Search Results — 2000 specimen records retrieved (1622 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/consortium/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC20540  Abelia schumannii Pamela Caldwell 1971-9-26 Butte SW corner of Auditorium CSUC. Comment
  CHSC20727  Abies concolor M. S. Taylor 1975-8-31 901 Butte Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  UC436313  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  UC600584  Abies concolor E. B. Copeland 1930-7-1 Butte Jonesville 1550 Comment
  CHSC105804  Abies magnifica var. magnifica Lowell Ahart 2010-9-21 17196 Butte On the west side of the County Road, about 1/4 mile north of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1911 Comment
  CHSC33686  Acacia dealbata L. Ahart 1981-3-29 2708 Butte Along edge of Upper Palermo Rd, along edge of irrigation ditch; population spreading up and down ditch. 50 Comment
  CHSC93  Acer macrophyllum V. Holt 1948-4-14 Butte Cohasset road 10 mi. past Richardson Springs turnoff. 487 Comment
  UC203657  Acer macrophyllum A. A. Heller 1914-3-19 11213 Butte Canyon of Chico Creek along the stream canyon of Chico Creek Comment
  CHSC115410  Acer negundo M. Rogers 2013-5-4 Butte Pine Creek Unit of SRNWR near Hwy 32. 39 Comment
  JEPS119750  Acer saccharinum Lowell Ahart 2012-5-17 18087 Butte On the south edge of Big Chico Creek, east of the Deer Pen, between Table 12 & 13, Lower Bidwell Park, Chico. Comment
  CHSC109562  Achillea millefolium L. P. Janeway 2012-6-23 10891 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CAS-BOT-BC210635  Achnatherum lemmonii Lowell Ahart 1985-5-15 5004 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 800 Comment
  CHSC49583  Achnatherum lemmonii Vernon Oswald 1984-5-21 1195 Butte Doon Campground on the Skyway, 1.0 mi e of Coutolenc Rd. at Lovelock. On the abandoned railroad 0.5 mi s of the Little West Fork of the West Branch of the Feather River. 853 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
  CAS-BOT-BC217019  Achnatherum occidentale M. S. Taylor 1978-7-18 1707 Butte On top of Humboldt Peak at Humboldt Summmit 2158 Comment
  CHSC34039  Achnatherum stillmanii L. Ahart 1981-7-7 2934 Butte Along the edge of the dirt road to the Forbestown Reservoir, ca. 3 mi ne of Forbestown. 800 Comment
  UC1499971  Achnatherum stillmanii Lowell Ahart 1983-6-30 4190 Butte 1 1/2 mi se Stirling City 1100 Comment
  CAS-BOT-BC29949  Achyrachaena mollis Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch near Honcut 15 Comment
  CHSC56837  Achyrachaena mollis R. L. Ondricek-Fallscheer 1983-5-7 167 Butte At southwestern-most end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 152 Comment
  CHSC90573  Achyrachaena mollis Jose Romero 1983-4-20 9 Butte Site located on the Oroville Wildlife Area. Junction of Larkin and Timothy Rds., 4 mi. s.w. of Oroville. 45 Comment
  CHSC97929  Acmispon americanus var. americanus D. G. Kelch 2006-8-2 06 .345 Butte Along Butte Creek, north of Durham-Dayton Hwy. 40 Comment
  CHSC113917  Acmispon brachycarpus Lowell Ahart 2014-5-13 19457 Butte North of a small drainage, below the high water line of Lake Oroville, about 250 yards southeast of the trail, trail starts at the parking area at the Enterprise Boat Launch Area, about 11 miles (air) east of Oroville. 241 Comment
  CHSC90380  Acmispon brachycarpus Lisa J. Newsum 1984-4-19 19 Butte Bidwell Heights Rd., 1 1/4 from jct. with Hwy 32, 7 mi e of Chico. 304 Comment
  CHSC95207  Acmispon brachycarpus R. D. Fischer 2004-4-14 809 Butte Chico. Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition off Hwy. 32. Collected along the Humboldt trail adjacent Hwy 32. 426 Comment
  CHSC45285  Acmispon glaber var. glaber Vernon Oswald 1988-4-28 3289 Butte Hwy 99 along the Thermalito Afterbay, 0.5 mi s of Hwy 162 (east). 33 Comment
  CHSC38500  Acmispon parviflorus Vernon Oswald 1983-4-9 300 Butte Upper Bidwell Park, Chico, beside the North Rim Trail ca. 1.4 mi e of the power lines. 353 Comment
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  SD1731  Aconitum columbianum E. B. Copeland 1929-7-22 363 Butte Jonesville, moist glades and thickets 1500 Comment
  CAS-BOT-BC391373  Aconitum columbianum subsp. columbianum A. A. Heller 1928-7-10 14653 Butte At Butte Meadows Comment
  CHSC113468  Aconitum columbianum subsp. columbianum Lowell Ahart 2014-7-13 19652 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
  HSC73014  Aconogonon phytolaccifolium M. S. Taylor, L. Ahart 1981-8-16 4208 Butte N side of 25N04 near Upper Big Kimshew Creek, 2 mi. SE of Philbrook Reservoir, 6 mi. NE of Stirling City 1951 Comment
  CHSC30064  Actinidia chinensis K. R. Stern 1979-5-1 Butte Chico. Comment
  CHSC23705  Adenocaulon bicolor M. S. Taylor 1976-5-5 1120 Butte Scattered ca. 4 ft N of Bear Creek and the waterfall, ca. 1/4 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  CHSC26741  Adenocaulon bicolor M. S. Taylor 1977-8-17 1466 Butte On edge of Montane Meadow, ca. 25 ft S of Old Humboldt Rd, ca. 3.4 mi E of Butte Meadows. 1341 Comment
  CHSC20256  Adiantum aleuticum G. S. Ellmore 1972-4-20 136 Butte On Humbug Road ca. 13 km. Ne of Covered Bridge ca. 30 m. e of roadside. Comment
  CHSC3425  Adiantum aleuticum Judy Potter 1966-3-7 113 Butte Honey Run Road, 2.5 miles south The Skyway. Comment
  SEINET11708078  Adiantum capillus-veneris J. D. Mott 1978-1 10 Butte West Branch Feather River 280 Comment
  CAS-BOT-BC65556  Adiantum capillus-veneris M. S. Taylor 1979-5-4 1983 Butte Millsap Bar campground, ca. 9 mi ne of jct of Millsap Bar Rd with Brush Creek Rd, ca. 26 mi ne of Oroville 1005 Comment
  SEINET10932926  Adiantum jordanii Mary Susan Taylor 1980-3-1 Taylor 2340 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  CDA19905  Aegilops triuncialis D. Nay, R. Hill 2002-5-25 PDR 009406 Butte Northern California; Vicinity of Oroville. 0 Comment
  JEPS98560  Aegilops triuncialis Lowell Ahart 2000-5-16 8357 Butte 5 air miles SW of Oroville (Thermalito Afterbay, N side of access road to boat ramp, W of Larkin Road, 1 1/4 mi S of Oroville Airport) 42 Comment
  SEINET10494495  Aesculus californica Mary Susan Taylor 1975-2-16 Taylor 381 Butte Ca. 1/4 mi W of Pentz-Magalia Hwy, ca. 5 mi S of Paradise, in vicinity of Lime Saddle Reservoir. Foothill Woodland. Comment
  CHSC3136  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  CHSC45668  Ageratina occidentalis V. Oswald; L. Ahart 1988-8-16 3693 Butte Ca. 5 mi (air) SE of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2103 Comment
  CHSC41255  Agoseris glauca var. monticola S. C. Morey 1983-7-1 474 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  UC891241  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows Butte Meadows 1402 Comment
  CHSC93354  Agoseris heterophylla var. heterophylla Lowell Ahart 2006-4-28 12543 Butte On the east side of the dirt road, about 1/4 mile northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 313 Comment
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Jan 19 2011
  UCD128616  Agoseris monticola Lowell Ahart 1995-10-3 7669 Butte along the north side of Butte Creeke House Meadow, about 2.5 miles (air) north-east of Snag Lake. 1767 Comment
  CHSC42472  Agoseris retrorsa Lowell Ahart 1987-5-12 5653 Butte South of Lumpkin Ridge Road, 1 1/2 miles north-east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  UC600721  Agoseris retrorsa E. B. Copeland 1931-7-12 Butte (Ridge between Jones and Willow Creeks) Jonesville 1700 Comment
  SEINET10475111  Agoseris retrorsa Mary Susan Taylor 1981-5-21 Taylor 3771 Butte T22N R4E nw/nw sec l and ne/ne sec 2, Pulga SW quad. S side of Concow Rd, ca. 0.5 mi S of its jct with Ponderosa Way (Rim Rd), ca. 20 air mi N of Oroville. In reddish weathered serpentine; 2800 ft. 853 Comment
  UCD51814  Agrostis avenacea Bill B. Fischer 1977-6-1 s.n. Butte Biggs Rice Exper. Sta. Comment
  CAS-BOT-BC127370  Agrostis exarata John Thomas Howell 1973-7-9 49692 Butte Sierra Nevada. Northeast of Pulga Bridge, Feather River highway. 417 Comment
  CDA28130  Agrostis exarata L. Ahart 1998-6-3 8016 Butte West side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Southeast margins of a large seep, southwest of the lone oak tree, west of the cow chute. Comment
  CHSC37096  Agrostis exarata L. Ahart 1982-9-13 3823 Butte By Pinkard Creek, ca. 1/8 mi n of Lost Creek Reservoir Dam, ca. 2.2 mi nw of Strawberry Valley. 1100 Comment
  CHSC47697  Agrostis exarata Lowell Ahart 1989-9-21 6397 Butte Along the west edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  SEINET10789949  Agrostis exarata A. Arthur Heller 1917-7-26 Heller 12825 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  CHSC50810  Agrostis exarata var. monolepis Vernon Oswald; Lowell Ahart 1990-7-31 4417 Butte Jeep Trail between Concow Rd and Rim Rd, ca. 2 mi northeast of Concow. 899 Comment
  CAS-BOT-BC139716  Agrostis gigantea M. S. Taylor 1978-7-21 1796 Butte Lake Madrone at its south junction with Oroville-Quincey Highway ca. 10 miles northeast of Oroville. 609 Comment
  CHSC30292  Agrostis hendersonii M. S. Taylor 1980-5-27 2692 Butte Big Bald Rock, ca. 3 mi e of Lake Madrone. 996 Comment
  CHSC64251  Agrostis idahoensis S. C. Morey 1983-8-1 648 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CAS-BOT-BC138851  Agrostis microphylla L. Ahart; P. Ahart 1983-6-26 4167 Butte Near Bean Creek Road, ca. 20 miles northeast of Oroville. 1000 Comment
  CAS-BOT-BC138853  Agrostis microphylla Lowell Ahart 1980-7-20 2473 Butte At Big Bald Rock. 1100 Comment
  CHSC103938  Agrostis microphylla Lowell Ahart 2010-5-16 16700 A Butte East of basalt cliffs, about 1/2 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 364 Comment
  CHSC113240  Agrostis microphylla Lowell Ahart 2014-4-20 19383 Butte About 50 yards southeast of a small falls, about 3/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 378 Comment
  CHSC90995  Agrostis microphylla Lowell Ahart 2005-5-11 11793 Butte In swales between vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
  JEPS94190  Agrostis microphylla Lowell Ahart 1998-4-29 7952 Butte ca. 7 mi. n. Oroville (n.e. of large parking area on North Table Mt., on e. side of Cherokee Rd.); North Table Mt. 426 Comment
  CAS-BOT-BC139078  Agrostis pallens Lowell Ahart 1983-6-21 4091 Butte Along Bloomer Hill Road, about 1.25 mile west of the Oroville Quincy Highway, about 15 miles northeast of Oroville. 450 Comment
  CAS-BOT-BC139080  Agrostis pallens Lowell Ahart 1980-7-29 2494 Butte Along Swedes Flat Road. 320 Comment
  UC1594697  Agrostis perennans Lowell Ahart 1992-7-21 6809 Butte about 2 (air ) mi ne Philbrook Reservoir (s side of Coon Hollow); Coon Hollow 1737 Comment
  CAS-BOT-BC138770  Agrostis scabra Lowell Ahart 1984-7-19 4738 Butte About 1.5 mile southeast of Bald Mountain, 0.75 mile west of Oak Point, about 4 miles northeast of Stirling City. 1500 Comment
  CHSC49498  Agrostis scabra Vernon Oswald 1987-7-8 3100 Butte Butte Creek Reservoir, on the north side of Butte Creek east of the Skyway, east of Chico. 74 Comment
  CHSC49502  Agrostis stolonifera Vernon Oswald 1987-7-20 3140 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, between the dam for Crouch Ditch and the double set of transmission lines. 82 Comment
  CHSC49702  Agrostis thurberiana Vernon Oswald 1987-7-16 3119 Butte Slightly w of the Skyway, 1.4 mi s of Inskip. 1426 Comment
  CHSC107926  Albizia julibrissin L. P. Janeway 2011-7-7 10503 Butte Sacramento Valley. Near edge of water, south side of Feather River just east of Bedrock Park, Oroville. On old gravel bar several feet from the water. 41 Comment
  JEPS113499  Alisma plantago-aquatica Lowell Ahart 2007-7-8 14277 Butte On the south side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville 45 Comment
  CHSC96944  Alisma triviale Lowell Ahart 2007-7-8 14277 Butte On the south side of North Honcut Creek, Peter Ahart Ranch, about 3/4 miles north and 2 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CAS-BOT-BC445435  Alisma triviale A. A. Heller 1914-7-31 11630 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road, 6 miles from Chico. Comment
  JEPS117255  Allium amplectens Lowell Ahart 2010-5-23 16728 Butte On the west side of Guardians trail, north of the small drainage, about 50 yards north of Pine Trail, about 1/4 mile (air) west of Highway 32, about 9 miles (air) northeast of Chico 429 Comment
  POM169472  Allium amplectens E. B. Copeland 1903-5-2 2871 Butte Chico Comment
  CAS-BOT-BC460738  Allium amplectens A. A. Heller 1914-4-16 11299 Butte Chico-Centerville road, 2 miles from Chico. Comment
  SEINET12046811  Allium amplectens D. D. Schultz 1975-1 10 Butte .9 mi N of intersection of Bruce Rd. and E. Park Ave 70 Comment
  UCD18737  Allium cratericola Vernal Pool Team 2001; Carol Witham and Jennifer Buck 2001-4-10 30 Butte one mi. east of Rock River Mine and parking area, off Cherokee Rd., North Table Mountain, Oroville site. Comment
  CAS-BOT-BC466720  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte Table Mountain, 6.2 miles north of Oroville-Chico Highway Comment
  CHSC101176  Allium membranaceum Matt Brown; Jamie Tuitele-Lewis 2005-6-3 Butte Northern High Sierra Nevada. East side of Cedar Creek and about 200 m uphill from it; 2.0 km northwest of Arch Rock Tunnel. UTM Zone 10: 4414000N, 636100E. 1280 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
  CAS-BOT-BC132074  Allium peninsulare var. peninsulare A. A. Heller 1915-4-20 11849 Butte 2 miles below Centerville Comment
  CHSC54115  Allium peninsulare var. peninsulare Vernon H. Oswald; Lowell Ahart 1991-5-13 4577 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  JEPS100231  Allium sanbornii var. sanbornii Dean Wm. Taylor, Tom Engstrom 2002-7-3 18214 B Butte Fields Ridge, northerly rim South Fork Feather River canyon (ca. 3 air miles SE of Feather Falls mill site, ca. 19 miles E of Oroville) 975 Comment
  SBBG29977  Allium validum E. B. Copeland 1930-7-21 Butte Jonesville 1500 Comment
  JEPS117691  Allium vineale Lowell Ahart 2010-6-6 16770 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 mile east of Honcut, about 12 miles south of Oroville 39 Comment
  RSA470050  Allophyllum gilioides subsp. gilioides H. F. Copeland 1928-8-18 1010 Butte Neighborhood of Jonesville 1524 Comment
  CAS-BOT-BC171270  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Meadows, on the banks of Butte Creek. Sierra Nevada 1219 Comment
  CDA9273  Alnus rhombifolia D. G. Kelch 2006-8-2 6 .353 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC26460  Alnus rhombifolia P. Moyer 1971-10-1 24 Butte CSUC campus. 70 ft. w of Esplanade, n side of Big Chico Ck. 60 Comment
  UC436297  Alopecurus aequalis E. B. Copeland August, 1930 Butte above Jonesville Jonesville 1650 Comment
  CHSC83959  Alopecurus carolinianus Lowell Ahart 2003-3-31 10030 Butte Rice field, about 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 mile east of Riceton Highway, about 10 miles southwest of Oroville. 29 Comment
  CHSC90834  Alopecurus carolinianus Lowell Ahart 2005-4-14 11716 Butte Bottom of a deep drain ditch, about 200 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  RSA695396  Alopecurus carolinianus L. Ahart 2003-3-31 10030 Butte 50 yards east of the drain ditch, about 20 yards north of Hamilton Road, about 3/8 miles east of Riceton Highway, about 10 miles southwest of Oroville. 30 Comment
  CAS-BOT-BC137940  Alopecurus saccatus Lowell Ahart 1980-5-10 2236 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC30543  Alopecurus saccatus J. D. Jokerst 1980-3-20 484 Butte E of Chico, 0.3 mi E of El Monte Ave, between Hwy 32 and Humboldt Rd. Comment
  CHSC108131  Amaranthus albus Lowell Ahart 2011-10-29 17720 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
  SEINET8204407  Amaranthus albus Richard R. Halse 2006-8-2 6981 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  JEPS96093  Amaranthus blitoides Vernon H. Oswald and Lowell Ahart 1996-6-10 7751 Butte US Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the E side of Fish Camp, Riparian Sanctuary. 28 Comment
  CHSC50984  Amaranthus californicus Lowell Ahart 1990-8-15 6593 Butte About 1/4 mile north-west of the Enterprise Bridge across Lake Oroville, east of the Enterprise Boat Launch Area, along a small wash, below the high water line of Lake Oroville. 228 Comment
  CHSC51344  Amaranthus californicus Vernon Oswald 1990-8-14 4431 Butte West Branch of Lake Oroville, Vinon Gulch access, 0.5 mi north of Cherokee. Occasional on and along the track below the lower end of the paved launching ramp. 259 Comment
  UC1563277  Amaranthus californicus Lowell Ahart 1990-9-30 6602 Butte below Canyon Creek Bridge across Lake Oroville (along the edges of Canyon Creek); Lake Oroville, Canyon Creek 228 Comment
  JEPS118040  Amaranthus deflexus Lowell Ahart 2011-6-3 17362 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  UCD169384  Amaranthus deflexus Lowell Ahart 2004-9-28 11404 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 (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico. 57 Comment
  RSA32886  Amelanchier pallida A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the river at the foot of the Grade leading down from stirling City Comment
  CHSC28935  Ammannia coccinea M. S. Taylor 1978-7-22 1851 Butte On se corner of Richvale East Rd and Erickson Rd, Richvale, in rice field. Comment
  CHSC75967  Ammannia coccinea Lowell Ahart; Vernon H. Oswald 1999-8-13 8167 Butte Along east side of the Sacramento River, northwest of Parrott Landing, about1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA688938  Ammannia coccinea L. Ahart 1986-11-9 5442 Butte About 0.1 mile S of the clay burrow for Oroville Dam, 0.25 mile E of Larkin Road, about 6 miles SW of Oroville. 37 Comment
  SEINET10452870  Ammannia coccinea Mary Susan Taylor 1977-10-10 Taylor 1527 Butte Ca. 1 mi E of junction of Nelson West Road and Chico-Butte Hwy, on N side of Nelson West Road in large creek (drying area), ca. 23 mi S of Chico. 30 Comment
  CDA36696  Ammannia robusta L. Ahart 2003-6-19 10294 Butte Peter Ahart Ranch, about 300 yards east of the Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. Comment
  JEPS95918  Ammannia robusta Lowell Ahart 1999-8-13 8168 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
  CHSC66657  Ammi visnaga Vernon H. Oswald 1996-7-17 8068 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Weed along the farm road between Fish Camp and the Riparian Sanctuary. 28 Comment
  RSA0090972  Amsinckia A. A. Heller 1941-4-19 16069 Butte Crest of the hills west of Willows. Comment
  UC725515  Amsinckia A. A. Heller 1939-4-1 15364 Butte field near Radio Station, e of Chico Comment
  UC479936  Amsinckia eastwoodiae H. E. Brown Mar 3 1897-Mar 22 1897 168 Butte near Clear Creek 53 Comment
  UCD118945  Amsinckia eastwoodiae M. S. Taylor; J. D. Jokerst 1980-3-15 2385 Butte Cleark Creek Cemetary, ca. 1 mile E of Clark Road, ca. 7 miles SW of Paradise. 152 Comment
  CHSC31125  Amsinckia intermedia Howard Paul 1980-4-6 3 Butte Along the s rim of Butte Creek canyon, ca. 2.5 mi e of Chico, on the Skyway. 152 Comment
  CHSC90931  Amsinckia intermedia Lowell Ahart 2005-4-14 11700 Butte On the west bank of a deep ditch, east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  JEPS24908  Amsinckia intermedia A. A. Heller 1914-4-21 11310 Butte Chico Comment
  UC614660  Amsinckia intermedia L. Constance, J. L. Morrison 1938-4-30 2178 Butte 8 mi n Chico (between Big and Little Chico Creeks); Sierra Nevada foothills 609 Comment
  CHSC60659  Amsinckia lycopsoides Vernon H. Oswald 1993-4-11 5254 Butte Cana-Pine Creek Rd. bordering the W side of the Wurlitzer Unit of Vina Plains Preserve, near the NW corner of Butte County. 57 Comment
  HSC32633  Amsinckia lycopsoides Steven Lagos 1974-4-20 27 Butte Table Bluff Mtn. Comment
  CHSC10561  Anagallis arvensis Lowell Ahart 1970-4-22 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC35672  Ancistrocarphus filagineus R. E. Preston; R. A. Schlising 1982-4-25 265 Butte Lake Oroville, ca. 1/2 mi NE of Lime Saddle Powerhouse, ca. 4.5 mi SE of Paradise. 280 Comment
  CHSC82469  Anisocarpus madioides Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9746 Butte On the north side of a poor dirt road, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC24808  Anthemis cotula E. L. Rilla 1976-9-18 30 Butte .5 mi S of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72, 1 mi directly W of collection area. 21 Comment
  CAS-BOT-BC249065  Anthriscus caucalis George K. Helmkamp; E. A. Helmkamp 2012-4-14 18765 Butte Northwestern Sacramento Valley: entrance to Oroville Wildlife Area, 0.2 mile west of CA-70, near the Feather River 46 Comment
  CHSC14026  Anthriscus caucalis J. A Brattan 1974-4-15 5 Butte Abundant at the base of a cliff 300 yds s of the 9th hole on the Bidwell Municipal Golf Course. 91 Comment
  CHSC38729  Anthriscus caucalis Vernon Oswald 1983-4-9 304 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.6 mi e of the power lines. 274 Comment
  SEINET10454731  Anthriscus caucalis Lowell Ahart 1983-4-10 Ahart 3928 Butte S of a large wash, 1/10 mi e of the large barn, ca. 1.4 mi ne of Hwy 99 and Pentz Rd jct, ca. 16 mi s of Chico. Valley Grassland; 65 m. 65 Comment
  CHSC51276  Antirrhinum leptaleum Lowell Ahart 1990-10-5 6630 Butte Below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. 266 Comment
  JEPS87614  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 1994-10-16 7564 Butte about 2 air mi n and 3.5 mi e Forbestown (about 0.75 mi sw of the Forbestown Reservoir Dam, along s side of dirt rd to the Forbestown Reservoir, near Woodleaf Creek) 762 Comment
  SEINET10547631  Antirrhinum vexillocalyculatum subsp. intermedium Mary Susan Taylor 1979-6-22 Taylor 2169 Butte T22N R5E sw 1/4 sec 32. Pulga bridge on Hwy 70, on N side of trail leading from NE side of the bridge, ca. 27 mi N of Oroville; serpentine soils. 488 Comment
  CHSC65578  Aphyllon epigalium subsp. epigalium L. P. Janeway 1995-6-1 4765 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  CHSC40280  Apocynum androsaemifolium Lowell Ahart 1985-6-17 5047 Butte Along the edge of the dirt road, Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC40379  Apocynum androsaemifolium Lowell Ahart 1985-6-17 5049 Butte Along the road on Fields Ridge, about 4 miles south-east of Feather Falls. 792 Comment
  CHSC88091  Apocynum cannabinum R. D. Fischer 2004-4-17 176 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located in riparian zone of Big Chico Creek w. of 10 Mile House Road where rd. and creek are closest. At creek edge. 213 Comment
  CAS-BOT-BC392112  Aquilegia formosa E. B. Copeland 1929-7-15 362 Butte Jonesville 1550 Comment
  UC600706  Arabis glabra E. B. Copeland 1931-6-22 Butte Jonesville 1500 Comment
  RSA4434  Arabis platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  CHSC3560  Arbutus menziesii R. D. Briggs 1966-2-20 17 Butte Thirteen miles northeast of Oroville, on the Feather Falls Highway. Comment
  SEINET7258049  Arbutus menziesii M. J. Williams 1967-4-15 s.n. Butte Feather River Highway 671 Comment
  CHSC38541  Arceuthobium occidentale Vernon Oswald 1983-6-9 664 Butte Upper Bidwell Park, Chico, near Alligator Hole. 91 Comment
  CHSC48607  Arceuthobium occidentale Vernon Oswald 1982-11-8 12 Butte Near State Highway 32 7.9 mi n-e of Chico. 463 Comment
  CHSC24702  Arctostaphylos J. R. Nelson 1976-3-1 5 Butte 9 mi E of Chico on Hwy 32. 548 Comment
  RSA633007  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27456 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  UCD52114  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51111 Butte Skyway and Wagstaff Road; Paradise; transition zone. 609 Comment
  UCD52160  Arctostaphylos manzanita John Thomas Howell 1975-6-15 51097 Butte In Upper Sonoran Zone on volcanic rock; about 2 miles from Paradise on 'Skyway' to Chico. 396 Comment
  SEINET11987374  Arctostaphylos manzanita R. A. Schlising 1974-1 3157 Butte along Hwy 32, 9.4 mi NE of junction with Hwy 99 in Chico Comment
  CHSC41221  Arctostaphylos manzanita subsp. manzanita J. D. Jokerst 1985-7-18 2516 Butte Canyon of Rock Cr. NW of Cohasset and Cohasset Ridge. Lower canyon slope between Cohasset Hwy and creek. Comment
  CHSC90075  Arctostaphylos manzanita subsp. roofii Elizabeth A. Ballou 1991-4-23 5 Butte About 0.25 mi up Cohasset Ridge off of Cohasset Highway. 335 Comment
  UC725750  Arctostaphylos mewukka A. A. Heller 1941-12-26 16342 Butte Neal Rd 3 mi below Paradise Comment
  UC726644  Arctostaphylos mewukka A. A. Heller 1942-1-29 16358 Butte on Hwy 32 near Lone Pine Forestry Station (14 mi e of Chico) Comment
  RSA795329  Arctostaphylos mewukka subsp. mewukka L. Ahart 2010-7-27 16913 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 742 Comment
  CAS-BOT-BC38526  Arctostaphylos mewukka subsp. truei John Thomas Howell 1975-6-15 51107 Butte Paradise. Castle Drive near Cliff Drive. 609 Comment
  JEPS83458  Arctostaphylos mewukka subsp. truei Wayne Roderick June 1984 Butte Conteleve Road e Paradise 762 Comment
  RSA4477  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 672 Butte Jonesville. On ridge east of the Summit' 2100 Comment
  SD3596  Arctostaphylos nevadensis E. B. Copeland 1931-6-22 Butte Jonesville, on ridge E of the Summit. 2100 Comment
  CAS-BOT-BC46714  Arctostaphylos patula H. F. Copeland 1928-5-6 223 Butte Jonesville. 1524 Comment
  CAS-BOT-BC46715  Arctostaphylos patula A. A. Heller 1915-6-26 12035 Butte Summit of the Sierra Nevada above Jonesville. 2133 Comment
  CAS-BOT-BC46720  Arctostaphylos patula M. S. Taylor 1974-3-3 71 Butte Ca. 5 mi. e. of Chico on the n. side of the Skyway to Paradise. 76 Comment
  UCD51944  Arctostaphylos truei John Thomas Howell 1975-6-15 51094 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CAS-BOT-BC48281  Arctostaphylos viscida subsp. viscida Lowell Ahart 1975-4-3 s.n. Butte Near Honcut 60 Comment
  CAS-BOT-BC48288  Arctostaphylos viscida subsp. viscida John Thomas Howell 1976-4-2 51560 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC106052  Arctostaphylos viscida subsp. viscida Lowell Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 741 Comment
  CHSC106887  Arctostaphylos viscida subsp. viscida Lowell Ahart 2011-2-28 17326 Butte West side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 47 Comment
  CHSC109106  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17760 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC109108  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17762 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  CHSC13863  Arctostaphylos viscida subsp. viscida L. E. Delight 1973-4-28 11 Butte Locally abundant ca. 30 yds on E side of road and ca. 1.3 mi. N on De Sabla-Stirling city turn-off, Magalia. 853 Comment
  CHSC95990  Arctostaphylos viscida subsp. viscida Lowell Ahart 2007-2-13 13550 Butte High on the west side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville. 46 Comment
  JEPS38758  Arctostaphylos viscida subsp. viscida unknown 1914-2-22 Butte Oroville Comment
  JEPS98535  Aristida dichotoma Lowell Ahart 2000-8-5 8624 Butte Above seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC137557  Aristida oligantha John Thomas Howell 1961-9-22 36762 Butte Sierra Nevada. North Fork of Feather River, 10 miles from Oroville. Comment
  UC203846  Aristida oligantha A. A. Heller 1914-7-15 11576 Butte uplands between Pentz and Dry Creek Comment
  SEINET10512686  Aristida oligantha Edwin B. Copel 1903-7-27 Copeland 3488 Butte Chico. on bank of sloughs. Comment
  SEINET11686323  Aristida ternipes var. gentilis Unknown 1983-1 4277 Butte along Hwy 32, ca 1 mi E of Chico 100 Comment
  CAS-BOT-BC400431  Aristolochia californica John Thomas Howell 1959-9-20 34616 Butte Flats along Feather River about 1 mile west of Oroville 45 Comment
  CAS-BOT-BC400433  Aristolochia californica John Thomas Howell 1961-9-22 36759 Butte North Fork of Feather River, 10 miles from Oroville. (On the old highway!) Comment
  CHSC3545  Aristolochia californica Gary Dutton 1966-2-28 94 Butte Cliff area in upper Bidwell Park 'Salmon Hole' 7.9 miles N.E. Chico State College. Comment
  UCD129196  Arnica dealbata E. B. Copeland 1929-7-18 399 Butte Jonesville. 1550 Comment
  CAS-BOT-BC82413  Arnica discoidea H. F. Copeland 1920-8-26 184 Butte Jonesville Woods 1219 Comment
  RSA739647  Arnica longifolia L. P. Janeway, Linus Gog 2008-7-18 9436 Butte Northern High Sierra Nevada. Along Philbrook Creek betw the E end of Philbrook Reservoir and Concow Road 1689 Comment
  JEPS114682  Artemisia douglasiana Lowell Ahart 2008-6-23 15150 Butte N side of Ponderosa Way, N of the water fall, about 1 mi (air) SW of the Ponderosa Dam, about 2 1/4 mi (air) NW of Forbestown 482 Comment
  JEPS120016  Artemisia douglasiana Lowell Ahart 2012-10-28 18519 Butte On the south side of Big Chico Creek, on the east side of the bridge, north of the restrooms, about 200 yards west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  SEINET252473 Image available Artemisia douglasiana Leila M. Shultz, Heather Garrison 2006-1 20317 Butte East of Oroville along hwy 70, turnoff for Big Bend road. Comment
  UC726606  Artemisia douglasiana A. A. Heller 1916-9-23 12661 Butte near Forest Ranch; Sierra foothills Comment
  CAS-BOT-BC90291  Artemisia douglasiana Lowell Ahart 1981-9-15 3162 Butte One mile N of the Lost Creek Reservoir 1200 Comment
  CHSC44084  Asclepias cordifolia L. P. Janeway 1987-7-5 2464 Butte Along the road to High Lakes, 5.3 mi from the Skyway (Philbrook Rd). 1844 Comment
  CHSC102716  Asclepias fascicularis Lowell Ahart 2009-8-8 16268 Butte Rice field, Peter Ahart Ranch, about 2 1/2 miles north and 3/4 mile east of Honcut, about 12 miles (air) south of Oroville. 31 Comment
  CHSC6561  Asclepias fascicularis R. Carter 1966-7-6 464 Butte Found ca. 7 mi. E of Oroville on NE corner of intersection of Miners Ranch Rd. and Mt. Ida Rd. 243 Comment
  CHSC28669  Asclepias speciosa S. Posner 1972-10-12 Butte Upper Bidwell Park, North bank Chico Creek. Vicinity of Archery Range. Chico. Comment
  JEPS98982  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
  POM120432  Aspidotis californica C. C. Bruce 1897-06 1869 Butte Iron Canyon. Comment
  CHSC24899  Aspidotis densa P. Laherty 1976-4-4 19 Butte Scattered on the n side of Ponderosa Way, ca. 4 mi w of junc of Ponderosa Way and Hwy 32, ca. 22 mi ne of Chico. 426 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
  UC399497  Aspidotis densa Mrs. R. M. Austin June 1896 196 Butte Lomo Comment
  CAS-BOT-BC178467  Astragalus gambelianus A. A. Heller; H. E. Brown 1902-5-8 5490 Butte Berry Canyon, near Clear Creek Comment
  CHSC58265  Astragalus tener var. ferrisiae Lowell Ahart 1992-5-23 6770 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 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
  JEPS104162  Athyrium filix-femina var. cyclosorum Lowell Ahart 2003-7-12 10377 Butte Along a small stream, on the w side of Milsap Bar Rd, ca 2 1/2 mi (air) e of the Brush Creek Work Center, ca 17 mi (air) ne of Oroville. 1036 Comment
  UCR95841  Athyrium filix-femina var. cyclosorum E. B. Copeland 1929-7-29 733 Butte Jonesville, along creeks. 1600 Comment
  CAS-BOT-BC17449  Athysanus pusillus Lowell Ahart 1973-3-7 s.n. Butte Honcut. Peter Ahart Ranch. 150 Comment
  CHSC11383  Athysanus pusillus Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC58258  Athysanus pusillus Lowell Ahart 1992-3-9 6736 Butte At the high water line of Lake Oroville, about 1/6 mile east of the Enterprise Boat Launch Area, about 1/2 mile north-west of the Enterprise Bridge across Lake Oroville. 274 Comment
  CHSC55054  Atriplex canescens Lowell Ahart 1991-9-6 6713 Butte On the south side of Rutherford Road, about 1/8 mile west of Pennington Road, south of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south-west of Gridley. 30 Comment
  CHSC34772  Atriplex rosea Lowell Ahart 1981-11-6 3220 Butte Near the entrance to the Gray Lodge Waterfowl Mangement Headquarters, just west of Pennington Road, about 12 miles south-west of Gridley. 35 Comment
  SEINET4136173  Atriplex serenana Lowell Ahart 1989-9-28 6400 Butte Valley Grasland: On the east side of Highway 70, near Garden Drive off ramp, Thermalito.; 0 73 Comment
  CAS-BOT-BC146179  Avena barbata Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  CHSC42851  Avena barbata Lowell Ahart 1987-5-6 5548 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 283 Comment
  CHSC46434  Avena fatua Lowell Ahart 1989-5-10 6218 Butte Below the high water line of Lake Oroville, near the end of the dirt road that leads to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 271 Comment
  CHSC27184  Azalea indica P. Moyer; R. Pessner 1971-9-26 6 Butte CSUC campus. E side of Bldg. A. 60 Comment
  CHSC113304  Azolla filiculoides Lowell Ahart 2014-4-9 19338 Butte Bottom of a drying deep pond, about 50 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
  JEPS118096  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
  CHSC40560  Baccharis douglasii Lowell Ahart 1985-10-12 5196 Butte Near the east side of Kunkle Reservoir, about 2 miles south of Paradise. 502 Comment
  SEINET10474453  Baccharis pilularis subsp. consanguinea Mary Susan Taylor 1979-3-20 Taylor 1961 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
  CHSC279  Baccharis salicifolia B. Richardson 1929-4-18 Butte Near Chico. Comment
  CHSC81461  Baccharis salicifolia Petra M. Lee 2000-4-30 Butte Chico. 1 mile NE of Horseshoe Lake in Upper Bidwell Park. 91 Comment
  CHSC55145  Bacopa eisenii Lowell Ahart 1991-10-25 6732 Butte At the Rice Experiment Station, south of Highway 162, about 3.5 miles north-west of Biggs. 30 Comment
  SFV3762  Balsamorhiza sagittata M. L. Vincent 1962-4-20 218 Butte Sierra Nevada Paradise. Stearns Road, 0.5 miles west of Harrison Road. Roadside. 530 Comment
  CAS-BOT-BC16377  Barbarea orthoceras Lowell Ahart 1987-5-6 5565 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC36683  Barbarea orthoceras R. E. Preston 1982-7-21 347 Butte At roadside; ca. 1/4 mi se of Philbrook Reservoir. 1706 Comment
  CHSC48314  Barbarea orthoceras Vernon Oswald 1984-5-9 1180 Butte Near Camp Lassen, Chico Meadows on Scout Rd ca. 1 mi n of Butte Meadows. 1292 Comment
  CHSC90616  Barbarea orthoceras Sean P. Gallagher 1988-4-20 8 Butte Ca. 0.5 mi w of highway 32 n side of Big Chico Creek. 89 Comment
  JEPS119501  Bellis perennis Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17820 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC33575  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-21 3553 Butte Ca. 500 ft s of creek crossing rd, e side of spur rd (to Old Utah Mine) ca. 0.5 mi n of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi ne of Magalia. 792 Comment
  SEINET3449099  Bergia texana Unknown 2002-12-6 10021 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 20 Comment
  CHSC25452  Bidens frondosa Marc Hayes; Warner 1977-9-12 101 Butte Ca. 10 m N of wooden foot-bridge across W branch of Clear Creek on Butte College Campus near the intersection of Pentz and Clark Rds. 82 Comment
  CHSC44047  Bistorta bistortoides L. P. Janeway 1987-6-27 2349 Butte Open alder-fringed mdw just east of Keyser Cr, 4.3 mi north of Ramsey Bar along the Concow Rd. 1478 Comment
  RSA32711  Boechera breweri A. A. Heller 1920-3-28 13359 Butte Ten Mile House. Comment
  CHSC109135  Boechera breweri subsp. shastaensis Lowell Ahart 2012-2-22 17744 Butte On the north side of a very large basalt outcrop, about 400 yards east of Big Chico Creek, about 100 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. 254 Comment
  CHSC28770  Boechera suffrutescens J. D. Jokerst; M. S. Taylor 1979-6-21 296 Butte Slope of Humboldt Peak, NE. corner of Butte Co. Comment
  SEINET10453129  Boisduvalia densiflora Mary Susan Taylor 1975-6-30 Taylor 817 Butte Ca. 1/4 mi W of Cohasset Hwy, ca. 400 yds N of Greenwood Store, Cohasset; Yellow Pine Forest. 853 Comment
  CHSC66455  Bolboschoenus glaucus Vernon H. Oswald 1996-6-10 7757 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Seasonal marsh in the NE corner of Tract 7.2, Sanctuary I. 33 Comment
  CHSC34780  Bolboschoenus maritimus subsp. paludosus L. Ahart 1981-11-6 3226 Butte Small ditch, w of parking area, e of Graylodge Waterfowl Mgmt HQ, ca. 1/4 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  UC1751229  Botrychium simplex Timothy B. Devine 1985-7-7 846 b Butte beside Willow Creek about 1/4 mi N of jct with road to Colby Mt. Lookout Jonesville 1524 Comment
  UC777275  Botrychium simplex W. H. Wagner Jr. 1949-7-16 4610 Butte 1 mi NW of Jonesville (300 yds W of Willow Creek, just below dirt road parallel to it) Comment
  CHSC43058  Boykinia major L. P. Janeway 1987-6-26 2321 Butte SW end of Logue Meadows. 1325 Comment
  UC1198849  Boykinia major C. M. Wilder 1912-7-18 1696 Butte Martin's Camp Comment
  CHSC48895  Boykinia occidentalis Vernon Oswald 1984-7-25 1629 Butte Upper Bidwell Park, Chico, ca. 200 ft w of Day Camp on the s side of Chico Creek. Growing on a vertical sandstone cliff 8 ft above the summer level of the creek. 91 Comment
  CHSC86863  Brachypodium distachyon L. P. Janeway; John Hunt 2003-5-21 7792 Butte Northern Sierra Nevada Foothills. Foreman Creek Recreation Area, Lake Oroville; top of north/south trending ridge between Foreman Creek and Lake Oroville to the west; 2.6 km west-northwest of Canyon Creek Bridge. 442 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
  CDA5622  Briza minor L. Ahart 2005-4-14 11710 -A Butte East of the railroad tracks, north of Spruce Street, Gridley. Comment
  CHSC101761  Briza minor Lowell Ahart 2009-5-23 15729 Butte Opening in a drainage, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  JEPS103416  Briza minor Lowell Ahart 2002-4-24 9537 Butte 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
  CHSC29288  Brodiaea coronaria R. A. Schlising 1980-5-29 3604 Butte Richvale vernal pools. 1/4 mi S of jct Hwy 162 (east to Oroville) and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC49484  Brodiaea coronaria Vernon Oswald 1986-5-12 2003 Butte Goodspeed-Watt Rd. 2.6 mi n of Hwy 162. 30 Comment
  CHSC78756  Brodiaea coronaria subsp. coronaria L. P. Janeway 2000-5-14 6722 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  POM169538  Brodiaea elegans subsp. elegans A. A. Heller, H. E. Brown 1902-5-8 5492 Butte Berry Canyon (near Clear Creek) Comment
  CHSC40272  Brodiaea sierrae Lowell Ahart 1985-6-30 5084 Butte Along the road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC89881  Brodiaea sierrae L. P. Janeway; B. Castro 2004-6-13 8132 Butte Northern High Sierra Nevada. Along Old Forbestown Road 2.5 road km southeast of Forbestown Reservoir Road; 3.6 air km east of Forbestown; near headwaters of Costa Creek. South-facing slopes. 829 Comment
  UCD139163  Brodiaea sierrae Lowell Ahart 1998-7-10 8036 Butte on the southeast side of North Honcut Creek, Peter Ahart Ranch, about 1.5 miles north and 2.75 miles east of Honcut about 12 miles southeast of Oroville. 54 Comment
  JEPS106169  Bromus carinatus var. carinatus Lowell Ahart 2004-6-22 11115 Butte On the north side of Doe Mill Road, about 100 yards 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
  CHSC49515  Bromus carinatus var. marginatus Vernon Oswald; Lowell Ahart 1987-7-1 3088 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connection Humboldt and Humbug Rds,ca. 2.5 mi ene of Jonesville. 1780 Comment
  JEPS115992  Bromus catharticus Lowell Ahart 2009-5-8 15666 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 Comment
  CHSC31945  Bromus diandrus J. D. Jokerst 1979-4-20 1212 Butte E edge of the top of North Table Mt., ca. 0.75 mi N of Cherokee Rd. 396 Comment
  CHSC56627  Bromus hordeaceus J. Lund 1980-4-18 Butte 0.9 mi east of Hicks Lane on the south side of Keefer Road, ca 50 ft from the edge of the road. 91 Comment
  CHSC43202  Bromus laevipes Robert Banchero 1981-7-21 624 Butte 2 air miles se of Jonesville, near Snow Mountain. Near small spring. 2011 Comment
  CAS-BOT-BC162358  Bromus madritensis John Thomas Howell; Gordon H. True 1967-6-11 42558 Butte Sierra Nevada. On northwest side of Feather RIver Canyon near Pulga Bridge. Comment
  UCD58983  Bromus madritensis Collector unknown 1951-1 Butte Cherokee. 9.5 miles (in direct line) north of Oroville. 373 Comment
  CHSC2152  Bromus madritensis subsp. rubens M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC162201  Bromus orcuttianus L. P. Janeway 1995-7-27 4877 Butte Top of Jackson Ranch Ridge, along Road 21N25Y ca. 0.6 mile east of the western end of the ridge. 1143 Comment
  CAS-BOT-BC162203  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  JEPS106240  Bromus orcuttianus Lowell Ahart 2004-7-11 11232 Butte Along the road, on the northeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City 814 Comment
  CAS-BOT-BC161502  Bromus tectorum A. A. Heller 1919-5-17 13163 Butte Banks of the Feather River near Stirling. Comment
  CHSC61366  Bromus vulgaris Lowell Ahart 1993-7-22 7073 Butte On the west side of the dirt road, about 1/2 mile north-west of Camp 18, about 5 1/2 miles (air) north-east of Feather Falls. 1097 Comment
  CHSC30870  Bulbostylis capillaris J. D. Jokerst 1980-7-18 994 Butte Top of North Table Mtn, ca 200 m NW of the jct of Cherokee Road and the E edge of Mtn. Comment
  JEPS118487  Bulbostylis capillaris Lowell Ahart 2011-7-9 17564 Butte Area of almost bare rock, about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush creek, about 15 miles (air) northeast of Oroville 1009 Comment
  JEPS87443  Bulbostylis capillaris Lowell Ahart 1993-7-29 7117 Butte 2.5 mi ne Bald Mountain (about 6.5 mi ne of Stirling City) 1584 Comment
  SEINET4169758  Calliprora scabra A. A. Heller 1938-4-23 15047 Butte Between the Las Plumas road and Jarboe Pass on the Feather River Highway. Transition Life Zone 610 Comment
  CHSC103717  Callitriche heterophylla var. bolanderi Lowell Ahart 2010-5-14 16650 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
  CAS-BOT-BC80355  Calocedrus decurrens Lowell Ahart 1967-2-10 s.n. Butte Near Challenge 762 Comment
  CHSC27198  Calocedrus decurrens P. Moyer 1971-10-2 27 Butte N side Ed.-Psych. Bldg. On CSUC campus. 60 Comment
  CHSC24842  Calochortus albus T. L. Reynolds 1976-4-23 58 Butte 2.9 mi ne of Covered Bridge, 9.8 mi e of Chico. 198 Comment
  CHSC29726  Calochortus albus J. D. Jokerst 1980-4-17 585 Butte Top of North Table Mt, northern tip. 472 Comment
  CHSC2231  Calochortus coeruleus R. M. Staley 1953-7-17 Butte Canyon Creek. Comment
  CAS-BOT-BC487813  Calochortus coeruleus Saichi Kawahara 1968-5-4 367 Butte James ripley's property, Graham Road, Paradise 640 Comment
  UC600460  Calochortus leichtlinii E. B. Copeland 1931-7-12 Butte ridge between Jones and Willow Creek; Jonesville 1700 Comment
  CHSC7131  Calochortus luteus J. Borgstrom 1969-5-2 22 Butte Ca 6 mi s of Chico on 99E, 20 ft. off of w side of highway. 47 Comment
  CAS-BOT-BC491847  Calochortus luteus Mrs. J. H. Morrison 1932-5-8 s.n. Butte Durham Comment
  CAS-BOT-BC491857  Calochortus luteus Carl B. Wolf 1937-6-12 2851 Butte Northern Sierra Nevada Foothills, 11 mi. below Magalia on Oroville Road 152 Comment
  CHSC44981  Calochortus monophyllus Phillip Scott 1988-4-23 45 Butte Cohasset Road, ca. 3.0 mi n of Cohasset. 1066 Comment
  POM109676  Calochortus monophyllus C. C. Bruce 1897-05 2116 Butte Little Chico, Butte Creek Comment
  SEINET12047249  Calochortus monophyllus W. F. Babb 1980-1 7 Butte W side of Pentz Rd, ca 3.2 km S of Paradise Comment
  CHSC47071  Calochortus nudus R. A. Schlising 1988-7-11 4593 Butte E of Stirling City, on road to Crane Valley, just beyond junction with Concow Road and Keyser Creek. 1706 Comment
  CAS-BOT-BC493345  Calochortus superbus Lowell Ahart 1989-5-28 6297 Butte South of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, 335 Comment
  POM109542  Calochortus tolmiei C. C. Bruce 1898-05 2407 Butte [No locality information provided] Comment
  RSA255535  Calycadenia ciliosa Gerald D. Carr 1971-6-15 561 Butte 1.6 miles west of east boundary of Upper Bidwell Park, southeast of Chico Comment
  CHSC46281  Calycadenia fremontii Vernon H. Oswald 1989-5-10 3762 Butte Wurlitzer Unit, Vina Plains Preserve. Bordering a dry wash between Singer and Pine Creeks near the E boundary. 57 Comment
  UC1971740  Calycadenia fremontii R. L. Carr 1981-5-23 2231 Butte Near (W) of Hwy 99, ca. 10 mi NW of Chico and ca. 1/2 mi S of Broyles Road Comment
  CHSC46912  Calycadenia multiglandulosa Lowell Ahart 1972-10-4 145 Butte Peter Ahart Ranch, ca. 1 1/2 mi N and 2 1/4 mi E of Honcut, about 12 miles south of Oroville. 45 Comment
  HSC103922  Calycadenia multiglandulosa L. Ahart 2013-7-1 18817 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  JEPS80686  Calycadenia multiglandulosa L. R. Heckard and T. I. Chuang 1981-6-11 5537 Butte 0.5 mi w of junction (ca. 12 air mi e of Oroville) Lumpkin Road (along Forbestown Road) 609 Comment
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Dec 21 2012
  CAS-BOT-BC106077  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte Sierra foothills 10 miles east of Oroville on open hills. Comment
  CAS-BOT-BC106081  Calycadenia oppositifolia John Thomas Howell 1951-6-26 27513 Butte Feather River Canyon, Sierra Nevada 213 Comment
  CAS-BOT-BC106083  Calycadenia oppositifolia John Thomas Howell 1955-6-14 30454 Butte Magalia 731 Comment
  CAS-BOT-BC106090  Calycadenia oppositifolia David D. Keck 1933-5-31 2411 Butte 4.3 miles N. of Chico on Richardson Springs Road. Comment
  CHSC23367  Calycadenia oppositifolia R. A. Schlising 1975-5-31 3161 Butte Bidwell Park on ridge above (N) of Golf course. Comment
  CHSC45089  Calycadenia oppositifolia L. P. Janeway 1988-6-14 2759 Butte Little Chico Cr ca 1 3/4 air mi S of Ten Mile House, along the road to Doe Mill Ridge. NW-facing slope on SE side of cyn. 274 Comment
  CHSC84732  Calycadenia oppositifolia L. P. Janeway; John Hunt 2003-6-20 7854 Butte Northern Sierra Nevada Foothills. Along west edge of West Branch Feather River arm of Lake Oroville, 755 m north of Lime Saddle. 277 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
  UC1971681  Calycadenia spicata G. D. Carr 1971-6-5 559 Butte Larkin Rd. 1.1 mi SW of jct with W Oroville Dam Blvd., near Oroville Comment
  CHSC39328  Calycadenia truncata Lowell Ahart 1983-6-26 4153 Butte Along the edge of Ponderosa Way, about 1 1/2 miles southeast of the East Fork of Canyon Creek, about 14 1/2 miles northeast of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  UC894266  Calycadenia truncata A. A. Heller 1938-6-14 15152 Butte 23 mi from, on Feather River highway Oroville Comment
  UC1953745  Calycadenia truncata R. L. Carr 1986-10-3 2266 Butte NE of Oroville, Olive Hwy (162, Oroville-Quincy Road), 3.6 mi NE of Forbestown Rd, ca. 0.5 mi N of Bidwell Bar Bridge Comment
  CHSC101745  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
  RSA168723  Calycanthus occidentalis R. M. Straw 1962-6-26 2194 Butte Canyon of Middle Fork of the Feather River near Millsaps Bar. [Milsap Bar] 305 Comment
  SEINET10535838  Calycanthus occidentalis Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5509 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC1363  Calyptridium monospermum 1954-5-30 Butte Rag dump 5, near Stirling. 1127 Comment
  CHSC43717  Calyptridium monospermum Vernon Oswald 1983-6-22 727 Butte Calif. Hwy. 32 2.8 mi n-e of Forest Ranch. 899 Comment
  CHSC94164  Calystegia atriplicifolia subsp. buttensis Lowell Ahart 2006-6-24 12858 Butte Disturbed area on the west side of the dirt road (Ponderosa Way), at an intersection, a gated road goes northwest, on Cohasset Ridge, about 3 3/4 miles (air) northeast of Cohasset. 1127 Comment
  CAS-BOT-BC221230  Calystegia malacophylla subsp. malacophylla Lowell Ahart 1982-9-29 3832 Butte At the north end of the Lost Creek Res. Dam, about 2 miles north-west of Strawberry Valley 1100 Comment
  SD122560  Calystegia occidentalis Lowell Ahart, Peter Ahart 1984-6-10 4717 Butte 2.0 miles southwest of Forbestown Diversion Dam, northeast of Forbestown. 700 Comment
  CHSC93871  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2006-6-9 12642 Butte On the sides of a dead end side road, north side of the service road to Bardees Bar along the North Fork of the Feather River, about 50 yards east of the electric tower, on the east side of Highway 70, about 2 3/4 miles (air) southwest of Pulga. 534 Comment
  JEPS103331  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2002-6-21 9734 Butte On a mountainside, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  JEPS118206  Calystegia occidentalis subsp. occidentalis Dean W. Taylor 2004-6-17 19114 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  RSA21311  Calystegia occidentalis subsp. occidentalis C. B. Wolf 1937-5-13 8656 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  CHSC95183  Camassia quamash subsp. quamash R. D. Fischer 2005-6-5 827 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
  CHSC108832  Camissonia contorta Lowell Ahart 2012-4-17 17882 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
  CHSC44514  Camissonia contorta Lowell Ahart 1988-5-30 6018 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC78240  Campanula scouleri Lowell Ahart 2000-7-7 8554 Butte Campground area, on the south side of Fall River, about 100 yards west of the bridge across Fall River, about 3 miles north of Lumpkin Ridge Road, about 5 miles (air) northeast of Feather Falls. 1036 Comment
  SEINET10458022  Campsis radicans Mary Susan Taylor 1975-6-30 Taylor 823 Butte 1456 Arcadian, Chico; ornamental. 61 Comment
  CHSC101274  Capsella bursa-pastoris Lowell Ahart 2009-4-3 15526 Butte Along margins of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  JEPS103602  Capsella bursa-pastoris Lowell Ahart 2002-3-2 9415 Butte Along the sides of a dirt road by a rice field, W of the Midway, ca 1 mile N of Richvale. 30 Comment
  UC204873  Capsella bursa-pastoris A. A. Heller 1914-3-17 11204 Butte Chico Comment
  UC1609151  Cardamine californica Vernon H. Oswald and Lowell Ahart 1993-4-19 5280 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmille Peak (Lookout ene of Magalia); Lookout, ene of Magalia 701 Comment
  CHSC103665  Cardamine oligosperma Lowell Ahart 2010-2-13 16566 Butte Parking area, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  UC855791  Cardamine oligosperma A. A. Heller 1914-3-12 11196 Butte Canyon of Big Chico Creek 68 Comment
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Feb 17 2016
  CAS-BOT-BC38061  Cardamine pachystigma Lowell Ahart 1983-3-28 3906 Butte About 0.5 mile southwest of the Forbestown Reservoir, along the road. About 4 miles northeast of Forbestown. 450 Comment
  CHSC82709  Cardamine pachystigma L. P. Janeway; B. Castro 2002-3-27 7456 Butte Northern High Sierra Nevada. North slope of Big Bend Mountain about one third way down to North Fork Feather River; 1.0 km south-southeast of mouth of China Gulch. 652 Comment
  CHSC52279  Carex abrupta L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3081 Butte Near Scotts Joh Cr 2.7 mi N of the Humboldt-to-Humbug Road. 1920 Comment
  CHSC68907  Carex amplifolia Lowell Ahart 1997-7-11 7749 Butte Edges of a small stream from springs, north of the dirt road, southeast of Cold Creek, about 2 miles (air) southwest of Bald Mountain, about 9 miles by road from Stirling City, or about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC53715  Carex angustata L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3089 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  JEPS106373  Carex angustata Lowell Ahart 2004-7-23 11310 Butte In a small bog, on the south side of the dirt road, about 200 yards east of the large bog, about 3/8 mile (air) east of Bald Mountain Lookout, about 4 1/4 miles (air) northeast of Stirling City 1702 Comment
  RSA769592  Carex angustata L. Ahart 2010-9-28 17261 Butte West edge of 10 acre meadow, about 50 yards east of the poor dirt road, about 20 yards west of Big Kimshew Creek, about 1.5 air miles northeast of Jones Meadow, about 2.5 air miles southeast of Philbrook Reservoir. 1887 Comment
  CHSC11935  Carex athrostachya E. B. Copeland 1929-7-28 607 a Butte Jonesville. 1550 Comment
  CAS-BOT-BC19106  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville. 1500 Comment
  CHSC44693  Carex aurea L. P. Janeway; R. A. Schlising 1988-7-16 3025 Butte Large mdw at head of Willow Cr. 1935 Comment
  CAS-BOT-BC19412  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  JEPS124417  Carex bolanderi Lowell Ahart 2015-6-16 20232 Butte About 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. Comment
  CAS-BOT-BC19416  Carex bolanderi L. P. Janeway 1988-6-19 2838 Butte 3.3 mile north of Stirling City towards Inskip, along loggin road 0.2 mile west of Skyway. 1219 Comment
  SEINET10817915  Carex bolanderi A. Arthur Heller 1928-6-16 Heller 14667 Butte Damp, grassy places in the Yello Pine Forest at Butte Meadows. Comment
  CHSC45063  Carex brainerdii Vernon Oswald 1987-6-9 2976 Butte Forest Service Rd. to Snow Mt. which joins Humbug Rd. in the sw quarter of section 21, at a point slightly south of the spur to Summit Lake. 1950 Comment
  CHSC42691  Carex capitata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2505 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC44104  Carex cusickii L. P. Janeway 1987-6-26 2325 Butte Open mdw just NW of Logue Mdws along road to Lynch Mdws. 1325 Comment
  HSC89408  Carex cusickii Sandy Morey 1983-7-23 575 Butte Cherry Hill Meadow, on N side of Humboldt Rd., 3.2 mi. E of Butte Meadows 1414 Comment
  SEINET4289467 Image available Carex cusickii L. Janeway, Gog, L 2008-1 3197 B Butte Pat's Meadow. Along Butte Creek, 0.6 mi. W of Cherry Creek Campground. Comment
  CHSC111018  Carex cyrtostachya L. P. Janeway; Lowell Ahart, Linnea Hanson 2007-7-10 9112 Butte Northern High Sierra Nevada. Small seepage/drainage (now dry) on the west edge of a low broad granite slab, 170 m east-northeast of Bean Creek Road and 1.1 km northeast of Little Bald Rock. 1013 Comment
  SEINET13095768  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper West Branch Know-Nothing Creek, ca 1 mi SW of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca 4 air mi NE of Feather Falls. 1220 Comment
  SEINET7556722 Image available Carex densa Unknown 2003-4-22 7760 Butte Oroville Quad. Northern Sierra Nevada Foothills. 274 m west of Lake Oroville and Bloomer Cove Campground, 5.3 km southwest of Bloomer Hill. 302 Comment
  UC827031  Carex deweyana subsp. leptopoda Lewis S. Rose 1937-6-10 37364 Butte Hurleton 579 Comment
  RSA0045627  Carex divulsa Lowell A. Ahart 2012-5-25 18113 Butte Nnorthwest of the intersection of W. Frances Willard Avenue and Arcadian Avenue, one block south of Chico High School, Chico. 59 Comment
  CHSC111961  Carex divulsa subsp. divulsa Lowell Ahart 2012-5-25 18113 Butte On dry good soil, not maintained lawn, NW of intersection of W. Frances Willard Ave. and Arcadian Ave., 1 block so. of Chico High School, Chico. 59 Comment
  HSC87066  Carex feta L. P. Janeway 1988-6-16 2799 Butte Along road on W side of canyon of Butte Creek, 3.5 mi. S of Humboldt Rd. 1296 Comment
  JEPS114981  Carex feta Lowell Ahart 2008-6-13 14818 Butte East side of a small meadow, bottom of an old gold mined area, about 150 yards west of the cemetery, about 150 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville 311 Comment
  UC1748323  Carex feta L. P. Janeway 1995-7-16 4860 Butte along Concow Road 8.2 mi E of West Branch Feather River Breakneck Canyon, E side (0.8 mi NW of Oak Point; 0.8 mi E of Transfer Ridge; 1.5 mi N of Kimshew Creek) 1402 Comment
  UCD140309  Carex feta L. P. Janeway 1988-6-14 2783 Butte upper reaches of Haw Creek, 1.75 air miles SE of Lomo. 1226 Comment
  SEINET7468095 Image available Carex fracta Ray Tallent 1987-8-18 953 Butte Lassen National Forest; Along Jones Creek, NE of Jonesville. 1720 Comment
  SEINET7559906 Image available Carex globosa John Thomas Howell, Gordon H. True 1969-4-9 45490 Butte Magalia. 701 Comment
  CHSC84751  Carex gracilior L. P. Janeway; John Hunt 2003-5-8 7782 Butte Sacramento Valley. North end of Chico; along Sycamore Creek 160 m west of Cohasset Road bridge. 56 Comment
  CHSC99389  Carex heteroneura Robert F. C. Naczi; Lawrence P. Janeway 2004-7-23 10517 Butte Ca. 6.4 mi SE of village of Butte Meadows, along Philbrook Creek, E of E end of Philbrook Reservoir. 1694 Comment
  CHSC45052  Carex heteroneura var. heteroneura Vernon Oswald 1987-6-9 2962 Butte Scotts John Creek where it crosses the connector road between Humboldt and Humbug roads, ca. 2.5 mi e of Jonesville. 1755 Comment
  CHSC102853  Carex hirtissima Peter F. Zika 2009-6-17 24516 Butte Cascade Range Highlands. Below Concow Road 10 road miles above (N of) Route 70. 1100 Comment
  CHSC47057  Carex hirtissima L. P. Janeway 1989-5-17 3243 Butte Along edge of Lower Forbestown Rd (a dirt road) 0.1 mi N of Forbestown Rd. 798 Comment
  SEINET4286153  Carex hoodii Unknown 2009-1 s.n. Butte Just E of Philbrook Reservoir. Comment
  UC600696  Carex hoodii H. F. Copeland 1929-6-10 1247 Butte Jonesville Comment
  JEPS121019  Carex inversa Peter F. Zika 2010-5-16 24827 Butte Baldwin Avenue near Spencer Avenue, Oroville Comment
  CHSC52917  Carex jonesii L. P. Janeway; R. A. Schlising 1988-7-22 3074 Butte Seep just above the High Lakes Road 2.4 mi W of the pass; canyon of Philbrook Creek. 1905 Comment
  POM80928  Carex lemmonii Marcus E. Jones 1897-7-9 s.n. Butte On road from Prattville to Chico, 13 miles down. 1524 Comment
  SEINET7899355 Image available Carex lemmonii H. F. Copeland 1932-7-17 s.n. Butte vicinity of Jonesville, Lassen National Forest Comment
  SEINET12649605 Image available Carex mesochorea Lowell Ahart 2010-1 16579 Butte 64 Comment
  SEINET10713512  Carex multicaulis Lawrence P. Janeway 1988-6-19 Janeway 2830 Butte T24N, R4E, Stirling City quad. NW1/4 of sec. 16. 2.4 mi N of Stirling City towards Inskip, along dirt logging road 0.1 mi W of Skyway. W-facing roadcut of steep soft dirt. With C. brainerdii. 1173 Comment
  CHSC44117  Carex nervina L. P. Janeway 1988-7-29 3116 Butte Along Butte Cr where Humboldt Rd crosses near Cherry Hill. 1402 Comment
  CHSC52250  Carex nudata L. P. Janeway 1988-4-10 2619 Butte Along Clear Creek just north of Durham-Pentz Rd. 80 Comment
  SEINET10711616  Carex nudata Lawrence P. Janeway 1988-6-14 Janeway 2768 Butte T25N, R3E, Stirling City quad. SE1/4 of sec. 34. Along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. Forming dense clumps in rocks at edge of and in te creek. With Darmera peltata. 922 Comment
  UCR228226  Carex pendula Peter F. Zika 2010-5-16 24824 Butte Sacramento Valley, Janeway's station, Comanche Creek, both sides of channel and bridge, junction of Breslauer Avenue and Lone Pine Avenue, southwest of Chico 45 Comment
  CHSC48558  Carex rossii L. P. Janeway; R. A. Schlising, B. Castro 1988-7-23 3088 Butte Scotts John Cr 2.3 mi N of the Butte Cr road. 1889 Comment
  SEINET10709381  Carex rossii Lawrence P. Janeway 1988-7-30 Janeway 3137 Butte T25N, R5E, Jonesville quad (15') NW 1/4 of sec. The ridge SE from Snow Mtn. N edge of ridgetop red fir forest and pine-mat manzanita chaparral. 2103 Comment
  CDA13292  Carex subfusca G. F. Hrusa, T. D. Wilfred 1996-7-9 13140 Butte Plumas National Forest; Jordan Creek, above waterfall nr. confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC52875  Carex subfusca L. P. Janeway; Patty Costello 1987-9-5 2577 Butte NW side of Big Chico Cr below the road to Soda Springs campground, near Hwy 32. 1127 Comment
  CHSC65601  Carex subfusca L. P. Janeway 1995-7-16 4861 Butte 0.8 mi northwest of Oak Point; 0.8 mi east of Transfer Ridge; east side of Breakneck Canyon 1.5 mi north of Kimshew Creek; along Concow Road 8.2 mi east of West Branch Feather River. 1402 Comment
  JEPS102955  Carex subfusca L. P. Janeway, B. Castro 2002-7-7 7620 Butte High Cascade Range. Along the County Road above Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout 1609 Comment
  JEPS120109  Carex subfusca Lowell Ahart 2012-6-28 18242 Butte On the north side of Big Chico Creek, east of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10912835  Carex subfusca Lawrence P. Janeway, C. A. Janeway 1986-9-13 Janeway 1846 Butte T26N, R5E, Jonesville quad (15') SE 1/4 of sec. 16. Just E of Scotts John Cr. above the Humboldt-to-Humbug road (rd 26N27). 1737 Comment
  SEINET4170161  Carex teneriformis E. B. Copeland 1929-7-20 611 Butte Jonesville, by Jones Creek 1500 Comment
  CAS-BOT-BC115304  Carex utriculata L. P. Janeway 1987-7-5 2460 Butte Open dryish meadow near Dresser Camp, 3.0 mi N of Jones Meadow, 1889 Comment
  CHSC45614  Carex utriculata L. P. Janeway 1988-7-2 2952 Butte Marsh/mdw at upper reach of Brush Creek, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CHSC75551  Carex xerophila G. F. Hrusa; T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada. Near summit of slope facing SSE above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. [Lat./Long. on label is '39 51 N, 121 34 W']. 750 Comment
  CHSC52372  Castilleja affinis J. D. Jokerst 1985-3-31 2189 Butte Top of North Table Mountain at its west edge ca. 1/2 mile NW of Phantom Falls adjacent to an unnamed creek and waterfall. 396 Comment
  LA209082  Castilleja affinis subsp. affinis Van esseiline; 1918-5-5 1726 Butte near niwshew [??] Comment
  HSC38034  Castilleja applegatei Thomas W. Nelson, Jane P. Nelson 1976-5-10 2487 Butte Just E of Magalia Comment
  CDA13899  Castilleja applegatei subsp. pinetorum G. F. Hrusa, T. D. Wilfred 1997-5-8 13756 Butte Sierra Nevada; on above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  JEPS115589  Castilleja applegatei subsp. pinetorum Lowell Ahart 2009-4-22 15594 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
  SD7119  Castilleja applegatei subsp. pinetorum Mrs. R. M. Austin 1883-1 Butte Butte County Comment
  UC1562305  Castilleja arachnoidea Vernon Oswald and Lowell Ahart 1990-7-19 4367 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 0.4 mi w of the Plumas County line) 2011 Comment
  CHSC116962  Castilleja attenuata Matthew Forster 2013-4-9 Butte Centerville Rd., along flumes trail. 335 Comment
  CHSC43168  Castilleja attenuata B. E. Olson 1975-5-5 17 Butte Ca. 300 m n of Helltown Bridge, ca. 200 m w of Butte Creek, 1.6 km n of Centerville, 22.5 km ene of Chico. 190 Comment
  CHSC43536  Castilleja attenuata Lowell Ahart 1979-4-17 1827 Butte North of Honcut Creek, about 1/2 mile north of Avocado Avenue and near bridge across North Honcut Creek, about 3 miles north-west of Bangor. 91 Comment
  JEPS103418  Castilleja attenuata Lowell Ahart 2002-4-24 9530 Butte 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
  CHSC9268  Castilleja exserta D. C. Burns 1971-4-4 120 Butte Ca. 20 yds. e of highway 70, ca. 7 mi n of Oroville. 82 Comment
  CHSC24783  Castilleja lacera C. E. Stopher 1976-4-13 18 Butte 2.4 km s of Forest Ranch. Comment
  CHSC29117  Castilleja lacera M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2458 Butte On n side of Swedes Flat Rd in dry open areas in Foothill Woodland, ca. 1 mi e of its jct with Oroville Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  CHSC30794  Castilleja lacera M. S. Taylor; J. D. Jokerst 1980-4-18 2533 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew, in Foothill Woodland. 518 Comment
  CHSC93991  Castilleja lacera R. D. Fischer 2004-6-20 777 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. West of pond in a cleared area. 1371 Comment
  CHSC37278  Castilleja miniata M. S. Taylor; L. Ahart 1981-8-16 4195 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC11071  Castilleja subinclusa Lowell Ahart 1968-3-14 Butte Swede's Flat Road, near Honcut Creek. 304 Comment
  SEINET7072991  Castilleja subinclusa A. G. Vestal 1963-5-30 s.n. Butte About 0.5 mile west of Forbestown. UTM Zone 10, 648208mE, 4375628mN. Coordinate datum: NAD27). Comment
  CHSC49013  Castilleja tenuis Vernon Oswald; Lowell Ahart 1987-7-1 3048 Butte Scotts John Rd. at 'Big Rock Meadow,' 1.0 mi n of the road connectiong Humbolt and Humbug Rds, ca. 2.5 mi ene of Jonesville. 1780 Comment
  SBBG28504  Ceanothus cordulatus E. B. Copeland 1929-7-14 Butte Jonesville 1550 Comment
  UC224215  Ceanothus cuneatus var. cuneatus H. E. Brown Mar 2 1897-Mar 22 1897 157 Butte near Clear Creek 53 Comment
  CHSC3371  Ceanothus integerrimus Robert L. Smith 1966-4-2 9 Butte Paradise 4 miles w of postoffice. Comment
  CHSC3514  Ceanothus integerrimus var. macrothyrsus John Francis 1966-4-16 107 Butte 1.5 miles E. of covered bridge (Honey Run); growing in grass-covered area beside road. Comment
  CHSC1513  Ceanothus lemmonii 1954-4-1 Butte Humbug road, 1/2 mi. below Nimshew. 762 Comment
  CHSC30308  Ceanothus lemmonii M. S. Taylor 1980-5-27 2736 Butte On n side of Bald Rock Rd, ca. 0.5 mi e of Big Bald Rock, ca. 4 mi e of Lake Madrone. 975 Comment
  CHSC4641  Ceanothus lemmonii R. Carter 1966-4-26 362 Butte Found ca. 10 mi. NE of Oroville along W side USFS road 21N40 to Bloomer Mt., growing along rocky roadside 1.4 mi. W from intersection with Oroville-Quincy Rd. 731 Comment
  LA44872  Ceanothus lemmonii Lewis S. Rose; 1937-6-10 37377 Butte Forbestown 838 Comment
  CAS-BOT-BC52007  Ceanothus prostratus A. A. Heller 1939-4-10 15371 Butte upper end of Cohasset Comment
  CHSC3578  Ceanothus prostratus Judy Lee Potter 1966-2-26 Butte 5 miles north Paradise (Magalia area). Comment
  SEINET194924  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  CHSC11991  Ceanothus velutinus E. B. Copeland 1930-6-29 424 Butte Jonesville. 1550 Comment
  UC2026878  Cedrus deodara Lowell Ahart 2012-10-12 18483 Butte About 50 yards east of the east side of the Deer Pen, east of the intersection of Chico Canyon Road (E 8th Street) and Forest Avenue, Lower Bidwell Park, Chico. Comment
  CHSC111741  Celtis australis Lowell Ahart; Susan Bazell, Josephine Guardino, Wess Dempsey 2012-7-5 18264 Butte Cedar Grove, parking area, Lower Bidwell Park, Chico. 71 Comment
  CDA7259  Centaurea maculosa L. L. Heinrichs 1973-6-25 Butte Stirling City 0 Comment
  CHSC31596  Centaurea melitensis L. Ahart 1977-5-8 1353 Butte Peter Ahart Ranch, Honcut. 50 Comment
  JEPS108984  Centaurea melitensis Lowell Ahart 2006-6-9 12659 Butte On the north side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 385 Comment
  RSA718333  Centaurea melitensis L. Ahart 2006-6-9 12659 Butte North side of Bardees Bar Road, north of the small stream, on the east side of the large stream, about 1/8 mile northwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2.75 air miles southwest of Pulga 386 Comment
  CHSC69446  Centaurea solstitialis Lowell Ahart 1997-9-6 7885 Butte Near the McNab Cypress grove, near the steel tower power line, along the sides of a logging road, about 1/4 mile west of Rim Road, about 2 miles (air) northeast of Concow Reservoir. 731 Comment
  CHSC37401  Centaurea stoebe subsp. micranthos R. Preston; R. Schlising 1982-8-26 4375 Butte N and e of De Sabla and Lovelock at 'Doon Camp' just n of Little West Fork of Feather River. Roadside. 865 Comment
  RSA716047  Centaurium muehlenbergii L. Ahart 2005-7-12 12139 Butte On the east side of Encina Grade Road (Bloomer Hill Road) (Forest Road 21N39), about 3/4 mile (air) south of Bloomer Hill, about five miles west of Oroville Quincy Highway. 734 Comment
  UC175570  Centaurium muehlenbergii A. A. Heller 1913-6-4 10777 Butte n of Oroville (Olive Ranch); Table Mountain Comment
  CHSC50673  Centaurium tenuiflorum Lowell Ahart 1990-6-16 6511 Butte Along a small streamlet at the Forbestown Generator, on the east side of the dirt road, on the east side of the Forbestown Reservoir. 487 Comment
  POM130643  Centaurium venustum E. B. Copeland 1903-7-27 3487 Butte Chico. Comment
  CHSC114167  Centromadia fitchii Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16790 Butte At junction of Forbestown Road and Oroville Highway (Highway 162). 372 Comment
  UCD138894  Cephalanthera austiniae Kenneth D. Stewart 1965-7-15 s.n. Butte State Highway 32, around 15 miles north of Forest Ranch. Comment
  SBBG128188  Cephalanthus occidentalis L. Ahart 2009-7-9 16019 Butte E side of Chico Crk, W of Ten Mile House Rd, Upper Bidwell Park, 0.75 mi W of Hwy 32 203 Comment
  CHSC118501  Cerastium glomeratum L. P. Janeway 2016-5-9 11954 Butte Northern High Sierra Nevada. Plumas National Forest; upper north-facing slope above the South Fork Feather River arm of Lake Oroville, 0.4 km northwest of the junction of Ponderosa Way and Road 19N19. 701 Comment
  CHSC44485  Cerastium glomeratum Lowell Ahart 1988-3-28 5947 Butte 1/10 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls. 1280 Comment
  JEPS122229  Cerastium glomeratum Lowell Ahart 2014-4-26 19416 Butte On the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experiment Station. Comment
  CAS-BOT-BC388257  Cerastium glomeratum A. A. Heller 1914-4-6 11268 Butte Hills 8 miles north of Oroville Comment
  SEINET4855320  Cerasus obliqua H. E. Brown 1896-10-2 117 Butte Near Oroville. 53 Comment
  UC1586402  Ceratophyllum demersum Lowell Ahart 1991-9-14 6718 Butte about 2 mi e Honcut (Joie Osgood Ranch) 45 Comment
  CHSC45906  Cercis occidentalis Lowell Ahart 1973-3-26 185 Butte Growing along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC59347  Cercocarpus betuloides var. betuloides Darby Kremer 1992-4-18 3 Butte Ponderosa Canyon Rd. 7 km. w of Skyway Hwy. 6 km. n of Magalia. 265 Comment
  CHSC40473  Chaenactis glabriuscula var. heterocarpha Lowell Ahart 1985-5-15 4968 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CHSC109567  Chamaebatia foliolosa L. P. Janeway 2012-6-27 10915 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. Opening in mixed conifer forest. 1000 Comment
  CHSC3023  Chamaecyparis lawsoniana Carl Pejsa 1958-4-19 28 Butte Bidwell Park Forestry Station. Comment
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Jul 25 2018
  SEINET9250421  Chamaesyce hooveri B. Crampton 1978-1 Butte Comment
  CHSC27940  Chamaesyce maculata M. S. Taylor 1978-7-18 1704 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte Co and Tehama Co line. 2158 Comment
  JEPS120617  Chamaesyce maculata Lowell Ahart 2013-11-13 19252 Butte Along road, about 100 yards west of the intersection of Sucker Run Road and Ponderosa Way, about 400 yards north of the Ponderosa Dam spillway. Comment
  SBBG27221  Chamaesyce maculata W. H. Wheeler 1935-10-24 296 Butte about building, Foreign Plant Introduction Station, Chico 76 Comment
  UC175374  Chamaesyce ocellata A. A. Heller 1913-9-24 11143 Butte 8 mi n Oroville (Table Mtn Olive Ranch) 121 Comment
  CHSC11782  Chamerion angustifolium subsp. circumvagum E. B. Copeland 1930-7-21 428 Butte Jonesville. 1600 Comment
  SEINET10529950  Cheilanthes californica Mary Susan Taylor 1980-2-17 Taylor 2356 Butte T20N R6E ne sec 5. Along a dirt road in Yellow Pine Forest, ca. 1/4 mi SW of Lower Forbestown Road, ca. 3 mi W of Forbestown. 396 Comment
  SEINET10899933  Cheilanthes californica Mary Susan Taylor, Vernon H. Oswald 1983-1-14 Taylor 5213 Butte T22N R2E ne sec 3. Devils Kitchen, Upper Bidwell Park, 900 ft. Dry crevices of rock cliffs. Elevation 900 ft. 274 Comment
  CHSC116110  Cheilanthes gracillima Lowell Ahart 2015-10-9 20547 Butte Large outcrop on the northside of the dirt road to Lotts Lake, about 1/8 mile southeast of the Carr Mine, about 3 miles (air) east of Philbrook Reservoir dam. 1842 Comment
  CHSC39234  Cheilanthes gracillima M. S. Taylor; L. Ahart, J. Jokerst 1982-1-17 5214 Butte Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. 373 Comment
  SEINET10529917  Cheilanthes gracillima Mary Susan Taylor 1980-5-27 Taylor 2663 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC45544  Chenopodium album Lowell Ahart 1976-6-27 1150 Butte At the old sheep barn, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10479003  Chenopodium album Mary Susan Taylor 1980-7-6 Taylor 3062 Butte T25N R3E se sec 10, Butte Meadows quad; on W side of Hwy 32, ca. 0.1 mi S of Loma, up on rocky open edge of Yellow Pine Forest. With R.A. Schlising. 1128 Comment
  UC600744  Chenopodium berlandieri H. F. Copeland 1930-7-26 Butte Canyon of Butte Creek Jonesville Comment
  SEINET9340404  Chenopodium desiccatum Unknown 2007-10-7 13065 Butte Northern Sacramento Valley Comment
  JEPS114998  Chenopodium pumilio Lowell Ahart 2007-11-3 14566 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CDA34648  Chenopodium strictum var. glaucophyllum L. Ahart 2009-8-13 16281 Butte At the south end of the cement barrier that controls the waster flow into Mud Creek, the north part of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. Comment
  CHSC110403  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18457 Butte Restoration area, south of Vallombrosa Avenue, north of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 Comment
  CHSC94657  Chenopodium strictum var. glaucophyllum Lowell Ahart 2006-9-28 13368 Butte On the east side of the North Fork of the Feather River, on the west side of Highway 70, about 50 yards southwest of the Shady Rest Area south of the Arch Rock Tunnel. 445 Comment
  CDA13278  Chimaphila umbellata G. F. Hrusa, T. D. Wilfred 1996-7-9 13126 Butte Plumas National Forest; on N ridge above Jordan Creek. Jordan Creek headwaters S of Hwy 162 near Roger's Cow Camp. Comment
  CHSC87541  Chlorogalum angustifolium R. D. Fischer; Jenny Marr 2004-4-27 137 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at north end of Disk Golf Course, near the top of the north-connecting trail going down toward Guardian Trail. Scattered throughout Disk Golf Course. 381 Comment
  CDA20065  Chondrilla juncea E. Finley 2002-10-2 PDR 1035510 Butte Northern California; Lumpkin Rd near Enterprise Bridge. 0 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
  UC1562426  Chorizanthe membranacea Lowell Ahart 1990-5-25 6479 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 271 Comment
  SEINET10970722  Chorizanthe polygonoides Mary Susan Taylor, Vernon H. Oswald 1984-4-4 Taylor 5392 Butte T23N R3E sec 27? S side of Humbug Rd, ca. 2 mi SW of Nimshew, ca. 12 air mi NE of Chico. Open rocky bare slope within Foothill Woodland. Comment
  CHSC108991  Chorizanthe polygonoides var. polygonoides Lowell Ahart 2012-4-30 17944 Butte North end of the Disc Golf Area, about 50 yards west of Highway 32, about 5 miles (air) northeast of Chico. 395 Comment
  CHSC97362  Chorizanthe polygonoides var. polygonoides Paul Maslin 2005-5-1 58 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10608340E 4408370N. 518 Comment
  CHSC11843  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  CDA1320  Cirsium occidentale var. candidissimum T. C. Fuller 1958-7-7 1908 Butte 1 mi. S of Pulga; roadside 0.1 mi. N of bridge over North Fork Feather River. 0 Comment
  CHSC38337  Cirsium occidentale var. venustum Vernon Oswald 1983-5-30 581 Butte Upper Bidwell Park, Chico, on the north rim ca. 1600 ft e of the power lines. 274 Comment
  CDA20040  Cirsium vulgare H. Bloo, B. Voorhees 2002-9-5 PDR 1174351 Butte Sacramento Valley; at Bidwell Golf Course. 0 Comment
  CHSC3329  Clarkia concinna subsp. concinna Robert L. Smith 1966-5-17 4 Butte Honey Run Rd., 3 miles W of Paradise. Comment
  CAS-BOT-BC164521  Clarkia gracilis subsp. albicaulis Mrs. C. C. Bruce 1892-5-1 1954 Butte Little Chico Comment
  CAS-BOT-BC164523  Clarkia gracilis subsp. albicaulis Lowell Ahart 1987-5-9 5605 Butte Near the bridge across the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 304 Comment
  CHSC39038  Clarkia gracilis subsp. albicaulis Lowell Ahart 1983-6-26 4159 Butte About 17 miles ne of Oroville, along Bean Creek Road, about 5 miles s of Little Bald Rock. 600 Comment
  CAS-BOT-BC171885  Clarkia gracilis subsp. gracilis Lowell Ahart 1983-6-26 4142 Butte Along Ponderosa Way, just a little south of the East Fork of Canyon Creek, 14 miles north-east of Oroville, Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CAS-BOT-BC163261  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-2 4426 Butte 1.3 mi south-southwest of Hungry Hunt Peak; along Road 22N84 2.6 mi from Rd 23N28 993 Comment
  CAS-BOT-BC163263  Clarkia mildrediae subsp. lutescens Lowell Ahart 1983-7-29 4248 Butte About 2 miles east of Milsap Bar, about 25 miles north-east of Oroville 1000 Comment
  CHSC37427  Clarkia mildrediae subsp. lutescens R. A. Schlising; K. Tarp 1982-7-28 4358 Butte SE of Pulga and S of Coyote Gap Station on road crossing Last Chance Creek. Roadside. 777 Comment
  JEPS103352  Clarkia mildrediae subsp. lutescens Lowell Ahart 2002-6-21 9731 Butte On road cut bank, Watson Ridge, ca 2 miles (air) NE of Bald Rock Dome, ca 5 miles (air) N of Feather Falls (the town). 1086 Comment
  CHSC91668  Clarkia mildrediae subsp. mildrediae L. P. Janeway; Samantha Mackey Hillaire 2005-7-11 8489 Butte Northern High Sierra Nevada. Near top of east side of broad ridge between Dogwood Creek and Camp Creek; 1.5 km southwest of confluence of Camp Creek and Lockerman Creek. Steep northeast-facing slope. 1079 Comment
  CHSC64111  Clarkia mosquinii L. P. Janeway 1994-7-7 4685 Butte Along Rd 23N60 0.9 mi east of Oroville-Quincy Hwy; south end of ridge above Little North Fork between Marble Creek and Spoon Ravine. 1127 Comment
  JEPS102944  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. Burned area 655 Comment
  UC1606713  Clarkia mosquinii subsp. mosquinii L. P. Janeway 1995-7-15 4857 Butte 1.1 mi s of Pompys Point (s side of Watson Ridge about 2.2 mi ene of its western end); Watson Ridge 1115 Comment
  CAS-BOT-BC172528  Clarkia purpurea subsp. purpurea A. A. Heller 1914-5-11 11384 Butte Hills 8 miles north of Oroville Comment
  CHSC33251  Clarkia purpurea subsp. purpurea R. A. Schlising 1979-6-5 3442 -1 Butte Richvale vernal pool area; 1/4 mile S of jct Hwy 162 to Oroville and Hwy 99; along the latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC172384  Clarkia purpurea subsp. viminea Mrs. H. C. Cantelow 1941-5-25 s.n. Butte West branch of Feather River, at junction with road to Las Plumas Comment
  CHSC59114  Clarkia rhomboidea L. P. Janeway 1991-6-1 3979 Butte West-facing cut-bank of Dark Canyon Road 0.9 mi south of Big Bend Road/Parkhill. 512 Comment
  CHSC70753  Clarkia rhomboidea L. P. Janeway 1993-7-2 4419 Butte Southwest side of Swayne Hill 1 mi northeast of mouth of French Creek; along Road 23N28 1.3 mi north of Road 22N34. 743 Comment
  RSA108407  Clarkia rhomboidea Harlan Lewis, M. Lewis 1947-6-11 398 Butte On Magalia to Stirling City Road, 1.4 mile from Magalia School Comment
  UC1143258  Clarkia rhomboidea H. and M. Lewis, F. Vasek 1950-6-30 758 Butte 0.8 mi s Arch Rock (Hwy. 24); Feather River Comment
  UC725469  Clarkia rhomboidea A. A. Heller 1938-5-30 15129 Butte on Feather River Hwy 2 mi w Arch Rock Tunnel (steep slope); ; W of Arch Rock Tunnel on the Feather River Highway, Butte Co. Comment
  CAS-BOT-BC165440  Clarkia unguiculata H. Lewis; M. Lewis; F. Vasek 1950-6-30 760 Butte Highway 24, 2.0 miles south of Arch Rock on Feather River Comment
  CHSC36088  Claytonia lanceolata R. A. Schlising; F. J. Fuller, K. Tarp 1982-7-12 4316 Butte NE part of county near Humbug Summit. 2042 Comment
  CAS-BOT-BC439428  Claytonia parviflora subsp. parviflora A. A. Heller 1920-4-10 13362 Butte New high school grounds at Chico Comment
  SEINET11933239  Claytonia perfoliata C. W. Dawson 1978-1 20 Butte 1.5 mi S of Paradise and jct of Pearson Rd and Clark Rd (Hwy 191), 800 ft NNW of Hwy at top of ridge 335 Comment
  CHSC77711  Claytonia perfoliata subsp. perfoliata Tim Stofer 1997-4-20 18 Butte On the east side of the trail 150 ft from the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. 76 Comment
  CHSC32676  Claytonia rubra subsp. rubra M. S. Taylor 1981-3-24 3432 Butte S side of Hwy 70 near creek entrance opposite Cresta Poserhouse. 487 Comment
  SEINET5337773  Clematis lasiantha S. Dean 1979-4-24 s.n. Butte Hwy 70. Feather River Canyon. Oroville-Quincy. Approximately 20 miles from Oroville. 1067 Comment
  CHSC11076  Collinsia heterophylla Lowell Ahart 1961-5-4 Butte Along Humbug Road, Chico. 152 Comment
  CHSC29820  Collinsia sparsiflora M. S. Taylor 1980-4-16 2482 Butte Lake Oroville State Recreation Area, Parish Camp (about 1/2 s of it), just south of Lime Saddle Memorial Park, ca. 5 mi s of Paradise. 304 Comment
  CHSC114963  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte On the south side of Beatson Hollow, south of where the small stream flows into the stream on the bottom of Beatson Hollow, about 1-1/4 miles (air) northwest of Cherokee Road, about 7miles (air) north of Oroville. 302 Comment
  JEPS124175  Collinsia sparsiflora var. collina Lowell Ahart 2015-3-14 19953 Butte About 1 1/4 miles (air) northwest of Cherokee Road, about 7 miles (air) north of Oroville. Comment
  CHSC44726  Collinsia tinctoria R. Banchero 1980-6-19 253 Butte Along Concow Rd 1.1 mi N of its jct with Hwy 70, 0.1 mi N of the town of Concow. 554 Comment
  CHSC82509  Collinsia tinctoria Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9732 Butte On a road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC93857  Collinsia tinctoria Lowell Ahart 2006-6-9 12654 Butte On the west side of Bardees Bar Road, north of the small stream, about 1/8 mile west of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga. 385 Comment
  POM252812  Collinsia tinctoria A. A. Heller 1938-5-28 15119 Butte On the Feather River Highway 23 miles from Oroville. Comment
  POM219432  Collomia grandiflora E. B. Copeland 1931-6-14 677 Butte Jonesville. 1550 Comment
  SEINET2440903  Collomia heterophylla R. M. McKee 1918-5-12 s.n. Butte Magalia. Comment
  UC1594615  Collomia linearis Lowell Ahart 1992-7-21 6819 Butte about 2 (air) mi ne Philbrook Reservoir (s side of hollow nw of a snow lake, on s side of Coon Hollow); Coon Hollow 1737 Comment
  UC600657  Collomia tinctoria H. F. Copeland 1937-9-4 954 Butte Jonesville Comment
  CDA32001  Convolvulus arvensis L. Ahart 2009-5-3 15787 Butte About 50 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  CHSC76939  Convolvulus arvensis Margie Collins 1894-5-1 Butte Chico. Comment
  JEPS120524  Conyza canadensis L. P. Janeway 2012-10-18 11082 Butte Sacramento Valley. Along Hwy 70 at wheelock Road / Coal Canyon Road. Comment
  UC127773  Corallorhiza maculata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  SEINET10931182  Cordylanthus hansenii Mary Susan Taylor 1979-10-13 Taylor 2258 Butte T22N R4E n half sec 17. Foothill Woodland on Jordan Hill Road (Ponderosa Way on some maps), ca. 4.8 mi N of its jct with Concow Road, ca. 2 mi E of Paradise. With Jim Jokerst. 610 Comment
  SEINET10549249  Cordylanthus pilosus subsp. bolanderi Lowell Ahart 1983-8-16 Ahart 4279 Butte Near Humboldt Rd, ca. 3 mi sw of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CHSC28383  Cordylanthus pilosus subsp. hansenii J. D. Jokerst 1979-10-13 386 Butte Jordan Hill Rd., 2.4 mi. N. of junction with Concow Cr. 609 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
  RSA4169  Cordylanthus tenuis subsp. viscidus E. B. Copeland 1929-7-29 469 Butte Jonesville. 1650 Comment
  UCD117251  Cornus nuttallii P. Thompson 1996-4-26 38 Butte Hwy 70. Belden. Along the main street through Belden. 1000 Comment
  SEINET12137171  Cornus nuttallii D. G. Bendix 1978-1 13 Butte 50 m NE of intersection of Dogtown Rd & Skyway, Magalia 830 Comment
  CHSC87801  Cornus sessilis Paul Maslin 2004-4-15 18 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609912E 4410265N. On edge of Big Chico Creek. 240 Comment
  SD7620  Cornus sessilis Mrs. R. M. Austin 1883-1 Butte Comment
  UCD95111  Corydalis caseana subsp. caseana E. B. Copeland 1929-7-3 365 Butte Jonesville. Big Spring, in Big Meadows, submerged in the artificial Lake Almanor. 1500 Comment
  SEINET3152046  Corydalis caseana subsp. caseana M. Ownbey, G. B. Ownbey 1946-6-24 2936 Butte 1.3 mi. below Jonesville Comment
  JEPS120055  Cotoneaster lacteus Lowell Ahart 2012-6-21 18223 Butte About 25 yards west of the Freeway, 70 yards south of Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC44467  Cotula australis Lowell Ahart 1988-11-27 5927 Butte Near the south-west corner of Wells Fargo Bank, Gridley. 28 Comment
  CHSC103942  Crassula aquatica Lowell Ahart 2010-5-22 16720 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
  CHSC113357  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte Sides of a cleaned ditch, on the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. 30 Comment
  CHSC33256  Crassula aquatica R. A. Schlising 1980-3-23 3524 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  SEINET10449700  Crassula aquatica Mary Susan Taylor 1982-4-28 Taylor 4358 Butte T17N R1E se/sw sec 13. Pennington qud. Graylodge Wildlife Refuge, n side of Rutherford Rd, ca. 1/2 mi w ofits jct with Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC90952  Crassula connata Lowell Ahart 2005-4-14 11724 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley. 28 Comment
  SEINET516423  Crassula saginoides Lowell Ahart 1974-1 394 Butte Normal size plants, growing on damp soil on the bottom of a small vernal pool, peter Ahart Ranch, about 1 1/2 mi. N and 2 mi. E of Honcut, about 12 mi S of Oroville. 46 Comment
  JEPS103611  Crassula tillaea Lowell Ahart 2002-4-10 9479 Butte Along the edge of the gravel roads, E of Parking Lot 10, Gray Lodge State Wildlife Management Area, ca 4 miles (air) SW of Gridley. 22 Comment
  CAS-BOT-BC427955  Crassula tillaea Lowell Ahart 1987-5-6 5521 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC82270  Crataegus S. Posner 1972-9-23 Butte Garden behind apartment complex at 725 Nord Ave., Chico. Comment
  HSC97072  Crypsis alopecuroides L. Ahart 2006-9-11 13302 Butte S edge of the N Fork of the Feather River, N side of Highway 70, about 1/8 miles W of the Poe Dam, about 3/4 mile NE of Pulga, about 21 miles (air) NE of Oroville 432 Comment
  CHSC72254  Crypsis schoenoides Lowell Ahart 1998-9-11 8061 Butte On the bottom of a vernal pool, about 3/4 mile northwest of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 396 Comment
  CAS-BOT-BC182418  Cryptantha John Thomas Howell; H. Keith Wagnon 1980-5-26 53576 Butte Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge Comment
  UC1594718  Cryptantha affinis Lowell Ahart 1992-7-29 6871 Butte about 0.75 mi nw Lotts Lake (about 1 mi ne of Carr Mine) 1798 Comment
  SEINET10497259  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4724 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
  CHSC94054  Cryptantha flaccida R. D. Fischer 2005-4-9 728 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant growing in the deeper soil of the roadside drainage. 518 Comment
  SEINET10497276  Cryptantha flaccida Lowell Ahart, Peter Ahart 1984-5-28 Ahart 4649 Butte On a large road cutbank along Hwy 40, now called Dark Canyon Rd, ca. 2 mi E of Old Yankee Hill, ca. 16 mi NE of Oroville; Foothill Woodland; 450 m. 450 Comment
  SEINET10497603  Cryptantha hendersonii Mary Susan Taylor 1980-4-18 Taylor 2528 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  SEINET12331819  Cryptantha intermedia Unknown 1985-1 4966 Butte W of Lunt Road, ca 0.5 mi N of intersection of Lunt Road and Hwy 70, N of Yankee Hill, N of Oroville 503 Comment
  SBBG54544  Cryptantha watsonii T. Lindskog 1967-6-10 Butte Craters of the Moon Comment
  POM183161  Cuscuta californica H. F. Copeland 1930-8-26 1326 Butte Jonesville, above hotel. 1677 Comment
  UC1191664  Cuscuta californica Herbert L. Mason and Verne Grant 1946-9-27 13132 Butte Graylodge Game Refuge Butte Sink Comment
  UC1562312  Cuscuta californica Vernon Oswald and Lowell Ahart 1990-7-19 4368 Butte ca 3 mi e Philbrook Reservoir (slope on the s side of Philbrook Creek, ca 0.5 mi w of the Plumas County line) 2026 Comment
  SBBG120020  Cuscuta campestris L. Ahart 2006-9-13 13313 Butte S edge of the N Fork of the Feather River, just W of Mill Crk, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 3/4 mi NE of Pulga, ca. 21 mi (air) NE of Oroville 431 Comment
  SEINET10496626  Cuscuta indecora Mary Susan Taylor 1980-9-12 Taylor 3331 Butte T24N R3E nw sec 21, Paradise quad. W side of Hwy 32, ca. 3 mi N of Forest Ranch, near Forest Ranch Fire Control Station; Yellow PIne Forest. 975 Comment
  UC478482  Cuscuta subinclusa E. B. Copeland 1931-7-17 675 Butte Jonesville 1650 Comment
  CHSC11876  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 390 Butte Jonesville. 1700 Comment
  CHSC28503  Cymopterus terebinthinus var. californicus M. S. Taylor; J. Jokerst 1979-7-21 2160 Butte On Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC3878  Cynoglossum grande Gerry Carrauthers 1966-3-7 51 Butte Honeyrun Rd. On hillside above old Honeyrun Bridge. Ca. 5 mi. N.W. of city of Paradise. Comment
  JEPS115300  Cynoglossum grande Lowell Ahart 2009-4-22 15570 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
  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
  JEPS113689  Cyperus bipartitus Lowell Ahart 2007-8-19 14485 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville 49 Comment
  CHSC41771  Cyperus difformis Lowell Ahart 1986-11-9 5446 Butte Pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS104238  Cyperus difformis Lowell Ahart 2003-6-23 10314 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  SEINET3450852  Cyperus difformis Unknown 2003-6-23 10314 Butte Oroville, Oroville, about 12 miles south, Peter Ahart Ranch, about 2 1/8 miles north of Honcut, about 300 yards east of Palermo Honcut highway 30 Comment
  UC1100546  Cyperus difformis Herbert L. Mason 1945-9-19 12737 Butte n.w. Pennington (Gray Lodge Game Refuge); Gray Lodge Game Refuge Comment
  JEPS94723  Cyperus eragrostis Lowell Ahart 1998-6-30 8009 Butte about 7 air mi n of Oroville (w of the ione oak tree, w of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  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
  UCD141029  Cyperus eragrostis L. Ahart 1969-9-24 34 Butte in and along edges of North Honcut Creek, Peter Ahart Ranch, ca. 3 mi. NE of Honcut. 45 Comment
  CAS-BOT-BC114382  Cyperus erythrorhizos Lowell Ahart 1974-11-9 s.n. Butte In a rice field, Peter Ahart Ranch, Honcut. 45 Comment
  CHSC111174  Cyperus erythrorhizos Lowell Ahart 2013-6-18 18807 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. 19 Comment
  CHSC97763  Cyperus erythrorhizos Lowell Ahart 2007-11-3 14555 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  UCD169398  Cyperus erythrorhizos L. P. Janeway 2001-6-13 7166 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CAS-BOT-BC114379  Cyperus erythrorhizos Lowell Ahart 1984-8-19 4789 Butte N of the state burrow area, W of Pacific Heights Road, ca. 5 mi SW of Oroville. 40 Comment
  CDA42942  Cyperus flavescens L. Ahart 2012-10-2 18503 Butte Soil and gravel bar on the south side of Big Chico Creek, about 100 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC43283  Cyperus flavescens Lowell Ahart 1987-8-30 5865 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
  SEINET7581945 Image available Cyperus flavescens Lowell Ahart 1987-1 5865 Butte Along the north fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC78732  Cyperus fuscus Lowell Ahart 2000-9-15 8688 Butte West of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA0060810  Cyperus iria Lowell A. Ahart 2012-10-5 18476 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  JEPS98379  Cyperus niger Lowell Ahart 2000-6-21 8500 Butte 3 1/3 air miles NE of Manzanita Avenue, Chico (S of Parking Area P, N of the Salmon Hole, Upper Bidwell Park) 106 Comment
  UCD150345  Cyperus odoratus William Anderson 1965-9-4 s.n. Butte Dry Creek-Paradise Rd. Comment
  JEPS64114  Cyperus squarrosus H. A. Dutton 1921-1 Butte Hooker Oak 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
  JEPS98272  Cyperus strigosus Lowell Ahart 2000-8-23 8661 Butte 4 air miles SW of Oroville (Oroville Wildlife Area, 1/2 mi W of Pacific Heights Road) 42 Comment
  CAS-BOT-BC68040  Cystopteris fragilis M. S. Taylor; J. D. Jokerst 1979-7-21 2148 Butte On Humboldt Peak, at Humboldt Summit 2154 Comment
  CHSC32694  Cystopteris fragilis M. S. Taylor 1981-3-24 3445 Butte S side of Hwy 70 near Poe Dam, ca. 1/2 mi e of Pulga. 487 Comment
  POM196539  Cystopteris fragilis H. F. Copeland 1929-6-11 1214 Butte Jonesville. 1524 Comment
  UC142471  Damasonium californicum Mrs. R. M. Austin May 1896 20 Butte Sacramento R. Comment
  CAS-BOT-BC189898  Danthonia californica Clarence R. Quick 1963-7-16 63 -42 Butte Sierra Nevada. Feather River Canyon. Section Corner Meadow, east of Pulga. 1463 Comment
  CAS-BOT-BC189900  Danthonia californica Clarence R. Quick 1965-7-25 65 -18 Butte Sierra Nevada. Section Corner Meadow. Coyote Gap - Four Trees road. Comment
  RSA774130  Danthonia californica var. americana L. Ahart 2010-9-21 17230 Butte North side of the poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  UCSB34189  Danthonia unispicata Reisentz, Paul 1979-5-13 Butte 4 mi E on Cherokee Rd from Hwy 70 Comment
  CHSC31890  Daucus pusillus L. Ahart 1977-5-8 1354 Butte Peter Ahart Ranch, Honcut. 50 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-BC121513  Delphinium gracilentum Mrs. H. C. Cantelow 1939-5-19 4251 Butte 8.4 miles W of Butte-Plumas Co. line Comment
  CAS-BOT-BC8567  Delphinium hansenii Herbert Faulkner Copeland 1920-5-1 s.n. Butte Jonesville 1219 Comment
  CAS-BOT-BC8568  Delphinium hansenii Lowell Ahart 1989-5-31 6328 Butte Along Truex Road, near lake Oroville, about 0.25 miles north-west of the West Branch Bridge across Lake Oroville 304 Comment
  CHSC10790  Delphinium nudicaule Lowell Ahart 1968-3-17 Butte Bidwell Park, Chico. 91 Comment
  CHSC56872  Delphinium nudicaule K. O'Connor-Henry 1985-3-8 3 Butte North Table Mtn., e of Cherokee Rd. and 3 mi. n of Oroville. 329 Comment
  CAS-BOT-BC8026  Delphinium nuttallianum E. B. Copeland 1930-6-25 416 Butte Jonesville 1550 Comment
  UC600481  Delphinium nuttallianum H. F. Copeland 1929-6-12 1211 Butte near north Willow Creek; Jonesville 1524 Comment
  CHSC3986  Delphinium patens subsp. patens Kathy Sommarstrom 1967-4-15 28 Butte Found 400 yds west of covered bridge, 50 yds from creek on south side. 76 Comment
  CHSC56778  Delphinium patens subsp. patens J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte South side of Olive Hwy 0.4 mi southwest of its junction with Forbestown Road; ca 6.0 air mi east of Oroville. Comment
  RSA400119  Delphinium uliginosum M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC52500  Delphinium variegatum Gary McHargue 1975-3-6 3 Butte Ca 75 yds s of Cohasset highway and 4 mi n of Chico municipal airaport, 8 mi ne of Chico. 152 Comment
  CHSC53295  Delphinium variegatum R. A. Emmrich 1975-4-20 81 Butte Cohasset Hwy ca. 10 yds e of roadside and 4 mi n of Chico. 60 Comment
  CHSC53303  Delphinium variegatum J. V. Serrao II 1971-5-2 153 Butte In meadows throughout ne side of lower Bidwell Rd, ca. 100 yds w of Horseshoe Lake, Bidwell Park. 121 Comment
  CAS-BOT-BC17021  Delphinium variegatum Mrs. J. H. Morrison 1932-4-19 s.n. Butte Durham Comment
  SEINET12094430  Delphinium variegatum J. D. Jokerst 1981-1 1307 Butte Ca 1/2-3/4 mi S of The Skyway along W side of Hwy 99 Comment
  CHSC77438  Delphinium variegatum subsp. variegatum Tim Stofer 1997-4-13 12 Butte At the shooting range 100 yards from the head of the South Rim Trail off South Park Dr. in Upper Bidwell Park. 76 Comment
  SEINET10448605  Dentaria pachystigma var. dissectifolia Mary Susan Taylor 1981-3-31 Taylor 3452 Butte T22N R4E nw sec 14 PUlga SW quad. SE side of spur rd, ca. 3/4 mi n of its jct with Ponderosa Way (Rim Rd), ca. 2 mi n of its jct with Hwy 70 at Jarbo Gap, ca. 17 air mi n of Oroville; 2700 ft. 823 Comment
  CHSC38806  Deschampsia danthonioides Vernon Oswald 1982-4-16 Butte Bidwell Park, Chico, ca. about 800 ft n of Upper Park Rd. on the e side of the intermittent stream which crosses Upper Park Rd. 2.9 mi e of its junction with Wildwood Ave. 134 Comment
  CHSC31446  Deschampsia elongata L. Ahart 1980-9-10 2639 Butte Along the edge of the road, ca. 5 mi e of Millsap Bar, ca. 30 mi ne of Oroville. 1200 Comment
  JEPS116079  Deschampsia elongata Lowell Ahart 2009-5-23 15737 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  UCR143556  Deschampsia elongata H. F. Copeland 1930-7-24 1343 Butte Jonesville 1524 Comment
  CHSC54003  Descurainia sophia Vernon H. Oswald 1991-4-8 4487 Butte Hwy 99, 0.3 mi south of Meridian Rd, north of Chico. On the east side of the road. 54 Comment
  JEPS113493  Dianthus armeria subsp. armeria Lowell Ahart 2007-7-2 14247 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville 680 Comment
  CHSC19643  Dicentra formosa Kingsley R. Stern 1966-4-14 Butte 15 mi. Comment
  CHSC3148  Dicentra formosa Gary Dutton 1966-4-23 225 Butte Found four miles north of Paradise on Rd. to Jones Village. Comment
  SEINET10904729  Dicentra formosa Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4710 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CDA36759  Dicentra pauciflora D. B. Joley 1969-7-5 269 Butte Ca. 0.2 miles south of Humbug Summit. Comment
  JEPS113210  Dichelostemma capitatum subsp. capitatum Lowell Ahart 2007-5-22 13905 Butte Around the southeast edge of a large bare granite opening (about an acre in size), northeast of Little Bald Rock, about 300 yards east of Bean Creek Road, about 16 miles (air) northeast of Oroville 1009 Comment
  JEPS113335  Dichelostemma capitatum subsp. capitatum L. P. Janeway and B. Castro 2006-5-7 8578 Butte Northern High Sierra Nevada. Top of west-facing serpentine out-cropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  RSA333553  Dichelostemma capitatum subsp. capitatum Craig Martz, Richard F. Sannar 1982-3-23 32 Butte South end of 18th Street, about 0.25 mile S of State Route 162 in Thermalito. 150 Comment
  CHSC45017  Dichelostemma congestum E. Ray Latham 1988-4-21 Butte Large population 100m e of e end Fremont st., Chico. 30 Comment
  SEINET223332  Dichelostemma multiflorum Barbara Ertter, Lowell Ahart; Jeff Strachan 1980-5-6 3271 Butte Peter Ahart Ranch ca 2.5 mi NNE of Honcut between Oroville and Marysville. 30 Comment
  CAS-BOT-BC501087  Dichelostemma multiflorum A. A. Heller 1914-4-13 11287 Butte Chico-Oroville Road 11 miles from Chico Comment
  UC143046  Dichelostemma multiflorum Mrs. R. M. Austin Apr 1896 37 Butte e of Chico Comment
  CHSC113803  Dichelostemma volubile M. Ocken 2011-4-8 Butte Big Chico Creek Ecological Reserve, off Hwy 32. 396 Comment
  CAS-BOT-BC503201  Dichelostemma volubile Carl B. Wolf 1937-5-13 8655 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi. E of Bangor 213 Comment
  CHSC29768  Dichondra donelliana M. S. Taylor 1980-5-24 2739 Butte Near Rocky Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET8205896  Diplacus angustatus A. A. Heller 1915-4-12 11806 Butte plentiful near Cohasset; in open places in the chaparrel, which here is mainly Quercus Oerstediana; near upepr limt of digger pine in the Sierra foothills. Comment
  CHSC3801  Diplacus grandiflorus R. L. Adams 1964-4-2 68 Butte Found: S. side of road, 1/4 mi. from 14 Mi. House on Hwy. 32, approx. 25 yrds. in canyon. About 12 mi. from Chico. Comment
  CHSC44749  Diplacus grandiflorus R. Banchero 1980-6-14 217 Butte Big Bald Rock, ca 2.5 mi E of the lower jct with Zink and Bald Rock Rd. 975 Comment
  SEINET8274767  Diplacus grandiflorus Unknown 1940-6-5 25672 Butte Route 24; 6 mi. up, along Feather River, above Oroville. 91 Comment
  CHSC34081  Diplacus kelloggii M. S. Taylor 1980-4-18 2501 Butte Ca. 1 mi s of Nimshew, ca. 1/4 mi e of Nimshew Rd. 609 Comment
  CHSC3826  Diplacus kelloggii R. L. Adams 1964-4-2 69 Butte Old road off Hwy. 32 1/4 mi. W 14 Mile House 40 yds. SE of junction. 12 mi. E. Chico. Comment
  CHSC44665  Diplacus kelloggii R. Banchero 1980-5-12 154 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  SJSU14138  Diplacus kelloggii D. J. Lane 1976-3-27 Butte Table Mt, Oregon City Rd 335 Comment
  CAS-BOT-BC153221  Diplacus kelloggii Jean L. Pawek 1956-5-21 53 Butte Alt. 40, Feather River 609 Comment
  CHSC44809  Diplacus torreyi R. Banchero 1980-6-6 200 Butte Along Bald Rock Rd 1.5 mi S of the upper jct with Hwy 162. 999 Comment
  CAS-BOT-BC154165  Diplacus tricolor Lowell Ahart 1983-6-6 4029 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut 50 Comment
  CHSC12732  Diplacus tricolor B. McIntire 1974-3-20 17 Butte Collected in meadow w of Horseshoe Lake in Upper Bidwell Park. Comment
  CHSC44358  Diplacus tricolor Lowell Ahart 1988-4-29 5969 Butte On the Joie Osgood Ranch, about 2 miles north and 2 1/2 miles east of Honcut, about 12 miles south-east of Oroville. 76 Comment
  CHSC91109  Diplacus tricolor Lowell Ahart 2005-5-28 11825 Butte Bottom of vernal pools, pasture, on the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 67 Comment
  CHSC97717  Dittrichia graveolens Lowell Ahart 2007-10-30 14510 Butte West side of Highway 99, about 100 yards north of Badger Creek Road, about 500 yards south of Richvale East Road, about 7 (air) miles west of Oroville. 34 Comment
  CAS-BOT-BC136233  Dodecatheon alpinum E. B. Copeland 1930-6-26 439 Butte Jonesville 1550 Comment
  CHSC108864  Dodecatheon clevelandii subsp. patulum Lowell Ahart 2012-3-2 17765 Butte Open flat area, on the west side of South Rim Trail, about 40 yards north of Bloody Pin Trail, about 2/4 mile west of Highway 32, about 7 1/2 miles northeast of Chico. 244 Comment
  JEPS14261  Dodecatheon hendersonii Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5613 Butte 6.0 mi s Oroville (along road from Oroville s to Bangor); s of Oroville 167 Comment
  CHSC31400  Downingia bicornuta Paula J. Minton 1980-4-21 2 Butte Ca. 11 mi n of Chico, ca. 25 ft w of Hwy 99 and 100 ft s of Broyles Rd. 64 Comment
  SD122581  Downingia bicornuta Lowell Ahart 1984-5-8 4599 Butte 2.5 miles north and 1.4 miles east of Honcut, ca. 12 miles south of Oroville. 39 Comment
  CHSC117463  Downingia bicornuta var. bicornuta B. Castro; Sabrina Bell 2016-5-25 2132 Butte Sacramento Valley. Ca 1.1 air mi E of Hwy 99 off northeastern edge of Thermalito Afterbay, 0.7mi S of Nelson Ave and 0.1 mi S of the Afterbay perimeter road, along sinuous edge of swale darining from the NE into 'McKibben's Pond. 42 Comment
  UC764508  Downingia bicornuta var. bicornuta R. F. Hoover 1936-5-20 1152 Butte 10 mi sw Oroville Comment
  CHSC103734  Downingia cuspidata Lowell Ahart 2010-5-16 16690 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  SEINET3450898  Downingia cuspidata Unknown 2003-5-28 10227 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, bottom of Hendricks ditch 270 Comment
  UC766390  Downingia cuspidata R. F. Hoover 1938-4-24 3251 Butte 3 mi e Richvale Comment
  UCD115560  Draba verna R. N. Bowman 1977-3-30 1352 Butte 0.1 mile southwest of Nimshew covered bridge on Humbug Road, ca. 6 miles southwest of Paradise. 228 Comment
  CHSC34537  Draba verna var. aestivalis R. E. Preston 1982-2-21 177 Butte N facing slope of small side branch of Hamlin Canyon. Ca. 10 mi ese of downtown Chico. 243 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
  CHSC686  Draperia systyla V. Holt 1935-5-24 Butte Butte Creek. 121 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
  RSA304016  Draperia systyla Jim R. Shevock 1972-5-19 1780 Butte Hwy 70, Feather River Canyon. 610 Comment
  UC567099  Draperia systyla C. G. Albertus 1933-7-26 54 Butte 0.5 mile south of Barnum Mills; Chico Quad. 1371 Comment
  RSA149053  Draperia systyla I. L. Wiggins, Dorothy Wiggins 1961-6-10 16314 Butte Near P. G. and E. Rock Creek Reservoir, Feather River Canyon. Comment
  CAS-BOT-BC401551  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  RSA0011691  Drosera rotundifolia L. Ahart 2006-7-25 13065 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CAS-BOT-BC401553  Drosera rotundifolia M. S. Taylor 1982-8-16 5004 Butte On n side of spur rd off 52513, 1 mi s of Jones Meadow, ca. 6 mi ne of Stirling City 1798 Comment
  RSA0011688  Drosera rotundifolia H. F. Copeland 594 Butte Jonesville. 1524 Comment
  UC859896  Drymocallis glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CAS-BOT-BC159642  Drymocallis glandulosa var. glandulosa John Thomas Howell 1962-6-15 37505 Butte Magalia 731 Comment
  CHSC116222  Drymocallis glandulosa var. glandulosa Lowell Ahart 2015-6-16 20238 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  UC1562388  Drymocallis glandulosa var. glandulosa Vernon Oswald and Lowell Ahart 1990-6-27 4332 Butte between Four Trees and Coyote Gap Rd 23N31 nw Four Trees Rd.; between Four Trees and Coyote Gap 1463 Comment
  POM34663  Drymocallis glandulosa var. glandulosa C. C. Bruce 1898-05 2436 Butte Butte Creek. Comment
  UC600380  Drymocallis lactea var. austiniae E. B. Copeland 1930-7-12 Butte above Jonesville (head of Butte Creek area); , above Jonesville 1900 Comment
  CAS-BOT-BC70857  Dryopteris arguta Lowell Ahart 1980-9-10 2632 Butte 1 mile northeast of Milsap Bar 900 Comment
  CHSC101827  Dryopteris arguta Lowell Ahart 2009-5-23 15763 Butte Below the rim, south of a small drainage, about 40 yards west of Guardians Trail, about 100 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 381 Comment
  CHSC42954  Dryopteris arguta Lowell Ahart 1987-7-3 5751 Butte Along the edge of Power House Road, about 1 mile north-west of the Poe Power House, about 1 mile south-east of Jarbo Gap. 487 Comment
  CHSC70826  Dryopteris arguta Vernon Oswald 1998-4-12 8904 Butte Upper Bidwell Park (new addition), Pine Trail between the trailhead on Hwy. 32 opposite Santos Rd. (between Chico and Forest Ranch) and South Rim Trail. 396 Comment
  HSC23372  Dryopteris arguta Larry D. Scott 1971-4-17 27 Butte 4 mi. NE of Covered Bridge on the N side of Honey Run Rd. Comment
  CHSC115419  Duchesnea indica Kate Ronan 2013-5-9 Butte City of Chico, Bidwell Mansion State Park. Found in cultivated lawn area behind Bidwell Mansion on Sol-Wil-Le-No Ave. 60 Comment
  CHSC42190  Dudleya cymosa A. L. Quesada 1986-4-19 2 Butte Small population 3.3 mls from jct of Stilson Cyn on Humboldt Rd n of Chico. 152 Comment
  CAS-BOT-BC428073  Dudleya cymosa subsp. cymosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CHSC21254  Dysphania ambrosioides M. S. Taylor 1975-10-3 933 Butte Ca. 1/4 mi n of the washout, between River Rd and the Sacramento River, ca. 10 mi w of Chico. 36 Comment
  CHSC113163  Dysphania botrys Lowell Ahart 2013-11-13 19232 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
  CHSC38311  Dysphania botrys Vernon Oswald 1983-6-18 706 Butte Upper Bidwell Park, Chico, in Lindo Channel at the diversion weir. 79 Comment
  CHSC40903  Dysphania botrys Lowell Ahart 1985-11-7 5237 Butte About 80 feet below the high water line of Lake Oroville, on a silt bar along the South Fork of the Feather River, about 400 yards north-west of the Ponderosa Dam. 277 Comment
  CHSC79989  Dysphania botrys L. P. Janeway; B. Castro 1999-6-4 6450 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge over the Sacramento River. 30 Comment
  RSA0118933  Dysphania botrys Lowell Ahart 2013-11-13 19232 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
  CHSC113194  Dysphania pumilio Lowell Ahart 2013-11-29 19292 Butte Below the high water line of Lake Oroville, about 250 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 225 Comment
  CHSC76276  Dysphania pumilio Lowell Ahart 1999-9-21 8279 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SD8071  Dysphania pumilio Daniel Cleveland 1882-6-7 Butte Comment
  CHSC110400  Echinochloa colona Lowell Ahart 2012-9-28 18460 Butte Just east of the east end of Sycamore Pool in Big Chico Creek, Lower Bidwell Park, Chico. 62 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
  CAS-BOT-BC197100  Echinochloa crus-galli Lowell Ahart 1984-9-17 4791 a Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 50 Comment
  CHSC76020  Echinochloa crus-galli Lowell Ahart; Vernon H. Oswald 1999-8-13 8149 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
  JEPS114996  Echinochloa crus-galli Lowell Ahart 2007-11-3 14558 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  SEINET10831129  Echinochloa crus-galli Lowell Ahart 1977-8-14 Ahart 1554 Butte On damp soil in a small slough. Peter Ahart Ranch, Honcut. Valley Grassland, 50 Comment
  CAS-BOT-BC197250  Echinochloa muricata A. A. Heller 1914-5-19 11418 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC208575  Echinochloa oryzoides Forman T. McLean 1921-9-25 20 Butte Nelson Comment
  RSA733899  Echinochloa oryzoides Ellen Dean, J. Ditomaso, E. Healy 2001-8-20 853 Butte Biggs UC Field Station. North of town of Biggs, W of jct of hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy., Along second north-south running dirt road leading N into rice fields, at intersection with first east-west running dirt road, corner of rice field. In rice fields on W side of the road. 30 Comment
  UC1100139  Echinodorus berteroi Herbert L. Mason and Verne Grant 1946-9-4 13107 Butte 833 Canal, W. Gridley Rd. Comment
  SEINET10465417  Echinodorus berteroi Mary Susan Taylor 1977-8-16 Taylor 1451 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC112606  Elatine ambigua Lowell Ahart 2013-9-20 19061 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
  CHSC113455  Elatine ambigua Lowell Ahart 2014-8-8 19697 Butte Open edge of a rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. 33 Comment
  CHSC42128  Elatine ambigua Lowell Ahart 1978-5-12 1716 Butte Peter Ahart Ranch, about 2-1/4 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 45 Comment
  JEPS122236  Elatine ambigua Lowell Ahart 2014-9-28 19881 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut. Comment
  UCD150364  Elatine ambigua William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd., rice field. Comment
  CHSC65778  Elatine heterandra Vernon H. Oswald 1996-4-10 7354 Butte Sacramento National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. 33 Comment
  CHSC84023  Elatine rubella Lowell Ahart 2003-6-19 10292 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
  JEPS113683  Eleocharis acicularis Lowell Ahart 2007-7-27 14394 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  SEINET13709911  Eleocharis acicularis var. acicularis Lowell William Ahart, Lowell William Ahart 2000-1 8691 Butte Pond on E Side of Sacramento River, NW of Parrott Landing, 12 Mi SW of Chico Comment
  CHSC44243  Eleocharis bella V. Oswald; L. Ahart 1988-7-13 3586 Butte Road to High Lakes e of Philbrook Reservoir. Along a streamlet in a meadow on the n side of Philbrook Creek s of the road. 1828 Comment
  CHSC55612  Eleocharis bella L. P. Janeway 1987-6-19 2251 Butte Meadow on Pinkard Creek, between Lewis Ridge and Mooreville Ridge; 6.5 mi from the Challenge-LaPorte Road and Travis Saddle via the road to Golden Trout Crossing. 1082 Comment
  UC1562357  Eleocharis bella Lowell Ahart and Vern Oswald 1990-7-5 6650 b Butte 2 mi NE of Snag Lake (small meadow 1/2 mi N of Butte Creeek house) 1828 Comment
  CAS-BOT-BC113456  Eleocharis bella Lowell Ahart 1980-7-29 2510 Butte Along Lower Forbestown Road. 750 Comment
  JEPS106370  Eleocharis decumbens Lowell Ahart 2004-8-2 11330 Butte Small bog in a large meadow, about 200 yards east of Keyser Creek, on the north side of the dirt County Road, about 3/4 mile (air) northeast of Oak Point, about 1/2 mile (air) west of Big Kimshew Creek, about 1 3/4 miles southeast of Bald Mountain 1452 Comment
  JEPS98441  Eleocharis engelmannii Lowell Ahart 2000-5-27 8406 Butte 7 air miles N of Oroville (North Table Mounain, W side of Cherokee Road, S margin of boggy area in a large spring-like area, W of the cow chute, W of the lone oak tree) 403 Comment
  SEINET7585972 Image available Eleocharis engelmannii Lowell Ahart 2003-6-23 10302 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 30 Comment
  UC143747  Eleocharis macrostachya E. B. Copeland 1903-5-12 3182 Butte Chico Pacific Coast Comment
  SEINET10905703  Eleocharis macrostachya Mary Susan Taylor 1980-5-31 Taylor 2774 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
  SEINET11268264  Eleocharis macrostachya Lowell Ahart 2000-5-18 8369 Butte On the bottom of the Clay Pit, about 1/8 mile west of the Oroville Airport and Larkin Road, about 4 1/2 miles (air) southwest of Oroville.; 0 37 Comment
  CHSC78196  Eleocharis pachycarpa Lowell Ahart 2000-5-24 8289 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 39 Comment
  JEPS98591  Eleocharis pachycarpa Lowell Ahart 2000-5-23 8387 Butte 13 mi SE of Oroville (NE of the pond, 1/8 mi N of La Porte Road, 1/2 mi SE of Honcut Cemetery, 4 mi NE of Honcut) 54 Comment
  SEINET3441884  Eleocharis palustris Unknown 2000-7-7 8556 Butte Feather Falls, Feather Falls, about 5 air miles northeast, about 3 miles north of Lumpkin Ridge Road, small seep just west of the bridge across Fall River on the north side of Fall River 1030 Comment
  UC143762  Eleocharis parishii Copeland 1903-5-30 3280 Butte Chico Comment
  CHSC44294  Eleocharis quadrangulata V. Oswald 1988-6-8 3361 Butte Southeast end of the large pond in the Oroville Wildlife Area on the west side of the Feather River at about the level of Walnut Ave. 32 Comment
  JEPS98350  Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte 5 air miles E of Magalia (by the road culvert, NW side of Concow Road at Flea Meadow, about 1/2 mi W of Flea Mountain, 3 1/2 air miles N of Concow Reservoir) 1036 Comment
  SEINET7587005 Image available Eleocharis quinqueflora Lowell Ahart 2000-7-5 8553 Butte West of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 404 Comment
  SEINET7587007 Image available Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte On the northwest 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
  SEINET7587010 Image available Eleocharis quinqueflora Lowell Ahart 2000-5-28 8408 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 37 Comment
  JEPS98722  Eleocharis rostellata Lowell Ahart 2000-6-21 8501 Butte In a large seep, on the west side of the dirt road at Parking Area L, just west of the Diversion Dam, Upper Bidwell Park, about 2 1/2 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC80887  Elodea canadensis Lowell Ahart 2001-7-6 8883 Butte Small pond, west of a large pond, large overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ord bend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC33137  Elymus caput-medusae J. D. Jokerst 1980-5-28 801 Butte Top of North Table Mt, S of Cherokee Rd. 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
  CHSC9342  Elymus macounii Marilyn Lee 1968-5-3 154 Butte South side of Coutolene Rd., ca. 1 mile N. of Magalia. Comment
  JEPS119567  Enemion occidentale Lowell Ahart 2012-2-22 17746 Butte On the east bank of South Rim Trail, about 1/4 mile southwest of the pond, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CHSC70331  Epilobium anagallidifolium R. A. Schlising 1983-8-27 4453 Butte N part of county; Coon Hollow Creek, NW of Philbrook Reservoir. Meadow along creek. 1706 Comment
  SEINET6631140 Image available Epilobium angustifolium subsp. circumvagum E. B. Copeland 1930-1 428 Butte Jonesville 1600 Comment
  CHSC66164  Epilobium campestre Vernon H. Oswald; Lowell Ahart 1996-5-27 7653 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a marsh on the S end of Tract 2, Sanctuary II. 33 Comment
  UC873163  Epilobium campestre A. A. Heller 1914-5-13 11395 Butte between Durhan and Nelson; Butte Creek 53 Comment
  CHSC13471  Epilobium canum subsp. latifolium J. R. Birmingham 1972-4-5 7 Butte Against cliff, ca. 1000 yds. se of Municipal Golf Building, Chico. 182 Comment
  SEINET10453051  Epilobium canum subsp. latifolium Mary Susan Taylor 1980-9-27 Taylor 3344 Butte T23N R5E center sec 11, Pulga quad. S side of Hwy 70, at Butte-Plumas county line; exposed slab granite. 549 Comment
  CHSC107565  Epilobium ciliatum subsp. ciliatum Lowell Ahart 2011-8-17 17621 Butte On the east side of Big Chico Creek, southwest of the meadow, about 30 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS39217  Epilobium ciliatum subsp. ciliatum H. A. Dutton 1921-1 Butte Hooker Oak Chico Comment
  JEPS88582  Epilobium ciliatum subsp. ciliatum Vernon H. Oswald and Lowell Ahart 1996-7-22 8078 Butte US Fish & Wildlife Service parcel betw 7 Mile Lane and Sacramento R. (edge of farm rd. crossing branch of Angel Slough w of Refuge HQ's at s.e. corner of Tract 1, Sanctuary 1); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC28718  Epilobium cleistogamum R. A. Schlising 1979-8-17 3470 Butte Richvale vernal pools, 1/4 mile S of jct Hwy162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. In vernal pool. Comment
  CHSC102993  Epilobium densiflorum Lowell Ahart 2009-6-30 15962 Butte West of Guardian Rock Trail, about 5/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. Comment
  CHSC43149  Epilobium densiflorum R. Banchero; R. Schlising, M. Merryman 1979-10-7 48 Butte 7.7 mi S from intersection of Ord Ferry Road and Dayton Road, south of Chico; along canal. Comment
  POM184022  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-8-17 s.n. Butte Jonesville; in woods along Butte Creek 457 Comment
  POM214025  Epilobium hallianum H. F. Copeland 1935-7-25 s.n. Butte Jonesville. 1500 Comment
  CHSC58932  Epilobium hornemannii subsp. hornemannii Lowell Ahart 1992-7-26 6854 Butte In a small stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1798 Comment
  UC600550  Epilobium lactiflorum H. F. Copeland 1932-8-19 Butte springs near crest of ridge S.E. of head of Butte Creek; Jonesville 2000 Comment
  CHSC38573  Epilobium minutum Vernon Oswald 1983-5-7 439 Butte Upper Bidwell Park, Chico, on the north rim 50 ft e of the turn-around at the end of the jeep trail. 426 Comment
  CHSC42750  Equisetum arvense Lowell Ahart 1987-8-3 5847 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA4627  Equisetum arvense E. B. Copeland 1930-6-28 402 Butte Jonesville. 1500 Comment
  SBBG17368  Equisetum arvense M. Vincent 1962-4-15 180 Butte 1 mi S of Stirling City on Skyway near small stream Comment
  JEPS124341  Equisetum hyemale subsp. affine Lowell Ahart 2015-10-16 20552 Butte About half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. Comment
  CAS-BOT-BC57253  Equisetum laevigatum Lowell Ahart 1981-4-9 2752 Butte Peter Ahart Ranch, Honcut, edge of North Honcut Creek 50 Comment
  SEINET4568214  Eragrostis chloromelas R. McKee 1907-8-18 13903 Butte Chico Comment
  SD122514  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, circa 1.5 miles North and 1.7 miles East of Honcut, circa 12 miles South of Oroville. 49 Comment
  UCD62963  Eragrostis cilianensis A. A. Heller 1914-6-2 11478 Butte 8 miles north of Oroville. 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
  RSA0106524  Eragrostis hypnoides Lowell Ahart 2014-9-23 19876 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 89 Comment
  UCD63884  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 34675 Butte Sierra Nevada, lower foothills, eastern outskirts of Oroville. 60 Comment
  SEINET10831621  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 Howell 34675 Butte Lower foothills, eastern outskirts of Oroville. 61 Comment
  CHSC100523  Eragrostis pectinacea var. pectinacea Lowell Ahart 2008-11-4 15405 Butte On the east edge of the paved road, about 100 yards south of the entrance to the large parking area on the north end of Oroville Dam, about 4 miles (air) northeast of Oroville. 273 Comment
  CHSC75985  Eragrostis pectinacea var. pectinacea Lowell Ahart; Vernon H. Oswald 1999-8-13 8152 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
  CHSC97418  Eragrostis pectinacea var. pectinacea Robert Fischer 2006-6-18 1022 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  RSA755372  Eragrostis pectinacea var. pectinacea L. Ahart 2009-8-13 16278 Butte In the channel, about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico. 69 Comment
  UC1562287  Eragrostis pilosa var. pilosa Lowell Ahart 1990-8-15 6585 Butte about 1/2 mi sw Enterprise Bridge across Lake Oroville (across Lake Oroville, along McCabe Creek); below high water line Lake Oroville 228 Comment
  UC1562293  Eragrostis pilosa var. pilosa Lowell Ahart 1990-7-15 6558 Butte about 0.25 mi nw Enterprise Bridge across Lake Oroville (e of the Enterprise Boat Launch Area); Lake Oroville 243 Comment
  JEPS115255  Eremocarpus setiger Lowell Ahart 2009-6-30 15956 Butte West of the Guardian Rock Trail, about 120 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  CHSC30045  Eremogone cliftonii Joan P. Warner 1977-4-22 1 Butte Ca. 2 km sw of intersection of North Fork Feather River and Butte-Plumas county line, ca. 23 km nw of Paradise, ca. 80 m s of river. 490 Comment
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Jul 8 2014
  CHSC30859  Eremogone cliftonii L. Ahart 1980-9-10 2636 Butte Along the edge of the road, ca. 3 mi ne of Millsap Bar, ca. 27 mi ne of Oroville. 1100 Comment
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Jul 8 2014
  CHSC92524  Eremogone cliftonii Samantha Mackey Hillaire; Matt Brown 2005-6-10 1217 Butte South of Middle Fork Feather River. Generally on the east side of the canyon, along road 22N62. UTM 10 S 650439, 4397298. 950 Comment
  CAS-BOT-BC168360  Eremogone ferrisiae Lowell Ahart 1983-7-29 4246 Butte 2 miles east of Milsap Bar, ca. 25 miles northeast of Oroville - Sutter Buttes Region 900 Comment
  CHSC59504  Ericameria arborescens Lowell Ahart 1992-9-20 6924 Butte At the end of the Enterprise Boat Launch Ramp, about 3/4 mile south of Rocky Point. 259 Comment
  CDA43083  Erigeron canadensis L. P. Janeway 2011-10-2 10782 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
  CHSC37074  Erigeron canadensis L. Ahart 1982-10-6 3848 Butte North Honcut Creek, Peter Ahart Ranch, ca. 3 mi ne of Honcut. 50 Comment
  CAS-BOT-BC295169  Erigeron inornatus John Thomas Howell 1962-6-15 37507 Butte Magalia 731 Comment
  RSA699540  Erigeron inornatus var. inornatus R. D. Fischer 2004-6-12 162 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Rocky canyon edge of Humboldt Trail N of Bloody Pin Trail junction 412 Comment
  CHSC31591  Erigeron philadelphicus L. Ahart 1977-5-20 1384 Butte Along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SBBG119820  Eriochloa acuminata L. Ahart 2004-9-14 11400 Butte E side of Palermo Honcut Hwy, ca. 20 ft S of Palermo Rd, E part of Palermo 57 Comment
  CAS-BOT-BC216044  Eriodictyon californicum Lowell Ahart 1987-5-11 5612 Butte South of the Forbestown Ditch about 2 1/2 miles north-east of Forbestown 868 Comment
  JEPS26744  Eriodictyon californicum P. C. Hutchison 1961-6-9 2096 Butte Canyon of the North Fork of the Feather River along highway US Alt. 40, 1 mi s (above) Pulga Bridge; canyon of North Fork of the Feather River Comment
  SEINET10479808  Eriogonum latifolium subsp. nudum Mary Susan Taylor 1975-6-30 Taylor 814 Butte Ca. 300 yds W of Cohasset Hwy, Cohasset, ca. 18 mi NE of Chico; Yellow Pine Forest. 853 Comment
  RSA0005066  Eriogonum marifolium var. apertum E. B. Copeland 1930-7-12 s.n. Butte Above Jonesville 610 Comment
  CDA13258  Eriogonum nudum var. deductum G. F. Hrusa, T. D. Wilfred 1996-7-9 13109 Butte Plumas National Forest; Nr. headwaters of Jordan Creek, S of Hwy 162 from Roger's Cow Camp. Comment
  LA206890  Eriogonum nudum var. pubiflorum E. B. Copeland; 1930-7-16 sn Butte Jonesville 1500.0 Comment
  UC725365  Eriogonum nudum var. pubiflorum A. A. Heller 1940-9-28 15839 Butte w Pentz (roadside bank) Comment
  CAS-BOT-BC367999  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC45488  Eriogonum roseum Lowell Ahart 1974-9-30 640 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC51009  Eriogonum roseum Lowell Ahart 1990-8-15 6591 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
  CHSC11922  Eriogonum spergulinum var. reddingianum E. B. Copeland 1931-7-11 633 Butte Jonesville. Ridge between Jones and North Willow Creeks. 1700 Comment
  SEINET11934607  Eriogonum spergulinum var. reddingianum L. P. Janeway, Janeway, C. A. 1986-1 1857 Butte Jonesville quad (15'), near mdw of upper Willow creek. Logging landing of soft soil 1951 Comment
  CHSC41367  Eriogonum umbellatum var. ahartii R. A. Schlising; K. Tarp 1983-7-28 4354 Butte NE part of county, SW of Coyote Gap and S of Big Bar Mt. 868 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
  SEINET11924843  Eriogonum umbellatum var. speciosum Unknown 1981-1 2929 Butte along the edge of dirt road 1/2 mi W of the Forbestown Reservoir, NE of Forbestown 701 Comment
  LA207080  Eriogonum ursinum E. B. Copeland; 1930-7-6 sn Butte Jonesville 624 Comment
  JEPS115266  Eriogonum vimineum Lowell Ahart, John Dittes, Josephine Guardino 2008-11-8 15440 Butte On the bottom of Lindo Channel, about 100 yards west of the diversion structure, north of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  SBBG1660  Eriogonum vimineum H. and M. Dearing 1938-6-21 2044 Butte 15 mi N of Chico Comment
  CHSC7118  Erodium moschatum J. Borgstrom 1969-4-23 8 Butte Abundant ca. 4 mi sw of Chico on Dayton Rd, 4 ft. on s side of road. 60 Comment
  JEPS17429  Eryngium aristulatum var. aristulatum W. L. Jepson 1934-5-4 16608 Butte 1 1/2 mi. s. Nord (near Sacramento R., swales of Pine Creek) Comment
  POM312408  Eryngium articulatum Verne Grant, Herbert L. Mason 1946-9-4 13103 Butte Colusa Gun Club Comment
  SEINET12118292  Eryngium vaseyi var. castrense Unknown 1936-1 13044 Butte along Mud Creek, near Chico Comment
  CAS-BOT-BC40747  Erysimum capitatum A. A. Heller 1915-4-12 11811 Butte Near Cohasset. Comment
  CHSC25463  Erysimum capitatum var. capitatum Hayes; Warner 1977-7-11 96 Butte Near Humboldt Summit (near Butte-Tehama county line), ca. 200 m down Pacific Crest Trail from the summit towards Humboldt Peak. 2011 Comment
  CHSC44768  Erythranthe bicolor R. Banchero 1980-6-17 245 Butte Along the Skyway 1.1 mi Ne of its jct with Coutolenc Rd, 2.4 mi W of Stirling City. 865 Comment
  SJSU5830  Erythranthe floribunda D. C. Polen 1971-4-8 Butte by Skyway c. 10 mi E of Chico 228 Comment
  CHSC38700  Erythranthe glaucescens Vernon Oswald 1983-3-9 138 Butte Upper Bidwell Park, Chico, on the north clope ca. 600 ft w of the power lines abd 1600 ft n of the Upper Park Rd. 152 Comment
  CHSC44820  Erythranthe glaucescens R. Banchero 1980-6-2 183 Butte Along Humbolt Rd 0.6 mi NE of its jct with Hwy 32, 3.8 mi SW of the Butte Meadow Fire Station. 1219 Comment
  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
  SD4665  Erythranthe moschata E. B. Copeland 1929-7-13 463 Butte Jonesville, in half shady glades 1550 Comment
  CHSC20116  Erythranthe nasuta M. S. Taylor 1975-4-26 535 Butte Se corner of Kunkle Reservoir, ca. 1/4 mi e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. 609 Comment
  CHSC44687  Erythranthe nasuta R. Banchero 1980-4-13 108 Butte Doe Mill Ridge, ca 2.0 mi SW of the Covered Bridge. 213 Comment
  CHSC11894  Erythranthe primuloides E. B. Copeland 1930-7-15 460 A Butte Jonesville. 1500 Comment
  CHSC23444  Erythranthe primuloides K. R. Stern 1974-6-30 5778 Butte Bank of Jones Creek, at Jonesville. Comment
  CHSC41292  Erythranthe primuloides S. C. Morey 1983-7-21 503 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET10469658  Erythronium cliftonii Mary Susan Taylor 1981-4-8 Taylor 3504 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CDA14073  Erythronium multiscapideum G. F. Hrusa, T. D. Wilfred 1997-5-1 13720 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Comment
  CHSC2477  Erythronium multiscapideum W. Fitzwater 1958-4-19 Butte Chico canyon, Chico area. 365 Comment
  CHSC32643  Erythronium multiscapideum M. S. Taylor 1981-4-2 3473 Butte 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. Comment
  CHSC32742  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-10 3526 Butte S side of Private rd, ca. 1/8 mi e of its jct with Ponderosa Way (Rim Rd), ca. 4 mi n of Jarbo Gap on Hwy 70, ca. 19 air mi n of Oroville. 914 Comment
  CAS-BOT-BC504538  Erythronium multiscapideum M. S. Taylor 1981-4-21 3551 Butte W side and downslope from spur rd (to Old Utah Mine) off Ponderosa Way (Jordan Hill Rd) ca. 1 air mi ne of Magalia 853 Comment
  UC398692  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte Salmon Hole Chico Creek (e of Chico) Comment
  SEINET10937887  Eschscholzia californica Mary Susan Taylor 1982-5-2 Taylor 4388 Butte T23N R5E ne/ne sec 6. Pulga Sw quad. Pulga serpentine outcrops on both sides of bridge across Hwy 70 at Pulga, ca. 20 mi ne of Oroville. 1600 ft. 488 Comment
  CHSC10656  Eschscholzia lobbii Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC1195  Eschscholzia lobbii R. Carter 1964-3-23 61 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 1/2 mi. E of Rd. along rim of table. 60 Comment
  RSA32930  Eschscholzia lobbii A. A. Heller 1938-4-14 15027 Butte Summit of Table Mtn. 305 Comment
  POM223073  Euphorbia crenulata H. F. Copeland 1923-4-21 626 Butte Chico Canyon. Comment
  UCD35608  Euphorbia hooveri Beecher Crampton 1958-8-12 5070 Butte 10 miles southeast of Chico. Comment
  SEINET10906849  Euphorbia maculata Lowell Ahart 1984-8-19 Ahart 4786 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  RSA572326  Euphorbia ocellata var. ocellata Robert F. Hoover 1938-8-2 3716 Butte 13 miles southeast of Chico. Comment
  SEINET10453782  Euphorbia serpillifolia Lowell Ahart 1990-10-21 Ahart 6637 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. Foothill Woodland (destroyed). T21N R4E NWS5. 213 Comment
  SEINET10873986  Euphorbia serpillifolia Lowell Ahart 1985-10-12 Ahart 5200 Butte At the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. Comment
  CHSC96930  Euphorbia spathulata Lowell Ahart 2007-6-3 13974 Butte On the east side of the bridge across Concow Creek, east side of Jordan Hill Road, about 1 1/2 miles (air) southwest of Concow Reservoir. 415 Comment
  CAS-BOT-BC413861  Fallopia convolvulus Lowell Ahart 1983-8-10 4269 Butte Along La Porte Road, about 4 miles north-east of Bangor 350 Comment
  JEPS117268  Festuca arundinacea Lowell Ahart 2010-5-14 16640 Butte Along a trail in the Disc Golf Area, about 130 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 398 Comment
  CHSC49548  Festuca occidentalis Vernon Oswald 1983-6-22 730 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC41308  Festuca subulata S. C. Morey 1983-7-22 544 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC52181  Ficus carica Pauleen Broyles 1987-5-21 1049 Butte Along the banks of Pine Creek. Comment
  SEINET10474662  Filago californica Mary Susan Taylor 1980-5-27 Taylor 2661 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  CHSC68451  Fimbristylis autumnalis L. P. Janeway 1986-9-20 1878 Butte At edge of gravel bar along east side of Sacramento River; just southeast of the Ord Fery Road bridge. 28 Comment
  JEPS88545  Foeniculum vulgare Vernon H. Oswald and Lowell Ahart 1996-7-22 8076 Butte U.S. Fish & Wildlife Service parcel betw. 7 Mile Lane and Sacramento R. (edge of levee rd. along n. side of Tract 6 - Sanctuary 1); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 33 Comment
  CDA14053  Fragaria vesca G. F. Hrusa, T. D. Wilfred 1997-5-1 13700 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries enter from east. Comment
  CAS-BOT-BC62911  Frangula californica subsp. tomentella A. A. Heller; H. E. Brown 1902-5-6 5468 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC33277  Frangula purshiana R. A. Schlising 1981-6-28 4118 Butte NE part of county, E of Stirling City and W of Little Kimshew Creek on E side andesitic Table Mt. 1767 Comment
  CAS-BOT-BC223386  Fraxinus dipetala A. A. Heller 1915-4-12 11815 Butte Hills 14 miles northeast of Chico near Rock Creek Comment
  CHSC29098  Fraxinus dipetala M. S. Taylor; J. D. Jokerst 1980-4-18 2522 Butte On dry bluff, on e side side of Humbug Rd, ca. 5 mi s of Nimshew. 518 Comment
  CHSC20124  Fraxinus latifolia M. S. Taylor 1975-5-6 556 Butte Along s edge of Big Chico Creek, ca. 50 ft e of Little Cafeteria, California State University, Chico. 60 Comment
  JEPS120066  Fraxinus profunda Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC504378  Fritillaria Saichi Kawaha 1968-5-4 388 Butte James Ripley's property, graham Road, Paradise 640 Comment
  SDSU19716  Fritillaria eastwoodiae Sean Ryan 2010-4-17 33 Butte North of Magalia on shady NE facing roadcut on west side of Jordan Hill Road, approximately 1.1 miles from its intersection with Coutolenc Road. 543 Comment
  SEINET10469566  Fritillaria micrantha Lowell Ahart 1983-4-14 Ahart 3933 Butte Ca. 3/8 mi sw of the Forbestown Reserv., ca. 4 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  NY319697  Fritillaria phaeanthera L. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CHSC28974  Fritillaria pluriflora J. D. Jokerst 1980-3-12 468 Butte Ca 1.0 mi E of Chico Muni Airport, 600 m E of Cohasset Hwy where it makes a 45 degree turn to the NW. 67 Comment
  UC143417  Fritillaria pluriflora H. E. Brown Mar 3 1897-Mar 22 1897 141 Butte near Clear Creek 53 Comment
  UC1609061  Galium aparine Lowell Ahart 1993-6-20 6988 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  CDA13230  Galium bolanderi G. F. Hrusa, T. D. Wilfred 1996-7-8 13077 Butte Plumas National Forest; Old Railroad Grade Rd. immed. above Paradise Lake dam, approx. 3 mi. N of Magalia. Comment
  CHSC65586  Galium bolanderi L. P. Janeway 1995-6-1 4770 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi east-northeast of the falls of Feather Falls. 1054 Comment
  HSC97151  Galium bolanderi L. Ahart 2006-6-9 12661 Butte E side of Bardees Bar Rd. 1/8 mile W of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) SW of Pulga 386 Comment
  JEPS52655  Galium bolanderi Lauramay T. Dempster 1964-7-24 4045 Butte roadbank 3 mi s Nimshew 487 Comment
  RSA726312  Galium bolanderi L. Ahart, Lawrence Janeway 2007-7-10 14284 Butte On the N side of Forest Road 21N31Y. About 6/10 mile W of Bald Rock Road. About 17 miles (air) NE of Oroville. 1033 Comment
  RSA325160  Galium bolanderi M. S. Taylor 1981-5-5 3611 Butte W side of spur rd. Ca 1.5 air miles NW of its jct with Bryant Ravine Rd (21N35Y). Ca 1 air miles N of Feather Falls community. 793 Comment
  SEINET10836823  Galium bolanderi Mary Susan Taylor 1981-5-29 Taylor 3815 Butte T22N R5E ne sec 22, Pulga SW quad. Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. Comment
  CHSC46406  Galium divaricatum Lowell Ahart 1989-5-28 6296 Butte About 1/2 mi north of the Cemetery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 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
  SEINET12515235  Galium parisiense Lowell Ahart, John Dittes and Josephine Guardino 2002-6-21 9748 Butte South side of a poor dirt road, Watson Ridge, about 2 (air) miles northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). 1095 Comment
  CHSC39240  Galium porrigens var. tenue M. S. Taylor; K. Tharp 1983-3-12 5233 Butte Off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi SSE of Chico. 152 Comment
  CHSC108848  Garrya fremontii Lowell Ahart 2012-3-2 17759 Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 422 Comment
  RSA795641  Garrya fremontii L. Ahart 2012-3-2 17759 -A Butte About 200 yards north of Ten Mile House Road, about 200 yards west of Highway 32, about 9 miles northeast of Chico. 423 Comment
  CHSC25489  Gastridium phleoides L. Ahart 1977-5-21 1390 Butte On the bottom of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42374  Gastridium phleoides Lowell Ahart 1987-5-27 5701 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
  JEPS110208  Gayophytum heterozygum Lowell Ahart 2006-7-16 13004 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
  RSA774144  Gayophytum heterozygum L. Ahart 2010-9-21 17215 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir. 1918 Comment
  JEPS108772  Gayophytum racemosum Lowell Ahart 2006-7-16 13005 Butte On the west side of the poor dirt road, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1524 Comment
  CHSC103656  Genista monspessulana Lowell Ahart 2010-4-9 16577 Butte Along the northwest side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 38 Comment
  CHSC45095  Gentiana newberryi var. newberryi Pauleen Broyles; R. A. Schlising, L. P. Janeway, B. Castro 1987-7-19 1076 Butte Ca 17 km ne of Inskip. Meadow on n side of Coon Hollow Creek. 1638 Comment
  CHSC23642  Geranium molle M. S. Taylor 1976-3-30 1039 Butte On s side of Cherokee Rd, ca. 1 mi s of Cherokee, on n side of Table Mountain. 304 Comment
  CHSC82395  Geranium molle Lowell Ahart 2002-5-7 9625 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
  CHSC99007  Geranium molle Lowell Ahart 2008-5-21 14764 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC36812  Gilia capitata subsp. mediomontana L. Ahart 1982-6-4 3555 Butte On a lava cap, 1.5 mi e of Camp 18 and ca. 8 mi e of Feather Falls. 1000 Comment
  CHSC44413  Gilia capitata subsp. pedemontana Lowell Ahart 1988-5-30 6028 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM181675  Gilia tricolor Williams 1927-4-11 s.n. Butte Near Chico Comment
  CAS-BOT-BC266589  Githopsis pulchella Mary E. Wall 1936-6-1 s.n. Butte Paradise Comment
  CHSC50106  Githopsis pulchella subsp. campestris Vernon Oswald 1990-4-24 4170 Butte Lime Saddle Recreation Area on the 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
  CHSC86852  Githopsis pulchella subsp. campestris L. P. Janeway; Gail Kuenster, Shirley Innecken 2003-5-14 7788 Butte Northern Sierra Nevada Foothills. West side of West Branch Feather River arm of Lake Oroville, 680 m southwest of Cape Horn. 314 Comment
  SEINET10906426  Githopsis pulchella subsp. campestris A. Arthur Heller 1937-5-31 Heller s.n. Butte Comment
  SEINET10464588  Githopsis specularioides Mary Susan Taylor, James D. Jokerst 1980-4-18 Taylor 2526 Butte On east side of Humbug road, about 3 miles southwest of Nimshew 518 Comment
  JEPS103370  Glinus lotoides Lowell Ahart 2002-10-17 9982 Butte On the gentle hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  CAS-BOT-BC282821  Glyceria X occidentalis L. P. Janeway 1991-6-7 3990 Butte Ca 0.8 mi. east of Palermo-Honcut Road ca. 5.1 mi. south of Palermo 38 Comment
  JEPS94779  Glyceria declinata Lowell Ahart 1998-6-9 7987 Butte about 7 air mi n Oroville (sw of the lone oak tree, nw of the cow chute along Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  SEINET10508575  Glyceria occidentalis Lowell Ahart 1983-4-18 Ahart 3936 Butte Peter Ahart Ranch, ca. 3 mi ne of Honcut. Valley Grassland; 50 m. 50 Comment
  CHSC28759  Glycyrrhiza lepidota J. D. Jokerst 1979-6-16 141 Butte Upper Bidwell Park, E. of Chico, alng Big Chico Cr. 167 Comment
  CAS-BOT-BC302477  Gnaphalium palustre Lowell Ahart 1985-11-7 5239 Butte About 90 feet below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek flows into the river, about 1/2 mile west of the Ponderosa Dam 274 Comment
  CHSC116747  Gnaphalium palustre Lowell Ahart 2016-5-24 20854 Butte About 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC96225  Gratiola ebracteata R. Fischer 2006-4-25 974 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Located at bottom of 10-Mile House Road ca. 0.5 miles s of end of upper park property. Plants growing in roadside spring drainage. 259 Comment
  JEPS113905  Grindelia hirsutula L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills; Along the Oroville-Quincy Hwy 0.3 road km SW of S end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville 306 Comment
  CHSC82092  Gypsophila elegans var. elegans Lowell Ahart 2001-4-15 8726 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  RSA496348  Hackelia californica Elaine Joyal, D. Mehlman 1988-7-3 1308 Butte Butte-Tehama Cos. line: Lassen National Forest, e side of Humboldt summit. 2100 Comment
  CHSC42825  Hastingsia alba L. P. Janeway 1987-6-11 2184 Butte 3.0 mi south of Big Bar Mtn via road. 1021 Comment
  CHSC46475  Hastingsia alba Vernon Oswald 1989-6-19 3810 Butte Feather Falls-Cascade Rd, ca. 0.7 mi s of the road to Camp 18. 1219 Comment
  CHSC43609  Hazardia whitneyi var. whitneyi Vernon Oswald 1985-9-2 1936 Butte Flea Valley--Sawmill Peak Rd. (V-Line) 0.9 mi ne of Jordan Hill--Magalia Rd. 950 Comment
  CHSC46332  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte Along the edge of a new subdivision road, 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor. 76 Comment
  CAS-BOT-BC306293  Hedypnois cretica Lowell Ahart 1989-5-23 6235 Butte 1/2 mile east of Dunstone Drive, about 1/2 mile north of Bangor Park Road, west of Bangor 76 Comment
  CHSC33944  Helenium bigelovii M. S. Taylor; L. Ahart 1981-8-16 4203 Butte Jones Meadow, ca. 3 mi s of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1828 Comment
  CHSC51853  Helenium bigelovii L. P. Janeway 1987-6-27 2360 Butte Mdw on E slope of Bald Mtn; along the Concow Rd. 1694 Comment
  CHSC20681  Helianthus bolanderi M. S. Taylor 1975-6-30 809 Butte In ditches on e side of Cohasset Hwy, ca. 2 mi n of Chico. 91 Comment
  CAS-BOT-BC305516  Helianthus bolanderi William Anderson 1964-8-16 s.n. Butte Butte Creek Comment
  JEPS128617  Heliotropium europaeum Lowell Ahart 2017-8-8 21656 Butte Park, west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  CHSC41864  Helminthotheca echioides Lowell Ahart 1986-10-29 5413 Butte Along the edge of Wickman Road, about 1 1/4 miles north of Highway 162, about 2 1/2 miles north-west of Biggs. 28 Comment
  CHSC51358  Helminthotheca echioides Vernon Oswald 1990-9-20 4452 Butte Portion of Rancho Bosquejo. Sacramento River at the west end of Cana Hwy. Along the river. 48 Comment
  UC186060  Hemizonia congesta subsp. luzulifolia H. M. Hall 1914-8-1 9825 Butte near Chico Comment
  RSA770728  Hemizonia fitchii George K. Helmkamp, E. A. Helmkamp 2009-9-5 15585 Butte Lower Honcut Road, 0.9 rd. mi. west of Honcut, 7.8 mi. SE (111 deg ) of Gridley 34 Comment
  SEINET7014220  Hemizonia fitchii Elmer Kingsford August-1314 3383 Butte Oroville. Comment
  CHSC33681  Hemizonia pungens subsp. septentrionalis L. Ahart 1981-5-16 2803 Butte On Gray Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  JEPS124002  Herniaria hirsuta var. hirsuta Lowell Ahart 2015-4-18 20046 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  CAS-BOT-BC310157  Hesperevax caulescens H. E. Brown 1897-4-15 209 Butte Near Clear Creek Comment
  UC1185274  Hesperevax caulescens H. E. Brown May 1 1897-May 15 1897 209 Butte near Clear Creek Comment
  CAS-BOT-BC175995  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte 8 miles north of Oroville Comment
  JEPS16249  Hesperolinon californicum A. A. Heller 1914-4-24 11323 Butte hills 8 mi n Oroville Comment
  CHSC104815  Heterocodon rariflorum Lowell Ahart 2010-6-9 16777 Butte Between the vernal pool and 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
  CHSC30803  Heterocodon rariflorum M. S. Taylor 1978-7-21 1828 Butte On s side of Oroville-Quincy Hwy along creek in meadow, ca. 14 mi n of Lake Madrone. 1463 Comment
  CHSC44276  Heterocodon rariflorum Vernon Oswald 1988-6-14 3379 Butte Jordan Hill Rd. 0.5 mi s of the road to Sawmill Peak. 890 Comment
  CHSC51862  Heterocodon rariflorum L. P. Janeway 1988-6-25 2899 Butte Small meadow along Bull Hill Rd 2.9 mi from the Skyway. 1508 Comment
  SEINET10939149  Heterocodon rariflorum Mary Susan Taylor 1980-5-27 Taylor 2684 Butte T21N R6E sc sec 30. Big Bend quad. On Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, large granite dome 998 Comment
  SEINET10906090  Heterocodon rariflorum Lowell Ahart 1973-5-29 Ahart 246 Butte Peter Ahart Ranch, Honcut 46 Comment
  CHSC101754  Heuchera micrantha var. erubescens Lowell Ahart 2009-5-23 15738 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 234 Comment
  CHSC41571  Hibiscus lasiocarpos var. occidentalis Lowell Ahart 1974-8-2 573 Butte Along a ditch near Butte Creek, about 9 miles west of Biggs. 30 Comment
  CHSC31650  Hirschfeldia incana L. Ahart 1976-4-4 1151 Butte Along the edge of North Honcut Creek, Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC55331  Hirschfeldia incana Lowell Ahart 1974-5-18 s.n. Butte Near Honcut. 175 Comment
  SEINET10451904  Hoita macrostachya Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4201 Butte T19N R6E nw sec 19. Ca. 0.5 mi sw of jct of Oroville-Forbestown Rd & Black Bart Rd, ca. 6 mi sw of Forbestown. Yellow Pine Forest; 750 m. 750 Comment
  CHSC27242  Holcus lanatus P. Moyer 1972-4-9 170 Butte Chico State campus. Railroad tracks service road. 60 Comment
  JEPS116004  Holcus lanatus Lowell Ahart 2009-6-19 15937 Butte Along trail, on the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC320294  Holocarpha virgata Lowell Ahart 1979-9-25 s.n. Butte 1/2 mile east of Oregon City 400 Comment
  CAS-BOT-BC150115  Holodiscus microphyllus var. glabrescens H. F. Copeland 1928-8-14 398 Butte Near Jonesville. Between Jones Creek and Scotch-John Creek 1828 Comment
  CHSC58951  Holodiscus microphyllus var. glabrescens Lowell Ahart 1992-7-26 6842 Butte Slope, on the west side of a stream, about 1/2 mile north of the Carr Mine, about 2 (air) miles south of Snow Mountain. 1767 Comment
  RSA4243  Holodiscus microphyllus var. glabrescens E. B. Copeland 1929-7-17 375 Butte Above Jonesville. 2000 Comment
  CAS-BOT-BC284987  Hordeum depressum Lowell Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley 35 Comment
  CAS-BOT-BC285091  Hordeum marinum subsp. gussoneanum John Thomas Howell 1961-9-22 36781 Butte Jarbo Gap, Feather River Highway Comment
  JEPS117266  Hordeum marinum subsp. gussoneanum Lowell Ahart 2010-5-14 16644 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards north of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CHSC46239  Horkelia fusca subsp. parviflora Pauleen Broyles 1987-7-5 1075 Butte Ca 7 km n. of Inskip on Bull Hill Rd, along Coon Creek. 1500 Comment
  CHSC46590  Horkelia fusca subsp. tenella Vernon H. Oswald 1989-7-4 3838 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Edge of meadow. 1767 Comment
  UCD113566  Horkelia tridentata M. S. Taylor 1980-5-27 2711 Butte Yellow Pine Forest in openings on edge of Little Bald Rock near creek, ca. 3 mi S of Brush Creek. 1016 Comment
  SEINET11907302  Horkelia tridentata L. S. Rose 1939-1 39231 Butte 2 mi NE of Clipper Mills 1173 Comment
  SEINET5327465  Hosackia oblongifolia var. oblongifolia K. Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC8585  Hosackia pinnata B. Jackson 1968-5-5 27 Butte Taken ca. 1 mi S. of Cohasset along stream by Cohasset Rd. 365 Comment
  CHSC55492  Hosackia stipularis var. ottleyi L. P. Janeway 1991-4-8 3868 Butte Ca 0.1 mi east of Dark Canyon Road, and ca 1.0 mi south of Hwy 70. 609 Comment
  CHSC31156  Hydrophyllum occidentale M. S. Taylor 1979-5-4 1997 A Butte Along Millsap Bar Rd in shady road embankment, ca. 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CAS-BOT-BC400828  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte Ten mile house east of Chico Comment
  CHSC45901  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte Growing on moist granite soil, near the edges of small seeps, near Bean Creek Road, near the south side of Little Bald Rock, about 15 miles north-east of Oroville. 1005 Comment
  JEPS118482  Hypericum anagalloides Lowell 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 974 Comment
  UC871904  Hypericum anagalloides A. A. Heller 1916-9-8 12652 Butte 10 mi. e. Chico Comment
  LA212279  Hypericum concinnum James R. Shevock; 1972-5-19 s.n. Butte Near Lake Oroville, along Highway #70. 91 Comment
  CHSC21384  Hypericum patulum var. henryi M. S. Taylor 1975-6-22 781 Butte Ornamental on s side of Holt Hall, California State University, Chico. Comment
  CAS-BOT-BC401217  Hypericum perforatum John Thomas Howell 1962-6-16 37580 Butte Pentz road 2 mi. s. of Magalia 609 Comment
  SBBG128029  Hypericum perforatum L. Ahart 2010-6-25 16841 Butte open pasture field, on the N sideof the improved parking area, ca. 100 yards N of the cattle chute and Cherokee Rd, N Table Mtn, ca. 7 mi N of Oroville 409 Comment
  SEINET10472157  Hypericum perforatum Lowell Ahart 1990-10-3 Ahart 6616 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mile north-east of the Canyon Creek Bridge across Lake Oroville. Foothill Woodland (destroyed). T20N R5E SW/S16. 259 Comment
  CHSC21168  Hypochaeris glabra M. S. Taylor 1975-5-3 216 Butte Ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CHSC6687  Hypochaeris glabra Marilyn Lee 1968-4-19 125 Butte Along Cherokee Road ca 2 miles S. of Cherokee, 105 yards E. of cemetary. Table Mt. Comment
  CHSC43254  Hypochaeris radicata Lowell Ahart 1987-10-16 5913 Butte Along Oroville Quincy Highway, along the edge of Madrone Lake. 609 Comment
  RSA136349  Iris hartwegii Lee W. Lenz, E. K. Balls 1955-5-13 20689 Butte Just south of Paradise on road to Oroville 549 Comment
  CHSC99636  Iris macrosiphon H. Koeth; H. Jansen 2007-5-2 Butte Big Chico Creek Ecological Reserve, Chico (Forest Ranch). UTM 10 610006E 4406721N. 471 Comment
  CHSC46179  Isoetes howellii Lowell Ahart 1975-5-11 754 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  JEPS127194  Isoetes nuttallii Lowell Ahart 2016-4-15 20743 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  HSC66269  Isoetes nuttallii M. S. Taylor, J. D. Jokerst, L. Ahart 1980-6-4 2438 Butte 500 yards N of Swedes Flat Rd., 50 ft. W of Rocky Honcut Creek, 2 mi. E of Oroville-Bangor Hwy. 10 mi. S of Oroville 366 Comment
  CHSC45120  Isolepis setacea V. Oswald; L. Ahart 1988-6-17 3405 Butte Pinkard Creek ca. 1.5 mi n of Lost Creek Reservoir. Along the edge of the creek where it flows through a large meadow developed on impounded tailings from placer and hydraulic mining upstream. 1066 Comment
  CHSC93648  Juglans californica var. hindsii Paul Kirk; Joe Silveira 2001-5-25 2 Butte Rancho Llano Seco, 1.8 km WSW of ranch house, just off the ranch road south of 'The Lagoon' around Ryan Island. 30 Comment
  SFV16935  Juglans californica var. hindsii J. N. Hogue 1980-9-6 83 .3 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  SEINET10872253  Juncus bufonius Mary Susan Taylor 1982-4-28 Taylor 4366 Butte T17N R1E sw/se sec 11. Pennington quad. Graylodge Wildlife Refuge, near parking lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 65 ft. 20 Comment
  CHSC102420  Juncus bufonius var. bufonius Lowell Ahart 2009-7-9 16005 Butte On damp to wet soil, in ditch, on the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC38917  Juncus bufonius var. bufonius Vernon Oswald 1983-6-7 646 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
  CHSC39661  Juncus bufonius var. bufonius Lowell Ahart 1983-6-21 4096 Butte Along the edge of Bloomer Hill Road, about 3 miles north-west of the Oroville Quincy Highway, about 16 miles north-east of Oroville. Section 30. 700 Comment
  CHSC78328  Juncus bufonius var. bufonius Lowell Ahart 2000-6-27 8511 Butte Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville. 993 Comment
  JEPS127240  Juncus bufonius var. bufonius Lowell Ahart 2016-5-24 20869 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
  UC1609090  Juncus bufonius var. bufonius Lowell Ahart 1993-5-17 6949 Butte about 1 1/2 mi n and 3 mi e of Honcut (about 12 mi se of Oroville, on w side of Dunstone Road); Dunstone Road 60 Comment
  UCSB63749  Juncus bufonius var. congestus Ahart, Lowell 1998-5-2 Butte T17N, R2E, southwest 1/4 Section 7; graded north side of Evans Reimer Road; about 1/4 mile east of Pennington Road; about 5 miles (air) southwest of Gridley 21 Comment
  CHSC37377  Juncus capitatus R. A. Schlising 1982-4-24 4228 Butte Richvale Vernal Pools, 1/4 mi s of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Themalito Afterbay. Comment
  CHSC55455  Juncus capitatus L. P. Janeway 1991-4-21 3914 Butte About 1 mi south of Wyandotte and 1/2 mi west of Dunstone Road. 175 Comment
  RSA168969  Juncus capitatus Annetta Carter 1942-5-2 1670 Butte South of Oroville. Comment
  SEINET10472432  Juncus capitatus Lowell Ahart 1985-5-10 Ahart 4957 Butte East branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. Comment
  UCD141428  Juncus cyperoides L. Ahart 1982-6-1 3527 Butte east side of Black Bart Road about 1/2 mile southwest of the intersection of Black Bart Road and Forbestown Road, west of Forbestown. 2000 Comment
  UC1562371  Juncus diffusissimus Lowell Ahart 1990-5-21 6476 Butte about 4.5 mi sw Oroville (about 0.25 mi s of Feather River, about 0.4 mi w of Pacific Heights Road, w. edge of small pond) 30 Comment
  CHSC99753  Juncus effusus subsp. effusus Lowell Ahart 2008-7-23 15144 Butte On the north side of the South Fork of the Feather River, about 10 yards west of where Sucker Creek enters the South Fork of the Feather River, below the high water line of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  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
  JEPS114880  Juncus effusus subsp. pacificus Lowell Ahart 2008-7-23 15152 Butte On the east side of McCabe Creek, below the high water line of Lake Oroville, about 100 yards southwest of the poor parking area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville 243 Comment
  POM111067  Juncus effusus subsp. pacificus C. C. Bruce 1897-05 1878 Butte Little Chico Comment
  CHSC107583  Juncus effusus var. pacificus Lowell Ahart 2011-8-23 17646 Butte In the large meadow, Pinkard Creek flows through the meadow, east of the corral, about 1 mile north of Lost Creek Reservoir Dam, about 4 miles (air) northeast of Clipper Mills. Meadow in Yellow Pine Forest. 1133 Comment
  UC600804  Juncus ensifolius H. F. Copeland 1932-7-19 Butte Butte Creek Jonesville 1600 Comment
  CHSC28654  Juncus exiguus J. D. Jokerst; M. S. Taylor 1979-10-13 392 Butte Adjacent to creek. Intersecton of Jordan Hill Rd. (Ponderosa Way) and Griffth Gulch. 701 Comment
  SEINET10472445  Juncus howellii Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4749 Butte Along the road, about 1 1/2 mile south-east of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles north-east of Stirling City. Comment
  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
  SBBG128543  Juncus laccatus L. Ahart 2011-8-23 17647 Butte Pinkard Crk flows through the meadow, E of the corral, ca. 1 mi N of Lost Crk Reservoir Dam, ca. 4 mi NE of Clipper Mills 1133 Comment
  CHSC47559  Juncus leiospermus Lowell Ahart 1979-5-7 1857 Butte Near a large lava rock with Indian Mills in it, east of Kunkle Creek, about 1/2 mile north of Kunkle Reservoir, about 2 1/2 miles south-east of Paradise. 472 Comment
  SEINET10472450  Juncus leiospermus Mary Susan Taylor 1980-4-21 Taylor 2560 Butte T20N R4E center of se sec 8. Table Mountain, ca. 8 mi N of Oroville; thin soils over basalt bedrock. With J.D. Jokerst. 610 Comment
  SD121519  Juncus leiospermus var. ahartii Lowell Ahart 1982-5-1 3402 Butte Peter Ahart Ranch, ca. 2 miles north and I(c) mile east of Honcut, between Marysville and Oroville. Wet bare soil around the edges of a large vernal pool in one of the farmed fields. Common only around edge of pool. 49 Comment
  CAS-BOT-BC110141  Juncus leiospermus var. leiospermus Lowell Ahart 1984-4-6 4543 Butte About 0.5 mile north of Kunkle Res., about 2 miles south of Paradise. 600 Comment
  CHSC93495  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12602 Butte Center of a small swale, about 100 yards southwest of the reservoir dam, about 2 3/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 280 Comment
  JEPS110152  Juncus leiospermus var. leiospermus Lowell Ahart 2006-5-8 12581 Butte On the bottom of a tire track through a marshy area, about 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parkin area, North Table Mountain, about 7 miles (air) north of Oroville 377 Comment
  RSA712858  Juncus leiospermus var. leiospermus L. Ahart 2006-5-8 12581 Butte About 20 yards east of Cherokee Road, about 100 yards northeast of the large unimproved parking area. North Table Mountain, about 7 miles (air) north of Oroville. 378 Comment
  SD121520  Juncus leiospermus var. leiospermus Barbara Ertter, Jeffrey L. Strachan, Lowell Ahart 1980-5-7 3309 Butte North Table Mountain, ca. 5 airmiles north of Oroville, wet soil along streamlet trodden by cattle and near parking area, top of basaltic butte. 395 Comment
  UC1438371  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 1702 Butte ca 7 mi n Oroville (on top of Table Mountain); Table Mountain 400 Comment
  CHSC11960  Juncus nevadensis E. B. Copeland 1929-7-29 348 Butte Near Butte Creek House, above Jonesville. 1750 Comment
  JEPS110170  Juncus nevadensis Lowell Ahart 2006-8-15 13179 Butte North edge of a wet area west of a large open meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  LA20056  Juncus nevadensis var. nevadensis E. B. Copeland; 1929-7-29 sn Butte near Butte Creek House, above Jonesville 1750.0 Comment
  JEPS117325  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north 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
  CHSC57158  Juncus orthophyllus L. P. Janeway 1988-6-14 2778 B Butte Ewalt Camp; near meadow along West Branch Butte Creek 2.0 mi east from Hwy 32 by dirt road. 922 Comment
  JEPS113767  Juncus patens Lowell Ahart 2007-7-2 14246 Butte On the north side of Big Ridge Road, about 20 yards south of Minnie Creek, about 1 1/2 miles east of the Oroville Quincy Highway, about 10 miles (air) northeast of Oroville 680 Comment
  RSA755380  Juncus patens L. Ahart 2009-7-9 16004 Butte East side of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles west of Highway 32, about 10 miles northeast of Chico. 210 Comment
  SEINET10905110  Juncus tenuis Mary Susan Taylor 1978-9-9 Taylor 1910 A Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CHSC44526  Juncus trilocularis Lowell Ahart 1988-6-29 6096 Butte Along a small wash south of Bean Creek Road, about 1/2 mile southeast of Little Bald Rock. 975 Comment
  CHSC96965  Juncus trilocularis Lowell Ahart 2007-6-12 14060 Butte High ridge on Big Bald Rock, about 14 miles (air) northeast of Oroville. 972 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
  RSA755034  Juncus usitatus L. Ahart 2009-6-18 15913 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  NY790318  Keckiella lemmonii A. A. Heller 1902-5-6 5471 Butte Berry Canyon (near Clear Creek) Comment
  CHSC48889  Kelloggia galioides Vernon Oswald; Lowell Ahart 1987-7-1 3051 Butte Scotts John Rd. 1.3 mi N of the road connecting Huboldt and Humbug Rds, ca 2.5 mi ENE of Jonesville. 1828 Comment
  SEINET10968831  Kelloggia galioides Mary Susan Taylor 1977-8-17 Taylor 1484 Butte Scattered in Red Fir Forest, at Humboldt Summit at Butte-Tehama County line, ca. 50-100 ft W of Old Humboldt Rd on Butte County side; with Arctostaphylos neva densis, Hackelia californica. 2134 Comment
  CHSC83090  Kickxia elatine Lowell Ahart 2002-10-17 9993 Butte On the gentle hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  CHSC45267  Kochia scoparia Vernon Oswald 1988-9-21 3702 Butte Ranch Arroyo Chico. Pine Creek Landing, Bidwell River Park, w of Chico. 41 Comment
  HSC102772  Koeleria gerardi J. P. Smith 2014-4-30 13838 Butte Along State Route 32. 389 Comment
  CHSC58287  Koeleria phleoides Lowell Ahart 1992-5-9 6754 Butte Along a dirt road, near homestead, on the north side of the Thermalito Diversion Pool, Lake Oroville Recreation Area, about 1 1/2 miles west of Oroville Dam. 76 Comment
  CHSC90806  Koeleria phleoides Lowell Ahart 2005-5-2 11769 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
  CHSC37528  Lactuca saligna M. S. Taylor; L. Ahart 1982-10-11 5151 Butte Graylodge Wildlife Refuge, near check-in station, sw jct of Pennington and Rutherford Rds, ca. 12 mi sw of Gridley. 21 Comment
  CAS-BOT-BC340449  Lactuca saligna John Thomas Howell 1959-9-20 34704 Butte Feather River Highway at West Branch bridge Comment
  UCD133505  Lactuca sativa L. E. Hazeltine 1916-6-28 s.n. Butte Chico. Comment
  CHSC28570  Lactuca serriola M. S. Taylor; J. D. Jokerst 1979-11-11 2280 Butte Edge of ricefield, on w side of Goodspeed Watt Rd, ca. 6 mi s of Chico. 33 Comment
  CDA7502  Lactuca serriola T. C. Fuller 1959-10-2 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  UCD133543  Lactuca serriola A. A. Heller 1916-9-9 12654 Butte near Durham. Comment
  CHSC36397  Lagophylla glandulosa J. Boze 1982-5-8 445 Butte Near shooting range and Horseshoe Lake in Upper Bidwell Park. Comment
  CAS-BOT-BC341312  Lagophylla glandulosa H. M. Hall 1914-8-1 9826 Butte Between Chico and Oroville. A ruderal at Heller's ranch Comment
  CAS-BOT-BC341321  Lagophylla glandulosa Alice Eastwood 1912-8-22 1933 Butte Payne Creek, Lassen Butte Region Comment
  CHSC45213  Lamarckia aurea Lowell Ahart; Jim Jokerst 1980-3-23 2050 Butte At the north end of the West Branch Bridge (Highway 70) and on the north side of the road, about 14 miles north of Oroville. 304 Comment
  CHSC7100  Lasthenia californica Nancy Wiseman 1969-4-17 Butte 50 yds n of Skyway ca. 1 mi e of Chico. Comment
  CAS-BOT-BC337911  Lasthenia californica A. A. Heller; H. E. Brown 1902-5-5 5450 Butte Near Chico Comment
  CHSC90989  Lasthenia californica subsp. californica Lowell Ahart 2005-5-11 11791 Butte Above upper margins of vernal pools, south part of North Table Mountain, about 200 yards northwest of the poor dirt road off of Cherokee Road, about 200 yards south of the rim into Beatson Hollow, about 7 miles (air) north of Oroville. 358 Comment
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Jan 19 2011
  CHSC14014  Lasthenia fremontii G. Notch 1974-4-23 175 Butte Along Broyles Rd., ca. 4 mi w of Hwy 99. 76 Comment
  CHSC38372  Lasthenia fremontii Vernon Oswald 1983-4-6 280 Butte Upper Bidwell Park, Chico, in the Omicron Enclosure ca. 750 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  RSA715556  Lasthenia fremontii L. Ahart 2005-5-14 11811 Butte Peter Ahart Ranch, about 2 miles N and 0.25 mile E of Honcut, about 12 miles (air) SE of Oroville. 26 Comment
  UCSB63630  Lasthenia fremontii Long, N. 1974-4-23 Butte Along side Cana Pine Road, ca. yards off Highway 99 and ca. 12.7 mi. NW of Chico Comment
  CHSC31574  Lasthenia glaberrima L. Ahart 1978-5-12 1718 Butte Near the edges of a wash. Peter Ahart Ranch, Honcut. 50 Comment
  UC2061406  Lasthenia gracilis Rachael L. Olliff Yang with Meagan F. Oldfather 2017-4-5 12 Butte Table Mountain, about 100 m North of the main public parking lot. Comment
  JEPS117244  Lathyrus angulatus L. Ahart 2010-5-5 16607 Butte Parking area east of McCabe Creek, a few feet below the high water line of Lake Oroville, about 11 air miles northeast of Oroville 264 Comment
  SEINET12151170  Lathyrus hirsutus C. V. Piper 1906-1 s.n. Butte Chico Comment
  RSA0080126  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte South of the paved park road Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  POM29222  Lathyrus nevadensis subsp. nevadensis C. C. Bruce 1897-04 2086 Butte Yankee Hill. Comment
  CAS-BOT-BC213289  Lathyrus sulphureus Frances Brown 1935-4-1 s.n. Butte Near Durham. Comment
  CDA15364  Lathyrus sulphureus G. F. Hrusa 1997-5-29 13801 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Comment
  CHSC38496  Lathyrus sulphureus Vernon Oswald 1983-4-27 398 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. ca. 100 ft e of the e entrance to Parking Area S (Brown's Hole). 231 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
  JEPS115691  Lathyrus tingitanus Lowell Ahart 2009-6-3 15811 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 311 Comment
  UC179642  Layia fremontii A. A. Heller 1914-4-14 11292 Butte 8 mi n Oroville Comment
  POM53359  Layia fremontii E. B. Copeland 1903-4-11 3039 Butte Chico Comment
  CHSC111954  Lemna minuta Lowell Ahart 2012-6-5 18158 Butte Wet area along the poor dirt road, on the south side of Beatson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 295 Comment
  HSC97027  Lemna minuta L. Ahart 2006-5-26 12639 Butte On the S side of Sheldon Avenue at the intersection with Larkin Rd., ca. 1 mi. S of Gridley Rd., ca. 2 air mi. SE of Gridley. 28 Comment
  JEPS103249  Leontodon saxatilis subsp. longirostris Lowell Ahart 2002-5-7 9610 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
  JEPS127008  Leontodon saxatilis subsp. longirostris Lowell Ahart 2016-5-24 20855 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
  JEPS120954  Lepidium didymum Lowell Ahart 2013-4-20 18557 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CHSC47383  Lepidium nitidum Lowell Ahart 1973-3-7 158 Butte In a field, Peter Ahart Ranch, about 2 miles north and 1 mile est of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC103658  Lepidium nitidum var. nitidum Lowell Ahart 2010-3-14 16571 Butte Edges of a gravel road, about 50 yards north of the wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 36 Comment
  UCD115866  Lepidium pinnatifidum M. S. Taylor; L. Ahart 1982-10-11 5154 Butte Graylodge Wildlife Refuge, ca. 1/4 mi s of Rutherford Rd, on rd to parking lot 5, ca. 1/4 mi se of HQ, 12 mi sw of Gridley. 19 Comment
  CDA43062  Lepidium strictum L. P. Janeway 2010-11-17 10233 Butte Sacramento Valley.; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.). Comment
  JEPS115831  Lepidium strictum Lowell Ahart 2009-4-26 15608 Butte Upper Bidwell Park, on the west side of Highway 32, parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  JEPS95945  Leptochloa fascicularis Lowell Ahart 1999-8-13 8153 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  LA35680  Leptochloa fusca subsp. fascicularis H. S. Yates; 1936-8-14 6126 Butte 3 mi NW of Nelson 30 Comment
  SEINET10935974  Leptodactylon pungens subsp. pulchriflorum Mary Susan Taylor 1978-7-18 Taylor 1699 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC10761  Leptosiphon acicularis Lowell Ahart 1962-4-9 Butte Ahart Ranch, Honcut. 45 Comment
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Jul 19 2018
  CHSC113227  Leptosiphon bicolor Lowell Ahart 2014-5-2 19436 Butte Along the trail, north side of Beatson Hollow, about 1 1/2 miles southwest of the Improved Parking Area and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 305 Comment
  CHSC116163  Leptosiphon ciliatus Lowell Ahart 2015-6-16 20236 Butte On the west side of the paved road, about 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. 1406 Comment
  POM74989  Leptosiphon filipes C. C. Bruce 1897-04 1968 Butte [name of locality illegible] Comment
  CHSC23685  Lessingia nana K. Stern 1969-1-1 Butte Growing in Upper Bidwell Park, Chico. Comment
  UCD134085  Lessingia nana P. B. Kennedy 1927-6-1 s.n. Butte Gridley. Comment
  RSA0118939  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  CAS-BOT-BC341792  Lessingia nemaclada Clarence R. Quick 1964-7-9 64 -63 Butte Slope north of Jarbo Gap Comment
  CHSC27621  Lessingia virgata Robert A. Schlising 1977-10-9 3208 Butte Cohasset Road S of Cohasset, 3.0 mi NE of road to Richardson Springs and 3.3 mi NE of crossing of Mud Creek. Roadside. Comment
  CHSC52001  Lessingia virgata B. Castro 1987-9-25 227 Butte Fernandez Grant area. Field at jcn Biggs East Rd and Dos Rios Rd at e side of East Biggs. 33 Comment
  UCD134099  Lessingia virgata John Thomas Howell 1959-9-19 34612 Butte 5 miles west of Oroville. 45 Comment
  CHSC100837  Lewisia nevadensis R. A. Schlising 1980-6-26 3787 Butte 3.2 mi SEof Butte Meadows on Bull Hill Road (='Skyway'); in meadows along Bull Creek. 1511 Comment
  UC1031359  Lewisia rediviva A. A. Heller 1938-4-14 15029 Butte top of Table Mountain Table Mountain Comment
  CAS-BOT-BC509474  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1500 Comment
  CHSC2293  Lilium pardalinum subsp. pardalinum E. Walker 1932-6-26 Butte Magalia. 731 Comment
  RSA700398  Limnanthes alba T. W, Henrich 2004-4-15 s.n. Butte Chico. In a field to the northeast of Viceroy Drive and Camberwell Court, northeast Chico. Comment
  CHSC1005  Limnanthes alba subsp. alba Edna Canfield 1904-5-7 Butte Hooker Oak Field. 76 Comment
  RSA767488  Limnanthes douglasii L. Ahart 2010-6-9 16788 Butte Bottom of small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5.5 air miles northeast of Oroville. 399 Comment
  HSC86001  Limnanthes douglasii J. Hunter 1986-3-21 32 Butte N Table Mtn., 8 km N Oroville, 200 m E Cherokee Rd. 350 Comment
  SEINET12183092  Limnanthes douglasii G. C. Halcomb 1978-1 3 Butte ca 1 mi E of Chico at intersection of Bruce Rd. and Skyway Rd. 100 yds WNW of Bruce Rd 70 Comment
  HSC92522  Limnanthes douglasii subsp. rosea Jeanne McFarland, Kathie Meyer, Anne Mullenniex 1995-4-9 43 Butte 3 mi. NE of Chico in Bidwell Park. 290 Comment
  UCD71183  Limnanthes floccosa M. Plotkin 1997-3-21 MSP 11 a Butte Chico, at intersection of Cohasset highway and Ryan Road (Ryan Road ends). 91 Comment
  UCD128337  Limnophila X ludoviciana J. Eckert 2011-11-1 s.n. Butte Along W. Hamilton Rd, ca. 1.5 mi W of Hwy 99. Incoming water ditch at experiment station. Comment
  UCD19360  Limnophila X ludoviciana E. Dean; with J. Ditomaso and E. Healy 2001-8-20 851 Butte Biggs UC Field Station. North of town of Biggs, W of jct of Hwys 99 and 162. North side of Hamilton Road, ca. 1/8 mile E of jct with Riceton Hwy, by dirt turnout half way between first two dirt roads that enter rice fields on the N side of the road. Turnout leads to walking path. 30 Comment
  SEINET10496787  Linanthus bicolor Mary Susan Taylor 1980-3-28 Taylor 2402 Butte T22N R2E north center border sec 30. Vernal pool area in Valley Grassland, just E of Chico, between Humboldt Rd, cand Hwy 32, ca. 1/4 mi E of Forest Ave., ca. 1.5 mi E of Hwy 99; area soon to be developed. With J.D. Jokerst. 76 Comment
  SEINET7072714  Linanthus filipes A. G. Vestal 1963-5-7 s.n. Butte Roadside adjoining a grassy field, about 4.7 miles east-northeast from Honcut on La Porte Road towards Bangor. Coordinate Datum WGS84/NAD83. (UTM Zone 10, 634477E, 4356857mN. 39? deg. 21' 9" North Latitude, -121? deg. 26' 21" West Longitude. Coordinate datum: NAD 27) Comment
  UC907831  Linanthus filipes P. B. Kennedy 1929-5-4 Butte between Paradise to Chico at summit Comment
  UC947528  Linanthus parviflorus A. G. Vestal 1947-4-30 Butte road to Cherokee Comment
  CHSC109777  Lindernia dubia var. anagallidea Lowell Ahart 2012-10-20 18512 Butte South of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  RSA726854  Lindernia dubia var. anagallidea L. Ahart 2007-7-8 14271 Butte On the north side of North Honcut Creek, Peter Ahart Ranch, aout 3/4 miles north and 2.5 miles east of Honcut, about 12 miles (air) southeast of Oroville. 46 Comment
  SEINET10569962  Lindernia dubia var. anagallidea Lowell Ahart, Peter Ahart 1985-11-5 Ahart 5226 Butte Lake Oroville, about 1/2 mile west of the Ponderosa Dam, near where Sucker Creek flows into the South Fork of the Feather River. Comment
  CHSC33339  Linnaea borealis var. longiflora R. Banchero 1980-7-7 285 Butte Ca. 5.5 mi NE of the town of Feather Falls. 1.9 mi S of the Fall River Campground along the 'Quartz Creek Rd. 1147 Comment
  CHSC116705  Linum bienne Lowell Ahart 2016-5-14 20825 Butte On the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 57 Comment
  JEPS120945  Linum bienne Lowell Ahart 2013-4-20 18553 Butte West side of Wilson Creek, SW of the dredge pond, W of the barn, about 3.25 air miles NE of Honcut. Comment
  CHSC92947  Lithocarpus densiflorus var. densiflorus L. P. Janeway 2005-7-17 8499 Butte Northern High Sierra Nevada. West side near top of ridge on east side of Lockerman Creek, 0.5 km northeast of confluence of Lockerman Creek at Camp Creek. 1076 Comment
  RSA712647  Lithocarpus densiflorus var. densiflorus L. P. Janeway 2005-7-17 8499 Butte Northern High Sierra Nevada. West side near top of ridge on east side of Lockerman Creek, 0.5 km northeast of confluence of Lockerman Creek at Camp Creek. 1076 Comment
  CAS-BOT-BC36590  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Soapstone Hill quad. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees 1463 Comment
  SEINET10871263  Lithophragma Mary Susan Taylor 1981-5-13 Taylor 3695 Butte 4500 ft. T23N R6E se sec 32, Pulga SE quad. In decomposed granite on E side of 23N15.5, ca. 1 mi S of its jct with Four Trees Rd, ca. 8 air mi E of Pulga and 0.5 mi W of Oroville-Quincy Hwy. 1372 Comment
  POM219578  Lithophragma bolanderi H. F. Copeland 1923-3-16 47 Butte [Unspecified] Comment
  POM92056  Lithophragma bolanderi C. C. Bruce 1898-03 2391 Butte [no locality information] Comment
  CHSC25354  Lithophragma campanulatum Marc P. Hayes 1977-4-22 12 Butte Ca. .5 km sw of Heinz Creek, along small creek, ca. 200 m from its confluence and North Fork of Feather River. 450 Comment
  CAS-BOT-BC432266  Lithophragma campanulatum A. A. Heller 1919-5-18 13178 Butte Mosquito Creek between Appleton and Coutelence Comment
  CAS-BOT-BC435492  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte S of Lumpkin Ridge Road, 1 1/2 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  CHSC1655  Lithophragma parviflorum var. trifoliatum B. Hetherington 1935-3-27 Butte Foothills. Comment
  RSA715850  Lithophragma parviflorum var. trifoliatum L. P. Janeway 2005-3-10 8354 Butte Cascade Range Foothills [error: actually Sierra Nevada foothills] E edge of city of Chico, N side of Humboldt Road 1.8 km NE of Bruce Road. 134 Comment
  CHSC50423  Lithophragma tenellum Vernon Oswald 1990-6-14 4298 Butte Jones Meadow-Lotts Lake Rd (T-Line), ca. 2 miles southwest of Lotts Lake, at the meadow near the headwaters of Kimshew Creek. 1905 Comment
  UC1206542  Lithophragma tenellum E. B. Copeland 1931-6-19 Butte Jonesville at The Summit; Jonesville at The Summit Comment
  CHSC29243  Lithospermum californicum M. S. Taylor 1980-5-8 2603 Butte Ca. 3 mi n of Forest Ranch, ca. 1 mi e of Hwy 32. 853 Comment
  CHSC47991  Lithospermum californicum Vernon Oswald 1986-4-18 1970 Butte Ponderosa Way between Cohasset and Hwy 32 0.6 mi sse of the Middle-East Branch of Mud Creek. On a roadcut. 755 Comment
  CAS-BOT-BC342140  Logfia filaginoides A. A. Heller; H. E. Brown 1902-5-9 5515 Butte Berry Canyon (near Clear Creek) Comment
  CHSC117003  Logfia gallica Lowell Ahart 2016-6-4 20928 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC38827  Lolium multiflorum Vernon Oswald 1983-2-2 58 Butte Upper Bidwell Park, Chico, along Yahi Trail on the flat above Diversion Dam. 121 Comment
  CHSC41557  Lolium multiflorum R. L. Ondricek-Fallscheer 1982-5-26 137 Butte In yard of house on plateau at sw end of Flatiron Ridge, ca. 3 1/2 mi wsw of Paradise. 192 Comment
  SEINET10960424  Lolium multiflorum Laurel L. Huey 1980-4-25 Huey 19 Butte T22N, R1E, Sec 10, (Richardson Springs SW Quad 15'). Immediately S of Chico Muni Airport, W of Cohasset Highway. 60 Comment
  CHSC90624  Lomatium dasycarpum subsp. tomentosum Steven H. Roth 1980-4-25 17 Butte 50 m north of Big Chico Creek at Diversion Dam in Upper Bidwell Park, Chico. Comment
  UC566835  Lomatium dasycarpum subsp. tomentosum Herbert L. Mason 1927-5-10 3721 Butte n.e. Oroville (n. side of Table Mt., Coal Creek); Table Mt., Coal Creek Comment
  CDA38385  Lomatium dasycarpum subsp. tomentosum L. Heinricks 1960-4-25 s.n. Butte Northwest corner of Chico & Cottonwood Roads. 0 Comment
  JEPS14510  Lomatium dasycarpum subsp. tomentosum Rimo Bacigalupi with G. T. Robbins and Francia Chisaki 1956-4-19 5604 Butte below bridge on Nelson Bar rd. (just above N. Fork Feather R.) 198 Comment
  SBBG18209  Lomatium dasycarpum subsp. tomentosum M. Vincent 1962-4-15 175 Butte intersection of Pentz and US Hwy 40A, 13 mi S of Paradise Comment
  POM78772  Lomatium marginatum C. C. Bruce 1897-05 2049 Butte Iron Canyon. Comment
  SEINET10454502  Lomatium marginatum Lowell Ahart 1985-4-24 Ahart 4884 Butte Along the steep sides of North Honcut Creek, Peter Ahart Ranch, about 1 and 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. Comment
  CHSC93489  Lomatium marginatum var. marginatum Lowell 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 (air) north of Oroville. 384 Comment
  CHSC13852  Lomatium utriculatum J. A. Guichard 1973-4-4 14 Butte Area above Chico Creek between Salmon Hole and Devils Kitchen. 182 Comment
  CHSC31066  Lomatium utriculatum M. S. Taylor 1979-6-12 2302 Butte Between Magalia serpentine and Feather River, ca. 1/4 mi down a dirt rd from Jct of Coutelenc Rd and the Skyway. 670 Comment
  HSC38280  Lomatium utriculatum Thomas W. Nelson, Jane P. Nelson 1976-5-10 2482 Butte S facing slope beside Hwy. 191, 1 mi. W of Paradise Comment
  UC1586631  Lonicera hispidula var. vacillans Lowell Ahart 1991-6-22 6664 Butte near Lake Oroville (bottom of the abandoned water ditch, w of Springtown Road) 304 Comment
  UC1609033  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte 6 (air) mi ne Feather Falls (about 200 yards w of the bridge, w side of river); Fall River 1036 Comment
  UC864769  Lotus argophyllus var. fremontii Lewis S. Rose 1940-5-30 40424 Butte 25 mi ne Oroville; Feather River Canyon 609 Comment
  JEPS115583  Lotus corniculatus Lowell Ahart 2009-5-23 15748 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 203 Comment
  JEPS117151  Lotus humistratus Lowell Ahart 2010-4-30 16594 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
  SEINET12161684  Lotus humistratus J. D. Mott 1978-1 7 Butte Cherokee Quadrangle, Upper Miocene Canal 448 Comment
  CDA34221  Lotus micranthus L. Ahart 2010-6-9 16778 Butte About 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville. Comment
  SEINET10451995  Lotus nevadensis Lowell Ahart 1983-5-28 Ahart 4016 Butte Along trail to Feather Falls, ca. 5 mi n of the town of Feather Falls. Yellow Pine Forest; 600 m. 600 Comment
  UC598644  Lotus purshianus var. purshianus John Bright 1936-5-6 13042 Butte near Chico; Mud Creek Comment
  SEINET10452013  Lotus scoparius Lowell Ahart 1985-5-31 Ahart 5037 Butte About 25 feet above the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Launch Area, about 1 mile north-east of Oroville. Comment
  CDA27344  Lotus wrangelianus T. C. Fuller 1958-4-15 Butte Highway 99E, 4 miles northwest of Oroville. 0 Comment
  JEPS121788  Ludwigia decurrens Evan Padgett 2014-8-20 s.n. Butte Butte County, CALIFORNIA. Sacramento Valley. Agricultural fields between Richvale and Highway 162, west of Midway, next to rice fields. Comment
  CDA7108  Lunaria annua L. Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. Comment
  UC726679  Lupinus A. A. Heller 1942-5-17 16477 Butte Pentz Cherokee Road 2 mi above Pentz; Pentz Cherokee Road Comment
  CHSC49842  Lupinus affinis Vernon Oswald 1990-4-4 4147 Butte Vinton Gulch access to the West Branch of Lake Oroville, ca. 0.5 mi (air) north of Cherokee. From a small group of plants near the edge of the cement launching ramp, slightly below the high-water line of the lake. 271 Comment
  CHSC51047  Lupinus albicaulis J. D. Jokerst 1985-5-4 2294 Butte Occasional on west edge of Cherokee Rd just south of Campbell Flat in wooded habitat, 3.7 miles south of the turnoff from Highway 70. 426 Comment
  CHSC113654  Lupinus albicaulis var. albicaulis L. P. Janeway 2014-5-29 11277 Butte Northern High Sierra Nevada. Plumas National Forest; at junction of Roads 18N18 and 19N40 (but 19N40 doesn't exist here anymore). 1.0 air-km north of top of Sunset Hill; upper slopes high above South Fork Feather River arm of Lake Oroville. 774 Comment
  POM27143  Lupinus albicaulis var. shastensis Marcus E. Jones 1897-7-9 s.n. Butte On road from Ptrattville to Chico at Jonesville. 1524 Comment
  UCD105915  Lupinus albifrons A. A. Heller 1915-3-25 11782 Butte southwest of the Marysville Buttes. Comment
  CAS-BOT-BC198377  Lupinus albifrons Charles Piper Smith 1949-4-16 49111 Butte Bangor, 2.6 miles east, Rackerby Road Comment
  CAS-BOT-BC201357  Lupinus albifrons var. albifrons Charles Piper Smith 1949-4-21 49119 Butte Pentz - 1.7 miles east - Cherokee Road Comment
  POM23537  Lupinus albifrons var. eminens C. C. Bruce 1898-05 2028 Butte Doe mill Comment
  JEPS108562  Lupinus andersonii L. P. Janeway, Matt Brown, B. Castro, Samantha Mackey Hillaire 2005-6-21 8427 Butte Northern High Sierra Nevada. Plumas National Forest; top of ridge between Lockerman Creek and Cedar Creek, 1.4 km northeast of confluence of Lockerman and Camp Creeks 1201 Comment
  CHSC90500  Lupinus bicolor E. Ray Latham 1988-3-15 Butte 100 m east of east end of Fremont Street, Chico. Field. 30 Comment
  CHSC54367  Lupinus bicolor var. tridentatus M. Bailey 1991-3-30 556 Butte Butte College campus, n side of hill directly ne of water tower, distance ca 1/4 mi. 176 Comment
  JEPS114719  Lupinus bicolor var. tridentatus Lowell Ahart 2008-5-12 14750 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam 258 Comment
  CHSC46561  Lupinus lepidus var. sellulus V. Oswald 1989-7-12 3847 Butte Road between Jones Meadow and Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC36142  Lupinus nanus Don K. Aust 1981-4-15 19 Butte Ca. 1 mi n of Chico, e side of Cohasset Hwy. 60 Comment
  SEINET11072119 Image available Lupinus nanus subsp. menkerae H. E. Brown 1897-1 155 Butte Near Clear Creek Comment
  CHSC100988  Lupinus polycarpus L. P. Janeway 2008-4-2 9241 Butte Northern Sierra Nevada Foothills. Along edge of Pentz Road 0.6 km north of Durham-Pentz Road. Narrow gravel road shoulder. 198 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
  RSA32926  Lupinus polycarpus A. A. Heller 1942-4-26 16439 Butte Summit of Table Mountain near the road from Cherokee to Oroville. Comment
  JEPS108777  Lupinus polyphyllus var. burkei Lowell Ahart 2006-7-16 12991 Butte On the west side of Willow Creek, on the east side of a large meadow and bog, about 200 yards southeast of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows 1569 Comment
  JEPS23890  Lupinus polyphyllus var. burkei A. A. Heller 1938-7-20 15279 Butte upper end Snag Lake (7 mi e of Chaparral); upper end of Snag Lake 1524 Comment
  SBBG128005  Lupinus polyphyllus var. burkei L. Ahart 2010-9-21 17205 Butte ca. 70 yards E of the poor dirt rd, ca. 80 yards W of Big Kimshew Crk, ca. 1.5 mi NE of Jones Meadow, ca. 2.5 mi SE of Philbrook Reservoir 1917 Comment
  CHSC34235  Lupinus stiversii M. S. Taylor 1981-4-18 2529 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  UC129305  Lupinus stiversii Miss Kate Conger 1907-1 Butte Brush Creek Comment
  JEPS107771  Lupinus succulentus Lowell Ahart 2005-5-2 11757 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
  SEINET10491007  Lupinus vallicola subsp. vallicola Taylor 1981-5-14 Taylor 3717 Butte Pulga se quad. N side of 23noo.2, 2.5 mi sw of merrimac on oroville-quincy Hwy. Corolla blue and white. Yellow pine forest. Associates: lathyrus Sulphureus, galium bolanderi, arbutus menziesii. 975 Comment
  CAS-BOT-BC436564  Luzula cascadensis H. F. Copeland 1920-8-29 145 Butte Jonesville meadow 1219 Comment
  CHSC33727  Luzula comosa var. subsessilis M. S. Taylor 1981-3-12 3398 Butte Along s side of 20N53.2, ca. 1 mi sw of Feather Falls community. 883 Comment
  JEPS113269  Luzula comosa var. subsessilis Lowell Ahart 2007-5-29 13951 Butte On the north side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 100 yards northeast of 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) northea 844 Comment
  CHSC54385  Luzula macrantha M. Bailey 1991-3-6 546 Butte On property s of Honey Run Road and e of Butte Creek; proposed location of Butte Creek Volunteer Fire Station. 103 Comment
  CAS-BOT-BC441209  Luzula macrantha Mrs. H. C. Cantelow 1940-5-10 4091 Butte About 2 mi. E of Bidwell Bar Bridge 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
  SEINET10472488  Luzula subsessilis Mary Susan Taylor 1979-3-31 Taylor 1962 Butte On property belonging to Deanne Lickey; along Ishi Trail Road, ca. 0.5 mi NE of Concow Road and Lake Concow, ca. 25 mi N of Oroville; Yellow Pine Forest; granite soils. 671 Comment
  CHSC52223  Lycopus americanus L. P. Janeway; Heidi Wienert, Scott George 1988-7-27 3093 Butte W side of Murphy Slough, across from Golden State Island. 38 Comment
  CHSC752  Lycopus americanus V. Holt; M. Underhill 1952-7-9 Butte Dodge Lands. 56 Comment
  RSA0036439  Lycopus americanus Lowell A. Ahart 2012-10-20 18511 Butte In the marshy area on the north side of Big Chico Creek, south of Table 34, west of Cedar Grove, Lower Bidwell Park, Chico. 69 Comment
  CHSC36354  Lythrum hyssopifolia M. S. Taylor 1982-5-22 4502 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  CHSC38546  Lythrum hyssopifolia Vernon Oswald 1983-5-31 583 Butte Upper Bidwell Park, Chico, near the trail on the s side of Chico Creek between Day Camp and the power lines. 91 Comment
  CHSC75999  Lythrum hyssopifolia Lowell Ahart; Vernon H. Oswald 1999-9-13 8169 Butte Large disturbed area along the east side of the Sacramento River, northwest of Parrot Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  UC138249  Lythrum hyssopifolia E. B. Copeland 1903-5-28 3274 Butte Pacific Coast, Chico Chico; Pacific Coast, Chico Comment
  JEPS113572 Image available Lythrum salicaria Lowell Ahart 2007-7-27 14392 Butte On the south strand of Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  CHSC54342  Lythrum tribracteatum Lowell Ahart 1991-6-5 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles south-west of Gridley. 19 Comment
  SEINET10452850  Lythrum tribracteatum Lowell Ahart 1991-5-20 Ahart 6655 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  CHSC43620  Madia citriodora Vernon Oswald 1985-5-1 1738 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course at the Police Pistol Range. 109 Comment
  CAS-BOT-BC342722  Madia elegans Clarence R. Quick 1952-7-1 52 -130 Butte Mill Creek Road between Feather River Highway and Coyote Gap 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
  UCD134217  Madia elegans G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13078 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 35 Comment
  CAS-BOT-BC342711  Madia elegans Lowell Ahart 1981-7-7 2927 Butte Sutter Buttes Area. Along Black Bart Road, west of Forbestown. About 0.5 mile west of the Oroville-Forbestown Road 700 Comment
  CAS-BOT-BC342713  Madia elegans David D. Keck 1930-7-25 978 Butte Four miles west of Forbestown on Oroville road, eastern Butte County 760 Comment
  CHSC380  Madia elegans subsp. densifolia M. Underhill; V. Holt 1929-4-21 Butte Comment
  CHSC45692  Madia exigua Vernon Oswald 1987-4-14 2321 Butte Hwy 32 between Chico and Forest Ranch at the 17.0 mile marker. 390 Comment
  SBBG127937  Madia glomerata L. Ahart 2010-9-21 17223 Butte open area along a poor dirt rd, ca. 1 mi (air) NE of Jones Meadow, ca. 2.5 mi (air) SE of Philbrook Reservoir 1899 Comment
  SD5628  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  RSA691010  Madia gracilis subsp. gracilis L. Ahart 2003-6-30 10323 -A Butte On the southeast side of Ponderosa Way, about 2.5 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown 578 Comment
  CHSC38380  Madia subspicata Vernon Oswald 1983-4-25 383 Butte Upper Bidwell Park, Chico, on the north rim at the level of the e end of Horseshoe Lake. 152 Comment
  UC2026881  Magnolia Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17810 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC66293  Maianthemum racemosum Lowell Ahart 1996-6-5 7683 Butte About 1/10 mile north of the bridge across the South Fork of the Feather River, about 1 mile north of Golden Trout Crossing, about 7 air miles east of Feather Falls. 914 Comment
  CAS-BOT-BC510729  Maianthemum racemosum subsp. amplexicaule E. B. Copeland 1931-6-16 616 Butte Jonesville at 'the Summit 640 Comment
  CHSC113444  Maianthemum stellatum Lowell Ahart 2014-7-10 19620 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC49664  Maianthemum stellatum Vernon Oswald; Lowell Ahart 1987-7-1 3082 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  CAS-BOT-BC347384  Malacothrix floccifera Lowell Ahart 1985-6-17 5051 Butte Along the dirt road on Fields Ridge, about 4 miles south-east of Feather Falls 792 Comment
  CHSC34711  Malacothrix floccifera M. S. Taylor 1979-8-4 2183 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  CDA5038  Malva nicaeensis L. P. Janeway, B. Castro 1999-6-4 6454 Butte Sacramento Valley. Along Ord Ferry Road 1.4 km south of the bridge over the Sacramento River. Comment
  CHSC4055  Malva nicaeensis J. Wheeler 1967-5-20 25 Butte Sparse in a lot immediately west of 248 Serviss St., Durham. 47 Comment
  CHSC66671  Malvella leprosa Vernon H. Oswald; Lowell Ahart 1996-7-22 8094 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In the NE corner of Tract 1.1, Sanctuary II. 33 Comment
  CHSC107076  Marah fabacea V. Lockie; M. S. Williams 2010-3-23 Butte Chico State University Campus. Specimen found within 50' of Big Chico Creek, south of Holt Hall. 60 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
  JEPS119995  Marah fabacea Lowell Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17916 Butte Near table 17, on the north side of Centennial Avenue, Lower Bidwell Park, Chico. Comment
  CHSC52337  Marah fabacea var. agrestis Pauleen Broyles 1987-4-24 1000 Butte The Nature Conservancy Vina Plains Preserve. Comment
  CHSC30818  Marah watsonii M. S. Taylor; J. D. Jokerst 1980-4-18 2525 Butte On e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 Comment
  CHSC19932  Marrubium vulgare M. S. Taylor 1975-2-16 386 Butte Abundant ca. 2 mi s of Concow Reservoir on Jordan Hill Rd. Comment
  RSA718050  Marsilea vestita L. Ahart 2006-8-5 13088 Butte Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville 30 Comment
  CHSC94376  Marsilea vestita subsp. vestita Lowell Ahart 2006-8-5 13088 Butte On the bottom of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 250 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC3830  Matricaria discoidea R. L. Adams 1964-4-2 58 Butte Roadside W. of Chico 50 yds S. of junct. Rose Ave. and Bidwell Ave. E. side of road. Comment
  SEINET10938065  Matricaria matricarioides Mary Susan Taylor 1982-4-28 Taylor 4347 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  UCD134447  Matricaria occidentalis L. Ahart 1977-4-25 1320 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CDA30219  Medicago lupulina L. P. Janeway 2008-5-19 9365 Butte Sacramento Valley; East side Chico; east side of Highway 99 between 8th and 9th Streets, in the western part of the CalTrans Park & Ride area. 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
  JEPS119788  Medicago lupulina Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18000 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC90496  Medicago polymorpha L. Orme 1980-3-15 3 Butte West of railroad tracks, 0.8 km southwest of Chico. Edge of a cultivated field. 55 Comment
  CHSC98966  Medicago polymorpha Lowell Ahart 2008-5-12 14757 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
  RSA712795  Melica aristata L. P. Janeway 2005-6-26 8440 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  CHSC32612  Melica californica J. D. Jokerst 1980-4-7 555 Butte NE of the jct of Sweades Flat Rd and the Upper Rocky Honcut Cr (10 mi SE of Oroville). Comment
  SACT001509  Melica fugax Herbert Copeland 1929-6-12 Butte In chaparral or dry woods near north willow creek. 1500.0 Comment
  CHSC41169  Melica harfordii L. P. Janeway 1984-8-8 Butte Plumas N.F. ECOS plot 11-016. Near Day Meadow on upper New York Creek. 908 Comment
  CHSC33678  Melilotus indicus L. Ahart 1981-5-16 2797 Butte Along the edge of dirt rd on Gray-Lodge Waterfowl Mgmt Area, 11 mi sw of Gridley. 35 Comment
  CHSC38474  Melissa officinalis Vernon Oswald 1983-7-15 871 Butte Upper Bidwell Park, Chico, beside the trail along the n side of Chico Creek ca. 0.2 mi e of the end of the pavement. 91 Comment
  CHSC109759  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC110327  Mentha arvensis B. Castro; Margie Graham 2006-8-25 1608 Butte Sacramento Valley. Ca 3 mi W of Highway 99 and 2 mi S of Richvale and ca 250 ft N of Hwy 162 in Cherokee Canal.. On E side of canal abt 120 ft in from toe of E levee. 29 Comment
  HSC100741  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd., Upper Bidwell Park, ~3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  SBBG127999  Mentha arvensis L. Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd, upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 236 Comment
  CHSC43844  Mentha canadensis B. Castro 1987-8-25 207 Butte At s edge of Butte Ck ca 1/4 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 60 Comment
  CHSC94612  Mentha canadensis Lowell Ahart 2006-9-11 13285 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UCD125040  Mentha canadensis L. E. Hazeltine 1916-7-25 s.n. Butte Chico. Comment
  CHSC50998  Mentha pulegium Lowell Ahart 1990-7-22 6574 Butte Growing on the bottom of Wyman Ravine, on the east side of Lincoln Boulevard, Palermo. 45 Comment
  CHSC21248  Mentha spicata M. S. Taylor 1975-10-31 981 Butte Along creek, ca. 50 yds n of Pentz Rd, in Butte College Campus, ca. 12 mi s of Chico. 91 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
  UC1594545  Mentha spicata Lowell Ahart 1992-7-23 6831 Butte about 1.25 mi nw Oroville Dam (bottom of Oregon Gulch, n of the Thermalito Diversion Pool, Lake Oroville Recreation Area); Lake Oroville Recration Area, Oregon Gulch 91 Comment
  JEPS115650  Mentha spicata var. spicata Lowell Ahart 2009-8-13 16279 Butte Near Big Chico Creek, about 150 yards east of the diversion structure that controls Mud Creek Diversion and Lindo Channel, Chico 68 Comment
  CHSC13692  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1987-7-1 3045 Butte Cherry Hill Campground on Humboldt Rd. between Butte Meadows and Jonesville. 1438 Comment
  CHSC45299  Mentzelia dispersa Vernon Oswald; Lowell Ahart 1987-7-1 3053 Butte Scotts John Rd. 1.3 mi n of the road connecting Humboldt and Humbug Rds, ca. 2.5 mi ene of Jonesville. Scattered on a massive, dry, outcrop of metavolcanic rock on the w side of Scotts John Creek. 1828 Comment
  CHSC6643  Metasequoia glyptostroboides M. MacArthur 1968-4-16 354 Butte Ca. 40 ft. NE of Big Chico Creek, near Dining Hall, Chico State College campus. 60 Comment
  CHSC38680  Micranthes integrifolia Vernon Oswald 1983-1-29 50 Butte Upper Bidwell Park, Chico, along North Rim Trail at about the level of Horseshoe Lake. 140 Comment
  CHSC101980  Micropus californicus Diane Mastalir 1988-4-23 14 Butte 4 mi E of Hwy 70 on Palermo Rd, 4 mi S on Palermo=Honcut Hwy, 0.1 mi E on Melody Lane. 41 Comment
  SEINET10475175  Micropus californicus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4043 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
  CHSC392  Micropus californicus var. californicus E. Canfield 1904-5-7 Butte Hooker Oak field. 76 Comment
  CHSC4591  Micropus californicus var. californicus C. Glascock 1965-5-11 378 Butte Ca. 7.5 mi. ne of Chico and 3.6 mi. s of Russell Dr., S Paradise, ca. 30 yds. se of Hwy. Comment
  CHSC43704  Microsteris gracilis Vernon Oswald 1983-6-22 734 Butte Beside Calif. Hwy. 32 0.2 mi s-w of its jct. with Humbolt Rd. to Butte Meadows. 1158 Comment
  UC885736  Mimulus angustatus A. A. Heller 1915-4-12 11806 Butte near Cohasset; Sierra foothills Comment
  RSA435493  Mimulus aurantiacus var. grandiflorus Francis W. Pennell, A. A. Beetle 1940-6-5 25673 Butte route 24, 6 mi. up, along Feather River, above Oroville 91 Comment
  RSA0044692  Mimulus cardinalis A. A. Heller 1923-8-14 13813 Butte [No location data on label] Comment
  SEINET12334058  Mimulus douglasii S. C. Joslin 1978-1 10 Butte ca 6 mi NE of Oroville on Table Mountain 457 Comment
  POM5060  Mimulus glaucescens A. A. Heller, H. E. Brown 1902-5-6 s.n. Butte Berry Canyon (near Clear Creek). Comment
  RSA0087957  Mimulus glaucescens Christopher T. Ivey 2013-5-9 379 Butte Platte Mountain.Above W branch of Butte Creek. About 1.5 km S of Hwy 32/Carpenter Ridge Rd. intersection along old logging road. 880 Comment
  RSA795600  Mimulus glaucescens Christopher T. Ivey 2010-6-7 377 Butte Honey Run Road, 7.7 km northeast of bridge crossing Butte Creek, in roadside ditch. 427 Comment
  HSC32415  Mimulus guttatus Kitsy Kelly 1974-4-20 27 Butte Table Mtn. Volcanic area Comment
  JEPS115190  Mimulus guttatus Lowell Ahart 2009-6-19 15926 Butte On wet soil, drainage in meadow, about 30 yards south of the fence and about 100 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  RSA589914  Mimulus guttatus Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7206 Butte North Table Mountain, W of Cherokee Rd, N of Oroville. N side Beatson Hollow, ca. 1.9 mi. along trail from entrance on Cherokee Rd. Comment
  RSA754947  Mimulus guttatus L. Ahart 2008-5-12 14737 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 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
  RSA60037  Mimulus guttatus G. R. Campbell 1950-6-8 15486 Butte 14 miles southeast of Paradise. Comment
  SEINET8246545  Mimulus guttatus A. A. Heller 1914-6-22 11492 Butte Sierra Nevada at Chico Meadows. 1219 Comment
  POM5161  Mimulus kelloggii A. A. Heller, H. E. Brown 1902-5-6 5464 Butte Berry Canyon (near Clear Creek). Comment
  UCD96006  Mimulus kelloggii Dena Grossenbacher; Brian Green 2008-4-8 758 Butte About 0.5 miles west of main parking area at North Table Mountain Ecological Reserve located on Cherokee Road just south of junction with Derrick Road. 373 Comment
  CDA41843  Mimulus moschatus S. E. Schoenig 1998-7-5 98 -77 Butte East roadside of Highway 32, ca. 1 mile northeast of road Forest Ranch. Comment
  SEINET7067156  Mimulus tilingii A. G. Vestal 1947-4-30 s.n. Butte Lava rocks at the summit of Table Mountain the point of arival. Road to Cherokee 9, north of Oroville. Coordinate datum: NAD27. UTM Zone 10, 634731mE, 4426208mN. 351 Comment
  UC129114  Mimulus torreyi Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CAS-BOT-BC174596  Minuartia californica Ahart; Jokerst 1985-3-24 4868 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill 550 Comment
  CHSC10733  Minuartia californica Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 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
  HSC93374  Minuartia californica L. Ahart 1995-5-30 7588 Butte N Table Mtn., about 7 mi. N of Oroville, about 2 mi. NW of Cherokee Rd., 1/10 mi. SE of the reservoir. 305 Comment
  SEINET11933240  Minuartia californica Alumbaugh 1984-1 8 Butte 6.4 mi E of hwy 99 and ca 100 yds N of Skyway, 8.5 mi E of Chico 387 Comment
  HSC32406  Minuartia douglasii Gary S. Lester 1974-4-20 106 Butte Along Pentz Rd. 300 yds. S of intersection with Clark Rd. 76 Comment
  UC397061  Minuartia douglasii Edith A. Wilkins 1929-4-21 Butte Bidwell Bar Comment
  SEINET11933236  Minuartia douglasii S. E. Bigbee 1984-1 62 Butte Ca 400 yds W of Cherkee Rd on Table Mt., ca 12 mi N of Oroville 396 Comment
  POM219016  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville. 1500 Comment
  CHSC46351  Moehringia macrophylla Lowell Ahart 1989-5-29 6322 Butte Near the dirt road, just west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  CHSC40638  Mollugo verticillata Lowell Ahart 1985-10-12 5204 Butte Along the boat ramp, at the end of Nelson Bar Road, about 1 mile south of Kunkle Reservoir, about 3 miles south of Paradise. 301 Comment
  CAS-BOT-BC435070  Mollugo verticillata Lowell Ahart 1984-8-19 4787 Butte North of the state burrow area, west of Pacific Heights Road, about 5 miles south-west of Oroville 40 Comment
  SEINET10965504  Mollugo verticillata Lowell Ahart 1984-8-19 Ahart 4787 Butte West of Pacific Heights Road, about 5 miles south-west of Oroville. Comment
  SEINET10865494  Monardella Mary Susan Taylor 1978-7-19 Taylor 1751 Butte On W side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 4 mi E of Jonesville. 1829 Comment
  CAS-BOT-BC219949  Monardella breweri subsp. lanceolata A. A. Heller 1914-7-24 11628 Butte Near Forest Ranch 731 Comment
  CHSC62559  Monardella breweri subsp. lanceolata L. P. Janeway 1993-6-15 4388 Butte Plumas National Forest. Southwest side of Ponderosa Dam on South Fork Feather River. Bank opposite the Diversion Building, ca 50 ft south of the dam. 298 Comment
  UC175380  Monardella odoratissima subsp. glauca A. A. Heller 1913-7-7 10792 Butte near Stirling 1036 Comment
  RSA107826  Monardella odoratissima subsp. pallida L. S. Rose 1955-6-15 55105 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  CHSC117009  Monardella sheltonii Lowell Ahart 2016-6-29 21051 A Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  CHSC2422  Monardella sheltonii R. Carter 1965-6-15 227 Butte Found e of Paradise on Honey Run Rd., 2.4 mi. from intersection with Skyway on S side of road. 472 Comment
  CHSC43830  Monardella sheltonii L. P. Janeway 1987-5-20 2062 Butte SW-facing rocky cutbank above Dark Cyn Rd 1.4 mi south of hwy 70. 510 Comment
  CHSC97320  Monardella sheltonii L. P. Janeway 2007-6-26 9075 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 28 along the southern end of Swayne Hill; about 1.7 air km northeast of the confluence of French Creek at the North Fork Feather River arm of Lake Oroville. 750 Comment
  JEPS115268  Monardella sheltonii Lowell Ahart 2009-5-30 15982 Butte Open area west of the Guardian Rock Trail, about 60 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  RSA754450  Monardella sheltonii L. Ahart 2009-6-3 15822 Butte W side of Ten Mile House Road, about 100-200 yards NW of the table at the old homestead, Upper Bidwell Park, about 3/4 air miles SW of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 232 Comment
  RSA796042  Monardella sheltonii L. P. Janeway 2012-6-23 10888 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Bachelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  RSA32914  Monardella sheltonii A. A. Heller 1923-6-9 13742 Butte Oroville Comment
  CAS-BOT-BC220309  Monardella venosa L. P. Janeway; B. Castro 1992-5-16 4187 Butte Small canyon between Hamlin Canyon and the unnamed canyon on the southeast side of Neal Road opposite the entrance to the Butte County Land Fill; ca 1 1/2 mi northeast of Hwy 99 73 Comment
  CHSC68011  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar, Middle Fork Feather River, on canyon slope adjacent to dirt road at N apex of bend in road. 579 Comment
  UC2062462  Monochoria vaginalis Barbara Ertter with Vern Oswald & Lowell Ahart 1998-10-22 16443 Butte Rice Experiment State NW of Biggs, drained field at NE corner of Hamilton & Riceton roads. Comment
  UC1564772  Monolepis nuttalliana V. Oswald and L. Ahart 1989-8-22 3959 Butte ca. 3.5 mi. (air) s.e. Jonesville (Butte Creek House Meadow on e. side of Humbug Rd., at the corral); Butte Creek House Meadow 1767 Comment
  CHSC45392  Montia chamissoi Vernon Oswald 1983-8-4 957 Butte Near Humboldt Rd. 3.5 mi n-e of Butte Meadows. Growing in a sandy, wet spot along Butte Creek. 1414 Comment
  CHSC42480  Montia fontana subsp. amporitana Lowell Ahart 1987-5-12 5631 Butte On damp bare broken black lava, in a seep, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC61328  Montia fontana subsp. amporitana Lowell Ahart 1993-7-31 7142 Butte On wet moss and in shallow water of a small seep (stream), on the west side of a poor dirt road that leads to a camp, just west of where the dirt road crosses Big Kimshew Creek, about 2 miles south-east of Bald Mountain. 1493 Comment
  CHSC109094  Morus alba Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17860 Butte On the south side of Big Chico Creek, east of the Deer Pen, south of Tables 11 , Lower Bidwell Park, Chico. 65 Comment
  CHSC42437  Muhlenbergia filiformis Lowell Ahart 1987-5-6 5558 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
  UC573928  Muhlenbergia filiformis H. S. Yates 1936-8-13 6111 Butte 2 1/2 mi sse Butte Meadows; Paynes Creek Quadrangle Comment
  CHSC110396  Muhlenbergia mexicana Lowell Ahart 2012-9-28 18471 Butte Gravel bar in the middle of Big Chico Creek, about 30 yards east of the freeway, Lower Bidwell Park, Chico. 65 Comment
  CHSC38834  Muhlenbergia mexicana Vernon Oswald 1983-9-4 1035 Butte Upper Bidwell Park, Chico, on the floodplain on the s side of Chico Creek ca. 500 ft upstream from Five Mile Recreation Area. 85 Comment
  CHSC30882  Myosurus apetalus var. borealis J. D. Jokerst 1979-4-6 1180 Butte On bottom of vernal pools. Top of North Table Mt, ca. .75 mi N of Cherokee Rd. 396 Comment
  CAS-BOT-BC83262  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  CAS-BOT-BC83266  Myosurus minimus Lowell Ahart 1981-4-6 2746 Butte Southeast of the Gray Lodge Headquarters, ca. 8 miles southwest of Gridley. 35 Comment
  CHSC33701  Myosurus sessilis L. Ahart 1981-4-6 2747 Butte SE of Gray Lodge Waterfowl Mgmt Area HQ, ca. 8 mi sw of Gridley. 35 Comment
  SEINET10452818  Myriophyllum exalbescens Mary Susan Taylor 1982-5-22 Taylor 4497 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
  CHSC80653  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte 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 southeast of Oroville. 38 Comment
  JEPS102315  Myriophyllum spicatum Lowell Ahart 2001-6-3 8749 Butte about 1 mi N and 2 3/4 mi E of Honcut (Peter Ahart Ranch, W side of North Honcut Creek) 38 Comment
  CHSC38773  Narcissus pseudonarcissus Vernon Oswald 1983-2-14 69 Butte Upper Bidwell Park, Chico, about 50 ft e of Parking Area G (0.1 mi w of the power lines). 94 Comment
  SEINET10871965  Narthecium californicum Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City. Comment
  CHSC27863  Nassella cernua A. K. Bos 1978-4-24 20 Butte Ca. 10 ft s of Rd, 2.6 mi e on Humbug Rd, 6.6 mi se from Chico. Comment
  CHSC34984  Navarretia divaricata R. A. Schlising; R. Banchero 1980-6-17 3739 Butte N of Magalia at Old Coutelenc Site, along Coutelenc Road, 1.7 mi S of jct with Skyway at Lovelock. Roadside. Comment
  CHSC48655  Navarretia divaricata Vernon Oswald 1983-7-6 834 Butte Beside Calif. Hwy. 32, 0.2 mi s-w of its jct. with Humboldt Rd. to Butte Meadows. At the edge of the road. 1188 Comment
  CHSC30685  Navarretia filicaulis M. S. Taylor; J. D. Jokerst, L. Ahart 1979-6-12 2297 Butte Off dirt rd leading from Magalia serpentine to Feather River, rd connects to Coutelenc Rd and Skyway jct. 670 Comment
  CHSC45719  Navarretia filicaulis K. R. Stern 1979-6-29 Butte Parkhill, 1.5 mi S of Jarbo Gap; Jas. Moak property. 585 Comment
  JEPS115870  Navarretia filicaulis Lowell Ahart 2009-6-30 15967 Butte Along the Guardian Rock Trail, about 1/4 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  UCD48400  Navarretia filicaulis M. S. Taylor; J. D. 1979-6-12 2297 Butte Off dirt rd from Magalia serpentine area to Feather River, ca. 0.5 mi up from the river. 670 Comment
  CHSC84275  Navarretia heterandra Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10216 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
  UC70271  Navarretia heterandra R. F. Hoover 1937-5-19 2239 Butte 10 mi nw Chico ((= near Cana)) Comment
  CHSC116720  Navarretia intertexta Lowell Ahart 2016-5-24 20864 Butte On the bottom of a large drainage, about 50 yards north of the ditch, about 150 yards south of La Porte Road, about 1/4 mile southwest of the intersection of La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  CHSC91267  Navarretia intertexta subsp. intertexta Lowell Ahart 2005-6-6 11997 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 51 Comment
  CHSC26827  Navarretia leucocephala M. S. Taylor 1978-5-7 1596 Butte In vernal pools, on e side of Williams Rd on Butte College campus, ca. 1/4 mi n of Pentz Rd, ca. 15 mi s of Chico. 30 Comment
  CHSC7090  Navarretia leucocephala R. Smallwood 1969-5-1 3 Butte 20 yds. e of main entrance to Chico Municipal Airport, on Cohasset Highway 3 mi ne of Chico. 36 Comment
  CAS-BOT-BC230334  Navarretia leucocephala Herbert L. Mason 1941-4-6 12410 Butte Near junction of Chico-Paradise Road, 3 miles S of Chico Comment
  SEINET10969163  Navarretia leucocephala Mary Susan Taylor 1974-4-20 Taylor 182 Butte On W side of Richardson Springs Rd, ca. 2 mi NE of Cohasset Rd, ca. 6 mi N of Chico. Comment
  CAS-BOT-BC230475  Navarretia nigelliformis var. nigelliformis David D. Keck 1933-5-30 2415 Butte 7 miles S of Chico on road to Oroville, Sacramento Plains Comment
  SEINET10496832  Navarretia propinqua Mary Susan Taylor 1978-9-9 Taylor 1917 Butte Along Bull Run Road, ca. 10-11 mi S of Butte Meadows in northern portion of the county; Yellow Pine Forest. 1463 Comment
  CAS-BOT-BC233624  Navarretia pubescens A. A. Heller; H. E. Brown 1902-5-7 5477 Butte Berry Canyon, near Clear Creek Comment
  CHSC52110  Navarretia pubescens D. H. Ikeda 1980-5-26 388 Butte 1.4 mi from junction of Lunt Rd. and Nelson-Bar Rd. Comment
  UC856881  Navarretia pubescens A. A. Heller 1914-5-4 11357 Butte 8 mi n Oroville Comment
  UCD37444  Navarretia pubescens Beecher Crampton 1960-6-15 5624 Butte Butte County, 10 miles southeast of central Chico. Comment
  CAS-BOT-BC232627  Navarretia pubescens Lewis S. Rose 1963-6-5 6314 Butte 3 miles W of Palermo 45 Comment
  CHSC36718  Navarretia tagetina D. H. Ikeda 1980-5-11 359 Butte At Richvale vernal pools. 20 mi s of Chico on w side of Hwy. 99. Comment
  CHSC91120  Navarretia tagetina Lowell Ahart 2005-5-28 11817 Butte Pasture, on the south side of Nelson Avenue, east of the bridge across the Thermalito Forebay, Thermalito. 67 Comment
  UC963768  Navarretia tagetina H. L. Mason 1927-5-9 3707 Butte 12 mi w Oroville Comment
  UC726894  Nemophila heterophylla A. A. Heller 1940-4-28 15563 Butte opposite the Golf Links (on Big Chico Creek, e of Chico); e of Chico, Big Chico Creek, oppos Golf Links Comment
  UC126923  Nemophila heterophylla H. M. Hall 1908-4-5 8025 Butte near Oroville (in the foothills of the Sierra Nevada); foothills Sierra Nevada, nar Oroville 150 Comment
  CHSC4019  Nemophila menziesii E. P. Parreno 1967-4-12 Butte Honey Run Road ca. 7 yards after the bridge beside the road. Comment
  CHSC115293  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte On the bottom of the stream, about 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  UC107250  Nemophila pedunculata H. E. Brown Mar 3 1897-Mar 22 1897 173 Butte near Clear Creek; ; Clear Creek, Butte Co. 53 Comment
  UC398702  Nemophila pedunculata A. A. Heller 1922-3-19 13606 Butte near Clear Creek; near Clear Creek Comment
  RSA325122  Nemophila spatulata M. S. Taylor 1981-5-22 3794 Butte Ridge running southeast from Flea Mountain, both sides of Flea Mountain Road, ca. 0.25 air miles east of Flea Mountain, ca. 5 air miles east of Magalia. 1220 Comment
  UC985680  Nuphar lutea subsp. polysepala Herbert L. Mason, Verne Grant 1946-8-14 13029 Butte Canal near big pond on Sacramento Outing Club, Butte Sink Butte Sink; , Sacramento Outing Club Comment
  CHSC29104  Odontostomum hartwegii M. S. Taylor 1980-4-27 2568 Butte On n side of Humbug Rd, ca. 1/2 mi upstream from Honey Run Covered Bridge, ca. 7 mi e of Chico. 121 Comment
  JEPS119512  Oemleria cerasiformis Lowell Ahart 2012-3-2 17770 Butte About 30 yards south of Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles northeast of Chico. Comment
  CDA34717  Olea europaea L. Ahart 2010-6-1 16750 Butte North side of Guardian's Trail, about 100 yards east of the end of Centennial Avenue, Upper Bidwell Park, about 1/2 mile east of Chico Canyon Road. Comment
  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
  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
  CAS-BOT-BC499845  Orobanche fasciculata C. R. Quick 1951-6-5 51 -89 Butte 13 mi from Chico on Deer Creek Road Comment
  CDA36804  Orobanche fasciculata D. B. Joley 1972-5-9 Butte Hwy. 32, approx. 7 miles north of Chico. 0 Comment
  CAS-BOT-BC500244  Orobanche uniflora subsp. occidentalis Lowell Ahart 1980-5-29 2359 Butte Sierra Nevada: 5 mi NE of Mountain House 1100 Comment
  CAS-BOT-BC254367  Oryza sativa Willis H. Wheeler 1945-10-12 s.n. Butte Richvale 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
  CHSC42635  Osmorhiza chilensis Vernon Oswald 1985-6-17 1840 Butte Beside a logging road 0.1 mi e of the trailhead to Feather Falls. 768 Comment
  SEINET519222  Osmorhiza depauperata V. H. Oswald 1998-7-8 9248 Butte Colby Mt. Lookout Rd. (26N57) 0.9 mi N of Humboldt Rd. at Jonesville. 1561 Comment
  UCD138167  Ottelia alismoides T. C. Fuller 1977-9-20 2334 Butte west of Biggs Rice Experiment Station, east of Cherokee Canal, approximately 0.5 km south of Highway 162. Comment
  CHSC3308  Oxalis rubra M. Gregg 1966-4-13 67 Butte Corner of 20th and Salem Streets in Chico. In flower garden. Comment
  CHSC33965  Oxypolis occidentalis M. S. Taylor; L. Ahart 1981-8-15 4193 Butte N side of Coon Hollw Rd (26N74), 1.2 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City. 1676 Comment
  JEPS122162  Oxypolis occidentalis Lowell Ahart 2014-8-13 19703 Butte About 110 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC99562  Packera eurycephala var. lewisrosei L. P. Janeway 2008-5-26 9388 Butte Northern High Sierra Nevada. Saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1079 Comment
  UC703040  Packera eurycephala var. lewisrosei L. S. Rose 1939-6-7 39247 Butte 3 mi s of Pulga; North Fork of Feather River; North Fork of Feather River, 3 miles S of Pulga, Butte Co. Comment
  UC1564780  Packera subnuda V. Oswald and L. Ahart 1989-6-27 3834 Butte 3.3 air mi se Jonesville (Humbug Rd at Butte Creek House); Butte Creek 1767 Comment
  CAS-BOT-BC10502  Paeonia brownii A. A. Heller 1915-6-11 12046 Butte Jonesville in the Sierra Nevada 1676 Comment
  CHSC28559  Panicum acuminatum var. acuminatum M. S. Taylor 1978-7-21 1839 Butte Big Bald Rock, ca. 2 mi e of Lake Madrone. 997 Comment
  UC596487  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CAS-BOT-BC253704  Panicum capillare A. A. Heller 1916-9-30 12665 Butte S [5?] miles N of Oroville Comment
  UCD89813  Panicum capillare subsp. hillmanii W. H. McHenry 1969-11-10 s.n. Butte Durham. Comment
  UCD89717  Panicum dichotomiflorum E. Wilson 1934-9-3 s.n. Butte Biggs Rice Station. Comment
  CHSC43941  Papaver somniferum Vernon Oswald 1988-4-29 3290 Butte Meridian Rd., 0.4 mi e and then n of Hwy 99. On the edge of the road. 57 Comment
  CHSC90963  Parentucellia viscosa L. P. Janeway; M. Brown, S. Mackey Hillaire, J. Tuitele-Lewis 2005-5-4 8381 Butte Northern Sierra Nevada Foothills. Along the north edge of Hwy 70 0.5 km east of Cherokee Road. 299 Comment
  CHSC95059  Parentucellia viscosa L. P. Janeway 2006-5-4 8574 Butte Northern High Sierra Nevada Foothills. Abundant on the slopes above the east side of Pentz Road 0.5 km north of Durham-Pentz Road. 201 Comment
  CHSC8569  Parthenocissus quinquefolia M. MacArthur 1968-6-12 369 Butte On wall on N side of LS building, Chico State College campus. 60 Comment
  CHSC38840  Paspalum distichum Vernon Oswald 1983-6-27 776 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 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
  UC1037265  Paspalum distichum E. Wilson 1934-9-3 70 Butte Biggs Rice Station Comment
  SEINET10453506  Paxistima myrsinites Lowell Ahart 1983-3-28 Ahart 3909 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
  CHSC61206  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte Oroville Wildlife Area, south of the Feather River, about 3 1/2 miles (air) south of Thermalito. 36 Comment
  CHSC108988  Pectocarya pusilla Lowell Ahart 2012-4-30 17936 Butte On the east side of Guardian Trail, about 300 yards north of Humboldt Trail, north of Bloody Pin Trail, about 1/8 mile west of Highway 32, about 8 miles northeast of Chico, south part of Upper Bidwell Park. 361 Comment
  UC1586598  Pectocarya pusilla Vernon H. Oswald and Lowell Ahart 1991-5-13 4580 Butte opposite spillway (between Canyon Dr and Oroville Dam Blvd, Dan Beebe Trail); Lake Oroville Recreation Area 213 Comment
  UCR133597  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  CHSC64225  Pedicularis densiflora Robert C. Hill 1990-4-12 21 Butte 100 ft. s of Feather Falls, 25 mi ne of Oroville. 914 Comment
  CHSC11888  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville. 1550 Comment
  SD4775  Pedicularis semibarbata E. B. Copeland 1931-6-21 688 Butte Jonesville, in dry woods 1550 Comment
  CDA30220  Pellaea andromedifolia L. Ahart 2009-5-3 15781 Butte North of a broad open drainage in oak woodland, about 100 yards north of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) west of Highway 32, about 10 miles northeast of Chico. Comment
  HSC66079  Pellaea andromedifolia M. S. Taylor 1980-3-30 2411 Butte Salmon hole, upper Bidwell Park, Chico 244 Comment
  CAS-BOT-BC69333  Pellaea brachyptera E. B. Copeland 1930-7-7 401 Butte Jonesville 1700 Comment
  JEPS116127  Pellaea mucronata var. mucronata Lowell Ahart 2009-4-22 15601 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
  HSC23313  Pellaea mucronata var. mucronata D. C. Polen 1971-4-8 20 Butte 40 mi. N on Skyway, 7.4 mi. E of Skyway's jct. with 99E, Chico 274 Comment
  RSA4117  Penstemon gracilentus E. B. Copeland 1930-7-6 457 Butte Above Jonesville 1950 Comment
  POM195767  Penstemon heterophyllus subsp. purdyi A. A. Heller 1926-4-21 13926 Butte Along Rock Creek, 7 miles N of Chico. (Type collected probably in the vicinity of Chico). Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  SEINET10548022  Penstemon laetus Mary Susan Taylor 1980-7-6 Taylor 3078 A Butte T25N R3E ne sec 11, Butte Meadows quad; on S side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi W of Butte Meadows Forestry Station. With R.A. Schlising. 1341 Comment
  CHSC44714  Penstemon laetus var. leptosepalus R. Banchero 1980-7-7 281 Butte Along Lumpkin Rd 3.5 mi NE of the Enterprise Bridge, ca 3.0 mi SW of the town of Feather Falls. 633 Comment
  JEPS6628  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte along the Feather River Highway 25 mi from Oroville; along the Feather River Highway 25 mi from Oroville Comment
  UC423640  Penstemon laetus var. leptosepalus David D. Keck 1930-7-24 972 Butte near Chaparral; Sierra Nevada 1645 Comment
  SD4591  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte Above Jonesville, rocky north slope 1900 Comment
  UC463015  Penstemon newberryi var. newberryi E. B. Copeland 1931-6-19 Butte Big Summit , Big Summit (Jonesville) 2100 Comment
  CHSC10590  Pentagramma pallida Lowell Ahart 1966-2-20 Butte Sam's Ranch, Honcut. 60 Comment
  RSA0087540  Pentagramma pallida Mrs. R. M. Austin 1883-05 8 Butte Iron Canyon. Comment
  CHSC28894  Pentagramma triangularis M. S. Taylor 1980-3-1 2348 Butte On the se facing bluffs overlooking Hamlin Canyon, ca. 1/4 se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 Comment
  CHSC46035  Pentagramma triangularis subsp. semipallida Lowell Ahart 1978-4-19 1655 Butte Along the edge of the Feather Falls trail, about 4 miles north of Feather Falls. 548 Comment
  CHSC90139  Pentagramma triangularis subsp. triangularis C. J. Kalberg 1983-4-11 17 Butte Upper Bidwell Park, Chico, about 3.2 mi northeast of junction of Manzanita and Wildwood Ave., 500 yds north of Wildwood Ave. 243 Comment
  JEPS106113  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  SEINET13095371  Perideridia bolanderi subsp. involucrata Unknown 1967-6-21 3778 Butte Road to Magalia 1.8 miles N of Pentz Store. 137 Comment
  CHSC108170  Perideridia kelloggii L. P. Janeway 2011-8-18 10664 Butte Northern High Sierra Nevada. Plumas National Forest; eastern slope of Bloomer Hill, 1.0 km east of the top. East-sloping springtime meadow (now dry). 701 Comment
  CHSC113466  Perideridia lemmonii Lowell Ahart 2014-7-13 19667 Butte East part of a large wet meadow (some bog), about 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET12121858  Perideridia oregana Unknown 1985-1 5061 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yards S of dirt road 975 Comment
  CHSC40237  Perideridia parishii subsp. latifolia Vernon Oswald 1985-8-4 1924 Butte Humbug Rd. 0.9 mi n of Humboldt-Humbug connector road. 1926 Comment
  CHSC66897  Persicaria hydropiper Vernon H. Oswald 1996-10-22 8301 Butte Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CHSC76288  Persicaria hydropiper Lowell Ahart 1999-9-21 8271 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
  SBBG120023  Persicaria lapathifolia L. Ahart 2006-9-11 13289 Butte S edge of the N Fork of the Feather River, N side of Hwy 70, ca. 1/8 mi W of the Poe Dam, ca. 0.75 mi NE of Pulga 431 Comment
  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
  CAS-BOT-BC523829  Persicaria pensylvanica Lowell Ahart 1986-11-14 5457 Butte 0.1 mi south of the clay burrow for Oroville Dam, 0.25 mi E of Larkin Rd, about 6 mi SW of Oroville 36 Comment
  CAS-BOT-BC419321  Persicaria punctata A. A. Heller 1914-7-15 11578 Butte Hills 8 miles north of Oroville Comment
  CHSC37286  Petrorhagia dubia M. S. Taylor 1982-5-2 4382 Butte Along Truex Rd ca. 1/2 mi w of its jct with Hwy 70, ca. 10 air mi n of Oroville. Comment
  SJSU5411  Petrorhagia dubia C. D. Duncan 1963-5-4 Butte Honeyrun Rd between Chico & Paradise 487 Comment
  CHSC31964  Phacelia distans J. D. Jokerst 1979-4-20 1213 Butte Top of North Table Mt, W edge of mountain. 396 Comment
  CHSC101318  Phacelia egena Lowell Ahart 2009-4-22 15580 Butte West side of the 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
  JEPS28427  Phacelia heterophylla subsp. virgata L. R. Heckard with R. Bacigalupi 1962-6-1 1307 Butte on Honey Run rd 0.4 mi below main street of Paradise 487 Comment
  UC600779  Phacelia mutabilis E. B. Copeland July 1929 Butte wash by Butte Creek; Jonesville Comment
  SD4079  Phacelia racemosa E. B. Copeland 11-13 Jul 1931 Butte Jonesville, on bare stony ridge between Jones and North Willow Creeks. 1700 Comment
  CAS-BOT-BC134035  Phacelia ramosissima var. ramosissima Charles Piper Smith 1914-7-2 2905 Butte Chico Creek foothills Comment
  CAS-BOT-BC259044  Phalaris lemmonii Lowell Ahart 1980-5-10 2237 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC46440  Phalaris paradoxa Lowell Ahart 1989-5-23 6255 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor. 213 Comment
  CHSC45109  Phleum alpinum Lowell Ahart 1988-9-4 6185 Butte On the bottom of Big Kimshew Creek, the creek crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  UC600759  Phleum pratense H. F. Copeland 1932-7-22 Butte Jonesville Comment
  SEINET10507566  Phleum pratense Mary Susan Taylor 1978-7-21 Taylor 1814 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
  SEINET10496850  Phlox diffusa Mary Susan Taylor 1978-7-18 Taylor 1713 Butte On E side of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line; Red Fir Forest. 2134 Comment
  CHSC34716  Phlox speciosa subsp. occidentalis M. S. Taylor 1981-5-21 3779 Butte E side of Concow Rd, ca. 0.3 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville. 975 Comment
  CAS-BOT-BC135097  Phoradendron juniperinum Flower Shaw 1928-4-1 s.n. Butte Cherokee School Comment
  SEINET12230385  Phoradendron juniperinum L. Ahart, Ahart, P. 1985-1 5169 Butte about 2 mi W of Sly Creek Reservoir, E of the intersection of Golden Trout Crossing road on Reville 914 Comment
  SEINET5740882 Image available Phoradendron juniperinum Lowell Ahart, Peter Ahart 1985-1 5169 Butte About 2 miles W of Sly Creek Reservoir, E of the intersection of Golden Trout Crossing road on Reville Ridge.; Sly Creek Reservoir 914 Comment
  CHSC78908  Phoradendron libocedri Lowell Ahart 2000-9-27 8696 Butte About 1/4 mile southeast of Little Bald Rock, about 1 1/4 miles (air) northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  RSA325023  Phoradendron libocedri M. S. Taylor 1976-2-22 997 Butte Ca 2 miles N of Cohasset, ca 10 ft E of Cohasset Hwy. 762 Comment
  JEPS124271  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2015-11-18 20667 Butte About 1 1/2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  SEINET10546754  Physalis angulata var. lancifolia Mary Susan Taylor 1978-9-8 Taylor 1901 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC113119  Physalis lancifolia Lowell Ahart 2013-11-18 19285 Butte Below the high water line of Lake Oroville, about 150 yards northeast of the boat ramp at the end of Stringtown Road, about 50 yards north of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC36431  Physocarpus capitatus Robert A. Schlising; Coleta Lawler 1981-8-8 4192 Butte E of Paradise at Concow Reservoir. Roadside. Comment
  CDA34619  Phytolacca americana L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15435 Butte On the south side of the gravel road and Big Chico Creek, about 30 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. Comment
  CHSC76344  Phytolacca americana L. P. Janeway 1999-7-12 6502 Butte Campus of California State University, Chico; north side of Big Chico Creek in weedy landscaping on the north side of Holt Hall. 59 Comment
  JEPS106185  Phytolacca americana Lowell Ahart 2004-9-28 11405 Butte Fallow field, on the south side of the Oroville Chico Highway, west of Butte Creek, about 1 1/8 miles southeast of the Midway, about 2 1/8 miles (air) northeast of Durham, about 3 1/2 miles (air) southeast of Chico 57 Comment
  CHSC60938  Pilularia americana Lowell Ahart 1993-5-17 6955 Butte On the west side of Dunstone Road, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  SEINET10530357  Pilularia americana Mary Susan Taylor 1978-5-7 Taylor 1605 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  UCD134797  Pinus monticola E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville. 2000 Comment
  CHSC3642  Pinus sabiniana Alice L. Stoll 1966-2-14 5 Butte 9 miles N.E. of Chico in Upper Bidwell Park. 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
  CHSC68710  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Below the cement of the low water crossing, Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC109060  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC20534  Pittosporum tobira Pamela Caldwell 1972-5-7 Butte Behind President's Mansion across roadway from CSUC. Comment
  SEINET10529816  Pityrogramma pallida Mary Susan Taylor 1980-3-30 Taylor 2413 Butte Upper Bidwell Park, Chico. 244 Comment
  SEINET10529819  Pityrogramma triangularis Mary Susan Taylor 1981-3-24 Taylor 3439 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
  SEINET10898354  Plagiobothrys Mary Susan Taylor 1981-5-7 Taylor 3640 Butte T20N R6E se/se sec 25, Clipper Mills quad. Along spur rd, ca. 0.5 mi SE of its jct with Fields Ridge Rd-20N24.6, ca. 3 air mi S of Feather Falls community. Yellow Pine Forest; 3200 ft. 975 Comment
  RSA20871  Plagiobothrys austiniae C. B. Wolf 1937-3-29 8332 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  RSA589926  Plagiobothrys austiniae Michael A. Vincent, Robert M. Rhode, Jim Snowden 1996-3-29 7244 Butte N Table Mt. W of Cherokee Rd, N of Oroville. Uphill from entrance on Cherokee Rd. Comment
  CHSC47996  Plagiobothrys bracteatus Vernon Oswald 1984-5-13 1185 Butte Calif. Hwy 32 at the second bridge w of Nord-Hamilton-Cana Hwy. In a slough. 39 Comment
  CHSC103936  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  SBBG128020  Plagiobothrys fulvus L. Ahart 2010-5-16 16684 Butte ca. 1/4 mi S of the parking area, N Table Mtn, ca. 4.5 mi NE of Oroville 371 Comment
  CHSC40760  Plagiobothrys fulvus var. campestris Ahart; Jokerst 1985-5-10 4948 Butte On the sides of the east branch of Potter Ravine, about 2 1/4 miles north of Oroville Dam. 320 Comment
  UC1442621  Plagiobothrys glyptocarpus Lowell Ahart 1979-4-6 Butte 3 mi nw Bangor 110 Comment
  CHSC26801  Plagiobothrys greenei M. S. Taylor 1978-4-14 1567 Butte In vernal pools, on e side of Williams Rd. ca. 1/4 mi n of Pentz Rd, on Butte College Campus, ca. 15 mi s of Chico. 30 Comment
  CHSC82259  Plagiobothrys greenei Lowell Ahart 2002-4-24 9526 Butte Vernal pools and swales, in a field, on the east side of Lone Tree Road, about 1 1/8 miles north of Cox Lane, about 3 miles (air) southwest of Palermo, about 7 miles (air) south of Oroville. 35 Comment
  CHSC46761  Plagiobothrys nothofulvus Lowell Ahart 1980-4-7 2072 Butte On the north side of Swedes Flat Road, about 1 mile east of the Bangor Oroville Highway, north of Bangor. 304 Comment
  JEPS117199  Plagiobothrys nothofulvus Lowell Ahart 2010-5-14 16672 Butte 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 Comment
  JEPS124228  Plagiobothrys nothofulvus Lowell Ahart 2015-3-27 19969 Butte About 1/4 mile southwest of Coal Canyon Falls, about 1 1/2 miles (air) northwest of the improved parking area, North Table Mountain, about 8 miles north Oroville. Comment
  CHSC46766  Plagiobothrys scriptus Lowell Ahart 1977-4-9 1276 Butte Along the edges of a small swale, Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1537691  Plagiobothrys stipitatus Gordon H. True Jr. 1936-3-26 377 Butte Gray Lodge Refuge 22 Comment
  UC718179  Plagiobothrys stipitatus Carl B. Wolf 1937-5-14 Butte 5 mi nw Chico (Hamilton City Road); Sacramento Valley 45 Comment
  HSC100801  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte ~100 yd. W of the fence, ~1/2 mi. S of the improved parking area and Cherokee Rd., N Table Mountain, 5 1/2 (air) mi. NE of Oroville. 399 Comment
  JEPS117190  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-9 16786 Butte On Damp to wet dark soil, bottom of a small drainage, open grassy pasture field, about 100 yards west of the fence, about 1/2 mile south of the improved parking area and Cherokee Road, North Table Mountain, about 5 1/2 miles (air) northeast of Oroville 398 Comment
  UCD73012  Plagiobothrys stipitatus var. stipitatus 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
  CHSC29276  Plagiobothrys tenellus R. A. Schlising 1980-4-7 3557 Butte 2.8 mi E of Bangor Highway, on Swedes Flat Road. 365 Comment
  CHSC35324  Plagiobothrys tenellus M. S. Taylor; K. Tharp 1982-4-8 4290 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  CHSC38279  Plagiobothrys tenellus Vernon Oswald 1983-3-6 122 Butte Upper Bidwell Park, Chico, near the top of the north slope 0.2 mi e of the end of the North Rim Trail. 390 Comment
  UC66153  Plagiobothrys tenellus A. A. Heller and H. E. Brown 1902-5-9 5509 Butte near Clear Creek; Berry Canyon Comment
  CHSC113298  Planodes virginica Lowell Ahart 2014-4-9 19325 Butte Rice field, near the pump, on the north side of Colusa Highway, about 4/10 of a mile east of the intersection of Pennington Road and Colusa Highway, about 5 1/2 miles west of Gridley. 22 Comment
  CHSC96378  Planodes virginica Lowell Ahart 2007-3-7 13586 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/10 miles east of Honcut, about 12 miles south of Oroville. 31 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
  JEPS119791  Plantago elongata Lowell Ahart 2012-5-4 17995 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
  CHSC108795  Plantago erecta Lowell Ahart 2012-4-9 17851 Butte On the north side of South Rim Trail, west of the power lines, Upper Bidwell Park, about 1 mile (air) northeast of Chico. 143 Comment
  CHSC24157  Plantago erecta B. Bunge 1976-4-22 20 Butte Ca 100 yds s of Skyway, ca 8 mi ese of Chico. 259 Comment
  CHSC3814  Plantago erecta L. E. Dunkel 1965-9-3 5 Butte Ca. 60 yards e of entrance gate at Chico Municipal Airport. 30 Comment
  UCSC008326  Plantago erecta Lowell Ahart 2012-4-9 17838 Butte Northwest of South Rim Trail, south part of Upper Bidwell Park, about 2-1/4 (air) miles northeast of Chico. 142 Comment
  UCSB50205  Plantago erecta Gray, John 1976-4-10 Butte Along roadside; 4 miles south of Oroville on Highway 70; T19N R3E Sec. 25, SE quarter 30 Comment
  CHSC1221  Plantago lanceolata V. Holt 1947-6-1 Butte Magalia. 731 Comment
  CHSC41313  Plantago lanceolata S. C. Morey 1983-7-22 549 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  SEINET10499809  Plantago lanceolata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4064 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  UC1609272  Platanthera leucostachys Lowell Ahart 1993-6-26 7006 Butte about 0.25 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CHSC109624  Platanus racemosa Lowell Ahart 2012-5-17 18074 Butte On the west side of a horse trail, about 40 yards north of Big Chico Creek, south of the southwest corner of the old walnut orchard, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. 76 Comment
  JEPS119844  Plectritis ciliosa Lowell Ahart 2012-3-23 17791 Butte About 200 yards east of Big Chico Creek, about 200 yards west of Ten Mile House Road, below and north of the old homestead, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS15251  Plectritis ciliosa subsp. ciliosa Rimo Bacigalupi with G. T. Robbins and F. Chisaki 1956-4-19 5614 Butte 6 mi s of Oroville (along road from Oroville to Bangor) 167 Comment
  JEPS127607  Plectritis congesta subsp. brachystemon L. P. Janeway 2015-4-21 11666 Butte Plumas National Forest; SW side of Old Forbestown Road, 0.8 road km N of Forbestown Road and New York Flat Road. Comment
  CHSC2457  Plectritis macrocera R. Carter 1965-3-13 159 Butte Found on North Table Mt. ca. 27 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  CHSC24979  Plectritis macrocera J. Cox 1976-3-10 39 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  JEPS117148  Plectritis macrocera Lowell Ahart 2010-4-30 16596 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
  CHSC11805  Pleuricospora fimbriolata E. B. Copeland 1929-7-13 436 Butte Jonesville. 1550 Comment
  SEINET10449167  Pleuricospora fimbriolata Mary Susan Taylor 1981-4-27 Taylor 3560 Butte T21N R5E se sec 24, Brush Creek quad. 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. Yellow Pine Forest; 3300 ft. 1006 Comment
  CHSC94258  Poa bolanderi Lowell Ahart 2006-7-16 12972 Butte West edge of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  SEINET10968212  Poa bulbosa Lowell Ahart 1984-4-3 Ahart 4534 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
  CAS-BOT-BC255066  Poa compressa Lowell Ahart 1983-9-17 4438 Butte Ca. 0.25 mile SE of Stirling City 1100 Comment
  CHSC112341  Poa compressa Lowell Ahart 2013-7-9 18827 Butte South bank of North Honcut Creek, east of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  UC1586584  Poa howellii Vernon H. Oswald and Lowell Ahart 1991-6-5 4643 Butte ca 1.5 air mi nw Platte Mt Lookout (dirt rd to Minnie Ha Ha Mine on Big Chico Creek, w side of Hwy 32, between Forest Ranch and Lomo) 670 Comment
  UC1562449  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte ca 3 1/2 mi sw Oroville (s side of Pacific Heights Rd) 39 Comment
  UC821116  Poa secunda subsp. secunda A. A. Heller 1917-4-15 12678 Butte 10 mi n Chico 64 Comment
  UC926033  Poa secunda subsp. secunda G. P. Van Eseltine 1918-4-25 1239 Butte 4 mi se Chico (near railroad bridge over Butte Creek) Comment
  UCD80600  Poa secunda subsp. secunda CNPS SN Foothill Team 2005-3-29 SNFN 0068 a Butte CDFG North Table Mountain Wildlife Area, along western border, outside of Oroville, ca. 1 mile southwest of parking area. 362 Comment
  JEPS113263  Poa sierrae Lowell Ahart 2007-5-22 13914 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 a mile from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, a 844 Comment
  RSA0108924  Poa sierrae Lawrence P. Janeway 2013-5-16 11101 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope North Fork Feather River canyon +/- overlooking Arch Rock and the Hwy 70 rest area, along Camp Creek Road 5.4 road km northeast of Dixie Road. 702 Comment
  JEPS62440  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 miles Southwest of Oroville Comment
  UC762428  Pogogyne douglasii R. F. Hoover 1937-5-19 2243 Butte 10 mi. NW of Chico Comment
  HSC87297  Pogogyne zizyphoroides Patricia Haberkern 1974-4-21 27 Butte Off Skyway, .2 mi. E of intersection with Notre Dame Blvd., E of Chico 61 Comment
  SEINET10498988  Pogogyne zizyphoroides Mary Susan Taylor 1978-5-7 Taylor 1613 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  CHSC88060  Polanisia dodecandra subsp. trachysperma R. D. Fischer 2004-5-30 186 Butte Northern Sierra Nevada, 4-5 airmiles n. of Paradise, and w. of upper Paradise Pines. Turn w. off Skyway Road on Nimshew Road and take the s. turn on Centerville Road (on older maps Humbug Road), ca. 1.4 miles s. of this junction. Close to rd. UTM: 10617204E 4409342N. 620 Comment
  CHSC42738  Polycarpon tetraphyllum Lowell Ahart 1987-4-30 5485 Butte Along North Honcut Creek, about 2 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC62348  Polycarpon tetraphyllum B. Castro 1990-5-6 426 Butte In residential area at south end of Chico. 60 Comment
  RSA769020  Polygonum arenastrum L. Ahart, John Dittes, Josephine Guardino 2008-11-8 15409 Butte North side of gravel road, about 50 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico 67 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
  CHSC116331  Polygonum aviculare Lowell Ahart 2015-10-20 20575 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
  CHSC28012  Polygonum aviculare M. S. Taylor 1978-7-21 1793 Butte Lake Madrone at its jct with Oroville-Quincy Hwy ca. 10 mi ne of Oroville. 609 Comment
  CHSC31216  Polygonum aviculare M. S. Taylor 1980-10-6 3359 Butte N side of Hwy 70 in granitic gravel, ca. 1/4 mi w of Bear Creek jct with n fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC71261  Polygonum aviculare subsp. aviculare Lowell Ahart 1998-7-1 8035 Butte Along the fence, east of the cow chute and on the east side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
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Jan 19 2011
  CAS-BOT-BC109135  Polygonum bidwelliae Lowell Ahart 1980-5-11 2239 Butte 0.5 mile southwest of Kunkle Res. 500 Comment
  CHSC90474  Polygonum bidwelliae Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11675 Butte Big Chico Creek Ecological Reserve. Ridge top, about 50 yards south of a very poor dirt road, about 1 mile southwest of the Indian Cave, about 1 3/4 miles west of Big Chico Creek, about 4 miles (air) northeast of Chico. 484 Comment
  UC204383  Polygonum bidwelliae A. A. Heller 1914-5-18 11409 Butte near Hog Springs (6 mi e of Chico) Comment
  SEINET11934608  Polygonum bidwelliae Unknown 1988-1 29 Butte Salmon Hole, ca.5 mi E of Chico Municipal Golf Course 122 Comment
  POM196100  Polygonum bistortoides E. B. Copeland 1929-7-20 s.n. Butte Jonesville. 1550 Comment
  CHSC31429  Polygonum bolanderi L. Ahart 1980-7-20 2480 Butte On dry soil in a crack in a large bare granite rock, near Bean Creek Road, south of Little Bald Rock, about 15 miles ne of Oroville. 1100 Comment
  CHSC38616  Polygonum californicum Vernon Oswald 1983-6-18 713 Butte Upper Bidwell Park, Chico, ca. 50 ft s of Parking Area C at Horseshoe Lake. 100 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
  UC1594564  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte about 1 mi ne Carr Mine (3/4 mi nw of Lotts Lake) 1798 Comment
  CDA14466  Polygonum lapathifolium G. D. Barbe 1988-8-24 4307 Butte Lundberg Brothers' near Richvale. 0 Comment
  SEINET10479655  Polygonum minimum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4209 Butte T25N R5E ne 1/4 sw 1/4 sec 21. Jones- ville SW quad. N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi SE of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Red Fir Forest. 6400 ft. 1950 Comment
  CHSC24813  Polygonum persicaria E. L. Rilla 1976-9-18 31 Butte .5 mi s of Gridley Rd on Pennington Rd in the Gray Lodge Waterfowl Management Area. Bench Marker 72 1 mi directly w of collection area. 21 Comment
  SEINET10479784  Polygonum scabrum Mary Susan Taylor 1978-7-22 Taylor 1852 Butte On SE corner of Richvale East Road and Erickson Road, Richvale; in rice field. 30 Comment
  HSC72956  Polygonum spergulariiforme M. S. Taylor 1980-9-19 3338 Butte About 100 ft. S of Coulelenc Rd, about 500 ft. E of it's Jct. with the Skyway, Magalia 610 Comment
  SD234001  Polypodium californicum Virginia Pinkus Ryder 1965-4-4 398 Butte Megalia, Feather River. 671 Comment
  CAS-BOT-BC72032  Polypodium calirhiza A. A. Heller 1919-3-29 13090 Butte Feather River near Yankee Hill 533 Comment
  CHSC52380  Polypodium calirhiza Louis C. Bock 1987-4-23 12 Butte Ca. 1.5 mi ne of Chico on Centennial Avenue and ca. 5 ft from s side of road. Comment
  CHSC97736  Polypodium calirhiza Lowell Ahart 2007-11-3 14549 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
  SBBG126088  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte N side of large rock, on E edge of Big Chico Crk, ca.100 yards S of the trail crossing the crk, ca 100 yards W of Ten Mile House Rd, ca 3/4 mi W of Hwy 32, ca 9 mi NE of Chico 189 Comment
  SEINET10899872  Polypodium glycyrrhiza Mary Susan Taylor 1979-10-13 Taylor 2270 Butte T23N R4E sec 29. Along creek on Jordan Hill Road (Ponderosa Way on some maps), ca. 10.7 mi N of its jct with Concow Road, ca. 2 mi NE of Magalia. With Jim Jokerst. 853 Comment
  CAS-BOT-BC232967  Polypogon australis A. A. Heller 1914-5-19 11419 Butte Hills 8 miles N of Oroville Comment
  SEINET4344592 Image available Polypogon australis Unknown 2009-6-19 15927 Butte T23N, R2E, near center, upper half of Section 35. About 30 yards south of the fence and about 100 yards east of Ten Mile Road, Upper Bidwell Park, about 3/4 mile west of Highway 32, about 10 miles NE of Chico. 269 Comment
  CHSC36518  Polypogon interruptus L. Ahart 1982-5-28 3442 Butte E of North Honcut Creek, near the Peter Ahart Ranch, ca. 1.5 mi n and 3 mi e of Honcut. 50 Comment
  CHSC45744  Polypogon interruptus S. A. Conley 1986-6-16 41 Butte On n. bank of Western Canal, at jct. with the Midway, 0.8 mi. s of Nelson. 35 Comment
  UC1609522  Polypogon interruptus Lowell Ahart 1993-5-15 6941 Butte on the n side of Biggs Princeton Road about 2 mi w Biggs 30 Comment
  SEINET11665625  Polypogon interruptus Unknown 1977-1 1365 Butte Peter Ahart Ranch, Honcut 50 Comment
  CDA2355  Polypogon maritimus L. Ahart 1998-7-1 8028 Butte 20 yards south of an east west fence, at a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS127227  Polypogon maritimus Lowell Ahart 2016-5-30 20886 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 1/8 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  SEINET10658300  Polypogon maritimus A. Arthur Heller 1914-5-13 Heller s.n. Butte Between Durham and Nelson Comment
  CDA2346  Polypogon monspeliensis L. Ahart 2002-5-7 9635 Butte East side of Cherokee Road, North Table Mountain, about 4 miles (air) north of Oroville. At the beginning of the southeast branch of Schirmer Ravine, about 50 yards east of the pond. Comment
  CHSC37138  Polypogon monspeliensis L. Ahart 1982-7-18 3681 Butte Along sides and bottom of wash. Peter Ahart Ranch, ca. 1 1/2 mi n and 1 1/2 mi e of Honcut. 50 Comment
  JEPS118208  Polypogon viridis Dean W. Taylor 2004-6-17 19105 Butte Flea Valley (3 air miles NW of Pulga; watershed Flea Valley Creek, tributary North Fork Feather River) 1127 Comment
  UC123289  Polystichum californicum Mrs. R. M. Austin May 1883 80 Butte Little Chico Canyon Comment
  JEPS87565  Polystichum imbricans subsp. curtum Lowell Ahart 1994-10-9 7561 Butte ca. 8 1/2 air mi n and 1 1/2 mi e of Feather Falls (n side of poor rd from Milsap Bar to Mountain Spring House, ca. 1 mi w of Mountain Spring House and the paved rd.) 1158 Comment
  UC600570  Polystichum imbricans subsp. imbricans E. B. Copeland 1931-6-10 Butte ridge w of North Willow Creek Jonesville 1650 Comment
  UCD136541  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  CHSC51243  Portulaca oleracea Lowell Ahart 1990-7-4 6549 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  JEPS95861  Potamogeton crispus Lowell Ahart 1999-8-22 8189 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
  SD61  Potamogeton gramineus E. B. Copeland 1930-7-28 406 Butte Above Jonesville, shallow border of lily pond 1700 Comment
  CHSC34127  Potamogeton natans L. Ahart 1981-9-21 3198 Butte Along French Creek, ca. 100 m w of where the road crosses French Creek, ca. 1 mi w of the Sly Creek Reservoir. In a pond above the swamp. 1300 Comment
  SEINET10871270  Potentilla glandulosa subsp. reflexa Mary Susan Taylor 1976-5-5 Taylor 1115 Butte Abundant along or near in drier areas of Bear Creek, ca. 500 ft to 1/8 mi S of Hwy 70, ca. 30 mi NE of Oroville. Comment
  LA208088  Potentilla gracilis E. B. Copeland; 1929-7-24 sn Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  POM275136  Potentilla gracilis var. fastigiata Lyman D. Benson 1932-7-28 3971 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  SFV16940  Prunella vulgaris var. lanceolata J. N. Hogue 1980-9-6 83 .5 Butte Sierra Nevada Toadtown, 4 miles west of Stirling City, along Little Butte Creek. 915 Comment
  CHSC82331  Prunus S. Posner 1972-9-23 Butte Garden behind 725 Nord Ave., Chico. Comment
  CHSC110108  Prunus cerasifera L. P. Janeway 2012-2-28 10786 Butte Northern Sierra Nevada Foothills. Oroville; east side of the Feather River about 150 m southeast of the Thermalito Diversion Dam. 69 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
  RSA595071  Prunus persica var. persica J. T. Howell 1976-7-14 51816 Butte Feather River Canyon Hwy, just E of Jarbo Gap SW of Bucks Lake on road to Oroville. 640 Comment
  SEINET10483131  Prunus virginiana var. demissa Mary Susan Taylor 1976-4-27 Taylor 1085 Butte Abundant on W side of Cohasset Hwy, ca. 7 mi N of Chico, in Chaparral. 122 Comment
  CHSC58676  Pseudobahia heermannii M. Bailey 1991-4-23 728 Butte Ca 750 feet south of the Covered Bridge which is ca 8 mi ne of Chico on Humbug Road. Comment
  CHSC27934  Pseudognaphalium luteoalbum M. S. Taylor 1977-11-10 1529 Butte Ca. 1 mi e of jct of Nelson West Rd and Chico-Butte Hwy, on n side of Nelson West Rd in creek, ca. 23 mi s of Chico. 30 Comment
  CHSC76271  Pseudognaphalium luteoalbum Lowell Ahart 1999-9-21 8264 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CAS-BOT-BC357004  Pseudognaphalium luteoalbum Lowell Ahart 1987-5-6 5500 Butte Along the North Fork of the Feather River, near Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC50646  Pseudognaphalium stramineum Lowell Ahart 1990-4-28 6467 Butte In the borrow area, 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
  CHSC19925  Pseudotsuga menziesii var. menziesii M. S. Taylor 1975-2-23 388 Butte Ca. 3 mi e of Hwy 32, ca. 5 mi n of Forest Ranch. Comment
  JEPS87519  Psilocarphus brevissimus var. multiflorus Lowell Ahart 1993-5-13 6937 Butte about 1 3/4 mi n and 1/2 mi e Honcut (large vernal pool e of deep wash, about 12 mi s of Oroville); Peter Ahart Ranch 30 Comment
  SEINET10904902  Psilocarphus tenellus Lowell Ahart 1983-8-16 Ahart 4304 Butte T26N R4E section 32. Near Bull Hill Road, ca. 3 miles south of Butte Meadows. Yellow Pine Forest; 1450 m. 1450 Comment
  CAS-BOT-BC72553  Pteridium aquilinum Javier Penalosa 1962-6-18 2443 Butte Near confluence of French and Peavine Crks. 609 Comment
  SD3533  Pterospora andromedea E. B. Copeland 1931-7-15 Butte Jonesville 1550 Comment
  CHSC31774  Pterostegia drymarioides L. Ahart 1974-3-18 322 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC100487  Pyracantha fortuneana Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15422 Butte South of the trail on the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC20490  Pyrola aphylla M. S. Taylor 1975-6-30 813 Butte Ca. 50 yds e of Greenwood Store, Cohasset, ca. 18 mi ne of Chico. 853 Comment
  CHSC34222  Pyrola aphylla M. S. Taylor 1981-5-29 3812 Butte Vicinity of old mining claim cabin, Chino Ridge, at end of spur road 22N31, at Chino Creek, ca. 3 air mi sw of Coyote Gap, ca. 16 air mi n of Oroville. 975 Comment
  SEINET10449176  Pyrola picta Mary Susan Taylor 1982-8-16 Taylor 4999 Butte T24N R4E n/nw sec 12. Pulga NW quad. Along rd and in saddle, ca. 0.5 mi n of Bald Mt, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600- 5700 ft. 1737 Comment
  CHSC43865  Pyrus communis Vernon Oswald 1988-3-24 3262 Butte Rancho Arroyo Chico. Bidwell River State Park s of Chico Landing Site, just n of the access road to a gravel bar along the Sacramento River at Chico Creek. 38 Comment
  CAS-BOT-BC94690  Quercus X howellii John Thomas Howell 1955-6-15 30491 Butte 6 miles from Paradise on road to Pentz 426 Comment
  UCD169445  Quercus berberidifolia L. P. Janeway; Matt Brown, Jamie Tuitele-Lewis 2005-4-12 8361 Butte Plumas National Forest; 12 m from the northeast shore of Paradise Lake, about 485 m east-southeast of the uppermost tip of the lake. 777 Comment
  CAS-BOT-BC62691  Quercus chrysolepis John Thomas Howell 1962-6-15 37437 Butte Magalia 731 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
  CDA35902  Quercus douglasii P. Akers 2002-5-5 s.n. Butte Northern California; Cherokee Rd & Thompson Flat Rd. 73 Comment
  CAS-BOT-BC79603  Quercus durata Lowell Ahart 1985-6-30 5093 Butte S of road to the Forbestwon Res. 200 yards S of the road to the Forbestown Res., 100 yards S of the Forbestown Ditch, 899 Comment
  CHSC97044  Quercus durata B. Castro; Plumas NF/Feather River botanists 2005-6-23 1490 Butte At E edge of ridge above Magalia, off E end of Hollywood Drive, in USFS parcel about midway between Paradise Lake and Magalia Res., overlooking Little Butte Ck. On isolated serpentine outcrop. 755 Comment
  CHSC102405  Quercus kelloggii Lowell Ahart 2009-6-19 15952 Butte On dry soil, on the north side of Ten Mile House Road, Upper Bidwell park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 369 Comment
  JEPS95964  Quercus kelloggii Lowell Ahart 1999-6-12 8084 Butte North Table Mountain; about one mile (air) northwest of the entrance gates along the west side of Cherokee Road; about 7 miles (air) north of Oroville 365 Comment
  LA205359  Quercus lobata Carl Epling; August 1933 sn Butte hooken oak in park at Chico Comment
  POM106177  Quercus wislizeni C. C. Bruce 1897-05 1798 Butte Forest- Ranch. Comment
  CHSC1483  Ranunculus alismifolius M. Roberson 1956-4-1 Butte SW of Paradise, along Skyway. 426 Comment
  UC600478  Ranunculus alismifolius var. alismifolius H. F. Copeland 1931-6-11 Butte Butte Creek Meadows Comment
  CHSC111337  Ranunculus arvensis Lowell Ahart 2012-5-2 17961 Butte Near a small drainage, about 30 yards northeast of the Easter Cross Parking Lot, Uppe Bidwell Park, about 1 mile east of Chico. 91 Comment
  UCD95793  Ranunculus canus Perry Allen 1961-3-9 s.n. Butte Vicinity of La Grange. Comment
  CHSC46790  Ranunculus cymbalaria var. saximontanus R. Schlising 1987-9-27 4545 Butte Along N. Fork Feather River, ca 1.25 mi S of crossing of Bear Ranch Creek by Hwy 70. 463 Comment
  CHSC53702  Ranunculus hebecarpus Kirsten Tarp 1983-4-3 251 Butte S part of county on Swedes Flat Rd. 335 Comment
  CHSC29047  Ranunculus muricatus R. A. Schlising 1980-4-14 3566 Butte Richvale vernal pools; 1/4 mi s of junction Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. In ditch at s end of area. Comment
  CHSC46060  Ranunculus muricatus Kirsten Tarp 1983-4-9 267 Butte N of Butte College, in ditch. 91 Comment
  RSA517348  Ranunculus muricatus Barbara J. Ertter 1986-4-13 5888 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  UCD80703  Ranunculus muricatus CNPS SN Foothill Team 2005-3-23 SNFN 0064 Butte CDPR, Oroville State Recreation Area, along the North Fork Trail, on the Potter's Point Loop Trail, north of the intersection with Potter's Ravine Trail. 372 Comment
  JEPS43466  Ranunculus occidentalis Joan O. Danielson 1966-4-6 6 Butte Cherokee Rd. 1 mi. s. on way to Table Mt. 609 Comment
  SD1769  Ranunculus occidentalis E. B. Copeland 1930-6-26 642 Butte Jonesville, in meadows 1550 Comment
  SEINET12091617  Ranunculus occidentalis Unknown 1984-1 6 Butte ca 3/4 mi ne of Centenial and Manzanita avenues. Nw side of road. Chico Quadrangle 15'. NW corner 70 Comment
  UC726362  Ranunculus occidentalis A. A. Heller 1919-5-18 13181 Butte between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC28005  Ranunculus occidentalis var. occidentalis M. S. Taylor 1978-7-21 1829 Butte On s side of Oroville-Quincy Hwy along meadow and creek, ca. 14 mi n of Lake Madrone. 1463 Comment
  RSA718079  Ranunculus occidentalis var. ultramontanus L. Ahart 2006-7-16 12997 Butte NW edge of Willow Creek, 3/4 airmile NW of Jonesville, 5 airmiles NE of Butte Meadows. 1516 Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  CHSC1527  Rhamnus ilicifolia 1937-5-1 Butte Butte Creek. 91 Comment
  NY43527  Rhamnus rubra S. Bianco 1995-9-7 1025 Butte Concow area, between Jarbo Gap & Concow, along Deadwood Rd 579 Comment
  RSA719541  Rhamnus rubra Michael A. Vincent, K. Levings 2006-7-29 12885 Butte NE of Chico along Rt. 32. Comment
  UC600525  Rhamnus rubra H. F. Copeland 1930-7-26 1379 Butte Jonesville Comment
  CHSC37651  Rhamnus tomentella subsp. tomentella T. B. Devine 1981-8-25 753 Butte Hwy 70, ca. 1/2 mi SE of Pulga Bridge. 487 Comment
  CHSC92537  Rhamnus tomentella subsp. tomentella L. P. Janeway; Matt Brown, Chris Christofferson 2005-5-3 8375 Butte Northern High Sierra Nevada. Plumas National Forest; along east side of Concow Road 110 m north of the side road to top of Sawmill Peak; 970 m east of the Lookout Tower; 2.7 km east of Magalia. Ridgetop. 954 Comment
  POM86215  Rhamnus tomentella subsp. tomentella C. C. Bruce 1897-06 1808 Butte Little Chico. Comment
  UC1093997  Rhamnus tomentella subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia 731 Comment
  CHSC27208  Rhaphiolepis rubra P. Moyer 1972-4-4 155 Butte CSUC Campus. NE corner of library. 60 Comment
  UC2026886  Rhododendron Lowell Ahart, John Dittes, Josephine Guardino 2012-4-6 17809 Butte On the north side of Big Chico Creek, Lost Park in Bidwell Park, City of Chico. Comment
  CHSC31679  Rhododendron occidentale L. Ahart 1977-4-16 1304 Butte Peter Ahart Ranch, Honcut. Along the edge of North Honcut Creek. 50 Comment
  CAS-BOT-BC199745  Rhododendron occidentale var. californicum Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  CAS-BOT-BC168127  Rhus aromatica Lowell Ahart 1983-4-10 3927 Butte About 1 1/2 miles north-east of Highway 99 & Pentz Road 100 Comment
  CHSC46325  Rhus aromatica Lowell Ahart 1989-5-28 6293 Butte in openings south of Oregon Gulch Road, about 1/2 mile north of the Cementery, about 1 1/4 miles west of Rocky Point, about 10 miles east and 3 miles north of Oroville. 335 Comment
  SEINET10454080  Rhus trilobata Mary Susan Taylor 1975-4-25 Taylor 505 Butte Ca. 20 mi NE of Chico on Cohasset Rd, ca. 0.5 mi N of the horse trough. Comment
  CHSC44062  Rhynchospora capitellata L. P. Janeway 1988-6-19 2828 Butte Near (above and not visible from) Honey Run Rd 0.6 mi SW of Skyway, Paradise. 457 Comment
  JEPS113701  Rhynchospora capitellata Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14278 Butte Northwest part of a large open area, about 250 yards east of Bean Creek Road, northeast of Little Bald Road, about 16 miles (air) northeast of Oroville 1024 Comment
  CHSC96232  Ribes amarum R. Fischer 2006-4-25 998 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve off Lookout Trail. Plants growing the southern end of reserve on the north facing, densely brushy hillside in one of the seasonal stream drainages/ravines. 304 Comment
  CAS-BOT-BC212675  Ribes nevadense E. B. Copeland 1931-7-31 647 Butte Near Butte Creek, Jonesville Comment
  CHSC78079  Ribes nevadense Caleb E. Casey 1999-4-27 Butte Paradise Lake. Found on trail along shore. 777 Comment
  UC726482  Ribes nevadense A. A. Heller 1919-5-17 13155 Butte near Stirling; Feather River 975 Comment
  CHSC3299  Ribes roezlii M. L. Hillier 1966-4-23 Butte Off rt. side of state route 32, approx. 9 miles e. of Forest Ranch. Comment
  CHSC44939  Ribes roezlii Richard Steward 1988-4-25 8 Butte Ca. 6 mi n, 1.5 mi nw of Paradise. 640 Comment
  CHSC62113  Ribes roezlii B. Castro 1987-5-21 118 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Alatina Drive. At edge of dense thicket in bed of ephemeral stream between two S-trending ridges. 463 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
  JEPS119786  Robinia pseudoacacia Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18002 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC97353  Romulea rosea var. australis Paul Maslin 2006-4-26 50 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10609773E 4410100N. 249 Comment
  CHSC113160  Rorippa curvisiliqua Lowell Ahart 2013-11-17 19261 Butte Along the sides of McCabe Creek, below the high water line of Lake Oroville, about 5/8 of a mile southwest of the Enterprise Bridge across Lake Oroville. 245 Comment
  CHSC80517  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2001-4-27 8732 Butte On the south side of a road levee, just north of the bridge across Wyandotte Creek, north of Lower Honcut road, about 100 yards west of the Railroad, about 1 1/4 mile east of Highway 70, about 1 3/4 miles west of Honcut, about 14 miles (air) south of Oroville. 26 Comment
  JEPS120612  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2013-11-13 19231 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
  UC600715  Rorippa nasturtium-aquaticum H. F. Copeland 1920-5-23 221 Butte Jonesville Comment
  CHSC113373  Rorippa palustris var. occidentalis Lowell Ahart 2014-4-16 19362 Butte On the sides but near the top of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC109085  Rosa banksiae Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17869 Butte Between the edge of the paved road and the back of a home, east of the Deer Pen, between Table 12 and 13 , Lower Bidwell Park, Chico. 65 Comment
  CHSC93974  Rosa bridgesii R. D. Fischer 2004-6-20 755 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. Collected off forest floor on the east side, north end, of Chico Meadow and adjacent Scout Road. 1371 Comment
  CHSC97155  Rosa bridgesii Lowell Ahart 2007-5-16 13891 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
  JEPS116658  Rosa multiflora L. P. Janeway, B. Castro 2010-4-30 9970 Butte Lower Bidwell Park, Chico Chico (along southeast side of Big Chico Creek about 160 m northeast of intersection of E, 8th Street and El Monte Avenue); Sacramento Valley 75 Comment
  CHSC102197  Rosa pisocarpa subsp. ahartii Barbara Ertter; Lowell Ahart 2007-6-23 19074 Butte Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC43126  Rosa pisocarpa subsp. ahartii L. P. Janeway 1987-6-20 2276 Butte Along road to Fall River and Cascade, 3.0 mi N of the Feather Falls-Lumpkin Ridge Rd. 1013 Comment
  CHSC99317  Rosa pisocarpa subsp. ahartii Lowell Ahart 2008-5-30 14799 Butte Small meadow, about 350 yards southwest of the cemetery, about 50 yards north of Oregon Gulch, about 10 miles (air) northeast of Oroville. 305 Comment
  UC1926780 Image available Rosa pisocarpa subsp. ahartii Barbara Ertter, Lowell Ahart 2007-6-23 19074 Butte Butte County: Black Bart Road 1.3 miles from lower junction with Forbestown Road, ca 10 airmiles ESE of Oroville. 655 Comment
  CHSC42056  Rotala ramosior Lowell Ahart 1986-11-9 5441 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  JEPS120765  Rotala ramosior Lowell Ahart 2013-9-20 19059 Butte About 100 yards west of the railroad, about 400 yards south of the Rice Experiment Station buildings, about 2 miles SE of Richvale. Comment
  CAS-BOT-BC156614  Rubus bifrons John Thomas Howell 1962-6-15 37453 Butte Magalia 731 Comment
  SEINET10483581  Rubus leucodermis Mary Susan Taylor 1977-11-12 Taylor 1538 Butte Up to 1/4 mi beyond end of Upper Bidwell Park Road, just out of Upper Bidwell Park, Chico. Foothill Woodland. Comment
  CHSC52474  Rubus parviflorus L. P. Janeway 1987-6-27 2333 Butte Along dirt rd 0.6 mi E of Ramsey Bar; just N of 'The Big Hill'. At creeklet draining under the road. 1386 Comment
  CHSC50341  Rubus pensilvanicus Vernon Oswald 1990-5-14 4212 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  CHSC65432  Rubus pensilvanicus Vernon Oswald 1989-4-20 3743 Butte The Midway between Richvale and Hwy 162. Along roadside ditches. 30 Comment
  CHSC26637  Rubus ursinus M. S. Taylor 1977-11-12 1538 Butte At very end of Upper Bidwell Park Rd, Chico. 243 Comment
  CHSC6574  Rudbeckia hirta var. pulcherrima R. Carter 1966-7-10 485 Butte Found 1 mi. S Butte-Plumas Co., line along W side Oroville-Quincy Rd., in field. 1371 Comment
  CHSC102999  Rumex conglomeratus Lowell Ahart 2009-6-3 15820 Butte Drainage below dam, about 100 yards west of the table at the old homestead and about 50 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) southwest of the intersection of Highway 32 and Ten Mile House road, about 10 miles northeast of Chico. 232 Comment
  RSA754881  Rumex conglomeratus L. Ahart 2009-6-18 15912 Butte 10 yards W of the dredger piles along N Honcut Creek, about 2.5 miles N and 2.75 miles E of Honcut, about 12 miles SE of Oroville. 59 Comment
  CAS-BOT-BC421618  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CHSC103683  Sagina apetala Lowell Ahart 2010-4-30 16583 Butte Area of erosion control, disk golf area, on a ridge about 200 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 369 Comment
  CHSC35034  Sagina apetala R. A. Schlising; R. Banchero, J. Jokerst 1981-3-22 4007 Butte NW of Oroville and N of Thermalito Forebay, in Campbell Hills. 106 Comment
  CHSC90917  Sagina apetala Lowell Ahart 2005-4-18 11744 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
  UC1562015  Sagina decumbens subsp. occidentalis Barbara Ertter with Lowell Ahart 1986-4-13 5896 Butte ca. 2 airmiles n.-n.e. Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  UCD138071  Sagittaria sanfordii Herbert L. Mason; Verne Grant 1946-8-8 13001 Butte West Gridley road one mile west of Gridley - Pennington Highway. Comment
  POM107313  Salix amygdaloides C. C. Bruce 1898-03 1788 Butte [Iron Canyon?] Comment
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Mar 5 2011
  LA208601  Salix eastwoodiae E. B. Copeland; 1931-6-11 617 Butte Jonesville, Kirby's Meadow 1750.0 Comment
  UC600414  Salix eastwoodiae H. F. Copeland 1931-6-11 1544 Butte Kirby Meadows Jonesville 1828 Comment
  UCD110804  Salix geyeriana E. B. Copeland 1931-6-10 618 Butte Jonesville, by Butte Creek. 1500 Comment
  RSA795646  Salix gooddingii L. Ahart 2012-4-20 17892 Butte 20 yards north of the table at the old homestead, about 50 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 miles west of Highway 32, about 9 air miles northeast of Chico. 259 Comment
  SBBG128458  Salix gooddingii L. Ahart 2012-4-3 17803 Butte N bank of N Honcut Crk, Peter Ahart Ranch, ca. 1.25 mi N and 2.75 mi E of Honcut, ca. 12 mi SE of Oroville 38 Comment
  CAS-BOT-BC104076  Salix hindsiana Lowell Ahart 1984-6-8 4676 Butte along the dirt road about 1/10 mile north-west of the water tower, above the generator, about 1 mile east of the Ponderosa Dam, about 2 miles north of Forbestown 144 Comment
  CHSC11348  Salix laevigata Lowell Ahart 1970-3-18 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC125177  Salix lasiandra var. lasiandra E. B. Copeland 1931-6-10 619 Butte Jonesville 1500 Comment
  CAS-BOT-BC125181  Salix lasiandra var. lasiandra Lowell Ahart 1982-5-8 3408 A Butte Near Forbestown Reservoir 800 Comment
  CHSC108851  Salix lasiolepis Lowell Ahart 2012-3-9 17772 -A Butte West bank of North Honcut Creek, Peter Ahart Ranch, about 1-1/2 miles north and 2-3/4 miles east of Honcut, about 12 miles southeast of Oroville. 44 Comment
  CHSC65016  Salix lemmonii Vernon H. Oswald; Lowell Ahart 1987-7-1 3074 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. 1935 Comment
  LA208842  Salix ligulifolia E. B. Copeland; 1931-6-9 621 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CHSC31866  Salix lucida subsp. lasiandra L. Ahart 1974-4-11 396 Butte Along North Honcut Creek on dredger tailings; Peter Ahart Ranch, Honcut. 45 Comment
  SBBG29048  Salix melanopsis E. B. Copeland 1931-6-10 Butte Butte Crk, Jonesville 1500 Comment
  CHSC90250  Salvia sonomensis M. K. Hancharick 1989-4-18 11 Butte Population ca. 150 yds se of junction Cohasset and Vilas Roads ca. 12 mi e of Chico. 609 Comment
  UC1124863  Salvia sonomensis H. A. Jensen 1933-12-15 368 Butte 1 mi sw Brownsville; Smartsville Quad. 609 Comment
  UC102282  Sambucus mexicana Mrs. R. M. Austin 1896-7 612 Butte Colby Comment
  CHSC42660  Sanicula bipinnata Vernon Oswald 1985-4-16 1721 Butte Upper Bidwell Park, Chico, on the slope bordering the s side of the Golf Course. 121 Comment
  CHSC4020  Sanicula bipinnatifida E. P. Parreno 1967-4-3 Butte Tabletop Mountain. Comment
  UC875445  Sanicula bipinnatifida Lewis S. Rose 1937-6-10 37367 Butte Forbestown 838 Comment
  CAS-BOT-BC223241  Sanicula bipinnatifida Clarence R. Quick 1954-7-31 54 -02 Butte Big Bar Mt. ridge east of Pulga Comment
  CAS-BOT-BC223243  Sanicula bipinnatifida A. A. Heller 1918-5-5 13015 Butte Near Paradise Comment
  CHSC38746  Sanicula crassicaulis Vernon Oswald 1983-3-7 134 Butte Upper Bidwell Park, Chico, on the s side of Chico Creek ca 300 ft e of the Golf Course. 91 Comment
  UC478491  Sanicula graveolens E. B. Copeland 1931-6-22 Butte W of Jones Creek; Jonesville 2100 Comment
  CHSC33111  Sanicula tuberosa M. S. Taylor 1981-5-5 3618 Butte E side of spur rd off 21N35Y, ca. 0.5 mi se of Feather Falls trailhead, ca. 1 mi n of Feather Falls community. 822 Comment
  CHSC36298  Saponaria officinalis M. S. Taylor 1982-8-16 4987 Butte S end of Stirling City along both sides of the Skyway. 1036 Comment
  UC726266  Saxifraga californica A. A. Heller 1940-3-8 15507 Butte just above Spring House on the Neal Road to Paradise Comment
  CHSC25  Sceptridium multifidum Mr. Wheelock 1943-11-1 Butte Above Stirling. 1158 Comment
  CHSC44619  Sceptridium multifidum Vernon Oswald 1985-9-2 1935 Butte Concow Rd. ca. 6 air miles nne of Lake Concow at Rag Dump. Near Fall Creek. 1170 Comment
  RSA770096  Schedonorus arundinaceus L. P. Janeway, B. Castro 2009-7-4 9840 Butte Northern High Sierra Nevada. Along Four Trees Road 3.4 road km east of Coyote Gap; at head of minor drainage into Clear Creek, head of French Creek Basin. 1469 Comment
  CAS-BOT-BC111374  Schoenoplectus acutus var. occidentalis Lowell Ahart 1981-8-31 3061 Butte Wyandotte Lake, E or Oroville. 450 Comment
  UC1100827  Schoenoplectus mucronatus Herbert L. Mason 1946-9-27 13135 Butte 3 mi w Biggs; w of Biggs Comment
  CHSC56811  Scirpus diffusus L. P. Janeway; C. A. Janeway 1986-9-13 1847 Butte Wet meadow just east of Scotts John Creek, above Road 26N27 and across from small side road. 1737 Comment
  JEPS98280  Scirpus diffusus Lowell Ahart 2000-6-29 8547 Butte By the road culvert, on the northwest side of 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
  SEINET7487248 Image available Scirpus diffusus Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11404 Butte ca. 4 mi NE of community of Butte Meadows, ca. 0.1 mi N of Cherry Hill Campground, at crossing of small tributary of Butte Creek; ; W side of paved road 1448 Comment
  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
  CHSC101316  Scleranthus annuus subsp. annuus Lowell Ahart 2009-4-22 15574 Butte West side of the 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
  CHSC71173  Scleranthus annuus subsp. annuus Lowell Ahart 1998-6-9 7981 Butte On the west side of Cherokee Road, about 50 feet south of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  JEPS104220  Scribneria bolanderi Lowell Ahart 2003-5-18 10180 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  RSA0047141  Scribneria bolanderi L. Ahart 2009-4-26 15632 Butte E side of Ten Mile House Road, just NE of Guardians Trail, Upper Bidwell Park, about 1/4 mile W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET10508334  Scribneria bolanderi Mary Susan Taylor 1979-5-6 Taylor 1996 A Butte Peter & Lowel Ahart Ranch, Honcut; Valley Grassland. Comment
  CDA13322  Scutellaria californica G. F. Hrusa, T. D. Wilfred 1996-7-9 13168 Butte Sierra Nevada; approx. 0.2 m. E of bridge over Marble Creek on USFS N60. 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
  POM70087  Scutellaria californica C. C. Bruce 1897-05 1825 Butte Little Chico. Comment
  RSA0115081  Scutellaria siphocampyloides Lowell A. Ahart 2013-5-27 18708 Butte About 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3.25 miles (air) southwest of Forbestown. 764 Comment
  CHSC62564  Scutellaria tuberosa B. Castro 1993-4-28 464 Butte Ca 1 air mi N of Bald Rock Dome on SW end of Watson Ridge. On knoll of S-trending ridge, 10-15 ft E of Feather Falls Trail. 929 Comment
  CHSC87422  Scutellaria tuberosa R. D. Fischer 2004-3-15 112 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at northern end Guardian Trail, along trail. 411 Comment
  CHSC87435  Sedella pumila R. D. Fischer 2004-3-28 98 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected along Guardian Trail. Located approx. 0.5 mile south of Pine Trail junction near drainage. 396 Comment
  CHSC90027  Sedum spathulifolium Ross Rowland 2001-4-2 31 Butte On edge of cliff at end of Billie Trail, about 50 yards below park bench, in Billie Park, Paradise. 617180mE/4403680mN/zone 10N. 487 Comment
  SFV1567  Sedum spathulifolium M. L. Vincent 1962-4-18 211 Butte Near Feather River at Hells Town. Comment
  CAS-BOT-BC62124  Selaginella hansenii A. A. Heller 1913-4-6 10715 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC117771  Selaginella hansenii L. P. Janeway 2016-11-9 12176 Butte Northern High Sierra Nevada. Plumas National Forest; rocky bench above Pulga Road 0.5 road-km north of Hwy 70 at Pulga Bridge. 502 Comment
  CHSC28648  Selaginella hansenii M. S. Taylor 1979-3-20 1959 Butte Along north fork of Feather River, ca. 3 mi n of jct of Feather River and Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  CHSC28876  Selaginella hansenii M. S. Taylor 1980-3-1 2346 Butte Overlooking Hamlin Canyon, ca. 1/4 mi se of Elliot Spring House on Neal Rd, ca. 2 mi sw of Paradise. 301 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
  JEPS113219  Selaginella hansenii Lowell Ahart 2007-2-24 13583 Butte At and below the high water line on the west side of North Honcut Creek, on and around metavolcanic rock, Peter Ahart Ranch, about 3/4 mile north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 53 Comment
  JEPS120174  Selaginella wallacei Lowell Ahart 2012-2-22 17742 Butte On the east side of Big Chico Creek, about 1/8 mile west of South Rim Trail and the old homestead, about 3/4 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico. Comment
  CAS-BOT-BC69728  Selaginella wallacei Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC89479  Senecio eurycephalus var. eurycephalus Jenny Marr 1994-7-6 210 Butte Located in the mountains above Oroville off Forbestown Reservoir Road. 883 Comment
  CHSC24645  Senecio integerrimus var. major S. Deaton 1976-4-23 38 Butte 20 ft sw of Feather Falls trail, ca. 1 3/4 mi n of Falls parking lot. 853 Comment
  CAS-BOT-BC5710  Senecio lewisrosei Lewis Samuel Rose 1939-6-7 39247 Butte North Fork of the Feather River, 3 mi S of Pulga 609 Comment
  CHSC71634  Senecio triangularis Vernon H. Oswald; Lowell Ahart 1998-8-11 9464 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. Along the edge of the creek. 1396 Comment
  CHSC108784  Senecio vulgaris L. P. Janeway 2011-6-7 10364 Butte Sacramento Valley. Along Nelson Ave 1.0 road km west of its bridge over Thermalito Forebay, about 5.7 air km west of Oroville. Weedy edge of road side drainage. 99 Comment
  CHSC113379  Senecio vulgaris Lowell Ahart 2014-4-9 19329 Butte Rice field road, near the pump, 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. 22 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
  CHSC26672  Sericocarpus oregonensis M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1502 Butte Scattered on E side of the Skyway, in Inskip. 1615 Comment
  CHSC51294  Setaria pumila Lowell Ahart 1990-10-21 6638 Butte Below the high water line of Lake Oroville, about 1 mile north of Nelson Bar Road, about 1/2 mile west of Gold Flat. 213 Comment
  SEINET3449124  Sibara virginica Unknown 2003-5-9 10123 Butte Gridley, Gridley, about 3 miles by air southwest, along the southwest corner of a prune orchard on the north side of Evans Reimer road, about 0.75 miles west of Block Road 20 Comment
  CHSC45307  Sibbaldia procumbens V. Oswald; L. Ahart 1988-10-6 3705 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 1.5 mi (air) ne of Jones Meadow. 1889 Comment
  CHSC29978  Sidalcea asprella Lowell Ahart 1980-5-12 2255 Butte Peter Ahart Ranch, ca 1.5 mi N and 2.75 mi E of Honcut; near North Honcut Creek. 50 Comment
  UC1013146  Sidalcea asprella C. L. Hitchcock 1952-5-28 19537 Butte 6 mi w Forbestown (Oroville-Forbestown Road) Comment
  CAS-BOT-BC5780  Sidalcea asprella var. robusta A. A. Heller 1915-5-17 11879 Butte Along Chico Creek 5 miles E of Chico Comment
  CHSC34962  Sidalcea calycosa M. J. Lavelle; R. Schlising 1975-10-4 8 Butte Small population in field at NE corner of East Avenue and Mariposa Avenue in Chico. 60 Comment
  CDA36511  Sidalcea calycosa subsp. calycosa L. Ahart 1998-6-3 7964 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS127006  Sidalcea diploscypha Lowell Ahart 2016-5-24 20845 Butte About 200 yards west of Loma Rica Road, about 250 yards southwest of the intersection of Loma Rica Road and La Porte Road, about 3 1/2 miles (air) northeast of Honcut. Comment
  CHSC34953  Sidalcea gigantea R. Schlising; R. Banchero 1980-7-31 3941 Butte 1.1 mi S of Inskip along Skyway. Comment
  SD3021  Sidalcea glaucescens E. B. Copeland 1930-7-21 Butte Jonesville. 1550 Comment
  POM282877  Sidalcea glaucescens Lyman Benson 1932-7-28 3960 Butte First summit, Oroville-Quincy. Sierra Nevada Range, Feather River watershed. 1829 Comment
  SD122545  Sidalcea hartwegii Lowell Ahart 1984-5-7 4594 Butte Ca. 0.5 mile north of Kunkle Reservoir, along Kunkle Creek, ca. 2.0 miles south of Paradise, east side of Pentz-Magalia Highway. 600 Comment
  UC725340  Sidalcea hirsuta A. A. Heller 1941-5-13 16122 Butte 10 mi n of Chico (on U.S. Highway 99E); U.S. Highway 99E Comment
  UCD149878  Sidalcea hirsuta M. F. 1974-5-13 s.n. Butte Gray Lodge Wildlife Area, Field 5. Comment
  JEPS104600  Sidalcea malviflora Lowell Ahart 1993-10-3 7269 Butte W branch of Wildcat Creek, about 2 mi NE of Coyote Gap 1402 Comment
  CHSC34947  Sidalcea oregana subsp. spicata R. Schlising; R. Banchero 1980-8-1 3958 Butte Near east end of Philbrook Lake. Comment
  UC726097  Sidalcea oregana subsp. spicata A. A. Heller 1928-6-28 14650 Butte Butte Meadows Comment
  CHSC55508  Sidalcea robusta L. P. Janeway; B. Castro 1991-5-27 3966 Butte Upper Bidwell Park; along North Rim Trail, back side (northwest) of small peak overlooking area between Salmon Hole and Brown's Hole. 365 Comment
  JEPS114713  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte 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
  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
  RSA3433  Silene californica Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET10537657  Silene californica Mary Susan Taylor 1981-4-5 Taylor 3495 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
  SEINET5337145  Silene californica M. J. Williams, W. Roderick 1984-5-25 84- 21 -4 Butte 3.3 miles from Paradise on Honey Run Road. 168 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
  SEINET10537580  Silene douglasii Mary Susan Taylor 1979-7-21 Taylor 2146 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  UCD98658  Silene gallica A. A. Heller 1914-4-24 11319 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC389007  Silene laciniata subsp. californica Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC31132  Silene laciniata subsp. californica Diane M. Reilly 1980-3-21 1 Butte On road cut, ne side of Dark Canyon Rd, ca. 2 mi off Hwy 70, ca. 25 mi e of Chico. 487 Comment
  CHSC42411  Silene laciniata subsp. californica Lowell Ahart 1977-4-28 1326 Butte Near Ponderosa Way and near the Ponderosa Dam, north-west of Forbestown. 335 Comment
  UCSB63726  Silene laciniata subsp. californica 1986-4-19 Butte 11.5 m. N of Chico Municipal Airport on Cohasset Hwy. 853 Comment
  CHSC35040  Silene lemmonii R. A. Schlising 1981-6-11 4069 Butte S of Butte Meadows along Humboldt Road, 1.9 mi NE of its junction with Hwy 32 at Lomo. Comment
  CHSC91476  Silene lemmonii L. P. Janeway 2005-6-26 8438 Butte Northern High Sierra Nevada. In young timber plantation along Road 24N13 at Plumas County line; ridge between Lockerman Creek and Cedar Creek. 1305 Comment
  UC600622  Silene lemmonii H. F. Copeland 1930-7-21 Butte Jonesville Comment
  JEPS109832  Silene occidentalis subsp. longistipitata Dean W. Taylor 2004-7-21 19205 Butte Scotts John Creek;, NE of Jonesville. east of Forest Road 26N11; Approx. 1.5 MI SSE of Humboldt Peak 1828 Comment
  UC177562  Silene occidentalis subsp. longistipitata H. M. Hall Jul 1914 9773 Butte Jonesville 1524 Comment
  SEINET10537666  Silene occidentalis subsp. occidentalis Mary Susan Taylor 1982-8-16 Taylor 5000 Butte T24N R4E se/sw sec 1. Pulga NW quad. Along rd from Bald Mt to High Rock Ravine, ca. 4 air mi ne of Stirling City. Mixed Coniferous Forest; 5600 ft. 1707 Comment
  CAS-BOT-BC75278  Sisymbrium officinale Lowell Ahart 1989-5-23 6247 Butte Along the edges of Avocado Road, about 0.5 mile west of the Oroville Bangor Highway, about 1 mile northwest of Bangor. 213 Comment
  UC1134656  Smilacina racemosa P. L. Johannsen 1936-7-17 946 Butte 3 mi se Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle 1554 Comment
  CHSC31473  Solanum americanum L. Ahart 1980-7-20 2471 Butte In a rd drain along the edge of the abandoned paved rd on the n side of the Suspension Bridge across Lake Oroville, n of Oroville. 330 Comment
  CHSC97398  Solanum americanum Robert Fischer 2006-6-27 1004 Butte Chico. Within upper Bidwell Park in the City of Chico. 60 Comment
  RSA724846  Solanum americanum L. Ahart 2006-9-28 13377 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
  UCD126974  Solanum parishii A. A. Heller 1915-4-12 11814 Butte Butte County. 14 miles northeast of Chico near Rock creek. Comment
  UCD126991  Solanum parishii M. S. Taylor 1981-4-8 3502 Butte West side of Dark Canyon Road, ca. 3 miles south of its junction with Big Bend Roads junction, ca. 4 air miles south of Jarbo Gap on Hwy 70. 365 Comment
  SEINET10546685  Solanum parishii Mary Susan Taylor 1975-4-25 Taylor 492 Butte Ca. 1/4 to 1/2 mi E of Cohasset Hwy, along dirt rd leading up onto ridge, ca. 10 mi NE of Chico. Soil wet red clay. Mixed Chaparral. Comment
  POM69617  Solanum umbelliferum C. C. Bruce 1897-05 18721 Butte Little Chico. Comment
  UC1125062  Solanum umbelliferum C. G. Albertus 1933-6-26 32 Butte 1/2 mi s of Nelson's Bar 365 Comment
  CHSC94492  Solidago elongata Lowell Ahart 2006-8-15 13193 Butte Grassy area on the north side of Willow Creek, east edge of a large meadow, about 100 yards northwest of the Snowmobile Area, about 3/4 miles (air) northwest of Jonesville, about 4 miles (air) northeast of Butte Meadows. 1516 Comment
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Nov 23 2007
  CAS-BOT-BC364934  Solidago velutina subsp. californica A. A. Heller 1916-9-23 12662 Butte Sierra Foothills near Forest Ranch Comment
  CHSC48198  Solidago velutina subsp. californica Vernon Oswald 1985-9-2 1937 Butte Flea Valley--Sawmill Peak Rd. (V-line) 1.8 mi w of Flea Valley. 1066 Comment
  CDA42873  Sonchus oleraceus L. Ahart 2012-5-14 18061 Butte Planted area between sidewalk and Vallombrosa Avenue, west of Manzanita Avenue, just west of the bridge across Big Chico Creek, Lower Bidwell Park, Chico. Comment
  CHSC46401  Sorbus californica Lowell Ahart 1989-5-29 6323 Butte Near a stream, west of the dirt road, west of Pinkard Creek, about 1/4 mile north of the Lost Creek Dam. 1005 Comment
  POM180916  Sorbus californica H. F. Copeland 1928-8-18 886 Butte Neighborhood of Jonesville. Near Butte Creek. 1524 Comment
  JEPS118633  Spartium junceum L. P. Janeway 2011-5-2 10250 Butte Sacramento Valley. South side Feather River just east of Bedrock Park, Oroville; about 10-15 m back from the edge of the water and about 1 m higher. Comment
  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
  CHSC102718  Spergularia bocconi Lowell Ahart 2009-7-3 15986 Butte On the north side of the road, 30 yards west of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 30 yards east of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  JEPS120961  Spergularia bocconi Lowell Ahart 2013-4-29 18656 Butte About 1/4 mile N of the Honcut Cemetery, about 3.25 air miles NE of Honcut, Comment
  CHSC31224  Spergularia rubra M. S. Taylor 1980-10-6 3360 Butte N side of Hwy 70, 1/4 mi w of Bear Creek jct with N fork Feather River, ca. 0.5 mi w of Arch Rock Tunnel Rest Stop. 487 Comment
  CHSC113962  Sphenosciadium capitellatum Lowell Ahart 2014-7-13 19648 Butte North part of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  POM193364  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 430 Butte Jonesville. 1500 Comment
  CHSC52700  Spiraea cantoniensis L. P. Janeway; B. Castro 1990-3-24 3657 Butte Campus of California State University, Chico. Near Big Chico Creek along path from Holt Hall to the bridge to Sylvester's Cafe-by-the-Creek. 57 Comment
  CHSC33639  Spiraea douglasii M. Merryman; R. Banchero 1979-9-2 31 Butte Humboldt Rd at Butte Creek, 5.3 mi ne of jct Hwy 32 and Humboldt Rd. At streamside. 1341 Comment
  CHSC43736  Spiraea douglasii Vernon Oswald 1983-7-6 821 Butte Near Scout Rd. 1.2 mi n of Butte Meadows. In a meadow. 1325 Comment
  HSC104002  Spiraea douglasii L. Ahart 2013-7-1 18813 Butte About 3.25 mi. (air) SW of Forbestown; ~150 yds, E of the intersection of Forbestown Rd. and Black Bart Rd. 738 Comment
  CHSC59058  Sporobolus cryptandrus Lowell Ahart 1992-7-23 6834 Butte Along the edge of Oroville Chico Highway, at the intersection of Shippee Road and Openshaw Road. 60 Comment
  SEINET9320865  Stachys ajugoides var. ajugoides Unknown 1996-7-9 13166 Butte Plumas National Forest Comment
  CHSC43647  Stachys ajugoides var. rigida S. C. Morey 1983-7-23 591 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 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
  UC600445  Stachys ajugoides var. rigida H. F. Copeland 1927-9-4 Butte Jonesville Comment
  UC884252  Stachys ajugoides var. rigida A. A. Heller 1914-7-16 11577 Butte hills 8 mi n Oroville Comment
  UC884335  Stachys ajugoides var. rigida A. A. Heller 1917-7-26 12815 Butte Butte Meadows 1280 Comment
  SEINET10498819  Stachys palustris subsp. pilosa Lowell Ahart 1983-8-16 Ahart 4288 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
  CHSC32599  Stebbinsoseris heterocarpa J. D. Jokerst; M. S. Taylor 1980-4-19 610 Butte Adjacent to Humbug Rd., 7.4 mi N of the Centerville Cemetary. Comment
  CHSC36076  Stellaria borealis subsp. sitchana R. A. Schlising 1982-6-16 4294 Butte E side of county ne of Oroville and Brush Creek off Oroville-Quincy Road; Rogers Cow Camp site; streamside. 1219 Comment
  CHSC99553  Stellaria borealis subsp. sitchana L. P. Janeway; D. Toren, C. Christofferson,H. Koeth, D. Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada. Plumas National Forest; along Coon Creek about 100 m northeast of Rogers Cow Camp Campground, about 500 m west of Oroville-Quincy Hwy. 1234 Comment
  CHSC101093  Stellaria media Lowell Ahart; John Dittes 2009-3-20 15507 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
  RSA754998  Stellaria media L. Ahart 2008-5-12 14752 Butte Lake Oroville, on the east side of Sucker Creek, about 40-100 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
  CHSC45565  Stellaria nitens Lowell Ahart 1975-3-23 714 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UCD99456  Stellaria nitens L. Ahart 1973-3-14 168 Butte Peter Ahart Ranch, Honcut. 45 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
  CHSC61633  Stephanomeria lactucina Lowell Ahart 1993-9-8 7173 Butte On a ridge top, about 1 mile east of Snow Mountain. 2103 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
  UC1609323  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam 1158 Comment
  CHSC93348  Streptanthus diversifolius Lowell Ahart 2006-5-3 12555 Butte Basalt outcrops, about 1/4 mile north of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 402 Comment
  CHSC33225  Streptanthus longisiliquus R. E. Preston 1981-6-11 83 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  UCD78022  Streptanthus longisiliquus Robert E. Preston 2001-7-9 1673 Butte N side of The Skyway, ca. 0.15 m w of Dogtown Rd, T23N R3E nw 1/4 of ne 1/4 Section 36 713 Comment
  CAS-BOT-BC87427  Streptanthus polygaloides Lewis S. Rose 1963-6-2 63068 Butte 2 miles south of Pulga. North Fork of Feather River. 579 Comment
  CHSC33180  Streptanthus polygaloides R. E. Preston 1981-6-2 77 Butte Ca. 50 m n of Rim Rd., 5.3 km from its jct with Hwy 70 at Jarbo Gap, ca. 32 km n of Oroville. 854 Comment