco Ranch side of the refuge boundary. 32 Comment
  POM82580  Perideridia kelloggii C. C. Bruce 1897-06 2046 Butte Little Chico Comment
  HSC73010  Perideridia parishii subsp. latifolia M. S. Taylor, L. Ahart 1981-8-16 4204 Butte Jones Meadow, 3 mi. S of Philbrook Reservoir, 6 mi. NE of Stirling City 1829 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
  UCD99344  Persicaria amphibia Collector unknown 1927-12-16 1406 Butte Biggs Rice Station. Comment
  CHSC31763  Persicaria hydropiper L. Ahart 1977-9-20 1582 Butte Peter Ahart Ranch, Honcut, along edges of North Honcut Creek. 50 Comment
  CAS-BOT-BC413704  Persicaria hydropiper Lowell Ahart 1987-10-22 5921 Butte Along Oroville Chico Highway (149), 1/10 mile north-west of Highway 70 76 Comment
  CHSC37070  Persicaria hydropiperoides L. Ahart 1982-10-6 3847 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Along edges of North Honcut Creek. 50 Comment
  CAS-BOT-BC418952  Persicaria lapathifolia Lowell Ahart 1981-8-15 3041 Butte Snag Lake (about 3 miles south of Jonesville) 1524 Comment
  CHSC31771  Persicaria lapathifolia L. Ahart 1974-9-25 634 Butte Peter Ahart Ranch, Honcut. Garden weed. 45 Comment
  CAS-BOT-BC419174  Persicaria maculosa Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek 50 Comment
  CHSC110392  Persicaria punctata Lowell Ahart 2012-9-28 18461 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  JEPS120020  Persicaria punctata Lowell Ahart 2012-10-28 18523 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
  JEPS124336  Persicaria punctata Lowell Ahart 2015-10-16 20557 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  SJSU5411  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Honeyrun Rd between Chico & Paradise 487 Comment
  CDA3408  Petrorhagia dubia T. C. Fuller 1963-7-15 10856 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  SEINET11933238  Petrorhagia dubia Unknown 1984-1 14 Butte ca 0.75 mi NE of Centinnial and Manzanita avenues 70 Comment
  JEPS119538  Phacelia egena Lowell Ahart 2012-4-20 17891 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, west and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC105820  Phacelia mutabilis Lowell Ahart 2010-9-28 17269 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir. 1886 Comment
  CHSC39102  Phacelia mutabilis R. A. Schlising 1981-7-3 4128 Butte N part of county, E of Philbrook Reservoir. 1828 Comment
  UC196300  Phacelia purpusii A. A. Heller 1914-6-22 11486 Butte edge of n slope Little Summit 1463 Comment
  CAS-BOT-BC154304  Phacelia ramosissima var. ramosissima A. A. Heller 1914-7-2 11517 Butte [Canon] Canyon of Big Chico creek Comment
  CHSC8262  Phalaris caroliniana K. Henegar 1969-5-9 37 Butte 4 m N of Highway 162 on road Z. Rice lands. Comment
  CAS-BOT-BC250702  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 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
  CHSC66974  Phalaris paradoxa James D. Jokerst; Barbara Castro 1992-5-19 3354 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  CAS-BOT-BC77370  Philadelphus lewisii Grace Kermode 1899-6-1 s.n. Butte Chico Comment
  CHSC38676  Philadelphus lewisii Vernon Oswald 1983-5-27 562 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf course and the power lines. 121 Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  UC1609449  Philadelphus lewisii Lowell Ahart 1993-7-6 7060 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  RSA133220  Phoradendron bolleanum subsp. densum Del Wiens 1960-6-15 2727 Butte Near Magalia, just north of train depot. Comment
  UCR7829  Phoradendron densum Wm. Horn Jr. 1964-7-6 640706- 3 Butte Northern Sierra Nevada Mtns., 0.5 mi north of Magalia Train Station 716 Comment
  CAS-BOT-BC135129  Phoradendron juniperinum Lowell Ahart 1985-9-18 5169 Butte 2 miles W of Sly Creek Res. Tree was on lava soil on a lava cap, about 2 miles W of Sly Creek reservoir. E of the intersection of Golden Trout Crossing road on Reville Ridge 1000 Comment
  RSA754529  Phoradendron macrophyllum L. Ahart 2009-8-3 16255 Butte E side of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) W of Hwy 32, about 10 miles NE of Chico. 210 Comment
  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
  CDA9258  Physalis acutifolia D. G. Kelch 2006-8-2 6 .336 Butte Along Ord Ferry Rd. Comment
  CHSC64136  Physalis acutifolia B. Castro 1987-10-6 235 Butte At CSUC University Farm, along dirt road between berry vines and almond orchard. 45 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
  CHSC11342  Physalis philadelphica Lowell Ahart 1972-11-4 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS115350  Phytolacca americana Lowell Ahart 2009-7-3 15995 Butte On the east side of the road, 30 yards southeast of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 100 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS95155  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte Durham, Durham Elementary School Durham Elementary School; Durham, Durham Elementary School 57 Comment
  CHSC24561  Pieris japonica M. S. Taylor 1975-5-6 554 Butte Between Holt Hall and Butte Hall, near Little Chico Creek, California State University, Chico campus, Chico. 60 Comment
  CHSC46175  Pilularia americana Lowell Ahart 1980-5-10 2229 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC50635  Pilularia americana Lowell Ahart 1990-4-23 6465 Butte About 1/2 mile east of Larkin Road, about 1 mile south of the Oroville Airport. 45 Comment
  HSC66078  Pilularia americana M. S. Taylor 1980-3-28 2396 Butte E of Chico, NE corner of jct. of Notre Dam Blvd. and the Skyway, 1/8 mi. E of Hwy. 99 69 Comment
  CHSC32747  Pinus attenuata M. S. Taylor; L. Hanson 1981-4-16 3548 Butte Both sides of rd 21N80, ca. 1 mi nw of its jct with Zink Rd, ca. 1.5 air mi nw of Big Bald Rock, ca. 2 air mi e of Lake Madrone. 883 Comment
  RSA5147  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  SD13  Pinus lambertiana E. B. Copeland 1929-7-19 332 Butte Jonesville 1600 Comment
  CHSC27190  Pinus mugo P. Moyer 1971-10-24 45 Butte Front lawn Admin. Bldg. On CSUC campus. 60 Comment
  CAS-BOT-BC72807  Pinus sabiniana John Thomas Howell 1962-6-15 37432 Butte Sierra Nevada - Magalia 731 Comment
  SFV10661  Pinus sabiniana M. L. Vincent 1964-4-9 529 Butte Paradise. Clark road, 1 mile south of Pearson Road. Comment
  CHSC44449  Piperia transversa Lowell Ahart 1988-6-21 6053 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
  CHSC78349  Piperia transversa Lowell Ahart 2000-7-11 8570 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
  CHSC84186  Piperia transversa Lowell Ahart 2003-6-30 10328 Butte Near the small stream, on the south side of Ponderosa Way, about 2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 490 Comment
  CAS-BOT-BC254405  Piptatherum miliaceum Lowell Ahart; Jokerst 1985-5-10 4965 Butte About 0.25 mile W of a small stream, 0.5 mile S of Box Hall Flat, about 1 mile E of Potter Ravine, about 2.75 miles NE of Oroville Dam 350 Comment
  UC2026873  Pistacia atlantica Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18266 Butte Cedar Grove, south parking area, Lower Bidwell Park, Chico. Comment
  CDA43080  Pistacia chinensis L. P. Janeway 2011-9-12 10724 Butte Sacramento Valley.; North face of the levee on the south side of the Feather River about 250 m east of Centennial Park, Oroville. Comment
  SEINET10529839  Pityrogramma triangularis Mary Susan Taylor 1979-5-4 Taylor 1991 Butte T21N R6E sec 10. Millsap Bar Campground, ca. 9 mi NE of junction of Millsap Bar Road with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest with limestone outcrops. 1006 Comment
  SEINET10529969  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-5-4 Taylor 1996 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  UCD80165  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-15 SNFN 0082 a Butte City of Chico, Doe Mill Meadowfoam Preserve, near the NE corner of the reserve (~20 m from the east fence and ~40 m from the north fence. 81 Comment
  CHSC29049  Plagiobothrys canescens R. A. Schlising 1980-4-20 3569 Butte Between Singer Creek and Cana/Pine Creek Road. Comment
  HSC85966  Plagiobothrys fulvus J. Hunter 1986-3-5 21 Butte Ca. 1 km E Chico, 50 m S Hwy. 32 75 Comment
  CHSC43474  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-17 1826 Butte Along the edges of North Honcut Creek, about 1/4 mile north of Avocado Avenue and the bridge across North Honcut Creek, about 3 miles north-west of Bangor. 91 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
  UCD120878  Plagiobothrys greenei W. R. Powell 1968-4-23 1467 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC58891  Plagiobothrys hispidulus Lowell Ahart 1992-7-21 6822 Butte On a gravel bar along Coon Hollow Creek, about 2 1/4 (air) miles north-east of Philbrook Reservoir. 1706 Comment
  UC196309  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows w slope Sierra Nevada, Chico Meadows 1219 Comment
  CHSC167  Plagiobothrys nothofulvus Edna Canfield 1904-4-9 Butte Hooker Oak field 76 Comment
  CHSC39213  Plagiobothrys nothofulvus M. S. Taylor; K. Tarp 1983-3-12 5239 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  SEINET516433  Plagiobothrys scriptus Lowell Ahart 1977-1 1275 Butte Normal size plant, growing on damp to dry gravelly red soil along the edge of small swales, Peter Ahart Ranch, about 1 1/2 mi N and 1 mi. E of Honcut, about 12 mi S of Oroville. 37 Comment
  CHSC84126  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Road Boat Ramp, on the north side of the access road to the boat ramp at the Thermalito Afterbay, about 300 yards west of Larkin road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 38 Comment
  JEPS68118  Plagiobothrys shastensis R. F. Hoover 1938-4-24 3244 Butte 3 mi n Chico Comment
  CHSC113391  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2014-6-1 19533 Butte Manmade shallow duck field, about 50 yards south of Lower Honcut Road, about 50 yards west of the Railroad, about 1 3/4 miles (air) southwest of Honcut. 23 Comment
  CHSC46774  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1980-5-4 2176 Butte On the bottom of small vernal pools and along small washes, in a pasture, south-west of the intersection of Nelson Avenue and 20th Street in Thermalito. 60 Comment
  CHSC33687  Plagiobothrys tenellus L. Ahart 1981-3-29 2710 Butte Along edge of Ponderosa Way near the Ponderosa Dam, near Forbestown. 350 Comment
  CHSC39622  Plantago bigelovii Lowell Ahart 1983-4-10 3919 Butte South of a large wash, 1/10 mile east of the large barn, about 1 1/4 miles north-east of Hwy 99 and Pentz Road. 65 Comment
  CHSC42706  Plantago coronopus Lowell Ahart 1987-6-9 5745 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
  CHSC94050  Plantago coronopus R. D. Fischer 2005-5-18 724 Butte Sierra Nevada foothills, adjacent Hwy. 32, ca. 4 miles east of Chico in Bidwell Park. Plants growing on the ridge top at the south end of Humboldt Trail on the old roadbed. 426 Comment
  CHSC109178  Plantago elongata Lowell Ahart 2012-5-4 17981 Butte On the bottom and sides of a small vernal pool, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  CHSC111355  Plantago elongata Lowell Ahart 2012-5-4 17995 Butte On wet dark soil, on the sides of a drainage, about 1/2 mile southwest of the lone pine tree on the rim of Beatson Hollow, about 1 1/4 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 302 Comment
  CHSC24937  Plantago elongata Brad R. Parker 1976-4-23 Butte Ca. 13 mi nw of Chico and 25 yds s off Hwy 99, Broyles Rd intersection. 62 Comment
  CHSC24971  Plantago elongata T. F. Burnham 1976-4-20 11 Butte 50 ft s of Cana Pine Creek Road, at the intersection of 99 and Cana Pine Creek Road. 97 Comment
  CHSC31362  Plantago erecta W. F. Babb 1980-4-21 6 Butte On s side of Neal Rd. ca. 1.5 mi e of junction with Hwy 99E ca. 3 mi s of Chico. Comment
  UC1125624  Plantago erecta C. G. Albertus 1933-5-29 5 Butte 1.5 mi n Wick; Chico Quad. 60 Comment
  UCD80496  Plantago erecta CNPS SN Foothill Team 2005-4-14 SNFN 0033 c Butte Rock Ranch (private), in the NE corner of the horse pasture, ca. 10 m from the fence; west of the barn and house. 105 Comment
  RSA754384  Plantago lanceolata L. Ahart 2009-7-3 15989 Butte 10 yds north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yds east of Cedar Grove, Lower Bidwell park, Chico. 67 Comment
  SEINET10499809  Plantago lanceolata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4064 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
  SEINET10938438  Platanthera Mary Susan Taylor 1980-4-18 Taylor 2500 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
  CHSC26859  Platanthera leucostachys M. S. Taylor; M. Hayes 1978-6-24 1664 Butte On n side of Old Humbug Rd, across from Butte Meadows. 1371 Comment
  CHSC68911  Platanthera leucostachys Lowell Ahart 1997-7-11 7746 Butte Southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  UC1303143  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte on the road to golf links near Chico (near Sandy Gulch); near Sandy Gulch Comment
  RSA638253  Plectritis brachystemon Michael A. Vincent, Ethan H. Freid 1998-4-6 8119 Butte Table Mountain. Comment
  CHSC10701  Plectritis ciliosa Lowell Ahart 1968-4-1 Butte Peter Ahart Ranch, Honcut. Comment
  CHSC71532  Pleuricospora fimbriolata Vernon H. Oswald 1998-7-26 9365 Butte Colby Mtn. Lookout Rd. (26N57) 0.9 mi northwest of Humboldt Rd. at Jonesville. 1560 Comment
  HSC72943  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between FS 21N33 and 21N80, Galen Ridge, 1 mi. SW of Bald Rock Rd, 0.5 mi. N of Zink Rd., 2 mi. SW of Brush Creek. 1006 Comment
  CHSC42454  Poa annua Lowell Ahart 1987-5-6 5559 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC96379  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 35 Comment
  SEINET10508289  Poa bolanderi Mary Susan Taylor 1980-8-2 Taylor 3206 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC41433  Poa bulbosa Lowell Ahart 1986-4-4 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 67 Comment
  CHSC9281  Poa bulbosa D. C. Burns 1971-4-3 115 Butte On n side of Cohasset rd., ca. .5 mi e of the intersection of Cohasset rd. and Vilas rd. 365 Comment
  CAS-BOT-BC255065  Poa compressa Lowell Ahart 1989-5-28 6286 Butte S of Oregon Gulch Road, about 0.5 miles N of the Cementary, about 1.25 miles W of Rocky Point, about 10 miles E and 3 miles N of Oroville 335 Comment
  CHSC54354  Poa compressa Lowell Ahart 1991-6-22 6665 Butte On the west side of Powell Creek, below the high water line of Lake Oroville, east of Springtown Road, Lake Oroville. 243 Comment
  UC1586632  Poa compressa Lowell Ahart 1991-7-22 6665 Butte e of Springtown Rd Lake Oroville (w side of Powell Creek) 243 Comment
  UCD90922  Poa cusickii subsp. epilis R. M. Austin 1899-7-1 535 Butte Calby. Comment
  CAS-BOT-BC255973  Poa pratensis Lowell Ahart 1980-5-17 2275 Butte 1/2 mile south-east of Hurleton 600 Comment
  CHSC4373  Poa pratensis M. M. Gregg 1966-4-25 94 Butte Between Ed-Psy. Building and the Life Science Building, in a vacant lot, on CSC campus, Chico. Comment
  RSA718081  Poa pratensis L. Ahart 2006-7-16 12973 Butte About 20 yards east of the poor dirt road, About 100 yards south of the cabin, About 0.75 mile (air) northwest of Jonesville, About 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC31931  Poa pringlei J. D. Jokerst; L. Ahart, M. S. Taylor 1980-8-2 1034 Butte Humboldt Peak, ca. 1/4 mi. below and E of summit, northern most portion of Butte Co. 1828 Comment
  UCD90391  Poa secunda E. B. Copeland 1943-7-13 s.n. Butte Butte Meadows. Comment
  CHSC101298  Poa secunda subsp. secunda Lowell Ahart 2009-4-22 15599 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
  CHSC29742  Poa secunda subsp. secunda J. D. Jokerst 1980-4-21 632 Butte Top of North Table Mt., several miles N of Cherokee Rd. 457 Comment
  CHSC6070  Poa secunda subsp. secunda B. Wilson 1968-4-19 Butte 2 mi s of Cherokee on Table Mountain. Comment
  CHSC85416  Poa secunda subsp. secunda John Dittes 1992-5-5 466 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  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
  UC821116  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 mi n Chico 64 Comment
  UC1988910  Pogogyne douglasii Robert F. Hoover 1936-5-20 1155 Butte ten miles southwest of Oroville Comment
  SEINET10498986  Pogogyne douglasii Mary Susan Taylor 1975-4-29 Taylor 538 A Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CHSC67524  Pogogyne zizyphoroides James D. Jokerst 1992-4-14 Butte Stone Ridge Ranch (Jon Bechtel property) E of Cohasset Hwy. and Chico Municipal Airport. Comment
  SEINET10968992  Pogogyne zizyphoroides Mary Susan Taylor 1975-4-29 Taylor 538 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  HSC72951  Polanisia dodecandra subsp. trachysperma M. S. Taylor 1980-8-15 3255 Butte S side of Neal Rd., 0.1 mi. E of its junction with Hwy. 99, 7 mi. S of Chico 61 Comment
  CHSC40790  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 5041 Butte Sidewalk on the east side of Cherry Street, between 9th. and 8th. Street, Chico. 60 Comment
  CAS-BOT-BC167547  Polygala cornuta var. cornuta John Thomas Howell 1955-6-14 30449 Butte Magalia 731 Comment
  CAS-BOT-BC6544  Polygala cornuta var. cornuta Amos Arthur Heller 1914-7-24 11624 Butte near Forest Ranch 731 Comment
  UC1130354  Polygala cornuta var. cornuta P. L. Johannsen 1936-7-29 973 Butte 1 mi n junction of Butte and Secret Creek; Paynes Creek Quadrangle Comment
  CDA31969  Polygonum arenastrum L. Ahart 2009-6-12 15846 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC413924  Polygonum aviculare subsp. aviculare Lowell Ahart 1980-5-10 2232 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC109135  Polygonum bidwelliae Lowell Ahart 1980-5-11 2239 Butte 0.5 mile southwest of Kunkle Res. 500 Comment
  CAS-BOT-BC109139  Polygonum bidwelliae L. P. Janeway; B. Castro 1992-5-16 4186 Butte Unnamed canyon on southeast side of Neal Road opposite the entrance to the Butte County Land Fill. 68 Comment
  JEPS117267  Polygonum bidwelliae Lowell Ahart 2010-5-14 16642 Butte On the bottom of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  JEPS50603  Polygonum bidwelliae C. C. Parry 1887-1 Butte Chico Comment
  CHSC28773  Polygonum bolanderi J. D. Jokerst 1979-9-22 355 Butte 50 yds. N. of Humboldt Rd., 2.0 mi. N.E. of intersection with Hwy. 32. 1371 Comment
  CHSC102160  Polygonum californicum Lowell Ahart 2009-6-3 15835 Butte On dry rocky soil, on the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  UC849190  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte e Chico; Canyon of Chico Creek Comment
  UC1586531  Polygonum hydropiperoides Lowell Ahart 1991-9-14 6716 Butte about 2 mi e Honcut (sides of a large reservoir); Joie Osgood Ranch 45 Comment
  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
  CDA13840  Polygonum punctatum G. F. Hrusa, T. D. Wilfred 1996-9-5 13568 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  SEINET10871633  Polygonum scabrum Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5161 Butte T17N R1E s/nw sec 15. Pennington quad. Graylodge Wildlife Refuge, on n side of loop rd w of HQ, ca. 12 mi sw of Gridley. 60 ft. 18 Comment
  CAS-BOT-BC71862  Polypodium californicum Rod O'Sullivan 1977-2-12 4 Butte Little Chico Creek Canyon, 9.2 mi NE of Chico on Hwy 99 and 1 mi E of Tenmile House, Paradise Quadrangle, 15' 268 Comment
  SEINET10530406  Polypodium californicum Mary Susan Taylor 1979-11-15 Taylor 2287 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  CDA5623  Polypogon interruptus L. Ahart 2005-4-14 11720 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. Comment
  JEPS107782  Polypogon interruptus Lowell Ahart 2005-5-2 11779 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
  JEPS114961  Polypogon interruptus Lowell Ahart 2008-5-12 14741 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam 258 Comment
  CHSC71270  Polypogon maritimus Lowell Ahart 1998-7-1 8028 Butte On the bottom and sides of a wash, 20 yards south of a east west fence, at a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CDA2349  Polypogon monspeliensis T. C. Fuller 1962-5-17 8721 Butte Highway 99E, 14.5 miles northwest of Chico. 0 Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side 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 209 Comment
  RSA724943  Polystichum imbricans subsp. imbricans L. Ahart 2006-10-8 13442 Butte Steep area about 10 yards below and on the southwest side of Highway 70, east of the north Fork of the Feather River, about .5 mile north of Cresta Power house. 610 Comment
  UCD136541  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  SD5045  Porterella carnosula E. B. Copeland 1929-7-29 Butte Above Jonesville 1750 Comment
  CHSC42011  Portulaca oleracea Lowell Ahart 1986-11-3 5414 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET10501686  Potamogeton crispus Mary Susan Taylor 1979-10-2 Taylor 2216 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  JEPS120837  Potamogeton foliosus subsp. foliosus Lowell Ahart 2013-7-6 18823 Butte Peter Ahart Ranch, about 1.75 miles north and 1.5 miles east of Honcut, about 12 air miles southeast of Oroville. Comment
  SBBG128732  Potamogeton foliosus subsp. foliosus L. Ahart 2013-7-6 18823 Butte waterhole, Peter Ahart Ranch, ca. 1 3/4 mi N and 1 1/2 mi E of Honcut, ca. 12 mi (air) SE of Oroville 37 Comment
  POM193390  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  CAS-BOT-BC453686  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville 1700 Comment
  CHSC45739  Potentilla glandulosa subsp. ashlandica L. P. Janeway 1987-6-27 2366 Butte Near creeklet on E slope of Bald Mtn. 1706 Comment
  CHSC45583  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-10 2041 Butte Near PG and E ditch ca 3/4 mi north of DaSAbla Res. at crossing of rd to Forks of Butte (Doe Mill Rd). 853 Comment
  CHSC50560  Potentilla norvegica Vernon Oswald 1990-7-9 4356 Butte Paradise Lake, ca. 3 mi north of Magalia. On the bank of Mosquito Creek, just below the high-water line of the lake. 775 Comment
  CAS-BOT-BC64614  Primula suffrutescens R. A. Schlising; R. Preston; R. Banchero; D. Burk 1981-7-21 s.n. Butte SE. of Jonesville in ne. part of county, on ridgetop of Snow Mountain. 2103 Comment
  CHSC31789  Prunella vulgaris var. lanceolata L. Ahart 1977-6-3 1407 Butte Peter Ahart Ranch, Honcut. Along edges of North Honcut Creek. 50 Comment
  CHSC776  Prunella vulgaris var. lanceolata R. M. Staley 1952-7-1 Butte Honey Run. 182 Comment
  JEPS121993  Prunella vulgaris var. lanceolata Lowell Ahart 2014-7-13 19665 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SFV16940  Prunella vulgaris var. lanceolata J. N. Hogue 1980-9-6 83 .5 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC101815  Prunella vulgaris var. vulgaris Lowell Ahart 2009-6-12 15839 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC94461  Prunus Lowell Ahart; Mike G. Womack 2006-8-29 13241 Butte Near pump 24, about 1/4 mile southwest of Parking Lot 9, about 1 1/2 miles east of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area). 21 Comment
  CHSC38929  Prunus cerasifera Vernon Oswald 1983-3-4 105 Butte Collected in an almond orchard at the s-e corner of Alamo and East Avenues, Chico. 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
  CHSC111154  Prunus persica Lowell Ahart 2012-6-14 18183 Butte Near the intersection of Arbutus and Vallombrosa Avenue, Lower Bidwell Park, Chico. 63 Comment
  JEPS121888  Pseudognaphalium beneolens Lowell Ahart 2014-11-17 19909 Butte Just below the high water line of Lake Oroville, about 50 yards west of the Enterprise Boat Launch Area, about 11 miles (air) northeast of Oroville. Comment
  CHSC39347  Pseudognaphalium luteoalbum Lowell Ahart 1983-6-26 4151 Butte Along the edge of Ponderosa Way, about 1 1/2 miles south-east of the East Fork of Canyon Creek, about 14 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC94620  Pseudognaphalium luteoalbum Lowell Ahart 2006-9-11 13276 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC80090  Pseudotsuga menziesii John Thomas Howell 1962-6-15 37434 Butte Magalia 731 Comment
  CHSC103937  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-22 16723 A 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
  CHSC29848  Psilocarphus oregonus K. R. Stern 1979-5-23 6613 Butte Ca. 5 mil SW of Paradise. 182 Comment
  CAS-BOT-BC361920  Psilocarphus tenellus A. A. Heller; H. E. Brown 1902-5-12 5536 Butte Grade between Clear Creek and Paradise Comment
  CHSC25482  Psilocarphus tenellus var. globiferus L. Ahart 1977-4-15 1300 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38662  Ptelea crenulata Vernon Oswald 1983-5-1 403 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 2000 ft W of Brown's Hole. 170 Comment
  JEPS119981  Ptelea crenulata Lowell Ahart 2012-4-30 17931 Butte On both sides of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House Road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  UC109313  Ptelea crenulata R. M. Austin May 1883 263 Butte Comment
  CAS-BOT-BC72549  Pteridium aquilinum Lowell Ahart 1983-9-21 4463 Butte along French Creek, about 3 miles north of the Sky Creek Dam, north of Strawberry Valley 900 Comment
  CHSC20254  Pteridium aquilinum var. pubescens W. E. Hartman 1972-4-29 2 Butte Along road side opposite Centerville Cemetary. 213 Comment
  RSA105838  Pterostegia drymarioides R. M. Austin 1883-05 27 Butte Chico Creek 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
  CHSC97336  Pycnanthemum californicum L. P. Janeway 2007-8-6 9152 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Large patch of this on slope next to east side of pond. 776 Comment
  CHSC20490  Pyrola aphylla M. S. Taylor 1975-6-30 813 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC25261  Pyrola aphylla M. S. Taylor 1977-6-26 1387 Butte On n side of Ponderosa Way, ca. 1 mi e of Cohasset. 762 Comment
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  CHSC46586  Pyrola asarifolia subsp. asarifolia V. Oswald; L. Ahart 1989-7-21 3880 Butte Meadow paralleling Humbud Rd, just ne of the West Branch of the Feather River, ca. 0.5 mi ne of Snag Lake, ca. 2.5 mi (air) se of Jonesville. 1780 Comment
  SEINET8399930  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville. 1600 Comment
  RSA0083379  Pyrola picta Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10973482  Pyrola picta Lowell Ahart 1985-6-17 Ahart 5052 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CDA13273  Pyrola picta var. dentata G. F. Hrusa, T. D. Wilfred 1996-7-9 13121 Butte Plumas National Forest; Above Jordan Creek, above falls before confluence with Marble Creek. Comment
  HSC104019  Quercus X morehus L. Ahart 2012-3-23 17799 Butte About 5 air mi. NE of Chico, ~ 50 yds. W of Hwy. 32; on the south side of the Old Humboldt Road cut, north end of the Disc Golf Area 395 Comment
  JEPS119837  Quercus X morehus Lowell Ahart 2012-3-23 17799 Butte On the south side of the Old Humboldt Road cut, north end of Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. Comment
  JEPS46211  Quercus X morehus W. I. Follett 1934-7-8 Butte Bidwell Bar Comment
  JEPS115052  Quercus berberidifolia Lowell Ahart 2007-11-3 14551 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 322 Comment
  UCR237301  Quercus douglasii George K. Helmkamp, E. A. Helmkamp 2012-4-14 18758 Butte Northwestern Sacramento Valley, Cox Lane, 1.3 miles west of its intersection with La Loma Way, c. 10.3 mi. ENE (82 deg. ) of Gridley 91 Comment
  CAS-BOT-BC86115  Quercus dumosa A. A. Heller 1916-9-8 12649 Butte Ten mile house E of Chico Comment
  CAS-BOT-BC79605  Quercus durata Clarence R. Quick 1961-9-21 61 -38 Butte West Branch of N. 7 k. of Feather River 182 Comment
  JEPS37799  Quercus kelloggii W. L. Jepson 1936-8-7 17857 Butte Butte Creek (upper) Bear Buttes Comment
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Apr 5 2012
  JEPS95964  Quercus kelloggii Lowell Ahart 1999-6-12 8084 Butte North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  CHSC96641  Quercus lobata Lowell Ahart 2007-3-28 13601 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 51 Comment
  LA16863  Quercus lobata C. B. Wolf; E. R. Johnson 1931-6-28 6162 Butte 3 mi out of Chico 60 Comment
  CHSC27189  Quercus suber P. Moyer 1971-10-2 30 Butte CSUC campus. E parking lot of E.J.H. Bldg. 60 Comment
  CAS-BOT-BC104489  Quercus vacciniifolia Vernon Oswald; Lowell Ahart 1987-8-5 3177 Butte Near Humboldt Peak. 2148 Comment
  CAS-BOT-BC104692  Quercus wislizeni Lowell Ahart 1979-5-12 s.n. Butte along bands of N Honcut Creek. Peter Ahart Ranch, Honcut 50 Comment
  UC5844  Quercus wislizeni Chas. Howard Shinn 1894-11-26 Butte Chico Comment
  CHSC48694  Ranunculus alismifolius var. alismellus Vernon Oswald 1984-6-11 1281 Butte Near Humboldt Rd. at Butte Creek, 0.2 mi w of Cherry Hill Campground. Edge of meadow. 1414 Comment
  CHSC30380  Ranunculus aquatilis var. capillaceus J. D. Jokerst 1979-3-20 1148 Butte Top of North Table Mt., ca. .5 mi N of the jct of Cherokee Rd and the E edge of Mt. 396 Comment
  CHSC23896  Ranunculus arvensis Fred Michaelis 1975-4-22 314 Butte Ca. 0.2 mi e of Hicks Ln., ca. 0.6 mi s of Keefer Rd., ca. 6.5 mi n-nw of Chico, near creek. 76 Comment
  CHSC45398  Ranunculus arvensis Lowell Ahart 1977-4-28 1331 Butte In oat field, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 39 Comment
  CAS-BOT-BC378955  Ranunculus bonariensis Lowell Ahart 1974-4-11 s.n. Butte Honcut 46 Comment
  CHSC61609  Ranunculus canus A. A. Heller 1926-3-31 13916 Butte At Nelson, 14 miles south of Chico. Comment
  CHSC33969  Ranunculus flammula M. S. Taylor; L. Ahart 1981-8-15 4188 Butte N end of Snag Lake; e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  SEINET12094428  Ranunculus hebecarpus Unknown 1982-1 100 Butte Near Chico in Upper Bidwell Park, T22N, R2E, sec. 8 152 Comment
  RSA754961  Ranunculus muricatus L. Ahart 2009-5-15 15698 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
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  UCD96248  Ranunculus muricatus W. R. Powell 1968-4-24 1476 Butte 1.5 miles northwest of Browns Valley off Spring Valley Road. 131 Comment
  CHSC46848  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 249 Butte S part of county, ca. 1.5 mi s of Hurleton. Comment
  CHSC52690  Ranunculus occidentalis var. occidentalis Kirsten Tarp 1983-4-3 257 Butte On Bangor Pk Rd, 0.8 mi from jct with Bangor Hwy. Comment
  POM268835  Ranunculus populago H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  CAS-BOT-BC59881  Rhamnus ilicifolia Lowell Ahart 1989-5-29 6303 Butte Along Robinson Mill Road, about 1.5 mi. s. of Forbestown Road. 670 Comment
  CHSC20002  Rhamnus tomentella subsp. tomentella M. S. Taylor 1975-1-16 373 Butte Ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  CHSC5979  Rhaphiolepis indica M. MacArthur 1968-6-12 140 Butte Just outside NW side of Biology Stockroom in LS bldl, along paved path, Chico State College campus. 60 Comment
  CHSC84696  Rhus ovata Gavin Blosser 2003-9-16 Butte Northern Sierra Nevada Foothills. Between an un-used parking lot along Oroville Dam Blvd. and the Palermo Canal, 1460 ft west of the southeast end of Oroville Dam. 182 Comment
  CHSC44065  Rhynchospora californica L. P. Janeway 1988-5-30 2714 Butte Cyn of Big Chico Cr; upper Bidwell Park, 3.7 mi along Upper Park Rd from Wildwood Ave. Seep above Salmon Hole. 161 Comment
  CHSC96315  Rhynchospora capitellata L. P. Janeway 2006-8-12 8849 Butte Northern High Sierra Nevada. Large soggy meadow opening along an upper western branch of Keyser Creek; 0.7 km southeast of Bald Mountain summit. 1681 Comment
  SBBG28486  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Kirby's Meadow 1800 Comment
  RSA0020932  Ribes inerme E. B. Copeland 1931-5-9 646 Butte Jonesville. 1500 Comment
  CAS-BOT-BC212670  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC32683  Ribes nevadense M. S. Taylor 1981-3-24 3446 Butte S side of Hwy 70 in immediate vicinity of Poe Dam ca. 1 mi n of Pulga. 487 Comment
  SD2135  Ribes roezlii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  SEINET13942773 Image available Ribes roezlii A. A. Heller 2015-1 11031 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CHSC87414  Ribes roezlii var. roezlii R. D. Fischer 2004-2-28 121 Butte Sierra Nevada range, between Chico and Forest Ranch, west side of Hwy 32. Located within Big Chico Creek Ecological Reserve. Access at gated and paved roadway, which is approx. 1 mile south of main entrance (14 Mile House Road). West side, at end of access road. 544 Comment
  LA205438  Ribes viscosissimum A. A. Heller; 1915-6-26 10232 Butte Sierra Nevada, summit above Jonesvillle 2133 Comment
  CHSC31812  Robinia pseudoacacia L. Ahart 1975-5-3 748 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC74465  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6451 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  SEINET10940298  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1985-4-20 Ahart 4877 Butte On the floor of a rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. Comment
  RSA768992  Rorippa palustris subsp. occidentalis L. Ahart 2010-4-7 16575 Butte Sides of a deep ditch on south side of Biggs Princeton Road, about 100 yards west of the intersection of Biggs Princeton Road and Riceton Highway, about 1.25 miles northwest of Biggs. 32 Comment
  CHSC103168  Rosa californica 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
  JEPS117312  Rosa multiflora 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico 74 Comment
  CAS-BOT-BC148316  Rosa pisocarpa A. A. Heller 1913-6-7 10801 Butte Near Stirling 1074 Comment
  CHSC102409  Rosa pisocarpa subsp. ahartii Lowell Ahart 2009-6-19 15921 Butte On dry soil, on the east side of Big Chico Creek, southwest of the meadow, about 30 ayrds 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
  OBI72023  Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Black Bart Rd 1.3 mi from lower jctn with Forbestown Rd, ca 10 airmiles ESE of Oroville, 39 deg. 29.060'N 121 deg. 21.634'w 655 Comment
  UC1862495  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 b Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  UC1926782 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC27239  Rosmarinus officinalis P. Moyer 1971-9-26 10 Butte CSUC Campus. SE corner of cafe annex. 60 Comment
  UCD92292  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Butte County. Comment
  CHSC43233  Rotala ramosior Lowell Ahart 1987-9-4 5879 Butte On the bottom of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 mile seast of Honcut, about 12 miles south-east of Oroville. 67 Comment
  JEPS98345  Rotala ramosior Lowell Ahart 2000-8-28 8667 Butte 6 air miles SW of Oroville (Oroville Wildlife Area, about 1/2 mi W of Oak Grove and Hwy 70, NW edge of large man made lake) 42 Comment
  CHSC45803  Rubus armeniacus L. P. Janeway 1987-6-13 2198 Butte Flea Valley; 0.2 mi W on the Flea Valley Rd from the Concow Rd. At edge of rd. 1127 Comment
  UCD166765  Rubus armeniacus Marcel Rejmanek 2016-10-6 2161 a Butte By Highway 99, ca 200 m south from the intersection with the West Hamilton Rd. Comment
  CAS-BOT-BC156614  Rubus bifrons John Thomas Howell 1962-6-15 37453 Butte Magalia 731 Comment
  JEPS98517  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC48872  Rubus parviflorus Vernon Oswald 1984-5-23 1206 Butte Calif. Hwy 70 at Heinz Creek, 0.5 mi n-e of Poe Power House. Near the creek. 463 Comment
  SEINET10483593  Rubus parviflorus Mary Susan Taylor 1976-5-5 Taylor 1112 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  UCD89070  Rubus pensilvanicus Lindsay Clark 2008-5-30 BWP 19 Butte Bidwell Park in Chico, off of parking lot H (Day Camp), follow Yahi trail southwest. Next to creek. 88 Comment
  CHSC42426  Rubus ursinus Lowell Ahart 1987-4-30 5489 Butte On the banks of North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC45819  Rubus ursinus L. P. Janeway 1987-5-10 2033 Butte Near beginning of Butte Cr Tr, downstream of Forks of Butte and of the bridge (Doe Mill Rd). 640 Comment
  CHSC31944  Rumex acetosella J. D. Jokerst 1979-5-2 1223 A Butte Top of North Table Mt., ca 100 m N of Cherokee Rd. where it intersects the E edge of mountain. 396 Comment
  CHSC32114  Rumex acetosella L. Ahart 1977-5-2 1346 Butte On banks of North Honcut Creek, 3 mi ne of Honcut. 60 Comment
  SEINET10479372  Rumex acetosella Mary Susan Taylor 1978-7-21 Taylor 1806 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  CHSC100896  Rumex crispus R. A. Schlising; Lawrence Janeway 1988-8-2 4656 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CAS-BOT-BC433476  Rumex dentatus Lowell Ahart 1981-5-16 2804 Butte Gray Lodge, 11 miles southwest of Gridley. Gray Lodge Waterfowl Management Area. 35 Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  CHSC100906  Rumex salicifolius var. triangulivalvis R. A. Schlising 1988-7-16 4598 Butte Northern Butte County, west of Jonesville. 1524 Comment
  CHSC35703  Rumex salicifolius var. triangulivalvis J. D. Jokerst; M. S. Taylor, L. Ahart 1982-4-29 1546 Butte Grey Lodge Waterfowl Management Area, S of Rutherford Rd on dirt road. Comment
  UC1594709  Rumex stenophyllus Lowell Ahart 1992-5-23 6777 Butte about 0.5 mi s Butte City Highway (on the w side of Goodspeed Watt Road) 30 Comment
  CHSC98805  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville. 238 Comment
  JEPS122065  Sagina decumbens subsp. occidentalis Lowell Ahart 2014-5-21 19530 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  SEINET260325  Sagittaria greggii C. Wick 1988-6-17 sn Butte S of Grainland Rd W of Agua Fria Rd (Goodspeed Watt) Rd S of Dayton 40 Comment
  CAS-BOT-BC445782  Sagittaria longiloba Carl Wick 1988-6-17 s.n. Butte South of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton 39 Comment
  CHSC45310  Sagittaria sanfordii Vernon Oswald 1988-10-23 3709 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 57 Comment
  POM107313  Salix amygdaloides C. C. Bruce 1898-03 1788 Butte [Iron Canyon?] Comment
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Mar 5 2011
  UC478535  Salix boothii E. B. Copeland 1931-6-11 623 Butte Kirby's Meadow Jonesville (Field No. 314) 1750 Comment
  POM219139  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Jonesville. Kirby Meadows. 1829 Comment
  POM106846  Salix exigua C. C. Bruce 1897-05 1784 Butte Little Chico. Comment
  CHSC108837  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC38667  Salix exigua var. hindsiana Vernon Oswald 1983-5-25 551 Butte Upper Bidwell Park, Chico, 400 ft n of Upper Park Rd at Diversion Dam. 134 Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CHSC113289  Salix gooddingii Lowell Ahart 2014-4-9 19346 Butte Bottom of a shallow drainage, about 300 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  SEINET10539216  Salix hindsiana Lowell Ahart 1984-6-8 Ahart 4676 Butte Along the dirt road near the water tower, above the generator, ca. 1 mi E of Ponderosa Dam, ca. 2 mi N of Forbestown; Yellow Pine Forest; 475 m. 475 Comment
  CHSC102169  Salix laevigata Lowell Ahart 2009-6-19 15941 Butte On dry soil, open area north pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 232 Comment
  UC437331  Salix laevigata Mrs. R. M. Austin Apr. 1896 657 Butte Butte Creek Canyon Comment
  UC726400  Salix lasiandra subsp. lasiandra A. A. Heller 1919-5-17 13160 Butte Feather R. near Stirling; Feather R,. 975 Comment
  CAS-BOT-BC125177  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CAS-BOT-BC125178  Salix lasiandra var. lasiandra A. A. Heller 1914-7-23 11594 Butte On the headwaters of Chico Creek in Chico Meadows 1219 Comment
  CAS-BOT-BC125316  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  SD934  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville, alogs stream 1500 Comment
  CHSC21069  Salix lasiolepis M. S. Taylor 1974-4-26 525 Butte On se side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  CHSC65781  Salix lasiolepis Vernon H. Oswald 1996-4-10 7349 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the NE corner of Tract 4.2, Sanctuary 1. Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  JEPS119606  Salix lasiolepis Lowell Ahart 2012-4-9 17831 -A Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129578  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10695 Butte Hills, north side of the Feather River above Oroville Comment
  SBBG29070  Salix lemmonii E. B. Copeland 1931-8-1 Butte Jonesville 1700 Comment
  LA208913  Salix scouleriana E. B. Copeland; 1931-7-30 sn Butte Jonesville 1550.0 Comment
  CAS-BOT-BC129003  Salix sitchensis A. A. Heller 1913-6-7 10832 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CDA35057  Salpichroa origanifolia L. P. Janeway 2010-5-12 Butte Sacramento Valley; Chico; north side of Little Chico Creek 15-30 m east of Boucher Street bridge; narrow riparian strip between creek and Humboldt Road. Comment
  UC444996  Sambucus racemosa var. microbotrys E. B. Copeland July, 1930 Butte by Butte Creek; Jonesville 1500 Comment
  CAS-BOT-BC235069  Sambucus racemosa var. racemosa V. Oswald; L. Ahart 1988-7-26 3625 Butte Snow Mt. region located ca. 6 air mi se of Jonesville 2042 Comment
  UCD128003  Sanicula bipinnata M. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Rd, on Clark Road. Comment
  CHSC87802  Sanicula bipinnatifida Paul Maslin 2004-4-15 19 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610518E 4411342N. 316 Comment
  UCD72989  Sanicula bipinnatifida 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
  CHSC79646  Sanicula tuberosa G. F. Hrusa; T. D. Wilfred 1997-5-8 13749 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N; 121 34 W']. 740 Comment
  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
  POM82755  Sanicula tuberosa C. C. Bruce 1897-04 s.n. Butte Cherokee Comment
  CAS-BOT-BC466335  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CHSC24651  Saxifraga californica S. Deaton 1976-4-14 12 Butte 2 mi n of Feather Falls parking lot. 20 ft off s side of trail. 853 Comment
  SEINET10838427  Saxifraga fallax Mary Susan Taylor 1979-5-4 Taylor 1989 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  UC1602227  Saxifraga oregana H. F. Copeland 1920-7-12 358 Butte Jonesville 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
  RSA88186  Schedonorus pratensis J. T. Howell 1951-6-26 27520 Butte Big Bend Mt. 610 Comment
  POM312850  Schoenoplectus mucronatus H. L. Mason 1946-9-27 13135 Butte 3 miles west of Biggs. Comment
  CAS-BOT-BC123993  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  SEINET5276685  Scirpus diffusus Unknown 1929-7-19 343 Butte Jonesville Comment
  SEINET10466960  Scirpus tuberosus Lowell Ahart 1991-9-14 Ahart 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  SEINET10537483  Scleranthus annuus Lowell Ahart 1983-4-1 Ahart 3915 Butte In Dark Canyon along old Hwy 40 s of its jct with Hwy 70, ca. 4 mi s of Jarbo Gap, ne of Oroville. Foothill Woodland; 350 m. 350 Comment
  CHSC42735  Scleranthus annuus subsp. annuus Lowell Ahart 1987-5-6 5517 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CAS-BOT-BC239960  Scribneria bolanderi James Jokerst 1985-3-24 2172 Butte Near Serpentine Point 547 Comment
  CAS-BOT-BC239961  Scribneria bolanderi John Thomas Howell 1967-6-22 42617 Butte Magalia 701 Comment
  CHSC13812  Scribneria bolanderi D. McClain 1969-4-18 58 Butte 50 yds. n.w. of gate on Table Mountain, 5 mi. s.w. of Cherokee Rd. from its junction with Feather River Highway. 487 Comment
  CHSC30028  Scribneria bolanderi L. Ahart 1980-5-4 2173 Butte Pasture field southwest of the intersection of Nelson Ave and 20th, Thermalito. 65 Comment
  JEPS115817  Scribneria bolanderi Lowell Ahart 2009-4-26 15632 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, on the east side of Ten Mile House Road, just northeast of Guardians Trail 381 Comment
  SEINET11688353  Scribneria bolanderi Unknown 1985-1 4971 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road & Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  CHSC27917  Scutellaria californica M. S. Taylor 1978-7-19 1729 Butte Cherry Hill Campground on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC52199  Scutellaria californica L. P. Janeway 1988-5-29 2702 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CHSC56758  Scutellaria californica L. P. Janeway 1991-6-1 3984 Butte West-facing cut-bank of Dark Canyon Road 2.7 mi south of Big Bend Road/ Parkhill. 350 Comment
  SEINET10499137  Scutellaria californica Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4060 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
  CHSC52202  Scutellaria siphocampyloides L. P. Janeway 1989-5-19 3264 Butte Near upper SE branches of Rattlesnake Cr ca 2.3 road mi from bridge over W Br Feather River via the rd to Sawmill Pk. 807 Comment
  CHSC103229  Scutellaria tuberosa L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9978 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  CHSC24138  Sedella pumila B. Bunge 1976-3-3 1 Butte Ca. 100 yd e of Cherokee Rd on Table Mt. 6.5 mi n of Oroville. 396 Comment
  CHSC4472  Sedella pumila C. Glascock 1965-3-23 346 Butte Ca. 1 mi. S of US99E on Haille Rd., ca. 11 mi. NW of Chico. Near Butte-Tehama Co. border. Comment
  SBBG17329  Sedella pumila M. Vincent 1962-4-15 192 Butte Skyway, 4 mi W of Paradise, overlooking Butte Crk Cyn Comment
  SBBG70346  Sedella pumila A. A. Heller 1926-4-19 13923 Butte ca. 7 mi from Chico Comment
  CHSC3427  Sedum spathulifolium Judy Potter 1966-4-17 214 Butte Skyway, 6 miles NE Humbug Road. Comment
  CHSC87534  Sedum spathulifolium R. D. Fischer 2004-3-28 99 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail approx. 0.25 miles south of Pine Trail junction. Located on north facing cliff face. 396 Comment
  UC1410118  Sedum spathulifolium Elizabeth McClintock 1965-4-4 Butte canyon of the west fork of the North Ford of the Feather River canyon of the west fork North Ford Feather River 365 Comment
  UC306730  Selaginella hansenii Mrs. R. M. Austin May 1896 241 Butte Iron Canyon Comment
  CAS-BOT-BC363286  Senecio aronicoides E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  CHSC413  Senecio aronicoides M. Roberson 1956-4-23 Butte SW of Paradise along Skyway. 426 Comment
  UC492746  Senecio aronicoides E. B. Copeland 1931-6-22 Butte mountain top w of Big Summit; Jonesville 2200 Comment
  SEINET10474902  Senecio aronicoides Mary Susan Taylor 1981-4-16 Taylor 3546 Butte T21N R6E ne sec 30, Brush Creek quad. W side of 21N33Y.1, ca. 0.5 mi N of its jct with Zink Rd near Big Bald Rock, ca. 3 mi E of Lake Madrone, ca. 23 mi NE of Oroville. Yellow Pine Forest; 3400 ft. 1036 Comment
  JEPS115628  Senecio sylvaticus Lowell Ahart 2009-5-15 15692 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  SD5891  Senecio triangularis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  UC1070203  Senecio triangularis P. L. Johannsen 1936-7-17 941 Butte 3 mi se Butte Mdws.; Paynes Creek Quad. Comment
  CDA8687  Senecio triangularis T. C. Fuller 1962-7-12 9168 Butte 2 miles east of Butte Meadows. 0 Comment
  CHSC113926  Senecio vulgaris Lowell Ahart 2014-4-16 19358 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC41863  Senecio vulgaris Lowell Ahart 1986-11-7 5421 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC57122  Senecio vulgaris R. L. Ondricek-Fallscheer 1983-5-10 173 Butte In chicken pen of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 201 Comment
  CHSC65683  Senecio vulgaris Vernon H. Oswald 1996-3-22 7255 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CHSC92506  Senecio vulgaris Lowell Ahart 2005-12-11 12510 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  JEPS122269  Senecio vulgaris Lowell Ahart 2014-4-9 19329 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  CHSC3243  Sequoia sempervirens Virginia Hagaman 1966-2-21 24 Butte Chico State College Campus. Comment
  CDA4260  Sesbania punicea L. Ahart 2000-8-23 8660 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  CDA37215  Setaria parviflora CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  RSA0060809  Setaria pumila Lowell A. Ahart 2012-10-20 18493 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  SEINET10609515  Setaria pumila Lowell Ahart 1995-8-19 Ahart 7615 Butte T17N, R4E, south-east 1/4 Section 11. Normal size plants, on dry sandy soil, east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. Foothill Woodland. 37 Comment
  SEINET10507784  Setaria sphacelata Lowell Ahart 1985-10-12 Ahart 5199 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CAS-BOT-BC240190  Setaria viridis John Thomas Howell 1975-6-15 51062 Butte Chico 60 Comment
  CAS-BOT-BC240191  Setaria viridis John Thomas Howell 1959-9-20 34679 Butte Eastern outskirts of Oroville 60 Comment
  CHSC84901  Sidalcea asprella L. P. Janeway; John Hunt 2003-6-5 7813 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 635 m east of the south end of Bidwell Bar Bridge. 290 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
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  CHSC48609  Sidalcea calycosa Vernon H. Oswald 1984-4-1 1113 Butte Humboldt Rd, about mid-way between El Monte and Bruce roads, Chico. 79 Comment
  CHSC41889  Sidalcea gigantea Lowell Ahart 1986-8-15 5386 Butte Along a small stream, along the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  JEPS97944  Sidalcea gigantea G. Clifton 1999-7-3 36019 Butte Pulga Comment
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Feb 9 2008
  UC1609283  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte 6 air mi ne Feather Falls (w of the bridge across Fall River, large bar along Fall River); ne of Feather Falls, along Fall River 1036 Comment
  UCD116651  Sidalcea glaucescens H. F. Copeland 1930-7-20 s.n. Butte Jonesville. 1524 Comment
  SBBG17390  Sidalcea hartwegii M. Vincent 1962-4-17 199 -A Butte 4 mi S of Paradise at Kunkel reservoir Comment
  CHSC11786  Sidalcea oregana E. B. Copeland 1930-7-15 659 Butte Jonesville. 1500 Comment
  CHSC34951  Sidalcea oregana subsp. spicata R. A. Schlising; R. Banchero 1980-7-14 3900 Butte N end of Snag Lake in north of county. 1731 Comment
  CHSC43169  Sidalcea oregana subsp. spicata Robert Banchero; R. A. Schlising 1979-9-2 31 Butte Humbolt Rd at Butte Crk, 5.3 mi ne jct Hwy 32 and Humbolt Rd. 1341 Comment
  CHSC48613  Sidalcea oregana subsp. spicata Vernon Oswald 1983-8-4 951 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  SEINET9015716  Sidalcea robusta A. A. Heller, H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek. Comment
  CHSC11073  Silene laciniata subsp. californica Lowell Ahart 1966-5-10 Butte Bidwell Bar. 152 Comment
  CHSC38145  Silybum marianum J. D. Jokerst 1983-5-12 1756 Butte Top of North Table Mt. 426 Comment
  CHSC38047  Sinapis arvensis R. E. Preston 1983-1-9 377 Butte At roadside; jct Aguas Frias Rd and Richvale Rd, ca. 6 mi w of Richvale. 26 Comment
  CAS-BOT-BC75027  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 274 Comment
  CHSC118551  Sisymbrium altissimum Lowell Ahart 2017-4-22 21390 A Butte Where we park vehicals, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC35760  Sisymbrium altissimum R. E. Preston 1982-6-18 302 Butte In meadow; site of Merrimac, ca. 22 mi ne of Oroville. 1173 Comment
  CHSC10688  Sisymbrium officinale Lowell Ahart 1962-4-26 Butte Ahart Ranch, Honcut. 45 Comment
  CHSC11964  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville. 1500 Comment
  UC600565  Sisyrinchium bellum H. F. Copeland 1930-7-24 Butte Jonesville Comment
  POM253045  Sisyrinchium bellum A. A. Heller 1938-7-20 15285 Butte Upper end of Snag Lake, 7 miles east of Chaparral. 1524 Comment
  SEINET10472590  Smilacina stellata Mary Susan Taylor 1981-5-13 Taylor 3705 Butte T22N R6E se/se sec 5, Pulga SE quad. Jct of 23N15.5, 22N66X, and 22N40X, ca. 2 air mi S of Four Trees Rd, ca. 1 air mi W of Elks Retreat on Oroville-Quincy Hwy. 4200 ft. 1280 Comment
  SEINET10469849  Smilax californica Mary Susan Taylor 1975-6-25 Taylor 805 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  SEINET10872502  Smilax californica Mary Susan Taylor 1975-10-29 Taylor 972 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
  CHSC66084  Solanum americanum Vernon H. Oswald 1996-5-23 7633 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a branch of Angel Slough at the SE corner of Tract 1, Sanctuary I. 33 Comment
  JEPS120606  Solanum americanum Lowell Ahart 2013-11-13 19248 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. Comment
  UCD126974  Solanum parishii A. A. Heller 1915-4-12 11814 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  CAS-BOT-BC157602  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC41890  Solidago elongata Lowell Ahart 1986-8-15 5385 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City. 1615 Comment
  SEINET10474358  Solidago occidentalis Mary Susan Taylor 1975-10-3 Taylor 926 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  UC829904  Solidago velutina subsp. californica A. A. Heller 1916-9-23 12662 Butte near Forest Ranch; Sierra <Nevada> foothills Comment
  CHSC103696  Soliva sessilis Lowell Ahart 2010-5-14 16641 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 398 Comment
  CHSC65193  Soliva sessilis Lowell Ahart 1995-5-30 7575 Butte Along the edge of the dirt road, about 1/8 mile north of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 335 Comment
  CHSC8153  Sonchus asper Dave Isle 1969-5-17 479 Butte On meadow to N. of Upper Bidwell Park road just E. of Bare Hole turn-off. 59 Comment
  CHSC113306  Sonchus asper subsp. asper Lowell Ahart 2014-4-9 19334 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CAS-BOT-BC157206  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte West of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam 1005 Comment
  POM180916  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek. 1524 Comment
  CHSC51954  Sparganium emersum subsp. emersum L. P. Janeway 1987-6-19 2248 Butte Mdw on Pinkard Cr between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Rd and Travis Saddle via the rd to Golden Trout Crossing. 1082 Comment
  SEINET10537495  Spergula arvensis Lowell Ahart 1985-5-31 Ahart 5031 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CAS-BOT-BC390599  Spergularia rubra Lowell Ahart 1985-5-10 4942 Butte Along the edge of Cherokee Road, north of where the public parks, about 5 miles north of Oroville 450 Comment
  CHSC94495  Spiraea douglasii Lowell Ahart 2006-8-15 13184 Butte East part of a large meadow with bogs, 15 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
  CAS-BOT-BC149709  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  JEPS105915  Spiranthes stellata Lowell Ahart 2004-8-2 11325 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC60990  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte On the west side of Hatch Road (Goodspeed Watt Road), 8 miles west of Gridley. 21 Comment
  JEPS87381  Stachys ajugoides var. ajugoides Lowell Ahart 1993-6-19 6973 Butte 8 mi w Gridley (on w side of Hatch Road (Goodspeed Watt Road)) 21 Comment
  CHSC39969  Stachys pycnantha L. Ahart; P. Ahart 1983-8-10 4268 Butte Along La Porte Rd, ca. 4 mi ne of Bangor. 350 Comment
  SEINET12326786  Stachys pycnantha Unknown 1983-1 4428 Butte ca 0.12 mi NE of Kunkle Reservoir, S of Paradise 600 Comment
  CHSC52207  Stachys stricta L. P. Janeway 1988-6-26 2882 Butte SE rim of Coon Ridge, overlooking Nance Cyn; ca 0.6 mi NE of the power lines (high voltage). S-facing seep at the rim. 182 Comment
  UC1594538  Stellaria borealis subsp. sitchana Lowell Ahart 1992-8-2 6902 Butte about 3 air mi ne Concow Reservoir (on w side of Concow Meadow); Concow Meadow 1097 Comment
  UC1562306  Stellaria calycantha Vernon Oswald and Lowell Ahart 1990-7-19 4369 Butte ca 3 mi e Philbrook Reservoir (slope on s side of Philbrook Creek, ca 0.6 mi w of Plumas County line) 1981 Comment
  SEINET11934433  Stellaria crispa L. Ahart, Ahart, P. 1984-1 Butte About 1.5 mi SE of Bald Mt., 0.75 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  CHSC63810  Stellaria longipes var. longipes S. C. Morey 1983-8-1 665 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC90631  Stellaria media Lowell Ahart 2005-4-2 11689 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
  CHSC35038  Stellaria nitens R. Schlising; R. Banchero 1981-5-20 4066 Butte Lumpkin Ridge in E part of county. Comment
  CHSC39209  Stellaria nitens M. S. Taylor; K. Tarp 1983-3-12 5241 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  SEINET10866384  Stellaria nitens Mary Susan Taylor 1981-4-5 Taylor 3501 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
  CHSC42486  Stellaria obtusa Lowell Ahart 1987-5-6 5519 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC50823  Stephanomeria elata Vernon Oswald 1990-7-28 4402 Butte Doe Mill Rd (Ponderosa Way), 1.5 mi (odometer) southwest of Butte Creek Bridge, ca. 2 miles (air) east-northeast of Forest Ranch. Roadside. 847 Comment
  RSA0116254  Stipa nelsonii var. dorei Lowell A. Ahart 2014-7-10 19606 Butte On the east side of the Skyway, about 2 miles north of Stirling City. 1250 Comment
  CHSC4162  Streptanthus diversifolius R. Carter 1966-4-21 349 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; 10 yds. off E side Old Cherokee Rd., 6.55 mi. from Chico Rd. 274 Comment
  CHSC42200  Streptanthus diversifolius Victoria Lorber 1986-4-1 Butte Table Mountain, 6.4 mi n of Oroville on Cherokee-Table Mtn Road. 243 Comment
  SEINET11986398  Streptanthus diversifolius S. M. Grossberg 1978-1 10 Butte North Table Mountain, ca 1 mi NNE of Cherokee Rd, 6 mi N of Oroville 381 Comment
  CHSC93960  Streptanthus longisiliquus R. D. Fischer 2004-6-20 757 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 2 miles west of Butte Meadows on Humboldt Road. Plants collected roadside off eroded, gravelly volcanic soil. 1417 Comment
  SEINET10845509 Image available Streptanthus longisiliquus Glenn L. Clifton 1997-6-13 Clifton 35529 Butte .8 km north of Robley Point at about 3080 ft. in elevation, growing on a steep cut bank of the dirt road. 939 Comment
  CHSC36692  Streptanthus tortuosus R. E. Preston 1982-5-18 284 Butte On s side of Forbestown reservoir, ca. 4 mi ne of Forbestown. 579 Comment
  CHSC36697  Streptanthus tortuosus R. E. Preston 1981-6-16 89 Butte Top of Flea Mtn, ca. 9.5 mi ne of Paradise. 1280 Comment
  CHSC42697  Streptanthus tortuosus Lowell Ahart 1987-5-9 5597 Butte Along Pulga Road, about 1/2 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 miles south-west of Pulga. 365 Comment
  HSC32398  Streptanthus tortuosus Kitsy Kelly 1974-4-20 28 Butte Table Mtn. Volcanic area Comment
  UC956623  Streptanthus tortuosus Freed W. Hoffman 1949-5-14 2779 Butte crest of mt Table Mountain (on road to Oroville) 335 Comment
  CHSC46698  Subularia aquatica var. americana V. Oswald; L. Ahart 1989-8-22 3953 Butte Summit Lake on the n slope of Snow Mtn, ca. 4 mi (air) se of Jonesville. Along the nw edge of the lake. 1889 Comment
  RSA739732  Swertia albicaulis var. nitida L. P. Janeway, B. Castro 2007-5-6 8975 Butte Northern High Sierra Nevada, Ridge top along a side road N off the road from Sawmill Peak to Flea Valley, 1.8 air km NE of Sawmill Peak. 969 Comment
  UCSB13228  Swertia albicaulis var. nitida Dearing, Hugh; Dearing, Margaret 1938-6-21 Butte 21 mi. N. of Chico; nr. Lone Pine Lookout; Butte Co., Calif 1219 Comment
  CAS-BOT-BC234612  Symphoricarpos mollis Vernon Oswald; Lowell Ahart 1987-7-1 3055 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. On the w side of Scotts John Creek 1828 Comment
  CHSC42993  Symphyotrichum bracteolatum Lowell Ahart 1987-7-3 5784 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC46610  Symphyotrichum spathulatum var. intermedium Vernon H. Oswald 1989-7-27 3899 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) SE of Jonesville. 1767 Comment
  JEPS94309  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 1997-8-1 7784 Butte about 8 air mi ne of Stirling City (about 1/4 mi e of Table Mountain, near some small streamlets of Little Kimshew Creek in Snow Meadow); Snow Meadow 1524 Comment
  CAS-BOT-BC98374  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1987-11-24 5895 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of 271 Comment
  RSA715887  Tamarix parviflora L. Ahart 2005-4-2 11697 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC34795  Tauschia kelloggii M. S. Taylor 1980-5-8 2604 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC42501  Taxus brevifolia Lowell Ahart 1987-5-22 5682 Butte Near a dirt road, about 1/8 mile north-east of Feather Falls. 1219 Comment
  UC172889  Tetrapteron graciliflorum Mrs. R. M. Austin May 1896 825 Butte Chico Plains Comment
  UC569524  Thalictrum fendleri P. L. Johannsen 1936-7-17 948 Butte 3 mi se Butte Meadow; Paynes Creek Quadrangle 1554 Comment
  CAS-BOT-BC88232  Thysanocarpus curvipes James Jokerst 1985-3-24 2170 Butte Near Serpentine Point. 547 Comment
  JEPS108848  Thysanocarpus curvipes var. elegans Lowell Ahart 2006-5-8 12608 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 384 Comment
  JEPS104016  Thysanocarpus radians Lowell Ahart 2003-3-24 10023 Butte Fields, ca 50 yd n of the access road to the boat ramp at the Thermalito Afterbay, ca 200 yd w of Larkin Rd, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 48 Comment
  UCD128153  Torilis arvensis Joseph M. DiTomaso 1976-5-23 470 Butte Lake Oroville, peninsula at east end of lake. 274 Comment
  CHSC39321  Torilis arvensis subsp. purpurea Lowell Ahart 1983-6-2