Search Results — 2000 specimen records retrieved (1598 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3900  Abies concolor R. Carter 1966-7-31 498 Butte 17 mi NE of Oroville on W side of Big Bald Rock along E side of Big Bald Rock Rd. 1066 Comment
  UCD116173  Abutilon theophrasti P. B. Kennedy 1922-1 s.n. Butte Oroville. Comment
  CAS-BOT-BC330578  Acer circinatum Sally Bianco 1995-9-17 1026 Butte Near Camp Creek Rd., along Dogwood Creek. 1098 Comment
  CAS-BOT-BC331604  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canon of Big Chico creek along the stream. Comment
  SBBG128886  Acer negundo L. Ahart 2012-6-21 18222 Butte ca. 25 yards W of Freeway, 70 yards S of Big Chico Crk, Lower Bidwell Park, Chico 62 Comment
  CHSC65680  Acer negundo var. californicum Vernon H. Oswald 1996-3-22 7252 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, SW corner of Tract 2, on the edge of a branch of Angel Slough. 30 Comment
  CHSC20718  Achillea millefolium M. S. Taylor 1975-8-31 889 Butte Riparian woodland, on Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  SEINET10937970  Achillea millefolium var. lanulosa Mary Susan Taylor 1978-7-19 Taylor 1750 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC210632  Achnatherum lemmonii Lowell Ahart 1987-5-9 5583 Butte Along Pulga Road, about 1/4 mile west of Bardees Bar along the North Fork of the Feather River, about 2 1/2 miles south-west of Pulga 365 Comment
  CAS-BOT-BC210641  Achnatherum lemmonii John Thomas Howell 1962-6-16 37566 Butte Magalia 731 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
  CHSC39672  Achnatherum lemmonii Lowell Ahart 1983-6-21 4087 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 137 Comment
  CHSC102163  Acmispon americanus var. americanus Lowell Ahart 2009-6-19 15930 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC45909  Acmispon americanus var. americanus Lowell Ahart 1981-8-11 3025 Butte Along North Honcut Creek, about 1 mile north and 3 miles east of Honcut, Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  RSA0116257  Acmispon americanus var. americanus Lowell A. Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC113919  Acmispon argophyllus var. fremontii Lowell Ahart 2014-5-13 19460 Butte Below the high water line of Lake Orovolle, above the old paved road, about 150 yards west of the Enterprise Boat Ramp, about 11 miles (air) east of OrovIlle. Collected about 1/4 mile west of point above, according to label. 259 Comment
  CHSC30730  Acmispon argophyllus var. fremontii M. S. Taylor 1980-5-27 2665 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC42559  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, about 3 1/2 miles south-west of Pulga. 365 Comment
  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
  CHSC108834  Acmispon brachycarpus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC26793  Acmispon brachycarpus M. S. Taylor 1978-5-6 1571 Butte By RR tracks, Magalia. 609 Comment
  CHSC2833  Acmispon parviflorus David Prall 1965-4-25 30 Butte Growing on road-cut on north side of Humbug Rd. 0.3 mile swest of junction with Honeyrun Rd. (covered bridge). 152 Comment
  JEPS122195  Acmispon parviflorus Lowell Ahart 2014-4-15 19352 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC44395  Acmispon strigosus Lowell Ahart 1988-7-3 6116 Butte Along the road gutter, along the road to the generator at Ponderosa Reservoir, about 1 mile east of the Ponderosa Dam. 457 Comment
  CHSC45535  Aconitum columbianum var. columbianum Kirsten Tarp 1982-8-1 242 Butte E of Snag Lake. 1780 Comment
  CHSC52672  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-27 355 Butte N part of Butte County, n of Philbrook Reservoir, at Coon Hollow. Streamside. 1633 Comment
  CAS-BOT-BC412593  Aconogonon alaskanum E. B. Copeland 1930-8-4 628 Butte Jonesville 1500 Comment
  CAS-BOT-BC418777  Aconogonon phytolaccifolium H. F. Copeland 1920-8-29 140 Butte Jonesville 1219 Comment
  CHSC52113  Aconogonon phytolaccifolium L. P. Janeway 1988-7-29 3105 Butte Above bank of Butte Cr at Butte Meadows, crossing of Bull Hill Rd (The Skyway). 1325 Comment
  CHSC48682  Actaea rubra Vernon Oswald; Lowell Ahart 1987-7-1 3080 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the intlet of the large lake. 1935 Comment
  CHSC25039  Adiantum aleuticum W. E. Hartman 1972-4-29 7 Butte Ca. 500 ft. n up wash from Centerville Rd. at 0.8 mi e of Centerville Cemetery. 249 Comment
  SEINET10529974  Adiantum aleuticum Mary Susan Taylor 1976-5-5 Taylor 1117 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC3630  Adiantum capillus-veneris John Francis 1966-2-28 56 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  CAS-BOT-BC65557  Adiantum capillus-veneris M. S. Taylor 1979-10-3 2217 Butte s side of Butte Creek, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd., 243 Comment
  SEINET7728124  Adiantum emarginatum C. C. Parry 2000-1 Butte Chico Comment
  CDA1641  Aegilops cylindrica D. Conway Jun 1991 Butte Butte College campus, 3536 Butte Campus Drive, 4 miles east of Durham on Durham-Penz Road 0 Comment
  CDA1674  Aegilops triuncialis L. Ahart 2000-5-16 8357 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CHSC111138  Aegilops triuncialis Lowell Ahart 2012-6-5 18155 Butte Along the poor dirt road, 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. 298 Comment
  UCD51568  Aegilops triuncialis James Mallory 1967-6-14 269 Butte 10 miles s.e. Chico near jct. Pentz and Williams Road. Comment
  CAS-BOT-BC202591  Aesculus californica Lowell Ahart 1983-6-26 4112 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville 500 Comment
  CHSC90077  Aesculus californica Elizabeth A. Ballou 1991-4-23 7 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  SEINET10494576  Aesculus californica Melvin L. Conrad 1973-6-5 Conrad 7037 Butte Jarbo pass on hwy 70. Yellow pine, calif. Buckeye & shrubby lupine. Comment
  CHSC3137  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  JEPS87534  Ageratina occidentalis Lowell Ahart 1993-9-8 7167 Butte on top of ridge about 1/2 mi e Snow Mountain; e of Snow Mountain 2103 Comment
  CAS-BOT-BC29495  Agoseris Clare B. Hardham 1978-4-17 21564 Butte Humbery Road north of Paradise Comment
  CHSC44366  Agoseris grandiflora Lowell Ahart 1988-6-21 6054 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
  UC194711  Agoseris heterophylla var. cryptopleura A. A. Heller 1902-5-9 Butte near Clear Creek P. O. Comment
  CAS-BOT-BC447795  Agrimonia gryposepala Clarence Quick 1940-7-20 40 -96 Butte Big Bar Mt., E. of Feather River at Pulga; from Big Bar Lookout. 2-3 miles towards Brush Creek Comment
  CHSC31440  Agrimonia gryposepala L. Ahart 1980-7-29 2504 Butte Near Forbestown Rd, ca. 100 m e of the jct of Black Bart Rd and Forbestown Rd, ca. 1 mi w of Robinson Mill Rd, w of Forbestown. 750 Comment
  CHSC111146  Agrostis avenacea Lowell Ahart 2012-6-5 18167 Butte On the strand of the reservoir, north of Beatson Hollow, about 1 3/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  CHSC55462  Agrostis avenacea L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 38 Comment
  CHSC69711  Agrostis capillaris Lowell Ahart 1997-9-27 7915 Butte Back yard at the Ehmann Home, corner of Lincoln and Robinson Streets, Oroville. 51 Comment
  CHSC40447  Agrostis elliottiana Lowell Ahart 1985-5-22 5028 Butte Along the edge of Bean Creek Road, about 1/2 mile south-east of Little Bald Rock. 1066 Comment
  CHSC90993  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 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. 354 Comment
  CHSC47697  Agrostis exarata Lowell Ahart 1989-9-21 6397 Butte Along the west edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  UC1609262  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek) 1325 Comment
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  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
  CHSC102963  Agrostis pallens Lowell Ahart 2009-6-19 15929 Butte Meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC42402  Agrostis scabra Lowell Ahart 1987-6-9 5727 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC815077  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows 1280 Comment
  UCD53330  Agrostis scabra A. A. Heller 1917-7-26 12847 Butte Butte Meadows. 1280 Comment
  UC1586513  Agrostis thurberiana Vernon H. Oswald and Lowell Ahart 1991-8-19 4836 Butte n side Forest Rd. 25N15 (between Philbrook Reservoir and Coon Hollow) 1767 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
  CHSC111391  Aira caryophyllea Lowell Ahart 2012-5-2 17978 Butte On the south side of the paved road, about 100 yards southeast of the entrance to Upper Bidwell Park, about 1/4 mile east of Chico. 81 Comment
  CHSC30712  Aira caryophyllea M. S. Taylor 1980-5-27 2704 Butte Little Bald Rock, ca 3 mi s of Brush Creek. 1016 Comment
  CHSC6700  Aira caryophyllea Marilyn Lee 1968-4-19 127 Butte Side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards E. of cemetary, Table Mt. Comment
  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
  CHSC61339  Alisma lanceolatum Lowell Ahart 1993-7-13 7066 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS127629  Alisma lanceolatum B. Castro 2008-7-15 1760 Butte Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near junction of Cherokee Canal, Southern Pacific RR and the Biggs extension canal. Comment
  UCD137964  Alisma triviale F. N. Briggs 1931-8-1 2243 Butte Biggs. Comment
  CHSC36906  Allium amplectens Marc Hayes; R. Schlising 1978-5-22 3266 Butte NW part of county, n of Chico; along Cohasset Hwy, 4.3 mi n o f Mud Creek. Comment
  JEPS116048  Allium amplectens Lowell Ahart 2009-4-17 15560 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
  CAS-BOT-BC460734  Allium amplectens Lowell Ahart 1978-4-13 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC465436  Allium campanulatum A. A. Heller 1914-6-22 11480 Butte Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC466715  Allium cratericola Gladys L. Smith 1975-4-8 s.n. Butte Top of Table Mountain, between Cherokee and Oroville 847 Comment
  SEINET10971416  Allium cratericola Mary Susan Taylor 1980-4-21 Taylor 2563 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  JEPS110416  Allium jepsonii Lowell Ahart 2006-6-9 12657 Butte On the west side of Bardees Bar Road, north of the small stream, south of the large stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  CAS-BOT-BC472968  Allium membranaceum Lowell Ahart 1980-5-25 2342 Butte Along Ponderosa Way Comment
  CHSC118586  Allium obtusum var. conspicuum L. P. Janeway 2017-4-15 12187 Butte Northern High Sierra Nevada. Plumas National Forest; McNab Cypress Special Interest Area (a.k.a The Magalia Serpentine); between Coutolenc Road and West Branch Feather River. 541 Comment
  CAS-BOT-BC132115  Allium sanbornii var. sanbornii Lowell Ahart 1980-7-29 2501 Butte Along the edge of Forbestown Road Comment
  JEPS117691  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville 39 Comment
  CAS-BOT-BC274  Allocarya glyptocarpa Amos Arthur Heller 1914-3-16 11202 Butte Hills 8 miles N of Oroville Comment
  CHSC44409  Allophyllum divaricatum Lowell Ahart 1988-5-30 6021 Butte Cliffs, near the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 277 Comment
  CHSC26879  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville. 1625 Comment
  CHSC21021  Alnus rhombifolia M. S. Taylor 1975-10-4 961 Butte On se corner of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC83959  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC90834  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 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
  CHSC23423  Alopecurus saccatus P. Fehr 1974-4-23 14 Butte Collected along side of Keefer Rd., 8 mi e of junction with Hwy 99, ca. 10 mi n of Chico. 57 Comment
  CHSC54374  Alopecurus saccatus M. Bailey 1991-3-29 555 Butte Butte College campus. Ca 200 feet s of Wallis Pond e of Williams Road and ca 1/4 mi n of Pentz Road. 85 Comment
  UCD55921  Alopecurus saccatus L. Ahart 1982-5-10 3429 Butte Peter Ahart Ranch, ca. 2 mi NE of Honcut. 50 Comment
  CHSC6638  Amaranthus M. MacArthur 1968-6-16 337 Butte NW side of Aymer Jay Hamilton School, Chico State College campus. 60 Comment
  CDA3268  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte In the Lindo Channel Greenway where it crosses under Mangrove Avenue, Chico. Comment
  CHSC26667  Amaranthus albus M. S. Taylor; M. Hayes 1977-8-16 1442 Butte Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  RSA726362  Amaranthus albus L. Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincey Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville. 363 Comment
  CHSC113539  Amaranthus californicus Lowell Ahart 2014-9-23 19880 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CDA42944  Amaranthus deflexus L. Ahart 2012-10-2 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS102422  Amaranthus deflexus Lowell Ahart 2001-6-16 8845 Butte Edges of the lawn, at the Nature Center, west of the ''Deer Pen'', Chico. 60 Comment
  JEPS106013  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
  CHSC21247  Amaranthus retroflexus M. S. Taylor 1975-6-21 777 Butte In field at end of Citrus Ave, between 11th and 12th aves, Chico. 60 Comment
  CHSC76410  Amaranthus rudis Lowell Ahart 1999-10-28 8316 Butte West side of a large pond, large disturbed area along the east side of the Sacramento River, nnorthwest 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
  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
  SEINET10904994  Ambrosia psilostachya Mary Susan Taylor 1975-10-29 Taylor 977 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
  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
  UC1609150  Amelanchier utahensis Vernon H. Oswald and Lowell Ahart 1993-4-19 5285 Butte ene of Magalia (Rattlesnake Creek Trail, serpentine outcrop between Jordan Hill Rd and Sawmill Peak Lookout, between the creek and lookout) 774 Comment
  CHSC108142  Ammannia coccinea Lowell Ahart 2011-10-29 17719 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CDA36699  Ammannia coccinea Margaret Bellue 1947-8-23 Butte Afton Road near Biggs. 0 Comment
  UCD102882  Ammannia robusta E. M. Johnston 1915-7-1 s.n. Butte Biggs. Comment
  CHSC108839  Amsinckia eastwoodiae Lowell Ahart 2012-4-9 17821 Butte Along South Rim Trail, about 100 yards north of the homes, south part of Upper Bidwell Park, about 1/4 mile east of the power lines, about 1 1/4 miles (air) northeast of Chico. 154 Comment
  CHSC2811  Amsinckia intermedia David Prall 1965-3-14 3 Butte Along side of Neal Rd. 1 mile east of Highway 99E. 106 Comment
  JEPS108850  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  JEPS108925  Amsinckia intermedia Lowell Ahart 2006-4-23 12532 Butte On the east side of Cherokee Road, about 200 yards south of the cattle chute and parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 424 Comment
  SEINET10497092  Amsinckia intermedia Mary Susan Taylor 1974-3-5 Taylor 75 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  UC1178254  Amsinckia intermedia Francia Chisaki 1956-4-18 677 Butte 7.2 mi s Tehama-Butte County line 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
  CHSC44475  Amsinckia menziesii var. menziesii Lowell Ahart 1988-5-13 5999 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC65902  Anagallis arvensis Vernon H. Oswald 1996-4-20 7397 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Large population growing on a low levee in formerly irrigated pasture in the S paddock of Tract 7, Sanctuary II. 32 Comment
  SEINET10449591  Anagallis arvensis Mary Susan Taylor 1975-4-26 Taylor 517 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC37120  Angelica breweri L. Ahart 1982-9-13 3804 Butte Along edge of a dirt rd a little n of Lost Creek Reservoir Dam, ca. 2 mi nw of Strawberry Valley. 1100 Comment
  CHSC42569  Angelica californica Vernon Oswald 1985-6-6 1813 Butte Near Centerville Flume 0.5 mi downstream from its crossing on Humbug Rd. 341 Comment
  CAS-BOT-BC84696  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte Near Durham Comment
  CHSC10624  Anthemis cotula Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1950  Anthriscus caucalis A. Goekler 1929-5-15 Butte Bidwell Park. 60 Comment
  SEINET10547815  Antirrhinum breweri Mary Susan Taylor 1981-6-19 Taylor 3958 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  CHSC38682  Antirrhinum cornutum Vernon Oswald 1983-7-3 803 Butte Upper Bidwell Park, Chico, on the rim overlooking Sycamore Creek Canyon ca. 200 ft w of the e end of the North Rim Trail. 390 Comment
  UC336555  Antirrhinum cornutum Edw. L. Greene 1890-6-27 Butte Chico Comment
  CHSC99491  Antirrhinum leptaleum Lowell Ahart 2008-7-23 15155 Butte East side of Lumpkin Road, about 200 yards north of the intersection of Forbestown Road and Lumpkin Road, about 10 miles (air) north of Oroville. 513 Comment
  CHSC25337  Antirrhinum vexillo-calyculatum subsp. intermedium M. P. Hayes 1977-8-12 30 Butte 100 m from the intersection of Highway 70 and Pulga Raod. 426 Comment
  CHSC78166  Antirrhinum vexillo-calyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 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
  JEPS87613  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek); road to Forbestown Reservoir, near Woodleaf Creek 762 Comment
  UC1609160  Aphanes macrosepala Vernon H. Oswald and Lowell Ahart 1993-3-24 5241 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi N of Pentz Rd. 274 Comment
  UC726468  Apocynum androsaemifolium A. A. Heller 1938-7-20 15276 Butte high ridge between Inskip an Chaparral 1524 Comment
  CHSC55470  Apocynum cannabinum L. P. Janeway 1991-6-8 3997 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. 411 Comment
  SEINET10455429  Apocynum pumilum var. rhomboideum Lowell Ahart 1985-6-17 Ahart 5047 Butte Fields Ridge, about 4 miles south-east of Feather Falls. Comment
  CHSC52189  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 296 Butte Ca. 2.0 mi. E of Brush Creek near Indian Creek. 856 Comment
  CHSC52193  Aquilegia formosa var. truncata Kirsten Tarp 1983-7-22 297 Butte E part of county, near Milsap Bar. 548 Comment
  CHSC52685  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 339 Butte E of Butte Meadows. 1341 Comment
  JEPS119576  Arabidopsis thaliana Lowell Ahart 2012-4-17 17873 Butte About 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  SEINET10454400  Aralia californica Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4214 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC583  Arbutus menziesii V. Keeler 1935-4-28 Butte Magalia. 731 Comment
  SEINET10492815  Arceuthobium abietinum Mary Susan Taylor 1977-8-17 Taylor 1486 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
  CHSC46568  Arceuthobium americanum Vernon H. Oswald 1989-7-4 3839 Butte Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  UCD101990  Arceuthobium campylopodum D. Sanchez-Mata; P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  CAS-BOT-BC409928  Arceuthobium campylopodum V. Oswald; Lowell Ahart 1988-7-29 3633 Butte along the road connecting Humboldt and Humbug Roads at a point 0.9 miles W of Humbud Road, ca. 3 miles E of Jonesville 1804 Comment
  CAS-BOT-BC410081  Arceuthobium occidentale John Thomas Howell 1962-6-15 37436 Butte near Magalia 731 Comment
  NY8240  Arctostaphylos laxiflora A. A. Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Transition Life Zone. Comment
  UCD52250  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51567 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC103165  Arctostaphylos manzanita subsp. manzanita Lowell Ahart 2009-11-19 16564 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 miles west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC48369  Arctostaphylos manzanita subsp. manzanita Vernon H. Oswald 1983-2-2 59 Butte Arroyo Chico. Upper Bidwell Park, Chico, trail along creek between Alligator Hole (Parking area G) and Day Camp (Parking Area H). 91 Comment
  RSA31836  Arctostaphylos mewukka A. A. Heller 1940-2-6 15491 Butte Neal Road, Paradise, at the Game Refuge above Bowle's Manzsion. Comment
  SD60287  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC726641  Arctostaphylos mewukka A. A. Heller 1942-1-29 16355 Butte on State Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  CAS-BOT-BC38526  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51107 Butte Paradise. Castle Drive near Cliff Drive. 609 Comment
  CHSC34805  Arctostaphylos mewukka subsp. truei M. S. Taylor 1981-5-13 3701 Butte Above Foreman Creek, ca. 0.5 mi W of 23N5.5, ca. 1.5 mi S of its jct with Four Trees Rd, ca. 0.5 mi W of Oroville-Quincy Hwy, ca. 2 air mi W of Elks Retreat. 1310 Comment
  CHSC44639  Arctostaphylos mewukka subsp. truei J. D. Jokerst 1984-8-15 2146 Butte First ridgeline east of and paralleling Camp Cr. in the canyon of the North Fork Feather River. Comment
  UC426930  Arctostaphylos nevadensis E. B. Copeland 1930-7-6 437 Butte above Jonesville (on high ridges) 2050 Comment
  CHSC99660  Arctostaphylos patula subsp. patula H. Koeth 2007-5-5 Butte Butte Meadows, Cherry Hill campground. UTM 10 628108E 4440095N. 1326 Comment
  CAS-BOT-BC47379  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51101 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48297  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51084 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  UC177598  Arctostaphylos viscida subsp. viscida H. M. Hall 1914-8-2 9830 Butte foothills near Bidwell Bar (ridge summit near Mt. Ida Ranch); Sierra Nevada Mountains Comment
  UC1562488  Arenaria congesta var. congesta Vernon Oswald and Lowell Ahart 1990-6-20 4300 Butte High Lakes Rd, 0.2 mi n of its junction Philbrook Rd. (w of Philbrook Reservoir); Red Fir Forest 1706 Comment
  CDA31421  Aristida dichotoma L. Ahart, Vernon Oswald 2000-8-5 8623 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 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
  CHSC38786  Aristida oligantha Vernon Oswald 1983-7-28 934 Butte Upper Bidwell Park, Chico, near parking Area A on Upper Park Rd. 83 Comment
  SEINET8521973  Aristida oligantha Kelly W. Allred 1991-1 5477 Butte along hwy 99, about 10 miles east of Chico, pine-oak woodland with annual grasses 427 Comment
  SEINET8521980  Aristida oligantha Kelly W. Allred 1991-1 5480 Butte along Honcut Road, 2 miles north of junction with Palermo Road, in annual valley grassland 91 Comment
  CAS-BOT-BC146313  Aristida ternipes var. gentilis J. D. Jokerst 1985-11-6 2590 Butte South of the unnamed creek (first canyon south of Big Chico Creek, future site of Canyon Oaks development), due east of city of Chico. 121 Comment
  CAS-BOT-BC400431  Aristolochia californica John Thomas Howell 1959-9-20 34616 Butte Flats along Feather River about 1 mile west of Oroville 45 Comment
  CHSC3545  Aristolochia californica Gary Dutton 1966-2-28 94 Butte Cliff area in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. Chico State College. Comment
  UC650550  Aristolochia californica Mrs. C. C. Bruce March 1897 1794 Butte Little Chico Comment
  UC573399  Arnica dealbata P. L. Johannsen 1936-7-16 928 Butte Bolt Creek Lassen National Forest, Paynes Creek Quad. 1432 Comment
  UC600519  Arnica dealbata H. F. Copeland 1931-6-10 Butte between Willow and Colby Creek; Jonesville Comment
  SEINET10872090  Artemisia douglasiana Mary Susan Taylor 1977-10-10 Taylor 1522 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  SEINET10839049  Asarum lemmonii Mary Susan Taylor 1981-5-7 Taylor 3648 Butte 3600 ft. T20N R7E sw sec 11, Clipper Mills quad. In shade of shrub, in creek crossing Lumpkin Ridge Rd(20N15), 1.9 mi W of Golden Trout Crossing on South Fork Feather River, ca. 5 air mi e of Feather Falls. Yellow Pine Forest; 1097 Comment
  CHSC44082  Asclepias cordifolia L. P. Janeway 1987-6-27 2335 Butte Ridge overlooking Little Kimshew Cr to the east; 0.6 mi N of Ramsey Bar along Concow Rd. 1432 Comment
  JEPS115624  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 271 Comment
  SEINET10870123  Asclepias cordifolia Mary Susan Taylor 1980-5-31 Taylor 2775 Butte T23N R4E sw sec 30. Magalia serpentine area, just E of Coutelenc Rd at its jct with the Skyway, Magalia; Yellow Pine Forest. With R.A. Schlising and L. Ahart. 610 Comment
  CHSC102716  Asclepias fascicularis Lowell Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  SEINET10923199  Asclepias fascicularis R. Carter 1966-7-6 Carter 464 Butte 7 mi E of Oroville on NE corner of intersection of Miners Ranch Road and Mr. Ida Road 244 Comment
  SBBG128803  Asclepias speciosa L. Ahart 2013-6-11 18799 Butte wet meadow ca. 10 yards N of Forbestown Rd, ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi (air) SW of Forbestown 737 Comment
  CHSC4050  Aspidotis californica J. W. Cherry 1967-3-23 Butte Along Big Chico Creek, directly south of Bidwell Park road, 0.3 mi e of Salmon Hole. 167 Comment
  CAS-BOT-BC68880  Aspidotis californica M. S. Taylor; T. Devine; M. Merryman 1981-2-11 3381 Butte Big Bend Mt. Quad. ca. 100 ft. E of Lumpin Rd. on N slope above Macabes Creek, ca. 2 mi. N of jct Lumpkin Rd. 457 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
  JEPS107277  Astragalus gambelianus Lowell Ahart 2005-4-18 11732 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
  UC176262  Astragalus gambelianus A. A. Heller 1913-4-7 10728 Butte hills six mi n Oroville; n of Oroville Comment
  UC204731  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 mi from Chico; 11 mi from Chico Comment
  POM45819  Astragalus tener var. ferrisiae C. C. Bruce 1898-05 2432 Butte Sacramento River. Comment
  CHSC41769  Asyneuma prenanthoides Lowell Ahart 1974-10-22 669 Butte Along the road that crosses the South Fork of the Feather River, about 3/4 mile north of Golden Trout Crossing, west of the Sly Creek Dam. 762 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
  CHSC42387  Athyrium filix-femina var. cyclosorum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC4115  Athysanus pusillus R. Carter 1966-3-13 297 Butte Found ca. 6 mi. E of Chico at intersection of Honey Run Rd. and Humbug Rd. in Butte Cr. Canyon; 50 yds. up slope on S side of canyon. Comment
  JEPS107360  Athysanus pusillus Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11667 Butte Big Chico Creek Ecological Reserve. Burned area, ca. 50 yd S of fence, on the E side of the poor dirt road, ca. 1/8 mi NW of the Indian Cave, ca. 3/4 mi W of Big Chico Creek, ca. 4 1/2 mi (air) NE of Chico 481 Comment
  CHSC55210  Atriplex argentea var. mohavensis Lowell Ahart 1991-9-6 6712 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, west of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  SEINET10479106  Atriplex heterosperma Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5152 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  SEINET10479064  Atriplex rosea Mary Susan Taylor 1977-10-10 Taylor 1524 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CHSC8167  Avena sativa M. Banning 1969-3-22 19 Butte South edge of Chico Golf Course, Bidwell Park. 73 Comment
  CHSC40397  Azolla filiculoides Lowell Ahart 1985-3-24 4850 Butte South of Highway 70, at the intersection of Highway 70 and 191. 100 Comment
  JEPS122266  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte West end of Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS113220  Azolla microphylla Lowell Ahart 2007-2-14 13562 Butte Dredge ponds along the east side of Wilson Creek, about 1/2 mile north of the Honcut Cemetary, about 3 3/4 miles (air) northeast of Honcut 49 Comment
  UC1101613  Azolla microphylla Herbert L. Mason and Verne Grant 1946-8-14 13018 Butte canal near big pond on Sacramento Outing Club Butte Sink Comment
  SEINET10474447  Baccharis glutinosa Lowell Ahart 1984-10-14 Ahart 4814 Butte On dry gravel and sand bars along North Honcut Creek, ca. 3/4 mi N and 2 mi E of Honcut, on Joie Osgood property, ca. 12 mi S of Oroville. Foothill Woodland; 40 m elev. 40 Comment
  RSA769024  Baccharis pilularis L. Ahart 2009-11-19 16544 Butte About 30 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. 210 Comment
  CHSC51719  Baccharis pilularis subsp. consanguinea M. Bailey 1990-10-30 479 Butte Growing along south side Middle Branch Clear Creek, at a point halfway between Butte Campus Drive and service road. Butte College Campus. Comment
  CAS-BOT-BC98186  Baccharis salicifolia Junea Kelley 1920-4-24 s.n. Butte Los Verjils Comment
  RSA758832  Bacopa eisenii Peter Fritsch, Boni Cruz 2005-8-9 1789 Butte Biggs Rice Experiment Station, about 3.5 miles northwest of Biggs. Weed experiment plot at the corner of Riceton Road and Hamilton Road. 41 Comment
  CHSC48971  Bacopa rotundifolia Vernon Oswald 1988-8-8 3683 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  CHSC32754  Balsamorhiza deltoidea J. D. Jokerst; R. A. Schlising 1981-4-16 1299 Butte SW of Sweedes Flat Rd, 0.9 mi E of it's junction with Bangor Rd (6 mi E of Oroville). Comment
  CHSC46870  Bassia hyssopifolia Vernon Oswald 1989-9-6 3979 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Soil piled in a waste area along the main north-south ranch road ca. 0.5 mi n of Gridley-Colusa Hwy. 18 Comment
  CAS-BOT-BC75547  Berberis dictyota A. A. Heller 1917-3-18 12669 Butte Chico creek lower end of Iron Canon [Canyon]. Comment
  CAS-BOT-BC75953  Berberis pumila A. A. Heller 1962-6-15 37515 Butte Sierra Nevada. Magalia. 731 Comment
  CAS-BOT-BC102105  Bidens cernua John Thomas Howell 1961-9-22 36725 Butte Bank of Feather River, Oroville 53 Comment
  CAS-BOT-BC102068  Bidens frondosa Lowell Ahart 1981-9-15 3167 Butte Along French Creek 1300 Comment
  CHSC43272  Bidens frondosa Lowell Ahart 1987-8-30 5863 Butte On sand and gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA0037017  Bidens frondosa Lowell A. Ahart 2013-11-17 19259 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  JEPS120856  Bidens tripartita Lowell Ahart 2013-6-18 18802 Butte About 20 yards E of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 air miles SW of Gridley. Comment
  CHSC93964  Bistorta bistortoides R. D. Fischer 2004-6-20 759 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected from wet portion of Chico Meadows north of pond. 1371 Comment
  HSC68163  Blennosperma nanum var. nanum J. P. Smith, J. O. Sawyer 1973-4-14 6051 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC33633  Boechera platysperma R. E. Preston; R. A. Schlising, R. Banchero, D. Burk 1981-7-21 112 Butte N ridge of Snow Mtn, ca. 7.2 km se of Jonesville. 2050 Comment
  SEINET3149564  Boisduvalia densiflora L. S. Rose 1939-6-11 39276 Butte 6 mi. E of Honcut 137 Comment
  SEINET10823515  Bolboschoenus glaucus Lowell Ahart 1982-7-10 Ahart 3675 Butte On dry bare soil on bottom of dry duck pond, 1/4 mi SE of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UC1751233  Botrychium montanum Timothy B. Devine 1985-7-14 847 c Butte 1/2 mi NW of Jonesville (beside Willow Creek about 50 ft S of jct with road to Colby Mt. Lookout) 1511 Comment
  CDA13271  Boykinia major G. F. Hrusa, T. D. Wilfred 1996-7-9 13119 Butte Plumas National Forest; Jordan Creek, above falls before confluence with Marble Creek. Comment
  CHSC38790  Brachypodium distachyon Vernon Oswald 1983-5-4 426 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  CHSC42850  Brachypodium distachyon Lowell Ahart 1987-5-9 5604 Butte Along the road near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 304 Comment
  JEPS120578  Brachypodium distachyon L. P. Janeway 2012-6-2 10840 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  CAS-BOT-BC145534  Briza minor A. A. Heller 1914-4-14 11289 Butte 8 miles north of Oroville. Comment
  SEINET10896168  Brodiaea Carl B. Wolf 1937-6-12 Wolfe 2849 Butte Sierra Nevada Foothills, 2 1/2 miles SE of Oroville on road to Wyandotte. 300 feet. Upper Sonoran:-Quercus douglas & P. sabiniana. Red clay, dry open slopes, sun. Comment
  SEINET12048535  Brodiaea californica Unknown 1984-1 13 Butte ca 9 m NE Chico & 100 yds in Big Chico Creek 183 Comment
  CAS-BOT-BC482209  Brodiaea californica subsp. californica Lewis S. Rose 1945-5-12 45013 Butte Richardson Springs 304 Comment
  UC768722  Brodiaea californica var. californica R. F. Hoover 1936-5-21 1172 Butte 3 mi n Cana Comment
  POM253053  Brodiaea californica var. californica A. A. Heller 1938-5-22 15106 Butte In fields near Chico Airport. Comment
  UC1080382  Brodiaea californica var. californica E. K. Balls 1957-5-23 22531 Butte 1.7 mi nw U. S. Hwy. 99 E. jct. with road from Penta 91 Comment
  UC768718  Brodiaea coronaria subsp. coronaria R. F. Hoover 1936-5-20 1154 Butte 10 mi sw Oroville Comment
  CHSC101823  Brodiaea elegans subsp. elegans Lowell Ahart 2009-5-23 15767 Butte Along the rim, north of a small drainage, on the west side of Guardians Trail, just northwest of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CAS-BOT-BC482197  Brodiaea elegans subsp. elegans Lowell Ahart 1983-6-26 4146 Butte Along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville 550 Comment
  CAS-BOT-BC482930  Brodiaea elegans subsp. elegans A. A. Heller; H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  CHSC103701  Brodiaea minor Lowell Ahart 2010-5-14 16664 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 350 Comment
  CHSC42231  Brodiaea minor David B. Andreas 1986-4-20 18 Butte Ca. 5 m from roadside junction Hwy 99 and Broyles Rd. 18 km nw of Chico. 61 Comment
  CHSC75413  Brodiaea minor Jennifer Slater 1997-4-20 27 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC484375  Brodiaea minor Lincoln Constance 1941-5-28 2825 Butte Three miles southwest of Paradise, Sierra Nevada foothills 304 Comment
  SEINET10472618  Brodiaea minor Mary Susan Taylor 1975-2-16 Taylor 376 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  UCD77195  Brodiaea nana Robert E. Preston 2004-4-21 2217 Butte Ca. 4.3 mi NW of Oroville. 56 Comment
  CHSC71463  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte On the southeast side of the dirt road to the Forbestown Reservoir, about 1 mile northeast of Forbestown Road, about 2 1/2 miles (air) northeast of Forbestown. 883 Comment
  CHSC92885  Brodiaea sierrae L. P. Janeway 2005-6-26 8428 Butte Northern High Sierra Nevada. South-facing slope 0.4 km south of top of Batchelor Point, 0.6 km east of top of Rocky Ridge and Rim Road (Ponderosa Way). 945 Comment
  UCD78199  Brodiaea sierrae R. E. Preston 2002-6-7 1811 Butte Magalia, along The Skyway, 0.1 mi n of jct with Coutelenc Rd 704 Comment
  UCD59169  Bromus carinatus var. marginatus A. A. Heller 1917-7-26 12832 Butte Butte Meadows. 1280 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
  CHSC56625  Bromus diandrus J. M. Lund 1980-2-24 Butte Chico; 0.5 mi north of East Avenue on the west edge of Hwy 99. 76 Comment
  RSA715574  Bromus diandrus L. Ahart 2005-4-14 11707 Butte Gridley. At the base of the railroad, east side of the railroad tracks, south of the railroad bridge, north of Spruce street. 28 Comment
  RSA754797  Bromus diandrus L. Ahart 2009-5-8 15667 Butte S side of gravel road, about 10 yards E of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC155461  Bromus hordeaceus Lowell Ahart 1982-6-4 3549 Butte Sierra Nevada. On a lava cap, ca. 1.5 mile east of Camp 18, ca. 8 miles east of Feather Falls. 1000 Comment
  CHSC31946  Bromus hordeaceus J. D. Jokerst 1979-4-20 1211 Butte Top of North Table Mt., ca. .75 mi N of Cherokee Rd. 396 Comment
  CHSC96549  Bromus hordeaceus L. P. Janeway 2006-4-30 8567 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  JEPS119865  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10514564  Bromus hordeaceus Marilyn Lee 1968-5-3 Lee 158 Butte South side of Skyway, 6 miles E. of Chico. Comment
  CHSC88196  Bromus inermis subsp. inermis Lowell Ahart 2004-7-23 11307 Butte On the west side of Philbrook Reservoir Road, about 20 yards south of the bridge across the West Branch of the Feather River, about 1 1/2 miles (air) northwest of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1507 Comment
  JEPS113901  Bromus inermis subsp. inermis L. P. Janeway 2007-7-23 9121 Butte Northern High Sierra Nevada; Plumas National Forest; just above a logging spur road just above Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km N-NE of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CDA1830  Bromus japonicus L. Ahart 1998-6-3 8015 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  CHSC87913  Bromus laevipes Lowell Ahart 2004-5-27 10958 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  JEPS120988  Bromus laevipes Lowell Ahart 2013-5-27 18716 Butte On E side of Black Bart Road, about 0.75 road miles SW of intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  RSA718306  Bromus laevipes L. P. Janeway 2006-6-8 8829 Butte Northern High Sierra Nevada. Near road long west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. 1021 Comment
  SEINET10507836  Bromus laevipes Lowell Ahart 1985-5-15 Ahart 4987 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  CHSC35671  Bromus madritensis subsp. madritensis R. E. Preston 1982-4-25 264 Butte Slope at lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 280 Comment
  UC1609515  Bromus orcuttianus Lowell Ahart 1993-6-26 7020 Butte about 1 mi w of Lost Creek Reservoir 1188 Comment
  CAS-BOT-BC161959  Bromus rubens Peter H. Raven 1953-5-9 5436 Butte 7.2 miles from Bangor on Oroville Road. Comment
  SEINET10507344  Bromus sterilis Lowell Ahart 1985-5-10 Ahart 4956 Butte 10 meters north of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  CHSC27567  Bromus tectorum Robert Schlising 1978-5-17 3259 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  CHSC43260  Calamagrostis canadensis Lowell Ahart; Tim Devine, Vern Oswald 1987-10-17 5917 Butte Along the East Fork of Last Chance Creek, about 1/2 mile north-west of Jones Meadow. 1676 Comment
  CHSC61367  Calamagrostis canadensis Lowell Ahart 1993-7-31 7138 Butte On the edge of a bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles south-east of Bald Mountain, north-east of Stirling City. 1493 Comment
  CHSC31554  Callitriche heterophylla var. bolanderi L. Ahart 1973-5-24 228 Butte In a small wash. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38281  Callitriche heterophylla var. bolanderi Vernon Oswald 1983-3-9 146 Butte Upper Bidwell Park, Chico, 400 ft w of Day Camp. In an oxbow near Chico Creek. 91 Comment
  CHSC103743  Callitriche marginata Lowell Ahart 2010-5-22 16711 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC78134  Callitriche trochlearis Lowell Ahart 2000-5-21 8380 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  CHSC76965  Calochortus albus Margie Collins 1894-4-1 Butte Forbestown. Comment
  CAS-BOT-BC487516  Calochortus albus Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  HSC38065  Calochortus albus Thomas W. Nelson, Jane P. Nelson 1976-5-10 2473 Butte Beside SR 191 about 4 mi. W of Paradise Comment
  HSC66270  Calochortus albus M. S. Taylor, Jim Jokerst 1980-4-27 2567 Butte S side of Humbug Rd., 0.5 mi. upstream from Honey Run Covered Bridge, 7 mi. E of Chico 137 Comment
  POM225869  Calochortus albus J. H. Morrison 1932-5-30 SN Butte Durham. Comment
  SEINET10872528  Calochortus albus Mary Susan Taylor 1980-4-27 Taylor 2567 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  SEINET3884902  Calochortus albus Johann D. Watjen 1969-5-4 32 Butte Table Mountain, 0.4 mile off of Highway 70, 2 miles southwest of West Fork Feather River.; 0 98 Comment
  CHSC115291  Calochortus albus var. albus Lowell Ahart 2015-4-27 20086 Butte On both sides 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
  SEINET10469592  Calochortus leichtlinii Mary Susan Taylor 1980-8-2 Taylor 3208 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC24840  Calochortus luteus J. T. Moore 1976-4-28 18 Butte 5 m n of Skyway road to Paradise, 8 km e of Hwy 99. 210 Comment
  CAS-BOT-BC491849  Calochortus luteus David D. Keck 1933-5-31 2416 Butte 5 miles east of Oroville on road to Bangor Comment
  CAS-BOT-BC491852  Calochortus luteus A. A. Heller 1913-5-25 10760 Butte Near Pents 152 Comment
  CHSC81581  Calochortus monophyllus Petra M. Lee 2000-4-19 Butte Chico. Upper Bidwell Park at Green Gate, 6.8 mi past Bruce Rd on Hwy 32. 243 Comment
  CAS-BOT-BC492595  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 s.n. Butte Near Paradise in the lower Sierra Nevada, in the Lower Transition Zone 600 Comment
  HSC23374  Calochortus monophyllus J. V. Serrao II 1971-4-24 134 Butte Banks of Honey Run Rd., ~ 3 mi. W of Covered Bridge, Paradise Comment
  CHSC44657  Calochortus nudus L. P. Janeway 1988-7-1 2927 Butte Along mdwy cr draining lake of the SE-most head-waters of Butte Cr. 1935 Comment
  POM109552  Calochortus nudus C. C. Bruce 1898-05 2405 Butte Dye place Comment
  POM219307  Calochortus nudus H. F. Copeland 1931-6-9 1513 Butte Jonesville. 1524 Comment
  CHSC38876  Calochortus superbus Vernon Oswald 1983-5-18 505 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power line. 243 Comment
  CHSC40083  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Summit between the West Branch and North Fork of the Feather River on Highway 324, in the Arid Transition Life Zone. 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
  CAS-BOT-BC175754  Caltha leptosepala Alice Eastwood 1912-8-22 1841 Butte Meadows, Lassen Butte 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-BC273290  Calycadenia fremontii G. D. Carr 1978-7-7 792 (1978) Butte NE of Chico, Upper Bidwell Park (Devils Kitchen), 4.6 mi NE of Manzanita Ave on Upper Bidwell Canyon Rd via Wildwood Ave 232 Comment
  CHSC46630  Calycadenia multiglandulosa Lowell Ahart 1989-7-4 6363 Butte Near a mined over area south of Oregon Gulch Road, about 1/4 mile northwest of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SBBG128716  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte ca. 150 yards E of the intersection of Forbestown Rd and Black Bart Rd, ca. 3.25 mi SW of Forbestown 737 Comment
  CAS-BOT-BC106095  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte Near the Chico airport Comment
  JEPS98426  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 Butte 3 mi SE of Paradise (serpentine ridge, 200 yds E of where Kunkle Creek enters Lake Oroville, E of the Kunkle Power House) 335 Comment
  UC1876184  Calycadenia oppositifolia Gerald D. Carr 1971-6-15 564 Butte 0.7 mi W of Paradise, S side of Chico-Paradise Hwy. Comment
  CAS-BOT-BC270886  Calycadenia spicata Lowell Ahart 1981-8-31 3052 Butte W of Forbestown 750 Comment
  CHSC25457  Calycadenia truncata Marc Hayes; Warner 1977-9-12 99 Butte On Butte College Campus, at intersection of Pentz and Clark Rds., ca. 15 SE of Chico. 82 Comment
  CHSC28385  Calycadenia truncata J. D. Jokerst; M. S. Taylor 1979-10-13 398 Butte Jordan Hill Rd. (Ponderosa Way) 2.55 mi E of junction with the N fork Feather River. 853 Comment
  CHSC34793  Calycadenia truncata M. S. Taylor 1981-6-19 3960 Butte North side of Hwy 70 at NW end of Pulga bridge. Ca. 20 mi NE of Oroville. 487 Comment
  UCD68064  Calycanthus occidentalis Paul Quiggle 1976-5-24 9 Butte Lassen National Forest, approximately 35 miles East of Chico, California, on the East bank of Deer Creek. Plant found in mid-day sunlight. Comment
  CHSC35975  Calyptridium monospermum M. S. Taylor 1982-6-24 4743 Butte Disturbed soils in meadow at Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  HSC103795  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km. N of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. 847 Comment
  UC600770  Calystegia malacophylla subsp. malacophylla E. B. Copeland July, 1930 Butte Jonesville 1550 Comment
  SEINET10496586  Calystegia occidentalis Mary Susan Taylor 1982-6-24 Taylor 4735 Butte T23N R5E sw/sw sec 29. Pulga SW quad. At end of spur rd along Flea Valley Ridge, ca. 1.5 mi se of Flea Mt, ca. 9 mi ne of Jarbo Gap on Hwy 70; n of Pulga. Mixed Evergreen Forest; 3500 ft. 1069 Comment
  UC1601755  Calystegia occidentalis var. tomentella E. B. Copeland July, 1930 Butte Jonesville Comment
  CHSC6019  Camellia japonica M. MacArthur 1968-6-19 266 Butte Se side of Auditorium bld., Chico State College. 60 Comment
  SD5018  Campanula prenanthoides E. B. Copeland 1930-8-4 Butte Jonesville 1500 Comment
  CHSC38039  Capsella bursa-pastoris R. E. Preston 1982-12-4 369 Butte In a field; n side of River Rd at bend at Bremner Ranch, ca. 7 mi sw of Chico. 33 Comment
  HSC96910  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 Butte E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 air mi. SW of Chico 26 Comment
  JEPS103602  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  RSA715889  Capsella bursa-pastoris L. Ahart 2005-4-2 11683 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
  CAS-BOT-BC37062  Capsella bursa-pastoris Lowell Ahart 1973-2-21 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut. 150 Comment
  UCD114501  Cardamine californica R. E. Preston 1982-3-20 188 Butte at sides of Highway 70, 1.4 miles NE of Jarbo Gap, 17 miles NNE of Oroville. 670 Comment
  JEPS122189  Cardamine oligosperma Lowell Ahart 2014-4-16 19361 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  SEINET11983098  Cardamine oligosperma Unknown 1978-1 4 Butte ca 125 ft S of Rock Creek 213 Comment
  CHSC43873  Carex amplifolia L. P. Janeway 1987-6-8 2173 Butte Jack Cr on upper side of dirt road 8.6 mi S of Big Bar Mtn. 746 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
  CHSC106511  Carex angustata Peter F. Zika 2009-6-17 24517 Butte Cascade Range Highlands (CaRH). Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  UCD140091  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville. 1500 Comment
  SEINET7550019 Image available Carex aquatilis L. P. Janeway, Gavin Blosser, Paul Kirk 2003-3-27 7748 Butte Northern Sierra Nevada Foothills. At high water line of Middle Fork Feather River arm of Lake Oroville, at the mouth of Sycamore Creek; 3.1 km north-northeast of the Bidwell Bar Bridge. Oroville Dam quad 7.5' quad. 274 Comment
  RSA4412  Carex athrostachya E. B. Copeland 1929-7-28 607 Butte Jonesville. 1500 Comment
  RSA364594  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. 1524 Comment
  SEINET10856119  Carex athrostachya Edwin B. Copel 1928-7-28 Copeland 607 Butte Jonesville. About the edges of the ''Lily Pond'', a permanent pool, warm in summer. 1770 Comment
  CHSC45242  Carex aurea S. C. Morey 1983-7-24 625 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC52271  Carex bolanderi L. P. Janeway 1988-5-29 2676 Butte Canyon of Big Chico Creek; seep along Ponderosa Way 1.2 mi NW of the creek crossing. 426 Comment
  SEINET3143631  Carex bolanderi L. S. Rose 1939-6-7 39253 Butte 3 mi N of Pulga, Feather River Canyon 518 Comment
  UCD140161  Carex bolanderi L. P. Janeway 1987-6-13 2206 Butte Dogwood Creek along the road to Mayaro 2.4 miles east of the Concow Road. 990 Comment
  CHSC115742  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Northern Sierra Nevada Highlands. Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir. 1040 Comment
  JEPS105631  Carex densa L. P. Janeway 2003-6-8 7820 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1100 Comment
  SEINET7708167 Image available Carex echinata subsp. echinata H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville; Lassen National Forest Comment
  CHSC102592  Carex feta L. P. Janeway; B. Castro 2009-7-4 9837 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  SEINET7558592 Image available Carex feta Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11405 Butte Ca 4 mi NE of community of Butte Meadows, ca 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek, W side of paved road. 1448 Comment
  CHSC94295  Carex fracta Lowell Ahart 2006-7-25 13068 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET11310005 Image available Carex fracta Unknown 2009-1 24616 Butte Above Humboldt Road, c. 2 air km S of Humboldt Summit, Cascade Range Highlands (CaRH). Comment
  CAS-BOT-BC7777  Carex laeviculmis Lowell Ahart 1984-7-19 4746 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, CA 1500 Comment
  CHSC42690  Carex laeviculmis L. P. Janeway 1987-6-27 2342 Butte Along Little Kimshew Cr 0.7 mi north of the Concow Rd. 1508 Comment
  CHSC42842  Carex laeviculmis Lowell Ahart 1981-8-15 3048 Butte Seep like area on the south side of the dirt road, about 1 mile east of Coon Hollow Road, south-east of Snag Lake, about 10 miles north of Inskip. 1737 Comment
  SEINET4286003 Image available Carex laeviculmis L. Janeway, Gog, L 2008-1 3189 C Butte Near Cornelia Lott Sank Memorial Spring Comment
  RSA700243  Carex lemmonii L. Ahart 2004-7-23 11296 Butte About 20 yards northwest of the dirt road to the West Branch Campground, about 50 yards southeast of the intersection of Humbug Road and Philbrook Reservoir Road., About 1 3/4 miles (air) west of Philbrook Reservoir Dam, about 3 miles (air) southeast of Butte Meadows. 1587 Comment
  UCR66603  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 457 Comment
  SEINET7485364 Image available Carex lemmonii L. P. Janeway 13/VII/2003 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. Comment
  CHSC113433  Carex limosa Lowell Ahart 2014-7-7 19583 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC83288  Carex microptera L. P. Janeway; B. Castro 2002-7-7 7617 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow. 1829 Comment
  CHSC103223  Carex multicaulis L. P. Janeway; Matt Simenc, Sarah Starkey, Nicole Habecker 2010-5-25 9979 Butte Northern High Sierra Nevada. Plumas National Forest; near Bean Creek Road near the Dome Trail Trailhead, 1.4 km south of Bald Rock Dome; near top of ridge between Bean Creek and Middle Fork Feather River. 853 Comment
  CHSC43920  Carex multicaulis L. P. Janeway 1987-7-4 2431 Butte Near a seepy area along rd to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  CAS-BOT-BC32162  Carex multicaulis Lloyd W. Swift 1934-5-8 106 Butte S Challenge 914 Comment
  CHSC52233  Carex pachystachya L. P. Janeway 1987-6-19 2238 Butte Along Sly Creek at crossing of dirt road to the SE side of Sly Cr Reservoir, 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  CHSC52241  Carex pendula L. P. Janeway 1989-11-23 3652 Butte South side of city of Chico; along Comanche Creek (Edgar Slough) just SW of Meyers Ave. 59 Comment
  CHSC44992  Carex praegracilis S. C. Morey 1983-7-24 624 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC89738  Carex specifica L. P. Janeway; Robert F. C. Naczi 2004-7-24 8183 Butte High Cascade Range. Near Scotts John Creek at crossing of the road connecting upper Humboldt Summit Road and Humbug Summit Road. 1737 Comment
  CHSC76325  Carex stipata var. stipata G. F. Hrusa; T. D. Wilfred 1996-7-9 13143 Butte Northern California; Plumas National Forest. On shaded wet bank of Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. [Original Lat./Long. on label is '39 51 N; 121 34 W']. 1175 Comment
  UC1108037  Carex subfusca H. F. Copeland 1932-8-14 Butte Jonesville, woods below cabin Jonesville Comment
  SEINET10467124  Carex subfusca Mary Susan Taylor 1978-7-21 Taylor 1812 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  SEINET10751194  Carex teneriformis Edwin B. Copel 1929-7-20 Copeland 611 Butte Jonesville. By Jones Creek. Comment
  CDA13262  Carex xerophila G. F. Hrusa, T. D. Wilfred 1996-7-8 13106 Butte Sierra Nevada; Corner of Skyway Rd. and Rd. to Paradise Lake [Cuotolenc Rd.], at N boundary of Magalia. 709 Comment
  CHSC47014  Carex xerophila Gail Kuenster 1989-6-4 Butte On top of serpentine ridge NW of and above the upper end of Magalia Reservoir. 762 Comment
  UCD140189  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-7 13726 Butte Sierra Nevada. Near summit of SSE slope above Little Butte Creek, N of Magalia. Immediately east of Holmwood Drive. 750 Comment
  UCR261236  Carex xerophila Peter F. Zika, L. P. Janeway 2012-5-16 25868 Butte Northern Sierra Nevada Range, northern highlands, Coutolenc Road 0.1 mi north of Skyway Road 720 Comment
  CAS-BOT-BC249593  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte Canyon of the north fork of the Feather River along highway US, at Pulga Bridge, west side of river Comment
  CHSC109609  Castilleja applegatei subsp. pinetorum Lowell Ahart 2012-5-20 18098 Butte On the north side of the Humboldt Trail, about 50 yards northwest of the poor dirt road south of Highway 32, southeast part of Upper Bidwell Park, northeast of Chico. 428 Comment
  CHSC34082  Castilleja applegatei subsp. pinetorum M. S. Taylor 1981-7-19 3957 Butte N side of Feather River Hwy 70m at nw end of Pulga bridge and along Pulga rd ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  CHSC44356  Castilleja applegatei subsp. pinetorum Lowell Ahart 1988-5-1 5978 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. 280 Comment
  JEPS3294  Castilleja applegatei subsp. pinetorum L. Heckard and J. R. Sweeney 1953-4-27 345 a Butte 23 mi ne Oroville (Feather River canyon highway) 548 Comment
  SBBG28928  Castilleja arachnoidea E. B. Copeland 1930-7-12 Butte above Jonesville, under N brow of ridge 2100 Comment
  CHSC38710  Castilleja attenuata Vernon Oswald 1983-3-9 144 Butte Upper Bidwell Park, Chico, on the north slope near the head of the intermittent stream which crosses Upper Pard Rd. 0.5 mi e of the power lines. 213 Comment
  CHSC62584  Castilleja attenuata L. P. Janeway 1993-5-2 4339 Butte Adjacent to serpentine rocky outcrop narrow ridge, south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC90169  Castilleja attenuata Jose Romero 1983-4-20 8 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  UC138957  Castilleja attenuata E. B. Copeland 1903-4-10 3040 Butte Chico Comment
  UCR237299  Castilleja attenuata George K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 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
  JEPS103430  Castilleja campestris subsp. campestris Lowell Ahart 2002-4-24 9531 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  CHSC26789  Castilleja lacera M. S. Taylor 1978-5-6 1620 Butte Ca. 8 mi ne of Chico, ca. 1/2 mi e of Cohasset Rd. 137 Comment
  CAS-BOT-BC241125  Castilleja miniata A. A. Heller 1914-7-23 11612 Butte Sierra Nevada at Chico Meadows 1280 Comment
  UC454128  Castilleja miniata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM193338  Castilleja payneae E. B. Copeland 1930-7-12 468 Butte Above Jonesville. 2100 Comment
  SEINET10549443  Castilleja pruinosa Lowell Ahart 1985-5-15 Ahart 5002 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  CHSC43514  Castilleja subinclusa Lowell Ahart 1976-4-15 1077 Butte Along the edge of Swedes Flat Road, near the bridge across Rocky Honcut Creek, north-east of Bangor. 457 Comment
  UC1594630  Castilleja tenuis Lowell Ahart 1992-7-29 6883 Butte about 0.75 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  UC886575  Castilleja tenuis A. A. Heller 1938-7-20 15287 Butte 7 mi e Chaparral (meadow upper end of Snag Lake); Snag Lake 1524 Comment
  UC886576  Castilleja tenuis A. A. Heller 1914-6-22 11509 Butte Chico meadows; Chico 1219 Comment
  CHSC38636  Ceanothus cuneatus var. cuneatus Vernon Oswald 1983-2-26 102 Butte Upper Bidwell Park, Chico, on the north slope at the level of the e end of Horseshoe Lake. 137 Comment
  CHSC36071  Ceanothus diversifolius R. A. Schlising; J. D. Jokerst 1982-6-6 4288 Butte Along Concow Road, n of Concow Reservoir, near Flea Mt. 1097 Comment
  CAS-BOT-BC50782  Ceanothus integerrimus Ira L. Wiggins 1925-3-25 1451 Butte Two and one half miles above Pence on Pence-Magalia Road 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
  LA43611  Ceanothus integerrimus Carl B. Wolf; 1937-5-18 8726 Butte Northern Sierra Nevada; 5 mi. below Magalia on Oroville Rd 609 Comment
  SEINET12211315  Ceanothus integerrimus S. A. Carter 1988-1 s.n. Butte S. side of Little Butte Creek, ca 8.8 mi ese of Chico, ca 75 ft W of Honey Run Road 160 Comment
  CHSC1508  Ceanothus integerrimus var. macrothyrsus M. Roberson 1956-5-2 Butte SW of Paradise, along Skyway. 426 Comment
  POM85959  Ceanothus integerrimus var. macrothyrsus C. C. Bruce 1897-05 1814 Butte Iron Canyon Comment
  SEINET10493641  Ceanothus integerrimus var. macrothyrsus Lowell Ahart 1985-3-4 Ahart 4844 Butte On red rocky soil near Kunkle Res., about 2 miles south of Paradise. Comment
  RSA107427  Ceanothus integerrimus var. puberulus L. S. Rose 1955-6-15 55099 Butte Paradise 518 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
  UC1070788  Ceanothus lemmonii C. G. Albertus 1933-5-26 3 Butte 2 miles E of Paradise Chico Quad. 152 Comment
  CHSC11992  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville. 1600 Comment
  SEINET194885  Ceanothus prostratus A. A. Heller 1949-4-10 15371 Butte unspecified Comment
  SBBG17268  Ceanothus prostratus var. prostratus M. Vincent 1962-4-15 177 Butte Skyway, 0.5 mi N of Magalia beside the Magalia reservoir Comment
  CHSC100800  Ceanothus velutinus R. A. Schlising; L. Janeway 1988-7-1 4547 Butte N part of county; end of road above Summit Lake, on Snow Mountain. Comment
  CHSC106238  Celtis sinensis L. P. Janeway; B. Castro 2010-6-4 9991 Butte Sacramento Valley. Lower Bidwell Park, Chico; south side of Big Chico Creek, between South Park Drive and the creek, 400 m south of junction of South Park Drive and Centennial Ave. 78 Comment
  CAS-BOT-BC282003  Centaurea calcitrapa W. Gilbert; R. Dodd 1970-7-22 s.n. Butte Highway 32 to Lake Almanor, NE of Forest Ranch, 19.5 miles NE of Chico Comment
  CDA18839  Centaurea diffusa M. Stewart, Riley, Rick Keck 1997-8-12 PDR 1145796 Butte along N/S Humboldt Rd., 1.2 miles west of USFS CDF fire station, Butte Meadows. 0 Comment
  JEPS87515 Image available Centaurea jacea Lowell Ahart 1993-8-8 7154 Butte w side of La Porte Road about 2 mi sw Clipper Mills 1066 Comment
  CDA35494  Centaurea maculosa Ed Finley 2006-6-26 PDR# 1365082 Butte Paradise; Edgewood Lane. 0 Comment
  CHSC102841  Centaurea melitensis Lowell Ahart 2009-6-30 15966 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 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
  CHSC109623  Centaurea melitensis Lowell Ahart 2012-5-20 18101 Butte On the east side of the Humboldt Trail, southeast part of Upper Bidwell Park, northeast of Chico. 414 Comment
  JEPS98719  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  UCR188716  Centaurea solstitialis George K. Helmkamp, E. A. Helmkamp 2007-10-7 13073 Butte Northern Sacramento Valley, Biggs East Hwy, 1.6 miles east of CA-99 at Biggs 32 Comment
  CHSC108326  Centaurea stoebe subsp. micranthos Lowell Ahart 2011-8-19 17638 Butte On east side of the forest road, about 1/2 mile northwest of the bridge across the South Fork of the Feather River, about 7 miles (air) east-northeast of Feather Falls. 1243 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
  CHSC649  Centaurium tenuiflorum A. Anderson 1963-7-7 Butte Near Golf Course. 76 Comment
  CHSC650  Centaurium tenuiflorum R. M. Staley 1952-7-4 Butte Honey Run. 304 Comment
  CHSC74674  Centaurium tenuiflorum B. Castro 1998-6-13 790 B Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 80 ft N of creek channel, directly under transmission lines. 85 Comment
  CHSC91462  Centaurium tenuiflorum Lowell Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about 5 miles west of Oroville Quincy Highway. 733 Comment
  SFV5834  Centaurium venustum M. L. Vincent 1968-6-5 766 Butte 1 mile south of Cherokee on road to Oroville. Roadside at old Campbell Ranch. 410 Comment
  CHSC70817  Centranthus ruber B. Castro 1995-4-13 559 Butte N edge of town of Oroville, on open, disturbed cobbly flat on the S side of the Feather River, just E of its crossing under Hwy 70. On S side of levee, in vacant lot by residential area. 51 Comment
  UC143598  Cephalanthera austiniae Mrs. R. M. Austin July 1896 7 Butte Butte Creek Comment
  CAS-BOT-BC222892  Cephalanthus occidentalis Lowell Ahart 1973-8-13 s.n. Butte Peter Ahart Ranch, Honcut 150 Comment
  JEPS108776  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC37435  Cerastium glomeratum R. A. Schlising 1982-4-24 4234 a Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  SEINET10537463  Cerastium viscosum Mary Susan Taylor 1975-4-6 Taylor 435 Butte Chico. 52 Comment
  CDA36293  Ceratophyllum demersum Ed Finley? Jul 1987 Butte Sacramento River, Mile 195, east bank. [Near Hamilton City] 0 Comment
  CAS-BOT-BC179512  Cercis occidentalis A. A. Heller 1914-5-18 11406 Butte West slope of Sierra near Forest Ranch. Between Chico and Forest Ranch, 14 mi from Chico. 609 Comment
  CHSC33360  Cercis occidentalis Steve Alvarez 1980-3-24 19 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  SFV1803  Cercis occidentalis M. L. Vincent 1961-3-30 24 Butte Honeyrun Road, 0.5 miles west of Paradise. 610 Comment
  UC136899  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  UCSB16652  Cercis occidentalis Vincent, M. 1961-3-30 Butte Honeyrun Road, one half mile west of Paradise 609 Comment
  SEINET11910531  Cercocarpus betuloides Unknown 1975-1 18 Butte 50 Yd. up dirt road junct. with Cohasset Rd., 7.0 mi NE of Chico Muni Airport 305 Comment
  CAS-BOT-BC136999  Cercocarpus betuloides var. betuloides Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain Comment
  CHSC37621  Cercocarpus betuloides var. betuloides T. B. Devine 1979-7-8 584 Butte Along Hwy 32, ca. 1/2 mi below T. V. cable antenna, ca. 11 mi N of Chico. Comment
  POM66468  Chaenactis glabriuscula var. heterocarpha C. C. Bruce 1897-05 1988 Butte Forest- Ranch. Comment
  CHSC46071  Chaenactis glabriuscula var. megacephala J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1782 Butte Top of Bald Rock Dome. Comment
  CHSC23406  Chamaebatia foliolosa M. S. Taylor 1976-3-6 1010 Butte Above Macabes Creek, ca. 1/4 mi e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC6011  Chamaecyparis lawsoniana M. MacArthur 1968-4-19 253 Butte Front lawn of Administration bld., near First Street, Chico State College. 60 Comment
  CHSC102521  Chamaesyce maculata Lowell Ahart 2009-10-8 16414 Butte South of a large ditch, on the north side of the road, about 20 yards northeast of Parking Lot 12, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  JEPS117556  Chamaesyce maculata Lowell Ahart 2010-6-25 16838 Butte In the planter areas, in the parking area at Bidwell Mansion, Chico 60 Comment
  JEPS120594  Chamaesyce maculata Lowell Ahart 2013-11-18 19276 Butte Below the high-water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC51260  Chamaesyce nutans Lowell Ahart 1990-9-30 6605 Butte On the north side of Canyon Creek, about 1/8 mile north of the Canyon Creek Bridge across Lake Oroville, below the high water line of Lake Oroville. 228 Comment
  CHSC46363  Chamaesyce 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
  SEINET10690232 Image available Chamaesyce ocellata A. Arthur Heller 1913-9-16 Heller 11140 Butte Hills near Big Chico creek, east of Chico. Comment
  CHSC72250  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte About 1/4 mile west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 388 Comment
  CHSC113147  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 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
  UC1586634  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald and Lowell Ahart 1990-10-11 4457 Butte 4 mi S of Jarbo Gap (Lake Oroville, Dark Canyon Arm of) 265 Comment
  CAS-BOT-BC32685  Chamaesyce sulfurea Amos Arthur Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, east of Chico Comment
  JEPS104147  Cheilanthes gracillima Lowell Ahart 2003-4-15 10099 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC83027  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 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
  JEPS103334  Chenopodium berlandieri Lowell Ahart 2002-10-17 9989 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  UCD97854  Chenopodium missouriense G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13065 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  CHSC31545  Chenopodium murale L. Ahart 1977-7-1 1443 Butte Near the old sheep barn. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC1409  Chimaphila menziesii R. Carter 1964-5-16 100 Butte Feather R. Canyon, 1/4 mi. S of Cresta Power House on S side Hwy. 40A. 609 Comment
  POM174392  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte Jonesville. Comment
  SEINET10449192  Chimaphila menziesii Mary Susan Taylor 1980-5-27 Taylor 2658 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  JEPS106015  Chloris virgata Lowell Ahart 2004-6-28 11147 Butte On the east side of Lone Tree Road, about 1/2 mile north of Palermo Road, about 1 1/2 miles (air) northwest of Palermo, about 5 miles (air) south of Oroville 43 Comment
  CHSC46429  Chlorogalum angustifolium Lowell Ahart 1989-5-23 6261 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC88960  Chorizanthe stellulata Christine Hantelman 2000-4-27 84 Butte On western end of vernal pool preserve between Oroville airport runway and Table Mountain golf course. 60 Comment
  CAS-BOT-BC247538  Chorizanthe stellulata David D. Keck 1933-5-31 2413 Butte 4.3 miles north of Chico city limits, on Richardson Springs road Comment
  POM105880  Chorizanthe stellulata R. M. Austin 1879-05 s.n. Butte Dead Man's Grade Comment
  UCD40403  Chrysolepis Rodney Gale Myatt 1971-6-13 728 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  POM308435  Chrysothamnus nauseosus subsp. albicaulis Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3064 Butte Feather River Hwy. Comment
  CHSC37344  Cicendia quadrangularis F. J. Fuller 1982-4-17 18 Butte Ca. 30 ft n of Broyles Rd, 0.4 mi w of Hwy 99. 59 Comment
  JEPS71174  Cinna latifolia A. L. Hormay 1929-7-20 Butte (10 mi se) Butte Meadows; se <of> Butte Meadows Comment
  SEINET5507008 Image available Cirsium andersonii E. B. Copeland 1931-7-27 n.s. Butte Jonesville 1650 Comment
  CHSC46311  Cirsium occidentale var. candidissimum Vernon Oswald 1989-6-8 3803 Butte Camp Creek Rd, 0.5 mi s of Dogwood Creek, n of Pulga. Along road. 585 Comment
  CDA1321  Cirsium occidentale var. candidissimum T. C. Fuller 1958-7-7 1908 -B Butte 1 mi. S of Pulga; roadside 0.1 mi. N of bridge over North Fork Feather River. 0 Comment
  CHSC304  Cirsium occidentale var. venustum B. Richardson 1929-5-14 Butte Cohasset. 609 Comment
  CHSC38337  Cirsium occidentale var. venustum Vernon Oswald 1983-5-30 581 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  SEINET10473708  Cirsium proteanum Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4075 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-BC228750  Cistanthe umbellata A. A. Heller 1913-6-7 10804 Butte Near Stirling 1074 Comment
  CAS-BOT-BC228758  Cistanthe umbellata E. B. Copeland 1930-7-12 413 A Butte Above Jonesville 2000 Comment
  CHSC12119  Clarkia arcuata M. F. Smith 1972-3-1 8 Butte On Cherokee Orille Road. Six (6) miles north of Oroville on Table Mountain. 304 Comment
  CHSC84865  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7809 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  CAS-BOT-BC164522  Clarkia gracilis subsp. albicaulis Frances Brown 1934-1-1 s.n. Butte Mountains above Chico Comment
  CHSC2481  Clarkia gracilis subsp. albicaulis W. Fitzwater 1958-5-10 Butte Humboldt Rd., Chico area. Comment
  JEPS14931  Clarkia gracilis subsp. albicaulis Rimo Bacigalupi with Richard Hauke and Geo. Bacigalupi Jr. 1954-7-15 4726 Butte 3 1/2 mi below and ssw Nimshew (along Humbug Road, on road to Centerville); Butte Creek 518 Comment
  RSA0060028  Clarkia gracilis subsp. albicaulis R. D. Fischer 2004-5-30 185 Butte 4-5 airmiles N. of Paradise, and W. of upper Paradise Pines. Turn W. off Skyway Road on Nimshew Road and take the S. turn on Centerville Road (on older maps Humbug Road), ca 1.4 miles S. of this junction. 620 Comment
  CHSC46131  Clarkia gracilis subsp. gracilis Lowell Ahart 1975-5-12 755 Butte On dredger piles, along North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC86132  Clarkia mildrediae subsp. lutescens John Dittes; Josephine Guardino 2002-6-27 622 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 1.2 air-miles east of Middle Fork Feather River, ca. 1.9 air-mile east of Middle Fork Feather River, ca. 5.0 air-miles north by northwest of town of Feather Falls, ca. 1.6 air-mile north of Feather Overlook. South-facing slope below FS access road; ca. 3,000 feet north of Fall River. 1036 Comment
  CHSC64111  Clarkia mosquinii L. P. Janeway 1994-7-7 4685 Butte Along Rd 23N60 0.9 mi east of Oroville-Quincy Hwy; south end of ridge above Little North Fork between Marble Creek and Spoon Ravine. 1127 Comment
  JEPS109585  Clarkia mosquinii Dean Wm. Taylor, Tom Engstrom 2002-7-3 18214 Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville, along Forest Road 20N24) 975 Comment
  RSA21171  Clarkia purpurea subsp. quadrivulnera Carl B. Wolf 1937-5-14 8662 Butte Sierra Nevada Foothills, 2.5 miles SE of Oroville on road to Wyandotte. 91 Comment
  UC569733  Clarkia purpurea subsp. quadrivulnera F. W. Embree 1934-4-24 43 Butte 4 1/2 mi n and 1 1/2 mi e Biggs; Marysville Quadrangle 38 Comment
  CAS-BOT-BC164780  Clarkia rhomboidea John Thomas Howell 1962-6-15 37470 Butte Magalia 731 Comment
  CHSC26849  Clarkia rhomboidea M. S. Taylor; M. Hayes 1978-6-24 1642 Butte On n side of Old Humboldt Rd at jct of Butte Creek and Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  CHSC59111  Clarkia rhomboidea L. P. Janeway 1991-6-1 3976 Butte East-facing cut-bank of Dark Canyon Road 0.3 mi south of Big Bend Road/Parkhill. Near canyon bottom. 573 Comment
  CHSC70751  Clarkia rhomboidea L. P. Janeway 1993-6-23 4402 Butte Along Road 23N28 0.2 mi south of crossing of Last Chance Creek. 807 Comment
  CAS-BOT-BC164788  Clarkia rhomboidea A. A. Heller 1928-5-27 14562 Butte At the sawmill on the Neal Road, Paradise Comment
  SEINET10841118  Clarkia rhomboidea Lowell Ahart 1984-6-8 Ahart 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC36088  Claytonia lanceolata R. A. Schlising; F. J. Fuller, K. Tarp 1982-7-12 4316 Butte NE part of county near Humbug Summit. 2042 Comment
  CHSC43719  Claytonia palustris Vernon Oswald 1983-6-22 738 Butte Soda Springs Campground near Calif. Hwy 32, 17.8 mi n-e of Forest Ranch. 1112 Comment
  SEINET4855086  Claytonia palustris John R. Swanson 1959-7-4 490 Butte Jonesville: S bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. 1550 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
  CHSC98971  Claytonia parviflora subsp. parviflora Lowell Ahart 2008-5-8 14718 Butte Below the high water line of Lake Oroville, about 300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  HSC72997  Claytonia parviflora subsp. parviflora M. S. Taylor 1980-3-19 2392 Butte Macabes Creek Canyon, 100 ft. E of Lumpkin Rd., 2.5 mi. NE of its junction with Forbestown Rd., 18 mi. NE of Oroville 396 Comment
  CHSC39937  Claytonia perfoliata subsp. perfoliata M. S. Taylor; V. Oswald 1984-4-4 5379 Butte N side of Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. 182 Comment
  CHSC36363  Claytonia rubra subsp. rubra J. D. Jokerst; R. A. Schlising 1982-5-19 1580 Butte Open disturbed soil at Fall River Campground on N side of river and W of road. 1005 Comment
  CHSC56073  Claytonia rubra subsp. rubra L. P. Janeway 1988-6-16 2805 Butte East-facing slope above Butte Creek; along road in west side of the canyon 2.5 mi south of Humboldt Road. Soft soil of shady cutbank along the road. 1310 Comment
  CHSC42013  Clematis lasiantha Lowell Ahart 1961-5-4 4 Butte Along Humbug Road, east of Chico. 152 Comment
  JEPS88229  Clematis ligusticifolia Vernon H. Oswald and Lowell Ahart 1996-6-10 7742 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (at n end of the Riparian Sanctuary, Sacramento R. National Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  CHSC1733  Collinsia heterophylla R. M. Staley 1952-7-15 Butte Honey Run. 106 Comment
  CHSC84855  Collinsia heterophylla L. P. Janeway; John Hunt 2003-6-5 7811 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
  POM42868  Collinsia heterophylla C. C. Bruce 1897-04 1846 Butte Little Chico. Comment
  CHSC42872  Collinsia parviflora Lowell Ahart 1987-5-12 5639 Butte South of Lumpkin Rodge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  SEINET10964453  Collinsia sparsiflora var. bruceae Lowell Ahart 1991-4-8 Ahart 6643 Butte On a steep slope on the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Foothill Woodland. T17N R4E S11. 46 Comment
  HSC32685  Collinsia sparsiflora var. collina David Johnson 1974-4-20 49 Butte Table Mtn. Comment
  JEPS119840  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. 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
  CHSC101164  Collomia tinctoria Lowell Ahart 2009-5-15 15716 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  POM225859  Comandra umbellata subsp. californica J. H. Morrison 1932-5-1 s.n. Butte Durham. Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC23369  Convolvulus arvensis Robert A. Schlising 1974-9-4 3156 Butte Roadside along Hwy 32, 4.0 mi NE of junction with Hwy 99 in Chico. Comment
  CAS-BOT-BC285920  Conyza bonariensis Lowell Ahart 1974-11-21 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC286062  Conyza canadensis John Thomas Howell 1959-9-20 34705 Butte Feather River Highway at West Branch bridge Comment
  CAS-BOT-BC237927  Cordylanthus Lowell Ahart 1980-7-29 2495 Butte Along Hurleton Swedes Flat Road 600 Comment
  CHSC112539  Cordylanthus pilosus subsp. hansenii B. Castro 2012-10-18 1989 Butte Sycamore Creek Sediment Removal Project: Revegetation Phase. Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca 700 ft downstream (WSW) of its crossing under the Cohasset Hwy bridge. 56 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
  RSA719716  Cordylanthus pilosus subsp. pilosus Michael A. Vincent, K. Levings 2006-7-29 12895 Butte NE of Chico along Rt. 32. Comment
  CDA41358  Cordylanthus pilosus subsp. trifidus L. Ahart 2003-8-7 10479 Butte On the south side of a poor dirt road, about 1/2 mile north of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CDA5367  Coriandrum sativum L. Ahart 2001-5-1 8742 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
  CHSC3311  Cornus florida M. Gregg 1966-4-13 65 Butte CSC campus behind the dining hall. Chico. Comment
  UC1122787  Cornus nuttallii C. G. Albertus 1933-7-3 40 Butte 1 3/4 mi. n.e. Promontory Point (Plot 67); Chico Quad. 1127 Comment
  UC202363  Cornus sericea subsp. sericea H. M. Hall July 1914 Butte Butte Creek near Jonesville; Butte Creek 1554 Comment
  POM77766  Cornus sessilis Mrs. R. M. Austin 1883-06 s.n. Butte Lomo Comment
  POM196109  Corydalis caseana E. B. Copeland 1929-7-3 s.n. Butte Jonesville. 1500 Comment
  CHSC43140  Corydalis caseana subsp. caseana R. Banchero; R. Schlising 1981-7-25 630 Butte Jones Meadow Ca 5 air miles e of Inskip. 1842 Comment
  CAS-BOT-BC401847  Corydalis caseana subsp. caseana H. F. Copeland 1920-8-2 203 Butte In Butte Creek 1676 Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS115259  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
  UC1586404  Cotoneaster pannosus Lowell Ahart 1991-5-31 6658 Butte Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, southwest of Orovillle Dam 213 Comment
  CHSC113357  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC36291  Crassula aquatica M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4358 Butte Graylidge Waterfowl Refuge, n side of Rutherford Rd, w of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC116010  Croton setiger Lowell Ahart 2015-10-9 20543 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
  CHSC21785  Crucianella angustifolia Robert A. Schlising 1974-5-19 3131 Butte 3 mi S of jct Neal Road and Skyway in Paradise. Comment
  CHSC38654  Crucianella angustifolia Vernon Oswald 1983-6-2 599 Butte Upper Bidwell Park, Chico, along Yahi Trail W of Brown's Hole. 195 Comment
  UCD80865  Crucianella angustifolia Robert E. Preston 2007-6-7 2557 Butte North Table Mountain, along Cherokee Rd, 0.65 mi N of Oregon Gulch Rd. 417 Comment
  UCD121549  Crucianella angustifolia W. R. Powell 1968-5-16 1504 Butte 1/2 mile northeast of Lake Wyandotte. 496 Comment
  CLARK-A1528-1241  Crypsis niliacea John C. Roos 1939-7-3 1521 Butte Chico Comment
  CAS-BOT-BC190092  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 northeast of Oroville. 269 Comment
  CHSC30279  Crypsis schoenoides M. S. Taylor 1978-9-8 1882 Butte Along slough, ca. 4 mi n of Chico on Hwy 99. 60 Comment
  UCD59960  Crypsis vaginiflora A. A. Heller 1914-7-31 11632 Butte Chico-Hamilton road, 6 miles from Chico. Comment
  JEPS121985  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  SD6774  Cryptantha affinis Daniel Cleveland Jul 1882 Butte Comment
  CHSC39027  Cryptantha flaccida Lowell Ahart 1984-5-18 4607 Butte Peter Ahart Ranch, about 1.5 mi n and 1.25 mi e of Honcut, and about 12 mi s of Oroville. 50 Comment
  CHSC94054  Cryptantha flaccida R. D. Fischer 2005-4-9 728 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant growing in the deeper soil of the roadside drainage. 518 Comment
  HSC101088  Cryptantha flaccida L. Ahart 1983-6-26 4119 Butte About 15 mi. NE of Oroville; along Ponderosa Way, ~2.0 mi. SE of the intersection of the Oroville-Quincy Highway and Ponderosa Way. 500 Comment
  CHSC29960  Cryptantha intermedia R. A. Schlising; R. Banchero 1980-6-2 3617 Butte 3.2 mi S of Forest Ranch along Hwy 32. Comment
  SEINET10935928  Cryptantha intermedia Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4742 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
  CDA40502  Cryptantha torreyana T. C. Fuller 1962-7-12 9169 a Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC44897  Cryptogramma acrostichoides Lowell Ahart 1988-7-31 6164 Butte About 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  SDSU1733  Cupressus macnabiana D. F. Howe 1966-9-1 4315 Butte Magalia 579 Comment
  UC1134222  Cupressus macnabiana H. A. Jensen 1933-12-15 369 Butte 1 mi sw Brownsville; Smartsville Quadrangle Comment
  UC333578  Cupressus macnabiana J. G. Lemmon 1895-12-2 Butte Magalia Comment
  SEINET10966021  Cupressus macnabiana Mary Susan Taylor 1975-5-9 Taylor 568 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  CAS-BOT-BC224427  Cuscuta californica Lowell Ahart 1985-6-17 5066 Butte 120 yards south of the dirt road, Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 975 Comment
  RSA718398  Cuscuta californica L. Ahart 2006-7-4 12911 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 31 Comment
  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
  CHSC48359  Cuscuta californica var. californica Vernon Oswald 1988-6-14 3378 Butte Jordan Hill Rd. 1.0 mi (odometer) e of the West Branch of the Feather River. 579 Comment
  CHSC27087  Cuscuta howelliana Lowell Ahart 1978-9-7 1804 Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD126290  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte east of fence, east of cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC41976  Cynodon dactylon Lowell Ahart 1986-11-14 5465 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larking Road, about 6 miles south-west of Oroville. 36 Comment
  SEINET10507350  Cynodon dactylon Mary Susan Taylor 1977-10-10 Taylor 1521 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  CHSC27949  Cynoglossum grande M. S. Taylor 1979-3-20 1943 Butte Ca. 1 mi n of jct of w br. Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 30 Comment
  CAS-BOT-BC190395  Cynosurus echinatus Lowell Ahart 1983-6-12 4035 Butte Seven miles southwest of Feather Falls, ca. 1 mile south of Crystal Hill, near Oregon Gultch, near Lake Oroville. 425 Comment
  CDA38936  Cyperus acuminatus L. Ahart, Vernon H. Oswald 1999-8-13 8142 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  UC907516  Cyperus albomarginatus John E. Chattin and Carroll Ferrell 1946-10-15 Butte 8 mi. n.e. Butte City 30 Comment
  SEINET10872741  Cyperus aristatus Lowell Ahart 1985-11-7 Ahart 5232 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  CAS-BOT-BC114705  Cyperus bipartitus Lowell Ahart 1987-8-30 5865 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CHSC68352  Cyperus bipartitus L. P. Janeway 1987-6-20 2272 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
  JEPS128616  Cyperus bipartitus Lowell Ahart 2017-8-22 21657 Butte On the north edge of North Honcut Creek, about 1 mile north and 2 3/4 east of Honcut, about 13 miles southeast of Oroville. Comment
  CHSC45125  Cyperus difformis Vernon Oswald 1987-8-13 3214 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. Gravel bar along the river. 48 Comment
  SEINET13709788  Cyperus difformis Lowell William Ahart, Lowell William Ahart 2002-1 9930 Butte E Side Cherokee Rd., 1 Mi. N of Oroville (39 Deg 31'49.5"N, 121 Deg 33'15"W) 427 Ft. 130 Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  UCD141009  Cyperus difformis John Thomas Howell 1959-9-20 34637 Butte eastern outskirts of Oroville. 60 Comment
  CDA34640  Cyperus eragrostis L. Ahart 2009-6-3 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC102829  Cyperus eragrostis Lowell Ahart 2009-6-30 15968 Butte On the east side of Ten Mile House Road, about 30 yards east of Big Chico Creek, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC38900  Cyperus eragrostis Vernon Oswald 1983-6-11 665 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC68384  Cyperus eragrostis L. P. Janeway 1988-6-29 2905 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  JEPS118059  Cyperus eragrostis Lowell Ahart 2011-8-17 17626 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile HOuse Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  JEPS120017  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  UC1100533  Cyperus eragrostis Herbert L. Mason and Verne Grant 1946-8-15 13049 Butte near caretaker's house Greylodge Game Refuge (#833 Irrigation Ditch); Butte Sink, Greylodge Game Refuge Comment
  CDA38925  Cyperus eragrostis L. Ahart 1999-9-21 8272 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  POM313104  Cyperus eragrostis H. L. Mason, Verne Grant 1945-7-10 12634 Butte Along Butte Creek, north of Marysville Buttes, Grey Lodge Game Refuge, southern Butte County, Butte Sink Comment
  CHSC113130  Cyperus erythrorhizos Lowell Ahart 2013-11-17 19267 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  RSA365082  Cyperus erythrorhizos H. F. Copeland 1923-7-9 550 Butte Nelson. Comment
  CAS-BOT-BC114222  Cyperus flavescens John Thomas Howell 1961-9-22 36790 Butte Arch Rock Tunnel, North Fork of Feather River. 487 Comment
  CHSC75977  Cyperus flavescens Lowell Ahart; Vernon H. Oswald 1999-8-13 8143 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
  CHSC43783  Cyperus fuscus Vernon Oswald 1983-8-19 1005 Butte Upper Bidwell Park, Chico, 0.2 mi e of the end of the pavement on Upper Park Rd. Growing at the edge of Chico Creek. 91 Comment
  JEPS119912  Cyperus iria Lowell Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of Oroville Airport. Comment
  UC1100646  Cyperus niger Herbert L. Mason and Verne Grant 1946-9-27 13141 Butte 3 mi. w. Biggs Comment
  UCD141194  Cyperus niger L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  UC766083  Cyperus squarrosus R. F. Hoover 1936-5-21 1168 Butte 7 mi. n. Chico Comment
  CAS-BOT-BC114208  Cyperus strigosus Ira L. Wiggins 1928-9-9 3337 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  JEPS98272  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte 4 air miles SW of Oroville (Oroville Wildlife Area, 1/2 mi W of Pacific Heights Road) 42 Comment
  CHSC19696  Cystopteris fragilis L. A. Wright Jr. 1971-3-28 3 Butte Ca. 1/4 mi e on a dirt road, off of Centennial Rd, which passes Hooker Oak Pool. S bank of Big Chico Creek across from the Municipal Golf Course building, ca. 50 ft up the cliff. Comment
  CHSC97182  Cystopteris fragilis Lowell Ahart 2007-5-22 13919 Butte About 1/8 mile south of Bald Rock Dome, on the west side of Dome Trail, trail leads to the Middle Fork of the Feather River, about 200 yards northeast of trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CAS-BOT-BC190482  Dactylis glomerata M. S. Taylor 1978-7-21 1815 Butte On south side of Oroville-Quincey Highway. Ca. 14 miles north of Lake Madrone. 1463 Comment
  CHSC28140  Damasonium californicum J. D. Jokerst 1979-5-6 215 Butte Ditch. Cox Ln, 0.8mi w. of intersection with Palermo Honcut Hwy. Comment
  CHSC5967  Darmera peltata M. MacArthur 1968-6-17 184 Butte SE edge of Big Chico Creek just below Headhouse, Chico State College campus. 60 Comment
  JEPS115541  Darmera peltata Lowell Ahart 2009-5-15 15714 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  JEPS95790  Datisca glomerata Lowell Ahart and Vernon H. Oswald 1999-10-3 8289 Butte about 1 mi SE of Ord Ferry (E side of river, NW of Parrott Landing, about 2 mi SE of Ordbend, about 12 miles (air) SW of Chico); Sacramento River 32 Comment
  CHSC40616  Datura wrightii Lowell Ahart 1985-9-14 5167 Butte On the east side of a building, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC23587  Delphinium depauperatum Nancy Mosman 1971-7-3 69 Butte In meadow along s side of Humboldt Road ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CAS-BOT-BC8569  Delphinium hansenii Lowell Ahart 1988-6-29 6086 Butte Along Bloomer Hill Road (Ponderosa Way), about 1.5 miles W of Oroville Quincy Highway 457 Comment
  CHSC1449  Delphinium nudicaule D. Sloan; L. Oliver 1935-2-23 Butte Salmon Hole in Chico Creek. 152 Comment
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May 10 2007
  CHSC77437  Delphinium patens Laura Bogni 1997-4-5 18 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET12093974  Delphinium variegatum Unknown 1988-1 37 Butte vic. Horseshoe Lake, ca 3 mi NE of Chico 91 Comment
  CHSC95162  Delphinium variegatum subsp. variegatum R. D. Fischer 2004-4-4 802 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy.32. Collected along Guardian Trail between Pine and Bloodypin Trails on an open grassy slope. 335 Comment
  NY387586  Dendromecon leiophylla A. E. Bidwell 05 1879 s.n. Butte [illegible] Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CAS-BOT-BC192653  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
  UCD62543  Deschampsia danthonioides R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 10 miles S of Oroville on Marysville Road. Comment
  SEINET10524175  Deschampsia danthonioides M. E. Banning 1969-4-18 Banning 84 Butte Annual hairgrass. Table Mt., 1/2 mi. S. junction to Ore. City, then W across mt. for approx. 1/2 mi. 488 Comment
  CAS-BOT-BC201750  Deschampsia elongata Lowell Ahart 1983-6-21 4073 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 425 Comment
  CHSC101755  Deschampsia elongata Lowell Ahart 2009-5-23 15737 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  LA206370  Deschampsia elongata E. B. Copeland; 1929-7-16 335 Butte Jonesville 1550.0 Comment
  RSA718078  Deschampsia elongata L. Ahart 2006-7-16 12996 Butte on the northwest edge of Willow Creek, about 3/4 miles (air) northwest of Jonesville, about 5 miles (air) northwest of Butte Meadows 1516 Comment
  CHSC97791  Dianthus armeria subsp. armeria L. P. Janeway 2007-8-12 9156 Butte Northern High Sierra Nevada. Along old Berry Creek Road 1.6 road km north of Oroville-Quincy Hwy; 1.8 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 421 Comment
  CHSC11912  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  CHSC23654  Dicentra formosa M. S. Taylor 1976-4-20 1078 Butte On e side of Ridge Rd, ca 100 m n of junction of Ridge Rd and Ponderosa Way, Magalia. 609 Comment
  CAS-BOT-BC402389  Dicentra formosa subsp. formosa H. F. Copeland 1929-6-9 s.n. Butte Jonesville 1524 Comment
  CHSC19655  Dicentra peregrina K. R. Stern 1966-5-14 Butte Chico. Comment
  CHSC21017  Dichelostemma capitatum subsp. capitatum M. S. Taylor 1975-3-10 408 Butte On s side of Honey Run Covered Bridge and Burre Creek, ca. 8 mi e of Chico. 182 Comment
  CHSC3558  Dichelostemma capitatum subsp. capitatum Gary Dutton 1966-2-14 12 Butte Found in upper Bidwell Park across from golf course. Comment
  CHSC51936  Dichelostemma multiflorum Diane Mastalir 1988-4-23 9 Butte 4 mi E of hwy 70 on Palermo Rd, 4 mi S on Palermo-Honcut Hwy, 0.5 mi E on Melody Lane. 41 Comment
  CHSC90608  Dichelostemma multiflorum Jose Romero 1983-4-20 19 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  SD111968  Dichelostemma multiflorum Barbara Ertter, Lowell Ahart, Jeffrey Strachan 1980-5-6 3271 Butte Peter Ahart Ranch, ca. 2I(c) miles north-northeast of Honcut, between Oroville and Marysville. Dried vernal pool previously plowed as grainfield, now reverted, very rocky. 29 Comment
  CHSC23664  Dichelostemma volubile M. S. Taylor 1976-4-26 1080 Butte Ca. 500 ft s of Bidwell Park Rd, ca. 1 mi w of Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC24870  Dichelostemma volubile T. L. Reynolds 1976-4-25 65 Butte Ca. 200 yds s of Butte Creek and ca. 400 yds sw of Covered Bridge, 6.9 mi ese of Chico. 121 Comment
  SEINET10905136  Dichelostemma volubile Mary Susan Taylor 1986-5-6 Taylor 5614 Butte Butte County; Along Cohasset Hwy, at Horse Trough, ca. 7 mi NNW of Chico. Foothill Woodland. With Vern Oswald and Lowell Ahart. 700 ft. 213 Comment
  CHSC48304  Dichondra donelliana Vernon Oswald 1985-3-17 1687 Butte Peter Ahart Ranch, ca. 1.5 mi n of Honcut. Near N. Honcut Creek. 45 Comment
  UC1476889  Dichondra donelliana Lowell Ahart 1979-4-28 Butte banks of creek ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  CDA42939  Digitaria ischaemum L. Ahart 2012-10-2 18494 Butte Soil and gravel bar on the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  RSA299272  Digitaria ischaemum J. T. Howell 1959-9-20 34642 Butte Lower foothills, eastern outskirts of Oroville 61 Comment
  CHSC40902  Digitaria sanguinalis Lowell Ahart 1985-11-7 5236 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC83011  Digitaria sanguinalis Lowell Ahart 2002-9-7 9926 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
  JEPS95929  Digitaria sanguinalis Lowell Ahart 1999-8-13 8154 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
  UC1953464  Diospyros virginiana Lowell Ahart 2010-6-12 16803 Butte North side of the pond, at the table, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 249 Comment
  SEINET13693686  Diplacus aurantiacus M. J. Williams, W. Roderick 1984-5-25 84- 24 -1 Butte Feather River Canyon, Hwy 70, near Arch Rock Tunnel. Comment
  CHSC28641  Diplacus douglasii M. S. Taylor 1979-3-31 1973 Butte Jct of Pentz-Magalia Rd and Pentz Rd, ca. 1/4 mi w of Hwy 70, se corner, ca. 22 mi n of Oroville. 198 Comment
  CAS-BOT-BC150507  Diplacus grandiflorus Lewis S. Rose 1933-5-26 33186 Butte Feather River Canyon, 5 mi. E. of Oroville 152 Comment
  CHSC3345  Diplacus grandiflorus Robert L. Smith 1966-5-17 5 Butte Honey Run Rd. 2 miles W of Paradise. Comment
  CHSC44789  Diplacus kelloggii R. Banchero 1980-6-19 256 Butte Along Concow Rd 4.95 mi N of its jct with Deadwood Rd, 5.8 mi N of the town of Concow. 646 Comment
  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
  CHSC71193  Diplacus kelloggii Lowell Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC153660  Diplacus mephiticus Lowell Ahart 1982-6-15 3584 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CAS-BOT-BC154034  Diplacus torreyi A. A. Heller 1914-5-18 11414 Butte West slope of the Sierra near Forest Ranch 822 Comment
  CHSC12183  Diplacus tricolor Lowell Ahart 1973-4-6 Butte Peter Ahart Ranch. 45 Comment
  CHSC109854  Dittrichia graveolens L. P. Janeway 2012-10-17 11081 Butte Northern High Sierra Nevada. On dirt road shoulders at intersection of Olive Hwy (Hwy 162) and Kelly Ridge Road/Miners Ranch Road; Oroville East. 257 Comment
  CHSC97711  Dittrichia graveolens Lowell Ahart 2007-10-30 14506 Butte Both sides of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  SBBG128655  Dittrichia graveolens L. Ahart 2008-11-8 15445 Butte parking area on W side of the Midway, W of intersection of Midway and E Park Avenue, Chico 60 Comment
  CHSC13898  Dodecatheon clevelandii subsp. patulum J. F. Goodwin 1972-3-4 177 Butte 3.8 mi ne on Cherokee Road from Table Mountain Road; on northwest side of road in open grassy meadow near oak tree. Comment
  CHSC3620  Dodecatheon clevelandii subsp. patulum John Francis 1966-2-21 22 Butte 1/2 mile S. of intersection on Neal Rd. and Hwy 99E on Neal Road. Plant growing in pasture. Comment
  UC22402  Dodecatheon clevelandii subsp. patulum Carl Purdy 1898-2-23 Butte Chico Comment
  SD122581  Downingia bicornuta Lowell Ahart 1984-5-8 4599 Butte 2.5 miles north and 1.4 miles east of Honcut, ca. 12 miles south of Oroville. 39 Comment
  SEINET8039331  Downingia bicornuta B. Ertter, J. L. Strachan, L. Ahart 1980-5-7 3290 Butte Peter Ahart Ranch, ca 2-1/2 miles NNE of Honcut, between Oroville and Marysville. 30 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
  UC398683  Downingia bicornuta var. bicornuta A. A. Heller 1927-5-3 14363 Butte 9 mi n Chico Comment
  CHSC47396  Downingia cuspidata Lowell Ahart 1978-5-2 1701 Butte Growing in shallow water in a vernal pool, near the large parking area on top of Table Mountain, about 7 miles north of Oroville. 426 Comment
  RSA424713  Downingia cuspidata Aaron Liston, M. Blumler 1987-4-24 658 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CHSC2377  Downingia ornatissima var. ornatissima R. Carter 1965-5-13 198 Butte Exact location unknown, but found somewhere along the Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  SEINET10448465  Draba verna Mary Susan Taylor 1973-1 Taylor 63 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC39776  Draba verna var. aestivalis David A. Durham 1978-3-22 10 Butte S slope of Butte Creek, near Covered Bridge on Honeyrun Road, 6.5 mi se of Skyway--Highway 99 Junction, at Chico. 137 Comment
  CAS-BOT-BC159641  Drymocallis glandulosa var. glandulosa Lowell Ahart 1985-5-15 774 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  UC481574  Drymocallis lactea H. F. Copeland 1931-6-11 Butte woods by Butte Creek Meadows (Jonesville); , Jonesville 1828 Comment
  CAS-BOT-BC70854  Dryopteris arguta Lowell Ahart 1983-7-24 4207 Butte Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CHSC3432  Dryopteris arguta Judy Potter 1966-3-7 112 Butte Above Honey Run Bridge. 2.3 miles south The Skyway. Comment
  RSA712997  Dryopteris arguta L. Ahart 2006-5-19 12634 Butte 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. 406 Comment
  UCD80275  Dryopteris arguta CNPS SN Foothill Team 2005-3-30 SNFN 0070 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  UCD80276  Dryopteris arguta CNPS SN Foothill Team 2005-4-6 SNFN 0097 a Butte CDFG North Table Mountain Wildlife Area, Coal Canyon. 377 Comment
  CAS-BOT-BC70859  Dryopteris arguta Wayne D. Dakan 1974-4-15 s.n. Butte near Pulga Comment
  CHSC4511  Dudleya cymosa C. Glascock 1965-5-15 417 Butte 15 Miles House area, 10.4 mi. ne of Chico city limits. Ca. 8 yds downihill from road. Comment
  CHSC38406  Dudleya cymosa subsp. cymosa Vernon Oswald 1983-4-25 394 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. 359 Comment
  UCD101932  Dudleya multicaulis R. Curtis 1995-5-27 8 Butte 10 m above Bear Hole, Big Chico Creek, approx. 6 miles south of Bidwell Road in Upper Bidwell Park. Comment
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Apr 7 2018
  JEPS120583  Dysphania pumilio Lowell Ahart 2013-11-18 19272 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  UCD98828  Dysphania pumilio J. A. Ream 1931-7-21 2240 Butte Paradise. Comment
  SEINET6830746 Image available Echinochloa crus-galli L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville 50 Comment
  UCD60928  Echinochloa crus-galli Leonard 1921-6-16 X- 3094 Butte Chico. Comment
  CAS-BOT-BC208574  Echinochloa oryzoides Lowell Ahart 1974-11-9 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  POM313038  Echinodorus berteroi H. L. Mason, Verne Grant 1946-8-7 12989 Butte Gridley road N of Butte Sink. Comment
  UCD137954  Echinodorus berteroi Herbert L. Mason; Verne Grant 1946-9-4 13107 Butte Butte Sink. 833 Canal, West Gridley Road. Comment
  CHSC114971  Elatine Lowell Ahart 2015-3-31 19983 Butte Bottom of a large duck field, 50 yards north of Parking Lot 3, about one mile north of Rutherford Road, Gray Lodge Wildlife Area, about 6-1/2 miles (air) southwest of Gridley. 19 Comment
  JEPS122234  Elatine Lowell Ahart 2014-4-26 19411 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  POM312315  Elatine ambigua H. L. Mason, Verne Grant, C. T. Mason 1946-8-15 13052 Butte #833 Irrigation Ditch, near caretaker's house, Greylodge Game Refuge, Butte Sink. Comment
  CHSC45272  Elatine californica Vernon Oswald 1988-4-18 3276 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 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
  SEINET10447967  Elatine rubella Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4200 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  JEPS98372  Eleocharis acicularis Lowell Ahart 2000-7-11 8579 Butte 4 air mi NE of Feather Falls (N side of Lumpkin Ridge Rd, upper W branch of Know-nothing Creek, 1 mi SW of int. of Lumpkin Ridge Rd, rd to Fall River, and the County Rd) 1219 Comment
  CHSC11930  Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CHSC46597  Eleocharis bella V. Oswald; L. Ahart 1989-7-21 3869 Butte Junction of Willow and Colby Creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. In a depression on the w side of Colby Creek. 1487 Comment
  CHSC59013  Eleocharis bella Lowell Ahart 1992-7-21 6812 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC1564729  Eleocharis bella V. Oswald and L. Ahart 1989-7-21 3869 Butte 1 mi W of Jonesville (confluence of Willow and Colby Creeks, on W side of Colby Creek on N side of Humboldt Road) 1487 Comment
  CAS-BOT-BC113458  Eleocharis bella A. A. Heller 1963-7-16 63 52 b Butte Headwaters of Chico creek in Chico meadows. 1219 Comment
  CHSC78294  Eleocharis bolanderi Lowell Ahart 2000-7-7 8560 Butte Seeps, on the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC58283  Eleocharis engelmannii Lowell Ahart 1992-5-23 6774 Butte Fallow rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC76853  Eleocharis engelmannii L. P. Janeway 1999-6-26 6488 Butte Sacramento Valley. Sandy deposits along east side of Sacramento River 1.0 mi southeast of Ord Ferry Road bridge. 28 Comment
  UCD49723  Eleocharis engelmannii Beecher Crampton 1957-9-17 4630 Butte Biggs Rice Exper. Sta. 5 miles northwest Biggs, Butte County. Comment
  SEINET10466887  Eleocharis engelmannii Lowell Ahart 1983-6-6 Ahart 4027 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC55452  Eleocharis macrostachya L. P. Janeway 1991-4-7 3992 Butte Ca 0.3 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 30 Comment
  CHSC8227  Eleocharis macrostachya K. Henegar 1969-4-15 70 Butte At drainage of Horse Shoe Lake, near Municipal Golf Course. Comment
  CDA38943  Eleocharis macrostachya T. C. Fuller 1976-7-8 20147 Butte Biggs Rice Exp. Station, 5 km. north of Biggs. 0 Comment
  SEINET10466725  Eleocharis macrostachya John Thomas Howell 1959-9-20 Howell 34660 Butte Lower foothills, estern outskirts of Oroville. Plants of the Sierra Neveda. Comment
  SEINET13711130  Eleocharis macrostachya Lowell William Ahart, Lowell William Ahart 2000-1 8702 Butte E Side of Sacramento River, NW of Parrott Landing, 12 Air Mi. SW Chico Comment
  CAS-BOT-BC113142  Eleocharis pachycarpa John Thomas Howell 1954-5-18 29840 Butte 1.5 mi NNE of Buena Vista 91 Comment
  SEINET13711167  Eleocharis parishii Lowell William Ahart, Lowell William Ahart 2000-1 8409 Butte 2 Mi. S of Paradise (T22N, R4E, sec 31, NE 1/4) 1800 Ft. 549 Comment
  CHSC66683  Eleocharis quadrangulata Vernon H. Oswald; Lowell Ahart 1996-7-22 8092 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the S side of Tract 3.1, Sanctuary II. 32 Comment
  JEPS98350  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte 5 air miles E of Magalia (by the road culvert, NW side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  SEINET7587005 Image available Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte West of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 404 Comment
  JEPS117522  Eleusine indica Lowell Ahart 2010-9-24 17240 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park 99 Comment
  CHSC61551  Elymus elymoides subsp. californicus Lowell Ahart 1993-6-20 7005 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC102158  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15794 Butte On dry soil, on the east side of Big Chico Creek, about 30 yards south of the gate, on both sides of north side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  CAS-BOT-BC234106  Elymus multisetus John Thomas Howell 1955-6-14 30461 Butte Magalia 731 Comment
  CHSC49577  Elymus multisetus Vernon Oswald 1987-6-2 2944 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. 883 Comment
  UCD62442  Elymus multisetus John Thomas Howell 1962-6-15 37528 Butte Magalia. 731 Comment
  UCD62600  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  UC1594716  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte about 1/2 mi n Flea Valley (e of intersection, about 4 1/2 air mi ne of Concow Reservoir) 1158 Comment
  CHSC10547  Enemion occidentale Lowell Ahart 1970-3-18 Butte Swede's Flat Road, near Bangor. 121 Comment
  CHSC46840  Enemion occidentale Kirsten Tarp 1983-4-3 253 Butte S part of county on Swedes Flat Rd. 335 Comment
  UC600545  Epilobium brachycarpum H. F. Copeland 1932-7-26 Butte Butte Creek Canyon Jonesville (along fisherman's trail) Comment
  UCD105375  Epilobium brachycarpum G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13064 Butte Northern Sacramento Valley. East Gridley Road at the west edge of the Feather River bridge. 27 Comment
  SEINET10453001  Epilobium brachycarpum Lowell Ahart 1985-10-12 Ahart 5201 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC43426  Epilobium campestre Lowell Ahart 1977-7-10 1463 Butte On the bottom of a slough, about 1/10 mile north of Middle Honcut Road, about 1 mile north-west of Honcut. 30 Comment
  CHSC12078  Epilobium canum subsp. latifolium R. N. Bowman 1971-6-11 57 Butte Found on cliffs overlooking Big Chico Creek, Fern Banks, Bidwell Park, Chico. 64 Comment
  CHSC51003  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-7-4 6540 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC94256  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2006-7-16 12986 Butte On the east side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  JEPS115361  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
  JEPS120599  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2013-11-17 19265 A Butte McCabe Creek, below the high water line of Lake Oroville, about 5/8 mile southwest of the enterprise Bridge across Lake Oroville. Comment
  UC600546  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-19 Butte beside Butte Creek (near the source); Jonesville 1800 Comment
  CDA42891  Epilobium cleistogamum L. Ahart 2012-6-4 18154 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. Comment
  CHSC1087  Epilobium densiflorum V. Holt 1942-6-17 Butte Pentz. Comment
  RSA700273  Epilobium densiflorum L. Ahart 2004-7-20 11287 Butte North side of a deep wash, about 200 yards north of the home, Peter Ahart Ranch, about 1.5 miles north and 1 mile east of Honcut, about 12 miles (air) south of Oroville 30 Comment
  UC873166  Epilobium densiflorum A. A. Heller 1914-8-20 11691 Butte 5 mi s Pentz; Dry Creek Comment
  UCD106306  Epilobium densiflorum M. Vincent 1963-6-8 394 Butte Honey Run Road. Comment
  CHSC24765  Epilobium minutum P. J. Welch 1976-4-12 19 Butte Ca. 1 to 2 yds n of Crown Pt. Rd. and ca. 0.3 mi e of Crown Pt. Rd. intersection with Deer Crek Hwy. (Hwy. 32); 10.1 mi ene of Chico. 304 Comment
  CHSC32842  Epilobium minutum William Askea 1981-4-22 13 Butte Ca. 100 m w of Butte Creek and 1.2 km n of Magalia Reservoir, 2.5 km n of Magalia. 730 Comment
  SEINET10453181  Epilobium minutum Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4653 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10841085  Epilobium minutum Lowell Ahart 1984-6-8 Ahart 4674 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
  CHSC7140  Epilobium torreyi M. I. Moore 1969-4-22 12 Butte 20 ft. n of Pentz Rd., 200 yds. e of Hwy. 99. 76 Comment
  CHSC94606  Equisetum hyemale subsp. affine Lowell Ahart 2006-9-13 13323 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC101148  Equisetum laevigatum Lowell Ahart 2009-5-15 15685 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 Highway 32, about 10 miles northeast of Chico. 203 Comment
  CAS-BOT-BC57511  Equisetum telmateia E. B. Copeland 1899-4-1 s.n. Butte near Chico Comment
  CAS-BOT-BC204453  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  JEPS113672  Eragrostis cilianensis Lowell Ahart 2007-8-19 14490 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC75983  Eragrostis hypnoides Lowell Ahart; Vernon H. Oswald 1999-8-13 8151 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS103447  Eragrostis hypnoides Lowell Ahart 2002-10-17 10001 Butte Bottom of a wash, between the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CAS-BOT-BC284040  Eragrostis mexicana subsp. virescens Lowell Ahart 1986-11-7 1492 Butte EAst of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of the Gridley Bridge 28 Comment
  UCD64027  Eragrostis mexicana subsp. virescens A. A. Heller 1914-8-20 11688 Butte 8 miles north of Oroville near the base of Table mountain. Comment
  CHSC76863  Eragrostis minor L. P. Janeway 1999-6-26 6491 Butte Sacramento Valley. Along east side of Sacramento River 1.0 mi southeast of the Ord Ferry Road bridge. 28 Comment
  CAS-BOT-BC278504  Eragrostis pilosa Lowell Ahart 1987-5-27 5697 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CAS-BOT-BC278510  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 s.n. Butte Peter Ahart Ranch. Honcut 45 Comment
  CHSC102287  Eragrostis pilosa var. pilosa Lowell Ahart 2009-10-7 16408 Butte Larkin Road access to the Thermalito Afterbay, about 4 miles (air) southwest of Oroville. 41 Comment
  CHSC47617  Eragrostis pilosa var. pilosa Lowell Ahart 1974-10-20 667 Butte On the bottom of a swale, Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CAS-BOT-BC174105  Eremogone aculeata Anna Head 1921-7-20 s.n. Butte Trail above Round Lake, Feather River region Comment
  CHSC59504  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte At the end of the Enterprise Boat Launch Ramp, about 3/4 mile south of Rocky Point. 259 Comment
  CHSC73745  Ericameria nauseosa var. speciosa B. Castro 1996-8-20 714 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  UC1586589  Erigeron foliosus var. hartwegii Vernon H. Oswald and Lowell Ahart 1991-5-31 4637 Butte along the roadbed on the s side Thermalito Diversion Pool (at the drainage on the ne side of Sycamore Hill); Lake Oroville State Recreation Area, Sycamore Hill 76 Comment
  CAS-BOT-BC295166  Erigeron inornatus Vernon Oswald; Lowell Ahart 1987-7-1 3050 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville 1828 Comment
  POM193097  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 490 Butte Butte County: Jonesville. 1550 Comment
  CHSC48149  Erigeron inornatus var. inornatus Vernon Oswald; Lowell Ahart 1987-7-1 3050 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 west side of Scotts John Creek. 1828 Comment
  CHSC5964  Eriobotrya japonica M. MacArthur 1968-6-18 208 Butte E side of Big Chico Creek, just S of bridge near PSA bld., Chico State College campus. 60 Comment
  JEPS26744  Eriodictyon californicum P. C. Hutchison 1961-6-9 2096 Butte Canyon of the North Fork of the Feather River along highway US Alt. 40, 1 mi s (above) Pulga Bridge; canyon of North Fork of the Feather River Comment
  CHSC80857  Eriogonum dasyanthemum Lowell Ahart 2001-7-6 8884 Butte West of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord Bend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC44135  Eriogonum lobbii V. Oswald; L. Ahart 1988-7-29 3643 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. Locally abundant on a steep, gravelly slope on the n edge of ridge. 2103 Comment
  UCR111229  Eriogonum luteolum var. luteolum H. Dearing, M. Dearing 1938-6-21 2044 Butte 15 mi north of Chico on lava ridge 268 Comment
  CHSC44045  Eriogonum marifolium var. marifolium L. P. Janeway 1987-7-5 2458 Butte 2.5 mi north of Jones Mdw along rd to Philbrook Reservoir. 1920 Comment
  CHSC113771  Eriogonum nudum var. deductum Anna Kostikova; Glenn Litsios, Sarah Burgy 2010-7-1 151 Butte Sierra-Nevada mountains, Carpenters ridge: Humboldt road. Left side of the road. Comment
  CHSC63712  Eriogonum nudum var. pubiflorum Lowell Ahart 1994-10-23 7567 Butte Along the disturbed edge of the water ditch, about 2 3/4 miles north of De Sabla Reservoir, about 4 miles (air) west and 1/2 mile north of Stirling City. 853 Comment
  UC489637  Eriogonum nudum var. pubiflorum A. A. Heller 1917-7-26 12823 Butte Butte Meadows 1402 Comment
  CAS-BOT-BC268614  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 s.n. Butte Jonesville. Ridge between Jones and North Willow Creeks 1700 Comment
  UC1594558  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  SEINET11935016  Eriogonum umbellatum var. speciosum R. A. Schulising 1981-1 4136 Butte NE part of county,T22N,R5E,sec.2;serpentine outcrop along Coyote Gap Road,ca .5mi S of Coyote Gap 1219 Comment
  CHSC39091  Eriogonum ursinum var. ursinum R. A. Schlising 1980-7-28 3935 Butte N part of county, E of Jonesville on road to Scotts John Creek. Comment
  UCD101524  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte along Feather River near Oroville. 45 Comment
  CHSC38067  Eriophyllum lanatum var. croceum R. E. Preston 1982-6-23 312 Butte Ca. 1/4 mi N of Fall Creek, SW of Rag Dump. 1158 Comment
  JEPS97598  Eriophyllum lanatum var. croceum R. D. Stone and W. B. Davilla 1984-5-16 605 Butte 2 mi west of Stirling City (0.2 mi S of confluence of Little West Fork and Cunningham ravine); Little West Fork of West Branch Feather River 929 Comment
  CAS-BOT-BC308161  Eriophyllum lanatum var. grandiflorum A. A. Heller 1914-6-22 11484 Butte North slope at Little Summit near Butte Meadows 1463 Comment
  CAS-BOT-BC308165  Eriophyllum lanatum var. grandiflorum Lewis S. Rose 1931-3-28 s.n. Butte Oroville Comment
  CHSC329  Eriophyllum lanatum var. grandiflorum M. Roberson 1956-5-21 Butte Near Paradise along Skyway. 548 Comment
  CHSC33152  Eriophyllum lanatum var. grandiflorum L. E. Delight 1973-5-1 26 Butte Ca. 300 yds e from Centennial Ave, ca. 1 mi e of intersection of Centennial Ave and Manzanita Ave, Chico. 91 Comment
  CHSC36391  Eriophyllum lanatum var. grandiflorum Donald M. Burk 1982-4-25 132 Butte On N. side of Hwy. 32 ca. 11 mi. E. of Chico. 594 Comment
  SEINET10475231  Eriophyllum lanatum var. grandiflorum Mary Susan Taylor 1980-4-19 Taylor 2535 Butte S side of Humbug, NE of Centerville. With J.D. Jokerst. 366 Comment
  CHSC98941  Erodium cicutarium Lowell Ahart 2008-5-8 14722 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  POM88746  Erodium macrophyllum C. C. Bruce 1897-04 1932 Butte [No location information on label.] Comment
  UCD114817  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte Chico-Hamilton road 6 miles from Chico. Comment
  UCR88747  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Sacramento Valley, along the Midway, 0.5 mile south of Durham 45 Comment
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Oct 10 2010
  UC1551929  Eryngium castrense Aaron Liston, Sara Meury 1988-5-28 743 -5 Butte 15 km (air) SE of Chico (1/4 mi S of Pentz Road, 1/8 mi E of Hwy. 99) 55 Comment
  CAS-BOT-BC40749  Erysimum capitatum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC8584  Erythranthe bicolor B. Jackson 1968-5-5 26 Butte Taken ca. 1 mi S. of Cohasset Grammar School on E. side of Cohasset Rd. along small, slow moving stream area unfenced. 609 Comment
  CHSC112718  Erythranthe breweri Lowell Ahart 2013-10-26 19219 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC63665  Erythranthe breweri B. Castro; R. Zebell 1989-6-8 314 a Butte Ca 3 mi S of Brush Creek, ca 0.1 mi E of Bald Rock Rd in damp granite sandy flats by old logging road. 1005 Comment
  CHSC65178  Erythranthe cardinalis Lowell Ahart 1995-8-19 7617 Butte East side of North Huncut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CHSC84459  Erythranthe guttata Lowell Ahart 2003-8-6 10477 Butte On cliffs, along a 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. 497 Comment
  CHSC44667  Erythranthe nasuta R. Banchero 1980-4-11 106 Butte Along Honeyfrun Rd ca 3.6 mi NE of the Covered Bridge, Ca 3.7 mi SW of Paradise. 243 Comment
  CHSC105187  Erythranthe pulsiferae B. Castro; L. P. Janeway 1999-8-1 1024 Butte NE shore of Summit Lake, ca 0.7 mi NE of Snow Mtn. 1886 Comment
  CHSC27202  Erythrina corallodendron Pam Moyer 1971-10-30 54 Butte CSUC Campus. NE corner of Bidwell Mansion porch. Comment
  SEINET10938447  Erythronium cliftonii Mary Susan Taylor 1979-3-19 Taylor 1925 Butte T23N R5E Pulga quad. In the vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi NE of Oroville. 488 Comment
  CHSC33719  Erythronium multiscapideum M. S. Taylor 1981-4-8 3515 Butte S side of Ponderosa Way on Rocky Ridge looking down into Flea Valley Creek cyn and Pulga, ca. 6.5 mi n of Jarbo Gap on Hwy 70, ca. 21 mi n of Oroville. 1005 Comment
  CAS-BOT-BC504527  Erythronium multiscapideum A. A. Heller 1915-3-19 11774 Butte Hills 12 miles northeast of Chico near Rock creek Comment
  CAS-BOT-BC504539  Erythronium multiscapideum M. S. Taylor 1981-3-18 3422 Butte Around and w of bridge crossing West Branch of Feather River on Ponderosa Way (Jordan Hill Rd), both banks 579 Comment
  CHSC115442  Eschscholzia caespitosa M. Sutton; C. Yasuda, S. Luse 2013-4-9 21 Butte Centerville Flumes. 350 Comment
  CHSC33140  Eschscholzia caespitosa J. D. Jokerst 1979-3-20 1155 A Butte Table Mountain. Top of North Table Mt, above the waterfalls at the west edge of the mountain S fork of Coal Creek Canyon. Comment
  RSA795647  Eschscholzia caespitosa L. Ahart 2012-4-20 17898 Butte West side of South Rim Trail, animal trail north of Bloody Pin Trail, about 5/8 miles west of Highway 32, about 7 3/8 miles northeast of Chico, south part of Upper Bidwell Park. 256 Comment
  CAS-BOT-BC402637  Eschscholzia caespitosa A. A. Heller 1914-4-16 11296 Butte On the Chico-Centerville road 8 miles from Chico Comment
  CHSC3987  Eschscholzia californica E. P. Parreno 1967-4-13 Butte Beside the road of Chico cemetary. Comment
  RSA715717  Eschscholzia lobbii L. P. Janeway 2005-3-1 8331 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  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
  SBBG17169  Eschscholzia lobbii M. Vincent 1961-3-27 40 Butte Table Mtn, 3 mi E of Cherokee 762 Comment
  UC202227  Eucephalus breweri A. A. Heller 1917-7-29 12862 Butte summit above Jonesville 2133 Comment
  SEINET10841056  Euphorbia serpillifolia Mary Susan Taylor 1978-9-8 Taylor 1887 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  JEPS119520  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2011-10-29 17722 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  CHSC62356  Euphorbia spathulata B. Castro 1990-4-21 420 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. Near top of embankment at foot of canyon hillside. 146 Comment
  CHSC50816  Eurybia integrifolia Vernon Oswald 1990-7-23 4381 Butte Meadow at the headwaters of the east branch of Willow Creek, ca. 1 mile south of Humbug Summit. 1938 Comment
  CHSC58882  Eurybia integrifolia Lowell Ahart 1992-7-26 6861 Butte About 1/4 mile northeast of the Carr Mine, about 2 (air) miles southeast of Snow Mountain. 1798 Comment
  CHSC43242  Euthamia occidentalis Lowell Ahart 1987-9-29 5906 Butte On a road cut near a wash, near the dirt road, about 1 mile east of the Golden Trout Crossing across the South Fork of the Feather River, about 2 miles west of the Sly Creek Reservoir. 1158 Comment
  JEPS116069  Festuca arundinacea Lowell Ahart 2009-5-30 15797 Butte On dry soil, along a small stream, meadow, about 20 yards south of the fence and about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CHSC93936  Festuca californica L. P. Janeway 2006-5-28 8641 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 860 Comment
  UCR177719  Festuca microstachys var. ciliata Lowell Ahart 2006-5-10 12619 Butte north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.5 miles (air) southwest of Pulga 355 Comment
  CHSC49547  Festuca occidentalis Vernon Oswald 1987-6-2 2946 Butte Butte-Yuba County line about 3 mi ne of Forbestown, on the se side of Forbestown Reservoir Rd. Along a trail in forest. 883 Comment
  JEPS114824  Festuca subulata Lowell Ahart 2008-6-2 14807 Butte Shaded road cut, on the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1.4 miles (air) northwest of Forbestown 670 Comment
  JEPS87486  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte about 6 (air) mi n.e. Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River, s. of Fall River) 1036 Comment
  UC600748  Festuca subulata H. F. Copeland 1932-8-12 Butte Butte Creek Jonesville 1500 Comment
  JEPS119620  Ficus carica Lowell Ahart 2012-6-21 18227 Butte About 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC50551  Floerkea proserpinacoides Vernon Oswald 1990-7-3 4340 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. Along the south boundary fence in section 27. 1780 Comment
  CHSC12004  Fragaria virginiana E. B. Copeland 1929-7-16 373 Butte Jonesville. 1550 Comment
  CAS-BOT-BC62937  Frangula californica subsp. tomentella Lewis S. Rose 1945-5-12 45048 Butte Richardson Springs. 304 Comment
  CHSC34146  Frangula purshiana L. Ahart 1981-9-15 3151 Butte Along edge of rd, ca. 1/2 mi n of Lost Creek Reservoir, along Pinkard Creek. 1100 Comment
  JEPS103419  Frangula rubra Lowell Ahart 2002-6-2 9679 Butte Meadow, S of the intersection of Black Bart Road and Forbestown Road, ca 3 miles (air) SW of Forbestown. 670 Comment
  CHSC54322  Frankenia salina Vernon H. Oswald 1991-6-16 4665 Butte West Liberty Rd, 1.0 mile west of Pennington Rd, on the north edge of Gray Lodge. Roadside. 20 Comment
  SEINET10454869  Frasera albicaulis subsp. nitida Mary Susan Taylor 1980-6-14 Taylor 2880 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  RSA75273  Frasera albicaulis var. nitida Marion Ownbey, Gerald B. Ownbey, Findley Ownbey 1946-6-25 2944 Butte Butte Comment
  CHSC1084  Fraxinus dipetala M. Roberson 1956-5-2 Butte S.W. of Paradise, along the Skyway. 426 Comment
  SEINET10457423  Fraxinus dipetala Mary Susan Taylor 1976-4-27 Taylor 1088 Butte Abundant ca. 50 ft E of Cohasset Hwy, ca. 8 mi N of Chico; in Chaparral, with Cerococarpus betuloides, Adenostoma fasiculatum, Lepechnia calycina. 137 Comment
  CHSC20124  Fraxinus latifolia M. S. Taylor 1975-5-6 556 Butte Along s edge of Big Chico Creek, ca. 50 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  CHSC32632  Fritillaria eastwoodiae M. S. Taylor 1981-4-2 3475 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, ca. 3/4 mi ne (downhill) of Magalia. 548 Comment
  CHSC88648  Fritillaria eastwoodiae Linnea Hanson 1985-4-22 264 Butte Plumas National Forest. 853 Comment
  SEINET10469656  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3552 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, 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. 2600 ft. 792 Comment
  CAS-BOT-BC505286  Fritillaria micrantha Lowell Ahart 1983-4-14 3933 Butte On east side of Woodleaf Creek above the road, about 3/8 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown. 450 Comment
  CHSC4198  Fritillaria recurva J. E. Bowlin 1967-3-10 4 Butte Ca. 10 feet e of Cohasset Rd. and ca. 6.1 miles n of corner of Keefer Rd. and Cohasset Rd., Chico. 243 Comment
  CHSC54164  Galium aparine Lowell Ahart 1991-4-19 6646 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 and 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 45 Comment
  CHSC11821  Galium bolanderi E. B. Copeland 1930-7-25 474 Butte Jonesville. 1700 Comment
  CHSC96967  Galium bolanderi Lowell Ahart; Lawrence Janeway 2007-7-10 14284 Butte On the north side of Forest Road 21N31Y, about 6/10 mile west of Bald Rock Road, about 17 miles (air) northeast of Oroville. 1032 Comment
  HSC97151  Galium bolanderi L. Ahart 2006-6-9 12661 Butte E side of Bardees Bar Rd. 1/8 mile W of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) SW of Pulga 386 Comment
  JEPS52659  Galium bolanderi Lauramay T. Dempster 1964-7-24 4047 Butte Nimshew 731 Comment
  SEINET10500696  Galium bolanderi Mary Susan Taylor 1981-5-21 Taylor 3767 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  CHSC82401  Galium murale Lowell Ahart 2002-5-7 9631 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  SEINET10968829  Galium nuttallii Mary Susan Taylor 1979-3-20 Taylor 1940 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  JEPS119905  Galium parisiense Lowell Ahart 2012-5-20 18096 Butte On the south side of the Humboldt Trail, about 100 yards east of the Guardian Trail, southeast part of Upper Bidwell Park, northeast of Chico. Comment
  SEINET10500638  Galium parisiense Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4061 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
  CHSC30902  Galium porrigens var. tenue M. S. Taylor 1980-3-1 2349 Butte On SE facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise. 301 Comment
  JEPS115586  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road 461 Comment
  SEINET10500751  Galium trifidum subsp. subbiflorum Mary Susan Taylor 1975-9-12 Taylor 906 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  UC1562433  Gamochaeta argyrinea Lowell Ahart 1990-5-25 6481 Butte below high-water line Lake Oroville (e of the Enterprise boat launch area, about 1/8 mi nw of the Enterprise Bridge across Lake Oroville) 259 Comment
  SEINET10453489  Garrya fremontii Mary Susan Taylor, E. Pierce 1981-1-29 Taylor 3375 Butte Both sides of Cohasset Hwy, ca. 3 mi s of Cohasset. Chaparral. Comment
  CAS-BOT-BC282601  Gastridium phleoides Lowell Ahart 1988-8-24 6128 Butte At the intersection of Black Bart Road and Forbestown Road about 1 mile west of Robinson Mill Road 731 Comment
  CAS-BOT-BC282605  Gastridium phleoides A. A. Heller 1914-6-2 11474 Butte 8 miles north of Oroville 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
  CHSC6162  Gastridium phleoides E. Parreno 1968-4-15 54 Butte NE of Municipal Golf Course in Upper Bidwell Park on slope of ridge, Chico. Comment
  SEINET10559582  Gastridium phleoides A. Arthur Heller 1902-5-15 Heller 5555 Butte Near Biggs. Comment
  SEINET11688371  Gastridium phleoides Unknown 1985-1 5050 Butte Fields Ridge, about 4 mi SE of Feather Falls 792 Comment
  CHSC84437  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. 1771 Comment
  CHSC25423  Gayophytum heterozygum Hayes; Warner 1977-9-11 60 Butte Along shoulder, Hwy 32, ca. 2 m s of road, exactly 24.6 mi e of Hwy 99 overpass on Hwy 32 in Chico. 914 Comment
  CHSC37446  Gayophytum heterozygum R. A. Schlising; R. Banchero 1980-6-11 3873 Butte NE part of county at Stephens Ridge, just NW of Brush Creek. 1036 Comment
  CHSC62475  Gayophytum heterozygum L. P. Janeway 1993-7-31 4486 Butte Plumas National Forest, La Porte Ranger District. Along Cascade Road 0.6 mi north of Fall River crossing; between Mineral Springs Ravine and Dark Canyon. West-southwest facing road cutbank. 1066 Comment
  CAS-BOT-BC208056  Genista monspessulana Saichi Kawahara 1968-5-4 385 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CAS-BOT-BC208057  Genista monspessulana John Thomas Howell 1959-9-20 34676 Butte Lower foothills, eastern outskirts of Oroville 60 Comment
  JEPS117139  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest 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 southeast of Oroville 38 Comment
  UC600681  Gentianopsis simplex H. F. Copeland 1930-7-24 1317 Butte Jonesville Comment
  JEPS114965  Geranium carolinianum Lowell Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 264 Comment
  JEPS119997  Geranium carolinianum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17905 Butte Southwest of the intersection of Valllombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC108983  Geranium dissectum Lowell Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  UCD103375  Geranium dissectum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte Feather River, 4 mi. S. of Oroville. Comment
  CHSC50048  Geranium molle Lowell Ahart 1990-4-8 6435 Butte On steep banks, on the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC52341  Geranium molle Paulenn Broyles 1987-5-21 1047 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. At fence roadway NW of Wurlitzer buildings. Comment
  CHSC7096  Geranium molle R. Lewis 1969-4-2 19 Butte At end of paved road. Bidwell park. On shaded s facing slope. 70 Comment
  JEPS115328  Geranium molle Lowell Ahart 2009-4-17 15546 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
  SEINET12331839  Gilia capillaris Unknown 1985-1 5105 Butte 1 mi S of the Ponderosa Dam across the South Fork of the Feather River, about 3 mi NW of Forbestown 1585 Comment
  RSA550616  Gilia capitata subsp. mediomontana C. R. Quick 1951-6-6 51 -90 Butte N of Soda Springs on Big Chico Creek Comment
  CHSC42089  Gilia capitata subsp. pedemontana Rusti Gammon 1986-4-18 19 Butte Ca. 5 mi s of Centerville, ca. 20 yds w of Butte Creek above w bank. 91 Comment
  SEINET12319534  Gilia tricolor J. Rodriguez, Rodriguez, J. 1978-1 18 Butte ca 200 yds NE of Big Chico Creek, ca 2 mi NE of Horseshoe Lake, 5.4 mi NE of Hwy 99, Chico 131 Comment
  CAS-BOT-BC266589  Githopsis pulchella Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  UCD80199  Githopsis pulchella CNPS SN Foothill Team 2005-5-26 SNFN 0171 a Butte City of Chico, Upper Bidwell Park. The plot was accessed from Highway 32 on the east side of the park, located off of Humboldt Trail, approximately 100 m after the trail begins to descend from the top of the plateau. 402 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
  CAS-BOT-BC435022  Glinus radiatus C. C. Parry No date on label s.n. Butte Chico Comment
  CHSC44903  Gnaphalium palustre Lowell Ahart 1988-7-24 6126 Butte At the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road. 731 Comment
  CHSC94623  Gnaphalium palustre Lowell Ahart 2006-9-11 13277 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC97727  Gnaphalium palustre Lowell Ahart 2007-11-3 14567 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
  JEPS7404  Gnaphalium palustre Rimo Bacigalupi with Larry R. Heckard 1951-8-7 3476 Butte 0.3 mi w of Jonesville (on roadcut at crossing of Butte Creek, along road to Butte Meadows) 1524 Comment
  SEINET10938046  Gnaphalium palustre Mary Susan Taylor 1980-7-6 Taylor 3057 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  UCD132469  Grindelia camporum R. Curtis 1995-5-28 10 Butte 250 meters south of Bear Hole, Big Chico Creek. Approximately 5 miles south of Bidwell Park road in Upper Bidwell park. 300 Comment
  CHSC65447  Grindelia camporum var. camporum Vernon Oswald 1990-10-15 4468 Butte Arroyo Chico. East Ave just west of the Esplanade, Chico. Roadside. 54 Comment
  CHSC102958  Grindelia hirsutula var. davyi Lowell Ahart 2009-8-3 16263 Butte On the east side of Big Chico Creek, about 30 yards south of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC34713  Grindelia hirsutula var. davyi M. S. Taylor 1981-7-10 4059 Butte North side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC37365  Grindelia hirsutula var. davyi R. A. Schlising 1980-8-31 3976 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS119728  Gymnocladus dioicus Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18274 Butte Path in redwood grove north of the Deer Pen, near Table 9, Lower Bidwell Park, Chico. Comment
  UC1560381  Hackelia californica E. Joyal and D. Mehlman 1988-7-3 1308 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  CHSC115059  Hazardia whitneyi var. whitneyi Don Lepley 2013-7-16 Butte Lassen National Forest, Almanor Ranger District. Between Road 26N11 and its B-spur, roughly 1-1/4 air miles southeast of Humboldt Peak. 1859 Comment
  CAS-BOT-BC306289  Hedypnois cretica Roxana S. Ferris 1952-5-16 12476 Butte 5 miles south of Cherokee on road to Oroville Comment
  UC426989  Helenium bigelovii E. B. Copeland 1930-7-11 494 Butte Jonesville 1500 Comment
  CAS-BOT-BC309402  Helenium puberulum John Thomas Howell 1959-9-20 34710 Butte Feather River Highway at West Branch bridge Comment
  UC478462  Helianthella californica subsp. nevadensis E. B. Copeland 1931-6-22 695 Butte at the Summit; Jonesville Comment
  CAS-BOT-BC305346  Helianthus annuus Lowell Ahart 1980-8-16 2583 Butte Near Honcut 60 Comment
  CHSC38359  Helianthus bolanderi Vernon Oswald 1983-6-29 796 Butte Upper Bidwell Park, Chico, ca. 300 ft s of Upper Park Rd. and 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  RSA722688  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico. In the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET12636497  Heliotropium europaeum R. R. Halse 2006-8-2 6978 Butte Chico, in the Lindo Channel Greenway where it crosses under Mangrove Avenue. 92 Comment
  SEINET13711416  Heliotropium europaeum Lowell William Ahart, Lowell William Ahart 1999-1 8163 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  SEINET10935958  Heliotropium europaeum Lowell Ahart 1985-6-9 Ahart 5042 Butte Cherry Street, between 9th and 8th Street, Chico. Comment
  SEINET10475610  Hemerocallis fulva Mary Susan Taylor 1975-6-22 Taylor 782 Butte California State University, Chico, campus. 61 Comment
  SD5645  Hemizonella minima E. B. Copeland 1931-7-12 Butte On bare ridge between Jones and NOrth Willow Creeks. 1700 Comment
  CHSC37396  Hemizonia congesta subsp. luzulifolia R. A. Schlising 1980-8-31 3969 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Near and in largest pool. Comment
  CAS-BOT-BC309786  Hemizonia congesta subsp. luzulifolia John Thomas Howell 1955-9-6 30909 Butte Bank of Butte Creek east of Butte City on road to Oroville Comment
  CAS-BOT-BC309787  Hemizonia congesta subsp. luzulifolia Lowell Ahart 1982-9-9 3768 Butte About 100 meters north of the Check-in-Station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CAS-BOT-BC175999  Hesperolinon californicum Lowell Ahart 1988-5-12 5987 Butte About 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut 60 Comment
  UC109504  Hesperolinon micranthum Mrs. R. M. Austin 1883-1 Butte Comment
  JEPS127014  Heterocodon rariflorum Lowell Ahart 2016-5-24 20858 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
  SEINET10972526  Heterocodon rariflorum Conger CONGER 1907 Butte BRUSH CREEK Comment
  CAS-BOT-BC143632  Heteromeles arbutifolia Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  JEPS115260  Heteromeles arbutifolia Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15427 Butte On the south side of the gravel road and Big Chico Creek, about 300 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico 68 Comment
  CHSC62552  Hoita orbicularis B. Castro; J. Jurewicz 1993-7-7 469 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  CHSC84695  Hoita orbicularis L. P. Janeway 2003-6-8 7822 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1100 Comment
  JEPS46114  Hoita orbicularis Duncan Dunning 1922-7-18 Butte n Pulga; Flea Valley Comment
  CHSC34036  Holozonia filipes L. Ahart 1981-7-7 2914 Butte On bottom of a small dry stream bed, ca. 1 mi s of the Oroville-Forbestown Rd on the Hurleton Swedes Flat Rd. 600 Comment
  CHSC109604  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC113947  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2014-8-13 19708 Butte 20 yards east of the east edge of a large wet meadow (some bog), about 130 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC33671  Hordeum brachyantherum subsp. brachyantherum L. Ahart 1981-5-24 2836 Butte On banks of a wash on Peter Ahart Ranch, ca. 1.5 mi n and 1/15 mi e of Honcut. 50 Comment
  CHSC30553  Hordeum marinum subsp. gussoneanum J. D. Jokerst 1980-4-6 548 A Butte Along sides of Humboldt Rd. 1.0 mi W of the jct of Humboldt Rd and Hwy 32. Comment
  CHSC9345  Hordeum vulgare B. Anthony 1968-4-15 459 Butte 3 miles W. of Hamilton City on Hwy. 32. Comment
  CHSC29838  Horkelia californica subsp. dissita M. S. Taylor; R. S. Schlising, L. Ahart 1980-5-31 2765 Butte E side of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 3 mi s of Paradise. 441 Comment
  CHSC71189  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 Butte Margins of a seep, southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC46400  Horkelia tridentata Lowell Ahart 1989-5-28 6277 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC43125  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-5 2141 Butte Near confluence of Ram and French Creeks. 609 Comment
  CHSC45799  Horkelia tridentata subsp. flavescens L. P. Janeway 1988-6-19 2833 Butte 3.1 mi N of Stirling City towards Inskip. Along logging rd 0.2 mi W of The Skyway. Meadow. 1219 Comment
  CAS-BOT-BC536253  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CDA15322  Hydrocotyle umbellata D. Joley, B. Villegas 1998-9-24 s.n. Butte Sierra Nevada; below Lake Oroville in Oroville Wildlife Area. 0 Comment
  JEPS66842  Hypericum anagalloides W. L. Jepson 1937-8-17 19463 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
  CHSC3323  Hypericum concinnum Robert L. Smith 1966-5-22 48 Butte Paradise, 5 miles SW of Post Office. Comment
  SEINET10472175  Hypericum concinnum Mary Susan Taylor 1980-6-14 Taylor 2879 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  CHSC42461  Hypochaeris glabra Lowell Ahart 1987-5-6 5503 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10473838  Hypochaeris glabra Mary Susan Taylor 1981-4-28 Taylor 3569 C Butte T23N R5E sw sec 32 to T22N R5E ne sec 5 Pulga SW quad. Along Four Trees Rd, ca. 0.5 to 1 mi E of Hwy 70, ca. 2-3 mi NE of Pulga. Yellow Pine Forest; 2200-2400 ft. 670 Comment
  CAS-BOT-BC508346  Ipheion Lowell Ahart 1988-3-8 5929 Butte Peter Ahart Ranch about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 38 Comment
  CAS-BOT-BC133550  Iris hartwegii John Thomas Howell 1962-6-16 37557 Butte Magalia 731 Comment
  CAS-BOT-BC133558  Iris hartwegii Lewis S. Rose 1937-6-10 37373 Butte Forbestown 838 Comment
  CAS-BOT-BC133512  Iris hartwegii A. A. Heller 1939-3-23 15357 Butte 3 miles below Paradise on the Pentz road Comment
  RSA712968  Iris hartwegii subsp. hartwegii L. P. Janeway 1994-6-6 4659 Butte Northern High Sierra Nevada: East end of Watson Ridge; along Road 21N25 about 0.5 miles north of Fall River and about 1.7 miles west of Kenebeck Ridge 1159 Comment
  CHSC24780  Iris macrosiphon D. E. Hale 1976-4-10 16 Butte N side of Vilas Rd, ca. 25 m e of Vilas Rd. - Cohasset Hwy intersection, 24 km ne of Chico. 800 Comment
  CHSC39547  Isoetes howellii Lowell Ahart 1983-6-6 4031 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC71271  Isoetes howellii Lowell Ahart 1998-7-1 8023 Butte About 1/4 miles north of the lone oak tree, about 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC29220  Isoetes nuttallii M. S. Taylor; J. D. Jokerst 1980-3-28 2397 Butte Just e of Chico, ne corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi e of Hwy 99. 68 Comment
  CHSC87217  Isoetes orcuttii Lowell Ahart 2004-4-4 10726 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. 48 Comment
  CHSC45140  Isolepis setacea Lowell Ahart 1984-6-8 4685 Butte Along the edge of a seep, along the road gutter, Lumpkin Ridge Road, about 6 miles north-east of Feather Falls. 518 Comment
  CHSC61513  Isolepis setacea Lowell Ahart 1993-6-20 6975 Butte Along seep edges, about 1/2 mile south of Quartz Hill. 1219 Comment
  CHSC3283  Juglans californica var. hindsii M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CDA37214  Juncus acuminatus CDFA Staff 2004-7-1 s.n. Butte Thermalito Afterbay. 0 Comment
  UCD141307  Juncus articulatus subsp. articulatus L. Ahart 1983-6-26 4136 Butte East Fork of Canyon Creek, near Ponderosa Way (sign gives Big Ridge Road), about 14 miles northeast of Oroville. 1500 Comment
  POM180884  Juncus bufonius H. F. Copeland 1923-5-1 845 Butte Nelson. Comment
  CHSC28831  Juncus bufonius var. bufonius J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 423 Butte Top of North Table Mt, ca 1.0 mi n of jct of east edge of Mt and Cherokee Rd. 381 Comment
  CHSC47530  Juncus bufonius var. bufonius Lowell Ahart 1980-5-4 2214 Butte About 150 feet south-west of the intersection of Forbestown Road and Hurleton Swedes Flat Road, about 1/2 mile south-east of Hurleton. 548 Comment
  CHSC51026  Juncus bufonius var. bufonius Lowell Ahart 1990-7-4 6545 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC94045  Juncus bufonius var. bufonius R. D. Fischer 2005-9-1 709 Butte Sierra Nevada foothills, adjacent Hwy. 32, at the lower Humboldt Trailhead at the edge of Bidwell Park. Plants were growing on a springy slope, part of the old, by-passed, roadbed. 396 Comment
  JEPS107944  Juncus bufonius var. bufonius Lowell Ahart 2005-5-2 11775 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
  JEPS110163  Juncus bufonius var. bufonius Lowell Ahart 2006-10-8 13424 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC69727  Juncus bufonius var. occidentalis Lowell Ahart 1997-10-24 7935 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, stand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC26805  Juncus capitatus M. S. Taylor 1978-5-7 1601 Butte Richvale vernal pools, ca. 20 mi s of Chico on w side of Hwy 99. 30 Comment
  JEPS103414  Juncus capitatus Lowell Ahart 2002-4-24 9535 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  UC1495748  Juncus capitatus Barbara Ertter, Jeffrey L. Strachan, and Lowell Ahart 1980-5-7 3293 Butte ca 2.5 mi nne Honcut (between Marysville and Oroville, Peter Ahart Ranch) 30 Comment
  UC1562391  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  JEPS115641  Juncus dubius Lowell Ahart 2009-8-12 16292 Butte On dark wet soil or in shallow water, meadow, along small drainages, on the east side of Ten Mile House Road, Upper Bidwell park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  JEPS118054  Juncus dubius Lowell Ahart 2011-8-23 17648 Butte In the large meadow, Pinkard Creek flows through the meadow east of the corral, about 1 miles north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  CHSC96957  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-15 14304 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
  CDA36730  Juncus effusus subsp. pacificus Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, and Peter Zika 2011-8-5 16759 Butte 6.5 miles from the junction (which is at the edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of gravel Lumpkin Road. Comment
  CDA37217  Juncus effusus var. exiguus CDFA Staff 2004-10-18 s.n. Butte Thermalito Afterbay. 0 Comment
  JEPS118082  Juncus effusus var. pacificus Lowell Ahart 2011-8-19 17637 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1252 Comment
  CHSC34176  Juncus ensifolius L. Ahart 1981-9-15 3157 Butte On sides of Pinkard Creek, ca. 1/2 mi n of Lost Creek Reservoir. 1100 Comment
  JEPS127030  Juncus hemiendytus var. hemiendytus Lowell Ahart 2016-6-2 20907 Butte About 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. Comment
  CHSC44445  Juncus howellii Lowell Ahart 1988-6-29 6095 Butte Along a small seep south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 Comment
  CHSC68908  Juncus howellii Lowell Ahart 1997-7-11 7748 Butte Edges of a small stream from springs, north of the dirt road, 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
  JEPS110165  Juncus howellii Lowell Ahart 2006-8-15 13178 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
  JEPS45835  Juncus howellii Duncan Dunning 1921-7-29 Butte Butte Meadows Comment
  CHSC107567  Juncus laccatus Lowell Ahart 2011-8-19 17641 Butte Along the wet road gutter, on the south side of a good forest road, about 1/2 mile north of the Lost Creed Reservoir Dam, about 4 1/2 miles (air0 north of Clipper Mills. 1266 Comment
  JEPS110158  Juncus laccatus Lowell Ahart 2006-7-16 13012 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  UC1258091  Juncus leiospermus Lowell Ahart 1979-5-29 1895 Butte 2.5 mi se Paradise (on e side of Kunkle Creek, 0.25 mi n of Kunkle Reservoir) 500 Comment
  UC1527280  Juncus leiospermus var. ahartii Lowell Ahart 1986-4-22 5245 Butte about 2.25 mi n and 0.5 mi e Honcut (about 12 mi s of Oroville, Peter Ahart Ranch) 39 Comment
  CHSC93492  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12605 Butte Margins of a vernal pool where there is basalt shelfing, about 1 1/8 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 368 Comment
  JEPS104262  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte High water line of the vernal pool, ca 100 feet w of Hendricks ditch, ca 1 3/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 271 Comment
  JEPS104274  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-8 10040 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. 332 Comment
  JEPS122210  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC64243  Juncus nevadensis S. C. Morey 1983-8-3 692 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC113956  Juncus orthophyllus Lowell Ahart 2014-7-16 19692 Butte Dry northwest part of a large wet meadow (some bog), about 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC49624  Juncus oxymeris Vernon Oswald 1987-5-18 2911 Butte Rancho Bosquejo. East side of the Sacramento River at the w end of Cana Hwy (Feenstra's Riverview Orchard). Along the edge of pool. 48 Comment
  RSA755196  Juncus patens L. Ahart 2009-5-30 15779 Butte About 60-100 yards north of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile W of Highway 32, about 10 miles NE of Chico. 269 Comment
  UCD141879  Juncus phaeocephalus var. paniculatus J. W. Jones 1922-7-1 s.n. Butte Rice Station, Biggs. Comment
  CHSC102621  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC39271  Juncus tenuis Lowell Ahart 1983-7-29 4219 Butte Found along the dirt road, about 2 miles south of Milsap Bar, about 23 miles northeast of Oroville. 750 Comment
  CHSC96884  Juncus tenuis Lowell Ahart 2007-6-12 14081 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
  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
  UCSB63745  Juncus tenuis Ahart, Lowell 1998-6-3 Butte T20N, R4E, NE 1/4 Sec. 17; NW of the cow chute along Cherokee Rd; North Table Mtn; about 7 mi (air) north of Oroville 403 Comment
  CHSC30358  Juncus triformis James D. Jokerst 1980-6-14 830 Butte Big Bald Rock, N of Lake Oroville, E of town of Berry Creek. Comment
  CHSC111633  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands. 830 Comment
  CHSC113274  Juncus trilocularis Lowell Ahart 2014-5-21 19531 Butte Along a small drainage and the poor road, about 100 yards west from Ponderosa Way, about 1/4 mile northwest of the Ponderosa Dam. 271 Comment
  CHSC78214  Juncus trilocularis Lowell Ahart 2000-6-6 8459 Butte In a meadow on the bottom of an old gold mining pit, about 200 yards northwest of where the dirt road crosses Oregon Gulch creek, about 1/4 mile north of the cemetery, about 1 1/2 mile south of Crystal Hill, about 5 miles (air) east of Oroville. 304 Comment
  SD121516  Juncus uncialis Lowell Ahart 1982-5-1 3401 Butte Peter Ahart Ranch, about 2 miles north and I(c) mile east of Honcut, growing on wet bare red soil around the edges of a large vernal pool in one of the farmed fields. Comment
  JEPS113765  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
  CAS-BOT-BC80921  Juniperus californica Arthur Menzies 1969-8-1 s.n. Butte Near Gillem's Bluff, Little Butte Creek, Nelson West Rd & Chico-Butte City Hwy. Comment
  CHSC28873  Juniperus californica M. S. Taylor; J. Jokerst 1980-2-23 2321 Butte Ca. 50 ft nw of Neal Rd, ca. 2 mi e of Hwy 99, ca. 1 mi e of Neal Rd dump, ca. 7 mi s of Chico. 121 Comment
  CHSC45224  Juniperus californica Lowell Ahart 1983-4-10 3922 Butte About 1 1/2 miles north-east of Highway 99 and Pentz Road. 91 Comment
  CDA41422  Keckiella breviflora subsp. breviflora Ball & Raynor May 1945 s.n. Butte Chico. 0 Comment
  CAS-BOT-BC235678  Keckiella breviflora var. glabrisepala Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC237821  Keckiella lemmonii Lowell Ahart 1983-7-24 4209 Butte On the road cutbanks at the Forbestown Res., about 5 miles north-east of Forbestown 450 Comment
  CHSC11817  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville. 1550 Comment
  LA208506  Kelloggia galioides E. B. Copeland; 1930-8-10 Butte Jonesville 1550.0 Comment
  CDA42980  Kickxia elatine L. Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  CHSC10642  Kickxia elatine Lowell Ahart 1969-7-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC113191  Kickxia elatine Lowell Ahart 2013-11-29 19293 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  JEPS103538  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CHSC103754  Koeleria phleoides Lowell Ahart 2010-5-16 16701 Butte About 1/2 mile south of parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  UC204878  Koeleria phleoides A. A. Heller 1914-5-19 11417 Butte Comment
  UCD133503  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. 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-BC340528  Lactuca serriola Lowell Ahart 1987-8-3 5843 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC30655  Lagophylla glandulosa M. S. Taylor 1980-7-5 3058 Butte Ca. 1 mi e of Meridian Rd, ca. 1 1/4 mi ne of its jct with Hwy 299, ca. 8 mi n of Chico. 67 Comment
  CHSC31536  Lagophylla glandulosa L. Ahart 1979-5-20 1879 Butte On bottom of wash. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC38369  Lagophylla glandulosa Vernon Oswald 1983-5-31 586 Butte Upper Bidwell Park, Chico, beside Yahi Trail ca. 300 ft e of Day Camp. 91 Comment
  CAS-BOT-BC341309  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  CHSC46211  Lagurus ovatus Pauleen Broyles 1985-5-14 943 Butte Town of Paradise. Overlooking w branch of North Fork Feather River, in yard of a private home at 5190 Country Club Dr. On e side of the house. 522 Comment
  CAS-BOT-BC337910  Lasthenia californica E. B. Copeland 1899-3-1 s.n. Butte Chico Comment
  CHSC31564  Lasthenia californica L. Ahart 1976-4-11 1056 Butte Vernal pools, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC90989  Lasthenia californica subsp. californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of 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
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Jan 19 2011
  SEINET10475346  Lasthenia chrysostoma Mary Susan Taylor 1975-4-26 Taylor 513 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CDA42855  Lasthenia fremontii L. Ahart 2012-5-2 17963 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. Comment
  JEPS107750  Lasthenia fremontii Lowell Ahart 2005-5-14 11811 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles (air) southeast of Oroville 25 Comment
  UC1363795  Lasthenia fremontii Robert Ornduff 1958-4-19 4908 Butte 2 mi e Chico (on Hwy 32) Comment
  CHSC45688  Lasthenia glaberrima Vernon Oswald 1986-4-28 1985 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. 48 Comment
  CHSC50323  Lathyrus brownii Vernon Oswald; Lowell Ahart 1990-5-29 4264 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CHSC855  Lathyrus jepsonii var. californicus T. Morgue 1932-4-22 Butte Durham-Chico road. 57 Comment
  CHSC65553  Lathyrus nevadensis var. nevadensis L. P. Janeway 1995-6-13 4783 Butte About 0.75 mi east of the western end of Jackson Ranch Ridge; along Road 21N25Y. 1158 Comment
  SEINET5327314  Lathyrus nuttallii R. McKee 1918-4-28 s.n. Butte Appleton Comment
  CAS-BOT-BC213290  Lathyrus sulphureus Clarence R. Quick 1952-6-30 52 -96 Butte Ridge top, Big Bar Mt. east of Pulga, Sierra Nevada Comment
  JEPS117883  Lathyrus tingitanus L. P. Janeway 2008-4-2 9243 Butte Oroville along high flat bank on east side of Feather River between Thermalito Diversion Dam and the Fish Barrier Dam Northern Sierra Nevada Foothills 65 Comment
  CHSC112435  Lavatera cretica Lowell Ahart 2013-5-21 18702 Butte Waste area along fence, on the west side of Highway 99E, 30 yards north of W. Rio Bonito Road, about 1 mile northeast of Biggs. 31 Comment
  JEPS120931  Lavatera cretica Lowell Ahart 2013-5-21 18702 Butte On the W side of Hwy 99E, 30 yards N of the W Rio Bonita Road, about 1 mile NE of Biggs. Comment
  CAS-BOT-BC321779  Layia fremontii H. E. Brown 1897-4-15 184 Butte Near Clear Creek Comment
  CHSC101972  Layia fremontii J. Boze 1982-5-8 437 Butte Along edge of Horseshoe Lake in Upper Bidwell Park, Chico. Comment
  CHSC29007  Layia fremontii M. S. Taylor 1980-3-28 2409 Butte Around vernal pools, just e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1 1/2 mi e of Hwy 99. 76 Comment
  CHSC3264  Layia fremontii M. L. Hellier 1966-3-21 17 Butte Along rd. side about 1/2 mile e. of Hwy. 99 E. on Pentz rd. Comment
  CAS-BOT-BC321761  Layia fremontii C. C., Mrs. Bruce 1897-4-1 1845 Butte Little Chico Plains Comment
  POM284970  Layia fremontii Lyman Benson 1935-3-27 6369 Butte 5 miles NW of Oroville, Sierra Nevada Mt Range, Sacramento river watershed. 152 Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  CHSC21068  Lemna minor M. S. Taylor 1975-10-3 949 Butte Between Sacramento River and River Rd, ca. 10 mi w of Chico. 36 Comment
  SD505  Lemna trisulca E. B. Copeland 1930-7-18 404 Butte Jonesville, local in water in sunny swamp. 1550 Comment
  CHSC35633  Lepidium dictyotum R. E. Preston 1982-4-4 216 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  CHSC102965  Lepidium pinnatifidum Lowell Ahart 2009-7-4 16001 Butte On the south side of the paved road, southeast of parking lot 4, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwet of Gridley. 21 Comment
  CHSC48337  Lepidium pinnatifidum Vernon Oswald 1983-6-28 784 Butte Graylodge Waterfowl Management Area near Parking Lot 16. On roadways in the refuge. Comment
  CHSC77816  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte Around the margins of the lawn on the south side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  JEPS115725  Lepidium pinnatifidum Lowell Ahart 2009-7-4 16001 Butte On the south side of the paved road, southeast of parking lot 4, Gray Lodge Waterfowl Management Area, about 6 miles (air) southwet of Gridley 21 Comment
  CHSC103655  Lepidium strictum Lowell Ahart 2010-4-5 16573 Butte Vacant lot, about 50 feet west of Virginia Street, about 20 feet south of Spruce Street, in Gridley. 28 Comment
  CHSC33170  Lepidium strictum R. E. Preston 1981-5-3 64 Butte At curbside, in front of St. John the Baptist Church, Chestnut St. between 4th and 5th Sts., Chico. 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
  CHSC35641  Lepidium strictum R. E. Preston 1982-4-7 225 Butte At edge of almond orchard; nw corner jct of Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  CHSC38057  Lepidium strictum R. E. Preston 1983-5-26 386 Butte At roadside; at PG and E rest stop near Arch Rock Tunnel, ca. 4 mi NE of Pulga. 475 Comment
  UC1594692  Lepidium strictum Vernon H. Oswald and Lowell Ahart 1992-3-24 4886 Butte near Oroville (at the junction of Burma and Cherokee roads, on w side of Thermalito Diversion Pool, in parking area); Lake Oroville Recreation Area 74 Comment
  SACT001406  Leptochloa fascicularis Herbert Mason 1945-9-19 Butte Stem rooting at nodes from plants in flooded area, northwest of pennington. Comment
  LA35680  Leptochloa fusca subsp. fascicularis H. S. Yates; 1936-8-14 6126 Butte 3 mi NW of Nelson 30 Comment
  POM197253  Leptochloa fusca subsp. fascicularis H. F. Copeland 1923-8-13 1107 Butte Nelson Comment
  JEPS110445  Leptochloa fusca subsp. uninervia Lowell Ahart 2005-12-11 12517 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
  UC600666  Leptodactylon pungens E. B. Copeland July, 1930 Butte above Jonesville (on rocky ridge); above Jonesville 2000 Comment
  CHSC41470  Leptosiphon acicularis Lowell Ahart 1986-4-4 5243 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 82 Comment
  RSA468553  Leptosiphon androsaceus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC36716  Leptosiphon bolanderi R. Schlising; R. Banchero 1980-5-13 3587 Butte Serpentine outcrop above Hwy 70 and above Bardees Bar on N Fork of Feather River, ca 2 mi S of Pulga. 441 Comment
  CHSC1279  Leptosiphon ciliatus V. Holt 1935-5-1 Butte Butte Creek canyon. 106 Comment
  CHSC83714  Leptosiphon ciliatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 460 Butte In vernal pools below the high water mark. Ca 1.0 mi NE of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC2430  Leptosiphon filipes R. Carter 1965-6-17 236 Butte Found ca. 15 mi. NE of Oroville at Bald Rock Dome, 15 yds. E of Bean Creek Rd. on road that goes to the dome. 1051 Comment
  CHSC29819  Leptosiphon parviflorus M. S. Taylor 1980-4-16 2490 Butte Lake Oroville State Recreation Area, ca. 1/2 mi se of Parish Camp just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC3523  Leptosiphon parviflorus John Francis 1966-4-23 128 Butte In pasture, Table Mt. Comment
  CAS-BOT-BC341783  Lessingia nemaclada Lowell Ahart 1983-6-30 4179 Butte About 1 1/2 miles north-east of Concow Res. 550 Comment
  RSA388118  Lessingia virgata J. E. Sowder 1933-6-15 1423 Butte 1 mile west of Tres Vias 46 Comment
  RSA500417  Lessingia virgata Vernon H. Oswald 1989-9-23 4013 Butte Butte Community College, a dry, gravelly slope between Parking Lot C and the Horse Arena 107 Comment
  POM132236  Leucothoe davisiae Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10572648  Lewisia cantelovii Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5521 Butte At Butte-Plumas County line on Hwy 70, on large granitic outcrop. Comment
  CHSC29375  Lewisia nevadensis R. A. Schlising; R. Banchero 1980-6-2 3632 Butte 0.1 mi s of jct Humboldt Rd and Skyway/Humbug Rd at Butte Meadows. 1341 Comment
  UC1609486  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n Honcut (on w side of Dunstone Road, about 12 mi se of Oroville) 60 Comment
  UCR231506  Lilium Anna M. Hurlbutt 2009-8-7 023 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  CHSC115483  Lilium humboldtii subsp. humboldtii L. P. Janeway; Emily Meigs Doe 2015-4-14 11665 Butte Northern High Sierra Nevada. Plumas National Fore ... Field redacted by CHSC, contact the data manager for more information 747 Comment
  CHSC113471  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC30696  Lilium washingtonianum M. S. Taylor; R. Schlising 1980-7-6 3065 Butte Ca. 100 ft w of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  CHSC4681  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  CHSC49660  Lilium washingtonianum subsp. washingtonianum Vernon Oswald 1983-7-6 810 Butte Near Calif. Hwy. 32, 11.7 mi n-e of Forest Ranch. 1158 Comment
  CHSC82290  Limnanthes alba subsp. alba Lowell Ahart 2002-4-24 9528 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC2388  Limnanthes alba subsp. versicolor R. Carter 1965-4-12 178 Butte Found 7.5 mi. E of Oroville, 20 yds. from gate at end of Feathervale on N side of road. 274 Comment
  SEINET12183045  Limnanthes douglasii K. E. Warwick 1978-1 6 Butte ca 20 m N of Skyway (Rd.), .5 km e of intersection of Skyway and Notre Dame Blvd., Chico Comment
  CHSC51887  Limnanthes douglasii subsp. rosea Suzanne Peters 1988-3-15 49 Butte Vicinity Salmon Hole, ca 5 mi E of Chico Municipal Golf Course. 121 Comment
  UC971878  Limnanthes floccosa subsp. californica Charles T. Mason Jr. 1949-4-24 1255 Butte 8 mi nw Oroville (along the Oroville-Chico road, near a large asphalt area marked Bombing Range) Comment
  UC1748336  Limnanthes floccosa subsp. floccosa James D. Jokerst 1988-3-15 3047 Butte ca. 100 m SE of Keefer Road Comment
  CHSC82232  Limosella aquatica Lowell Ahart 2002-4-14 9483 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  SEINET10496796  Linanthus ciliatus Mary Susan Taylor 1982-6-24 Taylor 4740 Butte T23N R4E ne/nw sec 13. Pulga SW quad. Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. Elev ca. 3800 ft. 1158 Comment
  UC133974  Linanthus dichotomus E. B. Copeland 1903-4-11 3030 Butte Chico Comment
  RSA0096836  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte About 2 miles west of Arch Rock Tunnel on the Feather River Highway. Comment
  UC133721  Linanthus filipes Mrs. R. M. Austin Apr 1896 152 Butte e of Chico Comment
  UC1594568  Linanthus harknessii Lowell Ahart 1992-7-29 6887 Butte about 0.75 mi nw Lotts Lake (near Coon Hollow Creek, about 1 mi ne of the Carr Mine) 1798 Comment
  POM219475  Linanthus pungens subsp. pulchriflorus E. B. Copeland 1931-6-22 682 Butte Jonesville; mountain top west of the Summit 2150 Comment
  UC109513  Linum lewisii T. S. Brandegee 1902-6-28 Butte Jonesville Comment
  SEINET12186145  Linum micranthum Unknown 1985-1 5085 Butte about 2.5 mi NE of Forbestown, roadside to the Forbestown Reservoir 869 Comment
  CHSC74726  Lipocarpha aristulata B. Castro 1987-8-25 203 A Butte Lower Butte Creek, on cobble and gravel bars along S edge, ca 0.25 mi E of its crossing under Hwy 99, and 2.1 mi S of the Skyway. 60 Comment
  SEINET13711404  Lipocarpha aristulata Lowell William Ahart, Lowell William Ahart 1999-1 8146 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  UC128928  Listera convallarioides Miss Kate Conger 1907-1 Butte Brush Creek Comment
  POM219176  Listera convallarioides H. F. Copeland 1928-8-21 324 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  CHSC11075  Lithophragma bolanderi Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC2819  Lithophragma bolanderi David Prall 1965-3-14 9 Butte At edge of cliff ca. 30 yds. south of Neal Rd. 1mile East of HW 99E. 106 Comment
  CAS-BOT-BC430883  Lithophragma bolanderi Forest Sheehan 1970-4-7 s.n. Butte Table Mountain, near Oroville. Comment
  CAS-BOT-BC432268  Lithophragma campanulatum A. A. Heller 1915-6-10 11955 Butte Little Summit in the Sierra Nevada 1371 Comment
  SBBG17379  Lithophragma parviflorum M. Vincent 1961-3-28 15 Butte overlooking Butte Crk; Skyway, 4 mi W of Paradise on rd to Chico 609 Comment
  CHSC38675  Lithophragma parviflorum var. trifoliatum Vernon Oswald 1983-3-14 181 Butte Upper Bidwell Park Chico, on the north rim ca. 0.9 mi e of the power lines. 320 Comment
  CAS-BOT-BC428443  Lithophragma trifoliatum Forest Sheehan 1970-4-7 s.n. Butte Table Mt. near Oroville Comment
  CAS-BOT-BC342104  Logfia arizonica Lowell Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC26713  Logfia gallica M. P. Hayes 1978-4-7 152 Butte On top of ne butte on Butte College campus at the corner of Pentz and Clark roads. 170 Comment
  HSC38142  Logfia gallica Thomas W. Nelson, Jane P. Nelson 1976-5-9 2450 Butte At the intersection of Palermo Rd. and S.R. 70 ca. 4 mi. S of Oroville 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
  RSA718953  Lolium perenne subsp. multiflorum L. Ahart 2006-9-28 13382 Butte 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
  CHSC28975  Lomatium dasycarpum subsp. tomentosum J. D. Jokerst 1980-3-12 469 B Butte Ca 1.0 mi E of Chico Municipal Airport. 60 Comment
  CHSC104828  Lomatium dissectum var. multifidum Lowell Ahart 2010-5-7 16632 Butte On the south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) east of Chico. 301 Comment
  CHSC42610  Lomatium dissectum var. multifidum Vernon Oswald 1985-5-13 1757 Butte On the W side of Hwy 32 at Crown Pt. Rd. 597 Comment
  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
  POM78772  Lomatium marginatum C. C. Bruce 1897-05 2049 Butte Iron Canyon. Comment
  CHSC98573  Lomatium marginatum var. marginatum L. P. Janeway; B. Castro 2007-5-6 8970 Butte Northern High Sierra Nevada. Ridge top along a side road north of the road from Sawmill Peak to Flea Valley, 1.8 air km northeast of Sawmill Peak. 969 Comment
  UC1212523  Lomatium nevadense var. parishii E. B. Copeland 1930-6-27 Butte vicinity of Jonesville; Lassen National Forest 1500 Comment
  CHSC25359  Lomatium utriculatum Marc P. Hayes 1977-4-22 7 Butte Ca. 0.8 km sw of Pulga, 120 m n of North Fork of Feather River, along Pulga Rd., ca. 80 m from juncture with Hwy 70. 495 Comment
  CHSC42632  Lomatium utriculatum Vernon Oswald 1986-4-29 1987 Butte Concow Rd. 1.1 mi sw of Ponderosa Way (Rim Rd.). 853 Comment
  CHSC8587  Lomatium utriculatum G. Smalley 1968-3-17 Butte Collected on south side of block faulted Chico Monocline, ca. 1 mile east of Bidwell Park golf club. 106 Comment
  CAS-BOT-BC240450  Lonicera hispidula Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  CHSC115689  Lonicera hispidula Emily Meigs Doe 2015-5-12 28 Butte Northern High Sierra Nevada. Plumas National Forest. About 2.75 mi. (air) NW of Forbestown. Roadside of Rd. 19N19, ap-proximately 750 ft. NE of its junction with Ponderosa Way. 746 Comment
  CHSC194  Lonicera hispidula 1932-7-5 Butte Nunnely and Copeland rds. Paradise, canyon side. 548 Comment
  CHSC97322  Lonicera hispidula L. P. Janeway 2007-6-11 9039 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67 0.6 km northwest of Lumpkin Road, 2.3 km west of Feather Falls town site. 777 Comment
  CHSC61306  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte On the west side of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CAS-BOT-BC200897  Lotus John Thomas Howell 1976-4-1 51523 Butte Table Mountain, 4 to 5 miles north of Oroville Comment
  RSA726811  Lotus argophyllus var. fremontii L. Ahart 2007-5-29 13937 Butte About 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald rock, about 16 miles (air) northeast of Oroville. 586 Comment
  JEPS88599  Lotus corniculatus Vernon H. Oswald and Lowell Ahart 1996-5-27 7671 Butte U.S. Fish and Wildlife Service parcel betw Seven Mile Lane and Sacramento River (in the s paddock of Tract 7, Santuary II, Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  RSA253373  Lotus grandiflorus var. macranthus A. A. Heller 1938-5-28 15125 Butte On the Feather River Highway 25 miles from Oroville. Comment
  RSA303521  Lotus humistratus J. R. Shevock 1972-5-19 1771 Butte Hwy 70, approx 10 mile N of Lake Oroville. 549 Comment
  SEINET10841208  Lotus humistratus Mary Susan Taylor 1981-5-15 Taylor 3734 Butte T22N R5E sw/nw sec 18, Pulga SW quad. N side of Feather River Hwy 70, at Plumas National Forest boundary, ca. 2 mi NE of Jarbo Gap. 2000 ft. 610 Comment
  JEPS103299  Lotus micranthus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  SEINET10451995  Lotus nevadensis Lowell Ahart 1983-5-28 Ahart 4016 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  POM16592  Lotus oblongifolius var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  RSA4646  Lotus oblongifolius var. nevadensis E. B. Copeland 1930-7-11 420 Butte Jonesville. 1500 Comment
  SEINET3694432  Lotus oblongifolius var. torreyi E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  SEINET12161432  Lotus subpinnatus D. G. Bendix 1978-1 12 Butte 50 m s of Lookout Point, 7kmW of Paradise 300 Comment
  RSA594175  Lotus unifoliolatus S. O. Mattoon 1978-9-21 44 Butte Southern Cascade Mtns: Ponderosa Way Forest Road at Middle Fork, Butte Creek, 5 air miles NW of Maglia. 671 Comment
  SD243397  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 PDR 1373328 Butte South-southwest of Richvale. Rice field. Comment
  JEPS113569  Ludwigia palustris Lowell Ahart 2007-7-27 14391 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 51/2 mi (air) W of Oroville 36 Comment
  CDA5220  Ludwigia uruguayensis L. Ahart 2000-7-18 8601 Butte About 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. Comment
  UC725312  Lupinus A. A. Heller 1929-6-21 14896 Butte Cana Comment
  UC726093  Lupinus A. A. Heller 1928-6-28 14671 Butte Butte Meadows Comment
  SEINET10838349  Lupinus Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5388 Butte T23N R3E sec 28? S side of Humbug Rd, 3.1 mi W of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  CHSC929  Lupinus albicaulis L. Nelson 1935-5-25 Butte Humboldt road. 457 Comment
  CHSC96862  Lupinus albicaulis Lowell Ahart 2007-6-3 13979 Butte On the east side of Highway 70, about 1/4 mile northeast of the Poe Dam on the North Fork of the Feather River. 486 Comment
  SEINET10488370  Lupinus albicaulis Mary Susan Taylor 1981-5-14 Taylor 3716 Butte Corolla cream, ages brown, large plant To 3 ft tall. N side of 23n00.2, 2.9 mies sw of merrimac on oroville-quincy Hwy. Assoc.; Agroseris retrorsa, irish hartwegii 975 Comment
  CHSC86544  Lupinus albicaulis var. albicaulis L. P. Janeway; John Hunt, Christine Hantelman 2003-6-26 7860 Butte Northern Sierra Nevada Foothills. Along south edge of South Fork Feather River arm of Lake Oroville, 2.5 km east-southeast of south end of Bidwell Bar bridge. 280 Comment
  CDA38768  Lupinus albifrons var. albifrons L. Ahart 2012-4-2 17895 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  SEINET12154426  Lupinus aridus Unknown 1890-1 s.n. Butte Comment
  SEINET10940039  Lupinus bicolor subsp. pipersmithii Lowell Ahart 1985-4-1 Ahart 4873 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  RSA325881  Lupinus bicolor subsp. tridentatus L. Ahart 1983-6-26 4123 Butte Along Ponderosa Way (Big Ridge Rd), ca. 2 mi. se of the jct with Oroville-Quincy Hwy, ca. 15 mi. ne of Oroville. 500 Comment
  SEINET10452081  Lupinus formosus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4076 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
  JEPS87384  Lupinus grayi Lowell Ahart 1993-6-26 7023 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge); , w of the Lost Creek Reservoir 1188 Comment
  POM23941  Lupinus grayi C. C. Bruce 1898-05 2456 Butte Doe mill Comment
  UC726774  Lupinus nanus A. A. Heller 1938-4-23 15046 Butte along the Feather River Highway near the bridge over the <Feather> River e Oroville; along the Feather River Highway nr bridge over river Comment
  CHSC25057  Lupinus nanus var. apricus Mark Johnson 1974-5-1 22 Butte 1/2 mile s of Butte Creek, 1 mi se of Covered Bridge and Honey Run Road, 10 mi se of Chico. 228 Comment
  CHSC55704  Lupinus nanus var. vallicola Steven Triano 1988-4-17 65 Butte Along e side of Hwy. 32 ca 6.5 mi n of Forest Ranch. 984 Comment
  JEPS124190  Lupinus pachylobus Lowell Ahart 2015-3-24 19960 Butte Upper Bidwell Park, about 5 miles (air) northeast of Chico. Comment
  CHSC33125  Lupinus polycarpus J. D. Jokerst 1981-4-10 1291 Butte Top of North Table Mt., ca 300 m N of Cherokee Rd at the W edge of the mountain. 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
  CHSC113381  Luzula comosa var. laxa Lowell Ahart 2014-7-2 19540 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  CHSC101169  Luzula macrantha Lowell Ahart 2009-5-15 15711 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC116997  Luzula macrantha Lowell Ahart 2016-6-4 20927 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC76150  Luzula macrantha G. F. Hrusa 1997-4-30 13696 Butte Sierra Nevada. Serpentine outcrop on Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. 760 Comment
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Jun 21 2007
  CHSC96801  Luzula macrantha Lowell Ahart 2007-4-30 13705 Butte On the west side of Jordan Hill Road, about 1 1/2 miles northwest of Concow Creek, about 1 1/2 miles west of Concow Reservoir. 358 Comment
  JEPS120131  Luzula subsessilis Lowell Ahart 2012-5-12 18031 Butte On the sides of South Rim Trail, about 1/2 mile southwest of the old homestead, about 5/8 mile west of Highway 32, south part of Upper Bidwell Park, about 8 1/2 miles (air) northeast of Chico. Comment
  JEPS114701  Lychnis coronaria Lowell Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, about 400 yds SW of the cemetery, about 10 mi (air) NE of Oroville 305 Comment
  SFV1209  Lychnis coronaria M. L. Vincent 1963-6-10 412 Butte Kunkel Reservoir. 4 miles south of Paradise. 0.5 miles off Pentz Road. 450 Comment
  SBBG128085  Lychnis coronaria L. Ahart 2008-6-13 14826 Butte banks of Oregon Gulch, bottom of an old gold mined area, ca. 400 yards SW of the cemetery, ca. 10 mi NE of Oroville 305 Comment
  CHSC109786  Lycopus americanus Lowell Ahart 2012-10-20 18511 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC37380  Lycopus americanus R. A. Schlising 1980-8-3 3963 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  JEPS94765  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 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
  CHSC105263  Lythrum hyssopifolia Lowell Ahart 2010-6-20 16830 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
  CHSC75999  Lythrum hyssopifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8169 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC1191546  Lythrum hyssopifolia Herbert L. Mason, Verne Grant 1946-8-6 12973 Butte 2.7 mi n of colusa (between Sacramento River and Butte Creek, Butte Sink); Butte Sink Comment
  UC204403  Lythrum hyssopifolia A. A. Heller 1914-5-30 11471 Butte 6 mi nw of Chico (Sacramento Valley); Sacramento Valley Comment
  CDA18880  Lythrum salicaria Riley, Villegas 2000-5-24 PDR 1170754 Butte Vicinity of Wyman Ravine, on the westside and eastside of Lincoln Blvd. 0 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
  SFV4039  Madia citriodora M. L. Vincent 1960-9-8 91 Butte Sierra Nevada On bluff overlooking Butte Creek Canyon on the road (Skyway) to Chico from Paradise. 215 Comment
  UCD134232  Madia elegans M. Vincent 1963-6-6 370 Butte Nelson Bar Road at PGE. Comment
  CHSC36840  Madia elegans subsp. elegans M. S. Taylor 1982-6-24 4732 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC30038  Madia exigua L. Ahart 1980-5-17 2307 Butte A little east of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  JEPS108732  Madia exigua Lowell Ahart 2006-6-9 12650 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  CHSC111981  Madia gracilis Lowell Ahart 2012-6-2 18129 Butte Along sides of Truex Rd., w. of intersection of Truex Rd. and Trevor Rd., about 1/8 mi. nw of West Branch Bridge across dLake Oroville.. 286 Comment
  CHSC48179  Madia gracilis Vernon Oswald 1985-5-28 1787 Butte Oroville-Quincy Hwy at the first pull-out on the e side of the road 0.8 mi n of Bidwell Bar Bridge. 320 Comment
  CHSC78235  Madia gracilis Lowell Ahart 2000-6-29 8543 Butte On the west side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  JEPS104130  Madia gracilis Lowell Ahart 2003-6-30 10323 -A Butte Near the small stream, on the se side of Ponderosa Way, ca 2 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 578 Comment
  JEPS115868  Madia gracilis Lowell Ahart 2009-5-23 15722 Butte On the north 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
  RSA755648  Madia gracilis L. Ahart 2009-5-23 15722 Butte North side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  SD5628  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  CHSC33945  Maianthemum racemosum M. S. Taylor 1981-5-21 3783 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Hwy 70. 1005 Comment
  CAS-BOT-BC347379  Malacothrix floccifera John Thomas Howell 1955-6-15 30510 Butte West Branch of North Fork of Feather River 182 Comment
  SEINET10904853  Malacothrix floccifera Mary Susan Taylor 1979-8-4 Taylor 2183 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
  CHSC66080  Malva parviflora Vernon H. Oswald 1996-5-23 7637 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee between Tract 7.3 and Tract 10.2, Sanctuary I. 33 Comment
  CHSC3511  Marah fabacea var. agrestis M. Gregg 1966-2-28 23 Butte In Upper Bidwell Park at Salmon Hole. Comment
  SEINET10448099  Marah watsonii Mary Susan Taylor 1980-4-18 Taylor 2525 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CDA31968  Marrubium vulgare L. Ahart 2009-6-12 15845 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. Comment
  CHSC101809  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS115503  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC58864  Marsilea oligospora Lowell Ahart 1992-7-21 6793 Butte On the bottom of a snow lake, Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  CHSC97255  Marsilea vestita subsp. vestita Lowell Ahart 2007-8-19 14483 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC348266  Matricaria occidentalis Lowell Ahart 1982-4-29 3392 Butte A little west of the sign in station, Gray Lodge, about 12 miles south-west of Gridley 35 Comment
  CHSC29116  Meconella californica M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2459 Butte On s side of Swedes Flat Rd, ca. 1 mi e of its jct with Oroville-Bangor Hwy, ca. 10 mi se of Oroville. 335 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
  SEINET12091625  Meconella californica S. E. Bigbee 1984-1 37 Butte Ca 50 yds S of Butte Creek and ca 350 yds W of Covered Bridge, 6.2 mi ESE of Chico 121 Comment
  SEINET12155167  Medicago hispida P. L. Ricker 1912-1 3949 Butte Chico Comment
  CHSC31800  Medicago polymorpha L. Ahart 1976-5-2 1090 Butte Peter Ahart Ranch, Honcut. On grassy bank of North Honcut Creek. 45 Comment
  JEPS115844  Medicago polymorpha Lowell Ahart 2009-4-22 15576 Butte West side of Guardians Trail, along the small drainage just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC90815  Medicago praecox Lowell Ahart 2005-5-2 11779 A Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  RSA712795  Melica aristata L. P. Janeway 2005-6-26 8440 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC56830  Melica californica J. D. Prouty 1980-4-17 80 .68 Butte Woodland off of Yankee Hill Road. 518 Comment
  UC1609010  Melica geyeri Lowell Ahart 1993-6-26 7031 Butte about 1 air mi nw Lost Creek Reservoir Dam (Jackass Flat); Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC109843  Melica harfordii L. P. Janeway 2012-6-27 10914 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 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
  UCR115089  Melica subulata G. Fred Hrusa, T. D. Wilfred 1996-7-9 13141 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC262500  Melica torreyana Lowell Ahart 1979-5-29 s.n. Butte 2 1/2 mi se of Paradise 500 Comment
  UCD89081  Melica torreyana A. A. Heller 1915-4-20 11859 Butte Butte County. 7 miles below Cenerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  UC204542  Melilotus albus A. A. Heller 1914-7-11 11563 Butte along river w Chico; Sacramento River Comment
  JEPS102339  Melilotus officinalis Lowell Ahart 2001-6-1 8747 Butte 8 mi W of Biggs (S side of Biggs - Princeton road, about 1/2 mi E of Butte Creek) 21 Comment
  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
  JEPS110460  Mentha canadensis Lowell Ahart 2006-9-11 13285 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-BC428761  Micranthes californica A. A. Heller 1919-3-25 13098 Butte Canon [Canyon] of Chico Creek Comment
  CHSC1673  Micranthes californica R. Carter 1964-3-28 70 Butte 8 mi. E of Oroville at 6110 Woodleaf St. Rt. ca. 10 yds. W of entrance to driveway. 121 Comment
  CHSC39241  Micranthes californica M. S. Taylor; K. Tharp 1983-3-12 5235 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC7051  Micranthes integrifolia J. G. Moore 1969-2-25 112 Butte In Upper Bidwell Park 200 yds. w of rifle range and 100 yds. n of golf course entrance. 67 Comment
  CHSC33350  Micropus californicus var. californicus R. M. Winchell 1980-4-17 3 Butte Covered Bridge along Little Butte Creek. Comment
  CHSC33909  Micropus californicus var. californicus M. S. Taylor 1981-5-21 3775 Butte S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 853 Comment
  CHSC1290  Microsteris gracilis P. Delaplane 1965-5-11 62 Butte 3-4 mi W of Paradise on Skyway. Ca. 1/2 way to Paradise from Chico. 243 Comment
  CHSC20384  Mimetanthe pilosa L. M. Mayer 1975-6-21 400 Butte Growing beside the Sacramento River below Ord Ferry Bridge. Comment
  CHSC66444  Mimetanthe pilosa Vernon H. Oswald 1996-6-10 7741 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 28 Comment
  UCR190687  Mimulus 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
  CDA41666  Mimulus bifidus subsp. bifidus J. R. Keck Jr. 1978-5-23 PDR# 330031 Butte Highway 70, Jarboe Gap. Near Poe Power House. 0 Comment
  SEINET12334058  Mimulus douglasii S. C. Joslin 1978-1 10 Butte ca 6 mi NE of Oroville on Table Mountain 457 Comment
  JEPS115821  Mimulus glaucescens Lowell Ahart 2009-4-26 15644 Butte In a wet drainage, on the west side of Guardians Trail, about 300 yards southwest of Pine Trail, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  RSA189359  Mimulus glaucescens L. S. Rose 1967-5-8 s.n. Butte 1 mile south of Pulga, North Fork, Feather River 427 Comment
  UC1303145  Mimulus glaucescens A. A. Heller 1926-4-26 13932 Butte about 5 mi from Paradise (near the Neale grade) Comment
  RSA0119046  Mimulus guttatus Lowell Ahart 2014-7-7 19588 Butte East side of the dirt road and in the gutter, about 1/2 mile (air) north of Philbrook Reservoir. 1745 Comment
  RSA589914  Mimulus guttatus Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7206 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. N side Beatson Hollow, ca. 1.9 mi. along trail from entrance on Cherokee Rd. Comment
  SEINET8256543  Mimulus guttatus A. A. Heller 1914-3-18 11200 Butte low hills 8 miles north of Oroville. Comment
  RSA256661  Mimulus kelloggii Dave Knorr 1974-4-20 137 Butte On Oroville's Table Mtn, near Cherokee Rd. Comment
  SEINET10570236  Mimulus kelloggii Mary Susan Taylor 1980-4-27 Taylor 2552 Butte T23N R3E west center border sec 26. Paradise quad. On N side of Ponderosa Way Road, ca. 0.5 mi E of Nimshew Rd, ca. 1 mi S of Nimshew; in open vernally dry embankment. With J.D. Jokerst. 610 Comment
  JEPS87142  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  UCD96009  Mimulus microphyllus Dena Grossenbacher; Brian Green 2008-4-8 759 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  CHSC11897  Mimulus moschatus E. B. Copeland 1929-7-13 463 Butte Jonesville. This very viscid small form is known only in the mountains of Butte and Plumas counties. 1550 Comment
  CHSC44793  Mimulus moschatus R. Banchero 1980-6-19 254 Butte Along Concow Rd 1.3 mi N of its jct with Hwy 70, 0.3 mi N of the town of Concow. 518 Comment
  SEINET10863351  Mimulus moschatus Mary Susan Taylor 1975-8-31 Taylor 881 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
  JEPS95876  Mimulus pilosus Lowell Ahart 1999-8-13 8133 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
  SBBG28815  Mimulus primuloides E. B. Copeland 1929-7-13 459 Butte Jonesville Comment
  POM5163  Mimulus tricolor A. A. Heller, H. E. Brown 1902-5-15 5554 Butte Near Biggs. From type locality. Comment
  UC336556  Mimulus tricolor Edw. L. Greene June 1890 Butte Chico Comment
  UCSC008665  Minuartia californica Randall Morgan 2008-4-1 4841 Butte Ahart Ranch Comment
  JEPS117713  Minuartia cismontana Lowell Ahart 2010-4-30 16602 Butte Open are along a ridge, on both sides 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
  CHSC31386  Minuartia douglasii J. D. Jokerst 1979-4-13 1194 Butte Top of North Table Mt., ca 200 meters N of Cherokee Rd where it intersects the E edge of the mountain. 396 Comment
  CHSC13711  Mollugo verticillata M. S. Taylor 1974-10-11 331 Butte On rocky sand bar on Sacramento River, ca. 1/4 mi n of washout, on River Rd, ca. 10 mi w of Chico. Comment
  JEPS115056  Mollugo verticillata Lowell Ahart 2007-11-3 14569 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
  JEPS120585  Mollugo verticillata Lowell Ahart 2013-11-18 19271 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  SEINET6645727  Mollugo verticillata R. R. Halse 2006-8-2 6979 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  SEINET13948592 Image available Monardella lanceolata A. A. Heller 1914-1 11628 Butte Near Forest Ranch; 2400 ft alt. 732 Comment
  SEINET10836960  Monardella odoratissima subsp. pallida Mary Susan Taylor 1978-7-18 Taylor 1685 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC67981  Monardella sheltonii James D. Jokerst 1989-7-3 3124 Butte Hwy. 70 and Pulga Rd. Comment
  RSA754450  Monardella sheltonii L. Ahart 2009-6-3 15822 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC31126  Monardella villosa subsp. villosa L. Ahart 1980-7-4 2453 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  JEPS104298  Monardella villosa subsp. villosa Lowell Ahart 2003-6-30 10332 Butte Near the water pipe where it comes out of the mountain, on the n side of the Ponderosa Reservoir, ca 2 mi (air) north of Forbestown. 481 Comment
  UC1093944  Monardella villosa subsp. villosa Lewis S. Rose 1955-6-15 55105 Butte 6 mi SE of Paradise on Pentz Road 426 Comment
  CHSC57135  Montia chamissoi L. P. Janeway; R. A. Schlising 1988-7-22 3055 Butte Upper Coon Hollow; just below the saddle between Coon Hollow and Chips Creek. 1920 Comment
  CAS-BOT-BC444796  Montia diffusa Javier Penalosa 1962-6-18 2453 Butte Near confluence of French and Peavine Crks. 609 Comment
  CAS-BOT-BC444884  Montia fontana Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  JEPS124215  Montia fontana Lowell Ahart 2015-2-26 19939 Butte About 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. Comment
  CHSC32764  Montia fontana subsp. amporitana J. D. Jokerst 1981-3-29 1272 Butte Top of North Table Mt, ca 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC101654  Montia fontana subsp. chondrosperma Lowell Ahart 2009-4-26 15643 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 5/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road. On the west side of Guardians Trail, about 300 yards southwest of Pine Trail, in a wet drainage. 381 Comment
  CHSC28633  Montia fontana subsp. chondrosperma M. S. Taylor 1979-3-31 1965 Butte In very wet ditch. 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
  CHSC39886  Montia fontana subsp. chondrosperma M. S. Taylor; L. Ahart, J. Jokerst 1984-4-6 5405 Butte Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC34698  Montia parvifolia M. S. Taylor 1981-5-12 3692 Butte Jct of French Creek and 22N93, ca. 3.5 mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 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
  SEINET10929036  Montia perfoliata Mary Susan Taylor 1975-3-10 Taylor 380 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC117749  Morus alba Lowell Ahart 2016-10-25 21374 Butte On the west side of a ditch, about 50 yards south of the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC47621  Muhlenbergia filiformis Lowell Ahart 1984-7-19 4732 Butte Along the edge of the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. 1371 Comment
  UCD86606  Muhlenbergia filiformis H. F. Copeland 1929-6-9 s.n. Butte Jonesville. Comment
  UC1563262  Muhlenbergia mexicana unknown 1990-9-30 6610 Butte 1/8 mi ne Canyon Creek Bridge across Lake Oroville (creek bottom below high water line of lake); East Fork of Canyon Creek 243 Comment
  CHSC34054  Muhlenbergia richardsonis L. Ahart; M. S. Taylor 1981-8-15 3040 Butte On bottom of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC86110  Myosotis discolor L. P. Janeway; John Hunt 2003-4-22 7762 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
  CHSC54344  Myosurus minimus subsp. apus Lowell Ahart 1991-5-20 6656 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  UC1609490  Myriophyllum aquaticum Lowell Ahart 1993-10-31 7271 Butte ca. 4 mi. e. Palermo (on n. side of Grubbs Rd.) 152 Comment
  UC1100017  Najas graminea Verne Grant and Herbert L. Mason 1946-8-15 13047 Butte Greylodge Game Refuge, near caretaker's house Greylodge Game Refuge. Comment
  CDA882  Najas graminea T. C. Fuller 1977-9-7 20222 Butte In ditch bottom in very slow moving water 0.5 m deep, N road of Hamilton Road Facility, Biggs Rice Exp. Station, 5 km N of Biggs. 0 Comment
  CHSC27228  Nandina domestica P. Moyer 1971-11-7 56 Butte CSUC campus. Front of Admin. Bldg., w side of door entrance. 60 Comment
  CAS-BOT-BC260095  Nassella pulchra Lowell Ahart 1977-5-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC60372  Nasturtium officinale E. B. Copeland 1929-7-15 368 Butte Jonesville. 1500 Comment
  CHSC45350  Navarretia capillaris Vernon Oswald; Lowell Ahart 1987-7-1 3049 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  JEPS124021  Navarretia divaricata subsp. divaricata Lowell Ahart 2015-6-16 20237 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  CHSC44334  Navarretia divaricata subsp. vividior Lowell Ahart 1979-5-29 1906 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC45426  Navarretia divaricata subsp. vividior Lowell Ahart 1984-7-19 4729 Butte Along the edge of the dirt road where there is a seep, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  CHSC108178  Navarretia filicaulis L. P. Janeway 2011-8-17 10660 Butte Northern High Sierra Nevada. Plumas National Forest; top of Bloomer Hill. In areas where mixed conifer forest has been greatly thinned and the resulting understory shrubs have been cleared several years ago. Especially along edges of dirt road, but also scattered into the cleared area. 912 Comment
  CHSC30951  Navarretia filicaulis L. Ahart 1980-7-4 2454 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC45719  Navarretia filicaulis K. R. Stern 1979-6-29 Butte Parkhill, 1.5 mi S of Jarbo Gap; Jas. Moak property. 585 Comment
  RSA755415  Navarretia filicaulis L. Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 air mile southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell park, about 10 miles northeast of Chico. 399 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
  JEPS104076  Navarretia heterandra Lowell Ahart 2003-6-18 10290 Butte About 150 yd w of the dredge piles along North Honcut Creek, ca 2 1/2 mi n and 2 1/2 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  RSA717294  Navarretia heterandra L. Ahart 2005-5-28 11823 Butte On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  CHSC25158  Navarretia leptalea D. Joley 1968-7-8 Butte 3/4 mi e of Lomo on Butte Meadows Road ca. 35 mi ne of Chico. Comment
  CHSC91112  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11826 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  UCD33121  Navarretia nigelliformis subsp. nigelliformis Beecher Crampton 1966-6-27 7768 Butte Butte County, ca. 13 miles N.W. of central Chico (indirect line) about 1 mile east of Hwy. 99, Roney Ranch. Comment
  CAS-BOT-BC230474  Navarretia nigelliformis var. nigelliformis A. A. Heller 1914-5-14 11402 Butte 8 miles N of Oroville Comment
  CHSC81287  Navarretia tagetina J. Trizzino 2001-4-25 57 Butte Oro-Chico Highway, 0.5 mi east of Mesa Drive, south side of road. 53 Comment
  CHSC39329  Navarretia viscidula subsp. purpurea Lowell Ahart 1983-6-26 4133 Butte Found along the edge of Ponderosa Way, about 1/2 mile west of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC118892  Nemacladus capillaris R. A. Schlising 1980-7-7 3857 Butte E of Feather Falls in E part of county at Lumpkin Ridge, along Lumpkin/La Porte Road. 1280 Comment
  SEINET10461216  Nemacladus interior Lowell Ahart 1984-6-8 Ahart 4669 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC107252  Nemophila heterophylla H. E. Brown Mar 3 1897-Mar 22 1897 261 Butte near Clear Creek; near Clear Creek 53 Comment
  UC726899  Nemophila heterophylla A. A. Heller 1937-5-31 Butte Yankee Hill Comment
  CHSC76944  Nemophila menziesii var. menziesii Ida Ryan 1893-4-1 Butte Rancho Chico. Comment
  JEPS107354  Nemophila menziesii var. menziesii Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11677 Butte Big Chico Creek Ecological Reserve. On the east side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  SBBG64789  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Crk Comment
  UC398702  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Creek; near Clear Creek Comment
  CHSC95152  Nemophila spatulata R. D. Fischer 2005-6-5 828 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and c. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Along eastern edge of Chico Meadow. 1280 Comment
  POM199585  Nemophila spatulata H. F. Copeland 1932-6-29 s.n. Butte Jonesville. Above meadow by Butte Creek. Comment
  UC1562311  Nothocalais alpestris Vernon Oswald and Lowell Ahart 1990-7-19 4377 Butte ca 3 mi e Philbrook Reservoir (ca 0.1 mi w of the Plumas County Line); s side of Philbrook Creek Comment
  UC600689  Nuphar lutea subsp. polysepala H. F. Copeland Butte Jonesville 1828 Comment
  UC985680  Nuphar lutea subsp. polysepala Herbert L. Mason, Verne Grant 1946-8-14 13029 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Butte Sink; , Sacramento Outing Club Comment
  UCD137747  Nymphaea odorata G. Douglas Barbe 1975-6-4 2030 Butte between Nelson West Road and Pacific Gas and Electric reservoir, 1/4 mile east of Chico/Butte City Highway. Comment
  CHSC25278  Ocimum basilicum K. R. Stern 1977-6-25 Butte Grown in a garden in Chico. Comment
  UC725394  Odontostomum hartwegii A. A. Heller 1938-5-22 15108 a Butte slope near Chico airport (in elevated region above alluvial valley proper) Comment
  UCD80433  Odontostomum hartwegii CNPS SN Foothill Team 2005-5-4 SNFN 0199 a Butte City of Chico, Bidwell Ranch property, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  CHSC108994  Olea europaea Lowell Ahart 2012-4-30 17940 Butte On east side 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. 256 Comment
  SEINET12164650  Onobrychis viciifolia M. S. Taylor 1981-1 3799 Butte T23N R5E sw1/4Sw1/4 Sec 29. Pulga Quad. N of Flea Valley Crk drainage + Pulga, ca5airmiE of Magalia 1067 Comment
  CHSC68240  Ophioglossum californicum Lowell Ahart 1997-1-30 7712 Butte About 3/4 mile east of Dunstone Road, about 3 miles (air) northeast of Honcut, about 12 miles (air) southeast of Oroville. 91 Comment
  CHSC30397  Oreostemma alpigenum var. andersonii Diane H. Ikeda 1979-9-2 160 Butte Ca. 8.1 mi NE of junction of Humboldt Rd and Hwy 32 on Humboldt Rd at crossing of Butte Crk. 1463 Comment
  UC426981  Oreostemma alpigenum var. andersonii E. B. Copeland 1930-7-26 486 Butte Jonesville 1550 Comment
  CHSC25281  Origanum majorana K. R. Stern 1977-6-25 Butte Comment
  UC600432  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, W of Willow Creek. Comment
  JEPS121994  Orthilia secunda Lowell Ahart 2014-7-13 19650 Butte About 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10549647  Orthocarpus attenuatus Mary Susan Taylor 1975-4-26 Taylor 506 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  RSA176419  Orthocarpus campestris A. A. Heller 1927-4-25 14349 Butte Near the 'Y' along the state highway between Oroville and Richvale. This station is not many miles from where Hartweg collected the type. Comment
  RSA32030  Orthocarpus campestris A. A. Heller 1940-4-20 s.n. Butte About 1 mile south of the Oroville Y. This station is very near the place where Hartweg got the type, 'in pascuis vallis Sacramento.' Comment
  RSA20870  Orthocarpus erianthus Carl B. Wolf 1937-3-29 8331 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd. 58 Comment
  RSA523836  Orthocarpus erianthus Gordon H. True Jr. 1936-3-26 375 Butte Gray Lodge Refuge. 23 Comment
  SEINET10931220  Orthocarpus hispidus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4044 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CAS-BOT-BC254365  Oryza sativa G. P. Rixford 1914-9-4 s.n. Butte Biggs Comment
  CHSC54296  Osmorhiza brachypoda Vernon H. Oswald; Lowell Ahart 1991-6-5 4651 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 762 Comment
  JEPS104471  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, ca 100 yd south of the Feather River, on the w side of the dirt road in the Oroville Wildlife Area, ca 3/5 of a mi w of Pacific Heights Rd, ca 5 1/2 mi (air) sw of Oroville. 39 Comment
  HSC92457  Oxalis laxa L. Ahart 1975-5-12 766 Butte Along N Honcut Creek, Peter Ahart Ranch, ca. 1 mi. N and 2.5 mi. E of Honcut, ca. 12 mi. S of Oroville 43 Comment
  CHSC41310  Oxypolis occidentalis S. C. Morey 1983-7-22 546 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC253697  Panicum capillare Lowell Ahart 1982-10-15 3890 Butte Bottom of North Honcut Creek, about 1 mile N and 2.75 miles E of Honcut 50 Comment
  JEPS76249  Panicum capillare W. L. Jepson 1939-8-17 19461 Butte Feather River near Oroville; Feather River 45 Comment
  RSA726556  Panicum capillare L. Ahart 2007-10-31 14513 Butte Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 225 Comment
  UCD89528  Panicum capillare E. M. Johnston 1915-1 W- 143 J Butte Biggs. Comment
  SEINET10507745  Panicum capillare Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4239 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CAS-BOT-BC253831  Panicum dichotomiflorum Beecher Crampton 1957-9-17 4627 Butte Biggs Rice Experiment Station, 5 miles NW of Biggs Comment
  CHSC94761  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  JEPS105999  Paronychia ahartii Lowell Ahart 2004-4-4 10709 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito. Comment
  UC925410  Parvisedum pumilum A. A. Heller 1938-4-22 15042 Butte about 9 mi n of Chico (along U.S. Highway #99E, in hills about Chico); U.S. Highway #99E 60 Comment
  SEINET10449695  Parvisedum pumilum Lowell Ahart 1983-4-10 Ahart 3932 Butte Sides and bottoms of small vernal pools, near the steel power line, ca. 0.5 mi ne of jct of Hwy 99 & Pentz Rd, ca. l6 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC28426  Paspalum dilatatum M. S. Taylor 1979-9-28 2199 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CAS-BOT-BC258768  Paspalum urvillei Lowell Ahart 1987-10-16 5912 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake 609 Comment
  CDA2123  Paspalum urvillei G. D. Barbe, T. C. Fuller 1981-10-9 3593 Butte Frontage of 9478 Black Bart Road, 1.3 miles east of Forbestown Road, Hurleton. Comment
  CHSC62445  Paxistima myrsinites B. Castro; L. Janeway 1991-2-17 440 Butte Ca 6 air mi NW of Stirling City at Ewalt Camp, on NW-facing slopes E of W Branch Butte Creek and just W of Carpenter Ridge. Note: Sec 34 given for orientation since no sections are shown on quad map for this vicinity. 944 Comment
  CHSC48900  Pectiantia pentandra Vernon Oswald; Lowell Ahart 1987-7-1 3087 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte- Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  UCD103456  Pectiantia pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC61206  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte Oroville Wildlife Area, south of the Feather River, about 3 1/2 miles (air) south of Thermalito. 36 Comment
  SD4769  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville, grassy swamps 1550 Comment
  UC426966  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville 1550 Comment
  CHSC2489  Pedicularis densiflora W. Fitzwater 1958-3-19 Butte Forest Ranch area ca. 15 mi. NE of Chico. Comment
  CHSC9267  Pedicularis densiflora D. C. Burns 2002-3-20 103 Butte Ca. .4 mi e of the intersection of Cohasset rd. and Vilas rd., growing 10 yds, n side of Vilas rd. 381 Comment
  CHSC38248  Pellaea andromedifolia Vernon Oswald 1982-7-23 33 Butte Bidwell Park, Chico, on the s side of Upper Park Rd. 4.4 mi e of its junction with Wildwood Ave. (at Parking area R). 231 Comment
  UC1481794  Pellaea brachyptera H. M. Hall July 1914 9807 Butte near Jonesville (ridges n of) 1737 Comment
  CAS-BOT-BC67552  Pellaea mucronata Lowell Ahart 1979-4-6 s.n. Butte 3 mi. nw of Bangor, along the west side of North Honcut Creek. 100 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
  SEINET10529811  Pellaea mucronata Mary Susan Taylor 1981-4-5 Taylor 3482 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  SEINET194311  Penstemon azureus A. A. Heller 1938-5-28 15117 Butte 23 miles o\\from Oroville on the Feather River Highway in Arid Transition Zone. Comment
  CHSC114681  Penstemon azureus J. R. Keck Jr. 1978-5-23 Butte Roadside, Highway 70, Jarboe Gap. 'Near Poe Power House'. Comment
  CHSC27979  Penstemon gracilentus M. S. Taylor 1978-7-18 1703 Butte On top of Humboldt Peak at Humboldt Summit. 2158 Comment
  CHSC1869  Penstemon laetus var. leptosepalus E. Walker 1932-6-13 Butte Magalia. 731 Comment
  CHSC44698  Penstemon laetus var. leptosepalus R. Banchero 1980-6-17 228 Butte Along Bald Rock Rd, 0.2 mi E of its jct with Zink Rd, 4.6 mi E of its jct with Hwy 162. 731 Comment
  CHSC44713  Penstemon laetus var. leptosepalus R. Banchero 1980-6-26 264 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32. 1219 Comment
  CHSC62789  Penstemon laetus var. leptosepalus L. P. Janeway 1993-6-3 4369 Butte Plumas National Forest. South end of Swayne Hill, along the road to Big Bar Mtn (23N28). 731 Comment
  JEPS118483  Penstemon laetus var. leptosepalus Lowell Ahart 2011-7-9 17570 Butte Along a small wash, southwest edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  RSA109280  Penstemon laetus var. leptosepalus E. B. Copeland 1929-7-14 455 Butte Jonesville. 1550 Comment
  CAS-BOT-BC71563  Pentagramma pallida Lowell Ahart 1984-2-3 4494 Butte about 1/4 mile south of Cox Lane, east of the pole line tower, about 3 1/2 miles northeast of Honcut 100 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
  CHSC30083  Pentagramma triangularis subsp. semipallida M. S. Taylor; J. D. Jokerst, L. Ahart, R. Schlising 1980-7-20 3190 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC32690  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-3-24 3439 Butte On s side of Hwy 70 just e of Heinz Creek, ca. 1 mi e of Pulga. 487 Comment
  UC1549532  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte ca. 2-3 mi ne of Pulga (along Four Trees Rd, ca. 0.5 to 1 mi e of Hwy 70); Pulga SW Quadrangle 670 Comment
  UC1390031  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-18 5993 Butte 2 mi s Berry Creek Comment
  POM82580  Perideridia kelloggii C. C. Bruce 1897-06 2046 Butte Little Chico Comment
  SEINET10454549  Perideridia lemmonii Mary Susan Taylor 1977-8-17 Taylor 1467 Butte In Montane Meadows around Julie<s Creek between Old Humboldt Road and Butte Creek, ca. 3.4 mi E of where Butte Creek crosses Humboldt Road near Butte Meadows. 1341 Comment
  CHSC33964  Perideridia parishii subsp. latifolia M. S. Taylor; L. Ahart 1981-8-16 4204 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC66166  Persicaria amphibia Vernon H. Oswald; Lowell Ahart 1996-5-27 7672 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U. S. Fish and Wildlife parcel between 7 Mile Lane and the Sacramento River. Large colonies in a ditch between Seven Mile Lane and Tract 6, Santuary II, just N of the equipment parking lot. 32 Comment
  CAS-BOT-BC413700  Persicaria hydropiper John Thomas Howell 1961-9-22 36770 Butte North Fork of Feather River, 10 miles from Oroville Comment
  CHSC34207  Persicaria lapathifolia J. D. Jokerst; L. Ahart 1981-9-26 1479 Butte Chico River State Park (Chico Landing) at the E bank Sacramento River ca 5 mi W of Chico. Locally abundant on dry sand bars. 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
  CDA42931  Persicaria punctata L. Ahart 2012-9-28 18466 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. Comment
  CDA42947  Persicaria punctata L. 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
  CHSC39113  Phacelia heterophylla subsp. virgata R. A. Schlising 1984-5-24 4454 Butte Bear Ranch Falls NE of Pulga, off Feather River Canyon. 609 Comment
  SD122566  Phacelia imbricata Lowell Ahart, Peter Ahart 1984-5-28 4654 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2.0 miles east of Old Yankede Hill, ca. 16 miles northeast of Oroville. 449 Comment
  UC1046983  Phacelia imbricata Butte just below Los Plumas road junction with the Feather River Highway, about 14 miles northeast of Oroville Comment
  CHSC39102  Phacelia mutabilis R. A. Schlising 1981-7-3 4128 Butte N part of county, E of Philbrook Reservoir. 1828 Comment
  CHSC93982  Phacelia mutabilis R. D. Fischer 2004-6-20 769 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Plants collected off a dirt road running on the east side and parallel to Chico Meadows, YPF at north end of Camp Lassen. 1371 Comment
  UC196300  Phacelia purpusii A. A. Heller 1914-6-22 11486 Butte edge of n slope Little Summit 1463 Comment
  POM73731  Phacelia ramosissima var. ramosissima C. C. Bruce 1897-06 1981 Butte Big Chico Comment
  UC1609370  Phacelia vallicola Lowell Ahart 1993-6-20 6989 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CAS-BOT-BC265845  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson Comment
  CHSC7187  Phalaris caroliniana J. G. Moore 1969-4-18 125 Butte 350 yds. nw of Cherokee Rd. 1 mi s of Oregon City turnoff. In meadow. 381 Comment
  CHSC36521  Phalaris lemmonii L. Ahart 1982-5-10 3431 Butte On bottom of a vernal pool in the fields, Peter Ahart Ranch, Honcut, ca. 2.5 mi n and 1/4 mi e of Honcut. 50 Comment
  CAS-BOT-BC265953  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte 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
  CHSC29282  Phalaris paradoxa R. A. Schlising 1979-6-3 3433 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
  CHSC114285  Philadelphus lewisii J. R. Keck Jr. 1978-5-23 Butte Highway 70, Jarboe Gap. Near Poe Power House. Comment
  CHSC76955  Philadelphus lewisii Ida Ryan 1893-5-1 Butte Chico. Comment
  RSA754544  Philadelphus lewisii L. Ahart 2009-5-23 15723 Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  CDA25503  Philadelphus lewisii subsp. californicus G. D. Barbe, T. C. Fuller 1982-6-14 3681 Butte Highway 70 in Feather River Canyon, above Pulga, 1.6 miles below PG&E power plant. Comment
  OBI48878  Philadelphus lewisii subsp. californicus Lewis S. Rose 1940-5-30 40423 Butte Feather River Cyn, 25 mi NE of Oroville 610 Comment
  CAS-BOT-BC250865  Phleum pratense M. S. Taylor 1978-7-18 1720 Butte On n side of Butte Creek, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground 1524 Comment
  CHSC6628  Phlox M. MacArthur 1968-6-13 323 Butte SE yard of building V, Chico State College campus. 60 Comment
  CHSC35092  Phlox diffusa R. A. Schlising; R. Banchero, J. Fuller, M. Merryman 1981-6-20 4100 Butte NE part of county, E of Inskip and E of Jones Meadow. 1856 Comment
  POM282388  Phlox diffusa subsp. diffusa E. B. Copeland 1931-6-19 683 Butte Jonesville. 2100 Comment
  SEINET10492843  Phoradendron juniperinum subsp. libocedri Mary Susan Taylor 1981-5-15 Taylor 3739 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  CHSC40680  Phoradendron libocedri Lowell Ahart 1985-9-18 5169 Butte Tree was on dry lava soil on a lava cap, about 2 miles west of Sly Creek Reservoir, east of the intersection of Golden Trout Crossing road on Reville Ridge. 914 Comment
  CHSC31425  Phoradendron villosum L. Ahart 1980-9-10 2624 Butte Near Bean Creek Rd., ca. 0.5 mi se of Little Bald Rock, ne of Oroville. 1100 Comment
  CHSC55062  Phyla nodiflora var. rosea Lowell Ahart 1991-9-14 6725 Butte On the south end of the dam at the large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC113119  Physalis lancifolia Lowell Ahart 2013-11-18 19285 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  UC580804  Physalis lancifolia H. S. Yates 1936-8-14 6127 Butte 3 mi nw Nelson; Chico Quad. 30 Comment
  NY43557  Physocarpus capitatus S. Bianco 1995-10-28 1043 Butte Near Crain Park, along E margin of Concow Lake 610 Comment
  UCD113671  Physocarpus capitatus L. Ahart 1982-6-1 3526 Butte ca. 1/2 mi sw of jct of Black Bart Rd and Forbestown Rd, w of Forbestown. 750 Comment
  CHSC102824  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
  CHSC51272  Phytolacca americana Lowell Ahart 1990-9-21 6598 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
  CHSC69109  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte On the east side of the native plant garden, Durham Elementary School, Durham. 57 Comment
  CHSC103940  Pilularia americana Lowell Ahart 2010-5-22 16712 Butte South of the road, about 120 yards east of the fence, about 220 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 379 Comment
  CHSC78115  Pilularia americana Lowell Ahart 2000-5-21 8378 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  RSA5147  Pinus contorta var. murrayana E. B. Copeland 1929-7-15 334 Butte Jonesville 1550 Comment
  CHSC84953  Pinus jeffreyi Lowell Ahart 2003-10-17 10641 Butte In rock pile about 25 yards north of Humboldt Peak, about 1/2 mile east of Humboldt Summit, about 8 miles (air) northeast of Butte Meadows. 2154 Comment
  CHSC3267  Pinus nigra M. L. Hillier 1966-4-11 Butte Bidwell Park Nature Trail near Cedar Grove. Comment
  CHSC103965  Piperia elongata Lowell Ahart 2010-5-7 16618 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC43799  Piperia michaelii Vernon Oswald 1985-5-13 1753 Butte Upper Bidwell Park, Chico, at the Indian caves near rimrock above the Police Pistol Range. 146 Comment
  CHSC82484  Piperia transversa Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9743 Butte Mountainside, on the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  SEINET10905338  Piperia unalascensis Mary Susan Taylor 1978-7-18 Taylor 1694 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC108774  Pistacia atlantica 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. 45 Comment
  CHSC20534  Pittosporum tobira Pamela Caldwell 1972-5-7 Butte Behind President's Mansion across roadway from CSUC. Comment
  CHSC26445  Pittosporum tobira Pam Moyer 1971-10-1 25 Butte CSUC Campus. Bidwell Mansion front lawn. Comment
  SEINET10529817  Pityrogramma pallida Mary Susan Taylor 1980-4-6 Taylor 2446 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  SEINET10529833  Pityrogramma triangularis Mary Susan Taylor 1980-7-6 Taylor 3079 Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  SEINET10529963  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1981-2-11 Taylor 3378 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  CHSC115001  Plagiobothrys Lowell Ahart 2015-3-2 19943 Butte Along a small path, low area, 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  CAS-BOT-BC169562  Plagiobothrys M. S. Taylor 1975-4-26 515 Butte Kunkle Reservoir, ca 500 yds E of Pentz-Magalia Hwy, ca 1 mi SE of Paradise 609 Comment
  SEINET10964627  Plagiobothrys Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5391 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CHSC7059  Plagiobothrys austiniae Lynn R. Thomas 1969-3-3 3 Butte S edge of Humboldt Rd., 1.4 mi e of junction with Stilson Canyon and Bruce Rds., or 3.3 mi e of US 99 freeway underpass, Chico. 152 Comment
  UCD80155  Plagiobothrys austiniae CNPS SN Foothill Team 2005-4-14 SNFN 0034 b Butte Private Rock Ranch, located near the southeast corner of the Rock Ranch pasture. The plot is ~ 45 m from the southern fence and 30 m west of the eastern fence. 98 Comment
  CHSC10672  Plagiobothrys bracteatus Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCR46079  Plagiobothrys canescens A. A. Heller 1926-4-21 13935 Butte Along Rock Creek, 7 mi. north of Chico 152 Comment
  CHSC32127  Plagiobothrys glyptocarpus L. Ahart 1978-4-27 1667 Butte Along edges of small wash. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10837185  Plagiobothrys glyptocarpus Mary Susan Taylor 1984-4-6 Taylor 5408 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
  CHSC29254  Plagiobothrys greenei M. S. Taylor 1975-4-29 541 Butte In fields ca. 100 yds s of Pentz Rd., ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. 60 Comment
  CHSC39624  Plagiobothrys greenei Lowell Ahart 1983-5-12 3970 Butte Along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  CHSC46780  Plagiobothrys greenei Lowell Ahart 1980-5-10 2223 Butte On the bottom of a small wash in a farmed field, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC228251  Plagiobothrys hispidulus A. A. Heller 1915-6-11 11969 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC61634  Plagiobothrys hispidulus Lowell Ahart 1993-9-13 7238 Butte On the bottom of a small wash on the north side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UCR187084  Plagiobothrys nothofulvus Anna M. Hurlbutt, C. R. Weeks 2007-4-26 008 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  SEINET10497554  Plagiobothrys nothofulvus Mary Susan Taylor Taylor 993 Butte Bidwell Park, Chico. Comment
  CHSC31582  Plagiobothrys scriptus L. Ahart 1977-4-2 1235 Butte On bottom of small swale. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC90483  Plagiobothrys shastensis Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 497 Comment
  JEPS107359  Plagiobothrys shastensis Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11672 Butte Big Chico Creek Ecological Reserve. Ridge top, on the north side of a very poor dirt road, about 1/2 mile southwest of the Indian Cave, about 1 1/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico 497 Comment
  CHSC117421  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-30 20889 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 31 Comment
  CHSC38278  Plagiobothrys stipitatus var. micranthus Vernon Oswald 1983-4-20 356 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). Along the edge of vernal pond. 85 Comment
  CHSC51101  Plagiobothrys stipitatus var. micranthus J. Monelo 1990-3-17 20 Butte On n side of Skyway, ca 7 mi e of Hwy 99 and ca 5 mi n of Paradise. 152 Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  JEPS117270  Plantago coronopus Lowell Ahart 2010-5-14 16638 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 394 Comment
  CHSC77991  Plantago virginica Lowell Ahart 2000-5-13 8348 Butte On the margin of the Thermalito Afterbay, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  JEPS87172  Platanthera leucostachys Lowell Ahart 1992-6-26 6781 Butte about 1/2 mi nw Merrimac (e side Rogers Cow Camp); e side Rogers Cow Camp 1219 Comment
  CHSC38587  Platanus racemosa Vernon Oswald 1983-7-13 867 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Growing near the creek in riparian woodland. 85 Comment
  CAS-BOT-BC91593  Platystemon californicus H. E. Brown 1897-4-15 467 Butte Near Clear Creek. 53 Comment
  UC176196  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte along Big Chico Creek (e of Chico) Comment
  SD60213  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte Near Sandy Gulch on the road to golf links near Chico. Comment
  HSC92454  Plectritis ciliosa L. Ahart 1974-4-11 378 Butte North Honcut Creek, Peter Ahart Ranch, 1.25 mi. N and 3 mi. E of Honcut, 12 mi. S of Oroville. 46 Comment
  JEPS15251  Plectritis ciliosa subsp. ciliosa Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5614 Butte 6 mi s of Oroville (along road from Oroville to Bangor) 167 Comment
  CHSC111356  Plectritis macrocera Lowell Ahart 2012-5-4 17994 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
  SD65551  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 Butte Jonesville 1550 Comment
  CAS-BOT-BC458151  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft. W of Old Humboldt Rd. 2011 Comment
  SEINET10593437  Poa annua A. Arthur Heller 1914-3-28 Heller 11243 Butte Chico. Comment
  SEINET11688462  Poa bolanderi Unknown 1985-1 5147 Butte along Willow Creek, near Section Corner of Sections 17, 16, 20, & 21, ca 4 mi E of Cherry Hill 1829 Comment
  CHSC101297  Poa bulbosa Lowell Ahart 2009-4-22 15598 Butte South side of Guardians Trail, about 50 yards west of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CAS-BOT-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
  UC4609251  Poa compressa Lowell Ahart 1993-7-23 7094 Butte ca 6 air mi ne Feather Falls (w side of Fall River, ca 100 yds w of bridge across Fall River) 1036 Comment
  CHSC42451  Poa pratensis Lowell Ahart 1987-5-6 5560 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
  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
  CHSC38846  Poa pratensis subsp. pratensis Vernon Oswald 1983-5-9 463 Butte Upper Bidwell Park, Chico, along the Yahi Trail where it follows the margin of Chico Creek e of Brown's Hole. 207 Comment
  SD112  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at the summit on a steep gravelly north slope which in most years remains covered with snow 609 Comment
  SEINET10659285  Poa pringlei Edwin B. Copel 1931-6-22 Copeland 606 Butte Jonesville. At "the Summit," on a steep gravelly north slope which, during most years, remains covered with snow. 2000 Comment
  SEINET10659386  Poa scabrella Lowell Ahart 1990-4-28 Ahart 6471 Butte South side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville.Growing on dry soil on steep banks. Foothill Woodland. 40 Comment
  CHSC25105  Poa secunda subsp. secunda R. W. Wallstrum 1970-3-26 8 Butte Lower side of dam at Magalia Reservoir, 8 mi from Paradise, on s side of road. 609 Comment
  CHSC27795  Poa secunda subsp. secunda K. Bridwell 1978-3-11 41 Butte 1 mi ne intersection of Rock Creek Rd and Cohasset Hwy, along Cohasset Hwy. Ca. 4 mi ne of Chico. 457 Comment
  CHSC8603  Poa secunda subsp. secunda M. Banning 1969-3-22 20 Butte S. edge of Chico Golf Course. 70 Comment
  CHSC45030  Pogogyne douglasii Pauleen Broyles 1988-4-6 1101 Butte The Nature Conservancy Vina Plains Preserve. West of reservoir in n.e. portion of Addition, in an extensive low area. Comment
  JEPS62441  Pogogyne douglasii W. L. Jepson 1932-5-9 16367 Butte E. of Cana Comment
  UC1988916  Pogogyne douglasii Robert F. Hoover 1937-5-19 2243 Butte ten miles northwest of Chico Comment
  RSA0022171  Pogogyne zizyphoroides Aaron Liston 1989-4-12 782 -1 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99. 55 Comment
  SEINET12320807  Pogogyne zizyphoroides E. C. Taylor 1975-1 39 Butte Ca 10yds W of Cohasset Hwy. opposite the Chico Municipal Airport, 2.7 mi N of Chico 76 Comment
  CHSC14112  Polanisia dodecandra subsp. trachysperma F. T. Griggs 1974-8-8 143 Butte Growing on top of a sandbar in the Sacramento River, between Hamilton City Bridge and the mouth of Big Chico Creek. Comment
  CAS-BOT-BC167549  Polygala cornuta var. cornuta Lowell Ahart 1989-5-31 6334 Butte North of the end of Truex Road, near Lake Oroville, about 1/4 mile north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CAS-BOT-BC167552  Polygala cornuta var. cornuta John Thomas Howell 1962-6-15 37473 Butte Magalia 731 Comment
  SBBG121598  Polygala cornuta var. cornuta L. Ahart 2007-5-29 13921 Butte ca. 1/8 mi S of Bald Rock Dome on both sides of the Dome Trail, trail leads to the Middle Fork of the Feather River 685 Comment
  RSA697050  Polygonum amphibium var. emersum L. Ahart 2003-6-16 10287 Butte W side of Wickman Road, 1 mile S of Richvale West Road, 1.5 miles air SW of Richvale. 29 Comment
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CAS-BOT-BC413924  Polygonum aviculare subsp. aviculare Lowell Ahart 1980-5-10 2232 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC109129  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte Near Hog Springs, 6 miles east of Chico. Between Chico and Forest Ranch, 8 miles from Chico. Comment
  CAS-BOT-BC109136  Polygonum bidwelliae Lowell Ahart 1979-5-29 s.n. Butte 2.5 mile southeast of Paradise. Near Kunkle Creek. 500 Comment
  CHSC97344  Polygonum bidwelliae Paul Maslin 2005-5-1 57 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  UC398664  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte along grade on road from Chico to Paradise; Neale grade Comment
  UC186377  Polygonum californicum Dr. C. C. Parry Oct. 1881 Butte Chico Comment
  SEINET10838776  Polygonum californicum Mary Susan Taylor 1980-5-31 Taylor 2771 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
  CHSC44926  Polygonum douglasii subsp. douglasii Lowell Ahart 1988-7-31 6158 Butte Near the road, on the north side of the stream that is a branch of Last Chance Creek, about 1 air mile west and a little north of Bald Mountain, about 3 1/2 air mile north-east of Stirling City. 1066 Comment
  JEPS88583  Polygonum douglasii subsp. douglasii Vernon H. Oswald and Lowell Ahart 1996-7-22 8082 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (w side of levee at sw corner of Tract 6, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 30 Comment
  UC600496  Polygonum douglasii subsp. douglasii H. F. Copeland 1920-7-24 318 Butte meadow by Colby Creek; Jonesville Comment
  SEINET10937606  Polygonum hydropiperoides var. asperifolium Mary Susan Taylor 1978-9-8 Taylor 1883 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  POM219114  Polygonum minimum E. B. Copeland 1931-7-18 631 Butte Jonesville, by Butte Creek 1500 Comment
  UC600495  Polygonum minimum H. F. Copeland 1928-7-18 1005 Butte near Butte Creek; Jonesville 1524 Comment
  CAS-BOT-BC419811  Polygonum parryi Lowell Ahart 1985-6-17 5060 Butte 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls 975 Comment
  CHSC48664  Polygonum parryi Vernon Oswald 1986-5-6 1997 Butte Cohasset ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CHSC60843  Polygonum parryi Vernon H. Oswald; Lowell Ahart 1993-6-22 5560 Butte Gravel pit in Long Ravine W of Stirling Ciry, where Hendricks Canal tunnel dumps into the creek. 975 Comment
  CHSC61004  Polygonum parryi Lowell Ahart 1993-6-20 6985 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CAS-BOT-BC71870  Polypodium californicum Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch, Honcut, N Honcut Creek 50 Comment
  CAS-BOT-BC71858  Polypodium californicum D. E. Nay 1975-4-10 28 Butte ca. 200 m SSW of Covered Bridge on hillside, 6.4 mi ESE of 99E/Skyway jct, Chico 137 Comment
  CHSC115494  Polypodium calirhiza L. P. Janeway 2015-11-18 11632 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  CHSC28514  Polypodium calirhiza M. S. Taylor; J. D. Jokerst 1979-10-13 2270 Butte Near creek on Jordan Hill Rd (Ponderosa Way on some maps) ca. 10.7 mi n of its jct with Concow Rd, ca. 1.5 mi n of Sawmill Peak, ca. 2 mi e of Magalia. 853 Comment
  CHSC39233  Polypodium calirhiza M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5215 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  CHSC46173  Polypodium calirhiza Lowell Ahart 1974-3-18 327 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
  JEPS120173  Polypodium calirhiza Lowell Ahart 2012-2-22 17740 Butte On the east edge of Big Chico Creek, about 100 yards south of the trail crossing the creek, about 100 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  SBBG126088  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte N side of large rock, on E edge of Big Chico Crk, ca.100 yards S of the trail crossing the crk, ca 100 yards W of Ten Mile House Rd, ca 3/4 mi W of Hwy 32, ca 9 mi NE of Chico 189 Comment
  CHSC102416  Polypogon australis Lowell Ahart 2009-6-19 15927 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  JEPS94825  Polypogon australis Lowell Ahart 1998-6-9 7988 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
  RSA755345  Polypogon australis L. Ahart 2009-7-9 16012 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  CHSC37109  Polypogon maritimus L. Ahart 1982-10-15 3888 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  CHSC8578  Polypogon monspeliensis B. Hamilton 1969-4-18 34 Butte Found around sidewalk at Humboldt and Flume Streets, Chico. Comment
  CAS-BOT-BC237453  Polypogon viridis Lowell Ahart 1980-9-10 2638 Butte 5 miles E of Milsap Bar 1200 Comment
  JEPS87566  Polystichum Lowell Ahart 1994-10-9 7561 Butte ca. 8 1/2 air mi n and 1 1/2 mi e of Feather Falls (n side of poor rd from Milsap Bar to Mountain Spring House, ca. 1 mi w of Mountain Spring House and the paved rd.) 1158 Comment
  CHSC32686  Polystichum imbricans M. S. Taylor 1981-3-18 3420 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  CHSC39300  Polystichum imbricans Lowell Ahart 1983-7-24 4213 Butte At the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC60945  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC86424  Polystichum imbricans subsp. imbricans R. D. Fischer; Paul Maslin 2004-2-7 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Plants located about half mile south of main entrance. UTM: 10 609952E 4408993N. 380 Comment
  JEPS110225  Polystichum imbricans subsp. imbricans Lowell Ahart 2006-10-8 13442 Butte About 10 yards below a granite bolder, on the southwest side of Highway 70, east of the North Fork of the Feather River, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC38664  Populus fremontii Vernon Oswald 1983-5-4 431 Butte Upper Bidwell Park, Chico, at the base of the s dike of Horseshoe Lake. 96 Comment
  CHSC46884  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-4 3978 Butte Wurlitzer Unit, Vina Plains Preserve. In a farm pond. 56 Comment
  CHSC50855  Potamogeton foliosus var. foliosus Vernon Oswald 1990-7-28 4406 Butte De Sabla Lake, near the Skyway between Magalia and Stirling City. 801 Comment
  UC1100068  Potamogeton nodosus Verne Grant and Herbert L. Mason 1946-8-7 12990 Butte Gridley Road n of Butte Sink Comment
  UCR190829  Potentilla glandulosa 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
  CDA13869  Potentilla glandulosa subsp. nevadensis G. F. Hrusa, T. D. Wilfred 1997-5-7 13727 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  UC481577  Potentilla millefolia H. F. Copeland 1931-6-11 1535 Butte Butte Creek Meadows , Jonesville 1828 Comment
  JEPS122064  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 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
  CHSC37530  Proboscidea lutea M. S. Taylor; L. Ahart 1982-10-11 5158 Butte Graylodge Wildlife Refuge, just se of HQ quad, 12 mi sw of Gridley. 19 Comment
  CHSC43831  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-26 2316 Butte SW end of Logue Meadows. 1325 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
  CHSC26698  Prunus emarginata M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1474 Butte On s side of Old Humboldt Rd, ca. 3 mi e of its jct with Scotts John Rd, n of Jonesville. 1828 Comment
  LA208076  Prunus emarginata E. B. Copeland; 1931-7-28 650 Butte Jonesville, W of North Willow Creek 1650.0 Comment
  CHSC6045  Prunus persica M. MacArthur 1968-6-19 229 Butte Ca. 10 ft. SE of Big Chico Creek near PSA bridge, Chico State College. 60 Comment
  CHSC58676  Pseudobahia heermannii M. Bailey 1991-4-23 728 Butte Ca 750 feet south of the Covered Bridge which is ca 8 mi ne of Chico on Humbug Road. Comment
  CAS-BOT-BC357003  Pseudognaphalium luteoalbum Lowell Ahart 1980-5-25 2348 Butte Along Ponderosa Way 500 Comment
  CHSC26657  Pseudognaphalium thermale M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1500 Butte On e side of the Skyway, in Inskip. 1615 Comment
  CHSC46923  Pseudognaphalium thermale Lowell Ahart 1980-7-29 2493 Butte Along the edge of Swedes Flat Road, about 1 1/2 miles east of the Bangor Oroville, Highway, near Bangor. 304 Comment
  CHSC31052  Pseudostellaria jamesiana M. S. Taylor 1978-8-19 1753 Butte On w side of Upper Scotts John Rd, ca. 2 mi n of jct of Upper Scotts John Rd and Scotts John Rd, ca. 4 mi e of Jonesville. 1828 Comment
  CHSC34817  Pseudostellaria sierrae M. S. Taylor 1981-5-14 3729 Butte E side of 23N30.2 along rd and ridge, ca. 1 mi se of Bear Ranch Hill, ca. 2 air mi nw of Four Trees on Oroville-Quincy Hwy. 1493 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
  SEINET10475179  Psilocarphus oregonus Lowell Ahart 1983-6-6 Ahart 4033 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  SEINET10475180  Psilocarphus oregonus Mary Susan Taylor 1979-5-6 Taylor 2003 Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  UC109313  Ptelea crenulata R. M. Austin May 1883 263 Butte Comment
  CAS-BOT-BC72548  Pteridium aquilinum Lowell Ahart 1981-9-15 3163 Butte One and a quarter miles N of the Lost Creek Reservoir 1300 Comment
  CHSC44618  Pteridium aquilinum var. pubescens Vernon Oswald 1983-7-26 915 Butte Calif. Hwy 32, 11.8 mi n-e of Forest Ranch. 1158 Comment
  UC726637  Pteridium aquilinum var. pubescens A. A. Heller 1916-9-23 12660 Butte near Forest Ranch Forest Ranch; Sierra foothills Comment
  POM132116  Pterospora andromedea Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  RSA392945  Pterostegia drymarioides C. R. Quick 1929-3-29 s.n. Butte Sand Creek Road NE orange Cove. 183 Comment
  CHSC12607  Punica granatum S. Posner 1972-9-20 Butte Ca. 20 ft. w of Nord Ave, ca. 1/4 mi n of First St, Chico. Comment
  CAS-BOT-BC147770  Purshia tridentata var. tridentata V. Oswald; L. Ahart 1988-7-29 3639 Butte Ca. 5 mi (air) se of Jonesville on the n edge of the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC62562  Pycnanthemum californicum B. Castro 1993-7-7 468 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  CHSC5983  Pyracantha crenulata M. MacArthur 1968-6-12 151 Butte NW side of LS bld. at the SW corner, Chico State College campus. 60 Comment
  CDA34560  Pyracantha koidzumii L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. Comment
  JEPS113317  Pyracantha koidzumii L. P. Janeway 2006-10-4 8904 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. Comment
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  CHSC33403  Pyrola dentata R. E. Preston 1981-7-8 24 Butte Ca. 0.8 km e of Humboldt Peak, ca. 5.5 km nne of Jonesville. 1952 Comment
  UCR231087  Pyrola dentata Anna M. Hurlbutt 2009-8-7 019 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  UC876268  Pyrola picta A. A. Heller 1914-7-23 11597 Butte in (burnt over) tracts about Chico meadows Chico; Chico meadows 1219 Comment
  CHSC110118  Pyrus calleryana L. P. Janeway 2012-5-2 10819 Butte Sacramento Valley. City of Chico; semi-natural riparian strip be-tween Big Chico Creek and Vallombrosa Way just southwest of One Mile Recreation Area; northwest side of the creek. 62 Comment
  UC2026889  Quercus Lowell Ahart, Susan Bazell, Josephine Guardino 2012-5-31 18121 Butte 40 yards north of the paved park road (Peterson Drive) about 700 yards west of the gate, northwest of the parking Area, Lower Bidwell Park, Chico. 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
  UC2026893  Quercus acutissima Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCD169920  Quercus berberidifolia L. P. Janeway 2008-6-15 9408 Butte Cascade Range Foothills. Near the ridge top, about 25 m northwest of Hwy 32 about 4.2 air km south-southwest of Forest Ranch. 570 Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  CHSC30792  Quercus chrysolepis M. S. Taylor 1980-5-27 2659 Butte On trail to Big Bald Rock from parking lot, ca. 3 mi e of Lake Madrone. 996 Comment
  UC726855  Quercus chrysolepis A. A. Heller 1918-5-5 13016 Butte above, on the n slope Butte Creek (Honey Run grade); Honey Run Grade Comment
  SEINET13953242 Image available Quercus chrysolepis A. A. Heller 1918-1 Butte Honey Run grade on a north slope in the digger pine and oak belt Comment
  CHSC75373  Quercus chrysolepis var. chrysolepis Lowell Ahart 1999-6-12 8085 Butte Additional township information (T20N R04E S08 SW1/4, close to border with S07). Steep shaded south slope of the south branch of Coal Canyon, 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
  CAS-BOT-BC94250  Quercus garryana var. breweri M. S. Taylor; J. D. Jokerst 1979-10-13 2246 Butte Foothill Woodland at Jordan Hill Rd (Ponderosa Way on some maps) bridge over creek, ca. 8 mi N of its jct with Concow Rd 426 Comment
  CHSC90047  Quercus kelloggii Rhonda Posey 1991-4-16 20 Butte Ca. 50 m S of Butte Creek and 0.3 km W of Covered Bridge, 10.2 km ESE of Chico. 120 Comment
  UC600523  Quercus kelloggii H. F. Copeland 1920-7-26 171 Butte Jonesville Comment
  SEINET10477266  Quercus kelloggii Mary Susan Taylor 1980-5-27 Taylor 2657 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CAS-BOT-BC61583  Quercus lobata Lowell Ahart 1979-5-12 s.n. Butte near banks of Honcut Creek 50 Comment
  CAS-BOT-BC104487  Quercus vacciniifolia Lowell Ahart 1982-9-29 3833 Butte At the north end of Lost Creek Res. Dam, about 2 miles NW of Strawberry Valley 1100 Comment
  POM219009  Quercus vacciniifolia E. B. Copeland 626 Butte Jonesville. 1500 Comment
  CHSC31829  Quercus wislizeni L. Ahart 1977-4-16 1305 Butte Along the banks of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  UCD47602  Quercus wislizeni var. wislizeni P. Akers 2002-5-5 s.n. Butte Road to Table Mtn from Oroville. 293 Comment
  CHSC108978  Rafinesquia californica Lowell Ahart 2012-4-30 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. 260 Comment
  SEINET516312  Ranunculus alismifolius var. hartwegii Vernon H. Oswald 1998-4-30 8985 Butte Meadow on the north side of Humboldt Rd. just W of Scout Rd. in Butte Meadows. 1326 Comment
  CHSC52776  Ranunculus aquatilis var. hispidulus B. Castro 1982-4-14 16 Butte In stream atop s end of North Table Mtn, off Cherokee Rd ca. 4 mi n of Oroville. 152 Comment
  CHSC9109  Ranunculus aquatilis var. hispidulus J. Goodwin 1970-4-28 60 Butte 1.7 mi. on Upper Park Road, Bidwell Park, Chico. Southeast corner of Horse Shoe Pond. Comment
  CHSC52463  Ranunculus aquatilis var. subrigidus Kirsten Tarp 1983-8-6 331 Butte N part of county, ca. 0.9 mi w of Cherry Hill; in stream. 1414 Comment
  CAS-BOT-BC378935  Ranunculus californicus var. californicus Lowell Ahart 1979-4-3 s.n. Butte Honcut, Peter Ahart Ranch 50 Comment
  CHSC52948  Ranunculus canus Vernon Oswald 1983-2-14 73 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. about 0.7 mi e of the power lines. 115 Comment
  CHSC45403  Ranunculus hebecarpus Lowell Ahart 1974-4-11 386 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 51 Comment
  CHSC87438  Ranunculus hebecarpus R. D. Fischer 2004-3-31 102 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  JEPS107343  Ranunculus muricatus Lowell Ahart 2005-4-2 11693 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
  CHSC52794  Ranunculus occidentalis M. S. Taylor 1979-3-31 1963 Butte Lickey Property, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd, and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC53704  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1981-8-4 71 Butte Ca. 1 mi e of Butte Creek House in n part of county. In meadow. 1853 Comment
  CHSC45514  Ranunculus pusillus Lowell Ahart 1974-4-28 445 Butte In a rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC54308  Ranunculus repens var. pleniflorus Vernon H. Oswald; Lowell Ahart 1991-6-5 4655 Butte Ewalt Camp on the West Branch of Butte Creek, east of Hwy 32 and north of Carpenter Ridge Rd, between Forest Ranch and Lomo. Along the creek. 914 Comment
  CHSC42977  Ranunculus uncinatus var. parviflorus Lowell Ahart 1987-7-8 5806 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CDA35702  Rhamnus californica subsp. californica L. Ahart 2002-9-9 9937 Butte 100 yards south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown Comment
  CAS-BOT-BC59882  Rhamnus ilicifolia Lowell Ahart 1989-5-10 6211 Butte Near a dirt road, about 1/10 mi. nw. of the West Branch Bridge across Lake Oroville. 304 Comment
  CDA13885  Rhamnus ilicifolia G. F. Hrusa, T. D. Wilfred 1997-5-8 13743 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC62409  Rhus aromatica B. Castro 1987-5-18 111 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive 457 Comment
  CHSC44064  Rhynchospora californica L. P. Janeway 1988-5-30 2717 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 1/2 mi NE of the power lines. 152 Comment
  SEINET7589325 Image available Rhynchospora capitellata L. P. Janeway, S. Galen Smith 2006-7-27 8821 Butte Pulga 7.5' quad, Northern High Sierra Nevada. Northeast side of Flea Valley, 1.1 km west-northwest of Flea Mountain. 1140 Comment
  CHSC69046  Ribes nevadense Lowell Ahart 1997-8-1 7760 Butte On the west side of Little Kimshew Creek, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1432 Comment
  SEINET12215665  Ribes roezlii Unknown 1977-1 5 Butte ca 15 mi E of Chico, 3 mi NE of Forest Ranch & 50 yds NE of Little Chico Creek 792 Comment
  CHSC3496  Robinia pseudoacacia Roger Jaegel 1966-4-14 123 Butte Located four miles west of Forest Ranch. Comment
  CAS-BOT-BC74473  Rorippa curvisiliqua F. N. Bassett 1923-6-16 s.n. Butte Jonesville. Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  SEINET10448488  Rorippa curvisiliqua Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4205 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC96825  Rorippa curvisiliqua var. orientalis Lowell Ahart 2007-5-29 13934 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  JEPS114454  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-8 14713 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  CHSC38423  Rorippa nasturtium-aquaticum Vernon Oswald 1983-5-11 477 Butte Upper Bidwell Park, Chico, 300 ft s of Upper Park Rd. and 1400 ft e of Parking Area N (Salmon Hole). 182 Comment
  JEPS115603  Rorippa nasturtium-aquaticum Lowell Ahart 2009-5-23 15728 Butte Opening in a drainage, 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
  CHSC42947  Rorippa palustris var. fernaldiana Lowell Ahart 1987-7-3 5779 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10483501  Rosa californica Mary Susan Taylor 1975-7-4 Taylor 833 Butte Washout area, Sacramento River off River Road, ca. 10 mi E of Chico. Riparian Woodland with Populus fremontii, Sorghum halepense. 30 Comment
  CHSC102517  Rosa pisocarpa Lowell Ahart 2009-5-30 15800 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  SEINET4856098  Rosa pisocarpa subsp. ahartii Unknown 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 air miles ESE of Oroville. 655 Comment
  UC1926781 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC50561  Rosa pisocarpa subsp. pisocarpa Vernon Oswald; Lowell Ahart 1990-7-5 4346 Butte Camping area along Butte Creek on F-Line, 0.4 mi southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. On the bank of the creek. 1316 Comment
  CHSC43945  Rosa rubiginosa Vernon Oswald 1988-5-17 3312 Butte Near jct. Forbestown Rd. and e end of Black Bart Rd. In a meadow. 743 Comment
  UCD19370  Rotala ramosior E. Dean; with J. Ditomaso and E. Healy 2001-8-20 861 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. Just S of main research buildings at field station, W of RR tracks and ca. 2 east-west running dirt roads S of buildings. Along east-west running dirt road. 30 Comment
  CHSC115406  Rubus armeniacus M. Rogers 2013-5-9 Butte City of Chico, CSU Chico, found adjacent to Big Chico Creek on campus just east of Holt Hall. 60 Comment
  POM366458  Rubus discolor L. Ahart, P. Ahart 1984-6-10 4716 Butte About 2 miles SW of Forbestown Diversion Dam. NE of Forbestown. 700 Comment
  CAS-BOT-BC148350  Rubus laciniatus Lowell Ahart 1982-9-29 3834 Butte along the edge of the road and near Pinkard Creek, about 1/10 mile north of the Lost Creek Res. Dam, about 2 and 1/10 miles north-west of Strawberry Valley. 1100 Comment
  UC650296  Rubus laciniatus E. B. Copeland 1940-8-6 Butte Forest Ranch Comment
  SEINET11910947  Rubus parviflorus L. Ahart, Ahart, P. 1984-1 4695 Butte ca 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  POM183166  Rubus parviflorus var. bifarius H. F. Copeland 1930-7-26 1328 Butte Jonesville. 1677 Comment
  SEINET10483605  Rubus procerus Mary Susan Taylor 1978-7-21 Taylor 1820 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CDA42870  Rubus ursinus L. Ahart 2012-5-14 18058 Butte 100 feet east of Table 13, south of Big Chico Creek, on the north side of the paved road, Lower Bidwell Park, Chico. Comment
  CHSC48876  Rubus ursinus Vernon Oswald 1987-4-6 2308 Butte Butte Creek Reserve on the n side of Butte Creek ne of the Skyway. 80 Comment
  CHSC52128  Rubus ursinus L. P. Janeway 1988-5-19 2668 Butte West Branch Mud Cr at Vilas Rd crossing, just E of Cohasset. At edge of rd. 746 Comment
  JEPS115605  Rubus ursinus Lowell Ahart 2009-5-23 15736 Butte Along the west edge of a meadow and the east bank of Big Chico Creek, west of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CHSC112338  Rumex acetosella Lowell Ahart 2013-7-9 18835 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC37136  Rumex acetosella L. Ahart 1982-5-28 3443 Butte Under a Digger Pine and near a small wash, e of North Honcut Creek, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC1356  Rumex crispus H. Goodyear 1939-5-29 Butte Near Chico. 57 Comment
  CHSC45385  Rumex dentatus subsp. klotzschianus Vernon Oswald 1985-5-8 1750 Butte Graylodge Waterfowl Management Area near Parking Lot #5 on Rutherford Rd. Common in the bottom of a drying pond which was vernally wet. Comment
  JEPS117514  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  CHSC31769  Rumex salicifolius L. Ahart 1974-7-2 507 Butte Along North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC44420  Rumex salicifolius var. denticulatus Lowell Ahart 1988-6-28 6081 Butte On dry gravel bars along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2-1/2 miles east of Honcut. 39 Comment
  UCD77982  Rupertia hallii Robert E. Preston 2003-7-17 2161 Butte Ca. 1 mi SW of Butte Meadows, along both sides of The Skyway 1447 Comment
  CHSC35030  Sagina apetala A. W. Ratcliff; R. A. Schlising 1980-4-6 3551 Butte About 5 miles S of Chico along Oroville/Chico Road, near its jct with Nead Road. In vernal pool at roadside. Comment
  CHSC82440  Sagina apetala Lowell Ahart 2002-5-7 9617 Butte High banks of a pond, at the beginning of a southeast branch of Schirmer Ravine, about 50 yards east of the pond on the east side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. 228 Comment
  CHSC98988  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-8 14710 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  CHSC42736  Sagina saginoides Lowell Ahart 1987-5-6 5516 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC52011  Sagina saginoides L. P. Janeway 1987-6-20 2271 Butte Along rd to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. Near the river. 1013 Comment
  CHSC2052  Sagittaria montevidensis subsp. calycina D. Bower 1953-7-23 Butte 1A Llano Seco. 30 Comment
  POM313178  Sagittaria sanfordii H. L. Mason, Verne Grant 1946-8-8 13001 Butte West Gridley road one mile west of Gridley - Pennington highway. Comment
  UCD110928  Salix exigua E. M. Johnston 1915-1 s.n. Butte Biggs. Comment
  CHSC65019  Salix jepsonii Vernon Oswald 1988-6-20 3410 Butte Jones Meadow Rd. e of Inskip at Last Chance Creek. 1560 Comment
  JEPS115629  Salix laevigata Lowell Ahart 2009-5-15 15687 Butte On the east side of Big Chico Creek, about 50 yards west Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC125180  Salix lasiandra var. lasiandra A. A. Heller 1919-5-17 13160 Butte Banks of the Feather River near Stirling Comment
  CHSC108810  Salix lasiolepis Lowell Ahart 2012-4-9 17830 Butte Wet area in the rock corral, east of the cement dam in Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. 110 Comment
  CHSC99650  Salix lasiolepis H. Koeth 2007-5-1 Butte Shady Oak Dr., Oroville (Wyandotte), in natural spring. UTM 10 633982E 4365709N. 217 Comment
  CAS-BOT-BC129584  Salix lasiolepis var. lasiolepis A. A. Heller 1919-5-17 13164 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt. Comment
  CAS-BOT-BC124578  Salix lemmonii John Thomas Howell; Gordon H. True 1967-5-9 42240 Butte on northwest side of Feather River Canyon near Pulga Bridge Comment
  CAS-BOT-BC129490  Salix melanopsis Dr. E. B. Copeland 1931-6-10 622 Butte Jonesville, in meadows by Butte Creek. 1500 Comment
  UC446423  Salix melanopsis E. B. Copeland 1931-6-20 Butte across Butte Creek Jonesville 1500 Comment
  UC456788  Salix melanopsis E. B. Copeland 1931-5-8 Butte Sandy Gulch Chico; Hooker Oak Ford, Sandy Gulch Comment
  SBBG28807  Salix scouleriana E. B. Copeland 1931-7-30 Butte Jonesville 1550 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
  CHSC8617  Salvia sonomensis L. V. Ritter 1969-5-2 311 Butte Ca. 2 mi. w of Cohasset; ca 10 yds. s of Cohasset highway. Comment
  SEINET12320801  Salvia sonomensis M. S. Taylor 1975-1 493 Butte Ca 0.5 mi E of Cohasset Hwy, ca 10 mi N of Chico Comment
  CHSC21277  Sambucus mexicana M. S. Taylor 1974-4-30 198 Butte Scattered on E side of Cohasset Rd, ca. 7 mi N of Chico. 243 Comment
  RSA0036028  Sambucus nigra subsp. caerulea Lowell A. Ahart 2012-7-5 18280 Butte On the south side of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. 65 Comment
  CHSC11858  Sambucus racemosa E. B. Copeland 1930-7-12 480 Butte Above Jonesville. Along north brow of high ridge. 640 Comment
  CHSC36558  Samolus parviflorus L. Ahart 1982-8-22 3758 Butte Along edge of North Honcut Creek, a little sw of the Peter Ahart Ranch, ca. 1 mi n and 2 and 3/4 mi e of Honcut. 50 Comment
  SD149113  Samolus parviflorus Lowell Ahart 1980-8-16 2579 Butte Near Honcut 60 Comment
  CHSC90591  Sanicula bipinnatifida Gary R. Koses 1979-3-27 11 Butte 11 mi se of Chico, junction of Pentz rd and Pentz Magalia Hwy, s side of Pentz rd. Comment
  UC726870  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Paradise 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
  HSC38020  Sanicula bipinnatifida Thomas W. Nelson, Jane P. Nelson 1976-5-10 2480 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UCD127941  Sanicula bipinnatifida R. R. Kehlor 1951-3-10 11 Butte J.M. Kehlor Ranch, 6.25 miles east of Oroville. Sierra Nevada. 48 Comment
  CHSC4149  Sanicula bipinnatifida var. flava R. Carter 1966-4-2 327 Butte Found ca. 7 mi. E of Oroville, ca. 1/8 mi. W of Feathervale at 6120 Woodleaf St. Rt., 50 yds. SW of house. 243 Comment
  UC1562471  Sanicula graveolens Vernon Oswald and Lowell Ahart 1990-5-29 4260 Butte 1.8 mi E of Lomo (NW side of Humboldt Rd (to Butte Meadows)) 1380 Comment
  JEPS117134  Sanicula tuberosa Lowell Ahart 2010-5-7 16621 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
  RSA4229  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1500 Comment
  CAS-BOT-BC436859  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC436864  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET10628292 Image available Saxifraga fallax A. Arthur Heller 1914-3-19 Heller 11214 Butte Canon of Big Chico creek. Comment
  POM196145  Saxifraga oregana E. B. Copeland 1929-7-20 369 Butte Jonesville. 1550 Comment
  JEPS124202  Scandix pecten-veneris Lowell Ahart 2015-4-13 20040 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  CHSC37094  Sceptridium multifidum L. Ahart 1982-9-13 3817 Butte Along mined edge of Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CAS-BOT-BC283623  Schedonorus pratensis Lowell Ahart 1982-4-29 3399 Butte Along side of the dirt road, W of the Gray Lodge Headquarters ca 0.25 mile, Gray Lodge, ca 12 miles SW of Gridley 35 Comment
  CHSC47145  Schoenoplectus acutus var. occidentalis Henricus Jansen 1989-6-15 Butte Wild Goose. Sutter Butte Sink. Comment
  CDA39131  Scirpus fluviatilis Keith Rathbone 1953-6-19 s.n. Butte Richvale. 0 Comment
  CHSC56812  Scirpus microcarpus L. P. Janeway 1987-6-19 2236 Butte Along Sly Creek 2.1 mi from Challenge-LaPorte Road along the road to the southeast side of Sly Creek Reservoir. 1097 Comment
  CAS-BOT-BC239961  Scribneria bolanderi John Thomas Howell 1967-6-22 42617 Butte Magalia 701 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
  SEINET10968193  Scribneria bolanderi Mary Susan Taylor 1980-5-15 Taylor 2633 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  CHSC36517  Scutellaria californica L. Ahart 1982-5-28 3439 Butte Near Honcut Creek, near the Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 Comment
  POM70087  Scutellaria californica C. C. Bruce 1897-05 1825 Butte Little Chico. Comment
  UC1094741  Scutellaria californica Francia Chisaki 1956-6-1 907 Butte 22 mi s of Butte-Plumas County line (on Hwy alt. #40) Comment
  CHSC43688  Scutellaria siphocampyloides Vernon Oswald 1984-6-5 1254 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood control gate. 79 Comment
  POM70078  Scutellaria siphocampyloides C. C. Bruce 1897-04 1835 Butte Butte Creek. Comment
  CHSC87419  Scutellaria tuberosa R. D. Fischer 2004-3-13 109 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Humboldt Trail. 434 Comment
  SEINET10499230  Scutellaria tuberosa Mary Susan Taylor 1974-4-20 Taylor 184 A Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  CHSC3149  Sedella pumila Gary Dutton 1966-4-23 229 Butte Found on Hwy. 32, 9 miles from Chico Forest Ranch Road. Comment
  SEINET8472428  Sedella pumila A. A. Heller, H. E. Brown 1902-5-7 5486 Butte Berry Canyon , near Clear Creek. Comment
  CAS-BOT-BC59135  Sedum spathulifolium Lewis S. Rose 1963-6-2 63075 Butte 2 miles South of Pulga, North Fork Feather River. 579 Comment
  CAS-BOT-BC63853  Sedum spathulifolium J. F. Emmel 1970-4-5 251 Butte 1/3 air mile E of Richardson Springs along Mud Creek, on S side of creek. 213 Comment
  UC306791  Selaginella hansenii R. M. Austin May 1883 20 Butte bluffs along Little Chico Creek Little Chico Creek Comment
  SEINET10530435  Selaginella hansenii Mary Susan Taylor 1981-2-11 Taylor 3379 Butte T19N R6E sw sec 8. Big Bend quad. E side of Lumpkin Rd, along Macabes Creek, 2 mi n of jct of Lumpkin Rd & Oroville-Quincy Hwy (162), ca. 13 mi ne of Oroville. Riparian Wdlnd; 1500 ft. 457 Comment
  SEINET11716021  Selaginella hansenii P. L. Venable 1978-1 12 Butte 6 mi N of Oroville, 1 mi W of Cherokee Road 305 Comment
  CHSC109128  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On a bank, on the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 195 Comment
  CHSC43633  Senecio aronicoides Vernon Oswald 1984-6-11 1278 Butte Humboldt Rd. to Butte Meadows, 3.3 mi n-e of its jct. with Hwy 32. 1438 Comment
  SEINET10474908  Senecio eurycephalus var. lewisrosei Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4088 Butte T21N R5E sec 31. Along Bloomer Hill Rd, ca. 1.3 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 450 m. 450 Comment
  CHSC86574  Senecio integerrimus var. major L. P. Janeway; Gavin Blosser, Adam Henderson 2003-4-30 7768 Butte Northern Sierra Nevada Foothills. Just above North Fork Feather River arm of Lake Oroville, south side of lake; 2.7 km northeast of Bloomer Hill. 280 Comment
  RSA4143  Senecio subnudus E. B. Copeland 1930-6-27 497 Butte Jonesville. 1550 Comment
  JEPS118584  Senecio sylvaticus L. P. Janeway 2010-6-19 10030 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. Brush Creek 7.5' quad. Comment
  SBBG128460  Senecio sylvaticus L. Ahart 2012-4-9 17843 Butte high E cliff edge of Big Chico Crk, ca. 20 yards W of S Rim Trail, S part of Upper Bidwell Park, ca. 2.5 mi NE of Chico 206 Comment
  UC492742  Senecio triangularis E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  HSC68223  Senecio vulgaris J. P. Smith 1973-3-22 5923 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC27251  Sequoia sempervirens P. Moyer 1971-10-2 29 Butte CSUC Campus. On n side of L.S. Bldg. 60 Comment
  SEINET10612346  Sequoia sempervirens Dudley 1904-1-21 DUDLEY 74 Butte Canado de Raymundo, Santa Cruz Mts. Plants of the Santa Cruz Pennisula. Herbarium of Leland Stanford Jr. University. 274 Comment
  HSC72953  Sericocarpus oregonensis subsp. californicus M. S. Taylor 1980-9-12 3328 Butte W side of Hwy. 32, ca. 3 mi. N of Forest Ranch, near Forest Ranch Fire Control Station, ca. 50 ft. W of the Hwy., N of a dirt road 976 Comment
  CHSC43671  Sesbania punicea Vernon Oswald 1987-6-12 2998 Butte South side of the mouth of Big Chico Creek at the Sacramento River. 35 Comment
  SEINET10509037  Setaria geniculata Mary Susan Taylor 1977-10-10 Taylor 1509 Butte In drying irrigation ditch on S side of Crauch Rd, ca. 300 ft W of its junction with Lone Pine Ave, ca. 4 mi S of Chico. 30 Comment
  CHSC117417  Setaria parviflora B. Castro 2008-7-15 1758 Butte Sacramento Vallye. 2 mi W of Hwy 99 and 1 mi SE of Richvale, at NE corner of Cherokee Canal and Richvale Hwy. At levee toe just up from rice field. 32 Comment
  CHSC101804  Sherardia arvensis Lowell Ahart 2009-6-12 15850 Butte At Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  RSA325096  Sherardia arvensis M. S. Taylor 1981-5-1 3585 Butte E side of Hwy 70. Ca 4 air miles NW of Oroville. 91 Comment
  UC1013144  Sidalcea asprella C. L. Hitchcock 1952-5-28 19538 Butte 1/4 mi e Forbestown Comment
  JEPS127019  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. Comment
  CHSC3519  Sidalcea calycosa John Francis 1966-4-16 114 Butte 3.7 miles E. of covered bridge (Honey Run). Comment
  JEPS117413  Sidalcea glaucescens Lowell Ahart 2010-9-28 17246 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
  UC478500  Sidalcea glaucescens E. B. Copeland 1930-7-21 658 Butte Jonesville 1550 Comment
  CHSC13727  Sidalcea hartwegii J. G. Moore 1969-5-1 142 Butte Hwy. 32, 12 mi. e of Chico. Comment
  CHSC45945  Sidalcea hartwegii Lowell Ahart 1978-5-16 1734 Butte Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS93900  Sidalcea hartwegii Lowell Ahart 1998-6-9 7992 Butte about 7 air mi n of Oroville (about 300 yards w of the Ione oak tree, w of cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  HSC87160  Sidalcea hartwegii S. T. Heaston 1982-4-8 17 Butte SE of Chico, 7 mi. SE of the junction of Hwy. 99 and Skyway, 100 m S off of Skyway 305 Comment
  SBBG71494  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte Little Chico Crk Comment
  SEINET10937541  Sidalcea hartwegii Mary Susan Taylor 1980-4-27 Taylor 2570 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC31759  Sidalcea hirsuta L. Ahart 1978-5-15 1723 Butte Peter Ahart Ranch, Honcut. 50 Comment
  HSC38066  Sidalcea malviflora Thomas W. Nelson, Jane Nelson 1976-5-10 2474 Butte Beside Hwy. 191, 4 mi. W of Paradise Comment
  POM61850  Sidalcea robusta A. A. Heller, H. E. Brown 1902-5-8 s.n. Butte Berry Canyon (near Clear Creek). Comment
  POM84694  Sidalcea robusta C. C. Bruce 1898-05 2390 Butte Forest Ranch Comment
  UC727036  Sidalcea robusta A. A. Heller 1941-5-9 16108 Butte steep roadside bank on the Clark Road about a mi above old Clear Creek Post Office; mi above site of old Clear Creek Post Office Comment
  CHSC40792  Silene antirrhina Lowell Ahart 1985-5-31 5032 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
  CHSC37280  Silene bernardina M. S. Taylor 1982-8-16 5000 Butte Along road from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. 1706 Comment
  CHSC212  Silene bridgesii V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  CHSC44146  Silene occidentalis subsp. longistipitata Vernon H. Oswald 1988-8-3 3658 Butte Ca. 50 ft e of Willow Creek at the Butte-Tehama county line n of Jonesville. 1554 Comment
  SEINET5571531  Silybum marianum H. S. Gentry, S. Koch 1962-1 19786 Butte Near Richvale. Comment
  CDA3903  Sinapis alba L. Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC50404  Sisymbrium altissimum Vernon Oswald 1990-6-10 4287 Butte Hwy 32 at Lomo (jct. Humboldt Rd to Butte Meadows). On the west edge of the pullout on Hwy 32. 1158 Comment
  SEINET10874424  Sisymbrium officinale Mary Susan Taylor 1974-4-28 Taylor 211 B Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CHSC33224  Sisymbrium orientale R. E. Preston 1981-6-2 81 Butte At roadside. On s side of Hwy 70 across from power company rest area, ca. 38 km nne of Oroville. 488 Comment
  SEINET10507628  Sitanion hystrix Lowell Ahart 1985-6-30 Ahart 5091 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  CDA42899  Solanum americanum L. Ahart 2012-6-14 18185 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC26639  Solanum americanum M. S. Taylor 1977-6-12 1531 Butte In Devils Kitchen, on s side of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC42428  Solanum americanum Lowell Ahart 1987-5-27 5687 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
  CHSC94570  Solanum americanum Lowell Ahart 2006-9-11 13296 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
  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
  UCD126976  Solanum parishii R. R. Kehlor 1951-3-10 12 Butte J.M. Kehlor Ranch, 6.25 miles east of Oroville. Comment
  CHSC30665  Solidago canadensis subsp. elongata M. S. Taylor; R. Schlising 1980-7-6 3072 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma. 1127 Comment
  JEPS107558  Solidago velutina subsp. californica Lowell Ahart 2005-8-19 12335 Butte In a farmed field, along a small drainage, about 1/8 mile west of Dunstone Drive, about 1 1/2 miles north and 2 7/8 miles east of Honcut, about 12 miles (air) southeast of Oroville 54 Comment
  JEPS18175  Soliva sessilis Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5607 Butte along Oroville-Concow road 2.8 mi below junction Yankee Hill Road 373 Comment
  JEPS94143  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte ca. 7 mi. (air) n. Oroville (in tracks of dirt rd. ca. 5.8 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  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
  CAS-BOT-BC157207  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek Comment
  CDA26430  Sorbus scopulina C. Browning 1970-9-9 Butte Jonesville. 0 Comment
  SEINET10483618  Sorbus scopulina var. cascadensis Lowell Ahart 1983-8-16 Ahart 4300 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC34789  Sorghum halepense M. S. Taylor 1977-11-10 1510 Butte In irrigation ditch on s side of Crouch Rd, ca. 300 ft w of its jct with Lone Pine Ave, ca. 4 mi s of Chico. 30 Comment
  CHSC66465  Sorghum halepense Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .2 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC76432  Sorghum halepense Lowell Ahart 1999-10-28 8318 Butte On the east margin of the river, 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
  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
  CDA3448  Spergula arvensis subsp. arvensis L. Ahart 2000-5-23 8388 Butte About 100 yards southeast of the barn, about 1/4 mile northeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. Comment
  CHSC46353  Spergularia bocconi Lowell Ahart 1989-5-23 6244 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-BC390600  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC88165  Spiraea douglasii Lowell Ahart 2004-8-2 11331 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
  NY43529  Spiraea douglasii S. Bianco 1995-9-17 1028 Butte Near Camp Creek Rd, along Dogwood Creek 1098 Comment
  CHSC27261  Spiraea prunifolia P. Moyer 1972-3-11 125 Butte CSUC Campus. Foot of Citrus Ave. Bridge, n side of Chico Ck. 60 Comment
  CHSC43641  Stachys ajugoides var. rigida B. Castro 1987-5-18 95 Butte On w-facing hillside about 1/2 mi e of Hwy 32, ca 9 mi e of Chico via Hwy 32 and Altatina Dr. 451 Comment
  SEINET10498820  Stachys palustris subsp. pilosa Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4217 Butte T21N R5E nw sec 31. Ca. 2.5 mi w on Bloomer Hill Rd from Oroville-Quincy Hwy, ca. 13 mi n of Oroville. Foothill Woodland; 500 m. 500 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
  SEINET10499271  Stachys pycnantha Lowell Ahart 1983-9-17 Ahart 4428 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  UCD80405  Stachys rigida CNPS SN Foothill Team 2005-5-25 SNFN 0170 b Butte City of Chico, about 300 m south of northern boundary of Upper Bidwell Park, on the east side of Big Chico Creek. 278 Comment
  CHSC42243  Stachys stricta L. P. Janeway 1986-10-19 1942 Butte Along Table Mtn Rd ca 0.7 mi NW of Garden Dr. and at base of RR fill slope; overlooking Thermalito Forebay. 91 Comment
  UC600630  Stellaria borealis subsp. sitchana E. B. Copeland 1930-7-4 Butte Jonesville Comment
  CAS-BOT-BC181379  Stellaria calycantha V. Oswald; L. Ahart 1988-10-6 3706 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow 1889 Comment
  CHSC46825  Stellaria crispa R. A. Schlising; P. F. Broyles 1988-7-3 4569 Butte SE of Stirling City near 'Rag Dump' area, where road crosses Fall Creek. 1158 Comment
  CHSC54435  Stellaria crispa Vernon H. Oswald; Lowell Ahart 1991-7-15 4737 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd) at Jordan Creek, east of Oroville-Quincy Hwy, ca. 5.75 miles (air) northeast of Brush Creek. 1082 Comment
  SEINET10965515  Stellaria longipes Mary Susan Taylor 1981-5-14 Taylor 3729 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  UCD99315  Stellaria longipes subsp. longipes E. B. Copeland Jun and Jul 1931 s.n. Butte Jonesville. 1500 Comment
  CHSC107231  Stellaria media Lowell Ahart 2011-6-3 17361 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. 60 Comment
  CAS-BOT-BC395119  Stellaria nitens G. A. Fischer 1929-6-28 63 Butte Chico Meadows, Lassen Forest 1341 Comment
  CHSC48281  Stellaria obtusa Vernon Oswald 1987-7-29 3160 Butte Near Coon Hollow Rd. at the W. Branch of the Feather River, ca. 2.5 mi (air) n of Philbrook Reservoir. On the edge of a small backwater of the river. 1621 Comment
  CHSC46558  Stellaria umbellata V. Oswald; L. Ahart 1989-7-21 3876 Butte Southwest branch of upper Butte Creek, ca. 0.7 mi (air) se of Summit Lake, ca. 4.5 mi (air) se of Jonesville. On the edge of the creek. 1828 Comment
  SEINET10506968  Stipa Mary Susan Taylor 1978-5-6 Taylor 1576 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET10603864  Stipa lemmonii Lowell Ahart 1988-6-21 Ahart 6058 Butte Lemmon's Stipa. On dry red bare rocky soil, along Poe Power House Road, about 3/4 mile North of the Poe Power House, abou 11/4 miles South-east of Jarbo Gap, California. Yellow Pine Forest. Uncommon. 427 Comment
  CAS-BOT-BC87387  Streptanthus longisiliquus Lowell Ahart 1983-8-16 4283 Butte Sierra Nevada. Along edge of Humboldt Road, about 3 miles southwest of butte Meadows. 1450 Comment
  CAS-BOT-BC87428  Streptanthus polygaloides John Thomas Howell 1955-6-14 30460 Butte Sierra Nevada. Magalia. 731 Comment
  HSC96685  Streptanthus polygaloides L. P. Janeway 2006-5-28 8639 Butte N High Sierra Nevada, W side of Concow Rd., 3.2 mi. NE of upper end of Concow Reservoir 860 Comment
  HSC96718  Streptanthus polygaloides L. P. Janeway 2006-5-28 8648 Butte N Sierra Nevada Foothills, W side of Lunt Rd., 1 km SW of Hwy. 70 495 Comment
  POM117399  Streptanthus polygaloides C. C. Bruce 1897-04 1942 Butte Nelson s bar. 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
  HSC32398  Streptanthus tortuosus Kitsy Kelly 1974-4-20 28 Butte Table Mtn. Volcanic area Comment
  CHSC61357  Streptopus amplexifolius var. americanus Lowell Ahart 1993-7-22 7088 Butte West of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET5505734 Image available Styrax officinalis var. californicus Margaret J. Williams, Wayne Roderick 1984-1 84- 23 -2 Butte Feather River Canyon, Hwy. 70, 1.5 mi. west of Poe Power Dam 457 Comment
  CAS-BOT-BC48057  Styrax redivivus M. S. Taylor 1982-5-23 4511 Butte S side of Hwy 70, near Arch Rock Tunnel, ca. 1/2 mi sw of Butte-Plumas county line. Pulga SW quad. 487 Comment
  SEINET5733507 Image available Styrax redivivus Michael A. Walker 1974-1 19 Butte State Hwy 70, 5 mi. S of Arch Rock Tunnel.; Arch Rock Tunnel Comment
  UCD99541  Suaeda calceoliformis William Anderson 1959-10-7 s.n. Butte Edge of dike along West Liberty Road, Gray Lodge Wildlife Management Area, Gridley. 365 Comment
  SD4985  Symphoricarpos acutus E. B. Copeland 1930-7-7 Butte Jonesville. 1600 Comment
  CAS-BOT-BC234614  Symphoricarpos mollis E. B. Copeland 1930-7-7 s.n. Butte Jonesville 1600 Comment
  CAS-BOT-BC99045  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  UC179692  Symphyotrichum spathulatum A. A. Heller 1914-9-3 11760 Butte 6 mi from, (on the Chico-Hamilton rd) Chico Comment
  CAS-BOT-BC98370  Symphyotrichum subulatum var. parviflorum John Thomas Howell 1959-9-20 34647 Butte Lower foothills, eastern outskirts of Oroville - Sierra Nevada 60 Comment
  CHSC116325  Symphyotrichum subulatum var. parviflorum Lowell Ahart 2015-10-16 20553 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC109596  Taraxacum officinale Lowell Ahart 2012-5-14 18047 Butte Along the edges of the paved road, a little west of Table 9, east of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  JEPS115243  Taraxacum officinale Lowell Ahart 2009-4-3 15522 Butte On the east side and along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC376889  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scotts John Rd, ca. .3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville 1828 Comment
  CHSC19951  Tauschia hartwegii M. S. Taylor 1975-3-3 404 Butte Ca. 1/4 mi n of Richardson Springs camp, ca. 8 mi n of Chico. 91 Comment
  POM82504  Tauschia hartwegii C. C. Bruce 1897-05 2061 Butte Near Chico. Comment
  CHSC32736  Tauschia kelloggii M. S. Taylor 1981-4-8 3517 Butte Between Ponderosa Way (Rim