Search Results — 2000 specimen records retrieved (1590 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
  UC600583  Abies concolor H. F. Copeland 1931-6-9 Butte Jonesville Jonesville (at edge of swamp) 1500 Comment
  CHSC3625  Acacia decurrens John Francis 1966-2-27 35 Butte Arcadian and W. Francis Willard Avenues, Chico. Comment
  CHSC91  Acer circinatum 1935-4-1 Butte West Branch on Deer Cr. Road 762 Comment
  CHSC103159  Acer macrophyllum Lowell Ahart 2009-11-19 16550 Butte On the east edge of Big Chico Creek, about 15 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 181 Comment
  RSA30419  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek 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
  CAS-BOT-BC21701  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  CAS-BOT-BC21704  Achillea millefolium A. A. Heller 1917-7-26 s.n. Butte Butte Meadows 1402 Comment
  SEINET10475101  Achillea millefolium var. californica Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4225 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CDA13244  Achnatherum lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13091 Butte Plumas National Forest; Occasional perennial in open sites at edges of and in understory of conifer forest. Near Old Railroad Grade Rd., Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  CHSC42446  Achnatherum lemmonii Lowell Ahart 1987-5-22 5663 Butte About 1/4 mile south-east of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UCD50598  Achnatherum lemmonii Elizabeth Wilson 1940-6-21 s.n. Butte Butte County, near De Sabla, California. Comment
  UC600788  Achnatherum occidentale subsp. californicum H. F. Copeland 1932-8-17 Butte at the summit Jonesville 2000 Comment
  UC1485925  Achnatherum stillmanii Lowell Ahart 1980-9-10 2626 Butte ca. 0.1 mi e Little Bald Rock (ne of Oroville) 1100 Comment
  CHSC6686  Achyrachaena mollis Marilyn Lee 1968-4-19 136 Butte Field on W. side of Cherokee Road, Table Mt. Comment
  CHSC116583  Acmispon americanus var. americanus L. P. Janeway 2015-7-20 11804 Butte Northern High Sierra Nevada. Plumas Nastional Forest; Forest Service rock quarry at the southern corner of Walker Plains, on the southwest side of Oroville-Quincy Hwy. 1539 Comment
  CHSC26746  Acmispon americanus var. americanus M. S. Taylor; M. Hayes 1977-8-16 1440 Butte On both sides of Williams Rd, ca. 1/2 mi n of its jct with Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 60 Comment
  HSC104010  Acmispon americanus var. americanus L. Ahart 2013-11-18 19282 Butte About 2.5 air mi. NE of Hurleton, below the high water line of Lake Oroville, ~150 yds. NE of the boat ramp at the end of Stringtown Rd.,~ 50 yds. north of the road 261 Comment
  JEPS121914  Acmispon americanus var. americanus Lowell Ahart 2014-7-10 19625 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS122339  Acmispon americanus var. americanus Lowell Ahart 2014-8-24 19726 Butte On the south side of the road, about 50 yards west of the Woodleaf Creek, about 1/2 mile southwest of Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  CHSC43416  Acmispon brachycarpus Lowell Ahart 1977-4-28 1322 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, about 4 miles north-west of Forbestown. 457 Comment
  JEPS120584  Acmispon brachycarpus Lowell Ahart 2013-11-18 19281 Butte Below the high-water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2.5 air miles northeast of Hurleton. Comment
  CHSC40417  Acmispon nevadensis Lowell Ahart 1985-5-31 5039 Butte At the Enterprise Launch Area, about 3/4 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC98960  Acmispon parviflorus Lowell Ahart 2008-5-12 14733 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  UC726096  Aconitum columbianum A. A. Heller 1928-6-28 14653 Butte Butte Meadows Comment
  CHSC36077  Actaea rubra R. A. Schlising 1982-6-10 4292 Butte N of Paradise and Magalia at old Powellton site; forest along Kanaka Creek. 1097 Comment
  CAS-BOT-BC29924  Adenocaulon bicolor E. B. Copeland 1930-8-9 483 Butte Jonesville 1500 Comment
  CHSC21827  Adiantum jordanii B. L. Wiley 1975-4-4 5 Butte Ca. 100 yds s of Butte Creek and 0.4 mi w of Covered Bridge, 6.4 mi ese of Chico. 115 Comment
  UC1481811  Adiantum jordanii Mrs. Carlotta C. Hall 1914-7-17 9760 Butte near Chico and Paradise (Honeyrun Grade) Comment
  HSC103928  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Plumas National Forest; along Oroville-Quincy Hwy., 5.6 road km N of the bridge over Canyon Creek arm of Lake Oroville 357 Comment
  JEPS110293  Aegilops triuncialis Lowell Ahart 2006-6-9 12640 Butte Along the south side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga 534 Comment
  CHSC77485  Aesculus californica Tim Stofer 1997-4-9 1 Butte Located on the creek side, 100 ft. from the entrance of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CAS-BOT-BC295534  Agnorhiza bolanderi Mrs. J. H. Morrison 1932-4-9 s.n. Butte Durham Comment
  UC600719  Agoseris aurantiaca var. aurantiaca H. F. Copeland 1932-8-19 Butte woods near the head Butte Creek; Jonesville 1800 Comment
  CHSC71255  Agoseris heterophylla var. cryptopleura Lowell Ahart 1998-7-1 8024 Butte About 1/2 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
Read comments
Jan 19 2011
  POM33404  Agoseris heterophylla var. heterophylla C. C. Bruce 1898-05 s.n. Butte [No locality information provided] Comment
  SEINET10509386  Agropyron intermedium var. trichophorum Mary Susan Taylor 1978-7-21 Taylor 1835 Butte Big Bald Rock, ca. 2 mi E of Lake Madrone, ca. 10 mi NE of Oroville; Yellow Pine Forest, granite soils. 998 Comment
  CHSC66171  Agrostis avenacea Vernon H. Oswald; Lowell Ahart 1996-5-27 7663 .1 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At the SW corner of Tract 3.4, Sanctuary II of Sacramento River National Wildlife Refuge, Llano Seco Unit. 32 Comment
  CAS-BOT-BC127337  Agrostis exarata Lowell Ahart 1977-7-8 1522 Butte Peter Ahart Ranch, Honcut. On the edge of North Honcut Creek. 50 Comment
  UCD52297  Agrostis exarata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  SEINET10790024  Agrostis exarata Lowell Ahart 1990-5-21 Ahart 6475 Butte About 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. Spike Bentgrass. 30 Comment
  CAS-BOT-BC139717  Agrostis gigantea John Thomas Howell 1961-9-22 36709 Butte Sierra Nevada. Bank of Feather River, Oroville. 53 Comment
  SACT000132  Agrostis hyemalis Herbert Copeland 1935-7-25 Butte 1500.0 Comment
  SEINET10876406  Agrostis hyemalis A. Arthur Heller 1917-7-26 Heller 12847 Butte Moist shaded places in the yellow pine forest, Butte Measow. 1280 Comment
  CHSC103938  Agrostis microphylla Lowell Ahart 2010-5-16 16700 A Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC6694  Agrostis microphylla Marilyn Lee 1968-4-19 139 Butte On W side of Cherokee Road, Table Mt. Comment
  CAS-BOT-BC139078  Agrostis pallens Lowell Ahart 1983-6-21 4091 Butte Along Bloomer Hill Road, about 1.25 mile west of the Oroville Quincy Highway, about 15 miles northeast of Oroville. 450 Comment
  CAS-BOT-BC139081  Agrostis pallens Lowell Ahart 1980-7-4 2462 Butte Along Forbestown Road. 750 Comment
  CHSC96813  Agrostis pallens Lowell Ahart 2007-5-29 13965 Butte Seep on the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, 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. 585 Comment
  JEPS98495  Agrostis pallens Lowell Ahart 2000-6-27 8517 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  CHSC43180  Agrostis scabra Robert Banchero 1981-7-19 614 Butte Big Crane Valley. 1584 Comment
  UCSB63780  Agrostis stolonifera Ahart, Lowell 1998-7-18 Butte SW of lone oak tree, W of cow chute on W side of Cherokee Rd; North Table Mtn, about 7 mi N of Oroville by air 403 Comment
  CHSC113417  Agrostis thurberiana Lowell Ahart 2014-7-10 19618 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC43175  Agrostis variabilis Robert Banchero 1981-7-18 600 Butte Butte Creek House, ca 3 air miles ne of Jonesville. 1755 Comment
  SACT000179  Aira caespitosa Herbert Copeland 1930-7-25 Butte Tall clumps, in meadow below cabin Comment
  CHSC39616  Aira caryophyllea Lowell Ahart 1983-4-1 3913 Butte Along the edge of old Highway 40, near the end of the road where it runs into Lake Oroville, about 4 miles south of Jarbo Gap. 350 Comment
  CAS-BOT-BC138410  Aira caryophyllea var. capillaris Lowell Ahart 1980-5-17 2289 Butte 0.5 mile southeast of Hurleton. 600 Comment
  RSA0058867  Albizia julibrissin Lowell A. Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 31 Comment
  SEINET10483793  Alchemilla occidentalis Mary Susan Taylor 1980-4-6 Taylor 2440 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
  CHSC117325  Alisma lanceolatum B. Castro 2008-7-15 1769 Butte Sacramento Valley. 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 jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension Canal along edge of rice field in adjacent ditch. 31 Comment
  CHSC46618  Alisma lanceolatum Vernon H. Oswald 1988-8-5 3618 Butte Butte Community College, near the intersection of Durham-Pentz Rd and Clark Rd (Hwy 191). 85 Comment
  CAS-BOT-BC445315  Alisma lanceolatum Lowell Ahart 1974-5-28 s.n. Butte 1/2 mi. west on Central House Road, Honcut. 150 Comment
  CHSC37659  Alisma plantago-aquatica T. B. Devine 1981-8-31 763 Butte Robbers Gulch through Butte Creek Country Club Golf Course, Chico. 57 Comment
  CHSC36905  Allium amplectens R. A. Schlising; L. Ahart 1980-5-24 3600 Butte NE of Honcut, southern Butte Co., at Ahart Ranch, at North Honcut Creek. Comment
  CAS-BOT-BC460728  Allium amplectens Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC460731  Allium amplectens H. E. Brown 1897-4-15 172 Butte Near Clear Creek Comment
  SEINET12046811  Allium amplectens D. D. Schultz 1975-1 10 Butte .9 mi N of intersection of Bruce Rd. and E. Park Ave 70 Comment
  CHSC46523  Allium cratericola Lowell Ahart; Jim Jokerst 1985-3-24 4863 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 518 Comment
  SEINET12046121  Allium howellii J. D. Mott 1978-1 19 Butte .5 mi E of Monk's store, Cohasset Stage Comment
  JEPS122449  Allium hyalinum L. P. Janeway 2015-3-29 11643 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. Quad: Oroville 7.5'. Comment
  CAS-BOT-BC135816  Allium jepsonii L. P. Janeway 1993-7-2 4423 Butte Along Rd 22N84 0.45 mi west of Stony Creek and 1.45 mi west of Rd 23N28 (the road from Swayne HIll to Big Bar Mtn.) - Plumas National Forest, Oroville Ranger District 926 Comment
  CHSC37129  Allium membranaceum R. A. Schlising 1980-6-17 3742 Butte Paradise Lake, n of Magalia; ne corner of lake. 731 Comment
  JEPS113291  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  CHSC36951  Allium peninsulare Richard J. Slama 1981-4-20 7 Butte On s rim of canyon, ca. 7 mi. se of Chico, ca. 5 mi. e of hwy. 99 on Skyway rd. 243 Comment
  CHSC27982  Allium platycaule M. S. Taylor 1978-7-18 1709 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  CHSC89465  Allium sanbornii var. sanbornii R. D. Fischer 2004-7-18 448 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Located along Big Chico Creek, E side, at S end of BCCER. 400 ft N of gated end of Bidwell Park. 227 Comment
  CHSC27033  Allophyllum divaricatum Robert A. Schlising 1978-6-11 3291 Butte Along Cohasset Rd, below Cohasset, 5.5 mi NE of crossing of Mud Cr and 5.3 mi NE jct of rd to Richardson's Springs; ridge top. Comment
  UC1586630  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte n. of Springtown Rd. Lake Oroville 243 Comment
  RSA325885  Allophyllum divaricatum L. Ahart, P. Ahart 1983-7-29 4258 Butte Ca. 3 mi e of Milsap Bar, ca. 25 mi ne of Oroville. 1100 Comment
  CHSC33344  Allotropa virgata R. Banchero; R. Schlising 1980-7-11 300 Butte 1.3 mi s of Four Trees crossing, 2 mi nw of Elk's Retreat. 1499 Comment
  CHSC113284  Alopecurus carolinianus Lowell Ahart 2014-4-25 19403 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale South Road and Richvale South Highway, Richvale. 30 Comment
  CHSC49849  Alopecurus carolinianus Vernon Oswald 1990-4-4 4144 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. 262 Comment
  RSA0118722  Alopecurus carolinianus Lowell A. Ahart 2014-4-16 19368 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  SEINET10790510  Alopecurus carolinianus Lowell Ahart 1990-4-15 Ahart 6450 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. T19N R6E nw/S6. Foothill woodland (destroyed). Carolina Foxtail. 290 Comment
  SEINET10967771  Alopecurus carolinianus Lowell Ahart 1978-4-21 Ahart s.n. Butte Peter Ahart Ranch, Honcut. 50 Comment
  UCD169922  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte North Table Mountian, about 1/4 mile south of the parking area. About 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC96932  Amaranthus albus Lowell Ahart 2007-6-3 13973 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  JEPS124158  Amaranthus californicus Lowell Ahart 2015-11-7 20616 Butte About 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. Comment
  JEPS124258  Amaranthus californicus Lowell Ahart 2015-10-26 20589 Butte About 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  CHSC85744  Amaranthus hybridus T. Gantenbein 1999-8-11 1198787 Butte Along rice field levee, Richvale. Comment
  SEINET11268217  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte Along the north side of Durham Pentz Road, about 1/10 mi west of Butte Creek, about 1/10 mile east of Durham.; 0 49 Comment
  CHSC31525  Amaranthus retroflexus L. Ahart 1977-11-20 1585 Butte On dry soil near our garden. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC92456  Amaranthus retroflexus Lowell Ahart 2005-11-13 12490 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UCD105585  Amaranthus retroflexus L. Ahart 1982-10-11 3850 Butte N of check-in station, Graylodge Wildlife Refuge, ca. 12 miles sw of Gridley. 35 Comment
  CHSC21175  Ambrosia psilostachya M. S. Taylor 1975-10-29 977 Butte Ca. 10 ft S of Humbug Rd, ca. 4 mi E of junc of the Skyway and Humbug Rd. Comment
  CHSC45625  Ambrosia psilostachya Vernon Oswald 1987-8-9 3195 Butte Hwy 32 N of Forest Ranch at the 35.0 mi road marker, 3 mi S of Lomo. 1158 Comment
  JEPS115043  Ambrosia psilostachya Lowell Ahart 2007-10-30 14509 Butte On the south side of the water ditch, on the north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville 129 Comment
  SEINET10452827  Ammannia auriculata Mary Susan Taylor 1978-7-22 Taylor 1851 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  CHSC113529  Ammannia coccinea Lowell Ahart 2014-9-23 19867 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
  CHSC42098  Ammannia coccinea Lowell Ahart 1986-11-9 5442 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1.4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC21278  Amsinckia intermedia M. S. Taylor 1974-2-19 39 Butte In fields above and slightly n of Salmon Hole ca. 300 yds e of Upper Bidwell Park Road and ca. 4 mi n of Chico Municipal Golf Course building. 182 Comment
  CHSC3188  Amsinckia intermedia Dona Kingsford 1966-3-3 Butte 1.3 miles south west of Hooker Oak Tree in a dry open field, Chico. Comment
  CHSC90931  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UC725509  Amsinckia lycopsoides A. A. Heller 1930-3-23 15356 Butte grade toward Paradise just beyond Pentz Comment
  RSA0089989  Amsinckia parviflora A. A. Heller 1938-4-22 s.n. Butte Along U.S. Highway #99E near the junction with the Cana road. 76 Comment
  CHSC3312  Anagallis arvensis M. Gregg 1966-3-21 52 Butte On Pentz Rd. approx. 1 mile east of Clark Rd. At a pond at the foot of the hill. Comment
  CHSC82568  Anagallis arvensis Tara Morgan 2002-5-7 59 Butte Within the Yankee Hill area on the east side of Oroville Lake and Highway 70 within a burn area from the 2001 Yankee Hill Fire. 549 Comment
  CAS-BOT-BC45251  Ancistrocarphus filagineus A. A. Heller; H. E. Brown 1902-5-12 5535 Butte Grade between Clear Creek and Paradise Comment
  POM33358  Ancistrocarphus filagineus C. C. Bruce 1897-06 2111 Butte Fields Comment
  CAS-BOT-BC391993  Anemone oregana Lowell Ahart 1982-9-13 3829 Butte Along Pinkard Creek, about 1/8 mile north of the Lost Creek Res. Dam, about 2 and 1/8 miles north-west of Strawberry Valley 1100 Comment
  CHSC31898  Anethum graveolens L. Ahart 1975-7-7 854 Butte In garden on good soil; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC42563  Angelica breweri Vernon Oswald 1983-8-17 991 Butte Trail between Humboldt Summit and Humboldt Peak, n-e of Jonesville. 2023 Comment
  CHSC61625  Angelica breweri Lowell Ahart 1993-9-8 7174 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  JEPS87517  Anisocarpus madioides Lowell Ahart 1993-6-16 6971 Butte sw intersection of Black Bart Road and Forbestown Road (about 3 1/2 air mi sw of Forbestown) 609 Comment
  CAS-BOT-BC84692  Anthemis cotula Lowell Ahart 1987-5-27 5710 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC51276  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 266 Comment
  RSA0058879  Antirrhinum leptaleum Lowell A. Ahart 2008-7-23 15154 Butte On the 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. 514 Comment
  UC1563259  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville 266 Comment
  CHSC39235  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5217 Butte Vicinity of mouth of Flag Canyon. On top pf North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC32150  Aphyllon epigalium subsp. epigalium L. Ahart 1970-5-19 55 Butte Along Doon Grade, near Paradise. 762 Comment
  CHSC114984  Aphyllon purpureum Lowell Ahart 2015-4-18 20056 Butte About 100 yards south of the intersection of Forbestown Road and Black Bart Road, about 3 miles (air) southwest of Forbestown, about 11 miles (air) eastof Oroville. 752 Comment
  CHSC51049  Apocynum androsaemifolium Pauleen Broyles 1987-5-21 1042 Butte Bike path N and S of Elliott Road, in Paradise. Comment
  CHSC38260  Apocynum cannabinum Vernon Oswald 1983-6-2 604 Butte Upper Bidwell Park, Chico, at the e end of Yahi Trail. 207 Comment
  CHSC27919  Aquilegia formosa var. truncata M. S. Taylor 1978-7-18 1718 Butte On top of Humboldt Peak at Humboldt Summit, on Butte Co and Tehama Co line. 2158 Comment
  CHSC52684  Aquilegia formosa var. truncata Kirsten Tarp 1983-8-6 337 Butte 0.2 mi from jct of Bull Hill Rd. with Humboldt Rd. on Bull Hill Rd., near Butte Meadows. 1325 Comment
  LA210043  Arabis glabra var. glabra E. B. Copeland; 1929-7-29 Butte Jonesville 1550.0 Comment
  UC600707  Arabis rectissima var. rectissima H. F. Copeland 1931-6-10 1518 Butte gulch draining into Colby Canyon Jonesville 1524 Comment
  SEINET10454396  Aralia californica Mary Susan Taylor 1979-10-5 Taylor 2227 Butte T23N R4E sec 18. SE side of Paradise Lake (from picnic area to first creek coming into lake, along road), ca. 0.5 mi N of Coutolenc Rd, ca. 5 mi N of Magalia. 732 Comment
  CHSC43499  Arbutus menziesii Lowell Ahart 1977-4-28 1327 Butte Along Ponderosa Way, near the Ponderosa Dam, about 4 miles north of Forbestown. 365 Comment
  SBBG17292  Arbutus menziesii M. Vincent 1961-3-30 Butte Spense Rd near cross street Pearson Comment
  UC463034  Arceuthobium campylopodum E. B. Copeland 1931-8-5 Butte Jonesville 1500 Comment
  SEINET10969532  Arceuthobium campylopodum Mary Susan Taylor 1975-9-19 Taylor 911 Butte Ca. 0.5 mi N of Magalia, ca. 50 ft E of Skyway; serpentine area surrounded by Yellow Pine Forest. 610 Comment
  SEINET11986400  Arctostaphylos manzanita Unknown 1977-1 15 Butte 16 mi NW of Chico on Cohasset Rd 10 yds W of roadside rocky soil 518 Comment
  CAS-BOT-BC24298  Arctostaphylos mewukka A. A. Heller 1928-2-22 14476 Butte Near Forest Ranch Comment
  CAS-BOT-BC24300  Arctostaphylos mewukka Lowell Ahart 1975-4-1 s.n. Butte Near Forbestown. 457 Comment
  SD60287  Arctostaphylos mewukka A. A. Heller 1928-2-27 14477 Butte Near Forest Ranch Comment
  UC726645  Arctostaphylos mewukka A. A. Heller 1940-2-19 15501 Butte Neal Rd w Optimo Lodge (e of Paradise, along roadside) 670 Comment
  SEINET10973496  Arctostaphylos mewukka Mary Susan Taylor 1975-9-12 Taylor 910 Butte Yellow Pine Forest, ca. 24 mi NE of Chico, ca. 500 m W of Hwy 32; with Torreya californica, Ceanothus prostratus. 1067 Comment
  JEPS118643  Arctostaphylos mewukka subsp. truei B. Castro and L. P. Janeway 2002-7-20 1379 Butte Northern High Sierra Nevada. Flat-topped knoll on E side of Lumpkin Ridge Road 1.3 mi E of the old Camp 18 site, and 0.2 mi SW of junction with USFS Rd 22N24 (which goes N and crosses Fall River). Comment
  UC481538  Arctostaphylos nevadensis H. F. Copeland 1930-7-28 Butte along So. Willow Creek Jonesville 1828 Comment
  UC535024  Arctostaphylos patula H. F. Copeland 1932-6-29 A 7 Butte The Summit Jonesville Comment
  SEINET10449336  Arctostaphylos viscida Mary Susan Taylor 1976-4-24 Taylor 1074 Butte Abundant on Big Bald Rock, ca. one quarter mi W of Bald Rock Rd, ca. 3 mi E of Lake Madrone, ca. 13 mi NE of Orovil le; with Quercus chrysolepis. 998 Comment
  CAS-BOT-BC48286  Arctostaphylos viscida subsp. viscida C. R. Quick 1941-7-23 41 -17 Butte Big Bar Mt. Meadow Comment
  CHSC21776  Arctostaphylos viscida subsp. viscida Robert A. Schlising 1974-9-17 3158 Butte Along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico. Comment
  CHSC78553  Aristida dichotoma Lowell Ahart; Vernon H. Oswald 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  UCD56450  Aristida oligantha L. Ahart 1977-7-14 1464 Butte Honcut, Peter Ahart Ranch. 50 Comment
  CHSC115  Aristolochia californica F. Roos 1930-3-16 Butte On Oroville road near Chico. 76 Comment
  CHSC28870  Aristolochia californica M. S. Taylor 1980-2-17 2359 Butte Along a dirt road, ca. 1/4 mi sw of lower Forbestown Rd, ca. 3 mi w of Forbestown. 396 Comment
  CAS-BOT-BC295843  Arnica dealbata Clarence R. Quick 1966-7-9 66 -46 Butte 50 yds. s. of campsite, Section Corner Meadow, Coyote Gap-Four Trees road, ca. 5 m. east of Pulga 1463 Comment
  CHSC113435  Arnica discoidea Lowell Ahart 2014-7-7 19568 Butte Along the east side of the Skyway, about one-mile south of Inskip. 1449 Comment
  CAS-BOT-BC400631  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC47042  Asarum lemmonii R. A. Schlising; F. J. Fuller 1986-7-18 4489 Butte NE of village of Feather Falls, along road to Fall River Campground. 1066 Comment
  RSA401660B  Asclepias cordifolia M. Vincent 1962-4-19 212 Butte Humbug Road, 3 miles northeast of Centerville Comment
  UC600678  Asclepias cordifolia E. B. Copeland July, 1930 Butte Jonesville 1600 Comment
  CHSC31548  Asclepias eriocarpa L. Ahart 1975-6-19 789 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC24784  Aspidotis californica C. E. Stopher 1976-3-28 14 Butte 4.8 km nw of Forest Ranch in Chico Creek Canyon on Ponderosa Way Truck Trail. 2 m from e side of road. 762 Comment
  CHSC39502  Aspidotis californica Lowell Ahart 1983-5-28 4023 Butte About 1/4 mile south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls. 600 Comment
  CHSC86073  Aspidotis californica R. D. Fischer 2004-1-4 44 Butte Sierra Nevada foothills within upper Bidwell Park in Chico. Along the Yahi Trail above Brown's Hole. 213 Comment
  CAS-BOT-BC65909  Aspidotis densa E. B. Copeland 1929-7-13 328 Butte Jonesville 1700 Comment
  CHSC30745  Aspidotis densa M. S. Taylor 1980-5-27 2662 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC32620  Aspidotis densa M. S. Taylor; L. Hanson 1981-3-31 3459 Butte End of Spur rd, ca. 3/4 mi se of its jct with Ponderosa Way (Rim Rd, rd to Flea Valley) ca. 4 mi ne of its jct with Hwy 70 at Jarbo Gap, ca. 19 air mi n of Oroville. 914 Comment
  CHSC3983  Aspidotis densa E. P. Parreno 1967-3-30 Butte Only plant seen close to the water's edge of Lindo Channel ca. 350 yards upstream fron the Mun. Golf Course, Chico. Comment
  UC1609394  Aspidotis densa Lowell Ahart 1993-6-26 7038 Butte ca. 1 air mi nw Lost Creek Reservoir Dam (Jackass Flat, Mooreville Ridge); Jackass Flat, Mooreville Ridge 1158 Comment
  CDA10331  Aster oregonensis T. C. Fuller 1958-7-7 1912 Butte 1 mile north of Pulga Station. 0 Comment
  CDA10332  Aster oregonensis subsp. californicus T. C. Fuller 1962-7-12 9162 Butte East side of Pentz-Magalia Road just south of Merrill Road, 1.2 miles south of Magalia. 0 Comment
  CHSC109163  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  CHSC45903  Astragalus gambelianus Lowell Ahart 1981-4-24 2789 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC827  Astragalus gambelianus L. Nelson 1935-5-7 Butte Covered Bridge on Butte Creek. 108 Comment
  JEPS119766  Astragalus gambelianus Lowell Ahart 2012-5-12 18040 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  JEPS97430  Astragalus gambelianus Lowell Ahart 1995-5-30 7577 Butte 7 mi N of Oroville (North Table Mountain, along edge of dirt road, about 1/10 mi SE of reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  CAS-BOT-BC192802  Astragalus pauperculus Mrs. J. H. Morrison 1932-3-13 s.n. Butte Durham Comment
  UC204731  Astragalus pauperculus A. A. Heller 1914-4-13 11286 Butte Chico-Oroville road 11 mi from Chico; 11 mi from Chico Comment
  UC765009  Astragalus pauperculus R. F. Hoover 1938-4-24 3236 Butte 3 mi n Chico; n of Chico Comment
  SEINET10452232  Astragalus pauperculus Mary Susan Taylor 1984-4-6 Taylor 5410 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
  CHSC36961  Athyrium filix-femina var. cyclosorum M. S. Taylor 1982-8-16 5003 Butte Jct small creek and rd in High Rock Ravine, just s of Discovery Creek, ca. 4 air mi ne of Stirling City. 1463 Comment
  SD9771  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 326 Butte Jonesville 1600 Comment
  POM219647  Athysanus pusillus H. F. Copeland 1928-4-3 431 Butte Canyon of Butte Creek. Comment
  SEINET11935014  Atriplex heterosperma Unknown 1981-1 3221 Butte N side of rd near entrance to Gray Lodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of 35 Comment
  JEPS90627  Atriplex subtilis Dean W. Taylor 1993-8-31 14076 Butte 120 m s Rutherford Road (and (as depicted on the refuge map) public shooting parking lot no. 5, (Pennington 7 1/2 USGS quadrangle, 1973 edition), ca. 1.5 mi e of refuge hq.); Sacramento Valley, Gray Lodge State Wildlife Area (Westside 21 Comment
  CHSC100990  Avena barbata L. P. Janeway 2008-4-2 9246 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  SEINET10517553  Avena barbata Mary Susan Taylor 1980-3-1 Taylor 2327 Butte T21N R2E se 1/4 sec 15 and ne 1/4 sec 22. Hamlin Canyon quad. West end of Chico City Dump, on N side of Neal Rd, ca. 1 mi E of Hwy 99, ca. 7 mi S of Chico. 250 Comment
  CHSC46435  Avena fatua Lowell Ahart 1989-5-10 6217 Butte Near Lake Oroville, about 1/10 mile north-west of the West Branch Bridge across Lake Oroville. 289 Comment
  JEPS110442  Avena fatua Lowell Ahart 2005-12-11 12515 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs 30 Comment
  SEINET3823232 Image available Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction East Gridley Road and CA-70 (Honcut 7.5' Q) 23 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
  CHSC108318  Azolla microphylla Lowell Ahart 2011-8-17 17633 Butte On the west edge of the pond, on the east side of the trail and dam, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 249 Comment
  CHSC34140  Baccharis douglasii Lowell Ahart 1981-9-27 3215 Butte Ca. 3/4 mi NE of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 1/8 mi S of the ORO Bangor Hwy, ca. 5 mi NE of Palermo. 100 Comment
  CAS-BOT-BC98621  Baccharis pilularis unspecified 1929-11-1 s.n. Butte Cultivated at Chico U.S. Experimental Station Comment
  RSA276695  Bacopa repens J. M. Tucker 1953-8-28 2684 Butte Biggs Rice Experiment Station Comment
  SEINET10448247  Barbarea orthoceras Mary Susan Taylor 1975-8-31 Taylor 892 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
  CHSC42510  Barbarea verna Lowell Ahart 1987-5-6 5565 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  HSC96972  Bergia texana L. Ahart 2006-8-5 13083 Butte Peter Ahart Ranch, ca. 1.5 mi. N and 300 yards E of Honcut, ca. 12 mi. S of Oroville. 30 Comment
  CHSC38730  Berula erecta Vernon Oswald 1983-6-14 678 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 134 Comment
  CHSC28384  Bidens frondosa J. D. Jokerst 1979-10-13 384 Butte Intersection of Concow Cr. and Jordan Hill Rd., 0.8 mi W of Concow Rd. Comment
  CHSC44048  Bistorta bistortoides L. P. Janeway 1987-6-26 2322 Butte SW end of Logue Meadows. 1325 Comment
  CAS-BOT-BC100689  Blennosperma nanum var. nanum H. E. Brown 1897-4-15 146 1/2 Butte near Clear Creek 53 Comment
  CAS-BOT-BC100691  Blennosperma nanum var. nanum Carl B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 1/2 mi. SE. of Butte Creek on Chico - Oroville Road 57 Comment
  HSC43098  Blennosperma nanum var. nanum Maralyn O'Meara 1974-4-20 302 Butte Table Mtn. 305 Comment
  CHSC46283  Boechera arcuata Vernon Oswald 1989-5-25 3785 Butte Railroad between Pulga and Mayaro. On the river side of the RR between Dogwood and Camp Creeks. 438 Comment
  UC855524  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte summit above Jonesville 2133 Comment
  SEINET10453130  Boisduvalia densiflora Mary Susan Taylor 1980-8-30 Taylor 3320 Butte T20N R4E sw sec 14, Oroville Dam quad. E Table Mt, along dry vernal creek bed, between Box Hall Flat and Potter Ravine, ca. 2.5 air mi E of Oregon City, ca. 5.5 mi N of Oroville. 366 Comment
  SEINET10939932  Boisduvalia densiflora Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4120 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CAS-BOT-BC28203  Bolboschoenus glaucus Verne Grant; Herbert L. Mason 1956-8-7 12291 Butte Gridley Road north of Butte Sink Comment
  CAS-BOT-BC31373  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12731 Butte Gray Lodge Game Refuge, NW of Pennington. Comment
  UC1127178  Boykinia major P. L. Johannsen 1936-7-17 945 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quad., se Butte Mdws Comment
  CAS-BOT-BC418407  Boykinia occidentalis Lowell Ahart 1985-6-30 5072 Butte East of dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown 868 Comment
  CHSC110136  Brachypodium distachyon L. P. Janeway 2012-4-29 10808 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along South Rim Trail, mid-slope overlooking Big Chico Creek from the south; 0.4 km west of the powerlines. 136 Comment
  CHSC31733  Brachypodium distachyon L. Ahart 1972-5-6 96 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS127606  Brachypodium distachyon L. P. Janeway 2015-4-13 11664 Butte Plumas National Forest; in the canyon of North Fork Feather River, along Pulga Road 1.1 road km Ne of Flea Valley Creek and Pulga. Comment
  RSA739617  Brachypodium distachyon L. P. Janeway, B. Castro 2007-5-19 8980 Butte Cascade Range Foothills, Bottom of unnamed drainage on SE side of Neal Road, 2.9 air km NE of Hwy 99, under the high power lines. 99 Comment
  UC1025797  Brachypodium distachyon L. T. Burcham 1954-8-19 303 Butte approximately 6 mi n of Oroville 396 Comment
  CAS-BOT-BC30309  Brassica nigra Lowell Ahart 1982-5-29 3449 Butte North of the Peter Ahart Ranch, about 2.5 miles north and 1.25 miles east of Honcut. 50 Comment
  CHSC33181  Brassica rapa R. E. Preston 1981-1-20 34 Butte On n bank of Western Canal, ca. 30 m e of Aguas Frias Rd., ca. 18.5 km s of Chico. Comment
  CHSC103727  Briza maxima Lowell Ahart 2010-5-16 16692 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 368 Comment
  CAS-BOT-BC145533  Briza minor A. A. Heller 1914-4-14 11289 Butte Hills 8 miles north of Oroville. Comment
  CHSC88987  Briza minor Christine Hantelman 2000-4-8 65 Butte Oroville. On side of track along south edge of Table Mountain golf course. 60 Comment
  POM113324  Briza minor C. C. Bruce 2379 Butte Little Chico Comment
  SEINET10967594  Briza minor A. Arthur Heller, H. E. Brown 1902-5-6 Heller 5475 Butte Berry Canyon (near Clear Creek). Comment
  SEINET10932597  Brodiaea coronaria Mrs. R. M. Austin Austin 27 A Butte Iron Canyon Comment
  CHSC90224  Brodiaea elegans subsp. elegans Robert Kissane 1989-5-12 2 Butte East side of Bruce Road, ca. 500 m s of Humboldt Road, Chico. 80 Comment
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Jun 17 2014
  SEINET10938217  Brodiaea laxa Mary Susan Taylor 1973-1 Taylor 56 A Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  CHSC80778  Brodiaea minor Vernon H. Oswald 1998-7-3 9245 Butte East slope of Little Butte Creek Canyon in Paradise, ca. 0.1 mi north of the boundary of Bille Park along a continuation of the Bille Park Nature Trail. 487 Comment
  JEPS7701  Brodiaea minor W. L. Jepson 1934-5-4 16622 Butte 2.5 mi ne Cana Comment
  POM169625  Brodiaea minor A. A. Heller, H. E. Brown 1902-5-10 5524 Butte Berry Canyon (Near Clear Creek). Comment
  HSC38058  Brodiaea minor Thomas W. Nelson, Jane P. Nelson 1976-5-10 2465 Butte Beside SR 191 just N of its junction with SR 70 Comment
  UC659998  Brodiaea minor L. Constance 1941-5-28 2825 Butte 3 mi SW of Paradise 304 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
  SEINET10932607  Brodiaea volubilis H. E. Brown 1897-5-1 Brown s.n. 1897 Butte Collected near Clear Creek. 175 feet alt. Comment
  CDA31579  Bromus carinatus T. C. Fuller 1962-7-12 9181 Butte 2 miles east of Butte Meadows, road to Jonesville, bottomland of Butte Creek 0 Comment
  CHSC88147  Bromus carinatus var. carinatus Lowell Ahart 2004-7-23 11301 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows. 1456 Comment
  CHSC94309  Bromus carinatus var. carinatus Lowell Ahart 2006-7-16 12976 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
  CHSC98973  Bromus diandrus Lowell Ahart 2008-5-12 14742 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CHSC28863  Bromus hordeaceus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 466 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  CHSC25476  Bromus laevipes L. Ahart 1977-6-16 1412 Butte Along the banks of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  JEPS110217  Bromus laevipes Lowell Ahart 2006-5-19 12631 Butte Road bank, on the west side of the dirt road, Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 405 Comment
  UCD80526  Bromus laevipes CNPS SN Foothill Team 2005-5-4 Survey Butte Bidwell Park. Comment
  CAS-BOT-BC162364  Bromus madritensis John Thomas Howell 1961-9-22 36782 Butte Sierra Nevada. Jarbo Gap, Feather River Highway. Comment
  CHSC100992  Bromus madritensis subsp. madritensis L. P. Janeway 2008-4-2 9249 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  CHSC42847  Bromus madritensis subsp. madritensis Lowell Ahart 1987-5-6 5550 Butte Along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC93449  Bromus madritensis subsp. madritensis Lowell Ahart 2006-5-10 12622 Butte Road cut bank, on the north side of the poor dirt road, Bardees Bar Road, about 100 yards north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 1/2 miles (air) southwest of Pulga. 354 Comment
  CAS-BOT-BC162201  Bromus orcuttianus L. P. Janeway 1995-7-27 4877 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca. 0.6 mile east of the western end of the ridge. 1143 Comment
  CHSC88273  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  POM183184  Bromus orcuttianus H. F. Copeland 1930-7-21 1348 Butte Jonesville. 1524 Comment
  CHSC49516  Bromus racemosus Vernon Oswald 1988-5-18 3318 Butte Honey Run Rd. 0.7 mi sw of the Skyway, Paradise. On the edge of the road. 426 Comment
  SEINET4404362  Bromus rubens J. Nachlinger 1984-4-8 922 Butte Table Mountain 4 miles N of Oroville 366 Comment
  CHSC61534  Bromus sterilis Lowell Ahart 1993-6-20 6978 Butte At Camp 18. 1158 Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  CDA1860  Bromus tectorum L. Ahart 2003-5-9 10120 Butte South side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. Comment
  CHSC65211  Bromus tectorum Lowell Ahart 1995-5-30 7585 Butte Along the edge of the dirt road, south of Beatson Hollow, about 3/4 mile north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  UC1609153  Bromus vulgaris Vernon H. Oswald and Lowell Ahart 1993-6-22 5562 Butte Long Ravine w of Stirling City (along road just n of the Diversion Dam for Hendricks Canal); Long Ravine 960 Comment
  CHSC71265  Bulbostylis capillaris Lowell Ahart 1998-7-1 8020 Butte Below of W of a large seep, W of the lone oak tree, W of the cow chute on the W side of Cherokee Road, North Table Mountain, about 7 mi (air) N of Oroville. 396 Comment
  JEPS117718  Calamagrostis canadensis Lowell Ahart 2010-9-21 17222 Butte On damp soil, open meadow, about 10 yards east of poor dirt road, 200 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1917 Comment
  CAS-BOT-BC185309  Calamagrostis koelerioides John Thomas Howell 1951-8-19 28154 Butte Sierra Nevada. 2 miles west of Pulga. 365 Comment
  HSC32577  Calandrinia ciliata Dale R. Gradek 1974-4-20 26 Butte N end of Table Mtn., near Oroville 305 Comment
  CHSC43860  Callitriche hermaphroditica Vernon Oswald 1988-4-4 3267 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. In the western-most farm pond located along a drainage in the section indicated above. 53 Comment
  UC478559  Calocedrus decurrens E. B. Copeland 1931-7-28 603 Butte on ridge w of North Willow Creek Jonesville 1650 Comment
  CHSC22950  Calochortus albus Robert A. Schlising 1963-5-4 2551 Butte 7.7 mi E of Jct Cherokee Road and Alt Hwy 40. Along Cherokee Road. 335 Comment
  CHSC3306  Calochortus albus M. L. Hillier 1966-5-7 Butte 2.5 miles e. of covered bridge. Comment
  POM169376  Calochortus albus A. A. Heller, H. E. Brown 1902-5-7 3032 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  CHSC115456  Calochortus monophyllus M. Sutton; K. Schierenbeck 2013-5-5 50 Butte Deer Creek. 657 Comment
  CHSC31342  Calochortus monophyllus Leslie Steidl 1980-4-1 9 Butte N side of railroad grade, 1 mi. e of Craig Access Rd, 1.5 mi e of cemetery, 3.9 mi from Lumkin Rd, 18 mi e of Oroville. 341 Comment
  CHSC3298  Calochortus monophyllus M. L. Hillier 1966-4-23 Butte Along Hwy. 32 9 1/2 miles e. of C. S. C. Admin. Build. Chico. Comment
  UC311628  Calochortus monophyllus Mrs. B. O. Clark 1915-4-12 213 Butte near Paradise (in the lower Sierra Nevada); Sierra Nevada 600 Comment
  UC672149  Calochortus monophyllus Mrs. Rurie Lyle 1928-4-20 Butte near Chico Comment
  CAS-BOT-BC492602  Calochortus monophyllus C. C., Mrs. Bruce 1893-5-1 2404 Butte Foot hills Comment
  SEINET8197472  Calochortus monophyllus M. J. Williams 1967-4-22 s.n. Butte Between Oroville and Feather Falls. 244 Comment
  CHSC95161  Calochortus superbus R. D. Fischer 2004-4-20 803 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy 32. Collected along Guardian Trail, north of the Disk Golf Course, on a grassy hillside. 335 Comment
  CHSC21261  Calochortus tolmiei M. S. Taylor 1973-5-2 29 Butte Ca. 150 ft. n of Billy Road Crossing, Paradise. 762 Comment
  CHSC77453  Calochortus tolmiei Laura Bogni 1997-4-5 12 Butte Magalia Grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SEINET12050638  Calochortus tolmiei Unknown 1981-1 6 Butte Paradise, ca 0.25 mi E of Pearson & Pentz intersection on W side of Feather River Canyon (W branch) 579 Comment
  RSA337395  Calycadenia multiglandulosa subsp. bicolor L. Ahart, Peter Ahart 1984-6-10 4687 Butte Along edge of a new subdivision road 1 mile SE of Hurleton, 1/12 mile E of Oak Grove Cemetery, 10 miles E of Oroville. 500 Comment
  CAS-BOT-BC106091  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi. e. of Pentz, Canyon of W. Branch of N. Fork of Feather River 182 Comment
  CAS-BOT-BC106100  Calycadenia oppositifolia H. M. Hall 1914-7-20 9764 Butte Humboldt Road 335 Comment
  CHSC78118  Calycadenia oppositifolia Lowell Ahart 2000-5-31 8415 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
  CHSC84508  Calycadenia oppositifolia John Dittes; Lowell Ahart, Steve Green, Josephine Guardino 2003-5-27 2003 -32 Butte Cascade Range Foothills; Upper Bidwell Park; approximately 6.7 air-miles northeast of Chico, 2.5 air-miles northeast of Horseshoe Lake; on cut road bank and slope on north side of main road, just west of Parking Lot-R. 228 Comment
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Oct 16 2006
  JEPS20220  Calycadenia oppositifolia R. F. Hoover 1938-4-24 3237 Butte 3 mi n Chico Comment
  JEPS22852  Calycadenia oppositifolia A. A. Heller 1938-5-22 15108 Butte near Chico airport Comment
  UC1094002  Calycadenia oppositifolia Lewis S. Rose 1955-6-15 55106 Butte 3 mi e of Pentz (canyon of W Branch of N. Fork of Feather River); N. Fork of Feather River 182 Comment
  CHSC84034  Calycadenia spicata Lowell Ahart 2003-6-20 10296 Butte In pasture fields, Peter Ahart Ranch, about 2 miles north and 1 3/8 miles east of Honcut, about 12 miles southeast of Oroville. 42 Comment
  UC1876649  Calycadenia spicata Gerald D. Carr 1971-6-16 565 Butte Hwy 99 at Durham Rd., 10 mi SE of Chico. Comment
  CAS-BOT-BC275386  Calycadenia truncata var. truncata John Thomas Howell 1951-6-26 27506 Butte Feather River Canyon 198 Comment
  JEPS127136  Calycanthus occidentalis Lowell Ahart 2016-8-30 21318 Butte On the north side of La Porte road, about one mile west of Marysville Road, about 4 miles (air) southwest of Brownsville. Comment
  CHSC57127  Calyptridium monospermum L. P. Janeway 1988-6-25 2881 Butte Creek along Bull Hill Road 2.2 mi from the Skyway. Disturbed (logged) slopes above the creek. 1508 Comment
  UC1136676  Calyptridium monospermum J. E. Sowder 1933-7-5 103 Butte 2 mi se of Promentory Point 1066 Comment
  CHSC33260  Calystegia atriplicifolia subsp. buttensis R. A. Schlising; R. Banchero 1980-6-12 3687 Butte Along Hwy 32, 3.2 miles S of Butte/Tehama County line. Comment
  JEPS47865  Calystegia atriplicifolia subsp. buttensis A. A. Heller 1913-6-7 10789 Butte near Stirling; near Stirling 1036 Comment
  UC1586576  Calystegia atriplicifolia subsp. buttensis Vernon H. Oswald and Lowell Ahart 1991-6-5 4654 Butte ca 0.5 miles west of Highway 32 on logging road 200-G ca 1 mile north of Platte Mtn Lookout between Forest Ranch and Lomo. Comment
  UC1794959  Calystegia atriplicifolia subsp. buttensis R. K. Brummitt and R. Schlising 1998-5-16 19867 Butte 12 km N of Paradise on Skyway, near De Sabla 850 Comment
  CHSC94105  Calystegia malacophylla subsp. malacophylla Lowell Ahart 2006-7-11 12942 Butte About 100 yards south of Humboldt Road, about 1 3/8 miles (air) southwest of Butte Meadows. 1400 Comment
  SEINET12329570  Calystegia occidentalis L. Ahart, Ahart, P. 1984-1 4717 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  SD3808  Calystegia occidentalis subsp. occidentalis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  CHSC62105  Calystegia occidentalis subsp. occidentalis L. P. Janeway 1993-7-2 4428 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Rd 22N84 2.6 mi from Rd 23N28 and 1.8 mi past its crossing of Stony Creek. 993 Comment
  CHSC38555  Cannabis sativa Vernon Oswald 1982-11-6 11 Butte Bidwell Park, Chico. Along the edge of the parking lot at Salmon Hole. 158 Comment
  SEINET10448262  Capsella bursa-pastoris Mary Susan Taylor 1975-3-25 Taylor 419 Butte Chico. Comment
  UCD114531  Cardamine Robert E. Preston 1983-2-7 380 Butte above the SW bank of McCabe's Creek, at its junction with Lumpkin Road, 10 miles E of Oroville. 371 Comment
  UCD149361  Cardamine breweri Lowell Ahart 1978-5-31 1748 Butte Edge of the South Fork of the Feather River, 0.5 miles above the Golden Trout Crossing. Approximately 4 miles west of Sly Creek Resevoir, west of Strawberry Valley, Yuba County. 750 Comment
  JEPS119569  Cardamine californica Lowell Ahart 2012-2-22 17738 Butte About 100 yards of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CHSC35007  Cardamine oligosperma R. E. Preston 1982-2-25 179 Butte 20 ft s of Humboldt Rd, ca. 1/4 mi e of its jct with Bruce Rd; ca. 3 mi e of downtown Chico. 87 Comment
  CHSC99310  Cardamine oligosperma Lowell Ahart 2008-5-21 14786 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC33901  Cardamine pachystigma var. dissectifolia M. S. Taylor 1981-5-15 3752 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  CAS-BOT-BC18462  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2937 Butte Willow Creek at crossing of Humbug Summit Road. 1874 Comment
  SEINET10585935  Carex abrupta Lawrence P. Janeway, Robert A. Schlising 1988-7-16 Janeway 3020 Butte The Carices of Butte county. T26N, R5E, Jonesville quad (15") NW1/4 of sec 21. Along Willow Cr, 1 mile W of Humbug Rd. On dry disturbed forest floor (Jeffery pine and white fir). With C. integra, C. fracta, C, jepsonii. 1798 Comment
  CHSC44438  Carex amplifolia Lowell Ahart 1988-6-29 6100 Butte Along a small branch of Bean Creek Road, about 3/4 mile south-east of Little Bald Rock. 944 Comment
  UC478555  Carex athrostachya E. B. Copeland 1928-7-28 607 Butte Jonesville, about the edges of the Lily Pond 1700 Comment
  CAS-BOT-BC19105  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  SEINET10466741  Carex aurea Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4191 Butte T25N R5E sw 1/4 se 1/4 36. Jonesville SW. S. side of Coon Hollow Rd., 1.1 mi E of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 5500 ft. 1676 Comment
  UCD140126  Carex aurea L. P. Janeway; R. A. Schlising 1988-7-16 3011 Butte adjacent to Jones Creek at crossing of road to Scotts John Creek. 1615 Comment
  CHSC81925  Carex barbarae L. P. Janeway 2001-6-13 7170 Butte Sacramento Valley. Along Nelson Road 1.3 km east of 7 Mile Road (Chico-Butte City Hwy). Along bank of small dirt-lined canal next to the road. 30 Comment
  CHSC116209  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte Drainage on the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC45075  Carex bolanderi Vernon Oswald 1987-5-12 2392 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between Crouch Ditch dam and the double set of transmission lines. 80 Comment
  UCD140199  Carex brainerdii L. P. Janeway 1988-6-14 2785 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  CAS-BOT-BC422329  Carex cyrtostachya Peter F. Zika 2011-7-6 25536 Butte Pinkard Creek, below Mooreville Ridge Road, 1.2 road miles N of dam on Lost Creek Reservoir, northern Sierra Nevada Highlands (n SNH) 1040 Comment
  CHSC111018  Carex cyrtostachya L. P. Janeway; Lowell Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. Small seepage/drainage (now dry) on the west edge of a low broad granite slab, 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  CHSC52852  Carex densa L. P. Janeway 1987-6-13 2188 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Road) from Jarbo Gap. 883 Comment
  JEPS120129  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte Northwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. Comment
  CHSC52862  Carex echinata subsp. echinata L. P. Janeway; R. A. Schlising 1988-7-22 3072 Butte Seep just above the High Lakes Road 3.4 mi W of the pass. 1905 Comment
  CHSC111132  Carex feta Lowell Ahart 2012-6-2 18138 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oriville. 286 Comment
  CHSC44934  Carex feta Lowell Ahart 1988-7-31 6159 Butte On the south side of the road, a little south-west 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 miles north-east of Stirling City. 1066 Comment
  CHSC45048  Carex feta Vernon Oswald 1987-5-18 2907 Butte Butte Creek Reserve on the s side of Butte Creek e of Hwy 99. On the edge of a now dry ditch diverting winter water from the control valve of Durham Mutual Ditch back into Butte Creek. 68 Comment
  UC1748323  Carex feta L. P. Janeway 1995-7-16 4860 Butte along Concow Road 8.2 mi E of West Branch Feather River Breakneck Canyon, E side (0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; 1.5 mi N of Kimshew Creek) 1402 Comment
  UCR7833  Carex feta Marilyn Malin 1968-4-19 246 Butte W side of Cherokee Road, c. 2 mi south of Cherokee, & 100 yards east of the Cherokee Graveyard 405 Comment
  CHSC43115  Carex fracta L. P. Janeway 1986-9-1 1837 Butte NE-facing slope above Philbrook Reservoir. 1767 Comment
  JEPS121929  Carex fracta Lowell Ahart 2014-7-16 19678 Butte About 50 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET7468094 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville 1720 Comment
  JEPS105636  Carex hirtissima L. P. Janeway 2003-6-8 7816 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek 1116 Comment
  CHSC101996  Carex inversa L. P. Janeway 2009-9-22 9954 Butte Sacramento Valley. Oroville: west side of Third Avenue between Montgomery Street and Safford Street. In narrow parkway strip between sidewalk and street. 49 Comment
  CHSC45080  Carex jonesii V. Oswald; L. Ahart 1988-6-17 3404 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. 1066 Comment
  RSA122447  Carex laeviculmis P. L. Johannsen 1936-7-17 950 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  UC175309  Carex laeviculmis A. A. Heller 1913-6-7 10819 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  UCD140475  Carex lemmonii L. P. Janeway 1987-6-27 2357 Butte Bald Mountain; along the Concow Road. 1694 Comment
  CHSC43900  Carex multicaulis L. P. Janeway 1987-6-5 2147 Butte Along the Peavine Cr road (22N39) 0.1 mi E of its beginning at French Cr. 640 Comment
  RSA716322  Carex multicaulis L. P. Janeway 2005-5-29 8409 Butte Northern High Sierra Nevada; Top of south end of Granite Ridge (between Rock Creek and Camp Creek), about 2.3 km. south of Kimshew Point. On southeast-facing side of ridge top. 1317 Comment
  UCD140656  Carex multicaulis L. P. Janeway 1987-6-27 2368 Butte 2.0 mile west of Bald Mountain alng road to Stirling City. 1493 Comment
  CHSC42280  Carex nudata Steven Triano 1987-4-19 50 Butte Ca. 0.3 mi e of Hwy 32, ca. 22 mi nne of Chico. Along West Branch Butte Creek. 853 Comment
  CHSC52249  Carex nudata L. P. Janeway 1988-4-10 2613 Butte Along Little Chico Creek ca 1/2 mi east of Bruce Road. 85 Comment
  CHSC84733  Carex pachystachya L. P. Janeway; John Hunt 2003-5-8 7781 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 90 m west of Cohasset Road bridge. 56 Comment
  SEINET4231788  Carex pachystachya L. Janeway, Gog, L 2008-1 3190 C Butte Near Cornelia Lott Sank Memorial Spring. Comment
  JEPS106524  Carex pendula L. P. Janeway 2004-6-20 8137 Butte Sacramento Valley. South end of Chico; along edge of Comanche Creek at the bicycle bridge (former railroad bridge) about 150 m southeast (upstream) of the Midway (road) bridge across the creek 59 Comment
  CAS-BOT-BC118351  Carex praegracilis L. P. Janeway 1987-5-7 2021 Butte Drier part of marsh on NE side of Hwy 149, 1/2 mi NW of Hwy 70. Shippee quad. 74 Comment
  UCD140748  Carex praegracilis Kathy Corson 1969-4-6 25 Butte Upper Park Road of Big Chico Canyon, 8 miles northeast of Chico. Comment
  CAS-BOT-BC117390  Carex senta A. S. Crafts s.n. Butte On Ponderosa Way, Yankee Hill. 914 Comment
  CHSC44947  Carex simulata L. P. Janeway; R. A. Schlising 1988-8-2 3150 Butte Ca 1 1/2 air mi NW of Butte Meadows; along Cascade Cr ca 1/2 mi upstream of the Soda Springs USFS campground. 1143 Comment
  JEPS121946  Carex simulata Lowell Ahart 2014-7-7 19584 Butte In the east part of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CAS-BOT-BC116740  Carex subfusca A. A. Heller 1915-6-25 12018 Butte Chico Meadows in the Sierra Nevada. 1219 Comment
  CHSC52874  Carex subfusca L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3082 Butte Near Scotts John Cr 2.7 mi N of the Butte Cr Rd. 1920 Comment
  SEINET8573794 Image available Carex subfusca Unknown 2009-1 24508 Butte Comment
  UC830196  Carex subfusca A. A. Heller 1915-6-25 12018 Butte Chico Meadows Sierra Nevada 1219 Comment
  UCD141167  Carex subfusca L. P. Janeway 1988-6-25 2873 Butte along Bull Hill road, 1.9 miles from Skyway. 1508 Comment
  CAS-BOT-BC115305  Carex utriculata Herbert Faulkner Copeland 1933-7-21 s.n. Butte By Butte Creek not far above Colby, vicinity of Jonesville. Comment
  JEPS122426  Carex xerophila Peter F. Zika with L. P. Janeway 2012-5-16 25868 Butte Magalia Serpentine, Coutolenc Road 0.1 miles N of Skyway Road. Northern Sierra Nevada Highland (n SNH) Comment
  CHSC111130  Carpenteria californica Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18201 Butte About 50 yards south of the dam at Sycamore Pool, Lower Bidwell Park, Chico. 62 Comment
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Feb 9 2019
  SEINET10478176  Castanea sativa Melvin L. Conrad, Douglas G. LeDoux; Patricia L. Kenney 1973-6-5 Conrad 7034 Butte Roadside in paradise 792 Comment
  CHSC23648  Castilleja M. S. Taylor 1976-4-4 1064 Butte On s side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 457 Comment
  SEINET10931253  Castilleja Mary Susan Taylor 1976-4-4 Taylor 1064 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC115360  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-21 19956 Butte Steep east road cut, along Oregon Gluch Road, about one mile south of Oregon City, about 4 1/2 miles north of the intersection of Cherokee Road and Oregon Gulch Road, about 8 miles north of Oroville. 308 Comment
  LA209084  Castilleja affinis subsp. affinis E. B. Copeland; 1930-7-12 Butte above Jonesville 2100.0 Comment
  CHSC114940  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20038 Butte On the east side of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70, about 11 miles (air) north of Oroville. Foothill woodland. 292 Comment
  CHSC115315  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20051 Butte On the south side of the road to the Forbestown Reservoir, about 1/2 mile southwest of the Forbestown Reservoir, about 3 1/2 miles (air) northeast of Forbestown. 669 Comment
  JEPS81470  Castilleja applegatei subsp. pinetorum M. S. Taylor 1982-5-23 4517 Butte ca 0.5 mi sw Butte-Plumas County line (s side of Hwy 70, by Arch Rock Tunnel); Pulga SW Quad. 487 Comment
  SEINET10549334  Castilleja applegatei var. fragilis Lowell Ahart 1985-5-15 Ahart 5005 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  SEINET10549340  Castilleja applegatei var. fragilis Mary Susan Taylor 1981-4-5 Taylor 3484 Butte T21N R4E se sec 2; Berry Creek quad. E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds, ca. 3 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Steep rock wall; 1400 ft. 427 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CDA41336  Castilleja attenuata T. C. Fuller 1958-4-15 3804 Butte 1 mile south of Oroville. 0 Comment
  UCD122342  Castilleja campestris L. Ahart 1970-4-4 36 Butte Peter Ahart Ranch, near Honcut. 45 Comment
  CHSC61015  Castilleja campestris subsp. campestris Lowell Ahart 1993-5-17 6950 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC90144  Castilleja exserta M. P. Howe 1984-4-1 11 Butte Salmon Hole, upper Bidwell Park. 182 Comment
  CHSC109654  Castilleja exserta subsp. exserta Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte Weedy field on the north side of the path, north of Big Chico Creek, on the south side of the paved park road, south of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  UCR188712  Castilleja lacera Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  JEPS124197  Castilleja pruinosa Lowell Ahart 2015-4-13 20035 Butte About 3 miles (air) north of Jarbo Gap, about 17 1/2 miles (air) North of Oroville Comment
  UC426964  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville 1500 Comment
  CHSC27264  Casuarina equisetifolia P. Moyer 1971-2-1 76 Butte CSUC campus. Cherry St. on sidewalk behind Engineering Bldg. 60 Comment
  JEPS117625  Catalpa speciosa Lowell Ahart 2010-5-28 16744 Butte On the north side of the path, about 30 yards southwest of the Cedar Grove Parking Area, in Lower Bidwell Park, Chico 67 Comment
  CHSC31643  Caulanthus lasiophyllus L. Ahart 1974-4-14 415 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC11994  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville. 1550 Comment
  CAS-BOT-BC48815  Ceanothus cuneatus var. cuneatus D. O. Burge 2007-3-27 DOB 815 b Butte Butte Creek watershed, below Doe Mill Ridge, on slope above Butte Creek 243 Comment
  CAS-BOT-BC50821  Ceanothus integerrimus John Thomas Howell 1975-6-15 51116 Butte Sierra Nevada - Paradise - skyway near Billie Road 609 Comment
  CAS-BOT-BC50824  Ceanothus integerrimus Lowell Ahart 1987-5-6 5535 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC101662  Ceanothus integerrimus Lowell Ahart 2009-4-26 15640 Butte On the west side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC45729  Ceanothus integerrimus E. Ray Latham 1988-4-19 Butte Population Cohasset Ridge, 14km ne of Chico municipal airport. 500 Comment
  CHSC81297  Ceanothus integerrimus J. Trizzino 2001-4-24 48 Butte Yahi Trail off Wildwood Road in Upper Bidwell Park, about 3/8 mi from trailhead. Riparian corridor along Big Chico Creek. 91 Comment
  LA43617  Ceanothus integerrimus E. B. Copeland; 1929-7-14 sn Butte Jonesville 502 Comment
  UC203673  Ceanothus integerrimus A. A. Heller 1914-6-22 11502 Butte Chico Meadows 1219 Comment
  CAS-BOT-BC51147  Ceanothus lemmonii John Thomas Howell 1975-6-15 51115 Butte Paradise, Skyway near Billie Road 609 Comment
  SEINET10903222  Ceanothus lemmonii Mary Susan Taylor 1974-4-28 Taylor 211 Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  CHSC39787  Ceanothus prostratus Eloise Gallatin 1935-5-4 Butte Above Forest Ranch. Comment
  CHSC55405  Ceanothus prostratus Charlie Crannell 1991-4-13 1 Butte Forest Ranch; west of intersection of Doe Mill Road and Garland Road. 865 Comment
  UCD112652  Ceanothus prostratus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET13946044 Image available Ceanothus prostratus Lewis S. Rose 1955-1 55098 Butte De Sabla; 2400 ft alt. 732 Comment
  RSA32884  Ceanothus prostratus var. occidentalis A. A. Heller 1941-6-22 16179 Butte roadside bank, edge of the forest at Cohasset. Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  CDA19001  Centaurea maculosa Keck, Riley 2000-7-25 PDR 1170759 Butte 2 miles N of Skyway, on the west side of Coutolenc Rd in the vicinity of Magalia. 0 Comment
  CHSC116109  Centaurea solstitialis Lowell Ahart 2015-10-9 20542 A 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
  CHSC37401  Centaurea stoebe subsp. micranthos R. Preston; R. Schlising 1982-8-26 4375 Butte N and e of De Sabla and Lovelock at 'Doon Camp' just n of Little West Fork of Feather River. Roadside. 865 Comment
  RSA724859  Centaurium muehlenbergii B. Castro, L. P. Janeway 2005-6-5 1480 Butte About 6 air miles southeast of Chico, in bottom of canyon SE of Neal Road, about 100 feet northwest of intermittent creek. 85 Comment
  CHSC116736  Centaurium tenuiflorum Lowell Ahart 2016-5-24 20844 Butte 50 yards north of the ditch, about 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  JEPS5013  Centromadia fitchii H. F. Copeland 1645 Butte near Pentz Comment
  CDA13342  Cephalanthera austiniae G. F. Hrusa, T. D. Wilfred 1996-7-9 13190 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  UCSC000159  Cephalanthera austiniae Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC116136  Cerastium glomeratum Lowell Ahart 2015-11-7 20633 Butte On the bottom of Grizzly Creek, flows into Dark Canyon, about 1/8 mile southwest of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 231 Comment
  CHSC71171  Cerastium glomeratum Lowell Ahart 1998-5-30 7962 Butte About 200 yards northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, about 7 miles (air) north of Oroville. 403 Comment
  RSA0118720  Cerastium glomeratum Lowell A. Ahart 2014-4-16 19363 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  UCD80206  Cerastium glomeratum CNPS SN Foothill Team 2006-4-24 SNFN 0418 Butte CDFG North Table Mountain Wildlife Area. 287 Comment
  CAS-BOT-BC388261  Cerastium glomeratum Lowell Ahart 1980-4-19 2080 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC111732  Cercis canadensis Lowell Ahart 2012-6-28 18236 Butte Northeast edge of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC55491  Cercis occidentalis Ben Cunningham 1991-4-20 Butte Poe Dam, 10 ft w of Highway 70 and 52 mi s of Greenville. 609 Comment
  SFV1802  Cercis occidentalis B. Fuller 1961-4-1 s. n. Butte Butte Creek Canyon. Honeyrun Road below Paradise. Comment
  UC136899  Cercis occidentalis Dr. E. B. Copeland 1903-4-11 3045 Butte Chico Comment
  SEINET10940017  Cercis occidentalis Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5375 Butte T22N R2E nw sec 25. Along Humbug Rd, ca. 0.5 mi E of Honey Run Covered Bridge, ca. 6 air mi E of Chico. Foothill Woodland/Riparian Woodland; 600 ft elev. 183 Comment
  UC859441  Cercocarpus betuloides var. betuloides A. A. Heller 1917-3-18 12670 Butte lower end of Iron Canyon (Chico Creek); , Chico Creek Comment
  CHSC40473  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1985-5-15 4968 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC44857  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1979-6-9 1925 Butte East of Magalia. 640 Comment
  CHSC3221  Chamaecyparis lawsoniana Virginia Hagaman 1966-3-5 47 Butte Lower Bidwell Park. Comment
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Jul 25 2018
  JEPS105900  Chamaemelum fuscatum Lowell Ahart 2004-4-10 10732 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  CHSC30216  Chamaesyce hooveri M. S. Taylor 1980-8-15 3252 Butte In Pentz vernal pool, 0.4 mi se of jct of Pentz (Benum) Rd and Hwy 99, ca. 10 mi s of Chico. 54 Comment
  CDA13841  Chamaesyce maculata G. F. Hrusa, T. D. Wilfred 1996-9-5 13569 Butte Butte Basin; Butte Creek immed. below Western Canal District Dam. Comment
  CHSC42957  Chamaesyce maculata Lowell Ahart 1987-7-3 5781 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
  CHSC51259  Chamaesyce maculata Lowell Ahart 1990-10-3 6617 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  CHSC6040  Chamaesyce maculata M. MacArthur 1968-6-12 137 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus. 60 Comment
  JEPS115034  Chamaesyce maculata Lowell Ahart 2007-10-31 14520 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville 224 Comment
  JEPS95159  Chamaesyce maculata Lowell Ahart 1997-10-24 7941 Butte about 20 yards n of South Fork of the Feather River (on the e side of Sucker Creek, strand of Lake Oroville, about 1/4 mi w of the Ponderosa Dam); e side of Sucker Creek 274 Comment
  SBBG28498  Chamaesyce maculata W. H. Wheeler 1935-10-23 282 Butte Foreign Plant Introduction Station, Chico 76 Comment
  JEPS115728  Chamaesyce ocellata subsp. ocellata Lowell Ahart 2009-8-15 16284 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 33 Comment
  JEPS94872  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte about 7 air mi n of Oroville (about 1/4 mi w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CHSC33632  Chamaesyce serpillifolia subsp. serpillifolia R. E. Preston; R. A. Schlising 1981-7-21 30 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  CHSC38442  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald 1983-6-24 757 Butte Upper Bidwell Park, Chico, in Lindo Channel near Five Mile Recreation Area. 79 Comment
  CHSC94834  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2006-10-8 13440 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
  RSA726434  Chamaesyce serpillifolia subsp. serpillifolia L. Ahart 2007-11-3 14564 Butte About 3/4 mile east of the Power House below Kuncke Reservoir, about 1.25 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  SEINET10529951  Cheilanthes californica Mary Susan Taylor 1981-5-15 Taylor 3732 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
  CDA14058  Cheilanthes gracillima G. F. Hrusa, T. D. Wilfred 1997-5-1 13705 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC32693  Cheilanthes gracillima M. S. Taylor 1981-3-24 3438 Butte S side of Hwy 70, in curve in rd across the river from Mayaro, ca. 1 mi. e of Pulga. 487 Comment
  JEPS97333  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1995-8-19 7616 Butte 1 mi N and 2 3/4 mi E of Honcut; Peter Ahart Ranch 36 Comment
  SEINET10479092  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1975-10-3 Taylor 933 A Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  SEINET10479020  Chenopodium botrys Lowell Ahart 1984-6-8 Ahart 4672 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UCSB64026  Chenopodium murale Ahart, Lowell 1981-7-26 Butte 1/10 mile west of Pennington Road, just west of the road to the Gray Lodge Waterfowl Management Area Headquarters, about 12 miles south-west of Gridley 30 Comment
  CHSC109763  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-10-28 18528 Butte About 50 yards east of the freeway, northwest of Table 2, Lower Bidwell Park, Chico. 67 Comment
  UC426926  Chimaphila menziesii E. B. Copeland 1930-7-27 Butte Jonesville 1600 Comment
  UC474264  Chimaphila menziesii H. F. Copeland 1928-8-14 1020 Butte woods near Jones Creek (Jonesville); Jonesville Comment
  CAS-BOT-BC451483  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  CHSC93990  Chimaphila umbellata R. D. Fischer 2004-6-20 778 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In the western woods above the pond. 1371 Comment
  CHSC94161  Chimaphila umbellata Lowell Ahart 2006-6-24 12854 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  UC426925  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville Comment
  CDA952  Chloris virgata D. G. Kelch 2006-8-2 6 .337 Butte Along Ord Ferry Rd. Comment
  UCD80425  Chlorogalum angustifolium CNPS SN Foothill Team 2005-5-3 SNFN 0197 a Butte City of Chico, Doe Mill Meadowfoam Preserve, ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  HSC33027  Chlorogalum angustifolium Thomas W. Nelson, Jane P. Nelson 1976-5-9 2493 Butte Beside SR 70 about 4 mi. S of Palermo Rd. Comment
  CAS-BOT-BC252674  Chorizanthe membranacea A. A. Heller; H. E. Brown 1902-5-6 5465 Butte Berry Canyon, near Clear Creek Comment
  CAS-BOT-BC252669  Chorizanthe membranacea Lowell Ahart 1975-6-5 s.n. Butte North Honcut Creek, Honcut 45 Comment
  CHSC103750  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2010-5-16 16705 Butte About 100 yards west of the fence, about 1/2 mile southeast of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 381 Comment
  UC370341  Chorizanthe pungens var. pungens C. C. Parry 1883-1 Butte Chico Comment
  CHSC84285  Chorizanthe stellulata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10218 Butte Rifle and Trap Range, northeast of Horseshoe Lake, north of Parking Area E, Upper Bidwell Park, about 1 1/2 miles east of Manzanita Avenue, Chico. 103 Comment
  CAS-BOT-BC36371  Chrysolepis sempervirens A. A. Heller 1914-7-23 11598 Butte Chico meadows 1219 Comment
  CHSC29004  Cicendia quadrangularis M. S. Taylor 1980-4-4 2456 Butte On s side of Melody Lane, ca. 1 mi e of its jct with Honcut-Palermo Rd, ca. 5 mi s of Palermo. 38 Comment
  JEPS115881  Cichorium intybus Lowell Ahart 2009-6-19 15917 Butte On the north side of Ten Mile House Road, just east of the Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC46201  Circaea alpina subsp. pacifica L. P. Janeway 1988-7-2 2960 Butte Along road to French Cr 1.2 mi S of Coyote Gap. Above road. 1127 Comment
  CHSC8115  Cirsium andersonii Dave Isle 1969-5-20 484 Butte 1/2 mile E. of golf course on N. side of road in Upper Bidwell Park, Chico. 59 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
  CHSC46449  Cirsium scariosum V. Oswald; L. Ahart 1989-6-27 3828 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along Butte Creek. 1767 Comment
  CAS-BOT-BC228751  Cistanthe umbellata A. A. Heller 1915-6-11 11966 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  UC1716063  Cistus salviifolius M. S. Taylor 1975-5-6 561 Butte along creek between bridge connecting Holt Hall and Butte Hall, and bridge connecting Holt Hall and Chemistry Building California State University, Chico Comment
  CHSC38565  Clarkia arcuata Vernon Oswald 1983-4-10 324 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 1000 ft e of Parking Area N (Salmon Hole). 158 Comment
  SEINET10453144  Clarkia arcuata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4159 Butte T20N R6E sw sec 6. Along Bean Creek Rd, ca. 5 mi s of Little Bald Rock, ca. 17 mi ne of Oroville. Foothill Woodland; 600 m. 600 Comment
  UCD80473  Clarkia gracilis CNPS SN Foothill Team 2005-5-2 SNFN 0195 a Butte City of Chico, Doe Mill Meadowfoam Preserve, about 85 m south of the entrance gate. 81 Comment
  CDA38047  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte 0.1 mile north of bridge over North Fork Feather River, 1 mile south of Pulga. 0 Comment
  RSA144790  Clarkia gracilis subsp. albicaulis G. I. Stage, R. Thorp 1959-6-21 59 -120 Butte 11.9 miles north-east of Chico. Comment
  CAS-BOT-BC171877  Clarkia gracilis subsp. gracilis L. P. Janeway; Linnea Hanson; Perrie Cobb 1993-5-5 4344 Butte East side of Stringtown Road 0.25 mi north of Hurlton Road 451 Comment
  CAS-BOT-BC163261  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28 993 Comment
  CDA13339  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1996-7-9 13186 Butte Sierra Nevada; Approx. 0.5 m. on USFS 22N89. Immed. S of Rogers Cow Camp on Hwy 162. Comment
  UC1972926  Clarkia mildrediae subsp. lutescens Catherine Schnurrenberger 2011-7-8 Butte On Flea Mountain, off of Concow-Rim Road approx. 1 air mi N of Hwy 70 on and around the access road to the transmission line 944 Comment
  CAS-BOT-BC163276  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1983-6-30 4186 Butte About 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River 1100 Comment
  CHSC70734  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1995-7-16 4858 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  CHSC71158  Clarkia mildrediae subsp. mildrediae L. P. Janeway 1994-7-5 4679 Butte Along ridge 0.7 mi east-southeast of Flea Mountain; northeast side near the top, 0.3 mi east-southeast of Campbell Meadow. Road cutbank and above. 1158 Comment
  CHSC91668  Clarkia mildrediae subsp. mildrediae L. P. Janeway; Samantha Mackey Hillaire 2005-7-11 8489 Butte Northern High Sierra Nevada. Near top of east side of broad ridge between Dogwood Creek and Camp Creek; 1.5 km southwest of confluence of Camp Creek and Lockerman Creek. Steep northeast-facing slope. 1079 Comment
  CHSC86578  Clarkia mosquinii L. P. Janeway; John Hunt 2003-7-1 7861 Butte Northern High Sierra Nevada. Along southeast edge of Middle Fork Feather River arm of Lake Oroville, 960 m west-southwest of mouth of Frey Creek. Just above high water line. 276 Comment
  UC1730253  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte Swayne Hill, S end, along Road 23N28 0.8 mi W of Road 22N34 731 Comment
  UCD80464  Clarkia purpurea CNPS SN Foothill Team 2005-5-3 SNFN 0197 c Butte City of Chico, Doe Mill Meadowfoam Preserve, located ca. 200 m at 240 degrees from the reserve entrance gate, and about 75 m from the east fence. 83 Comment
  CAS-BOT-BC172530  Clarkia purpurea subsp. purpurea A. A. Heller 1914-5-11 11384 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC163652  Clarkia purpurea subsp. quadrivulnera John Thomas Howell 1962-6-16 37599 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CHSC64326  Clarkia purpurea subsp. quadrivulnera H. H. Schmidt; M. Merello, L. Woodruff 1993-6-15 866 Butte Plumas National Forest on state road 23N06 1.5 miles N of the junction with highway 70. 880 Comment
  CAS-BOT-BC164780  Clarkia rhomboidea John Thomas Howell 1962-6-15 37470 Butte Magalia 731 Comment
  CHSC70743  Clarkia rhomboidea L. P. Janeway 1993-6-3 4366 Butte South end of Swayne Hill, along the road to Big Bar Mountain (Road 23N28). 731 Comment
  CHSC70747  Clarkia rhomboidea L. P. Janeway 1993-6-16 4389 Butte Upper slopes, east-facing, in North Fork Feather River; along Hwy 70 1.1-1.3 mi northeast of Jarbo Gap. 670 Comment
  JEPS113191  Clarkia rhomboidea Lowell Ahart 2007-5-29 13923 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast 685 Comment
  UC478495  Clarkia rhomboidea E. B. Copeland 1931-6-10 663 Butte Jonesville 1650 Comment
  UC725469  Clarkia rhomboidea A. A. Heller 1938-5-30 15129 Butte on Feather River Hwy 2 mi w Arch Rock Tunnel (steep slope); ; W of Arch Rock Tunnel on the Feather River Highway, Butte Co. Comment
  CHSC35704  Claytonia exigua subsp. exigua J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1560 Butte Opening in Yellow Pine F. Adjacent to road to Forbestown Resv. just S of its jct with the S. Fork of the Feather River. Comment
  SEINET11933195  Claytonia heterophylla Unknown 1983-1 4289 Butte along small stream that flows into Butte Creek, ca 1 mi E of Butte Meadows 1450 Comment
  SD1562  Claytonia palustris E. B. Copeland 1929-7-28 358 Butte Jonesville; along stream 1500 Comment
  CHSC33107  Claytonia parviflora subsp. parviflora M. S. Taylor 1981-5-15 3745 Butte W side of rd 23N00.1 ca. 3/4 mi s of Coyote Gap, ca. 4 air mi e of Pulga on Feather River Hwy 70; near creek crossing rd. 1158 Comment
  RSA32932  Claytonia perfoliata A. A. Heller 1920-4-10 13361 Butte Chico. Comment
  SEINET10929034  Claytonia perfoliata var. depressa Mary Susan Taylor 1979-3-31 Taylor 1976 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CAS-BOT-BC91350  Clematis lasiantha Helen M. Edwards 1917-6-1 s.n. Butte De Sabla. Comment
  CHSC52783  Clematis lasiantha K. Glozer 1975-4-22 11 Butte Ca. 5 mi. ne of Chico and ca. 200 yd. e of stage watering trough on Cohasset Hwy. 167 Comment
  JEPS115846  Clematis lasiantha Lowell Ahart 2009-4-22 15589 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC44298  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek ca. 1 mi n of Lost Creek reservoir. 1028 Comment
  CAS-BOT-BC499273  Clintonia uniflora V. Oswald; L. Ahart 1988-6-17 3401 Butte West side of Pinkard Creek, 1 mile north of Lost Creek Reservoir 1028 Comment
  CHSC3817  Collinsia sparsiflora L. E. Dunkel 1965-2-23 1 Butte Along road bank ca. 200 yards e of covered bridge, on centerville road of Butte Canyon. 54 Comment
  CHSC38688  Collinsia tinctoria Vernon Oswald 1983-5-18 501 Butte Upper Bidwell Park, Chico, near Yahi Trail 1200 ft e of Parking Area N (Salmon Hole). 170 Comment
  CHSC60614  Collinsia tinctoria L. P. Janeway 1992-6-13 4233 Butte East side of Dark Canyon and Dark Canyon Road ca 1 1/4 mi south of Parkhill and Big Bend Road. Ca 200 ft east of Dark Canyon Road. 464 Comment
  JEPS22209  Collinsia tinctoria Rimo Bacigalupi with Howard Whisler 1957-7-26 6044 Butte 3/1 mi s and below Nimshew (along living stream, along Humbug Rd) 335 Comment
  RSA754851  Collinsia tinctoria L. Ahart 2009-5-30 15785 Butte About 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 0.5 mile (air) west of Highway 32, about 10 miles northeast of Chico. (GPS) 269 Comment
  CHSC96665  Collomia heterophylla Lowell Ahart 2007-4-30 13704 Butte On the east 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
  SEINET2440903  Collomia heterophylla R. M. McKee 1918-5-12 s.n. Butte Magalia. Comment
  POM183159  Collomia linearis H. F. Copeland 1930-7-26 1321 Butte Jonesville, by Butte Creek. 1524 Comment
  CHSC41369  Collomia tinctoria R. A. Schlising; Sandra Morey 1982-8-31 4381 Butte N Butte County, Cherry Hill Meadow, N and E of Butte Meadows off Humboldt Road and N of Butte Creek. At stream edge. 1524 Comment
  CHSC50342  Comandra umbellata subsp. californica Vernon Oswald; Lowell Ahart 1990-5-29 4261 Butte Northwest side of Humboldt Rd (to Butte Meadows), ca. 1.8 miles northeast of Lomo. 1380 Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  UC176144  Comandra umbellata subsp. californica A. A. Heller 1913-6-7 10805 Butte near Stirling 1074 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-BC286068  Conyza canadensis Lowell Ahart 1982-10-6 3848 Butte Along the banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  UC1562383  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 Butte 0.5 mi nw Enterprise Bridge (across Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville, Trifid Bird's Beak 274 Comment
  CHSC89483  Cordylanthus tenuis subsp. viscidus Jenny Marr 1994-7-6 214 Butte Located in the mountains above Oroville, off Oro-Quincy Hwy., along Bloomer Hill Road. 457 Comment
  RSA7124  Coreopsis stillmanii C. B. Wolf 1933-5-19 4823 Butte 10 miles above Raymond on road to Coarse Gold. Comment
  SD3504  Cornus californica E. B. Copeland 1930-6-25 Butte Jonesville 1500 Comment
  CHSC3311  Cornus florida M. Gregg 1966-4-13 65 Butte CSC campus behind the dining hall. Chico. Comment
  CHSC52016  Cornus nuttallii Steven Triano 1988-4-17 58 Butte Ca 50 ft e of Hwy. 32 and 6.54 mi n of Forest Ranch. 984 Comment
  CHSC49700  Cortaderia selloana Vernon Oswald 1987-9-9 3240 Butte Butte Creek Preserve on the s side of Butte Creek, n of the Skyway, ca. 0.1 mi e of the diversion dam for Crouch Ditch. On the bottom of a dredger pond. 80 Comment
  CHSC47976  Corylus cornuta var. californica Vernon Oswald 1987-6-29 3041 Butte Bald Mt., 1.1 mi (odometer) sw of the Lookout. 1645 Comment
  CHSC102504  Cotoneaster lacteus Lowell Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  CHSC44466  Cotula australis Lowell Ahart 1988-5-15 6004 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC97413  Cotula australis Robert Fischer 2006-6-18 1032 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS118469  Cotula australis Lowell Ahart 2011-5-9 17353 Butte South side of Palm Avenue, about 2 miles (air) southeast of East Biggs 29 Comment
  RSA517004  Cotula coronopifolia Barbara Ertter, Lowell Ahart 1986-4-13 5903 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (Mostly used as sheep pasture). 30 Comment
  CAS-BOT-BC291334  Cotula coronopifolia Lowell Ahart 1979-5-25 s.n. Butte 2 miles south of Palermo 35 Comment
  JEPS122154  Crassula aquatica Lowell Ahart 2014-4-15 19356 Butte About 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. Comment
  SEINET260311  Crassula aquatica Lowell Ahart 1984-5-12 4604 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  SEINET10449709  Crassula erecta Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4853 Butte Serpentine Point, west of Yankee Hill. Comment
  SEINET10449715  Crassula muscosa Mary Susan Taylor 1980-3-15 Taylor 2381 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  SEINET10449717  Crassula muscosa Mary Susan Taylor 1980-4-16 Taylor 2492 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  SEINET10449718  Crassula muscosa Mary Susan Taylor 1980-4-6 Taylor 2444 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CAS-BOT-BC427956  Crassula tillaea Lowell Ahart 1974-4-11 s.n. Butte Honcut 45 Comment
  HSC66350  Crassula tillaea M. S. Taylor 1979-3-31 1972 .5 Butte Junction of Pentz-Magalia Rd. and Pentz Rd., SE corner, 1/4 mi. W of Hwy. 70, 22 mi. N of Oroville 198 Comment
  JEPS115662  Crataegus laevigata Lowell Ahart 2009-5-30 15792 Butte On the east side of Big Chico Creek, about 30 yards south of the gate about 10 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CHSC36841  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte On roadcut, w side of Ponderosa Way (Rim Rd), under PGE lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap. 853 Comment
  SEINET10474588  Crepis pleurocarpa Mary Susan Taylor 1982-6-24 Taylor 4722 Butte T22N R4E nw/ne sec 23. Pulga SW quad. W side of Ponderosa Way (Rim Rd) under PG&E lines, 1.1 mi n of its jct with Hwy 70 at Jarbo Gap, nw of Oroville. 2800 ft. Red rocky soil. 853 Comment
  UCD130979  Crepis pleurocarpa M. S. Taylor 1982-6-24 4722 Butte west side of Ponderosa Way (Rim Rd.) under PGE lines, 1.1 miles north of its junction with Hwy 70 at Jarbo Gap. Comment
  JEPS104099  Crucianella angustifolia Lowell Ahart 2003-5-26 10214 Butte On the w side of North Honcut Creek, ca 2 1/2 mi n and 2 2/3 mi e of Honcut, ca 12 mi se of Oroville. 60 Comment
  SEINET11091472 Image available Crucianella angustifolia Barbara Ertter, Lowell Ahart, Jeff Strachan 1980-1 3282 Butte Peter Ahart Ranch, ca. 2.5 mi NNE of Honcut between Oroville & Marysville 30 Comment
  CDA1935  Crypsis alopecuroides L. Ahart 2006-9-1 13302 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  JEPS108961  Crypsis alopecuroides Lowell Ahart 2006-9-11 13302 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville 431 Comment
  UC480664  Cryptantha affinis H. F. Copeland 1930-7-20 1386 Butte Jonesville Comment
  CHSC97357  Cryptantha flaccida Paul Maslin 2005-4-30 54 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610150E 4408939N. 518 Comment
  CHSC29388  Cryptantha intermedia R. A. Schlising; R. Banchero 1980-6-5 3644 Butte N of Lake Oroville along Hwy 70, s of the Pulga crossing of North Fork, Feather River. 609 Comment
  CHSC78128  Cryptantha intermedia Lowell Ahart 2000-5-31 8421 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
  UC660010  Cryptantha intermedia Lincoln Constance 1941-5-28 2830 Butte Magalia, Sierra Nevada foothills Sierra Nevada, South Branch of the Feather River 487 Comment
  SEINET10497508  Cryptantha intermedia Lowell Ahart 1985-5-15 Ahart 4966 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill, N of Oroville. Comment
  CHSC39026  Cryptantha milobakeri R. A. Schlising; J. Jokerst, M. Foster 1983-5-24 4413 Butte Bald Rock Dome in e-central part of county. 975 Comment
  JEPS94944  Cryptogramma acrostichoides Lowell Ahart 1997-8-1 7786 Butte about 1/4 mi e Table Mountain (near some small streamlets of creek, about 8 air mi ne of Stirling City); Snow Meadow, Little Kimshew Creek 1524 Comment
  CHSC38430  Cucumis melo Vernon Oswald 1983-9-17 1041 Butte Upper Bidwell Park, Chico, near Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  POM173662  Cupressus macnabiana H. F. Cofeland 999 Butte Near 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
  CHSC3600  Cupressus nevadensis Gerry Carrauthers 1966-3-5 30 Butte 1/2 mi W. of 99E. Freeway on Highway 32. E. of city of Chico. Comment
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Jul 25 2018
  CHSC577  Cuscuta indecora V. Holt 1935-10-1 Butte Chico Creek. 91 Comment
  CHSC48366  Cuscuta indecora var. indecora V. Oswald 1988-6-8 3364 Butte Fernandez Grant. West side of the access road in the Oroville Wildlife Area 0.3 mi s of the Vance Ave. entrance. 32 Comment
  JEPS118062  Cuscuta pentagona Lowell Ahart 2011-8-17 17627 Butte About 10 yards north of the trail, north of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  RSA4472  Cuscuta suksdorfii var. subpedicellata E. B. Copeland 1931-7-17 676 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  UC1609322  Cycladenia humilis var. humilis Lowell Ahart 1993-7-31 7145 Butte ca. 1/2 mi. n. of & on s. side of dirt rd. that leads to Ramsey Bar 1371 Comment
  CHSC28503  Cymopterus terebinthinus var. californicus M. S. Taylor; J. Jokerst 1979-7-21 2160 Butte On Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC30284  Cynosurus echinatus M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2300 Butte On rd from Magalia serpentine area to Feather River, ca. 1/2 up from the river. 670 Comment
  SEINET10934072  Cynosurus echinatus K. Bridwell 1978-5-28 Bridwell 120 Butte Along Hwy 70, ca. 6 mi NE of intersection with Pentz-Magalia Hwy., ca. 4 mi SE of Paradise. Yellow Pine Forest. 762 Comment
  UCD150346  Cyperus bipartitus William Anderson 1965-9-4 s.n. Butte Dry Creek-Oro-Paradise Rd. Comment
  CAS-BOT-BC114737  Cyperus difformis Lowell Ahart 1981-9-19 3187 Butte Cresta Power House 167 Comment
  SEINET197462  Cyperus difformis J. M. Tucker 1953-8-28 2680 Butte Biggs Rice Experiment Station. Comment
  UCD141013  Cyperus difformis E. M. Johnston 1915-1 W- 132 J Butte Biggs. Comment
  UCD141017  Cyperus difformis H. L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CAS-BOT-BC114606  Cyperus eragrostis Lowell Ahart 1980-7-29 2499 Butte Near Hurleton Swedes Flat Road 600 Comment
  CHSC55609  Cyperus eragrostis L. P. Janeway 1986-9-20 1888 Butte Along the edge of Butte Creek at Agua Firas Road (Watt/Goodspeed Road). 28 Comment
  CHSC68382  Cyperus eragrostis L. P. Janeway 1988-5-29 2706 Butte Low in canyon of Little Chico Creek, about 2 mi south of Ten Mile House. 228 Comment
  UCD54072  Cyperus eragrostis L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  CAS-BOT-BC114599  Cyperus eragrostis L. P. Janeway 1986-10-19 1937 Butte N side Durham-Pentz Rd, on Butte College agricultural land. 82 Comment
  UCD54071  Cyperus eragrostis P. B. Kennedy 9-10 Aug 1921 s.n. Butte Butte County. Comment
  JEPS124351  Cyperus erythrorhizos Lowell Ahart 2015-10-26 20596 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. Comment
  JEPS110330  Cyperus flavescens Lowell Ahart 2006-10-8 13429 Butte Mud flat, near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  RSA0060810  Cyperus iria Lowell A. 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 the Oroville Airport. 28 Comment
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC68396  Cyperus niger L. P. Janeway; C. A. Janeway 1986-10-12 1924 Butte Canyon of North Fork Feather River near Heinz Creek; at a small side creek and seeps along Hwy 70 about 2 mi east of the Pulga turnoff. 441 Comment
  JEPS115055  Cyperus niger Lowell Ahart 2007-11-3 14554 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
  SEINET228551  Cyperus niger Lowell Ahart 1981-9-6 3123 Butte Rest area just a little S of the Arch Rock Tunnel on Highway 70 about 4 miles N of Pulga. Comment
  CAS-BOT-BC113852  Cyperus niger var. capitatus Lowell Ahart 1974-11-9 s.n. Butte Edge of a rice field, Peter Ahart Ranch, Honcut. 150 Comment
  POM313079  Cyperus niger var. capitatus H. L. Mason, Verne Grant 1946-9-27 13141 Butte 3 miles west of Biggs. Comment
  CAS-BOT-BC114204  Cyperus strigosus Lowell Ahart 1982-10-11 3854 Butte West of the check-in-station, Gray Lodge, ca. 12 mi SW of Gridley. 35 Comment
  CAS-BOT-BC114210  Cyperus strigosus John Thomas Howell 1959-9-20 34636 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC113946  Cyperus strigosus Lowell Ahart 2014-7-18 19693 A Butte Border of an irrrigated field, Doug Upton property, about 100 yards west of Lone Tree Road, about 2 miles (air) southwest of Palermo. 35 Comment
  JEPS115648  Cyperus strigosus Lowell Ahart 2009-8-13 16276 Butte About 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC68045  Cystopteris fragilis E. B. Copeland 1931-6-10 602 Butte Jonesville - Butte Creek 1550 Comment
  CHSC87783  Cystopteris fragilis Paul Maslin 2004-2-1 2 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610636E 4413962N. 274 Comment
  CHSC38805  Dactylis glomerata Vernon Oswald 1982-5-23 Butte Upper Bidwell Park, Chico, near the east end of Yahi Trail. Near Chico Creek. 207 Comment
  UCD60296  Dactylis glomerata L. Y. Leonard 1919-6-16 X 3096 Butte Chico. Comment
  SEINET4566566  Danthonia californica R. McKee, H. Westover 1918-6-15 814860 Butte Paradise Comment
  CHSC74039  Danthonia californica var. americana B. Castro 1998-7-8 802 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. 929 Comment
  CHSC116979  Datura wrightii Matthew Forster 2013-5-20 Butte 25 meters on east side of Sacramento River, along River Rd., Chico. 38 Comment
  JEPS115615  Daucus pusillus Lowell Ahart 2009-5-15 15676 Butte About 20 yards east of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 235 Comment
  UC106444  Daucus pusillus R. M. Austin May, 1883 200 Butte Little Chico Creek Comment
  SEINET10454652  Daucus pusillus Mary Susan Taylor 1980-4-27 Taylor 2576 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
  RSA0118757  Delphinium hansenii subsp. hansenii Lawrence P. Janeway 2016-5-5 11941 Butte Cascade Range Foothills. Along Humboldt Road 2.3 road-km northeast of Bruce Road; Chico. 152 Comment
  UCD21586  Delphinium hesperium L. K. Manu 1959-6-5 s.n. Butte Between Pentz and Oroville, about 2 min. N.of turnoff to Oregon City. Comment
  CAS-BOT-BC10106  Delphinium hesperium subsp. pallescens Mrs. H. C. Cantelow 1940-5-10 4255 Butte 8.5 mi. SW of Oroville along Hwy. 24 Comment
  CAS-BOT-BC9920  Delphinium nudicaule Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC3562  Delphinium nudicaule R. D. Briggs 1966-3-2 51 Butte Salmon Hole,' 4 miles N.E. of the Bidwell Park golf course, Chico. Ledge above creek. Comment
  CHSC56872  Delphinium nudicaule K. O'Connor-Henry 1985-3-8 3 Butte North Table Mtn., e of Cherokee Rd. and 3 mi. n of Oroville. 329 Comment
  UC600483  Delphinium nuttallianum H. F. Copeland 1932-6-27 Butte Goverment Trail on point above hotel; Jonesville Comment
  UCD96105  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville in the Sierra Nevada. 1371 Comment
  CHSC56780  Delphinium patens R. A. Schlising; R. Banchero 1981-5-20 4064 Butte Lumpkin Ridge at eastern border of county. 1280 Comment
  CHSC56775  Delphinium patens subsp. patens Kirsten Tarp 1982-6-3 182 A Butte Vilas Rd, Cohasset, NE of KPAY radio tower. 950 Comment
  CAS-BOT-BC121623  Delphinium patens subsp. patens Saichi Kawahara 1968-5-4 394 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CHSC52502  Delphinium variegatum Tom R. Norton 1977-4-24 22 Butte Ca. 9.4 mi nw of Chico, 1.8 mi e of Hwy. 99, 10 yds e of Cana-Pine Creek Rd. Field. 60 Comment
  CHSC53296  Delphinium variegatum Denise Dachner 1975-4-8 5 Butte Ca. 4 yds n of highway 32, 2 mi e of Chico. 60 Comment
  RSA725062  Delphinium variegatum L. P. Janeway 2006-4-30 8570 Butte Cascade Range Foothills, E edge of City of Chico, NW side of Humboldt road 2.2km NE of Bruce Road. 146 Comment
  CHSC2828  Delphinium variegatum subsp. variegatum David Prall 1965-3-28 15 Butte In fields e of Meridian Road, ca. 8 mi ne of Hwy 99E, n of Chico. 60 Comment
  CHSC65507  Delphinium variegatum subsp. variegatum Ron P. Garcia 1995-4-11 18 Butte Ca. 100 ft s of Rabe Rd, ca. 0.4 mi e of Larkin Rd, ca. 4 mi sw of Oroville. Fernandez Land Grant. 47 Comment
  CAS-BOT-BC82877  Dendromecon rigida John Thomas Howell 1955-6-14 30442 Butte Sierra Nevada. Magalia. 731 Comment
  SEINET10448606  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1975-5-9 Taylor 570 Butte Abundant in serpentine area, ca. 50 ft E of the Skyway, ca. 1/4 mi N of DeSabla turnoff, Magalia; with Arctostaphylos sp. 732 Comment
  SEINET10524190  Deschampsia danthonioides D. McClain 1969-4-18 McClain 44 Butte 400 yds. n. from gate on Table Mountain, 5 mi. s.w. on Cherokee Rd. from its junction with Feather River Highway. 488 Comment
  SEINET10524196  Deschampsia danthonioides Lowell Ahart 1982-1 Ahart 3398 Butte On dry soil in low area in a grassy field near dirt rd, ca. 3/4 mi w of check-in station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. Common. 35 Comment
  UC589924  Deschampsia elongata H. S. Yates 1936-8-13 6104 Butte 2 1/2 mi. s.e. Butte Meadow; Paynes Creek Quad. 1493 Comment
  CHSC49526  Desmazeria rigida Vernon Oswald 1985-6-15 1832 Butte Near N. Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 53 Comment
  CHSC35003  Dianthus armeria R. A. Schlising 1980-6-14 3710 Butte N of Lake Oroville along Hwy 162, 0.2 miles N of Berry Creek and 0.8 miles S of junction with Bald Rock Road. Roadside. 560 Comment
  CAS-BOT-BC388456  Dianthus armeria Lowell Ahart 1983-6-30 4173 Butte Along the edge of old Highway 40, near the water fountain, about 4 miles south of Jarbo Gap 350 Comment
  CHSC11912  Dicentra formosa E. B. Copeland 1929-7-22 364 Butte Jonesville. 1500 Comment
  CHSC79753  Dicentra formosa Leanna Brown 1999-4-27 70 Butte Eastern shore of Paradise Lake. 753 Comment
  UC175320  Dicentra formosa A. A. Heller 1913-6-7 10831 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  SEINET12089316  Dicentra formosa J. P. Kroessig 1977-1 17 Butte SW shore of Magalia Reservoir, ca 0.5 mi SE of Magalia. Paradise Quadrangle, 15'. SE 1/4 of Sect 707 Comment
  SEINET12091623  Dicentra formosa G. W. Cox 1972-1 10 Butte Found beside Centerville Rd., about 5 mi NE of Centerville Comment
  CAS-BOT-BC402382  Dicentra formosa subsp. formosa A. A. Heller 1913-6-7 10831 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  RSA21538  Dicentra formosa subsp. formosa Carl B. Wolf 1937-5-17 8724 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, W side of Big Butte Creek 732 Comment
  CHSC30974  Dichelostemma capitatum subsp. capitatum Howard Paul 1980-3-30 1 Butte Ca. 0.25 mi nw of Humbug road, 2.5 mi ne of the Centerville Cemetery, ca. 20 mi e of Chico. 457 Comment
  CHSC9703  Dichelostemma capitatum subsp. capitatum Nancy Mosman 1971-7-3 64 Butte Along n side of Humboldt Road, ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  HSC38022  Dichelostemma capitatum subsp. capitatum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2485 Butte Just E of Magalia Comment
  SEINET10929200  Dichelostemma lacuna-vernalis James D. Jokerst 1985-3-29 Jokerst 2185 Butte Abundant around the edges of vernal pools and drainages, and on some raised mounds. Open annual grassland on clay soils. Immediately NE of the marsh area indicated on Usgs map, ca 1/2 mile north of Cottonwood Rd, NW of PG&E substation several hundred meters, T20N, R3E, center north edge SE 1/4 Section 29, 150 feet. Several miles northwest of Oroville. Comment
  CHSC3820  Dichelostemma multiflorum L. E. Dunkel 1965-4-25 21 Butte 200 yds. Sw of Chico Rod and Gun Club Building, and 600 yds. Nw of Municipal Golf Cours building, Chico. 33 Comment
  CAS-BOT-BC501093  Dichelostemma multiflorum David D. Keck 1933-5-31 2417 Butte 5 miles east of Oroville on road to Bangor Comment
  SEINET10932619  Dichelostemma multiflorum A. Arthur Heller 1914-5-19 Heller 11421 Butte Hills 8 miles north of Oroville Comment
  SEINET8476819  Dichelostemma volubile M. J. Williams, W. Roderick 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road. 168 Comment
  CAS-BOT-BC502524  Dichelostemma volubile H. E. Brown 1897-4-15 210 Butte Near Clear Creek Comment
  CAS-BOT-BC209038  Digitaria sanguinalis Lowell Ahart 1982-8-22 3745 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch ca. 1 mi. N and 3 mi. E of Honcut - Sierra Nevada 50 Comment
  CHSC45211  Digitaria sanguinalis Lowell Ahart 1976-7-4 1152 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC50704  Digitaria sanguinalis Lowell Ahart 1990-6-16 6519 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  UCD64122  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte 8 miles north of Oroville. Comment
  CHSC62335  Diospyros B. Castro 1990-5-6 421 Butte Within the Chico Tree Improvement Center at SE edge of Chico, via Morrow Lane, close to banks of a branch of Comanche Creek (or 'Edgar Slough'). 70 Comment
  SEINET13682945  Diplacus aurantiacus R. T. Short 1959-4-11 s.n. Butte 15 miles E of Oroville on US 40 alt. 549 Comment
  CAS-BOT-BC150500  Diplacus grandiflorus Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET8370221  Diplacus grandiflorus Unknown 1940-6-5 25677 Butte Route 24; along Feather River, above Oroville 10-12 mi. above. 1829 Comment
  CHSC34081  Diplacus kelloggii M. S. Taylor 1980-4-18 2501 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC41897  Diplacus kelloggii Lowell Ahart 1975-3-27 724 Butte Along Swedes Flat Road, about 1/8 mi e of the bridge across Rocky Honcut Creek, ne of Bangor. 304 Comment
  SEINET13700565  Diplacus kelloggii M. J. Williams 1967-4-22 s.n. Butte Road from Oroville to Feather Falls. 244 Comment
  CAS-BOT-BC153220  Diplacus kelloggii Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CHSC30718  Diplacus layneae M. S. Taylor 1980-5-27 2660 Butte On Big Bald Rock, granitic dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CAS-BOT-BC153334  Diplacus layneae Clarence R. Quick 1952-6-25 52 -68 Butte Ridge - top, 21.5 miles from Chico on Deer Creek Road Comment
  CHSC44796  Diplacus torreyi R. Banchero 1980-6-26 269 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC37119  Disporum hookeri L. Ahart 1982-9-13 3810 Butte Near Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC48665  Dodecatheon alpinum Vernon Oswald 1983-7-6 828 Butte Near Humboldt Rd. 3.4 mi n-e of Butte Meadows. 1432 Comment
  UC600767  Dodecatheon alpinum H. F. Copeland 1929-6-10 1215 Butte Jonesville 1524 Comment
  RSA4135  Dodecatheon alpinum subsp. majus E. B. Copeland 1930-6-26 s.n. Butte Jonesville. 1550 Comment
  CHSC1393  Dodecatheon clevelandii subsp. patulum J. Baynes 1929-4-1 Butte Salmon Hole on Chico Creek. 152 Comment
  UCD38751  Dopatrium junceum Beecher Crampton 1957-9-17 4622 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Station. Comment
  UCD123714  Dopatrium junceum June McCaskill; G. D. Barbe 1990-9-5 4395 Butte experimental fields of Rice Experiment Station, West Hamilton Road at Riceton Highway, north of Biggs. Comment
  CHSC28479  Downingia bella R. A. Schlising 1979-4-8 3355 Butte Richvale vernal pools. 1/4 mile s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  POM59016  Downingia bicornuta E. B. Copeland 1903-5-30 3283 Butte Chico. Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  JEPS103574  Downingia ornatissima var. ornatissima Lowell Ahart 2002-4-14 9486 Butte Area between the Railroad and the Midway Road, 50 yards N of Nelson Dlavo Road, in Nelson. 36 Comment
  CHSC8625  Draba verna D. Patton 1968-3-5 72 Butte Collected ca. 1 1/2 mi e of Chico near edge of The Skyway. 91 Comment
  CAS-BOT-BC41343  Draba verna Lowell Ahart 1975-3-4 s.n. Butte Honcut. Peter Ahart Ranch. 45 Comment
  CAS-BOT-BC401555  Drosera rotundifolia Lowell Ahart 1984-7-19 4756 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City 1750 Comment
  UCD123978  Drosera rotundifolia Barry Rice 2011-7-6 BR 110701 Butte no exact location. 1400 Comment
  UCD170791  Drosera rotundifolia Barry Rice 2016-6-30 BR- 160603 Butte Chico Meadows. 1280 Comment
  CAS-BOT-BC159640  Drymocallis glandulosa var. glandulosa M. S. Taylor 1982-5-2 4393 Butte Pulga serpentine, N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville 487 Comment
  UC1128186  Drymocallis glandulosa var. reflexa P. L. Johannsen 1936-7-17 944 Butte 3 mi se Butte Meadows; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  SEINET10530135  Dryopteris arguta Mary Susan Taylor 1976-3-6 Taylor 1012 Butte Riparian Woodland along Macabe's Creek, ca. 50 ft E of Lumpkin Rd, ca. 1 mi NE of Forbestown Rd, ca. 12 mi E of Orovil le; shaded, wet, cool area. 244 Comment
  CHSC48291  Dysphania ambrosioides Vernon Oswald 1983-7-25 913 Butte River Road at the washout w of Chico. Comment
  CHSC62446  Dysphania botrys L. P. Janeway 1993-9-7 4588 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  CHSC94843  Dysphania botrys Lowell Ahart 2006-10-8 13438 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
  CHSC113149  Dysphania pumilio Lowell Ahart 2013-11-13 19233 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC42963  Dysphania pumilio Lowell Ahart 1987-7-17 5834 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
  SD8071  Dysphania pumilio Daniel Cleveland 1882-6-7 Butte Comment
  CHSC25500  Echinochloa colona L. Ahart 1977-8-14 1547 Butte On the sides of a slough. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC197096  Echinochloa crus-galli Lowell Ahart 1981-9-18 3178 Butte Arch Rock Tunnel, Hwy. 70 550 Comment
  CHSC111170  Echinochloa crus-galli Lowell Ahart 2013-6-18 18803 Butte About 20 yards east of Parking Lot 16, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC28867  Echinochloa crus-galli J. D. Jokerst; T. B. Devine, D. Greenstein 1979-9-13 429 Butte Top of North Table Mt, ca 100 m n of the intersection of east edge of Mt and Cherokee Rd. Comment
  UC1100267  Echinochloa crus-galli Herbert L. Mason 1945-9-19 12741 Butte nw of Pennington Gray Lodge Game Refuge Comment
  CAS-BOT-BC197251  Echinochloa muricata Lowell Ahart 1987-7-3 5758 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  UCD61090  Echinochloa muricata P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  CDA1994  Echinochloa oryzoides M. K. Bellue 1948-1 Butte Biggs. 0 Comment
  UCD61171  Echinochloa oryzoides P. B. Kennedy 1921-8-9 D Butte Rice Station, Biggs. Comment
  UCD61172  Echinochloa oryzoides P. B. Kennedy 1921-9-9 Butte Rice Station, Biggs. Comment
  JEPS104101  Eichhornia crassipes Lowell Ahart 2003-8-24 10542 Butte On the n side of Highway 149, ca 1/4 mi w of Highway 70, ca 5 1/2 mi (air) nw of Oroville. 71 Comment
  CHSC113454  Elatine ambigua Lowell Ahart 2014-8-8 19696 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC78563  Eleocharis Lowell Ahart 2000-8-23 8665 Butte In a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  JEPS98375  Eleocharis acicularis Lowell Ahart 2000-10-21 8711 Butte 2 1/4 air miles N of Biggs (100 ft N of Hamilton Road, about 1/8 mi E of Riceton Road, Rice Experiment Station) 30 Comment
  HSC97770  Eleocharis acicularis L. Ahart 2000-10-2 8699 Butte N of large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi. SE of Ord Ferry, 2 mi. SE of Ordbend, 12 mi. SW of Chico 32 Comment
  CHSC78920  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-10-2 8699 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA127039  Eleocharis bella H. S. Yates 1936-8-13 6102 Butte Butte Meadow. 1341 Comment
  SEINET3441892  Eleocharis bella Unknown 2000-7-11 8577 Butte Feather Falls, Feather Falls, about 4 air miles northeast, sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-Nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the county road 1210 Comment
  SEINET7585843 Image available Eleocharis bella E. B. Copeland 1929-7-28 344 a Butte Jonesville. 1500 Comment
  CAS-BOT-BC113372  Eleocharis engelmannii Lowell Ahart 1980-7-4 2465 Butte Along Forbestown Road. 750 Comment
  CHSC78191  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte South margin of the boggy area in a large spring like area, west of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS94889  Eleocharis engelmannii Lowell Ahart 1998-6-30 8014 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS98441  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  JEPS98701  Eleocharis engelmannii Lowell Ahart 2000-10-21 8712 Butte About 100 feet north of Hamilton Road, about 1/8 mile east of Riceton Road, Rice Experiment Station northwest of Biggs, 2 1/4 miles (air) north of Biggs. 30 Comment
  SEINET8795265 Image available Eleocharis engelmannii J. M. Tucker 1953-8-28 2677 Butte Biggs Rice Experiment Station Comment
  CHSC4399  Eleocharis macrostachya R. Jaegel 1966-5-16 Butte Drainage of golf course lake, Upper Bidwell Park. Comment
  CHSC68431  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1917 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  CHSC8227  Eleocharis macrostachya K. Henegar 1969-4-15 70 Butte At drainage of Horse Shoe Lake, near Municipal Golf Course. 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
  CHSC112340  Eleocharis montevidensis Lowell Ahart 2013-7-9 18837 Butte East side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 13 miles (air) southeast of Oroville. 44 Comment
  JEPS120890  Eleocharis montevidensis Lowell Ahart 2013-7-6 18837 Butte E side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile N and 2.75 miles E of Honcut, about 13 air miles SE of Oroville. Comment
  JEPS98699  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA2608  Eleocharis pachycarpa L. Ahart 2000-5-24 8389 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  JEPS88549  Eleocharis quadrangulata Vernon H. Oswald and Lowell Ahart 1996-7-22 8092 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on s side of Tract 3.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC78567  Eleocharis radicans Lowell Ahart 2000-9-2 8680 A Butte On the margins of and in a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC109751  Eleusine indica Lowell Ahart 2012-10-28 18532 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET10501555  Elodea canadensis Mary Susan Taylor 1975-10-4 Taylor 959 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC38861  Elymus caput-medusae Vernon Oswald 1983-3-30 226 Butte Upper Bidwell Park, Chico, between the s dike of Horseshoe Lake and Upper Park Rd. 97 Comment
  JEPS122068  Elymus elongatus Lowell Ahart 2014-7-13 19657 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CAS-BOT-BC227299  Elymus elymoides Lowell Ahart 1985-6-30 5091 Butte 100 yards south of the road to the Forbestown Res., south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 883 Comment
  CHSC4355  Elymus glaucus R. L. Smith 1966-5-25 8 Butte Butte Creek Canyon 3 mi e of Skyway. Comment
  JEPS88230  Elymus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7732 Butte Riparian Sanctuary Sacramento River National Wildlife Refuge, Llano Seco Unit (n end, U.S. Fish and Wildlife Service parcel between 7 Mile Lane and river) 28 Comment
  CAS-BOT-BC213797  Elymus repens Lowell Ahart 1982-7-10 3668 Butte Found about 1/12 mile west of the Gray Lodge check in station and on the north side of the dirt road, about 12 miles southwest of Gridley 35 Comment
  UCD62619  Elymus stebbinsii subsp. septentrionalis R. Tofsrud 1948-7-1 Butte Between Berry Creek and Bidwell Bar. Comment
  CHSC78406  Elytrigia pontica subsp. pontica Lowell Ahart 2000-7-17 8595 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC46840  Enemion occidentale Kirsten Tarp 1983-4-3 253 Butte S part of county on Swedes Flat Rd. 335 Comment
  CHSC37099  Epilobium brachycarpum L. Ahart 1982-9-13 3818 Butte Near edge of dirt rd that is near Pinkard Creek, ca. 1.8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 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
  UC873163  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durhan and Nelson; Butte Creek 53 Comment
  CHSC12029  Epilobium canum subsp. latifolium R. N. Bowman 1971-9-27 56 Butte Ca. 2.0 mi. se of intersection of Skyway and Coutelenc Rd. and ca. 200 yds. sw of Coutelenc Rd. 121 Comment
  UC873279  Epilobium ciliatum subsp. ciliatum A. A. Heller 1914-7-13 11568 Butte 10 mi e Oroville (stream banks); Mt. Ida Ranch Comment
  JEPS122084  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2014-7-13 19653 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CHSC28438  Epilobium cleistogamum J. D. Jokerst 1979-5-12 285 Butte Adjacent to Vernal Pools, ca. 1.0 mi. S.E. of Chico Muni Airport, E. of Cohasset Hwy. Comment
  JEPS95944  Epilobium cleistogamum Lowell Ahart 1999-5-21 8071 Butte 50 yards north of Evans Reimer Road; about 7/8 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  UC1594715  Epilobium densiflorum Lowell Ahart 1992-8-2 6903 Butte about 3 (air) mi ne Concow Reservoir; Concow Meadow 1097 Comment
  UC1564798  Epilobium hornemannii subsp. hornemannii V. Oswald and L. Ahart 1989-7-12 3850 Butte meadow near headwaters of Big Kimshew Creek (ca 2 air mi sw of Lotts Lake, ca 3 air mi se of Philbrook Reservoir, edge of small stream) 1926 Comment
  CHSC109575  Epilobium minutum L. P. Janeway 2012-6-7 10866 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC70340  Epilobium minutum R. A. Schlising 1980-6-23 3771 Butte SE part of county; 1.2 mi S of S end Sly Creek Reservoir Dam, at Strawberry Valley Creek (=2.2 mi N of La Porte Road). Roadside. 1059 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
  CAS-BOT-BC56941  Equisetum arvense Alice Eastwood 1912-6-15 s.n. Butte Deer Park, Lake Tahoe Region Comment
  CAS-BOT-BC57995  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 457 Comment
  OBI69193  Equisetum hyemale Kari Fisher 2000-11-10 44 Butte Upper Bidwell Park, east of footbridge of golf course, along Chico Creek. 79 Comment
  CAS-BOT-BC57855  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  CHSC34681  Equisetum hyemale subsp. affine M. S. Taylor 1979-3-19 1933 Butte 1.5 mi e of Pulga bridge on Hwy 70 over Feather River, ca. 25 mi n of Oroville. 487 Comment
  CHSC76429  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 Butte On the west side of a pond, area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  JEPS95812  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 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
  CAS-BOT-BC284083  Eragrostis pectinacea var. pectinacea Lowell Ahart 1986-11-14 5469 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville 36 Comment
  CHSC94985  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-10-8 13434 Butte East side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House. 609 Comment
  CAS-BOT-BC278511  Eragrostis pilosa var. pilosa Lowell Ahart 1977-8-14 1492 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC93078  Eremogone cliftonii L. P. Janeway 1994-6-20 4669 Butte Northern High Sierra Nevada. Along Concow Road 3.6 mi north of Rag Dump; between Granite Ridge and Granite Spring. 1371 Comment
  CHSC28608  Erigeron canadensis M. S. Taylor 1977-11-10 1515 Butte At jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 6 mi s of Chico. 36 Comment
  CAS-BOT-BC295418  Erigeron inornatus var. calidipetris E. B. Copeland 1930-8-6 s.n. Butte Jonesville 1550 Comment
  CHSC48148  Erigeron inornatus var. calidipetris Vernon Oswald 1987-7-29 3161 Butte Coon Hollow Rd. 0.2 mi e of the W. Branch of the Feather River, ca. 2.5 mi (air) n of Philbrook Reservoir. At the edge of the road. 1645 Comment
  CHSC3515  Erigeron philadelphicus John Francis 1966-4-6 105 Butte 1.5 miles E. of covered bridge (Honey Run). Beside road. Comment
  POM33314  Erigeron philadelphicus C. C. Bruce 1897-04 2076 Butte Pintz [not confident in locality]. Comment
  SEINET10473751  Erigeron philadelphicus Lowell Ahart 1985-7-24 Ahart 5155 Butte Below the high water line of the Forbestown Res., about 50 yards sough of the Generator, about 4 1/2 miles north-east of Forbestown. Comment
  RSA703149  Eriochloa acuminata var. acuminata L. Ahart 2004-8-30 11397 Butte On the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley. 28 Comment
  SEINET5495493  Eriodictyon californicum R. McKee, H. Westover 1918-6-5 s.n. Butte Paradise Comment
  CAS-BOT-BC259397  Eriogonum luteolum Lowell Ahart 1988-8-10 6171 Butte Along Poe Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap 487 Comment
  CAS-BOT-BC259403  Eriogonum luteolum John Thomas Howell 1975-6-15 51075 Butte Butte Creek near Chico. (On Skyway btw. Chico & Paradise) 60 Comment
  UCD100307  Eriogonum luteolum P. Rodriguez-Rojo; D. Sanchez-Mata 1997-8-16 s.n. Butte Magalia. Westside of Magalia Res. 310 Comment
  UCR270588  Eriogonum marifolium John F. Emmel 2001-7-24 1737 Butte Northern Sierra Nevada Mtns., headwaters area of Butte Creek, c, 4 air mi east of Jonesville 1829 Comment
  SEINET5043171  Eriogonum marifolium Unknown 1930-7-12 410 Butte Above Jonesville Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  CHSC33983  Eriogonum nudum var. pubiflorum S. Posner 1972-10-24 Butte Between dredger tailings, 150 yds. south of Humbug Rd., 3 miles from Butte Creek Rock Co. Chico. Comment
  CHSC39138  Eriogonum nudum var. pubiflorum R. A. Schlising 1981-6-11 4137 Butte Plumas National Forest; serpentine outcrop along Coyote Gap Road, ca. 0.5 mi s of Coyote Gap. 1219 Comment
  UC426904  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 412 Butte along Butte Creek Jonesville, Butte Creek 1500 Comment
  SEINET10479534  Eriogonum nudum var. pubiflorum Mary Susan Taylor 1980-9-19 Taylor 3339 Butte In serpentine, ca. 100 ft S of Coutelenc Rd, ca. 500 ft E of jct with the Skyway, Magalia. Comment
  SEINET5333734  Eriogonum roseum R. R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC11922  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville. Ridge between Jones and North Willow Creeks. 1700 Comment
  RSA0005154  Eriogonum umbellatum var. ahartii James L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga. Comment
  CHSC30842  Eriogonum ursinum var. ursinum M. S. Taylor; L. Ahart, J. Jokerst 1980-8-2 3218 Butte Comment
  JEPS115266  Eriogonum vimineum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CAS-BOT-BC262343  Eriogonum vimineum Lowell Ahart 1981-8-11 3026 Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10474637  Eriophyllum lanatum Mary Susan Taylor 1975-4-11 Taylor 394 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  SEINET10474638  Eriophyllum lanatum Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5519 Butte outcrop, 0.6 mi S of Coyote Gap, on open knoll at loop in French Creek Road, ca. 25 air mi NE of Oroville. Comment
  CDA4964  Eriophyllum lanatum var. achilleoides T. C. Fuller 1958-7-7 1909 Butte Highway 40 Alt., 0.1 mile north of bridge, North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CDA13336  Eriophyllum lanatum var. croceum G. F. Hrusa, T. D. Wilfred 1996-7-9 13182 Butte Sierra Nevada; On USFS 22N89 approx. 0.3 m. from intersection of Hwy 162. Comment
  UC1609157  Eriophyllum lanatum var. croceum Vernon H. Oswald and Lowell Ahart 1993-6-22 5557 Butte Head Dam Rd (120C) 0.5 mi nw Powellton Rd. (between Powellton and Clear Creek, n of De Sabla) 1091 Comment
  CHSC30728  Eriophyllum lanatum var. grandiflorum M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  RSA302657  Eriophyllum lanatum var. grandiflorum J. R. Shevock 1972-5-19 1765 Butte Highway 70, north of Lake Oroville. 91 Comment
  UC1118260  Eriophyllum lanatum var. grandiflorum J. E. Sowder 1933-6-6 80 Butte 0.5 mi nw of Nelson's Bar; Chico Quadrangle 457 Comment
  UC175162  Eriophyllum lanatum var. grandiflorum A. A. Heller 1913-5-28 10763 Butte 8 mi n Oroville (ditch along Table Mountain); Table Mountain 182 Comment
  UC725409  Eriophyllum lanatum var. grandiflorum A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  CHSC100985  Erodium cicutarium L. P. Janeway 2008-3-18 9239 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  CHSC99320  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC21251  Erodium moschatum M. S. Taylor 1975-3-25 420 Butte In weed field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  UC764741  Eryngium castrense R. F. Hoover 1936-5-20 1156 Butte 8 mi. n. Oroville Comment
  UC874922  Eryngium castrense Lewis S. Rose 1939-6-5 39198 Butte Honcut 30 Comment
  CHSC105163  Erythranthe bicolor Christopher T. Ivey 2007-5-22 369 Butte Humboldt Rd, between Hwy 32 and town of Butte Meadows, along N side of road in gravelly bank. 1219 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
  CHSC1760  Erythranthe cardinalis V. Holt 1932-10-28 Butte Near Richardson Springs. 152 Comment
  CHSC49002  Erythranthe filicifolia Vernon Oswald 1986-4-26 1981 Butte Along the Western Pacific RR between Pulga and Poe Dam. 438 Comment
  CHSC110632  Erythranthe glaucescens Christopher T. Ivey 2013-5-9 380 Butte Pulga Road, near intersection with Hwy. 70. 490 Comment
  CHSC27272  Erythranthe glaucescens P. Moyer 1972-4-16 173 Butte CSUC Campus. S. bank Chico Ck., e of Warner St. Bridge. 60 Comment
  CHSC44680  Erythranthe glaucescens R. Banchero 1980-4-13 114 Butte Along the bluffs 0.7 mi NW of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC44820  Erythranthe glaucescens R. Banchero 1980-6-2 183 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  CHSC51924  Erythranthe glaucescens S. B. Collom 1988-4-25 11 Butte Chico: 100 yds E from 5th Ave bridge in Lindo Channel, on N side. Comment
  CHSC10851  Erythranthe guttata Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC110630  Erythranthe guttata Christopher T. Ivey; Jenn Coughlan 2013-5-17 381 Butte Centerville Rd. about 2 km NE of Honey Run bridge. 115 Comment
  CHSC44943  Erythranthe guttata J. Marr 1988-3-19 14 Butte 2.5 mi on w side of Cherokee Rd, ca. 6 mi n of Oroville. 342 Comment
  CHSC65903  Erythranthe guttata Vernon H. Oswald 1996-4-20 7399 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 mile Lane and the Sacramento River. Sacramento Valley. 32 Comment
  CAS-BOT-BC151462  Erythranthe latidens A. A. Heller 1914-5-1 11343 Butte Chico-Hamilton road 6 miles from Chico Comment
  CHSC38702  Erythranthe nasuta Vernon Oswald 1983-5-7 443 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.7 mi e of the power lines. 353 Comment
  CHSC44675  Erythranthe nasuta R. Banchero 1980-4-13 115 Butte Along the bluffs 0.7 mi NE of the Covered Bridge, ca 6.8 mi E of Chico. 304 Comment
  CHSC44782  Erythranthe nasuta R. Banchero 1980-3-23 76 Butte Along Crown Point Rd, 0.5 mi from its jct with Hwy 32. 539 Comment
  SEINET8381874  Erythranthe primuloides C. E. Wickstrom 1964-9-12 62 Butte at Butte Meadows ca. 160 ft. sw of where stream goes under Scout Rd. ca. 1.5 mi. from turn off Humboldt Rd.; Chico. 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
  CHSC38878  Erythronium multiscapideum Vernon Oswald 1983-3-13 158 Butte Upper Bidwell Park, Chico, 100 ft. s of Upper Park Rd. at the w entrance to Brown's Hole (2.6 mi e of the power lines). 231 Comment
  CHSC88640  Erythronium multiscapideum Linnea Hanson 1983-4-6 188 Butte Plumas National Forest. Above Concow. 822 Comment
  SEINET10528912  Erythronium multiscapideum Nelson 1979-4-24 NELSON s.n. 1979 Butte Population at vicinity of intersection of Coutelene Rd. and Skyway, 0.25 mi n of Magalia. Soil Serpentine. 3000 feet. 915 Comment
  POM197058  Eschscholzia caespitosa subsp. caespitosa H. F. Copeland 1929-5-4 243 Butte Canyon of Chico Creek. Comment
  CAS-BOT-BC402963  Eschscholzia californica Lowell Ahart 1985-3-24 4860 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  UC1303043  Eschscholzia lobbii A. A. Heller 1928-4-30 14537 Butte about 4 mi below Paradise (along the Neal road) Comment
  CAS-BOT-BC419500  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  UC85481  Eschscholzia lobbii Mrs. R. M. Austin Feb. 1896 Butte Chico Plains Comment
  CHSC95098  Euonymus occidentalis var. occidentalis L. P. Janeway 2006-8-6 8831 Butte Northern High Sierra Nevada. Nea road along west side of lower Pinkard Creek, 1.2 road mi north of Lost Creek Reservoir dam. Along small creeklet near road. 1021 Comment
  CHSC39495  Euphorbia crenulata Lowell Ahart 1983-6-21 4069 Butte Along the edge of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 400 Comment
  JEPS122254  Euphorbia maculata Lowell Ahart 2014-9-23 19879 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  CHSC115348  Euphorbia peplus Lowell Ahart 2015-3-24 19959 Butte Along the Humboldt Trail, southeast part of Upper Bidwell Park, about 100 yards south of where the trail comes out to the old road and Highway 32, on the west side of the old road, about 6 miles (air) northeast of Chico. 368 Comment
  JEPS119577  Euphorbia peplus Lowell Ahart 2012-4-17 17877 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  UC1557929  Eurybia radulina J. Semple, S. Heard 1986-8-14 8418 Butte between Stirling City and Butte Meadows (ne of Chico) just ne of Inskip Comment
  CHSC26621  Euthamia occidentalis M. P. Hayes 1977-9-24 119 Butte In drainage of Little Butte Creek where Little Butte Creek intersects road Z (Chico-Butte City Highway). Along edge of road. 30 Comment
  CHSC112688  Festuca arundinacea Lowell Ahart 2013-5-27 18717 Butte On the east side of Black Bart Road, about 3/4 mile (by road) southwest from the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  SEINET10508442  Festuca megalura Mary Susan Taylor 1978-5-7 Taylor 1595 Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CHSC76331  Festuca occidentalis G. F. Hrusa 1997-5-29 13807 Butte Sierra Nevada. Slopes on N side of Sucker Run Creek, +/- 1.5 mi. SSE of Feather Falls townsite. [Original Lat./Long. on label is '39 34 N; 121 14 W']. 770 Comment
  SEINET10662355  Festuca occidentalis Lowell Ahart 2007-5-29 Ahart 13942 Butte T21N, R6E, Section 28. On the south side of the Dome Trail, trail leads to the Middle Fork of the Feather River, at the trailhead which is 3/10 mi E of Bean Creek Road, about 2 miles (air) NE of Big Bald Rock, about 16 mi (air) NE of Oroville. 844 Comment
  UC1609518  Festuca occidentalis Lowell Ahart 1993-6-16 6970 Butte about 3.5 (air) mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC61369  Festuca subulata Lowell Ahart 1993-7-23 7107 Butte On the sides of a stream, south of Fall River, about 1/8 mile south of the campgrounds on the large gravel bar along Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  SEINET10662360  Festuca subuliflora Lowell Ahart 2007-5-22 Ahart 13915 Butte T21N, R6E, Section 28. About 1/8 miles south of Bald Rock Dome, around a small stream along the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 844 Comment
  CHSC76015  Fimbristylis autumnalis Lowell Ahart; Vernon H. Oswald 1999-8-13 8145 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
  JEPS102419  Foeniculum vulgare Lowell Ahart 2001-6-13 8816 Butte 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) SW of Gridley. 22 Comment
  SEINET10871289  Fragaria vesca subsp. californica Mary Susan Taylor 1976-3-16 Taylor 1026 Butte Scattered in Riparian Woodland, on S side of Butte Creek, ca. 500 m W of Honey Run Covered Bridge, ca. 11 mi E of Chico. 152 Comment
  CAS-BOT-BC62947  Frangula californica subsp. tomentella Lowell Ahart 1983-6-21 4100 Butte Along the edge of Bloomer Hill Road, about 3 mi. nw. of the Oroville Quincy Highway, about 16 mi. nw. of Oroville. 700 Comment
  SBBG32407  Frangula californica subsp. tomentella L. S. Rose 1968-6-12 Butte Feather River Cyn, Pulga 487 Comment
  CAS-BOT-BC55649  Frangula purshiana A. A. Heller 1919-5-17 13157 Butte Banks of the Feather river near Stirling Comment
  CHSC33277  Frangula purshiana R. A. Schlising 1981-6-28 4118 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek on E side andesitic Table Mt. 1767 Comment
  POM76346  Fraxinus dipetala C. C. Bruce 1898-03 2471 Butte Foothills [no specific locality given] Comment
  CHSC88632  Fritillaria eastwoodiae Linnea Hanson 1987-4-15 293 Butte Plumas National Forest. Magalia Serpentine. 701 Comment
  CHSC29033  Fritillaria micrantha J. D. Jokerst 1980-3-28 525 Butte E of the northern most portion of North Table Mt. 365 Comment
  CAS-BOT-BC505285  Fritillaria micrantha Lowell Ahart 1982-4-8 3271 Butte Above the road cut bank along Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, about 7 miles north of Bangor 350 Comment
  CAS-BOT-BC130427  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  CHSC2285  Fritillaria recurva P. Delaplane 1965-5-4 53 Butte On south side of Concow Road, south side of Lake Concow. 1219 Comment
  CHSC2286  Fritillaria recurva N. Maxwell 1929-3-17 Butte Forest Ranch. 548 Comment
  CAS-BOT-BC508150  Fritillaria recurva A. A. Heller 1919-5-17 s.n. Butte Banks of the Feather river near Stirling Comment
  CHSC4070  Galium aparine H. E. Lindahl 1967-3-25 5 Butte 1/2 mi. S and 100 yds. W of forks of dry creek Pentz. 152 Comment
  CHSC4192  Galium aparine L. R. Alexander 1967-4-7 14 Butte Found in abundance ca. 75 yds. S of covered bridge on Humbug Rd. 91 Comment
  CHSC86591  Galium aparine L. P. Janeway; Barbara Castro, Eric Ryan 2003-4-19 7759 Butte Sacramento Valley. City of Chico residential area; West 12th Street between Broadway and Oakdale. 59 Comment
  SEINET10500623  Galium aparine Mary Susan Taylor 1975-3-25 Taylor 427 Butte Chico. Comment
  UC1586559  Galium aparine Lowell Ahart 1991-4-19 6646 Butte steep slope on w side North Honcut Creek (about 1 1/2 mi n and 2 3/4 mi e of Honcut, about 12 mi se of Oroville); Peter Ahart Ranch 45 Comment
  UCR190819  Galium aparine Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  POM196538  Galium bifolium H. F. Copeland 1929-6-12 1212 Butte Jonesville. 1524 Comment
  CHSC51914  Galium grayanum var. grayanum L. P. Janeway; R. A. Schlising, B. Castro 1988-7-30 3139 Butte Ridge SE from Snow Mtn. 2103 Comment
  CHSC61648  Galium grayanum var. grayanum Lowell Ahart 1993-9-8 7165 Butte On the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CHSC90959  Galium murale Lowell Ahart 2005-4-14 11705 Butte At the base of the railroad roadbed, east side of the railroad tracks, south of the railroad bridge, north of Spruce Street, Gridley. 28 Comment
  SEINET12318326  Galium nuttallii Unknown 1977-1 79 Butte ca 9 km N of Oroville 180 Comment
  UC1143092  Galium porrigens C. G. Albertus 1933-6-6 23 Butte 1/4 mi w Pentz; Chico Quadrangle 137 Comment
  CHSC42178  Galium porrigens var. tenue Ellen J. Ramsey 1986-3-18 3 Butte S band of Butte Creek ca. 150 yd WSW of Covered Bridge, ca. 7 mi E of Chico. 91 Comment
  CHSC55586  Galium porrigens var. tenue Dan Morgan 1991-4-21 19 Butte Indian Springs Rd., .3 mi W of Neal Rd., Paradise. 243 Comment
  JEPS52735  Galium porrigens var. tenue Lauramay T. Dempster 1964-7-24 4043 Butte 3 mi s Nimshew 487 Comment
  SEINET10500744  Galium sparsiflorum subsp. glabrius Mary Susan Taylor 1980-9-12 Taylor 3332 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  CHSC26834  Galium trifidum var. pacificum M. S. Taylor; M. Hayes 1978-6-24 1638 Butte On Ernies Island in Butte creek at its jct with Old Humboldt Rd, ca. 1/2 mi W of Butte Meadows. Comment
  CHSC51371  Galium trifidum var. pacificum Vernon Oswald 1990-9-11 4449 Butte Marsh located about 1.5 miles south-southeast of Brush Creek. 960 Comment
  CDA42201  Galium triflorum T. C. Fuller 1962-7-12 9172 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC45675  Gamochaeta argyrinea Vernon Oswald 1986-5-12 2031 Butte Northeast side of Paradise Lake. 780 Comment
  JEPS127202  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte About 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  RSA129645  Gastridium phleoides P. L. Johannsen 1935-5-27 677 Butte 4 miles SE of Chico. 84 Comment
  RSA716153  Gastridium phleoides L. Ahart 2005-7-13 12149 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS110117  Gastridium ventricosum Lowell Ahart 2006-5-8 12611 Butte Grassy slope, 100 yards west of a small stream, northeast of Phantom Falls, about 1/2 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS118048  Gaultheria ovatifolia Lowell Ahart 2011-8-23 17653 Butte On the west edge of the large meadow, Pinkard Creek flows through the meadow, 40 yards north of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills 1133 Comment
  UCD103639  Gayophytum diffusum subsp. parviflorum Cameron Blake; Jane Turner 1962-6-18 SK and F 998 Butte Mono Hot Springs. 1981 Comment
  SEINET10453075  Gayophytum heterozygum Mary Susan Taylor 1978-7-18 Taylor 1672 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CAS-BOT-BC208059  Genista monspessulana Richard R. Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte Mountain Road 1000 Comment
  UCD105746  Genista monspessulana Michael A. Vincent; Ethan H. Freid 1998-4-6 8109 Butte Table Mountain. Along Cherokee Rd. about 2 miles above Oregon Gulch Rd. Comment
  CHSC63817  Gentianopsis simplex S. C. Morey 1983-7-23 593 Butte Cherry Hil Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC77710  Geranium dissectum Anna Pinsky 1997-4-24 19 Butte Chico, Upper Bidwell Park, Salmon Hole, 100 ft. above Big Chico Creek. Comment
  RSA0045624  Geranium dissectum Lowell A. Ahart 2012-4-30 17926 Butte 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
  CHSC64211  Geum macrophyllum S. C. Morey 1983-8-3 697 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CDA40045  Gilia capitata subsp. mediomontana L. Ahart 2006-5-19 12637 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. Comment
  CHSC4356  Gilia capitata subsp. mediomontana R. L. Smith 1966-5-28 Butte 3 mi. nw De Sabla. Comment
  CHSC29707  Gilia capitata subsp. pedemontana J. D. Jokerst 1980-4-21 627 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC40024  Gilia tricolor R. M. Austin 1896-5-1 92 Butte Plains east of Chico. Comment
  CHSC45947  Gilia tricolor Lowell Ahart 1976-4-14 1063 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC90252  Gilia tricolor Camela J. Ott 1989-3-14 1 Butte Population in vic. of Salmon Hole, upper Bidwell Park, ca. 3 mi e of Chico Municipal Golf Course. 106 Comment
  HSC45825  Gilia tricolor J. P. Smith, J. O. Sawyer 1973-4-14 6049 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  SEINET7042708  Gilia tricolor A. G. Vestal 1963-5-9 s.n. Butte At lower slope of lava mesa. Road to Chico. Ca. 11 miles southeast of Chico. Nelson quadrangle UTM Zone 10, 604825mE, 4383603mN. Comment
  SEINET10460571  Githopsis pulchella subsp. campestris Gray 1885-1 GRAY s.n. Butte Chico. Comment
  SEINET10873415  Githopsis pulchella subsp. campestris Austin AUSTIN s.n. Butte Comment
  CHSC116983  Githopsis specularioides Lowell Ahart 2016-6-4 20932 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC12169  Githopsis specularioides Lowell Ahart 1973-5-6 Butte Swedes Flat Road, near Bangor. 457 Comment
  JEPS108821  Githopsis specularioides Lowell Ahart 2006-5-8 12600 Butte Steep bank on the south side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  CHSC51269  Glinus lotoides Lowell Ahart 1990-10-5 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 228 Comment
  CHSC51368  Glinus lotoides Vernon Oswald; Lowell Ahart 1990-10-11 4460 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. Occasional plants on drying mud on the bed of Dark Canyon Creek, below the high-water line of the lake. 243 Comment
  CDA13341  Glyceria elata G. F. Hrusa, T. D. Wilfred 1996-7-9 13189 Butte Sierra Nevada; Wet, deeply shaded springline above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Individuals to 2 m. tall. Coniferous forest, w/ generally dry understory. Comment
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 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
  UC129187  Goodyera oblongifolia Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10470040  Goodyera oblongifolia Mary Susan Taylor 1978-9-9 Taylor 1908 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  JEPS32707  Gratiola ebracteata Lewis S. Rose 1963-6-5 63142 Butte 3 mi w Palermo 45 Comment
  UCR219266  Grindelia hirsutula var. davyi George K. Helmkamp, E. A. Helmkamp 2009-9-5 15587 Butte Sacramento Valley, Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg. ) of Gridley 34 Comment
  CHSC35081  Hackelia californica R. A. Schlising; R. Banchero 1980-7-14 3894 Butte 4.2 mi N of Inskip along Skyway (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). 1511 Comment
  UCD20439  Hamamelis mollis John Gross 1982-12-27 HN 144 Butte Butte County, at Lake Oroville, beside Berry Creek. Comment
  CHSC82422  Hedypnois cretica Lowell Ahart 2002-5-7 9644 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
  SEINET10475227  Helenium bigelovii Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4203 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
  SEINET11830212  Helenium bigelovii Unknown 1966-1 432 Butte 0.67 mi SE of Little Bald Rock on N side of Bean Creek Rd Comment
  CHSC28507  Helenium puberulum M. S. Taylor; J. D. Jokerst 1979-10-13 2255 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps) ca. 5 mi e of Paradise, ca. .8 mi n of its jct with Concow Rd. 426 Comment
  UC1562301  Helenium puberulum Lowell Ahart 1990-7-15 6555 Butte about 1/2 mi nw Enterprise Bridge (w of the Enterprise Boat Launch, below the high water line of Lake Oroville, on n side of old paved road to Feather Falls); Lake Oroville 268 Comment
  UC1609017  Helianthella californica subsp. nevadensis Lowell Ahart 1993-9-8 7171 Butte on top of ridge about 1 mi e Snow Mountain 2103 Comment
  CHSC45680  Helianthella californica var. nevadensis Vernon Oswald 1984-5-9 1175 Butte Between Chico and Forest Ranch on an abandoned section of old Calif. Hwy 32, 9.9 mi n-e of Calif. Hwy 99. 487 Comment
  JEPS95933  Heliotropium europaeum Lowell Ahart 1999-8-13 8163 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
  CHSC51358  Helminthotheca echioides Vernon Oswald 1990-9-20 4452 Butte Portion of Rancho Bosquejo. Sacramento River at the west end of Cana Hwy. Along the river. 48 Comment
  CHSC33891  Hemizonella minima M. S. Taylor 1981-5-13 3700 Butte On ridge above Foreman Creek, ca. 0.5 mi w of 23N15.5, ca. 1.5 mi s of its jct with Four Trees Rd, ca. 2 air mi w of Elks Retreat on Oroville-Quincy Hwy. 1310 Comment
  CAS-BOT-BC309785  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte Near Durham Comment
  SD3460  Heracleum maximum E. B. Copeland 1930-6-29 Butte Jonesville 1500 Comment
  RSA755000  Herniaria hirsuta subsp. hirsuta L. Ahart 2008-5-21 14772 Butte Lake Oroville, north and south side of the South Fork of the Feather River, about 100 yards west of where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET11842157  Hesperevax caulescens Unknown 1979-1 17 Butte ca 0.5 mi N of Pine Creek, NW of Singer Creek, 7 mi NW of Nord on Cana-Pine Creek Road 56 Comment
  CAS-BOT-BC175998  Hesperolinon californicum Lowell Ahart 1977-5-11 154 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC48601  Hesperolinon micranthum Vernon Oswald 1985-5-2 1743 Butte Spur road on the w side of Hsy 32 opposite Crown Point Rd. s of Forest Ranch. Growing on a bare bank of red dirt beside the road. 585 Comment
  JEPS127025  Hesperolinon micranthum Lowell Ahart 2016-6-4 20934 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
  CDA36314  Heteranthera limosa CDFA Staff 1988-1 Butte Biggs; Rice Experimental Station. 0 Comment
  SEINET10469503  Heteranthera limosa Lowell Ahart 1991-7-21 Ahart 6669 Butte About 1/4 mile south of Butte City Highway, west of the Rice Experiment Station, about 3 miles west of Highway 70, north of Biggs. Agricultural. T19N R2E S34. 30 Comment
  CHSC101829  Heterocodon rariflorum Lowell Ahart 2009-5-23 15761 Butte South of a small drainage, about 30 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC69042  Heterocodon rariflorum Lowell Ahart 1997-8-1 7776 Butte Near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC96245  Heterocodon rariflorum R. Fischer 2006-5-27 995 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing on edge of seasonal stream drainage on the overlook trail. 518 Comment
  CHSC30952  Heteromeles arbutifolia L. Ahart 1980-7-4 2455 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  CHSC39308  Heteromeles arbutifolia Lowell Ahart 1983-6-26 4113 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. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  SEINET267154  Heteromeles arbutifolia T. A. Ranker, P. G. Trapp 1994-6-17 1617 Butte Pence Road south of Paradise. 395 Comment
  CAS-BOT-BC310252  Heterotheca John Thomas Howell 1959-9-26 35088 Butte Cuesta Power House, N. Fk. Feather River 426 Comment
  CHSC113981  Heterotheca grandiflora Lowell Ahart 2014-11-17 19912 Butte Just below the high water line of Lake Oroville, about 150 yards southeast of the Enterprise Boat Launch Area, parking area, about 11 miles (air) northeast of Oroville. 253 Comment
  UCR88744  Heterotheca oregona J. T. Howell 1959-9-20 34620 Butte eastern outskirts of Oroville on level of Feather River 61 Comment
  CHSC26706  Heterotheca oregona var. compacta Hayes; Schlising 1977-10-23 144 Butte In Lindo Channel ca. 180 m w of its intersection with Mangrove Avenue. 35 Comment
  RSA0062970  Heuchera micrantha var. erubescens M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  UC897798  Hieracium albiflorum A. A. Heller 1917-7-26 12848 Butte Butte Meadows 1402 Comment
  RSA0112643  Holocarpha virgata subsp. virgata Lowell Ahart 2013-9-5 19022 Butte On the west side of La Porte Road, about 1/4 mile southwest of Dunstone Drive, about 2 1/3 miles (air) northeast of Honcut. 40 Comment
  SEINET10507464  Hordeum brachyantherum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4154 Butte T20N R5E ne sec 15. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi e of its jct with East Fork Canyon Creek, ca. 15 mi ne of Oroville. Foothill Woodland; 600 Comment
  CHSC102174  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2009-5-30 15778 Butte On dry soil, broad open drainage in oak woodland, about 60 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC44456  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1988-6-21 6059 Butte Near the Poe Power House Road, about 1 mile south of Jarbo Gap. 609 Comment
  SEINET4343726 Image available Hordeum murinum Unknown 2009-5-8 15671 Butte Riparian Woodland; On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC2155  Hordeum vulgare H. Silberman; D. Isaac 1949-5-17 Butte Manzanita Ave., 4 mi. E. of Chico. 60 Comment
  JEPS94725  Horkelia californica subsp. dissita Lowell Ahart 1998-6-30 8012 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC43055  Horkelia fusca subsp. parviflora L. P. Janeway 1987-7-5 2469 Butte At jct of Philbrook Rd and Humbug Summit Rd. Between road and creeklet. 1554 Comment
  CHSC46590  Horkelia fusca subsp. tenella Vernon H. Oswald 1989-7-4 3838 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Edge of meadow. 1767 Comment
  CAS-BOT-BC536252  Horkelia tridentata var. tridentata H. F. Copeland 1929-6-9 1226 Butte Jonesville 1524 Comment
  CHSC61316  Hosackia crassifolia var. crassifolia Lowell Ahart 1993-7-29 7126 Butte Along a logging road, about 1/8 mile north-west of the Snow Mine, about 2 1/2 miles north-east of the Bald Mountain, about 6 1/2 miles north-east of Stirling City. 1676 Comment
  CHSC38501  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1983-6-14 683 Butte Upper Bidwell Park, Chico, near Yahi Trail e of Brown's Hole. Growing on the edge of Chico Creek. 201 Comment
  CHSC52441  Hosackia oblongifolia var. oblongifolia L. P. Janeway 1987-6-27 2359 Butte Mdw on E slope of Bald Mtn along the Concow Rd. 1694 Comment
  CHSC43665  Hosackia pinnata Vernon Oswald 1987-5-28 2934 Butte Jordan Hill Rd. 0.1 mi s of the road to Sawmill Pk. Lookout. 902 Comment
  CHSC33103  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-15 3749 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  JEPS118655  Hydrocotyle sibthorpioides L. P. Janeway 2010-6-9 9994 Butte Sacramento Valley. Chico; southeast corner of Citrus Avenue and Mansion Avenue, area between sidewalk and curb. Chico 7.5' quad. Comment
  CHSC72251  Hypericum anagalloides Lowell Ahart 1998-9-11 8054 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  JEPS93795  Hypericum concinnum Vernon H. Oswald 1998-7-1 9244 Butte along spur road intersecting Rim Road 4.1 mi n of Jarbo Gap (1 air mi w of Pulga and 0.4 mi w of Rim Road) 853 Comment
  CHSC41258  Hypericum formosum var. scouleri S. C. Morey 1983-7-21 477 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS87158  Hypericum formosum var. scouleri Lowell Ahart 1992-8-2 6899 Butte ca. 3 (air) mi. n.e. Concow Reservoir (Concow Meadow, bottom of Concow Creek); Concow Meadow, Concow Creek 1097 Comment
  CHSC58922  Hypericum mutilum Lowell Ahart 1992-7-23 6829 Butte Growing on wet soil on the north side of the Termalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CAS-BOT-BC312933  Hypochaeris glabra John Thomas Howell 1961-9-22 36718 Butte Bank of Feather River, Oroville 53 Comment
  CHSC103956  Hypochaeris glabra Lowell Ahart 2010-5-23 16733 Butte On the west side of Pine trail, about 40 yards west of Highway 32, about 9 miles (air) northeast of Chico. 478 Comment
  CHSC363  Hypochaeris glabra M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  POM195674  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  CAS-BOT-BC133564  Iris hartwegii Mrs. C. C. Bruce 1898-5-1 2408 Butte Doe Mill Comment
  RSA136682  Iris hartwegii Lee W. Lenz, E. K. Balls 1957-5-22 22503 Butte Feather River Highway U.S. 40 alt., 18 miles northeast from Oroville 701 Comment
  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
  CHSC57536  Iris macrosiphon Suzanne Hermansen 1991-4-20 24 Butte Ca. 1 mi s of jct of Pearson Rd. and Edgewood Ln. Paradise. 1/4 mi w of Dry Creek. 505 Comment
  CHSC115682  Iris tenuissima subsp. tenuissima Emily Meigs Doe 2015-4-23 24 Butte Northern HighSierra Nevada. Plumas National Forest. About 2.7 miles west-northwest of Forbestown. Near Road 19N19, approx. 0.25 miles north of its intersection with Ponderosa Way. 731 Comment
  CHSC44625  Isoetes bolanderi Vernon Oswald; Lowell Ahart 1987-7-1 3064 Butte Lily Pond' located ca. 0.6 mi (air) w of Butte Creek House and 0.25 mi s of Humbug Rd., ca. 2.75 mi (air) se of Jonesville. 1813 Comment
  JEPS127197  Isoetes howellii Lowell Ahart 2016-5-30 20881 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  UC111604  Isoetes howellii Dr. E. B. Copeland 1903-5-30 3281 Butte Chico Comment
  CHSC116702  Isoetes nuttallii Lowell Ahart 2016-5-24 20850 Butte West side of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC29222  Isoetes nuttallii M. S. Taylor 1980-3-28 2404 Butte Just e of Chico, between Humboldt Rd, and Hwy 32, ca. 1/4 mi e of Forest Ave, ca. 1 1/4 mi e of Hwy 99. 76 Comment
  CAS-BOT-BC61867  Isoetes nuttallii Vernon Oswald; Lowell Ahart 1990-4-9 4158 Butte Feather Falls on Fall River near its junction with the Middle Fork of Lake Oroville 548 Comment
  SEINET10530329  Isoetes nuttallii Mary Susan Taylor 1980-5-15 Taylor 2635 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
  CAS-BOT-BC340242  Jensia rammii Lowell Ahart 1979-4-19 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC3365  Juglans californica var. hindsii M. Gregg 1966-4-11 90 Butte On the Nature Trail in Bidwell Park, Chico. Just off of E. 8th St. Comment
  CAS-BOT-BC110011  Juncus Mrs. R. M. Austin 1883-1-1 s.n. Butte Unspecified. Comment
  CHSC36895  Juncus acuminatus L. Ahart 1982-7-18 3680 Butte Along edge of North Honcut Creek, Peter Ahart Ranch, ca. 1 mi n and 2 1/2 mi e of Honcut. 50 Comment
  CHSC49602  Juncus acuminatus Vernon Oswald 1985-5-20 1774 Butte Along Thermalito Afterbay near Hwy 162 ca. 1 mi e of Hwy 99. 35 Comment
  CHSC97062  Juncus acuminatus Lowell Ahart 2007-7-27 14396 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CHSC7194  Juncus balticus M. I. Moore 1969-4-26 16 Butte Upper Bidwell Park, ca. 1000 yds. nw of Salmon Hole - Big Chico Creek. 106 Comment
  CDA37167  Juncus bufonius CDFA Staff 2010-6-7 s.n. Butte Palermo Road and Highway 70. 0 Comment
  CHSC113522  Juncus bufonius var. bufonius Lowell Ahart 2014-7-7 19593 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC94621  Juncus bufonius var. bufonius Lowell Ahart 2006-9-11 13300 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
  CHSC96860  Juncus bufonius var. bufonius Lowell Ahart 2007-6-3 13970 Butte West of the bridge across Concow Creek, west side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  RSA729997  Juncus bufonius var. bufonius L. Ahart 2007-7-3 13970 Butte West of the bridge across Concow creek, west side of jordan hill road, about 1.5 mi. (air) southwest of Concow Reservoir. 415 Comment
  UC1609090  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte about 1 1/2 mi n and 3 mi e of Honcut (about 12 mi se of Oroville, on w side of Dunstone Road); Dunstone Road 60 Comment
  CHSC6157  Juncus capitatus E. Parreno 1968-4-19 67 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  CHSC37069  Juncus covillei L. Ahart 1982-9-29 3839 Butte Banks and edges of Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi nw of Strawberry Valley. 1200 Comment
  CHSC116305  Juncus diffusissimus Lowell Ahart 2015-11-18 20665 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  CHSC96940  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 53 Comment
  JEPS113833  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-2 14248 Butte On the north side a water ditch, about 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville 166 Comment
  RSA730000  Juncus effusus subsp. pacificus L. Ahart, L. P. Janeway, Linnea Hanson 2007-7-13 14000 Butte About 30 yards east of a poor dirt road, about 1 1/2 milea (air) northeast of Clipper Mills. 1046 Comment
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Mar 20 2009
  CHSC94611  Juncus ensifolius Lowell Ahart 2006-9-13 13317 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CHSC96319  Juncus ensifolius L. P. Janeway 2006-8-12 8843 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  JEPS98315  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte 4 air mi N[?]E of Feather Falls (dirt rd, 100 yds N of Lumpkin Ridge Rd, upper W branch Know-nothing Crk, 1 mi SW of int of Lumpkin R Rd, rd to Fall River, and the County Rd) 1219 Comment
  RSA742781  Juncus ensifolius L. Ahart 2008-7-23 15142 Butte About 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
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Feb 2 2010
  SEINET10938237  Juncus ensifolius Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4137 Butte T20N R5E se/ne sec 10. Along edge of East Fork Canyon Creek, near Ponderosa Way (Big Ridge Rd), ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  SEINET11787692  Juncus ensifolius J. D. Jokerst, Schlising, R. A. 1982-1 1650 Butte W edge of Skyway 1.1 mi S of Innskip 1433 Comment
  CHSC59020  Juncus hemiendytus var. hemiendytus Lowell Ahart 1992-7-26 6860 Butte In a small meadow, about 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  POM183199  Juncus howellii H. F. Copeland 1930-7-28 1371 Butte Neighborhood of Jonesville. 1829 Comment
  UC842621  Juncus howellii A. A. Heller 1917-7-28 12837 Butte Butte Meadows 1280 Comment
  SEINET11787184  Juncus howellii Unknown 1983-1 4294 Butte along stream that flows into Butte Creek, 1 mi E of Butte Meadows 1450 Comment
  CAS-BOT-BC312671  Juncus leiospermus John Thomas Howell 1978-4-17 52836 Butte Table Mountain 381 Comment
  CHSC47559  Juncus leiospermus Lowell Ahart 1979-5-7 1857 Butte Near a large lava rock with Indian Mills in it, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 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
  JEPS122235  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC105517  Juncus mertensianus Lowell Ahart 2010-9-28 17259 Butte On wet humus, on the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1886 Comment
  JEPS87201  Juncus nevadensis Lowell Ahart 1992-7-21 6796 Butte ca. 2 (air) mi. n.e. Philbrook Reservoir (s. side of Coon Hollow); Coon Hollow 1737 Comment
  RSA368326  Juncus nevadensis H. F. Copeland 1930-7-25 1358 Butte Jonesville. 1524 Comment
  UC1594619  Juncus nevadensis Lowell Ahart 1992-7-26 6859 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  CDA28692  Juncus occidentalis L. Ahart 2008-6-13 14816 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast from Oroville. Elevation: 1021 (GPS) feet. 0 Comment
  CHSC41298  Juncus orthophyllus S. C. Morey 1983-7-21 494 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC71201  Juncus orthophyllus Lowell Ahart 1998-6-30 8008 Butte Center of a seep, west of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  RSA0119330  Juncus orthophyllus Lowell A. Ahart 2014-7-16 19692 Butte About 30 yards east of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC57160  Juncus oxymeris L. P. Janeway 1988-6-14 2763 Butte Northwest side of canyon of Little Chico Creek, ca 2 air mi south of Ten Mile House. 259 Comment
  CHSC102623  Juncus tenuis Lowell Ahart 2009-6-18 15910 Butte On the banks of a small wash, about 60 yards west of the dredger piles along North Honcutt Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 59 Comment
  CHSC41903  Juncus tenuis Lowell Ahart 1976-9-21 1198 Butte Along a dirt road, about 1/8 mile east of the Golden Trout Crossing, east of the South Fork of the Feather River, about 3 miles west of the Sly Creek Dam. 762 Comment
  CAS-BOT-BC279903  Juncus trilocularis Lowell Ahart 2008-6-13 14814 Butte About 50 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 324 Comment
  CAS-BOT-BC312666  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Peter Ahart Ranch. Honcut Comment
  CHSC47576  Juncus uncialis Lowell Ahart 1982-5-9 3428 Butte Around the edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS118347  Juncus uncialis Lowell Ahart 2011-5-2 17347 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 32 Comment
  SBBG55175  Juncus uncialis L. Ahart 1982-5-9 3428 Butte Peter Ahart Ranch, ca. 2 mi N and 0.5 mi E of Honcut 50 Comment
  UCD142845  Juncus uncialis Lowell Ahart 1974-4-11 363 Butte Peter Ahart Ranch, about 2.25 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC97112  Juncus usitatus Lowell Ahart 2007-7-31 14401 Butte Along a drain ditch, on the north side of Highway 162, at the intersection of Highway 162 and Wickman Road, about 3 miles (air) southwest of Richvale. 26 Comment
  SBBG121546  Juncus usitatus L. Ahart 2007-7-31 14401 Butte N side of Hwy 162, at jct of Hwy 162 and Wickman Rd, ca. 3 air mi SW of Richvale 26 Comment
  SBBG128190  Juncus usitatus L. Ahart 2009-7-4 15999 Butte side of a large shallow pond, on the W side of the gravel rd, ca. 100 yards S of parking lot 3, Gray Lodge Waterfowl Management Area, ca. 6 mi (air) SW of Gridley 21 Comment
  UC1134266  Juniperus californica J. E. Sowder 1933-7-7 109 Butte Camel Mound Chico Quad., Camel Mound 609 Comment
  POM202704  Keckiella breviflora subsp. glabrisepala J. H. Morrison s.n. Butte Durham. Comment
  CHSC39016  Keckiella breviflora var. glabrisepala J. D. Jokerst 1983-6-21 1817 Butte Common along the cliff edge of Table Mountain. North edge of Coal Cr Canyon. West side of North Table Mt. 304 Comment
  CHSC44719  Keckiella breviflora var. glabrisepala R. Banchero 1980-6-14 219 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  CHSC43759  Keckiella corymbosa Vernon H. Oswald 1986-7-21 2213 Butte Little Butte Creek canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  CHSC27996  Kelloggia galioides M. S. Taylor 1978-7-18 1678 Butte On W side of Hwy 32, ca. 1/4 mi N of Forest Ranch. 718 Comment
  UC102430  Kelloggia galioides Mrs. R. M. Austin Jul 1896 695 Butte Colby Comment
  CHSC66678  Kickxia elatine Vernon H. Oswald 1996-7-17 8063 Butte Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  CHSC46287  Kochia scoparia Vernon Oswald 1989-5-15 3768 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). On the ranch road just s of the lighted parking area near the south gate. 18 Comment
  UC1594708  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte about 1 1/2 mi w Oroville Dam (on the n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  CHSC65326  Laennecia coulteri Lowell Ahart 1995-10-4 7678 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile easata of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS120051  Lagerstroemia indica Lowell Ahart 2012-10-28 18538 Butte On the west side of the horse path (gravel road), about 100 yards north of the paved park road, west side of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC341320  Lagophylla glandulosa A. A. Heller 1915-8-20 12200 Butte 8 miles north of Oroville Comment
  JEPS104007  Lamarckia aurea Lowell Ahart 2003-4-8 10051 Butte Along the dirt road, ca 1/8 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 326 Comment
  SEINET12319532  Lamium amplexicaule W. K. Cheechov 1978-1 18 Butte 200 FT ENE of Cohasset HWY, 0.7 MI N of East Lassen Ave. Chico 85 Comment
  SEINET10473880  Lasthenia californica Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4282 Butte T20N R2E sw/nw sec 1. Shippee quad. SE corner of jct of Hwys 149 & 99, ca. l0 mi s of Chico. 225 ft. Valley Grassland. 68 Comment
  UCSB63629  Lasthenia chrysostoma Richard Ernenwein 1995-10-23 135 Butte collected 2.3 mi E, along the S-side of Humboldt Road, E of Chico U S Highway 99 - Humboldt Road, , and Chico Comment
  SEINET10475347  Lasthenia chrysostoma Mary Susan Taylor 1976-3-9 Taylor 1025 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC4650  Lasthenia fremontii R. Carter 1966-4-21 356 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 10 yds. off E side Old Cherokee Rd., 5.5 mi. from Chico Rd. 274 Comment
  SFV12202  Lasthenia fremontii G. D. Ames 1962-4-8 s. n. Butte Lave outcropping on Table Mountain, north of Oroville. Comment
  SEINET10475348  Lasthenia fremontii Mary Susan Taylor 1980-3-28 Taylor 2400 Butte T22N R2E E center sec 31. Vernal pool area in Valley Grassland, just E of Chico, NE corner of jct of Notre Dam Blvd and the Skyway, ca. 1/8 mi E of Hwy 99. 69 Comment
  CHSC93346  Lasthenia gracilis Lowell Ahart 2006-5-3 12557 Butte Base of a basalt outcrop, about 1/2 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 409 Comment
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Jan 19 2011
  CAS-BOT-BC204903  Lathyrus Saichi Kawahara 1968-5-4 359 Butte Colusa-Hamilton City Road, 1 mile north of Princeton ferry, west bank of Sacramento River 30 Comment
  JEPS103477 Image available Lathyrus angulatus Lowell Ahart 2002-5-7 9621 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
  CHSC78248  Lathyrus hirsutus Lowell Ahart 2000-6-17 8483 Butte Near seeps, about 1/4 mile northeast of Kunkle Reservoir, east of Pentz Magalia Road, about 2 miles south of Paradise. 548 Comment
  RSA715575  Lathyrus jepsonii subsp. californicus L. Ahart 2005-4-14 11699 Butte East of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  CHSC23680  Lathyrus sulphureus M. S. Taylor 1976-4-27 1092 Butte Ca. 2 mi e of junc of Villas Rd and Cohasset Hwy, on n side of Ponderosa Way, ca. 23 mi ne of Chico. 609 Comment
  CHSC863  Lathyrus sulphureus A. Koopman 1929-4-16 Butte U.S. Plant Introduction Garden. 60 Comment
  CHSC3305  Lathyrus tingitanus M. L. Hillier 1966-5-1 Butte Along rd. side 7 miles n.e. of C.S.C. Admin. building on Humbug Rd. Comment
  CHSC45893  Layia fremontii Lowell Ahart 1974-4-11 365 Butte Vernal pool or swale, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC473555  Layia fremontii L. S. Rose 1931-4-12 Butte Honcut Comment
  CAS-BOT-BC321753  Layia fremontii A. A. Heller 1914-3-28 11235 Butte Hills 8 miles N of Oroville Comment
  POM361691  Layia fremontii J. Doty 1969-4-1 620 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  SEINET10839204  Layia fremontii Mary Susan Taylor 1976-3-6 Taylor 1017 Butte Valley Grassland on Table Mountain, ca. 100 m W of Cherokee Rd, ca. 2 mi NW of Oroville. 373 Comment
  CAS-BOT-BC380894  Layia platyglossa A. A. Heller 1914-4-29 11331 Butte Chico [however note comments in record; possibly near Vina in Tehama Co.] Comment
  JEPS116084  Lemna minuta Lowell Ahart 2009-10-8 16410 Butte On the south side of the road, about 50 yards east of Parking Lot 15, Gray Lodge Waterfowl Management Area, about 7 miles (air) southwest of Gridley 19 Comment
  CHSC46950  Leontodon saxatilis subsp. longirostris Lowell Ahart 1976-7-4 1154 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC46255  Lepidium dictyotum var. dictyotum Vernon Oswald 1989-4-10 3731 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), between the ranch road and Little Dry Creek near the s gate on Gridley-Colusa Hwy. 18 Comment
  CHSC104003  Lepidium didymum Lowell Ahart 2010-5-28 16740 Butte Wood chipped area on the north side of Bidwell Mansion, Chico . 60 Comment
  CHSC35647  Lepidium nitidum R. E. Preston 1982-4-7 231 Butte In dirt rd at side of Main Ditch B, ca. 1 1/4 mi e of Richvale. 32 Comment
  CAS-BOT-BC89873  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  CAS-BOT-BC89883  Lepidium nitidum Junea Kelley 1920-4-24 s.n. Butte Los Verjils. Comment
  SEINET11991676  Lepidium nitidum Unknown 1984-1 9 Butte ca 12 mi NNW of Chico, ca 4 mi N of jct of Meridian Rd & Hwy 99, along W side of Meridian Rd 61 Comment
  CHSC31647  Lepidium strictum L. Ahart 1971-4-13 70 Butte Peter Ahart Ranch, Honcut. Along edge of roads. 45 Comment
  CAS-BOT-BC12911  Lepidium strictum Lowell Ahart 1983-4-10 3929 Butte About 1.5 mile northeast of Highway 99 and Pentz Road. 100 Comment
  CHSC25356  Lepidium virginicum var. pubescens M. P. Hayes 1977-4-22 10 Butte Along Hwy 70 ca 2.2 km sw of Butte-Plumas county line, ca 23 km nw of Paradise. 485 Comment
  CHSC78225  Leptochloa fusca subsp. fascicularis Lowell Ahart 2000-5-18 8372 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville. 36 Comment
  CHSC38595  Leptosiphon bicolor Vernon Oswald 1983-4-6 288 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines (between Parking Areas R and S). 256 Comment
  CHSC29966  Leptosiphon bolanderi R. A. Schlising; D. Ikeda 1980-5-31 3607 Butte S of village of Cohasset along firetrail. 441 Comment
  CHSC44221  Leptosiphon ciliatus V. Oswald; L. Ahart 1988-7-13 3579 Butte Road to High Lakes e of Philbrook Reservoir. Outcropping on the n side of the road. 1859 Comment
  CHSC30791  Leptosiphon filipes M. S. Taylor 1980-5-27 2677 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC33250  Leptosiphon filipes R. A. Schlising; R. Banchero 1980-7-7 3852 Butte NE of village of Feather Falls, 0.5 mi N of Fall River Campground and bridge. Roadside. Comment
  RSA715925  Leptosiphon filipes L. P. Janeway, Matt Brown, Jamie Tuitele-Lewis 2005-7-12 8490 Butte Northern High Sierra Nevada. Plumas National Forest; ridge between Camp Creek and canyon of North Fork Feather River; 0.5 km southeast of confluence of Camp Creek and Lockerman Creek. Opening under high power transmission lines. 981 Comment
  CHSC113226  Leptosiphon parviflorus Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  UCSC009430  Leptosiphon parviflorus Lowell Ahart 2015-4-13 20041 Butte Road cut on the east side of Vinton Gulch Road, about 9 1/2 miles (air) north of Oroville 308 Comment
  CHSC112039  Lessingia nana Lowell Ahart 2012-8-22 18419 Butte On dry gravelly soil, old road to pond, on the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. 38 Comment
  CAS-BOT-BC341784  Lessingia nemaclada John Thomas Howell 1959-9-26 35084 Butte Arch Rock, North Fork Feather River 457 Comment
  CHSC110236  Lessingia nemaclada L. P. Janeway 2012-10-11 11072 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  JEPS108725  Lessingia nemaclada Lowell Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville 452 Comment
  CHSC46973  Lessingia virgata Vernon H. Oswald 1989-9-23 4013 Butte Butte Community College, between Parking Lot C and the Horse Arena. 106 Comment
  RSA126788  Lessingia virgata J. E. Sowder 1933-6-15 85 Butte 1 mile west of Tres Vias 46 Comment
  CHSC3416  Leucojum aestivum Judy Potter 1966-3-9 Butte Chico State College, Chico. Comment
  SEINET10572653  Lewisia triphylla Mary Susan Taylor 1980-5-27 Taylor 2673 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC42593  Ligusticum grayi Vernon Oswald 1985-7-11 1899 Butte High Lakes Rd. n of Philbrook Lake at a point 0.8 mi w of the road to Chips Creek. 1859 Comment
  RSA776054  Lilaea scilloides P. Reisentz 1979-5-11 s.n. Butte 0.7 mile W on Lunt Road from Highway 70, north of Oroville Comment
  SEINET3887042  Lilaea scilloides Barbara Ertter 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville, flat-topped basalt butte, near parking area.; 0 396 Comment
  CAS-BOT-BC509478  Lilium kelleyanum H. F. Copeland 1920-8-29 152 Butte Jonesville Woods 1219 Comment
  UC119796  Lilium pardalinum Mrs. R. M. Austin Jul 1896 10 Butte Colby Comment
  CHSC2294  Lilium pardalinum subsp. pardalinum R. M. Staley 1952-7-14 Butte Butte Creek. 457 Comment
  UC1334270  Lilium washingtonianum subsp. washingtonianum Albert M. Vollmer and Ira L. Wiggins 1940-7-6 10 Butte about 0.5 mi w Chaparral 1554 Comment
  CHSC28466  Limnanthes alba R. A. Schlising 1979-4-15 3367 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
  RSA256669  Limnanthes douglasii David Johnson 1974-4-20 15 Butte One mile east of Hwy. 99 along Skyway Rd. Comment
  SEINET12183093  Limnanthes douglasii A. K. Bos 1978-1 4 Butte Along Skyway at intersection of Skyway and Bruce Rd., 3.5 mi ESE of Chico Comment
  CHSC1009  Limnanthes douglasii subsp. rosea A. Goekler 1929-3-11 Butte Hooker Oak road. 60 Comment
  RSA33078  Limnanthes douglasii subsp. rosea A. A. Heller 1938-4-14 s.n. Butte Flat, treeless summit of Table Mountain north of Oroville. Upper Sonoran Life Zone. 305 Comment
  HSC87204  Limnanthes douglasii subsp. rosea R. J. Radzavage 1979-4-17 15 Butte Jct. Hwy. 99E and Boyles Rd., ca. 11 mi. N of Chico 61 Comment
  HSC93614  Limnanthes floccosa subsp. californica James D. Jokerst, M. S. Taylor 1980-3-20 487 Butte 50 m NW of Jct. of Bruce Rd. and Skyway, SE side Chico. Comment
  CHSC40393  Limosella acaulis Lowell Ahart 1985-4-20 4876 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/8 mile east of Honcut, about 12 miles south of Oroville. 40 Comment
  SEINET7072745  Linanthus filipes A. G. Vestal 1963-5-9 s.n. Butte About 3.5 miles north of Oroville. Coordinate datum WGS 84/NAD83. (UTM Zone 10, 623209mE, 4374845mN. Coordinate datum: NAD 27.) Comment
  CHSC43261  Lindernia dubia var. anagallidea Lowell Ahart 1987-9-4 5878 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC112925  Linum bienne B. Castro; Sabrina Bell 2012-6-14 1929 Butte Sacramento Valley. 1.0 air mi E of Hwy 99 and 0.9 mi S of Hwy 162E on peninsula at E edge of Thermalito Afterbay. 42 Comment
  CHSC2391  Linum bienne R. Carter 1965-5-19 213 Butte Found 7 mi. E of Oroville, along N side Feathervale Ave., 20' from intersection with Wyandott-LaPort Rd. 274 Comment
  CHSC30035  Linum bienne L. Ahart 1980-5-4 2203 Butte About 50 m southwest of the intersection of Forbestown Rd and Hurleton Swedes Flat Rd, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC52179  Linum lewisii var. lewisii L. P. Janeway 1989-5-13 3238 Butte Rocky Ridge; where powerlines cross Ponderosa Way (Rim Rd) ca 2 mi SE of Concow Rd. 960 Comment
  CHSC37824  Lipocarpha micrantha R. A. Schlising 1979-10-13 3501 Butte Along Sacramento River w of Chico, just n of Chico Landing Site in Bidwell River State Park. Comment
  CHSC97417  Lipocarpha micrantha Robert Fischer 2006-6-18 1021 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  JEPS120828  Lipocarpha micrantha Lowell Ahart 2013-7-9 18831 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CHSC94275  Listera convallarioides Lowell Ahart 2006-7-16 12988 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
  UC726095  Listera convallarioides A. A. Heller 1928-6-28 14661 Butte Butte Meadows Comment
  CHSC20094  Lithocarpus densiflorus M. S. Taylor 1975-2-23 391 Butte Ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  SACT002882  Lithocarpus densiflorus Herbert Copeland 1937-7-30 Butte In the foothills of Butte County. Comment
  CAS-BOT-BC36174  Lithocarpus densiflorus var. densiflorus Lowell Ahart 1983-7-24 4203 Butte About 2 miles South-west of the Forbestwon Res., about 3 miles north-east of Forbestwon 550 Comment
  CHSC92947  Lithocarpus densiflorus var. densiflorus L. P. Janeway 2005-7-17 8499 Butte Northern High Sierra Nevada. West side near top of ridge on east side of Lockerman Creek, 0.5 km northeast of confluence of Lockerman Creek at Camp Creek. 1076 Comment
  CHSC42953  Lithocarpus densiflorus var. echinoides Lowell Ahart 1987-7-8 5811 Butte Along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CAS-BOT-BC430884  Lithophragma bolanderi Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CHSC65466  Lithophragma bolanderi Vernon Oswald 1984-4-9 1129 Butte Feather Falls Trail, 1.7 mi. from the trail head at the end of Bryant Ravine Rd. 487 Comment
  SFV10394  Lithophragma bolanderi M. L. Vincent 1965-4-16 627 Butte Pentz Road, 0.5 miles east of Pentz Road. Comment
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  JEPS5851  Lithophragma heterophyllum Robert Kehlor 1951-4-14 32 Butte 6 1/4 mi e Oroville (J. M. Kehlor ranch); e of Oroville Comment
  CHSC2456  Lithophragma parviflorum var. parviflorum R. Carter 1965-3-13 161 Butte Found on North Table Mt. ca. 45 yds. SE of point where old Cherokee Rd. comes over rim of table at base of lava cliffs. 304 Comment
  CAS-BOT-BC428443  Lithophragma trifoliatum Forest Sheehan 1970-4-7 s.n. Butte Table Mt. near Oroville Comment
  CAS-BOT-BC428450  Lithophragma trifoliatum Mary E. Wall 1935-4-14 s.n. Butte Between Cherokee & Oregon City Comment
  UC480673  Lithospermum californicum H. F. Copeland 1931-6-11 1531 Butte Jonesville Jonesville (<rocky point above hotel>) 1676 Comment
  CAS-BOT-BC342142  Logfia filaginoides A. A. Heller 1914-6-2 11148 Butte 8 miles north of Oroville Comment
  CHSC86855  Logfia filaginoides L. P. Janeway; John Hunt, Adam Henderson 2003-5-13 7784 Butte Northern High Sierra Nevada. East side of Middle Fork Feather River arm of Lake Oroville, 1.0 km southwest of mouth of Frey Creek. 299 Comment
  CAS-BOT-BC342387  Logfia gallica A. A. Heller 1915-5-17 11880 Butte Along Chico Creek 5 miles east of Chico Comment
  CAS-BOT-BC269079  Lolium perenne Lowell Ahart 1980-5-10 2231 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA2244  Lolium perenne L. Ahart 2002-6-2 9675 Butte East of the large exposed drain pipe, road cut on the south side of Lumpkin Road, about 1 mile northeast of the intersection of Lumpkin Road and Forbestown Road, about 12 miles (air) east of Oroville. Comment
  UCD66624  Lolium temulentum R. N. Raynor; H. A. Hannesson 1941-5-9 Butte 4 mi. N of Gridley. Comment
  HSC92492  Lomatium caruifolium var. denticulatum Jeanne MacFarland, Kathie Meyer & Anne Mullenniex 1995-4-9 57 Butte S of Paradise at intersection of Cherokee Rd and Pentz Rd. 381 Comment
  CDA13871  Lomatium macrocarpum G. F. Hrusa, T. D. Wilfred 1997-5-7 13729 Butte Sierra Nevada; above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. 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
  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
  SEINET10840943  Lomatium tomentosum Mary Susan Taylor 1980-3-30 Taylor 2412 Butte Upper Bidwell Park, Chico. 244 Comment
  CHSC101660  Lomatium utriculatum Lowell Ahart 2009-4-26 15646 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, on the east side of Guardians Trail, about 200 yards southwest of Pine Trail. 381 Comment
  JEPS115820  Lomatium utriculatum Lowell Ahart 2009-4-26 15646 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, on the east side of Guardians Trail, about 200 yards southwest of Pine Trail 381 Comment
  UC426973  Lonicera conjugialis E. B. Copeland 1930-6-27 478 Butte Jonesville 1550 Comment
  CHSC44384  Lonicera hispidula Lowell Ahart 1988-6-23 6067 Butte Just east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road. 670 Comment
  CHSC83000  Lonicera hispidula Lowell Ahart 2002-9-8 9932 Butte On the west side of the paved road, about 1/4 mile south of the first parking spaces at the Feather Falls Trailhead, about 1 3/4 miles north by road from the town of Feather Falls. 854 Comment
  POM67639  Lonicera hispidula var. vacillans C. C. Bruce 1897-06 1809 Butte [No location data on label] Comment
  CAS-BOT-BC240685  Lonicera interrupta A. A. Heller 1914-5-18 11408 Butte Collected near Hog Spring on the Chico-Butte Meadow road. Between Chico and Forest Ranch, 8 miles from Chico Comment
  POM27895  Lotus humistratus C. C. Bruce 1897-05 2037 Butte [No location data on label] Comment
  SEINET3523638 Image available Lotus incanus A. A. Heller 1939-4-26 15387 Butte Along road leading down to the Feather River from Stirling Comment
  SEINET10906967  Lotus micranthus Lowell Ahart 1983-5-13 Ahart 3991 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  SEINET10906968  Lotus micranthus Mary Susan Taylor 1978-5-6 Taylor 1589 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  SEINET12161334  Lotus micranthus Unknown 1978-1 19 Butte ca 15.4 mi NE of Chico and 5ft S of Cohasset Hwy. Richardson Springs Quad. NW corner of Sec. 18 280 Comment
  SEINET10452009  Lotus purshianus Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4204 Butte T19N R7E sec 6. Ca. 2 mi sw of the Forbestown Reservoir, ca. 3 mi ne of Forbestown. Yellow Pine Forest; 550 m. 550 Comment
  JEPS98308  Lotus purshianus var. purshianus Lowell Ahart 2000-6-27 8525 Butte 12 air miles NE of Oroville (N part of Big Bald Rock, 100 yds S and W of the N and E forest line, 3 air miles E of Madrone Lake) 963 Comment
  UCR219109  Lotus purshianus var. purshianus George K. Helmkamp, E. A. Helmkamp 2009-9-5 15576 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  SEINET10452017  Lotus stipularis Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4646 Butte About 1 mi NE of the West Branch Bridge, ca. 2 mi S of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SD243397  Ludwigia decurrens M. Stewart, C. Mutters 2011-9-13 PDR 1373328 Butte South-southwest of Richvale. Rice field. Comment
  UC1562387  Ludwigia palustris Lowell Ahart 1990-7-15 6565 Butte e. of Enterprise Boat Launch Area Lake Oroville (ca. 1/4 mi. n.w. of Enterprise Bridge across Lake Oroville) 243 Comment
  SEINET10453036  Ludwigia peploides Mary Susan Taylor 1978-5-7 Taylor 1608 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 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
  RSA712825  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards SE of the Concow Grange building, on the W side of Big Bend Road, about 1.25 miles (air) S of Jarbo Gap. 549 Comment
  UC726679  Lupinus A. A. Heller 1942-5-17 16477 Butte Pentz Cherokee Road 2 mi above Pentz; Pentz Cherokee Road Comment
  SEINET10452616  Lupinus albifrons Mary Susan Taylor 1981-5-5 Taylor 3605 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  POM23778  Lupinus albifrons var. eminens C. C. Bruce 1897-04 2028 Butte Yankee Hill. Comment
  CHSC65456  Lupinus andersonii var. apertus Vernon Oswald 1985-6-3 1808 Butte Skyway 2.7 mi n of Stirling City. 1194 Comment
  SEINET10484606  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22n,r63,sec.5 sw 1/4. Pulga se quad. In sandy granite, on ridge above foreman Creek, ca 0.5 mile w of 23n15.5, ca 1.5 mile s of its junction with four trees Road, ca 0.5 mile w of oroville-quincy hwy, ca 2 air miles w of elks retreat. Assoc.; Madia minima 1311 Comment
  UC865452  Lupinus arbustus A. A. Heller 1915-6-25 12016 Butte Chico Meadows; Sierra Nevada, Chico Meadows 1219 Comment
  POM26882  Lupinus arbustus subsp. silvicola C. C. Bruce 1898-05 2458 Butte Forest Ranch Comment
  CDA15390  Lupinus bicolor G. F. Hrusa 1997-4-3 13691 Butte Sierra Nevada; Near Paradise Lake dam along Old Railroad Grade Rd., approx. 3 m. N of Magalia. Comment
  JEPS119696  Lupinus bicolor Lowell Ahart 2012-5-2 17952 Butte West of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. Comment
  HSC32640  Lupinus bicolor Dave Knorr 1974-4-20 130 Butte Oroville's Table Mtn. near Cherokee Rd. Comment
  RSA754861  Lupinus bicolor subsp. tridentatus L. Ahart 2009-4-26 15619 Butte About 120 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC46265  Lupinus bicolor var. pipersmithii Vernon Oswald 1989-4-19 3740 Butte Wurlitzer Unit, Vina Plains Preserve. On the north bank of Pine Creek upstream from the mouth of Singer Creek. 57 Comment
  CHSC96218  Lupinus latifolius var. columbianus R. Fischer 2006-5-5 980 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing on wooded hillside, black oak overstory, ca. 0.25 miles east of Big Chico Creek on the north side of 10 Mile House Road. 304 Comment
  CHSC84647  Lupinus microcarpus var. microcarpus Matt Quinn 2001-4-26 53 Butte Approximately 1500 feet east of Clark Road and 1/2 mile south of Fallager Creek. 85 Comment
  SFV11545  Lupinus microcarpus var. microcarpus M. L. Vincent 1963-6-6 371 Butte Nelson Bar Road at PGE. 300 Comment
  UC1076230  Lupinus nanus Herbert L. Mason 1927-5-10 3712 Butte ne of Oroville Table Mountain (Cherokee Mine); , Cherokee Mine Comment
  POM253156  Lupinus nanus subsp. latifolius A. A. Heller 1938-4-14 15034 Butte Summit of Table Mountain. 610 Comment
  CHSC113126  Lupinus nanus var. vallicola Lowell Ahart 2013-11-18 19283 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
  CHSC86539  Lupinus nanus var. vallicola L. P. Janeway; John Hunt, Adam Henderson 2003-5-29 7800 Butte Northern High Sierra Nevada. Steep northwest-facing slope just above the Middle Fork Feather River arm of Lake Oroville; 5.1 km west-southwest of mouth of Frey Creek. 287 Comment
  CHSC83987  Lupinus pachylobus Lowell Ahart 2003-4-8 10043 Butte About 40 yards and in the small canyon west of the tall Digger Pine on the south side of Beatson Hollow, about 3/4 mile northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 314 Comment
  RSA695519  Lupinus pachylobus L. Ahart 2003-4-8 10050 Butte About 1/8 mi NW of the iron gate and fence, NW of Cherokee Rd, North Table mountain, about 7 mi (air) N of Oroville. 327 Comment
  CHSC24769  Lupinus polycarpus P. J. Welch 1976-4-11 3 Butte Ca. 10 yds w of Mud Creek and ca. 65 yds s of Nord Hwy. overcrossing. 3.0 mi nw of Chico. 60 Comment
  CHSC31811  Lupinus polycarpus L. Ahart 1978-5-1 1686 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC25291  Lupinus polyphyllus var. burkei M. S. Taylor 1977-7-15 1418 Butte On Humbug Rd between Covered Bridge and Paradise, ca. 3 mi s of Paradise. Comment
  CHSC63813  Lupinus polyphyllus var. burkei S. C. Morey 1983-7-23 590 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  POM24039  Lupinus vallicola subsp. vallicola C. C. Bruce 1897-04 2035 Butte [name of locality illegible] Comment
  JEPS87449  Luzula comosa Vernon H. Oswald and Lowell Ahart 1993-4-21 5289 Butte ca. 2.25 (air) mi. n.w. Magalia (Middle Butte Creek Trail on w. side of creek & on upstream side of Ponderosa Way); Middle Butte Creek Trail 707 Comment
  UCD142107  Luzula comosa Robert E. Preston 1982-7-16 339 Butte Crane Valley. 1584 Comment
  JEPS121922  Luzula comosa var. comosa Lowell Ahart 2014-7-10 19634 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC31908  Luzula macrantha L. Ahart 1975-3-18 709 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC87441  Luzula macrantha R. D. Fischer 2004-4-3 105 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail, 0.25 miles south of Pine Trail junction. 396 Comment
  CHSC87787  Luzula macrantha Paul Maslin 2004-3-17 4 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610533E 4411091N. 377 Comment
  UC1586526  Luzula parviflora Lowell Ahart 1991-8-25 6707 Butte about 1 mi nw Rogers Cow Camp (along Haphazard Creek, about 6 mi ne of Brush Creek, w of Oroville-Quincy Hwy); along Haphazard Creek, ne of Brush Creek, nw of Rogers Cow C 1219 Comment
  SEINET10472425  Luzula parviflora Lowell Ahart 1991-8-25 Ahart 6705 Butte Forest Road 23N60 (Jordan Creek-Marble Creek Road) just south of Jordan Creek, east of Oroville-Quincy Hwy, ca 5.75 miles (air) northeast of Brush Creek. Yellow Pine Forest. T22N R6E NW/SW/S14. 1082 Comment
  HSC86843  Lycopus americanus L. P. Janeway, Heidi Weinert, Scott George 1988-7-27 3093 Butte W of Murphy Slough and across from Golden State Island 38 Comment
  SEINET13711409  Lythrum hyssopifolia Lowell William Ahart, Lowell William Ahart 1999-1 8169 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  UC872893  Lythrum hyssopifolia Lewis S. Rose 1939-6-11 39275 Butte 3 mi e of Honcut 45 Comment
  SEINET6225032  Lythrum hyssopifolia L. S. Rose 1967-1 67102 Butte Oroville. Comment
  CAS-BOT-BC342726  Madia elegans H. M. Hall 1914-7-18 9758 Butte Chico Creek, 5 mi. E. of Chico Comment
  SEINET10872111  Madia elegans Mary Susan Taylor 1976-5-5 Taylor 1108 Butte Abundant on N or S side of Hwy 70, ca. 2 mi N of Jarbo Gap, ca. 17 mi NE of Oroville, near Pulga; with Acer macrophyllum, Tel lima grandiflora, Cornus nuttallii. Comment
  CHSC102734  Madia elegans subsp. densifolia Lowell Ahart 2009-7-9 16015 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road,Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 203 Comment
  POM30364  Madia elegans subsp. vernalis C. C. Bruce 1897-05 1989 Butte Humboldt Road Comment
  RSA0117082  Madia exigua Lowell A. Ahart 2015-6-6 20201 Butte Between the road and the dry stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC97423  Madia gracilis Robert Fischer 2006-5-29 1016 Butte Chico. Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. 274 Comment
  HSC100783  Madia gracilis Lowell Ahart 2009-5-23 15722 Butte N side of Ten Mile House Rd., Upper Bidwell Park, 1/2 (air) mi. SW of intersection of Hwy. 32 and Ten Mile House Rd., 10 mi. NE of Chico. 311 Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  SEINET10474826  Madia minima Mary Susan Taylor 1980-5-27 Taylor 2669 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  JEPS98930  Madia subspicata Bruce G. Baldwin, Gerald D. Carr, Lowell Ahart 1988-6-9 713 Butte 1 mi N, 3 mi E of Honcut (Peter Ahart Ranch, above North Honcut Creek) Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  SEINET10833624  Mahonia dictyota Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3553 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-BC510729  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville at 'the Summit 640 Comment
  CHSC45221  Malacothrix floccifera Lowell Ahart 1979-6-9 1927 Butte About 1/4 mile east of Magalia. 640 Comment
  CAS-BOT-BC347377  Malacothrix floccifera C. R. Quick 1947-8-3 47 -73 Butte Kimshaw Burn, burned ridgetop just Se of river, near Stirling City, in or near Lassen N. F. Comment
  SD8992  Malacothrix floccifera Mrs. R. M. Austin 1883-1 Butte Comment
  SEINET10475284  Malacothrix floccifera Mary Susan Taylor 1980-7-6 Taylor 3067 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  CHSC101814  Malva nicaeensis Lowell Ahart 2009-6-12 15840 Butte At the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC108981  Marah fabacea Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17916 Butte On the north side of the path, near table 17, on the north side of Centennial Avenue. Lower Bidwell Park, Chico. 80 Comment
  CHSC115438  Marah fabacea Ariana Gehrig 2013-3-10 Butte City of Chico. Big Chico Creek at Rio C hico Way. Along pathway. 64 Comment
  CHSC3643  Marah fabacea var. agrestis Alice L. Stoll 1966-2-26 25 Butte About 80' N. E. Of Manzanita Ave. on Centennial Ave., Chico. Comment
  CHSC574  Marah fabacea var. agrestis M. Roberson 1956-4-2 Butte SW of Paradise, along Skyway 426 Comment
  CHSC36288  Marrubium vulgare M. S. Taylor 1982-5-22 4506 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC42275  Marrubium vulgare L. P. Janeway; C. A. Janeway 1987-4-20 2009 Butte North side of hwy 32 at Ten Mile House Trail, ca 9 mi ne of the hwy 99 jct. 471 Comment
  UC1586569  Marsilea oligospora Vernon H. Oswald and Lowell Ahart 1991-8-19 4837 Butte between Philbrook Reservoir and Coon Hollow (nw lake in cluster of 3 mapped lakes on n side of Forest Rd. 25N15) 1767 Comment
  CHSC28934  Marsilea vestita M. S. Taylor 1978-9-8 1879 Butte Ca. 4 mi n of Chico, on Hwy 99. 60 Comment
  CHSC3309  Matthiola incana M. Gregg 1966-4-13 68 Butte Corner of 20th and Salem Streets in Chico. In flower bed. Comment
  CHSC3502  Meconella californica M. Gregg 1966-3-7 33 Butte On Humbug Rd. at covered Bridge. On hill directly behind the old covered bridge. Approx. 9 miles from the CSC campus. Comment
  CAS-BOT-BC422644  Meconella californica Mrs. C. C. Bruce 1897-2-1 2018 Butte Unspecified Comment
  POM97345  Meconella californica C. C. Bruce 1897-03 2018 Butte Foothills near Chico Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  CHSC20470  Medicago lupulina M. S. Taylor 1975-6-25 797 Butte Ca. 100 yds w of Mud Creek, ca. 1 mi n of Richrdson Springs Hotel, ca. 6 mi ne of Chico. 121 Comment
  SEINET10874084  Medicago lupulina Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4693 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC63251  Medicago orbicularis Lowell Ahart 1994-3-30 7279 Butte Garden area at the north-east corner of Oregon City School House, Oregon City, about 7 miles north of Oroville. 365 Comment
  JEPS95544  Medicago orbicularis Lowell Ahart 1994-3-30 7279 Butte 7 mi N of Oroville (garden area at NE corner of Oregon City School House, Oregon City) 365 Comment
  CDA4217  Medicago polymorpha T. C. Fuller 1962-5-17 8702 Butte Highway 99E at Cana Highway, ca. 10 miles north of Chico. 0 Comment
  CAS-BOT-BC271131  Melica aristata Vernon Oswald 1989-6-15 3807 Butte Logging road 2.2 mi S of Lomo, 2.3 mi S of ford over Cedar Creek 1219 Comment
  CHSC96877  Melica aristata Lowell Ahart 2007-6-12 14066 Butte North of the parking area at Big Bald Rock, about 14 miles (air) northeast of Oroville. 893 Comment
  SEINET10662391  Melica californica Lowell Ahart 2007-5-29 Ahart 13924 Butte T21N, R6E, Section 28. About 1/8 mile south of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about a mile by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 599 Comment
  UCD87159  Melica californica W. R. Powell 1968-5-17 1511 Butte Along new Oro-Feather Falls Road, 4 miles north-northwest of Rackerby. 548 Comment
  CAS-BOT-BC282049  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CHSC61543  Melica geyeri Lowell Ahart 1993-6-26 7031 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  RSA500431  Melica geyeri Vernon H. Oswald 1989-5-28 3787 Butte Logging road paralleling the west side of Butte Creek, 3.1 miles south of Humboldt Road (near Butte Meadows). 1293 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
  CHSC41907  Melica harfordii Lowell Ahart 1983-7-24 4216 Butte On the road cutbank at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  CHSC42520  Melica harfordii Lowell Ahart 1987-5-22 5676 Butte North of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC49559  Melica harfordii Vernon Oswald 1988-6-2 3348 Butte Spur Rd. 210G on w side of Hwy 32 ca. 0.3 mi n of Platte Mt. Lookout. 975 Comment
  RSA700220  Melica harfordii L. Ahart 2004-6-22 11112 Butte on the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch;, about 5 miles (air) west of Stirling City. 692 Comment
  CHSC100928  Melica stricta R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4327 Butte Northeast of Phillbrook Reservoir, along crest of Snow Mountain 2103 Comment
  CHSC31836  Melilotus albus L. Ahart 1978-7-15 1788 Butte Along edges of North Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  RSA724876  Melilotus albus L. Ahart 2006-9-13 13336 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 432 Comment
  CHSC3402  Melilotus indicus Alice L. Stoll 1966-5-7 158 Butte Bare Hole, Upper Bidwell Park, 7.4 miles from First and Main Streets. Comment
  HSC100741  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd., Upper Bidwell Park, ~3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  CAS-BOT-BC7430  Mentha arvensis f. brevipilosa Amos Arthur Heller 1914-7-11 11561 Butte Chico-Hamilton road, 6 miles NW of Chico Comment
  CHSC20720  Mentha canadensis M. S. Taylor 1975-8-31 885 Butte On Ernies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  JEPS108833  Mentha pulegium Lowell Ahart 2006-7-4 12913 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville 29 Comment
  JEPS124276  Mentha pulegium Lowell Ahart 2015-11-18 20661 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  JEPS95864  Mentha pulegium Lowell Ahart 1999-8-13 8164 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
  CDA5710  Mentha pulegium L. Ahart 2001-6-1 8746 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. Comment
  JEPS118060  Mentha spicata var. spicata Lowell Ahart 2011-8-17 17624 Butte About 20 yards south of the trail, south of the crossing and on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CHSC58954  Micranthes bryophora Lowell Ahart 1992-7-26 6857 Butte about 1/4 mile north-east of the Carr Mine, about 2 (air) miles south-east of Snow Mountain. 1798 Comment
  CHSC108869  Micranthes californica Lowell Ahart 2012-3-23 17785 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC21148  Micranthes californica M. S. Taylor 1975-3-10 416 Butte On s side of Butte Creek, ca. 1/4 mi w of Covered Bridge, ca. 8 mi e of Chico. Comment
  CAS-BOT-BC429199  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 Comment
  SEINET223506  Microcala quadrangularis Unknown 1980-5-7 3294 Butte Peter Ahart Ranch ca 2-1/2 mi NNE of Honcut between Oroville and Maryville, 30 Comment
  CHSC46960  Micropus californicus var. californicus Lowell Ahart 1974-4-7 359 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET11806700  Micropus californicus var. californicus P. J. Minton 1980-1 1 Butte E of Chico, ca 8.1 mi from junction of Rt. 99 on Rt. 32 488 Comment
  UC34479  Micropus californicus var. californicus F. Z. Hoffman 1898-3-19 Butte Chico Comment
  CAS-BOT-BC348697  Microseris acuminata Lowell Ahart 1980-5-4 2172 Butte Thermalito 65 Comment
  POM35004  Microseris acuminata C. C. Bruce 1898-03 1993 Butte Plains [no specific locality given] Comment
  CHSC65893  Microseris douglasii subsp. douglasii Vernon H. Oswald 1996-4-19 7388 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Pasture near the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CAS-BOT-BC348881  Microseris douglasii subsp. douglasii E. B. Copeland 1899-4-22 s.n. Butte Chico Comment
  CHSC42967  Mimetanthe pilosa Lowell Ahart 1987-7-3 5770 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC1012167  Mimulus aurantiacus var. grandiflorus F. W. Pennell and A. A. Heller 1940-6-5 25677 Butte 10-12 mi above Oroville (Route 24); Feather River 182 Comment
  LA28066  Mimulus bicolor A. A. Heller; Howard S. Brown 1902-5-12 5545 Butte Grade between Clear Creek and Paradise Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  CHSC98977  Mimulus guttatus Lowell Ahart 2008-5-12 14737 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS115190  Mimulus guttatus Lowell Ahart 2009-6-19 15926 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
  CDA41791  Mimulus guttatus T. C. Fuller 1958-4-15 4796 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  POM183038  Mimulus kelloggii A. A. Heller, H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek). Comment
  UC103727  Mimulus latidens Mrs. R. M. Austin 1890-1 164 Butte Little Chico Creek Comment
  JEPS7098  Mimulus moniliformis Rimo Bacigalupi with L. R. Heckard 1951-8-7 3474 Butte 1/4 mi e Butte Meadows road (at crossing of Chaparral-Butte Meadows road, at very edge of boundary with Tehama Co.); Butte Creek 1325 Comment
  CHSC28680  Mimulus moschatus M. S. Taylor 1978-7-21 1827 Butte On s side of Oroville-Quincy Hwy along creek in meadow in Yellow Pine Forest, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC93973  Mimulus pulsiferae R. D. Fischer 2004-6-20 752 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off a dirt road running on the east side and parallel to Chico Meadows. 1371 Comment
  UC886330  Mimulus pulsiferae A. A. Heller 1915-4-12 11805 Butte near Cohasset; Sierra foothills Comment
  CHSC4191  Minuartia californica Kathy Sommarstrom 1967-3-25 6 Butte Found 7.9 miles from freeway overpass to Paradise on Skyway, 20 yards to left of Hwy. 274 Comment
  CHSC65195  Minuartia cismontana Lowell Ahart 1995-5-30 7588 Butte Along the edge of the dirt road, about 1/10 mile south-east of the reservoir, north of Beatson Hollow, about 2 miles north-west of Cherokee Road, North Table Mountain, about 7 miles north of Oroville. 304 Comment
  SEINET10866376  Minuartia douglasii Mary Susan Taylor 1980-5-27 Taylor 2696 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  RSA621750  Monardella douglasii subsp. venosa B. Castro 1996-5-18 659 Butte 5.5 airmiles SE of the town of Paradise, in bottom of unnamed canyon just S of Neal Road, 60 ft N of creek channel directly under transmission lines. 85 Comment
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  RSA401578B  Monardella lanceolata var. lanceolata L. Ahart 1984-5-28 4652 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. 450 Comment
  RSA718088  Monardella odoratissima subsp. glauca L. Ahart 2006-7-16 12960 Butte north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1436 Comment
  UC104639  Monardella odoratissima subsp. pallida Mrs. R. M. Austin 1896-7-1 289 Butte Colby Comment
  CAS-BOT-BC220449  Monardella sheltonii L. P. Janeway 1988-6-19 2821 Butte Ca 200 ft above Honey Run Rd, 2.6 mi from Humbug Rd 274 Comment
  CHSC67984  Monardella sheltonii James D. Jokerst 1992-5-19 3357 Butte Cascade Range Foothills. Stone Ridge Ranch Devolopment Site E of Cohasset Rd. at Chico Municipal. North-facing cliff S of intermittent drainage in Sheep Hollow. 76 Comment
  JEPS115380  Monardella sheltonii Lowell Ahart 2009-6-3 15822 Butte On the west side of Ten Mile House Road, about 200 yards northwest of the table at the old homestead, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 232 Comment
  CAS-BOT-BC220310  Monardella venosa C. C. Parry 1883-1-1 s.n. Butte Chico Comment
  CAS-BOT-BC444883  Montia fontana John Thomas Howell 1976-4-1 51532 Butte Table Mountain, 4 to 5 miles north of Oroville 304 Comment
  CHSC115362  Montia fontana Lowell Ahart 2015-2-26 19939 Butte On the west side of the old paved road (Bidwell Bar- Miners Ranch Road), strand of Lake Oroville, about 1/4 mile north of Miners Ranch Reservoir, about 4 miles east of Oroville. 218 Comment
  CHSC54371  Montia fontana subsp. chondrosperma M. Bailey 1991-3-8 547 Butte Butte College campus, near edge of vernal pool, e of Williams Road and w of Wallis Ponds. 85 Comment
  CHSC56082  Montia fontana subsp. chondrosperma L. P. Janeway; R. A. Schlising 1988-7-16 3013 Butte Along Willow Creek, 1 mi west of Humbug Summit Road. In moss at seep next to creek. 1798 Comment
  JEPS116117  Montia parvifolia Lowell Ahart 2009-5-15 15718 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
  UC83795  Montia parvifolia Mrs. R. M. Austin 1883-5-1 45 Butte Little Chico Canyon Comment
  CHSC46691  Muhlenbergia andina V. Oswald; L. Ahart 1989-8-15 3937 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 the edge of a lake n of and visible from the road. 1752 Comment
  CAS-BOT-BC275344  Muhlenbergia mexicana John Thomas Howell 1961-9-22 36716 Butte Bank of Feather River, Oroville 53 Comment
  CHSC113475  Muhlenbergia minutissima Lowell Ahart 2014-7-10 19639 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  SEINET10901847  Muhlenbergia rigens Mary Susan Taylor 1975-10-4 Taylor 963 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  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
  SEINET12093734  Myosurus minimus Unknown 1985-1 4880 Butte S of Central House Rd., NW of Honcut, about 12 mi S of Oroville, along sides of Wyandotte Creek 35 Comment
  CHSC43251  Myriophyllum aquaticum Lowell Ahart 1987-10-22 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 609 Comment
  CHSC48459  Myriophyllum spicatum V. Oswald 1988-6-8 3362 Butte Fernandez Grant. East border of the large pond in the Oroville Wildlife Area on the west side of the Feather River between the levels of Walnut and Biggs Ave. 32 Comment
  CHSC45316  Najas gracillima Vernon Oswald 1988-10-25 3714 Butte Wurlitzer Unit, Vina Plains Preserve. 57 Comment
  UCD19361  Najas guadalupensis subsp. guadalupensis E. Dean; with J. Ditomaso and E. Healy 2001-8-20 852 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy. Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. 30 Comment
  CHSC39099  Nama lobbii R. A. Schlising 1980-7-28 3929 Butte E of Jonesville in n part of county, on road to Scotts John Creek. Comment
  JEPS105913  Narthecium californicum Lowell Ahart 2004-8-2 11321 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City 1689 Comment
  SEINET12050272  Narthecium californicum L. Ahart, Ahart, P. 1984-1 4760 Butte about .5mi E of Bald Mt., about 5mi NE of Stirling City 1750 Comment
  CHSC6749  Nassella pulchra V. Hagaman 1968-4-19 476 Butte Cherokee Village, ca 200 yards E. of cemetary. Comment
  SEINET10907333  Nasturtium officinale Mary Susan Taylor 1974-4-28 Taylor 211 A Butte Between Paradise and Honey Run Covered Bridge, along Honey Run Road. Comment
  CHSC34704  Navarretia divaricata M. S. Taylor 1978-7-19 1764 Butte On e side of Upper Scots John Rd, ca. 3 mi n of its jct with Scots John Rd. ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC48655  Navarretia divaricata Vernon Oswald 1983-7-6 834 Butte Beside Calif. Hwy. 32, 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. At the edge of the road. 1188 Comment
  SEINET10496821  Navarretia divaricata Mary Susan Taylor 1978-7-19 Taylor 1764 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC46295  Navarretia divaricata subsp. vividior Vernon Oswald 1989-5-16 3773 Butte Ponderosa Way on Musty Buck Ridge between Cohasset and Big Chico Creek. 762 Comment
  CHSC45719  Navarretia filicaulis K. R. Stern 1979-6-29 Butte Parkhill, 1.5 mi S of Jarbo Gap; Jas. Moak property. 585 Comment
  CHSC87892  Navarretia filicaulis Lowell Ahart 2004-6-22 11120 Butte On the west side of Doe Mill Road, where a road goes east to the water ditch, about 1/2 mile southeast of the bridge across Butte Creek, about 2 1/2 miles (air) southeast of Forest Ranch, about 5 miles (air) southwest of Stirling City. 713 Comment
  CHSC36714  Navarretia heterandra D. H. Ikeda 1980-5-11 360 Butte 0.7 mi s of intersection of Hwy. 99 and Pentz Rd. on e side of highway. Vernal pools. Comment
  CHSC38600  Navarretia heterandra Vernon Oswald 1983-5-22 531 Butte Upper Bidwell Park, Chico, along the n side of Horseshoe Lake. 100 Comment
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  JEPS104308  Navarretia heterandra Lowell Ahart 2003-5-27 10216 Butte Rifle and Trap Range, ne of Horseshoe Lake, n of Parking Area E, Upper Bidwell Park, ca 1 1/2 mi e of Manzanita Avenue, Chico. 103 Comment
  UC1228165  Navarretia heterandra Beecher Crampton 1960-6-15 5623 Butte 10 mi se Chico Comment
  SEINET10837199  Navarretia intertexta Mary Susan Taylor 1975-6-25 Taylor 799 Butte Richardson Springs on Mud Creek, ca. 3 mi NE of Cohasset Hwy, ca. 6 mi N of Chico, ca. 1 mi NE of the Hotel at the Springs. With Gary Jones. 244 Comment
  CAS-BOT-BC230333  Navarretia leucocephala Robert F. Holland 1976-4-13 274 Butte W side of State Highway 99, 1 mile N of junction with State Highway 162, E of Richvale Comment
  CHSC84253  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2003-5-28 10232 Butte Bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  CAS-BOT-BC230386  Navarretia leucocephala subsp. minima Lewis S. Rose 1939-6-5 39196 Butte Honcut 30 Comment
  CHSC67262  Navarretia nigelliformis subsp. nigelliformis James D. Jokerst; Barbara Castro 1992-5-19 3352 Butte Cascade Range Foothills. Unnamed canyon N of Nugen Canyon on the S side of Neal Rd. near the Butte County Sanitary Landfill. 76 Comment
  CDA40108  Navarretia tagetina L. Ahart 2005-5-28 11817 Butte South side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. Comment
  CHSC91118  Navarretia tagetina Lowell Ahart 2005-5-28 11816 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  CHSC97363  Navarretia tagetina Paul Maslin 2005-5-1 56 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10619770E 4410043N. 243 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  SEINET10935977  Navarretia viscidula subsp. purpurea Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4133 Butte T20N R5E sw sec 10. Along Ponderosa Way (Big Ridge Rd), ca. 0.5 mi w of the East Fork Canyon Creek, ca. 14 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  NY337163  Nemophila alata H. E. Brown 1897-3-3 173 Butte Clear Creek Comment
  CHSC24148  Nemophila heterophylla B. Bunge 1976-4-12 11 Butte Ca. 25 yd. n of Butte Creek and 25 yd. w of Covered Bridge; ca. 8 mi. e of Chico. 106 Comment
  CHSC96228  Nemophila heterophylla R. Fischer 2006-3-17 988 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 231 Comment
  JEPS107352  Nemophila heterophylla Lowell Ahart, Paul Maslin, John Dittes 2005-3-17 11679 Butte Big Chico Creek Ecological Reserve. On the west side of Chico Canyon Road, about 1 mile (air) west of Highway 32, about 7 miles (air) northeast of Chico 236 Comment
  UC126923  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte near Oroville (in the foothills of the Sierra Nevada); foothills Sierra Nevada, nar Oroville 150 Comment
  POM199585  Nemophila spatulata H. F. Copeland 1932-6-29 s.n. Butte Jonesville. Above meadow by Butte Creek. Comment
  UCD110208  Notholithocarpus densiflorus Tracy I. Storer 1961-6-6 s.n. Butte State Highway 32, 27 miles east of Chico. Comment
  UCD137710  Nuphar polysepala Herbert L. Mason; Verne Grant 1946-8-14 13029 Butte Sacramento Outing Club. Butte Sink. Comment
  CDA3526  Nymphaea odorata G. D. Barbe 1975-6-4 2029 Butte North side of Nelson West Road 1/4 mile east of Chico-Butte City Highway. 0 Comment
  JEPS22684  Odontostomum hartwegii Rimo Bacigalupi with Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte 1 mi. n. Chico airport (along Cohasset Rd., drainage of Mud Creek) 91 Comment
  SDSU5332  Odontostomum hartwegii Scott McMillan 1992-4-11 11 IV92C Butte Found along the edge of a still moist vernal pool. The pool was under a electrical tower north of Upper Park Rd., in Upper Bidwell Park, Chico, California. 78 Comment
  SEINET10472783  Odontostomum hartwegii Mary Susan Taylor 1980-4-27 Taylor 2568 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
  CAS-BOT-BC171468  Oenothera cruciata Lowell Ahart 1988-5-30 6018 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CDA4254  Onobrychis viciifolia M. S. Taylor 1982-6-24 4730 Butte Around large landing on saddle of ridge southeast of Flea Mountain, north of Pulga, ca. 5 air miles east of Magalia. Comment
  CAS-BOT-BC71181  Ophioglossum californicum Lowell Ahart 1983-1-29 3901 Butte On the Joie Osgood Ranch, about 4 miles northeast of Honcut 85 Comment
  CHSC116672  Ophioglossum californicum Lowell Ahart 2016-2-22 20741 Butte About 150 yards south of the north fence line, about 1/2 mile east of dthee 'S' turn in Dunstone Drive, about 4 1/4 miles northeast of Honcut. 66 Comment
  JEPS124297  Orobanche fasciculata Lowell Ahart 2015-4-13 20034 Butte About 2 1/2 miles (air) north of Jarbo Gap, about 17 miles (air) north of Oroville. Comment
  CHSC91671  Orthilia secunda L. P. Janeway; Matt Brown 2005-7-13 8491 Butte Northern High Sierra Nevada. Plumas National Forest; Along Cedar Creek 0.4 km south of the Plumas County line; about 1.9 km northwest of North Fork Feather River. 1244 Comment
  UC474273  Orthilia secunda H. F. Copeland 1920-7-29 454 Butte Jonesville Comment
  RSA4168  Orthocarpus hispidus E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  SEINET10549690  Orthocarpus lacerus Mary Susan Taylor 1980-5-15 Taylor 2624 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
  CAS-BOT-BC254368  Oryza sativa Lowell Ahart 1984-9-17 4793 Butte Peter Ahart Ranch, Honcut. About 2.25 miles N and 0.25 mile E of Honcut, about 12 miles S of Oroville 50 Comment
  CHSC27254  Oxalis corniculata P. Moyer 1972-3-4 100 Butte CSUC campus. On lawn at 1st and Hazel. 60 Comment
  CHSC33965  Oxypolis occidentalis M. S. Taylor; L. Ahart 1981-8-15 4193 Butte N side of Coon Hollw Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  CHSC4395  Panicum acuminatum var. acuminatum R. L. Smith 1966-5-20 Butte Paradise, 5 mi sw of Post Office. Comment
  CHSC75573  Panicum acuminatum var. acuminatum G. F. Hrusa; T. D. Wilfred 1997-5-8 13758 Butte Sierra Nevada. Slope above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 720 Comment
  CHSC30524  Panicum capillare Diane H. Ikeda 1979-10-7 179 Butte Ca. 0.9 mi s of Chico city limits on Dayton Rd. Roadside. 28 Comment
  CHSC97773  Panicum capillare Lowell Ahart 2007-10-31 14513 Butte West of the official parking area, strand of Lake Oroville, Foreman Creek Area, about 1 mile south of Highway 162 (Oroville Quincy Road), about 7 miles (air) northeast of Oroville. 224 Comment
  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
  CHSC41981  Panicum dichotomiflorum Lowell Ahart 1986-11-14 5462 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  SEINET10507512  Panicum dichotomiflorum Lowell Ahart 1983-9-17 Ahart 4429 Butte T22N R4E se section 31. Ca. 1/8 mi ne of Kunkle Reservoir, south of Paradise. Foothill Woodland; 600 m. 600 Comment
  UC1563276  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 1990-9-30 6600 Butte below the Canyon Creek Bridge across Lake Oroville (below the high water line Lake Oroville, along the edges Canyon Creek); , along edges Canyon Creek 228 Comment
  CAS-BOT-BC181181  Paronychia ahartii J. D. Jokerst 1986-6-18 2744 Butte Unsurveyed portion county on the Richardson Spring 7.5 minute USGS topographic map the site is 145 mm from bottom edge of map, not including border, 181mm from left edge. 45 Comment
  CHSC26446  Paspalum dilatatum P. Moyer 1971-10-24 49 Butte CSUC Campus. South bank of Chico Ck. behind Archeology Bldg. 'B'. 60 Comment
  CHSC38839  Paspalum dilatatum Vernon Oswald 1983-6-3 630 Butte Upper Bidwell Park, Chico, on the side of the access road on the w bank of the diversion channel near Lindo Channel. 83 Comment
  JEPS110468  Paspalum dilatatum Lowell Ahart 2006-9-28 13384 Butte On the east side of the North Fork of the Feather River, on the west side of Hightway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel 445 Comment
  SEINET10509032  Paspalum distichum Mary Susan Taylor 1975-10-3 Taylor 928 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  CHSC29979  Pectocarya pusilla Lowell Ahart 1980-5-17 2290 Butte About .5 mi SE of Hurleton, in bottom of wash SE of Oak Grove Cemetery. 600 Comment
  JEPS115537  Pectocarya pusilla Lowell Ahart 2009-5-15 15700 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  CHSC25329  Pedicularis attollens Hayes; Warner 1977-8-14 38 Butte Marshy meadow along Butte Creek 10 mi n of Butte Meadows turn on Highway 32. 1280 Comment
  SD4769  Pedicularis attollens E. B. Copeland 1930-7-18 471 Butte Jonesville, grassy swamps 1550 Comment
  SBBG40344  Pedicularis densiflora J. Ingram, A. Ingram 1960-4-5 282 Butte ca. 2 mi N of Magalia Comment
  NY68337  Pedicularis groenlandica A. A. Heller 1928-7-10 14673 Butte At Butte Meadows in the yellow pine belt. Comment
  HSC66079  Pellaea andromedifolia M. S. Taylor 1980-3-30 2411 Butte Salmon hole, upper Bidwell Park, Chico 244 Comment
  SEINET10872478  Pellaea mucronata Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4115 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC86077  Pellaea mucronata var. mucronata R. D. Fischer; Paul Maslin 2003-12-24 20 Butte Sierra Nevada Range, off Hwy 32 between Chico and Forest Ranch. Located on the west side edge of the hwy, about 100 yds south of the gated main entrance to Big Chico Creek Ecological Reserve (BCCER). Located near the bottom of the cut bank behind the 'rock barrier' fence. 591 Comment
  UC1012163  Penstemon azureus var. azureus F. W. Pennell and A. A. Heller 1940-6-5 25683 Butte Route 24 above Oroville (along Feather River); Lassen Nat. Forest, along Feather River 548 Comment
  CHSC33337  Penstemon gracilentus R. Banchero; R. Schlising 1980-7-31 325 Butte Ca. 1.4 mi e of Snag Lake (East end). 1950 Comment
  SEINET10964583  Penstemon laetus subsp. leptosepalus Mary Susan Taylor 1980-7-6 Taylor 3078 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
  CDA13270  Penstemon laetus var. leptosepalus G. F. Hrusa, T. D. Wilfred 1996-7-9 13118 Butte Plumas National Forest; Jordan Creek, above falls before confluence with Marble Creek. Comment
  RSA325947  Penstemon neotericus J. P. Kroessig 1977-8-1 27 Butte Ca 16 km N of Forest Ranch, along E margin of Hwy 32, ca 15 mi S of jct of Hwy 32 and Butte Meadows Rd. 1170 Comment
  UCSB63872  Penstemon neotericus Ahart, Lowell 1997-8-1 Butte T25N, R5E, Section 33; on the west side of Little Kimshew Creek, where the basalt is eight sided; Snow Meadow; about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City 1524 Comment
  POM193323  Penstemon newberryi subsp. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville. 1900 Comment
  CAS-BOT-BC245682  Penstemon newberryi var. newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville 1900 Comment
  CHSC44729  Penstemon rydbergii R. Banchero 1980-6-26 266 Butte Chico Meadows, 0.95 mi N of the jct of Humboldt Rd and the Skyway. 1316 Comment
  CAS-BOT-BC239447  Penstemon rydbergii var. oreocharis Frank W. Peirson 1926-6-21 6772 Butte Butte Meadow, Humboldt Road Comment
  RSA0087540  Pentagramma pallida Mrs. R. M. Austin 1883-05 8 Butte Iron Canyon. Comment
  CHSC32722  Pentagramma triangularis M. S. Taylor 1981-4-8 3483 Butte E side of Dark Canyon Rd, 2.2 mi s of its jct with Big Bend Rds jct, ca. 3 air mi s of Jarbo Gap on Hwy 70. 426 Comment
  RSA0094695  Pentagramma triangularis C. C. Bruce 1897-06 1861 Butte [No location data on label] Comment
  CAS-BOT-BC77132  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-7-29 4241 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  UC1390030  Perideridia bolanderi subsp. involucrata T. I. Chuang, R. S. Mitchell, and G. Keator 1965-6-18 5994 Butte 6 mi e Oroville Comment
  CHSC45466  Persicaria hydropiper Lowell Ahart 1983-9-17 4437 Butte On the sides of a deep wash, about 1/4 mile south-east of Stirling City. 1097 Comment
  CHSC50681  Persicaria hydropiper Lowell Ahart 1990-6-16 6521 Butte Growing on wet mud along McCabe Creek, below the high water line at Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CAS-BOT-BC413702  Persicaria hydropiper Lowell Ahart 1985-11-7 5234 Butte On the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. Near Ponderosa Dam, Lake Oroville 277 Comment
  CHSC36528  Persicaria hydropiperoides L. Ahart 1982-8-22 3748 Butte Peter Ahart Ranch, ca. 1 mi n and 3 mi e of Honcut. On wet sand along the edge of North Honcut Creek. 50 Comment
  CHSC83088  Persicaria lapathifolia Lowell Ahart 2002-10-17 9992 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC94597  Persicaria lapathifolia Lowell Ahart 2006-9-11 13289 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC418951  Persicaria lapathifolia Lowell Ahart 1982-10-15 3899 Butte On the bottom of North Honcut Creek, about 1 mile north and 2 and 3/4 miles east of Honcut 50 Comment
  CAS-BOT-BC419175  Persicaria maculosa Lowell Ahart 1987-5-27 5706 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC89487  Persicaria punctata R. D. Fischer 2004-8-22 439 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located approx. .75 mile down 10 Mile House Road from Hwy 32. On edge of pond at ex-old cabin site. 248 Comment
  SJSU5410  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Neal Rd between Chico & Paradise 487 Comment
  CDA3408  Petrorhagia dubia T. C. Fuller 1963-7-15 10856 Butte East side of Highway 99E to Vina, 12.0 miles northwest of Chico. 0 Comment
  JEPS104201  Phacelia cicutaria var. cicutaria Lowell Ahart 2003-4-10 10065 Butte On the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 332 Comment
  RSA88080  Phacelia corymbosa J. T. Howell 1951-6-26 27522 Butte Near Pulga. 366 Comment
  UC1047036  Phacelia egena L. R. Heckard and J. R. Sweeney 1953-4-27 341 Butte Feather River Hwy about 12 mi ne Oroville (base of roadcuts) 152 Comment
  UC1602019  Phacelia heterophylla subsp. virgata C. G. Albertus 1933-7-1 38 Butte Promontory Point Chico Quadrangle (s slope) Comment
  POM252972  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte Somewhat shaded places along the Feather River Hwy in moist soil, 25 miles from Oroville Comment
  UC1187650  Phacelia purpusii Lincoln Constance, Elwood Molseed, John Weiler 1960-6-12 3677 Butte three mi above junction of Highway 32 and Butte Meadows road (33 min ne of Chico) 1219 Comment
  CHSC48476  Phacelia tanacetifolia Vernon Oswald 1985-4-15 1710 Butte Upper Bidwell Park, Chico, on the north rim ca. 1 mi e of the power lines. 320 Comment
  UCD88343  Phalaris brachystachys A. A. Heller 1902-5-3 5446 Butte Near Nelson. Comment
  CHSC20453  Phalaris caroliniana Dave Isle 1969-4-18 372 Butte 6 1/2 miles N. of Oroville on Cherokee Road (about 500+ yards W. of road on Table Mtn.). 289 Comment
  CHSC31634  Phalaris minor L. Ahart 1974-6-6 477 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC104839  Phalaris paradoxa Lowell Ahart 2010-6-9 16808 Butte At the old homestead, on the east side of Ten Mile House Road, about 5/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 265 Comment
  UC204880  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte near Nelson Comment
  CHSC37631  Philadelphus lewisii T. B. Devine 1979-10-5 598 Butte Feather River Canyon, 3/4 mi S of Arch Rock Tunnel, S of Hwy 70 adjacent to PG and E rest stop, along Bear Ranch Creek. 548 Comment
  CAS-BOT-BC250863  Phleum pratense John Thomas Howell 1973-7-9 49694 Butte NE of Pulga Bridge, Feather River highway 417 Comment
  CHSC43205  Phleum pratense Robert Banchero 1981-7-19 612 Butte Big Crane Valley. Meadow. 1584 Comment
  SEINET10657620  Phleum pratense Mary Susan Taylor 1982-1 Taylor 4728 Butte T33N R5E nw1/4se1/4 sec 30. Pulga SW quad. Weedy around large landing on saddle of ridde se of Flea Mt, n of Pulga. ca. 5 air mi e of Magalia. With Malacothrix floccifera, Onobrychis, Madia, Rumex acteosella, Penstemon. 1097 Comment
  UCD118254  Phlox speciosa W. R. Powell 1968-5-17 1510 Butte Along new Oro-Feather Road, 4 miles north-northwest of Rackerby. 548 Comment
  JEPS97541  Pholistoma auritum R. D. Stone and W. B. Davilla 1984-5-16 607 Butte ca. 0.2 mi NE of De Sabla Powerhouse drainage of Butte Creek 579 Comment
  JEPS122275  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2014-3-5 19321 Butte About 40 feet north on the northeast corner of Washington Street and Spruce Street, in Gridley. Comment
  CHSC75550  Phoradendron villosum G. F. Hrusa; T. D. Wilfred 1997-5-7 13733 Butte Serpentine SE slope above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 740 Comment
  CHSC49440  Physalis philadelphica Vernon Oswald 1987-7-23 3144 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CHSC34220  Physocarpus capitatus M. S. Taylor 1981-5-27 3805 Butte Along creek on Phillips property, 685 Wagstaff, Paradise. 579 Comment
  CHSC105954  Phytolacca americana Lowell Ahart 2010-9-24 17241 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
  CAS-BOT-BC434418  Phytolacca americana Lowell Ahart; Vern Oswald 1985-7-28 5159 Butte Along the road (La Porte Road) about 4 miles north-east of Bangor 304 Comment
  CAS-BOT-BC78450  Pinus contorta subsp. murrayana John H. Thomas 1974-11-3 17660 Butte Between Stirling City and Butte Meadows, north of Chico. 4.9 miles from Butte Meadows as measured along the road 1524 Comment
  SD9  Pinus jeffreyi E. B. Copeland 1929-7-19 333 Butte Jonesville 1550 Comment
  CAS-BOT-BC79018  Pinus ponderosa A. A. Heller 1917-7-26 12850 Butte Butte Meadows 1280 Comment
  CHSC110983  Pinus rigida Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18268 Butte Cedar Grove, south of parking area, Lower Bidwell Park, Chico. 71 Comment
  CHSC102851  Pinus sabiniana Lowell Ahart 2009-8-23 16300 Butte About 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 259 Comment
  CHSC31515  Pinus sabiniana L. Ahart 1971-3-17 66 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  SD28280  Pinus sabiniana M. V. Hood 1940-8-7 Butte Mount Chico 760 Comment
  CHSC2352  Piperia elongata R. M. Staley 1952-7-2 Butte Paradise. 518 Comment
  CAS-BOT-BC136583  Piperia leptopetala Chester Dudley 1940-6-1 s.n. Butte Field redacted by CAS, contact the data manager for more information Comment
  CHSC61359  Piperia transversa Lowell Ahart 1993-7-22 7070 Butte On the east side of the dirt road, about 1/4 mile north-west of Camp 18, about 5 (air) miles north-east of Feather Falls. 1219 Comment
  CHSC78349  Piperia transversa Lowell Ahart 2000-7-11 8570 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS102238  Piperia transversa L. P. Janeway 1996-5-27 4981 Butte Northern Sierra Nevada Foothills. Next to the road into Vinton Gulch; 100 ft east of Cherokee Road. 307 Comment
  HSC97350  Pistacia vera J. P. Smith, J. O. Sawyer 2007-9-2 12419 Butte State Route 45 near its junction with Fruitvale Road. Comment
  CHSC21379  Pittosporum tobira M. S. Taylor 1975-6-22 784 1/2 Butte Hedge on s side of Holt Hall, California State Univeristy, Chico, ornamental. Comment
  SEINET10529822  Pityrogramma triangularis Mary Susan Taylor 1980-3-8 Taylor 2369 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  RSA32945  Plagiobothrys austiniae A. A. Heller 1938-3-27 15001 Butte Near the Chico Airport. 91 Comment
  CHSC29044  Plagiobothrys bracteatus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-4-20 545 Butte Table Mountain, S. of Cherokee Rd. Around the edge of the high water mark of vernal pools. 403 Comment
  RSA633336  Plagiobothrys bracteatus Michael A. Vincent, Ethan H. Freid 1998-4-6 8131 Butte Table Mountain Comment
  CHSC31253  Plagiobothrys canescens R. A. Schlising 1980-4-7 3559 Butte NE of Bangor, ca. 1.1 mi ne of junction Ord-Bangor Highway, on LaPorte Road. At roadside. Comment
  CHSC44479  Plagiobothrys glyptocarpus Lowell Ahart 1988-5-12 5994 Butte On the bottom of a small wash, in a mined over area, 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
  SEINET10497374  Plagiobothrys glyptocarpus Lowell Ahart 1985-4-29 Ahart 4886 Butte Peter Ahart Ranch, about 2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 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
  CHSC47999  Plagiobothrys glyptocarpus var. glyptocarpus Vernon Oswald 1986-4-14 1068 Butte Upper Bidwell Park, Chico, on the edge of the first seep s of Upper Park Rd. and w of Parking Area O. 182 Comment
  UC1442671  Plagiobothrys glyptocarpus var. modestus Lowell Ahart 1978-4-27 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC31257  Plagiobothrys greenei Don Kroessig 1979-4-18 1 Butte N. Butte Co. NW of Singer Cr. 60 Comment
  RSA178642  Plagiobothrys greenei A. A. Heller 1926-3-22 13911 Butte East of Chico near the Hooker Oak, Comment
  UC881367  Plagiobothrys hispidulus A. A. Heller 1917-7-26 12841 Butte Butte Meadows 1280 Comment
  CHSC48001  Plagiobothrys shastensis Vernon Oswald 1983-4-4 263 Butte Upper Bidwell Park, Chico, on the north rim ca. 2 mi e of the power lines. 390 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
  CHSC112886  Plagiobothrys stipitatus var. micranthus Robin Carter; Sabrina Bell 2011-6-1 Butte Sacramento Valley. Ca 3 air mi E of Hwy 99, off SE corner of Thermalito Afterbay ca 0.5 mi NE of the Afterbay outlet and ca 170 ft NW of Larkin Road. 42 Comment
  CHSC115203  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2015-5-5 20137 Butte Located on the bottom of a large vernal pool, about 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Themalito Afterbay, about 1 mile southwest of Oroville Airport, about 6 miles (air) southwest of Oroville. Valley Grassland. 42 Comment
  CHSC39626  Plagiobothrys stipitatus var. micranthus Lowell Ahart 1983-5-12 3972 Butte Found along the power line, about 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  JEPS117194  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16819 Butte Bottom of Wyandotte Creek, under the government pole line, about 1 mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville 47 Comment
  RSA475191  Plagiobothrys stipitatus var. micranthus Aaron Liston, S. Meury 1988-5-28 743 -3 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  UCD80160  Plagiobothrys stipitatus var. micranthus CNPS SN Foothill Team 2005-3-31 SNFN 0073 e Butte CDFG North Table Mountain Wildlife Area, located in the middle, eastern portion of the southern-most table in the North Table Mountain complex. 310 Comment
  UCD121010  Plagiobothrys stipitatus var. micranthus W. R. Powell 1968-4-23 1470 Butte 2 miles south-southeast of Oroville. 71 Comment
  CHSC31263  Plagiobothrys tenellus R. A. Schlising 1980-3-24 3525 Butte NE of Chico at Covered Bridge over Butte Creek, at junction of Humbug and Honey Run Roads. Comment
  SEINET10497556  Plagiobothrys tenellus Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4290 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CHSC66158  Planodes virginica Vernon H. Oswald; Lowell Ahart 1996-5-27 7655 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Bed of marsh at the S end of Tract 2, Sanctuary II. 33 Comment
  CHSC42706  Plantago coronopus Lowell Ahart 1987-6-9 5745 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC24687  Plantago erecta D. Hattem 1976-4-10 18 Butte Ca. 1/2 mi e of e boundary of Upper Bidwell Park, ca. 50 m n of Big Chico Creek, ca. 10.2 mi e of Chico. 335 Comment
  RSA754583  Plantago erecta L. Ahart 2009-4-22 15584 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  UCD18734  Plantago erecta Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 27 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  HSC73114  Plantago erecta M. S. Taylor 1981-4-21 3549 Butte S side of Concow Rd. on ridge, .5 mi. S of its junction with Ponderosa Way, 2 mi. N of Lake Concow, 20 air mi. NE of Oroville 854 Comment
  CHSC52099  Plantago hookeriana John M. Lowrie 1979-4-16 Butte Humboldt Rd. 200 yds. sse of junc w/ Hwy. 32, ca. 6 mi e of Chico. 243 Comment
  CHSC38583  Plantago lanceolata Vernon Oswald 1983-5-4 428 Butte Upper Bidwell Park, Chico, beside trail on the n side of Chico Creek beneath the power lines. 91 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
  SEINET12030014  Platanus racemosa Unknown 1984-1 4535 Butte along North Honcut Creek, ca 1 mi N & 2.7 mi E of Honcut, on Peter Ahart Ranch 50 Comment
  CHSC41359  Platystemon californicus R. A. Schlising; N. A. Prouty 1982-4-9 4227 Butte S of Paradise off Pentz-Magalia Highway and SE of Lime Saddle Powerhouse. Comment
  CHSC19939  Plectritis ciliosa M. S. Taylor 1975-3-10 415 Butte On bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  UCD80810  Plectritis ciliosa CNPS SN Foothill Team 2005-3-22 SNFN 0063 c Butte CDPR, Oroville State Recreation Area, just south of a state park utility road out to water tanks; this road heads southwest from Highway 162, just N of junction with Forbestown Road. 329 Comment
  SEINET10905829  Plectritis ciliosa Mary Susan Taylor 1974-3-5 Taylor 76 Butte Along Cohasset Road, N of Chico. Assoc iates: Amsinckia intermedia, Dodecatheon clevelandii var. patulum, Blennospermum nanum, Orthocarpus erianthus. Comment
  CHSC101299  Plectritis ciliosa subsp. insignis Lowell Ahart 2009-4-22 15604 -A Butte South side of Guardians Trail, south 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
  SEINET10659121  Poa bolanderi Mary Susan Taylor 1980-8-2 Taylor 3206 Butte T27N, R5E center sec 32, Jonesville Quad. Humboldt Peak, N tip of the county. 2155 Comment
  SEINET10822494  Poa bulbosa Lowell Ahart 1986-4-4 Ahart 5242 Butte Near North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, bout 12 miles south of Oroville. Abundant. Foothill Woodland. 220 ft. "Bulbous Bluegrass." Comment
  CHSC99014  Poa compressa Lowell Ahart 2008-5-21 14776 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC54311  Poa howellii Vernon H. Oswald; Lowell Ahart 1991-6-5 4643 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek on the west side of Hwy 32, ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. Roadside banks. 670 Comment
  UC1586584  Poa howellii Vernon H. Oswald and Lowell Ahart 1991-6-5 4643 Butte ca 1.5 air mi nw Platte Mt Lookout (dirt rd to Minnie Ha Ha Mine on Big Chico Creek, w side of Hwy 32, between Forest Ranch and Lomo) 670 Comment
  CHSC61547  Poa palustris Lowell Ahart 1993-6-26 7014 Butte On the edges of a meadow, north of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC8588  Poa pratensis D. McClain 1969-4-18 64 Butte 100 yds. s. of Upper Bidwell Rd., 4.5 mi. e. of Upper Bidwell Park Entrance, Chico. 67 Comment
  CHSC28857  Poa secunda subsp. secunda J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 459 Butte Around edge of vernal pool. Ca 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  CHSC40460  Poa secunda subsp. secunda Lowell Ahart 1985-5-15 4996 Butte On the sides of a dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC6070  Poa secunda subsp. secunda B. Wilson 1968-4-19 Butte 2 mi s of Cherokee on Table Mountain. Comment
  UC762428  Pogogyne douglasii R. F. Hoover 1937-5-19 2243 Butte 10 mi. NW of Chico Comment
  HSC32603  Pogogyne zizyphoroides Linda M. Barker 1974-4-20 150 Butte Pentz and Clark Rds. jct., 1 mi. NW of Hwy. 70 61 Comment
  CHSC106868  Polycarpon tetraphyllum Lowell Ahart 2011-5-1 17338 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC40790  Polycarpon tetraphyllum Lowell Ahart 1985-6-9 5041 Butte Sidewalk on the east side of Cherry Street, between 9th. and 8th. Street, Chico. 60 Comment
  JEPS120005  Polycarpon tetraphyllum var. tetraphyllum Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17911 Butte Near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC28008  Polygala cornuta M. S. Taylor 1978-7-21 1798 Butte Lake Madrone, at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  UCD109713  Polygala cornuta L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CAS-BOT-BC167552  Polygala cornuta var. cornuta John Thomas Howell 1962-6-15 37473 Butte Magalia 731 Comment
  JEPS121981  Polygonum aviculare Lowell Ahart 2014-7-7 19563 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  SEINET10838838  Polygonum aviculare Mary Susan Taylor 1975-5-24 Taylor 770 Butte Lower Bidwell park, between Cork Oak Grove and Cypress Grove Picnic Area, Chico. 61 Comment
  CAS-BOT-BC414196  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  CAS-BOT-BC109130  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
  CHSC103978  Polygonum bidwelliae Lowell Ahart 2010-5-7 16622 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
  CAS-BOT-BC109154  Polygonum bolanderi A. A. Heller 1914-7-22 11584 Butte Little Summit near Butte Meadows. 1463 Comment
  JEPS95169  Polygonum bolanderi Vernon Oswald and Lowell Ahart 1997-9-9 8861 Butte 2.0 mi ne of Lomo (Humboldt Road between Lomo and Butte Meadows, near the 4833 ft. benchmark); Humboldt Road Comment
  CHSC45857  Polygonum californicum Lowell Ahart 1974-10-18 663 Butte Along the edges of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC63716  Polygonum californicum Lowell Ahart 1994-10-10 7562 Butte On the banks 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
  UC204384  Polygonum californicum A. A. Heller 1914-9-23 11763 Butte hills 8 mi n Oroville Comment
  UC85631  Polygonum californicum Mrs. R. M. Austin 1883-1 Butte Chico Comment
  UC1609060  Polygonum douglasii subsp. douglasii Lowell Ahart 1993-6-20 6984 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC203866  Polygonum douglasii subsp. douglasii A. A. Heller 1914-7-23 11603 Butte woods about Chico Meadows 1219 Comment
  JEPS113314  Polygonum douglasii subsp. spergulariiforme L. P. Janeway 2006-6-25 8694 Butte Northern High Sierra Nevada. West side of Coutolenc Road about 150 m north of Skyway; at Magalia Serpentine. Comment
  UC1586531  Polygonum hydropiperoides Lowell Ahart 1991-9-14 6716 Butte about 2 mi e Honcut (sides of a large reservoir); Joie Osgood Ranch 45 Comment
  CDA13839  Polygonum lapathifolium G. F. Hrusa, T. D. Wilfred 1996-9-5 13567 Butte Butte Basin; Immed. W of Butte Creek at Western Canal District Dam. Comment
  SEINET13711418  Polygonum persicaria Lowell William Ahart, Lowell William Ahart 1999-1 8270 Butte 12 Air Mi SW of Chico, 2 Mi SE Ordbend, Sacramento River Comment
  UC1136156  Polygonum persicaria H. S. Yates 1936-8-13 6114 Butte 3/4 mi e Butte Meadows; Paynes Creek Quadrangle Comment
  UC1594696  Polygonum polygaloides subsp. kelloggii Lowell Ahart 1992-7-21 6804 Butte Coon Hollow; sides of snow lake on s side, about 2 air mi ne of Philbrook Reservoir 1737 Comment
  CAS-BOT-BC419894  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Sierra Nevada at Chico Meadows 1219 Comment
  POM120121  Polypodium californicum C. C. Bruce 1897-01 1868 Butte Little Chico Comment
  CAS-BOT-BC71875  Polypodium californicum E. B. Copeland 1902-12-1 s.n. Butte Chico Canyon Comment
  CHSC52380  Polypodium calirhiza Louis C. Bock 1987-4-23 12 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  UC122771  Polypodium calirhiza Mrs. R. M. Austin 1883-4-1 313 Butte bluffs - Little Chico Creek Little Chico Creek Comment
  CAS-BOT-BC76865  Polypodium glycyrrhiza A. A. Heller 1919-3-29 13089 Butte Feather River near Yankee Hill Comment
  CHSC61376  Polypogon australis Lowell Ahart 1993-7-23 7098 Butte Along the west side of Fall River, about 100 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UCD90975  Polypogon australis A. A. Heller 1914-5-19 11419 Butte 8 miles north of Oroville Comment
  CHSC36518  Polypogon interruptus L. Ahart 1982-5-28 3442 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC38851  Polypogon interruptus Vernon Oswald 1983-5-8 448 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five-Mile Rec. Area and the flood-control gates. 79 Comment
  CHSC47630  Polypogon interruptus Lowell Ahart 1977-5-8 1364 Butte Wash, Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  UC1562415  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  CHSC37138  Polypogon monspeliensis L. Ahart 1982-7-18 3681 Butte Along sides and bottom of wash. Peter Ahart Ranch, ca. 1 1/2 mi n and 1 1/2 mi e of Honcut. 50 Comment
  JEPS116026  Polypogon monspeliensis Lowell Ahart 2009-7-9 16012 Butte At the drain pipe, on the east side of Ten Mile House Road, Upper Bidwell Park, about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 209 Comment
  CHSC116276  Polystichum californicum Lowell Ahart 2015-10-24 20585 Butte On the east side of Big Chico Creek, about 40 yards west of 10 Mile House Road, about 3/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 197 Comment
  SEINET10530115  Polystichum imbricans Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3470 Butte T20N R7E ne sec 32; Clipper Mills quad. South side of Forbestown Reservoir, in serpentine cliff, south side of Rd 20N29, ca. 3 air mi north of Woodleaf. l800 ft. 549 Comment
  CHSC113598  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19724 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  JEPS122332  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19724 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. Comment
  RSA754818  Polystichum imbricans subsp. curtum L. Ahart 2009-6-30 15971 Butte E bank of Big Chico Creek, on W side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CHSC82489  Polystichum imbricans subsp. imbricans Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9735 Butte On a mountainside, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 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
  CHSC92384  Polystichum imbricans subsp. imbricans Lowell Ahart 2005-11-12 12488 Butte On the west side of Dark Canyon Creek, about 150 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. 293 Comment
  CAS-BOT-BC76710  Polystichum lemmonii V. Oswald; L. Ahart 1988-7-29 3655 Butte Ca. 5 mi. (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  SEINET10867041  Polystichum munitum subsp. nudatum Mary Susan Taylor 1979-3-20 Taylor 1941 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC72491  Polystichum scopulinum Vernon Oswald; Lowell Ahart 1987-8-5 3189 Butte N flank of Humboldt Peak on the Butte-Plumas county border, S of the Pacific Crest Trail 2072 Comment
  CHSC44608  Polystichum scopulinum Vernon Oswald; Lowell Ahart 1987-8-5 3189 Butte Rock outcrops skirting the n flank of Humboldt Peak on the Butte-Plumas county border, s of the Pacific Crest Trail. 2072 Comment
  UC176403  Populus fremontii subsp. fremontii A. A. Heller 1913-4-4 10693 Butte levee at Oroville; levee at Oroville Comment
  CHSC33402  Populus tremuloides R. E. Preston 1981-7-9 21 Butte Ca. 75 m of West Branch of Feather River, ca. 0.5 km s of Snag Lake, ca. 4.8 km sse of Jonesville. 1708 Comment
  CHSC33955  Populus tremuloides M. S. Taylor; L. Ahart 1981-8-15 4189 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC42011  Portulaca oleracea Lowell Ahart 1986-11-3 5414 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC43278  Potamogeton crispus Lowell Ahart 1987-9-4 5873 Butte In drain ditch, along the Biggs Princeton Highway, under P.G. and E. power lines, about 1 mile west of Biggs. 28 Comment
  CHSC75435  Potamogeton diversifolius Lowell Ahart 1999-6-12 8089 Butte In a pond, on the west side of the dam, large reservoir north of Beatson Hollow, North Table Mountain, about 2 1/2 miles (air) west of the entrance gates along the west side of Cherokee Road, about 7 miles (air) north of Oroville. 295 Comment
  POM193390  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville. In shallow border of lily pond. 1700 Comment
  CHSC28675  Potentilla glandulosa M. S. Taylor 1978-7-18 1680 Butte On w side of Hwy 32, ca. 1/4 mi n of Forest Ranch. 701 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
  CHSC45608  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-5-20 2079 Butte Along Hwy 70 2.1 mi NE of Pulga Bridge; N Fk Feather River near Heinz Cr. 472 Comment
  CAS-BOT-BC158499  Potentilla millefolia Vesta Holt 1932-5-1 s.n. Butte Mountains near Chico Comment
  SEINET12331912  Poterium sanguisorba Unknown 1985-1 4958 Butte E branch of Potter Ravine, ca 2.25 mi N of Oroville Dam 350 Comment
  RSA0013899  Proboscidea louisianica Aaron Liston, S. Meury 1988-5-28 743 -2 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Road, 1/8 mi. E of Highway 99. 55 Comment
  UC204597  Proboscidea louisianica subsp. louisianica W. C. Morgan 1918-9-2 Butte Chico 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
  JEPS117525  Proboscidea lutea Lowell Ahart 2010-9-24 17238 Butte Near the east edge of the Golf Course, about 10 yards north of the footbridge, northeast of the Golf Club House, on the north side of Big Chico Creek, Bidwell Park. 94 Comment
  CHSC44399  Prunella vulgaris Lowell Ahart 1988-6-28 6082 Butte Along North Honcut Creek, Joie Osgood Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut. 39 Comment
  CHSC52699  Prunus L. P. Janeway 1990-3-25 3660 Butte Campus of California State University, Chico. N side of Glenn Hall. 59 Comment
  CHSC110109  Prunus cerasifera L. P. Janeway 2012-3-21 10800 Butte Sacramento Valley. City of Chico; Lower Bidwell Park, north side Big Chico Creek between creek and Vallombrosa Ave near Crister Ave. 62 Comment
  CHSC110113  Prunus dulcis L. P. Janeway 2012-3-6 10790 Butte Sacramento Valley. Oroville; south side of the Feather River just northwest of Centennial Park. At north edge of bicycle trail along north slope of the levee, at top of steep bank down to the river. 49 Comment
  CAS-BOT-BC159926  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte Jonesville. On ridge west of North Willow Creek 1650 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
  CAS-BOT-BC151220  Prunus virginiana var. demissa A. A. Heller 1916-4-13 12320 Butte Stilson Canyon east of Chico Comment
  CHSC36394  Pseudobahia heermannii Donald M. Burk 1982-4-24 112 Butte Ca. 0.6 mi. W. of Elliot Spring House, along top of canyon on N. side of Neal Rd. 243 Comment
  CHSC49599  Pseudobahia heermannii Vernon H. Oswald 1990-1-31 4133 Butte Lime Saddle Recreation Area, West Fork of Lake Oroville, near Nelson Bar Rd launch area. Just above high-water level of the lake, just east of the end of the road. 274 Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 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
  JEPS115001  Pseudognaphalium luteoalbum Lowell Ahart 2007-11-3 14553 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
  JEPS120611  Pseudognaphalium luteoalbum Lowell Ahart 2013-11-13 19229 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
  CHSC66287  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte In a field, Peter Ahart Ranch, about 1 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1562448  Pseudognaphalium stramineum Lowell Ahart 1990-4-28 6467 Butte about 4.5 mi sw of Oroville (about 0.25 mi s of the feather River, about 0.4 mi w of Pacific Heights Road, in the borrow area) 30 Comment
  UC896905  Pseudognaphalium thermale A. A. Heller 1916-9-23 12659 Butte near Forest Ranch (Sierra foothills); Sierra Comment
  SEINET10530926  Pseudotsuga menziesii Mary Susan Taylor 1980-5-27 Taylor 2656 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
  UCD135121  Pseudotsuga menziesii var. menziesii John Thomas Howell 1962-6-15 37434 Butte Sierra Nevada, Magalia. 731 Comment
  CAS-BOT-BC361739  Psilocarphus brevissimus var. brevissimus A. A. Heller 1914-4-24 11315 Butte Chico-Oroville road 7-8 miles from Chico Comment
  CHSC29289  Psilocarphus oregonus R. A. Schlising 1980-4-23 3574 Butte Between Singer Creek and Cana-Pine Creek Road (Wurlitzer Ranch). 54 Comment
  UC478459  Psilocarphus oregonus E. B. Copeland 1931-7-20 698 Butte near Butte Creek House; Butte Creek, Jonesville 1700 Comment
  SEINET10904902  Psilocarphus tenellus Lowell Ahart 1983-8-16 Ahart 4304 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  UCD117075  Ptelea crenulata J. P. Smith; J. O. Sawyer 1973-4-14 6063 Butte Rock Road 1 mile W of Cohasset Road near Chico. Comment
  CAS-BOT-BC72549  Pteridium aquilinum Lowell Ahart 1983-9-21 4463 Butte along French Creek, about 3 miles north of the Sky Creek Dam, north of Strawberry Valley 900 Comment
  CHSC11804  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  SD3533  Pterospora andromedea E. B. Copeland 1931-7-15 Butte Jonesville 1550 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
  SEINET10499008  Pycnanthemum californicum Lowell Ahart 1983-9-17 Ahart 4436 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 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
  CHSC4686  Pyrola aphylla R. Carter 1966-6-15 442 Butte 1.5 mi. S of Brush Creek along E side of Bald Rock Rd., ca. 8 yds off road. 1097 Comment
  CHSC61331  Pyrola aphylla Lowell Ahart 1993-7-22 7077 Butte On the west side of the dirt road, near Fall River, about 1/4 mile north-west of the bridge across Fall River, about 6 miles (air) north-east of Feather Falls. 1036 Comment
  POM219525  Pyrola californica E. B. Copeland 1931-7-1 670 Butte Jonesville. 1500 Comment
  UC177571  Pyrola picta H. M. Hall 1914-7-23 9778 Butte near Jonesville 1737 Comment
  UC177572  Pyrola picta H. M. Hall 1914-7-23 9779 Butte near Jonesville 1584 Comment
  JEPS119898  Pyrus communis Lowell Ahart, Linnea Hanson, Josephine Guardino 2012-5-23 18109 Butte Along the horse trail, north of Table 32, about 50 yards south of Vallombrosa Avenue, southwest of Crister, Lower Bidwell Park, Chico. Comment
  CDA21847  Quercus berberidifolia J. T. Howell 1955-6-15 30492 Butte 6 miles from Paradise on road to Pentz. Comment
  UCD45252  Quercus berberidifolia John Thomas Howell 1955-6-15 30492 Butte Volcanic slope, 6 miles from Paradise, on road to Pentz, 1400 ft, Butte County. 426 Comment
  UCD45257  Quercus berberidifolia A. E. Wieslander 1927-6-29 s.n. Butte Near Fourteen-mile House, Humboldt road from Chico. Comment
  CHSC20506  Quercus chrysolepis M. S. Taylor 1975-5-2 549 Butte Ca. 1/4 mi w of Cohasset Rd, ca. 21 mi ne of Chico. 1036 Comment
  UC1135411  Quercus chrysolepis J. E. Sowder 1933-8-4 122 Butte slope above de Sable Power House; Chico Quad. 609 Comment
  UCR231084  Quercus chrysolepis Anna M. Hurlbutt 2009-8-12 016 Butte Northern Sierra Nevada Mtns., Paradise, yard of residence at end of Kerr Lane 526 Comment
  CAS-BOT-BC86112  Quercus dumosa A. A. Heller 1916-9-8 12650 Butte Ten mile house E of Chico Comment
  CHSC39783  Quercus kelloggii Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  CHSC7036  Quercus kelloggii Lynn R. Thomas 1969-4-18 108 Butte NW edge of Calif. 32, ca. 2 mi ne of Forest Ranch. 731 Comment
  CHSC96799  Quercus kelloggii Lowell Ahart 2007-5-16 13890 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  CAS-BOT-BC61583  Quercus lobata Lowell Ahart 1979-5-12 s.n. Butte near banks of Honcut Creek 50 Comment
  JEPS107327  Quercus lobata Lowell Ahart 2005-4-14 11710 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  RSA134791  Quercus lobata Percy C. Everett, E. K. Balls 1959-10-20 23905 Butte Bidwell Park, Chico. Comment
  CHSC6044  Quercus nigra M. MacArthur 1968-6-17 168 Butte Half way between LS bld. and Big Chico Creek, Chico State College. 60 Comment
  CHSC100471  Quercus robur Lowell Ahart; John Dittes 2008-11-14 15452 Butte In the south part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC25469  Quercus vacciniifolia Hayes; Warner 1977-9-11 85 Butte Along Humboldt Rd. exactly 2.5 mi below Humboldt Summit (Butte-Tehama Co. line) or exactly 1.1 mi from the end of the paved portion of Humboldt Rd. above Jonesville. 1676 Comment
  CHSC113211  Ranunculus aquatilis var. aquatilis Lowell Ahart 2014-4-16 19370 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  POM150530  Ranunculus aquatilis var. capillaceus E. B. Copeland 1903-5-30 3276 Butte Chico. Comment
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Jan 23 2011
  CHSC45399  Ranunculus bonariensis var. trisepalus Lowell Ahart 1974-4-7 357 Butte In a pond, Peter Ahart Ranch, about 1 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 42 Comment
  RSA0114656  Ranunculus bonariensis var. trisepalus Lowell A. Ahart 2015-5-5 20138 Butte About 30 yards north of Larkin Road, about 400 yards south of Larkin Road Boat Launch Area, near the Thermalito Afterbay, about 1 mile southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville. 43 Comment
  CHSC1478  Ranunculus canus R. M. Staley 1952-7-5 Butte Paradise. 548 Comment
  SEINET10535965  Ranunculus canus Mary Susan Taylor 1980-4-1 Taylor 2426 Butte T22N R2E sc sec 25. In Foothill Savan nah, on bluffs above and S of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge ca. 6 mi E of Chico. 183 Comment
  SEINET10535967  Ranunculus canus Mary Susan Taylor 1975-3-3 Taylor 397 Butte On E side of Richardson Springs Rd, between road and creek, ca. 2 mi NE of its jct with Cohasset Rd, ca. 6 mi N of Chico. Associates: Pinus sabiniana, Brodiaea pulchella, Pityrogramma triangularis, Galium nuttallii. 91 Comment
  SEINET8359672  Ranunculus canus A. Heller 1926-3-31 13916 Butte Nelson, 14 miles S of Chico. Comment
  UC827667  Ranunculus canus var. canus A. A. Heller 1915-3-19 11771 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC101166  Ranunculus muricatus Lowell Ahart 2009-5-15 15698 Butte About 60 yards northwest of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 267 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  UC204949  Ranunculus occidentalis A. A. Heller 1914-6-22 11498 Butte Chico Meadows Sierra Nevada 1219 Comment
  CHSC110258  Ranunculus occidentalis var. ultramontanus L. P. Janeway 2012-6-2 10839 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  RSA268507  Ranunculus occidentalis var. ultramontanus J. H. Morrison 1929-06 s.n. Butte Oroville - Quincy, Sierra Nevada. 1829 Comment
  CAS-BOT-BC74266  Raphanus sativus Lowell Ahart 1973-3-24 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  JEPS88909  Rhamnus rubra Lowell Ahart 1994-6-5 7309 Butte about 3.5 mi sw Forbestown (s of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  RSA30407  Rhamnus tomentella subsp. tomentella A. A. Heller 1915-5-16 s.n. Butte Chico-Centerville road 3 miles from Chico at the lower limit of the digger pine belt Comment
  CHSC6650  Rhododendron M. MacArthur 1968-6-22 273 Butte Entrance of SM bld., Chico State College. 60 Comment
  CHSC2392  Rhododendron occidentale R. Carter 1965-6-1 216 Butte Found on Bald Rock Rd. 1.8 mi. E of intersection with Zinc Rd. on S side of road. 883 Comment
  CHSC21041  Rhus aromatica M. S. Taylor 1975-6-30 820 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 ft n of Greenwood Store, Cohasset. 853 Comment
  CHSC24683  Rhus aromatica D. Hattem 1976-4-10 5 Butte Ca. 50 m ne of Big Chico Creek, ca. 10 mi ne of Chico. 304 Comment
  CHSC51992  Rhus aromatica L. P. Janeway 1988-4-10 2617 Butte Butte Cyn; grassy slope below Centerville Rd (Humbug Rd) 1.0 mi NE of Honey Run Rd. 115 Comment
  UCD116882  Rhus aromatica Joseph M. DiTomaso 1976-5-23 462 Butte Lake Oroville. Comment
  JEPS98684  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CAS-BOT-BC111910  Rhynchospora capitellata V. Oswald; Lowell Ahart 1987-7-19 3135 Butte Ca. 0.3 mi (air) e of Bald Mt. Lookout Tower, ca. 0.3 mi ne of the spring and water tank. 1706 Comment
  CAS-BOT-BC93277  Ribes cereum E. B. Copeland 1931-6-11 645 Butte Jonesville. Kirby's Meadow. 1800 Comment
  CAS-BOT-BC212670  Ribes nevadense A. A. Heller 1939-4-26 15385 Butte Near the river at the foot of the grade leading down from Stirling City Comment
  SBBG126087  Ribes roezlii L. Ahart 2012-2-22 17753 Butte S side of Ten Mi House Rd, ca 0.75 mi W of Hwy 32, ca 9 mi NE of Chico 387 Comment
  SBBG17303  Ribes roezlii M. Vincent 1962-4-15 183 Butte 1 mi S of Stirling City on the Skyway Comment
  SEINET10482951  Ribes roezlii Mary Susan Taylor 1978-9-9 Taylor 1915 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC198960  Ribes roezlii var. roezlii Jim Riley 1923-3-23 s.n. Butte Forest above De Sabla Comment
  JEPS118634  Robinia pseudoacacia L. P. Janeway 2011-5-2 10251 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  CHSC101266  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC97353  Romulea rosea var. australis Paul Maslin 2006-4-26 50 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609773E 4410100N. 249 Comment
  SEINET13711417  Rorippa curvisiliqua Lowell William Ahart, Lowell William Ahart 1999-1 8155 Butte 12 Mi SW Chico, 2 Mi SE Ordbend, Sacramento River Comment
  CHSC94178  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field. 31 Comment
  JEPS110370  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field 31 Comment
  CHSC98950  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-8 14713 A 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
  CHSC75990  Rorippa palustris var. hispida Lowell Ahart; Vernon H. Oswald 1999-8-13 8182 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC92507  Rorippa palustris var. occidentalis Lowell Ahart 2005-12-11 12509 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
  JEPS104092  Rosa bridgesii Lowell Ahart 2003-7-12 10373 Butte On both sides of Bald Rock Rd, ca 3 mi south of the Brush Creek Work Center, ca 15 mi (air) ne of Oroville. 1015 Comment
  CDA26269  Rosa californica L. Ahart 2002-6-2 9680 Butte On the north side of Black Bart Road, about 1 1/2 miles east of the intersection of Forbestown Road and Black Bart Road, about 12 miles (air) southeast of Oroville. Comment
  CHSC30739  Rosa gymnocarpa M. S. Taylor 1980-5-27 2732 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of its jct with Oroville-Quincy Hwy, ca. 0.5 mi s of Lake Madrone. 701 Comment
  UC1862495  Rosa pisocarpa subsp. ahartii Barbara Ertter with Lowell Ahart 2006-8-1 18750 b Butte Black Bart Road 1.3 mi from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville 655 Comment
  CHSC5958  Rosmarinus officinalis M. MacArthur 1968-6-17 196 Butte N corner of Administration bld., Chico State College campus. 60 Comment
  CAS-BOT-BC274229  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC274232  Rostraria cristata A. A. Heller 1914-5-19 11417 Butte Hills 8 miles north of Oroville Comment
  SD130474  Rotala indica Lowell Ahart 1980-9-28 2659 Butte Peter Ahart Ranch, Honcut. 49 Comment
  CHSC76419  Rotala ramosior Lowell Ahart 1999-10-28 8305 Butte On the west side of a large pond, large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CDA31997  Rubus armeniacus L. Ahart 2008-5-23 15771 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. Comment
  CAS-BOT-BC156613  Rubus bifrons Clarence R. Quick 1962-8-19 62 -80 Butte Plumas National Forest. Corner Mdw., Coyote Gap - Four Trees road 1463 Comment
  CAS-BOT-BC147105  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CHSC35220  Rubus glaucifolius M. S. Taylor 1981-5-5 3610 Butte W side of spur rd, ca. 1.5 air mi nw of its jct with Bryant Ravine Rd (21N35Y), ca. 1 air mi n of Feather Falls. 792 Comment
  UC861595  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte borders Chico meadows 1219 Comment
  SEINET10970325  Rubus glaucifolius Mary Susan Taylor 1981-4-28 Taylor 3570 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
  CHSC45820  Rubus laciniatus L. P. Janeway 1987-6-20 2263 Butte Slope above Rock Cr 2.0 mi from Lumpkin Ridge on rd to Moorville Ridge. Along edge of rd. 1104 Comment
  SBBG3096  Rubus laciniatus H. and M. Dearing 1938-6-21 2048 Butte 20 mi NE of Chico, near Shuffleston Station Comment
  CHSC46045  Rubus parviflorus L. P. Janeway 1987-6-19 2223 Butte Along Sly Cr at crossing of rd to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Cyn bottom near the cr. 1097 Comment
  UCD89070  Rubus pensilvanicus Lindsay Clark 2008-5-30 BWP 19 Butte Bidwell Park in Chico, off of parking lot H (Day Camp), follow Yahi trail southwest. Next to creek. 88 Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 Comment
  RSA755442  Rubus ursinus L. Ahart 2009-5-23 15736 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  RSA754878  Rumex acetosella L. Ahart 2009-6-19 15940 Butte Open area north of pond and table, about 50 yards south of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  CHSC111172  Rumex conglomeratus Lowell Ahart 2013-6-18 18805 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC39084  Rumex obtusifolius subsp. agrestis R. A. Schlising 1981-7-11 4135 Butte Central part of county, 1.0 mi s of Coyote Gap. 1143 Comment
  CHSC116700  Rumex pulcher Lowell Ahart 2016-5-14 20828 Butte Bottom of a small wash, open pasture field, about 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC43716  Rumex salicifolius Vernon Oswald 1987-7-13 3102 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  JEPS87136  Rumex salicifolius var. denticulatus Lowell Ahart 1992-5-9 6768 Butte about 2 (air) mi n Oroville (e of Cherokee Road); Lake Oroville Recreation Area 91 Comment
  SEINET10537603  Sagina apetala Lowell Ahart 1985-3-4 Ahart 4842 Butte At the Palermo Post Office, Palermo. Comment
  CHSC28729  Sagina decumbens subsp. occidentalis R. A. Schlising 1979-4-8 3356 Butte Richvale vernal pools, 1/4 mile S of jct Hwy 162 (E to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC45581  Sagina decumbens subsp. occidentalis Lowell Ahart 1980-5-4 2216 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
  JEPS114591  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-2 14709 Butte Below the high water line of Lake Oroville, about 100 yards southwest of the Enterprise Boat Launch Area, about 10-1/2 miles (air) northeast of Oroville 238 Comment
  JEPS127102  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-4-15 20746 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  UCD138068  Sagittaria sanfordii J. Jones 1924-11-20 s.n. Butte Biggs. Comment
  UCD138071  Sagittaria sanfordii Herbert L. Mason; Verne Grant 1946-8-8 13001 Butte West Gridley road one mile west of Gridley - Pennington Highway. Comment
  CHSC8626  Salix exigua E. L. Smith 1969-3-29 Butte 2 Mi. SE Chico. Comment
  CHSC108837  Salix exigua var. hindsiana Lowell Ahart 2012-4-17 17884 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC111739  Salix exigua var. hindsiana Lowell Ahart 2012-6-28 18237 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC109081  Salix gooddingii Lowell Ahart 2012-4-20 17892 Butte @0 yards north of the table at the old homestead, about 50 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. 259 Comment
  JEPS119537  Salix gooddingii Lowell Ahart 2012-4-20 17893 Butte About 100 yards south of the intersection of South Rim Trail and and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  LA208653  Salix gooddingii A. A. Heller; 1914-4-6 11262 Butte Chico-Oroville rd 12 mi from Chico on the banks of Dry Creek Comment
  JEPS119596  Salix laevigata Lowell Ahart 2012-4-9 17848 Butte About 50 feet east of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. Comment
  RSA0045619  Salix laevigata Lowell A. Ahart 2012-4-9 17848 Butte About 50 feet west of South Rim Trail, south part of Upper Bidwell Park, about 2 1/2 miles (air) northeast of Chico. 209 Comment
  CHSC84643  Salix lasiolepis var. lasiolepis Matt Quinn 2001-4-29 50 Butte Found along edge of Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CHSC9695  Salix lasiolepis var. lasiolepis E. L. Smith 1971-9-12 1067 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CHSC9696  Salix lasiolepis var. sandbergii E. L. Smith 1971-9-12 1068 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  CAS-BOT-BC124575  Salix lemmonii E. B. Copeland 1931-6-11 620 a Butte Jonesville, Kirby's Meadow 1750 Comment
  SBBG29070  Salix lemmonii E. B. Copeland 1931-8-1 Butte Jonesville 1700 Comment
  CHSC11989  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte Jonesville. 1500 Comment
  CHSC34210  Salix melanopsis J. D. Jokerst; L. Ahart 1981-9-26 1480 Butte 5 mi W of Chico at Bidwell River State Park (Chico Landing). Comment
  POM166819  Salix melanopsis E. B. Copeland 1903-7-27 3491 Butte Chico. Butte Creek. Comment
  CAS-BOT-BC221113  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte Forest Ranch 822 Comment
  SEINET13947656 Image available Salvia sonomensis A. A. Heller 1915-1 11810 Butte Near Cohasset, near the upper limit of the digger pine in the Sierra foothills Comment
  CHSC38290  Sambucus mexicana Vernon Oswald 1983-5-15 497 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Chico Creek near the end of the pavement. 91 Comment
  CHSC46832  Sambucus mexicana R. A. Schlising 1987-7-19 4535 Butte Coon Hollow. Comment
  CHSC66435  Sambucus mexicana Vernon H. Oswald; Lowell Ahart 1996-6-10 7742 .1 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
  UC1575631  Sambucus mexicana Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2095 Butte near Chico Comment
  SEINET10465318  Sambucus mexicana Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4254 Butte T22N R7E nw sec 31. Ca. 2 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 900 m. 900 Comment
  SEINET5735621 Image available Sanguisorba minor Lowell Ahart 1985-1 4958 Butte E branch of Potter Ravine, ca. 2.25 mi N of Oroville Dam.; Oroville Dam 350 Comment
  CHSC3167  Sanicula bipinnata Dona Kingsford 1966-3-12 Butte Location: 1.5 miles NE of Hooker Oak Tree in open dry field, Chico. Comment
  UC73328  Sanicula bipinnata Miss M. Alice King 1905-1 Butte near College City (Sacramento Valley); Sacramento Valley Comment
  CDA15389  Sanicula bipinnatifida G. F. Hrusa 1997-4-3 13692 Butte Sierra Nevada; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 m. N of Magalia. Comment
  UC726870  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Paradise Comment
  UC1562355  Sanicula tuberosa Vernon Oswald and Lowell Ahart 1990-6-27 4329 Butte Oro--Quincy Hwy at S edge of Walker Plains, 0.3 mi W-NW of Buckeye (site) 1536 Comment
  CAS-BOT-BC466194  Sarcodes sanguinea Herbert Copeland 1920-5-22 s.n. Butte Jonesville Comment
  CAS-BOT-BC436859  Saxifraga Lowell Ahart 1975-3-3 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  SEINET12216574  Saxifraga californica G. H. Snodgrass 1981-1 PT- 16 Butte ca 8 mi E of Chico, S side of Butte Creek Canyon above Covered Bridge on Humbug Rd 244 Comment
  CHSC65885  Scandix pecten-veneris Vernon H. Oswald 1996-4-20 7409 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the SE corner of Tract 5, Sanctuary II. Sacramento Valley. 32 Comment
  JEPS124202  Scandix pecten-veneris Lowell Ahart 2015-4-13 20040 Butte Vinton Gulch, about 10 miles (air) north of Oroville. Comment
  CAS-BOT-BC111372  Schoenoplectus acutus var. occidentalis Herbert L. Mason; Verne Grant 1946-8-14 13031 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Comment
  CHSC4428  Schoenoplectus acutus var. occidentalis 1966-5-21 Butte Bare Hole, Upper Bidwell Park, Chico. Comment
  CHSC66168  Schoenoplectus acutus var. occidentalis Vernon H. Oswald 1996-5-27 7656 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Along a drainage on the bed of seasonal marsh at the SW corner of Tract 2, Sanc-tuary II. 33 Comment
  CAS-BOT-BC111655  Schoenoplectus mucronatus M. K. Bellue 1947-6-1 s.n. Butte 2 miles south of Palermo. 35 Comment
  SEINET10467323  Scirpus carinatus Mary Susan Taylor 1981-5-6 Taylor 3622 Butte T21N R7E sw sec 30, Forbestown quad. W side of rd leading to Jackson Ranch, ca. 5 air mi N of Feather Falls. Yellow Pine Forest; 3700 ft. 1128 Comment
  NY380581  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  SEINET7546616  Scirpus diffusus E. B. Copeland 1929-1 343 Butte Jonesville 472 Comment
  CHSC29300  Scribneria bolanderi J. D. Prouty 1980-4-25 80 .81 Butte N of Serene Lane ca. 3 mi. s of Oroville. 82 Comment
  CHSC38147  Scribneria bolanderi J. D. Jokerst 1983-5-12 1758 Butte North Table Mountain. Comment
  CHSC1900  Scrophularia californica subsp. floribunda L. Oliver; D. Sloan 1935-4-20 Butte Feather River Canyon. Comment
  CHSC70806  Scutellaria californica H. Durio; L. Gehrung 1995-7-24 Butte Ca 1.5 air mi S of Hungry Hunt Peak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off off USFS Rd 22N84. 914 Comment
  CHSC78151  Scutellaria californica Lowell Ahart 2000-5-31 8412 Butte On a steep grassy tree covered slope, east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 304 Comment
  CHSC42834  Scutellaria siphocampyloides L. P. Janeway 1987-5-20 2069 Butte Turnout and overgrown seep area on east side of hwy 70 just S of the 'rockhouse' and 0.5 mi S of Jarbo Gap. 670 Comment
  JEPS120940  Scutellaria siphocampyloides Lowell Ahart 2013-5-27 18708 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 air miles SW of Forbestown. Comment
  CHSC796  Scutellaria tuberosa M. Davidson 1929-3-22 Butte Near Paradise. 457 Comment
  SEINET10593738  Secale cereale Isle 1969-5-20 ISLE 487 Butte N. Of the Lindo channel at the edge of the S. side of Manzanita Ave. just across (S. of ) the Manzanita Ave.-Lakeview Way intersection, chico, california. Comment
  CHSC90599  Sedella pumila Ramona Hurst 1984-4-22 9 Butte Found on s side of Humboldt Ave. ca. 6 yds s of rd, 0.5 mi e of intersection with Bruce Rd. 64 Comment
  CHSC90602  Sedella pumila Andrew D. Lane 1984-4-19 4 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  UCD101997  Sedella pumila E. H. Stanford 1940-4-14 s.n. Butte Table Mountain, near Cherokee. Comment
  HSC92528  Sedella pumila Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 30 Butte On N Table Mtn., S of Paradise on Cherokee Rd., S end of Table Mtn. proper 381 Comment
  RSA126002  Sedella pumila E. K. Balls 1957-5-23 22530 Butte 3.8 miles NE of Pentz on road from Paradise. 457 Comment
  CAS-BOT-BC61496  Sedum albomarginatum M. S. Taylor 1982-6-21 4489 Butte On north side of Hwy 70 along Pulga Rd. near Pulga Bridge over Feather River. 20. miles NE of Oroville. 487 Comment
  CHSC29781  Sedum spathulifolium M. S. Taylor 1980-5-27 2689 Butte Big Bald Rock, granite dome, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC28648  Selaginella hansenii M. S. Taylor 1979-3-20 1959 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  SEINET10470986  Selaginella hansenii A. Arthur Heller 1913-4-6 Heller 10715 Butte Hills near Big Chico Creek, east of Chico. Comment
  SEINET11716021  Selaginella hansenii P. L. Venable 1978-1 12 Butte 6 mi N of Oroville, 1 mi W of Cherokee Road 305 Comment
  RSA726781  Selaginella wallacei Lowell A. Ahart 2007-2-24 13584 Butte Peter Ahart Ranch, about 3.4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 53 Comment
  CAS-BOT-BC5711  Senecio lewisrosei Lewis Samuel Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi S of Pulga. 609 Comment
  NY233355  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  NY233356  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CHSC41316  Senecio triangularis S. C. Morey 1983-7-23 597 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC61298  Senecio triangularis Lowell Ahart 1993-8-8 7148 Butte On the bottom of a stream, about 1/2 mile north-west of Lewis Flat, about 3/4 mile north-west of Sly Creek Dam. 1097 Comment
  CHSC94021  Senecio triangularis R. D. Fischer 2005-9-5 667 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  SD5891  Senecio triangularis E. B. Copeland 1931-7-4 Butte Jonesville 1550 Comment
  CDA34164  Senecio vulgaris L. Ahart 2009-4-17 15539 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. Comment
  CDA7658  Senecio vulgaris A. C. Browne 1951-3-28 Butte Bidwell Bar. 0 Comment
  JEPS98502  Sesbania punicea Lowell Ahart 2000-8-23 8660 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CAS-BOT-BC240124  Setaria pumila Lowell Ahart; Margit Epperson 1982-8-22 3749 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch ca. 1 mi. N and 3 mi. E of Honcut 50 Comment
  RSA772427  Setaria pumila L. Ahart 2010-9-24 17237 Butte Near SW edge of the Golf Course, about 10 yrds south of the footbridge, along trail from the end of Centennial avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  UC1563269  Setaria pumila unknown 1990-10-21 6638 Butte ca. 1/2 mi. w. Gold Flat (ca. 1 mi. n. of Nelson Bar Rd., Lake Oroville); Lake Oroville 213 Comment
  CDA42938  Setaria pumila subsp. pumila L. Ahart 2012-10-2 18493 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
  CHSC94557  Setaria viridis Lowell Ahart 2006-9-11 13309 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
  JEPS117311  Sibbaldia procumbens Lowell Ahart 2010-9-28 17254 Butte About 20 yards west of Big Kimshew Creek, meadow, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  SEINET10483281  Sibbaldia procumbens Mary Susan Taylor 1979-7-21 Taylor 2161 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  JEPS100686  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  UC1755047  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC45943  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Growing on a bare hill, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 miles south of Paradise. 548 Comment
  CHSC4685  Sidalcea hartwegii R. Carter 1966-4-30 388 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt.: growing 100 yds W of house on hillside. 243 Comment
  CHSC116567  Sidalcea hirsuta B. Castro; Robin Carter 2016-4-14 2129 Butte Sacramento Valley. CA 2 air mi E of Hwy 99, 1.3 mi S of Hwy 162E and 1.1 mi SSW of the Oroville Airpor, off N edge of SE protion of the Thermalito Afterbay, near S end of old Wilbur Road. 42 Comment
  CHSC90976  Sidalcea hirsuta Lowell Ahart 2005-5-11 11792 Butte In deeper 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
  CHSC34948  Sidalcea oregana subsp. spicata R. A. Schlising 1980-7-11 3886 Butte NE part of County. Elks' Retreat site. 1365 Comment
  POM84693  Sidalcea robusta C. C. Bruce 1898-05 s.n. Butte Little Chico Comment
  UC138306  Sidalcea robusta Mrs. R. M. Austin Apr 1896 822 Butte Little Chico Canyon Comment
  SEINET5060650  Sidalcea robusta Unknown 1915-5-17 11879 Butte Uplands along Chico creek 5 miles E of Chico Comment
  CHSC54299  Silene antirrhina Vernon H. Oswald; Lowell Ahart 1991-6-5 4647 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. 701 Comment
  UC1562425  Silene antirrhina Lowell Ahart 1990-5-25 6478 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  SEINET10537580  Silene douglasii Mary Susan Taylor 1979-7-21 Taylor 2146 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  CAS-BOT-BC387070  Silene gallica Lowell Ahart 1980-5-4 2161 Butte Thermalito 65 Comment
  CAS-BOT-BC389010  Silene laciniata subsp. californica A. A. Heller 1915-5-2 11863 Butte Hills 12 miles northeast of Chico near Rock Creek Comment
  CHSC24877  Silene laciniata subsp. californica T. L. Reynolds 1976-4-23 57 Butte .6 mi ne of Covered Bridge, 7.5 mi ese of Chico. 152 Comment
  CHSC78071  Silene laciniata subsp. californica Caleb E. Casey 1999-5-11 Butte Green gate road, along Hwy. 32. Along road embankment. 426 Comment
  UC203626  Silene lemmonii A. A. Heller 1914-6-22 11488 Butte edge of forest about Chico Meadows Comment
  CHSC101977  Silybum marianum J. Boze 1982-5-8 439 Butte Along Eaton Road, Chico, about 1 mile from Hwy 99. Comment
  CHSC8161  Silybum marianum Dave Isle 1969-5-20 490 Butte Just E. of Chico Municipal Airport on E. side of Cohasset Rd. 59 Comment
  CHSC42698  Sisymbrium altissimum Lowell Ahart 1987-5-6 5513 Butte Gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 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
  CHSC10688  Sisymbrium officinale Lowell Ahart 1962-4-26 Butte Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC135398  Sisyrinchium John Thomas Howell 1962-6-15 37518 Butte Magalia - Sierra Nevada 731 Comment
  CHSC42105  Solanum americanum Lowell Ahart 1986-11-9 5440 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  CHSC42970  Solanum americanum Lowell Ahart 1987-7-8 5790 Butte Along Walker Plains Road, about 1/2 mile east of Highway 70, near Pulga. 457 Comment
  CHSC1943  Solanum parishii M. Roberson 1956-5-21 Butte Near Paradise, along Skyway. 426 Comment
  NY821111  Solanum parishii A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock creek Comment
  NY821124  Solanum parishii H. M. Edwards 06 1917 s.n. Butte De Sabla Comment
  CAS-BOT-BC156833  Solanum umbelliferum A. A. Heller 1915-4-12 11814 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  UC104231  Solanum umbelliferum Mrs. R. M. Austin May 1896 140 Butte Little Chico Creek Comment
  UC1125062  Solanum umbelliferum C. G. Albertus 1933-6-26 32 Butte 1/2 mi s of Nelson's Bar 365 Comment
  CHSC25459  Solidago velutina subsp. californica Hayes; Warner 1977-9-11 98 Butte At the intersection of Schott Rd. and Highway 32 above Forest Ranch, ca. 20 mi e of Chico. 640 Comment
  UCD136187  Sonchus oleraceus E. M. Johnston 1915-1 140 J Butte Biggs. Comment
  CHSC36090  Sorbus scopulina R. A. Schlising; F. J. Fuller, R. Banchero 1982-6-30 4311 Butte NE part of county, E of Inskip and SE of Jones Meadow. At side of stream. 1767 Comment
  JEPS103601  Spergula arvensis subsp. arvensis Lowell Ahart 2002-4-24 9527 Butte 7 air mi S of Oroville (E side of Lone Tree Road, 1 1/8 mi N of Cox Lane, 3 air mi SW of Palermo) 35 Comment
  JEPS110440  Spergula arvensis subsp. arvensis Lowell Ahart 2006-4-23 12533 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
  CHSC38304  Spergularia bocconi Vernon Oswald 1983-5-2 414 Butte Upper Bidwell Park, Chico, in Parking Area A at the w end of Upper Park Rd. 83 Comment
  CAS-BOT-BC390130  Spergularia bocconi Lowell Ahart 1981-5-16 2799 Butte Sutter Buttes Region. Along edge of dirt roads on the Gray Lodge Waterfowl Management Area, 11 miles southwest of Gridley 35 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
  CAS-BOT-BC149611  Spiraea douglasii Lowell Ahart 1986-8-15 5383 Butte North of the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles north-east of Stirling City 1615 Comment
  JEPS105909  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
  SEINET264180  Spiraea douglasii R. J. Becraft 1929-7-21 Butte Philbrook Creek 1829 Comment
  CAS-BOT-BC149710  Spiraea splendens E. B. Copeland 1931-6-19 649 Butte Jonesville 2100 Comment
  CHSC39530  Spiranthes porrifolia Lowell Ahart 1983-6-12 4045 Butte About 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CHSC44075  Spiranthes porrifolia L. P. Janeway 1987-6-5 2130 Butte Along the OroQuincy Hwy just south of bridge across Canyon Cr arm of Lake Oroville. 289 Comment
  CHSC99477  Spiranthes porrifolia Lowell Ahart 2008-6-13 14825 Butte Small meadow, bottom of an old gold mined area, about 350 yards southwest of the cemetery, about 50 yards north of Oregon gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  JEPS115977  Spirodela punctata Lowell Ahart 2009-11-19 16557 Butte About 40 yards southwest of table, about 100 yards south of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico 242 Comment
  CHSC42985  Stachys ajugoides var. rigida L. P. Janeway 1987-7-4 2407 Butte Along West Branch Feather R at bridge 1.8 mi from Inskip. 1341 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
  CHSC48500  Stachys pycnantha Vernon H. Oswald 1986-7-7 2185 Butte Millsqap Bar Rd. 3.6 mi e of Bald Rock Rd. near Brush Creek. 914 Comment
  CHSC52209  Stachys stricta L. P. Janeway 1988-5-30 2718 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 3/4 mi NE of the power lines. 152 Comment
  JEPS87171  Stellaria crispa Lowell Ahart 1992-6-26 6782 Butte about 0.5 mi nw Merrimac (on the e side of Rogers Cow Camp) 1219 Comment
  CHSC26847  Stellaria longifolia M. S. Taylor; M. Hayes 1978-6-24 1637 Butte On Ernies Island in Butte Creek at its jct with Old Humboldt Rd, ca. 1/2 mi w of Butte Meadows. 1371 Comment
  RSA0041906  Stellaria longipes subsp. longipes H. F. Copeland 1927-9-3 s.n. Butte Jonesville. Comment
  CHSC12176  Stellaria media Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC39209  Stellaria nitens M. S. Taylor; K. Tarp 1983-3-12 5241 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  JEPS124176  Stellaria nitens Lowell Ahart 2015-3-14 19952 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC395110  Stellaria nitens A. A. Heller; H. E. Brown 1902-5-12 5527 Butte Grade between Clear Creek and Paradise Comment
  SEINET10603897  Stipa lettermanii K. Bridwell 1978-2-28 Bridwell 48 Butte Along Oakway Rd., 5 mi. ENE of Magalia, E of Feather River. Foothill Woodland. 762 Comment
  CHSC51106  Streptanthus diversifolius Ginger S. Gough 1989-4-8 19 Butte Ca. 91 m e of Coal Canyon Falls, n Table Mt., ca. 10 km ne of Oroville. 244 Comment
  CHSC106599  Streptanthus longisiliquus Matt Simenc; Sarah Starkey, Tim Hanson 2010-7-8 Butte Northern High Sierra Nevada. Along a 2008 wildfire-supression dozer line just southwest of (above) Rim Road (Ponderosa Way) 1.0 road miles southeast of Concow Road, northern end of Rocky Ridge. 993 Comment
  CHSC36690  Streptanthus tortuosus R. E. Preston 1981-6-22 99 Butte Ca. 7 mi ne of the town of Feather Falls. 1280 Comment
  CHSC71168  Streptanthus tortuosus var. suffrutescens Lowell Ahart 1998-6-3 7968 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
  CHSC62098  Streptanthus tortuosus var. tortuosus L. P. Janeway 1993-6-23 4397 Butte Plumas National Forest. Upper end of Galen Ridge, 250 ft northwest of Bald Rock Road 0.7 mi southwest of Oroville-Quincy Hwy. 1036 Comment
  CHSC52375  Styrax officinalis var. redivivus L. P. Janeway 1989-5-17 3255 Butte Along rd to Forbestown Diversion Dam 2.5 mi from Forbestown Rd. Single small shrub at top of cutbank. 845 Comment
  UCSB57876  Suaeda calceoliformis Oswald, Vernon 1989-9-6 Butte West Liberty Rd.; along the N boundary of Gray Lodge Wildlife Area; 0.8 mi. W of Pennington Rd.; T17N R1E nw/S12 19 Comment
  CHSC23534  Symphoricarpos albus var. laevigatus M. S. Taylor 1976-3-9 1020 Butte Around Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC43239  Symphyotrichum chilense Lowell Ahart 1987-9-24 5896 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC97760  Symphyotrichum chilense Lowell Ahart 2007-10-30 14507 Butte Both sides of the water ditch, north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  CHSC110351  Symphyotrichum subulatum var. parviflorum B. Castro; Margie Graham 2006-9-7 1610 Butte Sacramento Valley. 2 mi W of Hwy 99, 3 mi ESE of Richvale and ca 600 ft S of Richvale Hwy in Cherokee Canal.. 32 Comment
  CHSC30398  Symphyotrichum subulatum var. parviflorum Diane H. Ikeda 1979-9-23 161 Butte SW of Chico, just E of Ord Ferry and Sacramento River. 30 Comment
  CHSC37076  Symphyotrichum subulatum var. parviflorum Lowell Ahart 1982-9-9 3767 Butte Ca 100 m N of check-in station, Graylodge Wildlife Refuge, ca 12 mi SW of Gridley. 35 Comment
  CAS-BOT-BC376888  Taraxacum officinale Lowell Ahart 1979-4-11 s.n. Butte Peter Ahart Ranch. Honcut 50 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
  CHSC60949  Tauschia kelloggii Lowell Ahart 1993-6-16 6972 Butte South-west of the intersection of Black bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  SEINET10483064  Tellima grandiflora Mary Susan Taylor 1981-4-28 Taylor 3569 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
  SEINET5334384  Tetrapteron graciliflorum K. Conger 1908-1 s.n. Butte Brush Creek Comment
  JEPS104143  Thelypteris nevadensis Lowell Ahart 2003-8-26 10545 Butte On the w side of the dirt road, 1/4 mi n of where Pinkard Creek flows into the Lost Creek Reservoir, ca 1/2 mi n of the Lost Creek Reservoir Dam, 1 mi (air) nw of the Sly Creek Reservoir Dam. 996 Comment
  CHSC40535  Thlaspi arvense J. D. Jokerst; L. Ahart, M. S. Taylor 1984-4-6 1970 Butte Cherokee area east of Table Mnt., west of Louise Rd., north of Red Tape Lane, Campbell Flat area. Comment
  CHSC90584  Thysanocarpus curvipes Sara R. Goldman 1988-3-15 6 Butte Vic. Salmon Hole, ca. 5 mi e of Chico Municipal Golf Course. 121 Comment
  POM95119  Thysanocarpus curvipes var. curvipes C. C. Bruce 1897-04 1946 Butte [No locality information provided] Comment
  CHSC42225  Thysanocarpus radians Curtis Williges 1986-4-1 6 Butte Ca. 7 mi n of Oroville, w side of Cherokee-Table Mtn. Rd. 411 Comment
  CHSC568  Thysanocarpus radians P. Delaplane 1965-4-6 47 Butte Ca. 3/4 mi. above turnoff to Richardson Springs Rd. on Cohasset Rd. 243 Comment
  CDA33382  Tilia americana L. Ahart, W. Dempsey, J Guardino, S. Mason, S. Green 2010-5-28 16747 Butte Chico. About 100 yards west of the Cedar Grove Parking Area in Lower Bidwell Park. Comment
  UCD128153  Torilis arvensis Joseph M. DiTomaso 1976-5-23 470 Butte Lake Oroville, peninsula at east end of lake. 274 Comment
  SEINET10872332  Torreya californica Mary Susan Taylor 1975-2-23 Taylor 389 Butte Ca. 3 mi E of Hwy 32, along a dirt road, ca. 5 mi N of Forest Ranch. Associates: Ceanothus prostratus, Arctostaphylos, Smilax californica, Pteridium aquilinum. Yellow Pine Forest. 671 Comment
  CAS-BOT-BC172926  Toxicodendron diversilobum John Thomas Howell 1962-6-15 37445 Butte Magalia 731 Comment