Search Results — 2000 specimen records retrieved (1630 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
  UC818137  Abies concolor A. A. Heller 1917-7-26 12849 Butte Butte Meadows Comment
  CHSC1769  Abronia latifolia R. Morford 1931-4-30 Butte Salmon Hole, Chico Creek. 152 Comment
  UCD116175  Abutilon theophrasti Herbert L. Mason; Verne Grant 1946-9-4 13105 Butte Colusa Gun Club. 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
  CHSC51842  Acer circinatum L. P. Janeway 1988-7-2 2938 Butte Marsh/mdw at upper reach of Brush Cr, ca 1.5 mi S of 'town' of Brush Creek. 952 Comment
  CAS-BOT-BC330613  Acer glabrum var. glabrum A. A. Heller 1915-6-16 12025 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  CHSC26690  Acer glabrum var. torreyi M. S. Taylor; M. Hayes, R. Schlising 1977-8-17 1491 Butte Scattered on N side of Scotts John Rd, ca. 1.4 mi S of its jct with Old Humboldt Rd, near Jonesville. 1981 Comment
  CAS-BOT-BC331606  Acer macrophyllum A. A. Heller 1914-7-14 11575 Butte Canon of Big Chico Creek Comment
  CHSC3860  Acer palmatum Gary Dutton 1966-4-13 208 Butte CSC; South side of admin. bld. In front lawn. Chico Comment
  CAS-BOT-BC21702  Achillea millefolium Helen Edwards 1917-6-1 s.n. Butte De Sabla Comment
  SEINET10937970  Achillea millefolium var. lanulosa Mary Susan Taylor 1978-7-19 Taylor 1750 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CAS-BOT-BC210637  Achnatherum lemmonii John Thomas Howell 1955-6-14 30463 Butte Magalia 731 Comment
  CHSC103109  Achnatherum lemmonii Lowell Ahart 2009-5-30 15796 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. 269 Comment
  JEPS116068  Achnatherum lemmonii Lowell Ahart 2009-5-30 15796 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 269 Comment
  CHSC94138  Achnatherum occidentale subsp. californicum Lowell Ahart 2006-6-24 12859 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
  CHSC38316  Achyrachaena mollis Vernon Oswald 1983-4-20 354 Butte Upper Bidwell Park, Chico, near the s-w corner of the Omicron Enclosure (near the n boundary of the park ca. 500 ft e of the junction of Upper Park Rd. and Wildwood Ave.). 85 Comment
  SEINET5628265 Image available Acmispon americanus Heller 1913-1 2814 Butte Chico on Big Chico creek Comment
  CHSC78384  Acmispon americanus var. americanus Lowell Ahart 2000-7-18 8600 Butte Near a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC90517  Acmispon brachycarpus J. S. Peterich 1988-3-22 12 Butte Vic. Bear Hole in Bidwell Park ca. 2 mi. e. of golf course. 120 Comment
  CHSC39345  Acmispon glaber Lowell Ahart 1983-6-26 4147 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. The sign gives Big Ridge Road insead of Ponderosa Way. 575 Comment
  CHSC40281  Acmispon glaber Lowell Ahart 1985-5-31 5037 Butte About 25 feet below the high water line of Lake Oroville, about 1/4 mile west of the Enterprise Launch Area, about 1 mile west of the Ensterprise Bridge, north-east of Oroville. 274 Comment
  SD48505  Acmispon grandiflorus var. grandiflorus E. K. Balls 1957-5-22 22513 Butte North fork Feather River, above Camp Rogers, on trail to Buck's Lake. 655 Comment
  CHSC50408  Acmispon grandiflorus var. macranthus Vernon Oswald; Lowell Ahart 1990-6-27 4324 Butte Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, east side of Oro-Quincy Hwy, ca. 0.5 mi (air) north-northeast of Junction House (site). 1097 Comment
  CHSC28864  Acmispon parviflorus J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-18 467 Butte Top of North Table Mt., ca 400 m NW of Jct of Cherokee Rd., and E edge of Mt. 396 Comment
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Jan 19 2011
  CHSC878  Acmispon parviflorus M. Roberson 1956-4-9 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC4197  Acmispon wrangelianus J. Senter 1967-4-4 20 Butte Abundant 1 mi. E. of Hwy . 99E and Skyway interchange along roadway. 45 Comment
  SDSU13784  Adelinia grandis Kate Conger Butte Brush Creek. 1077 Comment
  UCR51802  Adenocaulon bicolor H. F. Copeland 1928-8-18 0399 Butte Jonesville, Butte Creek Canyon 1529 Comment
  CHSC48839  Adenostoma fasciculatum Vernon Oswald 1986-5-6 1994 Butte Cohasset Ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  CHSC3274  Adiantum aleuticum M. L. Hillier 1966-3-7 Butte On s. side of rd. between Honeyrun covered bridge and Paradise on Honeyrun rd. Comment
  CHSC3630  Adiantum capillus-veneris John Francis 1966-2-28 56 Butte Upper Bidwell Park, in canyon across road from and 1/4 mile E. of Salmon Hole. Comment
  CHSC111116  Adiantum jordanii Lowell Ahart 2012-5-17 18068 Butte On a large basalt rock, at the waters edge of Big Chico Creek, at a horse crossing, about 100 yards south of the gate on Peterson drive, south of Vallombrosa Avenue, Lower Bidwell Park, Chico. 77 Comment
  SEINET11718083  Adiantum jordanii D. B. Carlson 1980-1 11 Butte N edge of Coon Ridge, ca 0.3 km N of Skyway Road, 4.7 km E of Chico, 2.1 km WSW of Paradise 270 Comment
  HSC103928  Aegilops triuncialis L. P. Janeway 2013-5-9 11100 Butte Plumas National Forest; along Oroville-Quincy Hwy., 5.6 road km N of the bridge over Canyon Creek arm of Lake Oroville 357 Comment
  UCD51568  Aegilops triuncialis James Mallory 1967-6-14 269 Butte 10 miles s.e. Chico near jct. Pentz and Williams Road. Comment
  CHSC3137  Aesculus hippocastanum Gary Dutton 1966-4-13 204 Butte Found on C. S. C. north side of Add. Bld. Comment
  SEINET3450923  Agoseris heterophylla Unknown 2003-4-10 10053 Butte Oroville, Oroville, about 2.5 air miles north, near the east side of the 'sunken area', about 150 yrd west of the east rim of the South Table Mountain 320 Comment
  CAS-BOT-BC13346  Agoseris retrorsa L. P. Janeway 1995-6-1 4767 Butte At the far western end of Jackson Ranch Ridge, about 0.9 mi ENE of the falls of Feather Falls. 1054 Comment
  UC600720  Agoseris retrorsa H. F. Copeland 1932-7-21 Butte rocky point above hotel Jonesville Comment
  CHSC70813  Agrimonia gryposepala B. Castro; H. Durio, L. Gehrung 1995-7-24 590 Butte Ca 1.5 air mi S of Hungry Hunt Oeak, and 1.5 mi E of Hwy 70, ca 0.2 mi S on 'A' Spur off USFS Rd 22N84. 914 Comment
  SEINET3916089  Agrostis avenacea Thomas W. Nelson, Jane P. Nelson 1976-5-9 2461 Butte At intersection of Palermo Rd. & S.R. 70 ca. 4 mi. south of Oroville. Represents possible range extension.; 0 Comment
  CAS-BOT-BC127372  Agrostis exarata John Thomas Howell 1955-6-15 30475 Butte Paradise. 518 Comment
  UC1594700  Agrostis exarata Lowell Ahart 1992-7-21 6810 Butte about 2 (air) mi ne Philbrook Reservoir (s side Coon Hollow); s side Coon Hollow 1737 Comment
  UC1609262  Agrostis exarata Lowell Ahart 1993-9-13 7226 Butte about 1 mi se Butte Meadows (on s side of Bolt Creek) 1325 Comment
  SEINET10507080  Agrostis exarata Lowell Ahart 1983-8-16 Ahart 4290 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
  CHSC51285  Agrostis exarata var. monolepis Lowell Ahart 1990-9-30 6608 Butte On the bottom of the East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/8 mile north-east of the Canyon Creek Bridge across Lake Oroville. 243 Comment
  CHSC45104  Agrostis idahoensis Lowell Ahart 1988-9-4 6179 Butte On the bottom and sides of Big Kimshew Creek, the creed crosses a large meadow, about 1 air mile north-east of Jones Meadow. 1920 Comment
  JEPS121947  Agrostis idahoensis Lowell Ahart 2014-7-7 19587 Butte In the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  UC600601  Agrostis idahoensis E. B. Copeland July, 1929 Butte Jonesville Comment
  CHSC93356  Agrostis microphylla Lowell Ahart 2006-4-28 12549 Butte Open flat pasture, south of the old dirt road, about 1/4 mile southeast of the reservoir, about 2 miles by the dirt road northwest of the Iron Gate along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 316 Comment
  JEPS110248  Agrostis microphylla Lowell Ahart 2006-5-3 12560 Butte On the west side of a small stream, about 50 yards south of the fence, about 1 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 378 Comment
  JEPS117408  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
  CHSC64252  Agrostis stolonifera S. C. Morey 1983-7-23 581 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  JEPS121923  Agrostis thurberiana Lowell Ahart 2014-7-10 19612 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  JEPS117641  Agrostis variabilis Lowell Ahart 2010-9-28 17257 Butte On damp black soil, about 20 yards west of Big Kimshew Creek, about 100 yards east of the poor dirt road, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir 1886 Comment
  CHSC41588  Ailanthus altissima Lowell Ahart 1983-7-24 4208 Butte Near dirt road at Forbestown Res. ca 5 mi ne Forbestown. 450 Comment
  CAS-BOT-BC138421  Aira caryophyllea Lowell Ahart 1983-4-1 3913 Butte Sierra Nevada. Along edge of old Highway 40, near the end of the road where it runs into Lake Oroville, ca. 4 miles south of Jarbo Gap. 350 Comment
  CAS-BOT-BC138408  Aira caryophyllea var. capillaris M. S. Taylor; J. D. Jokerst; L. Ahart 1980-4-6 2442 Butte Old road ca. 100 feet west of Rocky Honcut Creek, ca. 1/8 mile north of Swedes Flat Road, ca. 2 miles east of Oroville-Bangor Highway, ca. 10 miles southeast of Oroville. 365 Comment
  UCR187083  Allium Anna M. Hurlbutt, C. R. Weeks 2007-4-26 010 Butte Sierra Nevada Mtns., Paradise, < 0.25 mi N of Skyway, c. 5 mi E of Oroville Reservoir, bluffs above Hamlin Canyon, formed by Butte Cr. and Little Butte Cr. 488 Comment
  SEINET10471915  Allium Mary Susan Taylor 1980-4-27 Taylor 2575 Butte T22N R2E sc sec 25. On N side of Humbug Rd, ca. 0.5 mi upstream from Honey Run Covered Bridge, ca. 7 mi E of Chico; Foothill Woodland. With J.D. Jokerst. 122 Comment
  CHSC2057  Allium amplectens N. Maxwell 1929-4-20 Butte Paradise. 487 Comment
  HSC84080  Allium amplectens Dale McNeal 1982-4-13 2608 Butte Beside Chico-Paradise Rd., 7.7 mi. W of junction of Hwy. 191 in Paradise Comment
  CAS-BOT-BC465437  Allium campanulatum E. B. Copeland 1929-7-3 350 Butte Jonesville 1550 Comment
  UC1299310  Allium cratericola Freed W. Hoffman 1951-3-19 3771 Butte 6.2 mi n Oroville-Chico Highway; Table Mountain Comment
  UCSB63602  Allium cratericola Hill, Rebecca 1990-3-27 Butte Ca. 150 yds. W of Cherokee-Table Mountain Road, Table Mountain, ca. 6 mi. N of Oroville 365 Comment
  RSA0105547  Allium hyalinum L. P. Janeway 2015-3-5 11634 Butte Sacramento Valley. North side of Thermalito Forebay, on the west side of Nelson Ave. 72 Comment
  JEPS109801  Allium jepsonii Dean W. Taylor 2004-6-17 19110 Butte Rocky Ridge, north side Feather River Canyon, Forest Road 23N06B under the electrical transmission line 899 Comment
  JEPS113290  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8575 Butte Northern High Sierra Nevada. Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less over-looking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. Comment
  JEPS113291  Allium obtusum var. conspicuum L. P. Janeway, B. Castro 2006-5-7 8577 Butte Northern High Sierra Nevada. Top of west-facing serpentine outcropping above Little Butte Creek 0.4 km south of Paradise Lake dam. Comment
  SEINET12050260  Allium peninsulare Unknown 1985-1 5003 Butte 1/8 mi E of the dirt road, about 1.5 mi NE of Concow of Reservoir 732 Comment
  UC843417  Allium platycaule A. A. Heller 1915-6-16 12024 Butte summit of Sierra Nevada above Jonesville; Sierra Nevada 2133 Comment
  CHSC33657  Allium validum R. Schlising; R. Banchero, J. Fuller, M. Merryman 1981-7-19 4154 Butte E of Stirling City, on S side of Bald Mt. 1691 Comment
  UC600455  Allium validum unknown 1920-7 430 Butte Jonesville Comment
  CAS-BOT-BC476713  Allium validum H. F. Copeland 1930-8-12 130 Butte Jonesville meadows 1219 Comment
  CHSC34996  Allophyllum divaricatum R. Schlising; R. Banchero 1981-6-16 4085 Butte N of Cohasset. 1097 Comment
  UC879964  Allophyllum integrifolium A. A. Heller 1917-7-26 12844 Butte Butte Meadows 1402 Comment
  CHSC33344  Allotropa virgata R. Banchero; R. Schlising 1980-7-11 300 Butte 1.3 mi s of Four Trees crossing, 2 mi nw of Elk's Retreat. 1499 Comment
  CAS-BOT-BC170913  Alnus rhombifolia Lowell Ahart 1985-1-27 4837 Butte At Kunkle Res., about 2 miles S of Paradise 550 Comment
  CAS-BOT-BC138171  Alopecurus aequalis var. aequalis Vernon Oswald; Lowell Ahart 1987-7-1 3060 Butte Lily Pond located ca. 0.6 mile (air) west of Butte Creek House and 0.25 mile south of Humbug Road, ca. 2.75 mile (air) southeast of Jonesville. 1813 Comment
  CHSC35649  Alopecurus carolinianus R. E. Preston 1982-4-7 233 Butte On banks of irrigation ditch which crosses Biggs-Princeton Hwy ca. 2.4 mi w of Biggs. 24 Comment
  RSA0118722  Alopecurus carolinianus Lowell A. Ahart 2014-4-16 19368 Butte About 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 30 Comment
  SEINET10790507  Alopecurus carolinianus Lowell Ahart 1987-5-10 Ahart 5606 Butte On dry bare reddish soil, in an idle rice field, 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut about 12 miles south of Oroville. 30 Comment
  CHSC6695  Alopecurus saccatus Marilyn Lee 1968-4-19 138 Butte On W. side of Cherokee Road, Table Mt. Comment
  CHSC94649  Amaranthus albus Lowell Ahart 2006-9-28 13364 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
  JEPS113490  Amaranthus albus Lowell Ahart 2007-7-2 14240 Butte East road edge of Oroville Quincy Highway, about one mile south of Big Ridge Road, about 9 miles (air) northeast of Oroville 362 Comment
  CHSC113539  Amaranthus californicus Lowell Ahart 2014-9-23 19880 Butte Near a small drainage, on the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. 88 Comment
  CHSC116132  Amaranthus californicus Lowell Ahart 2015-11-7 20616 Butte Strand of Lake Oroville, on the east side of the old highway Alternate 40, about 1/4 mile south of the end of Alternate 40, Dark Canyon, about 4 miles (air) south of Highway 70, about 8 miles (air) southeast of Paradise. 236 Comment
  CHSC50985  Amaranthus californicus Lowell Ahart 1990-7-2 6536 Butte Near McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 243 Comment
  CHSC109776  Amaranthus deflexus Lowell Ahart 2012-10-20 18516 Butte On the south side of the paved park road, about 30 yards east of Table 33, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS128595  Amaranthus deflexus Lowell Ahart 2017-8-1 21652 Butte Park west of railroad, northeast of the intersection of Virginia Street and Sycamore Street, in Gridley. Comment
  UC1562412  Amaranthus powellii Lowell Ahart 1990-5-28 6500 Butte about 2 1/2 mi NE of East Gridley ( along the edges of Palm Avenue, about 1/12 [sic] mile E of Larkin Road) 30 Comment
  CHSC47437  Ammannia coccinea Lowell Ahart 1974-11-9 676 Butte Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 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
  UCD102875  Ammannia robusta W. A. Harvey 1953-8-12 s.n. Butte Biggs Rice Experiment Station. Comment
  CAS-BOT-BC213949  Amsinckia John Thomas Howell 1976-4-2 51553 Butte About 2 miles southeast of Chico 60 Comment
  UC1530703  Amsinckia eastwoodiae Lowell Ahart 1985-4-1 4872 Butte 7 mi n of Oroville (near Cambell Overflow; along Table Mountain Blvd, a little s of the intersection of Hwy 70 and 149,) 100 Comment
  CHSC3876  Amsinckia intermedia Susan Carrauthers 1966-3-14 63 Butte Ca. 4 mi N.W. of city of Chico on Highway 32 next to Lindo Channel. Comment
  SEINET12319577  Amsinckia intermedia J. B. Locey 1975-1 4 Butte ca 50 yds W of Hicks Lane and 100 yds E of Hwy 99, 3 mi N of Chico 59 Comment
  UC727076  Amsinckia lycopsoides A. A. Heller 1940-4-10 15535 Butte e of Chico (alongside Bidwell Park, near the radio station) Comment
  CDA5476  Anagallis arvensis L. Ahart 1998-6-3 8011 Butte Southwest of the lone oak tree, west of the cow chute on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CAS-BOT-BC45072  Anaphalis margaritacea Lowell Ahart 1988-7-31 6143 Butte The E side of the W branch of the Feather River, N of the bridge, about 4 road miles N of Stirling City 914 Comment
  CAS-BOT-BC137804  Andropogon virginicus var. virginicus W. S. Ball 1939-2-16 s.n. Butte Wyindott Irrigation District, ditch east of Oroville about 5 miles. Comment
  CHSC43259  Andropogon virginicus var. virginicus Lowell Ahart 1987-10-22 5926 Butte About 1/2 mile west of the north entrance to the Oroville Wildlife Refuge, west of Pacific Heights Road, about 5 miles south-west of Oroville. 38 Comment
  CAS-BOT-BC84696  Anthemis cotula A. A. Heller 1914-7-18 11479 Butte Near Durham Comment
  CHSC10624  Anthemis cotula Lowell Ahart 1972-5-24 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC101270  Anthriscus caucalis Lowell Ahart 2009-4-3 15521 Butte On the north side of the gravel road, Cedar Grove parking area in Lower Bidwell Park, Chico. 67 Comment
  CHSC113593  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  RSA0118746  Antirrhinum vexillocalyculatum subsp. intermedium Lowell Ahart 2014-8-24 19727 Butte On the south side of the road, about 50 yards west of Woodleaf Creek, about 1/2 mile southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 611 Comment
  CHSC28753  Aphanes occidentalis J. D. Jokerst 1979-3-18 172 Butte 200 met. N.W. of Hwy 32, 7.7 mi. E. of Chico, top of ridge. 365 Comment
  CHSC34076  Aphyllon epigalium subsp. epigalium M. S. Taylor 1981-5-29 3814 Butte Chico Ridge, ca. 0.5 mi n of 22N31, ca. 3 air mi se of Pulga. 853 Comment
  CHSC47451  Aphyllon purpureum Lowell Ahart 1974-3-18 332 Butte Near North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC25474  Apocynum cannabinum L. Ahart 1977-6-16 1417 Butte Edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC44364  Apocynum cannabinum Lowell Ahart 1988-6-29 6115 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2-1/2 miles southwest of Big Bald Rock. 762 Comment
  CHSC57799  Arabidopsis thaliana Vernon H. Oswald; Lowell Ahart 1992-4-8 4896 Butte Trail near the abandoned railroad grade in Oroville Dam Recreation Area on the S side of Thermalito Diversion Pool, between the spillway and Sycamore Hill. On trailside bank. 76 Comment
  SBBG50849  Arbutus menziesii D. B. Marcum 1969-4-12 38 Butte Yankee Hill, Rd 70 640 Comment
  CHSC33970  Arceuthobium abietinum M. S. Taylor; L. Ahart 1981-8-15 4185 Butte N end of Snag Lake, e side of Humbug Rd, ca. 14 mi ne of Stirling City. 1737 Comment
  CHSC45038  Arceuthobium abietinum Lowell Ahart 1988-9-4 6174 Butte Host trees were on both sides of the dirt road, south of a branch of Last Chance Creek, about 1 1/2 air miles south-west of Bald Mountain. 1005 Comment
  SEINET3240024  Arceuthobium californicum R. L. Mathiasen 2010-1 1037 Butte 0.8 km S of Cobly Mtn. Lookout on forest rd. 27N36; 1750 Comment
  UC42907  Arceuthobium campylopodum E. B. Copeland 1930-7-28 Butte Jonesville 1550 Comment
  CAS-BOT-BC410082  Arceuthobium occidentale John Thomas Howell 1955-6-14 30440 Butte near Magalia 731 Comment
  RSA632990  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27461 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633001  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27460 Butte Approximately 1/2 km west of Cohasset. 570 Comment
  RSA633006  Arctostaphylos manzanita Jon E. Keeley 1996-6-20 27479 Butte Ponderosa Way, south of Cohasset. 750 Comment
  CAS-BOT-BC38873  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-4 15487 Butte 1 mile west of the Spring House on the Neal Road to Paradise. Comment
  CAS-BOT-BC38874  Arctostaphylos manzanita subsp. manzanita A. A. Heller 1940-2-24 15504 Butte Site of the Ten Mile House east of Chico, on the Humboldt Road. 304 Comment
  CHSC99888  Arctostaphylos mewukka James I. Mallory 1969-12-2 363 Butte 1 mile NW of Swain Hill, 1 mile WSW of Quartz Hill, 50 ft east of Grubbes Creek Road. 1219 Comment
  UC725911  Arctostaphylos mewukka A. A. Heller 1942-3-22 16408 Butte two mi above Cohassett School House Comment
  CHSC106063  Arctostaphylos mewukka subsp. mewukka Lowell 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. 741 Comment
  CHSC48373  Arctostaphylos mewukka subsp. truei Vernon Oswald 1985-2-28 1682 Butte Near Coutolenc Rd. ca. 0.1 mi N of the Skyway on the N edge of the Magalia Serpentine. Comment
  SD49827  Arctostaphylos patula C. G. Albertus 1933-7-25 47 Butte Chico Quadrangle, just S of Thompson's 1280 Comment
  UCD51950  Arctostaphylos truei John Thomas Howell 1975-6-15 51093 Butte In Upper Sonoran Zone on volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. Comment
  CAS-BOT-BC47382  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51090 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CHSC108865  Arctostaphylos viscida subsp. viscida Lowell Ahart 2012-3-2 17763 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
  CHSC78950  Aristida oligantha Lowell Ahart 2000-9-17 8692 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
  CAS-BOT-BC400426  Aristolochia californica A. A. Heller 1913-3-9 10687 Butte Hills two miles north of Oroville Comment
  CHSC107079  Aristolochia californica V. Lockie 2010-3-2 Butte Found in the Fernwall area above Big Chico Creek, Upper Bidwell Park. 89 Comment
  CHSC27946  Aristolochia californica M. S. Taylor 1979-3-20 1951 Butte Ca. 1 mi n of jct of north fork Feather River and Hwy 70 along an old road, ca. 10 mi n of Oroville. 304 Comment
  JEPS119996  Aristolochia californica Lowell Ahart 2012-4-19 17885 Butte On the northwest side of North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 1/2 mile east of Honcut, about 12 miles southeast of Oroville. Comment
  CAS-BOT-BC82410  Arnica discoidea H. F. Copeland 1929-7-23 400 Butte Jonesville 1600 Comment
  CHSC50814  Arnica longifolia Vernon H. Oswald; Lowell Ahart 1990-7-19 4370 Butte Slope on the south side of Philbrook Creek, ca. 3 mi east of Philbrook Reservoir, ca. 0.8 mi west of the Plumas County line. 1965 Comment
  UC1562307  Arnica longifolia Vernon Oswald and Lowell Ahart 1990-7-19 4370 Butte ca 3 mi e of, slope on s side of Philbrook Crk, (.8 mi w of the Plumas Co line) Philbrook Reservoir; , Philbrook Creek 1965 Comment
  CAS-BOT-BC85144  Arnica nevadensis Clarence R. Quick 1953-7-1 53 -31 Butte Sierra Nevada - Big Bar Mt. ridge east of Pulga Comment
  RSA794971  Artemisia douglasiana L. Ahart 2010-9-13 17153 Butte Oroville Wildlife Area, about 0.5 miles west of Pacific Heights Road, about 3.5 air miles northwest of Palermo. 32 Comment
  UCR219096  Artemisia douglasiana George K. Helmkamp, E. A. Helmkamp 2009-9-5 15573 Butte Sacramento Valley, Lower Honcut Road, 0.8 mile east of its junction with CA-70, 2.5 mi. WSW (261 deg. ) of Honcut, 6.6 mi. SE (116 deg. ) of Gridley 27 Comment
  CAS-BOT-BC93884  Artemisia dracunculus Lowell Ahart 1987-8-30 5861 Butte Along the North Fork of the Featehr River, near Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  UC116650  Asarum lemmonii Mrs. R. M. Austin June 1896 153 Butte Lomo Comment
  UCD121274  Asclepias cordifolia M. S. Taylor 1980-5-31 2775 Butte E of Coutelenc Rd at its jct with the Skyway. 609 Comment
  CAS-BOT-BC68880  Aspidotis californica M. S. Taylor; T. Devine; M. Merryman 1981-2-11 3381 Butte Big Bend Mt. Quad. ca. 100 ft. E of Lumpin Rd. on N slope above Macabes Creek, ca. 2 mi. N of jct Lumpkin Rd. 457 Comment
  CAS-BOT-BC99218  Aster M. S. Taylor 1975-10-31 985 Butte Ca. 10 ft. n of Big Chico Creek, in vicinity of Diversion Dam, Upper Bidwell Park, Chico 152 Comment
  CHSC45902  Astragalus gambelianus Lowell Ahart; Jim Jokerst 1985-3-24 4851 Butte Serpentine Point, west of Yankee Hill. 518 Comment
  CHSC46364  Astragalus gambelianus Lowell Ahart 1989-5-10 6227 Butte Growing at the end of the dirt road that lead to Lake Oroville, about 1/12 mile north-west of the West Branch Bridge across Lake Oroville. 280 Comment
  CHSC86570  Asyneuma prenanthoides L. P. Janeway; Christine Hantelman 2003-7-3 7866 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.7 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. Steep north-facing slope above a small spring. 279 Comment
  CHSC37832  Athyrium distentifolium var. americanum R. Schlising; K. Tarp, J. F. Fuller 1982-7-18 4329 Butte N part of county, n of Philbrook Reservoir and se of Snow Mountain peak. On flanks of the mountain. 2057 Comment
  CAS-BOT-BC68695  Athyrium filix-femina var. californicum Clarence R. Quick 1952-6-29 52 -87 Butte Sierra Nevada - New Spring, 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  CHSC34238  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-28 3568 E Butte On Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  CHSC19918  Athysanus pusillus M. S. Taylor 1975-3-3 398 Butte Ca 30 ft e of Richardson Springs Rd, ca. 2 mi ne of Cohasset Rd, ca. 6 mi n of Chico. 60 Comment
  CHSC38411  Athysanus pusillus Vernon Oswald 1983-1-29 51 Butte Upper Bidwell Park, Chico, along the North Rim Trail at about the level of Horseshoe L. 140 Comment
  RSA20874  Athysanus pusillus C. B. Wolf 1937-3-29 8335 Butte Sierra Nevada foothills, 7.8 miles below Paradise on Chico Road. 152 Comment
  UC855593  Athysanus pusillus A. A. Heller 1915-2-26 17765 Butte 6 mi e of Chico (near Hog Springs) Comment
  POM143745  Athysanus pusillus C. F. Baker 1903-4-10 3027 Butte Chico. Comment
  CHSC37115  Atriplex argentea var. mohavensis L. Ahart; M. S. Taylor 1982-10-11 3862 Butte Ca. 0.1 mi se of Graylodge HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  UCD97798  Atriplex serenana A. A. Heller 1919-8-9 13350 Butte Chico. Comment
  UC1490564  Atriplex triangularis Lowell Ahart 1981-11-6 3221 Butte about 12 mi sw Gridley (just w of Pennington Road, n side of road near the entrance to the Gray Lodge Waterfowl Management Headquarters); Gray Lodge Waterfowl Management, sw of Gridley 35 Comment
  CHSC100990  Avena barbata L. P. Janeway 2008-4-2 9246 Butte Cascade Range Foothills. East edge of City of Chico; slope on north side of Humboldt Road 2.9 km northeast of Bruce Road. 167 Comment
  SEINET10517561  Avena barbata Lowell Ahart 1974-4-24 Ahart 433 Butte Along North Honcut Creek on moist sandy soil. Peter Ahart Ranch, Honcut. Foothill Woodland. 150 Comment
  CHSC92513  Avena fatua Lowell Ahart 2005-12-11 12515 Butte On the sides of small ditches, on the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Highway, about 2 1/4 miles (air) east of Biggs. 30 Comment
  SEINET3823232 Image available Avena fatua George K. Helmkamp, E. A. Helmkamp 2012-4-14 18742 Butte Northern Sacramento Valley, Robinsons Corner, Simpson Rd, just east of junction East Gridley Road and CA-70 (Honcut 7.5' Q) 23 Comment
  CHSC27  Azolla filiculoides M. Anthony 1962-2-10 Butte Oxbow Lake inlet, e. of Sacramento River. 36 Comment
  CAS-BOT-BC98009  Baccharis pilularis Sally Bianco 1995-11-19 1054 Butte Aptos. San Andreas Rd and Hwy 1 intersection 76 Comment
  POM219304  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1829 Comment
  UCR51787  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville 1677 Comment
  SEINET10839234  Balsamorhiza sagittata Mary Susan Taylor 1978-7-19 Taylor 1770 Butte On E side of Upper Scotts John Road, ca. 3 mi N of its junction with Scotts John Road, ca. 7 mi E of Jonesville. 1890 Comment
  CHSC46284  Barbarea verna Vernon Oswald 1989-5-25 3784 Butte Railroad between Pulga and Mayaro. Along the edge of the railroad right of way. 432 Comment
  CHSC20531  Berberis aquifolium var. repens Pamela Caldwell 1972-3-2 Butte CSUC campus. S side of Bidwell Mansion entrance. Comment
  CAS-BOT-BC75545  Berberis dictyota A. A. Heller 1928-3-2 14479 Butte Along Chico Creek east of Chico above the golf links. Comment
  CHSC113619  Bergia texana Lowell Ahart 2014-8-31 19799 Butte On the west side of McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile southwest of the Enterprise Bridge across the South Fork of the Feather River, about 11 miles (air) east of Oroville. 226 Comment
  CHSC42057  Bergia texana Lowell Ahart 1986-11-9 5445 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  HSC93350  Bergia texana L. Ahart 1995-7-15 7594 Butte Small wash, Peter Ahart Ranch, 1.5 mi. N and 0.75 mi. E of Honcut, 12 mi. S of Oroville 37 Comment
  RSA20872  Blennosperma nanum C. B. Wolf 1937-3-29 8333 Butte Sacramento Valley, 1/2 mile SE of Butte Creek on Chico-Oroville Rd 58 Comment
  JEPS119678  Blennosperma nanum var. nanum Lowell Ahart 2012-5-4 17988 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
  CHSC28766  Boechera breweri subsp. shastaensis J. D. Jokerst 1979-5-21 248 Butte On cliffs composing the S.E. bank of Little Chico Cr. 198 Comment
  CHSC38019  Boechera platysperma R. A. Schlising; K. Tarp 1982-7-24 4347 Butte Extreme e Butte County, e of Stirling City at Ramsey Bar on Kimshew Creek. 1341 Comment
  CAS-BOT-BC75492  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, southwest of Gridley. 35 Comment
  UCD140017  Bolboschoenus maritimus subsp. paludosus Lowell Ahart 1981-11-6 3226 Butte Gray Lodge, south-west of Gridley. 35 Comment
  UC1751224  Botrychium minganense Timothy B. Devine 1986-8-10 896 Butte beside Willow Creek 1/2 mi N of jct with Colby Mt. Road 1554 Comment
  UC1472740  Botrychium multifidum Mrs. Carlotta C. Hall 1914-7-30 9805 3-a Butte Jonesville 1524 Comment
  CDA1769  Brachypodium distachyon L. Ahart 2000-5-16 8359 Butte West of Larkin Road, about 1 1/4 miles south of the Oroville Airport. About 5 miles (air) southwest of Oroville. On the north side of the access road to the boat ramp at the Thermalito Afterbay. Comment
  CHSC86533  Brachypodium distachyon L. P. Janeway 2003-5-7 7776 Butte Northern Sierra Nevada Foothills. Kelly Ridge between Lake Oroville Visitors Center and south end of Oroville Dam. 329 Comment
  JEPS102338  Brassica napus Lowell Ahart 2001-5-10 8739 Butte 4 air miles SW of Gridley (on sides of dirt rd E of the large pump, on S side of Evans-Reimer Rd, 1 mi E of Pennington Rd, Gray Lodge Waterfowl Management Area) 22 Comment
  SEINET10940371  Brassica nigra Mary Susan Taylor 1975-3-25 Taylor 424 Butte Chico. Comment
  CAS-BOT-BC106319  Brickellia californica Lowell Ahart 1987-7-3 5762 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CHSC100874  Brickellia californica L. P. Janeway 2008-10-8 9605 Butte Cascade Range Foothills Upper Bidwell Park, Chico; north side of Big Chico Cree 455 m west of Day Camp. 91 Comment
  CHSC115414  Briza maxima M. Rogers 2013-5-14 Butte Oroville, Brad Freeman Tail off Oro Powerhouse Road next to the spillway. 80 Comment
  RSA768991  Briza maxima L. Ahart 2010-5-16 16692 Butte About 0.25 miles south of the parking area, North Table Mountain, about 4.5 air miles northeast of Oroville 369 Comment
  CAS-BOT-BC145538  Briza minor Lowell Ahart 1980-5-4 2217 Butte Near Hurleton. 600 Comment
  RSA126001  Brodiaea californica E. K. Balls 1957-5-23 22531 Butte US Hwy 99 E, 1.7 mi NW from jct with road from Pentz. 91 Comment
  CAS-BOT-BC482207  Brodiaea californica subsp. californica Ethel Wickes 1917-6-1 s.n. Butte Red Bluff Comment
  POM215689  Brodiaea californica var. californica David D. Keck 1933-5-30 2410 Butte 1 mile W of Richardson Springs. Comment
  UC1080382  Brodiaea californica var. californica E. K. Balls 1957-5-23 22531 Butte 1.7 mi nw U. S. Hwy. 99 E. jct. with road from Penta 91 Comment
  CHSC78758  Brodiaea elegans subsp. elegans L. P. Janeway 2000-5-14 6723 Butte Sacramento Valley. East side of Pine Creek Road 0.3 mi north of Pine Creek. 56 Comment
  UC726235  Brodiaea elegans subsp. elegans A. A. Heller 1941-5-9 16105 Butte below Clear Creek School House (roadside banks along Clark Road to Paradise) Comment
  SEINET10905137  Brodiaea hyacinthina Mary Susan Taylor 1973-1 Taylor 11 Butte Table Mountain, ca. 8 mi N of Oroville. Rolling Valley Grassland with thin soils over volcanic rocky flats occasionally exposed into outcrops, dropping steeply off at the sides showing basaltic columns. 373 Comment
  SEINET3884962  Brodiaea hyacinthina var. greenei D. W. McNeal 1989-4-18 3372 Butte On Table Mtn., just w. of Cherokee Rd., 6.4 mi. s. of the jct. of Hwy #70 n. of Oroville.; 0 Comment
  CHSC71203  Brodiaea minor Lowell Ahart 1988-6-9 7983 Butte West of Cherokee Road, about 50 feet southwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CAS-BOT-BC484504  Brodiaea minor A. A. Heller 1914-4-24 11321 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC484558  Brodiaea minor John Thomas Howell 1967-6-22 42607 Butte Magalia 701 Comment
  UCD139155  Brodiaea nana R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles W of Oroville. Comment
  RSA178621  Brodiaea purdyi A. A. Heller 1928-6-28 14657 Butte At Butte Meadows. Comment
  CHSC102183  Brodiaea sierrae George W. Hartwell 2009-6-6 Butte Concow Road. Plants abundant on serpentine ridge approximately 3-4 miles above Concow Reservoir. 860 Comment
  CHSC112681  Brodiaea sierrae Lowell Ahart 2013-7-1 18812 Butte Open disturbed area, about 150 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/4 miles (air) southwest of Forbestown. 737 Comment
  CHSC71463  Brodiaea sierrae Lowell Ahart 1998-7-19 8049 Butte On the southeast side of the dirt road to the Forbestown Reservoir, about 1 mile northeast of Forbestown Road, about 2 1/2 miles (air) northeast of Forbestown. 883 Comment
  SEINET3885117  Brodiaea volubilis Margaret J. Williams 1984-5-25 84- 21 -2 Butte 3.3 mi from Paradise on Honey Run Road.; 0 Comment
  CHSC40289  Bromus alopecuros Lowell Ahart 1985-5-9 4939 Butte Peter Ahart Ranch, about 1 mile north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC82407  Bromus alopecuros Lowell Ahart 2002-5-15 9662 Butte On the south side of Central House Road, about 80 yards east of the bridge across Whyman Ravine, about 1/4 mile east of Highway 70, about 12 miles southwest of Oroville. 27 Comment
  JEPS95152  Bromus alopecuros Lowell Ahart 1997-5-5 7737 Butte about 12 mi s of Oroville (about 2 mi n and 1/10 mi e of Honcut, Peter Ahart Ranch); Peter Ahart Ranch 33 Comment
  CHSC61530  Bromus carinatus Lowell Ahart 1993-6-16 6964 Butte South-west of the intersection of Black Bart Road and Forbestown Road, about 3 1/2 (air) miles south-west of Forbestown. 609 Comment
  CAS-BOT-BC149547  Bromus carinatus var. carinatus Lowell Ahart 1987-7-8 5807 Butte Along Big Bar Mountain Road, about 1 mile southwest of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  SEINET10523270  Bromus catharticus Leverton 1874-4-20 LEVERTON s.n. Butte In field across from Pleasant Valley High School on East Ave. in Chico. 34 Comment
  CHSC94291  Bromus ciliatus Lowell Ahart 2006-7-16 12975 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
  CHSC4369  Bromus diandrus M. Hillier 1966-5-30 Butte By creek at s end of Park Ave., Chico. Comment
  JEPS115993  Bromus diandrus Lowell Ahart 2009-5-8 15667 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
  CHSC109606  Bromus hordeaceus Lowell Ahart 2012-5-14 18046 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. 70 Comment
  CHSC27293  Bromus hordeaceus P. Moyer 1972-4-16 186 Butte CSUC Campus. S bank of Chico Ck., between Warner St. and New Dorm Bridge. 60 Comment
  SEINET10835844  Bromus hordeaceus P. Young 1972-5-16 Moyer 186 Butte S bank Chico Crk. between Warner St. and New Dorm Bridge. 61 Comment
  CAS-BOT-BC162465  Bromus laevipes Lowell Ahart 1985-5-15 1471 Butte 1.5 mile northeast of Concow Res.East of the dirt road, about 1.5 mile northeast of Concow Res. 800 Comment
  CHSC101292  Bromus madritensis subsp. madritensis Lowell Ahart 2009-4-17 15556 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC39490  Bromus madritensis subsp. madritensis Lowell Ahart 1983-6-21 4078 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. 425 Comment
  CHSC67409  Bromus madritensis subsp. rubens James D. Jokerst; R. A. Schlising 1985-4-8 2219 Butte Serpentine Point W of and adjacent to Hwy. 70 ca. 0.5 mi S of Lunt Rd. Near summit near edge of outcrop. 548 Comment
  RSA591528  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville. 1524 Comment
  CAS-BOT-BC162206  Bromus orcuttianus Lowell Ahart 1987-7-8 5796 Butte Along Big Bar Mountain Road, about 3 miles southwest of Coyote Gap, soutehast of Pulga. 1280 Comment
  CAS-BOT-BC161610  Bromus sterilis Lowell Ahart 1987-5-6 5554 Butte At the Poe Power House along the North Fork of the Feather River, about 2 miles southeast of Jarbo Gap. 283 Comment
  JEPS106270  Bromus suksdorfii Lowell Ahart 2004-8-2 11333 Butte On both sides of the dirt County Road, between the Sky High Mine and Dresser Camp, about 2 miles (air) southeast of the Philbrook Reservoir Dam, about 7 miles (air) southeast of Butte Meadows 1912 Comment
  CDA1860  Bromus tectorum L. Ahart 2003-5-9 10120 Butte South side of Evans Reimer Road, about 3/4 mile west of Block Road, 3 miles (air) southwest of Gridley. Comment
  JEPS120094  Bromus tectorum Lowell Ahart 2012-6-14 18187 Butte On the south side of the path, south of CARD Community Center, Lower Bidwell Park, Chico. Comment
  CHSC88247  Bromus vulgaris Lowell Ahart 2004-7-11 11231 Butte On the east side of the road, on the northeast side of Paradise Lake, about 1/8 mile southeast of Mosquito Creek, about 4 miles (air) southwest of Stirling City. 814 Comment
  LA13082  Bromus vulgaris E. B. Copeland; 1929-7-22 sn Butte Jonesville 1500.0 Comment
  SEINET10524080  Bromus vulgaris Edwin B. Copel 1929-7-22 Copeland 336 Butte Jonesville. In brush and low woods. 1500 Comment
  CHSC38627  Calandrinia ciliata Vernon Oswald 1983-2-26 103 Butte Upper Bidwell Park, Chico, along the edge of the North Rim Trail at the level of Horseshoe Lake. 140 Comment
  CHSC25120  Calandrinia ciliata var. menziesii G. G. Poulsen Jr. 1971-4-13 9 Butte Ca 2 mi n. of Oregon City turn off on Cherokee Rd. Grows in clusters in open fields and in shaded areas. 426 Comment
  CHSC45837  Calocedrus decurrens Lowell Ahart 1973-1-14 147 Butte Along the edge of the dirt road to Forbestown Reservoir, about 3 miles northeast of Forbestown. 762 Comment
  CHSC4675  Calochortus albus R. Carter 1966-4-30 385 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  POM225869  Calochortus albus J. H. Morrison 1932-5-30 SN Butte Durham. Comment
  SBBG115423  Calochortus albus D. Alenick 1998-4-25 13 Butte outside of Cherokee, NW of Lake Oroville 381 Comment
  SEINET3992462  Calochortus maculatus A. A. Heller 1940-4-29 15565 Butte Edge of thickets on the Clark Road about 2 miles west of Paradise Comment
  CHSC31357  Calochortus monophyllus Stephen M. Turek 1980-4-18 21 Butte Ca. 2 yds s of Cohasset Rd, 3.3 mi e of Keefer Rd, 4.8 mi e of Chico. 137 Comment
  UCD13238  Calochortus superbus Ray 1974-5-17 53 Butte Lake Oroville State Recreation Area, near visitor center in Kelly Ridge area. 152 Comment
  CAS-BOT-BC494318  Calochortus tolmiei Mrs. J. H. Morrison 1932-4-17 s.n. Butte Durham Comment
  CHSC53699  Caltha leptosepala var. biflora Kirsten Tarp 1983-8-12 346 Butte Philbrook Reservoir. Near streamlet in meadow. 1706 Comment
  UC1876194  Calycadenia fremontii Gerald D. Carr 1971-6-15 561 Butte 1.6 mi W of E boundary of Upper Bidwell Park, SE of Chico. Comment
  UC365835  Calycadenia fremontii unknown 1879-8-1 Butte near Chico Comment
  CAS-BOT-BC270007  Calycadenia multiglandulosa Lowell Ahart 1976-9-18 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC71459  Calycadenia multiglandulosa Lowell Ahart 1998-7-19 8047 Butte Along Hurleton Swedes Flat Road, 1 1/2 miles (air) south of Hurleton, about 11 miles (air) southeast of Oroville. 487 Comment
  CAS-BOT-BC106087  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 miles south of Berry Creek Inn 609 Comment
  CAS-BOT-BC106125  Calycadenia oppositifolia David D. Keck 1930-7-25 975 Butte Hurleton, ten miles east of Oroville, on Forbestown Road, eastern Butte County. 487 Comment
  CHSC30687  Calycadenia oppositifolia M. S. Taylor; L. Ahart, J. Jokerst 1979-6-12 2294 Butte Magalia serpentine area rd to Feather River, ca. 0.5 mi up from the river. 670 Comment
  JEPS33811  Calycadenia oppositifolia C. C. Parry 1882-1-1 Butte Chico Comment
  UC1748340  Calycadenia oppositifolia L. P. Janeway 1999-10-15 6628 Butte 0.25 mi N-NW of Lime Saddle (between Nelson Bar Road and Lake Oroville); Northern Sierra Nevada Foothills 281 Comment
  CAS-BOT-BC270885  Calycadenia spicata John Thomas Howell 1962-6-15 37421 Butte 5 miles W of Oroville Comment
  CHSC28681  Calycadenia spicata M. S. Taylor 1979-5-6 1998 A Butte Lowell Ahart Ranch, Honcut. 45 Comment
  UCD23262  Calycadenia spicata W. R. Powell 1968-5-17 1509 Butte 4 miles NNW of Rackerby along new Oro-Feather Falls Road. 548 Comment
  UC913063  Calycadenia truncata David D. Keck and J. Clausen 1935-6-25 3778 Butte 2.2 mi s, on road to Yankee Hill Flea Valley Comment
  POM253181  Calycadenia truncata subsp. truncata A. A. Heller 1938-6-14 15152 Butte 23 miles from Oroville on the Feather River Highway. Comment
  CHSC117664  Calycanthus occidentalis Lowell Ahart 2016-8-30 21318 Butte In ravine on the north side of La Porte Road, about one mile west of Marysville Road, about 4 miles (air) southwest of Brownsville. 609 Comment
  HSC103795  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8695 Butte Northern High Sierra Nevada/High Cascade Range. 1.1 km. N of De Sable Reservoir, where Ponderosa Way (Understock Road) crosses the confluence of Butte Creek Canal and Hendricks Canal. 847 Comment
  CHSC70521  Calystegia occidentalis subsp. fulcrata R. A. Schlising 1972-5-4 3064 Butte W of Wrightwood in Angeles National Forest; at Grassy Hollow Campground, 2.6 mi W of junction N2 and Angeles Crest Hwy at Big Pines Station. Comment
  CHSC68904  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte South side of the dirt road, southeast of cCold 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
  CAS-BOT-BC496958  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  RSA4633  Camassia leichtlinii subsp. suksdorfii E. B. Copeland 1930-6-27 408 Butte Jonesville 1550 Comment
  RSA69294  Camassia leichtlinii subsp. suksdorfii Frank W. Peirson 1926-6-21 6768 Butte Butte Meadow, Humboldt Road. Comment
  CHSC19698  Camissonia contorta S. K. Ray 1971-5-1 25 Butte Ca. 10-15 yds from shoreline of a dredger pond ca. 1/4 mi n by ne of the e end of Walnut Ave, ca. 3 mi e of Gridley. Comment
  SFV11710  Campanula exigua M. L. Vincent 1963-6-8 396 Butte Sierra Nevada Honey Run Road. West of Paradise. Comment
  SEINET10463077  Campanula prenanthoides Mary Susan Taylor 1980-9-12 Taylor 3336 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
  SEINET10939006  Campanula prenanthoides Hall Hall 9797 Butte Butte Meadows, transition zone. 1311 Comment
  CHSC113302  Capsella bursa-pastoris Lowell Ahart 2014-4-9 19326 Butte Rice field road, 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
  CHSC33218  Cardamine breweri R. A. Schlising; R. Banchero 1981-5-20 4057 Butte E of Oroville and E of Feather Falls, along road to Fall River Campground. 1158 Comment
  CHSC38419  Cardamine californica var. californica Vernon Oswald 1982-12-23 31 Butte Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. Near the creek. 207 Comment
  CHSC34479  Cardamine oligosperma M. S. Taylor 1975-4-26 521 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi se of Paradise. 609 Comment
  JEPS116041  Cardamine oligosperma Lowell Ahart, John Dittes 2009-3-20 15505 Butte Open area along the Guardian Rock Trail, about 150 yards southwest of the Ten Mile House Road Trail, about 300 yards west of Highway 32, west of the intersection of Highway 32 and Ten Mile House Road, Upper Bidwell Park, about 10 miles northeast of Chico 407 Comment
  UCD114565  Cardamine oligosperma M. S. Taylor 1981-4-5 3498 Butte at end of Dark Canyon Road near Turnout and restroom, up from boat ramp to W Br Feather River, 3.5 miles south of Big Bend Roads junction, 5 air miles south of Jarbo Gap on Highway 70. 304 Comment
  SEINET10448555  Cardamine oligosperma Mary Susan Taylor 1981-3-16 Taylor 3414 Butte T21N R4E southcenter sec 16; Cherokee q. E side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. Foothill Woodland; 1000 ft. 305 Comment
  CHSC102187  Cardamine pachystigma George W. Hartwell 2009-3-14 Butte Rim Road, approx. 1.5 miles NW of SR 70 in an area burned by the Butte Lightening Complex wildfire, summer 2008. 885 Comment
  CHSC101492  Cardamine pachystigma var. dissectifolia Samantha Mackey Hillaire 2007-4-17 1250 Butte DeSabla Powerhouse Road, Butte Creek Canyon, approximately 1 mile SW of DeSabla Reservoir. UTM 10 618377E, 4414780N. 463 Comment
  CHSC39609  Cardamine pachystigma var. pachystigma Lowell Ahart 1983-3-28 3906 Butte About 1/2 mile south-west of the Forbestown Res., along the road where there is a serpentine slide area, about 4 miles north-east of Forbestown. 450 Comment
  CHSC113409  Carex abrupta Lowell Ahart 2014-7-10 19636 Butte About 80 yards south of Philbrook Road, about 1 1/4 miles west of Philbrook Reservoir. 1648 Comment
  CHSC99414  Carex amplectens Robert F. C. Naczi; Lawrence P. Janeway 2004-7-24 10530 Butte Ca. 6 mi ENE of village of Butte Meadows, along Scotts John Creek, near its crossing by Forest Service Road 26N27. 1740 Comment
  CHSC34165  Carex amplifolia Lowell Ahart 1981-9-21 3195 Butte On bottom of French Creek, ca. 1 mi w of Sly Creek Reservoir. 1300 Comment
  CHSC94002  Carex amplifolia R. D. Fischer 2004-6-20 782 Butte Sierra Nevada Mountains, north-east corner of Butte County and ca. 4 miles north of Butte Meadows off Scout Road. Boy Scout Camp. In drainage ditch at north end of camp where Scout Road passes through Chico Meadows. 1371 Comment
  SEINET10467019  Carex amplifolia Lowell Ahart 1983-9-17 Ahart 4439 Butte T24N R4E section 34. Ca. 1/4 mi se of Stirling City. Yellow Pine Forest; 1100 m. 1100 Comment
  CHSC37757  Carex angustata J. D. Jokerst; R. A. Schlising 1982-10-7 1649 Butte West of and adjacent to the Skyway (not conspicuous from road) 1.1 miles south of Inskip. 1432 Comment
  CHSC84747  Carex angustata L. P. Janeway 2003-6-8 7823 Butte High Cascade Range. Flea Valley: meadow at head of Concow Creek. 1091 Comment
  JEPS106369  Carex angustata Lowell Ahart 2004-8-2 11327 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
  JEPS110403  Carex angustata Lowell Ahart 2006-8-15 13180 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
  UC478551  Carex angustata E. B. Copeland 1930-8-10 609 Butte Jonesville 1500 Comment
  CHSC113513  Carex athrostachya Lowell Ahart 2014-7-7 19578 Butte North of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  SEINET10955616  Carex athrostachya Edwin B. Copel 1929-7-28 Copeland 607 a Butte Jonesville. 1550 Comment
  CHSC89826  Carex barbarae L. P. Janeway; B. Castro 2004-6-13 8136 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. Growing in and up out of dry shallow roadside ditch about 20 m away from small creek. 829 Comment
  CAS-BOT-BC19413  Carex bolanderi Lewis S. Rose 1963-6-5 63140 Butte North Fork of Feather River. Arch Rock Tunnel. 487 Comment
  JEPS114825  Carex bolanderi Lowell Ahart 2008-6-2 14806 Butte On the south side of Ponderosa Way, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles (air) northwest of Forbestown 670 Comment
  SEINET7552592 Image available Carex bolanderi Robert F. C. Naczi, Anton A. Reznicek 2006-8-1 11400 Butte Jonesville, along Jones Creek, just NE of the historic Jonesville Inn, lightly shaded wet soil at edge of perennial creek 1535 Comment
  SEINET7552625 Image available Carex bolanderi Robert F. C. Naczi, Lawrence P. Janeway 2004-7-24 10522 Butte ca. 2.5 mi NE of village of Butte Meadows along E side of Butte Creek, downslope from (W of) Humboldt Road 1396 Comment
  CAS-BOT-BC19414  Carex bolanderi L. P. Janeway 1987-6-20 2258 Butte North Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge. 975 Comment
  HSC87062  Carex cusickii L. P. Janeway 1988-7-29 3110 Butte S side of Butte Creek, 1/2 mi. W of Cherry Hill 1402 Comment
  CHSC107569  Carex cyrtostachya Lowell Ahart 2011-8-19 17635 Butte On the south side of a good forest road, on the east side of Know-northing Creek, in low area on the north side of Lumpkin Ridge Road, about 1/2 mile southwest of the intersection of Lumpkin Ridge Road, County Road and road to Cascade, about 5 miles (air) northeast of Feather Falls. 1252 Comment
  RSA0034287  Carex cyrtostachya Lowell A. Ahart 2000-7-7 8558 Butte North side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  SD257096  Carex cyrtostachya Lowell Ahart 2000-7-7 8558 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, ca. 1.0 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, ca. 4.0 miles (air) northeast of Feather Falls. 1219 Comment
  CHSC102834  Carex densa Lowell Ahart 2009-6-3 15818 Butte 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
  CHSC65784  Carex densa Vernon H. Oswald 1996-4-10 7346 Butte Sacramento River National Wildlift Refuge, Llano Seco Unit. U.S. Fish and Wildlife Services parcel between 7 Mile Lane and the Sacramento River. In a shallow roadside ditch on the S side of the ranch road at the N end of Tract 7.2, Sanctuary 1. Sacramento Valley. 33 Comment
  JEPS104172  Carex densa Lowell Ahart 2003-5-27 10220 Butte About 100 yd w of the dirt road, w of Diversion Dam on Big Chico Creek, w of Parking Area L, Upper Bidwell Park, ca 3 1/2 mi e of Manzanita Avenue Chico. 121 Comment
  JEPS116020  Carex densa Lowell Ahart 2009-6-3 15818 Butte 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
  SEINET8027623 Image available Carex echinata L. Janeway, Gog, L 2008-1 3196 (A & B) Butte Pat's Meadow. Along Butte Creek, 0.6 mi W of Cherry Creek Campground. Comment
  CHSC50350  Carex echinata subsp. echinata Vernon Oswald 1990-5-14 4209 Butte Small lake located ca. 1 mile south of Brush Creek. 996 Comment
  JEPS117594  Carex echinata subsp. echinata Lowell Ahart 2010-9-28 17265 Butte On the south edge of a 10 acre meadow, about 100 yards east of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1886 Comment
  CHSC105486  Carex feta B. Castro 2010-6-19 100028 Butte Northern High Sierra Nevada. Along Bean Creek Road 0.4 km northwest of spur road to Dome Trail trailhead; 1.2 km south-southwest of Bald Rock Dome; on ridge between Middle Fork Feather River and Bean Creek. 883 Comment
  CHSC45711  Carex feta L. P. Janeway 1987-6-8 2183 Butte South-draining seep along dirt road, 3.0 mi S of Big Bar Mtn. 1021 Comment
  UC532225  Carex fracta H. F. Copeland 1930-7-21 1367 Butte Jonesville 1524 Comment
  CAS-BOT-BC21239  Carex fracta L. P. Janeway 1988-6-25 2862 Butte The Carices of Butte County. Near Coon Creek and near Bull Hill Road 1.0 mile from Skyway. 1554 Comment
  JEPS95613  Carex gracilior Lowell Ahart 1994-4-29 7291 Butte 12 mi SE of Oroville (W side of North Honcut Creek, 2 1/2 mi N and 2 3/4 mi E of Honcut) 54 Comment
  SEINET10927770  Carex gracilior Lowell Ahart 2007-4-16 Ahart 13675 Butte T17N, R4E, northeast 1/4 Section 11. On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 2/3 miles east of Honcut, abouth 12 miles southeast of Oroville. 52 Comment
  SEINET4231863 Image available Carex gracilior Unknown 2009-1 24509 Butte SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70, Cascade Range Highlands. Comment
  UC1748286  Carex heteroneura L. P. Janeway 1999-7-17 6508 Butte Along Scotts John Creek 0.2 mi N of the road that connects Humboldt Road and Humbug Road. 1749 Comment
  HSC87064  Carex heteroneura L. P. Janeway, Robert A. Schlising 1988-7-22 3065 Butte Upper reaches of Philbrook canyon, 0.7 mi. W of the pass 1890 Comment
  CHSC47056  Carex hirtissima L. P. Janeway 1989-5-17 3256 Butte Along rd to Forbestown Diversion Dam 2.2 mi from Forbestown Rd. 853 Comment
  JEPS103107  Carex hoodii L. P. Janeway, B. Castro 2002-7-7 7619 Butte High Cascade Range. Along logging spur road, 0.5 km east of the County Road (Forest Service Road 25N02); 3.4 km northeast of Bald Mountain Lookout and 1.6 km southwest of Jones Meadow 1829 Comment
  CAS-BOT-BC7558  Carex integra H. F. Copeland 1946-7-4 s.n. Butte Jonesville. Comment
  CHSC46462  Carex integra V. Oswald; L. Ahart 1989-6-27 3831 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. 1767 Comment
  CHSC52913  Carex integra L. P. Janeway; R. A. Schlising 1988-7-16 3019 Butte Forest floor between the Humboldt-to-Humbug Road, Butte Creek House, and Humbug Road. 1798 Comment
  SEINET4231761 Image available Carex integra L. Janeway, Gog, L 2008-1 3184 A Butte Near Cornelia Lott Sank Memorial Spring. Comment
  CDA30227  Carex inversa L. P. Janeway 2009-11-16 9967 Butte Sacramento Valley.; Oroville: south side of Broderick Street between Pine Street and Elma Street. At edges of old lawn between the two buildings of the Chinese Temple and Museum. Comment
  JEPS110203  Carex jonesii Lowell Ahart 2006-7-16 12992 Butte On the west edge 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
  CHSC42690  Carex laeviculmis L. P. Janeway 1987-6-27 2342 Butte Along Little Kimshew Cr 0.7 mi north of the Concow Rd. 1508 Comment
  CHSC84921  Carex lemmonii L. P. Janeway 2003-7-13 7902 Butte High Cascade Range. Meadow along southeast side of Humbug Summit Road, at the Cornelia Lott Sank Memorial Spring. 1519 Comment
  CHSC43876  Carex multicaulis L. P. Janeway; C. A. Janeway 1986-8-31 1802 Butte South side of hwy 32, 19 mi E of hwy 99; near Platte Mtn Lookout CDF fire station. 1066 Comment
  RSA325125  Carex multicaulis M. S. Taylor 1981-3-24 3435 Butte Two mile stretch along both sides of Feather River Highway (70), just NE of Pulga to Cresta Powerhouse, ca. 20 miles NE of Oroville. 518 Comment
  CAS-BOT-BC119745  Carex nebrascensis A. A. Heller 1928-6-16 14615 Butte Butte Meadows. Comment
  CHSC52250  Carex nudata L. P. Janeway 1988-4-10 2619 Butte Along Clear Creek just north of Durham-Pentz Rd. 80 Comment
  CHSC44947  Carex simulata L. P. Janeway; R. A. Schlising 1988-8-2 3150 Butte Ca 1 1/2 air mi NW of Butte Meadows; along Cascade Cr ca 1/2 mi upstream of the Soda Springs USFS campground. 1143 Comment
  SEINET7575671 Image available Carex specifica Robert F. C. Naczi, A. A. Reznicek 2006-8-1 11385 Butte Northernmost part of county, ca 3.2 mi NNE of Jonesville, ca 8 mi NE of community of Butte Meadows, N slopes of Humboldt Peak, near summit. 2118 Comment
  UC1609335  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte about 1/4 mi w Lost Creek Reservoir (on the n side of the dirt road) 1036 Comment
  CAS-BOT-BC116737  Carex subfusca Herbert Faulkner Copeland 1929-7-20 611 Butte Jonesville, in woods by Jones Creek. 1500 Comment
  CAS-BOT-BC116747  Carex subfusca R. Tallent 1987-8-18 956 Butte Lassen National Forest. Along Feather River N of Stirling City. 1036 Comment
  CDA13902  Carex subfusca G. F. Hrusa, T. D. Wilfred 1997-5-8 13759 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia, above Magalia Res. Immed. E of Holmwood Drive. Comment
  CHSC36883  Carex subfusca J. D. Jokerst; R. A. Schlising 1982-9-7 1658 A Butte Coon Hollow along the edges of forest service road 26N74 ca 1/2 mi W of the West Branch Feather River. N of Philbrook Resv. Comment
  CHSC45043  Carex subfusca Vernon Oswald 1983-7-19 878 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  SEINET4954932 Image available Carex subfusca Unknown 1987-8-18 954 Butte Lassen National Forest. Along Jones Creek, NE of Jonesville Comment
  SEINET259924  Carex subfusca M. S. Taylor 1978-7-21 1812 Butte On S side of Oroville-Quincy Hwy ca. 14 mi N of Lake Madrone ca. 24 mi NE of Oroville 1463 Comment
  SEINET11635243  Carex texensis L. P. Janeway 1989-1 3270 Butte Campus of California State University, Chico, N side of Big Chico Cr opposite Holt Hall 58 Comment
  CHSC94299  Carex utriculata Lowell Ahart 2006-7-16 13010 Butte Bog, in the 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
  UC1108007  Carex vesicaria H. F. Copeland 1932-8-19 Butte foot Butte Creek Crest Comment
  CHSC43868  Carex whitneyi Vernon Oswald 1983-8-17 985 Butte Humboldt Summit on Humboldt Rd. n-e of Jonesville at the jct. of Butte, Tehama, and Plumas Counties. 1999 Comment
  CDA13904  Carex xerophila G. F. Hrusa, T. D. Wilfred 1997-5-8 13761 Butte Sierra Nevada; Above Little Butte Creek, N of Magalia. Immed. E of Holmwood Drive. Comment
  CHSC47014  Carex xerophila Gail Kuenster 1989-6-4 Butte On top of serpentine ridge NW of and above the upper end of Magalia Reservoir. 762 Comment
  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
  JEPS121792  Carex xerophila L. P. Janeway 2006-5-14 8595 Butte Northern High Sierra Nevada. Magalia Serpentine; east side of Coutolenc Road, between that road and the first bend in the road down to the Magalia 73 Dam. Comment
  SEINET10549992  Castilleja Mary Susan Taylor 1980-4-6 Taylor 2434 Butte T8N R5E ec border sec 3. Junction of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi E of Oroville-Bangor Hwy, ca. 10 mi SE of Oroville. With L. Ahart & J.D. Jokerst. 366 Comment
  CHSC67389  Castilleja affinis James D. Jokerst; R. A. Schlising 1985-4-8 2225 Butte Feather River Serpentine near Hwy. 70 on unnamed road ca. 0.25 mi N of Parkhill Rd., ca. 50 m E of BM 2089. 579 Comment
  CAS-BOT-BC249588  Castilleja applegatei subsp. pinetorum Mrs. Eva Pattee 1923-5-15 s.n. Butte Shady Rest near Cresta Comment
  CHSC114975  Castilleja applegatei subsp. pinetorum Lowell Ahart 2015-4-18 20055 A Butte On the east side of the road to Forbeestown Reservoir, about 1/4 mile southwest of the Forbestown Reservoir, about 3-1/2 miles (air) northeast of Forbestown. 573 Comment
  SBBG128864  Castilleja attenuata G. K. Helmkamp, E. A. Helmkamp 2012-4-14 18750 Butte Cox Lane, 1.3 mi W of its intersection with La Loma Way, ca. 10.3 mi ENE (82 deg ) of Gridley 91 Comment
  OBI9383  Castilleja attenuata Lewis S. Rose 1967-5-6 67055 Butte Oroville 52 Comment
  CHSC28689  Castilleja campestris subsp. campestris M. S. Taylor 1979-5-6 1999 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UC138981  Castilleja exserta E. B. Copeland 1903-4-10 3035 Butte Chico Comment
  CHSC103961  Castilleja lacera Lowell Ahart 2010-5-7 16625 Butte On both sides of Guardian Trail, about 1/2 mile west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 238 Comment
  SEINET10744784 Image available Castilleja lacera A. Arthur Heller, H. E. Brown 1902-5-6 Heller 5459 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC241128  Castilleja miniata E. B. Copeland 1929-7-25 s.n. Butte Jonesville 1500 Comment
  LA209237  Castilleja miniata E. B. Copeland; 1929-7-25 Butte Jonesville 1500.0 Comment
  UC492735  Castilleja miniata H. F. Copeland 1930-7-25 Butte Jonesville; meadow below cabin Comment
  UC885346  Castilleja miniata A. A. Heller 1938-7-20 15280 Butte 7 mi e Chaparral (upper end of Snag Lake); Snag Lake 1524 Comment
  CHSC1724  Castilleja pruinosa H. Summers 1929-3-11 Butte Richardson Springs Road. 152 Comment
  UC1032477  Castilleja pruinosa J. E. Sowder, A. E. Wieslander 1933-6-24 92 Butte 0.5 mi e Inskip; Chico Quad. 1432 Comment
  POM193336  Castilleja tenuis E. B. Copeland 1930-7-24 470 Butte Jonesville. 1500 Comment
  UC128777  Castilleja tenuis Miss Kate Conger 1907-1 Butte Brush Creek Comment
  UC532168  Castilleja tenuis Herbert F. Copeland 1934-7-9 Butte edge of Butte Creek Meadows (Jonesville Region); Jonesville Region Comment
  CAS-BOT-BC56923  Ceanothus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada. 5 mi. below Magalia on Oroville Road 609 Comment
  CAS-BOT-BC56924  Ceanothus Carl B. Wolf 1941-7-23 11049 Butte Northern Sierra Nevada. 5 mi. below Magalia on Oroville Road 609 Comment
  CAS-BOT-BC48548  Ceanothus cordulatus E. B. Copeland 1929-7-14 382 Butte Jonesville 1550 Comment
  CAS-BOT-BC49257  Ceanothus cuneatus Lewis S. Rose 1945-5-12 45024 Butte Richardson Springs 304 Comment
  CAS-BOT-BC50782  Ceanothus integerrimus Ira L. Wiggins 1925-3-25 1451 Butte Two and one half miles above Pence on Pence-Magalia Road Comment
  CHSC37620  Ceanothus integerrimus T. B. Devine 1979-7-8 583 Butte Along Hwy 32, ca. 1/2 mi below T.V. cable antenna, ca. 11 mi N of Chico. Comment
  CHSC64129  Ceanothus integerrimus Michael Deal 1992-4-19 5 Butte Private property, 449 Castle Drive, w of Laurel St., Paradise. 609 Comment
  JEPS34380  Ceanothus integerrimus Rimo Bacigalupi and L. R. Heckard 1963-5-14 8856 Butte ca 1 mi below and w Paradise (along Honey Run Rd) Comment
  SACT002936  Ceanothus integerrimus H. Wiedman, I. Thompson 1959-3-25 Butte Comment
  UC1094003  Ceanothus integerrimus Lewis S. Rose 1955-6-15 55099 Butte Paradise Comment
  POM196019  Ceanothus integerrimus var. macrothyrsus E. B. Copeland 1929-7-14 838 Butte Jonesville. 1650 Comment
  RSA253290  Ceanothus integerrimus var. puberulus A. A. Heller 1938-5-28 15126 Butte Along the Feather River Hwy in granite near Pulga. 421 Comment
  CAS-BOT-BC51148  Ceanothus lemmonii John Thomas Howell 1962-6-15 37446 Butte Magalia 731 Comment
  CAS-BOT-BC52012  Ceanothus prostratus John Thomas Howell 1962-6-15 37449 Butte Magalia 731 Comment
  CHSC11992  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville. 1600 Comment
  UC202361  Ceanothus prostratus H. M. Hall 1914-7-31 9822 Butte Humboldt Road 1066 Comment
  UC726726  Ceanothus prostratus A. A. Heller 1941-6-22 16179 Butte Cohasset Comment
  CDA18893  Centaurea melitensis H. D. Riley 1999-6-2 PDR 1145795 Butte vicinity of Oroville appr. 1/3 mile SW of intersection of Pentz-Magalia Hwy and Hwy 70. 0 Comment
  CHSC102841  Centaurea melitensis Lowell Ahart 2009-6-30 15966 Butte About 150 yards north of a small drainage, along the Guardian Rock Trail, about 150 yards southwest of Pine Trail, about 1/2 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico. 398 Comment
  JEPS98719  Centaurea melitensis Lowell Ahart 2000-5-31 8414 Butte 3 mi SE of Paradise (a serpentine ridge 200 yards E of where Kunkle Creek enters Lake Oroville, E of Kunkle Power House) 335 Comment
  CAS-BOT-BC272095  Centaurea melitensis A. A. Heller 1914-7-13 11566 Butte Mt. Ida ranch 10 miles east of Oroville in a field Comment
  CHSC97333  Centaurea solstitialis L. P. Janeway 2007-7-30 9147 Butte Northern High Sierra Nevada. Plumas National Forest; mid-slope of Mountain Spring House Ridge above South Branch Feather River, along the road to Milsap Bar. 1204 Comment
  CAS-BOT-BC284504  Centaurea solstitialis Herman Knoche 1919-11-19 3053 Butte Chico, Sacramento River Comment
  UCD130088  Centaurea solstitialis A. A. Heller 1914-8-13 11679 Butte Chico. Comment
  CHSC105610  Centaurea stoebe subsp. micranthos L. P. Janeway 2010-8-5 10136 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N48 (closed) about 300 m south of Milsap Bar Road; 1.1 km northwest of Middle Fork Feather River and 2.7 km southeast of Brush Creek town.) 996 Comment
  CHSC102170  Centaurium muehlenbergii Lowell Ahart 2009-6-30 15977 Butte On dry soil, along a small flowing stream, meadow, about 55 yards southeast of the gate, about 45 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
  CHSC102166  Centaurium tenuiflorum Lowell Ahart 2009-6-19 15943 Butte On dry soil, north of a trail to pond and table, on the east side 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
  CHSC650  Centaurium tenuiflorum R. M. Staley 1952-7-4 Butte Honey Run. 304 Comment
  JEPS93821  Centaurium venustum Lowell Ahart 1998-7-1 8021 Butte about 7 air mi n of Oroville (nw of the Ione oak tree, about 1/8 mi nw of the cow chute on the w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC98895  Centranthus ruber L. P. Janeway 2007-12-11 9223 Butte Northern Sierra Nevada Foothills. Southeast side Feather River, east side Table Mountain Blvd bridge. Growing among rock outcrops just above river high water line. 40 Comment
  CAS-BOT-BC288534  Centromadia fitchii John Thomas Howell 1959-9-20 34682 Butte Eastern outskirts of Oroville 60 Comment
  CDA13342  Cephalanthera austiniae G. F. Hrusa, T. D. Wilfred 1996-7-9 13190 Butte Sierra Nevada; Above spring on 23N15, approx. 100 m to S of Hwy 162 across from entrance to Rogers Cow Camp. Comment
  CHSC8615  Cephalanthera austiniae Burgon 1968-7-2 Butte Soda Springs Camp Ground. 1127 Comment
  UC143598  Cephalanthera austiniae Mrs. R. M. Austin July 1896 7 Butte Butte Creek Comment
  JEPS119723  Cephalanthus occidentalis Lowell Ahart 2012-7-5 18278 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. Comment
  SEINET10784326  Cephalanthus occidentalis Carol L. Kelloff 2006-7-29 Kelloff 1423 Butte Chico. University of Chico campus along the Big Chico Creek. 56 Comment
  JEPS12459  Cephalanthus occidentalis var. californicus H. A. Dutton 1921-1 Butte Hooker Oak Chico (Chico) Comment
  CAS-BOT-BC388175  Cerastium fontanum Lowell Ahart 1981-9-15 3160 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CHSC94262  Cerastium fontanum subsp. vulgare Lowell Ahart 2006-7-16 12983 Butte In the west edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  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-BC388259  Cerastium glomeratum A. A. Heller 1914-3-7 11187 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC388268  Cerastium glomeratum Robert Kehlor 1951-5-6 46 Butte J. M. Kehlor ranch, 6 1/4 miles east of Oroville Comment
  CAS-BOT-BC251514  Cercis occidentalis Camille F. Nowell 2012-7-16 47 Butte Hwy 32 approx 13 mi NE of Chico. 433 Comment
  CHSC26457  Cercis occidentalis P. Moyer 1972-3-11 120 Butte CSUC Campus. E side of Cafe bridge, n bank of Chico Ck. 60 Comment
  CHSC90504  Cercis occidentalis Suzanne Peters 1988-3-22 22 Butte S side of Butte Creek, vic. Covered Bridge, ca. 7 mi ese of Chico. 121 Comment
  CHSC1543  Cercocarpus betuloides var. betuloides E. Carlson 1937-4-12 Butte Site of Ten-mile House, Humbolt Road. 426 Comment
  CHSC23676  Chaenactis glabriuscula var. megacephala M. S. Taylor 1976-4-27 1099 Butte On s side of Ponderosa Way, ca. 4 mi e of junc of Villas Rd and Cohasset Hwy, ca. 23 mi ne of Chico. In ledge overlooking canyon. 609 Comment
  SEINET10483787  Chamaebatia foliolosa Mary Susan Taylor 1981-5-7 Taylor 3630 Butte T20N R6E ne sec 33, Forbestown quad. N side of Ponderosa Way, N of the Sucker Creek bridge, ca. 4 air mi SW of Feather Falls community. Yellow Pine Forest; 1200 ft. 366 Comment
  CHSC104005  Chamaecyparis lawsoniana Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 2010-5-28 16741 Butte On the south side of the path, about 30 yards south of the Cedar Grove Parking Area in lower Bidwell Park, Chico. 67 Comment
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Jul 25 2018
  CHSC6011  Chamaecyparis lawsoniana M. MacArthur 1968-4-19 253 Butte Front lawn of Administration bld., near First Street, Chico State College. 60 Comment
  UCD159526  Chamaemelum fuscatum D. S. Park 2011-4-6 275 Butte Near Oroville. Off Jem Rd. Growing in abundance in and nearby orchards and roadside. 44 Comment
  CHSC102522  Chamaesyce maculata Lowell Ahart 2009-10-7 16407 Butte Larkin Road access to the Thermalito Afterbay, about 5 miles (air) southwest of Oroville. 41 Comment
  CHSC109761  Chamaesyce maculata Lowell Ahart 2012-10-20 18498 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  JEPS94872  Chamaesyce ocellata subsp. ocellata Lowell Ahart 1998-9-11 8058 Butte about 7 air mi n of Oroville (about 1/4 mi w of the cow chute on w side of Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 388 Comment
  CHSC113147  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 2013-11-13 19235 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC51365  Chamaesyce serpillifolia subsp. serpillifolia Vernon Oswald; Lowell Ahart 1990-10-11 4457 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. On the edge of the ramp road below the high-water line of the lake. 265 Comment
  JEPS95806  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1999-10-28 8310 Butte large disturbed area along the east side of the Sacramento River; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  UC1609291  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1993-7-22 7081 Butte 6 air mi ne Feather Falls (w of the bridge, along Fall River) 1036 Comment
  CAS-BOT-BC66361  Cheilanthes covillei Lowell Ahart 1983-5-28 4024 Butte about 1/4 south of the over-look to Feather Falls, about 5 1/4 miles north of the town of Feather Falls 600 Comment
  UC474227  Cheilanthes gracillima H. F. Copeland 1920-5-22 Butte Jonesville Comment
  SEINET10872452  Cheilanthes siliquosa Lowell Ahart 1985-5-15 Ahart 4999 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. Comment
  JEPS121260  Chenopodium album Lowell Ahart 2013-11-18 19277 Butte Below the high water line of Lake Oroville, about 200 yards NE of the boat ramp at the end of Stringtown Road, on the N side of the road, about 2.5 air miles NE of Hurleton. Comment
  UC1563281  Chenopodium album Lowell Ahart 1990-9-30 6609 a Butte s side of creek about 1/8 mi e Canyon Creek Bridge across Lake Oroville (below high-water line of lake); Lake Oroville, East Fork of Canyon Creek 243 Comment
  JEPS95916  Chenopodium ambrosioides var. ambrosioides Lowell Ahart 1999-8-22 8183 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET10871671  Chenopodium ambrosioides var. anthelminticum Mary Susan Taylor 1977-8-16 Taylor 1445 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CDA3047  Chenopodium botrys L. Ahart 2006-9-11 13282 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. Comment
  JEPS110079  Chenopodium botrys Lowell Ahart 2006-7-16 12961 Butte Near of the open mudflow area, on the south side (road edge) of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows 1435 Comment
  CHSC34047  Chenopodium murale L. Ahart 1981-7-26 3002 Butte On sides of large deep ditch near the dirt rd, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Graylodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  CDA3115  Chenopodium pumilio L. Ahart 2002-10-17 9990 Butte About 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. On the gentle hills below the high water line of Lake Oroville. Comment
  JEPS103449  Chenopodium pumilio Lowell Ahart 2002-10-17 9990 Butte On the hills below the high water line of Lake Oroville, ca 1 1/2 miles S of Highway 162 (Oroville Quincy Highway), ca 3 miles (air) NE of Oroville Dam. 227 Comment
  JEPS115653  Chenopodium strictum var. glaucophyllum Lowell 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 68 Comment
  CHSC97033  Chondrilla juncea L. P. Janeway 2007-6-19 9062 Butte Northern High Sierra Nevada. Plumas National Forest; at the end of the dirt road at the upper end of the penstock of the Forbestown Powerhouse; 2.6 air km east of Ponderosa Dam, 500 m northeast of South Fork Feather River. 518 Comment
  RSA0058881  Chondrilla juncea Lowell A. Ahart 2008-7-23 15151 Butte On the north side of Ponderosa Way, north of the water fall, about 1 mile (air) southwest of the Ponderosa Dam, about 2 1/4 miles(air) northwest of Forbestown. 483 Comment
  CHSC109165  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte On the west side of an old road, Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Prk, about 7-1/2 miles (air) northeast of Chico. 414 Comment
  UCD40403  Chrysolepis Rodney Gale Myatt 1971-6-13 728 Butte 1 mi. north of Inskip. Skyway Road, north of Paradise. Road between Butte Meadows and Magala. Comment
  CHSC3367  Chrysolepis sempervirens M. Gregg 1966-4-23 105 Butte 2 miles south of Butte Meadows on Bull Run Rd. Along side of road. Comment
  POM308435  Chrysothamnus nauseosus subsp. albicaulis Henry J. Ramsey, Henry J. Ramsey 1939-10-15 3064 Butte Feather River Hwy. Comment
  RSA505436  Chrysothamnus parryi subsp. latior R. C. Bacigalupi 1957-7-26 6039 Butte Along road berm on the Humbug Road, 2.2 miles SW of Nimshaw, at eastern canyonside of Butte Creek 579 Comment
  SEINET10454841  Cicendia quadrangularis Mary Susan Taylor 1980-5-15 Taylor 2631 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  SEINET12328380  Cicendia quadrangularis M. S. Taylor, Ahart, L.; Jokerst, J. 1984-1 5398 Butte ca 0.5mi n of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca 3 mi S of Paradise? Comment
  JEPS71174  Cinna latifolia A. L. Hormay 1929-7-20 Butte (10 mi se) Butte Meadows; se <of> Butte Meadows Comment
  JEPS87145  Cinna latifolia Lowell Ahart 1992-7-26 6836 Butte small stream about 1/2 mi n Carr Mine (s side of Coon Hollow, about 2 (air) mi s of Snow Mountain); s side Coon Hollow 1737 Comment
  SEINET10475748  Cinnamomum camphora Mary Susan Taylor Taylor 453 Butte Campus of the California State University, Chico. 61 Comment
  POM219646  Circaea alpina subsp. pacifica H. F. Copeland 1928-8-21 428 Butte Neighborhood of Jonesville, woods by Willow Creek 1524 Comment
  SEINET10453141  Circaea alpina subsp. pacifica Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5116 Butte About 1/2 mile west of Lumpkin Ridge Road, about 2 1/2 miles north-east of Camp 18, about 9 miles north-east of Feather Falls. Comment
  UCD130510  Cirsium andersonii E. B. Copeland 1931-7-27 693 Butte Jonesville. 1650 Comment
  JEPS115722  Cirsium vulgare Lowell Ahart 2009-8-3 16262 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 236 Comment
  CAS-BOT-BC285725  Cirsium vulgare Lowell Ahart 1981-7-26 3010 Butte Gray Lodge, southwest of Gridley 35 Comment
  CHSC51362  Citrullus colocynthis var. lanatus Vernon Oswald; Lowell Ahart 1990-10-11 4458 Butte Dark Canyon arm of Lake Oroville, about 4 miles south of Jarbo Gap. 259 Comment
  HSC64500  Clarkia arcuata J. P. Smith, J. O. Sawyer 1973-4-14 6054 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  JEPS93841  Clarkia arcuata Lowell Ahart 1998-6-3 7976 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  JEPS105624  Clarkia biloba subsp. brandegeeae L. P. Janeway, John Hunt 2003-6-5 7807 Butte Northern Sierra Nevada Foothills. Northerly-facing slope over-looking Lake Oroville about 102 m west of the south end of Bidwell Bar Bridge, between the Oroville-Quincy Hwy and the lake 287 Comment
  RSA337386  Clarkia biloba subsp. brandegeeae L. Ahart 1984-6-8 4658 Butte Along Ponderosa Way, 1/8 mile W of Ponderosa Dam, 2 miles NW ofForbestown 370 Comment
  SD122548  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 4658 Butte Along Ponderosa Way, ca. 1/8 mile West of Ponderosa Dam, ca. 2 miles North West of Forbestown. 370 Comment
  CHSC56759  Clarkia concinna subsp. concinna L. P. Janeway 1991-6-1 3988 Butte Cut-bank of Dark Canyon Road 3.6 mi south of Big Bend/Parkhill. 280 Comment
  CDA38047  Clarkia gracilis T. C. Fuller 1958-7-7 1906 Butte 0.1 mile north of bridge over North Fork Feather River, 1 mile south of Pulga. 0 Comment
  CHSC71307  Clarkia gracilis subsp. albicaulis Vernon Oswald 1998-6-24 9238 Butte Hwy 32 at Crown Pt. Rd between Chico and Forest Ranch. 573 Comment
  SD7361  Clarkia gracilis subsp. albicaulis R. M. Austin 1880-1 Butte Comment
  CDA13724  Clarkia mildrediae subsp. lutescens G. F. Hrusa, T. D. Wilfred 1997-6-27 13902 Butte Sierra Nevada; Feather Falls/Cascade Rd. to USFS 21N22Y, 1 km. E to summit. Comment
  UCD21825  Clarkia purpurea L. D. Gottlieb 2003-5-24 303 Butte Wilbur Rd., at Hwy 162, west of Oroville. Comment
  CHSC112935  Clarkia purpurea subsp. purpurea B. Castro 2012-6-5 1927 Butte Sacramento Valley. CA 1.9 air mi E of Hyw 99, off SE corner of Thermalio Afterbay ca 540 ft NE of jcn of E. Hamilton and Larkin Roads. 38 Comment
  RSA122147  Clarkia purpurea subsp. purpurea F. W. Embree 1934-4-24 43 Butte 4.5 miles north and 1.5 mile east of Bigg 38 Comment
  CHSC27727  Clarkia purpurea subsp. quadrivulnera Robert A. Schlising 1978-5-20 3265 Butte SE of Chico Airport, north of Chico, along Cohasset Hwy. Comment
  RSA755642  Clarkia purpurea subsp. quadrivulnera L. Ahart 2009-5-15 15677 Butte About 20 yards east of the dirt road that is Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  CAS-BOT-BC164781  Clarkia rhomboidea E. B. Copeland 1931-6-10 s.n. Butte Jonesville 1650 Comment
  CAS-BOT-BC164794  Clarkia rhomboidea L. P. Janeway 1991-6-1 3983 Butte West-facing cut-bank of Dark Canyon Road 2.4 mi south of Big Bend Road/Parkhill 396 Comment
  CHSC35150  Clarkia rhomboidea R. Schlising; R. Banchero 1980-6-19 3747 Butte N of Oroville near Concow Reservoir, 0.3 mi N of Concow School. (=N of jct Concow and Nelson Roads). 518 Comment
  CHSC59111  Clarkia rhomboidea L. P. Janeway 1991-6-1 3976 Butte East-facing cut-bank of Dark Canyon Road 0.3 mi south of Big Bend Road/Parkhill. Near canyon bottom. 573 Comment
  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
  CHSC111318  Clarkia rhomboidea Samantha Mackey Hillaire 2008-5-22 1256 B Butte Plumas National Forest. Roadcuts under powerlines. 731 Comment
  SEINET10453166  Clarkia rhomboidea Mary Susan Taylor 1978-7-21 Taylor 1792 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  UC172865  Clarkia unguiculata A. A. Heller 1913-5-28 10767 Butte 8 mi n Oroville; Table Mountain 182 Comment
  RSA516781  Clarkia unguiculata L. Ahart 1980-5-13 2266 Butte Along Pacific Heights Road, Oroville 35 Comment
  CHSC93511  Claytonia palustris K. L. Chambers 1987-6-11 5365 Butte Jonesville, on Humboldt Road at the junction with Colby Mtn. Lookout Rd., where a main tributary joins Battle Creek. 1500 Comment
  CHSC98377  Claytonia palustris Dean Wm. Taylor; Tom Engstrom 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road, growing in moist bed of stream draining the site ca. 150 ft downslope to the SE of the road. 1524 Comment
  JEPS109817  Claytonia palustris Dean W. Taylor 2004-7-21 19200 Butte Cornelia Lott Sank Memorial Spring, Humbug Summit Road 1524 Comment
  SEINET770612 Image available Claytonia palustris J. R. Swanson 1959-7-4 490 Butte Jonesville, marshy, sloping stream-fed meadow above south bank of Jones Creek, 0.4 Km east of the Jonesville Hotel. Comment
  SEINET10572696  Claytonia parviflora Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4711 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10572699  Claytonia parviflora Mary Susan Taylor 1981-4-5 Taylor 3493 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
  CHSC109115  Claytonia parviflora subsp. parviflora Lowell Ahart 2012-3-23 17802 Butte On the sides of the trail down to Big Chico Creek, about 70 yards west of Ten Mile House Road, about 3/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. 202 Comment
  CHSC42409  Claytonia parviflora subsp. parviflora Lowell Ahart 1987-5-12 5644 Butte South of Lumpkin ridge road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC90009  Claytonia parviflora subsp. parviflora Charlie Crannell 1991-4-23 14 Butte 50 ft south of where Honey Run Road crosses Butte Creek. 103 Comment
  RSA754940  Claytonia parviflora subsp. parviflora L. Ahart 2008-5-8 14718 Butte Lake Oroville, about 250-300 yards south of the poor parking area, on the west side of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 air miles east of Oroville. 260 Comment
  HSC73101  Claytonia rubra subsp. rubra D. G. Bendix 1978-4-15 14 Butte 0.8 km S of jct. of Holmwood Dr. with Rosewood Dr., Magalia 850 Comment
  CHSC41989  Clematis lasiantha Lowell Ahart 1974-8-7 596 Butte Along the dirt road, about 3 miles east of Marble Creek, near Horseshoe, about 20 miles north-east of Oroville. 914 Comment
  CHSC89461  Clematis ligusticifolia R. D. Fischer 2004-7-18 451 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at bottom of 10 Mile House Road near end of park property. Along drainage, between road and Big Chico Creek. 216 Comment
  POM42868  Collinsia heterophylla C. C. Bruce 1897-04 1846 Butte Little Chico. Comment
  CHSC30375  Collinsia sparsiflora var. collina J. D. Jokerst 1979-3-9 1140 Butte Top of North Table Mt., near the E edge of mt adjacent to and S of the waterfalls of the S branch of Coal Cr., center of the W edge of section 8. Comment
  UC1012173  Collinsia sparsiflora var. collina F. W. Pennell, A. A. Heller 1940-6-5 25679 Butte Route 24; 2 mi. up, along Feather River, above Oroville. 609 Comment
  SBBG17300  Collinsia sparsiflora var. sparsiflora M. Vincent 1962-4-16 196 Butte Honey Run Rd, ca. 0.5 mi W of Paradise, in Butte Crk Cyn 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
  CHSC79571  Collinsia tinctoria G. F. Hrusa; E. Sandoval 1993-5-29 11134 Butte Feather River Canyon. Base of south-facing slope at corner of Hwy 70 and Pulga Rd. at bridge over Feather River. [Original lat./long. on label is '39 48 N; 121 37 W']. 800 Comment
  JEPS94771  Collinsia tinctoria Lowell Ahart 1998-6-3 7970 Butte about 7 air mi n of Oroville (about 1/4 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  CHSC33794  Collomia heterophylla M. S. Taylor 1981-4-28 3563 Butte N side of rd 23N28.2, in loop in rd, ca. 1.2 mi w of Chino Creek, ca. 4 air mi e of Jarbo Gap on Hwy 70. 929 Comment
  UC600655  Collomia linearis H. F. Copeland 1930-7-26 1321 Butte dry places in woods by Butte Creek; Jonesville 1524 Comment
  JEPS113203  Comandra umbellata subsp. californica Lowell Ahart 2007-4-30 13713 Butte On the west side of Jordan Hill Road, about 2 1/2 miles northwest of Concow Creek, about 2 1/2 miles northwest of Concow Reservoir 618 Comment
  RSA755266  Comandra umbellata subsp. californica L. Ahart 2009-5-15 15704 Butte About 20 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 234 Comment
  CAS-BOT-BC286063  Conyza canadensis A. A. Heller 1914-8-13 11680 Butte 8 miles north of Oroville Comment
  CAS-BOT-BC288957  Conyza floribunda Lowell Ahart 1985-1-27 4836 Butte At Kunkle Res, about 2 miles S of Paradise 550 Comment
  SEINET10474385  Conyza floribunda Mary Susan Taylor 1974-1 Taylor 318 Butte 61 Comment
  SEINET12326795  Cordylanthus pilosus subsp. bolanderi Unknown 1983-1 4279 Butte near Humboldt Rd, ca 3 mi SW of Butte Meadows 1450 Comment
  UC1032449  Cordylanthus pilosus subsp. hansenii C. G. Albertus 1933-6-1 12 Butte 6 mi w Paradise 152 Comment
  CHSC51013  Cordylanthus pilosus subsp. trifidus Lowell Ahart 1990-8-15 6590 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
  POM219138  Cordylanthus tenuis subsp. viscidus H. F. Copeland 1928-8-14 382 Butte On fire-swept ridge between Jones Creek and Scotch John Creek. Neighborhood of Jonesville. Comment
  CHSC27211  Cornus florida var. rubra P. Moyer 1972-5-1 224 Butte CSUC Campus. N side Chico Creek, e side entrance Gus Magnolis Bridge. 60 Comment
  UC195372  Cornus nuttallii A. A. Heller 1914-6-24 11513 Butte at West Branch; w. side Sierra Nevada 1036 Comment
  CHSC61640  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte On the west side of Bolt Creek, about 1 mile south-east of Butte Meadows. 1325 Comment
  UC1609004  Cornus sericea subsp. sericea Lowell Ahart 1993-9-13 7237 Butte ca. 1 mi. s.e. Butte Meadows (on w. side of Bolt Creek); Bolt Creek 1325 Comment
  UC392212  Cornus sericea subsp. sericea E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  CAS-BOT-BC210521  Cornus sessilis Clarence R. Quick 1952-6-29 52 -90 Butte 0.3 mile west of Coyote Gap on Mill Creek Road Comment
  SD60237  Corydalis caseana A. A. Heller 1928-6-20 14685 Butte Butte Meadows, Gravely moist places Comment
  POM30560  Cotula coronopifolia C. C. Bruce 1897-05 128 Butte [Unspecified] Comment
  JEPS122204  Crassula aquatica Lowell Ahart 2014-4-25 19397 Butte On the west side of Richvale South Highway, south of the intersection of Richvale West Road and Richvale South Highway, Richvale. Comment
  CHSC28639  Crassula connata M. S. Taylor 1979-3-31 1972 Butte Jct of Pentz-Magalia Rd and Pentz Rd, se corner, ca. 1/4 mi w of Hwy 70, ca. 22 mi n of Oroville. 198 Comment
  CHSC112195  Crassula tillaea Lowell Ahart 2013-4-20 18559 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 mile (air) northeast of Honcut. 47 Comment
  CHSC82270  Crataegus S. Posner 1972-9-23 Butte Garden behind apartment complex at 725 Nord Ave., Chico. Comment
  CHSC14034  Crataegus monogyna L. W. Blaisdell 1974-4-29 10 Butte Paradise. In yard of L. W. Blaisdell. 548 Comment
  CHSC91472  Croton setiger Lowell Ahart 2005-7-13 12153 Butte About 100 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS126582  Crucianella angustifolia Lowell Ahart 2016-5-25 20877 Butte About 200 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
  JEPS122259  Crypsis alopecuroides Lowell Ahart 2014-9-23 19873 Butte On the northeast part of Horseshoe Lake, about 100 yards northeast of the Rod and Gun Club, Upper Bidwell Park, about one mile east of Chico. Comment
  RSA725010  Crypsis schoenoides L. Ahart 2006-9-11 13303 Butte South edge of the North Fork of the Feather River, North side of Highway 70, About 1/8 mile west of the Poe Dam, About 3/4 mile northeast of Pulga, About 21 miles (air) northeast of Oroville. 432 Comment
  UC196315  Cryptantha affinis A. A. Heller 1914-6-22 11489 Butte Chico Meadows 1219 Comment
  SEINET10870092  Cryptantha affinis Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4708 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CHSC58256  Cryptantha flaccida Lowell Ahart 1992-5-9 6752 Butte On the north side of the Thermalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC29973  Cryptantha milobakeri R. A. Schlising 1980-6-30 3806 Butte Along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1356 Comment
  CHSC39025  Cryptantha milobakeri R. A. Schlising 1983-5-13 4405 Butte Bald Rock Dome area in e-central part of county. 548 Comment
  UCD120094  Cryptantha torreyana E. B. Copeland 1929-7-29 395 Butte Jonesville. 1700 Comment
  CHSC45268  Cucurbita foetidissima Vernon Oswald 1984-8-20 1652 Butte Midway Rd. at Butte Creek s of Durham. 45 Comment
  CHSC3331  Cunninghamia lanceolata Robert L. Smith 1966-4-1 65 Butte Lower Clark Rd., 3 miles W of Pearson Rd., Paradise. Comment
  CHSC61018  Cupressus arizonica subsp. arizonica Vernon H. Oswald 1993-7-29 5732 Butte Gray Lodge Wildlife Management Area W of Gridley, S side of Rutherford Rd. at Parking lot 4, ca. 1.5 mi W of Pennington Rd. 19 Comment
  CHSC20108  Cupressus macnabiana M. S. Taylor 1975-5-9 568 Butte Ca. 50 yds e of the Skyway, ca. 1/4 mi n of the De Sabla turnoff, Magalia. 731 Comment
  SEINET10932809  Cupressus macnabiana Carl B. Wolf, E. R. Johnson 1934-10-5 Wolf 2121 Butte Sierra Nevada foothills, at Magalia. Upper sonoran:- Digger Pines. Sun. Bright green serpentine. 700 Comment
  CHSC3600  Cupressus nevadensis Gerry Carrauthers 1966-3-5 30 Butte 1/2 mi W. of 99E. Freeway on Highway 32. E. of city of Chico. Comment
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Jul 25 2018
  UCD126365  Cuscuta Burt Ray 1950-8-1 s.n. Butte near Gridley. Comment
  CHSC94484  Cuscuta californica var. californica Lowell Ahart 2006-7-16 12959 Butte In the open mudflow area, about 50 yards south of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CHSC78509  Cuscuta pentagona Lowell Ahart 2000-8-28 8668 Butte West edge of a large man made lake, Oroville Wildlife Area, about 1/2 mile west of Oak Grove and Highway 70, about 6 miles (air) southwest of Oroville. 42 Comment
  CHSC44464  Cyclospermum leptophyllum Lowell Ahart 1988-5-15 6003 Butte On the south side of Oroville Dam Boulevard, east of McDonald's, Oroville. 42 Comment
  CHSC30992  Cymopterus terebinthinus var. californicus M. S. Taylor; R. Schlising 1980-7-6 3073 Butte On s side of Old Humboldt Rd, on rocky slope beneath power lines, ca. 0.9 mi w of Butte Meadows Forestry Station. 1341 Comment
  SD3489  Cymopterus terebinthinus var. californicus E. B. Copeland 1929-7-13 Butte Jonesville 1700 Comment
  CHSC6707  Cynodon dactylon Marilyn Lee 1968-5-3 162 Butte South side of Skyway, ca 8 miles E. of Chico. Comment
  SEINET7072728  Cynosurus echinatus A. G. Vestal 1963-5-9 s.n. Butte About 3.4 miles north of Oroville on Table Mountain Boulevard. UTM Zone 10, 620857mE, 4378681mN. Coordinate datum: NAD 27.) Comment
  JEPS95919  Cyperus acuminatus Lowell Ahart 1999-8-13 8142 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
  CHSC34199  Cyperus bipartitus J. D. Jokerst; L. Ahart 1981-9-26 1493 Butte Swale 100 m E of Sacramento River at the Bidwell River State Park (Chico Landing) ca 5.0 mi W of Chico. Comment
  CAS-BOT-BC114743  Cyperus difformis Herbert L. Mason; Verne Grant 1946-8-14 13024 Butte Canal near big pond on Sacramento Outing Club. Comment
  CHSC31690  Cyperus difformis L. Ahart 1974-10-20 666 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET13711405  Cyperus difformis Lowell William Ahart, Lowell William Ahart 1999-1 8139 Butte 12 Air Mi SW Chico, 2 Mi SE Ordbend Comment
  SEINET8756313 Image available Cyperus difformis J. M. Tucker 1953-8-28 Butte Biggs Rice Experiment Station Comment
  CHSC109748  Cyperus eragrostis Lowell Ahart 2012-10-28 18527 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CHSC38900  Cyperus eragrostis Vernon Oswald 1983-6-11 665 Butte Upper Bidwell Park, Chico, in Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC45752  Cyperus eragrostis L. P. Janeway 1987-6-13 2190 Butte At the Crain Mill site, 1.6 mi N on Ponderosa Way (Rim Rd) from Jarbo Gap. 883 Comment
  JEPS120838  Cyperus eragrostis Lowell Ahart 2013-7-9 18834 Butte South side of North Honcut Creek, west of the steel power line, about 2 air miles northeast of Honcut, about 13 air miles southeast of Oroville. Comment
  CHSC68388  Cyperus erythrorhizos L. P. Janeway 1986-9-20 1872 Butte Edge of gravel bar along east side of Sacramento River; just southeast of the Ord Ferry Road bridge. 28 Comment
  UC1100468  Cyperus erythrorhizos Herbert L. Mason and Verne Grant 1946-8-14 13023 Butte canal near big pond by Sacramento Outing Club; Butte Sink Comment
  RSA365082  Cyperus erythrorhizos H. F. Copeland 1923-7-9 550 Butte Nelson. Comment
  JEPS110276  Cyperus flavescens Lowell Ahart 2006-9-28 13379 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
  JEPS95785  Cyperus flavescens Lowell Ahart 1999-8-13 8143 Butte about 1 mile southeast of Ord Ferry; Chico; northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  SEINET4896961  Cyperus flavescens L. Ahart, V. H. Oswald 1999-8-13 8143 Butte 12 miles SW of Chico. Legal: T20N R1W 32 Comment
  JEPS95881  Cyperus fuscus Lowell Ahart 1999-8-13 8181 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
  UCD169646  Cyperus iria Lowell Ahart 2012-8-6 18415 Butte About 1 1/2 miles south of Richvale. On the west side of Richvale South Highway. 31 Comment
  CHSC51282  Cyperus niger Lowell Ahart 1990-10-21 6639 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
  CAS-BOT-BC113845  Cyperus niger var. capitatus John Thomas Howell 1959-9-20 34639 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CAS-BOT-BC114063  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  CAS-BOT-BC114076  Cyperus squarrosus Lowell Ahart 1987-7-3 5774 Butte Along the North Fork of the Feather River, near the Poe Power house, 271 Comment
  CHSC33631  Cyperus squarrosus R. D. Preston; R. A. Schlising 1981-6-21 29 Butte N slope of Snow Mtn, ca. 8 km se of Jonesville. 1950 Comment
  JEPS122158  Cyperus strigosus Lowell Ahart 2014-7-18 19693 -A Butte Doug Upton property, about 100 yards west of Lone Tree Road, About 2 miles (air) southwest of Palermo. Comment
  CHSC100124  Cystopteris fragilis L. P. Janeway 2008-8-10 9538 Butte Northern High Sierra Nevada. Along Four Trees Road at crossing of South Branch Mill Creek, 4.5 road km east-southeast of Hwy 70. Along moist roadside gutter. 823 Comment
  CHSC42505  Cystopteris fragilis Lowell Ahart 1987-5-22 5658 Butte About 1/4 mile south of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  RSA722302  Cytisus monspessulanus Richard Halse 2006-8-3 6986 Butte Along State Hwy. 32 ca. 16.3 miles northeast of Chico, near junction with Platte mountain Road. 1000 Comment
  UC142471  Damasonium californicum Mrs. R. M. Austin May 1896 20 Butte Sacramento R. Comment
  CHSC6024  Daphne odora M. MacArthur 1968-6-19 263 Butte SE side of Auditorium bld., Chico State College. 60 Comment
  JEPS120014  Darmera peltata Lowell Ahart 2012-10-28 18541 Butte On the south side of Big Chico Creek, near Table 14, northeast of Cottonwood Avenue, Lower Bidwell Park, Chico. Comment
  CHSC49433  Datura ferox Vernon Oswald 1987-8-13 3210 Butte Portion of Rancho Bosquejo. Feenstra's Riverview Orchard located at the w end of Cana Hwy between the s half of Cana Lake (on Dicus Slough) and the Sacramento River. In a bean field. 48 Comment
  CHSC31858  Datura wrightii L. Ahart 1975-7-7 855 Butte Near home near a building; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC23587  Delphinium depauperatum Nancy Mosman 1971-7-3 69 Butte In meadow along s side of Humboldt Road ca. 0.8 mi e of Butte Meadow Ranger Station. 1371 Comment
  CHSC56763  Delphinium depauperatum R. A. Schlising; R. Banchero 1980-7-31 3948 Butte NE of Snag Lake. In meadows. 1828 Comment
  CHSC24644  Delphinium gracilentum S. Deaton 1976-4-23 34 Butte 1 3/4 mi n of Feather Falls parking lot and 20 ft down s slope of Falls trail. 853 Comment
  CHSC32756  Delphinium gracilentum J. D. Jokerst; R. A. Schlising 1981-4-16 1296 Butte S side of Olive Highway, 0.4 mi SW of its junction with Forbestown Rd (ca 6.0 mi E of Oroville). Comment
  JEPS108547  Delphinium gracilentum L. P. Janeway 1994-5-13 4646 Butte Northern High Sierra Nevada. 0.7 mi north of Nelsons Crossing (Fall River) and 1.0 mi west of Kenebeck Ridge 1127 Comment
  UC726245  Delphinium hansenii A. A. Heller 1938-5-28 15110 Butte grassy slopes on Feather River Hwy 2 1/2 mi e Oroville Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  CAS-BOT-BC9922  Delphinium nudicaule Ira L. Wiggins 1925-3-22 1479 Butte Chico Creek canyon about five miles above Chico Comment
  CAS-BOT-BC9924  Delphinium nudicaule Helen M. Edwards 1917-5-1 s.n. Butte De Sabla Comment
  CAS-BOT-BC8067  Delphinium nuttallianum A. A. Heller 1915-6-10 11954 Butte Little Summit in the Sierra Nevada 1371 Comment
  CHSC94035  Delphinium patens subsp. patens R. D. Fischer 2005-4-30 717 Butte Sierra Nevada foothills, adjacent Hwy. 32, below Forest Ranch in the Big Chico Creek Ecological Reserve on Lookout Trail. Plant collected off brushy, north facing slope. 518 Comment
  UCD14293  Delphinium variegatum Katherine Courtney 1983-5-15 13 Butte Butte Co.; along the east side of Highway 70, 4 mi. southwest of Oroville, north of Polermo Road intersection; 60 Comment
  CHSC94938  Delphinium variegatum subsp. variegatum K. Lang; J. Lang 2005-3-23 35 Butte Humboldt Rd., Chico. [Label says] Coordinates: 39 degrees 75.989 minutes N, 121 degrees 73.496 minutes W. 289 Comment
  NY387586  Dendromecon leiophylla A. E. Bidwell 05 1879 s.n. Butte [illegible] Comment
  UC726580  Dendromecon rigida A. A. Heller 1918-5-5 13010 Butte Magalia Comment
  CHSC64255  Deschampsia cespitosa S. C. Morey 1983-8-2 675 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SD215  Deschampsia cespitosa subsp. cespitosa E. B. Copeland 1931-7-15 Butte Jonesville; border of the Lily Pond. Comment
  SEINET3450775  Deschampsia cespitosa var. cespitosa Unknown 2003-7-14 10395 Butte Bear Valley, Bear Valley, about 2 air miles west, Barrel Spring, about 1.5 air miles south of Bartlett Springs Road 390 Comment
  CHSC103948  Deschampsia danthonioides Lowell Ahart 2010-5-14 16643 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
  CHSC2140  Deschampsia danthonioides H. Silberman; D. Isaac 1949-4-13 Butte 1/8 mi. N. Hooker Oak, Chico. 60 Comment
  SEINET10508566  Deschampsia danthonioides Mary Susan Taylor 1978-4-14 Taylor 1547 Butte On E side of Williams Road in Valley Grassland, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 30 Comment
  CHSC94017  Deschampsia elongata R. Fischer 2005-9-5 663 Butte Location about 4 road miles east of Jonesville adjacent to county road 26N11, ca. 1 mile north of Humboldt Road. Plants growing at edge of Scotts John Creek in an area of mixed pine and fir forest. 1737 Comment
  SBBG119798  Deschampsia elongata L. Ahart 2006-7-16 12996 Butte Willow Crk, ca. 0.75 air mi NW of Jonesville, ca. 5 air mi NE of Butte Meadows 1515 Comment
  UCD63491  Deschampsia elongata A. A. Heller 1914-8-6 11648 Butte Chico Meadows. 1219 Comment
  SEINET10508569  Deschampsia elongata Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4073 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CHSC101748  Dianthus armeria subsp. armeria Lowell Ahart 2009-5-23 15744 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
  CHSC3301  Dicentra formosa M. L. Hillier 1966-4-23 Butte Side of rd. Approx. 4 miles e. of Stirling City. Comment
  CAS-BOT-BC402382  Dicentra formosa subsp. formosa A. A. Heller 1913-6-7 10831 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CAS-BOT-BC209183  Dichanthelium acuminatum subsp. acuminatum John Thomas Howell 1951-8-19 28157 Butte 2 miles west of Pulga - Sierra Nevada 365 Comment
  UCD139229  Dichelostemma capitatum Richard Sannar 1982-3-23 30 Butte south end of 18th street, about .25 mile south State route 162 in Thermalito. Comment
  CHSC90086  Dichelostemma capitatum subsp. capitatum Ross Rowland 2001-3-28 11 Butte At the end of Keffer Lane; 1/4 mile north of Skyway in Paradise. 493 Comment
  CHSC9271  Dichelostemma capitatum subsp. capitatum D. C. Burns 1971-3-17 101 Butte Abundant 5 yds. N side of Honey Run rd., ca. 2.3 mi e of the intersection of Honey Run rd. and the Skyway. 91 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
  UCSB63605  Dichelostemma capitatum subsp. capitatum Woodmansee, B. 1987-4-7 Butte Skyway, Hamlin Canyon 274 Comment
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Jul 24 2008
  SEINET10533900  Dichelostemma congestum A. Arthur Heller 1914-4-13 Heller 11287 Butte Chico-Oroville road 11 miles from Chico. Comment
  CHSC7132  Dichelostemma multiflorum J. Borgstrom 1969-5-2 23 Butte Ca. 100 yds e of 99E and Neal Rd, on Neal Rd, 3 ft. off of s side of rd. 39 Comment
  CHSC75416  Dichelostemma multiflorum Jennifer Slater 1997-4-20 28 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CHSC89846  Dichelostemma multiflorum L. P. Janeway; B. Castro 2004-6-13 8133 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
  UC843822  Dichelostemma multiflorum A. A. Heller 1915-5-28 11902 Butte near Cohasset; Sierra Foothills Comment
  SEINET12053816  Dichelostemma multiflorum I. Klockenbaum 5 s.n. Butte no further locality Comment
  SEINET12053819  Dichelostemma multiflorum L. S. Rose 1931-1 s.n. Butte Oroville Comment
  CHSC2100  Dichelostemma volubile R. M. Staley 1952-6-28 Butte W. Branch Feather River. Comment
  CHSC2841  Dichelostemma volubile David Prall 1965-4-25 26 Butte On N side of Humbug Rd. 0.3 miles west of junction with Honeyrun Rd. (covered bridge) Comment
  CAS-BOT-BC502524  Dichelostemma volubile H. E. Brown 1897-4-15 210 Butte Near Clear Creek Comment
  UC1476889  Dichondra donelliana Lowell Ahart 1979-4-28 Butte banks of creek ne Honcut; Peter Ahart Ranch, North Honcut Creek 50 Comment
  CHSC109790  Digitaria ischaemum Lowell Ahart 2012-10-20 18494 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CDA38791  Digitaria sanguinalis L. Ahart 2011-10-29 17728 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 mile northwest of Biggs. Comment
  CHSC27252  Digitaria sanguinalis P. Moyer 1971-11-7 67 Butte CSUC Campus. N bank Chico Ck., behind cafe annex. Comment
  OBI49343  Diplacus angustatus David M. Thompson 1988-3-24 853 Butte Cohasset Ridge Griffith residence, 4.4 mi NE of Keefer Rd along Cohasset hwy, then 0.4-0.6 mi S along private dirt rd 396 Comment
  CHSC44746  Diplacus douglasii R. Banchero 1980-4-7 93 Butte Along Swedes Flat Rd ca 2.8 mi E of its jct with Bangor Hwy, Ca 0.6 mi W of the jct of Swedes Flat Rd and Hurleton-Swedes Flats Rd. 373 Comment
  CHSC44824  Diplacus grandiflorus R. Banchero 1980-5-7 145 Butte Near the jct of Bear Ranch Creek and Hwy 70, ca 0.3 mi SW of Arch Rock Tunnel. 609 Comment
  CAS-BOT-BC153208  Diplacus kelloggii John Thomas Howell 1978-4-17 52843 Butte Table Mountain 381 Comment
  CHSC44760  Diplacus kelloggii R. Banchero 1980-6-12 214 Butte Along Hwy 32, 0.3 mi N of its jct with Humbolt Rd, 0.4 mi S of the Butte County line. 1072 Comment
  CAS-BOT-BC153221  Diplacus kelloggii Jean L. Pawek 1956-5-21 53 Butte Alt. 40, Feather River 609 Comment
  CHSC29393  Diplacus torreyi R. A. Schlising; S. Azevedo 1980-6-13 3698 Butte NE of Forest Ranch, 2.3 mi E and SE of Hwy32 along Garland Road (and 0.25 mi from jct latter and Ponderosa Way and Doe Mill Roads). 902 Comment
  CHSC38708  Diplacus torreyi Vernon Oswald 1983-6-11 666 Butte Upper Bidwell Park, in Lindo Channel near the diversion weir. 79 Comment
  CHSC4174  Dodecatheon hendersonii Kathy Sommerstrom 1967-4-25 25 Butte Found 1/8 mi west of covered bridge, 100 yds from Butte Creek on South bank. 76 Comment
  CHSC67292  Dodecatheon hendersonii James D. Jokerst 1984-3-20 1948 Butte Ca. 10 mi E of Oroville on the E side of Grand Oak Rd., 0.35 mi E of Hurleton-Swedes Flat Rd., just beyond Oak Cemetary. Comment
  CDA17505  Dopatrium junceum G. D. Barbe 1984-8-25 4190 Butte Sacramento Valley; Biggs Rice Experiment Station. 0 Comment
  CHSC31401  Downingia bella Paula J. Minton 1980-4-14 1 Butte 1 mi e of Chico, ca. 120 ft on n side of the Skyway. 70 Comment
  SEINET12329564  Downingia bella Unknown 1984-1 4587 Butte T17N, R4E. Peter Ahart Ranch, ca 1.5 mi N and 0.5 mi E of Honcut, ca 12 mi S of Oroville. Valley 50 Comment
  RSA40449  Downingia bicornuta A. A. Heller 1940-5-13 15617 -A Butte 3 miles W of Chico on State Hwy 32. Comment
  SEINET12329562  Downingia bicornuta Unknown 1984-1 4599 Butte T17N, R4E. ca 2.5 mi N and 1.4 mi E of Honcut, ca 12 mi S. of Oroville. Valley Grassland 40 Comment
  UC52284  Downingia bicornuta var. bicornuta Mrs. R. W. Summers Butte Comment
  UC725779  Downingia bicornuta var. bicornuta A. A. Heller 1940-5-13 15617 a Butte 3 mi w Chico (on State Highway 32) Comment
  CHSC84254  Downingia cuspidata Lowell Ahart 2003-5-28 10227 Butte Center of a vernal pool, about 100 feet west of Hendricks ditch, about 1 3/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 271 Comment
  RSA424713  Downingia cuspidata Aaron Liston, M. Blumler 1987-4-24 658 -2 Butte Table Mountain, N of Oroville on Cherokee Road. Comment
  CAS-BOT-BC41349  Draba verna Lowell Ahart 1984-2-27 4497 Butte Honcut. Peter Ahart Ranch. About 12 miles south of Oroville. 50 Comment
  CAS-BOT-BC41351  Draba verna Lowell Ahart 1990-3-19 6424 Butte About 3.5 miles southwest of Oroville. Along the south side of Pacific Heights Road. 36 Comment
  JEPS119838  Draba verna var. aestivalis Lowell Ahart 2012-3-23 17780 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  CAS-BOT-BC401551  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  UC426910  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville 1500 Comment
  UCD99547  Drosera rotundifolia Barry Rice 2005-7-3 BR 050702 Butte in meadow draining into Snag Lake, on the southeast side of Summit Road. 1770 Comment
  UCR51834  Drosera rotundifolia H. F. Copeland 1928-8-21 0594 Butte Jonesville 1524 Comment
  CAS-BOT-BC401556  Drosera rotundifolia H. F. Copeland 1931-8-8 1421 Butte Jonesville Comment
  SEINET10448023  Drosera rotundifolia Mary Susan Taylor 1982-8-16 Taylor 5004 Butte T25N R5E ne/sw sec 31. Pulga NW quad. N side of spur rd off 52513, 1 mi s of Jones Meadow, ca. 6 mi ne of Stirling City. Seep area; 5900 ft. 1798 Comment
  UC203631  Drymocallis glandulosa var. glandulosa A. A. Heller 1914-5-18 11411 Butte near Forest Ranch; west slope of the Sierra 731 Comment
  CAS-BOT-BC109477  Dudleya John Thomas Howell 1962-6-16 37597 Butte Sierra Nevada. Feather River West Branch southwest of Nelson Bar. 304 Comment
  CHSC116970  Dudleya cymosa Danielle Gee 2013-4-27 Butte Dark Canyon Rd., about 2.25 miles off Hwy 70. 428 Comment
  CHSC113123  Dysphania botrys Lowell Ahart 2013-11-18 19273 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  CHSC34191  Echinochloa colona L. Ahart 1981-9-19 3178 Butte Along edge of road just a few ft north of the Arch Rock Tunnel, on Hwy 70, ca. 10 mi s of Storrie. 550 Comment
  UCD60802  Echinochloa crus-galli Beecher Crampton 1957-9-17 4625 Butte Biggs Rice Exper. Station, 5 miles northwest of Biggs. Comment
  UCD60834  Echinochloa crus-galli E. M. Johnston 1915-1 W- 151 -J Butte Biggs. Comment
  SEINET246024 Image available Echinochloa oryzicola Beecher Crampton 1957-7-17 4626 Butte 5 miles northwest of Biggs, Biggs Rice Experiment Sation. Comment
  CDA2000  Echinochloa oryzoides G. D. Barbe, T. C. Fuller 1977-9-2 2336 Butte Rice Experiment Station, Biggs. 0 Comment
  CHSC31436  Eclipta prostrata L. Ahart 1980-9-28 2660 Butte Peter Ahart Ranch, ca. 2 mi n and 0.5 mi e of Honcut. 50 Comment
  CHSC113231  Elatine Lowell Ahart 2014-4-30 19419 Butte About 100 yards north of Dunstone Drive, about 3 1/8 miles (air) northeast of Honcut. 60 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
  CHSC82228  Elatine ambigua Lowell Ahart 2002-4-10 9476 Butte On the bottom and sides of ponds and ditches, east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC45276  Elatine heterandra Vernon Oswald 1988-4-5 3269 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 45 Comment
  JEPS109000  Eleocharis acicularis var. acicularis Lowell Ahart 2006-10-8 13435 Butte Near a large gravel bar, east side of the North Fork of the Feather River, just east of where the river flows into a pool, on the west side of Highway 70, about 1/2 mile north of the Cresta Power House 609 Comment
  CHSC68423  Eleocharis acicularis var. occidentalis L. P. Janeway; R. A. Schlising 1988-7-16 3026 Butte Large meadow at headwaters of Willow Creek. 1935 Comment
  JEPS98276  Eleocharis atropurpurea Lowell Ahart 2000-9-4 8683 Butte North of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC94332  Eleocharis decumbens Lowell Ahart 2006-7-25 13060 Butte In the west part of a large meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1569 Comment
  CHSC94509  Eleocharis decumbens Lowell Ahart 2006-8-15 13181 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
  JEPS104924  Eleocharis decumbens Dean W. Taylor 1995-8-6 15395 Butte 5 air mi NE of Stirling City, meadow 0.5 mi E of Bald Mountain summit 1706 Comment
  JEPS113682  Eleocharis engelmannii Lowell Ahart 2007-7-27 14395 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 5 1/2 mi (air) W of Oroville 36 Comment
  UC1594626  Eleocharis engelmannii Lowell Ahart 1992-5-23 6774 Butte 2 mi W of Biggs (on N side of Biggs Princeton Road) 30 Comment
  CAS-BOT-BC113369  Eleocharis engelmannii M. S. Taylor 1978-7-22 1842 Butte Ca. 20 ft E of the Midway, ca. 7 mi S of Durham, in rice field. 30 Comment
  JEPS119885  Eleocharis engelmannii var. engelmannii Lowell Ahart 2012-6-5 18162 Butte On the bottom of Beatson Hollow, about 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CHSC68438  Eleocharis macrostachya L. P. Janeway 1988-6-5 2731 Butte Canyon of Big Chico Creek; about 1 mi northeast of the end of Upper Park Road. 213 Comment
  CHSC78188  Eleocharis macrostachya Lowell Ahart 2000-5-21 8376 Butte Slickens from the Cherokee mine, on the east side of Clark Road (Highway 191), about 200 yards south of Dry Creek, about 10 miles (air) northwest of Oroville. 60 Comment
  CHSC78291  Eleocharis macrostachya Lowell Ahart 2000-6-21 8498 Butte In a small seep, south of Parking Area P, north of the Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC117404  Eleocharis pachycarpa B. Castro; Tom Boullion, Jessica Boyt 2008-10-21 1771 Butte Sacramento Valley. Ca 3.5 mi SE of Chico, 3 mi NE of Durham, near W edge of Butte Creek ca 0.5 mi upstream of its crossing under the Oro-Chico Hwy. 57 Comment
  CHSC68443  Eleocharis pachycarpa L. P. Janeway 1987-6-19 2247 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
  CHSC96332  Eleocharis pachycarpa L. P. Janeway 2006-8-6 8834 Butte Northern High Sierra Nevada. Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  UC1564776  Eleocharis quadrangulata Vernon Oswald 1989-6-29 3836 Butte located on w. side of Cana Pine Creek Rd. just s. of Tehama Co. line Vandergrift Lake 54 Comment
  CHSC42381  Eleocharis quinqueflora Lowell Ahart 1987-4-30 5496 Butte On the bottom of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  RSA716569  Eleocharis quinqueflora L. Ahart 2000-7-5 8553 Butte West of the lone oak tree, west of the cow chute and the large parking area on the west side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 404 Comment
  CAS-BOT-BC227296  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville 2133 Comment
  UCD61569  Elymus elymoides A. A. Heller 1917-7-29 12867 Butte Summit above Jonesville. 2133 Comment
  CHSC2143  Elymus glaucus H. Silberman; D. Isaac 1949-5-9 Butte Salmon Hole. 152 Comment
  JEPS88230  Elymus glaucus Vernon H. Oswald and Lowell Ahart 1996-6-10 7732 Butte Riparian Sanctuary Sacramento River National Wildlife Refuge, Llano Seco Unit (n end, U.S. Fish and Wildlife Service parcel between 7 Mile Lane and river) 28 Comment
  UC600746  Elymus glaucus E. B. Copeland July, 1929 Butte Jones Creek Jonesville 1500 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
  JEPS115913  Elymus glaucus subsp. glaucus Lowell Ahart 2009-11-19 16547 Butte About 80 yards southeast of the gate, about 70 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 269 Comment
  CAS-BOT-BC234102  Elymus multisetus Lowell Ahart 1977-6-16 1506 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC28794  Enemion occidentale J. D. Jokerst 1979-3-31 183 Butte Just s of Little Chico Cr. Comment
  CAS-BOT-BC166844  Epilobium canum subsp. latifolium John Thomas Howell 1951-8-19 28162 Butte Above Arch Rock Tunnel, on Feather River 457 Comment
  CHSC37112  Epilobium ciliatum subsp. ciliatum L. Ahart; M. S. Taylor 1982-10-11 3863 Butte Ca. 0.1 mi se of HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 35 Comment
  CHSC69722  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-10-20 7926 Butte On sand bars, on the west side of the sharp bend in the South Fork of the Feather River, about 1/4 mile north of the bridge across the river, about 3/4 mile north of Golden Trout Crossing, 3 miles (air) northwest of Sly Creek Reservoir Dam. 914 Comment
  JEPS94570  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1997-7-11 7750 Butte se Cold Creek (edge of small stream from springs, s of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road (or about 2 air ne) from Stirling City) 1219 Comment
  UC1562487  Epilobium ciliatum subsp. ciliatum Lowell Ahart 1990-8-15 6586 Butte along creek below high water line of Lake Oroville (about 1/2 mi sw of the Enterprise Bridge across lake); McCabe Creek 228 Comment
  POM183924  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-8-19 s.n. Butte Jonesville; beside Butte Creek, near the source 1800 Comment
  CHSC105267  Epilobium cleistogamum Lowell Ahart 2010-6-20 16825 Butte About 1/4 mile north of Cox Lane, about 1 1/2 miles east of Palermo Honcut Highway, Guidci Ranch, about 7 1/2 miles (air) southeast of Oroville. 59 Comment
  UCD83699  Epilobium cleistogamum Christina Owens 2005-5-8 s. n. Butte Tuscan Preserve (Lower Wurlitzer Ranch), about 10 mi N of Chico. Comment
  CHSC111605  Epilobium densiflorum Lowell Ahart 2012-8-12 18418 Butte The south edge of North Honcut Creek, about 3/4 mile north and 2 1/2 miles east of Honcut, about 13 miles southeast of Oroville. 39 Comment
  POM213943  Epilobium hallianum H. F. Copeland 1934-7-9 s.n. Butte Region of Jonesville, near the source of Butte Creek 1829 Comment
  CHSC70342  Epilobium minutum R. A. Schlising 1980-6-17 3732 a Butte Along Skyway, N of Magalia and De Sabla, ca. 1.5 mi SW of junction with Coutelenc Road at Lovelock. 780 Comment
  RSA712800  Epilobium minutum L. P. Janeway 2005-6-26 8432 Butte Northern High Sierra Nevada, S facing slope 0.4km S of top of Batchelor Point, 0.6 km E of top of Rocky Ridge and Rim road (Ponderosa Way). 945 Comment
  UC1609317  Epilobium obcordatum Lowell Ahart 1993-9-8 7164 Butte n side of ridge about 1/2 mi e Snow Mountain 2103 Comment
  HSC66347  Epilobium obcordatum M. S. Taylor, J. D. Jokerst, L. Ahart 1980-8-2 3201 Butte Humboldt Peak, on W and N side along trail 2155 Comment
  CHSC70345  Epilobium oregonense R. A. Schlising 1981-7-25 4167 Butte N part of county, E of Inskip, at Jones Meadow. At pond margin. 1842 Comment
  CHSC38563  Epilobium pallidum Vernon Oswald 1983-5-25 554 Butte Upper Bidwell Park, Chico, 400 ft s of Upper Park Rd. and 1200 ft e of Salmon Hole Parking Area. 182 Comment
  UCD169262  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. 121 Comment
  CHSC35108  Epilobium torreyi R. Schlising; R. Banchero 1980-7-31 3945 Butte N part of county, N of Snag Lake; along road N and E to Snow Mt. Roadside. 1737 Comment
  JEPS117208  Epilobium torreyi Lowell Ahart 2010-5-14 16659 Butte Area of erosion control, Disc Golf Area, about 100 yards west of the entrance to the Disc Golf Area, about 120 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 372 Comment
  CHSC109673  Epipactis gigantea Lowell Ahart 2012-7-5 18277 Butte On the south edge of Big Chico Creek, at Table 11, east of the Deer Pen, Lower Bidwell Park, Chico. 74 Comment
  SEINET10530182  Equisetum arvense Mary Susan Taylor 1979-10-13 Taylor 2251 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 1400 Comment
  UC398880  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville Comment
  CHSC87800  Equisetum laevigatum Paul Maslin 2004-4-15 17 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). UTM: 10610629E 4414004N. On edge of Big Chico Creek. 274 Comment
  RSA718080  Equisetum laevigatum L. Ahart 2006-7-16 12984 Butte About 3/4 (air) mile northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows., West edge of a large wet meadow and bog, about 20 yards east of the poor dirt road, about 100 yards south of the cabin. 1570 Comment
  CAS-BOT-BC204453  Eragrostis cilianensis Lowell Ahart 1984-10-5 4813 Butte Peter Ahart Ranch, about 1 1/2 miles north and 1 3/4 miles east of Honcut, about 12 miles south of Oroville 50 Comment
  CAS-BOT-BC204454  Eragrostis cilianensis Lowell Ahart 1979-10-2 s.n. Butte In Honcut. The area is at the intersection on Lower Honcut Road and Smullin Road 33 Comment
  SBBG126096  Eragrostis curvula L. Ahart 2012-6-2 18126 Butte S side of Hwy 70, ca 0.5 SW of Pentz Magalia Hwy 162 Comment
  CAS-BOT-BC213614  Eragrostis mexicana subsp. virescens John Thomas Howell 1959-9-20 34683 Butte Eastern outskirts of Oroville, Sierra Nevada Comment
  CHSC76429  Eragrostis mexicana subsp. virescens Lowell Ahart 1999-10-28 8306 Butte On the west side of a pond, area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  SEINET13711413  Eragrostis pectinacea Lowell William Ahart, Lowell William Ahart 1999-1 8152 Butte 12 Air Mi SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  CHSC94758  Eragrostis pectinacea var. pectinacea Lowell Ahart 2006-9-11 13338 Butte South side of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  HSC97053  Eragrostis pectinacea var. pectinacea L. Ahart 2004-9-14 11402 Butte E side of Palermo Honcut Hwy., about 20 ft. S of Palermo Rd., E part of Palermo. 58 Comment
  CAS-BOT-BC278505  Eragrostis pilosa Lowell Ahart 1988-8-10 6169 Butte On the south edge of Pentz Road, about 1 mile east of Highway 99 60 Comment
  CAS-BOT-BC278514  Eragrostis pilosa var. pilosa A. A. Heller 1914-8-20 11688 Butte Hills 8 miles north of Oroville near the base of Table Mountain Comment
  UC73441  Eremocarpus setiger H. E. Brown 1896-10-9 112 Butte near Clear Creek 53 Comment
  SEINET10873980  Eremocarpus setiger Mary Susan Taylor 1982-8-16 Taylor 4989 Butte T24N R4E sw/se sec 28. Paradise NE quad. S end of Stirling City, along both sides of the Skyway. Mixed Evergreen Forest; 3400 ft. 1036 Comment
  CAS-BOT-BC174177  Eremogone cliftonii Lewis Rose 1967-1-1 69075 Butte Rodgers Flat, Feather River 609 Comment
  CHSC36079  Eremogone cliftonii R. E. Preston; R. Banchero, R. A. Schlising 1982-6-23 4300 Butte N of Concow area and n of Flea Mt. in central part of county; at roadside. 1112 Comment
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Jul 8 2014
  CHSC41906  Ericameria arborescens Lowell Ahart 1976-10-13 1222 Butte Along the road, about 1 1/2 mile west of Pinkard Creek, about 2 miles west of the Sly Creek Dam. 762 Comment
  JEPS19841  Ericameria parryi var. latior Rimo Bacigalupi with Howard Whisler 1957-7-26 6039 Butte 2.2 mi sw of Nimshew (at e canyonside of Butte Creek, along road berm on the Humbug Road); Butte Creek 579 Comment
  SEINET10474621  Erigeron foliosus var. hartwegii Lowell Ahart, Peter Ahart 1983-7-24 Ahart 4211 Butte T20N R7E ne sec 32. At the Forbestown Reservoir, ca. 5 mi ne of Forbestown. Yellow Pine Forest; 450 m. 450 Comment
  CHSC28948  Erigeron lassenianus var. lassenianus M. S. Taylor 1978-7-19 1791 Butte At the Helispot, ca. 1/2 mi s of Humbug Summit on e side of Humbug Rd. 1950 Comment
  CAS-BOT-BC295773  Erigeron petrophilus var. sierrensis Walter S. Lennon 1974-1-1 s.n. Butte Near Pulga Comment
  CHSC67339  Erigeron petrophilus var. sierrensis J. D. Jokerst 1984-8-15 2147 Butte Along edge of Pulga Road within 100 meters of its junction with Highway 70. Canyon of the North Fork of the Feather River. Comment
  SEINET10938057  Erigeron strigosus Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4218 Butte T21N R6E sec 10? Ca. 2 mi s of Milsap Bar, ca. 23 mi ne of Oroville. Yellow Pine Forest; 750 m. 750 Comment
  CHSC26624  Erigeron sumatrensis M. P. Hayes 1977-9-4 121 Butte Near organic garden area on Butte College Campus at the corner of Clark and Pentz roads. 90 Comment
  CHSC39792  Eriodictyon californicum Eloise Gallatin 1935-5-17 Butte Fern Bank Comment
  LA205650  Eriodictyon californicum A. A. Heller; 1915-4-20 sn Butte 7 mi. below Centerville in the Sierra foothills 76 Comment
  CHSC33983  Eriogonum nudum var. pubiflorum S. Posner 1972-10-24 Butte Between dredger tailings, 150 yds. south of Humbug Rd., 3 miles from Butte Creek Rock Co. Chico. Comment
  SEINET8339333  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC30075  Eriogonum spergulinum var. reddingianum R. A. Schlising; R. Banchero 1980-7-14 3910 Butte Near Philbrook Reservoir, 2.4 mi E of junction with Skyway, on Philbrook Road. Comment
  CHSC92286  Eriogonum umbellatum var. ahartii L. P. Janeway; B. Castro 2005-8-1 8516 Butte Northern High Sierra Nevada. Plumas National Forest; open serpentine slope/knob 0.5 km south of the Paradise Lake dam; east side of Little Butte Creek. 756 Comment
  RSA0114874  Eriogonum umbellatum var. ahartii L. P. Janeway 2014-8-13 11570 Butte Northern High Sierra Nevada. Plumas National Forest; Magalia Serpentine (McNab Cypress proposed Special Interest Area); about 2/3 of the way down the steep slope between Coutolenc Road and West Branch Feather River (and the diversion dam). 540 Comment
  POM220118  Eriogonum ursinum H. F. Copeland 1928-8-29 441 Butte Neighborhood of Jonesville. Dry rocks in Butte Creek Canyon Comment
  CHSC58942  Eriogonum ursinum var. ursinum Lowell Ahart 1992-7-29 6884 Butte On rocky slopes, about 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC88276  Eriogonum vimineum Lowell Ahart 2004-7-11 11224 Butte On the southeast edge of Paradise Lake, about 3/4 mile northeast of the picnic area, about 1 mile northeast of Paradise Dam, about 4 miles (air) southwest of Stirling City. 814 Comment
  UCD101524  Eriogonum vimineum John Thomas Howell 1959-9-20 34615 Butte along Feather River near Oroville. 45 Comment
  LA203593  Eriophyllum lanatum E. B. Copeland; 1930-7-11 492 Butte Jonesville, near the head of North Willow Creek 1550.0 Comment
  CHSC48155  Eriophyllum lanatum var. croceum Vernon Oswald; M. S. Taylor 1985-5-30 1792 Butte Big Bar Mt. Rd. 0.4 mi s of Coyote Gap. 1292 Comment
  CHSC40478  Eriophyllum lanatum var. grandiflorum Lowell Ahart 1985-5-15 4997 Butte West of a small dry stream, 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow Res. 731 Comment
  CHSC56751  Eriophyllum lanatum var. grandiflorum J. D. Jokerst 1980-4-21 Butte Junction of Pentz-Magalia Hwy and Pentz Road. Comment
  CHSC77707  Eriophyllum lanatum var. grandiflorum Anna Pinsky 1997-4-24 11 Butte Upper Bidwell Park, Salmon Hole, 100-200 ft. above Big Chico Creek. Near parking area, off main road into park. Comment
  CHSC101283  Erodium botrys Lowell Ahart 2009-4-17 15561 Butte South slope of a ridge, about 150 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 373 Comment
  CHSC33689  Erodium cicutarium L. Ahart 1981-3-29 2712 Butte Along the edge of Ponderosa Way, near the Ponderosa Dam, near Forbestown. 350 Comment
  CHSC38452  Erodium cicutarium Vernon Oswald 1983-3-13 153 Butte Upper Bidwell Park, Chico, in Parking Area P (2.0 mi e of the power lines). 207 Comment
  SEINET10495135  Erodium obtusiplicatum Mary Susan Taylor 1975-2-16 Taylor 374 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
  CHSC42910  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC42039  Erythranthe bicolor Lowell Ahart 1986-5-20 5280 Butte Road goes to the Forbestown Reservoir, about 2 miles south-west of the Forbestown Reservoir, about 2 1/2 miles north-east of Forbestown. 822 Comment
  CHSC44825  Erythranthe bicolor R. Banchero 1980-4-26 138 Butte Along the Cohasset Hwy 6.1 mi NE of its jct with Keefer Rd, ca 1.4 mi E of the Hwy. 609 Comment
  CHSC110633  Erythranthe glaucescens Christopher T. Ivey 2013-5-9 378 Butte Paradise Lake, SE margin of lake, about 0.5 km along footpath from parking lot at end of Lucretia Rd. Comment
  CHSC105164  Erythranthe guttata Christopher T. Ivey 2007-4-30 367 Butte Table Mountain, along small creek. 396 Comment
  CHSC44777  Erythranthe nasuta R. Banchero 1980-5-7 148 Butte Roadside 4.65 mi NE of the jct of Hwy 70 and the Feather River, 1.0 mi SW of Arch Rock Tunnel. 463 Comment
  CHSC43145  Erythranthe pulsiferae R. A. Schlising; R. Banchero 1980-6-12 3684 Butte 4.6 mi S of Tehama County line on Hwy 32; to E of highway. Comment
  CHSC2407  Erythronium multiscapideum R. Carter 1964-5-23 102 Butte Magalia, below outlet to reservoir. 731 Comment
  CHSC32737  Erythronium multiscapideum M. S. Taylor; L. Hanson 1981-4-10 3523 Butte Ca. 1/4 mi n of Pine Cluster Ranch, ca. 6 mi n of Jarbo Gap on Hwy 70, ca. 21 air mi n of Oroville. 822 Comment
  CHSC87535  Erythronium multiscapideum R. D. Fischer 2004-3-22 91 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected near Hwy 32 and parking area for 10 Mile House Road 300 ft down rd. 457 Comment
  UC143392  Erythronium multiscapideum Mrs. R. M. Austin Mar 1899 5 Butte Butte Creek Comment
  CAS-BOT-BC504532  Erythronium multiscapideum Lowell Ahart 1983-4-14 3934 Butte About 3/8 mile southwest of the Forbestown Res., about 4 miles northeast of Forbestown 450 Comment
  SEINET10469551  Erythronium multiscapideum Mary Susan Taylor 1981-4-14 Taylor 3533 Butte T22N R4E sw sec 12. Pulga SW quad. Mixed Coniferous Forest, loamy soil over rocky base, on Ponderosa Way(Rim Rd) ca. 2 mi N of Jarbo Gap on Hwy 70, ca. 20 air mi N of Oroville. 2900 ft. 884 Comment
  RSA3783  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte among lava rocks at the Salmon Hole on Chico Creek E of Chico Comment
  CAS-BOT-BC402643  Eschscholzia caespitosa A. A. Heller 1927-4-7 14336 Butte At the Salmon Hole on Chico Creek east of Chico Comment
  UCD95383  Eschscholzia lobbii David E. Young 1983-6-6 13 Butte North Table Mountain, 0.4 km west of Cherokee Road, 0.5 km SW of Oregon Gulch Road, and 10 km north of Oroville, 7 km E of Hwy 70. 390 Comment
  JEPS115504  Eucalyptus camaldulensis Lowell Ahart 2009-6-12 15843 Butte On the east side of the deep pen, about 50 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 130 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  SEINET194884  Eunanus douglasii A. A. Heller 1938-1 15025 Butte On the treeless undulating plain of Table Mt. Comment
  CHSC44491  Euphorbia peplus Lowell Ahart 1988-4-29 5967 Butte Along the edges of North Honcut Creek, about 2 miles north and 3 miles east of Honcut, on the Joie Osgood Ranch, about 12 miles south-east of Oroville. 68 Comment
  CHSC615  Euphorbia peplus V. Holt 1945-11-16 Butte Chico. 57 Comment
  CHSC62356  Euphorbia spathulata B. Castro 1990-4-21 420 Butte Ca 3 mi SW of Paradise, off Honey Run Rd. Near top of embankment at foot of canyon hillside. 146 Comment
  CHSC21047  Euthamia occidentalis M. S. Taylor 1975-10-3 926 Butte At bridge over slough on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC28422  Euthamia occidentalis M. S. Taylor 1979-10-2 2215 Butte On sandbar in Sacramento River, at Chico Landing, ca. 5 mi w of Chico. 30 Comment
  SEINET10872046  Evax caulescens Mary Susan Taylor 1978-5-7 Taylor 1597 A Butte In Valley Grassland, on E side of Williams Road, ca. 1/4 mi N of Pentz Road, on Butte College Campus, ca. 15 mi S of Chico. 30 Comment
  CAS-BOT-BC278269  Festuca californica John Thomas Howell; Gordon H. True 1967-6-11 42564 Butte On northwest side of Feather River Canyon near Pulga Bridge 426 Comment
  UCD65826  Festuca californica John Thomas Howell; Gordon H. True 1967-5-9 42243 Butte On NW side of Feather River Canyon near Pulga Bridge. 426 Comment
  SEINET10508574  Festuca californica Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4701 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  CAS-BOT-BC278301  Festuca californica subsp. californica V. Oswald; L. Ahart 1988-6-17 3398 Butte North side of the dam at Lost Creek Reservoir 1005 Comment
  CHSC74046  Festuca subulata B. Castro; L. Gehrung 1998-7-2 801 A Butte Ca 7 air mi NW of Brush Creek, ca 0.5 mi E of Hungry Hunt Peak, on W edge of USFS Rd 23N28. 1091 Comment
  CHSC60868  Festuca subuliflora Vernon H. Oswald; Lowell Ahart 1993-6-22 5563 Butte Long Ravine W of Stirling City, along Hendricks Canal ca. 0.25 mi S of the Diversion Dam. 950 Comment
  CHSC45132  Fimbristylis autumnalis Vernon Oswald 1987-7-23 3148 Butte Feenstra's Riverview Orchard located at the w end of Cana Rd. between the s half of Cana Lake (Dicus Slough) and the Sacramento River. 48 Comment
  CHSC107927  Foeniculum vulgare L. P. Janeway 2011-7-7 10504 Butte Sacramento Valley. Oroville, north edge of the levee on the south side of the Feather River, 125 m east of Bedrock Park. 49 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
  CHSC9386  Forsythia M. MacArthur 1968-6-17 201 Butte SE edge of Big Chico Creek opposite Auditorium, Chico State College campus. 60 Comment
  CAS-BOT-BC62935  Frangula californica subsp. tomentella Gladys L. Smith 1976-5-18 s.n. Butte Lower Feather River Canyon, right side of State Route 70 just before first new turnout. Comment
  CAS-BOT-BC62942  Frangula californica subsp. tomentella Vesta Holt 1932-6-1 s.n. Butte Near Chico. Comment
  CDA38769  Fraxinus dipetala L. Ahart 2012-4-2 17896 Butte On the west side of South Rim Trail, about 5/8 mile west of Highway 32, about 8 1/2 mile northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC87431  Fraxinus dipetala R. D. Fischer 2004-3-22 94 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected on Guardian Trail, 400 ft south of its junction with 10 Mile House Road. Along trail, and along 10 Mile House Road. 403 Comment
  CHSC88863  Fraxinus dipetala Christine Hantelman 2000-4-3 62 Butte Along Cohasset Road. 350 Comment
  CHSC28967  Fritillaria affinis J. D. Jokerst 1980-2-24 450 Butte E branch of Mud Cr ca 0.5 mi E of Richardsons Springs. 243 Comment
  CHSC52379  Fritillaria affinis B. Castro 1991-3-3 439 Butte Above bend in Cohasset Rd ca 3.5 mi E of its jcn with Richardson Sprs Rd. 268 Comment
  CDA14072  Fritillaria eastwoodiae G. F. Hrusa, T. D. Wilfred 1997-5-1 13719 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Comment
  CHSC2281  Fritillaria eastwoodiae M. Roberson 1956-4-2 Butte SW of Paradise, along Skyway. 426 Comment
  CHSC29100  Fritillaria eastwoodiae M. S. Taylor; J. D. Jokerst 1980-4-18 2502 Butte Ca. 1 mi S of Nimshew, ca. 2 ft E of Nimshew Rd. 609 Comment
  SDSU19717  Fritillaria eastwoodiae Sean Ryan 2010-4-17 34 Butte 10 yards from south side of Nimshew Road, approximately 100 yards west of its intersection with Tika Lane, NW of Magalia. 750 Comment
  RSA0000355  Fritillaria eastwoodiae J. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CAS-BOT-BC124016  Fritillaria phaeanthera Mrs. J. H. Morrison 1932-4-17 s.n. Butte near Durham Comment
  NY319697  Fritillaria phaeanthera L. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
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Oct 5 2009
  CHSC14002  Fritillaria recurva C. Eiser 1974-5-1 23 Butte Collected ca. 1/4 mi n of KHSL T. V. Station on Cohasset Rd, ca. 1.5 mi w of Cohasset Rd. 853 Comment
  CHSC34223  Fritillaria recurva M. S. Taylor 1981-5-21 3784 Butte Jct of Camp Creek and rd 23N10, ca. 4 mi n of Pulga on Feather River Hwy 70. 1005 Comment
  CHSC3430  Galium aparine Judy Potter 1966-3-28 207 Butte On Table Mountain. Comment
  RSA754579  Galium aparine L. Ahart 2009-4-17 15548 Butte S slope of a ridge, about 150-200 yards W of Highway 32, near the S boundary, Upper Bidwell park, about 5 air miles NE of Chico. 373 Comment
  CHSC1616  Galium bolanderi E. Roos 1930-4-28 Butte Rifle Range, Bidwell Park. 91 Comment
  CHSC48881  Galium bolanderi Vernon Oswald 1984-6-19 1305 Butte Hwy 32, 6.3 mi N of Forest Ranch. Comment
  SEINET10500694  Galium bolanderi Mary Susan Taylor 1978-7-18 Taylor 1671 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  CHSC82511  Galium parisiense Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9748 Butte On the south 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
  JEPS110290  Galium parisiense Lowell Ahart 2006-6-9 12651 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  UCD121893  Galium porrigens George F. Hrusa 1990-4-4 7644 Butte Throughout SE to NE side of North Butte. 350 Comment
  CHSC101837  Galium porrigens var. tenue Lowell Ahart 2009-5-23 15753 Butte Upper Bidwell Park, about 10 miles northeast of Chico, about 100 yards west of the interection of Highway 32 and Ten Mile House Road, on north side of Ten Mile House Road. 461 Comment
  CHSC32670  Galium porrigens var. tenue M. S. Taylor; D. Hemphill 1981-3-18 3426 Butte S of bridge crossing West Branch Feather River, ca. 50 ft W of the river, ca. 1 mi NE of Magalia. 487 Comment
  CHSC36162  Galium porrigens var. tenue Linyi Maslin 1981-3-25 6 Butte Bank SE of Butte Creek Canyon off Skyway between Chico and Paradise. 242 Comment
  JEPS52735  Galium porrigens var. tenue Lauramay T. Dempster 1964-7-24 4043 Butte 3 mi s Nimshew 487 Comment
  RSA325145  Galium porrigens var. tenue M. S. Taylor, V. Oswald 1984-4-4 5374 Butte Along Humbug Rd. Ca 0.5 miles E of Honey Run Covered Bridge. Ca 6 air miles E of Chico. 183 Comment
  SEINET10500736  Galium porrigens var. tenue Mary Susan Taylor 1980-3-1 Taylor 2349 Butte T21N R3E nw 1/4 sec 5. Near Elliot Spring House, S side of Neal Road, ca. 2 mi SW of Paradise. 302 Comment
  SEINET10500739  Galium porrigens var. tenue Mary Susan Taylor 1981-3-18 Taylor 3426 Butte T23N R4E north center third sec 30 Paradise SE quad; from bridge crossing West ranch Feather River, ca. 1/4-1/2 mi e and s along Ponderosa Way (Jordan Hill Rd), e of Magalia; 1600-1900 ft. 488 Comment
  CHSC64219  Galium triflorum S. C. Morey 1983-7-23 584 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi E of Butte Meadows. 1414 Comment
  UC1562451  Gamochaeta stachydifolia Lowell Ahart 1990-4-28 6466 Butte in the borrow area about 1/4 mi s Feather River ( about 4/10 mi w of Pacific Heights Road, about 4 1/2 mi sw of Oroville) 30 Comment
  JEPS120916  Gamochaeta ustulata Lowell Ahart 2013-5-27 18719 Butte About 50 yards S of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  CHSC40353  Garrya fremontii Lowell Ahart 1985-1-27 4835 Butte On a steep slope a little below the road, east of Magalia. 750 Comment
  CHSC95071  Garrya fremontii L. P. Janeway; Dan Lubin, Linnea Hanson, Jim Bishop, Catie Bishop 2006-6-12 8688 Butte Northern High Sierra Nevada; Plumas National Forest, Feather River Ranger District. Top of the ridge at 'Magalia Serpentine' about 40 m west of Coutelenc Road and 300 m north of Skyway. 713 Comment
  UC1122681  Garrya fremontii J. E. Sowder 1933-6-28 97 Butte 1.5 mi e Keefer's Old Mill; Chico Quad. 274 Comment
  UC1174974  Garrya fremontii P. C. Everett and E. K. Balls 1959-10-20 23910 Butte 9.4 mi ne Chico (State Hwy 32, toward De Sabla) 792 Comment
  JEPS110272  Gastridium ventricosum Lowell Ahart 2006-6-9 12652 Butte On the east side of Bardees Bar Road, south of the small stream, about 1/4 mile southwest of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 403 Comment
  RSA718782  Gaultheria ovatifolia L. P. Janeway 2006-8-6 8835 Butte Large flat meadow along Pinkard Creek, 2.3 air km north of Lost Creek Reservoir dam; along northwest edge of the meadow. 1082 Comment
  JEPS104190  Gayophytum diffusum subsp. parviflorum Lowell Ahart 2003-8-17 10513 Butte North edge of the meadow, ca 100 yd ne of the buildings in Butte Creek House Meadow, ca 3 mi ne of Snag Lake, ca 7 mi (air) e of Butte Meadows. 1771 Comment
  SBBG119859  Gayophytum diffusum subsp. parviflorum L. Ahart 2003-8-17 10513 Butte ca. 100 yards NE of the buildings in Butte Crk House Meadow, ca. 3 mi NE of Snag Lake, ca. 7 mi (air) E of Butte Meadows 1771 Comment
  CHSC28526  Gayophytum heterozygum M. S. Taylor 1979-8-4 2175 Butte Ca. 1 mi n of Cresta Powerhouse on Hwy 70, ca. 30 mi n of Oroville. 487 Comment
  SEINET10453075  Gayophytum heterozygum Mary Susan Taylor 1978-7-18 Taylor 1672 Butte On W side of Hwy 32 on edge of Yellow Pine Forest, in dry open area, ca. 1/4 mi N of Forest Ranch. 718 Comment
  SEINET12332631  Gentiana newberryi P. Broyles, Schlising, R. A.; Janeway, L. P.; Castro, B. 1987-1 1076 Butte Ca 17km NE of Inskip. T26N, R4E, SE1/4 section 36 499 Comment
  RSA0028178  Geranium carolinianum L. Ahart 2009-4-26 15649 Butte Upper Bidwell Park: on N side of Ten Mile House Road, about 100 yards W of the intersection of Hwy 32 and Ten Mile House Road, about 10 miles NE of Chico. 462 Comment
  CHSC109069  Geranium dissectum Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17856 Butte On the south side of the paved road, east of the Deer Pen, between Tables 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  SEINET10936166  Geranium dissectum Mary Susan Taylor 1975-4-26 Taylor 519 Butte Kunkle Reservoir, ca. 500 yds E of Pentz-Magalia Hwy, ca. 1 m SE of Paradise. With Orthocarpus erianthus, Centaurea solstitus, Lupinus bicolor, Typha latifolia. 610 Comment
  CHSC108963  Geranium molle Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17858 Butte On the south side of the paved road, east of the Deer Pen, between Table 10 and 11, Lower Bidwell Park, Chico. 65 Comment
  CHSC38455  Geranium molle Vernon Oswald 1983-3-31 233 Butte Upper Bidwell Park, Chico, ca. 300 ft n of Upper Park Rd. near Parking Area R (Yahi Trail to Brown's Hole); about 2.3 mi e of the power lines. 243 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
  CHSC43048  Geum macrophyllum L. P. Janeway 1987-6-19 2234 Butte Along Sly Creek near the road to the SE side of Sly Cr Reservoir 2.1 mi from the Challenge-LaPorte Rd. Near edge of creek. 1097 Comment
  CHSC64211  Geum macrophyllum S. C. Morey 1983-8-3 697 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC46391  Gilia capitata subsp. mediomontana Lowell Ahart 1989-5-29 6312 Butte Along the road to the Forbestown Reservoir, about 1/2 mile south-west of the Forbestown Reservoir, about 4 miles north-east of Forbestown. 548 Comment
  UCD117708  Gilia capitata subsp. mediomontana L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  CHSC42089  Gilia capitata subsp. pedemontana Rusti Gammon 1986-4-18 19 Butte Ca. 5 mi s of Centerville, ca. 20 yds w of Butte Creek above w bank. 91 Comment
  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
  UCSB44170  Gilia tricolor Reisentz, Paul 1979-5-13 Butte 1 mile south on Derrick Road from Cherokee Road; heading toward Oregon City Comment
  CHSC41667  Ginkgo biloba L. P. Janeway 1986-3-19 1336 Butte City of Chico. Planted in the lawn behind the Bidwell Mansion. Comment
  SEINET10458522  Githopsis calycina Mary Susan Taylor 1975-4-29 Taylor 536 Butte Abundant in fields ca. 50-500 yds S of Pentz Road, ca. 1/4 mi E of Hwy 99, ca. 15 mi S of Chico. With Layia fremontii, Achyrachaena mollis, Delphinium spp. Comment
  CAS-BOT-BC266482  Githopsis diffusa Clare B. Hardham 4-17-?8 21552 Butte Humbug Road N of Paradise Comment
  CHSC32136  Githopsis specularioides L. Ahart 1974-4-24 427 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC97251  Glinus lotoides Lowell Ahart 2007-8-19 14484 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  SEINET260329 Image available Glinus lotoides Lowell Ahart 1986-1 5437 Butte Ca 1/10 mi S of the clay burrow for Oroville Dam, 1/4 mi E of Larkin Rd, ca 6 mi SW of Oroville 37 Comment
  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
  CHSC38493  Glycyrrhiza lepidota Vernon Oswald 1983-6-2 607 Butte Upper Bidwell Park, Chico, along Yahi Trail e of Brown's Hole. 207 Comment
  SEINET10904962  Gnaphalium chilense Mary Susan Taylor 1977-8-16 Taylor 1448 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  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
  CHSC38354  Gnaphalium palustre Vernon Oswald 1983-6-3 620 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  POM39097  Gnaphalium palustre C. C. Bruce 1897-06 2110 Butte Little Chico Comment
  SD5486  Gnaphalium palustre E. B. Copeland 1931-7-18 Butte Jonesville 1500 Comment
  CHSC116723  Gratiola ebracteata Lowell Ahart 2016-5-24 20874 Butte Low place in flood plain, 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 intersectionof La Porte Road and Loma Rica Road, about 3 1/4 miles (air) northeast of Honcut. 44 Comment
  JEPS103378  Gratiola ebracteata Lowell Ahart 2002-4-24 9533 Butte Vernal pools and swales, in a field, on the E side of Lone Tree Road, ca 1 1/8 miles N of Cox Lane, ca 3 miles (air) SW of Palermo, ca 7 miles (air) S of Oroville. 35 Comment
  JEPS123885  Gratiola ebracteata Lowell Ahart 2015-5-5 20140 Butte About 400 yards south of Larkin Road Boat Lunch Area, near the Thermalito Afterbay, about 1 miles southwest of the Oroville Airport, about 6 miles (air) southwest of Oroville Comment
  SEINET10547781  Gratiola ebracteata Mary Susan Taylor 1980-5-31 Taylor 2763 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
  CHSC97328  Grindelia hirsutula var. davyi L. P. Janeway 2007-6-26 9071 Butte Northern Sierra Nevada Foothills. Along the Oroville-Quincy Hwy 0.3 road km southwest of the south end of Bidwell Bar Bridge and the Middle Fork Feather River arm of Lake Oroville. 306 Comment
  POM118199  Hackelia californica H. M. Hall 1914-7-23 9776 Butte Tributary of Butte Creek, northern Butte County, in the Transition Zone of the Sierra Nevada. 1580 Comment
  CHSC35084  Hackelia nervosa R. A. Schlising; J. Fuller, M. Merryman, R. Banchero 1981-6-20 4093 Butte N part of county, E of Inskip, 5.8 mi E of crossing of West Branch of Feather River. Comment
  CHSC28541  Hazardia whitneyi M. S. Taylor; J. D. Jokerst 1979-10-13 2269 Butte Jordan Hill Rd, near Sawmill Peak, ca. 9.2 mi n of its jct with Concow Rd, ca. 2 mi e of Magalia. 944 Comment
  CHSC96317  Helenium bigelovii L. P. Janeway 2006-8-12 8845 Butte Northern High Sierra Nevada. Meadow at head of northwestern branch of Keyser Creek, below sharp bend in Concow Road, 0.3 km east of the summit of Bald Mountain. 1695 Comment
  SEINET11830212  Helenium bigelovii Unknown 1966-1 432 Butte 0.67 mi SE of Little Bald Rock on N side of Bean Creek Rd Comment
  SEINET5554091  Helianthella californica H. S. Gentry 1962-1 19760 Butte 6-7 mi. south of Cohasset, along road from Chico. 609 Comment
  UC1609017  Helianthella californica subsp. nevadensis Lowell Ahart 1993-9-8 7171 Butte on top of ridge about 1 mi e Snow Mountain 2103 Comment
  CDA5437  Heliotropium europaeum D. G. Kelch 2006-8-2 6 .34 Butte Along Butte Creek, north of Durham-Dayton Hwy. Comment
  CHSC108137  Heliotropium europaeum Lowell Ahart 2011-10-30 17732 Butte Garden, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  CHSC100948  Hemizonella minima R. A. Schlising 1980-6-10 3671 Butte Carpenter Ridge, along Humboldt Road, 1.9 miles northeast of junction with Highway 32 at Lomo. 1356 Comment
  CHSC381  Hemizonella minima B. Richardson 1929-5-20 Butte Cohasset. Comment
  CHSC357  Hemizonia congesta subsp. luzulifolia V. Holt 1944-9-15 Butte Near Chico. 57 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
  CAS-BOT-BC310156  Hesperevax caulescens Peter H. Raven 1963-5-8 18363 Butte On State Highway 32, 5 miles west of Chico Comment
  CAS-BOT-BC310190  Hesperevax sparsiflora var. sparsiflora Lowell Ahart 1979-5-8 s.n. Butte 3 miles north-east of Honcut. Near North Honcut Creek. About 1/4 mile north of the Peter Ahart Ranch 70 Comment
  CHSC101680  Hesperocnide tenella Lowell Ahart; Josephine Guardino 2009-5-8 15652 Butte Protected area under cliffs, above a steep slope, about 40 feet south of the south side of the gravel road and Big Chico Creek, about 100 yards east of the end of Chico Canyon Road, Upper Bidwell Park, Chico. 68 Comment
  UC1609085  Heterocodon rariflorum Lowell Ahart 1993-6-20 6981 Butte about 1 mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  UC600502  Heterocodon rariflorum H. F. Copeland 1927-9-4 945 Butte Jonesville Comment
  UCSB63791  Heterocodon rariflorum Ahart, Lowell 1997-8-1 Butte Damp rocky dark soil, near some small streamlets of Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. Uncommon, inconspicuous. Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CHSC3603  Heteromeles arbutifolia Gerry Carrauthers 1966-2-28 23 Butte Ca. 10 mi N.E. of Chico at end of dirt road beyond Bidwell Golf Course ca. 5 mi. Comment
  SEINET10483348  Heteromeles arbutifolia Lowell Ahart 1985-6-30 Ahart 5092 Butte About 2 1/2 miles north-east of Forbestown. Alt. 2850 ft. 868 Comment
  UCD19373  Hibiscus lasiocarpos var. occidentalis E. Dean; with J. Ditomaso and E. Healy 2001-8-20 870 Butte East of the Sacramento River, North of Sutter Buttes, along Hwy 162, ca. 3 road miles E of the intersection of Eureka St. and Hwy 162 in the town of Butte. 30 Comment
  CHSC102729  Hirschfeldia incana Lowell Ahart 2009-7-9 16020 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 203 Comment
  CHSC39560  Hoita macrostachya Lowell Ahart 1983-7-24 4201 Butte About 1/2 mile south-west of the intersection of the Oroville Forbestown Road and Black Bart Road, about 6 miles south-west of Forbestown. 750 Comment
  CHSC62552  Hoita orbicularis B. Castro; J. Jurewicz 1993-7-7 469 Butte Ca 2.5 mi SSW of Big Bar Mtn, on SE-facing slope on the N side of USFS Rd 22N84. 960 Comment
  CHSC42401  Holcus lanatus Lowell Ahart 1987-6-9 5728 Butte Along the edge of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 274 Comment
  JEPS98510  Holcus lanatus Lowell Ahart 2000-7-17 8594 Butte On the west side of a small wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles (air) southeast of Oroville. 45 Comment
  CHSC85916  Holodiscus discolor L. P. Janeway; Christine Hantelman 2003-7-3 7865 Butte Northern Sierra Nevada Foothills. South edge of North Fork Feather River arm of Lake Oroville, 2.8 km east-northeast of mouth of West Branch Feather River arm of Lake Oroville. 276 Comment
  SEINET10528759  Hookera coronaria A. Arthur Heller 1938-5-22 Heller 151 Butte Plentiful near the Chico airport in red clay soil derived from disintegrated lava rock, in the Upper Sonoran Life Zone. Comment
  JEPS119864  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 2012-5-14 18045 Butte A little east of Table 7, on the south side of Big Chico Creek, north of the paved road, northeast of Cedar Grove, Lower Bidwell Park, Chico. Comment
  HSC92444  Hordeum depressum L. Ahart 1981-5-16 2807 Butte Gray Lodge Waterfowl Management Area, 12 mi. SW of Gridley 30 Comment
  CAS-BOT-BC285088  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-5-17 2311 Butte 1/2 mile south-east of Hurleton 600 Comment
  CHSC31718  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 758 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC41136  Hordeum marinum subsp. gussoneanum R. L. Ondricek-Fallscheer 1982-3-22 133 Butte Along Hwy 149, ca. 1 mi e of jct. of Hwy 99 and Hwy 149; ca. 11 mi se of Chico (Hwy 32). 60 Comment
  HSC92442  Hordeum marinum subsp. gussoneanum L. Ahart 1975-5-12 757 Butte Peter Ahart Ranch, about 1 1/2 mi. N and 1 mi. E of Honcut. 12 mi. S of Oroville. Comment
  UC1132515  Hordeum marinum subsp. gussoneanum C. G. Albertus 1933-5-29 7 Butte 1 1/2 mi n Wick; Chico Quad. Comment
  CAS-BOT-BC284886  Hordeum murinum subsp. leporinum Lowell Ahart 1977-6-2 1509 Butte Peter Ahart Ranch, Honcut 50 Comment
  JEPS115240  Hordeum murinum subsp. leporinum Lowell Ahart 2009-4-3 15536 Butte Along the south side of the gravel road, east of the Cedar Grove parking area in Lower Bidwell Park, Chico 67 Comment
  OBI48987  Horkelia tridentata Lewis S. Rose 1939-6-6 39231 Butte 2 mi NE of Clipper Mills Comment
  CHSC43125  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-5 2141 Butte Near confluence of Ram and French Creeks. 609 Comment
  CHSC43215  Horkelia tridentata subsp. flavescens L. P. Janeway 1987-6-20 2262 Butte SE-facing slope above Rock Cr 2.0 mi from Lumpkin Ridge on road to Moorville Ridge. At edge of road. 1104 Comment
  CHSC28390  Hosackia oblongifolia J. D. Jokerst 1979-8-12 320 Butte 1.0 mi W. of Kimshew Falls and W. Branch Feather River. Along creek bed. Comment
  CHSC33103  Hosackia stipularis var. ottleyi M. S. Taylor 1981-5-15 3749 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 air mi due e of Jarbo Gap on Feather River Hwy 70. 944 Comment
  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
  CHSC99554  Hosackia stipularis var. ottleyi L. P. Janeway 2008-5-26 9391 Butte Northern High Sierra Nevada. Low ridge near saddle at head of Empire Creek, about 1.6 km west of Flea Valley. 1097 Comment
  CHSC20536  Hydrangea arborescens Pamela Caldwell 1971-11-7 Butte CSUC campus. N bank of Chico Creek. Amphitheater. Comment
  CHSC55469  Hydrocotyle umbellata L. P. Janeway 1991-4-21 3916 Butte About 1 1/4 mi south of Wyandotte and 1/8 mi west of Dunstone Road. 167 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
  UC600534  Hypericum anagalloides H. F. Copeland 1930-7-24 Butte Jonesville Comment
  CHSC10830  Hypericum concinnum Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC48480  Hypericum formosum var. scouleri Vernon Oswald 1983-7-26 917 Butte Near Soda Springs Campground off of Calif. Hwy 32, 18.1 mi n=e of Forest Ranch. Growing in a wet, marshy spot beside Chico Creek. 1158 Comment
  UC600532  Hypericum formosum var. scouleri E. B. Copeland July, 1929 Butte Jonesville 1550 Comment
  CHSC58922  Hypericum mutilum Lowell Ahart 1992-7-23 6829 Butte Growing on wet soil on the north side of the Termalito Diversion Pool, near Longs Bar Monument, Lake Oroville Recreation Area, about 2 miles west of Oroville Dam. 76 Comment
  CHSC78385  Hypericum mutilum Lowell Ahart 2000-7-18 8602 Butte On the margins of a small pond, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville. 42 Comment
  CHSC742  Hypericum perforatum R. Carter 1964-6-10 112 Butte 8 mi. E of Oroville at 6120 Woodleaf St. Rt. 10 yds. behind house. 121 Comment
  CHSC94032  Hypericum perforatum R. D. Fischer 2005-6-6 737 Butte Sierra Nevada foothills, off Hwy. 32, on 10 Mile House Road in Bidwell Park about 4 miles east of Chico. Plants found growing near trailhead adjacent highway. 457 Comment
  JEPS114712  Hypochaeris glabra Lowell Ahart 2008-5-21 14767 Butte 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
  UCD146240  Hypochaeris glabra Daniel S. Park; D. Potter, S. M. Still, J. J. Petersen, Y. Zhuang 2010-4-10 11 Butte Table Mt. Cherokee Rd. 355 Comment
  CAS-BOT-BC133557  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-23 22528 Butte 3 mi. SE. from turn-off, Hwy. 32 to De Sabla 670 Comment
  POM109028  Iris hartwegii C. C. Bruce 1898-05 2408 Butte Doe mill Comment
  SEINET10469747  Iris hartwegii Mary Susan Taylor 1980-5-27 Taylor 2646 Butte T21N R6E sc sec 30. Big Bend quad. On trail (around parking lot) to Big Bald Rock, ca. 3 mi E of Lake Madrone; Yellow Pine Forest, granitic soils. 998 Comment
  CHSC21828  Iris macrosiphon J. C. McDonald 1971-3-15 4 Butte Ca. 10 yards n Cohasset road and ca. 3.5 mi ne of Chico Municipal Airport. 152 Comment
  CHSC24910  Iris macrosiphon T. L. Reynolds 1976-4-23 56 Butte 0.3 mi ne of Covered Bridge, 7.2 mi ese of Chico. Comment
  UC600579  Isoetes bolanderi H. F. Copeland August, 1924 543 Butte Butte Creek house Jonesville Comment
  CHSC44462  Isoetes howellii Lowell Ahart 1988-4-6 5957 Butte East of North Honcut Creek, on the Joie Osgood Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 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
  CDA42452  Isoetes howellii T. C. Fuller 1958-4-15 4793 Butte Highway 99E, 10 miles northwest of Chico. 0 Comment
  JEPS127195  Isoetes nuttallii Lowell Ahart 2016-5-15 20831 Butte Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles southeast of Oroville. Comment
  CHSC45185  Isolepis cernua Lowell Ahart 1975-6-19 788 Butte Along the edges of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  UC1609032  Isolepis setacea Lowell Ahart 1993-7-22 7082 Butte about 6 (air) mi ne Feather Falls (w of the bridge across Fall River); Fall River, ne of Feather Falls 1036 Comment
  CAS-BOT-BC112642  Isolepis setacea Lowell Ahart 1983-6-12 4047 Butte 7 mi SW of Feather Falls 425 Comment
  CAS-BOT-BC340243  Jensia rammii Lewis S. Rose 1937-6-10 37357 Butte Hurleton 579 Comment
  CHSC107601  Jensia rammii Lowell Ahart 2011-7-9 17569 Butte On the west edge of a large open bare granite area, about 3/8 mile northeast of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 967 Comment
  CAS-BOT-BC340244  Jensia rammii Lowell Ahart 1980-4-21 2105 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC109602  Juglans hindsii Lowell Ahart; Susan Bazell, Josephine Guardino 2012-5-31 18118 Butte On the north bank of Big Chico Creek, on the south side of the paved park road (Peterson Drive) about 300 yards west of the gate, Lower Bidwwell Park, Chico. 76 Comment
  JEPS119622  Juglans nigra Lowell Ahart 2012-6-21 18209 Butte About 250 yards east of the dam at Sycamore Pool, Lower Bidwell Park, Chico. Comment
  SEINET10938201  Juncus Mary Susan Taylor 1980-5-27 Taylor 2676 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
  CAS-BOT-BC110011  Juncus Mrs. R. M. Austin 1883-1-1 s.n. Butte Unspecified. Comment
  CHSC79612  Juncus acuminatus G. F. Hrusa; T. D. Wilfred 1997-7-3 13965 Butte Sierra Nevada. NE side of upper end of Paradise Lake. Where last tributaries from E enter. [Lat./Long. on label is '39 52 N; 121 35 W']. 775 Comment
  CHSC28657  Juncus articulatus J. D. Jokerst 1979-10-12 375 Butte 1.0 mi. N. E. of end of Upper Park Rd., 50 met. E. of Big Chico Cr. 213 Comment
  CHSC2213  Juncus balticus I. Boyd 1949-5-20 Butte Centerville road just beyond Dunford's. 152 Comment
  CHSC26800  Juncus bufonius var. bufonius M. S. Taylor; M. Hayes 1978-4-14 1559 Butte 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
  CHSC99312  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 A Butte Along a small drainage, below the high water line of Lake Oroville, about 300 yards east of the Enterprise Boat Launch Area, about 10 1/2 miles (air) northeast of Oroville. 223 Comment
  JEPS120656  Juncus bufonius var. bufonius Lowell Ahart 2013-10-26 19221 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. Comment
  JEPS94875  Juncus bufonius var. congestus Lowell Ahart 1998-5-2 7957 Butte about 5 air mi sw of Gridley (n side of Evans Reimer Road, about 1/4 mi e of Pennington Road); Evans Reimer Road 21 Comment
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1
  CHSC46600  Juncus bufonius var. occidentalis V. Oswald; L. Ahart 1989-7-21 3868 Butte Junction of Willow and Colby creeks on the n side of Humboldt Rd, ca. 1 mi w of Jonesville. On the w side of Colby Creek. 1487 Comment
  CHSC35700  Juncus capitatus J. D. Jokerst 1982-5-1 1548 Butte Top of North Table Mt. SE of Cherokee Rd near the Mesa's edge ca 300 met SE of Rd. Comment
  UC183502  Juncus effusus subsp. pacificus A. A. Heller 1913-6-4 10773 Butte n of Oroville (Table Mountain Olive Ranch) Comment
  CHSC111068  Juncus effusus subsp. pacificus Barbara L. Wilson; Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16759 Butte 6.5 miles from junction (which is at edge of community of Feather Falls) with Lumpkin Road, on paved logging road that people use instead of of gravel Lumpkin Road; UTM 10 655439 east, 4387540 north. 1242 Comment
  CHSC11961  Juncus ensifolius E. B. Copeland 1929-7-16 346 Butte Jonesville. In marsh. 1550 Comment
  CHSC50697  Juncus ensifolius Lowell Ahart 1990-5-25 6488 Butte Along a small stream, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville. 259 Comment
  CHSC78335  Juncus ensifolius Lowell Ahart 2000-7-11 8568 Butte On the sides of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  JEPS113537  Juncus ensifolius Lowell Ahart, Lawrence Janeway, Linnea Hanson 2007-7-10 14279 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
  CHSC47555  Juncus howellii Lowell Ahart 1984-7-19 4749 Butte In a small meadow, along Retson Road, about 1 1/2 miles southeast of Bald Mountain, 1/4 mile east of Oak Point, about 5 miles northeast of Stirling City. 1371 Comment
  JEPS113855  Juncus howellii Lowell Ahart 2007-7-2 14245 Butte North road gutter, Bald Rock Road, about 100 yards northeast of the intersection of Bald Rock Road and Rockerfeller Road, about 13 miles (air) northeast of Oroville 762 Comment
  RSA712644  Juncus laccatus L. P. Janeway 2005-7-16 8494 Butte Along Road 24N13 at small side drainage west to Lockerman Creek, opposite confluence of Lockerman Creek at Camp Creek. 969 Comment
  CHSC31910  Juncus leiospermus var. ahartii L. Ahart 1974-4-24 423 Butte In small vernal pool. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC36223  Juncus leiospermus var. ahartii L. Ahart 1982-5-1 3401 Butte Around edges of a large vernal pool in one of the farmed fields, Peter Ahart Ranch, ca. 2 mi n and 0.5 mi e of Honcut. 50 Comment
  JEPS110149  Juncus leiospermus var. ahartii Lowell Ahart 2006-4-27 12538 Butte In a vernal pool, about 100 yards north of the tower by the south fence, pasture fields, Peter Ahart Ranch, about 1 mile north and 1 3/4 miles east of Honcut 58 Comment
  CHSC28970  Juncus leiospermus var. leiospermus J. D. Jokerst 1979-4-2 481 Butte Around edges of vernal pool, restricted to the edge of high water mark. Top of North Table Mt. ca 200 m SW of the jct of the east edge of Mt and Cherokee Rd. 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
  UC1446143  Juncus leiospermus var. leiospermus Lowell Ahart 1979-5-7 1857 Butte 2.5 mi se Paradise (0.5 mi n of Kunkle Reservoir, ca 0.25 mi e of the Pentz-Magalia Hwy) 472 Comment
  CHSC46465  Juncus nevadensis V. Oswald; L. Ahart 1989-6-27 3827 Butte Humbug Rd at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. In a large meadow along Butte Creek. 1767 Comment
  CHSC105531  Juncus orthophyllus Lowell Ahart 2010-9-21 17217 Butte On damp bare soil, open meadow like area in red fir forest, near a poor camp, 30 yards west of Big Kimshew Creek, about 1 1/2 miles (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrood Reservoir. 1917 Comment
  CHSC41298  Juncus orthophyllus S. C. Morey 1983-7-21 494 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC74026  Juncus oxymeris B. Castro 1998-7-8 804 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. At end of old dirt rd at E edge of old homestead site. Along footpath. 929 Comment
  JEPS102314  Juncus patens Lowell Ahart 2001-7-6 8881 Butte 12 mi SW of Chico (W of a large pond, large overflow area on E side of Sacramento River, NW of Parrott Landing, 1 mi SE of Ord Ferry, 2 mi SE of Ord bend[sic]) 32 Comment
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Nov 27 2006
  CHSC99012  Juncus triformis Lowell Ahart 2008-5-30 14791 Butte Dry to damp bare granite soil, along a small drainage, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CAS-BOT-BC279912  Juncus trilocularis Peter F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Highway, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill, northern Sierra Nevada Highlands (n SNH) 830 Comment
  CHSC98997  Juncus trilocularis Lowell Ahart 2008-5-30 14792 A Butte Dry to damp bare granite soil, northwest part of the top of Big Bald Rock, about 14 miles (air) northeast of Oroville. 975 Comment
  CHSC106863  Juncus uncialis Lowell Ahart 2011-5-2 17347 Butte Open pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 32 Comment
  UCD142845  Juncus uncialis Lowell Ahart 1974-4-11 363 Butte Peter Ahart Ranch, about 2.25 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC97263  Juncus usitatus Lowell Ahart 2007-8-19 14493 Butte About 2 1/4 miles (air) southeast of Honcut, about 13 miles (air) southeast of Oroville. 49 Comment
  JEPS113762  Juncus usitatus Lowell Ahart 2007-7-31 14400 B Butte On the south strand of Thermalito Afterbay, about 150 yards north of Highway 162, about 5 1/4 miles west of the intersection of Highway 162 and Highway 70, about 5 3/4 miles (air) west of Oroville 34 Comment
  JEPS115986  Juncus usitatus Lowell Ahart 2009-7-4 15999 Butte On the side of a pond, on the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Watefowl Management Area, about 6 miles (air) southwest of Gridley 21 Comment
  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
  CHSC69053  Kelloggia galioides Lowell Ahart 1997-8-1 7802 Butte On the south side of the County Road, southwest of Keyser Creek, about 1 1/2 miles southeast of Bald Mountain, about 6 miles (air) northeast of Stirling City. 1432 Comment
  CHSC103990  Koeleria phleoides Lowell Ahart 2010-5-14 16637 Butte Along the east side of the poor dirt road, parking area, about 100 yards north of the entrance to the Disc Golf Area, west side of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 394 Comment
  UC480953  Kumlienia hystricula Mrs. R. M. Austin 1890-4 226 Butte Little Chico Canyon Comment
  CAS-BOT-BC340331  Kyhosia bolanderi H. M. Hall 1914-7-30 9815 Butte Near Jonesville Comment
  CHSC32543  Lactuca serriola S. Posner 1972-9-21 Butte 100 yds. west of Nord Ave, 200 yards south of Sacramento Ave., in almond orchard. Chico. Comment
  CAS-BOT-BC340535  Lactuca serriola John Thomas Howell 1959-9-20 34628 Butte Eastern outskirts of Oroville 60 Comment
  CHSC46947  Lagophylla glandulosa Lowell Ahart 1977-9-20 1584 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CAS-BOT-BC341309  Lagophylla glandulosa H. M. Hall 1914-7-19 9762 Butte Richardson Spring Comment
  CAS-BOT-BC341316  Lagophylla glandulosa David D. Keck 1932-7-2 1612 Butte 6 miles NE. of Oroville. (On road to Quincy) 250 Comment
  SEINET10497957  Lamium amplexicaule Mary Susan Taylor 1982-4-28 Taylor 4379 Butte T17N R1E sec 15 & 16. Pennington quad. Along road loop around HQ, Graylodge Wildlife Refuge, ca. 12 mi sw of Gridley. 54 ft. 16 Comment
  CHSC90582  Lasthenia californica C. A. Bordin 1983-4-14 13 Butte Ca. 4 mi e of Durham and 0.3 mi w of Hwy 99 to Durham Dayton Hwy and ne corner of Oro Chico Hwy intersection. 54 Comment
  SEINET11806701  Lasthenia californica Unknown 1981-1 15 Butte 1 mi E of Chico, 100 yds S from Hwy 32 76 Comment
  CAS-BOT-BC324474  Lasthenia ferrisiae A. A. Heller 1914-5-13 11394 Butte Along Butee Creek between Durham and Nelson 53 Comment
  JEPS119708  Lasthenia fremontii Lowell Ahart 2012-5-2 17963 Butte About 30 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. Comment
  CAS-BOT-BC354120  Lasthenia fremontii Ahart Lowell 1980-5-10 2222 Butte Valley Grassland. Peter Ahart Ranch, Honcut. 50 Comment
  POM29957  Lasthenia fremontii C. C. Bruce 1897-04 2071 Butte Oroville road. Comment
  POM55153  Lasthenia fremontii A. A. Heller, H. E. Brown 1902-5-2 5441 Butte Near Butte City Comment
  UCD133699  Lasthenia fremontii L. Ahart 1978-5-1 1693 Butte Ahart Ranch, Honcut. 50 Comment
  CHSC110444  Lasthenia glaberrima B. Castro 2007-3-29 1619 Butte Sacramento Valley. Ca 0.8 mi SE of Chico Airport, N of Sycamore Creek and E of Cohasset Rd in area of grassland and scattered shallow vernal pools. 57 Comment
  SEINET10475229  Lasthenia glabrata Mary Susan Taylor 1975-4-11 Taylor 422 A Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  HSC32637  Lasthenia gracilis R. A. Vanbianchi 1974-4-20 241 Butte Table Mtn. 305 Comment
  CHSC35629  Lasthenia platycarpha R. E. Preston 1982-3-22 196 B Butte Ca. 50 ft e of Hwy 149, ca. 3/4 mi e of Hwy 99, ca. 10.5 mi nw of Oroville. 60 Comment
  CHSC50323  Lathyrus brownii Vernon Oswald; Lowell Ahart 1990-5-29 4264 Butte Logging Rd (F-Line) on the west side of Butte Creek, at the camping area ca. 0.4 mile southwest of Humboldt Rd, ca. 1.5 mi west-southwest of Butte Meadows. 1316 Comment
  CHSC3297  Lathyrus latifolius Robert L. Smith 1966-4-19 30 Butte Honey Run Rd. 1 miles W. of Paradise, Calif. Comment
  JEPS119626  Lathyrus latifolius Lowell Ahart 2012-6-14 18196 Butte Annie's Glen, Lower Bidwell Park, 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
  RSA517347  Lathyrus sphaericus Barbara J. Ertter, Lowell Ahart 1986-4-13 5887 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  UC1561885  Lathyrus sphaericus Barbara Ertter with Lowell Ahart 1986-4-13 5887 Butte ca 2 air mi nne Honcut (Peter Ahart Ranch, between Oroville and Marysville) 30 Comment
  CHSC90505  Lathyrus sulphureus J. Marr 1988-4-20 3 Butte Ca. 25 ft. n side of Honeyrun Rd., Paradise. 9 mi ese of Chico. 243 Comment
  UCR190827  Lathyrus vestitus Ken Osborne 2007-5-13 s.n. Butte Sierra Nevada Foothills, along Ponderosa Way at Mud Creek, c. 1.5 mi. SE of Cohasset 701 Comment
  CHSC2831  Layia fremontii David Prall 1965-3-28 16 Butte In field east of Meridian Rd. 8 miles NE of HW. 99E north of Chico. 60 Comment
  CHSC375  Layia fremontii E. Canfield 1904-4-1 Butte Richardson Springs road. 84 Comment
  HSC43118  Layia fremontii Maralyn O'Meara 1974-4-20 269 Butte Skyway Drive, 1 mi. E of Hwy. 99 61 Comment
  SFV8419  Layia fremontii K. Corson 1969-4-6 8 Butte Just past disposal site, 3 miles east of Chico. Comment
  UCR238596  Layia platyglossa George K. Helmkamp, E. A. Helmkamp 2012-2-9 18547 Butte Sacramento Valley, W of Oroville & N of Gridley, west side of CA-99, 0.1 mile south of its junction with CA-162/Biggs-Willows Rd. 43 Comment
  CHSC21068  Lemna minor M. S. Taylor 1975-10-3 949 Butte Between Sacramento River and River Rd, ca. 10 mi w of Chico. 36 Comment
  SEINET10465992  Lemna minor Mary Susan Taylor 1975-10-3 Taylor 944 Butte Ca. 1/4 mile N of the Washout, between River Road and the Sacramento River, ca. 10 mi W of Chico. Riparian Woodland and sloughs, wet and humid. 37 Comment
  CDA42937  Lemna minuta L. Ahart 2012-10-2 18491 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC112602  Lemna minuta Lowell Ahart 2013-9-20 19063 Butte Along a ditch, about 20 yards north of Hamilton Road, about 1/8 mile east of Riceton Highway, about one mile southeast of the Rice Experiment Station. 30 Comment
  CHSC89492  Leontodon saxatilis subsp. longirostris R. D. Fischer 2004-6-6 443 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located at top of 10 Mile House Road near gated beginning of park property, at Hwy 32. In roadbed. 464 Comment
  CHSC103735  Leontodon taraxacoides subsp. longirostris Lowell Ahart 2010-5-16 16700 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
  SEINET10498876  Lepechinia calycina Mary Susan Taylor 1980-5-31 Taylor 2768 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
  CHSC46285  Lepidium campestre Vernon Oswald 1989-5-16 3769 Butte Cohasset Rd, 1.2 mi s of Cohasset School. Roadside. 731 Comment
  CHSC90642  Lepidium didymum Lowell Ahart 2005-4-2 11685 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 25 Comment
  CAS-BOT-BC89698  Lepidium latifolium Lowell Ahart 1982-7-10 3667 Butte Gray Lodge chek in station parking area, about 12 miles southwest of Gridley. 35 Comment
  CHSC3239  Lepidium nitidum Virginia Hagaman 1966-3-12 57 Butte 1/2 mile northeast of Hooker Oak along stream bank, in Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC89882  Lepidium nitidum Lowell Ahart 1980-3-11 2039 Butte Peter Ahart Ranch. Honcut. 50 Comment
  CHSC77816  Lepidium pinnatifidum Lowell Ahart 2000-3-25 8325 Butte Around the margins of the lawn on the south side of the Ehmann Home, northeast of the Oroville Post Office, Oroville. 36 Comment
  CHSC35641  Lepidium strictum R. E. Preston 1982-4-7 225 Butte At edge of almond orchard; nw corner jct of Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  CHSC90625  Lepidium strictum Sally A. Carter 1988-4-12 1 Butte South side of Little Butte Creek, about 8.8 mi east-southeast of Chico, 200 ft west of Honey Run Road. 160 Comment
  CHSC94004  Lepidium strictum R. Fischer 2005-4-10 676 Butte Collection from along Hwy. 32, ca. 4 miles north of Chico in Bidwell Park. On the road bed of the 10 Mile House Road at the trail head. 457 Comment
  CHSC118871  Leptochloa fascicularis D. G. Kelch 2009-10-8 09 .663 Butte West of Lemoore, east of Lemoore NAS (Navel Air Station). Jackson Avenue, 1 kilometer east of Avenal Cutoff Road, south of Highway 198. Along river channel. 61 Comment
  UC1132180  Leptochloa fascicularis H. S. Yates 1936-8-14 6126 Butte 3 mi nnw Nelson; Chico Quadrangle Comment
  CAS-BOT-BC273948  Leptochloa fusca subsp. fascicularis Lowell Ahart 1983-10-11 3858 Butte West of the check-in station, Gray Lodge, about 12 mi. SW of Gridley 35 Comment
  CAS-BOT-BC273956  Leptochloa fusca subsp. fascicularis Forman T. McLean 1921-11-25 29 Butte Nelson Comment
  CHSC117322  Leptochloa fusca subsp. fascicularis B. Castro 2008-7-15 1759 Butte Sacramento Valley. Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 E of the Midway. Near jcn of Cherokee Canal, Southern Pacific RR and the Biggs Extension canal, along edge of rice field in adjacent ditch. 31 Comment
  CHSC38810  Leptochloa fusca subsp. fusca Vernon Oswald 1983-8-2 945 Butte Upper Bidwell Park, Chico, in Lindo Channel ca. 100 ft e of the flood-control gates. Along the edge of the stream. 79 Comment
  CHSC45450  Leptosiphon acicularis Lowell Ahart 1979-4-22 1834 Butte Pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
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Jul 19 2018
  CHSC92564  Leptosiphon bicolor L. P. Janeway 2005-3-10 8353 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS124394  Leptosiphon ciliatus Lowell Ahart 2015-6-16 20236 Butte About 4 miles (by road) northwest of Fall River Bridge, about 5 1/2 miles (air) northwest of Camp 18, about 9 miles (air) northeast of Feather Falls. Comment
  SBBG98248  Leptosiphon ciliatus H. F. Copeland 1931-6-11 1530 Butte woods above Butte Crk Meadows, Jonesville 1828 Comment
  SJSU8718  Leptosiphon filipes J. B. Willis Jr. 1969-5-3 91 Butte near Cherokee Rd 7.5 mi NE of Oroville Comment
  CHSC11953  Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville. Flats along Butte Creek. 1500 Comment
  CHSC27960  Leptosiphon harknessii M. S. Taylor 1978-7-19 1772 Butte On e side of Upper Scotts John Rd, ca. 3 mi n of its jct with Scotts John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC21238  Leptosiphon parviflorus M. S. Taylor 1974-5-3 212 Butte In meadow ca. 500 yds e of Hwy 70, ca. 15 mi n of Oroville. Comment
  CAS-BOT-BC123155  Leptotaenia humilis C. C. (Mrs.) Bruce 1897-5-1 2061 Butte Plains near Chico Comment
  CHSC31081  Lessingia nemaclada R. Banchero; D. Ikeda, J. Nelson 1979-9-29 43 Butte Bear Ranch Crk, 1.2 mi sw of crossing of Hwy 70 with Butte County line. 609 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
  RSA718954  Lessingia nemaclada L. Ahart 2006-9-28 13362 Butte About 50 yards west of the falls on Bear Ranch Creek, about 10 yards north of the tunnel and Bear Ranch Creek, about 1/8 mile east of Highway 70, about 1/4 mile southeast of the Shady Rest Area south of the Arch Rock Tunnel 481 Comment
  CAS-BOT-BC341787  Lessingia nemaclada John Thomas Howell 1951-8-19 28163 Butte Above Arch Rock Tunnel, Feather River 457 Comment
  CHSC97256  Lewisia cantelovii Lowell Ahart 2007-5-16 13894 Butte On the east side of Highway 70, about 150 yards no ... Field redacted by CHSC, contact the data manager for more information 463 Comment
  UCD101590  Lewisia cantelovii M. Vincent 1968-6-10 853 Butte 1.5 miles south of Rock Creek Dam. Comment
  CHSC42584  Ligusticum californicum Vernon Oswald 1983-6-22 729 Butte Near Calif. Hwy. 32 11.7 mi n-e of Forest Ranch. 1143 Comment
  CHSC42585  Ligusticum californicum Vernon Oswald 1985-6-30 1871 Butte Cohasset Rd. 0.7 mi n of KHSL transmission tower. 1109 Comment
  CHSC33967  Ligusticum grayi M. S. Taylor; L. Ahart 1981-8-15 4191 A Butte S side of Coon Hollow Rd (26N74), 1.1 mi e of its jct with Humbug Rd, ca. 12 mi ne of Stirling City; 1676 Comment
  CHSC105951  Ligustrum japonicum Lowell Ahart 2010-9-24 17239 Butte Near the north edge of the Golf Course, about 200 yards northeast of the footbridge, about 250 yards northeast of the Golf Club House, about 50 yards south of Big Chico Creek, Bidwell Park. 99 Comment
  SEINET3887042  Lilaea scilloides Barbara Ertter 1980-5-7 3310 Butte North Table Mountain ca 5 air-miles north of Oroville, flat-topped basalt butte, near parking area.; 0 396 Comment
  CAS-BOT-BC130568  Lilium humboldtii A. A. Heller 1923-6-10 13743 Butte Near the Sacramento River west of Chico Comment
  UC478545  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CAS-BOT-BC130702  Lilium pardalinum A. A. Heller 1928-6-16 14622 Butte Butte Meadows Comment
  SD708  Lilium pardalinum subsp. shastense E. B. Copeland 1930-7-18 614 Butte Jonesville, along creeks and in damp woods. 456 Comment
  CHSC4681  Lilium washingtonianum subsp. washingtonianum R. Carter 1966-6-15 439 Butte 1.5 mi. S of Brush Creek along W side of Bald Rock Rd. Comment
  CHSC23668  Limnanthes alba M. S. Taylor 1976-4-27 1094 Butte On n side of Ponderosa Way, ca. 6 mi e of junc of Ponderosa Way and Cohasset Hwy, ca. 23 mi ne of Chico. On road embankment. 609 Comment
  CAS-BOT-BC110624  Limnanthes alba Lowell Ahart 1980-4-28 2113 Butte Peter Ahart Ranch, near Honcut. 50 Comment
  POM197061  Limnanthes alba H. F. Copeland 1929-5-4 1129 Butte Near Chico. Comment
  POM282581  Limnanthes alba Hattie Morrison 1928-05 s.n. Butte Near Oroville, Sierra Nevada Mountain Range, Feather River. Upper Sonoran. 305 Comment
  UCD85027  Limnanthes alba subsp. alba Dena Grossenbacher; Joel Smith 2009-5-9 986 Butte On south shore of Wyandotte Lake along Forbes Town Road, 2.0 miles east of Highway 62. 426 Comment
  CHSC1007  Limnanthes alba subsp. versicolor V. Holt 1942-4-25 Butte Nimshew grade. 365 Comment
  SEINET12183045  Limnanthes douglasii K. E. Warwick 1978-1 6 Butte ca 20 m N of Skyway (Rd.), .5 km e of intersection of Skyway and Notre Dame Blvd., Chico Comment
  SEINET12183346  Limnanthes douglasii Unknown 1978-1 4 Butte Table Mtn. ca 6 mi S on Cherokee Rd. from Hwy 70, W side of road, ca 5.5 mi n of Oroville; Comment
  UCSB63634  Limnanthes douglasii O'Connor-Henry, K. 1985-4-19 Butte North Table Mtn., ca. 500 yd. w of Cherokee Rd. and 4.5 mi. n of Oroville 365 Comment
  CHSC102546  Limnanthes floccosa subsp. californica Elena Gregg 2010-3-31 Butte Northern Sacramento Valley. Near the base of the foothills in-between where Wookey road and Munjar Road terminate. 106 Comment
  CHSC54010  Limnanthes floccosa subsp. californica Vernon H. Oswald 1991-3-30 4476 Butte Hwy 149, 0.9 mi northwest of Hwy 70 at Wicks Corner, ca. 7 mi northwest of Oroville. In drainage on top of road cut on the south side of the highway. 80 Comment
  JEPS107699  Limnophila X ludoviciana Lowell Ahart 2005-9-13 12368 Butte On the Rice Experiment Station, between the Main Ditch and Stine Lateral, on the north side of Hamilton Road, about 1/4 mile east of Riceton Road Comment
  CHSC114380  Limnophila X ludoviciana Cass 2012-10-31 Butte Nelson; Aguas Frias Road and Nelson Road. Comment
  CHSC113244  Limosella acaulis Lowell Ahart 2014-4-26 19413 Butte Sides of a cleaned ditch, on the south side of Butte City Highway (Highway 162), collected from the railroad to the east about 200 yards, east of the Rice Experimental Station. 30 Comment
  UC726827  Linanthus filipes A. A. Heller 1938-6-14 15154 Butte about 2 mi w Arch Rock Tunnel (on Feather River Highway) Comment
  UC478476  Linanthus harknessii E. B. Copeland 1931-7-1 681 Butte Butte Creek Jonesville 1500 Comment
  CHSC103972  Linanthus parviflorus Lowell Ahart 2010-5-7 16628 Butte On both sides of Guardian Trail, about 1/2 miles west of Highway 32, Upper Bidwell Park, about 4 1/2 miles (air) northeast of Chico. 238 Comment
  CHSC112333  Lindernia dubia var. anagallidea Lowell Ahart 2013-7-9 18832 Butte South side of North Honcut Creek, west of the steel power line, about 2 mile (air) northeast of Honcut, about 13 miles (air) southeast of Oroville. 37 Comment
  CHSC96950  Lindernia dubia var. anagallidea Lowell Ahart 2007-7-8 14271 Butte On the north 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
  CHSC76029  Lindernia dubia var. dubia Vernon H. Oswald 1999-8-29 9839 Butte Gravel bar on the east side of the Sacramento River downstream from Ord Ferry Bridge at the northwest corner of Rancho Llano Seco. 28 Comment
  CDA13285  Linnaea borealis var. longiflora G. F. Hrusa, T. D. Wilfred 1996-7-9 13133 Butte Plumas National Forest; along Jordan Ck, at top of waterfall above confluence with Marble Creek. S of Hwy 162 near Roger's Cow Camp Comment
  CDA42840  Linum bienne L. Ahart 2011-6-5 17365 Butte On the west edge of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. Comment
  CHSC55618  Lipocarpha L. P. Janeway 1986-9-20 1880 Butte At edge of gravel bar along east side of Sacramento River, just southeast of the Ord Ferry Road bridge. 28 Comment
  CHSC75980  Lipocarpha micrantha Lowell Ahart 1999-8-13 8180 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
  CHSC110975  Liquidambar styraciflua Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18233 Butte Lawn, on the northeast side of Sycamore Pool, Lower Bidwell Park Chico. 61 Comment
  SEINET10533521  Liquidambar styraciflua Mary Susan Taylor 1975-5-6 Taylor 563 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  CHSC62459  Lithocarpus densiflorus var. echinoides L. P. Janeway; Josephine Guardino 1993-9-18 4592 Butte Plumas National Forest. Top of ridge between North Fork Feather River and French Creek basin. About 0.1 mi north of 4-Trees Road; ca 1.25 mi northeast of Coyote Gap. 1463 Comment
  CHSC11075  Lithophragma bolanderi Lowell Ahart 1968-3-13 Butte Peter Ahart Ranch, Honcut. 42 Comment
  CHSC118507  Lithophragma bolanderi L. P. Janeway 2016-5-9 11957 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 andRoad 19N19. 701 Comment
  CHSC42858  Lithophragma glabrum Lowell Ahart 1987-5-12 5646 Butte On a black lava rock, near seeps, south of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC92562  Lithophragma parviflorum var. trifoliatum L. P. Janeway 2005-3-10 8354 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast 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
  UC203667  Lolium temulentum A. A. Heller 1914-6-2 11475 Butte 8 mi n Oroville Comment
  CHSC42624  Lomatium marginatum var. marginatum Vernon Oswald 1985-4-3 1695 Butte Concow Rd. n of Lake Concow. 792 Comment
  CHSC8587  Lomatium utriculatum G. Smalley 1968-3-17 Butte Collected on south side of block faulted Chico Monocline, ca. 1 mile east of Bidwell Park golf club. 106 Comment
  CAS-BOT-BC240448  Lonicera hispidula Margaret J. Williams; Wayne Roderick 1984-5-25 84- 23 -1 Butte Feather River Canyon, Hwy 70, 1.5 mi W of Poe Power Dam 457 Comment
  UC864769  Lotus argophyllus var. fremontii Lewis S. Rose 1940-5-30 40424 Butte 25 mi ne Oroville; Feather River Canyon 609 Comment
  UC1562314  Lotus grandiflorus var. macranthus Vernon Oswald and Lowell Ahart 1990-6-27 4324 Butte ca 0.5 mi (air) nne Junction House (Jordan Creek-Marble Creek Rd (23N60) near Spoon Ravine, e side of Oro-Quincy Hwy) 1097 Comment
  SEINET10973161  Lotus grandiflorus var. macranthus Mary Susan Taylor 1981-5-4 Taylor 3593 Butte T21N R5E ne/se sec 24, Brush Creek quad. Ca. 1/8 mi SW of 2lN80, S side of spur rd near plantation, ridge S of Galen Ridge, ca. 3 mi SW of Brush Creek. Yellow Pine Forest; 3000 ft. 914 Comment
  UC426913  Lotus oblongifolius var. oblongifolius E. B. Copeland 1930-7-11 420 Butte Jonesville 1500 Comment
  UCD65937  Ludwigia hexapetala Robert McKee; Greg Woods 2006-8-1 06- 29 -LU Butte Oroville Wildlife Area, immediately east of Feather River, south of Thermolito and Oroville. 9 Comment
  UCD66033  Ludwigia hexapetala R. McKee; G. Woods 2006-8-1 06- 30 -LU Butte Oroville Wildlife Area, e. of Feather River, w. of Hwy 70 access from Pacific Hts Rd. 30 Comment
  UCD66040  Ludwigia hexapetala B. J. Grewell 2005-10-13 05- 37 -LU Butte Upper Butte Wildlife Area, Little Dry Creek Unit, Dept of Fish and Game, Colusa - Gridley Hwy. 20 Comment
  JEPS113569  Ludwigia palustris Lowell Ahart 2007-7-27 14391 Butte S strand of the Thermalito Afterbay, about 200 yds N of Hwy 162, about 5 mi W of the intersection of Hwy 162 and Hwy 70, about 51/2 mi (air) W of Oroville 36 Comment
  JEPS115647  Ludwigia palustris Lowell Ahart 2009-8-13 16275 Butte In the channel about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park, Chico 68 Comment
  CHSC28425  Ludwigia peploides M. S. Taylor 1979-10-2 2206 Butte Sacramento River sandbar, ca. 5 mi w of Chico. 30 Comment
  CHSC93351  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap. 548 Comment
  JEPS110472  Lunaria annua Lowell Ahart 2006-5-3 12554 Butte About 75 yards southeast of the Concow Grange building, on the west side of Big Bend Road, about 1 1/4 miles (air) south of Jarbo Gap 548 Comment
  POM24313  Lupinus affinis C. C. Bruce 1897-04 2029 Butte Chico Comment
  RSA3766  Lupinus albifrons var. eminens A. A. Heller 1912-4-16 14340 Butte On the rocky slope of East butte, Marysville Buttes, in the Sacramento Valley. Comment
  SEINET5558506  Lupinus andersonii H. S. Gentry, S. Koch 1962-1 19781 Butte Forest Ranch, along Rt. 32. Comment
  CHSC90489  Lupinus bicolor Steve Alvarez 1980-3-24 17 Butte Ca. 4.7 km e of Chico, 2.1 km wsw of Paradise, 0.1 km s of n edge of Coon Ridge, 0.2 km n of Skyway road. 270 Comment
  UCD107176  Lupinus bicolor H. A. Hannesson; R. N. Raynor 1941-5-9 s.n. Butte 4 miles N of Gridley. Comment
  UCD107232  Lupinus bicolor A. A. Heller 1915-4-20 11857 Butte 7 miles below Cenerville in the Sierra foothills. 76 Comment
  UCR237327  Lupinus bicolor George K. Helmkamp, E. A. Helmkamp 2012-4-14 18737 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  RSA32827  Lupinus bicolor subsp. tridentatus A. A. Heller 1939-4-10 15376 Butte Lower part of the Cohasset road near the foot of the grade near Rock Creek. Comment
  CHSC106867  Lupinus bicolor var. tridentatus Lowell Ahart 2011-5-1 17340 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC93459  Lupinus bicolor var. tridentatus Lowell Ahart 2006-5-8 12595 Butte About 300 yards south of the three Gray Pines on the rim of Coal Canyon, about 2 miles northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 337 Comment
  RSA126009  Lupinus grayi E. K. Balls 1957-5-22 22516 Butte Tobins N fork Feather river, Hwy 40 640 Comment
  SEINET10452694  Lupinus latifolius subsp. longipes Mary Susan Taylor 1982-6-24 Taylor 4738 Butte T23N R5E center sec 30. Pulga SW quad. E side of Flea Mt ridge, ca. 1 mi se of Flea Mt, 1.7 mi se of Ponderosa Way, 8.9 mi n of Jarbo Gap on Hwy 70. Comment
  CHSC90294  Lupinus latifolius var. columbianus L. P. Janeway 1994-7-19 4698 Butte Northern High Sierra Nevada. South side of Cascade Creek 0.4 mi east of confluence with South Branch Middle Fork Feather River. 1179 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
  CDA13344  Lupinus nanus G. F. Hrusa, T. D. Wilfred 1996-7-9 13192 Butte Sierra Nevada; along Hwy 162. Near entrance to Rogers Cow Camp. Comment
  UCD108994  Lupinus nanus A. A. Heller 1914-5-8 11378 Butte Clear Creek-Paradise grade. Comment
  UCD109262  Lupinus nanus M. I. Wibawa 1996-4-14 8 Butte North Table Mountain, 100 m. W of Cherokee Rd., N of Oroville. 500 Comment
  CHSC38512  Lupinus pachylobus Vernon Oswald 1983-3-13 166 Butte Upper Bidwell Park, Chico, ca. 100 ft s of Upper Park Rd. and 800 ft e of Parking Area N at Salmon Hole. 176 Comment
  UC75250  Lupinus pachylobus Copeland 1903-4-10 3043 Butte Chico Comment
  POM253157  Lupinus pachylobus A. A. Heller 1938-4-7 15038 Butte Salmon Hole, east of Chico. Comment
  SEINET10450738  Lupinus pachylobus A. Arthur Heller 1938-4-17 Heller 15038 Butte Grassy places in thin clay soil on the bluff above the salmon hole e of chico. This low straggling form is the only one found in this region. The banner Turns purplish with age. Comment
  CHSC38514  Lupinus polycarpus Vernon Oswald 1983-3-23 202 Butte Upper Bidwell Park, Chico, 50 ft e of the Omnicron Enclosure (near the n park boundary ca. 1000 ft e of the jct. of Wildwood Ave. and Upper Park Rd.). 86 Comment
  UCD109586  Lupinus stiversii M. S. Taylor 1980-5-27 2715 Butte S side of Bald Rock Rd., ca. 1 mi e of Lake Madrone. 670 Comment
  UC726320  Lupinus stiversii A. A. Heller 1923-4-15 13740 Butte near De Sabla; near De Sabla Comment
  SEINET10452167  Lupinus vallicola Mary Susan Taylor 1981-5-5 Taylor 3601 Butte T20N R6E se/nw sec 31. Forbestown quad. E side of Lumpkin-LaPorte Rd, 1 mi N of Enterprise Bridge over South Fork of the Feather River, ca. 10 air mi E of Oroville. Oepn grassy area surrounded by Woodland; 1500 ft. 457 Comment
  UC1594536  Luzula cascadensis Lowell Ahart 1992-7-29 6895 Butte In a small meadow, north of a small stream, at the end of a logging road, about 1/2 (air) mile north of Philbrook Road, about 1 (air) mile northwest of Philbrook Reservoir 1676 Comment
  CAS-BOT-BC436564  Luzula cascadensis H. F. Copeland 1920-8-29 145 Butte Jonesville meadow 1219 Comment
  UCD142127  Luzula comosa M. Vincent 1964-4-8 506 Butte PG and E Power Plant. Feather River Canyon. 2 miles northeast of new bridge. Comment
  CHSC113381  Luzula comosa var. laxa Lowell Ahart 2014-7-2 19540 Butte On the south side of the County Road, about one mile west of the intersection of County Road and Lumpkin Road, about 7 miles northeast of Feather Falls. 1260 Comment
  RSA755036  Luzula comosa var. subsessilis L. Ahart 2009-4-26 15621 Butte About 150 yards SW of Ten Mile House Road, Upper Bidwell Park, about 1/2 air miles SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 287 Comment
  CHSC44171  Luzula divaricata V. Oswald; L. Ahart 1988-7-26 3629 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. Along the north brow of a ridge running eastwards from Snow Mt. 2072 Comment
  UC600807  Luzula divaricata E. B. Copeland 1930-7-12 Butte Jonesville , highest Butte Creek Region (highest Butte Creek Region) Comment
  CHSC35002  Lychnis coronaria R. A. Schlising; J. D. Jokerst 1980-7-2 3817 Butte E of Forest Ranch, 0.2 miles SW of crossing of Butte Creek. Roadside. 640 Comment
  CHSC43263  Lycopersicon esculentum Lowell Ahart 1987-9-24 5904 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
  JEPS94688  Lycopus americanus Lowell Ahart 1998-7-18 8042 Butte about 7 air mi n of Oroville (sw of the ione oak tree, w of the cow chute on the w side of Cherokee Road); North Table Mountain, Cherokee Road 403 Comment
  CHSC30953  Lythrum hyssopifolia L. Ahart 1980-7-4 2456 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  SEINET10452841  Lythrum hyssopifolia Mary Susan Taylor 1977-10-10 Taylor 1519 Butte Ca. 4-5 mi S of junction of Chico-Butte Hwy and Ord Ferry Road, ca. 20 mi S of Chico, on both sides of Chico-Butte Hwy; dried up Freshwater Marsh, and slough area. 30 Comment
  UCD143100  Lythrum salicaria Barry Rice 2004-8-24 BR 040802 Butte Along east side of a Hwy 99, on the banks of a diversion from Thermalito afterbay. Comment
  UCD102941  Lythrum salicaria Carl M. Wick 1975-8-15 s.n. Butte Oroville. Comment
  CAS-BOT-BC342653  Madia citriodora Bruce G. Baldwin; Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, south side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342654  Madia citriodora Bruce G. Baldwin; Vern Oswald 1988-6-16 715 Butte Upper Bidwell Park, south side of Big Chico Creek, just above police pistol range 91 Comment
  CAS-BOT-BC342704  Madia elegans A. A. Heller 1914-8-13 11684 Butte Hills 8 miles north of Oroville Comment
  UC179655  Madia elegans A. A. Heller 1914-8-13 11684 Butte hills 8 mi n of Oroville Comment
  CAS-BOT-BC342715  Madia elegans David D. Keck; J. Clausen 1935-6-25 3777 Butte 1.5 mi. S. of Flea Valley (ca. 3 mi. S. of Rag Dump) 975 Comment
  CHSC109772  Madia elegans subsp. densifolia Lowell Ahart 2012-10-28 18535 Butte On the north side of the paved park road, west of Table 27, north of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  CHSC84146  Madia elegans subsp. elegans Lowell Ahart 2003-6-30 10321 Butte North of the small stream, on the east side of Ponderosa Way, about 2 1/2 miles (by road) southwest of the Ponderosa Dam, about 2 miles (air) northwest of Forbestown. 578 Comment
  POM56168  Madia elegans subsp. vernalis A. A. Heller, H. E. Brown 1902-5-10 5518 Butte Berry Canyon (Near Clear Creek). Comment
  CAS-BOT-BC344320  Madia exigua Lowell Ahart 1980-5-17 2307 Butte 1/2 mile south-east of Hurleton 600 Comment
  SEINET10871971  Madia exigua Lowell Ahart 1985-5-15 Ahart 4986 Butte East of the dirt road, about 1 1/2 miles north-east of Concow Reservoir. north-east of Oroville. Comment
  UC478460  Madia gracilis E. B. Copeland 1931-8-14 697 Butte Jonesville 1500 Comment
  CAS-BOT-BC342953  Madia gracilis H. M. Hall 1914-7-29 9800 Butte Butte Creek Comment
  CAS-BOT-BC342954  Madia gracilis C. R. Quick 1945-7-17 45 -56 Butte Big Bar Mt. Plumas N. F. Comment
  SEINET10474817  Madia gracilis Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4232 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  SEINET10474828  Madia rammii Mary Susan Taylor 1980-5-27 Taylor 2672 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
  CAS-BOT-BC345232  Madia subspicata Lowell Ahart 1978-10-29 s.n. Butte Sutter Buttes Area. About 4 miles northeast of Bangor along La Porte Road 50 Comment
  CHSC44658  Maianthemum racemosum L. P. Janeway 1988-6-14 2788 Butte E side of cyn of Cedar Cr, 4.3 mi E of Lomo along the 'Cedar Loop'. 1280 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-BC510730  Maianthemum racemosum subsp. amplexicaule H. F. Copeland 1916-11-29 1236 Butte Woods near Butte Creek. 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
  CHSC31644  Marah fabacea var. agrestis L. Ahart 1974-2-25 305 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC3643  Marah fabacea var. agrestis Alice L. Stoll 1966-2-26 25 Butte About 80' N. E. Of Manzanita Ave. on Centennial Ave., Chico. Comment
  CHSC29019  Marah watsonii M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-4 2437 Butte Jct of Rocky Honcut Creek and Swedes Flat Rd, ca. 2 mi e of Oroville-Bangor Hwy, ca. 10 mi e of Oroville. 365 Comment
  CHSC32667  Marah watsonii M. S. Taylor 1981-3-24 3443 Butte S side of Hwy 70, just e of Heinz Creek, ca. 1.5 mi e of Pulga. 487 Comment
  SEINET10448100  Marah watsonii Mary Susan Taylor 1973-1 Taylor 21 Butte Along Humbug Road, ESE of Chico; Yellow Pine Forest. Comment
  CHSC36288  Marrubium vulgare M. S. Taylor 1982-5-22 4506 Butte Graylodge Waterfowl Refuge, near lot 6, on Rutherford Rd, ca. 1/2 mi e of Pennington Rd, ca. 12 mi sw of Gridley. 21 Comment
  SEINET10530352  Marsilea vestita Mary Susan Taylor 1980-6-29 Taylor 2989 Butte T23N R1E nw sec 20 Richardson Spring quad; ca. 1 mi E of Meridian Rd, ca. 4 mi N of Chico; Valley Grassland. 70 Comment
  CHSC106886  Matricaria discoidea Lowell Ahart 2011-5-1 17334 Butte North side of the intersection of Georgia Pacific Way and Feather River Blvd, about 100 yards east of Highway 70, about 1 mile south of Oroville. 42 Comment
  CHSC389  Matricaria discoidea B. Richardson 1929-4-16 Butte CSC Campus. 54 Comment
  CHSC46313  Matricaria occidentalis Vernon Oswald 1989-6-6 3799 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch). Waste area just n of the lighted parking area on the main ranch road n of Butte Creek-Little Dry Creek. 18 Comment
  CHSC38515  Medicago arabica Vernon Oswald 1983-5-2 419 Butte Upper Bidwell Park, Chico, beside the dirt road which leads to the Police Pistol Range on the s edge of the Golf Course. 91 Comment
  SEINET12155166  Medicago hispida P. L. Ricker 1912-1 3935 Butte Chico Comment
  SEINET12155169  Medicago hispida P. L. Ricker 1912-1 3953 Butte Chico Comment
  JEPS114175  Medicago minima 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 & Ride area. Comment
  CHSC31800  Medicago polymorpha L. Ahart 1976-5-2 1090 Butte Peter Ahart Ranch, Honcut. On grassy bank of North Honcut Creek. 45 Comment
  UCD107845  Medicago polymorpha P. B. Kennedy 1914-5-8 s.n. Butte Chico. Comment
  SEINET10871260  Medicago polymorpha var. brevispina Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4858 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CAS-BOT-BC269380  Melica californica A. A. Heller 1918-5-5 13012 Butte Near Magalia Comment
  UCD23593  Melica californica John Thomas Howell 1971-6-16 37540 Butte Magalia. 731 Comment
  CAS-BOT-BC282050  Melica fugax H. F. Copeland 1929-6-12 1210 Butte Near N Willow Creek 1524 Comment
  CAS-BOT-BC281304  Melica harfordii M. S. Taylor 1978-7-21 1807 Butte On N side of Oroville - Quincy Highway , ca 9 miles N of Lake Madrone 914 Comment
  CHSC107923  Melica harfordii L. P. Janeway 2011-7-21 10519 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cut-banks. 1067 Comment
  SEINET10901843  Melica harfordii Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4231 Butte T21N R6E ne sec 2. Ca. 1/4 mi w of Milsap Bar, ca. 25 mi ne of Oroville. Yellow Pine Forest; 500 m. 500 Comment
  CDA15366  Melica subulata G. F. Hrusa 1997-5-29 13799 Butte Sierra Nevada; Slopes on N side of Sucker Run Creek, ~1.5 mi. SSE of Feather Falls townsite. Uncommon in this form, but the species relatively common here in dry shaded areas. Low area near creek. Comment
  CHSC68917  Melica subulata Lowell Ahart 1997-7-11 7753 Butte Along a stream, north side 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 2 miles (air) northeast of Stirling City. 1219 Comment
  JEPS94567  Melica subulata Lowell Ahart 1997-7-11 7753 Butte se Cold Creek (along small stream from springs, n of dirt road, about 2 air mi sw of Bald Mt., about 9 mi by road e (or about 2 air mi ne) of Stirling City) 1219 Comment
  UC398888  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville Comment
  UCD88614  Melica subulata August L. Hormay 1929-7-7 s.n. Butte Butte Creek, 4 miles below Butte Mtn. Ranger Station. Comment
  CHSC3161  Melilotus albus Dona Kingsford 1966-4-30 Butte 9 miles SW of Hooker Oak Tree in Bidwell Park at Salmon Hole. Comment
  JEPS119916  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte On the south side of Big Chico Creek, about 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC32109  Mentha pulegium L. Ahart 1969-8-12 31 Butte Near Honcut. 45 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
  CHSC759  Mentha spicata E. Walker 1932-7-20 Butte Durham. 57 Comment
  RSA4124  Mertensia ciliata var. stomatechoides E. B. Copeland 1930-6-23 450 Butte Jonesville. 1500 Comment
  CHSC42718  Micranthes aprica Lowell Ahart; Vern Oswald 1987-6-10 5747 Butte Around a small drying meadow, at Sunflower Flat, about 2 1/2 miles east of Snow Mountain, about 5 miles north-east of Philbrook Reservoir. 1981 Comment
  CHSC30372  Micranthes integrifolia J. D. Jokerst 1979-3-5 1138 Butte Top of North Table Mt., 300 m NW of the intersection of Cherokee Rd and the E edge of section 17. Comment
  CHSC87439  Micranthes integrifolia R. D. Fischer 2004-3-31 103 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Collected at junction of Guardian Trail and Pine Trail near seasonal drainage. 396 Comment
  CAS-BOT-BC429199  Micranthes oregana E. B. Copeland 1929-7-20 369 Butte Jonesville 1550 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
  UCD134508  Micropus californicus E. H. Stanford 1940-4-14 s.n. Butte Morrison Ravine at Cherokee. Comment
  CHSC101287  Micropus californicus var. californicus Lowell Ahart 2009-4-17 15554 Butte On the south slope of a ridge, about 300 yards west of Highway 32, near the south boundary, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 351 Comment
  CHSC14005  Micropus californicus var. californicus D. Farrell 1974-4-30 15 Butte Collected ca. 5 mi ne of Oroville on top of Table Mountain. 388 Comment
  HSC23411  Micropus californicus var. californicus Carolyn Fante 1971-4-18 2 Butte N side of Pentz Rd. 76 Comment
  CHSC20384  Mimetanthe pilosa L. M. Mayer 1975-6-21 400 Butte Growing beside the Sacramento River below Ord Ferry Bridge. Comment
  CHSC31873  Mimetanthe pilosa L. Ahart 1975-6-23 807 Butte Peter Ahart Ranch. Along North Honcut Creek. Honcut. 45 Comment
  CHSC75973  Mimetanthe pilosa Lowell Ahart; Vernon Oswald 1999-8-13 8133 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
  LA209139  Mimulus aurantiacus G. P. Van Eselline; 1918-5-5 1722 Butte Near Nineshew Comment
  JEPS4727  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  JEPS121953  Mimulus breweri Lowell Ahart 2014-7-7 19590 Butte About 1/2 mile (air) north of Philbrook Reservoir. Comment
  UC1609082  Mimulus breweri Lowell Ahart 1993-6-20 6982 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  SEINET10570115  Mimulus discolor Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4161 Butte T20N R6E se sec 6. Along Bean Creek Rd, ca. 4.5 mi s of Little Bald Rock, ca. 17.5 mi ne of Oroville. Foothill Woodland; 600 m. 600 Comment
  UC885740  Mimulus douglasii A. A. Heller 1938-3-13 15000 Butte e Chico (Ten Mile House) Comment
  HSC86825  Mimulus glaucescens Robert A. Schlising 1963-5-4 2564 Butte S of Cohasset, 5.2 mi. N of Jct. Cohasset Hwy. and Kiefer Rd., along Cohasset Hwy. Comment
  RSA309183  Mimulus glaucescens Robert F. Hoover 1936-5-21 1158 Butte 3 miles north of Chico Comment
  UC103740  Mimulus glaucescens Mrs. R. M. Austin 1890-1 159 Butte Little Chico Canyon Comment
  CHSC118862  Mimulus guttatus Christopher T. Ivey 2017-5-27 388 Butte Honeyrun Road, about 3 km NE of bridge crossing Butte Creek, wet meadow E side of road. 163 Comment
  CHSC118883  Mimulus guttatus Christopher T. Ivey 2017-5-27 387 Butte Centerville Road, about 1.5 km NE of Honeyrun bridge, large wet meadow N side of road, growing among Typha latifolia, Rubus cf. armeniacus. 119 Comment
  RSA80134  Mimulus guttatus F. W. Peirson 1926-6-21 6775 Butte Butte Meadow, Humboldt Road. Comment
  CDA41713  Mimulus kelloggii L. Ahart 1998-6-3 7971 Butte About 1/4 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  JEPS17584  Mimulus layneae Rimo Bacigalupi with G. Thomas Robbins 1955-7-18 5364 Butte 0.3 mi below and w Lomo Inn (at junction of Humboldt Road to Butte Meadows, along State Highway No. 32) 1036 Comment
  JEPS87142  Mimulus leptaleus Lowell Ahart 1992-7-29 6870 Butte about 1/2 mi nw Lotts Lake (about 1 mi e of the Carr Mine) 1828 Comment
  RSA4111  Mimulus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  SEINET10570284  Mimulus torreyi Mary Susan Taylor 1981-4-27 Taylor 3555 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
  UC103708  Mimulus torreyi D. Cleveland 1882-7-14 Butte Sutton House Comment
  RSA535804  Mimulus tricolor David M. Thompson, L. Ahart 1988-3-22 849 Butte N of Honcut. Peter Ahart Ranch (entrance 1.2 mi N of Honcut store along Ahart Road.) 1 mi E of ranch gate, then 0.5 mi N. 35 Comment
  CHSC207  Minuartia cismontana S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  CHSC116646  Moenchia erecta subsp. erecta Lowell Ahart 2016-4-11 20741 A Butte Peter Ahart Ranch, about 1-1/2 mile north and one mile east of Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CDA34283  Mollugo verticillata L. Ahart 2009-8-13 16274 Butte Chico: about 100 yards east of the diversion structure that controls Mud Creek diversion and Lindo Channel, northeast of Hooker Oak, Upper Bidwell Park. Comment
  RSA621750  Monardella douglasii subsp. venosa B. Castro 1996-5-18 659 Butte 5.5 airmiles SE of the town of Paradise, in bottom of unnamed canyon just S of Neal Road, 60 ft N of creek channel directly under transmission lines. 85 Comment
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Jul 19 2018
  UC104634  Monardella douglasii subsp. venosa C. C. Parry May 1882 Butte Chico Valley Comment
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Jul 19 2018
  CHSC94485  Monardella odoratissima subsp. glauca Lowell Ahart 2006-7-16 12960 Butte Near the open mudflow area, on the north side of Humboldt Road, about 1 1/2 miles (air) southwest of Butte Meadows. 1435 Comment
  CAS-BOT-BC220455  Monardella sheltonii Clarence R. Quick 1952-7-1 52 -129 Butte Mill Creek Road between Feather River Highway and Coyote Gap Comment
  CHSC43847  Monardella sheltonii B. Castro 1987-5-18 91 Butte Approx. 9 mi e of Chico and ca 1/2 mi e of Hwy 32 via Altatina Dr. 457 Comment
  CAS-BOT-BC220310  Monardella venosa C. C. Parry 1883-1-1 s.n. Butte Chico Comment
  CDA2665  Monochoria vaginalis T. C. Fuller 1959-10-2 3140 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  UCD150372  Monochoria vaginalis William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  RSA125169  Monolopia major Hartweg 1847-4-13 1789 Butte Sacramento [probably Sacramento Valley, ca. 55 miles north of Yuba City, near Oroville] Comment
  JEPS106292  Montia fontana Lowell Ahart 2004-3-1 10700 Butte near low rocks, large rocks to the south, about 1 mi NE of Honcut Cemetary, about 4 air mi NE of Honcut, about 12 air mi SE of Oroville 62 Comment
  CHSC100972  Montia fontana subsp. amporitana L. P. Janeway 2008-3-18 9237 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.4 km northeast of Bruce Road. 126 Comment
  JEPS116040  Montia fontana subsp. amporitana Lowell Ahart, John Dittes 2009-3-20 15513 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 Chic 407 Comment
  CHSC57197  Montia parvifolia L. P. Janeway 1988-5-14 2767 Butte Steep bank along West Branch Butte Creek at crossing of road 1.9 mi west from Hwy 32 towards Ewalt Camp. 922 Comment
  UCD101762  Montia parvifolia Brian Bagley 1981-5-17 26 Butte 2.5 miles south of Arch Tunnel on Hwy 70. Cresta Powerhouse Substation. 463 Comment
  CHSC20539  Morus alba Pamela Caldwell 1972-3-18 Butte Back parking lot of A. J. H. Bldg. CSUC campus. Comment
  SEINET10605684  Muhlenbergia andina Lowell Ahart 1987-6-9 Ahart 5740 Butte On dry sand, around rocks, on the west side of the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC112710  Muhlenbergia filiformis Lowell Ahart 2013-10-26 19223 Butte On the bottom and sides of a small dry drainage on the bottom of Snag Lake, Snag Lake is completely dried up, about 4 miles (air) north of Philbrook Reservoir. 1708 Comment
  CHSC47698  Muhlenbergia filiformis Lowell Ahart 1989-9-21 6395 Butte Along the south edge of the gravel road, south of French Creek, about 1 mile west of the Sly Creek Reservoir. 1158 Comment
  UC398891  Muhlenbergia minutissima E. B. Copeland 1929-7-29 341 Butte above Jonesville (bank of pond) 1750 Comment
  UCD87063  Muhlenbergia rigens L. E. Hazeltine 1916-7-27 s.n. Butte Chico. Comment
  SEINET10508208  Muhlenbergia rigens Mary Susan Taylor 1979-10-13 Taylor 2253 Butte T22N R4E sw 1/4 sec 21. Riparian Woodland along creek crossing Jordan Hill Road (Ponderosa Way on some maps), ca. 0.8 mi N of its jct with Concow Road, ca. 5 mi E of Paradise. With J.D. Jokerst. 427 Comment
  CHSC32131  Myosurus minimus L. Ahart 1974-4-28 446 Butte In rice field, Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10965657  Myosurus minimus var. apus Lowell Ahart 1991-5-20 Ahart 6656 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  CHSC43251  Myriophyllum aquaticum Lowell Ahart 1987-10-22 5919 Butte In Madrone Lake, near the Oroville Quincy Highway. 609 Comment
  CHSC113377  Myriophyllum spicatum Lowell Ahart 2014-4-16 19372 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. 29 Comment
  CHSC31006  Najas guadalupensis M. S. Taylor 1978-7-21 1846 Butte Ca. 20 ft e of the Midway, ca. 7 mi s of Durham, in rice field. 30 Comment
  CHSC43142  Narthecium californicum R. Banchero; R. Schlising 1981-7-21 607 Butte 0.3 mi s of Bald Mt lookout tower, Bald Mt. 1688 Comment
  CHSC26718  Nassella pulchra M. Hayes 1978-4-10 147 Butte Off Oroville-Quincy Highway, approx. 2.7 mi n of Bidwell Bar Bridge. 300 Comment
  CHSC6666  Nassella pulchra Marilyn Lee 1968-4-19 132 Butte East side of Cherokee Road, ca 2 miles S. of Cherokee and 100 yards S.E. of cemetary, Table Mt. Comment
  CHSC100805  Navarretia capillaris R. A. Schlising; L. Janeway 1988-7-16 4604 Butte N part of county, S of Humbug Summit at upper reaches of Willow Creek; edge of meadow. 1950 Comment
  POM183145  Navarretia capillaris H. F. Copeland 1930-7-28 1308 Butte Neighborhood of Jonesville. 1829 Comment
  CHSC109216  Navarretia filicaulis B. Castro; L. P. Janeway 2004-7-13 1469 Butte Northern High Sierra Nevada. Along Old Forbestown Road 1.6 road mi SE of Forbestown Reservoir Road; 2.25 air mi E of Forbestown; near headwaters of Costa Creek; 0.15 rd mi NW of jcn with Abernathy Rd. 829 Comment
  CHSC45719  Navarretia filicaulis K. R. Stern 1979-6-29 Butte Parkhill, 1.5 mi S of Jarbo Gap; Jas. Moak property. 585 Comment
  CHSC45755  Navarretia filicaulis L. P. Janeway 1987-6-13 2195 Butte Saddle along Ponderosa Way (Rim Rd) 3.4 mi NE of Jarbo Gap. 841 Comment
  JEPS100229  Navarretia filicaulis Dean W. Taylor 2002-7-3 18217 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) 1005 Comment
  UC101993  Navarretia filicaulis Mrs. C. C. Bruce Jun 1887 1137 Butte Forest Ranch 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
  CHSC66960  Navarretia heterandra James D. Jokerst 1992-5-19 3362 Butte Cascade Range Foothills. Stone Ridge Ranch Development Site E of Cohasset Rd. at Chico Municipal. At powerlines on S side of Sheep Hollow. 97 Comment
  UC221749  Navarretia intertexta Dr. Edward Palmer Jun 7 1892-Jun 12 1892 2080 Butte near Chico Comment
  CHSC82415  Navarretia intertexta subsp. intertexta Lowell Ahart 2002-5-7 9627 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
  UCD106118  Navarretia intertexta subsp. propinqua L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  SEINET10496828  Navarretia leucocephala Mary Susan Taylor 1986-5-6 Taylor 5623 Butte Butte County; Along Cana-Pine Creek Road, Wurlitzer Ranch area, ca. 7 mi N of Chico. Open sun in Valley Grass- land. With Vern Oswald and Lowell Ahart. 200 ft. 61 Comment
  CHSC59119  Navarretia pubescens L. P. Janeway; B. Castro 1992-5-9 4166 Butte Unnamed canyon on southeast side of Neal Road opposite the Butte County Land Fill; ca 1 1/4 mi northeast of Hwy 99. 79 Comment
  CHSC33128  Navarretia subuligera J. D. Jokerst 1981-5-11 1310 A Butte Top of Doe Mill Ridge. 457 Comment
  CHSC75393  Navarretia tagetina Jennifer Slater 1997-4-27 33 Butte Upland area at the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  SEINET3860241  Navarretia tagetina Leigh A. Johnson 2004-5-15 04 -064 Butte Eastbound from Chico on Skyway Drive, in 10 meters between large pullover area and fence, 4.2 miles west of Skyway crossroad; 5.3 miles west of Neal jct.; 0 209 Comment
  CHSC39042  Navarretia viscidula subsp. purpurea R. A. Schlising 1983-8-6 4431 Butte NE of Oroville Dam. Along Highway 162. 320 Comment
  POM65257  Nemophila heterophylla A. A. Heller, H. E. Brown 1902-5-9 11606 Butte Berry Canyon (Near Clear Creek). Comment
  RSA75804  Nemophila heterophylla Lincoln Constance, J. L. Morrison 1938-4-30 2177 Butte Between Big and Little Chico creeks, 8 miles north of Chicho, Sierra Nevada foothills. 610 Comment
  CHSC24718  Nemophila pedunculata C. E. Stopher 1976-4-3 16 Butte 9.7 km se of Chico via Honey Run road. 100 m sw of covered bridge on s side of canyon. 122 Comment
  JEPS117154  Nemophila pedunculata Lowell Ahart 2010-4-30 16588 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
  SBBG29928  Nemophila spatulata E. B. Copeland 1930-6-28 Butte Jonesville 1650 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
  CHSC69725  Nicotiana acuminata var. multiflora Lowell Ahart 1997-10-24 7933 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile wewst of the Ponderosa Dam. 289 Comment
  CHSC65691  Nicotiana glauca Vernon H. Oswald 1996-3-29 7276 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. On the riprapped bank of the Sacramento River at the N end of Riparian Sanctuary. 30 Comment
  JEPS117257  Nicotiana quadrivalvis Lowell Ahart 2010-9-24 17234 Butte Near the southwest edge of the Golf Course, about 10 yards south of the footbridge, along trail from the end of Centennial Avenue to the footbridge across Big Chico Creek, Bidwell Park 91 Comment
  RSA0060137  Nicotiana quadrivalvis L. Ahart 2010-9-24 17234 Butte Near the SW edge of the Golf Course, along trail form the end of Centennial Ave. to the foot bridge across Big Chico Creek, Bidwell Park. 91 Comment
  CHSC26644  Nymphaea odorata M. S. Taylor 1977-9-10 1517 Butte Ca. 4 mi s of jct of Chico-Butte Hwy and Ord Ferry Rd, ca. 20 mi s of Chico. 30 Comment
  CDA3524  Nymphaea odorata T. C. Fuller 1969-8-19 18816 Butte North side of Nelson West Road just east of Chico-Butte City Road, Dodge Land. 0 Comment
  CHSC115294  Odontostomum hartwegii Lowell Ahart 2015-4-27 20087 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
  SEINET8501843  Odontostomum hartwegii C. Witham, J. Buck 2001-5-3 182 Butte Book Family Farm, off of Hwy 99, 2 miles N of its intersection with Hwy 149, Book Ranch Site, pool # BOO072. Comment
  UC844103  Odontostomum hartwegii Lewis S. Rose 1937-6-10 37362 Butte Hurleton 579 Comment
  CHSC38559  Olea europaea Vernon Oswald 1983-5-27 569 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf Course and the power lines. 121 Comment
  UC1586570  Ophioglossum californicum Lowell Ahart 1991-3-11 6642 Butte ca. 2 1/2 mi n and 3 3/4 mi e Honcut (ca. 12 mi se of Oroville, Joie Osgood Ranch) 91 Comment
  CDA42032  Orobanche uniflora subsp. occidentalis H. K. Wagnon 1957-4-28 712 Butte About five miles north of Oroville on road to Cherokee. 0 Comment
  SEINET10549648  Orthocarpus attenuatus Mary Susan Taylor 1975-4-11 Taylor 455 Butte Ca. 1/4 mi E of Salmon Hole, between Chico Creek and Upper Bidwell Park Rd, Upper Bidwell Park, Chico. Associates: Quercus spp., Pinus sabiniana, Galium aparine, Brodiaea hyacinthina. Foothill Woodland. 183 Comment
  RSA34067  Orthocarpus campestris A. A. Heller 1939-5-13 15078 Butte On US Highway 99E near the 'Y' east of Richvale. Topotype. Comment
  CAS-BOT-BC6995  Orthocarpus lacerus Amos Arthur Heller; H. E. Brown 1902-5-6 5459 Butte Berry Canyon (Near Clear Creek) Comment
  CAS-BOT-BC254366  Oryza sativa Mrs. Donahue 1921-9-1 s.n. Butte Donahue Ranch near Chico Comment
  CHSC30703  Osmorhiza chilensis M. S. Taylor 1980-5-27 2650 Butte Near parking lot, Big Bald Rock, ca. 3 mi e of Lake Madrone. 975 Comment
  CHSC58871  Osmorhiza chilensis Lowell Ahart 1992-7-29 6888 Butte About 1 mile north-east of the Carr Mine, about 3/4 mile north-west of Lotts Lake. 1798 Comment
  CHSC89744  Osmorhiza occidentalis L. P. Janeway; Robert F. C. Naczi 2004-7-23 8181 Butte High Cascade Range. Forested slope about 0.3 km southeast of the east end of Philbrook Reservoir. Northwest-facing slope. 1707 Comment
  JEPS115575  Oxalis corniculata Lowell Ahart 2009-6-12 15841 Butte 10 yards north of the Bear's Lair Picnic Area and Coastal Redwood Grove sign, about 80 yards east of Cedar Grove, Lower Bidwell Park, Chico 67 Comment
  CHSC41310  Oxypolis occidentalis S. C. Morey 1983-7-22 546 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC42644  Oxypolis occidentalis Vernon Oswald 1983-8-4 950 Butte Chico Meadows, ca. 1 mi n of Butte Meadows. 1292 Comment
  CAS-BOT-BC316897  Packera eurycephala var. lewisrosei John Thomas Howell 1962-6-16 37616 Butte Nelson Bar 213 Comment
  CAS-BOT-BC317161  Packera subnuda var. subnuda E. B. Copeland 1930-6-27 s.n. Butte Jonesville 1550 Comment
  UC596487  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  CHSC41981  Panicum dichotomiflorum Lowell Ahart 1986-11-14 5462 Butte On the bottom of a pond, about 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miles south-west of Oroville. 36 Comment
  RSA718155  Panicum dichotomiflorum L. Ahart 2006-10-13 13505 Butte Peter Ahart Ranch, about 1.5 miles north and 1 1/8 miles east of Honcut, about 12 miles southeast of Oroville 34 Comment
  RSA716561  Parentucellia viscosa L. P. Janeway, Matt Brown, Samantha Hillaire, Jamie 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
  UCD77900  Parentucellia viscosa Robert E. Preston 2003-5-11 2131 Butte ca. 2.25 mi W of Pentz, along Pentz Rd, ca. 0.5 mi E of Clark Rd. 97 Comment
  JEPS105887  Parvisedum pumilum Lowell Ahart 2004-2-7 10699 Butte near low rocks, large rocks to the south, about 1 mi NE of the Honcut cemetary, about 4 air mi NE of Honcut, about 12 air mi SE of Oroville 71 Comment
  SEINET7067155  Parvisedum pumilum 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
  CHSC37107  Paspalum dilatatum L. Ahart 1982-10-15 3895 Butte Along edges of North Honcut Creek, ca. 2.7 mi ne of Honcut. 50 Comment
  UC618996  Paspalum dilatatum H. S. Yates 1936-8-19 6128 Butte 2 mi sse Nelson; Chico Quad. Comment
  UCD88740  Paspalum dilatatum J. Jones 1923-9-15 s.n. Butte Biggs Rice Station. Comment
  SEINET10453508  Paxistima myrsinites Mary Susan Taylor 1981-5-11 Taylor 3689 Butte T22N R6E sw/sw sec 19, Pulga SE quad. Jct of French Creek and 22N93, ca. 3.5 mi S of Coyote Gap, ca. 17 air mi NE of Oroville. 2800 ft. 853 Comment
  JEPS119983  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. Comment
  UC600441  Pedicularis attollens H. F. Copeland 1930-7-24 1329 Butte Jonesville 1524 Comment
  POM44028  Pedicularis aurantiaca C. C. Bruce 1898-05 2419 Butte Paradise. Comment
  CDA41862  Pedicularis racemosa L. Ahart 2003-8-26 10543 Butte On the west side of the dirt road, west of where Pinkard Creek flows into the Lost Creek Reservoir, about 3/8 mile north of the Lost Creek Reservoir Dam, 1 1/8 (air) southwest of the Sly Creek Reservoir Dam. Comment
  HSC66079  Pellaea andromedifolia M. S. Taylor 1980-3-30 2411 Butte Salmon hole, upper Bidwell Park, Chico 244 Comment
  CHSC31534  Pellaea mucronata L. Ahart 1976-4-7 1037 Butte Around rocks along edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC33896  Pellaea mucronata M. S. Taylor 1981-5-15 3733 Butte N side of Feather River Hwy 70, at Plumas NF boundary, ca. 2 mi ne of Jarbo Gap. 609 Comment
  CHSC101337  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
  CHSC60942  Pellaea mucronata var. mucronata Lowell Ahart 1993-7-6 7063 Butte Jackass Flat, Mooreville Ridge, about 1 air mile north-west of the Lost Creek Reservoir Dam. 1158 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
  CHSC27977  Penstemon deustus var. suffrutescens M. S. Taylor 1978-7-18 1710 Butte On e side of Humboldt Peak at Humboldt Summit. 2133 Comment
  NY601757  Penstemon heterophyllus var. purdyi A. A. Heller 1902-5-7 5482 Butte Berry Canyon (Near Clear Creek) Comment
  CHSC37781  Penstemon laetus var. leptosepalus M. S. Taylor 1982-6-24 4729 Butte Around large landing on saddle of ridge se of Flea Mt, n of Pulga, ca. 5 air mi e of Magalia. 1097 Comment
  CHSC95079  Penstemon laetus var. leptosepalus L. P. Janeway 2006-6-25 8697 Butte Northern High Sierra Nevada. Along a major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing. 1006 Comment
  RSA34041  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte 25 miles from Oroville on Feather River Hwy. Comment
  CHSC92744  Penstemon neotericus L. P. Janeway; Barbara Castro, Shannon Nielsen 2005-6-20 8425 Butte Northern High Sierra Nevada. Plumas National Forest; near top of ridge on east side of Lockerman Creek 0.6 km east-northeast of its confluence with Camp Creek. 1085 Comment
  CAS-BOT-BC245680  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  RSA443117  Penstemon personatus L. Ahart, P. Ahart 1984-7-19 4761 Butte About 0.5 mile east of Bald Mountain, about 5 miles NE of Stirling City. 1900 Comment
  UC478468  Penstemon rydbergii var. oreocharis E. B. Copeland 1931-6-20 689 Butte Jonesville , Jonesville (by Butte Creek) 1500 Comment
  CHSC28896  Pentagramma triangularis M. S. Taylor 1980-3-1 2339 Butte On north facing bluffs looking into Nance Canyon, ca. 1/4 mi n of Neal Rd, ca. 3 mi e of its jct with Hwy 99, ca. 7 mi s of Chico. 121 Comment
  CHSC29011  Pentagramma triangularis M. S. Taylor 1980-3-8 2369 Butte Ca. 100 ft sw of Pulga bridge over Hwy 70, ca. 28 mi ne of Oroville. 487 Comment
  JEPS113228  Pentagramma triangularis Lowell Ahart 2007-5-22 13918 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
  CHSC29723  Pentagramma triangularis subsp. semipallida J. D. Jokerst 1980-4-17 587 Butte Top of North Table Mt, northern most edge. 472 Comment
  CHSC34243  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-4-28 3568 B Butte Along Four Trees Rd, ca. 1/2 mi e of Hwy 70, ca. 2 mi ne of Pulga. 701 Comment
  JEPS104598  Perideridia bacigalupii Lowell Ahart 2003-8-6 10474 Butte In the road gutter on the w side of Encina Grande Rd, ca 50 yd se of Truman Journey Way, ca 2 mi (air) se of of Bloomer Hill, ca 6 mi (air) ne of Oroville Dam. Along the road for the next 3 miles. 609 Comment
  CHSC94385  Perideridia kelloggii Lowell Ahart 2006-8-5 13087 Butte On the west side of a large wash, Peter Ahart Ranch, about 1 1/2 miles north and 100 yards east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC179601  Perideridia kelloggii A. A. Heller 1914-8-11 11678 Butte Cico-Hamilton road 6 mi from Chico Comment
  CHSC40231  Perideridia lemmonii Vernon Oswald 1985-7-15 1904 Butte Concow Meadow Located ca. 0.1 mi w of Concow Rd. at a point 1.4 mi n of Ponderosa Way or Rim Rd. 1097 Comment
  CDA38503  Perideridia parishii T. C. Fuller 1962-7-12 9194 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC40239  Perideridia parishii subsp. latifolia Vernon Oswald 1985-7-11 1897 a Butte Coon Hollow Rd. ca. 0.2 mi e of Humbug Rd at the W. Branch of the Feather R. 1615 Comment
  CHSC46202  Persicaria hydropiperoides L. P. Janeway 1986-9-20 1870 Butte Seasonally draining side creek on NW side of Little Chico Cr, near River Rd ca 2 mi S of Chico River Rd. 36 Comment
  CHSC66898  Persicaria hydropiperoides Vernon H. Oswald 1996-10-22 8302 Butte Northern Sacramento Valley. Oroville Wildlife Area on the NW side of the Feather River just upstream from the outlet of Thermalito Afterbay. 33 Comment
  CAS-BOT-BC419176  Persicaria maculosa A. A. Heller 1916-9-30 12663 Butte Hills 8 miles north of Oroville Comment
  CDA42947  Persicaria punctata L. Ahart 2012-10-28 18523 Butte On the south side of Big Chico Creek, about 50 yards east of Table 5, west of Cedar Grove, Lower Bidwell Park, Chico. Comment
  CHSC31381  Petrorhagia dubia J. D. Jokerst 1979-4-20 1209 Butte Top of North Table Mt., ca. .75 mi. NE of the junction of Cherokee Rd. and the E edge of the mountain. 396 Comment
  CHSC50050  Phacelia egena Lowell Ahart 1990-4-8 6438 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CHSC11969  Phacelia heterophylla subsp. virgata E. B. Copeland 1930-7-13 446 Butte Jonesville. 1550 Comment
  UC726923  Phacelia heterophylla subsp. virgata A. A. Heller 1938-5-28 15124 Butte along Feather River Hwy 25 mi from Oroville Comment
  UC600782  Phacelia mutabilis H. F. Copeland 1927-9-2 956 Butte Jonesville Comment
  POM73566  Phacelia purpusii C. C. Bruce 1898-05 2388 Butte Mountains. Comment
  POM219385  Phacelia racemosa H. F. Copeland 1931-6-9 1538 Butte Jonesville, near Jones Creek. 1524 Comment
  JEPS122160  Phalaris arundinacea Lowell Ahart 2014-8-13 19699 Butte On the southeast side of Humbug Summit Road, about 100 yards southwest of the Way Point, about 200 yards southwest of Memorial Spring, about a mile southwest of the intersection of Humbug Summit Road and Philbrook Road, about 2 1/2 miles (air) northwest of Philbrook Reservoir. Comment
  CAS-BOT-BC265955  Phalaris minor Lowell Ahart 1974-6-6 s.n. Butte Peter Ahart Ranch, Honcut Comment
  LA206689  Phalaris paradoxa Lewis S. Rose; 1937-6-11 37381 Butte 7 mi. W. of Honcut Comment
  CHSC37653  Philadelphus lewisii T. B. Devine 1981-8-25 755 Butte Beside Hwy 70 near Bear Creek Ranch, along N Fork of Feather River near Cresta. 426 Comment
  CHSC38676  Philadelphus lewisii Vernon Oswald 1983-5-27 562 Butte Upper Bidwell Park, Chico, along the South Rim Trail between the Golf course and the power lines. 121 Comment
  CHSC88088  Philadelphus lewisii R. D. Fischer 2004-4-17 173 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 next to 10 Mile House Road. 213 Comment
  CAS-BOT-BC250865  Phleum pratense M. S. Taylor 1978-7-18 1720 Butte On n side of Butte Creek, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground 1524 Comment
  UC600759  Phleum pratense H. F. Copeland 1932-7-22 Butte Jonesville Comment
  CAS-BOT-BC134917  Phoradendron bolleanum C. R. Quick 1948-1-28 48 -02 Butte Magalia 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
  JEPS122275  Phoradendron serotinum subsp. macrophyllum Lowell Ahart 2014-3-5 19321 Butte About 40 feet north on the northeast corner of Washington Street and Spruce Street, in Gridley. Comment
  RSA0118756  Phoradendron serotinum subsp. macrophyllum Lowell A. Ahart 2014-3-5 19321 Butte About 40 feet north of the northeast corner of Washington Street and Spruce Street, in Gridley. 24 Comment
  RSA262354  Phoradendron villosum Kathy Corson 1969-4-6 28 Butte Upper Park Road in Big Chico Canyon, 8 miles NE of Chico. 61 Comment
  RSA691014  Phoradendron villosum L. Ahart, John Dittes, Josephine Guardino, Steve Green 2003-5-27 10226 Butte On the rim above Big Chico Creek, along the Lahi Trail, about 200 yards east of Parking Area O, Upper Bidwell Park, about 4.5 miles east of Manzanita Avenue, Chico. 183 Comment
  JEPS117305  Photinia serrulata 2010-5-28 16745 Butte On the north side of the path, about 100 yards west of the Cedar Grove Parking Area in lower Bidwell Park, Chico 67 Comment
  CHSC49448  Phyla nodiflora var. nodiflora Vernon Oswald 1987-7-30 3172 Butte Rancho Arroyo Chico. Mouth of the slough leading into the boat ramp just upstream from the Washout (Chico Landing site) on the Sacramento River. 36 Comment
  CHSC4299  Phyllostachys bambusoides R. L. Smith 1966-5-25 Butte US Plant Introduction Station 5 mi sw of Chico. Comment
  CHSC1932  Physalis acutifolia V. Holt 1935-10-1 Butte Ord road. Ditch near alfalfa field. 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
  CHSC83053  Physalis lancifolia Lowell Ahart 2002-10-17 9996 Butte On the hills below the high water line of Lake Oroville, about 1 1/2 miles south of Highway 162 (Oroville Quincy Highway), about 3 miles (air) northeast of Oroville Dam. 227 Comment
  RSA592544  Physocarpus capitatus S. O. Mattoon 1970-6-12 16 Butte Ponderosa Way Forest Road at Mud Creek; 5 air miles ESE of Cohasset; southern Cascade Mountains. 671 Comment
  CHSC45343  Phytolacca americana Vernon Oswald 1983-7-6 804 Butte Beside Calif. Hwy. 32 in Forest Ranch. 719 Comment
  JEPS95155  Phytolacca americana Lowell Ahart 1997-7-31 7758 Butte Durham, Durham Elementary School Durham Elementary School; Durham, Durham Elementary School 57 Comment
  UCD98412  Phytolacca americana var. americana G. K. Helmkamp; E. A. Helmkamp 2007-10-7 13075 Butte Northern Sacramento Valley: Biggs East Hwy, 1.6 miles east of CA-99 at Biggs. 32 Comment
  UCSC009440  Picris echioides Lowell Ahart 1995-10-4 7677 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville 37 Comment
  CHSC39546  Pilularia americana Lowell Ahart 1983-6-6 4032 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut. 50 Comment
  CHSC42502  Pinus attenuata Lowell Ahart 1987-5-11 5611 Butte Along Lumpkin Road, about 1.5 miles north-east of Forbestown Road. 426 Comment
  CHSC3901  Pinus ponderosa R. Carter 1967-7-31 501 Butte Found ca. 17 mi. NE of Oroville on W side of Big Bald Rock and E side of Bald Rock Rd. where road turns off to campground. 1066 Comment
  CHSC109525  Pinus ponderosa var. pacifica L. P. Janeway 2012-6-23 10893 Butte Northern High Sierra Nevada. Southwestern spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23N06E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC3448  Pinus radiata Judy Potter 1966-3-23 Butte SE corner library Chico State College Chico. Comment
  SEINET10529825  Pityrogramma triangularis Mary Susan Taylor 1979-12-25 Taylor 2308 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC114949  Plagiobothrys Lowell Ahart 2015-3-10 19944 Butte 60 feet north of the fence, north of the parking area, north of Larkin Road, about 6 miles (air) southwest of Oroville. 44 Comment
  CHSC111340  Plagiobothrys austiniae Lowell Ahart 2012-5-2 17955 Butte 30 yards southeast of the fence, about 200 yards southwest to the fence, about 200 yards southwest to the Government Pole Line, about 100 yards northeast to the oak tree, Upper Bidwell Park, about 1 mile east of Chico. 105 Comment
  CHSC111351  Plagiobothrys austiniae Lowell Ahart 2012-5-4 17982 Butte On damp bare soil, on the bottom and sides of a small vernal pool, on the south rim of Beatson Hollow, about 1/2 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 351 Comment
  POM126228  Plagiobothrys bracteatus Francis Ramaley 1917-5-6 11215 Butte Near Chico Comment
  CHSC31253  Plagiobothrys canescens R. A. Schlising 1980-4-7 3559 Butte NE of Bangor, ca. 1.1 mi ne of junction Ord-Bangor Highway, on LaPorte Road. At roadside. Comment
  SEINET12320808  Plagiobothrys fulvus Unknown 1974-1 15 Butte adjacent to Fern Bank area, upper Bidwell Park Comment
  CHSC29052  Plagiobothrys fulvus var. campestris R. A. Schlising 1980-4-20 3572 Butte Between Singer Creek and Cana/Pine Creek Road. Comment
  CHSC46760  Plagiobothrys fulvus var. campestris Lowell Ahart 1977-5-2 1340 Butte In pasture fields, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC29980  Plagiobothrys glyptocarpus Lowell Ahart 1980-5-12 2248 Butte Peter Ahart Ranch, ca 1 mi N and 2.25 mi E of Honcut; in small wash in pasture. 50 Comment
  CHSC46777  Plagiobothrys glyptocarpus Lowell Ahart 1977-5-8 1363 Butte On the bottom of a small wash, Peter Ahart Ranch, about 2 miles north and 2 1/4 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC117346  Plagiobothrys glyptocarpus var. glyptocarpus B. Castro; L. P. Janeway 2014-4-4 2003 Butte Northern Sierra Nevada Foothills. On North Table Mountain, ca 5.5 air mi N of Oroville, 100 ft N of the main parking area just W of Cherokee Rd on the table top; ca 200 ft NE of the large lone oak tree by the parking lot. 406 Comment
  JEPS94146  Plagiobothrys glyptocarpus var. glyptocarpus Lowell Ahart 1998-6-9 8001 Butte ca. 7 mi. (air) n. Oroville (ca. 0.5 mi. n.w. of the lone oak tree, n.w. of the cow chute along Cherokee Rd., North Table Mt.); North Table Mt. 396 Comment
  CHSC46553  Plagiobothrys hispidulus V. Oswald; L. Ahart 1989-7-12 3852 Butte Meadow near the headwaters of Big Kimshew Creek, ca. 2 mi (air) sw of Lotts Lake, ca. 3 mi (air) se of Philbrook Reservoir. 1901 Comment
  CHSC167  Plagiobothrys nothofulvus Edna Canfield 1904-4-9 Butte Hooker Oak field 76 Comment
  UCD80166  Plagiobothrys nothofulvus CNPS SN Foothill Team 2005-4-6 SNFN 0099 a Butte CDFG North Table Mountain Wildlife Area, Table Mountain, Oroville. Stand on mesa NW of parking area, approximately 1 mile; 123 degrees east of south fork of Coal Canyon, extends to west and north of releve location. 383 Comment
  UC1562356  Plagiobothrys scouleri Lowell Ahart 1990-7-5 6550 c Butte just w Scout Road (on the n side of Humboldt Road); Butte Meadows 1325 Comment
  CHSC28983  Plagiobothrys scriptus R. A. Schlising 1980-3-23 3520 Butte E of Chico and SW of Paradise along Skyway. 289 Comment
  CHSC48000  Plagiobothrys scriptus Vernon Oswald 1984-3-9 1092 Butte In a track on the w side of Calif. Hwy 99E ca. 100 ft s of Broyles Rd. 59 Comment
  CHSC84126  Plagiobothrys shastensis Lowell Ahart 2003-5-9 10124 Butte North of the Larkin Road Boat Ramp, on the north side of the access road to the boat ramp at the Thermalito Afterbay, about 300 yards west of Larkin road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 38 Comment
  UC881347  Plagiobothrys stipitatus A. A. Heller 1914-4-27 11317 Butte 9 mi from Chico (along the Chico-Oroville road) Comment
  CHSC77981  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2000-5-13 8352 Butte In the mudhole of a poor dirt road, on the south side of the access road to the boat ramp at the Thermalito Afterbay, west of Larkin Road, about 1 1/4 miles south of the Oroville Airport, about 5 miles (air) southwest of Oroville. 42 Comment
  CHSC90645  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2005-4-2 11682 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
  JEPS127037  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-31 20904 Butte About 1/8 mile east of Palermo Honcut Highway, Peter Ahart Ranch, about 2 1/4 miles north and 1/8 mile east of Honcut, about 12 miles (air) south of Oroville. Comment
  SEINET10497556  Plagiobothrys tenellus Mary Susan Taylor, K. Tharp 1982-4-8 Taylor 4290 Butte T19N R4E border sac 1/2. Oroville quad. Along both side of Oroville Dam Blvd (Alt. 40), ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 800 ft. 244 Comment
  CAS-BOT-BC60825  Planodes virginica Lowell Ahart 1989-3-20 6192 Butte West of the intersection of Highway 70 and Lower Honcut Road, about 3 miles west of Honcut, about 13 miles S of Oroville 30 Comment
  CHSC47459  Plantago elongata Lowell Ahart 1974-4-24 426 Butte Growing on the bottom of small vernal pools, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC82233  Plantago elongata Lowell Ahart 2002-3-16 9417 Butte On the bottom and sides of a depression, on the north side of a poor dirt road, about 50 yards north of Highway 32, about 1/4 mile east of the intersection of Bruce Road and Highway 32, east of Chico. 73 Comment
  CHSC90481  Plantago elongata Lowell Ahart; Paul Maslin, John Dittes 2005-3-17 11663 Butte Big Chico Creek Ecological Reserve. Burned area, about 50 yards south of the fence, on the east side of the very poor dirt road, about 1/8 mile northwest of the Indian Cave, about 3/4 mile west of Big Chico Creek, about 4 1/2 miles (air) northeast of Chico. 481 Comment
  JEPS104322  Plantago elongata Lowell Ahart 2003-3-31 10027 Butte On the south side of the access road to the boat ramp at the Thermalito Afterbay, ca 300 yd w of Larkin Rd, ca 1 1/4 mi south of the Oroville Airport, ca 5 mi (air) sw of Oroville. 43 Comment
  CHSC39769  Plantago erecta D. McClain 1968-3-9 6 Butte Abundant on slopes below cliffs ca. 1000 yds. N. of road, ca. 2.2 miles from end of paved road in Upper Bidwell Park, Chico. 198 Comment
  JEPS119743  Plantago erecta Lowell Ahart 2012-3-23 17778 Butte About 100 yards south of the intersection of Guardian Trail and Ten Mile House Road, about 1/4 mile west of Highway 32, about 9 miles (air) northeast of Chico. Comment
  JEPS115884  Plantago major Lowell Ahart 2009-6-19 15920 Butte On damp soil, 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
  CHSC50438  Platanthera sparsiflora Vernon Oswald; Lowell Ahart 1990-6-20 4303 Butte Headwaters of Philbrook Creek, ca. 0.25 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1889 Comment
  UC600641  Platanthera sparsiflora H. F. Copeland 1931-6-9 Butte Jonesville 1524 Comment
  CHSC38587  Platanus racemosa Vernon Oswald 1983-7-13 867 Butte Upper Bidwell Park, Chico, at Five Mile Recreation Area. Growing near the creek in riparian woodland. 85 Comment
  SEINET12030016  Platanus racemosa M. S. Taylor, Oswald, V. 1984-1 5376 Butte along Humbug Rd, ca 0.5 mi E of Honey Run Covered Bridge, ca 6 air mi E of Chico 183 Comment
  POM225861  Platystemon californicus var. californicus J. H. Morrison 1932-4-3 s.n. Butte Durham. Comment
  CHSC32588  Plectritis ciliosa subsp. insignis J. D. Jokerst; Jeri Donovan 1981-3-21 1260 Butte Ca. 0.5 mi N of Horseshoe Lake (ca 3 mi E of Chico in Bidwell Park). Comment
  CHSC3955  Plectritis macrocera J. Senter 1967-3-21 28 Butte Located 150 yds. behind covered bridge on S.E. slope Honeyrun Rd. Chico. 76 Comment
  CAS-BOT-BC458151  Pleuricospora fimbriolata M. S. Taylor 1980-8-2 3210 Butte Humboldt Summit, ca. 100 ft. W of Old Humboldt Rd. 2011 Comment
  HSC72943  Pleuricospora fimbriolata M. S. Taylor 1981-4-27 3560 Butte Ridge between FS 21N33 and 21N80, Galen Ridge, 1 mi. SW of Bald Rock Rd, 0.5 mi. N of Zink Rd., 2 mi. SW of Brush Creek. 1006 Comment
  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
  CAS-BOT-BC244400  Poa annua Lowell Ahart 1987-5-6 5559 Butte Along the N Fork of the Feather RIver, near the Poe Power House, about 2 miles SE of Jarbo Gap 271 Comment
  CHSC29055  Poa annua R. A. Schlising 1980-4-2 3539 Butte Richvale vernal pools; 1/4 mi S of junction Hwy 162 to Oroville and Hwy 99; along latter and across from Thermalito Afterbay. Comment
  JEPS106266  Poa bolanderi Lowell Ahart 2004-7-23 11305 Butte On the east side of the road, north of the West Branch Campground, south of the Bridge across the West Branch of the Feather River, about 1 1/2 miles (air) west of Philbrook Reservoir Dam, about 3 3/4 miles (air) southeast of Butte Meadows 1456 Comment
  SEINET10888236  Poa bolanderi A. Arthur Heller 1917-7-29 Heller 12868 Butte Summit above Jonexville in granite. In open forest of Abies magnifica. Undershrubs are Uva-ursi Cerasus, Ceanothus cordulatus and velutinus. 2134 Comment
  CDA14074  Poa compressa G. F. Hrusa, T. D. Wilfred 1997-7-3 13957 Butte Sierra Nevada; NE side of upper end of Paradise Lake. Where last tributaries from E enter. Old growth Douglas-fir/mixed hardwoods. Rhizomatous perennial in moist, formerly disturbed areas at lake margin. Comment
  CHSC102820  Poa palustris Lowell Ahart 2009-6-3 15815 Butte About 100 yards west of the table at the hold homestead and 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. 239 Comment
  CAS-BOT-BC255973  Poa pratensis Lowell Ahart 1980-5-17 2275 Butte 1/2 mile south-east of Hurleton 600 Comment
  HSC92567  Poa secunda subsp. secunda J. P. Smith, J. O. Sawyer 1973-4-14 6056 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC107428  Poa sierrae L. P. Janeway 2011-7-21 10517 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 23N60 between crossings of Jordan Creek and Marble Creek, 3.1 air km east of Rogers Cow Camp. On steep 10 m high road cutbanks, east-facing. 1067 Comment
  CHSC2376  Pogogyne douglasii R. Carter 1965-5-13 197 Butte Exact location unknown, but found somewhere along Cana Rd. ca. 9 mi. NE of Chico W of Hwy. 99E. 45 Comment
  JEPS62440  Pogogyne douglasii R. F. Hoover 1936-5-20 1155 Butte 10 miles Southwest of Oroville Comment
  HSC66211  Pogogyne zizyphoroides Jane A. Rogers 1979-4-17 13 Butte Intersection of Hwy. 99E and Broyles Rd., 11 mi. N of Chico 55 Comment
  JEPS103459  Polanisia dodecandra subsp. trachysperma Lowell Ahart 2002-9-27 9938 Butte Along the E side of the Sacramento River, NW of Parrott Landing, ca 1 mile SE of Ord Ferry, ca 2 miles SE of Ordbend, ca 12 miles (air) SW of Chico. 32 Comment
  CDA25322  Polanisia dodecandra subsp. trachysperma Sterling O. Mattoon 1971-9-1 Butte Lindo Channel Creek, Cohasset Road, 0.25 mile east of Esplanade. 0 Comment
  CHSC32101  Polygala cornuta L. Ahart 1974-8-3 583 Butte At Merry Mountain Village. 914 Comment
  CHSC40392  Polygala cornuta Lowell Ahart 1985-6-30 5081 Butte Along the Forbestown Ditch, about 2 1/2 miles north-east of Forbestown. 868 Comment
  SEINET5845272  Polygala cornuta M. J. Williams, W. Roderick 1984-5-25 84- 22 -6 Butte Near Skyline Road, between Magalia and Paradise 640 Comment
  CHSC46976  Polygala cornuta var. cornuta Vernon H. Oswald 1989-9-27 4017 Butte Paradise Lake ca. 3 mi n of Magalia. On the edge of the roadway which surrounds the perimeter of the lake. 777 Comment
  CHSC96818  Polygala cornuta var. cornuta Lowell Ahart 2007-5-29 13921 Butte About 1/8 mile south of Bald Rock Dome, on the east side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 1/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 685 Comment
  JEPS118036  Polygonum arenastrum Lowell Ahart 2011-6-3 17364 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico 60 Comment
  UC1564727  Polygonum aviculare subsp. aviculare V. Oswald and L. Ahart 1989-7-21 3870 Butte junction of Willow Creek and Colby Creek (on n side of Humbold Rd ca 1 mi w of Jonesville, w side of Colby Creek) 1487 Comment
  CAS-BOT-BC414196  Polygonum aviculare subsp. depressum A. A. Heller 1919-8-9 13349 Butte At Chico Comment
  CHSC102850  Polygonum bidwelliae Lowell Ahart 2009-5-30 15806 Butte On the west side of Guardians Trail, about 50 yards north of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 411 Comment
  UC1259773  Polygonum bidwelliae Lowell Ahart 1979-5-7 Butte ca 1/2 mi n Kunkle Reservoir (ca 1/4 mi of the Pentz-Magalia Hwy, 2 1/2 mi se of Paradise) 472 Comment
  POM196100  Polygonum bistortoides E. B. Copeland 1929-7-20 s.n. Butte Jonesville. 1550 Comment
  CHSC113153  Polygonum californicum Lowell Ahart 2013-11-13 19255 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 299 Comment
  JEPS94929  Polygonum californicum Lowell Ahart 1996-11-2 7707 Butte about 12 mi s of Oroville (Peter Ahart Ranch, about 1 1/2 mi n and 1 mi e of Honcut); Peter Ahart Ranch 36 Comment
  CAS-BOT-BC414370  Polygonum californicum A. A. Heller 1916-10-22 12667 Butte Canon of Chico Creek east of Chico Comment
  CAS-BOT-BC414418  Polygonum douglasii A. A. Heller 1914-7-23 11603 Butte About Chico Meadows 1219 Comment
  CHSC39133  Polygonum douglasii subsp. douglasii R. A. Schlising 1980-6-30 3799 Butte Small meadow, 0.1 mile s of jct Humboldt Road and Skyway, along the latter, at Butte Meadows. 1341 Comment
  CHSC58944  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-7-29 6873 Butte About 1 mile northeast of the Carr Mine, about 3/4 mile northwest of Lotts Lake. 1798 Comment
  CHSC58945  Polygonum douglasii subsp. douglasii Lowell Ahart 1992-8-2 6908 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 (air) miles north-east of Concow Reservoir. 1158 Comment
  SEINET10479647  Polygonum hydropiperoides Lowell Ahart 1991-9-14 Ahart 6716 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC33948  Polygonum minimum M. S. Taylor; L. Ahart 1981-8-16 4209 Butte N side of 25N04, near upper Big Kimshew Creek, ca. 2 mi se of Philbrook Reservoir, ca. 6 mi ne of Stirling City. 1950 Comment
  CHSC39128  Polygonum parryi R. A. Schlising; J. Jokerst, R. Banchero 1980-6-16 3712 Butte 0.1 mi s of jct Humboldt Road and Skyway at Butte Meadows, along Skyway in meadow. Comment
  CHSC48664  Polygonum parryi Vernon Oswald 1986-5-6 1997 Butte Cohasset ridge along the dirt road paralleling Cohasset Hwy on the south. 457 Comment
  SEINET11934432  Polygonum parryi L. Ahart, Ahart, P. 1984-1 4730 Butte About 1.5 mi SE of Bald Mountain, 3/4 mi W of Oak Point, about 4 mi NE of Stirling City 1500 Comment
  POM220087  Polygonum phytolaccifolium H. F. Copeland 1928-8-29 440 Butte Neighborhood of Jonesville, canyon of Jones Creek. 1829 Comment
  CHSC113431  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2014-7-7 19582 Butte West of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. 1690 Comment
  CHSC94265  Polygonum polygaloides subsp. kelloggii Lowell Ahart 2006-7-16 13006 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
  UC1586533  Polygonum punctatum Lowell Ahart 1991-9-14 6714 Butte about 2 mi e Honcut (sides of reservoir); Joie Osgood Ranch 45 Comment
  CAS-BOT-BC109252  Polygonum shastense V. Oswald; L. Ahart 1988-7-29 3656 Butte Ca. 5 mi (air) southeast of Jonesville on the ridge running eastwards from the peak of Snow Mountain. 2097 Comment
  CAS-BOT-BC71863  Polypodium californicum Lowell Ahart 1981-3-29 2716 Butte Along Ponderosa Way, Ponderosa Dam 350 Comment
  CAS-BOT-BC71864  Polypodium californicum Lowell Ahart 1980-3-26 2056 Butte Along Swedes Flat Road, near Bangor, about 1 mile east of the Bangor-Oroville Highway Comment
  SEINET10530405  Polypodium californicum Mary Susan Taylor 1979-12-25 Taylor 2309 Butte T22N R2E sec 17. Abundant at base of rocky outcroppings, Fern Banks, opposite Chico Municipal Golf Course, Upper Bidwell Park, Chico. 91 Comment
  CHSC106573  Polypodium calirhiza C. Arnett 2008-2-19 Butte Fern Wall, Bidwell Park. 89 Comment
  CHSC115494  Polypodium calirhiza L. P. Janeway 2015-11-18 11632 Butte Northern High Sierra Nevada. Plumas National Forest; along Ponderosa Way 4.3 road-km north of Lower Forbestown Road; 2.7 air-km north of Sunset Hill; north-facing side of the canyon above the upper end of South Fork Feather River arm of Lake Oroville. 483 Comment
  CHSC23411  Polypodium calirhiza M. S. Taylor 1976-3-6 1014 1/2 Butte Along Macabes Creek, ca. 500 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC32628  Polypodium calirhiza M. S. Taylor; L. Hanson 1981-4-2 3469 Butte Se side of Forbestown Reservoir, s side of rd 20N29, ca. 3 air mi n of Woodleaf. 548 Comment
  JEPS104148  Polypodium calirhiza Lowell Ahart 2003-4-10 10077 Butte Face of basalt cliff, on the e rim of South Table Mountain, ca 2 1/2 mi (air) n of Oroville. 334 Comment
  RSA715711  Polypodium calirhiza L. Ahart 2005-1-20 11472 Butte West side of McCabe Creek, above the high water mark of Lake Oroville, about 1/4 mile soutj of the siphon. about 3 mi northeast of Hurleton, about 7 mi east of Oroville Dam. 305 Comment
  UCD80677  Polypodium calirhiza CNPS SN Foothill Team 2005-3-30 SNFN 0070 c Butte CDFG North Table Mountain Wildlife Area. This site is in a creek channel on Table Mountain. From the parking area, go south to Campbell Creek in Beatson Hollow, along old road approximately 3 miles west of Cherokee Rd. 306 Comment
  CDA2331  Polypogon interruptus A. A. Beetle 1941-6-27 2745 Butte Near Lomo, 13 miles west of Chester, near road to Chico Creek. 0 Comment
  CHSC4391  Polypogon interruptus V. Hagaman 1966-4-25 Butte Field on CSC campus. Comment
  CHSC82267  Polypogon interruptus Lowell Ahart 2002-4-15 9492 Butte On the east side of a canal bank, on the west side of Faris Road, 3 miles west of West Biggs Gridley Road, about 3 miles (air) southwest of Biggs. 24 Comment
  UC1562415  Polypogon interruptus Lowell Ahart 1990-5-25 6489 Butte about 1/8 mi nw Enterprise Bridge (across Lake Oroville, below high water line Lake Oroville, e of Enterprise Boat Launch Area); Lake Oroville 259 Comment
  SACT002116  Polypogon lutosus Herbert Copeland 1923/07/00 Butte Comment
  CHSC39521  Polypogon maritimus Lowell Ahart 1983-6-12 4052 Butte Along the edge of the road, about 1 mile south of Crystal Hill, near Oregon Gulch, near Lake Oroville, about 7 miles south-west of Feather Falls. 425 Comment
  JEPS88273  Polypogon maritimus Vernon H. Oswald and Lowell Ahart 1996-5-27 7662 Butte U.S. Fish & Wildlife Service parcel between 7 Mile Lane & the Sacramento R. Sacramento R. Nat'l Wildlife Refuge (s. side of levee rd. at s.w. corner of Tract 3.4, Sanctuary II, Llano Seco Unit); , Llano Seco Unit 32 Comment
  CAS-BOT-BC232579  Polypogon monspeliensis Forman T. McLean 1921-9-25 7 Butte Nelson Comment
  SEINET10530118  Polystichum imbricans Mary Susan Taylor 1980-5-27 Taylor 2668 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
  CHSC113597  Polystichum imbricans subsp. curtum Lowell Ahart 2014-8-24 19723 Butte On the south side of the road, about 150 yards southwest of the Forbestown Reservoir Dam, about 4 miles (air) northeast of Forbestown. 577 Comment
  CHSC60945  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-6-26 7036 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  UC1609405  Polystichum imbricans subsp. imbricans Lowell Ahart 1993-8-8 7151 Butte ca. 1 3/4 mi nw Sly Creek Dam (ca. 1 1/2 mi nw of Lewis Flat, e side Pinkard Creek) 1097 Comment
  CAS-BOT-BC76700  Polystichum munitum M. S. Taylor 1978-7-21 1799 Butte Lake Madrone at its jct. with Oroville-Quincey Hwy. ca. 10 mi. NE of Oroville. 609 Comment
  SEINET10530127  Polystichum munitum Mary Susan Taylor 1981-5-29 Taylor 3810 Butte T22N R5E sw sec 15, Pulga SW quad. Vic. of old mining claim cabin, on Chino Ridge, at end of spur rd 22N85, off 22N31, at Chino Creek, ca. 3 air mi SW of Coyote Gap, ca. 16 air mi N of Oroville. Dense Yellow Pine Forest. Three cub bears sighted here. 3200 ft. 975 Comment
  CAS-BOT-BC102495  Populus fremontii Lowell Ahart 1980-3-13 2042 Butte 2 1/2 miles north and 3 miles east of Honcut Comment
  CHSC46824  Porterella carnosula R. A. Schlising; R. Banchero 1980-7-14 3907 Butte N part of county, 1.1 mi N of Snag Lake on the Skyway. Tiny, overgrown lake N of road. 1807 Comment
  SEINET11664887  Potamogeton natans L. P. Janeway 1987-1 2166 Butte along French Creek across from mouth of Ram Creek 617 Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink Comment
  CHSC55066  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte In a reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  UC1586528  Potamogeton pectinatus Lowell Ahart 1991-9-14 6724 Butte about 2 mi e of Honcut; Joie Osgood Ranch 45 Comment
  RSA754920  Potamogeton pusillus subsp. tenuissimus Robert A. Schlising 2005-9-16 4463 Butte East of Jonesville and east of Snag Lake, in Summit Lake. 1890 Comment
  CHSC48857  Potentilla anglica Vernon Oswald 1987-5-25 2922 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. Along the edge of the stream. 68 Comment
  CAS-BOT-BC539449  Potentilla gracilis var. fastigiata E. B. Copeland 1929-7-24 372 Butte Jonesville 1550 Comment
  POM219382  Potentilla millefolia H. F. Copeland 1535 Butte Jonesville, Butte Creek Meadows 1829 Comment
  CHSC101760  Poterium sanguisorba Lowell Ahart 2009-5-23 15732 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  SEINET10532862  Proboscidea louisianica subsp. louisianica Mary Susan Taylor 1978-9-8 Taylor 1902 Butte Around rice fields, ca. 6 mi N of Chico. 61 Comment
  CHSC37530  Proboscidea lutea M. S. Taylor; L. Ahart 1982-10-11 5158 Butte Graylodge Wildlife Refuge, just se of HQ quad, 12 mi sw of Gridley. 19 Comment
  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
  CHSC38647  Prunus dulcis Vernon Oswald 1983-3-5 113 Butte Upper Bidwell Park, Chico, between the Horse Arena and Lindo Channel. 79 Comment
  CHSC23647  Prunus emarginata M. S. Taylor 1976-4-4 1063 Butte On n side of Ponderosa Way, ca. 3 mi w of junc of Ponderosa Way and Hwy 32, ca. 23 mi ne of Chico. 487 Comment
  CHSC5987  Prunus laurocerasus M. MacArthur 1968-6-12 138 Butte Along SW wall of PSA building, near NW end, Chico State College campus, Chico. 60 Comment
  CAS-BOT-BC356392  Pseudognaphalium beneolens Lowell Ahart 1980-7-29 2493 Butte Along Swedes Flat Road 320 Comment
  JEPS115251  Pseudognaphalium beneolens Lowell Ahart 2008-11-4 15398 Butte Below the high water line of Lake Oroville, about one mile southeast of the large parking area on the north end of Oroville Dam, about 5 miles (air) northeast of Oroville 263 Comment
  CAS-BOT-BC357236  Pseudognaphalium microcephalum A. A. Heller 1916-9-23 12659 Butte Sierra foothills near Forest Ranch Comment
  JEPS88522  Pseudognaphalium stramineum Lowell Ahart 1996-6-25 7685 Butte about 1 1/4 mi n and 1/2 mi e Honcut (about 12 mi s of Oroville); Peter Ahart Ranch 36 Comment
  CAS-BOT-BC357549  Pseudognaphalium stramineum Mrs. C. C. Bruce 1897-5-1 2112 Butte Butte Creek Comment
  CHSC105611  Pseudognaphalium thermale L. P. Janeway 2010-8-5 10137 Butte Northern High Sierra Nevada. Plumas National Forest; along Road 21N48 (closed) about 300 m south of Milsap Bar Road; 1.1 km northwest of Middle Fork Feather River and 2.7 km southeast of Brush Creek town.) 996 Comment
  HSC67625  Ptelea crenulata J. P. Smith, J. O. Sawyer 1973-4-14 6063 Butte Rock Rd., 1 mi. W of Cohasset Rd. near Chico Comment
  CHSC95164  Pterospora andromedea R. D. Fischer 2004-6-20 817 Butte Chico Meadows. Nothern 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. 1280 Comment
  UC478489  Pterospora andromedea E. B. Copeland 1931-7-15 668 Butte Jonesville; ; Jonesville, Butte Co. 472 Comment
  CHSC43944  Pterostegia drymarioides Vernon Oswald 1988-4-21 3278 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. Common at the base of an outcrop of Tuscan Formation mudflow on the north side of a swale near the north tip of the ranch. 60 Comment
  CHSC36068  Puccinellia simplex J. D. Jokerst; L. Ahart, M. S. Taylor 1982-4-29 1545 Butte Grey Lodge east of dirt road z 1/4 mile S of Rutherford Road. Comment
  SD3510  Pyrola secunda E. B. Copeland 1930-8-7 434 Butte Jonesville 1500 Comment
  CHSC47412  Quercus Lowell Ahart 1976-9-1 996 Butte On the west side of North Hpncut Creek, Joie Osgood Ranch, about 2 1/2 miles north and 3 miles east of Honcut. 60 Comment
  SEINET10833519  Quercus Mary Susan Taylor 1980-5-15 Taylor 2641 Butte T23N R2E ne sec 7. In and around vernal pools in Chaparral area on Cohasset Ridge, ca. 1/4 mi E of Cohasset Rd, ca. 9 mi NE of Chico. 396 Comment
  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
  SEINET13953242 Image available Quercus chrysolepis A. A. Heller 1918-1 Butte Honey Run grade on a north slope in the digger pine and oak belt Comment
  CAS-BOT-BC86117  Quercus dumosa John Thomas Howell 1955-6-15 30492 Butte 6 miles from Paradise on road to Pentz 426 Comment
  SEINET10477877  Quercus durata Mary Susan Taylor 1979-6-12 Taylor 2301 A Butte Magalia serpentine area down to Feather River. With J.D. Jokerst & L. Ahart. 671 Comment
  CHSC32633  Quercus durata var. durata M. S. Taylor; L. Hanson 1981-4-2 3476 Butte Ca. 1/5 mi se of Ponderosa Way bridge over West Branch Feather River, in Genii Mine area, in steep serpentine slope, ca. 3/4 mi (downhill) ne of Magalia. 548 Comment
  UCD45957  Quercus durata var. durata Clarence R. Quick 1961-9-21 61 38 Butte West Branch of N. Fork of Feather River, Butte Co. Comment
  UCD169291  Quercus garryana var. breweri L. P. Janeway; B. Castro 2006-5-7 8576 Butte Top of serpentine area southeast of the east end of Hollywood Road, upper Magalia; more or less overlooking Little Butte Creek about 600 m north-northwest of the upper end of Magalia Reservoir. 759 Comment
  UCD46119  Quercus garryana var. semota C. G. Albertus 1933-7-1 39 Butte southwest slope of Promontory Point. 1005 Comment
  CAS-BOT-BC105143  Quercus kelloggii John Thomas Howell 1959-9-20 34700 Butte Feather River Highway 9 mi NE of Oroville Comment
  CHSC33324  Quercus kelloggii P. Reynolds 1980-4-12 19 Butte Corner of 4th street and Ivy, in the City of Chico. 70 Comment
  UC1135701  Quercus lobata H. A. Jensen 1934-10-25 389 Butte 1.5 mi n Penty; Chico Quad., Dry Creek 152 Comment
  UCD47410  Quercus vacciniifolia J. I. Mallory 1970-8-20 378 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  UC1135834  Quercus wislizeni C. G. Albertus 1933-6-26 33 Butte 0.5 mi s Nelson's Bar; Chico Quad. 365 Comment
  SEINET13954081 Image available Quercus wislizeni A. S. Barclay, R. D. Barbee and K. E. Blum 1962-1 1345 Butte 19 mi E of Chico on road to Centerville 236 Comment
  UC1135915  Quercus wislizeni var. frutescens J. E. Sowder 1933-8-4 124 Butte slope above de Sable Power House; Chico Quad. 457 Comment
  JEPS119727  Quercus wislizeni var. wislizeni Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18272 Butte Path in Cedar Grove, southwest of parking area, Lower Bidwell Park, Chico. Comment
  CDA38780  Rafinesquia californica L. Ahart 2012-4-3 17928 Butte On the west side of a very large basalt outcrop, about 10 yards west of South Rim Trail, about 5/8 mile west of Highway 32, about 8 3/4 miles (air) northeast of Chico, south part of Upper Bidwell Park. Comment
  CHSC41523  Ranunculus alismifolius var. alismellus Kirsten Tarp 1983-8-27 361 Butte NE part of county n of Philbrook Reservoir at Coon Hollow. At margin of meadow. 1706 Comment
  CHSC97403  Ranunculus alismifolius var. alismellus Robert Fischer 2006-6-11 1009 Butte Butte Meadows. North-east corner of Butte County along Scotts John Road 1.5 miles north of county road 26N27 and 5.5 miles north of the Humboldt Road junction. UTM: 10634233E, 4441779N. 1752 Comment
  CHSC48696  Ranunculus aquatilis var. aquatilis Vernon Oswald 1984-3-26 1088 Butte Beside Meridian Rd. ca 9.5 mi nnw of Chico and 0.6 mi s of the Tehama-Butte County line. In a drainage in a field. 83 Comment
  UCD80871  Ranunculus arvensis Robert E. Preston 2007-5-3 2473 Butte Chico, Upper Bidwell Park, N of park road, W of power lines. 91 Comment
  CHSC46844  Ranunculus flammula var. ovalis Kirsten Tarp 1982-7-16 206 Butte N part of county at Crane Valley; streamside at margin of meadow. 1584 Comment
  CHSC46845  Ranunculus hebecarpus Kirsten Tarp 1982-4-3 100 Butte Near Chico in Upper Bidwell Park. 152 Comment
  CHSC53702  Ranunculus hebecarpus Kirsten Tarp 1983-4-3 251 Butte S part of county on Swedes Flat Rd. 335 Comment
  HSC100728  Ranunculus hebecarpus Lowell Ahart 2009-4-22 15592 Butte Along the Guardians Trail, ~100 yd. N of Pine Trail, Upper Bidwell Park, W of the intersection of Hwy. 32 and Ten Mile House Rd., 10 mi. NE of Chico. 382 Comment
  SD129647  Ranunculus muricatus Barbara Ertter, Lowell Ahart 1986-4-13 5888 Butte ca 2 airmiles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch, mostly sheep pasture 29 Comment
  SEINET10536142  Ranunculus muricatus Mary Susan Taylor 1980-4-1 Taylor 2416 Butte T22N R2E sw border sec 30. Valley Grassland, ungrazed vernal drainages, between Notre Dam Blvd. and Hwy 99, and the Skyway and Humboldt Road, just E of Chico; area soon to be developed. 70 Comment
  UC204874  Ranunculus occidentalis A. A. Heller 1914-3-19 11215 Butte Canyon of Big Chico Creek 76 Comment
  SEINET194953  Ranunculus occidentalis A. A. Heller 1938-4-23 15054 Butte Summit on Reather River Hwy 20 mi from Oroville Comment
  CHSC39325  Ranunculus occidentalis var. occidentalis Lowell Ahart 1983-6-26 4155 Butte Found along Ponderosa Way, about 2 miles east of where Ponderosa Way crosses the East Fork of Canyon Creek, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 600 Comment
  CHSC52693  Ranunculus orthorhynchus var. orthorhynchus Kirsten Tarp 1983-7-31 316 Butte S of Butte Creek House ca. 32 air miles ne of Chico; in meadow. 1828 Comment
  POM268835  Ranunculus populago H. F. Copeland 1929-6-10 1216 Butte Jonesville. 1524 Comment
  UC1586583  Ranunculus repens Vernon H. Oswald and Lowell Ahart 1991-6-5 4655 Butte e Hwy 32 (n of Carpenter Ridge Rd, between Forest Ranch and Lomo); West Branch of Butte Creek, Ewalt Camp 914 Comment
  CHSC533  Raphanus raphanistrum V. Holt 1935-3-27 Butte Sandy Gulch, Chico. 54 Comment
  UCD115181  Raphanus sativus A. A. Heller 1914-3-16 11203 Butte 8 miles north of Oroville. Comment
  CAS-BOT-BC59880  Rhamnus ilicifolia Paul Leskinen 1972-9-9 1420 Butte Highway 155 e. of Glenville. 914 Comment
  CAS-BOT-BC59889  Rhamnus ilicifolia Lewis S. Rose 1945-5-12 45049 Butte Richardson Springs. 304 Comment
  CAS-BOT-BC59923  Rhamnus ilicifolia Lewis S. Rose 1955-6-15 55104 Butte 6 mi. se. of Paradise on Pentz Road. 426 Comment
  CAS-BOT-BC59924  Rhamnus ilicifolia Lowell Ahart 1981-7-7 2917 Butte Hurleton Swedes Flat Road. Near Road to Oak Grove Cemetery, ca. town. 600 Comment
  CHSC46396  Rhamnus ilicifolia Lowell Ahart 1989-5-29 6303 Butte Along Robinson Mill Road, about 1 1/2 miles south of Forbestown Road. 670 Comment
  SEINET10493675  Rhamnus ilicifolia Mary Susan Taylor 1979-10-13 Taylor 2259 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
  CHSC20002  Rhamnus tomentella subsp. tomentella M. S. Taylor 1975-1-16 373 Butte Ca. 1/4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  JEPS48071  Rhamnus tomentella subsp. tomentella Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2689 Butte w side Pulga Bridge (at Pulga Bridge); North Fork of Feather River Comment
  CAS-BOT-BC199713  Rhododendron occidentale Lowell Ahart s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC51845  Rhus aromatica Mike Pahl 1988-4-19 20 Butte 14.3 mi NE of Chico on Cohasset Hwy, 0.3 mi off the rd. 548 Comment
  CHSC44064  Rhynchospora californica L. P. Janeway 1988-5-30 2717 Butte Cyn of Big Chico Cr; upper Bidwell Park, 2.8 mi along Upper Park Rd from Wildwood Ave and ca 1/4 mi NW up the slope; also ca 1/2 mi NE of the power lines. 152 Comment
  CHSC45135  Rhynchospora californica Vernon Oswald 1984-6-14 1291 Butte Upper Bidwell Park, Chico, between Upper Park Rd. and Salmon Hole near Parking Area O. 182 Comment
  CHSC78317  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC50807  Rhynchospora capitellata Vernon Oswald; Lowell Ahart 1990-7-31 4424 Butte Flea Valley bordering Concow Rd, ca. 4 mi north of Concow. 1127 Comment
  SEINET4178997 Image available Rhynchospora glomerata var. minor Unknown 1980-9-10 Butte Little Bald Rock 1100 Comment
  SFV10395  Ribes amarum M. L. Vincent 1965-4-14 613 Butte Sierra Nevada Skyway, 1.5 miles north of Magalia. 760 Comment
  SEINET10482917  Ribes amarum Mary Susan Taylor 1980-4-18 Taylor 2505 Butte T23N R3E ne sec 27 Paradise quad. Ca. 1 mi S of Nimshew, ca. 1/4 mi E of Nimshew Road; Yellow Pine Forest. With J.D. Jokerst. 610 Comment
  CAS-BOT-BC169093  Ribes inerme var. inerme E. B. Copeland 1931-5-9 646 Butte Jonesville 1500 Comment
  CAS-BOT-BC212671  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte West Branch of the North Fork of the Feather River near Stirling 914 Comment
  CHSC32683  Ribes nevadense M. S. Taylor 1981-3-24 3446 Butte S side of Hwy 70 in immediate vicinity of Poe Dam ca. 1 mi n of Pulga. 487 Comment
  UC1127571  Ribes roezlii J. E. Sowder 1933-7-5 105 Butte 2 mi se Promontory Point; Chico Quadrangle Comment
  UC725481  Ribes roezlii A. A. Heller 1938-5-1 15057 Butte near DeSabla 853 Comment
  RSA0024577  Ribes roezlii var. cruentum A. A. Heller 1919-3-12 13088 Butte Ten Mile House east of Chico. Comment
  CAS-BOT-BC198956  Ribes roezlii var. roezlii H. F. Copeland 1929-6-11 1237 Butte Jonesville 1524 Comment
  HSC65653  Ribes roezlii var. roezlii J. P. Smith, J. O. Sawyer 1973-4-14 6060 Butte Cohasset Comment
  CHSC42389  Rigiopappus leptocladus Lowell Ahart 1979-5-29 1905 Butte Along the edge of a dirt road, about 1/2 mile east of Kunkle Creek, about 2 1/2 miles south-east of Paradise. 457 Comment
  CHSC50102  Rigiopappus leptocladus Vernon Oswald 1990-4-24 4168 Butte Lime Saddle Recreation Area on the West Branch of Lake Oroville, east side of Nelson Bar Rd just south of the spur road to Lime Saddle Powerhouse. 280 Comment
  SEINET10971250  Rigiopappus leptocladus Mary Susan Taylor 1981-5-21 Taylor 3770 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
  CHSC101266  Romulea rosea var. australis Lowell Ahart 2009-3-25 15519 Butte Open pasture field, Peter Ahart Ranch, about 1/2 mile north and 1 mile east of Honcut, about 12 miles south of Oroville. 33 Comment
  UC1594677  Rorippa curvisiliqua Lowell Ahart 1992-3-21 6738 Butte s Spillway Boat Launch Area (below the high water line Lake Oroville); below the high water line of Lake Oroville 243 Comment
  CAS-BOT-BC74466  Rorippa curvisiliqua Lowell Ahart 1990-4-15 6452 Butte Lake Oroville, east of the Enterprise Boat Launch Area, 1/8 mile northwest of Enterprise Bridge. 289 Comment
  CHSC530  Rorippa nasturtium-aquaticum R. M. Staley 1952-7-5 Butte Butte Creek. 609 Comment
  UC1594531  Rorippa palustris Lowell Ahart 1992-4-7 6745 Butte on s side Biggs Princeton Road about 3 mi w Biggs; w of Biggs 30 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
  CHSC43212  Rosa bridgesii L. P. Janeway 1987-6-19 2240 Butte Side ravine south from Sly Cr; 1.6 mi from the Challenge-LaPorte Rd along the road to the SE side of Sly Cr Reservoir. 1097 Comment
  JEPS108139  Rosa bridgesii L. P. Janeway 2005-5-29 8402 Butte Northern High Sierra Nevada. Along major dirt road 2.6 km south of Stirling City towards West Branch Feather River crossing 1006 Comment
  JEPS99061  Rosa californica Lowell Ahart 2002-6-7 9709 Butte On the north banks of North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 12 miles (air) SE of Oroville. 36 Comment
  SEINET10904100  Rosa californica Mary Susan Taylor 1980-5-24 Taylor 2747 Butte Peter Ahart Ranch, Honcut. 50 Comment
  POM140263  Rosa gymnocarpa Kate Conger 1907-1 s.n. Butte Brush Creek. Comment
  SEINET10483517  Rosa gymnocarpa Lowell Ahart, Peter Ahart 1983-9-21 Ahart 4464 Butte T20N R8E section 5. Along French Creek, ca. 3 mi n of the Sly Creek Dam, n of Strawberry Valley. Yellow Pine Forest; 900 m. 900 Comment
  JEPS103551  Rosa pisocarpa subsp. ahartii Lowell Ahart 2002-6-2 9680 Butte N side of Black Bart Road, 1 1/2 mi E of int. of Forbestown Rd and Black Bart Rd, 12 air mi SE of Oroville 548 Comment
  CHSC23537  Rubus armeniacus M. S. Taylor 1976-3-16 1027 Butte On n side of Butte Creek, ca. 5 ft w of Honey Run Bridge, ca. 8 mi e of Chico. 152 Comment
  CHSC52468  Rubus armeniacus L. P. Janeway 1987-5-28 2119 Butte Creeklet crossing Four Trees Rd 0.2 mi up from Hwy. 70. At edge of rd. 487 Comment
  CHSC78265  Rubus armeniacus Lowell Ahart 2000-6-29 8546 Butte In the north part 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
  CHSC42006  Rubus laciniatus Lowell Ahart 1975-9-4 976 Butte Along a dirt road, about 2 miles north of Feather Falls. 548 Comment
  CHSC45812  Rubus laciniatus L. P. Janeway 1987-6-13 2201 Butte Southeast side of Concow Rd at Flea Valley. Along Flea Valley Cr. 1127 Comment
  CHSC45815  Rubus laciniatus L. P. Janeway 1987-5-20 2060 Butte Near Gold Flat, Hodap Cr, jct of Lunt Rd and Nelson Bar Rd. Cr bottom. 457 Comment
  SBBG3096  Rubus laciniatus H. and M. Dearing 1938-6-21 2048 Butte 20 mi NE of Chico, near Shuffleston Station Comment
  SEINET10483576  Rubus laciniatus Mary Susan Taylor 1980-4-27 Taylor 2556 Butte T23N R3E nw sec 27. Paradise quad. Along Middle Butte Creek off of Little Butte Creek in Riparian Woodland, very shady, ca. 1.5 mi SE of Nimshew. With J.D. Jokerst. 610 Comment
  UC481513  Rubus parviflorus H. F. Copeland 1930-8-26 1328 Butte above hotel (Jonesville); Jonesville Comment
  JEPS122191  Rubus ursinus Lowell Ahart 2014-4-16 19365 Butte On the sides but near the bottom of a large canal, about 100 yards north of East Gridley Road, on the west side of the Feather River, about 2 miles east of Gridley. Comment
  CHSC100910  Rumex acetosella R. A. Schlising; Pauleen Broyles 1988-8-9 4687 Butte Head of Concow Creek (Concow Meadows), south of Flea Valley. 1097 Comment
  CHSC28560  Rumex acetosella M. S. Taylor; J. T. Howell 1978-7-21 1806 Butte On s side of Oroville-Quincy Hwy, ca. 9 mi n of Lake Madrone. 914 Comment
  CDA29951  Rumex conglomeratus L. 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 Comment
  CAS-BOT-BC421617  Rumex crispus A. A. Heller 1914-7-23 11595 Butte Sierra Nevada at Chico Meadows 1219 Comment
  SEINET10479438  Rumex dentatus subsp. klotzschianus Mary Susan Taylor 1982-4-28 Taylor 4369 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
  CDA42961  Rumex fueginus L. Ahart 2013-6-18 18804 Butte About 60 yards west of Parking Lot 14, Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. Comment
  CHSC111171  Rumex fueginus Lowell Ahart 2013-6-18 18804 Butte Gray Lodge Wildlife Management Area, about 7 miles (air) southwest of Gridley. About 60 yards west of Parking Lot 14. 19 Comment
  CHSC33422  Rumex pulcher R. A. Schlising 1981-6-14 4082 a Butte Richvale Vernal Pools; 1/4 mi S of jct Hwy 162 to Oroville and Hwy 99, along latter and across from Thermalito Afterbay. Comment
  CHSC39342  Rumex pulcher Lowell Ahart 1983-6-26 4145 Butte Around a small meadow along Ponderosa Way, about 1/2 mile south of the East Fork of Canyon Creek, about 13 1/2 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 550 Comment
  JEPS117514  Rumex pulcher Lowell Ahart 2010-5-22 16717 Butte About 140 yards east of the fence, about 240 yards east of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 392 Comment
  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
  UC1562014  Sagina apetala Barbara Ertter with Lowell Ahart 1986-4-13 5896 a Butte ca. 2 airmiles n.-n.e. of Honcut (between Oroville and Marysville, Peter Ahart Ranch); Peter Ahart Ranch 30 Comment
  UC1212529  Sagina saginoides H. F. Copeland 1932-6-28 Butte vicinity of Jonesville (Lassen Nat'l Forest); Lassen Nat'l Forest Comment
  RSA4630  Sagittaria cuneata E. B. Copeland 1930-7-29 405 Butte Jonesville. 1550 Comment
  UC426897  Sagittaria cuneata E. B. Copeland 1930-7-29 5 Butte above Jonesville; above Jonesville 1700 Comment
  RSA69605  Sagittaria latifolia F. W. Peirson 1926-6-20 6759 Butte Banks of Sacramento River, 5 miles west of Chico. Comment
  CHSC43287  Sagittaria montevidensis subsp. calycina Lowell Ahart 1987-10-20 5918 Butte Rice field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  RSA4404  Salix eastwoodiae E. B. Copeland 1931-6-11 617 Butte Jonesville. Kirby's Meadow. 1750 Comment
  CHSC80067  Salix exigua L. P. Janeway; B. Castro 1999-6-4 6452 Butte Sacramento Valley. East side of the Sacramento River 1.4 km southeast of the Ord Ferry Road Bridge. 30 Comment
  CHSC42436  Salix exigua var. hindsiana Lowell Ahart 1987-5-6 5540 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  RSA4403  Salix geyeriana var. argentea E. B. Copeland 1931-6-10 618 Butte Jonesville, Butte Creek. 1500 Comment
  CHSC35988  Salix gooddingii J. D. Jokerst; R. A. Schlising, L. Ahart 1982-5-8 1559 Butte 2.5 airline miles E of Forbestown, Road to Forbestown Resv. At this Jct. With unnamed creek. Comment
  CAS-BOT-BC104083  Salix hindsiana C. R. Ball 1915-6-4 1944 Butte In old river channel near Biggs Comment
  CHSC38668  Salix laevigata Vernon Oswald 1983-5-8 458 Butte Upper Bidwell Park, Chico, 300 ft s of Upper Park Rd. ca. 1200 ft e of Parking Area N at Salmon Hole (1.4 mi e of power lines). 176 Comment
  CAS-BOT-BC125176  Salix lasiandra var. lasiandra A. A. Heller 1917-7-26 12812 Butte Butte Meadows 1280 Comment
  CAS-BOT-BC106982  Salix lasiolepis M. S. Taylor 1979-3-19 1934 Butte 1.5 mi e of Pulga bridge over Feather River, along Hwy 70, near Bear Ranch Creek, ca. 25 air mi n of Oroville 487 Comment
  CAS-BOT-BC129577  Salix lasiolepis var. lasiolepis Ira L. Wiggins 1925-1-31 1377 Butte Bank of Sandy Gulch Creek at junction with Chico Creek, 2 miles below Chico Comment
  CAS-BOT-BC129625  Salix lasiolepis var. lasiolepis John Thomas Howell; Gordon H. True 1967-5-9 42239 Butte Serpentine canyonside on northwest side of Feather River Canyon near Pulga Bridge - Sierra Nevada Comment
  CHSC84643  Salix lasiolepis var. lasiolepis Matt Quinn 2001-4-29 50 Butte Found along edge of Butte Creek approximately 1/4 mile downstream of Steel Bridge on Centerville Road. 158 Comment
  CHSC9696  Salix lasiolepis var. sandbergii E. L. Smith 1971-9-12 1068 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  HSC32607  Salix lutea R. A. Vanbianchi 1974-4-20 237 Butte Table Mtn. 305 Comment
  UC75007  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte banks of Butte Creek Chico Comment
  CAS-BOT-BC221114  Salvia sonomensis A. A. Heller 1914-5-18 11410 Butte West slope of the Sierra near Forest Ranch 822 Comment
  SD6666  Salvia sonomensis Mrs. R. M. Austin Butte Comment
  CHSC90240  Sambucus mexicana Robert Kissane 1989-4-22 15 Butte On Moore's ranch 2090 Oak Park Ave., Chico. 70 Comment
  POM219484  Sambucus mexicana E. B. Copeland 1931-7-29 691 Butte Jonesville. 1550 Comment
  CHSC90036  Sanicula bipinnatifida Peggy Fain 1991-4-6 15 Butte S. side of Richardson Springs Road ca. 3 km. from Cohasset Highway (just past first bridge). 152 Comment
  POM82730  Sanicula crassicaulis C. C. Bruce 1897-06 2060 Butte Little Chico Comment
  SEINET10840962  Sanicula crassicaulis Mary Susan Taylor, K. Tharp 1983-4-8 Taylor 4287 Butte T19N R4E se/ne sec 1. Oroville Dam quad. Immediate vicinity of Oroville Dam Visitors Center, Oroville. Foothill Woodland; 1200 ft. 366 Comment
  JEPS97504  Sanicula graveolens James D. Jokerst 1985-5-20 2355 Butte E of West Branch Feather River, 1 mi due E of the Skyway at Inskip Comment
  JEPS104026  Sanicula tuberosa Lowell Ahart 2003-4-15 10101 Butte Slopes of Beatson Hollow, sw of drainage entering Beatson Hollow, ca 1 1/4 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 284 Comment
  CHSC27219  Sarcococca ruscifolia P. Moyer 1971-2-1 72 Butte CSUC campus. NW corner of A.J.H. Bldg. 60 Comment
  CHSC1416  Sarcodes sanguinea 1954-5-30 Butte Rag Dump, near Stirling. 1066 Comment
  CAS-BOT-BC436863  Saxifraga Lowell Ahart 1975-3-18 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  RSA325945  Saxifraga oregana L. V. Ritter 1969-5-20 326 Butte 0.8 mi. e of Butte Meadows e side of Butte Meadow Rd. Comment
  CHSC1986  Scandix pecten-veneris V. Holt 1935-4-7 Butte Covered bridge, Butte Creek. 108 Comment
  CHSC44465  Scandix pecten-veneris Lowell Ahart 1988-4-30 5970 Butte On the Joie Osgood Ranch, along a small stream, east of North Honcut Creek, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 60 Comment
  CHSC34162  Schoenoplectus acutus var. occidentalis L. Ahart 1981-8-31 3061 Butte Drying bottom of Wyandotte Lake, ca. 8 mi e of Oroville. 137 Comment
  CHSC4413  Schoenoplectus acutus var. occidentalis J. Francis 1966-5-18 Butte On perimeter of pond n of golf course, Bidwell Park. Chico. Comment
  CHSC45182  Schoenoplectus acutus var. occidentalis Lowell Ahart 1975-6-3 780 Butte In a ditch, Peter Ahart Ranch, about 2 miles north and 1/10 mi east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC111655  Schoenoplectus mucronatus M. K. Bellue 1947-6-1 s.n. Butte 2 miles south of Palermo. 35 Comment
  CHSC28549  Scirpus diffusus M. S. Taylor 1979-7-18 1722 Butte On n side of Butte Creek, ca. 1/8 mi w of Road Island jct, at jct of Butte Creek and Old Humboldt Rd, ca. 1 mi w of Cherry Hill Campground, sw of Jonesville. 1524 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
  CDA2622  Scirpus glaucus Margaret Bellue 1947-8-23 Butte Barman Ranch, near Biggs. 0 Comment
  CHSC45117  Scirpus microcarpus Vernon Oswald 1987-5-25 2923 Butte Butte Creek Reserve on the se side of Butte Creek ne of Hwy 99, downstream from the dam for the Durham Mutual Ditch. 68 Comment
  NY415669  Scutellaria austiniae Mrs. C. C. Bruce 05 1897 1835 Butte Big Chico Comment
  HSC40295  Sedella congdonii J. P. Smith, J. O. Sawyer 1973-4-14 6043 Butte Bruce Lane, between Skyway and Humboldt Rd., E of Chico. Comment
  CHSC31089  Sedella pumila Robert A. Boer 1980-4-25 19 Butte Ca. 1/4 mi n of Humboldt Rd. and 1.5 mi e of the jct of Hwy 32 and Hwy 99, ca. 2.0 mi e of Chico. 131 Comment
  CHSC116966  Sedum spathulifolium Matthew Forster 2013-4-25 Butte Along 14 Mile House Rd. 472 Comment
  CAS-BOT-BC62125  Selaginella hansenii Lewis S. Rose 1945-5-12 45039 Butte Richardson Springs 304 Comment
  CHSC32648  Selaginella hansenii M. S. Taylor 1981-3-18 3419 Butte N side of Pulga Rd, ca. 1/4 mi e of its jct with Pulga bridge over Hwy 70. 487 Comment
  HSC81460  Selaginella hansenii M. Mesler, Karen Lu 1984-3-24 Butte Road between Chico and Paradise Comment
  JEPS79620  Selaginella hansenii Edward Lee 1951-10-9 Butte ca. 10.1 mi out of city limits Oroville (on Hwy. 24); N. Fork Feather River Comment
  CHSC96138  Selaginella wallacei Lowell Ahart 2007-2-24 13584 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
  SEINET10530445  Selaginella wallacei Mary Susan Taylor 1980-5-27 Taylor 2666 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
  CAS-BOT-BC69728  Selaginella wallacei Lowell Ahart 1968-3-13 s.n. Butte Peter Ahart Ranch, Honcut. 45 Comment
  HSC85730  Selaginella wallacei L. P. Janeway 1984-10-19 1182 Butte Big Bald Rock, a granite dome, N-facing side 976 Comment
  UC426993  Senecio aronicoides E. B. Copeland 1929-7-14 498 Butte Jonesville 1650 Comment
  CAS-BOT-BC213666  Senecio lewisrosei Lewis S. Rose 1939-6-7 39247 Butte North Fork of Feather River, 3 mi. s. of Pulga, Canyon side 609 Comment
  CHSC116987  Senecio sylvaticus Lowell Ahart 2016-6-4 20939 Butte On the east side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  UC832133  Senecio triangularis A. A. Heller 1914-7-23 11591 Butte in meadows Chico; in Chico meadows 1219 Comment
  CHSC46968  Senecio vulgaris Lowell Ahart 1974-2-25 307 Butte Peter Ahart Ranch, about 1 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  SEINET10473963  Senecio vulgaris Mary Susan Taylor 1975-3-25 Taylor 428 Butte Chico. Comment
  CAS-BOT-BC364550  Senecio vulgaris Lowell Ahart 1987-3-20 5482 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
  SEINET10904979  Senecio vulgaris Mary Susan Taylor 1973-1 Taylor 41 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  SEINET10929339  Sequoiadendron giganteum Mary Susan Taylor 1975-5-6 Taylor 562 Butte Campus of California State University Chico, along creek between bridge between Holt Hall and Butte Hall, and bridge between Holt Hall and Chemistry Bldg; Riparian Woodland. 61 Comment
  SEINET10901939  Setaria glauca Mary Susan Taylor 1979-10-3 Taylor 2221 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
  JEPS76247  Setaria gracilis W. L. Jepson 1939-8-17 19456 Butte Feather R. bottom near Oroville; Feather R. 45 Comment
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Jun 29 2007
  JEPS98268  Setaria gracilis Lowell Ahart 2000-5-17 8365 Butte 7 1/2 air miles W of Oroville (S margin of Thermalito Afterbay, N side of the poor dirt road, about 1/10 mi N of the Richvale Hwy, 1/2 mi E of Hwy 99) 42 Comment
  CDA13845  Setaria pumila G. F. Hrusa, T. D. Wilfred 1996-9-6 13573 Butte Butte Basin; Bank on E side of Butte Creek approx. 1/2 mi. NE of confluence with Howard Slough, and immed. below McPherrin Dam (private and scheduled for removal). Plant 1 meter tall, uncommon here. Comment
  CHSC23130  Setaria pumila M. S. Taylor 1975-10-3 929 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  JEPS115065  Setaria sphacelata Lowell Ahart 2007-11-3 14563 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
  CHSC54106  Sidalcea asprella Vernon H. Oswald; Lowell Ahart 1991-5-13 4578 Butte Dan Beebe Trail in Lake Oroville Recreation Area, between Canyon Drive and Oroville Dam Blvd East (opposite the spillway). 213 Comment
  CHSC116992  Sidalcea asprella subsp. asprella Lowell Ahart 2016-6-4 20933 Butte On the west side of Ponderosa Way, about 1 mile (air) northwest of Sunset Hill, about 2 1/8 miles (air) northwest of Forbestown. 732 Comment
  CHSC34964  Sidalcea diploscypha R. Schlising; P. Minton 1981-5-3 4043 Butte At north border of county. W of Singer Creek and E of Cana/Pine Creek Road. 57 Comment
  CHSC96335  Sidalcea gigantea L. P. Janeway 2006-8-12 8838 Butte Northern High Sierra Nevada. At Concow Road crossing of uppermost Keyser Creek 0.8 km east-northeast of Bald Mountain summit. Open disturbed area between old logging landing and creek. 1682 Comment
  JEPS100685  Sidalcea gigantea Dean W. Taylor 1995-8-6 15380 Butte 3 air mi NE of Stirling City (near Jackass Flat); Plumas National Forest 1219 Comment
  CHSC38551  Sidalcea hartwegii Vernon Oswald 1983-4-18 345 Butte Upper Bidwell Park, Chico, on the north slope slightly e of Horseshoe Lake. 146 Comment
  CHSC61159  Sidalcea hartwegii Vernon H. Oswald 1993-5-18 5397 Butte Middle Butte Creek Trail on the W side of the creek and on the upstream side of Ponderosa Way, ca. 2.25 mi (air) NW of Magalia. 707 Comment
  SEINET11991651  Sidalcea hartwegii Unknown 1976-1 6 Butte 10 yds S of Sky Way Rd, 6 mi E from junction of Hwy 99 & Sky Way Rd 366 Comment
  CHSC1047  Sidalcea hirsuta F. Johnson 1937-5-20 Butte Near old radio transmitter on Madrone St. 57 Comment
  CHSC1061  Sidalcea robusta F. Johnson 1937-5-25 Butte Near Covered Bridge on Butte Creek. 108 Comment
  RSA755645  Sidalcea robusta L. Ahart 2009-5-15 15681 Butte About 10 yards E of the dirt road that is Ten Mile House Road, Upper Bidwell Park, about 3/4 air mile W of Highway 32, about 10 miles NE of Chico. 235 Comment
  RSA88031  Sidalcea robusta C. L. Hitchcock 1952-5-28 19535 Butte Along Paradise-Durham Road about 5 miles south of Paradise Comment
  SEINET9015716  Sidalcea robusta A. A. Heller, H. E. Brown 1902-5-8 5496 Butte Berry Canyon, near Clear Creek. Comment
  CHSC78138  Silene antirrhina Lowell Ahart 2000-5-31 8425 Butte Below the high water line of Lake Oroville, about 400 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 271 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
  CHSC44927  Silene bernardina Lowell Ahart 1988-7-31 6163 Butte On the south side of the road, about 1 air mile north-east of Bald Mountain, about 4 1/2 air miles north-east of Stirling City. 1676 Comment
  CHSC39045  Silene bridgesii R. A. Schlising; K. Tarp 1983-7-22 4428 Butte E part of county, se of Brush Creek along Milsap Bar Road. 975 Comment
  CHSC33521  Silene douglasii R. Schlising 1981-6-28 4114 Butte E of Stirling City and W of Little Kimshew Creek in E part of county; on Table Mountain. 1828 Comment
  CHSC101677  Silene laciniata subsp. californica Lowell Ahart 2009-4-26 15624 Butte South of a small drainage, about 120 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles norhteast of Chico. 286 Comment
  UCD98984  Silene laciniata subsp. californica L. E. Hazeltine 1916-7-16 s.n. Butte Appleton. Comment
  UC120147  Silene lemmonii unknown Butte Jonesville Comment
  CHSC21250  Sinapis arvensis M. S. Taylor 1975-3-25 424 Butte In field between 11th and 12th Aves, at end of Citrus Ave, Chico. Comment
  CHSC484  Sinapis arvensis G. Spurlock 1935-5-20 Butte Chico. Orchards and grainfields. 57 Comment
  CHSC90830  Sisymbrium altissimum Lowell Ahart 2005-5-2 11754 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
  JEPS115623  Sisymbrium officinale Lowell Ahart 2009-5-15 15720 Butte Upper Bidwell Park on the west side of Highway 32, south of the parking area at the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 461 Comment
  CHSC101758  Sisyrinchium bellum Lowell Ahart 2009-5-23 15734 Butte On the east side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 236 Comment
  CHSC46234  Sisyrinchium bellum Pauleen Broyles 1987-7-5 1072 Butte Ca 7 km n. of Inskip on Bull Hill Rd., along Coon Creek. Comment
  RSA4634  Sisyrinchium bellum E. B. Copeland 1930-8-3 409 Butte Jonesville 1500 Comment
  CHSC1934  Solanum americanum V. Holt 1931-6-1 Butte Along Chico Creek near campus. 57 Comment
  CHSC28529  Solanum americanum M. S. Taylor 1979-9-28 2195 Butte Butte County line at Hwy 70, between boundary and Arch Rock tunnel. 487 Comment
  CHSC76346  Solanum rostratum Paul Maslin 1999-7-7 Butte Campus of California State University, Chico; between the Continuing Education building and Big Chico Creek. In flower beds. 59 Comment
  POM193439  Solanum umbelliferum E. B. Copeland 1930-7-27 s.n. Butte Jonesville. 1600 Comment
  POM40827  Solidago californica C. C. Bruce 1897-06 1991 Butte Little Chico Comment
  SEINET10839147  Solidago canadensis subsp. elongata Mary Susan Taylor 1978-7-21 Taylor 1832 Butte On N side of Oroville-Quincy Hwy, in open meadow, ca. 1 mi S of Butte-Plumas County line; Yellow Pine Forest. 1341 Comment
  CDA7651  Soliva sessilis L. Heinricks 1961-5-15 Butte Curry-Bidwell State Park. 0 Comment
  UCD136106  Soliva sessilis W. R. Powell 1968-5-6 1482 Butte 1.8 miles north-northeast of Bangor. 342 Comment
  CHSC107248  Sonchus asper subsp. asper Lowell Ahart 2011-6-3 17359 Butte Wood chipped planter area between Bidwell Mansion parking area and Gateway Science Museum, Chico. Urban. 60 Comment
  CHSC48916  Sorbus scopulina Vernon Oswald 1985-8-4 1921 Butte Humboldt Rd. at Butte Creek Bridge s of Cherry Hill. On the bank of the creek. 1432 Comment
  CAS-BOT-BC235259  Sorghum bicolor John Thomas Howell 1951-8-19 28152 Butte North Fork Feather River 243 Comment
  CHSC22890  Sorghum halepense Robert A. Schlising 1974-10-6 3160 Butte Along Sacramento River in field about .5 mi s of jct Sacramento Road and River Road, along latter. Comment
  CHSC31624  Sorghum halepense L. Ahart 1977-9-8 1563 Butte Near the water hole. Peter Ahart Ranch, Honcut. 50 Comment
  SEINET3125080 Image available Sorghum halepense Richard R. Halse 2006-8-2 6982 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  UC573852  Sorghum halepense H. S. Yates 1936-8-19 6124 Butte 10 mi. s. Durham; Chico Quad. Comment
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Nov 12 2007
  SEINET10594682  Sorghum halepense Prouty 1980-1 PROUTY 80 .97 Butte Along Cherokee Rd., ca. 0.8 mi n of jctn. with Thompson Flat Rd. Comment
  CDA20087  Spartium junceum R. Harrie 2003-1-13 PDR 1280328 Butte Northern California; Old mine site. 0 Comment
  CDA3449  Spergula arvensis subsp. arvensis L. Ahart 2003-6-23 10307 Butte Peter Ahart Ranch, about 1/2 mile east of the Palermo Honcut Highway, about 2 miles north of Honcut, about 12 miles south of Oroville. Comment
  CHSC91098  Spergularia bocconi Lowell Ahart 2005-5-28 11827 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
  JEPS120962  Spergularia bocconi Lowell Ahart 2013-4-20 18563 Butte Corral at the barn, about 1/4 mile N of Honcut Cemetery, about 3.25 air miles NE of Honcut. Comment
  CAS-BOT-BC147950  Spiraea douglasii Lowell Ahart 1983-9-17 4440 Butte About 1/4 mile south-east of Stirling City 1100 Comment
  CAS-BOT-BC149654  Spiraea douglasii A. A. Heller 1914-7-23 11617 Butte In Chico Meadows 1219 Comment
  CHSC11995  Spiraea douglasii E. B. Copeland 1929-7-15 374 Butte Jonesvile. 1500 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
  CHSC42800  Spiraea douglasii L. P. Janeway 1987-6-8 2168 Butte Along French Cr 0.5 mi W of the mouth of Ram Cr and the bridge. 609 Comment
  SEINET10470127  Spiranthes porrifolia Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4204 B Butte T25 N R5E SW 1/4 sec 29. Pulga NW quad. Jones Meadow, ca. 3 mi S of Philbrook Reservoir, ca. 6 mi NE of Stirling City. Montane Meadow. 6000 ft. 1829 Comment
  CHSC45023  Spondias dulcis L. P. Janeway 1988-9-9 Butte Chico; in hort by K. R. Stern 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
  UC1563286  Stachys pycnantha Lowell Ahart 1990-10-3 6615 Butte East Fork of Canyon Creek, below the high water line of Lake Oroville, about 1/4 mi northeast of the Canyon Creek Bridge across Lake Oroville. 259 Comment
  SBBG128189  Stachys pycnantha L. Ahart 2009-8-3 16259 Butte drainage on the E side of Ten Mile House Rd, Upper Bidwell Park, ca. 0.75 mi W of Hwy 32, ca. 10 mi NE of Chico 209 Comment
  CHSC52208  Stachys stricta L. P. Janeway 1988-6-29 2900 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi S of the Skyway, 2.9 mi E of the Butte Cr bridge. 170 Comment
  CAS-BOT-BC175313  Stellaria borealis subsp. sitchana E. B. Copeland 1929-7-1 s.n. Butte Jonesville 1500 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
  RSA739620  Stellaria borealis subsp. sitchana L. P. Janeway, David Toren, Chris Christofferson, Heather Koeth, Duryea Delacroix 2008-6-10 9404 Butte Northern High Sierra Nevada, Plumas National Forest, along Coon Creek about 100m NE of Rogers Cow Camp campground, about 500 m W of Oroville Quincy Hwy. 1234 Comment
  UC1609332  Stellaria crispa Lowell Ahart 1993-7-31 7136 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  SEINET10537600  Stellaria crispa Lowell Ahart, Peter Ahart 1984-7-19 Ahart 4741 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
  CHSC113500  Stellaria longifolia Lowell Ahart 2014-7-13 19649 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10965515  Stellaria longipes Mary Susan Taylor 1981-5-14 Taylor 3729 Butte T23N R6E ne/nw sec 19, Pulga SE quad. E side of 23N30.2, along road and ridge, ca. 1 mi SE of Bear Ranch Hill, ca. 2 air mi NW of Four Trees on Oroville-Quincy Hwy. Yellow Pine Forest; 4900 ft. 1493 Comment
  JEPS122022  Stellaria longipes subsp. longipes Lowell Ahart 2014-7-4 19555 -A Butte Road edge on the south side of Bull Hill Road, about 2 miles south of Butte Meadows. Comment
  CHSC231  Stellaria media M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  SEINET10537521  Stellaria media Mary Susan Taylor 1975-3-25 Taylor 426 Butte Chico. Comment
  CAS-BOT-BC395117  Stellaria nitens Lowell Ahart 1987-5-12 5630 Butte S of Lumpkin Ridge Road, 1.5 miles E of Camp 18, about 8 miles NE of Feather Falls 1280 Comment
  SEINET10537640  Stellaria nitens Lowell Ahart, James D. Jokerst 1985-3-24 Ahart 4862 Butte West of Lunt Road, about 1/2 mile north of the inter- section of Lunt Road and Highway 70, north of Yankee Hill. Comment
  CHSC42486  Stellaria obtusa Lowell Ahart 1987-5-6 5519 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  POM219143  Stellaria obtusa H. F. Copeland 1930-7-21 s.n. Butte Jonesville. Comment
  CAS-BOT-BC398213  Stellaria umbellata Vernon Oswald; Lowell Ahart 1987-7-1 3075 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
  CHSC62437  Stephanomeria paniculata L. P. Janeway 1993-9-3 4579 Butte Plumas National Forest. Along dirt road to Bear Ranch Creek falls from Hwy 70; in canyon of North Fork Feather River. 487 Comment
  SEINET8078260  Stipa lemmonii var. lemmonii R. McKee 1918-5-12 s.n. Butte Magalia. Comment
  SEINET10603897  Stipa lettermanii K. Bridwell 1978-2-28 Bridwell 48 Butte Along Oakway Rd., 5 mi. ENE of Magalia, E of Feather River. Foothill Woodland. 762 Comment
  CDA42907  Stipa miliacea var. miliacea L. Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek, about 20 yards west of the Freeway, Lower Bidwell Park, Chico. Comment
  CHSC109681  Stipa miliacea var. miliacea Lowell Ahart 2012-6-21 18216 Butte On the south side of Big Chico Creek about 20 yards west of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  SEINET10508396  Stipa occidentalis Mary Susan Taylor 1978-7-18 Taylor 1707 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  SEINET10508399  Stipa pulchra Mary Susan Taylor 1979-5-4 Taylor 1997 Butte Along Millsap Bar Road, 4 mi NE of its junction with Brush Creek Road, ca. 26 mi NE of Oroville; Yellow Pine Forest. 1006 Comment
  CHSC113959  Stipa stillmanii Lowell Ahart 2014-7-7 19567 Butte Along the east side of the Skyway, about one mile south of Inskip. 1449 Comment
  JEPS118610  Streptanthus longisiliquus Matt Simenc, Sarah Starkey and Tim Hanson 2010-7-8 s.n. Butte Northern High Sierra Nevada. Along a 2008 wildfire-supression dozer line just southwest of (above) Rim Road (Ponderosa Way) 1.0 road miles southeast of Concow Road, northern end of Rocky Ridge. Pulga 7.5' quad. Comment
  CAS-BOT-BC87433  Streptanthus polygaloides John Thomas Howell; Gordon H. True 1967-6-11 42559 Butte Sierra Nevada. Northeast side of Feather River Canyon near Pulga Bridge. 417 Comment
  CHSC31339  Streptanthus polygaloides K. Bridwell 1978-5-31 129 Butte Ca. 200 yds e of Coutolenc Rd, ca. 3 mi ne of Magalia. 762 Comment
  CHSC54298  Streptanthus polygaloides Vernon H. Oswald; Lowell Ahart 1991-6-5 4648 Butte Dirt road to Minie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 701 Comment
  HSC96693  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte N High Sierra Nevada, NW side of Rim Rd. (Ponderosa Way) at S end of Rocky Ridge and S end of its serpentine openings 847 Comment
  CAS-BOT-BC87434  Streptanthus polygaloides John Thomas Howell; Harvey Keith Wagnon 1980-5-26 53578 Butte Sierra Nevada. Feather River Canyon Highway, 2.4 miles southwest of Pulga Bridge. Comment
  SEINET10448516  Streptanthus polygaloides Mary Susan Taylor 1981-5-15 Taylor 3737 Butte 4000 ft. T22N R5E sene sec 2, Pulga SW quad. At loop in RD 23N00.l, ca. 0.5 mi S of Coyote Gap on Four Trees Rd, ca. 4 air mi E of Pulga on Hwy 70. Serpentine barrens within Yellow Pine Forest. 1219 Comment
  SEINET10448519  Streptanthus polygaloides Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5518 Butte outcrop, 0.6 mi S of Coyote Gap, on open knoll at loop in French Creek Road, ca. 25 air mi NE of Oroville. Comment
  CHSC38054  Streptanthus tortuosus R. E. Preston 1983-5-26 384 Butte Roadside, Hwy 70 ca. 1 3/4 mi SW of Pulga. 548 Comment
  CHSC92591  Streptanthus tortuosus var. orbiculatus L. P. Janeway 2005-6-26 8435 Butte Northern High Sierra Nevada. Open granite ridgetop 0.3 km west of Cedar Creek and 2.6 km north-northwest of the mouth of Cedar Creek at North Fork Feather River. 1295 Comment
  CAS-BOT-BC48060  Styrax redivivus A. A. Heller 1915-5-25 11891 Butte Ridge above Enterprise in the Sierra Nevada. 609 Comment
  CHSC42357  Swertia albicaulis var. nitida Lowell Ahart 1987-5-22 5671 Butte About 1/8 mile southeast of Lumpkin Ridge Road, about 1 1/2 miles east of Camp 18, about 8 miles northeast of Feather Falls. 1280 Comment
  CHSC4613  Swertia albicaulis var. nitida R. Carter 1966-6-15 429 Butte 1.5 mi. S of Big Bald Rock along W side of Bald Rock Rd.; on bank above road. Comment
  CHSC653  Swertia albicaulis var. nitida R. Massey 1931-5-20 Butte Forest Ranch. 548 Comment
  UC878392  Swertia albicaulis var. nitida Helen M. Edwards 1917-6-6 Butte De Sabla Comment
  UC961210  Swertia albicaulis var. nitida Marion Ownbey and Gerald B. Ownbey 1946-6-25 2944 Butte Comment
  CHSC94586  Symphyotrichum bracteolatum Lowell Ahart 2006-9-13 13318 Butte South edge of the North Fork of the Feather River, about 100 yards west of Mill Creek, north side of Highway 70, about 1/8 mile west of the Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  CAS-BOT-BC97689  Symphyotrichum chilense H. E. Brown 1896-9-15 80 Butte near Clear Creek 53 Comment
  CHSC31584  Symphyotrichum chilense Lowell Ahart 1977-9-20 1572 Butte Along the edges of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  SD112376  Symphyotrichum lanceolatum subsp. hesperium Darley F. Howe 1960-9-20 2983 Butte North fork of Feather River Canyon, 8 miles from Oroville 149 Comment
  CHSC65886  Symphyotrichum lanceolatum var. hesperium Vernon H. Oswald 1996-4-20 7401 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacra-mento Valley. 32 Comment
  UC1564747  Symphyotrichum spathulatum V. Oswald and L. Ahart 1989-8-15 3941 Butte ca. 1.2 mi air n of, Soda Ridge Road 1.4 mi w of its junct. w/ Coon Hollow Rd. Philbrook Resevoir 1737 Comment
  CHSC103427  Symphyotrichum subspicatum Lowell Ahart 2009-11-19 16553 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
  SEINET10507799  Taeniatherum asperum Mary Susan Taylor 1980-5-24 Taylor 2741 Butte Peter Ahart Ranch, Honcut. 50 Comment
  CHSC35305  Tamarix gallica R. Ondricek 1977-10-16 Butte Ca. 1 mile from Richardson Springs turnoff on Cohasset Hwy, N of Chico Comment
  RSA715887  Tamarix parviflora L. Ahart 2005-4-2 11697 Butte Overflow area on the E side of the Sacramento River, NW of Parrott Landing. About 1 mile SE of Ord Ferry. About 2 miles SE of Ordbend. About 12 miles (air) SW of Chico. 26 Comment
  CHSC27255  Taraxacum officinale P. Moyer 1972-3-4 102 Butte CSUC Campus. 1st and Hazel under Sycamore tree on lawn. 60 Comment
  CHSC38750  Tauschia hartwegii Vernon Oswald 1983-3-6 126 Butte Upper Bidwell Park, Chico, on the north rim ca. 0.5 mi e of the power lines. 274 Comment
  CHSC62412  Tauschia hartwegii B. Castro 1987-5-18 93 Butte Ca 9 mi E of Chico via Hwy 32 and ca 2 mi E on Altatina Drive. 463 Comment
  JEPS117227  Tauschia hartwegii Lowell Ahart 2010-5-7 16631 Butte On south side of Guardian Trail, about 1/4 mile west of Highway 32, Upper Bidwell Park, about 4 3/4 miles (air) northeast of Chico 301 Comment
  SEINET10454608  Tauschia hartwegii Mary Susan Taylor 1975-3-3 Taylor 404 Butte Dam area, ca. 1/4 mi N of Richardson Springs camp, ca. 8 mi N of Chico. Associates: Umbellularia californica, Nemophila heterophylla, Aristolochia californica, Montia perfoliata. Riparian Woodland. 91 Comment
  CHSC52371  Tellima grandiflora L. P. Janeway 1989-5-17 3253 Butte Along rd to Forbestown Diversion Dam 2.9 mi from Forbestown Rd. Shady cyn with creek flowing n'ly to S Fk Feather River. 792 Comment
  CHSC52196  Thalictrum fendleri var. polycarpum L. P. Janeway 1989-5-11 3232 Butte Along Deadwood Cr at jct of Concow and Jordan Hill Roads. 518 Comment
  CHSC31642  Thysanocarpus curvipes L. Ahart 1975-3-26 722 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  HSC64129  Thysanocarpus curvipes J. P. Smith 1973-3-22 5921 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  SJSU15298  Thysanocarpus curvipes Lisa Morton 2002-3-30 12 Butte Upper Bidwell Park, along N, Rim Trail at top of butte. 80 Comment
  CHSC35005  Thysanocarpus curvipes var. elegans R. E. Preston 1979-4-22 19 Butte On bank of small creek, on North Table Mountain. N of Cherokee Rd, 5 mi n of Oroville. 365 Comment
  CHSC93487  Thysanocarpus curvipes var. elegans Lowell Ahart 2006-5-8 12608 Butte North of Phantom Falls, about 3/4 mile northwest of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 384 Comment
  CHSC4139  Thysanocarpus radians R. Carter 1966-4-9 328 Butte Found ca. 6 mi. E of Oroville; 500 yds. NE of small reservoir at intersection of Olive Hwy. and Miners Ranch Rd. 243 Comment
  UCR228716  Thysanocarpus radians Charles Hughes 2008-3-18 021 Butte Oroville, west of 6th Street between Nelson Avenue School and baseball fields 105 Comment
  SEINET10971075  Tofieldia glutinosa Mary Susan Taylor 1977-7-15 Taylor 1408 Butte Butte Meadows, ca. 20 mi NE of Chico off Hwy 32. 1326 Comment
  JEPS105914  Tofieldia occidentalis subsp. occidentalis Lowell Ahart 2004-8-2 11322 Butte Large bog, the start of a small branch of Keyser Creek, on the south side of the dirt County Road, about 1/4 mile (air) east of Bald Mountain, about 4 miles (air) northeast of Stirling City 1689 Comment
  UCD128154  Torilis arvensis T. C. Fuller 1967-6-27 16033 Butte north side of Durham Highway, 1.1 miles west of Highway 99, 0.2 mile eas of Hamlin Roadm Durham. Comment
  CHSC45887  Torilis arvensis subsp. purpurea Lowell Ahart 1976-5-21 1118 Butte Along North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC99015  Torilis arvensis subsp. purpurea Lowell Ahart 2008-5-21 14766 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</