Search Results — 2000 specimen records retrieved (1607 records with coordinates)
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 Please cite data retrieved from this page: Data provided by the participants of the Consortium of California Herbaria (ucjeps.berkeley.edu/cch_archive/).
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? Specimen ID Determination * Collector Collection Date Collection Number County Locality Elevation in meters Feedback
  CHSC3157  Abelia chinensis Gary Dutton 1966-5-9 278 Butte Found on C.S.C. north-east side of Science Bld. Comment
  POM220653  Abies magnifica H. F. Copeland 1928-8-29 331 Butte Near Jonesville. Summit of Humboldt Road. 2134 Comment
  LA204381  Acer glabrum var. glabrum E. B. Copeland; 1930-6-28 423 Butte Jonesville 1500.0 Comment
  POM85245  Acer macrophyllum C. C. Bruce 1897-04 1790 Butte Little Chico. Comment
  CHSC7127  Acer negundo var. californicum Lynn R. Thomas 1969-3-23 15 Butte N bank Big Chico Creek at junction of Stewart and Bidwell Ave., ca. 0.5 mi w of Chico. 60 Comment
  CDA43100  Acer saccharinum L. P. Janeway 2013-3-19 11085 Butte Sacramento Valley.; North slope of levee on south side of Feather River, Oroville; opposite (north of) the north end of 2nd Ave and Rotary Park. Comment
  CHSC5957  Acer saccharinum M. MacArthur 1968-6-17 172 Butte SW side of Big Chico Creek ca. 50 ft. NE of Dining Hall, Chico State College campus. 60 Comment
  CHSC109562  Achillea millefolium L. P. Janeway 2012-6-23 10891 Butte Northern High Sierra Nevada. Southwest spur of Rocky Ridge, 0.6 air km south of Batchelor Point; along Road 23Np6E 0.8 road km southeast of Rim Road/Ponderosa Way. 895 Comment
  CHSC38315  Achillea millefolium Vernon Oswald 1983-5-14 483 Butte Upper Bidwell Park, Chico, on the north rim ca. 1.5 mi e of the power lines. 353 Comment
  JEPS117291  Achillea millefolium Lowell Ahart 2010-9-21 17216 Butte About 70 yards east of the poor dirt road, about 80 yards west of Big Kimshew Creek, about 1 1/2 miles (air)northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir 1917 Comment
  CAS-BOT-BC210631  Achnatherum lemmonii Lowell Ahart 1983-6-15 4054 Butte Along edges of Honcut Creek. Peter Ahart Ranch, ca. 1.5 mi. N and 3 mi. E of Honcut 50 Comment
  CHSC27659  Achnatherum lemmonii Robert A. Schlising 1978-4-23 3229 Butte Magalia; just S of the Magalia Reservoir (just W of S. T. RR and Coutelenc Road). Comment
  CHSC42933  Achnatherum lemmonii Lowell Ahart 1987-7-8 5793 Butte Along Big Bar Mountain Road, about 3 miles south-west of Coyote Gap, south-east of Pulga. 1280 Comment
  CHSC95032  Achnatherum lemmonii L. P. Janeway 2006-6-25 8701 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
  JEPS116096  Achnatherum lemmonii Lowell Ahart 2009-5-15 15686 Butte On the east side of Big Chico Creek, about 50 yards west of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 203 Comment
  CAS-BOT-BC217019  Achnatherum occidentale M. S. Taylor 1978-7-18 1707 Butte On top of Humboldt Peak at Humboldt Summmit 2158 Comment
  UC600786  Achnatherum occidentale subsp. californicum E. B. Copeland July 1929 Butte yellow pine woods Jonesville 1600 Comment
  CAS-BOT-BC29945  Achyrachaena mollis A. A. Heller 1914-4-11 11277 Butte 8 miles north of Oroville Comment
  CHSC105272  Achyrachaena mollis Lowell Ahart 2010-6-20 16822 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
  CHSC23474  Achyrachaena mollis A. R. Morrison 1974-4-18 Butte Ca. 5 mi e of Hwy 99 on Pentz road. Comment
  CHSC2432  Achyrachaena mollis R. Carter 1965-5-13 199 Butte Found ca. 7.5 mi. E of Oroville at 6120 W.S.R., ca. 60 yds due E of garage. 274 Comment
  UCD103795  Acmispon americanus var. americanus A. A. Heller 1914-7-23 11615 Butte Chico Meadows. 1219 Comment
  CAS-BOT-BC204848  Acmispon argophyllus var. fremontii Lowell Ahart 1987-5-9 5600 Butte Along Pulga Road, about 1 mile south-west of Bardees Bar along the North Fork of the Feather River, abou 3 1/2 miles south-west of Pulga 365 Comment
  CHSC78146  Acmispon brachycarpus Lowell Ahart 2000-5-31 8424 Butte A serpentine ridge, about 200 yards east of where Kunkle Creek enters Lake Oroville, east of the Kunkle Power House, about 3 miles southeast of Paradise. 335 Comment
  JEPS127022  Acmispon brachycarpus Lowell Ahart 2016-6-4 20921 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. Comment
  CHSC33561  Acmispon grandiflorus var. macranthus M. S. Taylor 1981-5-4 3593 Butte SW of 21N80, s side of spur rd near plantation, ridge south of Galen Ridge, sa. 3 mi sw of Brush Creek. 914 Comment
  CHSC44394  Acmispon nevadensis Lowell Ahart 1988-6-29 6088 Butte East of Galen Ridge Road, about 1/2 mile east of the Oroville Quincy Highway, north of Lake Madrone. 621 Comment
  CHSC99327  Acmispon nevadensis var. nevadensis Lowell Ahart 2008-5-12 14729 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 40 yards east of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  CHSC108831  Acmispon strigosus Lowell Ahart 2012-4-17 17878 Butte Bare areas where cobbles were removed for Oroville Dam, about 200 yards southeast of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  CHSC50669  Acmispon wrangelianus Lowell Ahart 1990-4-8 6443 Butte On the east side of Pacific Heights Road, about 3 1/2 miles south-west of Oroville. 33 Comment
  CAS-BOT-BC412865  Aconogonon davisiae E. B. Copeland 1929-7-17 s.n. Butte Above Jonesville 2000 Comment
  CHSC45382  Aconogonon phytolaccifolium Vernon Oswald 1984-7-31 1630 Butte N. side of Butte Creek ca. 0.25 mi w of Humboldt Rd. near Cherry Hill. One plant on a stony gravel bar of the creek. 1402 Comment
  CHSC36077  Actaea rubra R. A. Schlising 1982-6-10 4292 Butte N of Paradise and Magalia at old Powellton site; forest along Kanaka Creek. 1097 Comment
  SEINET10573363  Actaea rubra R. M. Austin Austin 275 Butte Comment
  UC444992  Actaea rubra E. B. Copeland June, 1930 Butte woods near Butte Creek Jonesville 1550 Comment
  UC2026864  Actinidia arguta Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-28 18232 Butte On the northeast side of Sycamore Pool, Lower Bidwell Park, Chico. Comment
  CHSC20256  Adiantum aleuticum G. S. Ellmore 1972-4-20 136 Butte On Humbug Road ca. 13 km. Ne of Covered Bridge ca. 30 m. e of roadside. Comment
  CHSC50538  Adiantum aleuticum Vernon Oswald; Lowell Ahart 1990-6-20 4308 Butte South side of Philbrook Creek, ca. 0.5 mi west of the Butte-Plumas county line, between Philbrook Reservoir and Carr Mine. 1981 Comment
  CHSC39549  Adiantum capillus-veneris Lowell Ahart 1983-7-29 4236 Butte About 1/2 mile east of Milsap Bar, about 25 miles north-east of Oroville. 500 Comment
  SEINET10867068  Adiantum jordanii Mary Susan Taylor 1979-3-20 Taylor 1942 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10966247  Adiantum jordanii Mary Susan Taylor 1976-4-4 Taylor 1059 Butte Yellow Pine Forest, ca. 2-5 mi W of junction of Ponderosa Way and Hwy 32, ca. 2-10 ft N and S of Ponderosa Way, ca. 23 mi NE of Chico; with Sanicula bipinnata, Calochortus monophyllus. 488 Comment
  CHSC5988  Agapanthus africanus M. MacArthur 1968-6-12 136 Butte Ca. 50 ft. NW of Biology Stockroom in Life Science Bld., Chico State College campus, Chico. 60 Comment
  CAS-BOT-BC29617  Agoseris grandiflora var. grandiflora A. A. Heller 1917-7-26 12834 Butte Butte Meadows 1402 Comment
  CHSC42475  Agoseris heterophylla Lowell Ahart 1987-5-12 5636 Butte South of Lumpkin Ridge Road, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. 1280 Comment
  CHSC50642  Agoseris heterophylla Lowell Ahart 1990-6-16 6509 Butte On the south side of the dirt road, just south of the Forbestown Generator, on the south side of the Forbestown Reservoir. 487 Comment
  CHSC32364  Agoseris retrorsa J. D. Jokerst 1980-4-7 564 Butte E of the junction of Upper Rocky Honcut Cr and Sweedes Flat Rd. ca 110 m E of the road. Comment
  CHSC117594  Agrostis capillaris B. Castro; Melinda Carlson 2007-10-25 1681 Butte Sacramento Valley. Confluence of Big Chico Creek and Sacramento River, W of River Road and north of the creek within surrounding disturbed riparian forest. Arroyo Chico land grant area. 39 Comment
  CHSC78352  Agrostis elliottiana Lowell Ahart 2000-6-27 8531 Butte On the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 1 1/4 mile northeast of Big Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  CAS-BOT-BC127337  Agrostis exarata Lowell Ahart 1977-7-8 1522 Butte Peter Ahart Ranch, Honcut. On the edge of North Honcut Creek. 50 Comment
  CHSC113411  Agrostis exarata Lowell Ahart 2014-7-10 19640 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  SEINET10507082  Agrostis exarata Mary Susan Taylor 1977-8-17 Taylor 1497 Butte Scattered in Montane Meadow on S side of Humbug Rd, ca. 1 mi N of Snag Lake. 1829 Comment
  CHSC31728  Agrostis exarata var. monolepis L. Ahart 1977-6-16 1421 Butte In a small wash that drains into North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  POM183177  Agrostis idahoensis H. F. Copeland 1930-7-25 1340 Butte Jonesville. 1524 Comment
  SEINET10507107  Agrostis microphylla Mary Susan Taylor 1980-5-27 Taylor 2710 Butte T21N R6E nw sec 29. Big Bend quad. Little Bald Rock, ca. 3 mi S of Brush Creek; granitic dome within Yellow Pine Forest. 1016 Comment
  UC203844  Agrostis scabra A. A. Heller 1914-7-23 11613 Butte Chico Meadows 1219 Comment
  UC392237  Agrostis scabra E. B. Copeland Jul 1929 Butte Jonesville 1550 Comment
  UC573807  Agrostis scabra H. S. Yates 1936-8-13 6099 Butte Butte Meadow Paynes Creek Quad. 1341 Comment
  CHSC91470  Agrostis stolonifera Lowell Ahart 2005-7-13 12150 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  CHSC101656  Aira caryophyllea Lowell Ahart 2009-4-26 15616 Butte About 10 miles northeast of Chico, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 150 yards southwest of Ten Mile House Road, on south edge of a small open meadow.. 286 Comment
  SEINET11688666  Aira caryophyllea T. B. Devine 1980-1 673 Butte on cliffs next to Skyway ca 10 mi E of Chico Comment
  JEPS98406  Aira elegantissima Lowell Ahart 2000-5-17 8363 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
  CHSC100052  Albizia julibrissin Lowell Ahart 2008-7-11 15070 Butte On the west side of a small wet area, about 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 31 Comment
  JEPS127629  Alisma lanceolatum B. Castro 2008-7-15 1760 Butte Ca 2.5 mi W of Hwy 99 and 1.1 mi SE of Richvale, and ca 0.5 mi E of the Midway. Near junction of Cherokee Canal, Southern Pacific RR and the Biggs extension canal. Comment
  CHSC76010  Alisma triviale Lowell Ahart; Vernon H. Oswald 1999-8-13 8138 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
  CHSC96091  Alisma triviale L. P. Janeway 2006-7-19 8817 Butte Sacramento Valley. Waterfowl brood pond on shallow arm of Thermalito Afterbay, 225 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CAS-BOT-BC460736  Allium amplectens Lowell Ahart 1980-5-27 2354 Butte Peter Ahart Ranch, Honcut. 50 Comment
  SEINET8112102  Allium amplectens K. Conger 1907-1 s.n. Butte Brush Creek. Comment
  CAS-BOT-BC466716  Allium cratericola C. C., Mrs. Bruce 1899-1-1 1901 Butte Doe Mill Comment
  SEINET12046120  Allium cratericola Unknown 1978-1 8 Butte N side Cherokee Rd., ca 5.8 mi E jct Hwy. 70 and Cherokee Rd., 12.5 mi N Oroville. Oroville Quadra 396 Comment
  UCD141836  Allium cratericola L. K. Mann 1959-4-12 s.n. Butte Table Mountain, East of Chico near Cherokee. Comment
  CAS-BOT-BC472971  Allium membranaceum Lewis S. Rose 1937-6-10 37371 Butte Forbestown 838 Comment
  SEINET10471990  Allium peninsulare Lowell Ahart 1985-5-15 Ahart 5003 Butte 1/8 mile east of the dirt road, about 1 1/2 miles north-east of Concow of Reservoir. 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
  SEINET12048118  Allium sanbornii M. Ownbey, Ownbey, G. B. 1946-1 2948 Butte Hwy. 24, 21 mi NE of Oroville, just beyond Yankee Hill Rd Comment
  CAS-BOT-BC475451  Allium serra A. A. Heller 1902-5-13 5538 Butte Grade between Clear Creek and Paradise Comment
  CHSC45441  Allophyllum divaricatum Lowell Ahart 1984-6-8 4673 Butte Along the dirt road near the water tower that is above the generator, about 2 miles north of Forbestown, about 1 mile east of the Ponderosa Dam. 457 Comment
  UC1586630  Allophyllum divaricatum Lowell Ahart 1991-6-22 6662 Butte n. of Springtown Rd. Lake Oroville 243 Comment
  SEINET10969173  Allophyllum divaricatum Lowell Ahart 1984-6-8 Ahart 4673 Butte At the Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  UC398943  Allophyllum integrifolium E. B. Copeland 1929-7-29 393 Butte Jonesville Comment
  UC203870  Alnus incana subsp. tenuifolia A. A. Heller 1914-7-24 11622 Butte Butte Creek Sierra Nevada, Butte Meadows (banks) 1219 Comment
  CAS-BOT-BC138035  Alopecurus carolinianus Lowell Ahart 1982-5-10 3430 Butte Sierra Nevada. On the floor of Ahart rice field, Peter Ahart Ranch, 2.25 miles north and 0.25 mile east of Honcut. 50 Comment
  UCD55880  Alopecurus carolinianus L. Ahart 1982-5-10 3430 Butte Peter Ahart Ranch, ca. 2 mi northeast of Honcut. 50 Comment
  CHSC103737  Alopecurus saccatus Lowell Ahart 2010-5-16 16691 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville. 371 Comment
  CHSC47604  Alopecurus saccatus Lowell Ahart 1980-5-4 2169 Butte South-west of the intersection of Nelson Ave. and 20th Street in Thermalito. 60 Comment
  SBBG128584  Alopecurus saccatus L. Ahart 2010-5-16 16691 Butte bottom of vernal pools, ca. 0.25 mi S of parking area, N Table Mtn, ca. 4.5 mi (air) NE of Oroville 371 Comment
  CHSC90812  Alyssum desertorum Lowell Ahart 2005-5-2 11763 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
  CHSC116126  Amaranthus albus Lowell Ahart 2015-11-7 20615 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
  CHSC51344  Amaranthus californicus Vernon Oswald 1990-8-14 4431 Butte West Branch of Lake Oroville, Vinon Gulch access, 0.5 mi north of Cherokee. Occasional on and along the track below the lower end of the paved launching ramp. 259 Comment
  UC1609225  Amaranthus palmeri Lowell Ahart 1993-10-4 7270 Butte about 0.1 mi e Durham (about 0.1 mi w of Butte Creek, along the n side of Durham Pentz Road) 48 Comment
  CHSC43584  Amaranthus rudis Vernon Oswald 1987-6-12 2990 Butte East side of Sacramento River just n of Golden State Island (perhaps technically in Glenn County because of shifting channel). 33 Comment
  CHSC97722  Ambrosia psilostachya Lowell Ahart 2007-10-30 14509 Butte On the south side of the water ditch, on the north side of Lower Wyandotte Road, about 2 1/2 miles (air) northeast of Palermo, about 4 1/4 miles (air) southeast of Oroville. 129 Comment
  CAS-BOT-BC142903  Amelanchier A. A. Heller 1939-4-26 15383 Butte Edge of thickets near the Feather River at the foot of the grade leading down from Stirling City Comment
  CAS-BOT-BC142956  Amelanchier utahensis Lowell Ahart; Vernon Oswald 1987-8-5 3193 Butte Scotts John Creek 1.3 mi n of the road connecting Humboldt and Humbug Roads 1813 Comment
  SD241892  Ammannia coccinea Lowell Ahart 2003-6-23 10 300 Butte Peter Ahart Ranch, about 300 yards east of Palermo Honcut Highway, about 2 1/8 miles north of Honcut, about 12 miles south of Oroville. 29 Comment
  JEPS95918  Ammannia robusta Lowell Ahart 1999-8-13 8168 Butte northwest of Parrott Landing; about 1 mile southeast of Ord Ferry; about 2 miles southeast of Ordbend; about 12 miles (air) southwest of Chico 32 Comment
  CHSC46546  Ammi visnaga Vernon H. Oswald 1989-7-11 3840 Butte Rancho Aguas Frias. Aguas Frias Rd between Nelson and Grainland roads, just s of the Western Canal. 30 Comment
  CHSC46818  Amsinckia eastwoodiae R. A. Schlising 1985-4-8 4461 Butte West of Table Mt., along Table Mt. Blvd., NW of crossing of Campbell Creek. Comment
  CHSC61713  Amsinckia eastwoodiae David E. Young 1983-3-20 5 Butte 23 m w of Humboldt Rd. and 4 km e of Chico, .8 km n of Little Chico Creek. 99 Comment
  UC726069  Amsinckia eastwoodiae A. A. Heller 1941-3-16 15888 Butte near Pentz (along grain field near the junction of the Cherokee Road with Paradise-Stirling City Road, opposite Cattle Corral) Comment
  CHSC3188  Amsinckia intermedia Dona Kingsford 1966-3-3 Butte 1.3 miles south west of Hooker Oak Tree in a dry open field, Chico. Comment
  JEPS108850  Amsinckia intermedia Lowell Ahart 2006-5-8 12599 Butte Steep bank on the east side of a small stream, about 50 yards east of the fence and reservoir, about 2 1/4 miles west of the parking area, cow chute, and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville 296 Comment
  UC1586573  Anaphalis margaritacea Lowell Ahart 1991-8-25 6710 Butte n side of, 5 mi e of hwy 70 Four Trees Road; Mill Creek 1066 Comment
  CHSC30775  Angelica californica M. S. Taylor 1980-9-12 3335 Butte W side of Hwy 32, ca. 3 mi n of Forest Ranch, near Forest Ranch Fire Control Station, ca. 5 minute walk w from the Hwy down a dirt rd. 975 Comment
  CAS-BOT-BC84693  Anthemis cotula Grace Kermode 1899-6-9 s.n. Butte Big Chico Creek Comment
  CHSC61529  Anthoxanthum odoratum Lowell Ahart 1993-6-26 7013 Butte About 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CHSC48967  Antirrhinum leptaleum Vernon Oswald 1985-6-26 1868 Butte West side of Forbestown Rd. ca. 200 ft s of Black Bart Rd. 743 Comment
  CHSC71263  Antirrhinum leptaleum Lowell Ahart 1998-7-1 8032 Butte 20 yards north of the poor east west fence, about 1/2 mile northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CHSC28432  Antirrhinum vexillo-calyculatum subsp. intermedium M. S. Taylor 1979-10-5 2230 Butte On se side of Paradise Lake, ca 1/2 mi n of Coutolenc Rd., ca. 5 mi n of Magalia. 731 Comment
  CHSC40404  Aphyllon epigalium subsp. epigalium Ahart; Jokerst 1985-5-10 4961 Butte On the high bank on the south side of the dirt road, 1/2 mile east of Potter Ravine, south of the east branch of Potter Ravine, 2 1/2 miles north-east of Oroville Dam. 320 Comment
  CHSC106235  Apocynum cannabinum L. P. Janeway 2010-8-21 10171 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; northeast end of Upper Park Road, northwest side of Big Chico Creek. On a gravel bar. 204 Comment
  CHSC55470  Apocynum cannabinum L. P. Janeway 1991-6-8 3997 Butte Crest between Montgomery Bar Ravine, Oregon Gulch and the head of Spring Hollow. 411 Comment
  JEPS115883  Apocynum cannabinum Lowell Ahart 2009-6-19 15925 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
  CAS-BOT-BC392113  Aquilegia formosa Helen M. Edwards 1917-6-6 s.n. Butte De Sabla Comment
  SEINET10536201  Aquilegia formosa Mary Susan Taylor 1978-7-21 Taylor 1802 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  POM149785  Aquilegia formosa var. truncata Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. 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
  RSA4434  Arabis platysperma E. B. Copeland 1931-6-19 643 Butte Jonesville. 1550 Comment
  SEINET10873873  Aralia californica Mary Susan Taylor 1977-7-15 Taylor 1421 Butte Along West Branch of the Feather River, ca. 1 mi E of the Skyway, ca. 1 mi N of Magalia. Riparian Woodland. 678 Comment
  CHSC3022  Arbutus unedo Carl Pejsa 1958-4-19 14 Butte Bidwell Park Forestry Station. Comment
  CAS-BOT-BC410080  Arceuthobium occidentale A. A. Heller 1913-10-1 11144 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC19715  Arceuthobium occidentale Lowell Ahart 1974-11-4 670 Butte Pine tree was growing along the edge of Noth Honcut Creek. Peter Ahart Ranch, Honcut, Calif. 45 Comment
  SEINET10492825  Arceuthobium occidentale Mary Susan Taylor 1979-3-20 Taylor 1953 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  CAS-BOT-BC24410  Arctostaphylos manzanita subsp. manzanita John Thomas Howell 1976-4-2 51568 Butte About 2 mi. from Paradise on Skyway to Chico. 396 Comment
  CAS-BOT-BC24412  Arctostaphylos manzanita subsp. manzanita Walter Knight; Irja Knight 1968-3-7 2279 Butte 1/4 mi. down Pentz Rd. from hwy 70. Comment
  UCD52218  Arctostaphylos manzanita subsp. roofii James I. Mallory 1968-12-3 347 Butte Cohasset Ridge; 2 miles north-northwest of Richardson Springs. 518 Comment
  UCD52296  Arctostaphylos mewukka James I. Mallory 1968-6-12 290 Butte 4 miles south of Brush Creek Ranger Station; Plumas National Forest. 640 Comment
  CHSC108844  Arctostaphylos mewukka subsp. mewukka Lowell Ahart 2012-2-22 17751 Butte On the high bank, on the south side of Ten Mile House Road, about 1/2 mile west of Highway 32, about 9 miles (air)northeast of Chico. 335 Comment
  JEPS117428  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
  CAS-BOT-BC38569  Arctostaphylos mewukka subsp. truei A. A. Heller 1940-2-24 15505 Butte On the Humboldt Road 0.5 mi. w. of the Ten Mile House site. Comment
  JEPS109967  Arctostaphylos mewukka subsp. truei Dean W. Taylor 2006-7-12 19564 Butte Swain Hill; northwest flank along County Road 47 1158 Comment
  SD147589  Arctostaphylos mewukka subsp. truei John Thomas Howell 1976-4-2 51569 Butte Paradise. 609 Comment
  SEINET10973491  Arctostaphylos nevadensis Mary Susan Taylor 1980-8-2 Taylor 3207 Butte T27N R5E center sec 32, Jonesville quad. Humboldt Peak, N tip of the county. 2155 Comment
  RSA31744  Arctostaphylos patula A. A. Heller 1941-2-12 15875 Butte Along the Neal Road, a 1/2 mile West of Optimo Lodge. Comment
  UCD51951  Arctostaphylos truei John Thomas Howell 1975-6-15 51112 Butte 609 Comment
  UCD52817  Arctostaphylos viscida John Thomas Howell 1975-6-15 51084 Butte In Upper Sonoran Zone of volcanic rock, about 2 miles from Paradise on 'Skyway' to Chico, Butte County. 396 Comment
  CAS-BOT-BC47379  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51101 Butte about 2 miles from Paradise on Skyway to Chico 396 Comment
  CAS-BOT-BC48296  Arctostaphylos viscida subsp. viscida John Thomas Howell 1975-6-15 51083 Butte About 2 miles from Paradise on Skyway to Chico. 396 Comment
  CHSC38436  Arctostaphylos viscida subsp. viscida Vernon Oswald 1983-2-14 70 Butte Upper Bidwell Park, Chico, on the S side of Upper Park Rd. just e of the intermittent stream located 0.8 mi E of the power lines. 115 Comment
  CHSC590  Arctostaphylos viscida subsp. viscida L. Stone 1930-3-30 Butte Near Forest Ranch. 548 Comment
  RSA795338  Arctostaphylos viscida subsp. viscida L. Ahart 2010-7-27 16912 Butte About 100 yards southwest of the intersection of Forbestown Road and Black Bart Road, about 11 miles east of Oroville. 742 Comment
  SEINET10512738  Aristida oligantha Mary Susan Taylor 1977-8-16 Taylor 1434 Butte On S side of Pentz Rd, near culvert in natural drainage, ca 1.2 e of jct of Pentz Rd & Hwy 99, ca 15 mi S of Chico. 61 Comment
  CAS-BOT-BC146312  Aristida ternipes var. gentilis Lowell Ahart 1986-11-14 5466 Butte About 0.1 mile south of the clay burrow for Oroville Dam, 0.25 mile east of Larkin Road, about 6 miles southwest of Oroville. 36 Comment
  CHSC51054  Aristolochia californica 1987-4-29 1013 Butte Nature Conservancy Vina Plains Preserve, Wurlitzer Addition. Comment
  RSA416042  Aristolochia californica M. Vincent 1961-3-30 26 Butte Honeyrun road, 1/2 mile west of Paradise 579 Comment
  SEINET10475903  Aristolochia californica Mary Susan Taylor 1979-3-20 Taylor 1951 Butte T21N R4E nw1/4 sec. 21. Cherokee Quad. Along old road on N side of Hwy 70 following West Branch of the Feather River, which begins at S side of bridge over N fork of Feather River, ca. 10 mi N of Oroville; limestone outcrops within Foothill Woodland. 305 Comment
  SEINET10971029  Aristolochia californica Mary Susan Taylor 1973-1 Taylor 35 Butte Upper Bidwell Park, Chico. Associates: Stipa pulchra, Lasthenia chrysostoma, Layia fremontii. 61 Comment
  UC832874  Arnica dealbata A. A. Heller 1914-6-22 11505 Butte edge of the forest about Chico Meadows Chico Meadows 1219 Comment
  UC832875  Arnica dealbata A. A. Heller 1917-7-29 12861 Butte summit above Jonesville 2133 Comment
  RSA32335  Arnica dealbata Clarence R. Quick 1945-7-17 45 -57 Butte Big Bar Mt Plumas n.7. Comment
  RSA32828  Asarum hartwegii A. A. Heller 1939-4-10 s.n. Butte Shaded places in leafy mold on a slope in the oak belt of the transition zone near its lower limits Comment
  CHSC101158  Asclepias cordifolia Lowell Ahart 2009-5-15 15672 Butte About 80 yards west of the dirt road which isTen Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico. 271 Comment
  SEINET10903038  Asclepias cordifolia Lowell Ahart 1985-6-17 Ahart 5063 Butte Lumpkin Ridge, 1 1/2 miles east of Camp 18, about 8 miles north-east of Feather Falls. Comment
  CHSC38264  Asclepias fascicularis Vernon Oswald 1983-6-20 719 Butte Upper Bidwell Park, Chico, near Diversion Dam Parking Area L. 128 Comment
  HSC100821  Asclepias fascicularis Lowell Ahart 2011-8-17 17629 Butte Near drainage below dam, ~100 yd. W of the table at the old homestead and SW of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. SW of intersection of Hwy. 32 and Ten Mile House Rd., 10 mi. NE of Chico. 240 Comment
  JEPS49973  Asclepias fascicularis H. A. Dutton 1921-1-1 Butte e Chico (Hooker Oak) Comment
  POM180847  Asclepias fascicularis H. F. Copeland 1923-7-9 s.n. Butte Mud Creek Ranch Comment
  CAS-BOT-BC65850  Aspidotis carlotta-halliae M. S. Taylor 1979-3-19 1927 Butte In vicinity of Pulga bridge over Feather River on Hwy 70, ca. 25 mi ne of Oroville 487 Comment
  SEINET11716730  Aspidotis densa M. S. Taylor 1980-1 2373 A Butte ca 100 ft SW of Pulga bridge over Hwy 70, ca 28 mi NE of Oroville 488 Comment
  SEINET10473397  Aster Mary Susan Taylor Taylor 985 Butte Bidwell Park, Chico. Comment
  POM180851  Aster subulatus var. parviflorus H. F. Copeland 1923-1 866 Butte Nelson Comment
  CAS-BOT-BC192801  Astragalus pauperculus A. A. Heller 1938-4-3 15013 Butte Summit of Table Mountain 304 Comment
  SEINET10452232  Astragalus pauperculus Mary Susan Taylor 1984-4-6 Taylor 5410 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  CHSC46264  Astragalus tener var. ferrisiae Vernon Oswald 1989-5-1 3753 Butte Butte Sink Wildlife Area (w portion of Schohr Ranch), just e of Butte Creek ca. 0.6 mi s of Biggs-Afton Hwy. 18 Comment
  CHSC58265  Astragalus tener var. ferrisiae Lowell Ahart 1992-5-23 6770 Butte On the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  JEPS117932  Athyrium filix-femina L. P. Janeway 2008-8-10 9538 Butte along Four trees Road crossing of South Branch Mill Creek, 4.5 road km east-southeast of Hwy 70 Northern High Sierra Nevada 823 Comment
  CAS-BOT-BC68686  Athyrium filix-femina var. californicum Lowell Ahart 1981-9-15 3153 Butte Sierra Nevada - One hald mile N of the Lost Creek Reservoir 1100 Comment
  CHSC33576  Athyrium filix-femina var. cyclosorum M. S. Taylor 1981-4-16 3545 Butte Near 21N31Y, ca. 2 mi n of Big Bald Rock, ca. 1 mi se of Brush Creek on Oroville-Quincy Hwy. 1036 Comment
  CHSC42387  Athyrium filix-femina var. cyclosorum Lowell Ahart 1987-6-9 5734 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC69103  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-8-1 7765 Butte On the east side of Little Kimshew Creek, where the basalt is eight sided, Snow Meadow, about 1/4 mile east of Table Mountain, about 8 miles (air) northeast of Stirling City. 1524 Comment
  CHSC69712  Athyrium filix-femina var. cyclosorum Lowell Ahart 1997-10-20 7930 Butte 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
  CHSC47379  Athysanus pusillus Lowell Ahart 1973-3-7 161 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
  CHSC46869  Atriplex heterosperma Vernon Oswald 1989-9-6 3988 Butte Gray Lodge Wildlife Area just w of Parking Area 2. 19 Comment
  SEINET11935015  Atriplex serenana Unknown 1981-1 3218 Butte Near entrance to Graylodge Waterfowl Mgmt HQ, just W of Pennington Rd, ca 12 mi SW of Gridley 35 Comment
  CHSC34769  Atriplex triangularis L. Ahart 1981-11-6 3221 Butte On sides of a deep ditch, on n side of rd near the entrance to Graylodge Waterfowl Mgmt HQ, just w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC48287  Atriplex triangularis Vernon Oswald 1983-10-10 1077 Butte Indian Fishery, Bidwell River State Park w of Chico at the jct. of W. Sacramento Ave. and River Rd. Comment
  CAS-BOT-BC146179  Avena barbata Lowell Ahart 1979-5-12 s.n. Butte Honcut. Peter Ahart Ranch. Along North Honcut Creek. 50 Comment
  CHSC38788  Avena barbata Vernon Oswald 1982-12-19 29 Butte Bidwell Park, Chico, on the north rim ca 1 mi e of the power lines. 335 Comment
  CHSC4416  Avena fatua J. Francis 1966-5-9 Butte Vacant lot at intersection of Arcadian and Mansion Ave., Chico. Comment
  JEPS111348  Azolla filiculoides R. V. Lansdown 2007-4-27 Butte Oroville Wildlife Area, W of Oroville. Complex of deep basins around the car park on the northern margin of the Wildlife Area. Comment
  JEPS124281  Azolla filiculoides Lowell Ahart 2015-11-18 20652 Butte About 2 miles southeast of intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. Comment
  CAS-BOT-BC66254  Azolla mexicana M. S. Taylor; L. Ahart 1982-10-11 5162 Butte Pennington quad. Graylodge Wildlife Refuge, m side of Rutherford Rd, ca. 1/2 mi e of Pennington Rd, 21 Comment
  CHSC89489  Baccharis pilularis R. D. Fischer 2004-8-22 441 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 gated end of park property. At edge of large mdw. 217 Comment
  JEPS102322  Baccharis pilularis Lowell Ahart 2000-11-4 8715 Butte 1 mi N of West Branch Bridge (Hwy 70) across Lake Oroville (E side of hwy, 1 mi N of bridge, 50 yds. N of Rich Gulch Rd.) 335 Comment
  SEINET7239573 Image available Baccharis pilularis R. McKee 1919-10-20 s.n. Butte Chico Comment
  SEINET10839232  Baccharis pilularis subsp. consanguinea Lowell Ahart 1985-2-17 Ahart 4838 Butte On red rocky damp soil near Kunkle Res., About 2 miles south of Paradise. Comment
  POM219304  Balsamorhiza sagittata H. F. Copeland 1931-6-11 1510 Butte Jonesville, above Butte Creek Meadows 1829 Comment
  CHSC42511  Barbarea orthoceras Lowell Ahart 1987-5-6 5508 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  SEINET10973580  Barbarea orthoceras Mary Susan Taylor 1978-6-24 Taylor 1654 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  CHSC42510  Barbarea verna Lowell Ahart 1987-5-6 5565 Butte On a sand bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC33716  Berberis aquifolium var. dictyota M. S. Taylor 1981-4-8 3513 Butte W side of Ponderosa Way, where powerlines cross the rd on Rocky Ridge, ca. 6 mi n of its jct with Hwy 70 at Jarbo Gap. 914 Comment
  JEPS104017  Bergia texana Lowell Ahart 2002-12-6 10021 Butte On the bottom of a deep wash, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles SE of Oroville. Comment
  JEPS97414  Bergia texana Lowell Ahart 1995-7-15 7594 Butte Peter Ahart Ranch about 1 1/2 miles north and 3/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  UC1586529  Bergia texana Lowell Ahart 1991-9-14 6719 Butte Joie Osgood Ranch, about 2 miles east of Honcut. Comment
  SBBG128778  Bidens frondosa L. Ahart 2013-11-17 19259 Butte sides of McCabe Crk, below the high water line of Lake Oroville, ca. 5/8 mi SW of Enterprise Bridge across Lake Oroville 245 Comment
  JEPS106002  Blennosperma nanum var. nanum Lowell Ahart 2004-4-1 10706 Butte On the margins of vernal pools, on the north side of Nelson Avenue, about 45 yards west of the intersection of 20th Street and Nelson Avenue, Thermalito 53 Comment
  CHSC35021  Boechera arcuata R. E. Preston 1982-3-25 201 Butte Ca. 1.5 mi e of Pulga, n side of Feather River canyon. 670 Comment
  UC855524  Boechera platysperma A. A. Heller 1917-7-29 12859 Butte summit above Jonesville 2133 Comment
  UCD114430  Boechera rectissima R. E. Preston 1981-7-8 104 Butte ca. 15 m e of Humboldt Rd, ca. 4.2 km nne of Jonesville. 1970 Comment
  RSA475190  Boisduvalia cleistogama Aaron Liston, Sara Meury 1988-5-28 743 -6 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  RSA34062  Boisduvalia stricta A. A. Heller 1900-5-8 5513 Butte Berry Canyon Comment
  UC1100844  Bolboschoenus fluviatilis Herbert L. Mason, Verne Grant 1946-8-14 13017 Butte canal near big pond on Sacramento Outing Club (Butte Sink); , on Sacramento Outing Club Comment
  UC1100854  Bolboschoenus maritimus Herbert L. Mason 1945-9-19 12733 Butte nw Pennington; Gray Lodge Game Refuge Comment
  UC955480  Botrychium multifidum Miss M. Hyatt Sep 1914 Butte Jonesville Comment
  CHSC40383  Boykinia occidentalis Lowell Ahart 1985-6-30 5075 Butte Along a small stream. East of the dirt road to the Forbestown Res., about 2 1/2 miles north-east of Forbestown. 868 Comment
  CHSC107902  Brachypodium distachyon L. P. Janeway 2011-6-29 10411 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 Comment
  CHSC110139  Brachypodium distachyon L. P. Janeway 2012-5-2 10810 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; south-facing slope overlooking Big Chico Creek, about 600 m northeast of Horseshoe Lake between Upper Trail and the Rim. 146 Comment
  CHSC68550  Brachypodium distachyon Lowell Ahart 1997-5-18 7740 Butte Clear Creek, south of the hay barn, Butte Junior College. 76 Comment
  CHSC82428  Brachypodium distachyon Lowell Ahart 2002-5-7 9634 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
  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
  UCD57008  Brachypodium distachyon G. L. Stebbins Jr. 1939-7-5 2894 Butte 3 miles east of Oroville. 152 Comment
  CHSC42062  Brassica rapa Lowell Ahart 1986-11-7 5423 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CAS-BOT-BC36720  Brassica rapa Lowell Ahart 1974-5-12 s.n. Butte About 0.5 mile east of Honcut. 150 Comment
  CAS-BOT-BC36722  Brassica rapa Lowell Ahart 1986-11-7 5423 Butte East of the Feather River, about 3 miles east of Gridley. 28 Comment
  CHSC6753  Briza maxima Marilyn Lee 1968-5-3 163 Butte South side of Skyway, ca 6 miles E. of Chico. Comment
  CHSC81426  Briza minor J. Trizzino 2001-4-30 66 Butte Upper Bidwell by Horseshoe Lake along seasonal creek drainage. 109 Comment
  CHSC99642  Briza minor H. Koeth; H. Jansen 2007-4-25 Butte Hwy 32 (Roadside), West from Bidwell Park. UTM 10 608429E 4402420N. 342 Comment
  SEINET10570649  Brodiaea A. Arthur Heller 1938-4-11 Heller 15023 A Butte Hill back of the rifle range east of Chico in the oak belt of the Upper Sonoran Life Zone, 300 feet. Comment
  CHSC91471  Brodiaea minor Lowell Ahart 2005-7-13 12145 Butte Ditch, about 20 yards south 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. 748 Comment
  JEPS117206  Brodiaea minor Lowell Ahart 2010-5-14 16664 Butte Near south park fence, Disc Golf Area, about 200 yards west of the entrance to the Disc Golf Area, west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 350 Comment
  JEPS93812  Brodiaea minor Lowell Ahart 1998-7-19 8046 Butte on w side of Hurleton Swedes Flat Road about 1 1/2 air mi s of Hurleton (about 11 air mi se of Oroville); Hurleton Swedes Flat Road 487 Comment
  UC768609  Brodiaea minor R. F. Hoover 1937-5-18 2237 Butte 3 mi n Chico Comment
  CAS-BOT-BC484575  Brodiaea purdyi A. A. Heller 1914-7-24 11619 ` Butte Butte Meadows 1219 Comment
  CHSC39667  Brodiaea sierrae Lowell Ahart 1983-6-21 4081 Butte Along Bloomer Hill Road, about 3/4 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville. Section 6. 425 Comment
  CAS-BOT-BC149545  Bromus carinatus var. carinatus Lowell Ahart 1988-6-23 6073 Butte South of the intersection of Black Bart Road and Forbestown Mill Road. 670 Comment
  CHSC87811  Bromus carinatus var. carinatus Lowell Ahart 2004-6-2 10989 Butte Near a small meadow, on the east side of a logging road, on the north side of Forbestown Road, about 200 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 1/4 miles (air) southwest of Forbestown. 752 Comment
  JEPS120812  Bromus carinatus var. carinatus Lowell Ahart 2013-5-27 18715 Butte On the E side of Black Bart Road, about 3/4 mile (by road) SW from the intersection of Forbestown Road and Black Bart Road, about 3.5 air miles SW of Forbestown. Comment
  CHSC56624  Bromus diandrus T. B. Devine 1980-3-10 605 Butte Chico Sewage Treatment Plant. Comment
  CHSC98973  Bromus diandrus Lowell Ahart 2008-5-12 14742 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 258 Comment
  CHSC77457  Bromus hordeaceus Tim Stofer 1997-4-14 15 Butte At the head of the South Rim Trail off South Park Dr. in upper Bidwell Park. All along the trail. 76 Comment
  UCR237316  Bromus hordeaceus George K. Helmkamp, E. A. Helmkamp 2012-4-14 18734 Butte Northern Sacramento Valley, Middle Honcut Road, 1.5 miles east of CA-70, ESE of Gridley 18 Comment
  CHSC46436  Bromus japonicus Lowell Ahart 1989-5-29 6316 Butte Along the gravel road to the Forbestown Reservoir, about 1 mile north-east of Forbestown Road, about 2 1/2 miles north-east of Forbestown. 792 Comment
  CAS-BOT-BC162457  Bromus laevipes John Thomas Howell 1967-6-22 42621 Butte Sierra Nevada. Magalia. 701 Comment
  CAS-BOT-BC162458  Bromus laevipes Lowell Ahart 1977-6-2 1471 Butte Peter Ahart Ranch, Honcut. Along Honcut Creek. 50 Comment
  CDA31600  Bromus laevipes L. Ahart 2004-6-22 11109 Butte On the east margin of a gravel road, road leads to Butte Creek, south of Doe Mill Road, about 1/8 mile southwest of the bridge across Butte Creek, about 2 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City. Comment
  SEINET10935012  Bromus laevipes Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4058 Butte T20N R5E sec 5. Along Bloomer Hill Rd, ca. 1/8 mi w of Oroville-Quincy Hwy, 1.3 mi s of Berry Creek School, ne of Oroville. Foothill Woodland; 400 m. 400 Comment
  CHSC49522  Bromus madritensis subsp. madritensis Vernon Oswald 1985-4-29 1727 Butte Oroville-Quincy Hwy 1.9 mi s of Bidwell Bar Bridge. 316 Comment
  UCR143553  Bromus marginatus H. F. Copeland 1930-7-20 1345 Butte Jonesville 1524 Comment
  UCD59252  Bromus orcuttianus A. A. Heller 1917-7-26 12819 Butte Butte Meadows. 1402 Comment
  CAS-BOT-BC161961  Bromus rubens Lowell Ahart 1962-4-20 s.n. Butte Peter Ahart Ranch, Honcut. 150 Comment
  CHSC44173  Bromus suksdorfii V. Oswald; L. Ahart 1988-7-26 3626 Butte Snow Mt. region located ca. 6 air mi se of Jonesville. 2042 Comment
  CHSC27567  Bromus tectorum Robert Schlising 1978-5-17 3259 Butte Magalia; serpentine outcrop just S of Magalia Reservoir and crossed by S.T. RR and Coutelenc Road. 670 Comment
  UC398886  Bromus vulgaris E. B. Copeland 1929-7-22 336 Butte Jonesville 1500 Comment
  JEPS113695  Bulbostylis capillaris Lowell Ahart 2007-6-12 14073 Butte Along swales, in 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
  UCR263566  Bulbostylis capillaris Lowell Ahart 2000-6-27 8513 Butte Sierra Nevada Mtns., Big Bald Rock, about 3 miles (air) east of Madrone Lake, about 12 miles (air) northeast of Oroville 994 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
  SEINET10457152  Callitriche heterophylla Mary Susan Taylor 1978-5-7 Taylor 1607 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  JEPS119795  Callitriche marginata Lowell Ahart 2012-5-4 17989 Butte About 1 1/4 miles northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  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
  SBBG17201  Calochortus albus M. Vincent 1962-4-16 200 Butte 1 mi W of Paradise on Honey Run Rd, Butte Crk Cyn Comment
  SEINET10971609  Calochortus leichtlinii Mary Susan Taylor 1978-7-18 Taylor 1702 Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC4674  Calochortus luteus R. Carter 1966-4-30 386 Butte Found 7 mi. E of Oroville ca. 1/8 mi. W off Feathervale at 6120 Woodleaf St. Rt. 243 Comment
  SD6511  Calochortus luteus Mrs. R. M. Austin 1883-1 Butte No further locality information given on label. Comment
  UCD13260  Calochortus luteus Dean Dubbe 1974-5-5 10- 3 Butte State Highway 70, 10 miles northwest of Oroville. 274 Comment
  UCSB63609  Calochortus luteus McKirahan, Kim 1986-4-13 Butte Ca. 46 miles north of Horseshoe Lake in upper Bidwell Park, Richardson Springs; quadrangle, nw 1/4 of sw 1/4 Sec 8,T23N,R1W 137 Comment
  CHSC115417  Calochortus monophyllus Kate Ronan 2013-4-9 Butte Centerville flumes trail. 368 Comment
  CHSC2239  Calochortus monophyllus N. Maxwell 1929-3-17 Butte Paradise. 609 Comment
  CHSC2240  Calochortus monophyllus M. Roberson 1956-4-7 Butte SW of Paradise, along Skyway. 426 Comment
  CAS-BOT-BC492602  Calochortus monophyllus C. C., Mrs. Bruce 1893-5-1 2404 Butte Foot hills Comment
  CHSC40083  Calochortus tolmiei A. A. Heller 1938-4-23 15055 Butte Summit between the West Branch and North Fork of the Feather River on Highway 324, in the Arid Transition Life Zone. Comment
  UC725931  Calochortus tolmiei A. A. Heller 1919-5-18 13168 Butte Stirling 1074 Comment
  CHSC53698  Caltha leptosepala var. biflora Kirsten Tarp 1982-7-16 208 Butte In Kimshew Creek, Crane Valley. 1591 Comment
  CAS-BOT-BC273294  Calycadenia fremontii H. M. Hall 1914-7-18 9757 Butte Little Chico Creek, 5 mi. E. of Chico 152 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-BC106088  Calycadenia oppositifolia David D. Keck 1928-6-16 452 Butte 1.5 mi s. of Berry Cr. Inn 600 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
  CAS-BOT-BC123537  Calycadenia oppositifolia Charles Christopher Parry 1882-1-1 s.n. Butte Chico Comment
  CHSC28518  Calycadenia oppositifolia M. S. Taylor; J. D. Jokerst 1979-10-13 2272 Butte Jordan Hill Rd (Ponderosa Way on some maps) ca. 11.1 mi N of its jct with Concow Rd, ca. 1.9 mi N of Sawmill Peak, ca. 2 mi E of Magalia. 853 Comment
  CHSC30940  Calycadenia oppositifolia L. Ahart 1980-7-4 2448 Butte Near the Oak Grove Cemetary, ca. 1/2 mi SE of Hurleton. 600 Comment
  UC894256  Calycadenia oppositifolia A. A. Heller 1915-7-10 12075 Butte 10 mi e of, Oroville; Sierra foothills Comment
  RSA0118938  Calycadenia truncata Lowell Ahart 2013-11-13 19254 Butte Between the road and the large cutbank, about 50 yards southeast of the Ponderosa Dam spillway. 300 Comment
  UC1953745  Calycadenia truncata R. L. Carr 1986-10-3 2266 Butte NE of Oroville, Olive Hwy (162, Oroville-Quincy Road), 3.6 mi NE of Forbestown Rd, ca. 0.5 mi N of Bidwell Bar Bridge Comment
  CHSC107384  Calycanthus occidentalis Blake McSorley 2010-5-11 Butte Bidwell Park at Christer Ave. Found along Big Chico Creek. 71 Comment
  JEPS127136  Calycanthus occidentalis Lowell Ahart 2016-8-30 21318 Butte On the north side of La Porte road, about one mile west of Marysville Road, about 4 miles (air) southwest of Brownsville. Comment
  UCD68064  Calycanthus occidentalis Paul Quiggle 1976-5-24 9 Butte Lassen National Forest, approximately 35 miles East of Chico, California, on the East bank of Deer Creek. Plant found in mid-day sunlight. Comment
  CHSC1362  Calyptridium monospermum R. M. Staley 1952-7-10 Butte Butte Meadows. 1356 Comment
  HSC103802  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-7-9 8804 Butte High Cascade Range. Doe Mill Ridge; along Doe Mill Road, 3.1 km. NNE of Schott Road. 860 Comment
  JEPS113310  Calystegia atriplicifolia subsp. buttensis L. P. Janeway 2006-6-25 8704 Butte High Cascade Range. Along Cohasset Ridge and Cohasset Road about 0.5 km southwest of Anderson Mill site and about 5.9 air km north-northeast of Cohasset. Comment
  CHSC103117  Calystegia occidentalis subsp. occidentalis Lowell Ahart 2009-5-30 15775 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 379 Comment
  JEPS95023  Calystegia occidentalis subsp. occidentalis Lowell Ahart 1997-7-11 7751 Butte about 2 air mi ne of Stirling City (s side of dirt road, se of Cold Creek, about 2 air mi sw of Bald Mountain, about 9 mi by road from Stirling City) 1219 Comment
  CHSC19943  Capsella bursa-pastoris M. S. Taylor 1975-3-25 419 Butte In field between 11th and 12th Sts, at end of Citrus Ave, Chico. Comment
  CHSC35642  Capsella bursa-pastoris R. E. Preston 1982-4-7 226 Butte At edge of almond orchard; nw corner jct Dayton-Durham Rd and Roble Rd, Durham. 48 Comment
  CHSC3623  Capsella bursa-pastoris John Francis 1966-2-21 28 Butte Orchard across road from Durham Cemetery. Comment
  CHSC42102  Capsella bursa-pastoris Lowell Ahart 1986-11-7 5429 Butte In a prune orchard, east of the Feather River, north of the Oroville Gridley Highway, about 3 miles east of Gridley. 28 Comment
  CHSC78069  Capsella bursa-pastoris Megan Lee Hudzik 1998-4-16 20 Butte Bidwell Park, 50 m w of Horseshoe Lake, 6 miles s of Bidwell Mansion. Next to a stream. 91 Comment
  CHSC3875  Cardamine californica Gerry Carrauthers 1966-2-28 34 Butte Upper Bidwell Park ca. 4 mi N.E. of Bidwell Golf Course. Ca. 9 mi N.E. of the city of Chico. Comment
  CHSC96240  Cardamine californica var. californica R. Fischer 2006-3-17 983 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east -side addition along Hwy. 32. Plants growing along the south rim Trail ca. 200 yds south of the old cabin/pond site. 237 Comment
  CHSC90636  Cardamine oligosperma Lowell Ahart 2005-4-2 11684 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
  SEINET10448561  Cardamine oligosperma Mary Susan Taylor 1975-3-3 Taylor 400 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
  SEINET8205866  Cardamine oligosperma A. A. Heller 1914-3-12 Butte in canon of Big Chico creek. 69 Comment
  RSA699523  Carduus pycnocephalus R. D. Fischer 2004-4-20 142 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east side addition along Hwy 32. Along Guardian Trail north of Disk Golf Course 314 Comment
  JEPS117247  Carduus pycnocephalus subsp. pycnocephalus Lowell Ahart 2010-5-7 16613 Butte Below rim, north side of disk golf area, on a ridge about 250 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 360 Comment
  CHSC113937  Carex abrupta Lowell Ahart 2014-8-13 19707 Butte 20 yards east of the east edge of a large wet meadow (some bog), about 130 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  CAS-BOT-BC18461  Carex abrupta L. P. Janeway; R. A. Schlising 1988-7-1 2935 Butte Willow Creek where Humbug Road crosses. 1874 Comment
  CHSC94345  Carex amplifolia Lowell Ahart 2006-7-16 12968 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
  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
  CHSC36066  Carex angustata J. D. Jokerst; R. A. Schlising 1982-6-4 1590 Butte Concow Creek in an open meadow at its headwaters. 1097 Comment
  CAS-BOT-BC17975  Carex aquatilis J. D. Jokerst; R. A. Schlising 1982-6-4 1590 Butte Along the edges of Concow Creek at its headwaters. South of and adjacent to Flea Valley. 1097 Comment
  RSA364594  Carex athrostachya H. F. Copeland 1928-8-20 1063 Butte Jonesville. 1524 Comment
  UC478553  Carex aurea E. B. Copeland 1930-6-23 608 Butte Jonesville 1500 Comment
  CHSC88472  Carex barbarae L. P. Janeway; B. Castro 2004-8-7 8242 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; about 12 m north of Big Chico Creek and about 7 m higher; between Upper Park Road and Yahi Trail; between Day Camp and the Power Lines. 93 Comment
  JEPS120141  Carex barbarae Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18004 Butte West of the horse path, on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  CHSC45076  Carex bolanderi Vernon Oswald 1985-6-2 1797 Butte Upper Bidwell Park, Chico, along Yahi Trail ca. 2000 ft w of the turn-around at the e end of Upper Park Road. 204 Comment
  CHSC41293  Carex cusickii S. C. Morey 1983-7-21 489 Butte Cherry Hill Meadow. On N side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC115865  Carex cyrtostachya P. F. Zika; B. Wilson, L. Ahart, L. Janeway 2011-8-5 25713 Butte Lumpkin Road, 1.1 road km SW of junction with road to Cascade, headwaters of upper W branch of Know-nothing Creek, 2.1 air km S of top of Quartz Hill, northern Sierra Nevada Highlands. 1000 Comment
  CHSC102837  Carex densa Lowell Ahart 2009-6-3 15816 Butte About 100 yards west of the table at the old 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
  CHSC41227  Carex densa J. D. Jokerst 1985-5-11 2325 Butte Along intermittent creek that drains Box Hall Flat. Ca. 1.0 mile east of Potter Ravine, north of adjacent to to Lake Oroville. Comment
  CAS-BOT-BC34954  Carex densa L. P. Janeway 1987-5-7 2022 Butte NE side of Hwy 149 0.5 mile NW of Hwy 70. 74 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
  CHSC104835  Carex feta Lowell Ahart 2010-6-25 16839 Butte West of the lone oak tree, about 80 yards west of the improved parking area, cattle chute and Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 406 Comment
  CHSC111132  Carex feta Lowell Ahart 2012-6-2 18138 Butte Along a small stream, west of a poor dirt road, about 40 yards north of Truex Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oriville. 286 Comment
  JEPS116088  Carex gracilior Lowell Ahart 2009-5-15 15710 Butte East bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 234 Comment
  SEINET12649429 Image available Carex gracilior Lowell Ahart 2009-1 15911 Butte 59 Comment
  SEINET4231861 Image available Carex gracilior Unknown 2009-1 15710 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 milesortheast of Chico. Comment
  SEINET8068024 Image available Carex gracilior Unknown 2009-1 24617 Butte C 0.5km N of North Honcut Creek, 12 miles SE of Oroville, northern Sierra Nevada Foothills (n SNF). Comment
  JEPS121960  Carex heteroneura Lowell Ahart 2014-7-7 19574 Butte East of the bog, Coon Hollow, about 2 miles (air) north of Philbrook Reservoir. Comment
  CHSC6658  Carex hirtissima Marilyn Lee 1968-4-19 116 Butte West side of Cherokee Road, 2 miles south-east of cemetary. Table Mt. Comment
  CAS-BOT-BC28189  Carex hirtissima L. P. Janeway 1989-5-19 3260 Butte Griffin Gulch and Jordan Hill Rd. 5.4 mi N of Concow Rd. Paradise East quad. 624 Comment
  UC600696  Carex hoodii H. F. Copeland 1929-6-10 1247 Butte Jonesville Comment
  CHSC113460  Carex integra Lowell Ahart 2014-7-7 19592 Butte Disturbed area on the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC52868  Carex integra L. P. Janeway 1988-6-19 2836 Butte 3.1 mi N of Stirling City towards Inskip; along logging road 0.2 mi W of Skyway. 1219 Comment
  RSA769175  Carex inversa P. F. Zika 2010-5-16 24825 Butte Safford Street near Third Avenue, Oroville, Janeway s station, Sacramento Valley 50 Comment
  CHSC11934  Carex lemmonii E. B. Copeland 1929-7-5 610 Butte Jonesville. 1500 Comment
  CHSC61510  Carex lemmonii Lowell Ahart 1993-6-26 7007 Butte Small meadow, on the south side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  UCD140476  Carex lemmonii L. P. Janeway 1987-5-28 2109 Butte along side road (23N12Y) of Four Trees Road, 1.6 miles west of its junction with OroQuincy hwy. 1463 Comment
  CAS-BOT-BC32158  Carex multicaulis L. P. Janeway; Robert A. Schlising; B. Castro; Pauleen Broyles 1987-7-19 2493 Butte Butte Meadows quad. Near Humbug summit Rd ca 5.5 mi N of Inskip, 1539 Comment
  SEINET7568466 Image available Carex multicaulis M. S. Taylor 1981-3-24 3435 Butte Two mile stretch along both sides of Feather River Hwy (70), just NE of Pulga to Cresta Powerhouse, ca 20 mi NE of Oroville. Pulga quad. 518 Comment
  CHSC45061  Carex multicostata Vernon Oswald 1988-6-30 3548 Butte At the end of a spur road on the w side of Humbug Rd. between Cold Springs and the summit. 1975 Comment
  SEINET10752877  Carex multicostata Vernon H. Oswald, Lowell Ahart 1988-7-26 Oswald 3630 Butte Snopw Mt. region located ca. 6 air mi SE of Jonesville. Comment
  CHSC52257  Carex nebrascensis L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2508 Butte Southernmost pond on slopes on south side of Coon Hollow. 1767 Comment
  CHSC45060  Carex nervina Vernon Oswald 1983-7-19 879 Butte Philbrook Rd. at the bridge crossing the West Branch of the Feather River. 1554 Comment
  CHSC52247  Carex nudata L. P. Janeway 1987-6-20 2257 Butte South Fork Feather River at crossing of road from Lumpkin Ridge to Mooreville Ridge, 3.3 mi from the Feather Falls-Lumpkin Ridge Rd. 975 Comment
  CHSC84720  Carex nudata L. P. Janeway 2003-5-11 7783 Butte High Cascade Range. Along west edge of Butte Creek, 700 m south-southwest of the Ponderosa Way bridge (Forks of Butte); just upstream of the diversion structure. 588 Comment
  UC1609337  Carex nudata Lowell Ahart 1993-4-8 6932 Butte about 1 1/4 mi w Biggs (on s side of the Biggs Princeton Road) 30 Comment
  CAS-BOT-BC119561  Carex nudata L. P. Janeway 1989-5-19 3269 Butte Paradise East quad. W Branch Feather River at crossing of road from Magalia to Sawmill Peak 481 Comment
  JEPS102949  Carex retroflexa var. texensis L. P. Janeway 1997-4-20 5105 Butte Within the City of Chico; south side of town; in backyard lawn at 129 W. 19th Street 60 Comment
  CHSC47140  Carex serratodens Joyce Lacey; Dave Wieley 1989-4-30 Butte Low in the cyn of N Fk Feather River; in seep area (ditch) along Hwy 70 immediately west of the 'Pulga' bridge over the river. 472 Comment
  CHSC44948  Carex simulata L. P. Janeway; R. A. Schlising, B. Castro, Pauleen Broyles 1987-7-19 2504 Butte Coon Hollow, 1.0 mi SE of the Humbug Summit Rd. Mdw on north side of the creek. 1661 Comment
  CHSC94300  Carex simulata Lowell Ahart 2006-6-16 13011 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
  CHSC61511  Carex stipata var. stipata Lowell Ahart 1993-7-6 7051 Butte In a small meadow, on the north side of the dirt road, about 1/4 mile west of the Lost Creek Reservoir. 1036 Comment
  CAS-BOT-BC116735  Carex subfusca Herbert Faulkner Copeland 1932-7-14 s.n. Butte Jonesville, along ditches and in damp places. Comment
  CHSC106159  Carex subfusca Peter F. Zika 2009-6-17 24508 Butte Cascade Range Highlands (CaRH), SE side of Concow Road at south end of Concow Reservoir, 3.7 road miles N of Route 70. 640 Comment
  CHSC83266  Carex subfusca L. P. Janeway; B. Castro 2002-7-7 7621 Butte High Cascade Range. Along the County Road above the Discovery Creek and Last Chance Creek; 1.3 km north of Bald Mountain Lookout. 1609 Comment
  SEINET8573794 Image available Carex subfusca Unknown 2009-1 24508 Butte Comment
  SEINET10750064  Carex subfusca Mary Susan Taylor 1978-7-19 Taylor 1748 Butte Cherry Hill Campground, on S side of Old Humboldt Road, ca. 2 mi SW of Jonesville. 1524 Comment
  CHSC52238  Carex utriculata L. P. Janeway 1987-6-26 2326 Butte Meadow just NW of Logue Meadows along the road to Lynch Meadows. 1325 Comment
  JEPS110204  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
  CHSC45067  Carex vesicaria Vernon Oswald 1987-6-23 3020 Butte High Lakes Rd. 4.8 mi (odometer) n of Philbrook Rd. 1889 Comment
  CHSC94924  Carex vulpinoidea L. P. Janeway 2006-7-10 8810 Butte Northern Sierra Nevada Foothills. West side of Morris Ravine arm of thermalito Diversion Pool (Feather River), 2.0 km north-northeast of Thermalito Diversion Dam. At edge of water. 68 Comment
  CHSC47141  Carex xerophila B. Castro; Gail Kuenster 1989-4-29 307 Butte Ca 0.1 mi N of jct Coutolenc Rd and Skyway; on flat ledge between Coutolenc Rd and old SPRR bed. 707 Comment
  SEINET10785808  Carex xerophila John Thomas Howell, Gordon H. True 1969-4-9 Howell 45490 Butte Magalia. 701 Comment
  CAS-BOT-BC249593  Castilleja applegatei subsp. pinetorum P. C. Hutchison 1961-6-9 2103 Butte Canyon of the north fork of the Feather River along highway US, at Pulga Bridge, west side of river Comment
  CAS-BOT-BC249594  Castilleja applegatei subsp. pinetorum L. R. Heckard; J. R. Sweeney 1953-4-27 345 A Butte Feather River Highway about 23 miles N.E. of Oroville 548 Comment
  CHSC43191  Castilleja applegatei subsp. pinetorum Richard J. Slama 1981-4-20 8 Butte On s rim of canyon. Ca. 7 mi se of Chico, ca. 5 mi. e of hwy. 99 on Skyway rd. 243 Comment
  CHSC44129  Castilleja arachnoidea V. Oswald; L. Ahart 1988-7-29 3648 Butte Ca. 5 mi (air) se of Jonesville on the ridge running eastwards from the peak of Snow Mtn. 2097 Comment
  CHSC52138  Castilleja attenuata C. W. Dawson 1978-3-29 6 Butte 1.5 mi se of Paradise and junction of Pearson Rd. and Clark Rd. (Hwy. 191) 800 ft nnw of rdwy, at top of ridge. 335 Comment
  CHSC90167  Castilleja attenuata J. Lund 1980-4-19 Butte On a trail leading to the falls above Richardson Springs, northeast of Chico. On hillside. 121 Comment
  UC673463  Castilleja attenuata H. L. Mason 1927-5-10 3715 Butte ne of Oroville (Cherokee Mine) Comment
  UC175548  Castilleja exserta A. A. Heller 1913-4-7 10729 Butte 6 mi n Oroville Comment
  JEPS119784  Castilleja exserta subsp. exserta Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18015 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  UCSB63719  Castilleja exserta subsp. exserta Jensen, Julie 1987-4-10 Butte 2 mi from Cherokee Rd; Table Mountain; Oroville quad.,7.5', T 20 N, R 4 E, NW 1/4 Sec. 18 335 Comment
  CHSC29117  Castilleja lacera M. S. Taylor; J. D. Jokerst, L. Ahart 1980-4-6 2458 Butte On n side of Swedes Flat Rd in dry open areas in Foothill Woodland, ca. 1 mi e of its jct with Oroville Bangor Hwy, ca. 10 mi se of Oroville. 335 Comment
  JEPS4326  Castilleja lacera R. F. Hoover 1936-5-20 1149 Butte 10 mi sw Oroville Comment
  CHSC114951  Castilleja lineariloba Lowell Ahart 2015-3-31 19986 Butte Road cut on the east side of Oroville Quincy Highway (162), about one mile north of the suspension bridge across Lake Oroville, about 7 miles (air) northeast of Oroville. 335 Comment
  SD60187  Castilleja rubicundula subsp. rubicundula A. A. Heller 1927-5-7 14365 Butte along the Paradise grade above Clear Creek, the type station where I collected in 1902 Comment
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Jun 11 2015
  CDA41389  Castilleja tenuis T. C. Fuller 1962-7-12 9170 Butte Road to Jonesville, 2 miles east of Butte Meadows. 0 Comment
  CHSC115407  Catalpa bignonioides M. Rogers 2013-5-20 Butte City of Chico residence on Pennisue Way. 60 Comment
  CAS-BOT-BC195580  Catapodium rigidum Lowell Ahart 1979-4-28 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC48547  Ceanothus cordulatus H. F. Copeland 1920-7-7 38 Butte Jonesville 1219 Comment
  CAS-BOT-BC51727  Ceanothus lemmonii H. L. Mason 1927-5-19 3714 Butte Cherokee mine, Table Mountain Northeast of Oroville Comment
  CDA13233  Ceanothus lemmonii G. F. Hrusa, T. D. Wilfred 1996-7-8 13080 Butte Plumas National Forest; Old Railroad Grade Rd. nr. Paradise Lake Dam, approx. 3 m. N of Magalia. Comment
  RSA512835  Ceanothus lemmonii J. T. Howell 1975-6-15 51115 Butte Skyway near Billie Road, Paradise. 610 Comment
  UC634987  Ceanothus lemmonii H. L. Mason 1927-5-19 3714 Butte ne Oroville (Cherokee Mine.); Table Mt. Comment
  CHSC86137  Ceanothus parvifolius John Dittes 2002-6-29 624 Butte Northern High Sierra Nevada Range; Watson Ridge; ca. 2.3 air-miles south of Middle Fork Feather River, ca. 2.9 air-mile west by southwest of Cascade, ca. 6.8 air-miles north by northeast of town of Feather Falls. On slope above FS access road. 1255 Comment
  CAS-BOT-BC51999  Ceanothus prostratus E. B. Copeland 1930-7-7 425 Butte Jonesville 1600 Comment
  CAS-BOT-BC52008  Ceanothus prostratus H. F. Copeland 1920-3-21 s.n. Butte Jonesville 1219 Comment
  CAS-BOT-BC52015  Ceanothus prostratus Barbara Trowbridge 1968-5-4 264 Butte Three miles North of Magalia on Magalia-De Sabla Road 762 Comment
  RSA107845  Ceanothus prostratus L. S. Rose 1955-6-14 55098 Butte De Sabia. 732 Comment
  SEINET12210496  Ceanothus prostratus D. G. Bendix 1978-1 9 Butte 0.8 km s of junction of Holmwood Drive with Rosewood Drive, Magalia;3 m e of rock 1.5 m tall 850 Comment
  UC1071489  Ceanothus velutinus P. L. Johannsen 1936-7-21 960 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  UC79907  Ceanothus velutinus Mrs. R. M. Austin July, 1896 757 Butte Colby Comment
  CHSC100871  Celtis laevigata L. P. Janeway 2008-10-8 9603 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; north side of Big Chico Creek 455 m west of Day Camp. 91 Comment
  CHSC106607  Celtis sinensis L. P. Janeway 2011-4-19 10234 Butte Cascade Range Foothills. Upper Bidwell Park, Chico; along the south side of Upper Park Road, north side of Big Chico Creek, 0.1 km west of beginning of Yahi Trail. 95 Comment
  CDA7258  Centaurea maculosa W. Gilbert, R. Dodd 1970-7-22 Butte North side of Highway 32 west of California Forestry Station, Forest Ranch, northeast of Chico. 0 Comment
  JEPS115574  Centaurea melitensis Lowell Ahart 2009-5-23 15769 Butte On the sides of Guardians Trail, about 200 yards southwest of Pine Trail, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  CHSC109683  Centaurea solstitialis Lowell Ahart 2012-7-5 18282 Butte On the north side of the gravel road, east of Cedar Grove. Lower Bidwell Park, Chlico. 71 Comment
  CHSC296  Centaurea solstitialis R. M. Staley 1952-7-15 Butte Paradise. Comment
  JEPS93837  Centaurium muehlenbergii Lowell Ahart 1998-7-1 8025 Butte about 7 air mi n of Oroville (about 100 yards s of a east west fence, about 5/8 mi n of the cow chute along Cherokee Road, North Table Mountain); North Table Mountain, Cherokee Road 403 Comment
  RSA770101  Centaurium muehlenbergii L. Ahart 2008-11-4 15402 Butte Sides of Potter Ravine, below high water line of Lake Oroville, about one mile north of the large parking area on the north end of Oroville Dam, about 5 air miles northeast of Oroville. 243 Comment
  POM130643  Centaurium venustum E. B. Copeland 1903-7-27 3487 Butte Chico. Comment
  JEPS5013  Centromadia fitchii H. F. Copeland 1645 Butte near Pentz Comment
  UC171477  Centromadia fitchii A. A. Heller 1913-9-16 11136 Butte e of Chico (hills near Big Chico creek) Comment
  CHSC35978  Cephalanthera austiniae M. S. Taylor 1982-6-24 4746 Butte Rag Dump 5, ca. 2 mi n of Flea Mt, ca. 10 mi n of Jarbo Gap on Hwy 70. 1158 Comment
  JEPS115367  Cephalanthus occidentalis var. californicus Lowell Ahart 2009-7-9 16019 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
  CHSC64040  Cerastium fontanum subsp. vulgare S. C. Morey 1983-8-4 722 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  CHSC113378  Cerastium glomeratum Lowell Ahart 2014-4-15 19355 Butte Near a small drainage, below the high water line of Lake Oroville, about 400 yards west of the old road, about 3 1/2 miles (air) northeast of Oroville Dam. 235 Comment
  CHSC211  Cerastium glomeratum S. Carter 1929-4-23 Butte Chico. 60 Comment
  CHSC37435  Cerastium glomeratum R. A. Schlising 1982-4-24 4234 a Butte Richvale Vernal Pools, 0.25 mi s of jct Hwy 162 to Oroville and Hwy 99, along the latter and across from Thermalito Afterbay. Comment
  CAS-BOT-BC388263  Cerastium glomeratum Lowell Ahart 1987-5-12 5625 Butte South of the dirt road, 1 1/2 miles east of Camp 18, south of Lumpkin Ridge Road, about 8 miles north-east of Feather Falls 1280 Comment
  CHSC21067  Ceratophyllum demersum M. S. Taylor 1975-10-4 960 Butte In Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CAS-BOT-BC400141  Ceratophyllum demersum M. S. Taylor 1982-5-22 4493 Butte Graylodge Waterfowl Refuge, at end of West Liberty Rd, ca. 12 mi sw of Gridley 19 Comment
  SEINET11892046  Cercocarpus betuloides Unknown 1985-1 4843 Butte near Kunkle Reservoir, about 2 mi S of Paradise 488 Comment
  CHSC20042  Cercocarpus betuloides var. betuloides M. S. Taylor 1975-4-25 499 Butte Ca. 1/4 mi e of Cohasset Hwy, ca. 10 mi ne of Chico. Comment
  POM66468  Chaenactis glabriuscula var. heterocarpha C. C. Bruce 1897-05 1988 Butte Forest- Ranch. Comment
  RSA516507  Chamaesyce hooveri R. D. Stone, R. E. Buck 1987-8-4 832 Butte Vina Plains, straddling fenceline, 0.4 miles WSW of the intersection of Hwy 99 and Cana Hwy. 56 Comment
  CHSC113128  Chamaesyce maculata Lowell Ahart 2013-11-18 19276 Butte Below the high water line of Lake Oroville, about 200 yards northeast of the boat ramp at the end of Stringtown Road, on the north side of the road, about 2 1/2 miles (air) northeast of Hurleton. 261 Comment
  JEPS115645  Chamaesyce maculata Lowell Ahart 2009-8-13 16272 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
  UC1563272  Chamaesyce serpillifolia subsp. serpillifolia Lowell Ahart 1990-10-21 6637 Butte 1/2 mi W of Gold Flat (Lake Oroville, about 1 mi N of Nelson Bar Road) 213 Comment
  UC1122498  Chamerion angustifolium subsp. circumvagum P. L. Johannsen 1936-7-20 951 Butte 1 1/2 mi s Butte Mdws.; Lassen National Forest, Paynes Creek Quadrangle Comment
  SEINET10529948  Cheilanthes californica Mary Susan Taylor 1980-3-19 Taylor 2393 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  CHSC83894  Cheilanthes gracillima Lowell Ahart 2003-4-15 10099 Butte Steep slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  CHSC34046  Chenopodium album L. Ahart 1981-7-26 3004 Butte On the sides of a large deep ditch near the dirt road, 1/10 mi w of Pennington Rd on the dirt rd that leads to the Gray Lodge Waterfowl Mgmt HQ, ca. 12 mi sw of Gridley. 35 Comment
  POM312488  Chenopodium ambrosioides var. ambrosioides H. L. Mason, Verne Grant 1946-8-14 13026 Butte Canal near big pond on Sacramento Outing Club, Butte sink. Comment
  JEPS114998  Chenopodium pumilio Lowell Ahart 2007-11-3 14566 Butte Below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise 259 Comment
  CHSC110401  Chenopodium strictum var. glaucophyllum Lowell Ahart 2012-9-28 18475 Butte On the east side of the parth, north of Big Chico Creek, on the west side of the Freeway, Lower Bidwell Park, Chico. 62 Comment
  CHSC34775  Chenopodium strictum var. glaucophyllum L. Ahart 1981-11-6 3230 Butte Ca. 1/8 mi e of Gridley Bridge across the Feather River, ca. 2 mi w of Hwy 70, ca. 4 mi e of Gridley. 35 Comment
  RSA724845  Chenopodium strictum var. glaucophyllum L. Ahart 2006-9-28 13368 Butte E side of the N Fork of the Feather River, on the W side of Hwy 70, about 50 yards S of the Shady Rest Area S of the Arch Rock Tunnel. 445 Comment
  UC600607  Chimaphila umbellata E. B. Copeland 1929-7-1 Butte along Butte Creek Jonesville 1550 Comment
  CAS-BOT-BC451487  Chimaphila umbellata Lowell Ahart 1989-5-29 6310 Butte S. side of gravel road to the Forbestown Reservoir, about 1 mile NE of Forbestown Rd., about 2.5 miles NE of Forbestown 822 Comment
  JEPS61565  Chlorogalum angustifolium W. L. Jepson 1934-5-4 16614 Butte 2 1/2 mi ne Cana Comment
  JEPS61793  Chlorogalum angustifolium Wayne Roderick and G. Keator 1966-4-24 Butte near eastern edge Chico (on Chico-Lake Almanor Road (Highway 32)); near eastern edge Chico Comment
  SEINET10472639  Chlorogalum pomeridianum Mary Susan Taylor 1975-3-10 Taylor 406 Butte Honey Run Covered Bridge, along Butte Creek, from bridge, on bluffs (S side) down to creek and along creek, returning to bridge; ca. 8 mi E of Chico. Riparian Woodland and Foothill Woodland. 152 Comment
  CHSC91466  Chlorogalum pomeridianum var. pomeridianum Lowell Ahart 2005-7-13 12148 Butte About 20 yards east of the intersection of Forbestown Road and Black Bart Road, about 3 1/2 miles (air) southwest of Forbestown, about 12 miles (air) east of Oroville. 759 Comment
  JEPS119767  Chorizanthe membranacea Lowell Ahart 2012-5-12 18038 Butte Humboldt Trail, about 1/10 mile west of Highway 32, south part of Upper Bidwell Park, about 7 1/2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC252672  Chorizanthe membranacea Lowell Ahart 1980-7-20 2469 Butte Near the Suspension Bridge, Oroville 330 Comment
  CAS-BOT-BC252833  Chorizanthe polygonoides var. polygonoides M. S. Taylor 1975-4-26 510 Butte Ca. 500 yds E of Pentz-Magalia Hwy., ca. 1 mi. SE of Paradise 609 Comment
  CHSC21786  Chorizanthe stellulata Robert A. Schlising 1974-5-25 3133 Butte 9.9 mi NE jct Hwy 99 and Hwy 32 in Chico, along Hwy 32. Comment
  CHSC74115  Chorizanthe stellulata B. Castro; L. P. Janeway 1996-5-19 663 Butte Ca e air mi NE of Chico, in Upper Bidwell Park on spine of ridge between Sycamore and Big Chico Creeks, just N of North Rim Trail ca 250 f W of jcn with trail from Diversion Dam. 335 Comment
  CHSC64197  Circaea alpina subsp. pacifica S. C. Morey 1983-7-23 588 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CAS-BOT-BC285282  Cirsium andersonii A. A. Heller 1914-8-6 11640 Butte About Chico Meadows 1219 Comment
  CAS-BOT-BC285578  Cirsium occidentale var. candidissimum E. B. Copeland 1931-7-27 s.n. Butte Jonesville 1650 Comment
  CHSC114710  Cirsium ochrocentrum T. C. Fuller 1966-7-22 14982 Butte E. of rd. at the e. base of Dry Valley Ridge, Madelaine Plains, 3 mi. n. of paved road, 10 mi. w. of Termo, Lassen Co. Comment
  CAS-BOT-BC228760  Cistanthe umbellata Lowell Ahart 1982-6-15 3559 Butte About 1 1/2 miles east of Camp 18, about 8 miles east of Feather Falls 1000 Comment
  CHSC24785  Clarkia arcuata C. E. Stopher 1976-4-14 20 Butte 2.4 km s of Forest Ranch. 579 Comment
  CHSC30796  Clarkia arcuata M. S. Taylor 1980-4-18 2527 Butte Bluff, on e side of Humbug Rd, ca. 3 mi sw of Nimshew. 518 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
  SEINET10453146  Clarkia biloba subsp. brandegeeae Lowell Ahart 1984-6-8 Ahart 4658 Butte Along Ponderosa Way, ca. 1/8 mi W of Ponderosa Dam, ca. 2 mi NW of Forbestown; Yellow Pine Forest; 370 m. 370 Comment
  CHSC35135  Clarkia concinna subsp. concinna R. Schlising; R. Banchero 1980-6-5 3640 Butte N of Oroville along Hwy 70, ca 3 miles S of Pulga crossing of the Feather River. 640 Comment
  CHSC48625  Clarkia gracilis subsp. albicaulis Vernon Oswald 1984-5-28 1210 Butte Cohasset Rd., 3.0 mi n-e of its jct. with Keefer Rd. Beside the road. 243 Comment
  CHSC81383  Clarkia gracilis subsp. albicaulis Samantha Hillaire 2001-5-16 301 Butte Vicinity of Ponderosa Way, about 0.3 mi southeast of Big Chico Creek; UTM 10 611784E 4415729N. On a steep roadcut of a little-used dirt road, on a SW exposure. 353 Comment
  CHSC8618  Clarkia gracilis subsp. albicaulis L. V. Ritter 1969-5-5 307 Butte Ca 2 mi. w of Cohasset, ca 10 yds. s of Cohasset highway. Comment
  LA25999  Clarkia gracilis subsp. albicaulis Carl B. Wolf; 1937-6-12 8783 Butte 2.5 mi. SE of Oroville on road to Wyandotte 91 Comment
  UCD104575  Clarkia mildrediae L. D. Gottlieb 1987-8-22 8759 Butte On Rt. 70, 1.7 miles S of Arch Rock Tunnel. Comment
  CHSC82476  Clarkia mildrediae subsp. lutescens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9731 Butte On road cut bank, Watson Ridge, about 2 miles (air) northeast of Bald Rock Dome, about 5 miles (air) north of Feather Falls (the town). Comment
  CHSC89898  Clarkia mildrediae subsp. lutescens M. K. Hayden; N. L. Jurjavcic 2004-6-23 Butte Northern High Sierra Nevada. At Sly Creek Powerhouse. From within the powerhouse yard, down 50 to 100 feet along the roadside (roadside away from reservoir). 1005 Comment
  UC1732065  Clarkia mildrediae subsp. lutescens L. P. Janeway 1993-7-12 4437 Butte 0.5 mi N of Mountain House (along Road 22N49 1.2 mi SW of Fourmile Ridge Road (Road 22N33)) 853 Comment
  CAS-BOT-BC163355  Clarkia mosquinii L. P. Janeway; Perrie Cobb 1993-7-6 4431 Butte Extreme southwestern end of Watson Ridge; about 0.9 mi north-east of Bald Rock Dome; along a trail (incomplete) to the falls of Feather Falls 914 Comment
  UC1730253  Clarkia mosquinii L. P. Janeway 1994-6-15 4662 Butte Swayne Hill, S end, along Road 23N28 0.8 mi W of Road 22N34 731 Comment
  SEINET10492502  Clarkia mosquinii subsp. mosquinii Lawrence P. Janeway 1991-6-1 Janeway 3978 Butte Berry Creek quad T22N, R4E, SE 1/4 of SW 1/4 of sec 35, elev. 1780 feet. West-facing rocky cut-bank of Dark Canyon Road 0.6 mile south of Big Bend Road/Parkhill. Mid-slope of canyon in mixed conifer forest. 545 Comment
  CAS-BOT-BC172535  Clarkia purpurea subsp. purpurea Mrs. H. C. Cantelow 1940-5-10 s.n. Butte S.W. of Oroville Comment
  CAS-BOT-BC163647  Clarkia purpurea subsp. quadrivulnera A. A. Heller 1914-5-22 11422 Butte Near Richardson Springs Comment
  CAS-BOT-BC163648  Clarkia purpurea subsp. quadrivulnera Mrs. J. H. Morrison 1932-5-1 s.n. Butte Durham Comment
  CHSC35143  Clarkia purpurea subsp. quadrivulnera George Kingston 1980-4-23 20 Butte N of Chico, at jct. Hwy. 99 and Broyles Road. 60 Comment
  CHSC40773  Clarkia purpurea subsp. quadrivulnera Lowell Ahart 1985-5-15 4978 Butte West of Lunt Road, about 1/2 mile north of the intersection of Lunt Road and Highway 70, north of Yankee Hill. 502 Comment
  CAS-BOT-BC164784  Clarkia rhomboidea A. A. Heller 1928-6-28 14617 Butte On the ridge south Butte Creek, Butte Meadows Comment
  CHSC11091  Clarkia rhomboidea Lowell Ahart 1968-5-21 Butte West of Magalia. 304 Comment
  CHSC36811  Clarkia rhomboidea L. Ahart 1982-6-15 3581 Butte Ca. 1.5 mi e of Camp 18, ca. 8 mi e of Feather Falls. 1000 Comment
  SEINET10689268  Clarkia rhomboidea A. Arthur Heller 1928-5-27 Heller 14562 Butte Paradise in red clay soil at the sawmill on the Neal Road near the lower limit of the yellow pine belt. Comment
  CHSC111123  Clarkia unguiculata Lowell Ahart 2012-5-20 18092 Butte On the sides of the Humboldt Trail, about 50 yards southeast of the Guardian Trail, northeast of the Disk Golf Course, southeast part of Upper Bidwell Park, northeast of Chico. 331 Comment
  CHSC52114  Claytonia palustris B. Castro; P. Broyles, R. A. Schlising, L. P. Janeway 1987-7-19 149 Butte 0.95 mi into Coon Hollow below campground, in meadow on n side of Coon Creek. 1664 Comment
  SEINET10674969 Image available Claytonia palustris John R. Swanson 1959-7-4 Swanson 490 Butte Butte Co., Jonesvile, marshy, sloping, stream-fed meadow above south bank of Jones Creek. 0.4 km. east of the Jonesville Hotel. 1550 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
  CHSC60584  Claytonia parviflora subsp. grandiflora Vernon H. Oswald; Lowell Ahart 1993-4-19 5284 Butte Rattlesnake Creek Trail on a serpentine outcrop between Jordan Hill Rd. and Sawmill Pk. Lookout, ENE of Magalia. 740 Comment
  CHSC10749  Claytonia parviflora subsp. parviflora Lowell Ahart 1969-3-27 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC54368  Claytonia parviflora subsp. parviflora M. Bailey 1991-3-6 545 Butte On property s of Honey Run Road and e of Butte Creek; proposed location of Butte Creek Volunteer Fire Station. 103 Comment
  CHSC30356  Claytonia perfoliata subsp. perfoliata J. D. Jokerst 1979-3-5 1139 Butte Top of North Table Mt., 300 m NW of the intersection of Cherokee Rd and the E edge of section 17. Comment
  CAS-BOT-BC91348  Clematis lasiantha Lowell Ahart 1987-5-9 5587 Butte Along Pulga Road, about 0.25 mile W of Bardees Bar along the North Fork of the Feather River, ca. 2.5 miles SW of Pulga. 365 Comment
  SFV1259  Clematis lasiantha M. L. Vincent 1960-1 97 Butte Comment
  CDA24214  Clematis ligusticifolia D. G. Kelch 2006-8-2 06 .335B Butte Along Ord Ferry Rd. Comment
  UCD95581  Clematis ligusticifolia L. and P. Alhart 1993-7-24 4215 Butte Western Virgin's Bower. At the Forbestown Reservoir, ca. 5 mi NE of Forbestown Reservoir, Yellow Pine Forest. 450 Comment
  SEINET10536154  Clematis ligusticifolia Lowell Ahart 1985-7-24 Ahart 5158 Butte At the Generator, at the Forbestown Res., about 4 1/2 miles north-east of Forbestown. Comment
  CHSC77447  Collinsia heterophylla Tim Stofer 1997-4-11 14 Butte This plant was located 50 yards from the head of the South Rim Trail of South Park Dr. in upper Bidwell Park. 76 Comment
  POM193432  Collinsia parviflora E. B. Copeland 1930-6-28 454 Butte Jonesville. 1650 Comment
  POM21003  Collinsia tinctoria Helen M. Edwards 1917-6-6 s.n. Butte De Sabla. Comment
  UC1012166  Collinsia tinctoria F. W. Pennell and A. A. Heller 1940-6-5 25680 Butte 2 mi up along Feather River above Oroville (Route 24); Feather River, Route 24 609 Comment
  SEINET10548312  Collinsia tinctoria Mary Susan Taylor 1981-6-19 Taylor 3959 Butte T22N R5E ne sec 6. Pulga quad. On serpentine, N side of Feather River Hwy 70, at NW end of Pulga bridge and along Pulga Rd ca. 1/4 mi, ca. 20 mi NE of Oroville. Open & dry weathered reddish serpentine. 1600 ft elev. 488 Comment
  SEINET10496938  Collomia heterophylla Mary Susan Taylor 1978-7-21 Taylor 1803 Butte On N and S side of Oroville-Quincy Hwy, ca. 9 mi N of Lake Madrone, ca. 19 mi NE of Oroville; Yellow Pine Forest. 914 Comment
  POM117646  Comandra umbellata subsp. californica C. C. Bruce 1898-05 1825 Butte Little Chico Comment
  CHSC66438  Convolvulus arvensis Vernon H. Oswald; Lowell Ahart 1996-6-10 7743 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Common on the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  UCD126193  Convolvulus arvensis A. A. Heller 1916-9-8 12657 Butte near Durham. Comment
  CHSC94160  Corallorhiza maculata Lowell Ahart 2006-6-24 12853 Butte On the west side of the dirt road (Ponderosa Way), on Cohasset Ridge, about 3 1/2 miles (air) northeast of Cohasset. 1130 Comment
  UC127773  Corallorhiza maculata Miss Kate Conger 1907-1 Butte Brush Creek Comment
  CHSC30950  Cordylanthus pilosus subsp. trifidus L. Ahart 1980-7-4 2450 Butte Ca. 1/2 mi se of the Oak Grove Cemetary, ca. 1 mi se of Hurleton. 600 Comment
  JEPS66509  Cordylanthus tenuis subsp. viscidus L. R. Heckard and T. I. Chuang 1971-8-15 2766 Butte Nimshew (site), nw of Magalia 853 Comment
  CHSC36967  Coreopsis grandiflora M. S. Taylor 1982-8-16 4994 Butte S end of Stirling City on both sides of the Skyway. 1036 Comment
  JEPS102542  Coriandrum sativum Lowell Ahart 2001-5-10 8742 Butte On the sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  SEINET12137282  Cornus nuttallii T. R. Norton 1977-1 11 Butte ca 6.5 NE of Paradise, 1.5 mi N of Magalia, 0.5 mi N of Magalia Reservoir, 0.25 mi E of the Skyway Comment
  SBBG25328  Cornus sessilis F. C. Raney 1964-9-10 Butte 10 mi NE of Feather Falls Comment
  SEINET10836292  Cortaderia Mary Susan Taylor, Lowell Ahart 1982-10-11 Taylor 5142 Butte T17N R1E n/ne sec 24. Pennington quad. Graylodge Wildlife Refuge, vicinity of check-in station, sw jct of Pennington & Rutherford Rds, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CDA34650  Cotoneaster lacteus L. Ahart 2009-8-23 16302 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. Comment
  CHSC102504  Cotoneaster lacteus Lowell Ahart 2009-5-30 15802 Butte On the south side of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 311 Comment
  JEPS124182  Cotoneaster pannosus Lowell Ahart 2015-2-20 19934 Butte Just south of the railroad underpass, on the west side of Hountoon Street, about 50 yards north of Kitrick Avenue, Oroville. Comment
  CHSC28638  Crassula tillaea M. S. Taylor 1979-3-31 1972 1/2 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
  JEPS107326  Crassula tillaea Lowell Ahart 2005-4-14 11726 Butte About 20 feet east of the railroad tracks, north of Spruce Street, Gridley 28 Comment
  CHSC107899  Crucianella angustifolia L. P. Janeway 2011-6-29 10414 Butte Northern High Sierra Nevada. Along Encino Grande (Ponderosa Way) 1.0 road km west of the top of Bloomer Hill; 0.7 air km west-northwest of the top of Bloomer Hill. 820 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
  CHSC115369  Crypsis schoenoides Lowell Ahart 2015-4-24 20077 Butte Normal size plants, on dry to wet bare soil, bottom and sides (road edges) of a large duck field. 19 Comment
  CHSC66367  Crypsis schoenoides Vernon H. Oswald 1996-6-20 7826 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bed of a marsh at the SW corner of Tract 2, Sanctuary II. 33 Comment
  HSC11252  Crypsis vaginiflora C. V. Piper 1921-5-30 838 Butte Blavo, near Chico Comment
  JEPS122249  Crypsis vaginiflora Lowell Ahart 2014-9-23 19875 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
  POM266636  Crypsis vaginiflora J. C. Roos 1939-7-3 1521 Butte a few miles southeast of Chico Comment
  CHSC111231  Cryptantha 2012-5-31 Butte Comment
  CHSC113401  Cryptantha affinis Lowell Ahart 2014-7-7 19562 Butte About 5 yards east of the Skyway, about one-mile north of Stirling City. 1142 Comment
  CHSC33419  Cryptantha flaccida R. A. Schlising; J. D. Jokerst 1980-7-2 3820 Butte 1.4 mi S of junction of Nimshew and Centerville Roads at Nimshew, along Centerville Road. Comment
  CHSC40754  Cryptantha flaccida Lowell Ahart 1985-5-6 4931 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  SEINET10497273  Cryptantha flaccida Lowell Ahart 1984-5-19 Ahart 4609 Butte On a small hill a little east of Kunkle Creek, ca. 0.5 mi N of Kunkle Reservoir, ca. 2 mi S of Paradise, on E side of Pentz-Magalia Hwy; Foothill Woodland; 600 m. 600 Comment
  SEINET516434  Cryptantha flaccida Lowell Ahart 1983-1 4119 Butte Normal size plant, growing on dry red rocky soil along Ponderosa Way, about 2 mi. SE of the intersection of the Oroville Quincy Hwy and Ponderosa Way (Big Ridge Rd.), about 15 mi NE of Oroville. 457 Comment
  UC78586  Cryptantha flaccida Mrs. R. M. Austin Apr 1896 Butte Little Chico Canyon Comment
  JEPS108983  Cryptantha intermedia Lowell Ahart 2006-6-9 12656 Butte On the north side of Bardees Bar Road, east of the large stream, about 1/10 mile north of the poor bridge across the North Fork of the Feather River at Bardees Bar, about 2 3/4 miles (air) southwest of Pulga 354 Comment
  CHSC37212  Cryptantha milobakeri L. Ahart 1982-7-28 3712 Butte On the bottom of the water ditch, ca. 1/8 mi n of Pacific Mine, ca. 5 mi e of La Porte. 1700 Comment
  SD4203  Cryptantha torreyana E. B. Copeland 1929-7-29 Butte Jonesville 1700 Comment
  CHSC3012  Cryptomeria japonica Carl Pejsa 1958-4-19 30 Butte Bidwell Park Forestry Station. Comment
  CHSC100476  Cupressus lusitanica Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15423 Butte In the east part of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  CAS-BOT-BC85566  Cupressus macnabiana C. B. Wolf; E. R. Johnson 1934-10-5 6160 Butte Sierra Nevada Foothills, At Magalia 701 Comment
  UCD69257  Cupressus macnabiana D. Sanchez-Mata; D. Sanchez-Mata and P. Rodriguez-Rojo 1997-8-16 s.n. Butte Magalia near Magalia Reservoir. 680 Comment
  SEINET10546819  Cuscuta Mary Susan Taylor 1978-5-7 Taylor 1604 Butte In and around Richvale vernal pool area, ca. 20 mi S of Chico, on W side of Hwy 99; Valley Grassland. 30 Comment
  SEINET10496602  Cuscuta californica Lowell Ahart 1991-9-6 Ahart 6711 Butte On the north side of Rutherford Road, about 1/8 mile west of Pennington Road, east of Parking Area 5, Gray Lodge Waterfowl Management Area, about 10 miles south- west of Gridley. Freshwater Marsh. T17N R1E S13. 30 Comment
  CHSC50547  Cuscuta californica var. californica Vernon Oswald; Lowell Ahart 1990-7-5 4348 Butte Butte Meadows at a meadowlike opening on the north side of Humboldt Rd just west of Scout Rd. 1325 Comment
  CHSC42955  Cuscuta indecora Lowell Ahart 1987-7-19 5840 Butte Along the Midway, about 1/2 mile south of Durham. 48 Comment
  CHSC113062  Cuscuta occidentalis Lowell Ahart 2013-7-16 18838 Butte On dry smoothed dredge tailings, northwest of a large wash, about 1/2 mile southeast of Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 54 Comment
  JEPS110300  Cuscuta pentagona Lowell Ahart 2006-9-13 13313 Butte South edge of the North Fork of the Feather River, just 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
  CHSC55056  Cuscuta subinclusa Lowell Ahart 1991-8-25 6706 Butte North side of the dirt road, Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), east of Oroville-Quincy Hwy, about 5 miles (air) north-east of Brush Creek. 1097 Comment
  UCD126343  Cuscuta subinclusa L. E. Hazeltine 1916-7-28 s.n. Butte Chico. Comment
  POM76966  Cycladenia humilis Mrs. R. M. Austin, C. C. Bruce 1898-05 s.n. Butte Doc Mill Comment
  UC725368  Cycladenia humilis var. humilis A. A. Heller 1938-7-20 15275 Butte ridge between Inskip and Chaparral 1524 Comment
  CHSC3377  Cydonia oblonga Robert L. Smith 1966-3-30 51 Butte U.S. Plant Introduction Station, Chico. Comment
  CHSC99547  Cymopterus terebinthinus var. californicus L. P. Janeway 2008-6-15 9415 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  JEPS105911  Cymopterus terebinthinus var. californicus Lowell Ahart 2004-8-2 11334 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
  UCD80536  Cynodon dactylon CNPS SN Foothill Team 2006-5-25 SNNR 0936 Butte Horning Ranch (private). 119 Comment
  SEINET10518396  Cynosurus echinatus K. Henegar 1969-5-15 Henegar 55 Butte Upper Bidwell Park, near Big Chico Creek at Bear Hole. Shaded area, sandy soil. Comment
  CHSC76011  Cyperus difformis Lowell Ahart; Vernon H. Oswald 1999-8-13 8139 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry. 32 Comment
  JEPS104238  Cyperus difformis Lowell Ahart 2003-6-23 10314 Butte In a rice field, Peter Ahart Ranch, ca 300 yd e of the Palermo Honcut Highway, ca 2 1/8 mi n of Honcut, ca 12 mi south of Oroville. 30 Comment
  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
  CHSC111168  Cyperus eragrostis Lowell Ahart 2012-6-14 18191 A Butte Southwest of CARD Community Center, Lower Bidwell Park, Chico. 62 Comment
  CHSC25335  Cyperus eragrostis M. P. Hayes 1977-8-13 34 Butte Butte College Campus, football playing fields near a wet standpipe. Intersection of Pentz and Clark Roads. 91 Comment
  CHSC68384  Cyperus eragrostis L. P. Janeway 1988-6-29 2905 Butte Spring where Crouch Ravine fades into Coon Ridge; 1/4 mi south of the Skyway, 2.9 mi east of the Skyway bridge over Butte Creek. 170 Comment
  CAS-BOT-BC114600  Cyperus eragrostis L. P. Janeway 1987-9-7 2582 Butte Chico E side, along Forest Ave between Little Chico Creek and I. 20th St. 82 Comment
  SEINET10466872  Cyperus eragrostis Mary Susan Taylor 1979-10-3 Taylor 2223 Butte T23N R3E center of E eighth of sec 33. Riparian Woodland in Butte Creek Canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Road, ca. 7 mi E of Honey Run Covered Bridge. 244 Comment
  CHSC69730  Cyperus erythrorhizos Lowell Ahart 1997-10-24 7944 Butte About 200 yards north of the South Fork of the Feather River and on the east side of Sucker Creek, strand of Lake Oroville, about 1/4 mile west of the Ponderosa Dam. 274 Comment
  CAS-BOT-BC114376  Cyperus erythrorhizos Lloyd 1940-6-21 7 Butte Grey Lodge Refuge, 9 mi N of Gridley Comment
  CHSC68393  Cyperus esculentus L. P. Janeway 1986-10-15 1925 Butte In the City of Chico; weedy area along fence between plant nursery and Memorial Way (across from Bidwell Junior High School). 60 Comment
  JEPS95884  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
  SEINET3441886  Cyperus fuscus Unknown 2000-7-23 8603 Butte Chico, Chico, about 12 air miles southwest, about 2 miles southeast of Ordbend, about 1 mile southeast of Ord Ferry, northwest of Parrott Landing, east side of the Sacramento River 30 Comment
  CHSC42900  Cyperus niger Lowell Ahart 1987-7-3 5767 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
  CHSC68403  Cyperus niger L. P. Janeway 1988-6-26 2884 Butte Southeast rim of Coon Ridge overlooking Nance Canyon; about 0.6 mi northeast of the high voltage power lines. 182 Comment
  UCR263570  Cyperus niger Lowell Ahart 2000-8-23 8662 Butte Sacramento Valley, about 1/2 mile west of Pacific Heights road, Oroville Wildlife Area, about 4 miles (air) southwest of Oroville 43 Comment
  SEINET227301  Cyperus niger Lowell Ahart 1983-9-17 4432 Butte Ca. 1/8 mile NE of Kunkle Reservoir S of Paradise 600 Comment
  SEINET10467155  Cyperus niger var. capitatus Mary Susan Taylor 1977-8-16 Taylor 1447 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CAS-BOT-BC114063  Cyperus squarrosus E. B. Copeland 1931-7-17 612 Butte Jonesville. 1700 Comment
  UCD141102  Cyperus squarrosus A. A. Heller 1917-7-28 12840 Butte Butte Meadows. 1280 Comment
  UCD169396  Cyperus strigosus L. P. Janeway 2001-6-13 7168 Butte Sacramento Valley. On east side of the Sacramento River about 1.8 km southeast of Ord Ferry Road bridge. 29 Comment
  CHSC23703  Cystopteris fragilis M. S. Taylor 1976-5-5 1118 Butte On s side of Bear Creek, ca. 1/4 mi s of Hwy 70, ca. 30 mi ne of Oroville. Comment
  CHSC99557  Cystopteris fragilis L. P. Janeway 2008-6-15 9412 Butte High Cascade Range. North end of Carpenter Ridge; south side of Humboldt Road 5.0 road km northeast of Hwy 32. About half way up the steep open slope and vicinity of a dry bedrock drainage swale. 1448 Comment
  JEPS94943  Cystopteris fragilis Lowell Ahart 1997-8-1 7766 Butte about 1/4 mi e Table Mountain (on e side of creek, where basalt is eight sided, about 8 air mi ne of Stirling City); Little Kimshew Creek, Snow Meadow 1524 Comment
  SEINET10535614  Cystopteris fragilis Mary Susan Taylor 1978-6-24 Taylor 1659 Butte Montane Meadow, on N side of Scotts John Road, ca. 3 mi E of its junction with Old Humboldt Road, ca. 5 mi E of Jones ville; Yellow Pine Forest. 1676 Comment
  UC1609048  Danthonia californica Lowell Ahart 1993-8-29 7121 Butte about 2 1/2 mi ne Bald Mountain (about 6 1/2 mi ne of Stirling City) 1584 Comment
  CHSC42901  Danthonia californica var. americana Lowell Ahart 1987-7-8 5812 Butte Near a stream, along Walker Plains Road, about 1/8 mile north of Coyote Gap, about 5 miles east of Pulga. 1280 Comment
  CHSC74039  Danthonia californica var. americana B. Castro 1998-7-8 802 Butte Sunset Hill Meadow. Ca 2 air mi W of Forbestown, ca 0.2 mi S of Sunset Hill fire lookout and 300 ft S of Forbestown Rd, at headwaters of New York Creek. Meadow at end of old dirt rd at E edge of old homestead site. 929 Comment
  CHSC52365  Danthonia unispicata L. P. Janeway 1989-5-17 3257 Butte Along rd to Forbestown Diversion Dam 1.4 mi from Forbestown Rd. Along old logging rd. 861 Comment
  CHSC115446  Darmera peltata M. Sutton; K. Schierenbeck 2013-5-5 48 Butte Deer Creek. 657 Comment
  CAS-BOT-BC420353  Darmera peltata C. C., Mrs. Bruce 1898-2-1 2410 Butte unspecified Comment
  CHSC31858  Datura wrightii L. Ahart 1975-7-7 855 Butte Near home near a building; Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38722  Datura wrightii Vernon Oswald 1983-10-8 1054 Butte Upper Bidwell Park, Chico, on the south edge of the parking lot at Five Mile Recreation Area. 85 Comment
  JEPS117528  Daucus carota Lowell Ahart 2010-9-13 17153 -A Butte Open dry areas, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo 31 Comment
  CHSC56763  Delphinium depauperatum R. A. Schlising; R. Banchero 1980-7-31 3948 Butte NE of Snag Lake. In meadows. 1828 Comment
  UC726361  Delphinium gracilentum A. A. Heller 1919-5-18 13176 Butte creek between Appleton and Coutolenc; Mosquito Creek 609 Comment
  CHSC104822  Delphinium hansenii subsp. hansenii Lowell Ahart 2010-6-1 16757 Butte On the south side of the Guardians Trail or South Rim Trail, under the power lines, upper Bidwell Park, about 2 miles (air) east of Chico. 144 Comment
  UC765959  Delphinium hansenii subsp. hansenii Robert F. Hoover 1936-5-21 1166 Butte hills 7 mi n Chico Comment
  SEINET10833581  Delphinium hesperium Lowell Ahart, Peter Ahart 1983-6-21 Ahart 4079 Butte T20N R5E sec 6. Along Bloomer Hill Rd, ca. 3/4 mi w of Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 425 m. 425 Comment
  CAS-BOT-BC9922  Delphinium nudicaule Ira L. Wiggins 1925-3-22 1479 Butte Chico Creek canyon about five miles above Chico Comment
  CHSC3562  Delphinium nudicaule R. D. Briggs 1966-3-2 51 Butte Salmon Hole,' 4 miles N.E. of the Bidwell Park golf course, Chico. Ledge above creek. Comment
  CHSC56872  Delphinium nudicaule K. O'Connor-Henry 1985-3-8 3 Butte North Table Mtn., e of Cherokee Rd. and 3 mi. n of Oroville. 329 Comment
  POM99315  Delphinium nudicaule C. C. Bruce 1897-04 s.n. Butte Butte Creek. Comment
  CAS-BOT-BC8027  Delphinium nuttallianum Herbert Faulkner Copeland 1929-6-12 1211 Butte Jonesville, near north Willow Creek 1524 Comment
  UC854270  Delphinium nuttallianum A. A. Heller 1915-6-27 12038 Butte Jonesville Sierra Nevada 1676 Comment
  CAS-BOT-BC121613  Delphinium patens subsp. patens A. A. Heller 1919-5-17 13158 Butte Banks of Feather River near Stirling Comment
  CHSC38164  Delphinium patens subsp. patens Vernon Oswald 1983-3-13 149 Butte Upper Bidwell Park, Chico, near Yahi Trail about 800 ft e of Parking Area L at Diversion Dam. Near the top of a cliff. 121 Comment
  CHSC52508  Delphinium variegatum Patricia Collins 1981-4-22 11 Butte Field near the bank of Singer Creek, ca. 21 km nw of Chico. Intersection of Broyles rd. and Cana Pine Creek rd., .4 km n on Cana Pine Creek road. 56 Comment
  CHSC53302  Delphinium variegatum Pauleen Broyles 1977-4-11 95 Butte Ca. .8 km se of Covered Bridge on Butte Creek, ca. 5.6 km e of Chico. 165 Comment
  SEINET10536090  Delphinium variegatum f. superbum Mary Susan Taylor 1976-3-9 Taylor 1023 Butte Valley Grassland, on Burton's Mesa, ca. 500 yds N of the Skyway, ca. 13 mi E of Chico. 457 Comment
  CHSC77438  Delphinium variegatum subsp. variegatum Tim Stofer 1997-4-13 12 Butte At the shooting range 100 yards from the head of the South Rim Trail off South Park Dr. in Upper Bidwell Park. 76 Comment
  JEPS122069  Deschampsia cespitosa subsp. cespitosa Lowell Ahart 2014-7-13 19656 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir Comment
  CAS-BOT-BC192662  Deschampsia danthonioides A. A. Heller 1914-4-17 11301 Butte Hills 8 miles north of Oroville Comment
  SEINET10788955  Deschampsia danthonioides Roland McKee 1909-1 McKee s.n. Butte Chico. Comment
  UCD62771  Deschampsia danthonioides P. B. Kennedy 1914-5-1 s.n. Butte Chico. Comment
  CHSC59045  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte On the high sides of a snow lake, on the south side of Coon Hollow, about 2 (air) miles north-east of Philbrook Reservoir. 1737 Comment
  UC1594695  Deschampsia elongata Lowell Ahart 1992-7-21 6808 Butte ca. 2 (air) mi. n.e. of Philbrook Reservoir (s. side of Coon Hollow) 1737 Comment
  SEINET10508568  Deschampsia elongata Lowell Ahart, Peter Ahart 1984-6-10 Ahart 4700 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown; Yellow Pine Forest; 700 m. 700 Comment
  SEINET10933470  Deschampsia elongata A. Arthur Heller 1917-7-26 Heller 12846 Butte Open places in the yellow pine forest, Butte Meadows. Douglas fir and incense cedar are also plentiful. Common shrubs are Ceanothus cordulatus and Uva-ursi. 1402 Comment
  SEINET11687271  Deschampsia elongata L. Ahart, Ahart, P. 1984-1 4700 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  CAS-BOT-BC388457  Dianthus armeria Lowell Ahart 1983-6-21 4065 Butte Near a branch of Canyon Creek, just off of Bloomer Hill Road, about 1/2 mile west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 400 Comment
  CHSC88241  Dianthus armeria subsp. armeria Lowell Ahart 2004-7-11 11223 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
  JEPS115600  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
  CHSC25353  Dicentra formosa Marc P. Hayes 1977-4-22 13 Butte Ca. .5 km sw of Heinz creek, along small creek, ca. 200 m from its confluence and North Fork of Feather River. 450 Comment
  CHSC636  Dicentra formosa R. M. Staley 1952-7-13 Butte Ponderosa Way. 609 Comment
  CHSC19651  Dicentra formosa subsp. formosa K. R. Stern 1966-4-1 Butte Chico. Comment
  CHSC19650  Dicentra formosa subsp. oregana K. R. Stern 1966-3-31 Butte From Montreal Botanical Gardens; Planted in Chico. Comment
  UC143050  Dichelostemma capitatum Mrs. R. M. Austin Apr 1896 40 Butte Little Chico Creek Comment
  CAS-BOT-BC500057  Dichelostemma capitatum James L. Reveal 1988-6-3 7003 Butte Paradise, 0.2 mile south of Bennett Road along South Libby Road onto the northern end of Morgan Ridge,. 518 Comment
  CAS-BOT-BC500058  Dichelostemma capitatum Grace Kermode 1899-5-31 s.n. Butte Chico Comment
  RSA589908  Dichelostemma capitatum subsp. capitatum Michael A. Vincent, Robert M. Rhode, Jim Anowden 1996-3-29 7222 Butte North Table Mountain, W of Cherokee Rd., N of Oroville. S side Beatson Hollow, ca. 1.15 airmiles NW of entrance on Cherokee Rd. Comment
  CHSC4083  Dichelostemma multiflorum J. E. Bowlin 1967-4-21 27 Butte Ca. 3 feet n of Humbug Rd. and ca. 2.2 miles e of corner of Skyway and Humbug Rd., Chico. 60 Comment
  UCD139257  Dichelostemma multiflorum R. N. Raynor; H. A. Hannesson 1941-5-9 s.n. Butte 4 miles north of Gridley. Comment
  HSC32643  Dichelostemma multiflorum Gary S. Lester 1974-4-20 97 Butte 1 mi. E of Hwy. 99, Skyway Blvd. 61 Comment
  HSC38140  Dichelostemma multiflorum Thomas W. Nelson, Jane P. Nelson 1976-5-9 2444 Butte Intersection of Palermo Rd. and Hwy. 70, 4 mi. S of Oroville Comment
  SEINET12050315  Dichelostemma multiflorum Unknown 1985-1 5057 Butte Lumpkin Ridge, 1.5 mi E of Camp 18, about 8 mi NE of Feather Falls, 100 yds S of dirt road 975 Comment
  CAS-BOT-BC502515  Dichelostemma volubile A. A. Heller 1854-6-30 II 848 Butte 2 miles below Centerville in the Sierra foothills. Comment
  CHSC44383  Dichondra donelliana Lowell Ahart 1988-6-7 6035 Butte On the Henry Smith Ranch, about 1/4 mile west of the Oroville Bangor Highway, about 1/2 mile north-west of Bangor. 213 Comment
  CAS-BOT-BC209041  Digitaria sanguinalis Lowell Ahart 1987-8-30 5858 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  RSA703067  Digitaria sanguinalis L. Ahart 2004-8-30 11398 Butte in a young peach orchard, on the south side of O'Brien Road, about 100 yards east of Gilstrap Avenue, about 1 1/2 miles (air) southeast of Gridley 28 Comment
  UCD63991  Digitaria sanguinalis E. Wilson 1934-9-3 Butte Biggs Rice Station. Comment
  CHSC62335  Diospyros B. Castro 1990-5-6 421 Butte Within the Chico Tree Improvement Center at SE edge of Chico, via Morrow Lane, close to banks of a branch of Comanche Creek (or 'Edgar Slough'). 70 Comment
  CHSC38690  Diplacus grandiflorus Vernon Oswald 1983-5-23 545 Butte Upper Bidwell Park, Chico, near Chico Creek at the east end of Yahi Trail. On flood plain of creek. 207 Comment
  CHSC44806  Diplacus grandiflorus R. Banchero 1980-6-6 197 Butte Along Hwy 162 ca 1.7 mi N of Bidwell Bar Bridge, 5.3 mi S of the jct of Hwy 162 and Bald Rock Rd. 256 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-BC153217  Diplacus kelloggii A. A. Heller 1914-5-8 11374 Butte Plateau above Clear Creek on the Paradise road Comment
  CHSC44672  Diplacus kelloggii R. Banchero 1980-4-13 110 Butte Doe Mill Ridge, ca 2.0 mi SW of the Covered Bridge. 213 Comment
  CAS-BOT-BC153218  Diplacus kelloggii A. A. Heller 1921-3-27 13533 Butte Above Butte Creek near the bridge on the Honey Run road Comment
  CAS-BOT-BC153220  Diplacus kelloggii Mrs. J. H. Morrison 1932-4-3 s.n. Butte Durham Comment
  CAS-BOT-BC154032  Diplacus torreyi A. A. Heller 1914-6-24 s.n. Butte West Branch 1036 Comment
  SEINET8399956  Diplacus torreyi E. B. Copeland 1929-7-18 462 Butte Jonesville. 1550 Comment
  CHSC12183  Diplacus tricolor Lowell Ahart 1973-4-6 Butte Peter Ahart Ranch. 45 Comment
  CHSC84284  Distichlis spicata Lowell Ahart; John Dittes, Josephine Guardino, Steve Green 2003-5-27 10223 Butte About 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking Area L, Upper Bidwell Park, about 3 1/2 miles east of Manzanita Avenue, Chico. 121 Comment
  SEINET3450774  Distichlis spicata Lowell Ahart, Josephine Guardino, Steve Green 2003-5-27 10223 Butte Chico, Chico, about 3.5 miles east of Manzanita Avenue, about 100 yards west of the dirt road, west of Diversion Dam on Big Chico Creek, west of Parking area L, Upper Bidwell Park 120 Comment
  CDA35058  Dittrichia graveolens L. P. Janeway 2010-11-17 10220 Butte Sacramento Valley; Oroville; in gravel parking area at east side of Feather River Ranger District office (875 Mitchell Ave.) Comment
  JEPS115054  Dittrichia graveolens Lowell Ahart 2007-11-3 14577 Butte On the west side of Highway 70, about 100 yards north of Nelson Avenue, Thermalito 71 Comment
  CHSC3548  Dodecatheon clevelandii subsp. patulum Gary Dutton 1966-2-21 27 Butte Found N.W. of 99E on Neal Rd. about 1/2 mile. Comment
  CHSC52455  Dodecatheon clevelandii subsp. patulum Gary R. Koses 1979-3-13 5 Butte 6 mi E of Chico on Skyway; between Skyway and Mesa Restaurant. 152 Comment
  HSC67921  Dodecatheon clevelandii subsp. patulum J. P. Smith 1973-3-22 5930 Butte 2.1 mi. E of junction with Hwy. 99 and the road to Paradise 122 Comment
  CHSC13891  Dodecatheon hendersonii J. F. Goodwin 1972-3-11 182 Butte 0.5 mi se on Oregon Gulch Road from its intersection with Cherokee Road, Table Mountain, Oroville; sw side of road. Comment
  CHSC112599  Dopatrium junceum Lowell Ahart 2013-9-20 19058 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
  SEINET7072737  Downingia bacigalupii A. G. Vestal 1963-5-9 s.n. Butte About 11.8 miles north of Chico. UTM Zone 10, 594162mE, 4419666mN. Coordinate datum: NAD 27.) Comment
  RSA389175  Downingia bicornuta C. B. Wolf 1937-5-14 8673 Butte Sacramento Valley; 5 miles W of Chico on Hamilton City Road. Comment
  SD111949  Downingia bicornuta B. Ertter, Jeff Strachan and Lowell Ahart 1980-5-7 3290 Butte Peter Ahart Ranch, ca. 2.5 miles northnortheast of Honcut between Oroville and Marysville. 29 Comment
  JEPS105996  Downingia cuspidata Lowell Ahart 2004-4-4 10725 Butte Bottom of a vernal pool, about 1/4 mile east of Wilber Road, east of the high hill crossed by Wilber Road, pasture, about 3 miles (air) west of Thermalito 48 Comment
  UCD149944  Downingia insignis TBS 1967-5-9 s.n. Butte Gray Lodge. Comment
  CHSC13904  Downingia ornatissima M. Jaekel 1974-4-23 15 Butte On Humboldt Rd., ca. 1 mi. E of Old Chico city dump. Comment
  SEINET260310  Downingia ornatissima Lowell Ahart 1984-5-12 4602 Butte Peter Ahart Ranch ca. 2.5 mi NE of Honcut ca. 12 mi S of Oroville. Valley Grassland 50 Comment
  UC764554  Downingia ornatissima var. ornatissima R. F. Hoover 1936-5-21 1170 Butte 8 mi nw Chico Comment
  CHSC63633  Draperia systyla B. Castro; R. Zebell 1989-7-20 326 Butte Off the S end of Walker Plains, on steep W-facing slopes off W side of the Oro-Quincy Hwy. 1402 Comment
  CHSC11942  Drosera rotundifolia E. B. Copeland 1930-7-25 417 Butte Jonesville. ... Field redacted by CHSC, contact the data manager for more information 1500 Comment
  CHSC51866  Drosera rotundifolia L. P. Janeway 1987-7-5 2445 Butte 0.4 mi E on a spur rd from the Concow Rd, which is ... Field redacted by CHSC, contact the data manager for more information 1798 Comment
  UCD123991  Drosera rotundifolia Barry Rice 2011-7-20 BR 110709 Butte Mallory Meadow. 1350 Comment
  UC114407  Drymocallis glandulosa var. glandulosa Mrs. R. M. Austin July 1896 Butte Colby Comment
  JEPS115701  Drymocallis glandulosa var. reflexa Lowell Ahart 2009-5-23 15739 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highwat 32, about 10 miles northeast of Chico 234 Comment
  UC392207  Drymocallis hansenii E. B. Copeland 1929-7-25 Butte Jonesville 1550 Comment
  UC600380  Drymocallis lactea var. austiniae E. B. Copeland 1930-7-12 Butte above Jonesville (head of Butte Creek area); , above Jonesville 1900 Comment
  CHSC99551  Dryopteris arguta L. P. Janeway 2008-6-22 9420 Butte Northern Sierra Nevada Foothills. Canyon draining on east side of Dark Canyon Road 90 m north of the gate to the boat ramp into Lake Oroville. North-facing slope. 294 Comment
  JEPS104145  Dryopteris arguta Lowell Ahart 2003-6-30 10326 Butte Near the small stream, on the south side of Ponderosa Way, ca 2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 490 Comment
  SEINET10899878  Dryopteris arguta Mary Susan Taylor 1980-4-18 Taylor 2518 Butte W side of Humbug Road, ca. 1 mi S of Nimshew. With J.D. Jokerst. 610 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
  CHSC39017  Dudleya cymosa J. D. Jokerst; R. Schlising, M. Foster 1983-5-24 1783 Butte At the top of Bald Rock Dome in the Middle Fork of the Feather River. Comment
  CHSC113163  Dysphania botrys Lowell Ahart 2013-11-13 19232 Butte Below the high water line of Lake Oroville, along the sides of Sucker Creek, about 30 yards north of the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 244 Comment
  CHSC75996  Dysphania botrys Lowell Ahart; Vernon H. Oswald 1999-8-13 8178 Butte Disturbed area along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southwest of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC76310  Echinochloa colona Lowell Ahart 1999-9-21 8282 Butte Along the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  RSA722301  Echinochloa colona R. R. Halse 2006-8-2 6985 Butte At edge of a driveway along Mangrove Ave. by its intersection with E. 7th Ave. 29 Comment
  CHSC23131  Echinochloa crus-galli M. S. Taylor 1975-10-3 931 Butte At bridge over Little Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  JEPS120038  Echinochloa crus-galli Lowell Ahart 2011-10-29 17727 Butte On the south side of Biggs Princeton Road, about 500 yards west of Riceton Highway, about 1 miles northwest of Biggs. Comment
  SEINET6830746 Image available Echinochloa crus-galli L. Ahart 1984-9-17 4792 B Butte Peter Ahart Ranch, ca. 2.3 mi N and 0.3 mi E of Honcut, ca. 12 mi S of Oroville 50 Comment
  UCD61097  Echinochloa muricata P. B. Kennedy 1921-9-9 B Butte Rice Station, Biggs. Comment
  CDA1997  Echinochloa oryzicola G. D. Barbe, T. C. Fuller 1977-9-2 2335 Butte Rice Experiment Station, Biggs. 0 Comment
  SEINET10465417  Echinodorus berteroi Mary Susan Taylor 1977-8-16 Taylor 1451 Butte Butte College Campus, ca. 15 mi S of Chico. With Marc Hayes. 61 Comment
  CHSC115333  Elatine Lowell Ahart 2015-4-24 20071 Butte Normal size plants, on damp bare soil, bottom of a large duck field. 19 Comment
  CHSC78979  Elatine ambigua Vernon H. Oswald 2000-10-4 9974 Butte Rice Experiment Station; field on south side of Hwy 162 between the railroad and Riceton Rd. 30 Comment
  CHSC45272  Elatine californica Vernon Oswald 1988-4-18 3276 Butte Harter's Cherokee Ranch located on the w side of Hwy 99 between Hwy 149 and Dry Creek. 53 Comment
  CHSC80523  Elatine heterandra Lowell Ahart 2001-4-15 8729 Butte A deep ditch, southeast of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CAS-BOT-BC113740  Eleocharis acicularis E. B. Copeland 1929-7-19 344 Butte Jonesville, in very wet, grassy glade. Comment
  CHSC28856  Eleocharis acicularis J. D. Jokerst; T. B. Devine, D. Greenstein 1979-5-2 458 Butte Ca. 1.0 mi N of jct of Cherokee Rd and E edge of North Table Mt. 381 Comment
  JEPS123876  Eleocharis acicularis Lowell Ahart 2015-4-24 20062 Butte About 1 1/4 miles north of Rutherford Road, Gray Lodge Wildlife Area, about 6 1/2 miles (air) southwest of Gridley. Comment
  JEPS98285  Eleocharis acicularis Lowell Ahart 2000-5-11 8338 Butte 12 air miles SE of Oroville (along a small wash, 100 yds S of a dirt road, Peter Ahart Ranch, 1 1/2 mi N and 1 1/2 mi E of Honcut) 45 Comment
  JEPS98375  Eleocharis acicularis Lowell Ahart 2000-10-21 8711 Butte 2 1/4 air miles N of Biggs (100 ft N of Hamilton Road, about 1/8 mi E of Riceton Road, Rice Experiment Station) 30 Comment
  JEPS103109  Eleocharis decumbens L. P. Janeway, B. Castro 2002-7-7 7608 Butte High Cascade Range. Soggy sedge-dominated meadow below the head of Keyser Creek and just below the dirt road; 0.5 km east of Bald Mountain Lookout 1695 Comment
  JEPS98588  Eleocharis decumbens Lowell Ahart 2000-6-29 8541 Butte Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CAS-BOT-BC113367  Eleocharis engelmannii Beecher Crampton 1957-9-17 4623 Butte Biggs Rice Experiment Station, 5 mi NW of Biggs. Comment
  CHSC45172  Eleocharis engelmannii Lowell Ahart 1969-5-14 28 Butte Peter Ahart Ranch, about 2 miles north and 1/4 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC113368  Eleocharis engelmannii William Anderson 1960-6-4 s.n. Butte Experimental plots, Gray Lodge, Wildlife Management Area, Gridley. Comment
  CHSC102404  Eleocharis macrostachya Lowell Ahart 2009-6-30 15979 Butte On wet 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 Highway 32, about 10 miles northeast of Chico. 269 Comment
  CHSC68430  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1916 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  CHSC68431  Eleocharis macrostachya L. P. Janeway; C. A. Janeway 1986-10-5 1917 Butte About 1/2 mi from the west end of Wilson Landing Road. 42 Comment
  CHSC77999  Eleocharis macrostachya Lowell Ahart 2000-5-13 8339 Butte On the bottom of a small wash, south 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
  UC143747  Eleocharis macrostachya E. B. Copeland 1903-5-12 3182 Butte Chico Pacific Coast Comment
  CHSC112340  Eleocharis montevidensis Lowell Ahart 2013-7-9 18837 Butte East side of North Honcut Creek, at the end of the Lower Duck Hole, Peter Ahart Ranch, about 1 mile north and 2 3/4 miles east of Honcut, about 13 miles (air) southeast of Oroville. 44 Comment
  CHSC78564  Eleocharis obtusa Lowell Ahart 2000-9-4 8685 Butte Along the west margin of a large pond on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico. 32 Comment
  CHSC116302  Eleocharis pachycarpa Lowell Ahart 2015-11-18 20664 Butte On the west side of the Feather River, about 1/2 mile south of Palm Avenue, about 1 1/2 miles southeast of the intersection of Palm Avenue and Larkin Road, about 5 miles (air) northeast of Gridley. 26 Comment
  JEPS88549  Eleocharis quadrangulata Vernon H. Oswald and Lowell Ahart 1996-7-22 8092 Butte U.S. Fish and Wildlife Service parcel between 7 Mile Lane and Sacramento River (on s side of Tract 3.1, Sanctuary II); Sacramento River National Wildlife Refuge, Llano Seco Unit 32 Comment
  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
  SEINET7587007 Image available Eleocharis quinqueflora Lowell Ahart 2000-6-29 8542 Butte On the northwest side of Concow Road at Flea Meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  CHSC116025  Eleocharis radicans Lowell Ahart 2015-10-20 20567 Butte On the west side of the Feather River, about half way of and east of One Mile Pond, about 6 miles (air) east of Biggs. 26 Comment
  CHSC69737  Eleusine indica Lowell Ahart 1997-10-25 7946 Butte Lawn, at the Butte County Historical Society museum, Oroville. 60 Comment
  CHSC31636  Elodea canadensis L. Ahart 1977-11-22 1610 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CAS-BOT-BC227295  Elymus elymoides E. B. Copeland 1929-7-24 340 Butte Jonesville 1575 Comment
  UCD80544  Elymus elymoides CNPS SN Foothill Team 2005-5-5 SNFN 0158 a Butte City of Chico, Upper Bidwell Park, off Upper Bidwell Park Road, approximately 3/4 mile from the north end of the road, on the south side (below) of the road. 233 Comment
  CHSC25268  Elymus glaucus M. S. Taylor 1977-6-25 1364 Butte On Sacramento River, ca. 10 mi e of Chico on River Rd. 30 Comment
  CHSC9346  Elymus glaucus V. Hagaman 1968-5-3 582 Butte North end of Magalia, by railroad bridge. Comment
  UCR143543  Elymus glaucus H. F. Copeland 1930-7-21 1341 Butte Jonesville 1524 Comment
  CAS-BOT-BC203418  Elymus glaucus subsp. glaucus Lowell Ahart 1988-5-30 6015 Butte Near the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 274 Comment
  CAS-BOT-BC203420  Elymus glaucus subsp. glaucus Lowell Ahart 1987-7-8 5808 Butte Along Big Bar Mountain Road, about 1 mile south-west of Coyote Gap, about 5 miles east of Pulga 1280 Comment
  CHSC102158  Elymus glaucus subsp. glaucus Lowell Ahart 2009-5-30 15794 Butte On dry soil, on the east side of Big Chico Creek, about 30 yards south of the gate, on both sides of north side of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway32, about 10 miles northeast of Chico. 269 Comment
  CHSC66457  Elymus glaucus subsp. glaucus Vernon H. Oswald; Lowell Ahart 1996-6-10 7732 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC43290  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1987-9-18 5887 Butte About 1 mile south-west of the crossing across Fall River, about 1 mile north-east of Camp 18, north-east of Feather Falls. 1310 Comment
  CHSC68915  Elymus stebbinsii subsp. septentrionalis Lowell Ahart 1997-7-11 7744 Butte Road cut, on the 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 about 2 miles (air) northeast of Stirling City. 1219 Comment
  CHSC38818  Elymus triticoides Vernon Oswald 1983-5-31 589 Butte Upper Bidwell Park, Chico, beside the trail on the n side of Chico Creek at the power lines. 91 Comment
  CHSC44912  Elytrigia intermedia subsp. intermedia Lowell Ahart 1988-7-24 6133 Butte Along the south side of Ponderosa Way, about 1/2 mile north-west of the intersection of Lower Forbestown Road, west of Sunset Hill, near Forbestown. 731 Comment
  CHSC59033  Elytrigia intermedia subsp. intermedia Lowell Ahart 1992-8-2 6912 Butte East of the intersection, about 1/2 mile north of Flea Valley, about 4 1/2 miles (air) north-east of Concow Reservoir. 1158 Comment
  POM219494  Epilobium brachycarpum H. F. Copeland 1928-8-29 404 Butte Neighborhood of Jonesville, valley of Butte Creek. Comment
  CHSC12029  Epilobium canum subsp. latifolium R. N. Bowman 1971-9-27 56 Butte Ca. 2.0 mi. se of intersection of Skyway and Coutelenc Rd. and ca. 200 yds. sw of Coutelenc Rd. 121 Comment
  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
  CHSC94033  Epilobium ciliatum subsp. ciliatum R. D. Fischer 2005-6-12 744 Butte Sierra Nevada foothills, off Hwy. 32, about 4 miles east of Chico off 10 Mile House Road in Bidwell Park. Collection made at bottom of trail near Big Chico Creek from a wet meadow drainage ditch adjacent road/trail. 219 Comment
  CHSC94760  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-9-13 13325 Butte South edge of the North Fork of the Feather River, about 100 yards west of the Cresta Power House, north side of Highway 70, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 437 Comment
  CHSC95136  Epilobium ciliatum subsp. glandulosum Lowell Ahart 2006-11-12 13542 Butte Unfarmed rice field, Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  UC600555  Epilobium ciliatum subsp. glandulosum H. F. Copeland 1932-7-21 Butte near Kennedy's Meadow; Jonesville Comment
  SEINET9070861 Image available Epilobium ciliatum subsp. glandulosum E. B. Copeland 1929-1 388 Butte Jonesville 1500 Comment
  JEPS104290  Epilobium densiflorum Lowell Ahart 2003-6-30 10330 Butte Near the small stream, on the n side of Ponderosa Way, ca 1 1/2 mi (by road) sw of the Ponderosa Dam, ca 2 mi (air) nw of Forbestown. 404 Comment
  UC600554  Epilobium glaberrimum subsp. glaberrimum H. F. Copeland 1932-7-21 Butte edge of Kennedy's Meadow Jonesville Comment
  CHSC70339  Epilobium minutum R. A. Schlising 1980-6-14 3709 Butte NE of Oroville at Little Bald Rock. 1051 Comment
  HSC16315  Epilobium minutum L. S. Rose 1963-6-2 63071 Butte 2 mi. S of Pulga, N Fork of the Feather River 579 Comment
  CHSC113488  Epilobium oregonense Lowell Ahart 2014-7-10 19622 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  JEPS119903  Epilobium pallidum Lowell Ahart 2012-5-31 18124 Butte About half way between Salmon Hole trail and Parking Area O, Upper Bidwell Park. Comment
  CHSC66067  Equisetum arvense Vernon H. Oswald 1996-5-22 7618 Butte U. S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. Sacramento River National Wildlife Refuge, Llano Seco Unit. 30 Comment
  RSA684652A  Equisetum arvense Michael A. Vincent 1962-4-15 180 Butte 1 mile S of Stirling City on Skyway Comment
  CAS-BOT-BC57854  Equisetum hyemale subsp. affine E. B. Copeland 1929-7-6 330 Butte Jonesville. Comment
  CHSC31516  Equisetum hyemale subsp. affine L. Ahart 1977-6-16 1416 Butte On both sides of North Honcut Creek, 3.0 mi ne of Honcut near Peter Ahart Ranch. 50 Comment
  CAS-BOT-BC57254  Equisetum laevigatum Lowell Ahart 1989-5-28 6288 Butte south of Oregon Gulch Road, about 1/2 mile north of the Cemetery, about 1/4 miles west of Rocky Point, 335 Comment
  CHSC35321  Equisetum telmateia subsp. braunii M. S. Taylor; K. Tharp 1982-4-8 4288 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitor's Center, Oroville. 243 Comment
  CHSC51032  Eragrostis cilianensis Lowell Ahart 1990-8-15 6594 Butte Along a wash, below the high water line of Lake Oroville, east of the Enterprise Boat Launch Area, about 1/4 mile north-werst of the Enterprise Bridge across Lake Oroville. 228 Comment
  CAS-BOT-BC204532  Eragrostis curvula Lowell Ahart 1984-5-19 4608 Butte Along the edges of Highway 70, about 1 mile south of the intersection of Cherokee Road and Highway 70, about 12.5 miles north of Oroville 300 Comment
  CAS-BOT-BC284086  Eragrostis pectinacea var. pectinacea John Thomas Howell 1961-9-22 36786 Butte North Fork of Feather River ne. of Pulga, Sierra Nevada Comment
  CHSC34134  Eragrostis pectinacea var. pectinacea L. Ahart 1981-9-19 3188 Butte On edges of pond ca. 100 m n of Cresta Powerhouse, a little e of Feather River, along Hwy 70, ca. 12 mi s of Storrie. 550 Comment
  JEPS88562  Eragrostis pectinacea var. pectinacea Vernon H. Oswald and Lowell Ahart 1996-6-10 7733 Butte U.S. Fish and Wildlife Service parcel between Seven Mile Lane and Sacramento River (on the Sacramento River at the n end of the Riparian Sanctuary); Sacramento River National Wildlife Refuge, Llano Seco Unit 28 Comment
  CHSC112629  Eragrostis pilosa var. pilosa Lowell Ahart 2013-10-16 19117 Butte South edge of the paved road, about 100 yards southeast of the restroom, near end of road to the Larkin Road Boat Launch Area, about 1/4 mile west of Larkin Road, about 2 miles (air) southwest of the Oroville Airport. 28 Comment
  CHSC83171  Eragrostis pilosa var. pilosa Beecher Crampton 1963-9-9 6884 Butte Honcut. Meadow along road. Comment
  JEPS120165  Eragrostis pilosa var. pilosa Lowell Ahart 2012-8-22 18421 Butte South edge of parking area at the restroom, end of road to the Larkin Road Boat Lunch Area, about 1/4 mile west of Larking Road, about 2 miles (air) southwest of the Oroville Airport. Comment
  CHSC91269  Eremogone cliftonii L. P. Janeway 2005-5-29 8410 Butte Northern High Sierra Nevada. 0.2 km northwest of Concow Road at the gap between the head of Rock Creek and the Little Kimshew Creek drainage. Steep east-facing slope. 1478 Comment
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Jul 8 2014
  CAS-BOT-BC291277  Ericameria bloomeri A. A. Heller 1928-7-25 14704 Butte Butte Creek House Comment
  CAS-BOT-BC291278  Ericameria bloomeri E. B. Copeland 1930-8-26 s.n. Butte Jonesville 1550 Comment
  CHSC61630  Ericameria bloomeri Lowell Ahart 1993-9-8 7172 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  CHSC61631  Ericameria bloomeri Lowell Ahart 1993-9-8 7170 Butte Ridge top, about 1 mile east of Snow Mountain. 2103 Comment
  CHSC110255  Ericameria nauseosa var. speciosa L. P. Janeway 2012-10-11 11073 Butte Northern High Sierra Nevada. Plumas National Forest; southwest-ern end of Rocky Ridge, 0.8 km west of Ponderosa Way/Rim Road, near high-voltage power lines. 895 Comment
  CHSC28542  Ericameria nauseosa var. speciosa M. S. Taylor; J. D. Jokerst 1979-10-13 2261 Butte Jordan Hill Rd, ca. 5.3 mi n of its jct with Concow Rd, ca. 2 mi e of Paradise. 609 Comment
  CAS-BOT-BC296824  Erigeron divergens A. A. Heller; H. E. Brown 1902-5-6 5463 Butte Berry Canyon near Clear Creek 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
  CAS-BOT-BC295170  Erigeron inornatus John Thomas Howell 1955-6-15 30476 Butte Paradise 518 Comment
  CAS-BOT-BC295161  Erigeron inornatus Lowell Ahart 1981-7-7 2913 Butte East of the bridge across Rocky Honcut Creek, Swedes Flat Road, ca. 7 mi. N of Bangor 350 Comment
  UC127750  Erigeron inornatus var. inornatus Miss Kate Conger 1907-1-1 Butte Brush Creek Comment
  RSA4149  Erigeron lassenianus E. B. Copeland 1929-7-17 489 Butte Above Jonesville 2000 Comment
  RSA774145  Erigeron lassenianus L. Ahart 2010-9-21 17227 Butte South side of a poor dirt road, about 1 air mile NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1900 Comment
  CHSC37500  Erigeron sumatrensis J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1677 Butte Top of North Table Mt. north of Cherokee Rd. Adjacent of basalt outcrop. 381 Comment
  CAS-BOT-BC216045  Eriodictyon californicum Helen M. Edwards 1917-6-1 s.n. Butte De Sabla Comment
  CHSC30839  Eriogonum luteolum var. luteolum M. S. Taylor 1978-7-18 1670 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. 701 Comment
  CHSC39559  Eriogonum luteolum var. luteolum Lowell Ahart 1983-7-24 4205 Butte Found at the Forbestown Res., about 5 miles northeast of Forbestown. 450 Comment
  CAS-BOT-BC261717  Eriogonum nudum var. oblongifolium John Thomas Howell 1975-6-15 51120 Butte Paradise. Skyway near Clark Road 609 Comment
  CAS-BOT-BC261718  Eriogonum nudum var. oblongifolium A. A. Heller 1914-7-22 11585 Butte Little Summit near Butte Meadows 1463 Comment
  JEPS117630  Eriogonum nudum var. oblongifolium Lowell Ahart 2010-9-12 17149 Butte Below the high water line of Lake Oroville, about 150 yards north of the South Fork of the Feather River, about 50 yards east of Sucker Creek, about 1/4 mile (air) northwest of the Ponderosa Dam 243 Comment
  JEPS87618  Eriogonum nudum var. oblongifolium Lowell Ahart 1994-10-16 7563 Butte about 3/4 mi sw along dirt road Forbestown Reservoir Dam (near creek, about 2 air mi n and 3 1/2 mi e of Forbestown); Woodleaf Creek 762 Comment
  CAS-BOT-BC269842  Eriogonum nudum var. pubiflorum E. B. Copeland 1930-7-16 s.n. Butte Jonesville 1500 Comment
  CHSC39136  Eriogonum nudum var. pubiflorum R. A. Schlising; K. Tarp 1982-7-24 4340 Butte E of Stirling City, at Creek in Breakneck Canyon. 1417 Comment
  CAS-BOT-BC367999  Eriogonum roseum Richard R. Halse 2006-8-2 6984 Butte Chico; in the Lindo Channel Greenway where it crosses under Mangrove Ave. 92 Comment
  CHSC45489  Eriogonum roseum Lowell Ahart 1977-10-19 1603 Butte Near North Honcut Creek, Peter Ahart Ranch, about 3/4 mile north and 2 1/2 miles east of Honcut, about 12 miles south of Oroville. 42 Comment
  CHSC59563  Eriogonum roseum Lowell Ahart 1992-9-20 2923 Butte Below the high water line of Lake Oroville, about 1/8 mile west of the Enterprise Boat Launch Ramp, about 3/4 mile south-west of Rocky Point. 243 Comment
  JEPS87143  Eriogonum spergulinum var. reddingianum Lowell Ahart 1992-7-29 6876 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  LA207013  Eriogonum spergulinum var. reddingianum E. B. Copeland; 1931-7-11 sn Butte Jonesville, ridge between Jones and North Willow Creek Comment
  JEPS48320  Eriogonum ursinum Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2693 Butte Pulga Bridge, west side North Fork of Feather River, Pulga Bridge 472 Comment
  POM220118  Eriogonum ursinum H. F. Copeland 1928-8-29 441 Butte Neighborhood of Jonesville. Dry rocks in Butte Creek Canyon Comment
  RSA31981  Eriogonum ursinum A. A. Heller 1938-5-28 15116 Butte Feather River Hwy, 23 miles from Oroville Comment
  UC1594628  Eriogonum ursinum Lowell Ahart 1992-7-29 6884 Butte about 3/4 mi nw Lotts Lake (about 1 mi ne of the Carr Mine) 1798 Comment
  SEINET10821160  Eriophyllum lanatum Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7029 Butte 2.6 miles west of Paradise on Chico Road. 610 Comment
  UCR190825  Eriophyllum lanatum 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
  CHSC100919  Eriophyllum lanatum var. croceum R. A. Schlising; Arthur Dawson, Don Burk 1982-6-2 4280 Butte North of Oroville and north of Concow Reservoir. At roadside. Comment
  SEINET10937981  Eriophyllum lanatum var. croceum Mary Susan Taylor 1981-5-21 Taylor 3760 Butte T22N R4E nw sec 15, Paradise SE quad. S side of Lake Concow, ca. 5 mi E of Paradise. Yellow Pine Forest; 2100 ft. 640 Comment
  CAS-BOT-BC308159  Eriophyllum lanatum var. grandiflorum John Thomas Howell 1962-6-15 37523 Butte Magalia, Sierra Nevada 731 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
  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
  CAS-BOT-BC301466  Eriophyllum lanatum var. integrifolium A. A. Heller 1917-7-26 12821 Butte Butte Meadows 1402 Comment
  UCD103055  Erodium botrys A. A. Heller 1915-3-24 11777 Butte Near Dry Creek, 5 miles south of Pentz. Comment
  CHSC99320  Erodium cicutarium Lowell Ahart 2008-5-21 14765 Butte Below the high water line of Lake Oroville, on the south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC52400  Erodium moschatum Rod Robertson 1979-3-20 10 Butte 10 ft S of Humbug Rd, 100 ft W of Honey Run Rd, 4.3 mi E of Skyway. 85 Comment
  UCR88747  Eryngium articulatum Lowell Ahart 1987-7-19 5839 Butte Sacramento Valley, along the Midway, 0.5 mile south of Durham 45 Comment
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Oct 10 2010
  CHSC115453  Erysimum capitatum M. Sutton; K. Schierenbeck 2013-5-5 49 Butte Deer Creek. 657 Comment
  CHSC25463  Erysimum capitatum var. capitatum Hayes; Warner 1977-7-11 96 Butte Near Humboldt Summit (near Butte-Tehama county line), ca. 200 m down Pacific Crest Trail from the summit towards Humboldt Peak. 2011 Comment
  CHSC2930  Erysimum capitatum var. capitatum W. Fitzwater 1958-4-19 Butte Humboldt Rd., Chico area. 411 Comment
  CHSC113492  Erythranthe breviflora Lowell Ahart 2014-7-10 19615 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC105188  Erythranthe breweri B. Castro; L. P. Janeway 1999-8-1 1025 Butte NE shore of Summit Lake, ca 0.7 mi NE of Snow Mtn. 1886 Comment
  CHSC11893  Erythranthe breweri E. B. Copeland 1930-6-28 461 Butte Jonesville. 1700 Comment
  CHSC44754  Erythranthe breweri R. Banchero 1980-6-16 232 Butte Along Humbolt Rd 0.5 mi W of the jct with the Skyway, ca 5 mi NE of the jct of Humbolt Rd and Hwy 32. 1292 Comment
  CHSC38697  Erythranthe cardinalis Vernon Oswald 1983-7-13 865 Butte Upper Bidwell Park, Chico, at the retaining wall at the e end of Centennial Ave. 85 Comment
  CHSC51017  Erythranthe cardinalis Lowell Ahart 1990-8-15 6581 Butte Along McCabe Creek, below the high water line of Lake Oroville, about 1/2 mile south-west of the Enterprise Bridge across Lake Oroville. 228 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
  CHSC51925  Erythranthe glaucescens Loren Gehrung 1987-3-29 11 Butte By small stream S of Centergap Rd on N face Butte Cr cyn. 10 mi ENE of Chico, 4 mi ENE of Covered Bridge. 292 Comment
  SEINET8340802  Erythranthe glaucescens Sandra C. Morey 1978-4-10 17 Butte highway 32, ca. 7.5 mi e of junction with Highway 99 at Chico. 515 Comment
  CHSC41284  Erythranthe guttata S. C. Morey 1983-7-21 502 Butte Cherry Hill Meadow. On n side of Humbolt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC44744  Erythranthe guttata R. Banchero 1980-6-26 268 Butte Along Bull Hill Rd 2.5 mi N of its jct with the Skyway. 1524 Comment
  CAS-BOT-BC151464  Erythranthe latidens Lowell Ahart 1986-4-19 5244 Butte Peter Ahart Ranch, about 2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville 39 Comment
  CHSC105539  Erythranthe primuloides Lowell Ahart 2010-9-28 17255 Butte On damp black soil, about 10 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
  CHSC64223  Erythranthe primuloides S. C. Morey 1983-7-28 631 Butte Chico Meadows. On e side of Scout Rd., ca. 1 mi n of its jct with Humbolt Rd. at Butte Meadows. 1292 Comment
  CHSC13514  Erythranthe pulsiferae N. E. Long 1974-5-1 Butte Scarce alongside dirt road, ca. 300 yards off Cohasset Highway and ca. 12 mi n of Chico. 274 Comment
  CHSC31345  Erythronium multiscapideum Howard Paul 1980-4-6 5 Butte To the s side of Humbug road, ca. 1.5 mi e of the Centerville cemetery, 20 mi e of Chico. 365 Comment
  CHSC31848  Erythronium multiscapideum L. Ahart 1977-3-28 1231 Butte Along North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC4195  Erythronium multiscapideum E. P. Parreno 1967-4-10 Butte Ca. 300 yards from Covered Bridge, NE Chico. Comment
  CHSC70846  Erythronium multiscapideum Vernon Oswald 1998-3-16 8891 Butte North end of Upper Bidwell Park along lower Jeep Trail paralleling the east side Big Chico Creek north of the old homestead. 243 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
  CHSC99652  Eschscholzia californica H. Koeth 2007-4-26 Butte 20th and Salem St., Chico. Growing in an unmanaged lawn. UTM 10 600693E 4396754N 57 Comment
  SEINET10904725  Eschscholzia californica Mary Susan Taylor 1975-10-4 Taylor 962 Butte E side of Kunkle Reservoir, ca. 1/4 mi E of Pentz-Magalia Hwy, ca. 1 mi S of Paradise; open to sun. 610 Comment
  CHSC1192  Eschscholzia lobbii W. Reed 1942-3-26 Butte Comment
  UC204950  Eschscholzia lobbii A. A. Heller 1914-3-7 11188 Butte 8 mi n Oroville Comment
  UCD73329  Eschscholzia lobbii Chuck Hughes 2008-3-18 20 Butte Oroville, west of 6th St. between Nelson Ave. school and baseball fields. Field has been approved for development. 71 Comment
  CAS-BOT-BC419501  Eschscholzia lobbii A. A. Heller 1928-4-4 14483 Butte Near the Hooker Oak east of Chico Comment
  HSC66209  Eschscholzia lobbii D. L. Daniels 1979-3-23 13 Butte 50 ft. W of Bruce Rd. and 80 ft. N of Skyway, 1 1/2 mi. SE of Chico on Skyway 91 Comment
  SD60216  Euphorbia ocellata A. A. Heller 1927-9-5 14469 Butte at the base of hills ca. 3 miles east of Chico Comment
  SEINET10939887  Euphorbia ocellata Mary Susan Taylor 1975-10-3 Taylor 945 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
  RSA572325  Euphorbia ocellata var. ocellata Robert F. Hoover 1938-8-2 3718 Butte 7 miles southeast of Chico. Comment
  RSA498983  Euphorbia ocellata var. ocellata F. W. Peirson 1923-7-21 3760 Butte North of Chico. Comment
  CHSC26766  Euphorbia peplus P. Moyer 1972-3-4 107 Butte CSUC Campus. Next of Chicano Center, 2nd and Ivy. 60 Comment
  SD239722  Euphorbia serpillifolia subsp. hirtula George K. Helmkamp, E. A. Helmkamp 2009-9-5 15592 Butte Sacramento Valley: Palermo Road 0.3 mi east of its junction with CA-70, 6.1 mile ENE (76a^z) of Biggs (Palermo 7.5'Q) 57 Comment
  JEPS122258  Euphorbia serpillifolia subsp. serpillifolia Lowell Ahart 2014-9-23 19877 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
  JEPS94953  Euphorbia spathulata Lowell Ahart 1997-3-25 7714 Butte about 12 air mi se of Oroville (about 2 1/4 mi n and 2 1/2 mi e of Honcut, w of the ditch for the Old Honcut Flume, w of North Honcut Creek) 60 Comment
  UC1586603  Euphorbia spathulata Vernon H. Oswald and Lowell Ahart 1991-5-11 4576 Butte Loafer Creek Recreation Area Lake Oroville (along Roy Rodgers Trail, near the group camps) 341 Comment
  CHSC19641  Festuca arundinacea E. Parreno 1968-4-27 75 Butte Vacant lot behind Community Center on e 9th and Linden St., Chico. 59 Comment
  CDA38775  Festuca bromoides L. Ahart, Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17906 Butte On the north side of the path, near the sign, southwest of intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. Comment
  CHSC89028  Festuca idahoensis A. Peterson 2003-5-6 77 Butte Southeast of Chico, Hwy 70 road shoulder, about 2 1/2 miles sw of bridge over north fork of Feather River. 609 Comment
  CHSC113277  Festuca myuros var. hirsuta Lowell Ahart 2014-4-9 19331 Butte West edge of Pennington Road, at the intersection of Pennington Road and Colusa Highway, about 6 miles west of Gridley. 22 Comment
  CHSC41308  Festuca subulata S. C. Morey 1983-7-22 544 Butte Cherry Hill Meadow. On n side of Humboldt Rd., ca. 3.2 mi e of Butte Meadows. 1414 Comment
  CHSC38556  Ficus carica Vernon Oswald 1983-3-31 249 Butte Upper Bidwell Park, Chico, beside the trail near Chico Creek near the power lines. 91 Comment
  CHSC38927  Fimbristylis autumnalis Vernon Oswald 1983-7-25 911 Butte Bidwell State Park, w of the parking area at the boat ramp, River Rd. near the washout. Comment
  UC1562318  Floerkea proserpinacoides Vernon Oswald 1990-6-26 4320 Butte 0.5 air mi sw of Humbug Summit (near the headwaters of the north branch of Willow Creek, 0.6 mi w of Humbug Road via the logging road just s of Cold Springs); Willow Creek 1969 Comment
  CHSC80579  Foeniculum vulgare Lowell Ahart 2001-6-13 8816 Butte Sides of the dirt road east of the large pump, on the south side of Evans-Reimer Road, about 1 mile east of Pennington Road, Gray Lodge Waterfowl Management Area, about 4 miles (air) southwest of Gridley. 22 Comment
  CHSC98910  Foeniculum vulgare L. P. Janeway 2007-12-11 9222 Butte Northern Sierra Nevada Foothills. Southeast side Feather River between Table Mountain Blvd and Fish Barrier Dam. 52 Comment
  CHSC43057  Fragaria vesca L. P. Janeway 1987-6-5 2151 Butte Upper reach of Carey Gulch where rd 22N89 crosses it 0.5 mi from Oro Quincy Hwy. Edge of road near creek. 1097 Comment
  CAS-BOT-BC437079  Fragaria virginiana subsp. platypetala A. A. Heller 1915-6-27 12036 Butte Jonesville in the Sierra Nevada 1676 Comment
  CAS-BOT-BC62944  Frangula californica subsp. tomentella A. A. Heller 1915-5-16 11869 Butte Chico-Centerville road 3 mi. from Chico. Comment
  CAS-BOT-BC55656  Frangula purshiana C. R. Quick 1946-8-21 46 -128 Butte Meadow near Pulga Comment
  CHSC39925  Frangula purshiana M. S. Taylor 1981-5-21 3758 Butte S side of Lake Concow, ca. 5 mi E of Paradise. 640 Comment
  CHSC109215  Frangula rubra B. Castro; L. P. Janeway 2004-6-13 1467 A 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 Road. 829 Comment
  CHSC86860  Frangula rubra L. P. Janeway; John Hunt 2003-7-11 7896 Butte Northern High Sierra Nevada. Along east side of North Fork Feather River arm of Lake Oroville; 1.1 km north-northeast of mouth of French Creek. 296 Comment
  SEINET10454869  Frasera albicaulis subsp. nitida Mary Susan Taylor 1980-6-14 Taylor 2880 Butte T21N R5E ne sec 25. Big Bend quad. On N sid eof Zink Road, near entrance to Zink Ranch, ca. 2 mi E of Lake Madrone; Yellow Pine Forest. 762 Comment
  SEINET13943082 Image available Fraxinus dipetala Unknown 11405 Butte Between the 14 mi house and the Forest Ranch; 2400 ft alt. 732 Comment
  JEPS120066  Fraxinus profunda Lowell Ahart, Susan Bazell, Josephine Guardino, Wes Dempsey 2012-7-5 18273 Butte Path in Cedar Grove, west of parking area, Lower Bidwell Park, Chico. Comment
  CHSC3193  Fritillaria eastwoodiae Dona Kingsford 1966-3-23 Butte 23 miles SW of Chico and 1 mile S of Magalia. Comment
  SEINET10469656  Fritillaria eastwoodiae Mary Susan Taylor, L. Hanson 1981-4-21 Taylor 3552 Butte T23N R4E ne/nw sec 29, Paradise SE quad. Rd embankment, ca. 500 ft S of creek crossing rd, E side of spur rd to Old Utah Mine, ca. 0.5 mi N of its jct with Jordan Hill Rd (Ponderosa Way), ca. 1 air mi NE of Magalia. 2600 ft. 792 Comment
  NY319697  Fritillaria phaeanthera L. H. Morrison 1932-4-17 s.n. Butte Near Durham. Comment
  CAS-BOT-BC130427  Fritillaria pluriflora Frances Brown 1935-3-1 s.n. Butte Near Durham Comment
  CAS-BOT-BC130428  Fritillaria pluriflora M. A. Wagner 1928-3-1 s.n. Butte Near Chico Comment
  CHSC2282  Fritillaria pluriflora N. Maxwell 1929-3-4 Butte Near Shasta Union School. 60 Comment
  CHSC28974  Fritillaria pluriflora J. D. Jokerst 1980-3-12 468 Butte Ca 1.0 mi E of Chico Muni Airport, 600 m E of Cohasset Hwy where it makes a 45 degree turn to the NW. 67 Comment
  CHSC2275  Fritillaria purdyi E. Washburn 1930-3-1 Butte Iron Canyon, Chico Creek. [L. Janeway 2011 note: locality most likely incorrect.] Comment
Read comments
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
  SEINET10469524  Fritillaria recurva Mary Susan Taylor 1981-4-8 Taylor 3506 Butte T22N R4E north center border sec 12, Pulga SW quad. Serpentine ridge n of logging landing site just w of power lines, 1/2 mi w of Ponderosa Way/Rim Rd, ca. 5 mi n of Jarbo Gap on Hwy 70; n of Oroville. 2900 ft. 884 Comment
  CHSC65585  Galium aparine L. P. Janeway 1995-6-6 4772 Butte South-trending ridgetop at the far western end of Jackson Ranch Ridge, about 0.9 mi east-northest of the falls of Feather Falls. 1054 Comment
  RSA713006  Galium aparine L. Ahart 2006-5-8 12597 Butte 50 yards E of the fence and reservoir, 2.25 miles W of the parking area, cow chute, and Cherokee Road, N Table Mtn, 7 miles air N of Oroville. 296 Comment
  SEINET10836823  Galium bolanderi Mary Susan Taylor 1981-5-29 Taylor 3815 Butte T22N R5E ne sec 22, Pulga SW quad. Chino Ridge, ca. 0.5 mi N of 22N31, ca. 3 air mi SE of Pulga. Along trail up ridge; filtered to open light. Comment
  CAS-BOT-BC26139  Galium grayanum A. A. Heller 1914-8-7 11668 Butte Summit back of Jonesville, on the north side of the pass. Comment
  CHSC61648  Galium grayanum var. grayanum Lowell Ahart 1993-9-8 7165 Butte On the north side of the ridge, about 1/2 mile east of Snow Mountain. 2103 Comment
  CDA6671  Galium mollugo Sterling O. Mattoon, L. C. Going 1962-6-19 Butte Southwest of Nord Avenue & Bell Road, Chico. 0 Comment
  UCD121842  Galium nuttallii Susan Wagener 1955-4-23 43 Butte 1/2 mile southwest of Compton on road to Durham. 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
  JEPS9393  Galium sparsiflorum subsp. glabrius Rimo Bacigalupi with R. Hauke and Geo. Bacigalupi 1954-7-15 4725 A Butte 0.4 mi below, along Butte Canyon side, on Nimshew (Humbug) Rd Nimshew 701 Comment
  CHSC25343  Galium tricornutum Marc P. Hayes 1977-4-24 20 Butte Adjacent Hwy 99 ca. 2.3 km S of Butte Creek. 60 Comment
  SEINET10500640  Galium tricornutum Lowell Ahart 1991-5-8 Ahart 6649 Butte Along a small wash, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. Valley Grassland. T17N R4E S4. 37 Comment
  UCD121927  Galium tricornutum D. B. Marcum 1969-4-12 20 Butte 18.6 miles north of Marysville on State Highway 70. 24 Comment
  SEINET10500786  Galium trifidum var. subbiflorum Mary Susan Taylor 1978-6-24 Taylor 1638 Butte Ernies Island, in Butte Creek, junction with Old Humboldt Road, ca. 0.5 mi W of Butte Meadows; Yellow Pine Forest. 1372 Comment
  SD4919  Galium triflorum E. B. Copeland 1930-7-15 472 Butte Jonesville, in damp meadow 1500 Comment
  CHSC107395  Garrya fremontii Blake McSorley 2010-2-16 Butte Crownpoint Road and Hwy 32. 579 Comment
  RSA134772  Garrya fremontii Percy C. Everett, E. K. Balls 1959-10-20 23910 Butte 9.4 mi NE from Chico, State Hwy 32, toward De Sabla. 793 Comment
  CHSC116995  Gastridium phleoides Lowell Ahart 2016-6-4 20918 Butte On the north side of Lumpkin Road, about 100 yards north of McCabe Creek, about 3 miles (air) west of Forbestown. 387 Comment
  UCD66713  Gastridium phleoides C. G. Albertus 1933-5-29 8 Butte 1/2 mi. N. of Wick. 60 Comment
  JEPS116001  Gastridium ventricosum Lowell Ahart 2009-6-19 15931 Butte On dry rocky soil, on the sides of the cutoff trail, on the south side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 2/3 mile (air) west of Highway 32, about 10 miles northeast of Chico 267 Comment
  CHSC37443  Gayophytum diffusum subsp. parviflorum R. A. Schlising; R. Banchero, R. Preston 1981-7-14 4144 Butte About 0.3 mi s of Humbug Summit in ne part of county. 1981 Comment
  UC600543  Gayophytum heterozygum H. F. Copeland 1927-9-2 445 Butte Jonesville Comment
  CHSC112716  Gayophytum humile Lowell Ahart 2013-10-26 19214 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  CHSC31182  Gayophytum humile M. S. Taylor 1978-7-18 1716 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  CHSC45095  Gentiana newberryi var. newberryi Pauleen Broyles; R. A. Schlising, L. P. Janeway, B. Castro 1987-7-19 1076 Butte Ca 17 km ne of Inskip. Meadow on n side of Coon Hollow Creek. 1638 Comment
  UC392189  Gentianella amarella subsp. acuta E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  JEPS121303  Geranium Lowell Ahart 2013-11-29 19296 Butte Below the high water line of Lake Oroville, about 50 yards W of the old road, W of the first area to park, about 3.5 air miles NE of Oroville Dam. Comment
  CDA31933  Geranium carolinianum L. Ahart 2008-5-8 14721 Butte Below the high water line of Lake Oroville, about 50 yards east of the poor parking area, McCabe Creek area, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville Comment
  CHSC101670  Geranium carolinianum Lowell Ahart 2009-4-26 15649 Butte Upper Bidwell Park, on the north side of Ten Mile House Road, about 100 yards west of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 461 Comment
  CHSC109001  Geranium carolinianum Lowell Ahart 2012-4-30 17945 Butte On the south side of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC111373  Geranium dissectum Lowell Ahart 2012-5-2 17968 Butte On dark clay soil, on the sides of a depression, under the Government Pole Line, about 100 yards west of the Easter Cross Parking Lot, Upper Bidwell Park, about 1 mile east of Chico. 90 Comment
  RSA0045624  Geranium dissectum Lowell A. Ahart 2012-4-30 17926 Butte 20 yards north of the table at the old homestead, about 20 yards southeast of the intersection of South Rim Trail and Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  CHSC35319  Geranium molle M. S. Taylor; K. Tharp 1982-4-8 4284 Butte At end of Beckwourth Rd, just above Oroville Dam overlook parking area, Oroville. 320 Comment
  CHSC98944  Geranium molle Lowell Ahart 2008-5-8 14720 Butte Below the high water line of Lake Oroville, about 50 yards south of the poor parking area, about 50 yards east of McCabe Creek, about 3/4 mile southwest of the Enterprise Bridge, about 11 miles (air) east of Oroville. 259 Comment
  SEINET12331839  Gilia capillaris Unknown 1985-1 5105 Butte 1 mi S of the Ponderosa Dam across the South Fork of the Feather River, about 3 mi NW of Forbestown 1585 Comment
  JEPS113185  Gilia capitata subsp. mediomontana Lowell Ahart 2007-5-29 13920 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 by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Bi 704 Comment
  CHSC41374  Gilia capitata subsp. pedemontana R. A. Schlising; R. Banchero 1981-4-17 4038 Butte NW of Bangor in S part of county; 1.3 mile S of junction Grubbs and Dunstone Roads, along latter, roadside. Comment
  SEINET10496747  Gilia capitata subsp. pedemontana Mary Susan Taylor 1979-8-4 Taylor 2174 Butte T23N R5E center of S border sec. 22/27. Ca. 1 mi N of Cresta Powerhouse on Hwy 70, ca. 30 mi N of Oroville; granitic soils. 488 Comment
  CHSC10594  Gilia tricolor Lowell Ahart 1967-4-11 Butte Peter Ahart Ranch, Honcut. 42 Comment
  SBBG17367  Gilia tricolor subsp. tricolor M. Vincent 1961-3-29 10 Butte Skyway on rd from Paradise to Chico overlooking "Little Grand Cyn" Comment
  CHSC3229  Ginkgo biloba Virginia Hagaman 1966-5-5 165 Butte Chico State College Campus. Comment
  JEPS28831  Githopsis pulchella subsp. campestris L. R. Heckard with R. Bacigalupi 1962-6-1 1305 Butte about 3 mi e Chico (just of Centerville road, about 1 mi e of its junction with the Paradise road (Skyway)) 67 Comment
  JEPS120592  Glinus lotoides Lowell Ahart 2013-11-18 19287 Butte Below the high-water line of Lake Oroville, about 200 yards east of the boat ramp at the end of Stringtown Road, about 2.5 air miles northeast of Hurleton. Comment
  CAS-BOT-BC434994  Glinus lotoides Lowell Ahart 1986-11-9 5437 Butte About 1/10 mile south of the clay burrow for Oroville Dam, 1/4 mile east of Larkin Road, about 6 miels south-west of Oroville 36 Comment
  SEINET10537439  Glinus lotoides Lowell Ahart 1990-10-5 Ahart 6628 Butte On the bottom of McCabe Creek, below the high water line of Lake Oroville, about 1/4 mile south-west of the Enterprise Bridge across Lake Oroville. Foothill Woodland (destroyed). T19N R6E NW/S7. 229 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
  CHSC46690  Glyceria borealis V. Oswald; L. Ahart 1989-8-15 3938 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. In lake n of and visible from the road. 1752 Comment
  CHSC102991  Glycyrrhiza lepidota Lowell Ahart 2009-5-30 15801 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico. 209 Comment
  JEPS115661  Glycyrrhiza lepidota Lowell Ahart 2009-5-30 15801 Butte South of a small stream, meadow, about 30 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico 209 Comment
  CHSC112706  Gnaphalium palustre Lowell Ahart 2013-10-26 19207 Butte On the south side of Philbrook Creek, below the high water line (strand) of Philbrook Reservoir. 1681 Comment
  RSA726431  Grindelia hirsutula var. davyi L. Ahart 2007-11-3 14576 Butte About 1/4 mile east of Pentz Road, about 1/2 mile southeast of the power house below Kunckle Reservoir, about 5.5 miles southeast of Paradise. 335 Comment
  SEINET7728169  Gymnogramma triangularis Unknown Butte Chico Comment
  CHSC27983  Hackelia nervosa M. S. Taylor 1978-7-18 1711 Butte On e side of Humboldt Peak, at Humboldt Summit. 2133 Comment
  UCD20439  Hamamelis mollis John Gross 1982-12-27 HN 144 Butte Butte County, at Lake Oroville, beside Berry Creek. Comment
  JEPS105662  Hedera helix L. P. Janeway, Gavin Blosser 2003-9-3 7972 Butte Northern High Sierra Nevada. Along southwest edge of Ponderosa Reservoir 185 m south of Ponderosa Dam (South Fork Feather River). Around disintegrating structure 299 Comment
  SBBG54694  Helenium bigelovii E. B. Copeland 1930-7-11 Butte Jonesville 1500 Comment
  SEINET10508799  Heleochloa schoenoides Mary Susan Taylor 1978-9-8 Taylor 1882 Butte Along flood control slough, ca. 4 mi N of Chico, along Hwy 99. 61 Comment
  CHSC116133  Heliotropium europaeum Lowell Ahart 2015-11-7 20619 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
  JEPS115652  Heliotropium europaeum Lowell Ahart 2009-8-13 16277 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
  CAS-BOT-BC309785  Hemizonia congesta subsp. luzulifolia A. A. Heller 1916-9-9 12653 Butte Near Durham Comment
  UCD73011  Hesperevax acaulis Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  HSC98211  Hesperocyparis macnabiana M. S. Taylor, J. D. Jokerst 1980-2-23 2317 Butte Magalia near junction of Skyway and Coutelenc Rd. 701 Comment
  SJSU12029  Hesperocyparis macnabiana J. F. Scott 1980-10-13 60 Butte on both sides of Paradise Road c. 2 mi N of Paradise, between Paradise & Megalia Reservoir Dam 685 Comment
  SEINET3450929  Hesperolinon californicum Unknown 2003-6-18 10289 Butte Oroville, Oroville, about 12 miles southeast, about 2.5 miles north and 2.5 miles east of Honcut, about 150 yards west of the dredge piles along North Honcut Creek 60 Comment
  CHSC1013  Hesperolinon micranthum V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  UC1212237  Hesperolinon micranthum Freed W. Hoffman 1951-5-1 3777 Butte along highway from Chico to Paradise Comment
  UC1586511  Heteranthera limosa Vernon H. Oswald and Lowell Ahart 1991-8-28 4851 Butte sw side of Hwy 162 ca 3.5 mi nnw Biggs; Rice Experiment Station 30 Comment
  CHSC42894  Heterocodon rariflorum L. P. Janeway 1987-6-13 2204 Butte Along Dogwood Cr, along rd to Mayaro 2.4 mi E of Concow Rd. 990 Comment
  CAS-BOT-BC143629  Heteromeles arbutifolia A. A. Heller 1913-12-5 11149 Butte In the canyon of Big Chico Creek east of Chico 91 Comment
  CHSC1551  Heteromeles arbutifolia R. M. Staley 1952-7-4 Butte Paradise. 548 Comment
  JEPS115711  Heteromeles arbutifolia Lowell Ahart 2009-6-3 15836 Butte On the west side of Ten Mile House Road, just north of Guardians Trail, Upper Bidwell Park, about 1/4 mile west of the intersection of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico 381 Comment
  SEINET10542116  Heteromeles arbutifolia Melvin L. Conrad, David B. Dunn; Douglas G. LeDoux 1973-6-5 Conrad 7028 Butte 2.6 miles w of paradise on chico road 610 Comment
  CHSC11827  Hieracium albiflorum E. B. Copeland 1930-7-16 495 Butte Jonesville. 1600 Comment
  CHSC21245  Hieracium albiflorum M. S. Taylor 1975-9-12 905 Butte Ca. 500 m w of Hwy 32, ca. 24 mi ne of Chico. 1097 Comment
  CHSC51354  Hieracium scouleri var. scouleri Vernon Oswald 1990-7-7 4354 Butte Near the south end of Butte Creek Trail, ca. 2.25 mi east of Forest Ranch, ca. 1 mi northwest of De Sabla. 548 Comment
  CHSC107574  Hoita macrostachya Lowell Ahart 2011-8-17 17631 Butte Near drainage below dam, about 100 yards west of the table at the old homestead and southwest of Ten Mile House Road, Upper Bidwell Park, about 3/4 miles (air) southwest of the inteaction of Highwy 32 and Ten Mile House Road, about 10 miles northeast of Chico. 239 Comment
  CAS-BOT-BC280716  Holcus lanatus Lowell Ahart 1981-9-15 3156 Butte One half mile N of the Lost Creek Reservoir 1100 Comment
  CHSC44570  Holcus lanatus Lowell Ahart 1979-6-9 1930 Butte East of Kunkle Creek, about 2 miles south-east of Paradise. 457 Comment
  JEPS119957  Holcus lanatus Lowell Ahart 2012-6-14 18193 Butte Dry high bank on the north side of Big Chico Creek, about 30 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. Comment
  CAS-BOT-BC149861  Holodiscus discolor Lowell Ahart 1985-6-16 5044 Butte About 1/4 mile south-west of the Forbestown Res., about 4 miles north-east of Forbestown 487 Comment
  UC897973  Holozonia filipes A. A. Heller 1914-7-13 11565 Butte 10 mi e Oroville (Mt. Ida ranch) Comment
  UC1609263  Hordeum brachyantherum subsp. brachyantherum Lowell Ahart 1993-5-15 6942 Butte near bridge of Biggs Princeton Road about 3 mi w Biggs (Cherokee Canal); Cherokee Canal 30 Comment
  CAS-BOT-BC285091  Hordeum marinum subsp. gussoneanum John Thomas Howell 1961-9-22 36781 Butte Jarbo Gap, Feather River Highway Comment
  SD149200  Hordeum marinum subsp. gussoneanum Lowell Ahart 1980-4-29 2121 Butte Honcut, Peter Ahart Ranch 49 Comment
  CAS-BOT-BC284886  Hordeum murinum subsp. leporinum Lowell Ahart 1977-6-2 1509 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC6745  Hordeum murinum subsp. leporinum Marilyn Lee 1968-4-15 178 Butte 1076 E. First Ave., Chico. Almond orchard. Comment
  CHSC6133  Hordeum vulgare J. Wheeler 1968-4-17 309 Butte W side of railroad tracks about 1 mi e of Nord. 44 Comment
  CAS-BOT-BC536584  Horkelia californica var. elata Lowell Ahart 1980-7-29 2505 Butte Sierra Nevada, near Forbestown Road 750 Comment
  CHSC46239  Horkelia fusca subsp. parviflora Pauleen Broyles 1987-7-5 1075 Butte Ca 7 km n. of Inskip on Bull Hill Rd, along Coon Creek. 1500 Comment
  RSA4663  Horkelia fusca subsp. tenella E. B. Copeland 1929-7-25 371 Butte Jonesville. 1550 Comment
  CAS-BOT-BC143973  Horkelia fusca var. tenella A. A. Heller 1914-8-8 11673 Butte Jonesville 1524 Comment
  CHSC23677  Horkelia tridentata M. S. Taylor 1976-4-24 1067 Butte Ca. 5 ft e of Oroville-Quincy Hwy, ca. 4 mi ne of Lake Madrone, ca. 13 mi ne of Oroville. Comment
  UC860239  Horkelia tridentata subsp. tridentata A. A. Heller 1914-5-18 11413 Butte near Forest Ranch; west slope of the Sierra 701 Comment
  JEPS124020  Horkelia tridentata var. tridentata Lowell Ahart 2015-6-16 20239 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
  CAS-BOT-BC536257  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CAS-BOT-BC536258  Horkelia tridentata var. tridentata A. A. Heller 1914-5-18 11413 Butte Near Forest Ranch, west slope of the Sierra 822 Comment
  CHSC43664  Hosackia oblongifolia var. oblongifolia Vernon Oswald 1987-5-21 2921 Butte Skyway between Stirling City and Inskip, 0.4 mi n of the junction of Powellton (Humbug) Rd. In wet ditch beside the road. 1377 Comment
  CHSC34142  Hydrocotyle umbellata L. Ahart 1981-9-27 3212 Butte Ca. 1/8 mi ne of jct of Lower Wyandotte Rd and Upper Palermo Rd, ca. 4 mi ne of Palermo. 80 Comment
  CAS-BOT-BC400825  Hypericum anagalloides Lowell Ahart 1980-7-20 2478 Butte At Little Bald Rock 1100 Comment
  SEINET10882700  Hypericum anagalloides Lowell Ahart 1977-6-3 Ahart 1403 Butte Peter Ahart Ranch, Honcut. Valley Grassland. Comment
  JEPS93795  Hypericum concinnum Vernon H. Oswald 1998-7-1 9244 Butte along spur road intersecting Rim Road 4.1 mi n of Jarbo Gap (1 air mi w of Pulga and 0.4 mi w of Rim Road) 853 Comment
  SFV2322  Hypericum concinnum B. Fuller 1962-5-23 s. n. Butte Sierra Nevada Paradise. Lot across the street from 5330 Harrison Road. 515 Comment
  CHSC92048  Hypericum mutilum Lowell Ahart 2005-8-14 12331 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  UCD160273  Hypericum mutilum subsp. mutilum Chuck Hughes 2014-8-6 409 Butte Lake Madrone, near the dam, alongside Oroville-Quincy Highway. 602 Comment
  CHSC6687  Hypochaeris glabra Marilyn Lee 1968-4-19 125 Butte Along Cherokee Road ca 2 miles S. of Cherokee, 105 yards E. of cemetary. Table Mt. Comment
  HSC23528  Iris douglasiana A. K. Revard 1967-3-19 3 Butte Goat Rock, 1 mi. W on Goat Rock Rd. from Hwy. 1, 6 mi. N of Bodega Bay 30 Comment
Read comments
Nov 5 2013
  CAS-BOT-BC133559  Iris hartwegii L. W. Lenz; E. K. Balls 1957-5-22 22503 Butte Feather River Hwy. U.S. 40 Alt., 18 mi. NE. from Oroville 701 Comment
  CHSC36106  Iris tenuissima C. W. Dawson 1978-3-22 3 Butte In Paradise, at intersection of Stearns Rd. and Pentz Magalia Highway. 457 Comment
  CHSC30989  Isoetes nuttallii M. S. Taylor 1980-3-15 2382 Butte Ca. 1/4 mi s of Pentz rd, ca. 1/8 mi e of Hwy 99, ca. 15 mi s of Chico. 54 Comment
  SEINET11716738  Isoetes nuttallii M. S. Taylor 1980-1 2678 Butte ca 3 mi E of Lake Madrone, in tiny vernal creek running through Big Bald Rock 997 Comment
  SEINET3441875  Isolepis setacea Unknown 2003-6-30 10337 Butte Forbestown, Forbestown, about 3 air miles north, in the gutter on the north side of Fields Ridge Road, north of the Ponderosa Reservoir 490 Comment
  CHSC69474  Jensia rammii James D. Jokerst 1982-5-28 1584 Butte Concow Basin W of Concow Creek (and Concow Rd.) ca. 0.25 mi N of Concow Lake. 609 Comment
  UC1299264  Jensia rammii Freed W. Hoffman 1949-5-14 3179 Butte 14.7 mi w Challenge (on Oroville Road); Black Bart Monument Comment
  CAS-BOT-BC340245  Jensia rammii Lowell Ahart 1980-4-30 2141 Butte Along Hurleton-Swedes Flat Road 500 Comment
  CDA32020  Juglans californica var. hindsii L. Ahart 2009-8-3 16252 Butte On the north side of Ten Mile House Road, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico Comment
  CHSC27163  Juglans regia M. MacArthur 1968-6-13 307 Butte Parkinbg lot NE of Building U, Chico State College campus. 60 Comment
  JEPS114986  Juncus acuminatus Lowell Ahart 2008-6-13 14827 Butte In shallow water and on wet soil, bottom of Oregon Gulch, bottom of an old gold mined area, about 400 yards southwest of the cemetery, about 10 miles (air) northeast of Oroville 305 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
  CHSC39332  Juncus articulatus Lowell Ahart 1983-6-26 4136 Butte Along Ponderosa Way. Along the edge of the East Fork of Canyon Creek, mear Ponderosa Way, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC113246  Juncus bufonius var. bufonius Lowell Ahart 2014-4-26 19412 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
  CHSC94045  Juncus bufonius var. bufonius R. D. Fischer 2005-9-1 709 Butte Sierra Nevada foothills, adjacent Hwy. 32, at the lower Humboldt Trailhead at the edge of Bidwell Park. Plants were growing on a springy slope, part of the old, by-passed, roadbed. 396 Comment
  CHSC99321  Juncus bufonius var. bufonius Lowell Ahart 2008-5-30 14803 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
  JEPS107944  Juncus bufonius var. bufonius Lowell Ahart 2005-5-2 11775 Butte Overflow area on the east side of the Sacramento River, northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) southwest of Chico 25 Comment
  JEPS122033  Juncus bufonius var. bufonius Lowell Ahart 2014-7-7 19593 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  CHSC6706  Juncus capitatus Marilyn Lee 1968-4-19 128 Butte West side of Cherokee Road ca 2 miles S. of Cherokee, 100 yards S.E. of cemetary, Table Mt. Comment
  CHSC73491  Juncus dubius B. Castro; L. Gehrung 1995-7-26 597 Butte Pinkard Meadow. Meadow along Pinkard Creek, ca 0.7 air mi W of Sly Creek Reservoir and 0.5 mi E of Mooreville Ridge, via a spur off USFS Rd 22N24.5. In center of moist meadow E of road. 1143 Comment
  CHSC78334  Juncus dubius Lowell Ahart 2000-6-29 8537 Butte On the west side of Concow Road at Flea meadow, about 1/2 mile west of Flea Mountain, about 3 1/2 miles (air) north of Concow Reservoir, about 5 miles (air) east of Magalia. 1036 Comment
  HSC100819  Juncus effusus subsp. effusus Lowell Ahart 2011-8-19 17636 Butte ~30 yd. E of Know-northing Creek, N side of Lumpkin Ridge Rd., 1/2 mi. SW of the intersection of Lumpkin Ridge Rd., County Rd. and road to Cascade, 5 (air) mi. NE of Feather Falls. 1225 Comment
  CHSC111716  Juncus effusus subsp. pacificus Lowell Ahart 2012-6-21 18211 Butte On the south side of Big Chico Creek, about 300 yards east of the dam at SycamorePool, Lower Bidwell Park, Chico. 62 Comment
  CHSC31906  Juncus effusus subsp. pacificus L. Ahart 1977-6-26 1441 Butte Along the edge of North Honcut Creek. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC97139  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-2 14248 Butte On the north side a water ditch, about 30 yards south of Oroville Dam Boulevard, about 1/4 mile southwest of the old overlook, about 4 miles (air) northeast of Oroville. 166 Comment
  JEPS113849  Juncus effusus subsp. pacificus Lowell Ahart 2007-7-8 14265 Butte On the west side of North Honcut Creek, Peter Ahart Ranch, about 1 1/2 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 53 Comment
  POM110832  Juncus ensifolius C. C. Bruce 1897-05 1880 Butte Little Chico Comment
  UC1564788  Juncus hemiendytus var. hemiendytus V. Oswald and L. Ahart 1989-6-27 3830 Butte ca 3.3 air mi se Jonesville (Humbug Rd at Butte Creek); Butte Creek 1767 Comment
  POM183199  Juncus howellii H. F. Copeland 1930-7-28 1371 Butte Neighborhood of Jonesville. 1829 Comment
  JEPS127087  Juncus kelloggii Lowell Ahart 2016-4-15 20750 Butte About 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. Comment
  SEINET10472451  Juncus leiospermus Mary Susan Taylor 1980-5-15 Taylor 2630 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
  SEINET10938189  Juncus leiospermus Mary Susan Taylor 1984-4-6 Taylor 5407 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  UCSB45481  Juncus leiospermus var. ahartii Ahart, Lowell 1982-5-14 Butte Peter Ahart Ranch; ca 2 mi N & 1/2 mi E of Honcut 50 Comment
  CAS-BOT-BC110142  Juncus leiospermus var. leiospermus Lowell Ahart 1978-5-2 s.n. Butte Sierra Nevada. Table Mountain, ca. 7 miles north of Oroville. 400 Comment
  CHSC113242  Juncus leiospermus var. leiospermus Lowell Ahart 2014-4-20 19381 Butte About 1/4 mile northwest of parking area on the west side of Cherokee Road, about 7 miles (air) north of Oroville. 392 Comment
  SEINET3450948  Juncus leiospermus var. leiospermus Unknown 2003-4-15 10095 Butte Oroville, Oroville, about 7 miles north, north Table Mountain, about 1.75 miles west of the iron gate and fence west of Cherokee Road, 100 feet west of Hendricks ditch 270 Comment
  CHSC105686  Juncus occidentalis Lowell Ahart 2010-9-21 17224 Butte Open area on the north side of a poor dirt road, about 1 mile (air) northeast of Jones Meadow, about 2 1/2 miles (air) southeast of Philbrook Reservoir. 1899 Comment
  RSA0119188  Juncus occidentalis Lowell Ahart 2014-7-7 19594 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1665 Comment
  CHSC78342  Juncus orthophyllus Lowell Ahart 2000-7-11 8566 Butte On the north side of a dirt road, about 100 yards north of Lumpkin Ridge Road, upper west branch of No-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
  CHSC57213  Juncus parryi L. P. Janeway 1987-7-5 2455 Butte At end of old logging road east of the Concow Road and 1.0 mi southwest of Jones Meadow. At granite outcroppings overlooking Balsam and Big Kimshew Creeks. 1798 Comment
  CHSC96884  Juncus tenuis Lowell Ahart 2007-6-12 14081 Butte On the east side of Rockefeller Road, at the intersection of Bald Rock Road and Rockefeller Road, about 13 miles (air) northeast of Oroville. 1011 Comment
  CHSC107600  Juncus triformis Lowell Ahart 2011-7-9 17563 Butte Open area of almost bare rock about 1/4 mile east of Little Bald Rock, about 2 miles (air) southeast of Brush Creek, about 15 miles (air) northeast of Oroville. 1009 Comment
  UC1485933  Juncus triformis Lowell Ahart 1980-7-20 2474 Butte ca 15 mi ne Oroville (along Bean Creek Road, near the s side of Little Bald Rock) 1100 Comment
  HSC101162  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte Above Oroville-Quincy Hwy, 0.8 road miles S of Stevens Ridge Road, 2.5 air miles NE of Wild Yankee Hill 830 Comment
  SBBG126191  Juncus trilocularis P. F. Zika 2011-7-6 25540 Butte above Oroville-Quincy Hwy, 0.8 rd mi S of Stevens Ridge Rd, 2.5 air mi NE of Wild Yankee Hill 830 Comment
  CHSC31924  Juncus uncialis J. D. Jokerst; B. Banchero, R. A. Schlising 1980-5-16 840 A Butte N of and adjacent to Humboldt Rd., 0.1 mi W of its junction with the Skyway in the community of Butte Meadows. Comment
  CHSC47574  Juncus uncialis Lowell Ahart 1978-5-1 1695 Butte On the bottom of a small vernal pool in a farmed field, Peter Ahart Ranch, about 2 1/4 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CHSC96975  Juncus usitatus Lowell Ahart 2007-7-11 14290 Butte About 100 yards west of the high gravel road (at turn, before washout), about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. 35 Comment
  RSA729996  Juncus usitatus L. Ahart 2007-7-11 14292 Butte 11 yards west of the high gravel road (at turn before washout), about 0.5 mi. west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air)SW of Oroville. 36 Comment
  RSA25679  Keckiella lemmonii Carl B. Wolf 1941-7-23 11051 Butte Northern Sierra Nevada. 0.7 mi. n.w. of Magalia at n.w. side of Magalia Reservoir. 732 Comment
  CHSC44083  Kelloggia galioides L. P. Janeway 1987-6-26 2323 Butte SW end of Logue Mdws. 1325 Comment
  JEPS95757  Kickxia elatine Lowell Ahart 1995-8-19 7611 Butte 12 mi S of Oroville (Peter Ahart Ranch; E side of North Honcut Creek; 1 mi N and 2 3/4 mi E of Honcut) 36 Comment
  JEPS117272  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
  CHSC52820  Kumlienia hystricula R. E. Preston 1982-3-27 208 Butte N bank of McCabe Cr; ca. 1.7 mi s of Enterprise bridge over Lake Oroville, ca. 11 mi e of Oroville. 451 Comment
  UC89375  Kyhosia bolanderi R. M. Austin Jul 1896 412 Butte Colby Comment
  CAS-BOT-BC111944  Kyllinga brevifolia John Thomas Howell 1959-9-20 34641 Butte Lower foothills, eastern outskirts of Oroville. 60 Comment
  CHSC92058  Kyllinga brevifolia Lowell Ahart 2005-8-14 12332 Butte Edge of ponds, Oroville Wildlife Area, about 1/2 mile west of Pacific Heights Road, about 3 1/2 miles (air) northwest of Palermo. 28 Comment
  JEPS104644  Lactuca saligna Lowell Ahart 2003-8-6 10476 Butte In the road gutter on the e side of Encina Grande Rd, just south of a small branch of Canyon Creek, ca 1 mi w of Oroville Quincy Highway, ca 2 1/2 mi (air) sw of Berry Creek. 632 Comment
  JEPS115280  Lactuca saligna Lowell Ahart 2008-11-4 15400 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
  CHSC32542  Lactuca serriola L. Ahart 1977-10-19 1601 Butte Near the garden. Peter Ahart Ranch, Honcut. 50 Comment
  CHSC42766  Lactuca serriola Lowell Ahart 1987-8-3 5843 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC65326  Laennecia coulteri Lowell Ahart 1995-10-4 7678 Butte Rice field, Peter Ahart Ranch, about 2 miles north and 1/4 mile easata of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC341293  Lagophylla glandulosa Lowell Ahart 1977-9-20 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  SEINET10474765  Lagophylla glandulosa subsp. serrata Mary Susan Taylor 1982-6-24 Taylor 4748 Butte T22N R4E sw/ne sec 14. Pulga SW quad. Mixed Evergreen Forest; e side of Ponderosa Way (Rim Rd), 1.6 mi n of Jarbo Gap on Hwy 70, ne of Oroville. 2850 ft. 869 Comment
  JEPS104007  Lamarckia aurea Lowell Ahart 2003-4-8 10051 Butte Along the dirt road, ca 1/8 mi nw of the iron gate and fence, nw of Cherokee Rd, North Table Mountain, ca 7 mi (air) n of Oroville. 326 Comment
  CHSC109096  Lamium amplexicaule Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17857 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
  CHSC43853  Lamium amplexicaule L. P. Janeway 1988-2-21 2589 Butte Low in cyn of Little Chico Cr ca 2 mi S of Ten Mile House. 243 Comment
  UC727015  Lamium amplexicaule A. A. Heller 1920-4-10 13360 Butte Chico Comment
  CHSC49826  Lasthenia ferrisiae Vernon Oswald 1990-4-11 4160 Butte Campus of Butte Community College, along the edge of the road just west of the Horse Arena. 91 Comment
  CHSC278  Lasthenia fremontii J. Turner 1930-4-18 Butte Near Chico Golf Links. Comment
  RSA517013  Lasthenia fremontii Barbara Ertter, L. Ahart 1986-4-13 5894 Butte 2 air miles NNE of Honcut between Oroville and Marysville, Peter Ahart Ranch (mostly used as sheep pasture). 30 Comment
  SEINET9327375  Lasthenia fremontii Unknown 1988-4-20 303 Butte Near Chico, along hwy 99 in pasture, 2.5 km S of Meridien Rd. on E side of the rd Comment
  UCD73060  Lasthenia platycarpha Ayzik Solomeshch 2003-4-9 s. n. Butte Wurlitzer Reserve, about 10 mi. north from Chico on Hwy 99, west side of the road. Comment
  CHSC117437  Lathyrus angulatus Lowell Ahart 2016-5-30 20896 Butte On the south side of a deep wash, west of Little Pump, Peter Ahart Ranch, about 2 1/2 miles north and 1/4 mile east ofd Honcut, about 12 miles (air) south of Oroville. 30 Comment
  CAS-BOT-BC213339  Lathyrus jepsonii subsp. californicus A. A. Heller 1914-5-1 11345 Butte Bank of Sacramento River west of Chico, Chico-Hamilton Road 6 miles from Chico Comment
  RSA406664  Lathyrus jepsonii subsp. californicus M. M. Boney 1897-1 1724 Butte [No location data on label] Comment
  CHSC38494  Lathyrus jepsonii var. californicus Vernon Oswald 1983-4-20 348 Butte Upper Bidwell Park, Chico, ca. 20 ft s of Chico Creek and 2000 ft e of the footbridge at the Golf Course (near the 4th green). 91 Comment
  CHSC112690  Lathyrus latifolius Lowell Ahart 2013-7-1 18814 Butte Meadow, 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
  CHSC31837  Lathyrus sulphureus L. Ahart 1977-4-16 1308 Butte Peter Ahart Ranch, Honcut. Along the banks and sides of North Honcut Creek. 50 Comment
  SEINET10452345  Lathyrus sulphureus Mary Susan Taylor 1980-4-16 Taylor 2497 A Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  SEINET10452347  Lathyrus tingitanus Lowell Ahart, Peter Ahart 1983-6-26 Ahart 4127 Butte T20N R8E ne sec 9. Along Ponderosa Way (Big Ridge Rd), ca. 2 mi se of the jct with Oroville-Quincy Hwy, ca. 15 mi ne of Oroville. Foothill Woodland; 500 m. 500 Comment
  CHSC101972  Layia fremontii J. Boze 1982-5-8 437 Butte Along edge of Horseshoe Lake in Upper Bidwell Park, Chico. Comment
  CHSC2378  Layia fremontii R. Carter 1965-5-14 200 Butte Found 1.4 mi. W of Hwy. 40A on Old Chico Rd. along N side of road, these taken along fence. 51 Comment
  CHSC375  Layia fremontii E. Canfield 1904-4-1 Butte Richardson Springs road. 84 Comment
  CHSC90045  Layia fremontii Rhonda Posey 1991-4-3 7 Butte Meridian Rd., ca. 12.8 mi n of Chico. Ca. 50 yds. N of Renkow Rd. 70 Comment
  CHSC49693  Lemna minuta Vernon Oswald 1984-2-25 1084 Butte Upper Bidwell Park, Chico, ca. halfway between Upper Park Rd. and the north rimrock, slightly e of Day Camp. Near the head of a ravine. 152 Comment
  CHSC74364  Leontodon saxatilis subsp. longirostris B. Castro 1998-6-13 790 C Butte Ca 5.5 air mi SE of Town of Paradise, in bottom of unnamed canyon just S of Neal Road, ca 80 ft N of creek channel, directly under transmission lines. 85 Comment
  JEPS117216  Leontodon saxatilis 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
  CHSC34169  Lepidium latifolium L. Ahart 1981-9-10 3143 Butte Near the entrance to the Graylodge Waterfowl Mgmt HQ w of Pennington Rd, ca. 12 mi sw of Gridley. 35 Comment
  CHSC35019  Lepidium nitidum R. E. Preston 1982-3-22 196 Butte Ca. 50 ft from sides of Hwy 149, ca. 1/2 mi e of its jct with Hwy 99, ca. 10.5 mi nw of Oroville. 60 Comment
  CAS-BOT-BC89874  Lepidium nitidum A. A. Heller 1914-2-10 11177 Butte Eight miles north of Oroville, near the western base of Table Mountain. Comment
  SEINET11985465  Lepidium nitidum D. A. Durham 1978-1 2 Butte along Hwy 32, 2 mi E of junction 99 at Chico 84 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
  CHSC35634  Lepidium strictum R. E. Preston 1982-4-4 217 Butte Dirt road on dike, Gray Lodge State Wildlife Area, ca. 0.3 mi w of Headquarters. 20 Comment
  UC600713  Lepidium virginicum H. F. Copeland 1930-7-18 1333 Butte Jonesville 1524 Comment
  CAS-BOT-BC13064  Lepidium virginicum var. menziesii Lowell Ahart 1987-5-6 5511 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  CHSC79066  Leptochloa dubia Lowell Ahart 2000-11-4 8714 Butte About 100 yards north of Rich Gulch Road, about 1 mile north of the West Branch Bridge across Lake Oroville, about 5 miles (air) southeast of Paradise. 335 Comment
  CHSC84008  Leptochloa fusca subsp. fascicularis Lowell Ahart 2003-6-22 10298 Butte On the south side of Richvale Highway, about 50 yards east of railroad, Richvale. 32 Comment
  CAS-BOT-BC226525  Leptosiphon acicularis Lowell Ahart 1979-4-22 s.n. Butte Peter Ahart Ranch. Honcut 50 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
  CHSC45451  Leptosiphon androsaceus Lowell Ahart 1979-4-3 1820 Butte On slope near North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  HSC32655  Leptosiphon bicolor Steven Lagos 1974-4-20 10 Butte Skyway Rd. Comment
  POM74298  Leptosiphon ciliatus C. C. Bruce 1897-06 1964 Butte [No locality information provided] Comment
  CHSC85684  Leptosiphon filipes G. F. Hrusa; T. D. Wilfred 1996-7-9 13171 Butte Sierra Nevada--Plumas National Forest. On roadsides. Approx. 1 m. on 22N89 amd 22N12x. Immed. S of Rogers Cow Camp on Hwy 162. [Lat./Long. on label is '39 degrees 45' N; 121 degrees 18' W']. 1100 Comment
  SEINET3364441 Image available Leptosiphon harknessii E. B. Copeland 1931-7-1 681 Butte Jonesville 1500 Comment
  CHSC96553  Leptosiphon parviflorus L. P. Janeway 2006-4-30 8562 Butte Cascade Range Foothills. East edge of city of Chico; northwest side of Humboldt Road 2.4 km northeast of Bruce Road. 149 Comment
  CAS-BOT-BC341742  Lessingia nana Lowell Ahart 1975-7-5 s.n. Butte Honcut 45 Comment
  JEPS120029  Lessingia nana Lowell Ahart 2012-8-22 18419 Butte On the south side of the paved road to the shooting range in the clay pit, about 1/4 mile east of Larkin Road, about a mile south of the Oroville Airport. Comment
  CAS-BOT-BC341796  Lessingia nemaclada Rimo Bacigalupi; G. T. Robbins 1955-7-15 5305 Butte Rim of Butte Creek Canyon, along Chico-Paradise road, about 5 miles below and southwest of Paradise 304 Comment
  CHSC94563  Lessingia nemaclada Lowell Ahart 2006-9-13 13331 Butte On both sides of Highway 70, at the Cresta Power House, about 2 3/4 miles northeast of Pulga, about 23 miles (air) northeast of Oroville. 452 Comment
  JEPS120622  Lessingia nemaclada Lowell Ahart 2013-11-13 19253 Butte About 50 yards southeast of the Ponderosa Dam spillway. Comment
  CHSC42945  Leucothoe davisiae Lowell Ahart 1987-7-8 5817 Butte Along a side road near Walker Plains Road, about 1 1/2 miles north-east of Coyote Gap, about 6 miles north-east of Pulga. 1341 Comment
  CHSC50321  Leucothoe davisiae Vernon Oswald 1990-5-14 4213 Butte Marsh located ca. 1.5 mile south-southeast along the west branch of Brush Creek. 950 Comment
  CHSC44110  Lewisia kelloggii subsp. hutchisonii L. P. Janeway; R. A. Schlising 1988-7-22 3047 Butte Area of saddle between Coon Hollow and Chips Cr. Near jeep trail. 1920 Comment
  CHSC37670  Ligusticum californicum M. S. Taylor 1982-8-16 4997 Butte At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald mt, ca. 3 mi ne of Stirling City. 1645 Comment
  CHSC6041  Ligustrum vulgare M. MacArthur 1968-6-19 237 Butte Ca. 15 ft. SE of Big Chico Creek and ca. 30 ft. SW PSA bld., bridge, Chico State College. 60 Comment
  JEPS87458  Lilaea scilloides Lowell Ahart 1993-5-17 6948 Butte about 1.5 mi n. & 3 mi. e. Honcut (on w. side of Dunstone Road, about 12 mi s.e. of Oroville) 60 Comment
  UC478545  Lilium kelleyanum E. B. Copeland 1930-7-18 614 Butte Jonesville 1550 Comment
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Dec 13 2006
  CHSC43047  Lilium pardalinum subsp. pardalinum L. P. Janeway 1987-6-27 2334 Butte Along dirt rd 0.6 mi east of Ramsey Bar; just north of 'The Big Hill. 1386 Comment
  CHSC113471  Lilium pardalinum subsp. shastense Lowell Ahart 2014-7-13 19662 Butte South edge of a large wet meadow (some bog), about 100 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  UC478544  Lilium washingtonianum subsp. washingtonianum E. B. Copeland 1931-7-12 615 Butte Jonesville 1600 Comment
  CDA13268  Lilium washingtonianum var. washingtonianum G. F. Hrusa, T. D. Wilfred 1996-7-9 13116 Butte Plumas National Forest; Slopes above Jordan Creek at old Picnic Area above falls before confluence with Marble Creek. Comment
  CHSC111315  Limnanthes alba Julie Kierstead Nelson 2013-4-16 2013 -005 Butte 5 mi. N of Shasta College, NE of Redding, in rural residential area, intersection of Portero and Paso Robles; UTM Zone 10N, 557750E 4500503N. 199 Comment
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Mar 14 2021
  CHSC35708  Limnanthes alba subsp. versicolor J. D. Jokerst 1982-5-19 1576 Butte Top of Lumpkin Ridge 2 mi E of Camp 18, at the S edge of the ridge. 1280 Comment
  CHSC83986  Limnanthes alba subsp. versicolor Lowell Ahart 2003-4-15 10097 Butte Slopes of Beatson Hollow, southwest of drainage entering Beatson Hollow, about 1 1/4 miles northwest of the iron gate and fence, northwest of Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 284 Comment
  HSC43353  Limnanthes douglasii subsp. rosea Maralyn O'Meara 1974-4-20 265 Butte Skyway Rd., 1 mi. E of US 99 61 Comment
  CAS-BOT-BC45930  Limnanthes floccosa subsp. californica A. A. Heller 1914-4-3 11261 Butte 8 miles north of Oroville Comment
  CHSC48594  Limnanthes floccosa subsp. californica Vernon Oswald 1984-3-24 1104 Butte Chico Municipal Airport, ca. 200 ft n-e of the e end of Piper Ave. 82 Comment
  HSC85944  Limnanthes floccosa subsp. californica J. Hunter 1986-3-30 39 Butte 1 km E Chico, 50 m S Hwy. 32 75 Comment
  UC1397268  Limnanthes floccosa subsp. californica R. Ornduff 1968-4-27 6885 Butte 1 mi w Oroville (on Hwy 70) Comment
  CHSC50412  Limonium sinuatum Vernon Oswald; Mary Bailey 1990-6-27 4336 Butte Hwy 99, 0.3 mi southeast of the Skyway-Park Ave interchange in south Chico. 64 Comment
  SEINET10496780  Linanthus androsaceus subsp. laetus Mary Susan Taylor 1974-5-3 Taylor 212 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  UC1377648  Linanthus bicolor John Ingram and Arlynn Ingram 1960-4-5 294 Butte about 2 mi s Paradise (along Neal Road) Comment
  SEINET10496788  Linanthus bicolor Mary Susan Taylor 1974-5-3 Taylor 215 Butte Ca. 500 yds E of Hwy 70, ca. 15 mi N of Oroville. Associates: Lupinus bicolor, Quercus, Erodium, Geranium molle, Geranium dissectum. Comment
  JEPS48319  Linanthus filipes Paul C. Hutchison with J. K. Wright and R. Bacigalupi 1963-6-1 2687 Butte w side Pulga Bridge; North Fork of Feather River 472 Comment
  UC1185290  Linanthus parviflorus H. E. Brown 1896-10-2 185 Butte near Oroville 53 Comment
  CHSC42324  Linanthus pungens R. M. Austin 1896-7-1 109 Butte Mountains-near Colby. Comment
  SEINET13711425  Lindernia dubia Lowell William Ahart, Lowell William Ahart 1999-1 8131 Butte 12 Mi (Air) SW of Chico, 2 Mi SE of Ordbend, Sacramento River Comment
  JEPS124342  Lindernia dubia var. anagallidea Lowell Ahart 2015-10-26 20609 Butte About 1 mile (air) of southeast of Kunckle Reservoir, about 5 miles (air) southeast of Paradise. 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
  CHSC74726  Lipocarpha aristulata B. Castro 1987-8-25 203 A Butte Lower Butte Creek, on cobble and gravel bars along S edge, ca 0.25 mi E of its crossing under Hwy 99, and 2.1 mi S of the Skyway. 60 Comment
  POM106397  Lithocarpus densiflorus var. densiflorus C. C. Bruce 1898-05 2477 Butte Day Hill. Comment
  CAS-BOT-BC430884  Lithophragma bolanderi Frances Brown 1935-5-1 s.n. Butte Near Durham Comment
  CHSC2819  Lithophragma bolanderi David Prall 1965-3-14 9 Butte At edge of cliff ca. 30 yds. south of Neal Rd. 1mile East of HW 99E. 106 Comment
  CHSC29729  Lithophragma bolanderi J. D. Jokerst 1980-4-21 623 Butte Top of North Table Mt., N of Cherokee Rd. Comment
  CHSC7108  Lithophragma parviflorum var. trifoliatum James M. Watson 1969-3-31 4 Butte 4.3 mi e of upper Bidwell Park entrance 100 yds. s of road at edge of canyon. 213 Comment
  UC137062  Lithophragma parviflorum var. trifoliatum Mrs. R. M. Austin Apr. 1896 263 Butte Bluffs Little Chico Creek Little Chico Creek; Bluffs Little Chico Creek Comment
  CAS-BOT-BC428451  Lithophragma trifoliatum Lowell Ahart 1980-3-26 2051 Butte Along Swedes Flat Road, near Bangor. 320 Comment
  CAS-BOT-BC317349  Lithospermum californicum Helen M. Edwards 1917-6-6 s.n. Butte DeSabla. Comment
  CHSC32647  Lithospermum californicum M. S. Taylor; L. Hanson 1981-3-16 3403 Butte Just off tractor-fire road, ca. 1/4 mi n of 21N80, ca. 1/2 mi nw of its jct with Zink Rd, ca. 2 air mi sw of Brush Creek. 944 Comment
  CHSC33582  Lithospermum californicum M. S. Taylor 1981-4-27 3556 Butte Ridge between 21N33 and 21N80, ca. 1 mi sw of Bald Rock Rd, ca. 0.5 mi n of Zink Rd, ca. 2 mi sw of Brush Creek. 1005 Comment
  CHSC90837  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville. 48 Comment
  JEPS107768  Logfia filaginoides Lowell Ahart 2005-5-7 11786 Butte On cliffs, on the east side of North Honcut Creek, Peter Ahart Ranch, about 1 1/4 miles north and 2 3/4 miles east of Honcut, about 12 miles (air) southeast of Oroville 48 Comment
  CHSC26713  Logfia gallica M. P. Hayes 1978-4-7 152 Butte On top of ne butte on Butte College campus at the corner of Pentz and Clark roads. 170 Comment
  CAS-BOT-BC342385  Logfia gallica A. A. Heller 1914-6-2 11148 Butte Hills 8 miles north of Oroville Comment
  CAS-BOT-BC283390  Lolium multiflorum John Thomas Howell 1961-9-22 36714 A Butte On bank of Feather River, Oroville 53 Comment
  CHSC4426  Lolium multiflorum 1966-5-21 Butte Upper Bidwell Park, near Bare Hole, Chico. Comment
  CHSC57166  Lolium multiflorum R. L. Ondricek-Fallscheer 1982-5-26 137 Butte In yard of house on plateau at southwest end of Flatiron Ridge, ca 3 1/2 mi west-southwest of Paradise. 192 Comment
  CHSC75433  Lolium multiflorum Jennifer Slater 1997-4-20 31 Butte At the Wurlitzer addition of the Vina Plains Preserve, west of Highway 99, approx. 10 miles north of Chico. 67 Comment
  CAS-BOT-BC269079  Lolium perenne Lowell Ahart 1980-5-10 2231 Butte Peter Ahart Ranch, Honcut 50 Comment
  CHSC45107  Lolium perenne Lowell Ahart 1988-9-4 6175 Butte Along the north side of a branch of Last Chance Creek, east of the dirt road, about 1 mile west and a little north of Bald Mountain. 1005 Comment
  CHSC8241  Lolium temulentum J. G. Moore 1969-5-7 38 Butte Cohasset Rd., 3 mi. e of Rock Creek Rd. on s side of road. 106 Comment
  UCR187080  Lomatium Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 013 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
  CHSC99541  Lomatium macrocarpum L. P. Janeway 2008-5-26 9373 Butte Northern High Sierra Nevada. Ridge top at head of Rattlesnake Creek (a tribuatary to West Branch Feather River); about 2.9 air km east of Magalia and 0.8 km east of Sawmill Peak. Open rocky serpentine sloping to the west. 951 Comment
  CHSC109524  Lomatium marginatum var. marginatum L. P. Janeway 2012-6-23 10892 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
  JEPS115820  Lomatium utriculatum Lowell Ahart 2009-4-26 15646 Butte About 10 miles northeast of Chico, Upper Bidwell Park about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, on the east side of Guardians Trail, about 200 yards southwest of Pine Trail 381 Comment
  UC1586631  Lonicera hispidula var. vacillans Lowell Ahart 1991-6-22 6664 Butte near Lake Oroville (bottom of the abandoned water ditch, w of Springtown Road) 304 Comment
  CHSC61306  Lonicera involucrata var. involucrata Lowell Ahart 1993-7-22 7086 Butte On the west side of Fall River, about 200 yards west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  UC1609419  Lotus crassifolius var. crassifolius Lowell Ahart 1993-7-29 7126 Butte about 2.5 mi ne Bald Mountain (about .12 mi nw of Snow Mine, about 6.5 mi ne of Stirling City) 1676 Comment
  RSA21306  Lotus humistratus Carl B. Wolf 1937-5-13 8651 Butte Sierra Nevada Foothills, W side of So. Honcut Creek, 2 6/10 mi E of Bangor. 213 Comment
  SEINET10451972  Lotus humistratus Mary Susan Taylor 1978-5-6 Taylor 1571 Butte Just N of Magalia, in large serpentine area along the Skyway. 610 Comment
  UC726519  Lotus incanus A. A. Heller 1919-5-18 13172 Butte Stirline Stirling 1074 Comment
  JEPS103299  Lotus micranthus Lowell Ahart 2002-5-7 9620 Butte High banks of a pond, at the beginning of a SE branch of Schirmer Ravine, ca 50 yards E of the pond on the E side of Cherokee Road, North Table Mountain, ca 4 miles (air) N of Oroville. 228 Comment
  UC1609037  Lotus nevadensis Lowell Ahart 1993-7-31 7135 Butte 1.5 mi se Bald Mountain (ne of Stirling City, on the w side of the dirt road) 1493 Comment
  SEINET10452006  Lotus purshianus Mary Susan Taylor 1978-7-21 Taylor 1795 Butte Vicinity of Lake Madrone, at Oroville- Quincy Hwy turnoff, ca. 10 mi NE of Oroville; Yellow Pine Forest. 610 Comment
  JEPS87135  Lotus scoparius Lowell Ahart 1992-5-9 6763 Butte about 2 air mi n Oroville (on the n side of the Thermalito Diversion Pool); Lake Oroville Recreation Area 76 Comment
  UC1562369  Lotus scoparius Lowell Ahart 1990-5-21 6474 Butte 4.5 mi sw Oroville (0.25 mi s of the Feather River, about 0.4 mi w of Pacific Heights Road) 30 Comment
  UC1609058  Lotus stipularis var. ottleyi Lowell Ahart 1993-6-16 6066 Butte about 3.5 air mi sw Forbestown (sw of the intersection of Black Bart Road and Forbestown Road) 609 Comment
  CHSC112874  Ludwigia decurrens Evan Padgett 2014-8-20 Butte Sacramento Valley. Agricultural fields between Richvale and Highway 162, east of Midway, next to rice fields. 26 Comment
  CHSC114281  Ludwigia decurrens M. Steward; C. Mutters 2011-9-13 Butte South-southwest of Richvale. Comment
  UCD150370  Ludwigia palustris William Anderson 1964-8-15 s.n. Butte Willows-Biggs Rd. Comment
  CHSC21155  Ludwigia peploides M. S. Taylor 1975-10-3 925 Butte In slough at bridge over Big Chico Creek on River Rd, ca. 10 mi w of Chico. 36 Comment
  CHSC84889  Lupinus affinis R. D. Fischer 2003-4-20 5 Butte Upper Bidwell Park, east side of Big Chico Creek. Located at western end of mdw and adjacent road/trail. Northern most patch approx 300 ft south of gated end of park property. 231 Comment
  UCD106017  Lupinus albifrons var. albifrons K. Esau; M. Phillips 1929-4-13 1920 Butte Chico. Comment
  CAS-BOT-BC196252  Lupinus albifrons var. eminens A. A. Heller; H. E. Brown 1902-5-8 5501 Butte Berry Canyon (Near Clear Creek) Comment
  SD2410  Lupinus angustiflorus E. B. Copeland 1929-7-17 378 Butte Above Jonesville, on porous soil in full sunshine 2000 Comment
  SEINET10452024  Lupinus apertus Mary Susan Taylor 1981-5-21 Taylor 3781 Butte T23N R5E nw sec 18, Pulga SW quad. E side of Rd 23N02, ca. 2 mi E of Rag Dump, ca. 6 air mi ne of Magalia. Yellow Pine Forest, on granite soils; 3900 ft. 1189 Comment
  SEINET10484606  Lupinus apertus Mary Susan Taylor 1981-5-13 Taylor 3699 Butte T22n,r63,sec.5 sw 1/4. Pulga se quad. In sandy granite, on ridge above foreman Creek, ca 0.5 mile w of 23n15.5, ca 1.5 mile s of its junction with four trees Road, ca 0.5 mile w of oroville-quincy hwy, ca 2 air miles w of elks retreat. Assoc.; Madia minima 1311 Comment
  CHSC90490  Lupinus bicolor Andrew D. Lane 1984-4-22 9 Butte Salmon Hole, ca. 6.7 km ne of jct of Hwys 99 and 32, ca. 50 m n of Big Chico Creek. 115 Comment
  CHSC35320  Lupinus bicolor var. pipersmithii M. S. Taylor; K. Tharp 1982-4-8 4291 Butte Along both sides of Oroville Dam Blvd, ca. 1.5 mi s of Oroville Dam Visitors Center, Oroville. 243 Comment
  SEINET10452072  Lupinus densiflorus Lowell Ahart 1985-5-6 Ahart 4932 Butte Along Table Mountain Boulevard, south of the Cambell Overflow, 1/2 mile south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  UC1609420  Lupinus grayi Lowell Ahart 1993-6-26 7023 Butte about 1 mi w Lost Creek Reservoir (Mooreville Ridge); , w of the Lost Creek Reservoir 1188 Comment
  SEINET10452693  Lupinus latifolius subsp. longipes Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4197 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
  UC478506  Lupinus lepidus var. sellulus E. B. Copeland 1931-7-3 651 Butte Jonesville , Colby Canyon (Coby Canyon) 1600 Comment
  CHSC88969  Lupinus microcarpus var. densiflorus Christine Hantelman 2000-4-27 82 Butte In drainage cut on north side Wookey road, 0.2 mi east of Meridian. 91 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
  CHSC940  Lupinus nanus var. apricus E. Canfield 1904-4-9 Butte Hooker Oak field. 76 Comment
  RSA754452  Lupinus pachylobus L. Ahart 2009-6-3 15831 Butte About 80 yards S of the gate, in the middle of Ten Mile House Road, Upper Bidwell Park, about 3/4 air miles W of Highway 32, about 10 miles NE of Chico. 210 Comment
  CHSC33125  Lupinus polycarpus J. D. Jokerst 1981-4-10 1291 Butte Top of North Table Mt., ca 300 m N of Cherokee Rd at the W edge of the mountain. Comment
  CHSC40607  Lupinus polycarpus Lowell Ahart 1985-4-1 4873 a Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the intersection of Highway 70 and 149, about 7 miles north of Oroville. 100 Comment
  CHSC42529  Lupinus polycarpus Lowell Ahart 1987-5-6 5523 Butte Along the road, near the Poe Power House on the North Fork of the Feather River, about 2 miles south-east of Jarbo Gap. 277 Comment
  JEPS121988  Lupinus polyphyllus var. burkei Lowell Ahart 2014-7-2 19536 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. Comment
  CHSC34234  Lupinus stiversii M. S. Taylor 1981-5-6 3627 A Butte N side of Ponderosa Way, 0.2 mi n of small bridge over Sucker Creek, ca. 3 air mile of Enterprise Bridge, ca. 4 air mi sw of Feather Falls. 335 Comment
  SEINET10452165  Lupinus vallicola Mary Susan Taylor, L. Hanson 1981-4-30 Taylor 3572 Butte T19N R5E ne sec 13, Forbestown quad. NW corner of jct of Forbestown Rd and Lumpkin Rd (Feather Falls turnoff), ca. 10 air mi E of Oroville. 1800 ft. 549 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
  SEINET10491004  Lupinus vallicola subsp. vallicola Taylor 1981-5-5 Taylor 3601 Butte Forbestown quad. E side of limpkin-laporte road, 1 mi n of enterprise bridge Over south fork feather river, ca 10 air mi e of oroville. Granitic soils. Associates: cheilanthes californica, diplacus grandiflorus, trifolium Microcephalum. 457 Comment
  CHSC52705  Luzula cascadensis L. P. Janeway 1987-6-13 2207 Butte Along Dogwood Creek; road to Mayaro 2.4 mi E of Concow Road. 990 Comment
  RSA0058986  Luzula cascadensis Barbara L. Wilson, Lowell Ahart, Lawrence Janeway, Peter F. Zika 2011-8-5 16761 Butte Along Mooreville Ridge Road (Forest Service Road 20N09) near junction with Pinkard Creek Road, above Lost Creek Reservoir. 1149 Comment
  POM196138  Luzula comosa E. B. Copeland 1929-7-16 345 Butte Jonesville. 1550 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
  CHSC113511  Luzula comosa var. comosa Lowell Ahart 2014-7-7 19598 Butte On the south side of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1664 Comment
  CHSC71659  Luzula parviflora Vernon H. Oswald; Lowell Ahart 1998-8-11 9469 Butte USFS 28N35 at a branch of Wildcat Creek ca. 1 mi north of Four Trees-Coyote Gap Rd. 1396 Comment
  CHSC101701  Luzula subsessilis Lowell Ahart 2009-4-26 15621 Butte On the south side of a small open meadow, about 150 yards southwest of Ten Mile House Road, Upper Bidwell Park, about 1/2 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 286 Comment
  CHSC48485  Lycopus americanus Vernon Oswald 1983-10-10 1064 Butte Growing on the e bank of Pine Creek just s of the Calif. Hwy. 32 bridge. Comment
  JEPS88581  Lycopus americanus Vernon H. Oswald and Lowell Ahart 1996-7-22 8079 Butte edge of farm rd. crossing branch of Angel Slough w. Refuge H.Q.'s (s.e. corner of Tract 1-Sanctuary 1, U.S. Fish & Wildlife Service parcel betw 7 Mile Lane & Sacramento R.); Sacramento R. Nat'l Wildlife Refuge, Llano Seco Unit 32 Comment
  CHSC31795  Lythrum hyssopifolia L. Ahart 1973-5-24 225 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC38546  Lythrum hyssopifolia Vernon Oswald 1983-5-31 583 Butte Upper Bidwell Park, Chico, near the trail on the s side of Chico Creek between Day Camp and the power lines. 91 Comment
  CHSC78256  Lythrum salicaria Lowell Ahart 2000-7-2 8551 Butte Wet area on the east side of Highway 70, a little north of Garden Drive, north of Thermalito, about 1 1/2 miles north of Oroville. 73 Comment
  SEINET12194607  Lythrum salicaria Unknown 1984-1 4782 Butte ca 5 mi SW of Oroville, W of Pacific Heights Road 40 Comment
  SEINET10841138  Lythrum tribracteatum Lowell Ahart 1991-6-5 Ahart 6659 Butte On the north side of Rutherford Road, Gray Lodge Waterfowl Management Area, about 1/4 mile west of Pennington Road, about 10 miles southwest of Gridley. Freshwater Marsh. T17N R1E S13. 20 Comment
  JEPS119913  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. Comment
  CHSC103979  Madia exigua Lowell Ahart 2010-5-7 16620 Butte On the north side of a trail, west of disk golf area, on a ridge about 350 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico. 353 Comment
  CHSC116221  Madia exigua Lowell Ahart 2015-6-16 20231 Butte On the west side of the paved road, about 3 1/2 miles (by road) northwest of Fall River Bridge, about 5 miles (air) northwest of Camp 18, about 8 1/2 miles (air) northeast of Feather Falls. 1301 Comment
  CHSC60956  Madia exigua Lowell Ahart 1993-6-20 6979 Butte At Camp 18, about 5 (air) miles north-east of Feather Falls. 1158 Comment
  CAS-BOT-BC334652  Madia glomerata H. M. Hall 1914-7-22 9774 Butte Jonesville Comment
  CAS-BOT-BC342962  Madia gracilis E. B. Copeland 1931-8-14 s.n. Butte Jonesville 1500 Comment
  CHSC34056  Madia gracilis L. Ahart; M. S. Taylor 1981-8-15 3037 Butte Near the dirt road on n side of Snag Lake, ca. 10 mi n of Inskip. 1500 Comment
  CHSC84184  Madia gracilis Lowell Ahart 2003-6-30 10323 A Butte Near the small stream, on the southeast 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
  CHSC97015  Madia gracilis L. P. Janeway 2007-7-9 9109 Butte Northern High Sierra Nevada. Plumas National Forest; near Road 21N25 in the southeastern corner of Watson Ridge, 1.0 km north-northeast of the mouth of Kenebeck Creek at Fall River and Nelsons Crossing. 1128 Comment
  CHSC47079  Maianthemum stellatum R. A. Schlising; L. Janeway 1988-7-1 4553 Butte N part of county, NE of Snow Mountain. Comment
  CHSC39354  Malacothrix floccifera Lowell Ahart 1983-7-29 4244 Butte Along the dirt road, about 1 mile east of Milsap Bar, about 25 miles north-east of Oroville. 750 Comment
  SBBG128805  Malacothrix floccifera L. Ahart, J. Dittes, J. Guardino 2013-4-26 18627 Butte rocky serpentine outcrop on N side of St Hwy 20, just E of Lake County Line, 12.2 mi (air) ENE of Clear Lake (town), 17.1 mi (air) W of Williams 566 Comment
  CHSC45328  Malva neglecta Vernon Oswald 1983-10-10 1058 Butte City of Chico Sewage Treatment Plant on Chico River Rd., 1/4 mi w of its jct with Alberton Ave. Comment
  CHSC11097  Malva nicaeensis Lowell Ahart 1969-5-15 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC46834  Malva parviflora R. A. Schlising 1986-11-28 4510 Butte Gray Lodge Waterfowl Management Area. 18 Comment
  CHSC28647  Marah watsonii M. S. Taylor 1979-3-20 1960 Butte Along old road on n side of Feather River. Ca. 1/4 mi n of Hwy 70, ca. 10 mi n of Oroville. 304 Comment
  SEINET10448099  Marah watsonii Mary Susan Taylor 1980-4-18 Taylor 2525 Butte On dry open bluff, on E side of Humbug Road, ca. 3 mi SW of Nimshew; Foothill Woodland. With J.D. Jokerst. 518 Comment
  CHSC754  Marrubium vulgare M. Davidson; Vesta Holt label. 1929-5-6 Butte Bidwell Park. 60 Comment
  SEINET10530351  Marsilea vestita Mary Susan Taylor 1980-7-6 Taylor 3051 Butte T23N R1E nw sec 20, Richardson Springs quad; ca. 1 mi E of Meridian Rd, ca. 1/4 mi NE of its jct with Hwy 99, ca. 8 mi N of Chico. With R.A. Schlising. 67 Comment
  CHSC38239  Marsilea vestita subsp. vestita Vernon Oswald 1983-5-25 549 Butte Upper Bidwell Park, Chico, at Horseshoe Lake. 100 Comment
  CDA42742  Marsilea vestita subsp. vestita L. Ahart 2002-5-15 9659 Butte About 100 yards east of Parking Lot 10, Gray Lodge State Wildlife Management Area, about 4 miles (air) southwest of Gridley. 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
  SEINET10938065  Matricaria matricarioides Mary Susan Taylor 1982-4-28 Taylor 4347 Butte T17N R1E se/s sec 13. Pennington quad. Graylodge Waterfowl Refuge, n side of Rutherford Rd, 1/8 mi w of Pennington Rd, ca. 12 mi sw of Gridley. 70 ft. 21 Comment
  CHSC1206  Meconella californica S. Carter 1929-3-25 Butte Richardson Springs road. Comment
  CHSC42202  Meconella californica Victoria Lorber 1986-3-18 Butte S bank of Butte Creek, ca 150 yd wsw of Covered Bridge, ca 7 mi e of Chico. 91 Comment
  CDA32010  Medicago lupulina L. Ahart 2009-6-3 15834 Butte On the east bank of Big Chico Creek, on the west side of the dirt road which is Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) west of Highway 32, about 10 miles northeast of Chico Comment
  CHSC45286  Medicago lupulina Vernon Oswald 1987-5-12 2387 Butte Butte Creek Reserve on the s side of Butte Creek, n of the Skyway, near the Crouch Ditch Dam. 79 Comment
  CHSC97690  Medicago polymorpha Lowell Ahart 2007-11-3 14571 Butte Along a very small stream, below the high water line of Lake Oroville, about 3/4 mile east of the Power House below Kunckle Reservoir, about 1 1/4 miles north of the Lime Saddle Campground, about 5 miles (air) southeast of Paradise. 259 Comment
  CHSC99634  Medicago polymorpha H. Koeth 2007-4-26 Butte 20th and Salem Street, Chico. UTM 10 600693E 4396754N. 57 Comment
  UC1594676  Medicago praecox Lowell Ahart 1992-3-21 6739 Butte Oroville Dam; e side, s side of spillway 274 Comment
  CAS-BOT-BC47739  Melia azedarach John Thomas Howell 1961-9-22 36739 Butte Feather River, Oroville 53 Comment
  CHSC88189  Melica aristata Lowell Ahart 2004-7-23 11299 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
  CHSC6103  Melica californica A. R. Jaegel 1968-4-24 137 Butte On cutbank, 2 mi e of Centerville on Humbug Rd. Comment
  UCD87019  Melica californica A. A. Heller 1918-5-5 13012 Butte Butte county. Near Magalia. Comment
  CHSC109843  Melica harfordii L. P. Janeway 2012-6-27 10914 Butte Northern High Sierra Nevada. Near the top of Sunset Hill, just a little over the north side. 1000 Comment
  SD122518  Melica harfordii Lowell Ahart, Peter Ahart 1984-6-10 4713 Butte About 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  UCD88607  Melica subulata E. B. Copeland 1929-7-16 338 Butte Jonesville. 1500 Comment
  CHSC43843  Melissa officinalis B. Castro 1987-8-25 209 Butte Butte Ck ca 1/2 mi e of its crossing of Hwy 99 (ca 2.1 mi s of Skyway in Chico). 68 Comment
  JEPS108134  Melissa officinalis Lowell Ahart 2005-11-12 12483 Butte Bottom of Dark Canyon Creek, about 50 yards south of the train tunnels, west of Dark Canyon Road, about 2 1/2 miles (air) south of Highway 70 at Big Bend Road 293 Comment
  RSA0080125  Melissa officinalis Lowell Ahart 2012-6-14 18195 Butte West of the foot bridge across Big Chico Creek, about 100 yards east of Mangrove Avenue, Annie's Glen, Lower Bidwell Park, Chico. 62 Comment
  CHSC109759  Mentha arvensis Lowell Ahart 2012-10-20 18495 Butte About 50 yards west of Table 4, west of Cedar Grove, Lower Bidwell Park, Chico. 68 Comment
  HSC100741  Mentha arvensis Lowell Ahart 2009-7-9 16009 Butte E side of Ten Mile House Rd., Upper Bidwell Park, ~3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 236 Comment
  SEINET10498158  Mentha arvensis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4185 A Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  JEPS102335  Mentha pulegium Lowell Ahart 2001-6-1 8746 Butte 5 air miles SW of Oroville (S side of access road to boat ramp at margin of the Thermalito Afterbay, W of Larkin Rd, 1 1/4 mi S of Oroville Airport) 42 Comment
  RSA771481  Mentha pulegium George K. Helmkamp, E. A. Helmkamp 2009-9-5 15577 Butte Lower Honcut Road, 1.2 miles east of its junction with CA-70, 1.85 mi. WSW (258 deg ) of Honcut, 7.2 mi. SE (114 deg ) of Gridley 35 Comment
  SEINET10498207  Mentha spicata Mary Susan Taylor 1975-10-31 Taylor 981 Butte Along creek, ca. 500 yds N of Pentz Rd, in Butte College Campus, ca. 12 mi S of Chico. 91 Comment
  CHSC30653  Micranthes fallax M. S. Taylor 1979-5-4 1989 Butte Along Millsap Bar Rd, 4 mi ne of its jct with Brush Creek Rd, ca. 26 mi ne of Oroville. 1005 Comment
  CHSC38679  Micranthes fallax Vernon Oswald 1983-3-7 130 Butte Upper Bidwell Park, Chico, along the dirt road leading to the Police Pistol Range. 91 Comment
  CAS-BOT-BC428992  Micranthes fragosa Lowell Ahart 1980-3-26 2067 Butte Near Hurleton. 600 Comment
  CAS-BOT-BC429041  Micranthes nidifica Lowell Ahart 1983-2-21 3902 Butte Peter Ahart Ranch, about 2 1/2 miles north and 1/2 mile east of Honcut 35 Comment
  UCR187081  Micropus californicus Anna M. Hurlbutt, Carl R. Weeks 2007-4-26 012 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
  RSA113229  Micropus californicus E. K. Balls, L. W. Lenz 1965-5-13 20693 Butte 0.5 mile south of Paradise on road from Oroville to Magalia 427 Comment
  RSA393758  Micropus californicus M. M. Boney 1897-1 s.n. Butte [No locality information provided] Comment
  CHSC6064  Micropus californicus var. californicus E. Parreno 1968-5-10 88 Butte Skyway se side ca. 5 mi from Paradise. Comment
  CAS-BOT-BC348462  Micropus californicus var. californicus Peter H. Raven 1953-5-9 5453 Butte 3.3 miles from Bangor on road to Oroville Comment
  JEPS115236  Microseris acuminata Lowell Ahart, John Dittes 2009-3-20 15516 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
  CAS-BOT-BC348692  Microseris acuminata K. L. Chambers 1952-5-17 410 Butte Ca. 2 mi. s.w. of Paradise on canyon rim road to Chico, on flat table mountain high above Butte Creek Comment
  CHSC44273  Microseris nutans V. Oswald; L. Ahart 1988-6-17 3395 Butte Hillside at the n side of the dam at Lost Creek Reservoir. 1036 Comment
  CHSC42770  Mimetanthe pilosa Lowell Ahart 1987-8-8 5853 Butte On the bottom of North Honcut Creek, about 2miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC96952  Mimetanthe pilosa Lowell Ahart 2007-7-8 14270 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
  SEINET10896229  Mimulus angustatus Mary Susan Taylor 1975-4-26 Taylor 528 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
  SEINET12319567  Mimulus angustatus C. A. Gardner 1974-1 14 Butte Table Mountain, ca 6 mi N of Oroville 244 Comment
  RSA149055  Mimulus aurantiacus var. grandiflorus Dorothy Wiggins 1961-6-10 16312 Butte 0.2 mile E of Cresta Dan Power Station n Feather river, along U.S. Hwy Alternate 40 Comment
  UC660011  Mimulus bicolor Lincoln Constance 1941-5-28 2831 Butte Magalia Sierra Nevada foothills, South Branch Feather River 487 Comment
  CDA41428  Mimulus glaucescens Schoenig 1998-7-5 98 -76 Butte East roadside of Highway 32, circa 1 mile north of road to Butte Meadows. Vicinity of Loma. Comment
  JEPS50780  Mimulus glaucescens Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9282 Butte just above Pulga Bridge; North Fork Feather River Canyon Comment
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Mar 15 2006
  JEPS5590  Mimulus glaucescens R. F. Hoover 1938-4-24 3248 Butte 3 mi n Chico Comment
  SFV3381  Mimulus glaucescens B. Fuller 1962-5-26 Butte Sierra Nevada Paradise. Lot 55, Harrison Road. 520 Comment
  RSA718738  Mimulus guttatus L. Ahart 2006-7-25 13063 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SFV3394  Mimulus guttatus M. L. Vincent 1962-4-16 197 Butte Butte Creek Canyon. Honeyrun road, 0.5 miles west of Paradise. Comment
  UC195474  Mimulus moniliformis A. A. Heller 1914-6-22 11511 Butte Chico Meadows 1219 Comment
  CHSC44686  Mimulus moschatus R. Banchero 1980-6-12 207 Butte Along Hwy 32 ca 3.9 mi S of tis jct with Humboldt Rd, 8.3 mi N of the town of Forest Ranch. 999 Comment
  CHSC44717  Mimulus moschatus R. Banchero 1980-6-23 261 Butte Along Eagle Gulch Rd 1.8 mi N of its jct with Laporte Rd, 1.6 mi SW of Sly Reservoir. 1066 Comment
  JEPS121901  Mimulus primuloides var. primuloides Lowell Ahart 2014-7-10 19613 Butte About 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  UC1609348  Mimulus pulsiferae Lowell Ahart 1993-6-20 6993 Butte about 1 air mi nw Lost Creek Reservoir Dam; Mooreville Ridge, Jackass Flat 1158 Comment
  JEPS121996  Mimulus torreyi Lowell Ahart 2014-7-13 19660 Butte About 150 yards southeast of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. Comment
  SEINET10929293  Mimulus torreyi Mary Susan Taylor 1978-7-18 Taylor 1682 Butte On N side of Old Humboldt Road in open gravelly-rocky area in Yellow Pine Forest, ca. 1 mi E of junction of Old Humboldt Road and Hwy 32, ca. 5 mi W of Butte Meadows. 1326 Comment
  CAS-BOT-BC174593  Minuartia californica A. A. Heller 1914-3-18 11208 Butte Eight miles north of Oroville Comment
  UCSC008596  Minuartia californica Randall Morgan 2008-4-1 4840 Butte Originally from Ahart Ranch Comment
  JEPS110185  Minuartia cismontana Lowell Ahart 2006-4-28 12548 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
  CAS-BOT-BC433045  Mitella pentandra E. B. Copeland 1930-6-24 644 Butte Jonesville 1500 Comment
  CDA3374  Mollugo verticillata L. Ahart 1998-7-1 8029 Butte 20 yards south of an east west fence, in the tracks of a poor dirt road, about 5/8 mile north of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  UCD99630  Mollugo verticillata Rimo Bacigalupi; L. R. Heckard 1962-6-1 8581 Butte road to Centerville, about 200 feet east of its inception at the Paradise Road junction. 60 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
  CHSC43014  Monardella sheltonii L. P. Janeway 1987-6-26 2286 Butte 8.5 mi EW of Stirling City and 0.1 mi W of Fiver Corners on the road from Stirling City to Rag Dump. 1127 Comment
  CHSC86435  Monardella sheltonii Jenny Marr 1994-6-13 83 Butte Located in Northern Sierra Nevada, north of the town of Magalia, on an exposed serpentine outcrop belonging to LNF. Site approx. 0.3 air miles north of Magalia Reservoir. 759 Comment
  JEPS115268  Monardella sheltonii Lowell Ahart 2009-5-30 15982 Butte Open area west of the Guardian Rock Trail, about 60 yards north of Pine Trail, about 3/8 mile (air) southwest of the intersection of Ten Mile House Road and Highway 32, Upper Bidwell Park, about 10 miles northeast of Chico 398 Comment
  POM252835  Monardella sheltonii A. A. Heller 1938-6-14 15151 Butte On a stony open slope in serpentine 23 miles from Oroville River Highway. Comment
  POM70490  Monardella sheltonii C. C. Bruce 1897-05 1974 Butte Little Chico. Comment
  UCR280840  Monardella sheltonii Lowell Ahart 2016-6-29 21051 A Butte north side of Lumpkin Road, c. 100 yards north of McCabe Creek, c. 3 air miles west of Forbestown 388 Comment
  HSC93643  Monardella venosa B. Castro 1996-5-18 659 Butte 5.5 mi. SE of Paradise, in bottom of unnamed canyon just S of Neal Rd., 60 ft. N of creek channel directly under transmission lines 85 Comment
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Dec 20 2012
  UCD125266  Monardella venosa James D. Jokerst 1992-5-19 3355 Butte Unmaned canyon north of Nugen Canyon on the south side of Neal Road, near the Butte County Sanitary Landfill. 76 Comment
  UC1748331  Monardella villosa subsp. villosa James D. Jokerst 1986-6-29 2743 Butte Crooked Bar Middle Fork Feather River 579 Comment
  UC1586510  Monochoria vaginalis Vernon H. Oswald and Lowell Ahart 1991-8-28 4854 Butte Rice Experiment Station on the south side of Highway 162, ca. 3.5 mi north-northwest of Biggs. 30 Comment
  UC392218  Montia chamissoi E. B. Copeland 1929-7-28 Butte Jonesville 1500 Comment
  CHSC50557  Montia diffusa Vernon Oswald 1990-7-10 4361 Butte Bryant Ravine Rd 0.25 mi north of Feather Falls Trailhead, ca. 1.5 mi (air) north-northwest of the town of Feather Falls. Scattered plants in disturbed soil along a short track leading to Bryant Ravine Creek. 749 Comment
  CAS-BOT-BC444884  Montia fontana Lowell Ahart 1979-5-12 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  UC1562481  Montia linearis Vernon H. Oswald and Lowell Ahart 1990-5-29 4270 Butte between the Skyway and Philbrook Road (Chaparral Guard Station on Humbug Road); Chaparral Guard Station 1536 Comment
  CHSC54327  Montia parvifolia Vernon H. Oswald; Lowell Ahart 1991-6-5 4652 Butte Dirt road to Minnie-Ha-Ha Mine located on Big Chico Creek, on the west side of Hwy 32 ca. 1.5 miles (air) northwest of Platte Mtn Lookout, between Forest Ranch and Lomo. 792 Comment
  CHSC20539  Morus alba Pamela Caldwell 1972-3-18 Butte Back parking lot of A. J. H. Bldg. CSUC campus. Comment
  CHSC46691  Muhlenbergia andina V. Oswald; L. Ahart 1989-8-15 3937 Butte Soda Ridge Rd, 1.4 mi w of its junction with Coon Hollow Rd, ca. 1.2 mi (air) n of Philbrook Reservoir. On the edge of a lake n of and visible from the road. 1752 Comment
  RSA725280  Muhlenbergia andina L. Ahart 2006-9-11 13306 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
  RSA725281  Muhlenbergia andina L. Ahart 2006-8-15 13174 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  CHSC38834  Muhlenbergia mexicana Vernon Oswald 1983-9-4 1035 Butte Upper Bidwell Park, Chico, on the floodplain on the s side of Chico Creek ca. 500 ft upstream from Five Mile Recreation Area. 85 Comment
  CAS-BOT-BC274932  Muhlenbergia rigens Willis H. Wheeler 1940-10-9 846 Butte Foreign Plant Introduction Station, Chico Comment
  CHSC20052  Myosurus apetalus var. borealis M. S. Taylor 1975-4-18 483 Butte In vernal pool, sw corner of Broyles Rd and Hwy 99, ca. 5 mi n of Chico. Comment
  CAS-BOT-BC83262  Myosurus minimus A. A. Heller 1915-3-23 11775 Butte Sacramento Valley, 11 miles north of Chico. Comment
  CHSC110985  Myrtus communis Lowell Ahart; Susan Bazell, Josephine Guardino, Wes Dempsey 2012-6-21 18226 Butte North side of Caper Acres Playground, Lower Bidwell Park, Chico. 62 Comment
  CAS-BOT-BC515978  Narthecium californicum Lowell Ahart 1984-7-19 4760 Butte About 1/2 mile east of Bald Mountain, about 5 miles north-east of Stirling City 1750 Comment
  CHSC6156  Nassella pulchra E. Parreno 1968-4-19 66 Butte Roadside of Cherokee Rd. e of Cherokee cemetery. Comment
  CAS-BOT-BC60375  Nasturtium officinale Lowell Ahart 1989-5-23 6239 Butte North of the new subdivision road, 0.5 mile east of Dunstone Drive, about 0.5 mile north of Bangor Park Road. 76 Comment
  SEINET10832615  Navarretia Mary Susan Taylor 1978-7-19 Taylor 1789 Butte Scattered in meadow on N end of Snag Lake between creek and Humbug Road, ca. 3 mi S of junction of Humbug Road and Scotts John Road; Yellow Pine Forest and Montane Meadow. 1676 Comment
  CHSC116984  Navarretia divaricata subsp. vividior Lowell Ahart 2016-6-4 20938 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
  CHSC27048  Navarretia filicaulis Lowell Ahart 1978-7-2 1780 Butte Along Robinson Mill Road, Bangor. Near the edge of the road. 350 Comment
  CHSC30951  Navarretia filicaulis L. Ahart 1980-7-4 2454 Butte Near the Oak Grove Cemetary, ca. 1/2 mi se of Hurleton. 600 Comment
  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
  JEPS120850  Navarretia filicaulis Lowell Ahart 2013-7-1 18818 Butte About 150 yards E of the intersection of Forbestown Road and Black Bart Road, about 3.25 air miles SW of Forbestown. Comment
  JEPS17648  Navarretia filicaulis Rimo Bacigalupi with G. T. Robbins 1955-7-18 5365 Butte 0.3 mi below and w Lomo Inn, Lomo (at junction of Humboldt Road to Butte Meadows, along State Hwy 32) 1036 Comment
  UC1111635  Navarretia filicaulis Lewis S. Rose 1955-6-15 55101 Butte 6 mi se Paradise (on Pentz Road) 426 Comment
  UC423491  Navarretia filicaulis David D. Keck 1930-7-25 976 Butte 10 mi e Oroville; Sierra Nevada, Hurleton 487 Comment
  CHSC34989  Navarretia intertexta subsp. propinqua R. A. Schlising; R. Banchero 1980-7-14 3893 Butte Along Skyway, 4.2 mi N of Inskip (= 0.8 mi N of jct with Bull Hill Road to Butte Meadows). Meadow/pasture. 1511 Comment
  CHSC37131  Navarretia intertexta subsp. propinqua M. S. Taylor 1978-9-9 1917 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  CHSC11952  Navarretia leptalea E. B. Copeland 1930-6-28 444 Butte Jonesville. In 'Scotch John' meadow. 1650 Comment
  UC879888  Navarretia leptalea subsp. leptalea A. A. Heller 1917-7-26 12817 Butte Butte Meadows 1280 Comment
  CHSC24156  Navarretia leucocephala B. Bunge 1976-4-19 19 Butte Ca 25 yd nw of intersection of Notre Dame Blvd. and Skyway. Chico. 67 Comment
  SEINET12326950  Navarretia leucocephala Unknown 1982-1 19 Butte ca 16 km N of Chico, 1.5 km W of Hwy 99, 50 m N of Broyles Rd Comment
  CHSC1297  Navarretia pubescens V. Holt 1942-5-23 Butte Salmon Hole, Chico Creek. 152 Comment
  JEPS24408  Navarretia pubescens Lewis S. Rose 1945-5-12 45012 Butte Richardson Springs 304 Comment
  RSA755443  Navarretia pubescens L. Ahart 2009-5-23 15727 Butte About 20 yards east of Ten Mile House Road, Upper Bidwell park, about 3/4 air mile west of Highway 32, about 10 miles northeast of Chico. 235 Comment
  POM65213  Navarretia squarrosa A. A. Heller, H. E. Brown 1902-5-7 5477 Butte Berry Canyon (Near Clear Creek). Comment
  CHSC91118  Navarretia tagetina Lowell Ahart 2005-5-28 11816 Butte Along the south edge of Cox Lane, about 2 miles east of Palermo Honcut Highway, about 10 miles (air) southeast of Oroville. 91 Comment
  UC196279  Navarretia viscidula A. A. Heller 1914-5-22 11427 Butte about 5 mi n Chico (on the Richardson Springs road) Comment
  CHSC64123  Navarretia viscidula subsp. purpurea B. Castro; L. P. Janeway 1988-6-5 262 Butte On slope above Little Chico Ck. 243 Comment
  CHSC32657  Nemophila heterophylla M. S. Taylor; L. Hanson 1981-3-16 3411 Butte Shaded embankment, e side of Truex Rd, ca. 0.5 mi s of its jct with Hwy 70, ca. 7 mi n of Oroville. 304 Comment
  UC726894  Nemophila heterophylla A. A. Heller 1940-4-28 15563 Butte opposite the Golf Links (on Big Chico Creek, e of Chico); e of Chico, Big Chico Creek, oppos Golf Links Comment
  UC726895  Nemophila heterophylla A. A. Heller 1940-4-10 15536 Butte along Big Chico Creek opposite Golf Links; along Big Chico Creek opposite Golf Links Comment
  SEINET5520962  Nemophila heterophylla H. P. Chandler 1908-4-5 8025 Butte Near Oroville, in the foothills of the Sierra Nevada 150 Comment
  UC24189  Nemophila heterophylla Winifred Paine 1902-3-29 Butte Chico Comment
  UCSC009427  Nemophila pedunculata Lowell Ahart 2015-4-27 20088 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville 304 Comment
  SEINET10964650  Nicotiana acuminata var. multiflora Lowell Ahart, Peter Ahart 1983-8-10 Ahart 4270 Butte T18N R5E sec 14? Along La Porte Rd, ca. 4 mi ne of Bangor. Foothill Woodland; 350 m. 350 Comment
  CHSC14106  Nicotiana quadrivalvis L. V. Ritter 1969-6-15 381 Butte Mand T Corporation Land, near Murphy Slough along bank of Sacramento River. Comment
  CHSC66447  Nicotiana quadrivalvis Vernon H. Oswald; Lowell Ahart 1996-6-10 7736 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the riprapped bank of the Sacramento River at the N end of the Riparian Sanctuary. 28 Comment
  CHSC75975  Nicotiana quadrivalvis Lowell Ahart; Vernon H. Oswald 1999-8-13 8136 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
  UCD110208  Notholithocarpus densiflorus Tracy I. Storer 1961-6-6 s.n. Butte State Highway 32, 27 miles east of Chico. Comment
  JEPS104337  Odontostomum hartwegii Lowell Ahart 2003-5-14 10173 Butte Wash, Peter Ahart Ranch, ca 2 mi n and 2 mi e of Honcut, ca 12 mi se of Oroville. 48 Comment
  JEPS120090  Odontostomum hartwegii Lowell Ahart 2012-6-2 18140 Butte About 100 yards north of Truex Road, west of the intersection of Truex Road and Trevor Road, about 1/8 mile northwest of the West Branch Bridge across Lake Oroville. Comment
  SEINET3992254  Odontostomum hartwegii Rimo Bacigalupi, Drs. Herbert and Lucille Mason 1958-4-24 6323 Butte Along Cohasset Road, 1 mi N. of Chico airport, drainage of Mud Creek 91 Comment
  UCD113663  Oemleria cerasiformis Vernon H. Oswald 1994-3-30 6034 Butte In Beatson Hollow on North Table Mtn., along a jeep road 0.7 mi W of Cherokee Rd. Branch. 304 Comment
  CHSC110411  Oenothera elata subsp. hirsutissima Lowell Ahart 2012-10-28 18537 Butte on the south side of the paved park road, southwest of the old walnut orchard, south of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chioco. 76 Comment
  CHSC83452  Ophioglossum californicum Lowell Ahart 2003-1-16 10022 Butte Near a wash, open pasture field, Joie Osgood Ranch, about 2 1/2 miles north and 3 and 3/4 miles east of Honcut, about 12 miles southeast of Oroville. 68 Comment
  CHSC43190  Oreostemma alpigenum var. andersonii Robert Banchero 1981-7-19 595 Butte Butte Creek House, ca 3 air mi NE of Jonesville. 1755 Comment
  CHSC27798  Orobanche fasciculata Lisa Sedlacek 1978-4-25 17 Butte Collected on Cohasset Rd. 4 mi n of Rock Creek Rd. and 1/2 mi e. 548 Comment
  RSA0006076  Orthocarpus brownii A. A. Heller, H. E. Brown 1902-5-6 5459 Butte Berry Canyon (near Clear Creek). Comment
  RSA636049  Orthocarpus erianthus Michael A. Vincent, Ethan H. Freid 1998-4-6 8125 Butte Table Mountain. Comment
  RSA401999B  Orthocarpus erianthus J. Doty 1969-4-1 619 Butte East side of State Hwy 70, just north of turnoff to Palermo, ca. 4 miles south of Oroville. Comment
  RSA727539  Orthocarpus lacerus 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
  CHSC60946  Osmorhiza chilensis Lowell Ahart 1993-7-6 7059 Butte Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC89745  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
  CHSC31776  Oxalis laxa L. Ahart 1975-5-12 765 Butte On North Honcut Creek. Peter Ahart Ranch, Honcut. 45 Comment
  CHSC84127  Oxalis laxa Lowell Ahart 2003-4-30 10119 Butte Between dredge tailings, where there is a brake in the levee, about 100 yards south of the Feather River, on the west side of the dirt road in the Oroville Wildlife Area, about 3/5 of a mile west of Pacific Heights Road, about 5 1/2 miles (air) southwest of Oroville. 39 Comment
  RSA690970  Oxalis laxa L. Ahart 2003-4-30 10119 Butte About 100 yards south of the Feather River on the west side of the dirt road in the Oroville Wildlife Area about 5.5 miles(air) southwest of Oroville. 40 Comment
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Dec 18 2015
  SEINET10454540  Oxypolis occidentalis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4193 Butte T25N R5E se 1/4 se 1/4 36. Jonesville SW. N side of Coon Hollow Rd, 1.2 mi E of its jct with Humbug Rd, ca. 12 mi NE of Stirling City. 5500 ft. 1676 Comment
  CHSC35669  Packera eurycephala var. lewisrosei R. E. Preston 1982-4-22 260 Butte Lakeside; Lake Oroville, ca. 1/2 mi ne of Lime Saddle Powerhouse, ca. 4.5 mi se of Paradise. 286 Comment
  JEPS110194  Packera subnuda Lowell Ahart 2006-7-16 12978 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
  UC768483  Panicum acuminatum var. acuminatum R. F. Hoover 1936-5-21 1165 Butte 7 mi n Chico; n of Chico Comment
  UCD89510  Panicum capillare L. E. Hazeltine 1916-7-11 s.n. Butte Chico. Comment
  CHSC94761  Panicum dichotomiflorum subsp. dichotomiflorum Lowell Ahart 2006-9-11 13308 Butte South edge of the North Fork of the Feather River, north side of Highway 70, about 1/8 mile west of Poe Dam, about 3/4 mile northeast of Pulga, about 21 miles (air) northeast of Oroville. 431 Comment
  UC1037260  Panicum dichotomiflorum subsp. dichotomiflorum E. Wilson 1934-9-3 49 Butte Biggs Rice Station Comment
  CDA6403  Parentucellia viscosa L. Ahart 2000-5-17 8367 Butte On the south margin of the Thermalito Afterbay, north of the poor dirt road, just west of the cottonwood tree, about 1/8 mile north of the Richvale Highway, about 3/4 mile east of Highway 99, about 7 1/4 miles (air) west of Oroville. Comment
  HSC92450  Parentucellia viscosa L. Ahart 1976-5-25 1128 Butte S side of Cox Lane, 1/10 mi. W of Palermo Honcut Hwy., 4 mi. N of Honcut, 10 mi. S of Oroville 34 Comment
  CHSC36099  Parnassia palustris R. A. Schlising; K. Tarp 1982-7-24 4337 Butte E of Stirling City at West Branch of the Feather River, below Diversion Dam on Retson Road. 975 Comment
  RSA769674  Parvisedum pumilum L. Ahart 2009-4-22 15603 Butte W side of Guardians Trail, about 100 yards N of Pine Trail, Upper Bidwell Park, W of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 382 Comment
  SEINET12216577  Parvisedum pumilum A. R. Shepard 1981-1 12 Butte T23N, R1W, Sec. 4 NE quarter, ca 15 mi N of Chico and 900 ft W of Singer Creek; 58 Comment
  CHSC6744  Paspalum dilatatum V. Hagaman 1968-6-1 581 Butte Corner of 2nd street and Chestnut, Chico. Comment
  RSA126975  Paspalum dilatatum H. S. Yates 1936-8-14 6128 Butte 2 miles S. S. W. of Nielson 30 Comment
  SEINET10507543  Paspalum dilatatum Mary Susan Taylor 1979-9-28 Taylor 2199 Butte Butte County line at Hwy 70, between boundry and Arch Rock tunnel; granitic soils and dome outcrop. 488 Comment
  JEPS98522  Paspalum distichum Lowell Ahart 2000-10-2 8697 Butte Northwest of Parrott Landing, about 1 mile southeast of Ord Ferry, about 2 miles southeast of Ordbend, about 12 miles (air) soutwest of Chico. 32 Comment
  CHSC50021  Pectocarya penicillata Lowell Ahart 1990-3-28 6426 Butte In the borrow area, about 1/4 mile south of the Feather River, about 4/10 mile west of Pacific Heights Road, about 4 1/2 miles south-west of Oroville. 30 Comment
  UC1609216  Pectocarya penicillata Lowell Ahart 1993-4-8 6928 Butte 3.5 air mi s Thermalito (s of the Feather Rv, Oroville Wildlife Area); Oroville Wildlife Area 36 Comment
  CHSC2489  Pedicularis densiflora W. Fitzwater 1958-3-19 Butte Forest Ranch area ca. 15 mi. NE of Chico. Comment
  CHSC85396  Pedicularis densiflora John Dittes; Josephine Guardino 1992-5-7 483 Butte Cascade Range Foothills; ca. 5.1 air-miles northeast of Chico City Hall, ca. 1.3 air-miles east by southeast of Horseshoe Lake, ca. 1.2 air-mile west of Hwy 32; north of tributary of Dead Horse Slough, east of Canyon Oaks Golf Course. 176 Comment
  SEINET10529978  Pellaea Mary Susan Taylor 1983-1-17 Taylor 5217 A Butte T20N R4E ne sec 6. Vicinity of mouth of Flag Canyon. On top of North Table Mt., ca. 8 mi n of Oroville. Elevation ca. 1225 ft. 373 Comment
  SEINET10529804  Pellaea mucronata Mary Susan Taylor 1979-11-15 Taylor 2291 Butte Peter Ahart Ranch, Honcut. With Jim Jokerst & Lowell Ahart. 46 Comment
  SEINET10529809  Pellaea mucronata Mary Susan Taylor 1980-3-1 Taylor 2347 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
  SEINET11715828  Pellaea mucronata Unknown 1978-1 7 Butte ca 150 ft NW of Skyway Rd, ca 5 mi NE of bridge crossing Butte Creek between Chico & Paradise 244 Comment
  UC122749  Pellaea mucronata var. mucronata Mrs. R. M. Austin May 1879 83 Butte hills near Cold Canyon Comment
  CHSC44732  Penstemon azureus R. Banchero 1980-5-7 143 Butte Along Hwy 70, 2.4 mi S of its jct with the Feather River. 609 Comment
  NY91054  Penstemon corymbosus var. puberulentus H. M. Hall 1914-7-19 6763 Butte Richardson Springs near Chico. Upper Sonoran Zone. 152.4 Comment
  POM219483  Penstemon deustus subsp. deustus E. B. Copeland 1931-6-11 690 Butte Jonesville. 1600 Comment
  UCD124230  Penstemon heterophyllus Tracy I. Storer 1961-6-6 s.n. Butte State Highway 32, 13 miles east of Chico. 365 Comment
  CHSC63930  Penstemon heterophyllus var. purdyi Larry A. Stauffer 1990-4-22 28 Butte About 310 feet north-west of north end of Horseshoe Lake. Upper Bidwell Park, about 5 miles north-east of Chico, 0.5 mile east-north-east from park entrance. 76 Comment
  CHSC86545  Penstemon laetus var. leptosepalus L. P. Janeway; John Hunt 2003-6-13 7826 Butte Northern High Sierra Nevada. North side of South Fork Feather River arm of Lake Oroville, 140 m northwest of the north end of Enterprise Bridge. 287 Comment
  POM252808  Penstemon laetus var. leptosepalus A. A. Heller 1938-5-28 15123 Butte Along the Feather River Highway on roadside banks, 25 miles from Oroville. Comment
  UC103025  Penstemon laetus var. leptosepalus Mrs. R. M. Austin 1883-1 Butte Butte Co. Comment
  CHSC11884  Penstemon newberryi E. B. Copeland 1930-7-6 458 Butte Jonesville. 579 Comment
  CAS-BOT-BC245680  Penstemon newberryi var. newberryi A. A. Heller 1915-6-10 11958 Butte Little Summit in the Sierra Nevada 1371 Comment
  CAS-BOT-BC71551  Pentagramma pallida Lowell Ahart 1980-3-26 2057 Butte At bridge, Swedes Flat Road 320 Comment
  CHSC28417  Pentagramma triangularis subsp. semipallida Bruce Hamren 1978-4-24 8 Butte West Branch of Feather River. 280 Comment
  CHSC34242  Pentagramma triangularis subsp. semipallida M. S. Taylor 1981-5-7 3629 A Butte N side of Ponderosa Way, 0.6 mi n of Ponderosa Dam, ca. 4 air mi sw of Feather Falls. 365 Comment
  CHSC39317  Pentagramma triangularis subsp. semipallida Lowell Ahart 1983-6-26 Butte Along Ponderosa Way, about 1/8 mile east of the intersection of the Oroville Quincy Highway and Ponderosa Way, about 15 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 500 Comment
  CHSC83907  Pentagramma triangularis subsp. triangularis Lowell Ahart 2003-4-10 10075 Butte Below the basalt cliffs, on the east rim of South Table Mountain, about 2 1/2 miles (air) north of Oroville. 309 Comment
  JEPS106113  Pentagramma triangularis subsp. triangularis Lowell Ahart 2004-6-22 11119 Butte On the east side of Doe Mill Road, about 1/4 mile southeast of the bridge across Butte Creek, about 2 1/4 miles (air) southeast of Forest Ranch, about 5 miles (air) west of Stirling City 628 Comment
  UC106559  Perideridia bolanderi subsp. bolanderi Mrs. R. M. Austin 1896-7-4 256 Butte Colby Comment
  SEINET13095371  Perideridia bolanderi subsp. involucrata Unknown 1967-6-21 3778 Butte Road to Magalia 1.8 miles N of Pentz Store. 137 Comment
  CHSC40229  Perideridia kelloggii Vernon Oswald 1985-6-6 1815 Butte Humbug Rd. 0.9 mi n of Centerville Flume. 414 Comment
  JEPS12433  Perideridia kelloggii H. A. Dutton 1912-1 Butte e Chico; Hooker Oak Comment
  POM82580  Perideridia kelloggii C. C. Bruce 1897-06 2046 Butte Little Chico Comment
  SBBG120014  Perideridia lemmonii L. Ahart 2006-8-15 13176 Butte 0.75 mi (air) NW of Jonesville, about 5 mi (air) NE of Butte Meadows 1569 Comment
  SEINET13944984 Image available Perideridia oregana Lincoln Constance, Tsan Iang Chuang 1967-1 3777 Butte Feather River Highway 5.7 miles SE of Pentz Store, ca. 10 miles N or Oroville. Alt 500 ft 152 Comment
  HSC73010  Perideridia parishii subsp. latifolia M. S. Taylor, L. Ahart 1981-8-16 4204 Butte Jones Meadow, 3 mi. S of Philbrook Reservoir, 6 mi. NE of Stirling City 1829 Comment
  CHSC55252  Persicaria hydropiper Lowell Ahart 1991-9-14 6714 Butte On the sides of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. 45 Comment
  CHSC73980  Persicaria hydropiper B. Castro 1995-9-10 612 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, in meadow at the old Watson Cabin site, north of USFS Rd 21N25. In upper third of meadow. 1109 Comment
  CHSC1348  Persicaria maculosa D. Bower 1953-7-16 Butte 3A Llano Seco. 30 Comment
  CHSC38691  Persicaria maculosa Vernon Oswald 1983-5-8 452 Butte Upper Bidwell Park, Chico, at the s-w corner of the Omicron Plot ca. 500 ft e of the junction of Wildwood Ave. and Upper Park Rd. 85 Comment
  CHSC72252  Persicaria punctata Lowell Ahart 1998-9-11 8055 Butte Seep area west of the cattle chute on the west side of Cherokee Road, North Table Mountain, about 7 (air) miles north of Oroville. 403 Comment
  CHSC31563  Petrorhagia dubia L. Ahart 1974-4-11 376 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC134036  Phacelia cicutaria var. cicutaria M. S. Taylor; K. Tharp 1983-3-11 5228 Butte Along abandoned part of Hwy 162 which leads into water at n end of Bidwell Bar Bridge, ca. 6 air mi nne of Oroville Comment
  UC726927  Phacelia cicutaria var. cicutaria A. A. Heller 1942-4-26 16435 Butte steep slope...overlooking a deep gorge where the road begins to descend toward Oroville after leaving the...summit of Table Mountain Comment
  CHSC27560  Phacelia corymbosa Robert Schlising 1978-6-14 3292 Butte Magalia; serpentine outcrop between Magalia Res. and West Branch of Feather River; along dirt road leading from Coutelenc Road to the river. 670 Comment
  JEPS50781  Phacelia corymbosa Rimo Bacigalupi with Paul Hutchison and L. R. Heckard 1967-6-16 9281 Butte along Feather River Hwy (now CA 70) about 3 1/4 mi n Jarbo Gap 609 Comment
  CHSC118390  Phacelia egena Tim Kask 2015-2-18 225 Butte Antelope Creek, upstream from Fischer CG. 10T 0595755/4455054 Comment
  CHSC11969  Phacelia heterophylla subsp. virgata E. B. Copeland 1930-7-13 446 Butte Jonesville. 1550 Comment
  UC1602019  Phacelia heterophylla subsp. virgata C. G. Albertus 1933-7-1 38 Butte Promontory Point Chico Quadrangle (s slope) Comment
  SEINET8497834  Phacelia procera D. W. Taylor 2006-7-13 19566 Butte Sky High Mine, along Concow Road (watershed West Branch Feather River) 1737 Comment
  CHSC31000  Phacelia purpusii M. S. Taylor; R. S. Schlising 1980-7-6 3064 Butte On w side of Hwy 32, ca. 0.1 mi s of Loma, on rocky open edge of Yellow Pine Forest. 1127 Comment
  RSA21534  Phacelia purpusii Carl B. Wolf 1937-5-17 8720 Butte Northern Sierra Nevada. Road from De Sabla to Humboldt Road, 2.2 mi. W. of Big Butte Creek 762 Comment
  JEPS94650  Phalaris caroliniana Lowell Ahart 1998-6-9 7999 Butte about 7 air mi n Oroville (about 1/2 mi nw of the ione oak tree, nw of the cow chute along Cherokee Road); North Table Mountain 396 Comment
  CHSC58290  Phalaris lemmonii Lowell Ahart 1992-5-23 6775 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CAS-BOT-BC265953  Phalaris minor Lowell Ahart 1987-5-10 5609 Butte 1/8 mile south of Central House Road, east of the Western Pacific Railroad, about 1 1/2 miles north and 1 mile west of Honcut, about 12 miles south of Oroville 30 Comment
  CAS-BOT-BC265954  Phalaris minor Lowell Ahart 1981-5-16 2802 Butte Gray Lodge Waterfowl Management Area, 11 mi. SW of Gridley, Sierra Nevada 35 Comment
  CAS-BOT-BC250707  Phalaris paradoxa A. A. Heller 1914-5-13 11391 Butte Near Nelson Comment
  CHSC10829  Phalaris paradoxa Lowell Ahart 1968-5-8 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC58291  Phalaris paradoxa Lowell Ahart 1992-5-23 6776 Butte Rice field, on the north side of Biggs Princeton Road, about 2 miles west of Biggs. 30 Comment
  CHSC66101  Phalaris paradoxa Vernon H. Oswald 1996-5-23 7635 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. On the levee at the SW edge of Tract 9.2, Sanctuary I. 32 Comment
  POM356936  Phalaris paradoxa L. S. Rose 1937-6-11 37381 Butte 7 limes W. of Honcut 23 Comment
  SEINET10661955  Phalaris paradoxa Lowell Ahart 2005-5-28 Ahart 11828 Butte T21N, R3E, southwest 1/4 Section 25. On the north side of Falager Ct., south of the Durham Pentz Road, east of Highway 99 East, about 4 miles east of Durham. 70 Comment
  SEINET10854954  Phalaris paradoxa Lowell Ahart 1999-5-21 Ahart 8068 Butte T17N, R2E, southeast 1/4 Section 7. 50 yards north of Evans Reimer Road, about 7/8 mile east of Pennington Road, about 5 miles (air) southwest of Gridley. 21 Comment
  CAS-BOT-BC77375  Philadelphus lewisii Mrs. J. H. Morrison 1932-6-12 s.n. Butte Mountains above Durham Comment
  RSA754544  Philadelphus lewisii L. Ahart 2009-5-23 15723 Butte S side of Ten Mile House Road, Upper Bidwell Park, about 1/2 air mile SW of the intersection of Highway 32 and Ten Mile House Road, about 10 miles NE of Chico. 311 Comment
  SEINET10657620  Phleum pratense Mary Susan Taylor 1982-1 Taylor 4728 Butte T33N R5E nw1/4se1/4 sec 30. Pulga SW quad. Weedy around large landing on saddle of ridde se of Flea Mt, n of Pulga. ca. 5 air mi e of Magalia. With Malacothrix floccifera, Onobrychis, Madia, Rumex acteosella, Penstemon. 1097 Comment
  UC436290  Phlox diffusa E. B. Copeland Jul 1930 Butte above Jonesville 1900 Comment
  RSA104878  Phlox diffusa subsp. diffusa Elizabeth Sprague 1956-6-1 s.n. Butte 2 miles west of Butte Meadows Comment
  SEINET7073610  Phlox speciosa A. G. Vestal 1955-5-21 s.n. Butte About 13.8 miles east of Oroville on the Forbestown Road. UTM Zone 10, 643814mE, 4373382mN. Coordinate datum: NAD27. Comment
  POM225865  Phlox speciosa subsp. occidentalis J. H. Morrison 1932-5-30 s.n. Butte Durham. Comment
  CAS-BOT-BC134917  Phoradendron bolleanum C. R. Quick 1948-1-28 48 -02 Butte Magalia Comment
  CAS-BOT-BC134918  Phoradendron bolleanum C. R. Quick 1959-8-17 59 -45 Butte Magalia. Sierra Nevada Comment
  CAS-BOT-BC134920  Phoradendron bolleanum A. A. Heller 1918-5-5 13008 Butte Near Magalia 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
  CAS-BOT-BC141244  Phoradendron serotinum subsp. tomentosum M. S. Taylor 1981-1-5 3373 Butte ca. 100 ft E of Pentz-Magalia Hwy., ca. 1 mi S of Kunkle Reservoir, ca. 3 mi S of Paradise 411 Comment
  CHSC31465  Phoradendron villosum M. S. Taylor 1981-1-5 3373 Butte Ca. 100 ft e of Pentz-Magalia Hwy, ca. 1 mi s of Kunkle Reservoir, ca. 3 mi s of Paradise. 411 Comment
  CHSC104009  Photinia Lowell Ahart; Wes Dempsey, J. Guardino, S. Mason, S. Green 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
  CDA5820  Physalis lancifolia T. C. Fuller 1959-10-2 3158 Butte Rice Experiment Station, ca. 3 miles north of Biggs. 0 Comment
  RSA423763  Physalis lancifolia H. F. Copeland 1923-8-13 809 Butte Nelson. Comment
  CHSC87780  Physocarpus capitatus Paul Maslin 2004-5-6 32 Butte Sierra Nevada Range, west of Hwy 32 between Chico and Forest Ranch within Big Chico Creek Ecological Reserve (BCCER). On Big Chico Creek flood plain. UTM: 10609800E 4410330N. 243 Comment
  CHSC76344  Phytolacca americana L. P. Janeway 1999-7-12 6502 Butte Campus of California State University, Chico; north side of Big Chico Creek in weedy landscaping on the north side of Holt Hall. 59 Comment
  CAS-BOT-BC76940  Pilularia americana Lowell Ahart 1978-5-15 s.n. Butte Peter Ahart Ranch, Honcut 50 Comment
  CAS-BOT-BC76942  Pilularia americana Lowell Ahart 1983-5-12 3969 Butte About 1/2 mile north-east of Highway 99 & Pentz Road. 65 Comment
  CAS-BOT-BC78936  Pinus monticola A. A. Heller 1915-6-26 12033 Butte Summit of the Sierra Nevada above Jonesville 2133 Comment
  SEINET10530783  Pinus ponderosa Mary Susan Taylor 1980-5-27 Taylor 2702 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
  CHSC77414  Pinus sabiniana Laura Bogni 1997-3-25 6 Butte Magalia grove; west side of Coutelenc Rd.; 1 mi. due W of Sawmill Peak; 1/2 mi. SE of Magalia Reservoir. 701 Comment
  SFV10661  Pinus sabiniana M. L. Vincent 1964-4-9 529 Butte Paradise. Clark road, 1 mile south of Pearson Road. Comment
  SEINET10932762  Pinus sabiniana Mary Susan Taylor 1975-4-26 Taylor 527 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
  CHSC54458  Piperia colemanii Vernon H. Oswald 1991-7-15 4731 Butte Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just east of its juction with Oroville-Quincy Hwy, ca. 4.75 miles (air) northeast of Brush Creek. 1109 Comment
  UC600637  Piperia colemanii H. F. Copeland 1932-7-23 Butte above Jonesville hotel; Jonesville 1600 Comment
  CHSC88240  Piperia elongata Lowell Ahart 2004-7-11 11245 Butte Along the dirt road, 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
  CHSC96757  Piperia elongata Lowell Ahart 2007-5-29 13929 Butte On the east side of Bald Rock Dome, on the west side of the Dome Trail, trail leads to the Middle Fork of the Feather River, about 1 3/4 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 miles (air) northeast of Big Bald Rock, about 16 miles (air) northeast of Oroville. 585 Comment
  CAS-BOT-BC136586  Piperia michaelii Lowell Ahart 1980-5-12 2256 Butte Field redacted by CAS, contact the data manager for more information 50 Comment
  UC1586475  Piperia transversa Vernon H. Oswald and Lowell Ahart 1991-7-15 4732 Butte ca 4.75 mi (air) ne Brush Creek (Forest Rd 23N60 (Jordan Creek-Marble Creek Rd), just e of its junction with Oroville-Quincy Hwy) 1109 Comment
  JEPS95141  Piptatherum miliaceum Lowell Ahart 1997-5-18 7739 Butte Clear Creek, s of the hay barn, Butte Junior College Clear Creek; , Butte Junior College 76 Comment
  CHSC108965  Pistacia atlantica Lowell Ahart; Linnea Hanson, Susan Bazell, Josephine Guardino 2012-4-16 17862 Butte On the south side of Big Chico Creek, east of the Deer Pen, near Table 12, Lower Bidwell Park, Chico. 65 Comment
  CHSC109060  Pistacia chinensis Lowell Ahart; Linnea Hanson, Kaline Le Coq, Josephine Guardino 2012-4-27 17903 Butte On the north side of Big Chico Creek, south of the path, near the sign, southwest of the intersection of Vallombrosa Avenue and Manzanita Avenue, Lower Bidwell Park, Chico. 80 Comment
  CHSC27216  Pittosporum tenuifolium P. Moyer 1972-3-18 149 Butte CSUC Campus. Behind Adm. Bldg. 60 Comment
  CHSC100502  Pittosporum tobira Lowell Ahart; John Dittes, Josephine Guardino 2008-11-8 15421 Butte On the south side of Cedar Grove, Lower Bidwell Park, Chico. 67 Comment
  SEINET10966245  Pityrogramma triangularis Mary Susan Taylor 1981-3-31 Taylor 3464 Butte T22N R4E north border sec 2/1. Pulga SW quad. S side of Concow Rd, ca. 0.5 mi s of its jct with Ponderosa Way, ca. 20 air mi n of Oroville; 2800 ft. 853 Comment
  SEINET10529970  Pityrogramma triangularis var. semipallida Mary Susan Taylor 1980-4-16 Taylor 2483 Butte T21N R4E s sec 17 Cherokee quad. Lake Oroville State Recreation Area, up to 0.5 mi SE of Parish Camp, just S of Lime Saddle Memorial Park, ca. 5 mi S of Paradise; Foothill Woodland. 305 Comment
  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
  CHSC92567  Plagiobothrys austiniae L. P. Janeway 2005-3-10 8355 Butte Cascade Range Foothills. East edge of city of Chico; north side of Humboldt Road 1.8 km northeast of Bruce Road. 134 Comment
  JEPS21222  Plagiobothrys canescens A. A. Heller 1914-3-26 11226 Butte Canyon of Big Chico Creek Comment
  JEPS117196  Plagiobothrys fulvus Lowell Ahart 2010-5-16 16684 Butte About 1/4 mile south of the parking area, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 371 Comment
  CHSC44478  Plagiobothrys fulvus var. campestris Lowell Ahart 1988-5-12 5993 Butte Pasture field, about 1/2 mile north-east of the Honcut Cemetery, Joie Osgood Ranch, about 3 1/2 miles east and 1 1/2 miles north of Honcut. 60 Comment
  SEINET12326939  Plagiobothrys fulvus var. campestris Unknown 1982-1 17 Butte on banks of Singer Ck, ca 1 mi W of Hwy 99 off Haille Rd, ca 12 mi N of Chico 61 Comment
  SEINET6973518  Plagiobothrys fulvus var. campestris Lewis S. Rose 1931-4-12 s.n. Butte Sacramento Valleys and its bordering foothills. Comment
  SEINET10497372  Plagiobothrys glyptocarpus Mary Susan Taylor 1975-4-26 Taylor 515 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
  CHSC29254  Plagiobothrys greenei M. S. Taylor 1975-4-29 541 Butte In fields ca. 100 yds s of Pentz Rd., ca. 1/4 mi e of Hwy 99, ca. 15 mi s of Chico. 60 Comment
  JEPS127064  Plagiobothrys nothofulvus Lowell Ahart 2016-5-14 20829 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11miles (air) southeast of Oroville. Comment
  CHSC118549  Plagiobothrys scriptus Lowell Ahart 2017-2-27 21383 Butte Along a poor road, open pasture field, Peter Ahart Ranch, about 2 miles north and 1 1/4 miles east of Honcut, about 12 miles southeast of Oroville. 33 Comment
  CHSC27058  Plagiobothrys shastensis Lowell Ahart 1978-5-1 1698 Butte Peter Ahart Ranch, Honcut. In a farmed field. 50 Comment
  CHSC35068  Plagiobothrys shastensis R. A. Schlising 1981-4-6 4018 Butte W of Oroville and SW of Thermalito, at S border of Oroville Municipal Airport; off Larkin Road, 1.2 mi S of jct with Hwy 162. Comment
  UC625531  Plagiobothrys shastensis Frank W. Gould 1938-4-23 314 Butte in rocky pastureland two mi n Chico 60 Comment
  CHSC48002  Plagiobothrys stipitatus Vernon Oswald 1983-5-6 434 Butte Nord-Cana Hwy. 0.5 mi n of Bennett Rd. Along the edge of a vernal pond. Comment
  POM71619  Plagiobothrys stipitatus C. C. Bruce 1898-03 2417 Butte Sloughs. [No further location information.] Comment
  CDA5729  Plagiobothrys stipitatus var. micranthus L. Ahart 2005-5-11 11807 Butte About 1 mile south of Beatson Hollow, about 1 1/2 miles southwest of the poor dirt road off of Cherokee Road, south part of North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC116703  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2016-5-14 20830 Butte About 100 yards north of the waterhole, Peter Ahart Ranch, about 1 3/4 miles north and 2 3/4 miles east of Honcut, about 11 miles (air) southeast of Oroville. 38 Comment
  CHSC65896  Plagiobothrys stipitatus var. micranthus Vernon H. Oswald 1996-4-20 7407 Butte Sacramento Valley. Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In formerly irrigated pasture in the S end of the S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC87206  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10730 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville. 69 Comment
  JEPS105901  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2004-4-10 10731 Butte Road gutter on the north side of Highway 149, about 1 mile northwest of the intersection of Highway 149 and Highway 70, about 6 miles (air) northwest of Oroville 69 Comment
  JEPS117192  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 16832 Butte Large vernal pool, 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
  OBI20602  Plagiobothrys stipitatus var. micranthus Carl B. Wolf 1937-5-14 8674 Butte Sacramento Valley, 5 mi NW of Chico on Hamilton City Rd 46 Comment
  RSA475191  Plagiobothrys stipitatus var. micranthus Aaron Liston, S. Meury 1988-5-28 743 -3 Butte 15 km (air) SE of Chico. 1/4 mi. S of Pentz Rd., 1/8 mi. E of Hwy 99 55 Comment
  SEINET10781221  Plagiobothrys stipitatus var. micranthus Lowell Ahart 2010-6-20 Ahart 16819 Butte T18N, R4E, southeast 1/4 Section 21. Large size plants, on dry red rocky clay soil, bottom of Wyandotte Creek, under the government pole line, about 100 yards south of the pole, about one mile east of Palermo Honcut Highway, Guidci Ranch, about 7 miles (air) southeast of Oroville. Foothill Woodland. 48 Comment
  CHSC75257  Plagiobothrys stipitatus var. stipitatus Jennifer Slater 1997-4-6 2 Butte At the Wurlitzer addition of the Vina Plains Preserve, approx. one mile west of Highway 99. 67 Comment
  CHSC115211  Plagiobothrys tenellus Lowell Ahart 2015-4-27 20079 Butte Between the road and the stream, about 5 yards north of the dirt road, about 5/8 mile northwest of the iorn gate aling Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. 304 Comment
  CHSC33687  Plagiobothrys tenellus L. Ahart 1981-3-29 2710 Butte Along edge of Ponderosa Way near the Ponderosa Dam, near Forbestown. 350 Comment
  RSA63834  Plagiobothrys tenellus A. A. Heller, H. E. Brown 1902-5-9 5509 Butte Berry Canyon (near Clear Creek) from type region Comment
  UCD115085  Planodes virginica William Anderson 1965-3-23 s.n. Butte Gray Lodge Field Station, California Deparment of Fish and Game FEP. Comment
  CHSC30056  Plantago bigelovii Thomas E. Lewis 1978-4-5 11 Butte S side of Pentz-Durham Rd, ca. 1 km w of Butte College. 80 Comment
  CHSC31782  Plantago bigelovii L. Ahart 1974-3-24 336 Butte Peter Ahart Ranch, Honcut. 45 Comment
  SEINET10499843  Plantago bigelovii Mary Susan Taylor 1976-3-23 Taylor 1031 Butte Abundant in vernal pool, SW corner of junction of Broyles Road and Hwy 99, ca. 11 mi N of Chico. 61 Comment
  HSC86822  Plantago coronopus Lisa Sedlacek 1978-4-18 15 Butte 25 yds. down from junction Hwy. 99 and Broyles Rd., NW corner of Butte County 61 Comment
  JEPS98424  Plantago coronopus Lowell Ahart 2000-5-13 8347 Butte 5 air mi SW of Oroville (edge of a poor dirt rd, S side of the access rd to boat ramp at the Thermolito Afterbay, W of Larkin Road, 1 1/4 mi S of the Oroville Airport) 42 Comment
  SEINET10499852  Plantago erecta Mary Susan Taylor 1980-3-1 Taylor 2353 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
  SEINET8246451  Plantago erecta George Kingston 1980-3-5 6 Butte ne of Horseshoe Lake in Bidwell Park, Chico. 152 Comment
  JEPS113684  Plantago lanceolata Lowell Ahart 2007-7-27 14393 Butte On the south strand of the Thermalito Afterbay, about 200 yards north of Highway 162, about 5 miles west of the intersection of Highway 162 and Highway 70, about 5 1/2 miles (air) west of Oroville 36 Comment
  CHSC113501  Platanthera dilatata var. leucostachys Lowell Ahart 2014-7-13 19644 Butte West part of a large wet meadow (some bog), about 100 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  SEINET10470060  Platanthera dilatata var. leucostachys Mary Susan Taylor 1980-1 Butte Comment
  CHSC35652  Platystemon californicus R. E. Preston 1982-4-7 236 Butte Ca. 10 ft above high water mark, w branch Feather River arm of Lake Oroville, ca. 1 mi. n of Nelson Bar launch ramp, ca 4 mi sw of Paradise. 304 Comment
  UC1303143  Platystemon californicus A. A. Heller 1928-4-21 14529 Butte on the road to golf links near Chico (near Sandy Gulch); near Sandy Gulch Comment
  CHSC29232  Plectritis congesta M. S. Taylor 1980-4-1 2428 Butte On bluffs above Covered Bridge, ca. 100 ft s of Butte Creek, ca. 6 mi e of Chico 182 Comment
  CHSC24979  Plectritis macrocera J. Cox 1976-3-10 39 Butte N. Table Mt. ca. 300 yds. n of Cherokee Rd., 4.3 mi. ne of Oroville. 426 Comment
  CAS-BOT-BC244402  Poa annua Javier Penalosa 1962-6-18 2462 A Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC38842  Poa annua Vernon Oswald 1983-2-14 75 Butte Upper Bidwell Park, Chico, in Parking Area K at Bare Hole (1 mi e of the power lines). 109 Comment
  CHSC47626  Poa annua Lowell Ahart 1977-4-2 1236 Butte In a pasture field, Peter Ahart Ranch, about 1 1/2 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 39 Comment
  CHSC96379  Poa annua Lowell Ahart 2007-3-19 13594 Butte Peter Ahart Ranch, about 1 3/4 miles north and 1 1/4 miles east of Honcut, about 12 miles south of Oroville. 35 Comment
  CHSC99319  Poa annua Lowell Ahart 2008-5-21 14775 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
  RSA774133  Poa bolanderi L. Ahart 2010-9-21 17198 Butte About 50 yards east of the poor dirt road, abut 100 yards west of Big Kimshew Creek, about 1.5 air miles NE of Jones Meadow, about 2.5 air miles SE of Philbrook Reservoir 1918 Comment
  CHSC59055  Poa compressa Lowell Ahart 1992-8-2 6897 Butte Along Concow Creek, in Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  UC1594562  Poa cusickii subsp. epilis Lowell Ahart 1992-7-26 6862 Butte ca 2 air mi se Snow Mt (ca 1/4 mi ne of Carr Mine) 1798 Comment
  UC1609012  Poa howellii Lowell Ahart 1993-6-26 7030 Butte ca 1 air mi nw Lost Creek Reservoir Dam (Mooreville Ridge); Jackass Flat 1158 Comment
  CDA19116  Poa pratensis H. D. Riley 2001-5-2 PDR 1170767 Butte Sacramento Valley; In residential lawn, on 1419 Muir Ave., Chico. 0 Comment
  CHSC71216  Poa pratensis subsp. pratensis Lowell Ahart 1998-6-9 7986 Butte Seep, southwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 403 Comment
  CHSC11975  Poa pringlei E. B. Copeland 1931-6-22 606 Butte Jonesville, at 'the summit. 2000 Comment
  UC1562449  Poa secunda subsp. secunda Lowell Ahart 1990-4-28 6471 Butte ca 3 1/2 mi sw Oroville (s side of Pacific Heights Rd) 39 Comment
  SEINET10508319  Poa tenerrima Mary Susan Taylor 1980-3-15 Taylor 2382 Butte T21N R2E nw sec 36. In Valley Grassland ca. 1/4 mi S of Pentz Road, ca. 1/8 mi E of Hwy 99, ca. 15 mi S of Chico; near large vernal pool. 55 Comment
  CHSC772  Pogogyne douglasii D. Bower 1953-7-16 Butte 4A Llano Seco. 30 Comment
  UCSB63721  Pogogyne ziziphoroides Watega, Jerry 1986-5-15 Butte ca.. 50 ft w of Hwy. 99; 9-5 mi n of Chico 54 Comment
  CHSC67524  Pogogyne zizyphoroides James D. Jokerst 1992-4-14 Butte Stone Ridge Ranch (Jon Bechtel property) E of Cohasset Hwy. and Chico Municipal Airport. Comment
  UC196327  Pogogyne zizyphoroides A. A. Heller 1914-4-11 11275 Butte 8 miles north Oroville Comment
  UC187622  Pogogyne zizyphoroides Mrs. R. M. Austin May 1883 270 Butte Adobe Flats Comment
  SEINET10841183  Poinciana gilliesii Mary Susan Taylor Taylor 778 Butte Weedy or cultivated plants of Chico. 61 Comment
  SEINET10871961  Polanisia trachysperma Mary Susan Taylor 1977-8-16 Taylor 1437 Butte Abundant in Valley Grassland, near cul vert in natural drainage, ca. 1.2 mi E of junction of Pentz Road and Hwy 99, ca. 15 mi S of Chico. 61 Comment
  CHSC37555  Polygala cornuta T. B. Devine 1977-7-24 437 Butte Beside Humbug Road near P.G. and E. ditch about 3/4 mi N of DeSabla. 853 Comment
  CAS-BOT-BC167555  Polygala cornuta var. cornuta Lowell Ahart 1983-6-21 4095 Butte Along Bloomer Hill Road, about 1 1/4 miles west of the Oroville Quincy Highway, about 15 miles north-east of Oroville 450 Comment
  RSA107421  Polygala cornuta var. cornuta L. S. Rose 1955-6-15 55102 Butte 6 miles SE of Paradise on Pentz Rd. 427 Comment
  CHSC28569  Polygonum aviculare M. S. Taylor; J. D. Jokerst 1979-11-11 2281 Butte Scattered on edge of ricefield. Ca. 6 mi s of Chico, on w side of Goospeed-Watt Rd. 33 Comment
  CHSC43265  Polygonum aviculare Lowell Ahart 1987-9-24 5893 Butte On a gravel bar along the North Fork of the Feather River, near the Poe Power House, about 2 miles southeast of Jarbo Gap. 271 Comment
  RSA4213  Polygonum bistortoides E. B. Copeland 1929-7-20 357 Butte Jonesville. 1550 Comment
  CHSC45376  Polygonum bolanderi Vernon Oswald 1986-7-21 2212 Butte Little Butte Creek Canyon overlook on Skyway 2.6 mi sw of Neal Rd. 335 Comment
  UC1561016  Polygonum bolanderi Dean W. Taylor 1988-8-12 10048 Butte road to Butte Meadows 3.2 mi ne Highway 32 1341 Comment
  JEPS117539  Polygonum californicum Lowell Ahart 2010-6-9 16782 Butte About 50 yards south of the poor dirt road, about 120 yards east of the fence, about 170 yards east of where you park, southeast of Cherokee Road, North Table Mountain, about 4 1/2 miles (air) northeast of Oroville 393 Comment
  SEINET10479642  Polygonum davisiae Mary Susan Taylor 1978-7-18 Taylor 1705 A Butte On top of Humboldt Peak, at Humboldt Summit, on Butte-Tehama County line. 2159 Comment
  CHSC11918  Polygonum douglasii subsp. douglasii E. B. Copeland 1930-7-24 630 Butte Jonesville. 1500 Comment
  CHSC31167  Polygonum douglasii subsp. douglasii M. S. Taylor 1978-9-9 1916 Butte On w side of Bull Run Rd, ca. 11 mi s of Butte Meadows. 1463 Comment
  HSC100820  Polygonum lapathifolium Lowell Ahart 2011-8-17 17628 Butte ~10 yd. N of the trail, N of the crossing and on the E side of Big Chico Creek, ~50 yd. W of Ten Mile House Rd., Upper Bidwell Park, 3/4 (air) mi. W of Hwy. 32, 10 mi. NE of Chico. 204 Comment
  JEPS95934  Polygonum lapathifolium Lowell Ahart 1999-8-13 8174 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
  CAS-BOT-BC419812  Polygonum parryi Lowell Ahart 1988-6-15 6041 Butte North of Forbestown Road, about 100 meters east of the intersection of Black Bart Road and Forbestown Road, about 1 mile west of Robinson Mill Road 670 Comment
  CHSC63717  Polygonum parryi Lowell Ahart 1994-10-9 7555 Butte In a small grassy opening, on the north side of Forbestown road, about 150 yards east of the intersection of Black Bart Road and Forbestown Road, about 3 (air) miles west of Forbestown. 609 Comment
  RSA31978  Polygonum phytolaccifolium A. A. Heller 1938-7-20 15278 Butte [Unspecified] 1524 Comment
  SEINET10479671  Polygonum phytolaccifolium Lowell Ahart, Peter Ahart 1985-7-9 Ahart 5118 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
  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
  RSA105841  Polygonum spergulariiforme C. C. Bruce 1897-05 1984 Butte Iron Canyon Comment
  CAS-BOT-BC71867  Polypodium californicum Lowell Ahart 1980-3-26 2065 Butte Near Hurleton 600 Comment
  SEINET10530411  Polypodium californicum Mary Susan Taylor 1980-3-19 Taylor 2394 Butte T19N R6E sw sec 8. Macabes Creek Canyon ca. 100 ft E of Lumpkin Rd, ca. 2.5 mi N of its jct with Forbestown Road, ca. 18 mi NE of Oroville. Cool, wet Ripar ian Woodland. 396 Comment
  HSC103916  Polypodium calirhiza L. Ahart 2012-2-22 17740 Butte About 9 mi. (air) NE of Chico; east edge of Big Chico Creek, ~100 yds. S of trail crossing creek, ~100 yds W of Ten Mile House Road; ~.75 mi. W of Hwy. 32 190 Comment
  UC474205  Polypodium calirhiza H. F. Copeland 1918-2-3 Butte near Chico (Iron Canyon) Comment
  CDA14059  Polypodium glycyrrhiza G. F. Hrusa, T. D. Wilfred 1997-5-1 13706 Butte Sierra Nevada; NE side of upper end of Paradise Lake, where last tributaries from E enter. Comment
  UCD51660  Polypogon interruptus R. N. Raynor 1940-4-19 s.n. Butte Gridley. Comment
  CHSC38852  Polypogon maritimus Vernon Oswald 1983-5-22 523 Butte Upper Bidwell Park, Chico, on the n side of Horseshoe Lake. 100 Comment
  CHSC45745  Polypogon maritimus S. A. Conley 1986-6-23 42 Butte Upper Bidwell Park, Chico. In drainage of Gun Club lake, ca. 150 ft. s. of lake. Comment
  CHSC23408  Polystichum imbricans M. S. Taylor 1976-3-6 1013 Butte At Macabes Creek, ca. 100 yds e of Lumpkin Rd, ca. 1 mi ne of Forbestown Rd, ca. 12 mi e of Oroville. 1066 Comment
  CHSC37828  Polystichum imbricans R. A. Schlising 1980-6-10 3679 Butte NW part of county along Humboldt Road, 1.9 mi NE of jct with Hwy 32 at Lomo. 1341 Comment
  CHSC44607  Polystichum imbricans Vernon Oswald 1982-11-14 15 Butte Near Doon Campground, ca. 1 mi e of Lovelock (Skyway between Paradise and Stirling City). 853 Comment
  SEINET10530114  Polystichum imbricans Mary Susan Taylor 1981-4-14 Taylor 3530 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
  UC123294  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin July, 1896 251 Butte Colby Comment
  UC123295  Polystichum imbricans subsp. imbricans Mrs. R. M. Austin May, 1896 198 Butte Forest Ranch Comment
  UCD136541  Polystichum munitum Lowell Ahart 1981-11-8 3231 Butte Near the Golden Trout Crossing. 800 Comment
  UC1100071  Potamogeton nodosus Herbert L. Mason 1947-7-10 12640 Butte Sanford Slough, sw corner of Butte County Sanford Slough; , Butte Sink Comment
  UCD138255  Potamogeton nodosus H. L. Mason; Verne Grant 1945-7-10 12640 Butte Stanford Slough, Butte Sink, southwest corner of county. Comment
  CHSC45610  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  CHSC45611  Potentilla glandulosa subsp. glandulosa L. P. Janeway 1987-6-5 2138 Butte Along French Cr Rd 5.0 mi from OroQuincy Hwy and Stanwood Saddle. Edge of road. 701 Comment
  UC481580  Potentilla norvegica H. F. Copeland 1928-8-22 1066 Butte Jonesville 1524 Comment
  CHSC46315  Poteridium annuum Vernon Oswald 1989-6-8 3804 Butte Concow Rd at Flea Valley. On the edge of a meadow. 1118 Comment
  CHSC31760  Proboscidea louisianica Lowell Ahart 1974-9-8 632 Butte Peter Ahart Ranch, Honcut, in barnyard. 45 Comment
  CDA6517  Proboscidea louisianica T. C. Fuller, W. T. Parsons 1960-7-25 4865 Butte Highway 99E, ca. 9 miles northwest of Chico. 0 Comment
  CHSC13708  Proboscidea lutea M. S. Taylor; K. Stern 1974-10-11 328 Butte Scarce in weed field ca. 50 yds e of River Rd, opposite washout on Sacramento River, ca. 10 mi w of Chico. Comment
  CHSC31761  Proboscidea lutea L. Ahart 1973-7-19 262 Butte Peter Ahart Ranch, Honcut. 45 Comment
  UCSC000640  Prunella vulgaris subsp. lanceolata Kate Conger 1907-1 s.n. Butte Brush Creek Comment
  CHSC43835  Prunella vulgaris var. lanceolata L. P. Janeway 1987-6-19 2226 Butte Along Sly Cr where rd from Challenge-LaPorte Rd rd to SE side of Sly Cr Reservoir crosses; 2.1 mi from the Challenge-LaPorte Rd. 1097 Comment
  CAS-BOT-BC159827  Prunus avium C. R. Quick 1953-8-11 53 -125 Butte Rag Dump Meadow se. of Stirling City Comment
  CAS-BOT-BC159925  Prunus emarginata H. F. Copeland 1928-8-18 125 Butte Neighborhood of Jonesville Comment
  SD2306  Prunus emarginata E. B. Copeland 1931-7-28 Butte On ridge west of North Willow Creek, in chaparral. Jonesville 1650 Comment
  UCD113181  Prunus emarginata H. F. Copeland 1928-8-18 s.n. Butte Jonesville. Comment
  CHSC37501  Pseudognaphalium beneolens J. D. Jokerst; L. Ahart, M. S. Taylor 1983-1-17 1686 Butte Table Mountain. At the north edge of the mesa. Top of North Table Mt. Comment
  CHSC28388  Pseudognaphalium thermale J. D. Jokerst 1979-10-13 387 Butte Jordan Hill Rd., 2.4 mi. N. of Concow Cr. 609 Comment
  CHSC28534  Pseudognaphalium thermale M. S. Taylor 1979-10-5 2233 Butte Paradise Lake, se side, ca. 1/2 mi n of Coutolenc Rd, ca. 5 mi n of Magalia. 731 Comment
  CHSC24462  Pseudotsuga menziesii var. menziesii M. S. Taylor 1976-2-22 1000 Butte Ca. 2 mi n of Cohasset, ca. 10 ft e of Cohasset Hwy. Comment
  CHSC82223  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2002-4-14 9487 Butte Area between the Railroad and the Midway Road, 50 yards north of Nelson Dlavo Road, in Nelson. 36 Comment
  JEPS117188  Psilocarphus brevissimus var. brevissimus Lowell Ahart 2010-5-14 16649 Butte On the west side of the old Humboldt Road, Disc Golf Area, about 150 yards west of the entrance to the Disc Golf Area, about 40 yards west of Highway 32, Upper Bidwell Park, about 5 miles (air) northeast of Chico 395 Comment
  CAS-BOT-BC361917  Psilocarphus tenellus Lowell Ahart 1983-8-16 4304 Butte Near Bull Hill Road, about 3 miles south of Butte Meadows 1600 Comment
  CAS-BOT-BC361918  Psilocarphus tenellus Lowell Ahart 1979-5-11 s.n. Butte Peter Ahart Ranch. Honcut 50 Comment
  CAS-BOT-BC361920  Psilocarphus tenellus A. A. Heller; H. E. Brown 1902-5-12 5536 Butte Grade between Clear Creek and Paradise Comment
  SEINET10474855  Psilocarphus tenellus Lowell Ahart, Peter Ahart 1983-6-12 Ahart 4042 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
  CHSC88079  Ptelea crenulata R. D. Fischer 2004-5-2 164 Butte Sierra Nevada foothills within upper Bidwell Park in Chico on the east-side addition along Hwy. 32. Located along Annie Bidwell Trail between old cabin site (picnic table) and the open grassland of the Big Chico Creek canyon bluffs. 403 Comment
  CHSC34152  Pteridium aquilinum var. pubescens L. Ahart 1981-9-15 3163 Butte N of Pinkard Creek, ca. 1 1/4 mi n of Lost Creek Reservoir, ca. 1 1/4 mi w of Sly Creek Reservoir. 396 Comment
  RSA105838  Pterostegia drymarioides R. M. Austin 1883-05 27 Butte Chico Creek Comment
  CHSC44111  Purshia tridentata L. P. Janeway; R. A. Schlising 1988-7-22 3041 Butte Saddle between Coon Hollow and Chips Cr, Slope on Chips Cr side. 1905 Comment
  CHSC52065  Pycnanthemum californicum B. Castro 1988-6-5 260 Butte Upper Little Chico Ck Cyn. 243 Comment
  UC1586496  Pyrola asarifolia Vernon H. Oswald and Lowell Ahart 1991-8-19 4835 Butte North side of Forest RD 25N15, between Philbrook Reservoir and Coon Hollow 1767 Comment
  CHSC51870  Pyrola dentata L. P. Janeway 1988-7-2 2971 Butte At Coyote Gap. 1280 Comment
  CHSC51871  Pyrola picta L. P. Janeway 1987-6-26 2299 Butte At Rag Dump. 1173 Comment
  SEINET10449203  Pyrola picta f. aphylla Mary Susan Taylor 1980-7-6 Taylor 3070 Butte T26N R3E ne sec 24, Butte Meadows quad; on both sides of Hwy 32, ca. 1 mi N of Soda Springs. With R.A. Schlising. 1280 Comment
  CHSC5960  Quercus M. MacArthur 1968-6-17 195 Butte Half way between Big Chico Creek and SW entrance of LS bld., Chico State College campus. 60 Comment
  CHSC109088  Quercus X morehus Lowell Ahart 2012-4-20 17894 Butte On the north side of the drainage, about 100 yards west of the intersection of Ten Mile House Road and South Rim Trail, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico. 259 Comment
  UCSB1123  Quercus berberidifolia Copeland, H. 1939-7-8 Butte Humboldt Road 12 miles east of Chico Comment
  CHSC39794  Quercus chrysolepis Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  UC1135411  Quercus chrysolepis J. E. Sowder 1933-8-4 122 Butte slope above de Sable Power House; Chico Quad. 609 Comment
  CHSC3160  Quercus kelloggii Dona Kingsford 1966-4-23 Butte 11.1 miles SW of Hooker Oak Tree. Chico. Comment
  CHSC39783  Quercus kelloggii Eloise Gallatin 1935-5-19 Butte Feather River Canyon. Comment
  SEINET10431579  Quercus kelloggii M. J. Williams 1967-4-22 s.n. Butte Near Feather Falls. 457 Comment
  CAS-BOT-BC61579  Quercus lobata C. Hart Merriam 1919-11-21 s.n. Butte Chico Comment
  CHSC30864  Quercus lobata J. D. Jokerst 1979-4-2 1176 Butte Table Mt. East edge of mt, immediately S of Cherokee Rd. 396 Comment
  JEPS113214  Quercus lobata Lowell Ahart 2007-3-28 13601 Butte West of North Honcut Creek, about 2 1/2 miles north and 2 2/3 miles east of Honcut, about 12 miles southeast of Oroville 51 Comment
  UCR219104  Quercus lobata George K. Helmkamp, E. A. Helmkamp 2009-9-5 15593 Butte Sacramento Valley, Palermo Road 0.3 mi. east of its junction with CA-70, 6.1 mi. ENE (76 deg. ) of Biggs 58 Comment
  UC1135809  Quercus vacciniifolia P. L. Johannsen 1936-7-21 961 Butte 1.5 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quad. 1645 Comment
  UCD47472  Quercus vacciniifolia J. I. Mallory 1970-8-20 379 Butte 3/4 mile north of Ramsey Bar, ca. 10 miles northeast of Stirling City, Butte County, California. 1402 Comment
  SEINET13954004 Image available Quercus vacciniifolia A. A. Heller 1915-1 11957 Butte Little Summit in the Sierra Nevada, in the yellow pine belt, elevation about 4500 feet, on open gravelly slopes about rocks in granite. 1372 Comment
  CAS-BOT-BC104690  Quercus wislizeni A. A. Heller 1913-3-2 10689 Butte Hills two miles N of Oroville 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
  UC1562480  Ranunculus alismifolius var. alismifolius Vernon Oswald and Lowell Ahart 1990-5-29 4268 Butte e side of Humbug Rd ca 3.5 air mi ese Jonesville; Butte Creek House Meadow 1777 Comment
  CHSC48698  Ranunculus aquatilis var. aquatilis Vernon Oswald 1987-8-10 3205 Butte Cluster of 3 snow lakes ca. 3 mi (air) s of Humbug Summit, 0.5 mi w of the Butte-Plumas county line, ca. 5.5 mi (air) se of Jonesville. At the edge of the largest lake. 1935 Comment
  CHSC4566  Ranunculus aquatilis var. capillaceus C. Glascock 1965-1-27 202 Butte In water. Near w boundary of Cuager property, 2723 Oro-Quincy Hwy, Oroville. Comment
  CHSC46842  Ranunculus aquatilis var. hispidulus L. V. Ritter 1969-5-5 259 Butte E shoe of Horseshoe Lake, Bidwell Park. Comment
  CHSC52819  Ranunculus arvensis R. A. Schlising; F. J. Fuller 1982-5-2 4238 Butte N of Oroville, ne Table Mt., and s of Cherokee, off Cherokee Road. Roadside ditch. 426 Comment
  CDA3502  Ranunculus arvensis Sterling O. Mattoon 1971-4-24 Butte State Highway 32, 6.9 miles east of Chico. 0 Comment
  CHSC52789  Ranunculus canus Vernon Oswald 1983-2-9 65 Butte Upper Bidwell Park, Chico, on the north slope n-w of Horseshoe Lake. 115 Comment
  CHSC23895  Ranunculus canus var. canus R. W. Conover 1975-4-18 1 Butte Cole Canyon area of Table Mtn., ca. 6 mi nw of Oroville, along creek 60 yds w of waterfall. 381 Comment
  SEINET10833574  Ranunculus flammula var. filiformis Mary Susan Taylor, Lowell Ahart 1981-8-15 Taylor 4188 Butte T26N R5E ne 1/4 ne 1/4 sec. 30. Jones- ville SW quad. N end of Snag Lake (dry this year), dry clay soil, Yellow Pine Forest and Montane Meadow, E side of Humbug Rd. ca. 14 mi NE of Stirling City. 5700 ft. 1737 Comment
  CHSC52821  Ranunculus flammula var. ovalis Kirsten Tarp 1981-7-19 37 Butte N part of county at s end of Crane Valley; in meadow. 1584 Comment
  RSA718079  Ranunculus occidentalis var. ultramontanus L. Ahart 2006-7-16 12997 Butte NW edge of Willow Creek, 3/4 airmile NW of Jonesville, 5 airmiles NE of Butte Meadows. 1516 Comment
  SEINET10940374  Raphanus sativus Mary Susan Taylor Taylor 775 Butte Weedy or cultivated plants of Chico. 61 Comment
  SEINET10493567  Rhamnus Mary Susan Taylor, Vernon H. Oswald 1985-5-30 Taylor 5513 Butte Trees Road between Hwy 70 and Coyote Gap, ca. 25 air mi NE of Oroville. Yellow Pine Forest. Comment
  SEINET13946269 Image available Rhamnus californica Lewis S. Rose 1955-1 55097 Butte Magalia; 2400 ft alt. 732 Comment
  CAS-BOT-BC59879  Rhamnus ilicifolia Paul Leskinen 1972-4-16 785 Butte NE. fork of Wofford. 1219 Comment
  UC1093997  Rhamnus tomentella subsp. tomentella Lewis S. Rose 1955-6-14 55097 Butte Magalia 731 Comment
  CDA14157  Rhododendron occidentale G. F. Hrusa 1997-6-27 13912 Butte Sierra Nevada; Banks of Fall River (not Shasta Co. Fall R.) at old Fall River Campground on USFS 24N94. Comment
  CHSC46015  Rhododendron occidentale Lowell Ahart 1979-4-28 1849 Butte North Honcut Creek, Peter Ahart Ranch, about 1 mile north and 3 miles east of Honcut, about 12 miles south of Oroville. 45 Comment
  CHSC48377  Rhododendron occidentale Vernon H. Oswald 1983-7-15 872 Butte Doon Camp on s side of Skyway, about ca. 1 mi e of Lovelock. 853 Comment
  JEPS98684  Rhynchospora californica Lowell Ahart 2000-6-21 8499 Butte In a small seep, south of Parking Area P, north of Salmon Hole, Upper Bidwell Park, about 3 1/3 miles (air) northeast of Manzanita Avenue, Chico. 106 Comment
  CHSC78318  Rhynchospora capitellata Lowell Ahart 2000-6-27 8532 Butte Seeps on bare granite, on the north side of Bean Creek Road, about 1/4 mile southeast of Little Bald Rock, about 4 miles (air) northeast of Madrone Lake, about 13 miles (air) northeast of Oroville. 1066 Comment
  LA205411  Ribes cereum E. B. Copeland; 1931-6-11 sn Butte Kirby's Meadow, Jonesville 1800.0 Comment
  CHSC1659  Ribes nevadense L. Stone 1930-3-10 Butte Big Chico Creek Canyon near Forest Ranch. 548 Comment
  UC176366  Ribes nevadense A. A. Heller 1913-6-7 10823 Butte near Stirling; West Branch of the North Fork of the Feather River 914 Comment
  UCD102477  Ribes roezlii M. Vincent 1964-4-10 559 Butte Hwy. 32. 10 miles NE of Chico. Comment
  CAS-BOT-BC198961  Ribes roezlii var. roezlii A. A. Heller 1939-4-26 15384 Butte Edge of thickets near the river at the foot of the grade leading down from Stirling City Comment
  CHSC31812  Robinia pseudoacacia L. Ahart 1975-5-3 748 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CAS-BOT-BC74467  Rorippa curvisiliqua A. A. Heller 1914-5-30 11469 Butte Sacramento Valley about 6 miles northwest of Chico. Chico-Hamilton road 6 miles from Chico. Comment
  UCD115309  Rorippa curvisiliqua R. E. Preston 1996-4-30 931 Butte 4.5 miles north of Hamilton City, on gravel bar on the east side of the Sacramento River. 44 Comment
  JEPS110370  Rorippa curvisiliqua var. occidentalis Lowell Ahart 2006-6-18 12795 Butte Peter Ahart Ranch, about 2 miles north and 1/2 mile east of Honcut, about 12 miles south of Oroville. In a rice field 31 Comment
  CHSC21145  Rorippa curvisiliqua var. orientalis M. S. Taylor 1975-4-26 533 Butte On e side of Kunkle Reservoir, ca. 500 yds e of Pentz-Magalia Hwy, ca. 1 mi s of Paradise. Comment
  CHSC10759  Rorippa nasturtium-aquaticum Lowell Ahart 1966-5-7 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC110994  Rosa Lowell Ahart 2012-6-9 18181 Butte On the south side of the pond, east of the South Rim Trail, at the old homestead, about 100 yards south of Ten Mile House Road, about 5/8 mile west of Highway 32, about 9 miles (air) northeast of Chico, south part of Upper Bidwell Park. 250 Comment
  SEINET10483877  Rosa Mary Susan Taylor 1979-10-12 Taylor 2240 Butte T23N R2E sec 25. Riparian Woodland, Big Chico Creek, at end of Upper Bidwell Park Road, ca. 10 mi NE of Chico. 244 Comment
  CHSC116498  Rosa californica Lowell Ahart; Susan Kephart, Jim Kephart 2015-6-4 20196 Butte Day Meadow, about 100 yards south of the poor dirt road, about 3/4 mile southeast of the intersection of Weiss Road and Forbestown Road, about 2 mile (air) southwest of Forbestown. 829 Comment
  SEINET10904100  Rosa californica Mary Susan Taylor 1980-5-24 Taylor 2747 Butte Peter Ahart Ranch, Honcut. 50 Comment
  RSA718379  Rosa gymnocarpa L. Ahart 2006-6-24 12856 Butte On the W side of the dirt road (Ponderosa Way) at an intersection, a gated road goes NW, on Cohasset Ridge, about 3.75 miles (air) NE of Cohasset. 1128 Comment
  CHSC1590  Rosa pisocarpa subsp. ahartii A. Goekler 1928-5-25 Butte Bidwell Park. 121 Comment
  CAS-BOT-BC156609  Rubus bifrons Javier Penalosa 1962-6-18 2455 Butte Near confluence of French and Peavine Creeks 609 Comment
  CHSC37063  Rubus discolor L. Ahart 1982-9-29 3835 Butte Along edge of rd and near Pinkard Creek, ca. 1/10 mi n of Lost Creek Reservoir Dam, ca. 2.1 mi nw of Strawberry Valley. 1100 Comment
  CHSC42006  Rubus laciniatus Lowell Ahart 1975-9-4 976 Butte Along a dirt road, about 2 miles north of Feather Falls. 548 Comment
  JEPS98693  Rubus laciniatus Lowell Ahart 2000-7-11 8574 Butte On the north side of Lumpkin Ridge Road, upper west branch of Know-nothing Creek, about 1 mile southwest of the intersection of Lumpkin Ridge Road, road to Fall River, and the County Road, about 4 miles (air) northeast of Feather Falls. 1219 Comment
  CAS-BOT-BC147204  Rubus parviflorus Lowell Ahart 1984-6-10 4695 Butte Along the road about 2 miles south-west of the Forbestown Diversion Dam, north-east of Forbestown 700 Comment
  UCR66527  Rubus parviflorus H. F. Copeland 1930-8-26 1328 Butte Jonesville, in woods above hotel 1677 Comment
  SEINET10483593  Rubus parviflorus Mary Susan Taylor 1976-5-5 Taylor 1112 Butte Abundant along creek, ca. 5 ft S of Hwy 70, ca. 20 mi NE of Oroville; granitic soils. Comment
  CHSC48873  Rubus ursinus Vernon Oswald 1983-4-10 319 Butte Upper Bidwell Park, Chico, at Bare Hole. Along Chico Creek. 109 Comment
  UCD89071  Rubus ursinus Lindsay Clark 2008-5-30 BWP 22 Butte Bidwell Park in Chico, along Yahi trail between parking lots G and H (Alligator Hole and Day Camp). 89 Comment
  CHSC42496  Rumex acetosella Lowell Ahart 1987-6-9 5742 Butte 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
  JEPS124099  Rumex conglomeratus Lowell Ahart 2015-6-6 20204 Butte About 5/8 mile northwest of the iron gate along Cherokee Road, Beatson Hollow, North Table Mountain, about 7 miles (air) north of Oroville. Comment
  CHSC64050  Rumex crispus S. C. Morey 1983-8-4 710 Butte On e side of Scout Rd., ca. 1 mi n of its jct with Humboldt Rd. at Butte Meadows. 1292 Comment
  SEINET10838759  Rumex crispus Mary Susan Taylor 1975-8-31 Taylor 876 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC103146  Rumex dentatus Lowell Ahart 2009-7-4 15998 Butte On the west side of the gravel road, about 100 yards south of parking lot 3, Gray Lodge Waterflowl Management Area, about 6 miles (air) southwest of Gridley. 21 Comment
  UC204569  Rumex salicifolius var. transitorius A. A. Heller 1914-5-13 11396 Butte between Durham and Nelson (along Butte Creek); Butte Creek 53 Comment
  CHSC116639  Sagina decumbens subsp. occidentalis Lowell Ahart 2016-4-15 20746 Butte On both sides of Swedes Flat Road, about 1/2 mile southwest of Dutch Ravine, about 8 miles (air) southeast of Oroville. 384 Comment
  CAS-BOT-BC445782  Sagittaria longiloba Carl Wick 1988-6-17 s.n. Butte South of Grainland Road, west of Agua Fria Road (Goodspeed Watt Road), south of Dayton 39 Comment
  UCD150366  Sagittaria montevidensis subsp. calycina William Anderson 1964-8-15 s.n. Butte Richvale-Oroville Rd. Comment
  UCD138067  Sagittaria sanfordii J. Jones 1924-11-20 s.n. Butte Biggs. Comment
  CAS-BOT-BC129903  Salix bonplandiana A. A. Heller 1913-4-4 10694 Butte Levee at Oroville Comment
  CHSC117750  Salix exigua Lowell Ahart 2016-10-25 21375 Butte On the west side of a ditch, about 50 yards south of the Little Pump, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 30 Comment
  CHSC111971  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the north side of the creek, on the bottom of Beatson Hollow, about 1 mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. 280 Comment
  JEPS119882  Salix exigua var. hindsiana Lowell Ahart 2012-6-5 18170 Butte On the bottom of Beatson Hollow, about 1mile northwest of the iron gate on the north side of Cherokee Road, North Table Mountain, about 6 miles (air) north of Oroville. Comment
  CAS-BOT-BC107833  Salix gooddingii Gordon H. True 1971-4-8 6454 Butte Gray Lodge Wildlife Area, Valley Grassland, 7 miles southwest of Gridley 24 Comment
  CHSC103000  Salix gooddingii Lowell Ahart 2009-6-3 15827 Butte Meadow, about 50 yards southeast of the gate, about 40 yards east of Ten Mile House Road, Upper Bidwell Park, about 3/4 mile (air) wast of Highway 32, about 10 Miles northeast of Chico. 257 Comment
  JEPS119578  Salix gooddingii Lowell Ahart 2012-4-17 17872 Butte About 100 yards south of where the road turns north, about 1/2 mile west of Pacific Heights Road, Oroville Wildlife Area, about 5 miles (air) southwest of Oroville. Comment
  CAS-BOT-BC104079  Salix hindsiana A. A. Heller 1915-5-16 11870 Butte Chico-Centerville road 3 miles from Chico Comment
  RSA0118770  Salix laevigata Lowell A. Ahart 2013-4-20 18552 Butte In Wilson Creek, about 100 yards southwest of the oak trees, about 0.5 mile north of the barn, about 3/4 mile north of the Honcut Cemetary, about 3.75 miles (air) northeast of Honcot. 50 Comment
  UC456789  Salix laevigata E. B. Copeland 1931-5-8 Butte 5-mile dam Chico Comment
  CAS-BOT-BC125180  Salix lasiandra var. lasiandra A. A. Heller 1919-5-17 13160 Butte Banks of the Feather River near Stirling Comment
  CAS-BOT-BC106985  Salix lasiolepis Lowell Ahart 1987-4-30 5490 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
  CHSC1622  Salix lasiolepis V. Holt 1958-2-17 Butte Along Sandy Gulch near Chico. 60 Comment
  CHSC32614  Salix lasiolepis J. D. Jokerst 1979-2-23 1134 A Butte Top of North Table Mt., W edge of mountain at the top of the S fork of Coal Cr Canyon. 365 Comment
  JEPS119607  Salix lasiolepis Lowell Ahart 2012-4-9 17831 Butte West of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  CAS-BOT-BC129487  Salix melanopsis Dr. E. B. Copeland 1903-5-28 3278 Butte Chico, on banks of Butte Creek Comment
  CAS-BOT-BC129488  Salix melanopsis Dr. E. B. Copeland 1903-7-27 3491 Butte Chico, on banks of Butte Creek Comment
  CHSC38665  Salix melanopsis Vernon Oswald 1983-5-22 526 Butte Upper Bidwell Park, Chico, in the bed of Lindo Channel between Five Mile Recreation Area and the flood-control gates. 79 Comment
  CHSC42771  Salix melanopsis Lowell Ahart 1987-8-8 5855 Butte North Honcut Creek, about 2 miles north and 3 miles east of Honcut, about 12 miles south-east of Oroville. 67 Comment
  CHSC9692  Salix melanopsis E. L. Smith 1971-9-12 1064 Butte On Big Chico Creek at Bidwell Park in Chico. Comment
  UC478536  Salix melanopsis E. B. Copeland 1931-6-10 622 Butte in meadows by Butte Creek Jonesville; Butte Creek 1500 Comment
  UC104508  Salvia sonomensis Mrs. Austin Jun 1896 213 Butte Forest Ranch Comment
  CHSC102792  Sambucus mexicana Lowell Ahart 2009-5-30 15807 Butte On the east side of Guardians Trail, about 50 yards northeast of Pine Trail, Upper Bidwell Park, about 3/8 mile (air) southwest of the intersection of Highway 32 and Ten Mile House Road, about 10 miles northeast of Chico. 411 Comment
  CAS-BOT-BC238622  Sambucus nigra subsp. caerulea A. A. Heller 1914-4-27 11326 Butte 8 miles north of Oroville Comment
  CHSC39236  Sanicula bipinnata M. S. Taylor; K. Tharp 1983-3-12 5234 Butte Along small rd off Stillson Canyon Rd (leading to Mannion property), ca. 3 mi sse of Chico. 152 Comment
  CHSC45733  Sanicula bipinnata J. S. Peterich 1988-3-8 7 Butte On Cohassset rd. ca. 70 m. w. of entrance to Richardson Springs, Chico. 90 Comment
  SFV11651  Sanicula bipinnata M. L. Vincent 1964-4-9 534 Butte 1.5 miles south of Pearson Road on Clark Road. Comment
  SEINET10454570  Sanicula bipinnatifida Mary Susan Taylor 1976-3-30 Taylor 1038 Butte Ca. 15-50 ft E of Cherokee Rd, ca. 1 mi S of Cherokee, on N side of Table Mt; with Mimulus tricolor. 305 Comment
  SEINET12121650  Sanicula bipinnatifida L. Ahart, Ahart, P. 1984-1 4715 Butte about 2 mi SW of Forbestown Diversion Dam, NE of Forbestown 700 Comment
  UCD127941  Sanicula bipinnatifida R. R. Kehlor 1951-3-10 11 Butte J.M. Kehlor Ranch, 6.25 miles east of Oroville. Sierra Nevada. 48 Comment
  CHSC70778  Sanicula graveolens B. Castro 1995-5-18 569 Butte Ca 2 air mi N of Feather Falls, towards western end of Watson Ridge, on S side of USFS Rd 21N25. On dirt berm 15-20 ft S of road edge. 1094 Comment
  CHSC82482  Sanicula graveolens Lowell Ahart; John Dittes, Josephine Guardino 2002-6-21 9733 Butte On the sides 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
  CHSC7052  Sanicula tuberosa F. Kimball 1969-4-15 43 Butte 100 yds. w of Foster Rd., 1.5 mi s of Skyway. Paradise. 396 Comment
  JEPS98668  Sanicula tuberosa O. Gomez and P. Vargas 1996-5-27 41 PV96 Butte Feather Falls, ca. 0.5 mi from the parking lot by the trail to the Falls Comment
  SEINET10454585  Sanicula tuberosa Mary Susan Taylor 1978-7-19 Taylor 1775 A 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
  SEINET10454587  Sanicula tuberosa Mary Susan Taylor 1981-3-16 Taylor 3414 A 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
  SEINET10972971  Sanicula tuberosa Mary Susan Taylor 1981-3-31 Taylor 3455 Butte T22N R4E ne sec 12. Pulga SW quad. N side of spur rd 1/4 mi w of its jct with Ponderosa Way (Rim Rd), ca. 5 air mi n of its jct with Hwy 70 at Jarbo Gap, 18 air mi ne of Oroville; 2600 ft. 792 Comment
  UC566791  Sanicula tuberosa Herbert L. Mason 1927-5-11 3727 Butte vicinity of Dobbins 457 Comment
  UCD128033  Sanicula tuberosa L. Ahart 1973-3-24 180 Butte Along Swedes Flat Road, north of Bangor. 152 Comment
  CHSC96827  Saponaria officinalis Lowell Ahart 2007-5-29 13933 Butte On the east side of Bald Rock Dome, gravel bar along the Middle Fork of the Feather River, about 2 miles by the trail from the trail head which is 3/10 mile east of Bean Creek Road, about 2 1/2 miles (air) northeast of Big Bald Rock, about 16 1/2 miles (air) northeast of Oroville. 608 Comment
  CAS-BOT-BC466195  Sarcodes sanguinea John Copeland 1931-7-1 671 Butte Jonesville 1550 Comment
  CAS-BOT-BC436856  Saxifraga Lowell Ahart 1975-4-2 s.n. Butte Peter Ahart Ranch, Honcut 45 Comment
  CHSC1672  Saxifraga californica D. Stover 1929-3-15 Butte Bidwell Park. 91 Comment
  UC600618  Saxifraga odontoloma E. B. Copeland 1931-7-20 Butte Jonesville Comment
  CHSC100974  Scandix pecten-veneris L. P. Janeway 2008-3-18 9234 Butte Cascade Range Foothills. East edge of City of Chico; south side of Humboldt Road 1.3 km northeast of Bruce Road. 123 Comment
  SEINET10454697  Scandix pecten-veneris Lowell Ahart 1985-4-1 Ahart 4875 Butte Along Table Mountain Boulevard, near the Cambell Overflow, a little south of the inter- section of Highway 70 and 149, about 7 miles north of Oroville. Comment
  CHSC36302  Schoenoplectus acutus var. occidentalis M. S. Taylor; L. Ahart, J. Jokerst 1982-4-28 4367 Butte Graylodge Waterfowl Refuge, s side of lot 1, ca. 1/2 mi ne of HQ, ca. 12 mi sw of Gridley. 19 Comment
  POM277045  Schoenoplectus mucronatus M. K. Bellue 1947-8-28 s.n. Butte Afton Road, northeast of Biggs Comment
  CHSC43291  Schoenoplectus tabernaemontani Lowell Ahart 1987-9-24 5898 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap. 271 Comment
  CHSC45186  Scirpus congdonii Lowell Ahart 1984-7-19 4754 Butte Bog like meadow, about 1/2 mile east of Bald Mountain, about 5 air miles north-east of Stirling City. 1905 Comment
  JEPS122026  Scirpus congdonii Lowell Ahart 2014-7-2 19542 Butte On the north 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. Comment
  SD448  Scirpus congdonii E. B. Copeland 1929-7-19 Butte Jonesville, in sunny bog, surrounded by Pinus murrayana. 1550 Comment
  CAS-BOT-BC123993  Scirpus diffusus E. B. Copeland 1929-7-19 343 Butte Jonesville 1550 Comment
  CHSC56807  Scirpus diffusus L. P. Janeway; R. A. Schlising 1988-8-2 3149 Butte Ca 1 1/2 air mi northwest of Butte Meadows; along Cascade Creek ca 1/4 upstream of the Soda Springs Campground. 1143 Comment
  RSA719172  Scirpus diffusus L. Ahart 2006-7-25 13062 Butte About 20 yards east of the poor dirt road, about 100 yards south of the cabin, about 3/4 mile (air) northwest of Jonesville, about 5 miles (air) northeast of Butte Meadows. 1570 Comment
  SEINET10466960  Scirpus tuberosus Lowell Ahart 1991-9-14 Ahart 6720 Butte On the drying margin of a large reservoir, Joie Osgood Ranch, about 2 miles east of Honcut. Valley Grassland. T17N R4E S/C/S14. 46 Comment
  CHSC50319  Scleranthus annuus subsp. annuus Vernon Oswald; Lowell Ahart 1990-5-29 4265 Butte North side of Humboldt Rd just west of Scout Rd, Butte Meadows. 1316 Comment
  CHSC19935  Scrophularia californica subsp. floribunda M. S. Taylor 1975-2-16 372 Butte Ca. 1.4 mi w of Pentz-Magalia Hwy, ca. 5 mi s of Paradise, in vicinity of Lime Saddle Reservoir. Comment
  POM42817  Scrophularia californica subsp. floribunda C. C. Bruce 1897-05 1973 Butte Little Chico. Comment
  CHSC63645  Scutellaria siphocampyloides B. Castro; L. Hanson, R. Zebell 1989-5-30 313 Butte Ca 2 air mi SSW of the Ponderosa Reservoir on Lake Oroville, on Ponderosa Way (USFS Rd 20N24) ca 0.3 mi N of its jcn with Lower Forbestown Rd. 768 Comment
  CHSC85424  Scutellaria siphocampyloides John Dittes 1992-5-5 469 Butte Sierra Nevada Range Foothills; ca. 2.6 air-miles southeast of Paradise Civic Center, ca. 1.8 air-miles west of West Branch Feather River, ca. 1.3 air-mile northwest of Kunkle Reservoir; slope above tributary drainage of Dry Creek, south of terminus of Libby Road. 445 Comment
  CHSC4640  Scutellaria tuberosa R. Carter 1966-4-28 376 Butte Found in Feather R. Canyon ca. 7 mi. N of Jarbo Gap at intersection of Hwy. 70 and 23N28; ca. 100 yds. up 23N28 on W side of road. 640 Comment
  CHSC457  Sedella pumila R. Carter 1964-3-23 63 Butte 5 mi. E of Chico Rd. on Cherokee Rd. ca. 250 yds. E of rd. along rim of table. 60 Comment
  SD8318  Sedella pumila R. M. Austin 1883-1 Butte Comment
  CHSC33872  Sedum albomarginatum M. S. Taylor 1981-5-11 3687 Butte N side of Feather River Hwy 70, at jct with Pulga ... Field redacted by CHSC, contact the data manager for more information 487 Comment
  CAS-BOT-BC59130  Sedum spathulifolium Ira L. Wiggins; Dorothy B. Wiggins 1961-6-10 16313 Butte SE slope near PG&E Reservoir, Feather River Canyon. Comment
  CAS-BOT-BC62124  Selaginella hansenii A. A. Heller 1913-4-6 10715 Butte Hills near Big Chico Creek, east of Chico Comment
  CHSC100794  Selaginella wallacei Lowell Ahart; John Dittes, Steve Green 2009-1-17 15473 Butte Large rock on the south side of Guardian Rock Trail, about 20 yards west of the intersection of Humboldt Trail and Guardian Rock Trail, Upper Bidwell Park. 321 Comment
  CAS-BOT-BC69726  Selaginella wallacei Lowell Ahart 1979-4-3 s.n. Butte Near N. Honcut Creek, Peter Ahart Ranch, Honcut. 50 Comment
  SEINET10839468  Selaginella wallacei Lawrence P. Janeway 1984-10-7 Janeway 1178 Butte Brush Creek quad T21N R6E SE 1/4 of sec. 30, 3200 feet. 975 Comment
  CAS-BOT-BC363285  Senecio aronicoides Mrs. J. H. Morrison 1932-5-30 s.n. Butte Durham Comment
  SEINET10474903  Senecio aronicoides Mary Susan Taylor 1978-7-19 Taylor 1781 Butte On E side of Upper Scotts John Road, ca. 2 mi N of its junction with Scotts John Road, ca. 6 mi NE of Jonesville. 1890 Comment
  CHSC86443  Senecio eurycephalus var. lewisrosei Jenny Marr 1993-7-1 95 Butte Located in Northern Sierra Nevada, between Concow and Pulga, on a serpentine outcrop belonging to LNF. Site approx. 4 air miles NE of Concow Reservoir. 1105 Comment
  RSA0001555  Senecio lewisrosei L. S. Rose 1939-6-7 39247 Butte North Fork of Feather River. 3 mi S of Pulga. 610 Comment
  JEPS119617  Senecio sylvaticus Lowell Ahart 2012-4-9 17832 Butte In Big Chico Creek, west of South Rim Trail, south part of Upper Bidwell Park, about 2 miles (air) northeast of Chico. Comment
  UCD146245  Senecio sylvaticus Daniel S. Park; D. Potter, J. J. Petersen 2010-4-10 14 Butte Table Mt. near creek. 335 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
  CHSC95998  Setaria parviflora L. P. Janeway 2006-7-19 8820 Butte Sacramento Valley. Shallow arm of Thermalito Afterbay, 150 m east of Wilber Road, 2.1 km south of Hwy 162. 41 Comment
  CAS-BOT-BC240121  Setaria pumila John Thomas Howell 1961-9-22 36735 Butte Bank of Feather River, Oroville 53 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
  CHSC28614  Setaria pumila M. S. Taylor 1979-10-3 2221 Butte Near creek, Butte Creek canyon, ca. 1/4 mi upstream from bridge crossing Butte Creek at Helltown Rd, ca. 7 mi ne of Covered Bridge. 243 Comment
  SEINET10500670  Sherardia arvensis Mary Susan Taylor 1979-3-31 Taylor 1975 Butte Junction of Pentz-Magalia Hwy and Pentz Road, ca. 1/4 mi W of Hwy 70, ca. 22 mi N of Oroville; Valley Grassland. 198 Comment
  CHSC24146  Sidalcea calycosa B. Bunge 1976-4-12 9 Butte Growing 25 yd. nw of intersection of Notre Dame Blvd. and Skyway, Chico. 67 Comment
  SEINET10480000  Sidalcea calycosa Mary Susan Taylor 1984-4-6 Taylor 5404 Butte T22N R4E nw sec 3l. Ca. 0.5 mi N of Kunkle Reservoir, on E side of Pentz-Magalia Hwy, ca. 3 mi S of Paradise. Comment
  POM84398  Sidalcea diploscypha C. C. Bruce 1897-05 1921 Butte Chico. Comment
  CHSC41889  Sidalcea gigantea Lowell Ahart 1986-8-15 5386 Butte Along a small stream, along the dirt road, about 1/2 mile south-west of Bald Mountain, about 4 1/2 miles northeast of Stirling City. 1615 Comment
  CHSC61324  Sidalcea gigantea Lowell Ahart 1993-7-22 7083 Butte On gravel bar along Fall River, west of the bridge across Fall River, about 6 (air) miles north-east of Feather Falls. 1036 Comment
  CHSC34957  Sidalcea glaucescens R. Schlising; R. Banchero 1980-8-1 3960 Butte E of Philbrook Lake, 4.3 mi E of Skyway. Comment
  UC1124956  Sidalcea glaucescens P. L. Johannsen 1936-7-21 958 Butte 1 1/2 mi ese Chaparral House; Lassen National Forest, Paynes Creek Quadrangle Comment
  CHSC52445  Sidalcea hartwegii Molly Henry 1981-4-10 7 Butte 1 mi E of Chico, 100 yds W of hwy 32. 100 Comment
  SFV2294  Sidalcea hartwegii M. L. Vincent 1962-4-17 199 A Butte Sierra Nevada 4 miles south of Paradise at Kunkel Reservoir. 450 Comment
  UC398675  Sidalcea hartwegii A. A. Heller 1927-5-7 14366 Butte along Little Chico Creek (in the gravelly bed of Little Chico Creek); along Little Chico Creek Comment
  HSC85970  Sidalcea hirsuta J. Hunter 1986-4-12 45 Butte Vacant lot in Chico, 75 m NW of the intersection of East Ave. and Ceanothus 62 Comment
  SEINET10937542  Sidalcea malviflora subsp. asprella Mary Susan Taylor 1982-8-16 Taylor 4996 Butte T24N R4E se/se sec 11. Pulga NW quad. At seep and creek crossing rd to Bald Mt, ca. 1/4 mi sw of Bald Mt, ca. 3 mi ne of Stirling City. Mixed Evergreen Forest; 5400 ft. 1646 Comment
  CHSC34947  Sidalcea oregana subsp. spicata R. Schlising; R. Banchero 1980-8-1 3958 Butte Near east end of Philbrook Lake. Comment
  CHSC34950  Sidalcea oregana subsp. spicata R. A. Schlising; M. S. Taylor 1980-7-5 3835 Butte NE of Butte Meadows at first crossing of Butte Creek on Humboldt Road. 1341 Comment
  CHSC34951  Sidalcea oregana subsp. spicata R. A. Schlising; R. Banchero 1980-7-14 3900 Butte N end of Snag Lake in north of county. 1731 Comment
  CAS-BOT-BC213186  Sidalcea robusta E. B. Copeland 1899-4-1 s.n. Butte Chico Comment
  CHSC99019  Silene antirrhina Lowell Ahart 2008-5-21 14773 Butte Dry bare granite soil, below the high water line of Lake Oroville, on the north and south side of the South Fork of the Feather River, where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile northwest of the Ponderosa Dam. 246 Comment
  CHSC212  Silene bridgesii V. Holt 1931-6-3 Butte Forest Ranch. 548 Comment
  CHSC32726  Silene laciniata subsp. californica M. S. Taylor 1981-4-8 3495 Butte Embankment at end of Dark Canyon Rd around the turnout near the restroom up from the boat ramp to West Branch Feather River, ca. 3.5 mi s of its jct with Big Bend Rds jct, ca. 5 air mi s of Jarbo Gap on Hwy 70. 304 Comment
  CAS-BOT-BC389292  Silene lemmonii H. F. Copeland 1920-8-2 196 Butte Jonesville 1219 Comment
  SD1632  Silene lemmonii E. B. Copeland 1929-7-15 Butte Jonesville. Comment
  JEPS98990  Sinapis alba Lowell Ahart 2001-4-15 8723 Butte On the north side of the dirt road east of the large pump, on the south side of Evans-Reimer road, about 1 mile east of Pennington road, Gray Lodge Waterfowl Management Area, about 4 miles (air) SW of Gridley. 22 Comment
  CDA31956  Sisymbrium officinale L. Ahart 2009-5-8 15656 Butte On the south side of the gravel road, about 10 yards east of Cedar Grove Parking Area in Lower Bidwell Park, Chico. Comment
  SEINET10472650  Smilacina racemosa var. amplexicaulis Mary Susan Taylor 1979-7-21 Taylor 2152 Butte Humboldt Peak, at Humboldt Summit, tallest point in the county, on Butte- Tehama County line. 2155 Comment
  POM109243  Smilax californica Mrs. R. M. Austin 1883-05 31 Butte Lomo. Comment
  CHSC1934  Solanum americanum V. Holt 1931-6-1 Butte Along Chico Creek near campus. 57 Comment
  CHSC76422  Solanum americanum Lowell Ahart 1999-10-28 8319 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
  CHSC76963  Solanum parishii Ida Ryan 1893-5-1 Butte Little Chico Creek. Comment
  SEINET7274373 Image available Solanum parishii S. Jones 29 Butte ca. 0.25 mi E of jct of Stilson Canyn Rd. and Bruce Rd.; Butte County Comment
  CHSC117132  Solanum rostratum Herman Gray 2016-6-20 Butte Mid Sacramento Valley. Growing in lawn at 21723 Shoshone Ave., Chico. 57 Comment
  CHSC43779  Solanum rostratum Vernon Oswald 1986-7-23 2223 Butte Hamilton-Nord-Cana Hwy 0.5 mi n of Bennett Rd. Roadside on the edge of vernal pond. 48 Comment
  CAS-BOT-BC157461  Solanum umbelliferum M. S. Taylor 1982-5-2 4383 Butte Along Truex Rd, ca. 1/2 mi w of its jct with Hwy 70, ca. 5 mi n of Oroville 365 Comment
  CAS-BOT-BC365382  Solidago elongata A. A. Heller 1914-7-23 11611 Butte Sierra Nevada at Chico Meadows 1219 Comment
  CAS-BOT-BC364940  Solidago velutina subsp. californica Lowell Ahart 1977-11-15 s.n. Butte Peter Ahart Ranch, Honcut. Near North Honcut Creek 50 Comment
  CHSC39344  Solidago velutina subsp. californica Lowell Ahart 1983-6-26 4148 Butte Along Ponderosa Way, about 1 mile south-east of the East Fork of Canyon Creek, about 14 miles north-east of Oroville. Note: the sign gives Big Ridge Road instead of Ponderosa Way. 575 Comment
  CHSC71163  Soliva sessilis Lowell Ahart 1998-6-9 8005 Butte In the tracks of a dirt road, about 5/8 mile northwest of the lone oak tree, northwest of the cow chute along Cherokee Road, North Table Mountain, about 7 miles (air) north of Oroville. 396 Comment
  CAS-BOT-BC365983  Sonchus asper Lowell Ahart 1987-7-17 5829 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  CHSC66155  Sonchus asper subsp. asper Vernon H. Oswald; Lowell Ahart 1996-5-27 7669 Butte Sacramento River National Wildlife Refuge, Llano Seco Unit. U.S. Fish and Wildlife Service parcel between 7 Mile Lane and the Sacramento River. In pasture in S paddock of Tract 7, Sanctuary II. 32 Comment
  CHSC114962  Sonchus oleraceus Lowell Ahart 2015-1-27 19923 Butte Along the west side of Virginia Street, northwest of the intersection of Hazel Street and Virginia Sreet, Gridley. 29 Comment
  CDA13256  Sorbus scopulina var. cascadensis G. F. Hrusa, T. D. Wilfred 1996-7-9 13107 Butte Plumas National Forest; Drainage of Jordan Creek, S of Hwy 162 near Roger's Cow Camp. Comment
  CAS-BOT-BC236539  Sorghum halepense John Thomas Howell 1975-6-15 51065 Butte Waste ground, Chico 60 Comment
  SEINET10933086  Sparganium emersum var. multipedunculatum Mary Susan Taylor, Lowell Ahart 1981-8-16 Taylor 4195 A 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
  CAS-BOT-BC389945  Spergula arvensis Lowell Ahart 1990-1-17 6406 Butte East of the Enterprise Boat Launch Area, about 1/8 mile north-west of the Enterprise Bridge across Lake Oroville 289 Comment
  CHSC103974  Spergularia bocconi Lowell Ahart 2010-5-7 16610 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
  CHSC106882  Spergularia bocconi Lowell Ahart 2011-5-1 17339 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
  CHSC38304  Spergularia bocconi Vernon Oswald 1983-5-2 414 Butte Upper Bidwell Park, Chico, in Parking Area A at the w end of Upper Park Rd. 83 Comment
  CHSC45898  Spergularia bocconi Lowell Ahart 1974-6-9 478 Butte Near roads, Peter Ahart Ranch, about 1 1/2 miles north and 1 mile east of Honcut, about 12 miles south of Oroville. 36 Comment
  CAS-BOT-BC390128  Spergularia bocconi Lowell Ahart 1989-5-23 6244 Butte Along the edges of Avocado Road, about 1/2 mile west of the Oroville Bangor Highway, about 1 mile north-west of Bangor 213 Comment
  CHSC112244  Spergularia rubra Lowell Ahart 2013-4-29 18657 Butte In corral at the barn, about 1/4 mile north of the Honcut Cemetary, about 3 1/4 miles (air) northeast of Honcut. 47 Comment
  CAS-BOT-BC390600  Spergularia rubra Lowell Ahart 1987-5-6 5518 Butte Along the North Fork of the Feather River, near the Poe Power House, about 2 miles south-east of Jarbo Gap 271 Comment
  POM193364  Sphenosciadium capitellatum E. B. Copeland 1930-8-4 430 Butte Jonesville. 1500 Comment
  CHSC44426  Spiraea douglasii Lowell Ahart 1988-6-29 6114 Butte Along Rockefeller Road, about 1/2 mile south of the Rockefeller School, about 2 1/2 miles south-west of Big Bald Rock. 762 Comment
  UCSB63841  Spiraea douglasii Ahart, Lowell 1997-8-1 Butte Little Kimshew Creek, in Snow Meadow, about 1/4 mile east of Table Mountain; about 8 miles (air) northeast of Stirling City; Lodgepole Pine in a meadow in Red Fir Forest 1524 Comment
  CHSC49684  Spiranthes porrifolia Vernon Oswald 1987-7-29 3158 Butte South side of Humbug Rd. just e of Chaparral Guard Station, ca. 1.5 mi (air) wnw of Philbrook Reservoir. 1554 Comment
  UC392228  Spiranthes stellata E. B. Copeland 1929-7-28 Butte Jonesville; in swamp 1550 Comment
  CHSC21133  Stachys ajugoides var. rigida M. S. Taylor 1975-8-31 879 Butte On Earnies Island in Butte Creek, ca. 50 ft s of Humboldt Rd, ca. 1/2 mi e of Butte Meadows. 1341 Comment
  CHSC43639  Stachys ajugoides var. rigida B. Castro 1987-8-25 204 Butte On gravel bars of Butte Ck ca 1/4 mi e of Hwy 99 crossing, ca 2.1 mi s of Skyway in Chico. 60 Comment
  CHSC44404  Stachys ajugoides var. rigida Lowell Ahart 1988-6-21 6046 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. 271 Comment
  CHSC52205  Stachys ajugoides var. rigida L. P. Janeway 1988-7-2 2957 Butte Along road to Coyote Gap 2.6 mi from bridge on French Cr. 982 Comment
  SEINET10498820  Stachys palustris subsp. pilosa Lowell Ahart, Peter Ahart 1983-7-29 Ahart 4217 Butte T21N R5E nw sec 31. Ca. 2.5 mi w on Bloomer Hill Rd from Oroville-Quincy Hwy, ca. 13 mi n of Oroville. Foothill Woodland; 500 m. 500 Comment
  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
  UC2055631  Stachys pycnantha C. Epling, Mrs. Epling Aug 1, 1935-Aug 15, 1935 Butte Bidwell Park. Comment
  UC2055630  Stachys pycnantha O. H. Kappler 1949-7-28 Butte North Fork, Feather River, Route 24. Comment
  SEINET10969018  Stachys rigida Mary Susan Taylor 1975-8-31 Taylor 879 Butte Riparian Woodland, on Ernies Island in Butte Creek, ca. 50 ft S of Humboldt Rd, ca. 0.5 mi E of Butte Meadows. 1341 Comment
  CHSC58909  Stellaria borealis subsp. sitchana Lowell Ahart 1992-8-2 6902 Butte On the west side of Concow Meadow, about 3 (air) miles north-east of Concow Reservoir. 1097 Comment
  UC600628  Stellaria calycantha E. B. Copeland Jul 1930 Butte Jonesville 1500 Comment
  CHSC46556  Stellaria longipes var. longipes Vernon H. Oswald 1989-7-15 3858 Butte Meadow at Butte Creek House, ca. 3.3 mi (air) se of Jonesville. Along a drainage on the sw corner of the meadow. 1767 Comment
  CHSC98954  Stellaria media Lowell Ahart 2008-5-12 14752 Butte Below the high water line of Lake Oroville, on the east side of Sucker Creek, about 100 yards north of where Sucker Creek enters the South Fork of the Feather River, about 1/4 mile west of the Ponderosa Dam. 258 Comment
  JEPS113137  Stellaria media Lowell Ahart 2007-3-12 13590 Butte At the information sign, north side of Rutherford Road, 50 yards west of Pennington Road, Gray Lodge Wildlife Area (Gray Lodge Waterfowl Management Area), about 6 miles (air) southwest of Gridley 21 Comment
  CHSC39044  Stellaria obtusa R. A. Schlising 1983-8-27 4452 Butte N part of county in Coon Hollow, N of Philbrook Reservoir. In streambed. Comment
  JEPS109818  Stellaria obtusa Dean W. Taylor 2004-7-21 19201 Butte Coon Hollow, upper reaches thereof ca. 0.3 miles above the creek crossing of Forest Road 26N74 (High Lakes Road), watershed West Branch Feather River 1706 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
  JEPS87514  Stephanomeria lactucina Lowell Ahart 1993-7-22 7071 Butte w side of dirt road about 1/4 mi nw Camp 18 (about 5 air mi ne of Feather Falls) 1219 Comment
  CHSC61299  Stephanomeria paniculata Lowell Ahart 1993-8-8 7153 Butte Near Jackass Flat, Mooreville Ridge, about 1 (air) mile north-west of the Lost Creek Reservoir Dam. 1158 Comment
  CHSC51044  Stephanomeria virgata subsp. pleurocarpa Vernon Oswald 1983-7-15 869 Butte Upper Bidwell Park, Chico, beside Upper Park Rd. at the e entrance to Brown's Hole. Road cut. 231 Comment
  SEINET10508392  Stipa lemmonii Lowell Ahart 1983-6-15 Ahart 4054 Butte Peter Ahart Ranch, ca. 2.5 mi ne of Honcut. Foothill Woodland; 50 m. Along the edges of North Honcut Creek. 50 Comment
  CHSC33225  Streptanthus longisiliquus R. E. Preston 1981-6-11 83 Butte On Carpenter Ridge, ca. 3.2 km sw of Butte Meadows. 1340 Comment
  JEPS116637  Streptanthus longisiliquus Matt Simenc 2009-7-24 Butte 1.6 air mi north of Jarbo Gap clearing under powerlines about 1/3 of the way down steepest (0.3 mi northwest of Rim Road/Ponderosa Way; 1.6 road mi north of Jarbo Gap/Hwy 70. Steep west-facing slope, in 50 ft wide forest); Northern High Sierra Nevada 853 Comment
  CHSC62721  Streptanthus polygaloides L. P. Janeway 1993-5-2 4334 Butte Ridge south of Serpentine Point and above Hwy 70. 518 Comment
  CHSC95054  Streptanthus polygaloides L. P. Janeway 2006-5-28 8647 Butte Northern High Sierra Nevada. Northwest side of Rim Road (Ponderosa Way) at southern end of Rocky Ridge and southern end of its serpentine openings. Southeast-facing slope near ridge top. 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
  CAS-BOT-BC87443  Streptanthus polygaloides Walter S. Lennon 1974-1-1 s.n. Butte Sierra Nevada. Near Pulga. Comment
  CHSC36698  Streptanthus tortuosus R. E. Preston 1982-6-18 305 Butte Ca. 1 mi n of the site of Merrimac, ca. 23 mi ne of Oroville. 1371 Comment
  CHSC4639  Streptanthus tortuosus var. suffrutescens R. Carter 1966-4-21 353 Butte Found ca. 5 mi. NE of Oroville on top Table Mt.; growing 4 yds. off E side Old Cherokee Rd., 5.4 mi. from Chico Rd. Comment
  CHSC93178  Streptanthus tortuosus var. tortuosus L. P. Janeway 1994-6-17 4666 Butte Northern High Sierra Nevada. Northwest side of canyon of North Fork Feather River, +-overlooking Cresta; along Pulga Road (Camp Creek Road) 6.1 mi northeast of Pulga Bridge (Hwy 70). Southeast-facing road cutbank. 670 Comment
  CAS-BOT-BC48065  Styrax redivivus Lowell Ahart 1980-6-8 2369 Butte Along the road to Goldbank Mine. 600 Comment
  UCD99541  Suaeda calceoliformis William Anderson 1959-10-7 s.n. Butte Edge of dike along West Liberty Road, Gray Lodge Wildlife Management Area, Gridley. 365 Comment
  CAS-BOT-BC99040  Symphyotrichum cusickii E. B. Copeland 1930-8-26 487 Butte Jonesville 1500 Comment
  CAS-BOT-BC99042  Symphyotrichum cusickii A. A. Heller 1914-8-7 11655 Butte Butte Meadows 1219 Comment
  UC600723  Symphyotrichum spathulatum H. F. Copeland 1932-8-19 Butte Jonesville, at the Lily Pond 1700 Comment
  UCSB63840  Symphyotrichum spathulatum Ahart, Lowell 1997-8-1 Butte Little Kinshew Creek, in Snow Meadow, about 1/4 mile east of table Mountain, about 8 miles (air) northeast of Stirling City; T25N, R5E, Section 33 1524 Comment
  CHSC113496  Symphyotrichum spathulatum var. spathulatum Lowell Ahart 2014-7-16 19690 Butte Northeast of a large wet meadow (some bog), about 60 yards south of Philbrook Road, about 1 mile (air) west of Philbrook Reservoir. 1638 Comment
  JEPS107333  Tamarix parviflora Lowell Ahart 2005-4-2 11697 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 Comment
  CHSC28552  Taraxacum officinale M. S. Taylor 1978-7-19 1759 Butte On e side of Upper Scot's John Rd, ca. 3 mi n of its jct with Scots John Rd, ca. 7 mi ne of Jonesville. 1889 Comment
  CHSC4203  Taraxacum officinale J. Wheeler 1967-5-20 28 Butte In lawn at 248 Serviss St. Durham. Comment
  CHSC34796  Tauschia kelloggii M. S. Taylor 1981-5-15 3754 Butte End of spur rd 22N84A, ridge sw of Stony Creek, ca. 2.5 mi due e of Jarbo Gap on Hwy 70. 944 Comment
  CHSC46852  Thalictrum fendleri Kirsten Tarp 1982-7-21 216 Butte Philbrook Reservoir. 1706 Comment
  POM196105  Thalictrum occidentale E. B. Copeland 1929-7-22 361 Butte Jonesville. 1500 Comment
  CAS-BOT-BC88207  Thysanocarpus curvipes A. A. Heller 1919-3-29 13095 Butte Feather River near Yankee Hill. Comment
  CHSC35020  Thysanocarpus curvipes R. E. Preston 1982-3-25 199 Butte W side of Hwy 70 at jct with Yankee Hill Rd, ca. 13 mi n of Oroville. 518 Comment
  SJSU15298  Thysanocarpus curvipes Lisa Morton 2002-3-30 12 Butte Upper Bidwell Park, along N, Rim Trail at top of butte. 80 Comment
  SEINET10448593  Thysanocarpus curvipes Mary Susan Taylor 1974-3-3 Taylor 65 Butte Burton's Mesa, ca. 13 mi E of Chico on the Skyway to Paradise. Associates: Nemophila heterophylla, Brodiaea pul chella, Arenaria californica. 335 Comment
  CHSC2402  Thysanocarpus curvipes var. curvipes R. Carter 1965-3-13 158 Butte Found on North Table Mt. ca. 25 yds. SE of point where Old Cherokee Rd. comes over S rim of table. 304 Comment
  JEPS119789  Thysanocarpus curvipes var. curvipes Lowell Ahart, Linnea Hanson, Susan Bazell, Josephine Guardino 2012-5-10 18014 Butte South of Vallombrosa Avenue, about 1/4 mile west of Peterson Drive, Lower Bidwell Park, Chico. Comment
  SEINET10448630  Thysanocarpus elegans Mary Susan Taylor 1980-3-1 Taylor 2337 Butte T21N R2E se sec 11. Among rocky outcrops on n-facing bluffs overlooking Nance Canyon, ca. 1/4 mi N of Neal Road, ca. 3 mi E of its jct with Hwy 99, ca. 7 mi S of Chico. 122 Comment
  CHSC103659  Thysanocarpus radians Lowell Ahart 2010-3-31 16572 Butte Open pasture field, about 1 1/2 miles north and 2 1/2 miles east of Honcut, about 12 miles southeast of Oroville. 66 Comment
  UC725966  Thysanocarpus radians A. A. Heller 1929-3-13 14809 Butte Richardson Springs road Comment
  UCD116037  Thysanocarpus radians L. Ahart 1975-3-26 719 Butte Peter Ahart Ranch, Honcut. 45 Comment
  CHSC24621  Tilia americana M. S. Taylor 1975-5-6 553 Butte On s side of Little Chico Creek, near Holt Hall, California State University, Chico.