Search Results — 2000 specimen records retrieved (1596 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/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC27230  Abelia chinensis P. Moyer 1971-9-26 8 Butte Front of library to E side. 60 Comment
  CHSC84132  Acacia dealbata Lowell Ahart 2003-4-30 10118 Butte On the west side of an irrigation ditch, on the east side of Upper Palermo Road, about 2 miles (air) northeast of Palermo. 67 Comment
  CAS-BOT-BC330577  Acer circinatum A. A. Heller 1919-5-17 13159 Butte Banks of the Feather river near Stirling Comment
  CHSC81447  Acer circinatum D. Tellefson 2000-4-18 Butte Paradise Lake, north of Paradise. 700 Comment
  JEPS120575  Acer circinatum Tim Hanson 2013-9-24 11 Butte Northern High Sierra Nevada Foothills. On the north side of Camp Creek just west of the Dixie Creek bridge and 1.5 air km northwest of the Camp Creek Powerhouse. Comment
  CHSC43580  Acer glabrum var. torreyi Vernon Oswald 1983-7-6 826 Butte Beside Humboldt Rd. 3.4 mi NE of Butte Meadows. Growing near Butte Creek in yellow pine forest. 1432 Comment
  CHSC23643  Acer macrophyllum M. S. Taylor 1976-4-4 1058 Butte on n side of Ponderosa Way, ca. 3 mi e of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  CHSC30934  Acer macrophyllum Leslie Steidl 1980-4-1 10 Butte .8 mi nnw of Lumpkin Rd on Craig Access Rd, on w side of road, 18 mi e of Oroville. 353 Comment
  CHSC28676  Achillea millefolium M. S. Taylor 1978-7-19 1750 Butte Cherry Hill Campground, on s side of Old Humboldt Rd, ca. 2 mi sw of Jonesville. 1524 Comment
  CHSC36957  Achnatherum nelsonii subsp. dorei M. S. Taylor 1982-5-2 4395 Butte Pulga serpentine area on n side of Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC74035  Achnatherum nelsonii subsp. dorei B. Castro; Linnea Hanson 1996-5-24 665 Butte Ca 4 air mi E of North Fork Feather River, ca 0.5 mi S of Coyote Gap, on W side of sharp curve in USFS Rd 23N00. 1216 Comment
  CHSC31213  Achnatherum occidentale subsp. californicum M. S. Taylor; J. D. Jokerst 1979-7-21 2164 Butte Humboldt Peak, at Humboldt Summit. 2154 Comment
  UC1499971  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte 1 1/2 mi se Stirling City 1100 Comment
  CAS-BOT-BC29947  Achyrachaena mollis H. E. Brown 1897-4-15 s.n. Butte near Clear Creek Comment
  CHSC111347  Achyrachaena mollis Lowell Ahart 2012-5-2 17951 Butte On damp dark clay soil, 20 yards south of the fence, west of the Government Pole Line, Upper Bidwell Park, about 1 mile east of Chico. 85 Comment
  CHSC251  Achyrachaena mollis B. Richardson 1929-4-21 Butte Fields around Chico. 60 Comment
  CHSC88869  Achyrachaena mollis Christine Hantelman 2000-4-20 77 Butte On south side of fence about 1.25 miles east on Wookey Road. 112 Comment
  UCD150367  Achyrachaena mollis Harry A. George 1967-4-24 s.n. Butte Shippe Rd. Comment
  SEINET11842154  Achyrachaena mollis K. R. Fechko 1982-1 19 Butte ca 2.5 mi S of Tehama Co. line, E side of Meridian Rd. ca 1.5 mi N of junction with Hwy 99;.. 91 Comment
  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
  CHSC29797  Acmispon americanus var. americanus M. S. Taylor; J. D. Jokerst, R. Schlising 1980-6-14 2873 Butte Little Bald Rock, on granite dome, ca. 4 mi e of Lake Madrone. 1016 Comment
  CHSC6592  Acmispon americanus var. americanus G. Estrem 1968-5-2 12 Butte Ca. 5 mi se of Chico on Skyway, ca. 100 yds. s of road in open field. Comment
  CHSC876  Acmispon brachycarpus M. Roberson 1956-4-23 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC90519  Acmispon brachycarpus Mark Bradford 1983-4-19 7 Butte Near Salmon Hole (Bidwell Park) ca. 7 mi. e of Chico, 2 mi. e of Bidwell Golf Course, 100 yds. n of Big Chico Creek. 76 Comment
  CHSC65556  Acmispon grandiflorus var. macranthus L. P. Janeway 1995-6-20 4803 Butte Watson Ridge; about 1 mi south of Pompys Point. 1188 Comment
  CHSC2833  Acmispon parviflorus David Prall 1965-4-25 30 Butte Growing on road-cut on north side of Humbug Rd. 0.3 mile swest of junction with Honeyrun Rd. (covered bridge). 152 Comment
  CHSC33584  Acmispon parviflorus M. S. Taylor 1981-5-5 3597 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. Comment
  CHSC52673  Aconitum columbianum var. columbianum Kirsten Tarp 1983-8-12 348 Butte NW of Philbrook Reservoir, near streamlet. 1798 Comment
  CAS-BOT-BC412594  Aconogonon alaskanum A. A. Heller 1914-8-8 11672 Butte Jonesville 1524 Comment
  CAS-BOT-BC418802  Aconogonon phytolaccifolium A. A. Heller 1938-7-20 15278 Butte At Chaparral 1524 Comment
  CHSC53694  Actaea rubra Kirsten Tarp 1983-8-6 336 Butte Near Butte Meadows, on Bull Hill Rd 0.2 mi from its jct with Humboldt Rd; near creek. 1325 Comment
  SEINET11708078  Adiantum capillus-veneris J. D. Mott 1978-1 10 Butte West Branch Feather River 280 Comment
  CAS-BOT-BC65618  Adiantum jordanii Lowell Ahart 1983-7-29 4236 Butte about 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville 500 Comment
  CHSC27785  Adiantum jordanii Bruce Hamren 1978-4-24 10 Butte West Branch of Feather River. 280 Comment
  CHSC31529  Adiantum jordanii L. Ahart 1978-3-19 1616 Butte Along North Honcut Creek. 3 mi ne of Honcut. 65 Comment
  UC1481811  Adiantum jordanii Mrs. Carlotta C. Hall 1914-7-17 9760 Butte near Chico and Paradise (Honeyrun Grade) Comment
  HSC66338  Adiantum jordanii M. S. Taylor 1980-4-1 2422 Butte S side of Butte Cr. near Covered Bridge 6 mi. E of Chico 122 Comment
  CAS-BOT-BC110725  Aegilops triuncialis Lowell Ahart 1976-5-2 s.n. Butte Peter Ahart Ranch. Honcut. Comment
  CHSC11373  Aesculus californica Lowell Ahart 1970-5-12 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC40341  Aesculus californica Lowell Ahart 1985-6-17 5045 Butte On dry bare dark lava, near the dirt road on Fields Ridge, about 4 miles southeast of Feather Falls. 762 Comment
  CHSC50804  Agrimonia gryposepala Vernon Oswald; Lowell Ahart 1990-7-31 4423 Butte Meadow at the headwaters of Concow Creek, ca. 4 mi north of Concow. 1097 Comment
  CAS-BOT-BC447800  Agrimonia gryposepala Strothman 1913-7-1 233 Butte Tilden, Plumas Forest 792 Comment
  SEINET10789630  Agropyron cristatum Mary Susan Taylor 1982-6-24 Taylor 4733 Butte T23N R5E nw/se sec 30. Pulga SW quad. Around large landing site on saddle of ridge se of Flea Mt, n. of Pulga, ca. 5 air mile of Magalia. 1097 Comment
  CHSC100946  Agrostemma githago R. A. Schlising 1991-5-11 4659 Butte About 0.25 miles north of Gravel Pit Road, along Wheelock (=Messilla Valley) Road. 140 Comment
  SEINET10506789  Agrostis Mary Susan Taylor 1978-7-21 Taylor 1810 Butte On S side of Oroville-Quincy Hwy, along creek and in meadow, ca. 14 mi N of Lake Madrone, ca. 24 mi NE of Oroville; Yellow Pine Forest. 1463 Comment
  CHSC55462  Agrostis avenacea L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca 5.1 mi south of Palermo. 38 Comment
  JEPS127630  Agrostis capillaris B. Castro with Melinda Carlson 2007-10-25 1681 Butte Confluence of Big Chico Creek and Sacramento River. W of River Road and N of the creek within surrounding disturbed riparian forest. Comment
  JEPS107757  Agrostis elliottiana Lowell Ahart 2005-5-11 11800 Butte On the bottom of a small vernal pool, south part of North Table Mountain, about 300 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville 354 Comment
  CAS-BOT-BC127334  Agrostis exarata Lowell Ahart 1977-6-16 s.n. Butte Along bands of North Honcut Creek. Peter Ahart Ranch. Honcut. 50 Comment
  CHSC113411  Agrostis exarata Lowell Ahart 2014-7-10 19640 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC34033  Agrostis exarata L. Ahart 1981-7-7 2916 Butte Ca. 1 mi s of the Oroville Forbestown Rd on the Hurleton Swedes Flat Rd. 600 Comment
  CHSC71206  Agrostis exarata Lowell Ahart 1998-6-30 8016 Butte On the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC139718  Agrostis gigantea Lowell Ahart 1981-8-15 3045 Butte Snag Lake (about 3 miles south of Jonesville). 1524 Comment
  CAS-BOT-BC139079  Agrostis pallens Lowell Ahart 1987-7-10 5818 Butte Near Forbestown Road, east of the intersection of Forbestown Road and Black Bart Road, about 1 mile west of Robinson Mill Road, about 6 miles southwest of Forbestown. 670 Comment
  CHSC39658  Agrostis pallens Lowell Ahart 1983-6-21 4091 Butte Found along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 31. 450 Comment
  SACT000147  Agrostis rossiae Herbert Copeland 1934-7-9 Butte Comment
  CHSC45103  Agrostis stolonifera Lowell Ahart 1988-9-4 6178 Butte Near Big Kimshew Creek, about 1 air miles north-east of Jones Meadow. 1920 Comment
  CHSC39555  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near the dirt road at the Forbestown Res., about 5 miles north-east of Forbestown. 450 Comment
  SACT000179  Aira caespitosa Herbert Copeland 1930-7-25 Butte Tall clumps, in meadow below cabin Comment
  CAS-BOT-BC138423  Aira caryophyllea Lowell Ahart 1980-5-17 2270 Butte 0.5 mile southeast of Hurleton. 600 Comment
  SEINET10869149  Aira elegans Mary Susan Taylor 1980-3-1 Taylor 2351 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  JEPS114922  Albizia julibrissin Lowell 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
  CHSC97373  Alisma triviale Paul Maslin 2006-6-15 39 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). Man made pond near reserve headquarters. UTM: 10611097E 4411325N. 487 Comment
  CHSC20678  Allium amplectens M. S. Taylor 1975-6-30 822 Butte Ca. 1/4 mi w of Cohasset Hwy, ca. 400 yds n of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC36907  Allium amplectens R. A. Schlising 1980-7-25 3920 Butte N part of county near Lomo, 1.9 m ne of jct Hwy. 32 with Humboldt Road. Carpenter Ridge. Comment
  CHSC90579  Allium amplectens Jose Romero 1983-4-20 1 Butte Site on the Oroville Wildlife Area. Junction of Larkin and Timothy Roads, 4 mi southwest of Oroville. 45 Comment
  CAS-BOT-BC460735  Allium amplectens Lowell Ahart 1980-5-25 1330 Butte Along Hurleton-Swedes Flat Road. Comment
  CAS-BOT-BC460743  Allium amplectens Robert A. Schlising; Marc Hayes 1978-5-22 3266 Butte N of Chico along Cohasset Hwy, 4.3 mi N of Mud Creek. Comment
  CDA39428  Allium amplectens L. L. Heinricks 1974-5-2 s.n. Butte On both sides of Wilbur Road. 0 Comment
  POM110214  Allium amplectens C. C. Bruce 1897-05 1899 Butte [No locality information provided] Comment
  UC142746  Allium amplectens Mrs. R. M. Austin May 1896 736 Butte Comment
  CHSC3868  Allium cratericola Gary Dutton 1966-3-28 152 Butte Found at Table Top. Comment
  UC1299310  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte 6.2 mi n Oroville-Chico Highway; Table Mountain Comment
  UC725435  Allium cratericola A. A. Heller 1938-4-3 15012 Butte summit of Table Mountain Table Mountain 304 Comment
  CAS-BOT-BC135815  Allium jepsonii Clarence R. Quick 1964-7-9 64 -65 Butte North of Jarbo Gap - Sierra Nevada Comment
  CHSC62602  Allium jepsonii B. Castro 1993-8-5 492 Butte On saddle between Big Bar Mtn and Hungry Hunt Peak, on WSW-facing slope below N edge of sharp curve in USFS Rd 23N28. 1133 Comment
  CHSC62604  Allium jepsonii B. Castro 1993-8-3 491 Butte Ca 1 mi S of Big Bar Mtn, 0.5 mi SE of Hungry Hunt Peak, on USFS Rd 22N83 ca 0.1 mi W of its jcn with Rd 23N28. 1127 Comment
  CAS-BOT-BC472973  Allium membranaceum Alice Eastwood 1921-5-22 10566 Butte Los Vergils Comment
  SEINET12048269  Allium membranaceum M. Ownbey, Ownbey, G. B. 1946-1 2945 Butte just E of Brush Creek Ranger Station Comment
  CHSC49477  Allium obtusum var. obtusum Vernon Oswald 1985-4-29 1732 Butte Big Bald Rock. 990 Comment
  CHSC29981  Allium peninsulare Lowell Ahart 1980-5-25 2317 Butte Along Swedes Flat Road, ca 1 mi E of Bangor- -Oroville Highway, near Bangor. 320 Comment
  RSA769675  Allium peninsulare var. peninsulare Lowell Ahart 2009-4-22 15596 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
  CAS-BOT-BC132115  Allium sanbornii var. sanbornii Lowell Ahart 1980-7-29 2501 Butte Along the edge of Forbestown Road Comment
  JEPS87858  Allium sanbornii var. sanbornii Lowell Ahart 1994-7-28 7526 Butte ca. 1/2 mi. s.e. Little Bald Rock (s. side of Bean Creek Rd.) 914 Comment
  POM193389  Allium validum E. B. Copeland 1930-7-21 407 Butte Jonesville. 1500 Comment
  SEINET10969173  Allophyllum divaricatum Lowell Ahart 1984-6-8 Ahart 4673 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC5944  Alnus rhombifolia M. MacArthur 1968-6-17 174 Butte Location: Hanging over SW edge of Big Chico Creek Ne of Dining Hall, Chico State College Campus. 60 Comment
  CDA5624  Alopecurus carolinianus L. Ahart 2005-4-14 11716 Butte About 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 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
  CHSC47601  Alopecurus carolinianus Lowell Ahart 1974-4-28 442 Butte Peter Ahart Ranch, about 2 miles north and 1/2 east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC92504  Alopecurus carolinianus Lowell Ahart 2005-12-11 12513 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  CAS-BOT-BC137940  Alopecurus saccatus Lowell Ahart 1980-5-10 2236 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA31388  Alopecurus saccatus L. Ahart 2003-5-28 10235 Butte On the bottom of Hendricks ditch, about 1 3/4 miles west of the iron gate and fence, west of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville Comment
  CHSC8195  Alopecurus saccatus J. G. Moore 1969-4-18 27 Butte Table Mtn. 50 yds. w of Cherokee Rd., 2 mi. s of Oregon City turnoff. 381 Comment
  JEPS117218  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC116004  Amaranthus albus Lowell Ahart 2015-10-9 20540 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
  SEINET3125082 Image available Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UCSB64011  Amaranthus albus Ahart, Lowell 1982-7-10 Butte About 1/4 miles south-east of the Gray Lodge Headquarters, about 12 miles south-west of Gridley, Butte County, California 30 Comment
  UCD97225  Amaranthus hybridus T. Gantenbein 1999-8-11 PDR11 98787 Butte Richvale. Comment
  RSA29939  Amaranthus retroflexus I. L. Wiggins 1928-9-9 3345 Butte Sandy Gulch Creek, 3 miles west of Chico Comment
  CHSC76411  Ambrosia artemisiifolia Lowell Ahart 1999-10-28 8317 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
  CAS-BOT-BC142952  Amelanchier utahensis A. A. Heller 1915-6-11 11963 Butte Chico Meadows in the Sierra Nevada 1219 Comment
  CHSC47438  Ammannia coccinea Lowell Ahart 1973-8-13 266 Butte Growing in shallow water or on wet edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC83017  Ammannia coccinea Lowell Ahart 2002-10-17 10002 Butte Bottom of a wash, between 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
  CDA36699  Ammannia coccinea Margaret Bellue 1947-8-23 Butte Afton Road near Biggs. 0 Comment
  JEPS119611  Amsinckia eastwoodiae Lowell Ahart 2012-4-9 17821 Butte Along South Rim Trail, about 100 yards north of the homes, south part of Upper Bidwell Park, about 1/4 mile east of the power lines, about 1 1/4 miles (air) northeast of Chico. Comment
  CHSC137  Amsinckia intermedia E. Lusk 1949-5-22 Butte 3 mi. N.W. of Chico. 60 Comment
  JEPS107370  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
  SEINET10497093  Amsinckia intermedia Mary Susan Taylor, K. Tharp 1983-3-11 Taylor 5227 Butte T20N R5E sw/se sec 29. Along abandoned part of Hwy 62 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville. Comment
  SEINET10969125  Amsinckia intermedia Mary Susan Taylor, K. Tharp 1983-3-12 Taylor 5240 Butte T22N R2E nw sec 27. Chico quad. Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. Elevation ca. 500 ft. 152 Comment
  CHSC24888  Amsinckia lycopsoides E. E. Jaeger 1976-4-17 10 Butte 10 ft of Hwy 32, 9.6 mi ne of Chico. 121 Comment
  CHSC37420  Amsinckia menziesii R. A. Schlising; J. D. Jokerst, R. Banchero 1981-3-22 4004 Butte NW of Oroville and n of Thermalito Forebay, in the Campbell Hills. 106 Comment
  CHSC1389  Anagallis arvensis J. Baynes 1929-4-26 Butte U. S. Plant Introduction Garden. 57 Comment
  CHSC33634  Anemone occidentalis R. E. Preston; R. A. Schlising, R. Banchero, D. Burk 1981-7-21 113 Butte Snow Mtn, ca. 7.2 km se of Jonesville. 2050 Comment
  JEPS115306  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS98474  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2000-5-31 8423 Butte 3 mi SE of Paradise (200 yds E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  RSA371507  Antirrhinum vexillocalyculatum subsp. intermedium David M. Thompson 1986-6-25 537 Butte E of Old Yankee Hill. 2.0 miles S of Hwy. 70 on Dark Creek Road (the old Hwy. 70 grade before the creation of Lake Oroville). 442 Comment
  CAS-BOT-BC447661  Aphanes arvensis A. A. Heller 1916-4-13 12324 Butte Stilson Canyon east of Chico in the digger pine and blue oak belt Comment
  CHSC45188  Aphanes occidentalis Lowell Ahart 1974-4-7 350 Butte Peter Ahart Ranch, about 12 miles south of Oroville. 45 Comment
  CHSC46398  Aphanes occidentalis Lowell Ahart 1989-5-28 6276 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cemetary, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  CHSC29376  Arabidopsis thaliana R. A. Schlising; R. Banchero 1980-6-2 3622 Butte 10.3 mi n of jct Forest Ranch Road (which is just n of village of Forest Ranch), along Hwy 32. Comment
  CHSC93516  Arbutus menziesii L. P. Janeway; B. Castro, Ana Castro Instone 2006-4-23 8559 Butte Northern Sierra Nevada Foothills. North Table Mountain; near head of Campbell Creek and Beatson Hollow, about 150 m south of Phantom Falls. On steep west-facing slope between the top tablelands and the bottom of the Hollow. 375 Comment
  UC1950038  Arbutus menziesii Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15489 Butte East side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CAS-BOT-BC407720  Arceuthobium abietinum E. B. Copeland 1930-7-28 414 Butte Jonesville 1550 Comment
  CHSC11789  Arceuthobium abietinum E. B. Copeland 1930-7-28 Butte Jonesville, Butte County. 1550 Comment
  CHSC45301  Arceuthobium abietinum Vernon Oswald; Lowell Ahart 1987-7-1 3070 Butte Logging road ca. 2.5 mi (air) s of Humbug Summit and 0.25 mi w of the Butte-Plumas county line, ca. 5.25 mi se of Jonesville. 1999 Comment
  CAS-BOT-BC27257  Arctostaphylos laxiflora Amos Arthur Heller 1940-2-6 15493 Butte Wagstaff Road near the Neal Road, Paradise. Comment
  RSA632991  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27463 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52236  Arctostaphylos manzanita John Thomas Howell 1976-4-2 51561 Butte In Upper Sonoran Life Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  CHSC67925  Arctostaphylos manzanita subsp. manzanita James D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1682 Butte Top of N. Table Mtn. at its NW corner. Comment
  SEINET11989068  Arctostaphylos manzanita subsp. roofii R. Gankin, Powell, R. 1966-1 869 Butte Cohasset Ridge NE of Chico 549 Comment
  RSA31998  Arctostaphylos mewukka A. A. Heller 1942-1-4 16345 Butte 4 miles below Paradise on the Pentz-Magalia Road. Comment
  UC725980  Arctostaphylos mewukka A. A. Heller 1942-1-18 16350 Butte Pentz-Magaia Rd one mi e Bille Road; Paradise Comment
  CAS-BOT-BC38564  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  CAS-BOT-BC48295  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51085 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC32655  Arctostaphylos viscida subsp. viscida M. S. Taylor 1981-3-18 3424 Butte W side of West Branch Feather River, ca. 100 ft S of Ponderosa Way bridge crossing, ca. 1 mi NE of Magalia. Label states: T23N R5W nc 1/3 sec 30. 487 Comment
  CHSC50037  Arctostaphylos viscida subsp. viscida Lowell Ahart 1990-3-9 6412 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. 30 Comment
  CHSC34820  Arenaria macrophylla M. S. Taylor 1981-5-12 3690 Butte Jct of French Creek and 22N93, ca. 3.5 air mi s of Coyote Gap, ca. 17 air mi ne of Oroville. 853 Comment
  CHSC84407  Aristida dichotoma Lowell Ahart 2003-7-30 10461 Butte On the north side of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock, about 2 1/2 miles (air) southeast of Brush Creek. 1000 Comment
  UC145952  Aristida oligantha Dr. E. B. Copeland 1903-7-27 3488 Butte Chico; bank of sloughs Comment
  SEINET10512738  Aristida oligantha Mary Susan Taylor 1977-8-16 Taylor 1434 Butte On S side of Pentz Rd, near culvert in natural drainage, ca 1.2 e of jct of Pentz Rd & Hwy 99, ca 15 mi S of Chico. 61 Comment
  CAS-BOT-BC146314  Aristida ternipes var. gentilis Lowell Ahart 1983-8-16 4277 Butte Sierra Nevada. One mile east of Chico, on Highway 32. 100 Comment
  CAS-BOT-BC400424  Aristolochia californica Lowell Ahart 1980-3-8 2028 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC38262  Aristolochia californica Vernon Oswald 1983-3-4 107 Butte Upper Bidwell Park. Brush beside Upper Park Rd. at the power lines. 97 Comment
  POM20567  Aristolochia californica Ione Poe 1923-10-2 s.n. Butte Molinos River, near Chico. Comment
  UC650550  Aristolochia californica Mrs. C. C. Bruce March 1897 1794 Butte Little Chico Comment
  SEINET10872091  Artemisia douglasiana Mary Susan Taylor 1975-10-29 Taylor 976 Butte Butte Creek, ca. 2-500 yds S of Humbug Road, ca. 2 mi E of junction of the Skyway and Humbug Road; with Platanus racemosa, Rhus trilobata. Comment
  JEPS108902  Asarum hartwegii Lowell Ahart 2006-7-11 12941 Butte About 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CAS-BOT-BC400631  Asarum hartwegii Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC400640  Asarum hartwegii Clarence R. Quick 1962-6-16 62 -36 Butte SW of road junction of Big Bend-Red Mountain road Comment
  CHSC3204  Asclepias cordifolia Gerry Carrauthers 1966-4-23 122 Butte Ca. 9.5 mi. E. of city of Chico on Highway 32. Comment
  SEINET10961630  Asclepias cordifolia R. M. Austin Austin 868 Butte Iron Canyon Comment
  CHSC38264  Asclepias fascicularis Vernon Oswald 1983-6-20 719 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 128 Comment
  SEINET10496162  Asclepias fascicularis Lowell Ahart 1985-6-30 Ahart 5074 Butte Abut 1 mile west of intersection of Forbestown Road with Robinson Mill Road, N of Oroville. Comment
  CHSC80584  Asclepias speciosa Lowell Ahart 2001-6-1 8748 Butte South side of Biggs Princeton Road, about 1 mile east of Butte Creek, about 7 1/2 miles west of Biggs. 21 Comment
  SEINET3166412  Aspidotis californica P. J. Alexander 2009-5-27 1050 Butte Western foothills of the northern Sierra Nevada, east side of the Feather Falls trail loop, 0.9 (linear) miles SE of the waterfall, 1.7 miles NW of the top of Swain Hill, 17.9 miles ENE of Oroville, Plumas National Forest. 588 Comment
  CAS-BOT-BC65912  Aspidotis densa Clarence R. Quick 1964-7-9 64 -53 Butte north of Jarbo Gap Comment
  CHSC23657  Aspidotis densa M. S. Taylor 1976-4-24 1075 Butte On Big Bald Rock, ca. 1/4 mi w of Bald Rock Rd, ca. 3 mi e of Lake Madrone, ca. 13 mi ne of Oroville. 997 Comment
  CHSC30745  Aspidotis densa M. S. Taylor 1980-5-27 2662 Butte On Big Bald Rock, ca. 3 mi e of Lake Madrone. 997 Comment
  CHSC32688  Aspidotis densa M. S. Taylor 1981-3-18 3423 Butte W side of West Branch Feather River, ca. 100 ft s of Ponderosa Way bridge crossing, ca 1 mi ne of Magalia. 487 Comment
  CAS-BOT-BC178457  Astragalus gambelianus Ira L. Wiggins 1925-3-22 1463 Butte Chico Creek Canyon about 5 miles above Chico Comment
  CHSC108827  Astragalus gambelianus Lowell Ahart 2012-4-17 17880 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
  CHSC67362  Astragalus gambelianus James D. Jokerst; R. A. Schlising 1985-4-8 2215 Butte Serpentine Point W and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. In vicinity of highway right of way fence. 548 Comment
  SEINET7042706  Astragalus gambelianus A. G. Vestal 1963-5-9 s.n. Butte Route 99E 11.8 miles north of Chico. Nelson quadrangle UTM Zone 10, 605211mE, 4382252mN. Comment
  CAS-BOT-BC192801  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Summit of Table Mountain 304 Comment
  CHSC43861  Astragalus pauperculus Vernon Oswald 1988-3-14 3253 Butte Harter's Cherokee Ranch is located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Along the Hwy 99 fence line near the north tip of the ranch. 71 Comment
  RSA0003125  Astragalus tener var. bruceae C. C. Bruce 1898-03 2430 Butte Plains [no specific locality given] Comment
  CHSC30780  Asyneuma prenanthoides M. S. Taylor 1980-9-12 3336 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w of the Hwy on a dirt road. 975 Comment
  CAS-BOT-BC68696  Athyrium filix-femina var. californicum Clarence R. Quick 1952-7-1 52 -122 Butte Sierra Nevada - Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CAS-BOT-BC68697  Athyrium filix-femina var. californicum Javier Penalosa 1962-6-18 2445 Butte N. of Brush Creek on old Oroville-Quinney Road, near confluence of French and Peavine Creeks. 609 Comment
  SEINET10471813  Athyrium filix-femina var. californicum Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4461 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  CHSC100123  Athyrium filix-femina var. cyclosorum L. P. Janeway 2008-8-10 9537 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek, 4.5 road km east-southeast of Hwy 70. Along moist roadside gutter. 823 Comment
  UCR95841  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 733 Butte Jonesville, along creeks. 1600 Comment
  CHSC14015  Athysanus pusillus G. Notch 1974-3-12 66 Butte In fields on Burton's Mesa ca. 3 mi e of Chico on the Skyway to Paradise. 213 Comment
  JEPS87173  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte about 1/6 mi e of the Enterprise Boat Launch Area (about 1/2 mi nw of the Enterprise Bridge across Lake Oroville); Lake Oroville 274 Comment
  CHSC36556  Atriplex argentea var. mohavensis L. Ahart 1982-7-10 3662 Butte In parking area of checking station, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UCD97511  Atriplex lentiformis Lowell Ahart 1981-11-6 3217 Butte Gray Lodge, south-west of Gridley. Comment
  JEPS90593  Atriplex minuscula Vernon H. Oswald 1993-7-29 5735 Butte on w side of a levee road and on s side of Rutherford Rd. just e headquarters complex (ca. 1.75 mi w of Pennington Rd., w of Gridley); Gray Lodge Wildlife Management Area 19 Comment
  CAS-BOT-BC176601  Atriplex serenana var. serenana Lowell Ahart 1981-11-6 3218 Butte Gray Lodge, south-west of Gridley 35 Comment
  CDA23332  Atriplex triangularis L. Ahart 2006-10-8 13431 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. Comment
  CHSC101290  Avena barbata Lowell Ahart 2009-4-17 15552 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  JEPS117938  Avena barbata L. P. Janeway 2008-4-2 9246 Butte East edge of City of Chico Cascade Range Foothills (slope on north side of Humboldt Road 2.9 km northeast of Bruce Road) 167 Comment
  UCD56174  Avena barbata A. A. Heller 1914-3-18 11207 Butte 8 miles north of Oroville. Near the western base of Table Mountain. Comment
  CAS-BOT-BC145884  Avena fatua John Thomas Howell 1962-6-15 37530 Butte Sierra Nevada. Magalia. 731 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
  JEPS127249  Azolla microphylla Lowell Ahart 2016-9-4 21342 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  CHSC93329  Baccharis douglasii Paul Maslin 2005-9-29 628 Butte Plant collected from Big Chico Creek Ecological Reserve which is located off of Hwy. 32, east of Chico, beginning at the upper end of Bidwell Park. Comment
  UCD129404  Baccharis glutinosa L. Ahart 1981-9-27 3215 Butte Palermo. 100 Comment
  JEPS119920  Baccharis pilularis subsp. consanguinea Lowell Ahart 2012-10-20 18487 Butte On the south side of the paved park road and Big Chico Creek, west of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET10474452  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1975-10-3 Taylor 948 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
  CHSC81461  Baccharis salicifolia Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  CHSC112603  Bacopa eisenii Lowell Ahart 2013-9-20 19057 Butte Along a ditch, about 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles southeast of Richvale. 30 Comment
  CHSC55061  Bacopa eisenii Lowell Ahart 1991-9-24 6730 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  CAS-BOT-BC106558  Balsamorhiza deltoidea Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC87774  Balsamorhiza deltoidea Paul Maslin 2004-4-22 27 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10611534E 4411103N. 518 Comment
  UC1594585  Balsamorhiza deltoidea Vernon H. Oswald and Lowell Ahart 1992-3-24 4891 Butte .2 mi n of, (n side Thermalito Diversion Pool, along 1st stream w of spillway) Burma Rd.; Lake Oroville Recreation Area 76 Comment
  CHSC60577  Barbarea orthoceras Vernon H. Oswald; Lowell Ahart 1993-4-21 5294 Butte Along the Skyway ca. 1 mi S of De Sabla. 804 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
  SEINET10907330  Barbarea orthoceras Mary Susan Taylor 1981-5-14 Taylor 3730 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  CHSC43648  Barbarea verna Vernon Oswald 1987-4-22 2340 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. On the edge of the creek. 68 Comment
  CHSC109109  Berberis aquifolium var. dictyota Lowell Ahart 2012-3-3 17769 Butte About 20 yards east of Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8-1/2 miles northeast of Chico. 387 Comment
  CHSC28538  Berberis aquifolium var. dictyota M. S. Taylor; J. D. Jokerst 1979-10-13 2247 Butte On n side of Jordan Hill Rd (Ponderosa Way on some maps) near bridge over creek, ca. 1 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  JEPS122318  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east Oroville. Comment
  RSA0036436  Betula Lowell A. Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18008 Butte West of the horse path, on the north side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  CAS-BOT-BC102082  Bidens frondosa Lowell Ahart 1987-8-30 5863 Butte along the North Fork of the Feather River, near Poe Power House, about 2 miles southeast of Jarbo Gap 271 Comment
  CHSC43272  Bidens frondosa Lowell Ahart 1987-8-30 5863 Butte On sand and gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  HSC103997  Bidens frondosa L. Ahart 2013-11-17 19259 Butte About 5/8 mi. SW of the Enterprise Bridge across Lake Oroville, below the high water line of Lake Oroville, along the sides of McCabe Creek 245 Comment
  POM180850  Bidens frondosa H. F. Copeland 1923-1 862 Butte Nelson Comment
  CHSC100908  Bistorta bistortoides R. A. Schlising; Lawrence Janeway 1988-8-2 4657 Butte North of Lomo and west of Butte Meadows, along Hwy 32 at Soda Springs Campground. Comment
  CHSC285  Blennosperma nanum J. Turner 1930-4-18 Butte Chico near Plant Gardens. 54 Comment
  CAS-BOT-BC100689  Blennosperma nanum var. nanum H. E. Brown 1897-4-15 146 1/2 Butte near Clear Creek 53 Comment
  RSA0084097  Blennosperma nanum var. nanum L. P. Janeway 2005-3-1 8333 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 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
  CHSC474  Boechera breweri subsp. shastaensis V. Holt 1937-3-1 Butte Salmon Hole. 121 Comment
  JEPS122214  Boechera breweri subsp. shastaensis Lowell Ahart 2014-4-20 19388 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  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
  POM253279  Boisduvalia stricta A. A. Heller 1938-5-22 15107 Butte Near the airport north of Chico. 91 Comment
  JEPS88224  Bolboschoenus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7757 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (in the ne corner of corner of Tract 7.2, Sanctuary I); Sacramento River National Wildlife Refuge, Llano Seco Unit 33 Comment
  SEINET3915039  Bolboschoenus glaucus Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3287 Butte Peter Ahart Ranch about 2.5 mi NNE of Honcut between Oroville and Marysville.; 0 30 Comment
  CHSC38790  Brachypodium distachyon Vernon Oswald 1983-5-4 426 Butte Upper Bidwell Park, Chico, 300 ft n of Upper Park Rd. and 2.4 mi e of the power lines. 243 Comment
  SEINET10507663  Brachypodium distachyon Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4062 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  JEPS115834  Brassica napus Lowell Ahart 2009-4-26 15607 Butte On the east side of Highway 99, south of the wash, about 1/2 mile south of the stop light at the intersection, about one mile south of Butte Creek, about 3 miles south of Chico. Scattered south along highway for miles 60 Comment
  CHSC41414  Brassica nigra Lowell Ahart 1986-5-10 5273 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC38059  Brassica oleracea var. gemmifera R. E. Preston 1982-3-25 198 Butte In a garden in Chico. Comment
  CHSC113296  Brassica rapa Lowell Ahart 2014-4-9 19330 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CAS-BOT-BC145531  Briza minor Ira L. Wiggins 1925-3-25 1427 Butte 3.5 miles west of Pence on Pence-Durham Road. Comment
  CAS-BOT-BC482208  Brodiaea californica subsp. californica Peter H. Raven 1953-5-9 5421 Butte Dry fields 7 mi. s.e. of Chico on Oroville Road Comment
  JEPS74710  Brodiaea californica var. californica W. L. Jepson 1932-5-9 16366 Butte e Cana (on Red Bluff-Chico road) 57 Comment
  UC1080382  Brodiaea californica var. californica E. K. Balls 1957-5-23 22531 Butte 1.7 mi nw U. S. Hwy. 99 E. jct. with road from Penta 91 Comment
  UCD77126  Brodiaea coronaria Robert E. Preston 2003-5-11 2130 Butte Ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
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Jun 17 2014
  UCD77203  Brodiaea coronaria Robert E. Preston 2003-5-18 2140 Butte Ca. 2.25 mi N of Cana, along Cana-Pine Creek Rd, ca. 0.4 mi N of Pine Creek 51 Comment
  CHSC36100  Brodiaea minor R. A. Schlising 1980-6-30 3802 Butte 0.1 miles S of junction of Humboldt Road and Skyway at Butte Meadows. Comment
  SEINET194883  Brodiaea minor A. A. Heller 1927-5-3 14364 Butte Ten miles north of Chico Comment
  UC726228  Brodiaea minor A. A. Heller 1941-5-24 16151 Butte Clark Road 2 mi below Paradise Comment
  CAS-BOT-BC484560  Brodiaea minor John Thomas Howell 1955-6-14 30437 Butte Magalia 731 Comment
  UC501524  Brodiaea minor Frank W. Peirson 1926-6-21 6767 Butte Humboldt Road Butte Meadows Comment
  SEINET3921419  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville.; 0 37 Comment
  CHSC35753  Bromus carinatus R. E. Preston 1982-6-2 294 Butte On the bank of Miocene Canal, ca. 1/4 mi s of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 292 Comment
  SEINET10967307  Bromus carinatus M. E. Banning 1969-7-3 Banning 10 Butte Across from Chico Jr. Hi, on S. side of Memorial Way Chico. 61 Comment
  CDA31935  Bromus catharticus L. Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  SEINET11689143  Bromus catharticus J. M. Lund 1980-1 s.n. Butte S side of Nord Ave., 0.3 mi W of 1st St., beside an apt. complex, Chico 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
  HSC65336  Bromus hordeaceus J. P. Smith 1974-4-20 7345 Butte 300 yds. S of junction of Pentz and Clark Rd. 61 Comment
  JEPS110114  Bromus hordeaceus Lowell Ahart 2006-5-10 12621 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
  CHSC96867  Bromus laevipes Lowell Ahart 2007-6-3 13969 Butte On the east side of Jordan Hill Road, about 1/10 mile northwest of the bridge across Concow Creek, about 1 1/2 miles (air) southwest of Concow Reservoir. 436 Comment
  SEINET10520260  Bromus laevipes Lowell Ahart 1982-9-13 Ahart 3806 Butte On damp soil along edges of small wash that flows into Pinkard Creek, ca. 1/8 mi N of Lost Creek Reservoir Dam, ca. 2.2 mi NW of Strawberry Valley. Scattered, not common. Yellow Pine Forest. 1100 Comment
  CAS-BOT-BC162365  Bromus madritensis John Thomas Howell 1967-6-22 42622 Butte Sierra Nevada. Magalia. 701 Comment
  CHSC38799  Bromus madritensis subsp. rubens Vernon Oswald 1983-3-19 199 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. ca. 300 ft w of Parking Area M (1.2 mi e of the power lines). 146 Comment
  CHSC46437  Bromus madritensis subsp. rubens Lowell Ahart 1989-5-23 6262 Butte Along Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north of Bangor. 426 Comment
  CHSC44550  Bromus sterilis Lowell Ahart 1979-5-29 1894 Butte West of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC44173  Bromus suksdorfii V. Oswald; L. Ahart 1988-7-26 3626 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 2042 Comment
  UCR115097  Bromus suksdorfii G. Fred Hrusa, T. D. Wilfred 1996-7-9 13139 Butte Sierra Nevada Mtns., Plumas National Forest. Above Jordan Creek, south of Hwy 162 near Roger's Cow Camp 1250 Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  SEINET3450781  Bromus tectorum Unknown 2003-5-9 10120 Butte Gridley, Gridley, about 3 miles by air southwest, on the south side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  UC726398  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte near Stirling (Feather River); Feather River 975 Comment
  SEINET10901259  Bromus tectorum A. Arthur Heller 1919-5-17 Heller 13163 Butte Banks of the Feather River near Stirling in the yellow pine and oak belt, the common shrubs Ceanothus nevadensis, Amelanchier, Salix, and Ribes. Comment
  CAS-BOT-BC185535  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CHSC50388  Bromus vulgaris Vernon Oswald 1990-6-1 4276 Butte Butte Creek Trail, ca. 2 miles north-northwest of Lake De Sabla. Near the second intermittent streamlet south of the trailhead on Ponderosa Way (Doe Mill Rd). 609 Comment
  UCD60256  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville. 1500 Comment
  CAS-BOT-BC18155  Bulbostylis capillaris Lowell Ahart 1980-7-20 2472 Butte At Big Bald Rock. 1100 Comment
  CAS-BOT-BC185473  Calamagrostis canadensis Lowell Ahart 1987-10-17 5917 Butte Along the East Fork of the Last Chance Creek, about 0.5 mile northwest of Jones Meadow. 1676 Comment
  CHSC79807  Calandrinia ciliata Leanna Brown 1999-3-4 18 Butte Lowell Drive, Chico. [Lat./Long. on label is '39 46 N; 121 52 W']. 62 Comment
  JEPS127081  Calandrinia ciliata Lowell Ahart 2016-4-15 20753 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  SEINET12331913  Callitriche heterophylla Unknown 1985-1 4946 Butte East branch of Potter Ravine, about 2.25 mi N of Oroville Dam 350 Comment
  CHSC103742  Callitriche marginata Lowell Ahart 2010-5-16 16687 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC29057  Callitriche marginata R. A. Schlising 1980-4-2 3542 Butte Richvale vernal pools; 1/4 mile S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  JEPS119795  Callitriche marginata Lowell Ahart 2012-5-4 17989 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC77983  Callitriche trochlearis Lowell Ahart 2000-5-10 8335 Butte On the bottom of a small moist (seepy) swale, about 100 yards south of a deep wash, 100 feet east of a dirt road, Peter Ahart ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC31419  Calocedrus decurrens L. Ahart 1980-9-10 2623 Butte Along the edge of Bean Creek Rd, ca. 1 mi se of Little Bald Rock, ne of Oroville. 335 Comment
  JEPS115855  Calocedrus decurrens Lowell Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA769227  Calocedrus decurrens L. Ahart 2009-11-19 16548 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico 270 Comment
  SEINET12048527  Calochortus albus Unknown 1977-1 16 Butte ca 1 m W fo Cherokee Rd, 4 km N of Oroville 152 Comment
  SEINET3884902  Calochortus albus Johann D. Watjen 1969-5-4 32 Butte Table Mountain, 0.4 mile off of Highway 70, 2 miles southwest of West Fork Feather River.; 0 98 Comment
  CAS-BOT-BC489972  Calochortus leichtlinii E. B. Copeland 1929-7-17 352 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC491860  Calochortus luteus A. A. Heller 1914-4-24 11322 Butte Hills 8 miles north of Oroville Comment
  SBBG57700  Calochortus luteus M. M. Miles -Jun-1886 Butte Butte County [no specific locality] Comment
  SEINET12046805  Calochortus luteus Unknown 1978-1 19 Butte ca 0.5 mi W of jct of Pentz Rd & Pentz Magalia Hwy, ca 1.5 mi SW of West Branch of Feather River 183 Comment
  CHSC101328  Calochortus monophyllus Lowell Ahart 2009-4-22 15597 Butte West side of Guardians Trail, about 100 yards north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC115417  Calochortus monophyllus Kate Ronan 2013-4-9 Butte Centerville flumes trail. 368 Comment
  CHSC3522  Calochortus monophyllus John Francis 1966-4-23 125 Butte Table Mt. Comment
  CAS-BOT-BC492599  Calochortus monophyllus Lowell Ahart 1985-3-22 4849 Butte Foothill Woodland. About 1/2 mile north-east of the west Branch Bridge across Lake Oroville, 1/4 mile east of Highway 70, north of Oville 450 Comment
  CAS-BOT-BC492601  Calochortus monophyllus Jim Riley 1923-4-2 s.n. Butte Richardson Spring Comment
  SEINET10469599  Calochortus monophyllus Mary Susan Taylor 1980-4-18 Taylor 2511 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CHSC44657  Calochortus nudus L. P. Janeway 1988-7-1 2927 Butte Along mdwy cr draining lake of the SE-most head-waters of Butte Cr. 1935 Comment
  CAS-BOT-BC175754  Caltha leptosepala Alice Eastwood 1912-8-22 1841 Butte Meadows, Lassen Butte Comment
  CHSC11814  Caltha leptosepala var. biflora E. B. Copeland 1930-6-1 639 Butte Jonesville. In meadow by North Willow Creek. 1550 Comment
  UC1876193  Calycadenia fremontii Gerald D. Carr 1971-6-15 563 Butte 0.4 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  CHSC41241  Calycadenia multiglandulosa J. D. Jokerst 1985-5-24 2027 Butte Cherokee area just south of Campbell Flat and east of Table Mt. In my backyard. Comment
  UCD129711  Calycadenia multiglandulosa L. Ahart 1981-9-26 3208 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC93880  Calycadenia oppositifolia L. P. Janeway 2006-5-28 8637 Butte Northern High Sierra Nevada. Open serpentine bowl on west side of Concow Road about 3.2 mi northeast of the upper end of Concow Reservoir. 856 Comment
  RSA255506  Calycadenia oppositifolia Gerald D. Carr 1971-5-23 553 Butte Vicinity of Jarbo Gap, Hwy 70, above turnout to Concow Rd. Comment
  RSA788197  Calycadenia oppositifolia R. L. Carr 1977-7-5 2029 Butte ca. 15 air mi N of Oroville, Hwy 70 at Pinkston Canyon Rd Jct, ca. 200 yds N on small dirt powerline road, (very near GDC 553, 558). 653 Comment
  SEINET10473677  Calycadenia oppositifolia Lowell Ahart 1985-5-15 Ahart 4979 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
  JEPS120621  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  CAS-BOT-BC90928  Calycanthus occidentalis John Thomas Howell 1967-6-22 42640 Butte Sierra Nevada. 1 mile southwest of Pulga Bridge Canyon of the Feather River North Fork. Comment
  JEPS115584  Calycanthus occidentalis Lowell Ahart 2009-5-23 15747 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 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
  SEINET10572718  Calyptridium umbellatum Mary Susan Taylor 1978-7-18 Taylor 1691 Butte On N side of Old Humboldt Road in open area in Yellow Pine Forest, ca. 2 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CHSC33652  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1975-6-20 3167 Butte N of Magalia and NE of De Sabla, just NE of junction of Skyway and Humbug/Humboldt Roads. 853 Comment
  CHSC33654  Calystegia atriplicifolia subsp. buttensis R. A. Schlising 1974-9-5 3155 Butte Along Skyway near De Sabla, 0.4 mi S of junction with Humbug Road leading to Nimshew. Comment
  CHSC94025  Calystegia occidentalis subsp. occidentalis R. D. Fischer 2005-4-30 735 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants on a west facing, brushy hillside trail. 518 Comment
  JEPS94294  Campanula prenanthoides Lowell Ahart 1997-8-1 7793 Butte about 1/4 mi e of Table Mountain (about 8 air mi ne of Stirling City, on w side of Little Kimshew Creek); Little Kimshew Creek 1371 Comment
  RSA456171  Campanula prenanthoides H. F. Copeland 599 Butte Jonesville. 1524 Comment
  CAS-BOT-BC37267  Cardamine breweri Clarence Roy Quick 1963-7-16 63 50 a Butte Sierra Nevada. Section Corner Meadow, east of Pulga. Feather River Canyon. 1463 Comment
  CHSC35761  Cardamine breweri R. E. Preston 1982-6-18 303 Butte At stream margin; site of Merrimac, ca. 22 mi ne of Oroville. 1173 Comment
  UCD114500  Cardamine californica R. E. Preston 1981-2-28 45 Butte 50 m east of Coutelenc Road, 300 m north of its junction with The Skyway, Magalia. 700 Comment
  CHSC28635  Cardamine oligosperma M. S. Taylor 1979-3-31 1966 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi ne of Concow Rd and Lake Concow, ca. 25 mi n of Oroville. 670 Comment
  CHSC38050  Cardamine oligosperma R. E. Preston 1983-2-7 379 Butte N side of McCabe's Creek. 371 Comment
  CHSC102187  Cardamine pachystigma George W. Hartwell 2009-3-14 Butte Rim Road, approx. 1.5 miles NW of SR 70 in an area burned by the Butte Lightening Complex wildfire, summer 2008. 885 Comment
  CHSC83932  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-18 7740 Butte Northern High Sierra Nevada. Low in the canyon of North Fork Feather River (Lake Oroville) between Big Bend Mountain and Swayne Hill; 1.8 km north-northwest of the mouth of French Creek. 329 Comment
  CHSC83934  Cardamine pachystigma L. P. Janeway; Gavin Blosser, Adam Henderson 2003-3-19 7743 Butte Northern High Sierra Nevada. North-facing slope just above French Creek (Lake Oroville) about 300 m south-southeast of its confluence at North Fork Feather River. 341 Comment
  CHSC92532  Cardamine pachystigma L. P. Janeway; S. Mackey Hillaire, M. Brown, J. Tuitele-Lewis 2005-4-26 8369 Butte Northern High Sierra Nevada. Plumas National Forest; Ridgetop between Cirby Creek and Flea Valley Creek drainages; along Concow Road 0.9 road km north-northwest of junction with Rim Road (Ponderosa Way). 1042 Comment
  CHSC101492  Cardamine pachystigma var. dissectifolia Samantha Mackey Hillaire 2007-4-17 1250 Butte DeSabla Powerhouse Road, Butte Creek Canyon, approximately 1 mile SW of DeSabla Reservoir. UTM 10 618377E, 4414780N. 463 Comment
  CHSC33169  Cardamine pachystigma var. dissectifolia R. E. Preston 1981-2-28 46 Butte 100 m w of Little Butte Cr., ca. 2.4 km n of Magalia. 717 Comment
  HSC100727  Cardaria chalepensis Lowell Ahart 2009-4-2 15520 Butte E side of Hwy. 99, ~1 mi. S of Gridley. 27 Comment
  CHSC106866  Carduus pycnocephalus Lowell Ahart 2011-5-1 17333 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC116739  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2016-5-24 20843 Butte Near the ditch, about 200 yards west of Loma Rica Road, about 300 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. 50 Comment
  CAS-BOT-BC18210  Carex Lowell Ahart 1988-4-15 5960 Butte In the lawn, Peter Ahart Ranch, about 1.5 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC49385  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-16 3029 Butte Large meadow at head'waters' of Willow Cr. 1935 Comment
  UCD140080  Carex amplifolia L. P. Janeway 1988-6-16 2793 Butte West Br Butte Creek near Lomo; 0.1 mile from Humboldt Road along Cedar Loop Road. 1158 Comment
  UC1108031  Carex angustata H. F. Copeland 1932-8-12 Butte Butte Creek Meadow Comment
  SD470  Carex angustata E. B. Copeland 1930-8-10 Butte Jonesville; marshy meadow. 456 Comment
  CAS-BOT-BC18055  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. 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
  CHSC43913  Carex barbarae L. P. Janeway 1987-5-7 2027 Butte Along Coal Cyn Rd 1.8 mi NE of hwy 70 and just past the drive to Coal Cyn Power Plant. Adj to mdw and Rubus riparian area at penstock. 160 Comment
  CHSC43915  Carex barbarae L. P. Janeway 1987-6-8 2167 Butte Sandy flat along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  UCD140165  Carex barbarae John Thomas Howell 1955-9-6 30908 Butte Bank of Butte Creek east of Butte City. Comment
  CHSC61650  Carex bolanderi Lowell Ahart 1993-9-13 7227 Butte On the south side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  CHSC84208  Carex bolanderi Lowell Ahart 2003-6-30 10324 Butte Along a small stream, on the south side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  SEINET10586772  Carex bolanderi Lowell Ahart 2010-6-12 Ahart 16796 Butte T22N, R2E, northwest 1/4 Section 35. About 150 yards east of Ten Mile House Road, about 3.4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 238 Comment
  UC1609342  Carex bolanderi Lowell Ahart 1993-6-26 7008 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CAS-BOT-BC19600  Carex brainerdii L. P. Janeway 1987-7-5 2450 Butte 0.4 mile east on a spur road from the Concow Road, which is 1.0 mile southwest of Jones Meadow. 1798 Comment
  CHSC91175  Carex brainerdii L. P. Janeway 2005-5-29 8406 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
  CHSC107598  Carex cyrtostachya Lowell Ahart 2011-7-9 17574 Butte Southeast edge of a large open bare granite area, about 3/8 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 974 Comment
  CDA33055  Carex densa J. W. Jones Jul 1922 Butte Biggs; Rice Station 0 Comment
  CAS-BOT-BC19847  Carex echinata E. B. Copeland 1929-7-5 s.n. Butte Jonesville. 1500 Comment
  CAS-BOT-BC20001  Carex feta J. D. Jokerst 1984-5-19 2025 Butte At the edge of Highway 70. Comment
  CHSC84750  Carex feta L. P. Janeway 2003-6-8 7818 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1116 Comment
  SEINET4286135 Image available Carex feta L. Janeway, Gog, L 2008-1 3185 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CAS-BOT-BC21238  Carex fracta R. Tallent 1987-8-18 953 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville. 1720 Comment
  HSC87072  Carex fracta L. P. Janeway 1987-6-27 2337 Butte Canyon of Little Kimshew Creek, along road 0.9 mi. N of the Concow Rd. 1509 Comment
  CHSC42828  Carex hirtissima L. P. Janeway 1987-5-10 2045 Butte Mdw at jct of Skyway and Doe Mill Rd/Humbug Rd, just N of Da Sabla Reservoir. 838 Comment
  JEPS110450  Carex integra Lowell Ahart 2006-8-15 13175 Butte N edge of a wet area W of a large open meadow and bog, about 20 yards E of the poor dirt road, about 100 yards S of the cabin, about 3/4 mile (air) NW of Jonesville, about 5 miles (air) NE of Butte Meadows. 1569 Comment
  CAS-BOT-BC94043  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville, Ahart's station, Sacramento Valley (ScV) 65 Comment
  CHSC44689  Carex jonesii L. P. Janeway; C. A. Janeway 1986-9-13 1850 Butte Mdw along Humbug Summit Rd ca 1 1/2 mi SW of the summit. 1859 Comment
  CHSC76846  Carex laeviculmis L. P. Janeway; B. Castro, Linnea Hanson, Hal Durio. 1997-6-13 5138 Butte About 1.8 mi northeast of Brush Creek, about 1.0 mi east-southeast of Mountain House; along an unnamed tributary of Mountain House Creek at Road 22N54. 1112 Comment
  CAS-BOT-BC31123  Carex lemmonii L. P. Janeway; Robert A. Schlising 1988-7-22 3069 Butte Jonesville quad. Seep just above the High Lakes Rd. 3.4 mi W of the pass. In the canyon of Philbrook Creek. 1905 Comment
  CHSC11934  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  JEPS94302  Carex lemmonii Lowell Ahart 1997-8-1 7777 Butte about 8 air mi ne of Stirling City (near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mi e of Table Mountain); Snow Meadow 1524 Comment
  CAS-BOT-BC32152  Carex multicaulis Lowell Ahart 1980-5-29 2361 Butte 2.5 mi NE of Mountain House. 1100 Comment
  CHSC43876  Carex multicaulis L. P. Janeway; C. A. Janeway 1986-8-31 1802 Butte South side of hwy 32, 19 mi E of hwy 99; near Platte Mtn Lookout CDF fire station. 1066 Comment
  CHSC43921  Carex multicaulis L. P. Janeway; C. A. Janeway 1987-4-20 2007 Butte In front of county line sign along hwy 32 less than 1 mi N of Humboldt Road (to Butte Mdws). 1097 Comment
  RSA325125  Carex multicaulis M. S. Taylor 1981-3-24 3435 Butte Two mile stretch along both sides of Feather River Highway (70), just NE of Pulga to Cresta Powerhouse, ca. 20 miles NE of Oroville. 518 Comment
  HSC87067  Carex multicaulis L. P. Janeway 1987-5-20 2080 Butte N fork of Feather River, above Hwy. 70, 3.1 mi. NE of Pulga Bridge 473 Comment
  CHSC42802  Carex pellita L. P. Janeway; C. A. Janeway 1986-8-31 1815 Butte NE side of Philbrook Reservoir, across the rd from the picnic area. 1691 Comment
  UC600697  Carex pellita H. F. Copeland 1923-8-1 554 Butte Jonesville Comment
  JEPS102949  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte Within the City of Chico; south side of town; in backyard lawn at 129 W. 19th Street 60 Comment
  CHSC48555  Carex rossii L. P. Janeway; R. A. Schlising 1988-7-16 3014 Butte Along Willow Cr 1 mi W of Humbug Rd. 1798 Comment
  CAS-BOT-BC117391  Carex senta A. S. Crafts 1976-4-12 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC44964  Carex serratodens L. P. Janeway; C. A. Janeway 1986-10-12 1918 Butte Side cyn on N-side N Fk Feather River and along hwy 70 ca 5 mi E of Jarbo Gap. Site of old (probably) mining operation. 487 Comment
  CHSC44106  Carex stipata var. stipata L. P. Janeway 1987-6-8 2163 Butte Along French Cr across from mouth of Ram Cr. 617 Comment
  CHSC106161  Carex subfusca Peter F. Zika 2009-6-17 24515 Butte Cascade Range Highlands (CaRH), below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC52879  Carex subfusca L. P. Janeway 1987-7-4 2428 A Butte Near seepy area along road to Jones Mdw 9.6 mi from Inskip. NW-facing slopes above Last Chance Cr. 1676 Comment
  UC478549  Carex subfusca E. B. Copeland 1929-7-20 611 Butte in woods by Jones Creek Jonesville 1500 Comment
  CDA33157  Carex subfusca T. C. Fuller 1963-7-12 9187 Butte Butte Creek; road to Jonesville, 2 miles east of Butte Meadow. 0 Comment
  SEINET7577159 Image available Carex subfusca Lowell Ahart 1987-5-6 5544 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-BC115067  Carex vesicaria L. P. Janeway 1988-7-29 3132 Butte Meadow near Humbug Summit Rd 1.5 mi NE of the Snag Lake dam. 1767 Comment
  CAS-BOT-BC65489  Carex vesicaria var. vesicaria L. P. Janeway 1995-8-5 4889 Butte North side of Humbug Summit Rd about 1.2 mi northeast of Snag Lake. 1801 Comment
  CHSC44838  Carex whitneyi L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3077 Butte Top of ridge between Snag Lake and Butte Cr; ca 1.4 air mi W of Butte Creek House. 1935 Comment
  SEINET13723638  Carex xerophila P. F. Zika, L. P. Janeway 2012-5-16 25868 Butte northern highlands, Coutolenc Road 0.1 mi north of Skyway Road 720 Comment
  SEINET10478176  Castanea sativa Melvin L. Conrad, Douglas G. LeDoux; Patricia L. Kenney 1973-6-5 Conrad 7034 Butte Roadside in paradise 792 Comment
  CHSC115356  Castilleja affinis subsp. affinis Lowell Ahart 2015-3-24 19962 Butte Cliffs, on the road cut on the south side of Pacific Heights Road, about 3 1/2 miles (air) southwest of Oroville. 47 Comment
  CHSC114978  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-13 20032 Butte Road cut, on the west side of Rim Road, about 1/4 mile north of Jrbo Gap, about 15 miles (air) north of Oroville. 730 Comment
  CHSC27563  Castilleja applegatei subsp. pinetorum Robert Schlising 1978-5-17 3262 Butte Magalia. Just S of Magalia Reservoir and crossed by S. T. RR and Coutelenc Road. 670 Comment
  CAS-BOT-BC255455  Castilleja applegatei var. pinetorum Lowell Ahart 1985-5-15 5005 Butte 1/8 mile east of dirt road, 1 1/2 miles north-east of Concow Res. 800 Comment
  UC492741  Castilleja arachnoidea H. F. Copeland 1932-8-24 Butte just above Butte Creek meadows (to the crest of w wall of Butte Creek drainage basin); Jonesville, Butte Creek Comment
  CHSC55418  Castilleja attenuata L. P. Janway 1991-4-30 3920 Butte Ridge between Montgomery Bar Ravine and Lannigan Gulch, ca 3/4 mi west of Crystal Hill and ca 1/2 mi south of middle Fork Feather River. 426 Comment
  JEPS124207  Castilleja campestris subsp. campestris Lowell Ahart 2015-4-11 20030 Butte About 1 1/2 miles northeast of Honcut, about 1/2 miles east of Parlemo Honcut Highway, about 12 miles (air) south of Oroville. Comment
  CDA41243  Castilleja lacera L. Ahart 2005-7-13 12146 Butte About 10 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. Comment
  CHSC26789  Castilleja lacera M. S. Taylor 1978-5-6 1620 Butte Ca. 8 mi ne of Chico, ca. 1/2 mi e of Cohasset Rd. 137 Comment
  JEPS124169  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte About one mile north of suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. Comment
  CDA33627  Castilleja lineariloba R. A. Price 2010-5-1 s.n. Butte Along Oroville Reservoir; northwest of bridge. 0 Comment
  POM181782  Castilleja miniata H. F. Copeland 1927-09 253 Butte Jonesville. Comment
  POM252809  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte Upper end of Snag Lake, East of Chaparral. 1524 Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  SFV3409  Castilleja rubicundula subsp. lithospermoides M. L. Vincent 1962-4-17 201 A Butte Sierra Nevada At Pentz and Nelson Bar Roads. 5 miles south of Paradise. 330 Comment
  CHSC38417  Caulanthus lasiophyllus Vernon Oswald 1983-3-6 124 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.3 mi e of the power lines. 341 Comment
  CHSC46480  Caulanthus lasiophyllus Lowell Ahart 1974-4-11 384 Butte Peter Ahart Ranch, about 1 1/2 miles north and 2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  RSA181783  Ceanothus cordulatus H. F. Copeland 1927-9-2 232 Butte [Unspecified] Comment
  UC600529  Ceanothus cordulatus H. F. Copeland 1927-9-2 Butte Jonesville Comment
  CAS-BOT-BC48813  Ceanothus cuneatus A. A. Heller; H. E. Brown 1902-5-7 5488 Butte Berry Canyon (near Clear Creek) Comment
  CHSC107398  Ceanothus cuneatus Blake McSorley 2010-3-2 Butte Bidwell Park at end of Centennial Ave. In degraded riparian area along Big Chico Creek. 86 Comment
  UC224215  Ceanothus cuneatus var. cuneatus H. E. Brown Mar 2 1897-Mar 22 1897 157 Butte near Clear Creek 53 Comment
  SBBG28496  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville 1650 Comment
  SD2946  Ceanothus integerrimus E. B. Copeland 1929-7-14 Butte Jonesville, in edge of fir and pine woods. 1650 Comment
  POM136438  Ceanothus integerrimus var. puberulus A. A. Heller, H. E. Brown 1902-5-7 5481 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC51730  Ceanothus lemmonii A. A. Heller 1914-5-18 11371 Butte Forest Ranch, West slope of the Sierra near Forest Ranch 822 Comment
  CHSC1511  Ceanothus lemmonii V. Keeler 1925-3-2 Butte Paradise. 548 Comment
  CHSC31410  Ceanothus lemmonii Leslie Steidl 1980-4-10 14 Butte Ca. 17 mi ne of Oroville, ca. 2 yd e of Lumpkin Rd and 10 yd n of Mc Cabe Creek. SW1/4 of NE1/4 of NE1/4 of SE1/4. 390 Comment
  CHSC86136  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  LA44958  Ceanothus prostratus E. B. Copeland; 1930-7-7 425 Butte Jonesville 1600.0 Comment
  SEINET194924  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  UC1071269  Ceanothus prostratus P. L. Johannsen 1936-7-16 925 Butte 1 3/4 mi ese Butte Mdws (Lassen National Forest); , Paynes Creek Quad. Comment
  UC600530  Ceanothus prostratus H. F. Copeland 1931-6-10 Butte between Willow and Colby Creeks; Jonesville, btw Willow and Colby Creeks Comment
  UC725531  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte Comment
  CDA7091  Centaurea calcitrapa W. Gilbert, R. Dodd 1970-7-22 Butte South side of Highway 32 to Lake Almanor, northeast of Forest Ranch, 19.5 miles northeast of Chico. 0 Comment
  CAS-BOT-BC272093  Centaurea melitensis A. A. Heller 1916-4-13 1753 Butte Stilson Canyon east of Chico Comment
  CAS-BOT-BC272096  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  SEINET10840940  Centaurium tenuiflorum Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4128 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
  JEPS94760  Centaurium venustum Lowell Ahart 1998-6-3 7969 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CAS-BOT-BC288525  Centromadia fitchii David D. Keck 1930-7-25 973 Butte 6.5 miles E of Oroville on Forbestown Rd 425 Comment
  CHSC45958  Centunculus minimus Lowell Ahart 1975-6-19 795 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. 39 Comment
  CHSC113390  Cephalanthera austiniae Lowell Ahart 2014-7-2 19539 Butte North edge of a small meadow, on the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  POM107566  Cephalanthera austiniae C. C. Bruce 1897-06 64 Butte Sutton House Comment
  CHSC42972  Cephalanthus occidentalis var. californicus Lowell Ahart 1987-7-17 5828 Butte Near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC111148  Cerastium fontanum subsp. vulgare Lowell Ahart 2012-6-14 18192 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CDA3350  Cerastium fontanum subsp. vulgare T. C. Fuller 1962-7-12 9183 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC92534  Cerastium glomeratum L. P. Janeway 2005-3-10 8344 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  CHSC115455  Cercocarpus betuloides M. Sutton; C. Yasuda, S. Luse 2013-3-5 6 Butte Ten mile house trail. 391 Comment
  CHSC116951  Cercocarpus betuloides Matthew Forster 2013-3-5 Butte Hwy 32 off of 14 Mile House Rd. 472 Comment
  CHSC52367  Cercocarpus betuloides var. betuloides Pauleen Broyles 1987-4-24 1001 Butte On N side of Singer/Pine Creek in Oak Riparian Woodland. Vina Plains Preserve. Comment
  CHSC49825  Chaenactis glabriuscula var. heterocarpha Vernon Oswald 1990-4-4 4149 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, ca. 0.2 mi ne of Nelson Bar Launch, ca. 0.2 mi se of Lime Saddle Powerhouse. 304 Comment
  CHSC3221  Chamaecyparis lawsoniana Virginia Hagaman 1966-3-5 47 Butte Lower Bidwell Park. Comment
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Jul 25 2018
  CHSC6636  Chamaecyparis lawsoniana M. MacArthur 1968-6-12 367 Butte S side of Administration Building, Chico State College campus. 60 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
  CDA35238  Chamaesyce hooveri T. C. Fuller 1962-5-17 8712 Butte Highway 99E to Vina, 12.3 miles northwest of Chico. 0 Comment
  CHSC102522  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 41 Comment
  CHSC113525  Chamaesyce maculata Lowell Ahart 2014-9-23 19879 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
  CHSC47424  Chamaesyce maculata Lowell Ahart 1975-7-19 898 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 36 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
  CDA32021  Chamaesyce ocellata subsp. ocellata L. 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. Comment
  CHSC47422  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1984-8-19 4785 Butte North of the state borrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville. 36 Comment
  CHSC58911  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1992-7-21 6794 Butte On the sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  JEPS95806  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 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-BC32685  Chamaesyce sulfurea Amos Arthur Heller 1913-9-16 11140 Butte Hills near Big Chico Creek, east of Chico Comment
  SEINET7728148  Cheilanthes californica Unknown Butte Cold Canyon Comment
  POM121005  Cheilanthes gracillima C. C. Bruce 1898-05 2397 Butte Summit Comment
  CHSC42499  Chenopodium album Lowell Ahart 1987-6-9 5726 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  JEPS95916  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1999-8-22 8183 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  RSA725000  Chenopodium ambrosioides var. ambrosioides L. Ahart 2006-9-11 13281 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. 432 Comment
  CHSC51255  Chenopodium berlandieri Lowell Ahart 1990-9-30 6609 Butte On the south side of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  SEINET10479018  Chenopodium botrys Mary Susan Taylor 1979-10-5 Taylor 2226 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
  CHSC60679  Chenopodium californicum Vernon H. Oswald; Jim Snowden 1993-3-18 5232 Butte Near rimrock on the N side of Nugen Canyon, on the SE side of Neal Rd., about 0.25 mi. south of 'The Narrows'. 121 Comment
  SEINET10479079  Chenopodium pumilio Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4744 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC451482  Chimaphila umbellata E. B. Copeland 1930-6-24 432 Butte Jonesville 1550 Comment
  SBBG16796  Chimaphila umbellata E. B. Copeland 1930-6-24 Butte Jonesville 1550 Comment
  CHSC44918  Chloris virgata Lowell Ahart 1988-7-31 6141 Butte On the east side of Lone Tree Road, about 50 yards north of the intersection with Cox Lane, about 8 miles south of Oroville. 33 Comment
  CHSC49527  Chloris virgata Vernon Oswald 1983-7-3 799 Butte Located at the n-e corner of Calif. Hwy 32 and W. Lindo Ave. in Chico. Roadside, along edge of almond orchard. Comment
  CHSC30812  Chlorogalum pomeridianum M. S. Taylor 1978-7-21 1841 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CAS-BOT-BC252671  Chorizanthe membranacea Lowell Ahart 1980-5-12 2244 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC51892  Chorizanthe membranacea L. P. Janeway 1988-5-29 2710 Butte Ridge between hwy 32 and the piece of old road that connects to Crown Point Rd, 2 air mi N of Ten Mile House. S-facing slope near tuscan Mudflow outcrop. 579 Comment
  RSA0036433  Chorizanthe membranacea Lowell A. Ahart 2012-5-12 18038 Butte On the west edge of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7.5 miles (air) northeast of Chico. 414 Comment
  RSA104166  Chorizanthe membranacea R. M. Austin 1883-1 s.n. Butte [No location data on label] 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
  SEINET516311  Chorizanthe stellulata Vernon H. Oswald 1998-5-6 8986 Butte Upper Bidwell Park (new addition), Pine trail near the trailhead on Hwy 32 between Chico and Forest Ranch opposite Santos Rd. 453 Comment
  UC1135229  Chrysolepis sempervirens C. G. Albertus 1933-7-26 52 Butte 0.25 mi s Barnum Mill; Chico Quad. 1371 Comment
  POM308435  Chrysothamnus nauseosus subsp. albicaulis Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3064 Butte Feather River Hwy. Comment
  JEPS106001  Cicendia quadrangularis Lowell Ahart 2004-4-4 10714 Butte Bottom of a vernal pool, about 250 yards east of Wilber Road, northeast of the high hill crossed by Wilber Road, cattle pasture, about 3 miles (air) west of Thermalito 48 Comment
  JEPS117264  Cicendia quadrangularis Lowell Ahart 2010-5-14 16645 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 395 Comment
  UCR7827  Cichorium intybus Wm. Horn Jr. 1964-6-28 640628- 01 Butte California Div. of Forestry Station; along road 1083 Comment
  UC921141  Cirsium occidentale var. candidissimum H. S. Reed 1939-8-5 292 Butte Chico 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
  CHSC90196  Clarkia arcuata Camela J. Ott 1989-4-11 11 Butte Ca. 100 m s of covered bridge, 10.2 km ese of Chico. 200 Comment
  CHSC84865  Clarkia biloba subsp. brandegeeae L. P. Janeway; John Hunt 2003-6-5 7809 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge. 290 Comment
  JEPS105624  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake 287 Comment
  LA205996  Clarkia biloba subsp. brandegeeae H. Lewis; M. Lewis 1947-6-11 394 Butte 7.0 mi. NW of Bangor on the road to Oroville Comment
  JEPS105625  Clarkia concinna subsp. concinna L. P. Janeway, John Hunt 2003-6-5 7810 Butte Northern Sierra Nevada Foothills. Steep north-facing slope above Lake Oroville 550 m east of the south end of Bidwell Bar Bridge 290 Comment
  CAS-BOT-BC164524  Clarkia gracilis subsp. albicaulis R. W. Thorp 1963-7-1 63 -47 Butte Jarbo Pass, 6.2 miles northeast Comment
  LA25999  Clarkia gracilis subsp. albicaulis Carl B. Wolf; 1937-6-12 8783 Butte 2.5 mi. SE of Oroville on road to Wyandotte 91 Comment
  CAS-BOT-BC171878  Clarkia gracilis subsp. gracilis Carl B. Wolf 1937-5-14 8663 Butte Sierra Nevada Foothills, 2 1/2 mi. SE of Oroville on road to Wyandotte 91 Comment
  CHSC63970  Clarkia mildrediae subsp. lutescens B. Castro; Robin Fallscheer 1989-7-13 321 Butte Ca 4.5 road mi NE of Brush Creek, ca 0.2 mi SW of Junction House, on NW-facing road cut on SE side of the Oro-Quincy Hwy ca 0.6-0.7 mi S of its jcn with USFS Rd 23N60. 990 Comment
  CHSC71151  Clarkia mildrediae subsp. lutescens L. P. Janeway 1994-7-7 4684 Butte South side of ridge between Haphazard, Baker, and Foreman Creeks; 3.7 road mi west of Oroville-Quincy hwy and Rogers Cow Camp via Roads 23N15, 22N66X, and 22N40X. Southwest-facing road cutbank and above. 1158 Comment
  CHSC46132  Clarkia mildrediae subsp. mildrediae Lowell Ahart 1984-7-19 4745 Butte Along a logging road, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 air miles north-east of Stirling City. 1371 Comment
  CHSC46134  Clarkia mosquinii Lowell Ahart 1984-6-8 4663 Butte In the cutbank at the little building at the Ponderosa Dam, about 2 air miles north-west of Forbestown. 335 Comment
  CHSC89908  Clarkia mosquinii N. L. Jurjavcic; M. K. Hayden 2004-6-10 Butte Northern Sierra Nevada Foothills. Along roadside leading across Ponderosa Dam. 304 Comment
  UCD169420  Clarkia mosquinii L. P. Janeway 2002-6-22 7605 Butte Northern High Sierra Nevada. Along Bardee's Bar Road 1.3 km north of Big Bend Road; about 1/2 way between Jarbo Gap and North Fork Feather River. 655 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-BC163639  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1915-5-28 11908 Butte Near Cohasset Comment
  CHSC46386  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1989-5-23 6249 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CAS-BOT-BC172380  Clarkia purpurea subsp. viminea Mrs. J. H. Morrison 1932-6-5 s.n. Butte Durham Comment
  CHSC37429  Clarkia rhomboidea R. Schlising; K. Tarp 1982-7-28 4352 Butte E of Pulga and SW of Coyote Gap Station, on Big Bar Mountain Road. On roadside bank. 1249 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
  CAS-BOT-BC164801  Clarkia rhomboidea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River at junction with road to Las Plumas Comment
  SEINET10841118  Clarkia rhomboidea Lowell Ahart 1984-6-8 Ahart 4663 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC40613  Claytonia exigua subsp. exigua Ahart; Jokerst 1985-3-24 4859 Butte Found growing on damp bare broken disturbed serpentine west of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 550 Comment
  CAS-BOT-BC439112  Claytonia exigua subsp. exigua Lowell Ahart 1982-5-8 3418 Butte About 1/2 mile south-west of the Forbestown Res., about 4 1/2 miles north-east of Forbestown 800 Comment
  CHSC26737  Claytonia palustris M. S. Taylor 1977-7-15 1402 Butte Scattered creekside in shade, Butte Meadows, ca. 20 mi ne of Chico off Hwy 32. 1326 Comment
  SEINET10572698  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3499 Butte T21N R4E ne sec 14; Berry Creek quad. At end of Dark Canyon Rd at turnout near restroom, ca. 3.5 mi s of Big Bend Rds, ca. 5 air mi s of Jarbo Gap on Hwy 70, n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  UC726489  Claytonia parviflora subsp. parviflora A. A. Heller 1920-4-10 13362 Butte Chico Comment
  CHSC30356  Claytonia perfoliata subsp. perfoliata J. D. Jokerst 1979-3-5 1139 Butte Top of North Table Mt., 300 m NW of the intersection of Cherokee Rd and the E edge of section 17. Comment
  JEPS108794  Claytonia perfoliata subsp. perfoliata Lowell Ahart 2006-5-8 12596 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
  SEINET10929039  Claytonia rubra Mary Susan Taylor 1981-3-24 Taylor 3440 Butte Two mile stretch along both sides of Feather River Hwy (70), just ne of Pulga to Cresta Powerhouse, ca. 20 mi ne of Oroville; granite gravels & soil; ca. 1700 ft. T23N R5E Pulga quad. 518 Comment
  CAS-BOT-BC443765  Claytonia rubra subsp. rubra A. A. Heller 1918-5-5 13007 Butte Near Magalia Comment
  CHSC26641  Clematis lasiantha M. S. Taylor 1977-11-12 1543 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC52782  Clematis lasiantha Neal Schaeffer 1982-4-18 10 Butte Between Pentz Rd and Kunkle Reservoir, ca. 20 m from road, 50 m n of reservoir access road. 450 Comment
  POM181656  Clematis lasiantha Williams 1927-04 11 Butte Near Richardson's Springs, Butte County Comment
  UC83304  Cleome platycarpa Mrs. R. M. Austin Jun 1887 Butte Comment
  CHSC103725  Collinsia heterophylla Lowell Ahart 2010-5-7 16627 Butte On both sides of the Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeat of Chico. 238 Comment
  SEINET12326994  Collinsia sparsiflora var. arvensis Unknown 1984-1 18 Butte jct Hwy 29 & 175, ca 3 mi SE of Kelseyville 463 Comment
  CHSC109118  Collinsia sparsiflora var. collina Lowell Ahart 2012-3-23 17784 Butte On the sides of the trail down to Big Chico Creek, about 50 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 215 Comment
  HSC32685  Collinsia sparsiflora var. collina David Johnson 1974-4-20 49 Butte Table Mtn. Comment
  CHSC33591  Collinsia tinctoria M. S. Taylor 1981-6-19 3959 Butte N side of Feather River Hwy 70, at nw end of Pulga ridge and along Pulga Rd. ca. 1/4 mi, ca. 20 mi ne of Oroville. 487 Comment
  UC1594549  Collinsia tinctoria Lowell Ahart 1992-5-9 6760 Butte about 2 air mi n of Oroville (on n side of the dirt road, on n side of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recreation Area, Thermalito Diversion Pool 76 Comment
  UC600654  Collomia grandiflora H. F. Copeland 1930-7-28 1312 Butte in woods near head of Willow Creek; neighborhood of Jonesville 1828 Comment
  UC116644  Comandra Mrs. R. M. Austin May 1896 298 Butte Little Chico Creek Comment
  SEINET10544541  Comandra pallida Mary Susan Taylor 1977-6-25 Taylor 1376 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  CHSC87561  Comandra umbellata subsp. californica R. D. Fischer 2004-4-13 64 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found near the southern end of Humboldt Trail. Old road bank. 441 Comment
  RSA31755  Comandra umbellata subsp. californica A. A. Heller 1918-5-5 13013 Butte Magalia. Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  RSA261487  Corallorhiza maculata Robert C. Burness 1970-5-24 78 Butte Northeast of Paradise from Stirling City, 6 miles southeast on Ragdump Road to Rudds Cabin on Feather River Branch 762 Comment
  RSA0084711  Cordylanthus pilosus subsp. hansenii L. Ahart 2009-8-3 16253 Butte W side of Ten Mile House Road, about 30 yards E of Big Chico Creek, Upper Bidwell park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 234 Comment
  SBBG128102  Cordylanthus pilosus subsp. hansenii L. Ahart 2010-9-12 17150 Butte just above the high water line of Lake Oroville, ca. 150 yards N of the S Fork of the Feather River, ca. 50 yards E of Sucker Crk, ca. 0.25 mi NW of the Ponderosa Dam 243 Comment
  UCR231505  Cordylanthus tenuis Anna M. Hurlbutt 2009-8-7 022 Butte Northern Sierra Nevada Mtns., vicinity of Inskip Inn, end of paved part of Skyway Rd., north of Paradise 1463 Comment
  LA209148  Cordylanthus tenuis subsp. tenuis E. B. Copeland; 1929-7-29 sn Butte Jonesville 502 Comment
  CHSC11902  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville. 1650 Comment
  POM193337  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville. 1650 Comment
  CHSC66075  Cornus glabrata Vernon H. Oswald 1996-5-22 7627 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Growing in the edge of a slough at the SE corner of the Riparian Sanctuary. 28 Comment
  JEPS88911  Cornus glabrata Lowell Ahart 1994-6-5 7310 Butte ca. 3 1/2 mi. s.w. Forbestown (s. of intersection of Black Bart Rd. & Forbestown Rd.) 609 Comment
  SFV2622  Cornus nuttallii B. Fuller 1961-4-15 s. n. Butte Hillside west of Paradise California Reservoir. Comment
  UC195372  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  UC600763  Cornus sericea subsp. sericea H. F. Copeland 1931-6-11 Butte by Scotch John Creek in Butte Creek Canyon Jonesville; Butte Creek Canyon, Scotch John Creek Comment
  SD1899  Corydalis caseana E. B. Copeland 1929-7-3 Butte Comment
  SFV16941  Corylus cornuta subsp. californica J. N. Hogue 1980-9-6 83 .7 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC54346  Cotoneaster pannosus Lowell Ahart 1991-6-19 6661 Butte Along the Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East, south-west of Oroville Dam. 213 Comment
  CAS-BOT-BC427628  Crassula aquatica Lowell Ahart 1982-5-14 3436 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 50 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
  CHSC30373  Crassula tillaea J. D. Jokerst 1979-3-9 1143 Butte Top of North Table Mt., 20 m N of Cherokee Rd. Comment
  RSA755766  Crataegus laevigata L. Ahart 2009-5-30 15792 Butte 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 air mile west of Highway 32, about 10 miles northeast of Chico. 270 Comment
  CHSC38642  Crataegus monogyna Vernon Oswald 1983-4-6 287 Butte Upper Bidwell Park, Chico, on the s edge of Upper Park Rd. 0.3 mi e of the end of the pavement. 94 Comment
  CHSC50542  Crepis occidentalis subsp. conjuncta Vernon Oswald 1990-7-3 4341 Butte Butte Creek House Meadow Ecological Preserve on Humbug Rd, ca. 3.5 mi east-southeast of Jonesville. Along the south fence line in section 27. 1780 Comment
  UCR51795  Crepis occidentalis subsp. pumila H. F. Copeland 1931-11-6 1532 Butte Jonesville, near Butte Creek Meadows. 1829 Comment
  CAS-BOT-BC376469  Crepis pleurocarpa Lowell Ahart 1988-7-28 6139 Butte Hillside at the north side of the dam at Lost Creek Reservoir 1036 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
  JEPS124192  Croton setiger Lowell Ahart 2015-10-9 20543 Butte About 3/4 mile northwest of the intersection of Bull Hill Road, Skyway, and Humbug Road, about 4 miles (air) north of Inskip. Comment
  SBBG19380  Croton setiger H. F. Copeland 1937-7-30 1604 Butte foothills, near Oroville Comment
  CHSC116731  Crucianella angustifolia Lowell Ahart 2016-5-25 20877 Butte On north side of the water ditch, about 200 yards south of La Porte Road, about1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  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
  CAS-BOT-BC190093  Crypsis schoenoides Herbert L. Mason 1945-9-19 12729 Butte Gray Lodge Game Refuge, northwest of Pennington. Comment
  CHSC116139  Crypsis schoenoides Lowell Ahart 2015-10-26 20601 Butte Strand of Lake Oroville, on west side of West Branch of Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  SEINET10836241  Crypsis schoenoides Lowell Ahart 1984-8-19 Ahart 4788 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  CHSC113542  Crypsis vaginiflora Lowell Ahart 2014-9-23 19875 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
  CHSC46748  Cryptantha affinis Lowell Ahart 1984-6-10 4708 Butte On the road cutbank, about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown. 640 Comment
  JEPS94328  Cryptantha affinis Lowell Ahart 1997-8-1 7800 Butte about 8 air mi ne of Stirling City (along edge of the dirt road and n of the camps along Little Kimshew Creek, about 1/4 mi n of the County Road, e of Bald Mountain) 1219 Comment
  SEINET10877146  Cryptantha affinis Lowell Ahart 2007-5-29 Ahart 13926 Butte T21N, R6E, Section 28. Normal size plants, on dry rocky soil, near the southeast edge of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/2 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. Foothill Woodland. 637 Comment
  CHSC71165  Cryptantha flaccida Lowell Ahart 1998-6-9 7995 Butte About 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  UC857119  Cryptantha flaccida A. A. Heller 1914-4-27 11325 Butte 8 mi n Oroville Comment
  POM368226  Cryptantha flaccida L. Ahart, P. Ahart 1984-5-28 4649 Butte On a large road cutbank along Highway 40, now called Dark Canyon Road, ca. 2 miles E of Old Yankee Hill, ca. 16 miles NE of Oroville. 450 Comment
  JEPS108983  Cryptantha intermedia Lowell Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 354 Comment
  UCD80136  Cryptantha intermedia CNPS SN Foothill Team 2006-5-23 SNNR 0789 a Butte BLM Parcels near Paradise. 520 Comment
  CHSC33413  Cryptantha torreyana R. A. Schlising 1980-7-5 3832 Butte N part of county; at roadside, 2.0 miles S of Butte Meadows junction of Skyway and Humboldt Road, along latter. 1432 Comment
  CHSC58865  Cryptogramma acrostichoides Lowell Ahart 1992-7-26 6837 Butte On the south side of Coon Hollow, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1737 Comment
  SEINET10531479  Cupressus macnabiana Lowell Ahart Ahart 5007 Butte Near a steel tower line, west of Rocky Ridge, about 4 miles north-east of Jarbo Gap. Comment
  JEPS94687  Cuscuta howelliana Lowell Ahart 1998-7-18 8044 Butte about 7 air mi n of Oroville (North Table Mountain, e of the fence, e of the cow chute and on the e side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  RSA299404  Cuscuta howelliana L. Ahart 1979-10-7 s.n. Butte Peter Ahart Ranch, Honcut. In vernal pool in a farmed field in Valley Grassland. 35 Comment
  POM219431  Cuscuta suksdorfii var. subpedicellata E. B. Copeland 1931-7-17 676 Butte Jonesville. Near the head of South Willow Creek. 1700 Comment
  JEPS95935  Cycloloma atriplicifolium Lowell Ahart 1999-8-13 8159 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
  SEINET10479028  Cycloloma atriplicifolium Mary Susan Taylor 1979-10-2 Taylor 2210 A Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  CHSC2138  Cynodon dactylon H. Silberman; D. Isaac 1949-5-1 Butte Chico. 57 Comment
  CHSC21260  Cynoglossum grande M. S. Taylor 1973-3-27 30 Butte Ca. 5 yds s of Humbug Rd, ca. 19 mi se of Chico. 548 Comment
  CHSC3536  Cynoglossum grande John Francis 1966-4-6 80 Butte 0.3 mile from intersection of Pentz-Magalia Rd. and Nelson Bar Rd., on Nelson Bar Rd. Comment
  CHSC4715  Cynoglossum grande R. Carter 1966-3-13 295 Butte Found ca. 6 mi. E of Chico at intersection of Honeyrun Rd. and Humbug Rd in Butte Cr. Canyon. Ca. 150 yds. up slope on S side of canyon. Comment
  JEPS127241  Cynosurus echinatus Lowell Ahart 2016-5-24 20871 Butte About 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. Comment
  SEINET10507677  Cynosurus echinatus Mary Susan Taylor 1979-9-28 Taylor 2200 A Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  CAS-BOT-BC114742  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte Gray Lodge Game Refuge, NW of Pennington Comment
  UC698630  Cyperus difformis P. B. Kennedy Aug 1921 Butte Comment
  CAS-BOT-BC114602  Cyperus eragrostis Ira L. Wiggins 1959-9-20 34640 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC28616  Cyperus eragrostis M. S. Taylor 1979-10-3 2223 Butte In Butte Creek Canyon, ca 1/4 mi upstream from bridge corssing Butte Creek at Helltown Rd, ca. 15 mi e of Chico. 243 Comment
  CHSC28661  Cyperus eragrostis J. D. Jokerst; M. S. Taylor 1979-10-13 393 Butte Junction of Griffith Gulch and Jordan Hill Rd. (Ponderosa Way on some maps). 701 Comment
  CHSC68384  Cyperus eragrostis L. P. Janeway 1988-6-29 2905 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  UC1100535  Cyperus eragrostis Herbert L. Mason 1945-9-19 12736 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  CAS-BOT-BC114596  Cyperus eragrostis Forman Taylor McLean 1921-9-25 s.n. Butte Weed in rice fields, Nelson. Comment
  SEINET10466872  Cyperus eragrostis Mary Susan Taylor 1979-10-3 Taylor 2223 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CAS-BOT-BC114381  Cyperus erythrorhizos Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC108132  Cyperus erythrorhizos Lowell Ahart 2011-10-29 17730 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  CHSC37103  Cyperus erythrorhizos L. Ahart 1982-9-12 3795 Butte On banks of North Honcut Creek, Peter Ahart Ranch, ca. 1 1/4 mi n and 3 mi e of Honcut. 50 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
  CHSC76012  Cyperus esculentus Lowell Ahart; Vernon H. Oswald 1999-8-13 8141 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
  CHSC94647  Cyperus flavescens Lowell Ahart 2006-9-28 13378 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  UCR146290  Cyperus flavicomus Ellen Dean, Et al. 2001-8-20 850 Butte Biggs UC Field Station, N of town of Biggs, west of jct. of Hwys 99 and 162, south side of Hamilton road, west of jct. with Riceton Hwqy, W side of RR tracks; along dirt road that is the extension of Hamilton rd. Comment
  CHSC38901  Cyperus niger Vernon Oswald 1983-6-7 649 Butte Upper Bidwell Park, Chico, on the north slope near the head of the stream which crosses Upper Park Rd. 0.5 mi e of the power lines. 198 Comment
  SD131026  Cyperus niger Lowell Ahart 1981-9-19 3181 Butte Sierra Nevada Mountains; Arch Rock Tunnel; Highway 70. 550 Comment
  CAS-BOT-BC113845  Cyperus niger var. capitatus John Thomas Howell 1959-9-20 34639 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC11932  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CHSC45155  Cyperus squarrosus Lowell Ahart 1974-7-1 504 Butte On the bottom 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. 39 Comment
  CHSC76425  Cyperus squarrosus Lowell Ahart 1999-10-28 8302 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
  POM111856  Cyperus squarrosus C. C. Bruce 1897-06 1882 Butte Little Chico Comment
  CAS-BOT-BC114202  Cyperus strigosus Lowell Ahart 1987-9-24 5900 Butte Along the North Fork of the Feather River, near the Poe Power House, 271 Comment
  CAS-BOT-BC114208  Cyperus strigosus Ira L. Wiggins 1928-9-9 3337 Butte Sandy Gulch Creek, 3 mi W of Chico. Comment
  CDA30199  Cyperus strigosus L. Ahart 2009-8-3 16256 Butte Along small drainages, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC76014  Cyperus strigosus Lowell Ahart; Vernon H. Oswald 1999-8-13 8140 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
  CHSC28412  Cystopteris fragilis M. S. Taylor 1979-9-28 2192 Butte Butte county line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  HSC66217  Cystopteris fragilis M. S. Taylor 1979-5-4 1988 Butte Millsap Bar Campground, 9 mi. NE of jct. of Millsap Bar Rd. with Brush Cr. Rd., 26 mi. NE of Oroville 1006 Comment
  JEPS120533  Cytisus scoparius L. P. Janeway 2013-5-9 11099 Butte Northern High Sierra Nevada. Plumas National Forest; along Oroville-Quincy Hwy 0.3 km north of Madrone Lake. Comment
  CAS-BOT-BC445503  Damasonium californicum Carl B. Wolf 1937-5-14 8672 Butte Sacramento Valley, 5 mi. NW. of Chico on Hamilton City Road. 45 Comment
  JEPS120989  Danthonia californica Lowell Ahart 2013-6-11 18801 Butte About 30 yards W of a wet meadow, about 40 yards N of Forbestown Road, about 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC36092  Danthonia californica var. americana R. A. Schlising; R. Preston 1982-7-16 4321 Butte NE part of county, E of Stirling City at Crane Valley. At edge of Balsam Creek. 1584 Comment
  CHSC6759  Danthonia unispicata V. Hagaman 1968-4-19 475 Butte Cherokee Village ca 200 yards E. of cemetary. Comment
  CHSC87576  Darmera peltata R. D. Fischer 2004-5-2 127 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located on margins of Big Chico Creek near bottom of 10 Mile House Road. 192 Comment
  CHSC23587  Delphinium depauperatum Nancy Mosman 1971-7-3 69 Butte In meadow along s side of Humboldt Road ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CAS-BOT-BC121511  Delphinium gracilentum Clarence Roy Quick 1941-6-7 41 -24 Butte Between Big Bar Mt., and Coyote Gap Comment
  CAS-BOT-BC8571  Delphinium hansenii John Thomas Howell 1962-6-16 37627 Butte Concow School north of Yankee Hill 533 Comment
  UC854134  Delphinium hansenii subsp. hansenii A. A. Heller 1938-5-28 15110 Butte slopes on Feather River Hwy 2 1/2 mi from Oroville Comment
  UCD95846  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
  CHSC84134  Delphinium hesperium subsp. pallescens Lowell Ahart 2003-5-14 10174 Butte About 150 yards west of the dredge piles along North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 60 Comment
  CAS-BOT-BC9921  Delphinium nudicaule C. C., Mrs. Bruce 1897-6-1 1915 Butte Butte Creek Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  CHSC56781  Delphinium patens M. S. Taylor 1981-4-28 3568 C Butte On s side of Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 670 Comment
  CHSC61214  Delphinium patens subsp. patens Vernon H. Oswald; Lowell Ahart 1993-3-24 5236 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 243 Comment
  CAS-BOT-BC121623  Delphinium patens subsp. patens Saichi Kawahara 1968-5-4 394 Butte James Ripley's property, Graham Road, Paradise 640 Comment
  CAS-BOT-BC17016  Delphinium variegatum Lowell Ahart 1980-4-21 2094 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC41524  Delphinium variegatum Richard J. Slama 1981-4-20 12 Butte Ca. 5 mi. e of Chico, ca. 3 mi. e of hwy 99 and hwy. 32, ca. 2 mi. e on Humboldt Rd. on n side. 99 Comment
  CHSC62827  Delphinium variegatum Ella Icard 1993-6-9 Butte Comment
  CHSC4570  Delphinium variegatum subsp. variegatum C. Glascock 1965-4-22 354 Butte In field at se corner of intersection of US 99E and Oroville-Chico Rd., ca. 1 mi. se of Chico. Comment
  CHSC75397  Delphinium variegatum subsp. variegatum Jennifer Slater 1997-4-6 4 Butte In vernal pool depression at the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CAS-BOT-BC17023  Delphinium variegatum subsp. variegatum A. A. Heller 1918-4-19 12987 Butte Valley oak belt on the banks of Pine creek 12 miles north of Chico Comment
  CHSC39260  Dendromecon rigida Lowell Ahart 1983-6-30 4188 Butte Along edge of dirt road, 3 miles south-east of Stirling City, on the west side of the West Branch of the Feather River. Section 10. 1100 Comment
  CHSC98328  Dendromecon rigida L. P. Janeway; B. Castro 2007-5-6 8974 Butte Northern High Sierra Nevada. Ridge top along a side road north off the road from Sawmill Peak to Flea Valley. 1.8 air km northeast of Sawmill Peak. Disturbed serpentine chaparral, rocky soil. 969 Comment
  UC726580  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia Comment
  SEINET10841534  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-4-14 Taylor 3534 Butte T22N R4E east central third of sec 12, Pulga SW quad. Serpentine ridge on W side of Ponderosa Way (Rim Rd), ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 3000 ft. 914 Comment
  CHSC46102  Deschampsia cespitosa J. D. Jokerst; R. A. Schlising 1982-10-7 1652 Butte In the bottom of a pond, the eastern-most in the chain of small ponds that occur on the bench S of and adjacent to Coon Hollow. 1706 Comment
  SEINET10835485  Deschampsia cespitosa A. Arthur Heller 1928-7-10 Heller 14621 Butte Wet meadows at Butte Meadows in the yellow pine belt. Comment
  CAS-BOT-BC192660  Deschampsia danthonioides A. A. Heller 1914-5-13 11399 Butte Between Durham and Nelson Comment
  CHSC112900  Deschampsia danthonioides B. Castro; Robin Carter 2011-4-29 1877 Butte Sacramento Valley. Between Hwy 99 and the Thermalito Afterbay levee, ca 0.6 mi S of jcn of Hwys 99 and 162W, ca 0.4 mi N of Hamilton Rd. 34 Comment
  HSC23363  Deschampsia danthonioides B. Wilson 1968-4-19 168 Butte 2 mi. S of Cherokee, Table Mountain. 549 Comment
  UCD62955  Deschampsia danthonioides L. Ahart 1977-4-29 1339 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42914  Deschampsia elongata Lowell Ahart 1987-7-17 5822 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
  CHSC95063  Dianthus armeria subsp. armeria L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-13 8689 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. East sloping edge of ridge top at 'Magalia Serpentine' about 25 m east of Coutelenc Road and 240 m north of Skyway. 712 Comment
  JEPS105645  Dianthus armeria subsp. armeria L. P. Janeway, B. Castro 2001-6-17 7184 Butte Northern High Sierra Nevada. 5.5 km (air) northeast of Brush Creek; 1.6 km south of Junction House, along Road 22N49 parallel to and 60-100 m west of Oroville-Quincy Hwy 1000 Comment
  CHSC635  Dicentra formosa R. Staley 1952-7-21 Butte 304 Comment
  LA47703  Dicentra formosa E. B. Copeland; 1929-7-22 364 Butte Jonesville 1500.0 Comment
  UC1362270  Dicentra formosa D. Parkinson 1964-4-1 Butte vicinity Monk's Store (Cohasset Stage); Cohasset Stage Comment
  CAS-BOT-BC402393  Dicentra formosa subsp. formosa Helen M. Edwards 1917-6-1 s.n. Butte DeSabla Comment
  SEINET10508816  Dichanthelium lanuginosum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4726 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  CAS-BOT-BC500799  Dichelostemma capitatum Lowell Ahart 1988-1-5 5979 Butte On the west side of the Poe Power House Road, about 1/2 mile north of the Poe Power House, about 2 miles south-east of Jarbo Gap. 396 Comment
  CHSC2092  Dichelostemma multiflorum N. Maxwell 1929-3-28 Butte Richardson Springs. 274 Comment
  CHSC23469  Dichelostemma multiflorum J. R. Lee 1974-4-22 3 Butte 25 yds n of Skyway and 6 mi e of Chico city limits. 152 Comment
  CAS-BOT-BC501085  Dichelostemma multiflorum A. A. Heller 1914-5-19 11421 Butte 8 miles north of Oroville Comment
  RSA256665  Dichelostemma multiflorum Kitsy Kelly 1974-4-20 16 Butte 300 yards south of the intersection of Pentz and Clark Roads 61 Comment
  SEINET10472607  Dichelostemma pulchellum Mary Susan Taylor 1982-5-2 Taylor 4396 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CDA42841  Dichondra donelliana L. Ahart 2011-6-5 17367 Butte Just north of the small wash, on the west 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
  CHSC12959  Digitalis purpurea K. R. Stern 1974-6-30 5770 Butte 11.5 mi ne of Stirling City on Bald Mt. rd. 1219 Comment
  CAS-BOT-BC209034  Digitaria sanguinalis A. A. Heller 1914-6-2 11476 Butte Hills 8 miles north of Oroville. Comment
  CHSC42912  Digitaria sanguinalis Lowell Ahart 1987-7-3 5763 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
  CHSC69736  Digitaria sanguinalis Lowell Ahart 1997-10-24 7938 Butte About 20 yards north of the South Fork of the Feather River and on the west side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  JEPS103329  Digitaria sanguinalis Lowell Ahart 2002-9-7 9926 Butte On the E side of Cherokee Road, N of the Thermalito Diversion Canal, on the W side of the water purification pond, ca 1 mile N of Oroville. 130 Comment
  CHSC6615  Dioscorea M. MacArthur 1968-6-17 305 Butte Location: SE yard of Building U, on Chico State College campus. 60 Comment
  CAS-BOT-BC153761  Diplacus angustatus J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC90147  Diplacus douglasii John Copeland 1980-3-8 17 Butte About 0.7 mi southeast of Cohasset Hwy. Comment
  CHSC44824  Diplacus grandiflorus R. Banchero 1980-5-7 145 Butte Near the jct of Bear Ranch Creek and Hwy 70, ca 0.3 mi SW of Arch Rock Tunnel. 609 Comment
  SEINET10570113  Diplacus grandiflorus Mary Susan Taylor 1981-5-5 Taylor 3599 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
  CAS-BOT-BC153206  Diplacus kelloggii L. P. Janeway 1993-7-1 4418 Butte North side of French Creek, 0.3 mi west of mouth of Ram Creek; along Rd 22N34 0.3 mi west of the low water crossing of French Creek 624 Comment
  CHSC3464  Diplacus kelloggii Roger Jaegel 1996-3-28 82 Butte Located on the top of table mountain three miles south of Cherokee. Comment
  SBBG26853  Diplacus layneae L. Constance 1941-5-28 2828 Butte south branch of the Feather River at Magalia 487 Comment
  CHSC42968  Diplacus torreyi Lowell Ahart 1987-7-3 5764 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC45985  Diplacus tricolor Lowell Ahart 1974-4-14 413 Butte Peter Ahart Ranch, about 2miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC38811  Distichlis spicata Vernon Oswald 1983-6-2 612 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. On the flood plain of the creek. 207 Comment
  CDA35059  Dittrichia graveolens L. P. Janeway 2010-11-23 10221 Butte Sacramento Valley; Oroville; gravelly flat on northern edge of the south levee of the Feather River, just east of Centennial Park. Comment
  CHSC109355  Dittrichia graveolens T. M. Hanson 2012-10-17 Butte Northern Sierra Nevada. On the west shoulder of Bardees Bar Road approximately 0.5 road km northeast of intersection of Bardees Bar and Big Bend Roads. 657 Comment
  UCD169282  Dittrichia graveolens Lowell Ahart 2007-10-30 14510 Butte About 7 (air) miles west of Oroville. About 500 yards south of Richvale East Road, about 100 yards north of Badger Creek Road, west side of Highway 99. 34 Comment
  CHSC95143  Dodecatheon alpinum R. D. Fischer 2005-6-5 856 Butte Chico Meadows. Northern Sierra Nevada, n. of Forest Ranch, 5 miles w. of Hwy 32 off Humboldt Road to Butte Meadows and ca. 3 miles n. to Chico Meadow (Camp Lassen, BSC) on Scout Road. Plant growing along eastern edge of Chico Meadow. 1280 Comment
  CHSC52454  Dodecatheon clevelandii subsp. patulum John Copeland 1980-1-19 3 Butte 50 ft NE of locked gate, 0.5 mi E of Meridian Rd, 1.5 mi N of hwy 99, ca 5 mi N of Chico. Comment
  HSC67921  Dodecatheon clevelandii subsp. patulum J. P. Smith 1973-3-22 5930 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC1395  Dodecatheon hendersonii J. Baynes 1929-4-20 Butte Paradise. 609 Comment
  CHSC19937  Dodecatheon hendersonii M. S. Taylor 1975-3-10 414 Butte Along paths on bluffs overlooking Butte Creek, ca. 1/4 mi sw of Covered Bridge, ca. 8 mi e of Chico. Comment
  UCSB63622  Dodecatheon hendersonii Skjelstad, L. 1975-4-20 Butte ca. 3.7 mi. S of Cherokee on the Cherokee Rd. Comment
  RSA31870  Dodecatheon hendersonii subsp. parvifolium A. A. Heller 1938-4-3 15011 Butte Common in moist red clay soil derived from disintefrated lave, Table Mountain, near Cherokee. Comment
  JEPS120766  Dopatrium junceum Lowell Ahart 2013-9-20 19058 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CHSC28146  Downingia bicornuta Robert A. Schlising; Ellen Sanders 1979-4-28 3379 Butte Near Richvale; vernal pools in grassland w of Hwy 99 and Thermalito Afterbay, 1/4 mi s of jct Hwy 99 and Hwy 162 to Oroville. Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  CHSC76937  Downingia insignis Margie Collins 1894-6-1 Butte Nord? Comment
  CHSC2377  Downingia ornatissima var. ornatissima R. Carter 1965-5-13 198 Butte Exact location unknown, but found somewhere along the Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  CAS-BOT-BC41344  Draba verna Gladys L. Smith 1976-4-8 s.n. Butte Table Mountain. Comment
  CHSC35006  Draba verna var. aestivalis R. E. Preston 1982-2-25 178 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
  CHSC35015  Draba verna var. aestivalis R. E. Preston 1982-3-20 192 Butte Along trail to Bear Ranch Creek falls, at Hwy 70, ca. 22 mi nne of Oroville. 463 Comment
  CHSC87199  Draba verna var. aestivalis Lowell Ahart 2004-3-26 10705 Butte On the south edge of the paved road, Hurleton Road, north of Forbestown Road, about 1/4 mile north of the Oak Grove Cemetery, about 2 miles southeast of Lake Wyandotte, about 10 miles east of Oroville. 502 Comment
  CHSC96841  Draperia systyla Lowell Ahart 2007-5-29 13932 Butte On the east side of Bald Rock Dome, along 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
  CHSC46489  Drosera rotundifolia Lowell Ahart 1984-7-19 4756 Butte About 1/2 mile east of Bald Mountain, about 5 air ... Field redacted by CHSC, contact the data manager for more information 1615 Comment
  JEPS120572  Drymocallis glandulosa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CHSC110346  Drymocallis glandulosa var. reflexa L. P. Janeway 2013-5-5 11097 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CAS-BOT-BC527354  Drymocallis glandulosa var. reflexa A. A. Heller 1914-5-18 11411 Butte West slope of the Sierra near Forest Ranch 731 Comment
  CHSC99571  Dryopteris arguta L. P. Janeway 2008-6-22 9419 Butte Cascade Range Foothills. Upper Bidwell Park, Chico (a large generally natural area); just below junction of Pine Trail and Guardians Trail. 396 Comment
  UCD80275  Dryopteris arguta CNPS SN Foothill Team 2005-3-30 SNFN 0070 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, in creek channel. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  SD233996  Dryopteris arguta Virginia Pinkus Ryder 1965-4-4 410 Butte Magalia, Feather River. 60 Comment
  CHSC3235  Duchesnea indica Susan Carrauthers 1966-4-20 115 Butte Flower bed on N. side of Life Science building of Chico State College. City of Chico. Comment
  CHSC5992  Duchesnea indica M. MacArthur 1968-6-12 162 Butte Near NW entrance to Life Science bld., Chico State College. 60 Comment
  UC933297  Dudleya cymosa C. F. Genasci Butte Richardson Springs Comment
  CHSC40900  Dysphania pumilio Lowell Ahart 1985-11-7 5229 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dap. 286 Comment
  CDA1978  Echinochloa colona L. Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. Comment
  UCD18742  Echinochloa colona Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 35 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CHSC108135  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 Butte On the bare sides of a ditch, on the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. 27 Comment
  JEPS120036  Echinochloa crus-galli Lowell Ahart 2012-9-28 18463 Butte On the north side of Big Chico Creek, about 150 yards east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. Comment
  JEPS120763  Echinochloa crus-galli Lowell Ahart 2013-9-20 19055 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  SEINET10934938  Echinochloa crus-galli Lowell Ahart 1990-9-30 Ahart 6604 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SE/S17. 229 Comment
  CDA2000  Echinochloa oryzoides G. D. Barbe, T. C. Fuller 1977-9-2 2336 Butte Rice Experiment Station, Biggs. 0 Comment
  CHSC115333  Elatine Lowell Ahart 2015-4-24 20071 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC82228  Elatine ambigua Lowell Ahart 2002-4-10 9476 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC84010  Elatine ambigua Lowell Ahart 2003-6-19 10291 Butte Bottom of a wash, Peter Ahart Ranch, about 100 yards east of Palermo Honcut Highway, about 1 3/4 miles north of Honcut, about 12 miles south of Oroville. 28 Comment
  JEPS104282  Elatine ambigua Lowell Ahart 2003-6-23 10299 Butte On the bottom of a wash, Peter Ahart Ranch, ca 100 yd e of Palermo Honcut Highway, ca 2 1/4 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  CHSC80523  Elatine heterandra Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET10447967  Elatine rubella Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4200 Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC104846  Eleocharis acicularis var. acicularis Lowell Ahart 2010-6-9 16776 Butte 10 yards north of the poor dirt road, about 100 yards east of the fence, about 150 yards east of where you park, east of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 384 Comment
  CHSC78181  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-5 8447 Butte On the north margin of a large wash, about 100 yards west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC78286  Eleocharis acicularis var. occidentalis Lowell Ahart 2000-6-17 8487 Butte 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
  CHSC55611  Eleocharis atropurpurea L. P. Janeway 1986-9-20 1886 Butte Inside the bend in the road at the junction of Chico Butte City Hwy and Road 48. 28 Comment
  CHSC97253  Eleocharis atropurpurea Lowell Ahart 2007-8-19 14489 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS98468  Eleocharis bella Lowell Ahart 2000-9-15 8689 Butte 2 mi SE of Ordbend (N of a large pond on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 12 air miles SW of Chico) 32 Comment
  UC1609054  Eleocharis bella Lowell Ahart 1993-7-13 7065 Butte 12 mi S of Oroville (bottom of a deep wash, Peter Ahart Ranch, 1 1/2 mi N and 1 mi E of Honcut) 36 Comment
  CHSC110240  Eleocharis bolanderi L. P. Janeway 2012-6-2 10833 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 air km east of the top. 701 Comment
  CHSC78298  Eleocharis bolanderi Lowell Ahart 2000-6-29 8541 Butte Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC58283  Eleocharis engelmannii Lowell Ahart 1992-5-23 6774 Butte Fallow rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC78192  Eleocharis engelmannii Lowell Ahart 2000-6-4 8445 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  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
  JEPS94769  Eleocharis macrostachya Lowell Ahart 1998-7-18 8038 Butte about 7 air mi n of Oroville (about 1/2 mi n of the ione oak tree, about 1/2 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  SEINET10466798  Eleocharis macrostachya Mary Susan Taylor 1978-9-8 Taylor 1878 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  SEINET9084724  Eleocharis obtusa var. obtusa L. Ahart 2000-9-4 8685 Butte E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 air miles SW of Chico. 32 Comment
  SEINET11749733  Eleocharis ovata Unknown 1983-1 4027 Butte Peter Ahart Ranch, 2.5 mi NE of Honcut 50 Comment
  CHSC78194  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte On the wet side of a large wash, northeast of the pond, about 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 54 Comment
  SEINET11750485  Eleocharis pachycarpa Unknown 1985-1 5161 Butte Peter Ahart Ranch, ca 1 mi N & 3 mi E of Honcut, ca 12 mi S of Oroville,W side of North Honcut Creek 46 Comment
  CAS-BOT-BC113213  Eleocharis parishii Copeland 1903-5-30 3280 Butte Chico Comment
  SEINET10587098  Eleocharis quadrangulata Vernon H. Oswald, Lowell Ahart; Barbara J. Ertter 1998-10-22 Oswald 9676 Butte T19N R3E Sect. 27. Pond on east side of Larkin Rd., just south of the boundary of the Oroville WA at the clay pits, ca. 1 mi south of the Oroville Municipal Airport. 41 Comment
  CHSC78000  Eleocharis quinqueflora Lowell Ahart 2000-5-10 8333 Butte On the north margin of a large wash, just west of the road crossing, Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 36 Comment
  CHSC78308  Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 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
  JEPS98472  Eleocharis quinqueflora Lowell Ahart 2000-5-30 8411 Butte 2 mi S of Paradise (about 1/4 mi NE of Kunkle Reservoir, E of the Pentz Magalia Road) 548 Comment
  SEINET7587014 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-23 8386 Butte About 1/8 mile north of La Porte Road, about 1/2 mile southeast of the Honcut Cemetery, about 4 miles northeast of Honcut, about 13 miles (air) southeast of Oroville. 55 Comment
  CHSC88243  Elodea canadensis Lowell Ahart 2004-7-11 11225 Butte On the southeast shore of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  CHSC98334  Elymus caput-medusae L. P. Janeway; B. Castro 2007-5-19 8979 Butte Cascade Range Foothills. Bottom of un-named drainage on southesast side of Neal Road, 2.9 air km northeast of Hwy 99, approximately under the high power lines. On the lowest terrace above the dry dreek; dry hard clay soil, Tuscan Mudflow outcrops (volcanic) above. 91 Comment
  CHSC44175  Elymus glaucus subsp. glaucus V. Oswald; Lowell Ahart 1988-7-29 3642 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC69061  Elymus glaucus subsp. glaucus Lowell Ahart 1997-8-1 7783 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
  JEPS116073  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15793 Butte On dry soil, about 50 yards south of the fence and about 120 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico 269 Comment
  CHSC45420  Enemion occidentale Lowell Ahart 1973-2-28 156 Butte Along the south side of Swedes Flat Road, about 1 mile east of the Oroville Bangor Highway, north-east of Bangor. 304 Comment
  CAS-BOT-BC410232  Enemion occidentale Flower Shaw 1926-4-24 s.n. Butte Los Verjils Comment
  UCD23087  Ephedra gerardiana Gerald L. Vertrees 1960-7-8 s.n. Butte Plant Introduction Station, Chico. Comment
  SEINET10453215  Epilobium adenocaulon var. holosericeum Mary Susan Taylor 1977-6-25 Taylor 1375 Butte Foothill Woodland-Yellow Pine Forest transition zone, on Ponderosa Way betwe en Cohasset and Forest Ranch. 610 Comment
  RSA458688  Epilobium brevistylum Louis C. Wheeler 1928-8-21 413 Butte Neighborhood of Jonesville; swamp near head of Willow Creek 1524 Comment
  SEINET10453197  Epilobium brevistylum Lowell Ahart 1983-8-16 Ahart 4296 Butte T26N R4E nw section 28. Along a small stream that flows into Butte Creek, ca. 1 mi east of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC26296  Epilobium canum subsp. latifolium J. P. Kroessig 1977-8-1 22 Butte E margin of Hwy 32, ca 6 km wsw of Butte Meadows. Roadside. 1098 Comment
  CHSC69047  Epilobium canum subsp. latifolium Lowell Ahart 1997-8-1 7775 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
  JEPS124102  Epilobium densiflorum Lowell Ahart 2015-6-6 20203 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  SEINET10453012  Epilobium foliosum Lowell Ahart, Peter Ahart 1983-6-30 Ahart 4185 Butte T23N R4E ne sec 10. On east side of West Branch of Feather River, ca. 5 mi s of Stirling City. Yellow Pine Forest; 1150 m. 1150 Comment
  CHSC70336  Epilobium glaberrimum R. A. Schlising; R. Banchero 1980-7-11 3875 Butte E part of county on Oroville-Quincy Highway, 1.4 miles S of Merrimac and 4.2 miles N of Mountain House; in roadside ditch. Comment
  CHSC26743  Epilobium glaberrimum subsp. glaberrimum M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1468 Butte In meadows along Julie's Creek, between Old Humboldt Rd and Butte Creek, ca. 3.4 mi e of Butte Meadows. 1341 Comment
  UC204450  Epilobium glaberrimum subsp. glaberrimum A. A. Heller 1914-7-23 11601 Butte Chico Meadows 1219 Comment
  CHSC11780  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. At 'the Summit. 2000 Comment
  UCD106785  Epilobium obcordatum E. B. Copeland 1931-7-13 664 Butte Jonesville. 2000 Comment
  SEINET10453022  Epilobium obcordatum Mary Susan Taylor 1980-8-2 Taylor 3201 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  CHSC64199  Epilobium oregonense S. C. Morey 1983-8-3 698 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC116208  Epilobium torreyi Lowell Ahart 2015-7-4 20268 Butte On both sides of the dirt road, branch road to a meadow west of road to Jackson Ranch, about 500 yards north of the County Road, about one mile west of the intersection of Lumpkin Ridge Road, road to Cascade or Fall River and County Road, about 7 (air) miles northeast of Feather Falls. 1252 Comment
  CHSC94066  Epilobium torreyi R. Fischer 2005-6-12 743 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made near the junction of Guardian Trail on the dry roadbed, an opening in a brush/oak woodland. 219 Comment
  JEPS119904  Epilobium torreyi Lowell Ahart 2012-5-31 18125 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  CHSC28508  Equisetum arvense M. S. Taylor; J. D. Jokerst 1979-10-13 2251 Butte By creek crossing Jordan Hill Rd (Ponderosa Way on some maps), ca. 0.8 mi n of its jct with Concow Rd, ca. 5 mi e of Paradise. 426 Comment
  CHSC9134  Equisetum arvense Terril Wolt 1970-3-10 6 Butte Ca. 500 ft. W. of public boat launch on River Rd., 8 mi. W. of Chico. Comment
  CHSC51288  Eragrostis hypnoides Lowell Ahart 1990-9-30 6599 Butte Along the edges of Canyon Creek, below the high water line of Lake Oroville, below the Canyon Creek Bridge across Lake Oroville. 219 Comment
  CHSC65187  Eragrostis hypnoides Lowell Ahart 1995-8-19 7614 Butte East side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles south-east of Oroville. 36 Comment
  CDA31778  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  JEPS106155  Eragrostis pectinacea var. pectinacea Lowell Ahart 2004-9-14 11402 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo 57 Comment
  CHSC83171  Eragrostis pilosa var. pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Meadow along road. Comment
  CHSC44115  Eremogone cliftonii L. P. Janeway; R. A. Schlising 1987-6-26 2307 Butte Above Camp Cr 2.5 mi E of Granite Ridge along rd to Lynch and Logue Mdws. 1365 Comment
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Jul 8 2014
  UC699659  Ericameria nauseosa var. speciosa E. B. Copeland Butte Butte Meadows Butte Comment
  CHSC38340  Erigeron canadensis Vernon Oswald 1983-9-10 1038 Butte Upper Bidwell Park, Chico, about 300 ft w of Day Camp. 91 Comment
  RSA774145  Erigeron lassenianus L. Ahart 2010-9-21 17227 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC43178  Erigeron lassenianus var. lassenianus Robert Banchero 1981-6-20 523 Butte Ca 1 mi w of Jones meadow. 1810 Comment
  POM193096  Erigeron peregrinus subsp. callianthemus E. B. Copeland 1930-7-12 491 Butte Above Jonesville 1800 Comment
  CHSC61906  Erigeron petrophilus var. sierrensis M. S. Taylor 1981-6-19 3962 Butte N side of Feather River Hwy 70, at nw end of Pulga bridge and along Pulga Rd, ca. 20 mi ne of Oroville. Comment
  CHSC3515  Erigeron philadelphicus John Francis 1966-4-6 105 Butte 1.5 miles E. of covered bridge (Honey Run). Beside road. Comment
  CDA28201  Eriochloa acuminata var. acuminata L. Ahart 2004-9-14 11400 Butte On the east side of Palermo Honcut Highway, about 20 feet south of Palermo Road, east part of Palermo. Comment
  JEPS106152  Eriochloa acuminata var. acuminata Lowell Ahart 2004-8-30 11397 Butte In a young peach orchard, 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
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  UCD119298  Eriodictyon californicum P. Thompson 1996-4-26 33 Butte Hwy 70. 1800 Comment
  CHSC45365  Eriogonum lobbii Vernon Oswald 1985-5-28 1784 Butte Little Bald Rock near Bean Creek Rd. 0.3 mi e of Bald Rock Rd. Growing in sandy soil on an open granitic outcrop. 1011 Comment
  CAS-BOT-BC263200  Eriogonum marifolium var. marifolium A. A. Heller 1928-7-25 14700 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  CHSC33279  Eriogonum marifolium var. marifolium R. A. Schlising; R. Banchero 1980-7-31 3949 Butte N part of county, on andesite outcrops and flats N of Snow Mt. 1950 Comment
  POM319187  Eriogonum pedunculatum Patricia Wilder 1971-6-23 5181 Butte Magalia, N of Paradise, Coutelenc Road, just N of jct with Skyway Road, along railroad track West slope of Sierra Nevada, W branch Feather River Drainage Area. 732 Comment
  CAS-BOT-BC253051  Eriogonum roseum Lowell Ahart 1989-7-4 6366 Butte On and around graves in the Cementery about 1/2 mile south of Oregon Gulch Road about 1 mile west of Rocky Point, about 10 miles east and 3 miles north of Oroville 335 Comment
  UC1594558  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  CHSC40784  Eriogonum umbellatum var. ahartii Lowell Ahart 1985-8-15 5164 Butte 50 yards south of the road to the Forbestown Res., about 2 1/2 miles northeast of Forbestown. 883 Comment
  CHSC51894  Eriogonum umbellatum var. ahartii L. P. Janeway 1987-6-20 2267 Butte Top of Lumpkin Ridge 0.6 mi S of the Feather Falls-Lumpkin Ridge Rd. 1249 Comment
  SEINET5332483 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highwya 70 in Feather River Canon at the turnoff to Pulga. Comment
  SEINET782824 Image available Eriogonum umbellatum var. ahartii J. L. Reveal 1975-8-24 3977 Butte Along California Highway 70 in Feather River Canyon at the turnoff to Pulga Comment
  CHSC36094  Eriogonum umbellatum var. modocense R. A. Schlising; K. Tarp, F. J. Fuller 1982-7-18 4326 Butte N Butte County NE of Philbrook Res., along crest leading to Snow Mountain Peak. 2103 Comment
  CHSC30077  Eriogonum ursinum var. ursinum R. A. Schlising; D. Ikeda, R. Banchero 1980-6-26 3784 Butte Along Humboldt Rd., 1.9 mi NE of jct with Hwy 32 at Lomo; on open N and W-facing cliffs. Comment
  CHSC42490  Eriogonum ursinum var. ursinum Lowell Ahart 1987-5-27 5717 Butte Road cut along Poe Power House Road, about 3/4 mile north-west of the Poe Power House, about 1 1/2 miles south-east of Jarbo Gap. 365 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
  CDA20457  Eriophyllum lanatum var. croceum B. Smith August 1996 s.n. Butte Plumas National Forest; 1.5 mi S of Feather Falls along Owl Creek. 0 Comment
  CHSC109576  Eriophyllum lanatum var. grandiflorum L. P. Janeway 2012-6-7 10856 Butte Northern High Sierra Nevada. Southwestern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines 895 Comment
  CHSC664  Erodium botrys P. Delaplane 1965-3-20 25 Butte On open fields on W. side of Cactus Ave at intersection of Manzanita, Chico. 30 Comment
  CHSC101084  Erodium brachycarpum Lowell Ahart; John Dittes 2009-3-20 15509 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC29992  Erodium brachycarpum L. Ahart 1980-4-7 Butte Along Swedes Flat Road, near Bangor, on damp granitic soil near the bridge across Rocky Honcut Creek. 320 Comment
  SEINET10495107  Erodium cicutarium Mary Susan Taylor 1973-1 Taylor 38 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  JEPS115288  Erodium moschatum Lowell Ahart 2009-4-3 15529 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  UCR237319  Erodium moschatum George K. Helmkamp, E. A. Helmkamp 2012-4-14 18731 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  UC203586  Eruca vesicaria subsp. sativa A. A. Heller 1914-7-11 11560 Butte 6 mi from Chico (Chico-Hamilton road) Comment
  CHSC23530  Eryngium castrense M. S. Taylor 1976-3-23 1033 Butte Ca. 10 ft s of corner of Broyles Rd and Hwy 99, ca. 11 mi n of Chico. 60 Comment
  CHSC8584  Erythranthe bicolor B. Jackson 1968-5-5 26 Butte Taken ca. 1 mi S. of Cohasset Grammar School on E. side of Cohasset Rd. along small, slow moving stream area unfenced. 609 Comment
  SEINET8245391  Erythranthe bicolor A. A. Heller 1914-5-17 11338 Butte none. 732 Comment
  CHSC43760  Erythranthe breweri Vernon Oswald 1983-8-4 956 Butte Near Humbolt Rd. 3.5 mi n-e of Butte Meadows. 1414 Comment
  CHSC42717  Erythranthe cardinalis Lowell Ahart 1987-6-9 5723 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC48997  Erythranthe floribunda Vernon Oswald 1984-6-3 1251 Butte Sacramento River, ca. 0.5 mi downstream from the mouth of Stony Creek. 39 Comment
  CHSC105774  Erythranthe glaucescens Christopher T. Ivey 2010-6-7 377 Butte Honey Run Road, 7.7 km NE of bridge crossing Butte Creek, in roadside ditch. 427 Comment
  CHSC110631  Erythranthe glaucescens Christopher T. Ivey; Jenn Coughlan 2013-5-17 383 Butte Centerville Rd. about 1 km N of Honey Run bridge. Roadside ditch on W side of road. 115 Comment
  CHSC43164  Erythranthe glaucescens R. A. Schlising 1980-6-30 3803 Butte Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. Carpenter Ridge. Comment
  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
  CHSC44822  Erythranthe glaucescens R. Banchero 1980-4-26 130 Butte Along the Cohasset Hwy 4.9 mi NE of its jct with Keefer Rd, 1.3 mi SW of the town of Cohasset. 445 Comment
  SEINET14214297  Erythranthe glaucescens Harris, Reese 1963-4-16 s.n. Butte Chico. 122 Comment
  CAS-BOT-BC153865  Erythranthe glaucescens Mrs. C. C. Bruce 1897-5-1 2104 Butte Butte Creek & Iron [canon] Canyon Comment
  CHSC113285  Erythranthe guttata Lowell Ahart 2014-5-13 19465 Butte Below the high water line of Lake Oroville, about 200 yards southwest of the poor parking area, on the east side of McCabe Creek, about 11 miles (air) east of Oroville. 244 Comment
  CHSC84222  Erythranthe guttata Lowell Ahart 2003-7-16 10410 Butte On the south side of North Honcut Creek, about 3/4 mile north and 2 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 31 Comment
  CHSC94605  Erythranthe guttata Lowell Ahart 2006-9-13 13322 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC98995  Erythranthe guttata Lowell Ahart 2008-5-21 14774 Butte Damp to dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  SD4665  Erythranthe moschata E. B. Copeland 1929-7-13 463 Butte Jonesville, in half shady glades 1550 Comment
  CHSC44741  Erythranthe nasuta R. Banchero 1980-4-7 92 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with the Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and the Hurleton-Swedes Flats Rd. 373 Comment
  CHSC11894  Erythranthe primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville. 1500 Comment
  CHSC44767  Erythranthe primuloides R. Banchero 1980-7-7 286 Butte Along Quartz Creek Rd 0.3 mi S of the Fall River campground, ca 6 mi NE of the town of Feather Falls. 1036 Comment
  SEINET10469660  Erythronium cliftonii Mary Susan Taylor, L. Hanson 1981-4-2 Taylor 3473 Butte T20N R6E se sec 15; Forbestown quad. S side of Rd 20N67A (old RR bed) at curve in rd, ca. 1/10 mi s of its jct with 20N67, ca. 1/4 mi nw of Lumpkin Rd, ca. 1.5 mi w of Feather Falls. Yellow Pine Forest opening; 2500 ft. 762 Comment
  SEINET10872534  Erythronium cliftonii Mary Susan Taylor 1980-3-8 Taylor 2378 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  CHSC36220  Erythronium multiscapideum Lowell Ahart 1982-4-8 3270 Butte Near North Honcut Creek, about 1 1/4 miles north and 3 miles east of Honcut. 50 Comment
  CHSC79622  Erythronium multiscapideum G. F. Hrusa 1997-5-1 13720 Butte Sierra Nevada. NE side of upper end of Paradise Lake, where last tributaries from E enter Lake. [Lat./Long. on label is '39 52 N; 121 35 W']. 810 Comment
  CHSC87535  Erythronium multiscapideum R. D. Fischer 2004-3-22 91 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and parking area for 10 Mile House Road 300 ft down rd. 457 Comment
  UC1731208  Erythronium multiscapideum Dean W. Taylor 1997-3-13 15914 Butte Magalia; summit serpentine hill directly east of town 731 Comment
  CAS-BOT-BC504535  Erythronium multiscapideum John Thomas Howell; Gordon H. True 1969-4-9 45492 Butte Magalia 701 Comment
  SEINET10469550  Erythronium multiscapideum Mary Susan Taylor 1981-4-10 Taylor 3526 Butte T22N R4E sw sec 12, Pulga SW quad. 8 side of private rd. ca. 1/8 mi E of 4 mi N of Jarbo Gap on Hwy 70, ca. 19 air mi N of Oroville. Yellow Pine Forest; 3000 ft. 914 Comment
  SEINET3992253  Erythronium multiscapideum Rimo Bacigalupi, G. T. Robbins, F. Chisaki 1956-4-19 5601 Butte 1/2 mile north of Magalia 732 Comment
  SEINET7030126  Erythronium multiscapideum M. S. Taylor, D. Hemphill 1981-3-18 3422 Butte Paradise Quadrangle. From bridge crossing West Branch Feather River, calculated 0.5 mile east and south along Ponderosa Way (Jordan Hill Road) and both banks of the river. in serpentine; calculated 1 mile northeast of Magalia. Elevation calculated 1600 to 1900 feet. [EX MO Herbarium Accession No. 3834966]. Comment
  CAS-BOT-BC402640  Eschscholzia caespitosa A. A. Heller 1938-4-23 15052 Butte Just west of the summit between the West Branch and the North Fork of the Feather River on Highway #24 Comment
  CHSC27672  Eschscholzia lobbii Robert A. Schlising 1978-4-23 3224 Butte S of Cohasset along Cohasset Road, 4.9 mi NE of jct with Richardson Springs Road, 4.9 mi NE of jct with Richardson Springs Road and 5.2 mi NE crossing of Mud Creek. Comment
  POM125743  Eschscholzia lobbii C. C. Bruce 1897-04 2027 Butte Near Chico Comment
  RSA144838  Eschscholzia lobbii W. R. Ernst 1958-3-27 220 Butte Along the Skyway to Paradise (east of Chico) Comment
  UCD95383  Eschscholzia lobbii David E. Young 1983-6-6 13 Butte North Table Mountain, 0.4 km west of Cherokee Road, 0.5 km SW of Oregon Gulch Road, and 10 km north of Oroville, 7 km E of Hwy 70. 390 Comment
  CHSC3644  Eucalyptus tereticornis Alice L. Stoll 1966-3-5 47 Butte Lower Bidwell Park between freeway and Manzanita Ave., Chico, along roadside. Comment
  SEINET10973051  Euphorbia maculata Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5111 Butte About 1/4 mile north-west of the Ponderosa Dam across the South Fork of the Feather River. Comment
  SBBG128795  Euthamia occidentalis L. Ahart 2012-10-28 18531 Butte N side of Big Chico Crk, S of Table 34, W of Cedar Grove, Lower Bidwell Park, Chico 68 Comment
  SEINET10904941  Euthamia occidentalis Mary Susan Taylor 1979-10-2 Taylor 2215 Butte Sacramento River Chico Landing and park, off River Road near the washout, ca. 5 mi W of Chico; Riparian Woodland. 30 Comment
  JEPS121967  Fallopia convolvulus Lowell Ahart 2014-7-7 19558 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. Comment
  CHSC61537  Festuca arundinacea Lowell Ahart 1993-6-16 6968 Butte Along a dirt road, south-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  CHSC40452  Festuca californica Lowell Ahart 1985-5-15 4998 Butte East of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CDA13878  Festuca occidentalis G. F. Hrusa, T. D. Wilfred 1997-5-7 13736 Butte Sierra Nevada; Bottom of Little Butte Creek canyon above Magalia Reservioir, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC101461  Festuca rubra L. P. Janeway; Sarah Starkey 2009-7-13 9858 Butte Northern High Sierra Nevada. Northern end of Rocky Ridge, just northwest side of Rim Road (Ponderosa Way) 0.8 km southeast of Concow Road. 978 Comment
  CAS-BOT-BC278628  Festuca subulata Lowell Ahart 1982-9-13 3812 Butte Along the banks of Pinkard Creek, Creek, ca. 1/8 mi. N of the Lost Creek Res. Dam, ca. 2.15 mi. NW of Strawberry Balley 1100 Comment
  CAS-BOT-BC278631  Festuca subulata Lowell Ahart 1988-7-31 6148 Butte On the east side of the West Branch of the Feather River, north of the bridge, about 4 road miles north of Stirling City 914 Comment
  CHSC99566  Festuca subuliflora L. P. Janeway 2008-6-22 9432 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek (a tributary to North Fork Feather River); 2.7 air km east of Pulga Bridge (Hwy 70) over North Fork Feather River. On moist banks. 823 Comment
  CAS-BOT-BC77692  Ficus carica John Thomas Howell 1959-9-20 34702 Butte Feather River Highway 5.5 miles below West Branch bridge Comment
  CDA5502  Foeniculum vulgare L. Ahart 2001-6-13 8816 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. Comment
  CHSC48843  Fragaria vesca Vernon Oswald 1987-6-2 2950 Butte Forbestown Reservoir Rd. where it crosses the first drainage w of Woodleaf and Oroleve Creeks. On the edge of a stream. 792 Comment
  CAS-BOT-BC437083  Fragaria virginiana subsp. platypetala E. B. Copeland 1929-7-16 373 Butte Jonesville 1550 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
  CAS-BOT-BC223385  Fraxinus dipetala A. A. Heller 1914-5-18 11405 Butte Between Chico and Forest Ranch, 14 miles from Chico Comment
  CHSC87431  Fraxinus dipetala R. D. Fischer 2004-3-22 94 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected on Guardian Trail, 400 ft south of its junction with 10 Mile House Road. Along trail, and along 10 Mile House Road. 403 Comment
  JEPS119531  Fraxinus dipetala Lowell Ahart 2012-4-20 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CAS-BOT-BC223473  Fraxinus latifolia A. A. Heller 1913-9-12 11133 Butte Chico, on Big Chico Creek Comment
  JEPS108969  Fraxinus latifolia Lowell Ahart 2006-9-11 13288 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
  JEPS115585  Fraxinus latifolia Lowell Ahart 2009-5-23 15749 Butte On the east edge of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  RSA769899  Fraxinus latifolia George K. Helmkamp, E. A. Helmkamp 2009-9-5 15570 Butte 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
  CAS-BOT-BC212962  Fremontodendron californicum Frances Brown 1935-5-1 s.n. Butte Near Durham. Comment
  CHSC23539  Fritillaria eastwoodiae M. S. Taylor 1976-3-16 1028 Butte Ca. 25 ft s of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  SEINET10469654  Fritillaria eastwoodiae Mary Susan Taylor 1979-3-20 Taylor 1947 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  RSA32885  Fritillaria recurva A. A. Heller 1939-4-26 15386 Butte Near Stirling Comment
  SEINET10935621  Galium aparine Mary Susan Taylor 1975-8-31 Taylor 887 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
  JEPS121970  Galium bolanderi Lowell Ahart 2014-7-7 19569 Butte Along the east side of the Skyway, about one-mile south of Inskip. Comment
  CHSC36513  Galium divaricatum L. Ahart 1982-5-29 3448 Butte N of the Peter Ahart Ranch, ca. 2.5 mi N and 1 mi E of Honcut. 50 Comment
  CAS-BOT-BC26139  Galium grayanum A. A. Heller 1914-8-7 11668 Butte Summit back of Jonesville, on the north side of the pass. 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
  CHSC30902  Galium porrigens var. tenue M. S. Taylor 1980-3-1 2349 Butte On SE facing bluffs overlooking Hamlin Canyon, ca. 1/4 mi SE of Elliot Spring House on Neal Rd, ca 2 mi SW of Paradise. 301 Comment
  JEPS26674  Galium porrigens var. tenue P. C. Hutchison 1961-6-9 2093 Butte 7 mi s Jarbos Gap (along US Alt. 40); canyon of the north fork of the Feather River Comment
  SEINET10836841  Galium triflorum Mary Susan Taylor 1979-10-5 Taylor 2237 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
  CAS-BOT-BC303385  Gamochaeta ustulata Lowell Ahart 1984-6-8 4660 Butte Along Ponderosa Way, about 1/8 mile W of the Ponderosa Dam, about 2 miles NW of Forbestown 370 Comment
  CAS-BOT-BC282600  Gastridium phleoides Lowell Ahart 1985-6-17 s.n. Butte Near teh dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  CHSC40454  Gastridium phleoides Lowell Ahart 1985-6-17 5050 Butte Near the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC99008  Gastridium phleoides Lowell Ahart 2008-5-21 14780 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  JEPS103281  Gastridium ventricosum Lowell Ahart 2002-5-7 9639 Butte High banks of a pond, at the beginning of a SE 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
  CHSC73415  Gaultheria ovatifolia B. Castro; L. Gehrung 1995-6-20 577 Butte Ca 4 air mi NE of Feather Falls, towards northeastern end of Watson Ridge, in N-trending ravine S of sharp bend in USFS Rd 22N24. 1173 Comment
  CHSC84437  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, about 100 yards northeast of the buildings in Butte Creek House Meadow, about 3 miles northeast of Snag Lake, about 7 miles (air) east of Butte Meadows. 1771 Comment
  POM183996  Gayophytum diffusum subsp. parviflorum H. F. Copeland 1932-8-19 s.n. Butte Jonesville, about the Lily Pond 1700 Comment
  SEINET12193690  Gayophytum diffusum subsp. parviflorum R. A. Schlising 1981-1 4164 Butte NE part of the county, SE of Snag Lake on Snow Mt., top of Snow Mt. Ridge 2073 Comment
  CHSC62475  Gayophytum heterozygum L. P. Janeway 1993-7-31 4486 Butte Plumas National Forest, La Porte Ranger District. Along Cascade Road 0.6 mi north of Fall River crossing; between Mineral Springs Ravine and Dark Canyon. West-southwest facing road cutbank. 1066 Comment
  UC398937  Gayophytum heterozygum E. B. Copeland 1929-7-29 387 Butte Butte Creek Jonesville 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
  CHSC48451  Gentianella amarella subsp. acuta Vernon Oswald; Lowell Ahart 1987-8-5 3191 Butte Scotts John Creek 0.6 mi n of the road connecting Humboldt and Humbug roads. 1780 Comment
  UC600680  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville Butte Creek (meadow by Butte Creek) 1500 Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  CHSC672  Geranium carolinianum V. Holt 1935-3-30 Butte Chico Creek ridge. 365 Comment
  RSA0028177  Geranium carolinianum L. Ahart 2012-4-30 17945 Butte South side of the path near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park. 81 Comment
  CHSC113300  Geranium dissectum Lowell Ahart 2014-4-9 19341 Butte Bottom of a drying pond, about 100 yards west of the parking area, west end of West Liberty Road, about one mile (air) south of Colusa Highway, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC52341  Geranium molle Paulenn Broyles 1987-5-21 1047 Butte The Nature Conservancy Vina Plains Preserve. Wurlitzer Addition. At fence roadway NW of Wurlitzer buildings. Comment
  JEPS115328  Geranium molle Lowell Ahart 2009-4-17 15546 Butte On the south slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico 373 Comment
  SEINET10495127  Geranium molle Mary Susan Taylor 1980-5-27 Taylor 2644 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
  CHSC48845  Geum macrophyllum Vernon Oswald 1984-6-7 1268 Butte Calif. Hwy 32, 1.2 mi n of Chico Creek Bridge. On the edge of a spring. 1109 Comment
  JEPS30785  Gilia capitata subsp. capitata Lincoln Constance 1941-5-28 2827 Butte South Branch Feather River at Magalia (Sierra Nevada foothills); , South Branch Feather River 487 Comment
  CHSC4012  Gilia capitata subsp. pedemontana D. B. Joley 1967-4-21 26 Butte Ca. 5 feet from Humbug Rd. and ca. 2.2 miles e of Skyway and Humbug Rd. corner, Chico. 60 Comment
  CHSC42089  Gilia capitata subsp. pedemontana Rusti Gammon 1986-4-18 19 Butte Ca. 5 mi s of Centerville, ca. 20 yds w of Butte Creek above w bank. 91 Comment
  UC196265  Gilia tricolor subsp. tricolor A. A. Heller 1914-3-26 11228 Butte canyon of Chico Creek Comment
  CHSC82427  Githopsis specularioides Lowell Ahart 2002-5-7 9616 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
  CHSC116320  Glinus lotoides Lowell Ahart 2015-10-26 20592 Butte Strand of Lake Oroville, on the west side of the West Branch of the Feather River, about 1 mile (air) southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 207 Comment
  RSA126641  Glyceria striata P. L. Johannsen 1936-7-17 939 Butte Butte County: 3 miles SE of Butte Meadows, Paynes Creek. 1555 Comment
  CAS-BOT-BC302472  Gnaphalium palustre E. B. Copeland 1931-7-18 s.n. Butte Jonesville 1700 Comment
  CAS-BOT-BC302478  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
  CHSC60953  Gnaphalium palustre Lowell Ahart 1993-7-6 7048 Butte On the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC90949  Gnaphalium palustre Lowell Ahart 2005-4-14 11714 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  UCD80064  Gnaphalium palustre CNPS SN Foothill Team 2005-5-4 SNFN 0199 b Butte City of Chico, Bidwell Ranch, about 1.33 miles northwest of the end of Wildwood Road. 88 Comment
  UCD138957  Goodyera oblongifolia L. Ahart 1982-9-13 3805 Butte ca. 0.2 mile north of Lost Creek Reservoir Dam, ca., 2.2 miles northwest of Strawberry Valley. 1100 Comment
  UC1562348  Grindelia hirsutula Vernon Oswald and Lowell Ahart 1990-7-31 4416 Butte Jeep trail between Concow Rd and Rim Rd ca 2 mi ne Concow 899 Comment
  CHSC34713  Grindelia hirsutula var. davyi M. S. Taylor 1981-7-10 4059 Butte North side of Feather River Hwy 70 at Pulga bridge, ca. 20 mi ne of Oroville. 487 Comment
  CHSC37365  Grindelia hirsutula var. davyi R. A. Schlising 1980-8-31 3976 Butte Richvale Vernal Pools, 1/4 mi s of jct of Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC4573  Grindelia hirsutula var. davyi C. Glascock 1965-5-18 431 Butte SW corner of Nelson and 4th Ave., Thermalito. Comment
  CHSC8118  Grindelia hirsutula var. davyi J. G. Moore 1969-5-17 81 Butte 20 yds. e of Cohasset Rd., directly across from entrance to Chico Municipal Airport, Chico. 60 Comment
  POM220946  Hackelia californica D. D. Keck, J. Clausen 1935-6-25 3772 Butte Spring Valley Reservoir 5 miles N.E. of Chaparral. 1707 Comment
  UC1560381  Hackelia californica E. Joyal and D. Mehlman 1988-7-3 1308 Butte e side of Humboldt Summit; Lassen National Forest 2100 Comment
  JEPS120074  Hedera helix Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17806 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC35665  Hedypnois cretica R. E. Preston 1982-4-22 253 Butte Ca. 1/2 mi ne of Line Saddle Powerhouse, ca. 4.5 mi se of Paradise. 304 Comment
  RSA0080129  Hedypnois cretica Lowell Ahart 2011-5-22 17356 Butte West edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 58 Comment
  SEINET3450915  Hedypnois cretica Unknown 2003-5-15 10179 Butte Oroville, Oroville, about 12 miles southeast, west side of North Honcut Creek, about 2.5 miles north and 2.6 miles east of Honcut 60 Comment
  CAS-BOT-BC306540  Helenium bigelovii E. B. Copeland 1930-7-11 s.n. Butte Jonesville 1500 Comment
  CHSC38358  Helenium puberulum Vernon Oswald 1983-6-14 680 Butte Upper Bidwell Park, Chico, on the n side of Upper Park Rd. ca. 100 ft e of Diversion Dam Parking Area L. 134 Comment
  JEPS118061  Helenium puberulum Lowell Ahart 2011-8-17 17625 Butte About 40 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
  POM55212  Helianthella californica var. nevadensis Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10473801  Helianthus annuus subsp. lenticularis Mary Susan Taylor 1978-9-8 Taylor 1876 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CAS-BOT-BC305517  Helianthus bolanderi A. A. Heller 1914-9-3 11761 Butte On the Chico-Hamilton road 6 miles from Chico Comment
  CHSC354  Helianthus californicus E. Walker 1932-7-20 Butte Durham. 57 Comment
  CAS-BOT-BC134034  Heliotropium M. S. Taylor 1975-10-3 943 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico 36 Comment
  UCD34287  Hemizonia congesta subsp. luzulifolia Beecher Crampton 1978-8-21 9661 Butte ca. 10 miles S.E. of Chico, 1/2 mile south of the jct. of Pentz road and Hwy.99. Comment
  CHSC33523  Herniaria hirsuta subsp. hirsuta R. A. Schlising 1981-7-11 4132 Butte NE of Oroville and NW of Brush Creek near French Creek Road crossing of French Creek. 613 Comment
  CHSC87190  Hesperevax acaulis var. acaulis Lowell Ahart 2004-4-4 10710 Butte About 20 yards north of the faint old fence ridge, about 175 yards east of Wilber Road, east-northeast of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito. 48 Comment
  JEPS33802  Hesperevax caulescens W. L. Jepson 1932-5-9 16368 Butte 6 mi n Nord (e of Cana (a small station on the S.P. Railroad)) 45 Comment
  CAS-BOT-BC487622  Heteranthera limosa John 1983-8-16 s.n. Butte Assumed to be from Biggs Rice Field Station, N of Biggs, 2.5 mi W of Hwy 99, 955 Butte City Hwy (Hwy 162) Comment
  CHSC100911  Heterocodon rariflorum R. A. Schlising 1979-5-4 3436 Butte South of Cohasset. 457 Comment
  CHSC33798  Heterocodon rariflorum M. S. Taylor 1981-4-28 3567 Butte N side of rd 23N28.2, in loop in rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. 929 Comment
  CHSC39533  Heterocodon rariflorum Lowell Ahart 1983-6-12 4040 Butte Along the edge of aroad near a small meadow, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  CAS-BOT-BC143635  Heteromeles arbutifolia Lowell Ahart 1985-6-30 5092 Butte 200 yards south of the road to the Forbestown Res., 100 yards south of the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown 899 Comment
  CHSC38644  Heteromeles arbutifolia Vernon Oswald 1982-12-17 25 Butte Bidwell Park, Chico, between Chico Creek and Upper Park Rd about 200 ft w of the end of the pavement. 91 Comment
  CHSC77442  Heteromeles arbutifolia Tim Stofer 1997-4-29 34 Butte Located 1 mi. from the shooting range on the South Rim Trail off South Park Dr. in upper Bidwell Park. Comment
  CHSC77444  Heteromeles arbutifolia Laura Bogni 1997-3-25 24 Butte Magalia grove. West side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  NY43614  Heteromeles arbutifolia S. Bianco 1995-11-3 1050 Butte 0.25km N of Concow School, on S end of Concow Rd 549 Comment
  SD8501  Heteromeles arbutifolia R. M. Austin 1883-1 Butte Comment
  SEINET11908428  Heteromeles arbutifolia Unknown 1978-1 6 Butte 20 ft. S of hwy. 32, 9 mi E. of jct of hwys 99 and 32. 9 mi, E of Chico 366 Comment
  CHSC96062  Heterotheca oregona var. compacta L. P. Janeway 2006-10-4 8900 Butte Sacramento Valley. Oroville Wildlife Area; 150 m east of Feather River, on west bank of narrow slough; 1.7 km south-southeast of the Thermalito Afterbay outlet. 32 Comment
  CAS-BOT-BC420460  Heuchera micrantha var. erubescens Lowell Ahart 1983-5-28 4019 Butte 5 1/2 miles N of town of Feather Falls 600 Comment
  JEPS94304  Hieracium albiflorum Lowell Ahart 1997-8-1 7779 Butte Near some small streamlets of Little Kimshew Creek, in snow Meadow, about 1/4 mile east of Table Mountain, about 8 air miles northeast of Stirling City. 1524 Comment
  CAS-BOT-BC55333  Hirschfeldia incana Lowell Ahart 1985-7-24 5157 Butte At the Generator, at the Forbestown Reservation, about 4.5 miles northeast of Forbestown. 350 Comment
  JEPS104590  Hoita macrostachya Lowell Ahart 2003-7-17 10420 Butte On the e side of Black Bart Rd, ca 1/2 mi w of the intersection of Forbestown Rd and Black Bart Rd, ca 4 mi (air) sw of Forbestown. 716 Comment
  SEINET13710942  Hoita macrostachya Lowell William Ahart, Lowell William Ahart 2003-1 10420 Butte About 4 Air Mi. SW of Forbestown (39 Deg 29'53.2"N, 121 Deg 20'22.7"W) 2350 Ft. 716 Comment
  CAS-BOT-BC280714  Holcus lanatus Lowell Ahart 1980-7-4 2460 Butte Along Forbestown Road 750 Comment
  CHSC4308  Holcus lanatus R. L. Smith 1966-5-20 4 Butte Butte Creek Canyon, Honey Run Rd. 4 mi. e of S Skyway. Comment
  CHSC48170  Holozonia filipes Vernon Oswald 1985-6-15 1831 Butte North Honcut Creek on Peter Ahart Ranch, ca. 2.75 mi ne of Honcut. 38 Comment
  CAS-BOT-BC285091  Hordeum marinum subsp. gussoneanum John Thomas Howell 1961-9-22 36781 Butte Jarbo Gap, Feather River Highway Comment
  CHSC36109  Hordeum marinum subsp. gussoneanum K. Bridwell 1978-5-25 109 Butte Ca. 300 yds s of Pentz Rd, ca. 3 mi e of intersection with Hwy 99, ca. 12 mi se of Chico. 76 Comment
  CHSC45196  Horkelia fusca subsp. parviflora Lowell Ahart 1984-7-19 4753 Butte Near the edges of a meadow, near the dirt road, about 1 1/2 miles south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 air miles north-east of Stirling City. 1371 Comment
  CAS-BOT-BC143977  Horkelia fusca var. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville 1550 Comment
  CAS-BOT-BC206135  Hosackia crassifolia V. Oswald; L. Ahart 1988-7-13 3582 Butte Road to High Lakes e of Philbrook Reservoir, on the n side of the road, on dry margins of a seep on a steep outcropping 1859 Comment
  CHSC45282  Hosackia crassifolia var. crassifolia Vernon Oswald 1987-6-23 3014 Butte High Lakes Rd. 2.1 mi (odometer) n of Philbrook Rd. 1828 Comment
  CHSC51874  Hosackia incana L. P. Janeway 1988-6-14 2786 Butte Near headwaters of Haw Cr on Carpenter Ridge, 1 1/2 air mi SE of Lomo. 1280 Comment
  CHSC113419  Hosackia oblongifolia var. oblongifolia Lowell Ahart 2014-7-13 19666 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CHSC45284  Hosackia pinnata Vernon Oswald 1987-4-28 2348 Butte Jordan Hill Rd. between Griffin Gulch and the road to Sawmill Peak Lookout. 914 Comment
  CHSC20536  Hydrangea arborescens Pamela Caldwell 1971-11-7 Butte CSUC campus. N bank of Chico Creek. Amphitheater. Comment
  CHSC116340  Hydrocotyle umbellata Lowell Ahart 2015-11-18 20656 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
  CHSC43268  Hydrocotyle umbellata Lowell Ahart 1987-9-4 5880 Butte On the sides of a drying pond, on the bottom of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CDA42847  Hypericum anagalloides L. Ahart 2011-7-9 17575 Butte Southeast edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. Comment
  UC398931  Hypericum anagalloides E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  RSA4237  Hypericum androsaemum E. B. Copeland 1929-7-16 381 Butte Jonesville 1550 Comment
  CAS-BOT-BC410221  Hypericum concinnum Lowell Ahart 1989-5-23 6231 Butte along the edge of a new subdivision road, 1/4 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CDA36535  Hypericum concinnum Bellue & Berry 1938-6-9 Butte 10 miles west of Thermalitos on main highway. 0 Comment
  CHSC94999  Hypericum formosum var. scouleri Lowell Ahart 2006-10-26 13510 Butte West side of a large meadow with bogs, about 75 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1560 Comment
  UC600533  Hypericum formosum var. scouleri H. F. Copeland 1930-7-24 1316 Butte Jonesville Comment
  CHSC116020  Hypericum mutilum subsp. mutilum Lowell Ahart 2015-10-20 20573 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  JEPS117557  Hypericum perforatum Lowell Ahart 2010-6-25 16841 Butte Open pasture field, on the north side of the improved parking area, about 100 yards north of the cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 409 Comment
  POM195674  Ipomopsis aggregata subsp. formosissima E. B. Copeland 1929-7-24 394 Butte Jonesville. 1550 Comment
  RSA135944  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20697 Butte 7 miles northeast from Pentz Trading Post on road to U.S. Highway 40 alt. from Oroville-Magalia road 579 Comment
  CHSC90188  Iris macrosiphon Camela J. Ott 1989-4-11 7 Butte Ca. 100 m ne of covered bridge, along e bank of Centerville Rd. 10.2 km ese of Chico. 120 Comment
  UCSB63624  Iris macrosiphon Chambers, Beth 1986-4-18 Butte N on Cohasset Rd; 13.8 mi from Eaton Rd; Chico 853 Comment
  CHSC35705  Iris tenuissima J. D. Jokerst 1982-5-8 1569 Butte Areas adjacent to road to Forbestown Resv. Comment
  CHSC31520  Isoetes howellii L. Ahart 1978-4-21 1662 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10932892  Isoetes howellii Mary Susan Taylor 1980-5-24 Taylor 2738 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC30017  Isoetes nuttallii L. Ahart 1980-5-17 2271 Butte 1/8 mi se of the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  CHSC36897  Isoetes nuttallii L. Ahart 1982-6-15 3563 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC78114  Isoetes nuttallii Lowell Ahart 2000-6-4 8443 Butte In the small meadow south of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 miles (air) southwest of Forbestown. 731 Comment
  CAS-BOT-BC61877  Isoetes nuttallii Lowell Ahart 1975-6-20 s.n. Butte Valley Grassland, Peter Ahart Ranch, Honcut 38 Comment
  CHSC55625  Isolepis setacea L. P. Janeway 1987-6-20 2271 A Butte Seepy area near Fall River and near the road to Fall River and Cascade, 3.0 mi north of the Feather Falls-Lumpkin Ridge Road. 1013 Comment
  CHSC78322  Isolepis setacea Lowell Ahart 2000-7-7 8557 Butte Small seep just west of the bridge across Fall River, on the north side of Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  CHSC78324  Isolepis setacea Lowell Ahart 2000-7-11 8564 Butte Seeps, on the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 miles southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 5 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS118484  Jensia rammii Lowell Ahart 2011-7-9 17569 Butte On the west edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville 967 Comment
  JEPS98524  Juncus acuminatus Lowell Ahart 2000-5-13 8341 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at the Thermalito Afterbay, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  CAS-BOT-BC210160  Juncus acuminatus Peter Rubtzoff 1978-8-6 9248 Butte Thermalito Forebay, North Area in Lake Oroville State Recreation Area. Near picnic area just off Hwy. 70 Comment
  JEPS114587  Juncus brachyphyllus Lowell Ahart 2008-5-30 14792 Butte Northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville 976 Comment
  SEINET10472237  Juncus bufonius Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4733 Butte About 1 1/2 mile south-east of Bald Mountain, 3/4 mile west of Oak Point, about 4 miles north-east of Stirling City. Comment
  UCD141375  Juncus bufonius H. A. Hannesson; R. N. Raynor 1940-5-9 s.n. Butte 4 miles east of Oroville. 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
  UCD141409  Juncus bufonius var. bufonius L. Ahart 1978-5-1 1683 Butte Peter Ahart Ranch, Honcut, about 2.25 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 120 Comment
  JEPS103414  Juncus capitatus Lowell Ahart 2002-4-24 9535 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  SEINET226470  Juncus capitatus B. Ertter, JL Strachan; L. Ahart 1980-5-7 3293 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Marysville and Oroville 30 Comment
  UC1609269  Juncus covillei var. covillei Lowell Ahart 1993-7-23 7109 Butte about 6 air mi ne of Feather Falls (about 1/8 mi s of the campgrounds on the large gravel bar along Fall River); s of Fall River 1036 Comment
  JEPS118083  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte About 30 yards east of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls 1225 Comment
  SBBG128059  Juncus effusus subsp. effusus L. Ahart 2011-8-19 17636 Butte ca. 30 yards E of Know-nothing Crk, in low area on the N side of Lumpkin Ridge Rd, ca. 0.5 mi SW of the intersection of Lumpkin Ridge Rd, County Rd and rd to Cascade, ca. 5 mi NE of Feather Falls 1225 Comment
  CHSC99762  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15141 Butte On the east side of Sucker Creek, about 5 yards north of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS113843  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-11 14288 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville 35 Comment
  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
  JEPS110168  Juncus ensifolius Lowell Ahart 2006-7-25 13058 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  CHSC32585  Juncus kelloggii L. Ahart 1980-5-11 2240 Butte In a pasture field on the w side of the Pentz-Magalia Hwy, ca. 1/2 mi nw of Kunkle Reservoir, ca. 3 mi s of Paradise. 500 Comment
  UC1438370  Juncus leiospermus Lowell Ahart 1978-4-21 1661 Butte Peter Ahart Ranch Honcut 50 Comment
  CHSC113248  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19391 Butte About one mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 356 Comment
  SD241643  Juncus leiospermus var. leiospermus Lowell Ahart 2003-4-15 10095 Butte Northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence. 271 Comment
  SEINET3450948  Juncus leiospermus var. leiospermus Unknown 2003-4-15 10095 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, 100 feet west of Hendricks ditch 270 Comment
  CAS-BOT-BC110772  Juncus mertensianus Lowell Ahart 1984-7-19 4755 Butte About 0.5 mile east of Bald Mountain, about 5 miles northeast of Stirling City. 1750 Comment
  UC1564792  Juncus nevadensis V. Oswald and L. Ahart 1989-6-27 3827 Butte ca 3.3 mi (air) se Jonesville (Humbug Rd at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CHSC78338  Juncus occidentalis Lowell Ahart 2000-6-29 8535 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC57156  Juncus orthophyllus L. P. Janeway; C. A. Janeway 1986-8-31 1808 Butte Along Scotts John Creek at road 26N27, 3 mi from Humboldt Road. 1737 Comment
  HSC100818  Juncus orthophyllus Lowell Ahart 2011-8-19 17634 Butte On the N edge of a good forest road, W edge of Know-northing Creek, ~150 yd. N of Lumpkin Ridge Rd., 5 (air) mi. NE of Feather Falls. 1225 Comment
  CHSC61352  Juncus oxymeris Lowell Ahart 1993-7-29 7133 Butte In a large bog, on the north side of the dirt road to Big Kimshew Creek, about 1 1/2 miles southeast of Bald Mountain, northeast of Stirling City. 1493 Comment
  JEPS116054  Juncus tenuis Lowell Ahart 2009-6-18 15914 Butte West side and bottom of the steep bank, south of the fence, about 10 yards west of the dredger piles along North Honcut Creek, about 2 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville 59 Comment
  JEPS117673  Juncus tenuis Lowell Ahart 2010-9-21 17225 Butte On damp bare disturbed soil, bottom and sides of a small wash, on the south side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1899 Comment
  UC1609503  Juncus tenuis Lowell Ahart 1993-7-23 7099 Butte ca. 6 (air) mi. n.e. Feather Falls (ca. 100 yds. w. of bridge across Fall River) 1036 Comment
  UCR246367  Juncus tenuis Peter F. Zika 2011-7-7 25541 A Butte Northern Sierra Nevada Highlands (n SNH), near parking lot for Big Bald Rock Trailhead, 0.2 air miles E of Big Bald Rock 1050 Comment
  SBBG128889  Juncus tenuis L. Ahart 2008-7-23 15143 Butte N side of S Fork of Feather River, ca. 10 yards W of where Sucker Crk enters S Fork of Feather River, below the high water line of Lake Oroville, ca. 1/4 mi W of Ponderosa Dam 258 Comment
  JEPS113275  Juncus triformis Lowell Ahart 2007-5-22 13896 Butte On Big Bald Rock, about 14 miles (air) northeast of Oroville 955 Comment
  CHSC109962  Juncus trilocularis P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25705 Butte 0.5 air miles NE of Little Bald Rock, NE of and below Bean Creek Road 0.6 road miles from bald Rock road, northern Sierra Nevada Highlands. 1005 Comment
  CHSC47572  Juncus uncialis Lowell Ahart 1974-4-11 364 Butte In a small vernal pool, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC47574  Juncus uncialis Lowell Ahart 1978-5-1 1695 Butte On the bottom of a small vernal pool in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC109614  Juncus usitatus Lowell Ahart; Linnea Hanson, Josephine Guardino 2012-5-23 18105 Butte Along the horse trail, north of Table 25, about 20 yards south of Vallombrosa aveune, southwest of Madrone, Lower Bidwell Park, Chico. 70 Comment
  JEPS113760  Juncus usitatus Lowell Ahart 2007-8-19 14493 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  RSA726657  Juncus usitatus L. Ahart 2007-7-5 14250 Butte Evans Reimer Road, about 1 1/4 miles east of Pennington Road, about 4 3/4 miles (air) southwest of Gridley. 23 Comment
  SBBG121533  Juncus usitatus L. Ahart 2007-7-5 14249 Butte ca. 25 yards W of French Ave, on N side of Evans Reimer Rd, ca. 2 air mi SW of Gridley 24 Comment
  UC1133653  Juncus xiphioides P. L. Johannsen 1936-7-17 949 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  RSA123366  Juniperus californica A. E. Wieslander 1933-6-24 330 Butte 8 miles southeast of Chico on Neal Road 122 Comment
  SEINET10547832  Keckiella breviflora subsp. glabrisepala Mary Susan Taylor 1980-5-15 Taylor 2622 Butte N of Chico along Cohasset Road. Comment
  UC690220  Keckiella breviflora var. glabrisepala A. A. Heller and H. E. Brown 1902-5-6 5471 Butte near Clear Creek; Berry Canyon Comment
  CHSC1857  Keckiella corymbosa M. Underhill 1952-7-18 Butte Indian Marker for Richardson Springs. 243 Comment
  CHSC37067  Keckiella lemmonii L. Ahart 1982-9-29 3841 Butte Along Pinkard Creek, ca. 1.5 mi n of Lost Creek Reservoir Dam, ca. 3.5 mi ne of Strawberry Valley. 1200 Comment
  UCSB63845  Keckiella lemmonii Ahart, Lowell 1997-8-1 Butte on west side of Little Kimshew Creek; about 1/4 mi E of Table Mtn; about 8 mi NE of Stirling City; T24N R5E Section 4 1371 Comment
  CHSC69053  Kelloggia galioides Lowell Ahart 1997-8-1 7802 Butte On the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  SD4941  Kelloggia galioides E. B. Copeland 1930-8-10 477 Butte Jonesville, partial shade 1550 Comment
  SEINET3450721  Kickxia elatine Unknown 2003-6-25 10316 Butte Oroville, Oroville, about 12 miles southeast, Peter Ahart Ranch, about 1.5 miles north and 1.67 miles east of Honcut 30 Comment
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Oct 9 2018
  CHSC103990  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  CHSC38825  Koeleria phleoides Vernon Oswald 1983-4-20 349 Butte Upper Bidwell Park, Chico, ca. 50 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). Along a pathway. 91 Comment
  SEINET10494459  Koelreuteria paniculata Mary Susan Taylor 1975-6-22 Taylor 790 Butte California State University, Chico, campus. 61 Comment
  CHSC113443  Kyhosia bolanderi Lowell Ahart 2014-7-13 19647 Butte Southwest edge of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC274275  Lachnagrostis filiformis L. P. Janeway 1991-6-7 3991 Butte Ca 0.8 mi east of Palermo-Honcut Road, ca. 5.1 mi south of Palermo 38 Comment
  SEINET10473869  Lactuca saligna Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5151 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  JEPS104647  Lagophylla glandulosa Lowell Ahart 2003-8-3 10465 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 (air) se of Oroville. 60 Comment
  RSA71070  Lagophylla glandulosa L. S. Rose 1951-6-26 51017 Butte Feather River Canyon, NE of Oroville 183 Comment
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  CAS-BOT-BC324474  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte Along Butee Creek between Durham and Nelson 53 Comment
  CAS-BOT-BC354124  Lasthenia fremontii H. E. Brown 1897-4-15 153 Butte Near Clear Creek. 53 Comment
  POM30704  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  SEINET10475350  Lasthenia fremontii Mary Susan Taylor 1974-3-26 Taylor 93 Butte Meadow in vicinity of Stillson Canyon and Old City Dump, ca. 2 mi E of Chico; soil wet rocky clay. Comment
  UCD133699  Lasthenia fremontii L. Ahart 1978-5-1 1693 Butte Ahart Ranch, Honcut. 50 Comment
  RSA726251  Lasthenia platycarpha R. R. Halse 2002-3-27 6159 Butte At the junction of State Highway 99 and Hamilton Nord Cana Highway. ca. 8 miles NW of Chico. 40 Comment
  UCR227351  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s.n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road Comment
  CHSC29994  Lathyrus angulatus L. Ahart 1980-4-28 2111 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44391  Lathyrus angulatus Lowell Ahart 1988-5-12 5991 Butte Open pasture field, about 1/4 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  JEPS103577  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
  CHSC87553  Lathyrus sulphureus R. D. Fischer 2004-3-28 66 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Guardian Trail where it runs below the Disk Golf Course. 335 Comment
  SEINET10452338  Lathyrus sulphureus Lowell Ahart 1983-5-13 Ahart 3989 Butte Banks of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. Foothill Woodland; 50 m. 50 Comment
  CHSC31353  Layia fremontii Roberta A. Boer 1980-4-25 16 Butte Ca. 1/4 mi n of Humboldt Rd. and 1.5 mi e of the jct of Hwy 32 and Hwy 99, ca. 2.0 mi e of Chico. 131 Comment
  CHSC35631  Layia fremontii R. E. Preston 1982-3-27 212 Butte SE corner of int Larkin Rd and Oro Dam Blvd, Oroville. 51 Comment
  UCSB63596  Layia fremontii Wilson, Simon 1995-4-11 Butte Ca. 5 mi. n of Chico, 1 mi. toward Richardson Springs from junction of Cohasset Rd. and Richardson Springs Rd.; Richardson Springs USGS Quadrangle T23N, R1E, NW 1/4 sect. 23 115 Comment
  SEINET10466002  Lemna minuta Mary Susan Taylor 1982-4-28 Taylor 4371 Butte T17N R1E se/sw sec 14. Pennington quad. Aquatic in slough, ca. 1/2 mi s of HQ on Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC102408  Leontodon taraxacoides subsp. longirostris Lowell Ahart 2009-6-19 15945 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  CHSC20877  Lepechinia calycina Robert A. Schlising 1963-6-7 2613 Butte 3.1 mi s of Cohasset along Cohasset Highway. Comment
  CHSC3354  Lepechinia calycina Robert L. Smith 1966-5-20 55 Butte Paradise, 5 miles SW of Postorrice. Comment
  SD29267  Lepechinia calycina W. I. Follett 1936-5-9 43 Butte t.6 miles southwest of Forest Ranch. 548 Comment
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Jul 27 2012
  UC884242  Lepechinia calycina A. A. Heller 1915-5-28 11906 Butte near the upper limit of the digger pine in the Sierra foothills Comment
  CAS-BOT-BC88736  Lepidium appelianum J. D. Jokerst; R. A. Schlising 1982-6-4 4287 Butte North of Oroville and north of Jarbo Gap along Highway 70 above Feather River Canyon. Comment
  CHSC102419  Lepidium campestre Lowell Ahart 2009-7-9 16017 Butte On dry sandy soil, 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
  CHSC66665  Lepidium latifolium Vernon H. Oswald 1996-7-17 8062 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. At Dan's Camp, north end of Riparian Sanctuary. 30 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
  CHSC101082  Lepidium nitidum var. nitidum Lowell Ahart; John Dittes 2009-3-20 15506 Butte Open area west of the Guardian Rock Trail, about 175 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico. 407 Comment
  CHSC65686  Lepidium nitidum var. nitidum Vernon H. Oswald 1996-3-22 7254 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. Sanctuary 1, NE corner of Tract 10.2. On a levee running along the E side of the tract. 33 Comment
  CAS-BOT-BC12845  Lepidium pinnatifidum Lowell Ahart 1982-7-10 3664 Butte Gray Lodge check in station, about 12 miles southwest of Gridley. Parking area. 35 Comment
  CAS-BOT-BC13065  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-9 5601 Butte Along Pulga Road, about 2 miles southwest of Bardees Bar along the North Fork of the Feather River. 365 Comment
  CHSC69464  Leptochloa dubia Lowell Ahart 1997-9-6 7894 Butte On the west side of Highway 70, just north of Rich Gulch Road, about 1 1/2 miles north of the bridge across the West Branch of Lake Oroville. 396 Comment
  UC1562350  Leptochloa fascicularis Vernon H. Oswald and Lowell Ahart 1990-7-31 4413 Butte Vinton Gulch Lake Oroville (ca 0.7 air mi n, bordering a streamlet on strand of lake below level of the cement ramp) 259 Comment
  CAS-BOT-BC226522  Leptosiphon acicularis Lowell Ahart 1986-4-4 5243 Butte About 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville 82 Comment
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Jul 19 2018
  POM65119  Leptosiphon androsaceus A. A. Heller 1902-5-13 5544 Butte Grade between Clear Creek and Paradise Comment
  CHSC69682  Leptosiphon bolanderi Vernon Oswald 1986-4-29 1990 Butte Rim Rd. (Ponderosa Way) 3.6 mi n of Jarbo Gap and Hwy 70. 853 Comment
  CHSC109164  Leptosiphon ciliatus Lowell Ahart 2012-5-12 18039 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
  CHSC44323  Leptosiphon ciliatus Lowell Ahart 1979-4-22 1833 Butte On a bank along North Honcut Creek, about 1/2 mile north of Avocado Avenue and on the east side of North Honcut Creek, about 3 miles north-west of Bangor. 91 Comment
  CHSC52452  Leptosiphon ciliatus R. A. Emmrich 1975-4-24 60 Butte Ca 1/2 mi E of Butte Cr and 1/4 mi SE of Covered Bridge, 6 mi ESE of Chico. 106 Comment
  CHSC46222  Leptosiphon filipes Pauleen Broyles 1987-6-19 1057 Butte Ca 13 km ne of Oroville. Ca 1.6 km s of Crystal Hill between middle and south forks of Feather River on Lake Oroville. 360 Comment
  CHSC30276  Lessingia nemaclada M. S. Taylor; J. D. Jokerst 1979-10-13 2274 Butte On w side of Jordan Hill Rd (Ponderosa Way on some maps), ca. 11.1 mi n of its jct with Concow Rd, ca. 1.9 mi n of Sawmill Peak. 853 Comment
  CAS-BOT-BC341785  Lessingia nemaclada John Thomas Howell 1959-9-20 34718 Butte At Pulga bridge, Feather River Highway Comment
  RSA32899  Lessingia nemaclada A. A. Heller 1923-10-21 13832 Butte Paradise Comment
  SEINET10474781  Lessingia nemaclada Mary Susan Taylor 1978-9-9 Taylor 1918 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC28474  Lewisia cantelovii R. A. Schlising; D. Ikeda 1979-9-29 3492 Butte .4 mi NE of Arch Rock Tunnel alongside Hwy 70 and ... Field redacted by CHSC, contact the data manager for more information Comment
  CHSC11356  Lewisia rediviva Lowell Ahart 1971-4-10 Butte Table Mountain, Oroville. 457 Comment
  HSC38354  Lewisia rediviva J. P. Smith 1974-4-20 Butte 305 Comment
  CHSC71627  Ligusticum californicum Vernon H. Oswald; Lowell Ahart 1998-8-11 9472 Butte Four Trees-Coyote Gap Rd. 0.1 mi west of Four Trees. 1578 Comment
  CHSC102411  Lilium humboldtii subsp. humboldtii Lowell Ahart 2009-6-30 15970 Butte On dry soil, around boulders, on the east bank of ... Field redacted by CHSC, contact the data manager for more information 234 Comment
  CHSC43044  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-19 2241 Butte Side ravine south from Sly Cr, 1.6 mi from the Challenge-La Porte Rd along the rd to the SE side of Sly Cr Reservoir. 1097 Comment
  CHSC46224  Lilium pardalinum subsp. pardalinum Pauleen Broyles 1987-6-26 1060 Butte Ca. 2.0 km s of Inskip on W. side of Skyway. 1400 Comment
  CAS-BOT-BC508459  Lilium parvum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  POM182757  Lilium parvum Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC46238  Lilium washingtonianum Pauleen Broyles 1987-8-5 1074 Butte Ca 6 km n of Inskip, ca. 0.3 km n of jct. Of Skyway and Bull Hill Rd. 1530 Comment
  CAS-BOT-BC110607  Limnanthes John Thomas Howell 1976-4-1 51529 Butte Sierra Nevada. Table Mountain, 4 to 5 miles north of Oroville. 304 Comment
  UCD116443  Limnanthes H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles west of Oroville. Comment
  CHSC76945  Limnanthes alba Margie Collins 1894-5-1 Butte Chico. Comment
  CHSC118035  Limnanthes alba subsp. alba Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 225 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  CHSC48596  Limnanthes alba subsp. alba Vernon Oswald 1988-5-17 3311 Butte Forbestown Rd. 2.2 mi e of Oroville-Quincy Hwy (Hwy 162). Along the edge of the road. 426 Comment
  JEPS104300  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC67541  Limnanthes douglasii subsp. rosea James D. Jokerst; M. S. Taylor 1980-3-20 486 Butte 50 m NW of junction of Bruce Rd. and Skyway, SE side Chico. Comment
  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
  UC726867  Limnanthes douglasii subsp. rosea A. A. Heller 1916-3-8 12279 Butte 8 mi n Oroville (below blue oak belt) Comment
  CHSC102870  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-24 Butte Northern Sacramento Valley. Vernal pool swale complex on a ridge of basalt on the east side of the Potter Road bike path and north of Humbug Road. The vernal pool/swale complex flows into a drainage that continues west into the Little Chico Creek Overflow Channel. 135 Comment
  HSC85944  Limnanthes floccosa subsp. californica J. Hunter 1986-3-30 39 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  JEPS107699  Limnophila X ludoviciana Lowell Ahart 2005-9-13 12368 Butte 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 Road Comment
  CHSC103693  Limosella aquatica Lowell Ahart 2010-5-14 16657 Butte In the tracks of an old road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  CHSC82232  Limosella aquatica Lowell Ahart 2002-4-14 9483 Butte Area between the Railroad and the Midway Road, 50 yards south of Nelson Dlavo Road, in Nelson. 36 Comment
  CDA6352  Linaria genistifolia subsp. dalmatica L. Ahart 2005-11-12 12484 Butte On the south side of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road. Comment
  CHSC112742  Lindernia dubia var. anagallidea Lowell Ahart 2013-11-13 19237 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
  CHSC94583  Lindernia dubia var. anagallidea Lowell Ahart 2006-9-11 13292 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
  SD2733  Linum lewisii E. B. Copeland 1929-7-17 Butte Above Jonesville 2000 Comment
  CHSC45133  Lipocarpha aristulata Vernon Oswald 1987-9-7 3231 Butte Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. 45 Comment
  SEINET12216579  Lithophragma heterophyllum S. T. Heaston 1982-1 4 Butte ca 1 mi NE of Chico Golf Course Bridge, along N side of Big Chico Creek 122 Comment
  CHSC12180  Lithophragma parviflorum var. parviflorum Lowell Ahart 1969-4-8 Butte Table Mountain, Oroville. 396 Comment
  CHSC87426  Lithophragma parviflorum var. parviflorum R. D. Fischer 2004-3-20 116 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Along Guardian Trail, south of Pine Trail. UTM: 10609476E 4405711N. 384 Comment
  CHSC33582  Lithospermum californicum M. S. Taylor 1981-4-27 3556 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CDA43081  Lobularia maritima L. P. Janeway 2011-10-2 10779 Butte Sacramento Valley.; South end of Chico; along west side of Hwy 99 0.6 km south of Skyway/East Park Ave and 0.3 km south of Comanche Creek. Comment
  CAS-BOT-BC342142  Logfia filaginoides A. A. Heller 1914-6-2 11148 Butte 8 miles north of Oroville Comment
  CHSC38349  Logfia filaginoides Vernon Oswald 1983-4-18 336 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.2 mi e of the power lines. Base of ridge along rim of a volcanic cap. 353 Comment
  CAS-BOT-BC342384  Logfia gallica John Thomas Howell 1962-6-16 37560 Butte Magalia 731 Comment
  CAS-BOT-BC269075  Lolium perenne John Thomas Howell; Gordon H. True 1967-6-11 42557 Butte On northwest side of Feather River Canyon near Pulga Bridge Comment
  SEINET10592064  Lolium temulentum A. Arthur Heller 1914-6-2 Heller 11475 Butte Hills 8 miles north of Oroville. Comment
  CHSC32603  Lomatium caruifolium var. denticulatum Don Kroessig 1979-4-15 1 Butte SE of Chico at the intersection of the Skyway and Bruce Road. 76 Comment
  UC726872  Lomatium caruifolium var. denticulatum A. A. Heller 1938-4-23 15056 Butte 1/4 mi. e. Jarboe Pass (on State Hwy. #24) Comment
  UCD150870  Lomatium caruifolium var. denticulatum W. R. Powell 1968-4-22 1464 Butte 3 miles north of Honcut. 32 Comment
  RSA713002  Lomatium marginatum L. Ahart 2006-5-8 12606 Butte North of Phantom Falls ,about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles north of Oroville 384 Comment
  SEINET10454537  Lomatium utriculatum Mary Susan Taylor 1979-6-12 Taylor 2302 Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  UC600683  Lonicera conjugialis H. F. Copeland 1920-7-29 460 Butte Jonesville woods Jonesville 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
  JEPS103289  Lonicera hispidula var. vacillans 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
  RSA725050  Lonicera hispidula var. vacillans L. P. Janeway 2007-6-11 9039 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 20N67, 0.6 km NW of Lumpkin Road, 2.3 km W of Feather Falls town site. 777 Comment
  CAS-BOT-BC240689  Lonicera interrupta Lewis S. Rose 1945-5-12 45034 Butte Richardson Springs 304 Comment
  CHSC101834  Lonicera interrupta Lowell Ahart 2009-5-23 15756 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 1/4 mile west of the interection of Highway 32 and Ten Mile House Road, on west side of Ten Mile House Road, north of Guardians Trail. 381 Comment
  CHSC42131  Lonicera involucrata var. involucrata Lowell Ahart 1977-5-18 1370 Butte Along the South Fork of the Feather River, near Golden Trout Crossing. 640 Comment
  CHSC109073  Lonicera japonica Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17914 Butte On the north side of the path, near Table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC115434  Lonicera japonica Ariana Gehrig 2013-5-9 Butte City of Chico. Near campus. 64 Comment
  POM27894  Lotus wrangelianus C. C. Bruce 1897-04 2089 Butte Chico Comment
  UCD65937  Ludwigia hexapetala Robert McKee; Greg Woods 2006-8-1 06- 29 -LU Butte Oroville Wildlife Area, immediately east of Feather River, south of Thermolito and Oroville. 9 Comment
  CHSC102987  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 68 Comment
  UC204453  Ludwigia palustris A. A. Heller 1914-8-13 11683 Butte hills 8 mi. n. Oroville Comment
  UCR192812  Lupinus 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
  CHSC46099  Lupinus albicaulis J. D. Jokerst; R. A. Schlising 1983-5-24 1773 Butte Common on the edges and cut banks of Highway 162 east of Oroville. At the junction of Simmon's Rd 0.9 miles north of the Bidwell Bar Ridge. Comment
  CHSC115452  Lupinus albifrons M. Sutton; C. Yasuda, S. Luse 2013-4-9 23 Butte Centerville Flumes. 350 Comment
  SEINET10452619  Lupinus albifrons Mary Susan Taylor 1976-4-27 Taylor 1098 Butte Abundant in Yellow Pine Forest, on N or S side of Ponderosa Way, ca. 1-4 mi E of junction of Villas Rd and Cohasset Hwy, ca. 23 mi NE of Chico. 610 Comment
  CHSC899  Lupinus albifrons var. albifrons L. Nelson 1935-5-7 Butte Honey Run road. 243 Comment
  CAS-BOT-BC196249  Lupinus albifrons var. eminens A. A. Heller 1914-4-29 s.n. Butte 12 miles north of Chico Comment
  CHSC91265  Lupinus apertus L. P. Janeway 2005-5-29 8405 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
  UCD107191  Lupinus bicolor A. A. Heller 1914-2-2 11166 Butte Canon hf Big Chico creek 6 miles east of Chico. Comment
  SEINET10940039  Lupinus bicolor subsp. pipersmithii Lowell Ahart 1985-4-1 Ahart 4873 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  JEPS107276  Lupinus bicolor var. pipersmithii Lowell Ahart 2005-4-18 11733 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC26255  Lupinus bicolor var. tridentatus John Steiner 1977-4-23 58 Butte Growing adjacent to s bank of Chico Creek at e end of Chico Canyon Rd. 65 Comment
  CAS-BOT-BC8537  Lupinus caeruleus Amos Arthur Heller 1940-4-28 15561 Butte Between the Radio Station and Hooker Oak, east of Chico Comment
  SEINET10452072  Lupinus densiflorus Lowell Ahart 1985-5-6 Ahart 4932 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  SEINET10450558  Lupinus formosus Lowell Ahart 1984-6-8 Ahart 4682 Butte Along the edge of the dirt road that goes to Lumpkin Ridge Rd, ca. 6 mi NE of Ponderosa Dam, ca. 4 mi SE of Feather Falls; Yellow Pine Forest; 550 m. 550 Comment
  UC727109  Lupinus formosus var. robustus A. A. Heller 1940-4-28 15561 Butte e Chico (along roadside between the radio station and Hooker Oak); ; between radio station & Hooker Oak, E of Chico, Butte Co. Comment
  CDA27454  Lupinus latifolius var. columbianus Vernon H. Oswald & Lowell Ahart 1998-8-11 9471 Butte Four Trees-Coyote Gap Road 0.4 mile west of Four Trees. Comment
  CHSC90510  Lupinus microcarpus var. densiflorus Doug Burcombe 1988-4-13 15 Butte 10 m N of old Gianelli bridge and 95 m E of Sacramento River. 9 mi W of Chico. N side of Hwy. 32. 70 Comment
  CDA13344  Lupinus nanus G. F. Hrusa, T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada; along Hwy 162. Near entrance to Rogers Cow Camp. Comment
  CHSC34684  Lupinus nanus M. S. Taylor 1981-5-5 3601 Butte E side of Lumpkin-LaPorte Rd, 1 mi n of Enterprise bridge over south fork Feather River, ca. 10 air mi e of Oroville. 457 Comment
  CHSC34691  Lupinus nanus M. S. Taylor 1981-5-14 3717 Butte N side of 23N00.2, 2.5 mi sw of Merrimac on Oroville-Quincy Hwy. 975 Comment
  CHSC90365  Lupinus nanus Thomas E. Lewis 1978-3-29 7 Butte Ca. 200 m ne of Salmon Hole, ca. 5.5 km from the start of Upper Bidwell Park Rd, Chico. 230 Comment
  UCR237310  Lupinus nanus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18762 Butte Northwestern Sacramento Valley, entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  UCD108993  Lupinus nanus A. A. Heller 1914-4-21 11311 Butte Chico. Comment
  CHSC3227  Lupinus nanus var. apricus Virignia Hagaman 1966-3-28 218 Butte On top of Table Mountain. Comment
  CHSC48535  Lupinus nanus var. apricus Vernon Oswald 1983-3-31 245 Butte Upper Bidwell Park, Chico, beside Yahi Trail between Day Camp and Bear Hole. 103 Comment
  CHSC103685  Lupinus pachylobus Lowell Ahart 2010-4-30 16593 Butte Below rim and above cliffs, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 360 Comment
  CHSC32763  Lupinus pachylobus J. D. Jokerst 1981-3-29 1280 Butte Top of North Table Mountain, ca. 1.0 mi N of Cherokee Rd. 373 Comment
  CHSC61212  Lupinus pachylobus Vernon H. Oswald; Lowell Ahart 1993-3-24 5243 Butte E side of Dry Creek Canyon N of the historical site of Pentz, on the east side of a secondary drainage entering Dry Creek 2 mi. N of Pentz Rd. 262 Comment
  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
  CHSC42529  Lupinus polycarpus Lowell Ahart 1987-5-6 5523 Butte Along the road, near the Poe Power House on the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 277 Comment
  POM118225  Lupinus sellulus var. lobbii H. M. Hall 1912-7-24 320 Butte Middle Fork of Feather River. 1280 Comment
  CHSC936  Lupinus stiversii E. Walker 1932-4-28 Butte Pulga on Feather River. 365 Comment
  CHSC52711  Luzula cascadensis L. P. Janeway 1988-7-29 3104 Butte Butte Creek at Butte Meadows, at crossing of Bull Hill Road (Skyway). North-facing bank above the creek. 1325 Comment
  POM196063  Luzula comosa H. F. Copeland 1929-6-11 1244 Butte Jonesville. 1524 Comment
  SEINET10472473  Luzula comosa Mary Susan Taylor 1981-4-8 Taylor 3514 Butte T22N R4E east center sec 1, Pulga SW quad. On serpentine slope, w side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 3000 ft. 914 Comment
  JEPS121938  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC38926  Luzula macrantha Vernon Oswald 1983-4-6 293 Butte Upper Bidwell Park, Chico, on Yahi Trail between Brown's Hole and the e end of the park. In a steamlet at the bottom of a slope bordering Chico Creek. 198 Comment
  CHSC76150  Luzula macrantha G. F. Hrusa 1997-4-30 13696 Butte Sierra Nevada. Serpentine outcrop on Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. 760 Comment
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  CHSC61354  Luzula parviflora Lowell Ahart 1993-7-23 7108 Butte On the sides of a small 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
  JEPS119866  Luzula subsessilis Lowell Ahart 2012-5-12 18028 Butte About 400 yards southwest of Ten Mile House Road, about 1/2 mile (air) west of Highway 32, south part of Upper Bidwell Park, about 9 miles (air) northeast of Chico. Comment
  UC1586530  Lycopus americanus Lowell Ahart 1991-9-14 6717 Butte ca. 2 mi. e. Honcut (between 2 large reservoirs, Joie Osgood Ranch); Joie Osgood Ranch 45 Comment
  CHSC28472  Lythrum hyssopifolia R. A. Schlising 1979-5-30 3428 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
  JEPS120840  Lythrum hyssopifolia Lowell Ahart 2013-7-9 18833 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
  RSA0015861  Lythrum hyssopifolia L. S. Rose 1967-6-11 67102 Butte Oroville. 52 Comment
  SEINET10452839  Lythrum hyssopifolia Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4132 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
  CDA18958  Lythrum salicaria R. Hill, Lee Pejas 2000-6-16 PDR 1170812 Butte on Hwy 99 at Dry Creek crossing. 0 Comment
  CHSC97205  Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville. 36 Comment
  CDA5126  Lythrum salicaria G. D. Barbe 1982-8-11 3893 Butte At the northeast corner of State Wildlife Area, west of Pacific Heights Road, 1/4 mile west of end of Welsh Road, ca 2 miles south of Oroville. 0 Comment
  CHSC112696  Lythrum tribracteatum Lowell Ahart 2013-6-18 18809 Butte Edge of a pond, about 30 yards north of Lower Honcut Road, about 1 3/4 miles west of Honcut. 26 Comment
  POM193088  Madia bolanderi E. B. Copeland 1930-8-4 496 Butte Jonesville 1500 Comment
  JEPS87530  Madia elegans Lowell Ahart 1993-6-20 6998 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CHSC60955  Madia elegans subsp. elegans Lowell Ahart 1993-6-20 6998 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west pf the Lost Creek Reservoir Dam. 1158 Comment
  CAS-BOT-BC344321  Madia exigua John Thomas Howell 1962-6-15 37487 Butte Magalia 731 Comment
  CHSC109573  Madia exigua L. P. Janeway 2012-6-7 10861 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
  CHSC99309  Madia exigua Lowell Ahart 2008-5-21 14769 Butte Below the high water line of Lake Oroville, on the north side of the South Fork of the Feather River, about 150 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  POM362160  Madia exigua L. S. Rose 1937-6-10 37359 Butte Hurleton 579 Comment
  CHSC48179  Madia gracilis Vernon Oswald 1985-5-28 1787 Butte Oroville-Quincy Hwy at the first pull-out on the e side of the road 0.8 mi n of Bidwell Bar Bridge. 320 Comment
  CHSC50101  Malacothrix floccifera Vernon Oswald 1990-4-24 4169 Butte Lime Saddle Recreation Area on th West Branch of Lake Oroville, ca. 0.2 mi northeast of Nelson Bar Launch, ca. 0.2 mi east of Lime Saddle Powerhouse. 292 Comment
  CHSC87889  Malacothrix floccifera Lowell Ahart 2004-6-22 11113 Butte Road cut, on the north side of Doe Mill Road, about 1/12 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. 692 Comment
  CDA14064  Malus sylvestris G. F. Hrusa, T. D. Wilfred 1997-5-1 13711 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  JEPS119994  Malva parviflora Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17915 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  JEPS88407  Malvella leprosa Vernon H. Oswald and Lowell Ahart 1996-7-22 8094 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & Sacramento R. (n.e. c); Sacamento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CHSC44978  Marah fabacea J. Witzman 1987-3-7 6 Butte Along Butte Creek nr Humbug Rd. ca 3 mi n of jct with Skyway, se of Chico. 97 Comment
  CHSC28647  Marah watsonii M. S. Taylor 1979-3-20 1960 Butte Along old road on n side of Feather River. Ca. 1/4 mi n of Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  RSA441249  Marah watsonii K. M. Stocking 28 Butte 0.9 mile down from Paradise on short cut to Chico. [W of Paradise] 457 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
  CHSC60988  Marrubium vulgare Lowell Ahart 1993-6-20 6976 Butte At Camp 18. 1158 Comment
  JEPS115503  Marrubium vulgare Lowell Ahart 2009-6-12 15845 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET10498135  Marrubium vulgare Mary Susan Taylor 1975-2-16 Taylor 386 Butte Ca. 2 mi S of Kunkle Reservoir, ca. 4 mi S of Paradise, on W side of Pentz-Magalia Hwy. Foothill Woodland. 427 Comment
  CAS-BOT-BC67811  Marsilea vestita Lowell Ahart 1983-7-10 4191 Butte About 1/2 mile north-east of teh intersection of Highway 99 and Pentz Road, about 13 miles north of Oroville. 65 Comment
  CHSC21052  Marsilea vestita M. S. Taylor 1975-10-4 958 Butte On e edge of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  SEINET13709914  Marsilea vestita Lowell William Ahart, Lowell William Ahart 2002-1 9659 Butte Gray Lodge State Wildlife Management Area, 4 Mi. SW of Gridley, Edge of Drying Pond (T17N, R2E, sec 17, SE 1/4), 74 Ft. Comment
  CHSC96248  Medicago arabica R. Fischer 2006-4-25 1001 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing at the southern end of reserve on the west facing hillside in small openings adjacent seasonal springs. 304 Comment
  CHSC98803  Medicago lupulina L. P. Janeway 2008-5-19 9365 Butte Sacramento Valley. East side Chico; east side of Hwy 99 between 8th and 9th Streets, in the western part of the CalTrans Park and Ride area. In a wet area of open compact ground with various ornamental plantings between asphalt parking areas. 66 Comment
  CHSC113206  Medicago polymorpha Lowell Ahart 2014-4-25 19406 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
  CHSC46104  Medicago polymorpha J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1542 Butte Grey Lodge Waterfoul Management Area along Rutheford Rd. where it turns 90 degrees to the north. Comment
  CHSC945  Medicago polymorpha A. Koopman 1929-3-5 Butte CSC Campus. 57 Comment
  CHSC99634  Medicago polymorpha H. Koeth 2007-4-26 Butte 20th and Salem Street, Chico. UTM 10 600693E 4396754N. 57 Comment
  CDA4218  Medicago polymorpha T. C. Fuller 1962-5-17 8703 Butte Highway 99E at Cana Highway, ca. 10 miles northwest of Chico. 0 Comment
  CHSC44500  Medicago praecox Lowell Ahart 1988-5-8 5983 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut about 12 miles south-east of Oroville. 60 Comment
  CHSC74167  Melica aristata B. Castro; L. Gehrung 1998-8-19 823 Butte Ca 4.5 air mi NNE of Brush Creek, ca 1 mi SE of Rogers Cow Camp, 100-300 ft W of Oro-Quincy Hwy on top and upper sides of ridge E of Get-Up-and-Get Creek. 1213 Comment
  JEPS110273  Melica aristata Lowell Ahart 2006-6-9 12648 Butte Cutbank, on the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  JEPS113256  Melica californica Lowell Ahart 2007-5-29 13924 Butte 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 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northea 598 Comment
  UCD87014  Melica californica A. A. Heller 1915-4-20 11860 Butte Butte County. 7 miles below Centerville in the Sierra foothills, where it is locally plentiful on the banks of Butte Creek. 76 Comment
  CHSC51952  Melica californica var. nevadensis T. B. Devine 1980-4-28 722 Butte On Cherokee Rd ca 1.5 mi S of jct of Hwy 70, ca 1/2 mi S of Cherokee. Comment
  CAS-BOT-BC281300  Melica harfordii Lowell Ahart 1983-7-24 4216 Butte On the road cutbank at the Forbestown Res., ca 5 miles NE of Forbestown 450 Comment
  CDA13298  Melica harfordii G. F. Hrusa, T. D. Wilfred 1996-7-9 13146 Butte Plumas National Forest; Common colonies on dry, shaded slopes in coniferous understory above Jordan Creek S of Hwy 162 near Roger's Cow Camp. Perennial. Comment
  CHSC88257  Melica harfordii Lowell Ahart 2004-7-11 11229 Butte On the north side of the road, on the northeast side of Paradise Lake, about 1/4 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  RSA718332  Melica harfordii L. Ahart 2006-6-9 12648 Butte On the west side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 404 Comment
  CAS-BOT-BC262457  Melica subulata E. B. Copeland 1929-7-16 s.n. Butte Jonesville 1550 Comment
  CHSC74047  Melica subulata L. Hanson 1996-5-15 Butte Ca 3 air mi N of town of Brush Creek, along edges of Peavine Creek. 627 Comment
  CHSC97780  Melissa officinalis L. P. Janeway 2007-8-12 9157 Butte Northern High Sierra Nevada. Along old Berry Creek Road 2.0 road km north of Oroville-Quincy Hwy; 1.4 air km south of the mouth of Berry Creek at North Fork Feather River (Lake Oroville). 384 Comment
  JEPS119619  Melissa officinalis Lowell Ahart 2012-6-21 18219 Butte About 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  UCD125040  Mentha canadensis L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC109668  Mentha spicata Lowell Ahart 2012-6-28 18239 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. 61 Comment
  CHSC58925  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte On the bottom of Oregon Gulch, north of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/4 miles north-west of Oroville Dam. 91 Comment
  CHSC92047  Mentha spicata Lowell Ahart 2005-8-19 12334 Butte On the east side of North Honcut Creek, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 49 Comment
  CAS-BOT-BC428762  Micranthes californica A. A. Heller 1919-3-25 13098 Butte Canon [Canyon] of Chico Creek Comment
  CAS-BOT-BC428768  Micranthes californica Robert R. Kehlor 1951-4-14 31 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville, on Mt. Ida road Comment
  CHSC12189  Micranthes integrifolia Lowell Ahart 1973-3-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCD73010  Micropus californicus Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  POM57380  Micropus californicus E. B. Copeland 1903-5-2 s.n. Butte Chico Comment
  CHSC33350  Micropus californicus var. californicus R. M. Winchell 1980-4-17 3 Butte Covered Bridge along Little Butte Creek. Comment
  UC1070012  Micropus californicus var. californicus C. G. Albertus 1933-7-6 25 Butte 1/4 mi w Pentz; Chico Quadrangle Comment
  CAS-BOT-BC348699  Microseris acuminata Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  SEINET3450909  Microseris acuminata Unknown 2003-4-8 10037 Butte Oroville, Oroville, about 7 air miles north, North Table Mountain, about 0.5 miles west of the iron gate and fence, northwest of Cherokee Road, about 200 yards north of the falls on Coon Hollow 320 Comment
  UC886107  Mimulus bicolor A. A. Heller 1915-5-28 11905 Butte near Cohasset; Sierra Foothills Comment
  CHSC118882  Mimulus glaucescens Christopher T. Ivey 2017-5-27 391 Butte Honeyrun Road, about 6 km NE of bridge crossing Butte Creek, roadside ditch on S side or road. 424 Comment
  JEPS5550  Mimulus glaucescens R. F. Hoover 1936-5-21 1158 Butte 3 mi n Chico Comment
  UCD122662  Mimulus guttatus L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  POM181673  Mimulus kelloggii Williams 1927-4-2 s.n. Butte Near Richardson's Springs. Comment
  SEINET10570234  Mimulus kelloggii Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5390 Butte T23N R3E sec 28? S side of Humbug Rd, ca. 3.5 mi SW of Nimshew, ca. 10 air mi NE of Chico. Foothill Woodland. Comment
  UCD122734  Mimulus kelloggii M. Vincent 1961-3-26 20 Butte Near Feather River bridge, Nelson Bar Road, two miles east of Spence Road. 457 Comment
  POM264937  Mimulus layneae Lincoln Constance 1941-5-28 2828 Butte South Branch of the Feather River at Magalia, Sierra Nevada foothills. 488 Comment
  CHSC44808  Mimulus moschatus R. Banchero 1980-6-6 201 Butte Along Bald Rock Rd 1.7 mi S of the N jct with Hwy 162, 7.6 mi NE of the S jct with Hwy 162, ca 1/4 mi E of the Rd. 963 Comment
  SEINET10896222  Mimulus pilosus Mary Susan Taylor 1975-10-3 Taylor 938 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
  SEINET10929276  Mimulus pilosus Lowell Ahart 1984-8-19 Ahart 4780 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  SEINET10570288  Mimulus tricolor Lowell Ahart 1983-6-6 Ahart 4029 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC4074  Minuartia californica H. E. Lindahl 1967-3-25 15 Butte Ca 40 ft. s of intersection of Durham-Oroville highway and Chico-Oroville highway. 60 Comment
  JEPS97433  Minuartia californica Lowell Ahart 1995-5-30 7588 Butte 7 mi N of Oroville (North Table Mountain, edge of the dirt road, about 1/10 mi SE of the reservoir, N of Beatson Hollow, 2 mi NW of Cherokee Road) 304 Comment
  UCD73013  Minuartia californica Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  UCD80209  Minuartia californica CNPS SN Foothill Team 2005-5-4 SNFN 0200 b Butte City of Chico, Bidwell Ranch, about 1.33 miles NW of the end of Wildwood road. 88 Comment
  SEINET8391884  Minuartia douglasii Unknown 1989-4-18 3370 Butte above Lunt Rd., 0.4 mi. n. of Hwy. #70. Comment
  CHSC66289  Moehringia macrophylla Lowell Ahart 1996-6-5 7682 Butte On the east side of the river, about 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  CHSC42101  Mollugo verticillata Lowell Ahart 1986-11-7 5424 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  RSA688936  Mollugo verticillata L. Ahart 1986-11-14 5478 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 37 Comment
  CHSC38477  Monardella breweri subsp. lanceolata Vernon Oswald 1983-6-27 766 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel near the diversion weir. 79 Comment
  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
  CAS-BOT-BC318571  Monardella odoratissima subsp. pallida H. F. Copeland 1920-8-29 135 Butte Jonesville woods 1219 Comment
  JEPS117416  Monardella odoratissima subsp. pallida Lowell Ahart 2010-9-28 17247 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1-1/2 miles (air) northeast of Jones Meadow, about 2-1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  UC104639  Monardella odoratissima subsp. pallida Mrs. R. M. Austin 1896-7-1 289 Butte Colby Comment
  CAS-BOT-BC220447  Monardella sheltonii Lowell Ahart 1988-7-28 6137 Butte At the north side of the dam at Lost Creek Reservoir 1036 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
  CHSC43847  Monardella sheltonii B. Castro 1987-5-18 91 Butte Approx. 9 mi e of Chico and ca 1/2 mi e of Hwy 32 via Altatina Dr. 457 Comment
  CAS-BOT-BC220451  Monardella sheltonii John Thomas Howell 1976-7-14 51812 Butte Feather River Canyon Highway just east of Jarbo Gap 640 Comment
  JEPS62419  Monardella villosa subsp. villosa W. I. Follett 1937-6-25 95 Butte 4.7 mi north Bidwell Bar (on the old Oroville-Quincy highway) 335 Comment
  UC1562413  Monardella villosa subsp. villosa Lowell Ahart 1990-5-28 6502 Butte South of Palm Avenue, about 1/4 mile east of Larkin Road, about 2 1/2 miles north-east of East Gridley. 30 Comment
  UC1221752  Monochoria vaginalis Beecher Crampton 1957-9-17 4628 Butte 5 mi nw of Biggs (Biggs Rice Experiment Station); Biggs Rice Experiment Station Comment
  UC1564781  Monolepis nuttalliana V. Oswald and L. Ahart 1989-6-27 3833 Butte ca. 3.3 mi. (air) s.e. Jonesville (Humbug Rd. at Butte Creek House, along Butte Creek); Butte Creek 1767 Comment
  CHSC50333  Montia chamissoi Vernon Oswald 1990-5-17 4218 Butte Meadow near the headwaters of Concow Creek, on the west side of Concow Rd. ca. 0.5 mile south-southwest of Flea Valley. Common in a marshy area along the creek at the foot of the meadow. 1097 Comment
  POM101957  Montia clara C. C. Bruce 1897-06 2013 Butte Fields Comment
  CAS-BOT-BC444797  Montia diffusa M. S. Taylor 1981-5-5 3615 Butte In Bryant Ravine at its jct with spur rd off 21N35Y, ca. 1 mi s of Feather Falls trailhead, ca. 0.5 mi n of Feather Falls community. 822 Comment
  CHSC31854  Montia fontana subsp. amporitana L. Ahart 1974-2-12 300 Butte Peter Ahart Ranch, Honcut. 45 Comment
  JEPS95821  Muhlenbergia filiformis Lowell Ahart 1999-10-3 8284 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
  RSA518697  Muhlenbergia mexicana L. Ahart 1990-10-21 6635 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about half mile west of Gold Flat. 213 Comment
  CHSC31165  Myosurus apetalus var. borealis M. S. Taylor; J. D. Jokerst 1980-3-28 2401 Butte In and around vernal pools, jst e of Chico, between Humboldt Rd and Hwy 32, ca. 1/4 mi e of Forest Ave., ca. 1.5 mi e of Hwy 99. 76 Comment
  CAS-BOT-BC83267  Myosurus minimus Lowell Ahart 1982-4-29 3389 Butte Gray Lodge, about 12 miles southwest of Gridley. Near the sign in station. 35 Comment
  CHSC42355  Nama lobbii Lowell Ahart 1987-5-22 5685 Butte A little north of the dirt county road, Lumpkin Ridge Road, about 4 miles northeast of Feather Falls. 1280 Comment
  CAS-BOT-BC60376  Nasturtium officinale Lowell Ahart 1989-5-31 6332 Butte North of the end of Truex Road, near Lake Oroville, about 0.25 mile NW of the West Branch Bridge across Lake Oroville. 304 Comment
  CHSC28859  Navarretia divaricata J. D. Jokerst; T. B. Devine 1979-5-18 462 Butte Top of North Table Mt, ca 200 met N of jct of Cherokee Rd and E edge of Mt. Comment
  CHSC36817  Navarretia divaricata D. H. Ikeda 1980-5-26 383 Butte Cohasset Ridge, s of Cohasset. 426 Comment
  UC1609052  Navarretia divaricata Lowell Ahart 1993-7-29 7125 Butte 6.5 mi ne Stirling City (2.5 mi ne of Bald Mountain, .12 mi n of the Snow Mine, on the e side of an old water ditch for gold mining) 1676 Comment
  JEPS108740  Navarretia divaricata subsp. divaricata Lowell Ahart 2006-7-16 13002 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CHSC112682  Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  UC856827  Navarretia intertexta A. A. Heller 1914-5-11 11386 Butte 8 mi n Oroville Comment
  UCD48469  Navarretia intertexta W. R. Powell 1968-5-6 1481 Butte 1.8 miles north-northeast of Bangor, Butte County, California. 342 Comment
  CHSC52107  Navarretia leucocephala Kimberly J. Weir 1976-4-15 4 Butte In vernal pool, ca. 1 mi s of Big Chico Creek and 1.5 mi ene of Chico, 20 ft n of Humboldt Road. 60 Comment
  UCD48502  Navarretia leucocephala W. R. Powell 1968-4-23 1472 Butte 2 miles south-southeast of Oroville, Butte County, California. 71 Comment
  JEPS107890  Navarretia leucocephala subsp. leucocephala Lowell Ahart 2005-5-28 11818 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  UCD37442  Navarretia nigelliformis Beecher Crampton 1960-6-15 5622 Butte Butte County, 10 miles southeast of central Chico. Comment
  JEPS107888  Navarretia pubescens Lowell Ahart 2005-5-28 11819 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito 67 Comment
  CHSC91106  Navarretia tagetina Lowell Ahart 2005-5-28 11821 A Butte South edge of Falager Ct., intersection of Falager Ct. and Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  CHSC91115  Navarretia tagetina Lowell Ahart 2005-5-27 11813 Butte Pasture field, about 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  RSA715673  Navarretia tagetina L. Ahart 2005-5-27 11813 Butte About 50 yards northeast of the tower, Peter Ahart Ranch, about 2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  SD122582  Nemacladus interior Lowell Ahart 1984-6-8 4669 Butte Ponderosa Dam, ca. 2 miles northwest of Forbestown. North side of reservoir 370 Comment
  RSA32941  Nemophila heterophylla A. A. Heller 1937-5-31 s.n. Butte Yankee Hill Comment
  CAS-BOT-BC7219  Nemophila menziesii H. E. Brown 1897-4-15 145 Butte Near Clear Creek 53 Comment
  UC24206  Nemophila menziesii Winifred Paine 1902-3-29 Butte Chico Comment
  CHSC28653  Nemophila pedunculata M. S. Taylor 1979-3-31 1967 Butte Lickey Ranch, along Ishi Trail Rd, ca. 1/2 mi n of Concow Rd and Lake Concow. 670 Comment
  UC107250  Nemophila pedunculata H. E. Brown Mar 3 1897-Mar 22 1897 173 Butte near Clear Creek; ; Clear Creek, Butte Co. 53 Comment
  SD4034  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 Comment
  POM183140  Nemophila spatulata H. F. Copeland 1930-7-28 1302 Butte Neighborhood of Jonesville. Near head of South Willow Creek. 1829 Comment
  POM199585  Nemophila spatulata H. F. Copeland 1932-6-29 s.n. Butte Jonesville. Above meadow by Butte Creek. Comment
  CHSC105956  Nicotiana acuminata var. multiflora Lowell Ahart 2010-9-24 17235 Butte Near the southwest edge of the Golf Course, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC112924  Nicotiana acuminata var. multiflora B. Castro; R. Carter 2010-7-13 1823 Butte Sacramento Valley. S side of Thermalito Power Canal ca 0.3 mi E of Hwy 70, ca 0.25 mi W of Table Mtn Blvd and ca 0.25 mi S of Garden Drive , on the north end of Oroville. 70 Comment
  CHSC116131  Nicotiana acuminata var. multiflora Lowell Ahart 2015-11-7 20625 Butte On the bottom and on the west side of Dark Canyon, west of the parking area at the end of old highway Alternate 40, strand of Lake Oroville, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 224 Comment
  JEPS95875  Nicotiana quadrivalvis Lowell Ahart 1999-8-13 8136 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SBBG25316  Notholithocarpus densiflorus var. densiflorus F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  CHSC46801  Nuphar lutea subsp. polysepala R. A. Schlising; P. Broyles 1986-8-5 4500 Butte NE of Snag Lake, and to W of Old Butte Creek House; small lake. 1822 Comment
  CAS-BOT-BC400070  Nuphar polysepala E. B. Copeland 1930-7-29 415 Butte Jonesville 1700 Comment
  CHSC108847  Oemleria cerasiformis Lowell Ahart 2012-3-2 17768 Butte About 40 yards east of the Pine Trail, south of a deep drainage, about 1/4 mile west of Highway 32, about 8-1/2 miles northeast of Chico. 387 Comment
  CHSC94508  Oreostemma alpigenum var. andersonii Lowell Ahart 2006-8-15 13182 Butte Bog, near the center of a large open meadow with bogs, about 70 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC48640  Orobanche fasciculata Vernon Oswald 1987-4-14 2324 Butte Garland Rd. 0.3 mi n of Doe Mill Rd. (ene of Forest Ranch). 524 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
  JEPS12903  Orobanche fasciculata E. B. Copeland 1931-7-6 Butte Jonesville, west of willow Creek. Comment
  JEPS95517  Orobanche uniflora Lowell Ahart 1994-4-22 7286 Butte 3 1/2 mi SW of Forbestown (S of int of Black Bart Road and Forbestown Road) 609 Comment
  JEPS104025  Orobanche uniflora var. uniflora Lowell Ahart 2003-4-15 10098 Butte Steep slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC1169  Orobanche vallicola J. Wakeman 1962-8-12 Butte Bank of Chico Creek, Bidwell Ave. near Rodgers. 54 Comment
  SDSU10840  Orthocarpus erianthus Scott McMillan 1992-4-11 11 IV92A Butte The pool was under a electrical tower north of Upper Park Rd., in Upper Bidwell Park, Chico. 78 Comment
  SEINET10935052  Oryza sativa Lowell Ahart 1984-9-17 Ahart 4793 Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m elev. 50 Comment
  SEINET10925598  Oryzopsis miliacea James D. Jokerst, Lowell Ahart 1981-9-26 Jokerst 1478 Butte Along dirt road N of Big Chico Cr ca 200 m E of the Sacramento River. Riparian Woodland. 30 Comment
  CHSC104808  Osmorhiza chilensis Lowell Ahart 2010-5-23 16731 Butte On both sides of Pine Trail, about 50 yards east of Guardians Trail, about 1/8 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico. 455 Comment
  RSA712842  Oxalis corniculata Vernon H. Oswald 1999-5-6 9724 Butte East side of Sacramento River and north side of Big Chico Creek, Bidwell Sacramento River State Park west of Chico, along the dirt road leading into the Big Chico Creek river access. 37 Comment
  UC195451  Oxypolis occidentalis A. A. Heller 1914-8-6 11641 Butte Chico Meadows Sierra Nevada Comment
  UCD150723  Packera eurycephala Collector Unknown 1977-5-21 s.n. Butte California, Butte County. Near Pulga Canyon. Slopes of the Feather River. Elevation estimated by label-maker. 457 Comment
  CHSC109848  Packera eurycephala var. lewisrosei L. P. Janeway 2012-6-7 10864 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
  CHSC94765  Panicum acuminatum var. acuminatum Lowell Ahart 2006-9-11 13307 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC253702  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  JEPS95815  Panicum capillare Lowell Ahart 1999-9-21 8281 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
  UCD89512  Panicum capillare A. A. Heller 1916-9-30 12665 Butte 8 miles north of Oroville. Comment
  CHSC40879  Parentucellia viscosa Lowell Ahart 1985-5-20 5008 Butte Near the Little Pump, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS119623  Parthenocissus quinquefolia Lowell Ahart 2012-6-21 18210 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  JEPS98522  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  CHSC46759  Pectocarya pusilla Lowell Ahart 1980-5-4 2213 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
  CHSC54095  Pectocarya pusilla Vernon H. Oswald; Lowell Ahart 1991-5-13 4580 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC43162  Pedicularis attollens R. A. Schlising 1980-7-8 3866 Butte N of Butte Creek and several mi N of Butte Meadows near Cherry Hill Campground in large meadow. Comment
  CHSC1842  Pedicularis densiflora R. Carter 1965-3-15 165 Butte Found on bank above road on SE corner of intersection of Oroville-Forbestown Rd. and Swedes Flat Rd. ca. 10.5 mi. E of Oroville. 502 Comment
  NY68337  Pedicularis groenlandica A. A. Heller 1928-7-10 14673 Butte At Butte Meadows in the yellow pine belt. Comment
  CAS-BOT-BC71199  Pellaea andromedifolia John Thomas Howell 1962-6-16 37620 Butte Nelson Bar 213 Comment
  CHSC97737  Pellaea andromedifolia Lowell Ahart 2007-11-3 14550 Butte West of the high water line of Lake Oroville, about 1/2 mile east of the Power House below Kunckle Reservoir, about one mile north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 322 Comment
  SEINET3166410  Pellaea mucronata P. J. Alexander 2009-5-27 1048 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  SEINET10971559  Pellaea mucronata Lowell Ahart 1983-3-28 Ahart 3912 Butte E bank of Woodleaf Creek above the rd, ca. 3/8 mi sw of Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest. 450 Comment
  CHSC97017  Pellaea mucronata var. mucronata L. P. Janeway 2007-6-19 9064 Butte Northern High Sierra Nevada. Plumas National Forest; along the dirt road to the upper end of the penstock of the Forbestown Pow-erhouse; 2.4 air km east-northeast of Ponderosa Dam, 500 m northeast of South Fork Feather River. 556 Comment
  CHSC88056  Penstemon azureus var. azureus R. D. Fischer 2004-5-30 182 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1 mile s. of this junction. 643 Comment
  NY600732  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  UC600439  Penstemon gracilentus H. F. Copeland June, 1931 Butte Jonesville Comment
  SEINET10547986  Penstemon gracilentus Mary Susan Taylor 1978-7-19 Taylor 1780 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  NY604514  Penstemon laetus var. leptosepalus A. A. Heller 1928-6-20 14666 Butte At Butte Meadows Comment
  CHSC28011  Penstemon neotericus M. S. Taylor 1978-7-21 1800 Butte Ca. 1 mi n of Lake Madrone, on e side of Oroville-Quincy Hwy. 609 Comment
  CAS-BOT-BC245635  Penstemon personatus Lowell Ahart 1984-7-19 4761 Butte About 1 mile north-east of Bald Mountain, about 6 miles north-east of Stirling City 1900 Comment
  CHSC54  Pentagramma pallida R. J. Wakeman 1964-2-1 Butte Chico Creek Canyon of Bidwell Park. 152 Comment
  UC1481799  Pentagramma pallida C. C. Hall 1917-5-16 1030 b Butte Iron Canyon Comment
  CHSC23460  Pentagramma triangularis J. R. Lee 1974-4-15 1 Butte Found on n side of Upper Bidwell Park road w of Salmon hole and 4.3 mi from the Chico Municipal golf Course. 121 Comment
  CHSC3982  Pentagramma triangularis E. P. Parreno 1967-2-20 Butte Salmon Hole. Comment
  SEINET3166411  Pentagramma triangularis subsp. triangularis P. J. Alexander 2009-5-27 1049 Butte Western foothills of the northern Sierra Nevada, Feather Falls trail +-0.4 trail miles short of the overlook, 2.2 miles ESE of Bald Rock Dome, 17.8 miles NE of Orovoville, Plumas National Forest. 616 Comment
  SFV10664  Pentagramma triangularis subsp. triangularis M. L. Vincent 1965-4-16 624 Butte Pentz Road, 0.5 miles east of Pentz school. Comment
  CAS-BOT-BC211263  Perideridia bacigalupii Lowell Ahart 1985-6-30 5090 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
  CHSC37133  Perideridia bolanderi subsp. involucrata L. Ahart 1982-7-1 3654 Butte Ca. 1 1/4 mi n and 2 1/2 mi e of Honcut, Peter Ahart Ranch. 50 Comment
  SBBG120014  Perideridia lemmonii L. Ahart 2006-8-15 13176 Butte 0.75 mi (air) NW of Jonesville, about 5 mi (air) NE of Butte Meadows 1569 Comment
  CHSC64034  Perideridia parishii subsp. latifolia S. C. Morey 1983-8-4 708 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  HSC73010  Perideridia parishii subsp. latifolia M. S. Taylor, L. Ahart 1981-8-16 4204 Butte Jones Meadow, 3 mi. S of Philbrook Reservoir, 6 mi. NE of Stirling City 1829 Comment
  UCD99344  Persicaria amphibia Collector unknown 1927-12-16 1406 Butte Biggs Rice Station. Comment
  CHSC30868  Persicaria hydropiper J. D. Jokerst 1980-7-18 997 Butte Top of North Table Mt., ca 100 m NW of the jct. Cherokee Rd. and the east edge of mt. Comment
  CHSC40909  Persicaria hydropiper Lowell Ahart 1985-11-7 5234 Butte About 80 feet below the high water line of Lake Oroville, on the bottom of the South Fork of the Feather River, about 300 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC34055  Persicaria lapathifolia L. Ahart; M. S. Taylor 1981-8-15 3041 Butte On drying bottom of north side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  JEPS120613  Persicaria lapathifolia Lowell Ahart 2013-11-13 19236 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
  CHSC110398  Persicaria maculosa Lowell Ahart 2012-9-28 18462 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC96551  Petrorhagia dubia L. P. Janeway 2006-4-30 8563 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  UCD120383  Phacelia distans Collector unknown 1925-5-17 1782 Butte Marysville Buttes. Comment
  CHSC24760  Phacelia egena Keith Lickey 1976-4-14 59 Butte 300 m w of Hwy 70, ca. 1 km n of Lunt Rd. 365 Comment
  CHSC39110  Phacelia egena R. A. Schlising 1983-5-13 4406 Butte Bald Rock Dome area in e-central part of county. On the granodiorite dome in open area within region of yellow pine forest. 548 Comment
  UC671701  Phacelia heterophylla subsp. virgata Lincoln Constance 1941-5-28 2829 Butte Magalia Sierra Nevada foothills, South Branch of Feather River 518 Comment
  RSA32015  Phacelia imbricata subsp. imbricata A. A. Heller 1938-5-28 15111 Butte Near the Las Plumas road on the Feather River Highway. Comment
  CHSC36081  Phacelia mutabilis R. A. Schlising 1981-8-4 4188 Butte Top (n end) of Scotts John Road, 3.1 mi n of its jct with main road to Jonesville. Comment
  UC1564794  Phacelia procera V. Oswald and L. Ahart 1989-7-12 3851 Butte ca 2 air mi sw Lotts Lake (ca 3 air mi se of Philbrook Reservoir); Big Kimshew Creek 1926 Comment
  CHSC39119  Phacelia racemosa R. A. Schlising 1981-6-20 4095 Butte About 10 mi e of Inskip, ne of Jones Meadows. 1877 Comment
  UC600776  Phacelia racemosa H. F. Copeland 1930-7-28 Butte by So. Willow Creek; Jonesville 1828 Comment
  CHSC730  Phacelia tanacetifolia V. Holt 1935-3-30 Butte Chico Creek ridge. 304 Comment
  CHSC71215  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte Edge of a vernal pool or seep, about 1/2 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC61545  Phalaris lemmonii Lowell Ahart 1993-5-15 6943 Butte Rice field, east of the Cherokee Canal and north of the Biggs Princeton Road, about 3 miles west of Biggs. 30 Comment
  CAS-BOT-BC77370  Philadelphus lewisii Grace Kermode 1899-6-1 s.n. Butte Chico Comment
  JEPS123884  Philadelphus lewisii Lowell Ahart 2015-5-5 20144 Butte Oroville Wildlife Area, about one mile south of the Headquarters, about one mile south of Thermalito. Comment
  UC1127341  Philadelphus lewisii J. E. Sowder 1933-5-26 78 Butte 1/2 mi w Yankee Hill; Chico Quadrangle Comment
  SEINET10482893  Philadelphus lewisii subsp. californicus Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4080 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC250864  Phleum pratense M. S. Taylor 1978-7-21 1836 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone 997 Comment
  SEINET10507565  Phleum pratense Mary Susan Taylor 1978-7-18 Taylor 1720 Butte On N side of Butte Creek, ca. 1/8 mi W of Road Island Junction, at junction of Butte Creek and Old Humboldt Road, ca. 1 mi W of Cherry Hill Campground; Yellow Pine Forest. 1524 Comment
  CHSC35093  Phlox diffusa R. A. Schlising 1980-6-10 3670 Butte Along Humbolt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CAS-BOT-BC135128  Phoradendron juniperinum Lowell Ahart 1980-9-10 2622 Butte Little Bald Rock 1100 Comment
  JEPS98508  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CHSC103145  Phoradendron macrophyllum Lowell Ahart 2009-8-3 16255 Butte On the east side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  CHSC116304  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2015-11-18 20667 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
  SEINET10936355  Phoradendron villosum Mary Susan Taylor 1981-1-5 Taylor 3373 Butte T21N R4E sw sec 6. Cherokee quad. Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. Foothill Woodland and Savannah; 1350 ft. 411 Comment
  CHSC42333  Phyllostachys bambusoides B. C. Willingham 1968-6-3 Butte Plant Introduction Station, Chico. Purchased in Nagasaki, Japan. Comment
  CHSC51373  Physalis acutifolia Vernon Oswald; Lowell Ahart 1990-10-11 4456 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  CDA5828  Physalis lancifolia Margaret Bellue 1947-8-23 Butte Afton Road near Biggs. 0 Comment
  RSA702777  Phytolacca americana L. Ahart 2004-9-28 11405 Butte On the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles northeast of Durham, about 3 1/2 miles southeast of Chico. 58 Comment
  SEINET4890912  Phytolacca americana R. R. Halse 2006-8-2 6977 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CAS-BOT-BC434419  Phytolacca americana Alice Eastwood 1913-6-18 s.n. Butte Experimental Station, Chico Comment
  CHSC109764  Phytolacca americana var. americana Lowell Ahart 2012-10-28 18524 Butte About 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  SEINET10449366  Pieris japonica Mary Susan Taylor 1975-5-6 Taylor 554 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC118034  Pilularia americana Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 230 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field 41 Comment
  JEPS99057  Pilularia americana Lowell Ahart 2002-4-24 9525 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) SW of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  JEPS104187  Pinus jeffreyi Lowell Ahart 2003-10-17 10641 Butte In rock pile ca 25 yd n of Humboldt Peak, ca 1/2 mi e of Humboldt Summit, ca 8 mi (air) ne of Butte Meadows. 2154 Comment
  NY61961  Pinus monticola A. A. Heller 1915-6-26 12033 Butte This specimen represents an endangered or threatened species. The specific locality has been removed from this record to protect this species from over-collection. These data may be supplied to researchers on request. Comment
  LA35048  Pinus sabiniana Ira L. Wiggins; 1940-8-7 40- 161 k Butte near Chico 761 Comment
  CHSC54458  Piperia colemanii Vernon H. Oswald 1991-7-15 4731 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its juction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  CHSC116592  Piperia elongata L. P. Janeway 2015-6-30 11790 Butte Northern High Sierra Nevada. Plumas National forest; along road 19N19 1.3 road-km east of Ponderosa Way; north-northwest slopes halfway between Sunset Hill and Ponderosa Dam (South fork Feather River). 701 Comment
  POM365989  Piptatherum miliaceum L. Ahart, Peter Ahart 1984-6-10 4690 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
  UC2026875  Pistacia chinensis Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17912 Butte On the north side of the path, near table 14, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  SEINET10529969  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1979-5-4 Taylor 1996 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  JEPS127089  Plagiobothrys Lowell Ahart 2016-4-14 20742 Butte North of Larkin Road, about 6 miles (air) southwest of Oroville. Comment
  POM64763  Plagiobothrys bracteatus E. B. Copeland 1903-5-15 3046 Butte Chico Comment
  POM126228  Plagiobothrys bracteatus Francis Ramaley 1917-5-6 11215 Butte Near Chico Comment
  UC480699  Plagiobothrys canescens H. F. Copeland 1923-3-16 602 Butte near Butte Creek Comment
  UC78035  Plagiobothrys canescens Mrs. R. M. Austin Mar 1896 Butte Comment
  CHSC90103  Plagiobothrys fulvus M. A. Carlson 1991-4-12 17 Butte Renkow Road 0.4 mi east of Meridian Road, 12 mi north of Chico. 70 Comment
  SEINET12275924  Plagiobothrys fulvus Unknown s.n. Butte no further locality Comment
  SEINET12320808  Plagiobothrys fulvus Unknown 1974-1 15 Butte adjacent to Fern Bank area, upper Bidwell Park Comment
  POM71620  Plagiobothrys glyptocarpus var. glyptocarpus C. C. Bruce 1898-05 1928 Butte [No locality information provided] Comment
  RSA189363  Plagiobothrys greenei L. S. Rose 1967-5-6 67056 Butte Oroville 52 Comment
  CHSC31256  Plagiobothrys hispidulus R. A. Schlising; R. Banchero 1980-7-14 3892 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows); in meadow/pasture. 1511 Comment
  UC1601347  Plagiobothrys hispidulus A. A. Heller 1914-6-22 11496 Butte Chico Meadows 1219 Comment
  CHSC103988  Plagiobothrys nothofulvus Lowell Ahart 2010-5-14 16672 Butte Along the trail, near the south park fence, about 1/2 mile west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 257 Comment
  CHSC28468  Plagiobothrys nothofulvus R. A. Schlising 1979-4-15 3365 Butte Richvale vernal pools; 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay; near ditch. Comment
  POM71480  Plagiobothrys nothofulvus C. C. Bruce 1897-03 1927 Butte Foothill plains. Comment
  UC1601376  Plagiobothrys stipitatus Mrs. R. W. Summers Butte Comment
  CHSC29043  Plagiobothrys stipitatus var. micranthus J. D. Jokerst 1979-4-6 544 Butte At the edges of dry vernal pools (at the high water mark). Top of North Table Mt, N of Cherokee Rd. 403 Comment
  CHSC38278  Plagiobothrys stipitatus var. micranthus Vernon Oswald 1983-4-20 356 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). Along the edge of vernal pond. 85 Comment
  RSA0114655  Plagiobothrys stipitatus var. micranthus Lowell A. Ahart 2015-5-5 20137 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
  CHSC54377  Plagiobothrys stipitatus var. stipitatus M. Bailey 1991-4-19 564 Butte Butte College campus. On margins of drainages, w of Well #3 ca 500 ft e of Williams Road and 1/4 mi n of Pentz Road. 85 Comment
  CHSC65897  Plagiobothrys stipitatus var. stipitatus Vernon H. Oswald 1996-4-10 7355 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. Along a check in an old irrigated pasture at the S end of Tract 7, Sanctuary 2. 33 Comment
  CHSC75257  Plagiobothrys stipitatus var. stipitatus Jennifer Slater 1997-4-6 2 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  RSA691927  Planodes virginica L. Ahart 2003-5-9 10123 Butte Waste area along the SW corner of a prune orchard, on the N side of Evans Reimer Road, about 3/4 mile W of Block Road, about 3 miles (air) SW of Gridley. 24 Comment
  CHSC28765  Plantago bigelovii J. D. Jokerst 1979-3-30 194 Butte Ca 300 meters S.E. of Hwy. 32, east of Chico. 396 Comment
  SEINET10499839  Plantago bigelovii Lowell Ahart 1984-4-24 Ahart 4584 Butte Peter Ahart Ranch, ca. 2.5 mi NE of Honcut, ca. 12 mi S of Oroville. Valley Grassland; 50 m. 50 Comment
  JEPS117515  Plantago coronopus Lowell Ahart 2010-5-22 16713 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  UCD77277  Plantago coronopus Robert E. Preston 2005-3-24 2326 Butte Palermo Substation, ca. 1.3 mi NE of Palermo 121 Comment
  SEINET10499802  Plantago coronopus Mary Susan Taylor 1975-4-18 Taylor 481 Butte SW corner of Broyles Rd and Hwy 99, ca. 6 mi N of Chico; Valley Grassland. Associates: Orthocarpus erianthus and attenuatus, Layia fremontii, Limnanthes alba. 61 Comment
  JEPS104322  Plantago elongata Lowell Ahart 2003-3-31 10027 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin Rd, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 43 Comment
  SEINET12328349  Plantago elongata Unknown 1984-1 4584 Butte Peter Ahart Ranch, ca 2.5 mi NE of Honcut, ca 12 mi S of Oroville 50 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
  CHSC24896  Plantago erecta G. K. Mead 1976-4-23 14 Butte Ca. 150 yds S of Butte Creek and 2.0 mi W of the Covered Bridge. 6.4 mi ESE of Chico. 121 Comment
  CHSC31163  Plantago erecta M. S. Taylor 1980-3-1 2353 Butte On bluffs overlooking Hamlin Canyon, ca. 1/2 mi se of Neal Rd, ca. 2 mi sw of Paradise. 301 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
  CHSC116959  Plantago lanceolata Matthew Forster 2013-5-14 Butte Oroville spillway, off Oro Powerhouse Rd. 118 Comment
  JEPS115348  Plantago lanceolata Lowell Ahart 2009-7-3 15989 Butte 10 yards north of Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET10499812  Plantago lanceolata Mary Susan Taylor 1978-9-8 Taylor 1892 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC113388  Plantago major Lowell Ahart 2014-7-2 19548 Butte On the poor road, east of cow corral, about 200 yards north of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1281 Comment
  CDA42769  Plantago virginica L. Ahart 2011-5-2 17350 Butte Open pasture field, about 100 yards west of the dredged edge of North Honcut Creek, about 2 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  SEINET13710809  Plantago virginica Lowell William Ahart, Lowell William Ahart 2000-1 8348 Butte Thermalito Afterbay W of Larkin Rd., 5 Air Mi. SW of Oroville, 140 Ft. (T19N, R3E, sec 27, SW 1/4) 43 Comment
  CAS-BOT-BC91591  Platystemon californicus A. A. Heller 1913-4-6 10718 Butte Bottoms along Big Chico Creek, east of Chico. Comment
  POM225861  Platystemon californicus var. californicus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  JEPS119792  Plectritis macrocera Lowell Ahart 2012-5-4 17994 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UC474262  Pleuricospora fimbriolata H. F. Copeland 1930-7-21 Butte Jonesville, Butte Creek Butte Creek; Jonesville, Butte Creek Comment
  CAS-BOT-BC458149  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville 1550 Comment
  CHSC47626  Poa annua Lowell Ahart 1977-4-2 1236 Butte In a pasture field, 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
  CHSC96379  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 35 Comment
  JEPS116032  Poa annua Lowell Ahart, Josephine Guardino, Steve Green 2009-2-20 15491 Butte Near the north side of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  JEPS122268  Poa annua Lowell Ahart 2014-4-9 19324 Butte On the north side of Colusa Highway, about 4/10 mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. Comment
  POM183185  Poa bolanderi H. F. Copeland 1930-7-21 1349 Butte Jonesville. 1524 Comment
  UC600760  Poa bolanderi H. F. Copeland 1930-7-21 1349 Butte Jonesville 1524 Comment
  SEINET10657849  Poa bulbosa Lowell Ahart 1987-5-6 Ahart 5561 Butte On dry bare disturbed soil along the road, at the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. Comment
  SEINET10655771  Poa epilis Vernon H. Oswald, Lowell Ahart 1990-7-19 Oswald 4371 Butte Slope on the south side of Philbrook Creek, ca. 3 miles east of Philbrook Reservoir, ca. 0.8 mile west of the Plumas County line. T25N R5E SW/S16. Red Fir Forest. 1966 Comment
  CAS-BOT-BC236365  Poa secunda subsp. secunda Lowell Ahart 1985-5-15 4996 Butte 1/8 mile E of the dirt road, about 1.5 miles NE of Concow Res. 800 Comment
  CHSC93505  Poa secunda subsp. secunda Lowell Ahart 2006-5-10 12615 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
  CHSC31797  Pogogyne zizyphoroides L. Ahart 1974-4-24 431 Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC66211  Pogogyne zizyphoroides Jane A. Rogers 1979-4-17 13 Butte Intersection of Hwy. 99E and Broyles Rd., 11 mi. N of Chico 55 Comment
  RSA0022186  Pogogyne zizyphoroides A. A. Heller 1938-4-22 15043 Butte On U. S. Highway 99E, near the Cana road. Comment
  CHSC102423  Polygala cornuta var. cornuta Lowell Ahart 2009-5-30 15776 Butte On dry soil, on the south side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  JEPS87156  Polygala cornuta var. cornuta Lowell Ahart 1992-8-2 6913 Butte e of intersection about 1/2 mi n Flea Valley (about 4 1/2 (air) mi ne of Concow Reservoir) 1158 Comment
  JEPS88567  Polygonum amphibium var. emersum Vernon H. Oswald and Lowell Ahart 1996-5-27 7672 Butte U.S. Fish and Wildlife parcel between 7 Mile Lane and Sacramento River (in a ditch between 7 Mile Lane and Tract 6, Sanctuary 2, just n of the equipment parking lot); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  SEINET10479612  Polygonum amphibium var. stipulaceum Mary Susan Taylor 1975-10-3 Taylor 925 Butte At bridge over Little Chico Creek on River Road, ca. 10 mi W of Chico; Ripar ian Woodland disturbed area. 37 Comment
  SEINET10479328  Polygonum arenastrum Mary Susan Taylor 1982-4-28 Taylor 4373 Butte T17N R1E se/ne sec 22. Pennington quad. Graylodge Waterfowl Refuge, around parking lot 5, ca. l mi s of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC112725  Polygonum aviculare Lowell Ahart 2013-10-26 19217 Butte South side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC94653  Polygonum aviculare Lowell Ahart 2006-9-28 13372 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CHSC112247  Polygonum aviculare subsp. aviculare Lowell Ahart 2013-4-29 18658 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CAS-BOT-BC109132  Polygonum bidwelliae A. A. Heller 1927-5-18 14391 Butte Along Neale grade on road from Chico to Paradise. Comment
  CAS-BOT-BC109138  Polygonum bidwelliae David D. Keck 1933-5-31 2470 Butte Bridge crossin Mud Creek, 2.9 miles west of Richardson Springs. Comment
  CHSC103722  Polygonum bidwelliae Lowell Ahart 2010-5-14 16658 Butte In the tracks of an old Road, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 372 Comment
  SEINET10937590  Polygonum bidwelliae Mary Susan Taylor 1980-5-31 Taylor 2769 Butte T22N R4E sw sec 31. Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 2 mi SE of Paradise. With R.A. Schlising and L. Ahart. 442 Comment
  SEINET10479639  Polygonum convolvulus Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4269 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CAS-BOT-BC414416  Polygonum douglasii H. F. Copeland 1920-7-24 18 Butte Meadow by Colby Creek 1828 Comment
  JEPS117421  Polygonum douglasii subsp. douglasii Lowell Ahart 2010-9-28 17250 Butte On damp soil, about 10 yards west of Big Kimshew Creek, under trees, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  SEINET10479466  Polygonum hydropiper Lowell Ahart 1983-9-17 Ahart 4437 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  SEINET10937571  Polygonum hydropiper Lowell Ahart 1985-11-7 Ahart 5234 Butte Lake Oroville, on the north side of the South Fork of the Feather River, about 200 yards north-west of the Ponderosa Dam. Comment
  SEINET10838777  Polygonum kelloggii Mary Susan Taylor 1978-7-19 Taylor 1765 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
  CHSC44226  Polygonum minimum V. Oswald; L. Ahart 1988-7-13 3581 Butte Road to High Lakes e of Philbrook Reservoir. On drier margins of a seep on a steep outcropping of metasedimentary rock on the n side of the road. 1859 Comment
  UC203615  Polygonum persicaria A. A. Heller 1914-8-20 11690 Butte about 5 mi s Pentz; Dry Creek 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
  UC203871  Polygonum polygaloides subsp. kelloggii A. A. Heller 1914-6-22 11490 Butte Chico Meadows Sierra Nevada 1219 Comment
  JEPS108863  Polygonum punctatum Lowell Ahart 2006-10-8 13428 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
  SD1351  Polygonum spergulariiforme E. B. Copeland 1931-7-3 632 Butte Jonesville, Colby Canyon 1550 Comment
  POM22456  Polypodium californicum E. B. Copeland 1902-12-29 2749 Butte Chico Canyon Comment
  SEINET10530405  Polypodium californicum Mary Susan Taylor 1979-12-25 Taylor 2309 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  SEINET10530415  Polypodium californicum Mary Susan Taylor 1980-4-18 Taylor 2513 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 Comment
  CHSC28414  Polypodium calirhiza M. S. Taylor 1979-9-28 2181 Butte Butte county line at Hwy 70, between boundry and Arch Rock tunnel. 487 Comment
  CHSC30737  Polypodium calirhiza M. S. Taylor 1980-5-27 2651 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC34682  Polypodium calirhiza M. S. Taylor 1980-4-1 2420 Butte Along s side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi e of Chico. 121 Comment
  CHSC39843  Polypodium calirhiza Maxey-Jones 1928-3-5 Butte Iron Canyon. Comment
  RSA715711  Polypodium calirhiza L. Ahart 2005-1-20 11472 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  CAS-BOT-BC76830  Polypodium glycyrrhiza M. S. Taylor 1980-4-1 2420 Butte Along S side of Butte Creek, ca. 1/4 mi downstream from Honey Run Covered Bridge, ca. 6 mi E of Chico. 121 Comment
  CAS-BOT-BC233059  Polypogon interruptus Lowell Ahart 1983-6-26 4110 Butte Along Ponderosa Way, ca. 1/8 mile E of the intersection of the Oroville Quincy Highway and Ponderosa Way, ca. 15 miles NE of Oroville 500 Comment
  CHSC47631  Polypogon interruptus Lowell Ahart 1977-6-3 1400 Butte At the water hole, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC92552  Polypogon interruptus Lowell Ahart 2005-12-11 12520 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
  SEINET10602418  Polypogon interruptus A. Arthur Heller 1914-5-19 Heller 11419 Butte Hills 8 miles north of Oroville. Comment
  CAS-BOT-BC232574  Polypogon monspeliensis Lowell Ahart 1980-7-29 2514 Butte Along Forbestown Road 228 Comment
  SEINET10508535  Polypogon viridis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4237 Butte T22N R6E sw sec 36. Ca. 0.5 mi e of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  UCD136477  Polystichum californicum G. F. Hrusa 1997-5-29 13794 Butte Sierra Nevada, Plumas National Forest. Immediately above Sucker Creek, 1.5 miles SSE of Feather Falls. 720 Comment
  CHSC32751  Polystichum imbricans M. S. Taylor 1981-4-14 3530 Butte On s side of Ponderosa Way (Rim Rd.), ca. 2 mi n of Jarbo Gap on Hwy 70, ca. 20 air mi n of Oroville. 883 Comment
  CHSC44607  Polystichum imbricans Vernon Oswald 1982-11-14 15 Butte Near Doon Campground, ca. 1 mi e of Lovelock (Skyway between Paradise and Stirling City). 853 Comment
  CAS-BOT-BC72300  Polystichum imbricans subsp. imbricans Lowell Ahart 1983-7-24 4213 Butte on the road cutbank at the Forbestown Res., about 5 miles northeast of Forbestown 450 Comment
  CHSC46982  Potamogeton foliosus var. foliosus Vernon H. Oswald 1989-9-28 4022 Butte Richardson Springs in the foothills ne of Chico. In a pool in the bed of the East Branch of Mud Creek just above the falls. 213 Comment
  CAS-BOT-BC453700  Potamogeton illinoensis Lowell Ahart 1977-9-8 s.n. Butte Peter Ahart Ranch, Honcut. In North Honcut Creek. 50 Comment
  CHSC43803  Potamogeton natans Vernon Oswald 1987-7-29 3168 Butte Southwestern most lake in a cluster of three located in the se/S6, ca. 0.5 mi (air) s of Coon Hollow Rd. and 2.5 mi (air) n of Philbrook Reservoir. 1752 Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  CHSC12001  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville. 1550 Comment
  UC481577  Potentilla millefolia H. F. Copeland 1931-6-11 1535 Butte Butte Creek Meadows , Jonesville 1828 Comment
  CHSC113324  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 249 Comment
  JEPS122064  Potentilla rivalis Lowell Ahart 2014-5-21 19527 Butte South bank of river, where Sucker Creek flows into the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. Comment
  CHSC28731  Proboscidea louisianica M. Banchero; R. Schlising, R. Banchero 1979-9-23 45 Butte SW of Chico, along Ord Ferry Road, 3.7 mi W of jct Ord Ferry and Goodspeed--Watt Roads (= Dayton Four Corners). Comment
  CHSC13708  Proboscidea lutea M. S. Taylor; K. Stern 1974-10-11 328 Butte Scarce in weed field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC43835  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-19 2226 Butte Along Sly Cr where rd from Challenge-LaPorte Rd rd to SE side of Sly Cr Reservoir crosses; 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  CHSC52063  Prunella vulgaris var. lanceolata B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 148 Butte 0.95 mi into Coon Hollow below Campground, by edge of Coon Creek and on edge of adjacent meadow. 1664 Comment
  UC139772  Prunella vulgaris var. lanceolata Mrs. R. M. Austin July 1896 566 Butte Colby Comment
  CHSC38931  Prunus cerasifera Vernon Oswald 1983-6-27 777 Butte Upper Bidwell Park, Chico, on the n edge of Upper Park Rd. 0.2 mi e of the end of the pavement. 91 Comment
  UC478508  Prunus emarginata E. B. Copeland 1931-7-28 650 Butte w of North Willow Creek (Jonesville); Jonesville 1650 Comment
  CHSC97356  Prunus virginiana var. demissa Paul Maslin 2005-5-5 51 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 106100198E 4411262N. 268 Comment
  CHSC88073  Pseudognaphalium californicum R. D. Fischer 2004-6-6 159 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located just within park property at the 10 Mile House Road parking area off Hwy 32, on ridge top. 464 Comment
  CHSC21054  Pseudognaphalium luteoalbum M. S. Taylor 1975-4-25 503 Butte On Cohassett Hwy, ca. 1/2 mi n of Horse trough, ca. 20 mi ne of Chico. Comment
  CAS-BOT-BC357235  Pseudognaphalium microcephalum Lowell Ahart 1988-9-4 6176 Butte A little north of a branch of Last Chance Creek, about 1 mile west and a little north of Bald Mountain 1005 Comment
  UCD149980  Pseudognaphalium stramineum E. Littrell 1972-5-8 s.n. Butte Gray Lodge Wildlife Area. Comment
  CHSC41999  Pseudognaphalium thermale Lowell Ahart 1975-9-4 973 Butte Along the South Fork of the Feather River, about 1/2 mile north of the Golden Trout Crossing, about 15 miles north of Feather Falls. 762 Comment
  CHSC46923  Pseudognaphalium thermale Lowell Ahart 1980-7-29 2493 Butte Along the edge of Swedes Flat Road, about 1 1/2 miles east of the Bangor Oroville, Highway, near Bangor. 304 Comment
  POM36283  Psilocarphus oregonus C. C. Bruce 1897-06 2113 Butte Chico Comment
  CHSC46966  Psilocarphus tenellus var. globiferus Lowell Ahart 1979-5-11 1867 Butte In a grain field, Peter Ahart Ranch, about 2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC35075  Pterospora andromedea R. A. Schlising 1980-7-25 3919 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  UCD117755  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville. 1550 Comment
  SEINET10452826  Punica granatum Mary Susan Taylor Taylor 779 Butte Weedy or cultivated plants of Chico. 61 Comment
  CHSC97336  Pycnanthemum californicum L. P. Janeway 2007-8-6 9152 Butte Northern High Sierra Nevada. Plumas National Forest; Hughes Place, at head of eastern side drainage of Chino Creek and near head of Jack Creek, at break between Chino Ridge and Swayne Hill; 3.5 km north of mouth of French Creek at North Fork Feather River arm of Lake Oroville. At an old abandoned farm or small lumber mill pond in an opening in mixed conifer forest. Large patch of this on slope next to east side of pond. 776 Comment
  CAS-BOT-BC462606  Pyrola dentata E. B. Copeland 1931-7-15 669 Butte Jonesville 1700 Comment
  CHSC27200  Pyrus P. Moyer 1971-2-1 84 Butte CSUC Campus. E face of Bus.-Soc. Sci. Bldg. 60 Comment
  CAS-BOT-BC105030  Quercus X morehus Lowell Ahart 1976-7-15 s.n. Butte Near edge of North Honcut Creek, 2 miles N and 3 miles E of Honcut 200 Comment
  JEPS119539  Quercus X morehus Lowell Ahart 2012-4-20 17894 Butte About 100 yards west of the intersection of Ten Mile House Road and South Rim Trail, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  UC2026893  Quercus acutissima Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18001 Butte On the west side of the horse path, about 20 yards north of the paved park road, west of the old walnut orchard, south Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UC1135513  Quercus berberidifolia J. E. Sowder, C. G. Albertus 1933-6-26 94 Butte 1 mi ne Nelson's Bar; Chico Quad. 457 Comment
  CHSC108976  Quercus chrysolepis Lowell Ahart 2012-4-30 17930 Butte On the south side of South Rim Trail, about 1/2 mile southwest of the old homestead, pond, and Ten Mile House road, about 3/4 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 269 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
  CHSC39794  Quercus chrysolepis Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  CHSC104826  Quercus douglasii Lowell Ahart 2010-6-1 16762 Butte On the north side of the Guardians Trail, about 1/8 mile west of the power lines, Upper Bidwell Park, about 1 3/4 miles (air) east of Chico. 172 Comment
  CHSC38446  Quercus douglasii Vernon Oswald 1983-5-21 514 Butte Upper Bidwell Park, Chico, on the north rim at the level of Horseshoe Lake. 152 Comment
  SFV8712  Quercus douglasii K. Corson 1969-4-6 26 Butte Upper Park Road of Big Chico Canyon, 8 miles northwest of Chico. Comment
  SEINET13953256 Image available Quercus dumosa A. A. Heller 1916-1 12650 Butte Ten mile house east of Chico in the digger pine belt in thin red clay soil, the rocks igneous. Comment
  CHSC32633  Quercus durata var. durata M. S. Taylor; L. Hanson 1981-4-2 3476 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, in steep serpentine slope, ca. 3/4 mi (downhill) ne of Magalia. 548 Comment
  UCD169291  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 759 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  SACT002720  Quercus vacciniifolia Mary Johnson 1934/08/00 Butte Showing insect galls. 1500.0 Comment
  CHSC4566  Ranunculus aquatilis var. capillaceus C. Glascock 1965-1-27 202 Butte In water. Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  CAS-BOT-BC379114  Ranunculus aquatilis var. diffusus E. B. Copeland 1929-7-28 360 Butte Jonesville 1500 Comment
  UCD95868  Ranunculus aquatilis var. diffusus M. S. Taylor; L. Ahart 1981-8-15 4183 Butte in and along West Branch Feather River, 3.4 miles SW of Snag Lake, ca. 11 miles NE of Stirling City. 1615 Comment
  CHSC118055  Ranunculus arvensis Daphne K. Christopher; Hannah Stevens, Lowell Ahart 2003-4-21 227 Butte Off Hwy 99. Ahart Family Ranch along boundary on access road and edge of field. 41 Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  CAS-BOT-BC378989  Ranunculus arvensis 1976-4-16 s.n. Butte Humbug Road, at Chico Comment
  CDA3502  Ranunculus arvensis Sterling O. Mattoon 1971-4-24 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  SD129646  Ranunculus bonariensis var. trisepalus Barbara Ertter, Lowell Ahart 1986-4-13 5901 Butte ca 2 airmiles NNE of Honcut between Oroville and marysville, Peter Ahart Ranch 29 Comment
  CHSC52948  Ranunculus canus Vernon Oswald 1983-2-14 73 Butte Upper Bidwell Park, Chico, on the s side of Upper Park Rd. about 0.7 mi e of the power lines. 115 Comment
  CHSC52791  Ranunculus flammula R. Preston; R. A. Schlising 1982-8-26 4371 Butte N part of county, at Coon Hollow, n of Philbrook Reservoir. In margin of small lake. 1755 Comment
  RSA754585  Ranunculus hebecarpus L. Ahart 2009-4-22 15592 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
  HSC72759  Ranunculus hystriculus M. S. Taylor, Timothy B. Devine, M. Merryman 1981-2-11 3382 Butte 50 ft. E of Lumpkin Rd., on N slope of Macabes Creek, 2 mi. N of junction of Lumpkin Rd. and Hwy 162, 13 mi. NE of Oroville 457 Comment
  POM99305  Ranunculus hystriculus C. C. Bruce 1897-02 1891 Butte Little Chico. Comment
  JEPS84920  Ranunculus muricatus Barbara Ertter with Lowell Ahart 1986-4-13 5888 Butte ca 2 air mi nne Honcut (between Oroville and Marysville); Peter Ahart Ranch 30 Comment
  UC600474  Ranunculus occidentalis H. F. Copeland 1930-7-25 Butte So. Willow Creek Jonesville 1828 Comment
  RSA268750  Ranunculus occidentalis var. ultramontanus Lyman Benson 1932-7-28 3968 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC41522  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 320 Butte E of Snag Lake; in meadow. 1731 Comment
  CHSC52693  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 316 Butte S of Butte Creek House ca. 32 air miles ne of Chico; in meadow. 1828 Comment
  CHSC11812  Ranunculus populago E. B. Copeland 1930-6-25 640 Butte Jonesville. 1500 Comment
  CHSC43545  Ranunculus sceleratus Lowell Ahart 1982-5-10 3432 Butte In our rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 38 Comment
  CHSC52695  Ranunculus uncinatus var. parviflorus Kirsten Tarp 1982-7-28 233 Butte Near Pulga. 731 Comment
  CHSC38048  Raphanus raphanistrum R. E. Preston 1983-1-9 378 Butte On levee of irrigation ditch, w side of Aguas Frias Rd ca. 0.9 mi n of Richvale Rd, ca. 6 mi w of Richvale. 27 Comment
  CAS-BOT-BC59570  Rhamnus John Thomas Howell 1975-6-15 51118 Butte Sierra Nevada - Paradise - Skyway near Billie Road 609 Comment
  CAS-BOT-BC59877  Rhamnus ilicifolia John Thomas Howell; Gordon H. True 1966-7-13 41868 Butte Brush Creek Canyon grade on Cherry Hill Road. 1645 Comment
  CAS-BOT-BC59883  Rhamnus ilicifolia A. A. Heller 1915-4-20 11847 Butte 2 mi. below Centerville in the Sierra Foothills. Comment
  UC1121842  Rhamnus ilicifolia J. E. Sowder 1933-11-27 132 Butte near Hog Spring; Chico Quad. 243 Comment
  UC175332  Rhamnus purshiana A. A. Heller 1913-6-7 10821 Butte near Stirling; West Branch of the North Fork of Feather River 914 Comment
  UC80127  Rhamnus rubra Mrs. M. Austin Jun 1896 642 Butte n of Chico (Forest Ranch and mountains) Comment
  SEINET10493611  Rhamnus rubra subsp. obtusissima Mary Susan Taylor 1980-5-8 Taylor 2601 Butte T24N R3E e half nw sec 33. Paradise quad. Ca. 3 mi N of Forest Ranch, ca. 1 mi E of Hwy 32; area soon to be deve loped; Yellow Pine Forest. 853 Comment
  CHSC1526  Rhamnus tomentella subsp. tomentella L. Stone 1930-4-20 Butte Lower Big Chico Creek canyon. 121 Comment
  CHSC33718  Rhamnus tomentella subsp. tomentella M. S. Taylor 1981-4-8 3505 Butte Serpentine ridge on n side of logging landing site just w of power lines, off logging road ca. 0.5 mi w of its jct with Ponderosa Way, ca. 5 mi n of its jct with Hwy 70 at Jarbo Gap. 883 Comment
  RSA726311  Rhynchospora capitellata L. Ahart, L. P. Janeway, L. Hanson 2007-7-10 14278 Butte About 250 yards east of Bean Creek Road, northeast of Little Bald Rock, about 16 miles (air) northeast of Oroville. 1025 Comment
  SEINET10482917  Ribes amarum Mary Susan Taylor 1980-4-18 Taylor 2505 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  LA205411  Ribes cereum E. B. Copeland; 1931-6-11 sn Butte Kirby's Meadow, Jonesville 1800.0 Comment
  CAS-BOT-BC212666  Ribes nevadense Mrs. J. H. Morrison 1927-7-2 1591 Butte Mountains above Durham Comment
  CHSC11904  Ribes roezlii E. B. Copeland 1931-5-9 648 Butte Jonesville. 1500 Comment
  CAS-BOT-BC173954  Ribes viscosissimum A. A. Heller 1915-6-26 12032 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  SEINET13942866 Image available Ribes viscosissimum A. A. Heller 1915-1 12032 Butte Summit of the Sierra Nevada above Jonesville, elevation 7000 feet, on the summit of a ridge about rocks. 2134 Comment
  CHSC76515  Ricinus communis Vernon H. Oswald 1999-11-14 9840 Butte Near the southwest corner of the Chico Sewage Treatment Plant on Chico River Rd. Rancho de Farwell. 39 Comment
  CAS-BOT-BC362953  Rigiopappus leptocladus John Thomas Howell 1962-6-16 37594 Butte Feather River West Branch sw. of Nelson Bar 304 Comment
  CAS-BOT-BC362956  Rigiopappus leptocladus A. A. Heller 1914-5-8 11372 Butte Plateau above Clear Creek on the Paradise road. Clear Creek-Paradise grade Comment
  CHSC45291  Robinia pseudoacacia Vernon Oswald 1987-4-22 2339 Butte Butte Creek Reserve on the n side of Butte Creek e of Hwy 99. 68 Comment
  CHSC87547  Robinia pseudoacacia R. D. Fischer 2004-3-5 70 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Found next to parking area at 10 Mile House Road leading into the park. 502 Comment
  JEPS115290  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
  CHSC11077  Rorippa curvisiliqua var. occidentalis Lowell Ahart 1970-4-20 Butte Earnist Bevan Farm, near Honcut. 45 Comment
  CHSC90958  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2005-4-18 11741 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CHSC36686  Rorippa curvisiliqua var. orientalis R. E. Preston; L. E. Preston 1982-7-20 344 Butte Bed of stream; in meadow, ca. 1 mi s of Humbug Summit, ca. 4 1/2 miles ese of Jonesville. 1950 Comment
  CHSC69715  Rorippa curvisiliqua var. orientalis Lowell Ahart 1997-10-24 7937 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CHSC98956  Rorippa curvisiliqua var. orientalis Lowell Ahart 2008-5-12 14730 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
  CHSC48342  Rorippa palustris var. hispida Vernon Oswald 1987-6-5 2955 Butte East side of Sacramento River just n of Golden State Island (perhaps now technically in Glenn County because of shifting channel). 33 Comment
  CHSC43212  Rosa bridgesii L. P. Janeway 1987-6-19 2240 Butte Side ravine south from Sly Cr; 1.6 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  POM365846  Rosa bridgesii M. M. Boney 1897-1 1724 Butte [No location information provided.] Comment
  CHSC43214  Rosa gymnocarpa L. P. Janeway 1987-5-28 2115 Butte Along spur road from Coyote Gap to the F.S. Station. 1325 Comment
  CHSC106059  Rosa multiflora Lowell Ahart; Susan Mason, Josephine Guardino 2010-8-6 17042 Butte In landscaping, at Five Mile Recreation Area, Bidwell Park, Chico. 74 Comment
  CHSC116569  Rosa multiflora B. Castro 2016-4-15 2131 Butte Sacramento Valley. At N end of Chico, just S of the Chico Airport, along Sycamore Creek, ca -.4 mi downstream (W) of its crossing under the Cohasset Hwy bridge. At moist lowest edge of bank on N side of channel, near a large cottonwood tree roughly opposite the confluence of Dry Creek. 55 Comment
  UC1562359  Rosa pisocarpa Vernon Oswald and Lowell Ahart 1990-7-5 4346 Butte camping area on creek along F-line Butte Creek (0.4 mi sw of Humboldt Rd, ca 1.5 mi wsw of Butte Meadows) 1316 Comment
  CHSC27239  Rosmarinus officinalis P. Moyer 1971-9-26 10 Butte CSUC Campus. SE corner of cafe annex. 60 Comment
  CAS-BOT-BC274228  Rostraria cristata Lowell Ahart 1977-5-21 1511 Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC274231  Rostraria cristata A. A. Heller 1902-5-13 5534 Butte Grade between Clear Creek and Paradise Comment
  CHSC60996  Rotala ramosior Lowell Ahart 1993-6-13 6959 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  UC1586509  Rotala ramosior Vernon H. Oswald and Lowell Ahart 1991-8-28 4849 Butte 3.5 mi nw of Biggs (Rice Experimeent Station on s side of Highway 162); Rice Experimeent Station, Highway 162 30 Comment
  POM366458  Rubus discolor L. Ahart, P. Ahart 1984-6-10 4716 Butte About 2 miles SW of Forbestown Diversion Dam. NE of Forbestown. 700 Comment
  CAS-BOT-BC147106  Rubus glaucifolius A. A. Heller 1914-7-23 11618 Butte On the borders of Chico Meadows 1219 Comment
  CAS-BOT-BC148351  Rubus laciniatus Clarence R. Quick 1962-8-19 62 -81 Butte Coyote Gap-Four Trees Road, Plumas National Forest Comment
  CAS-BOT-BC148368  Rubus leucodermis Lowell Ahart 1985-7-9 5120 Butte Along the dirt road, about 1/4 mile south of the bridge across Fall River, east of Fall River, about 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-est of Feather Falls 914 Comment
  CAS-BOT-BC147200  Rubus parviflorus E. B. Copeland 1930-7-16 419 Butte Jonesville 1600 Comment
  CHSC44231  Rubus pensilvanicus Vernon Oswald 1988-6-30 3541 Butte Hwy 32, 1.1 mi s of Lomo at the 35.9 mile post. 1146 Comment
  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
  POM91605  Rubus vitifolius C. C. Bruce 1898-05 1793 Butte One valley, two mountains. Comment
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Mar 5 2011
  SEINET10937266  Rubus vitifolius Mary Susan Taylor 1976-4-4 Taylor 1061 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
  POM261228  Rudbeckia occidentalis E. B. Copeland 1939-8-7 s.n. Butte Jonesville. Comment
  CHSC42974  Rumex acetosella Lowell Ahart 1987-7-8 5802 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC99475  Rumex acetosella Lowell Ahart 2008-6-13 14831 Butte About 5 yards north of Oregon Gulch, about 50 yards west of the road culvert across Oregon Gulch, bottom of an old gold mined area, about 150 yards south of the cemetery, about 10 miles (air) northeast of Oroville. 305 Comment
  CAS-BOT-BC421911  Rumex acetosella Javier Penalosa 1962-6-18 2460 Butte Near confluence of French and Peavine Crks. 609 Comment
  UCD101106  Rumex conglomeratus W. R. Powell 1968-5-6 1480 Butte 1.8 miles north-northeast of Bangor. 342 Comment
  JEPS127063  Rumex crispus Lowell Ahart 2016-5-14 20827 Butte 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 11miles (air) southeast of Oroville. Comment
  CAS-BOT-BC421619  Rumex crispus Lowell Ahart 1979-6-2 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CHSC103944  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  JEPS114700  Rumex salicifolius var. salicifolius Lowell Ahart 2008-6-13 14832 Butte on the bottom of Oregon Gulch, about 50 yds W of the road culvert across Oregon Gulch, about 150 yds S of the cemetery, about 10 mi (air) NE of Oroville 305 Comment
  CAS-BOT-BC434166  Rumex triangulivalvis John Thomas Howell 1962-6-16 37563 Butte Magalia 731 Comment
  CHSC45579  Sagina apetala Lowell Ahart 1980-5-4 2215 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
  CHSC98975  Sagina decumbens subsp. occidentalis Lowell Ahart 2008-5-12 14732 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
  CHSC112722  Sagina saginoides Lowell Ahart 2013-10-26 19211 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC51375  Sagittaria latifolia Vernon Oswald; Mary Bailey 1990-8-23 4442 Butte Durham Mutual Ditch just south of Butte Creek, ca. 0.25 mi north of Hwy 99 in south Chico. 67 Comment
  UC935746  Sagittaria latifolia Herbert L. Mason and Verne Grant 1946-8-14 13020 Butte Butte Sink; canal near big pond on Sacramento Outing Club Comment
  RSA69605  Sagittaria latifolia F. W. Peirson 1926-6-20 6759 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  CHSC52143  Sagittaria longiloba L. P. Janeway 1988-6-12 2758 Butte Corner of rice field near jct of hwy 162 and Midway; 2 mi S of Richvale. 28 Comment
  CAS-BOT-BC445808  Sagittaria montevidensis C. Epling; Wm. Robison 1935-7-27 s.n. Butte Near Chico Comment
  CHSC93977  Salix exigua R. D. Fischer 2004-6-20 772 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Along water edge at south end of pond. 1371 Comment
  JEPS107367  Salix exigua Lowell Ahart 2005-4-14 11709 Butte East of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  SEINET10965409  Salix exigua Mary Susan Taylor 1982-5-22 Taylor 4498 Butte T17N R1E se/se sec 3. Pennington quad. Graylodge Wildlife Refuge, Riparian Woodland at end of West Liberty Rd, ca. 12 mi sw of Gridley. 63 ft. 19 Comment
  CHSC9693  Salix exigua var. exigua E. L. Smith 1971-9-12 1065 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC437339  Salix exigua var. hindsiana W. P. Taylor 1912-6-6 Butte 4 mi se Chico (Butte Creek) Comment
  CHSC108871  Salix gooddingii Lowell Ahart 2012-3-23 17794 Butte Spring like area at the old homestead, about 30 yards southwest 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
  UC176210  Salix laevigata A. A. Heller 1913-4-4 10694 Butte levee at Oroville Comment
  LA208811  Salix lasiandra E. B. Copeland; 1931-6-10 619 Butte Jonesville 1500.0 Comment
  CAS-BOT-BC125181  Salix lasiandra var. lasiandra Lowell Ahart 1982-5-8 3408 A Butte Near Forbestown Reservoir 800 Comment
  JEPS107338  Salix lasiandra var. lasiandra Lowell Ahart 2005-4-2 11695 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  CHSC65014  Salix lasiolepis Vernon Oswald 1987-4-22 2342 Butte Butte Creek Reserve between the creek and Durham Mutual Ditch, NE of Hwy 99. 68 Comment
  CHSC7061  Salix lasiolepis Lynn R Thomas 1969-5-8 112 Butte Bidwell Ave., 0.15 mi e of Rose Ave. bridge, Chico. 60 Comment
  HSC104023  Salix lasiolepis L. Ahart 2012-2-22 17750 Butte About 9 air mi. NE of Chico, ~ 5/8 mi. W of Hwy. 32, edges of the pond at the old homestead 259 Comment
  JEPS119783  Salix lasiolepis Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18005 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC129578  Salix lasiolepis var. lasiolepis A. A. Heller 1913-4-5 10695 Butte Hills, north side of the Feather River above Oroville Comment
  CHSC9695  Salix lasiolepis var. lasiolepis E. L. Smith 1971-9-12 1067 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC600412  Salix lemmonii E. B. Copeland 1931-5-9 Butte Jonesville 1500 Comment
  SBBG27414  Salix ligulifolia E. B. Copeland 1931-6-9 Butte Jonesville, near head of N Willow Crk 1550 Comment
  CHSC42542  Salix lucida subsp. lasiandra Lowell Ahart 1987-5-22 5684 Butte About 1/8 mile north-east of Camp 18, about 6 1/2 miles north-east of Feather Falls. 1219 Comment
  CHSC46407  Salix lucida subsp. lasiandra Lowell Ahart 1989-5-29 6317 Butte Along the gravel road to the Forbestown Reservoir, about 1 1/2 miles north-east of Forbestown Road, about 3 miles north-east of Forbestown. 792 Comment
  CHSC42544  Salix melanopsis Lowell Ahart 1987-5-6 5539 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  CHSC59109  Salvia sonomensis L. P. Janeway; B. Castro 1992-5-3 4155 Butte Forest Ranch, 1 1/2 mi south of Platte Mtn; junction of Headwaters Road and Homeplace Loop (just off Hwy 32). 960 Comment
  CHSC3773  Sambucus mexicana R. L. Adams 1964-4-12 75 Butte Found 1/4 mile S of junction of River road and highway 32 on E. side of road next to a barn. Comment
  RSA755771  Sambucus mexicana L. Ahart 2009-5-30 15807 Butte East side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 air mile southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 412 Comment
  UC1575631  Sambucus mexicana Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2095 Butte near Chico Comment
  SEINET12319556  Sambucus mexicana Unknown 1977-1 25 Butte ca.2 mi NW of Chico on W side of Hwy99. Richardson Springs Quadrangle Comment
  CHSC50544  Sambucus racemosa var. microbotrys Vernon Oswald; Lowell Ahart 1990-6-20 4309 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1965 Comment
  CHSC4020  Sanicula bipinnatifida E. P. Parreno 1967-4-3 Butte Tabletop Mountain. Comment
  SEINET10939830  Sanicula crassicaulis Lowell Ahart 1984-4-3 Ahart 4540 Butte T17N R4E sec 1. Along North Honcut Creek, ca. 1 mile N and 2.7 miles E of Honcut; on Peter Ahart Ranch. Foothill Woodland; 50 m. 50 Comment
  UC875484  Sanicula graveolens A. A. Heller 1917-7-29 12856 Butte summit above Jonesville 2133 Comment
  CHSC11874  Sanicula tuberosa E. B. Copeland 1929-7-20 389 Butte Jonesville. 1550 Comment
  CHSC83902  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  UCR66432  Sanicula tuberosa H. F. Copeland 1931-6-9 1524 Butte Jonesville, near Jones Creek 1529 Comment
  SEINET10454590  Sanicula tuberosa Mary Susan Taylor 1981-3-31 Taylor 3461 Butte T23N R4E center sec 36. Pulga SW quad. S side of Ponderosa Way (Rim Rd), ca. 1/4 mi se of its jct with Concow Rd, ca. 20 air mi n of Oroville; 3200 ft. 975 Comment
  CHSC43659  Sapium sebiferum Vernon Oswald 1987-7-8 3098 Butte Butte Creek Reserve, on the north side of Butte Creek east of the Skyway, east of Chico. On the edge of the creek. 73 Comment
  CHSC42388  Saponaria officinalis Lowell Ahart 1987-6-9 5725 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
  CHSC43274  Saponaria officinalis Lowell Ahart 1987-8-30 5864 Butte On gravel bars along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  UC478456  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CHSC62566  Satureja douglasii B. Castro; J. Jurewicz 1993-7-8 476 Butte Ca 1.6 mi S of Brush Creek via Bald Rock Rd, at head of drainage basin on W-facing slope. 975 Comment
  UC1594731  Saxifraga bryophora Lowell Ahart 1992-7-26 6857 Butte about 1/4 mi ne of the Carr Mine (about 2 air mi se of Snow Mountain) 1798 Comment
  RSA715723  Saxifraga integrifolia L. P. Janeway 2005-3-1 8336 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Rd. 1.8 km northeast of Bruce Road. 134 Comment
  CHSC45886  Scandix pecten-veneris Lowell Ahart 1974-4-11 371 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC85710  Schoenoplectus mucronatus G. F. Hrusa; T. D. Wilfred 1996-9-5 13563 Butte Butte Basin. In rice fields adjacent to Durnel Road north of Nelson Rd. [Lat./Long. on label is '39 degrees 34' N; 121 degrees 39' W']. 33 Comment
  CAS-BOT-BC111832  Schoenoplectus tabernaemontani John Thomas Howell 1961-9-22 36724 Butte Bank of Feather River, Oroville. 53 Comment
  UC1100774  Scirpus acutus var. occidentalis Herbert L. Mason, Verne Grant 1946-8-14 13031 Butte canal near big pond on Sacramento Outing Club (Butte Sink); Butte Sink Comment
  CHSC56794  Scirpus congdonii L. P. Janeway; R. A. Schlising 1988-7-22 3066 Butte Upper canyon of Philbrook Creek, 0.7 mi west of the pass. 1889 Comment
  CAS-BOT-BC30730  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  CAS-BOT-BC5833  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  CHSC11928  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville. 1550 Comment
  UC600702  Scirpus diffusus H. F. Copeland 1928-8-17 1072 Butte Jonesville 1524 Comment
  SEINET7546616  Scirpus diffusus E. B. Copeland 1929-1 343 Butte Jonesville 472 Comment
  SEINET10467275  Scirpus koilolepis Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4048 Butte T20N R5E n half sec 36. Ca. 1 mi s of Crystal Hill, n of Oregon Gulch, near Lake Oroville, ca. 7 mi sw of Feather Falls. Yellow Pine Forest. Comment
  CHSC103745  Scribneria bolanderi Lowell Ahart 2010-5-22 16714 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 392 Comment
  JEPS115817  Scribneria bolanderi Lowell Ahart 2009-4-26 15632 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/4 mile west of the intersection of Highway 32 and Ten Mile House Road, on the east side of Ten Mile House Road, just northeast of Guardians Trail 381 Comment
  CHSC42832  Scutellaria californica L. P. Janeway 1987-5-20 2074 Butte Along hwy 70 1.7 mi NE of Pulga bridge; N Fk Feather River at Poe Dam. 472 Comment
  RSA718334  Scutellaria californica L. Ahart 2006-6-9 12658 Butte North side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.75 miles (air) southwest of Pulga. 386 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
  RSA445330  Scutellaria siphocampyloides M. M. Boney 1897-1 1724 Butte [No location information on label.] Comment
  CHSC796  Scutellaria tuberosa M. Davidson 1929-3-22 Butte Near Paradise. 457 Comment
  CHSC6149  Secale cereale E. Parreno 1968-5-10 91 Butte Vacant lot bordered by Lindo Channel and Manzanita Ave. and opposite to area bounded by Calcewood Way and Ceanothus Ave., Chico. 59 Comment
  CHSC30874  Sedella pumila J. D. Jokerst 1979-4-2 1174 Butte Top of North Table Mt, ca 200 m S of Cherokee Rd where it intersects the E edge of section 17. 396 Comment
  CHSC39596  Sedella pumila Lowell Ahart 1983-4-10 3932 Butte About 1/2 mile north-east of Highway 99 and Pentz Road. 65 Comment
  CHSC84128  Sedella pumila Lowell Ahart 2003-4-10 10082 Butte Near the easat side of the 'sunken area,' about 150 yards west of the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 320 Comment
  SEINET10449668  Sedum albomarginatum Mary Susan Taylor 1981-5-11 Taylor 3687 Butte T22N R5E ne sec 6, Pulga quad. N side of Feather River Hwy 70, at jct with Pulga Rd and Pulga bridge, in rocky red serpentine cliff. 1600 ft. 488 Comment
  CAS-BOT-BC62116  Selaginella hansenii Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CAS-BOT-BC62117  Selaginella hansenii Lowell Ahart 1961-3-3 s.n. Butte Salmon Hole, Chico 91 Comment
  CHSC41990  Selaginella hansenii Lowell Ahart 1976-4-17 1082 Butte Along the trail to Feather Falls, near the Feather Falls overlook, about 5 miles north of Feather Falls. 609 Comment
  SEINET10530438  Selaginella hansenii Mary Susan Taylor 1980-2-24 Taylor 2322 Butte T23N R2E nw 1/4 sec 21. On bluffs overlooking the waterfall on E branch of Mud Creek, ca. 1/4 mi upstream from Richardson Springs Hotel, ca. 6 mi NE of Chico. 244 Comment
  RSA755636  Selaginella wallacei Lowell A. Ahart, John Dittes, Steve Green 2009-1-17 15473 Butte Large rock on the south side of Guardian Rock Trail, about 20 yards west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 322 Comment
  SEINET10530444  Selaginella wallacei Mary Susan Taylor 1980-3-8 Taylor 2370 Butte Pulga community, ca. 1 mi NE of Hwy 70, ca. 28 mi NE of Oroville; serpentine soils. 488 Comment
  SEINET10839468  Selaginella wallacei Lawrence P. Janeway 1984-10-7 Janeway 1178 Butte Brush Creek quad T21N R6E SE 1/4 of sec. 30, 3200 feet. 975 Comment
  CHSC12107  Senecio aronicoides J. M. Pitts 1972-4-19 154 Butte 20 yards se of Humbug Rd. 7.9 mi ne past Honeyrun Bridge. 426 Comment
  UC472365  Senecio aronicoides H. M. Hall 1912-5-26 Butte Stirling City Sierra Nevada Mountains Comment
  UC492747  Senecio aronicoides H. F. Copeland 1929-6-9 1254 Butte Jonesville 1524 Comment
  NY233354  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 miles south of Pulga 609.6 Comment
  CAS-BOT-BC364273  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville 1550 Comment
  CHSC47665  Senecio triangularis Lowell Ahart 1989-9-21 6389 Butte On the west side of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  RSA4450  Senecio triangularis E. B. Copeland 1931-7-4 699 Butte Jonesville. 1550 Comment
  JEPS115244  Senecio vulgaris Lowell Ahart 2009-4-3 15523 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  JEPS116118  Senecio vulgaris Lowell Ahart, John Dittes 2009-3-20 15502 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  SEINET10839272  Senecio vulgaris Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4867 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  SEINET10929339  Sequoiadendron giganteum Mary Susan Taylor 1975-5-6 Taylor 562 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  UC128826  Sericocarpus oregonensis subsp. californicus Miss Kate Conger 1907-1-1 151 Butte Brush Creek Comment
  CHSC94676  Setaria parviflora Lowell Ahart 2006-9-28 13383 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
  RSA724851  Setaria parviflora L. Ahart 2006-9-28 13383 Butte on the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  RSA724863  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley, Shallow arm of Thermalito Afterbay, 150 m east of Wilbur Road, 2.1 km south of Hwy 162. 41 Comment
  CDA13845  Setaria pumila G. F. Hrusa, T. D. Wilfred 1996-9-6 13573 Butte Butte Basin; Bank on E side of Butte Creek approx. 1/2 mi. NE of confluence with Howard Slough, and immed. below McPherrin Dam (private and scheduled for removal). Plant 1 meter tall, uncommon here. Comment
  CAS-BOT-BC240115  Setaria sphacelata Lowell Ahart 1985-10-12 5199 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise 301 Comment
  CHSC30872  Sherardia arvensis J. D. Jokerst 1979-4-2 1175 Butte Top of North Table Mt along the sides of Cherokee Rd at the East side of the Mt. Comment
  CHSC47483  Sherardia arvensis Lowell Ahart 1974-4-7 356 Butte About 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  SEINET12631572  Sherardia arvensis B. Ertter, J. Strachan 1980-5-5 3261 Butte Peter Ahart Ranch; ca 1.5 mi NE of Honcut between Oroville and Marysville 30 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
  CHSC13724  Sidalcea calycosa J. G. Moore 1969-4-13 141 Butte Stilson Canyon Rd., 1.4 mi. se of jct. with Bruce Rd., Chico. Comment
  CHSC34960  Sidalcea calycosa R. A. Schlising; R. Banchero 1981-5-19 4050 Butte NW of Oroville. 3.5 mi E of jct with Highway 99, along Cottonwood Road. Comment
  CHSC43352  Sidalcea calycosa Lowell Ahart 1979-5-29 1897 Butte On both sides of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 487 Comment
  UC725427  Sidalcea calycosa A. A. Heller 1942-5-27 16479 Butte Clark Road , Clark Road (Clear Creek Schoolhouse) Comment
  CHSC43354  Sidalcea diploscypha Lowell Ahart 1978-5-30 1745 Butte About 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  UC1586587  Sidalcea diploscypha Vernon H. Oswald and Lowell Ahart 1991-5-31 4635 Butte on the sw side Glen Pond (Dan Beebe Trail in the Lake Oroville State Recreation Area, on the s side of Thermalito Diversion Pool); Lake Oroville State Recreation ARea, sw side Glen Pond Comment
  CHSC1060  Sidalcea glaucescens V. Holt 1935-8-1 Butte De Sabla. 762 Comment
  JEPS117413  Sidalcea glaucescens Lowell Ahart 2010-9-28 17246 Butte Along the east side of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC2830  Sidalcea hartwegii David Prall 1965-3-28 17 Butte In a field east of Meridian Rd, 8 miles NE of HW. 99E north of Chico. Comment
  CHSC42236  Sidalcea hartwegii Steve Holloway 1986-4-18 25 Butte 20 m w of Hwy 32, 15.6 km ne of Chico. 540 Comment
  JEPS115593  Sidalcea hartwegii Lowell Ahart 2009-4-22 15583 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
  HSC87160  Sidalcea hartwegii S. T. Heaston 1982-4-8 17 Butte SE of Chico, 7 mi. SE of the junction of Hwy. 99 and Skyway, 100 m S off of Skyway 305 Comment
  UC1594540  Sidalcea hirsuta Lowell Ahart 1992-5-23 6771 Butte n side of Biggs Princeton Road about 2 mi w Biggs; w of Biggs 30 Comment
  UC725525  Sidalcea hirsuta A. A. Heller 1927-5-3 14362 Butte ten mi n Chico; ten mi n of Chico Comment
  CDA36504  Sidalcea malviflora subsp. asprella T. C. Fuller 1970-4-17 19389 Butte 114 Putnam Dr., east above Oroville. 0 Comment
  CHSC101171  Sidalcea robusta Lowell Ahart 2009-5-15 15681 Butte 10 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
  CHSC77818  Sidalcea robusta Tim Stofer 2000-4-20 20 Butte On the east side of the trail 1/2 mi. from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 91 Comment
  UC138306  Sidalcea robusta Mrs. R. M. Austin Apr 1896 822 Butte Little Chico Canyon Comment
  RSA755001  Silene antirrhina L. Ahart 2008-5-21 14773 Butte Lake Oroville, north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 0.25 mile northwest of the Ponderosa Dam. 246 Comment
  SEINET10537492  Silene antirrhina Lowell Ahart 1985-5-31 Ahart 5032 Butte Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enter- prise Bridge across Lake Oroville, north-east of Oroville. Comment
  CHSC55053  Silene bernardina Lowell Ahart 1991-9-19 6729 Butte Near where the two branches of Wildcat Creek come together, about 2 miles north-west of Four Trees, about 2 miles north-east of Coyote Gap. 1219 Comment
  CAS-BOT-BC385884  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit east of Jonesville 2133 Comment
  UC203622  Silene douglasii A. A. Heller 1914-8-7 11661 Butte Summit back Jonesville (on a n slope just below the crest of the ridge); Summit back of Jonesville 2133 Comment
  CHSC37284  Silene gallica M. S. Taylor 1982-5-2 4390 Butte N side of Hwy 70, at Pulga bridge, ca. 20 mi ne of Oroville. Pulga serpentine outcrops. 487 Comment
  CHSC2447  Silene laciniata subsp. californica R. Carter 1965-7-6 277 Butte Found 1.4 mi. N of Mountain House on Oroville-Quincy Rd., on E bank above road. 914 Comment
  CHSC37282  Silene latifolia subsp. alba M. S. Taylor 1982-6-24 4726 Butte E side of Flea Mt ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, ca. 8.9 mi n of Jarbo Gap. 1097 Comment
  CHSC39503  Silene lemmonii Lowell Ahart 1993-5-28 4018 Butte Along the trail to Feather Falls, near the over-look, about 5 1/2 miles north of the town of Feather Falls. 600 Comment
  CHSC48269  Silene lemmonii Vernon Oswald 1984-4-9 1138 Butte Feather Falls Trail, near the overlook at the falls. 609 Comment
  JEPS98990  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CHSC38871  Sisyrinchium bellum Vernon Oswald 1983-3-31 229 Butte Upper Bidwell Park, on the s side of Upper Park Rd. 300 ft w of Parking Area N (Salmon Hole). 152 Comment
  CHSC29410  Sisyrinchium elmeri R. A. Schlising; R. Banchero 1980-6-6 3653 Butte N of Oroville, on Bald Rock Road, 1.5 mi s of jct with Oroville-Quincy Highway in Brush. Marsh ca 0.5 off road. Comment
  CHSC43042  Sisyrinchium elmeri L. P. Janeway 1987-7-5 2438 Butte 1.0 mi SW of Jones Ndw along the Concow Rd, then 0.4 mi E on a spur rd. 1798 Comment
  SD8215  Smilax californica Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  CHSC42007  Solanum americanum Lowell Ahart 1986-11-7 5417 Butte In a prune orchard, east of the Feather River and the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC92478  Solanum americanum Lowell Ahart 2005-11-20 12492 Butte On the east side of the North Fork of the Feather River, about 50 yards southwest of the Poe Power House. 275 Comment
  CHSC101306  Solanum parishii Lowell Ahart 2009-4-22 15595 Butte East side of Guardians Trail, just south of the small drainage, just north of Pine Trail, Upper Bidwell Park, west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC67398  Solanum parishii James D. Jokerst; R. A. Schlising 1985-4-8 2226 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  SEINET10546684  Solanum parishii Mary Susan Taylor 1975-4-26 Taylor 507 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  RSA716319  Solidago californica L. Ahart 2005-8-19 12335 Butte Along a small drainage, about 1/8 mile west of Dunstone Drive, about 1.5 miles north and 2 7/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. 55 Comment
  CHSC39344  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  JEPS107558  Solidago velutina subsp. californica Lowell Ahart 2005-8-19 12335 Butte In a farmed field, along a small drainage, about 1/8 mile west of Dunstone Drive, about 1 1/2 miles north and 2 7/8 miles east of Honcut, about 12 miles (air) southeast of Oroville 54 Comment
  CHSC71163  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte In the tracks of a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  JEPS119761  Sonchus asper subsp. asper Lowell Ahart 2012-5-14 18051 Butte Along the edges of the paved path, east side of the Deer Pen, between Tables 9 & 10, Lower Bidwell Park, Chico. Comment
  JEPS124183  Sonchus oleraceus Lowell Ahart 2015-1-27 19923 Butte Northwest of intersection of Hazel Street and Virginia Street, Gridley. Comment
  CAS-BOT-BC158897  Sorbus scopulina A. A. Heller 1928-7-25 14706 Butte Along the forest service trail between Jonesville and Butte Creek House Comment
  UCD92663  Sorghum halepense G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13070 Butte Northern Sacramento Valley. East Gridley Road at the W edge of the Feather River bridge. 27 Comment
  UCR219097  Sorghum halepense George K. Helmkamp, E. A. Helmkamp 2009-9-5 15574 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
  CHSC51954  Sparganium emersum subsp. emersum L. P. Janeway 1987-6-19 2248 Butte Mdw on Pinkard Cr between Lewis Ridge and Mooreville Ridge, 6.5 mi from the Challenge-LaPorte Rd and Travis Saddle via the rd to Golden Trout Crossing. 1082 Comment
  RSA719718  Spartium junceum Michael A. Vincent, K. Levings 2006-7-29 12893 Butte NE of Chico along Rt. 32. Comment
  SEINET10973170  Spartium junceum Mary Susan Taylor 1980-4-27 Taylor 2565 Butte T22N R2E se sec 25. On S side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland on edge of Riparian Woodland. With J.D. Jokerst. 137 Comment
  CHSC40791  Spergula arvensis subsp. arvensis Lowell Ahart 1985-5-31 5031 Butte About 25 feet below the high water line of Lake Oroville, 1/8 mile east of the Enterprise Launch Area, about 1/2 mile west of the Enterprise Bridge across Lake Oroville, north-east of Oroville. 274 Comment
  CHSC45898  Spergularia bocconi Lowell Ahart 1974-6-9 478 Butte Near roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC390129  Spergularia bocconi Lowell Ahart 1978-4-18 s.n. Butte Sutter Buttes Region. Peter Ahart Ranch, Honcut 50 Comment
  JEPS123828  Spergularia marina Lowell Ahart 2015-4-24 20061 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS114724  Spergularia rubra Lowell Ahart 2008-5-8 14712 Butte Below the high water line of Lake Oroville, about 100 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 259 Comment
  RSA0116393  Sphaeralcea ambigua M. M. Boney 1897-1 s.n. Butte [No location information on label.] Comment
  CHSC65573  Stachys ajugoides var. rigida R. Banchero 1980-7-28 314 Butte Upper margins of Chico Meadows. Ca 1 mi N of jcn of Humboldt Rd and the Skyway, ca 6 mi NE of jcn Humboldt Rd and Hwy 32. 1322 Comment
  CHSC96310  Stachys ajugoides var. rigida L. P. Janeway 2006-8-12 8839 Butte Northern High Sierra Nevada. At Concow Road crosiing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  SEINET10498820  Stachys palustris subsp. pilosa Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4217 Butte T21N R5E nw sec 31. Ca. 2.5 mi w on Bloomer Hill Rd from Oroville-Quincy Hwy, ca. 13 mi n of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC84398  Stachys pycnantha Lowell Ahart 2003-7-23 10439 Butte Around the margins of ponds, Oroville Wildlife Area, about 1/4 mile west of Pacific Heights Road, about 5 miles (air) southwest of Oroville. 26 Comment
  CHSC94616  Stachys pycnantha Lowell Ahart 2006-9-11 13286 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
  RSA4123  Stachys rigida subsp. quercetorum E. B. Copeland 1930-7-20 s.n. Butte Jonesville 1500 Comment
  CHSC50828  Stellaria calycantha Vernon Oswald; Lowell Ahart 1990-7-19 4369 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.6 mi west of the Plumas County line. 1981 Comment
  RSA0041905  Stellaria longipes subsp. longipes Lyman Benson 1932-7-28 3963 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  CHSC35036  Stellaria longipes var. longipes R. A. Schlising 1980-6-8 3869 Butte NE of Butte Meadows and SW of Jonesville, along Humboldt Road to the W of Cherry Hill Campground. At meadow margin. 1402 Comment
  CAS-BOT-BC395110  Stellaria nitens A. A. Heller; H. E. Brown 1902-5-12 5527 Butte Grade between Clear Creek and Paradise Comment
  CHSC46826  Stellaria obtusa R. A. Schlising; L. P. Janeway 1988-7-16 4602 Butte N part of county, NE of Butte Meadows and E of Scott John Creek; near Willow Creek. 1554 Comment
  CDA42852  Stellaria pallida L. Ahart 2012-4-3 17943 Butte On large rocks, on the north side of Bloody Pin Trail, west of Guardian Trail, about 1/2 mile west of Highway 32, about 7 1/2 miles northeast of Chico, south part of Upper Bidwell Park. Comment
  JEPS122212  Stellaria pallida Lowell Ahart 2014-4-20 19386 Butte About 30 yards west of a small drainage, about 80 yards southwest of a small falls, about 3/4 mile northwest of the parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC46971  Stephanomeria exigua subsp. macrocarpa Lowell Ahart 1980-7-20 2470 Butte Along the edge of the abandoned paved road on the north side of the Suspension Bridge across Lake Oroville, north of Oroville. 304 Comment
  CHSC62436  Stephanomeria paniculata L. P. Janeway 1993-9-7 4587 Butte Plumas National Forest. About 300 ft west of the south end of Ponderosa Dam. Along the edge of the dirt road. 298 Comment
  UC1562279  Stephanomeria paniculata Lowell Ahart 1990-8-15 6592 Butte Below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  SEINET10508401  Stipa pulchra Lowell Ahart 1983-6-15 Ahart 4055 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  JEPS116637  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte 1.6 air mi north of Jarbo Gap clearing under powerlines about 1/3 of the way down steepest (0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest); Northern High Sierra Nevada 853 Comment
  CHSC44382  Streptanthus polygaloides Lowell Ahart 1988-5-30 6034 Butte Along Poe Power House Road, about 1/10 mile north of the bridge across the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 365 Comment
  JEPS34385  Streptanthus polygaloides Rimo Bacigalupi and P. C. Hutchison, J. K. Wright 1963-6-1 8861 Butte 0.75 mi. s. Pulga (cliff above side rd. off U.S. Hwy. 40 in canyon of N. Fork Feather R., n. base of grade over Jarbo Gap, just before bridge across Feather R.); canyon of N. Fork Feather R. 426 Comment
  UC1492814  Streptanthus polygaloides Freed W. Hoffman 1952-6-7 4177 Butte Ponderosa Rd 0.1 mi e West Branch Bridge (n of Magalia) Comment
  CHSC36698  Streptanthus tortuosus R. E. Preston 1982-6-18 305 Butte Ca. 1 mi n of the site of Merrimac, ca. 23 mi ne of Oroville. 1371 Comment
  CHSC30707  Streptanthus tortuosus var. suffrutescens M. S. Taylor 1980-5-27 2714 Butte Little Bald Rock, ca. 3 mi s of Brush Creek. 1016 Comment
  CHSC73827  Styrax officinalis var. redivivus B. Castro; L. Hanson 1996-8-22 719 Butte Ca 1.2 air mi NE of confluence of Middle Fork Feather River with it South Branch, on the extreme W end of Mtn Spring House Ridge. On SW-facing slope of knoll, ca 0.2 mi NW of overlook to Seven Falls. 969 Comment
  CHSC46865  Subularia aquatica var. americana Vernon Oswald 1989-8-29 3974 Butte Largest of a cluster of three snow lakes located ca. 2 mi (air) e of the peak of Snow Mtn, ca. 3 mi (air) s of Humbug Summit. 1950 Comment
  CHSC47408  Swertia albicaulis var. nitida Lowell Ahart 1979-5-29 1902 Butte Along the edges of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC51881  Swertia albicaulis var. nitida L. P. Janeway 1987-6-20 2269 Butte Top of Lumpkin Ridge 1.4 mi S of the Feather Falls-Lumpkin Ridge Rd. 1226 Comment
  SBBG119858  Swertia albicaulis var. nitida L. Ahart 2003-7-20 10435 Butte S side of Bean Crk Rd, ca. 1/8 mi N of Little Bald Rock, ca. 2 air mi SE of Brush Crk 987 Comment
  SEINET10938829  Symphoricarpos rivularis Mary Susan Taylor 1976-3-9 Taylor 1020 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC69666  Symphyotrichum chilense Vernon H. Oswald 1982-8-20 Butte Upper Bidwell Park, Chico, near the east end of Centennial Ave. 85 Comment
  CAS-BOT-BC99045  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  CHSC69671  Symphyotrichum spathulatum var. spathulatum Vernon H. Oswald 1987-7-16 3123 Butte West Branch of the Feather River upstream of where it crosses the road to Jones Meadow, ca. 1 mi (air) NE of Inskip. 1341 Comment
  JEPS124195  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2015-10-9 20550 Butte About 100 yards east of the bridge across the Wes Branch of the Feather River, about 2 miles (air) northwest of Philbrook Reservoir. Comment
  CHSC3380  Syringa vulgaris Robert L. Smith 1966-4-4 55 Butte 5 miles south of post office. Paradise. Comment
  CHSC109354  Tanacetum vulgare T. M. Hanson 2012-10-17 Butte Northern High Sierra Nevada. Plumas National Forest; at the base of a small cliff band on the southwest side of the North Fork Feather River 220 m southwest of Bardees Bar. 321 Comment
  CHSC34795  Tauschia kelloggii M. S. Taylor 1980-5-8 2604 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC20521  Tellima grandiflora M. S. Taylor 1975-4-29 545 Butte Scattered along Hwy 70, ca. 25 mi n of Oroville. Comment